The invention relates to a method for detecting brake lining fading, and increasing the brake application force F in order to compensate for such fading.
The invention relates to a braking system (2) for a motorised road vehicle (1). The braking system (2) comprises a first operating mode in which the braking system (2) does not apply a deceleration torque when a driver lifts their foot off an accelerator pedal (3). The braking system (2) comprises a second operating mode in which an active deceleration member (6, 7) applies a torque for decelerating the vehicle (1) when a driver lifts their foot off an accelerator pedal (3). The braking system (2) automatically activates a safe operating mode when a failure of the braking system (2) is detected, in which the active deceleration member (6, 7) applies a torque for decelerating the vehicle (1) when a driver lifts their foot off an accelerator pedal (3).
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The invention relates to a drum brake (1) which comprises a force sensor at a fixed point (13) where the friction segments (3, 4) are mounted on the structure of the brake, and this sensor is designed to make it possible to measure the reaction force of one of the segments (3) on the fixed point (13) while braking is applied. The value of this reaction is easily correlated to the braking torque. An ECU measuring the reaction can adjust this braking torque in real time via the actuator of the brake (1) in order to provide sufficient braking without locking the brake.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 51/20 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
F16D 66/00 - Arrangements for monitoring working conditions of brakes, e.g. wear or temperature
Disclosed is a braking system (10) for a motor vehicle, comprising a power supply line (110a, 110b) configured to connect a power supply battery (14a, 14b) to an inverter (184a, 184b) of an electric braking motor (182), the braking system (10) comprising at least one DC-DC voltage boost converter (30a, 30b) disposed on the power supply line (110a, 110b) between the battery (14a, 14b) and the inverter (184a, 184b).
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
5.
METHOD FOR CONTROLLING THE WEAR ON A BRAKE PAD OF A DISK BRAKING DEVICE OF A MOTOR VEHICLE
The invention relates to a method for controlling the wear on a braking device (F) acting on at least one wheel of a motor vehicle, the braking device (F) comprising: a caliper (E) comprising two brake pads, wherein one (P1) is referred to as fixed relative to the caliper (E), and the other (P2) is referred to as movable relative to the caliper (E), wherein the brake pad referred to as the movable brake pad is drivable so as to bear against the brake disk (D), which rotates as one with the wheel and is positioned between the brake pads (P1, P2), and wherein the braking device comprises an electrically controlled parking brake comprising an electric motor (M) for actuating a screw/nut mechanism (2) intended to exert a bearing force against a brake piston (1) bearing against the brake pad referred to as the movable brake pad (P2), and thereby to drive the brake pad referred to as the movable brake pad (P2) into a clamping position against the disk (D) and the brake pad referred to as the fixed brake pad (P1), in the parking braking position. The method comprises: a phase 1 comprising driving the nut (21) of the screw/nut mechanism (2) from an initial position to a reference position; a phase 2 comprising driving the nut (21) of the screw/nut mechanism (2) from the reference position (PREF) to a bearing position, wherein the brake pad referred to as the movable brake pad (P2) bears against the disk (D), and wherein the bearing position (PA) precedes the parking braking position (PS), in which the parking brake is engaged, wherein the method comprises determining the distance (d) travelled by the nut (21) of the screw/nut mechanism (2) between the reference position and the bearing position, comparing the determined distance with a predetermined reference distance, and calculating a difference between the two distances in order to determine the wear on the braking device associated with the loss of thickness of the brake pad referred to as the movable brake pad (P2), of the disk (D), and/or of the brake pad referred to as the fixed brake pad (P1).
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
The invention relates to a disc brake comprising a caliper that has a fixed brake pad (P1) and a movable brake pad (P2) opposite one another, and an actuation mechanism for actuating the movable brake pad (P2) comprising a bolt/nut system and means for transmitting rotational movement from a motor shaft (4) to the bolt/nut system in order to actuate the movable brake pad (P2), wherein the actuation mechanism is mounted in a through-cavity (L) provided in the caliper, and an electric motor (M) and an electronic control unit (ECU) for controlling the actuation of the actuation mechanism. The invention is characterised in that the electric motor is contained in an open housing fitted onto the caliper in order to connect the motor shaft (4) of the electric motor (M) to the transmission means, wherein a covering and securing cap (30) is mounted on the housing and attached to the caliper, and wherein the covering and securing cap (30) comprises means for accommodating the electronic control unit (ECU).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/60 - Slack adjusters mechanical self-acting in one direction for adjusting excessive play for angular adjustment of two concentric parts of the brake control system
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
7.
DYNAMIC BRAKING METHOD CONSISTING IN BRAKING A REAR WHEEL OF THE VEHICLE IN THE EVENT OF A FAILURE OF THE HYDRAULIC BRAKING SYSTEM
The invention relates to a dynamic braking method that can be used in a motor vehicle equipped with a brake pedal, a hydraulic braking system intended to operate during the driving of the vehicle and a parking brake having an electromechanical actuating unit, the method consisting in braking a rear wheel of the vehicle in the event of a failure of the hydraulic braking system. The method consists in first placing the electromechanical unit in a dynamic state by taking up the functional clearances of the parking brake, predicting a braking need expressed by the driver on the brake pedal, and then applying a clamping force to the parking brake which is in its dynamic state when a braking need is expressed by the driver.
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
8.
DRUM BRAKE SHOE COMPRISING AN AREA OR LINEAR DRIVE INTERFACE
A brake shoe (4A) comprising a drive interface (30A) configured to cooperate with a connecting element, of a type involving a rolling-contact bearing, in order to move the shoe (4A) to a braking position and/or to a rest position. A braking assembly, drum brake and braking method therefor.
F16D 51/20 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
F16D 51/24 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
F16D 65/09 - Pivots or supporting members therefor
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
The invention relates to a method for determining a value for the hydraulic pressure to be provided in a motor vehicle braking device (6), comprising the following steps, while applying the brakes: - determining a target value for the total brake-application force to be exerted on the piston, - determining a value for the main force that the screw/nut system is capable of exerting by itself on the piston, - determining a value for the shortfall in force that is to be exerted on the piston in addition to the main force, - determining a value for future loss of brake-application force corresponding to the reduction in the force exerted by the screw/nut system when, after the hydraulic system (8) has exerted an additional brake-application force on the piston, this hydraulic system (8) no longer exerts this additional brake-application force on the piston; - on the basis of the value for the shortfall in force, of the value for the future loss of brake-application force, and of a dimension of the piston, determining a target value for the hydraulic pressure to be provided by the hydraulic system.
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
The invention relates to a disc brake (F) comprising a calliper (E) that has, opposite one another, a stationary brake pad (P1) and a brake pad (P2) that can move relative to the calliper (E), as well as a mechanism for actuating the movable brake pad (P2), which mechanism comprises a screw/nut system and means for transmitting a rotational motion from a drive pinion (5) to the screw/nut system in order to actuate the movable brake pad (P2). The invention is characterised in that the screw/nut system is mounted in a recess (L) made in the calliper (E), the screw (1) of the screw-nut mechanism being mounted translatably locked in the recess (L) and capable of being rotated by the transmission means, whereas the nut (2), which is mounted rotatably locked in the recess (L), can be translated along the screw (1) during the rotation thereof, the translation of the nut (2) in a first direction making it possible for the movable brake pad (P2) to translate towards the stationary brake pad (P1) and the translation of the nut (2) in the opposite direction making it possible for the movable brake pad (P2) to move away from the stationary brake pad (P1).
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
A method for controlling a vehicle parking brake configured to apply a friction means firmly against a braking member, comprising the following steps: - detecting (22) a request for application of the brake, - depending on the parking conditions of the vehicle, determining a target value for the brake-application force for keeping said vehicle immobile, - actuating the brake so as to provide a brake-application force corresponding to the target value, characterized in that the step of determining a target value for the brake-application force value comprises the following steps: - determining a first value for the brake-application force for keeping said vehicle immobile for an unlimited duration, even after the brake has been released, - verifying (23) the presence of a driver at the driving station of the vehicle, - in the event of the driver being present at their driving station, using (24), as target value for the brake-application force, a second value strictly lower than the first value for the brake-application force, - if not, using (25) the first value for the brake-application force as target value for the brake-application force.
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/24 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The invention relates to a method for controlling a brake for a motor vehicle using an estimated clamping force exerted by the brake, the value of the estimated clamping force being obtained from an electric current consumed by the brake, the method comprising: a) monitoring the voltage at the terminals of the brake, b) detecting a voltage variation likely to falsify the estimated clamping force, and c) calculating a corrected estimated clamping force by at least partially eliminating the voltage variation.
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The clamping strategy of an electromechanical brake depends on an already existing hydraulic pressure, in order to adjust the mechanical component of the clamping force and avoid an excessive clamping of the brake. The hydraulic component (FHyd) of the clamping force is estimated according to a pressure measurement, subtracted from a target force (FTar) to obtain the mechanical component to be applied (FTarNew), and the electric motor for controlling clamping of the brake is stopped at a threshold value (I2) of the current that is supplied thereto, according to the value of this mechanical component to be applied.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
H02P 3/04 - Means for stopping or slowing by a separate brake, e.g. friction brake or eddy-current brake
14.
PLANET CARRIER FOR DIFFERENTIAL EPICYCLIC REDUCTION GEAR OF A BRAKE ACTUATOR AND EPICYCLIC REDUCTION GEAR COMPRISING SUCH A PLANET CARRIER
The invention relates to a planet carrier (3, 3') for a differential epicyclic reduction gear of a brake actuator. It comprises a frame arranged and configured to carry planet gears (30) which are distributed angularly about the axis (A) of the planet carrier, the frame being a cylindrical sleeve (32) comprising a first and a second edge (33, 34). The sleeve comprises at least one opening (35) through which a planet gear (30) protrudes radially. The first edge and second edge comprise a first and a second radial flange (36, 37), respectively, which extends towards the inside of the cylindrical sleeve, each comprising a notch (38) having a circular cross-section, extending from the cylindrical sleeve on either side of one side of the at least one opening (35) in a longitudinal direction (D) parallel to the axis (A) of the planet carrier, the notches supporting a shaft (31) having a circular cross-section, ensuring that the rotation of the planet gear is guided.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16H 57/08 - General details of gearing of gearings with members having orbital motion
F16D 125/50 - Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
Braking device (5) for a caliper brake (1), comprising a piston (7), a shaft (23) for driving the piston (7) in translation along a longitudinal axis (A1) and a ring (21) for driving the shaft (23) in rotation about the longitudinal axis (A1), the ring (21) being guided in rotation about the longitudinal axis (A1) by the body (2) of the caliper. Floating caliper brake comprising at least one such device (5), and corresponding mounting method.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/48 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action with discs or pads having a small free angular travel relative to their support, which produces the self-tightening action
Braking device (5) for a caliper brake, comprising a push head (33) cooperating with a piston (7) via elastic members (31) in order to selectively transmit axial forces to the piston (7) during braking. Floating caliper brake comprising at least one such device (5) and corresponding mounting method.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/48 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action with discs or pads having a small free angular travel relative to their support, which produces the self-tightening action
Braking device (5) for a caliper brake (1), comprising a push head (33) cooperating with a piston (7) via elastic members (31) in order to selectively transmit axial forces to the piston (7) during braking. Floating caliper brake comprising at least one such device (5), and corresponding mounting method.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/48 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action with discs or pads having a small free angular travel relative to their support, which produces the self-tightening action
Braking device (5) for a caliper brake, comprising a ball screw drive mechanism provided with a nut (24) which comprises a central collar (404) for transmitting axial forces. Floating caliper brake equipped with such a device (5).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/48 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action with discs or pads having a small free angular travel relative to their support, which produces the self-tightening action
F16D 65/095 - Pivots or supporting members therefor
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
Braking system for a motor vehicle, comprising: at least two electrically actuated parking brakes (FP1, FP2), each intended to be positioned at a wheel, control means for controlling the brakes of the parking brakes, at least two control units (ECU1, ECU2) for the parking brakes, each control unit (ECU1, ECU2) being configured to control at least one parking brake upon reception of an instruction by the control means and, in the event of the failure of one of the control units, to control the two parking brakes (FP1, FP2).
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 7/08 - Brake-action initiating means for personal initiation hand-actuated
20.
HOUSING FOR AN ELECTROMECHANICAL DISC BRAKE ACTUATOR COMPRISING A DAMPING ELEMENT
A housing for an electromechanical actuator, the housing comprising an open face on which a cover is mounted for closing an opening of the open face, the housing including damping elements associated with the cover and positioned between the cover and the housing. A disc brake caliper and a disc brake includes such a housing for an electromechanical actuator.
F16H 57/028 - GearboxesMounting gearing therein characterised by means for reducing vibration or noise
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The system (72) for detecting pad and/or disc (15) wear of an electromechanical disc brake (10) for a motor vehicle (1) is designed to compare a first contact position (P2) with a first determined position (P1, PB) of the piston. The pad comes into contact with the disc (15) by being pushed by the piston (17) when the piston (17) is in the first contact position (P2).
The releases of an electromechanical parking brake are controlled by measuring the change in the intensity (I) of the electrical current provided to the control motor, or a function derived from this intensity, and by extending the release of the brake only for a determined duration (Δt) after stabilization of this intensity, in order not to unnecessarily increase the idle travel of the brake actuator nor to extend the duration of the control. The determined duration (Δt) also depends on the temperature and on the hydraulic pressure in the brake.
H02P 3/04 - Means for stopping or slowing by a separate brake, e.g. friction brake or eddy-current brake
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 66/00 - Arrangements for monitoring working conditions of brakes, e.g. wear or temperature
The invention relates to a control system (14) for controlling a braking device (16) which is capable of implementing a parking brake function, the control system (14) being configured to send to the braking device (16) a parking brake command which consists in applying a force of a first predefined amplitude making it possible to keep the vehicle (10) stationary regardless of the current conditions of the vehicle (10), characterised in that the control system (14) is configured to send to the braking device (16) a parking brake command which consists in applying a clamping force of a second amplitude that is less than the first amplitude and large enough to keep the vehicle (10) stationary.
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The invention relates to a method for dynamically braking a vehicle rear wheel provided with an electric parking brake by implementing an RWU braking mode, the RWU braking mode being ensured by controlling the parking brake in accordance with the following rules, while measuring the slip (13) of the wheel: - if the slip (13) is less than a first predetermined threshold (3), gradually applying the brake until the slip (13) becomes greater than this first threshold (3); - if the slip (13) is greater than a second predetermined threshold (4), which is greater than the first threshold (3), gradually releasing the brake until the slip (13) becomes less than this second threshold (4); - if the slip (13) is greater than the first threshold (3) and less than the second threshold (4), maintaining the braking at its current level, the method being characterised in that it consists in executing at least the following three steps during each dynamic braking request: - test: applying test braking at a predetermined test braking level, then waiting for an observation time, and then measuring the slip (13); - selection: if the measured slip (13) is greater than a predetermined trigger value, selecting an intermittent braking mode, and, otherwise, selecting the RWU braking mode; and - braking: actuating the parking brake in the mode selected in the selection step.
B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The invention relates to a method and system for emergency braking of a vehicle rear wheel (1) equipped with an electric parking brake (7), by implementing either an anti-lock braking mode or an incremental braking mode. When the speeds of two front wheels (2, 3) are not known but only one is known, the anti-lock braking mode is applied with this known speed, corrected by a reducing operation, as a reference speed, and when the speed of neither of the front wheels is known, the incremental braking mode is applied. The invention further relates to a vehicle provided with such a system.
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
26.
METHOD FOR ADJUSTING THE CLAMPING FORCE EXERTED BY AN ELECTROMECHANICAL BRAKE
A method for adjusting the clamping force exerted by an electromechanical brake of a motor vehicle, the brake including an electric motor provided with a rotating shaft which is intended to drive a mechanical brake-application mechanism, the electric motor being controlled by a PWM-type voltage controller, in which the rotational speed of the motor is estimated from an estimate of the motor resistance and an estimate of the motor constant, and then the clamping force is determined from the estimate of the rotational speed of the motor, wherein the estimate of the motor resistance is updated during an inactive phase with no voltage control.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
27.
DISC BRAKE INCORPORATING AN ELECTROMECHANICAL PARKING BRAKE
Disc brake comprising a carrier, at least a first brake pad mounted in a sliding manner in the carrier, the first brake pad comprising a pad support and a friction material, and a caliper comprising two hydraulically actuatable pistons. The disc brake comprises a third piston which can be actuated at least by an actuator configured to move the third piston axially, the third piston being arranged between the two pistons, and an interface device arranged between the third piston and the pad support, the interface device comprising a plate comprising two through-openings, each aligned with a hydraulically actuatable piston and traversed by the pistons, and the head of the other piston is intended to come into contact with the plate between the two openings
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
The invention relates to an ornamental plate (5) for a calliper (1) of a disc brake of a motor vehicle, the ornamental plate (5) comprising a decorated outer face (13) and an inner face, configured to be attached against the calliper (1), the inner face including a means for attachment to the calliper (1), the attachment means comprising: - a protrusion integral with the inner face of the ornamental plate (5), and - a fastening portion for fastening to the calliper, made of a material capable of softening when it is heated, and thus being shaped, and being secured to the protrusion by moulding, the fastening portion being configured to be inserted into an opening of the calliper (1) in order to attach the plate (5) to the calliper (1).
The invention relates to a method for electrically controlling a parking brake for a motor vehicle, the brake comprising at least one friction means connected to an electromechanical actuator capable of moving the friction means towards a braking member, wherein the following steps are carried out: - defining a clamping force for immobilising the vehicle; - estimating a temperature variation of the braking member from a convective heat transfer model, ignoring conductive and radiative heat transfer phenomena; - defining, from the estimation of the temperature variation, a correction of a clamping to be performed in order to preserve the defined clamping force; and - applying the clamping force with correction of the clamping via the actuator.
The method for controlling a disc (7) brake (2) for a vehicle is applied to a disc brake comprising brake pads (6) each carrying a lining (10) and an electromechanical actuator (9) intended to move the brake pads in such a way that the respective linings thereof clamp the disc in order to effect braking. According to this method, at the end of a braking operation, a movement of the brake pads is controlled depending on a state of thermal expansion of the disc and of the respective linings of the brake pads in such a way that, after the movement, a stroke length (d1, d2) between the lining of each brake pad and the disc remains greater than 0 mm and less than a predetermined stroke length (d1, d2).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 65/62 - Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
F16D 66/00 - Arrangements for monitoring working conditions of brakes, e.g. wear or temperature
31.
COVER FOR A GEAR MOTOR UNIT FOR AN ELECTRIC DISC BRAKE ACTUATOR, AND GEAR MOTOR UNIT COMPRISING SUCH A COVER
A cover for a gear motor unit, including a housing enclosing an electric motor and a gear mechanism which includes pinions that mesh with the inner surface of a rotationally fixed ring gear having a free edge. The cover also includes an axial projection, in particular, an internal skirt, capable of being positioned so as to at least partially bear against the free edge, the projection having, on a free end opposite the free edge of the ring, at least one elastically deformable element capable of at least partially bearing against the free edge of the ring so as to hold said crown in the housing in an axial direction of the ring.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a vehicle drum brake (1) comprising a plate (2) to which a wheel cylinder (6) and a support member (7) are attached, a first and a second shoe (3, 4) respectively comprising a web (12A, 12B) at the outer edge of which a table (13) provided with a brake lining (14) is attached, an actuator provided with a parking brake lever (21) carried by the web (12A) of one of the shoes, the drum brake comprising means for reducing vibrations attached to at least one of the webs of the shoes (3, 4). The invention also relates to a method for manufacturing a drum brake.
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
F16D 51/24 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
F16D 125/62 - Fixing arrangements therefor, e.g. cable end attachments
33.
BRAKING SYSTEM COMPRISING A PARKING BRAKE DEVICE WITH INCREASED OPERATIONAL RELIABILITY
The invention relates to a braking system comprising a parking brake device for a motor vehicle, which braking system comprises at least a first electrically actuated parking brake (FP1) intended to be positioned at a first wheel, a second electrically actuated parking brake (FP2) intended to be positioned at a second wheel, a control unit (UC) configured to generate an instruction for the first and second parking brakes (FP1, FP2) to apply a given parking braking force, and means (D1, D2) for determining the operating state of each of the first and second electric parking brakes (FP1, FP2), the control unit (UC) also being configured, during a malfunction of the first parking brake, to generate an instruction for the second parking brake (FP2) to apply at least the given parking braking force to ensure that the motor vehicle is immobilised.
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
34.
IMPROVED BALL SCREW DEVICE, BRAKING SYSTEM COMPRISING THIS BALL SCREW DEVICE, AND VEHICLE COMPRISING THIS BRAKING SYSTEM
The invention relates to a ball screw device, comprising: a screw (11) which cooperates with a nut (12) via balls, the balls being guided along a helical path by complementary threads (15, 16) which are provided in the screw (11) and the nut (12); a channel (20) which defines a recirculation path of the balls, this recirculation channel (20) being provided at least partly in the nut (12) and comprising one end (20R) for recovering the balls at the end of the helical path and one end (20I) for inserting the balls at the start of the helical path. The recirculation channel (20) comprises a radially inner surface (24) for guiding the balls which move along the recirculation path in accordance with the movement of a generating curve along this same recirculation path.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
35.
MANUFACTURE OF A GEARED MOTOR COMPRISING A CONTROL MODULE OF THE POWER MODULE COMPATIBLE WITH DIFFERENT POWER MODULES
The invention relates to a method (200) for manufacturing a geared motor (1) for an electromechanical brake of a motorised vehicle wheel. The manufacturing method (200) comprises a step of selecting a first power module, which is suitable for electrically powering a first electric motor of the geared motor, from among a set of power modules for a geared motor that have different structures. The manufacturing method (200) comprises a step of programming a computer of the control module (92) of the power module to control the first power module (91), the control module (92) of the power module comprising a programmable computer which is programmable by being able to control each of the power modules (91) of the set of power modules.
H02P 25/03 - Synchronous motors with brushless excitation
H05K 3/00 - Apparatus or processes for manufacturing printed circuits
B60T 15/00 - Construction, arrangement, or operation of valves incorporated in power brake systems and not covered by groups or
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The invention relates to a geared motor for an electromechanical brake of a vehicle wheel. The adapter comprises an electric motor (2) and a power control and switching member (9). The power control and switching member (9) comprises a power module (91) which has power inverter switches arranged in switching cells. The switching cells are configured to be connected to phases of the electric motor (2). The power module (91) has at least as many switching cells as the number of phases of the electric motor (2) and comprises at least four switching cells.
A braking system for a motor vehicle including a main braking circuit, an auxiliary electric braking circuit configured to perform parking braking, a first electronic control device which controls i) the main braking circuit to actuate a first braking member and a second braking member, and ii) in the auxiliary electric braking circuit, a first electric actuator of the first braking member, and a second electronic control device which controls, in the auxiliary electric braking circuit, a second electric actuator of the second braking member. A motor vehicle including such a braking system and to methods for controlling such a braking system.
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 8/92 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
38.
CLAMPING DEVICE FOR A BRAKING SYSTEM WITH INTEGRATED LOCKING MEANS
The invention relates to a clamping device (1) for a braking system, which clamping device is intended to cause friction elements to be displaced relative to one another. The clamping device comprises a first actuator (2) for supplying a clamping force to the friction elements, and further comprises a rotor (3) and means (4, 4', 5, 6, 7, 8) for locking the rotor (3) against rotation. The invention further relates to a braking system comprising this device and a braking method for such a device.
B60T 1/00 - Arrangements of braking elements, i.e. of those parts where braking effect occurs
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
F16D 63/00 - Brakes not otherwise provided forBrakes combining more than one of the types of groups
39.
BRAKING SYSTEM INCLUDING AT LEAST ONE PARKING BRAKE
A motor vehicle braking system including at least one electrically actuated parking brake (FP) to be positioned at a wheel, a control unit (UC) configured for generating a command for the parking brake (FP) to apply parking braking or to interrupt the application of parking braking at a first intensity following a first request, wherein the control unit (UC) is also configured for generating a command for the parking brake (FP) to apply parking braking at a second intensity in response to a second request issued after the first request.
B60T 8/24 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
B60T 7/02 - Brake-action initiating means for personal initiation
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
40.
METHOD FOR CONTROLLING THE TIGHTENING TORQUE OF AN IMPROVED ELECTROMECHANICAL BRAKE
A method for controlling the tightening torque of an electromechanical brake for a motor vehicle, the brake including an electric motor provided with a rotary shaft intended to drive mechanical brake-clamping mechanisms. The method includes steps of acquiring data from a wheel speed sensor that takes a characteristic measurement of the speed of at least one of the wheels of the vehicle, determining, according to the data from the wheel speed sensor, a deceleration indicator characteristic of the acceleration of the vehicle, regulating the tightening torque according to the deceleration indicator.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
41.
VIBRATION DAMPER FOR A GEARED MOTOR UNIT FOR AN ELECTRICAL ACTUATOR OF A DISC BRAKE
A noise-damping device for a geared motor unit including a housing containing an electric motor having an axis, and a reduction mechanism is disclosed. The device includes two coaxial rings, connected radially to one another by a connection ring, including a first ring positioned inside a second ring, the damping device being able to be positioned at an end part of the electric motor, the first and second rings being arranged against the end part of the electric motor so as to damp the movements of the electric motor in the housing in radial and axial directions.
H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
F16H 57/028 - GearboxesMounting gearing therein characterised by means for reducing vibration or noise
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16H 57/031 - GearboxesMounting gearing therein characterised by covers or lids for gearboxes
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
42.
BRAKING SYSTEM WITH IMPROVED ROBUSTNESS AND MECHANICAL STRENGTH
The invention relates to a clamping device for a braking system intended to exert a relative displacement between friction elements with the aid of an electric actuator having a mechanism (15), for converting the rotational movement of an output shaft of the electric actuator into a translational movement, of the ball-screw type having a nut coupled to a screw (17) by balls, and a mechanism (19) for radial and/or tangential decoupling of a stop (11), intended to receive a friction element, with respect to a free end (17a) of the screw (17) of the conversion mechanism (15) in order to improve the mechanical strength of the latter (15).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
43.
METHOD FOR CONTROLLING A POWER-DRIVEN PARKING BRAKE IN AN EMERGENCY
The invention relates to a method for controlling a braking device of a vehicle, in particular a motor vehicle, for providing an emergency brake function, the braking device comprising at least one electric actuator for moving a brake piston, a brake lining, a friction track and an electronic control circuit for the electric actuator, the method comprising the following steps: controlling a current (P) supplied to the electric actuator to cause the brake piston to exert a pressing force on the friction track, measuring the deceleration of the vehicle using a deceleration detection device, controlling the current (P) supplied to the electric actuator of the brake piston, in particular by pulse width modulation (PWM), so as to bring about a deceleration greater than a minimum deceleration and lower than a deceleration that may cause the wheels of the vehicle to lock.
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
44.
ELECTRIC ACTUATOR FOR MOTOR VEHICLE COMPRISING A SAFETY VALVE
The invention relates to an electric actuator (4) for a brake (2) of a motor vehicle (1), comprising: - a housing (5), and - filtering means (8) which are supported by the housing (5) and allow circulation of water vapour between the inside (9) and the outside of the housing (5) and prevent circulation of liquid water between the inside (9) and the outside of the housing (5). Part of the filtering means (8) is supported by a safety valve (10) which is mounted so as to be movable on the housing (5) between a closed rest position in which it is inactive and an open safety position in which it is active. The safety valve (10) is configured to move into the open safety position when the pressure inside (9) the housing (5) reaches, or exceeds, a predetermined pressure threshold.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The drum (5) brake (2) for a motor vehicle (1) comprises a drum housing two jaws (6) carrying friction means (7). Each jaw forms a lever having a support portion (11), a resistance portion (12) and a power portion (13) for supporting, increasing the resistance of and powering the lever. The jaws are articulated around a respective pivot (10) and are mutually movable about their pivots between a rest configuration, wherein they are close together, and a configuration of friction with the drum, wherein they are spaced apart and the friction means are pressed against the drum. At least one portion of at least one of the jaws is intended to co-operate with at least one complementary member of the drum brake. The complementary member is elastically returned to a rest position in the direction (C) of contact with the corresponding portion of the jaw.
The invention relates to a rotary drive reduction gear or geared motor within an electric brake actuator. It comprises one or more planetary gear sets (2) parallel or coaxial to the linear actuation direction (500), which are provided with at least one rotationally fixed ring gear (21). This reduction gear comprises a damping device (204) made at least partially of an elastomer material, which is arranged around the fixed ring gear and compressed radially and/or axially between the fixed ring gear and a brake housing (41). Typically, the reduction gear is a differential planetary gearset (2) driven by its sun gear with planet gears (22) meshing simultaneously with the fixed ring gear (21) and a movable ring gear (23). The latter drives the nut of a reversible screw-nut mechanism (3), which produces the linear force. The overall irreversibility is produced by the differential gearset. The invention also relates to a component determined for producing the damper of this reduction gear, to a motor unit including this damper, to a brake and to a method for assembling same.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
47.
ELECTRIC BRAKE ACTUATOR, BRAKE AND ASSEMBLY METHOD, IN PARTICULAR FOR AN ALL-ELECTRIC DISC BRAKE
The invention relates to an electric brake actuator. A motor (11) drives at its end the input sun gear (12) of a differential planetary reduction gearset, the planet gears (22) of which mesh with a fixed ring gear (21) and a movable ring gear (23). This reduction gearset thus provides irreversibility and is combined in series with a reversible screw-nut mechanism (31-32). Advantageously, the movable ring gear rotates the nut, which translates (F1) the screw fixed against rotation. The input gear advantageously has an axial housing (120) receiving the screw when it retracts. The motor has an outer rotor mounted in an outer rolling bearing (15), the screw housing (120) extending axially within the stator (111). A common centring support (16) carries the motor bearing and the fixed ring gear. The movable ring gear and the screw-nut assembly (3) are assembled on either side of a housing (410) passing through the caliper.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a drum brake comprising a disk-shaped plate having an inner face to which a wheel cylinder and a bearing element, which bearing element is referred to as a fixed point bearing element, are attached at diametrically opposite positions, a first and a second segment, the drum brake having a second actuator comprising a parking brake lever (21) for immobilising the vehicle, which lever (21) is carried by the core of a segment and has one end that is rotatably linked to a first end of the core and another free end (23) to which an end of a brake cable (5) is attached, which brake cable, when under tension, pulls the free end of the lever (21) causing the lever to rotate (21) in order to separate the segments, the brake (1) having means for blindly installing the brake cable (5), the means comprising a through-opening formed in the plate, means for guiding the brake cable (5) made up of a sheath such as a coil spring (26) extending between the opening in the plate and the free end of the lever (21), and means for supporting the guide means. The invention is characterised in that the support means are made up of a U-shaped support element (27), the coil spring (26) being carried in the space defined between the arms of the U.
F16C 1/14 - Construction of the end-piece of the flexible memberAttachment thereof to the flexible member
F16C 1/10 - Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden mechanisms"
F16D 65/08 - Bands, shoes or padsPivots or supporting members therefor for internally-engaging brakes
F16D 65/09 - Pivots or supporting members therefor
B60T 11/04 - Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
F16D 125/62 - Fixing arrangements therefor, e.g. cable end attachments
49.
CLAMPING DEVICE FOR A BRAKING SYSTEM COMPRISING A REDUCTION MECHANISM COMPRISING AN EPICYCLIC GEAR TRAIN
The invention relates to a clamping device (7) for a brake system, which device is intended to exert a relative movement between friction elements and includes a frame (10) supporting an electric actuator, which is intended to provide the clamping force, and a reduction mechanism (17), which couples an output shaft of the electric actuator to a mechanism (13) for converting the rotational movement of the output shaft into translational movement to allow relative movement between the friction elements. The reduction mechanism comprises an epicyclic gear train including: • - a planetary gear for receiving the rotational movement of the output shaft, and • - an assembly (19) forming a ring gear for delivering the output rotational movement to the conversion mechanism. The clamping device comprises means (25) for transforming the assembly forming a ring gear between a configuration for delivering the output rotational movement and a configuration for blocking the output rotational movement.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a clamping device for a braking system, which clamping device is intended to cause friction elements to be displaced relative to one another and comprises an actuator supplying a clamping force to a clamping abutment (11) to allow the friction elements to be displaced relative to one another in a rectilinear, axial direction (A). The device comprises a mechanism (19) for releasing the abutment via a shortened stroke, allowing the device to disengage if a clamping force is accidentally maintained. The mechanism comprises: - a disengagement washer (20) comprising recesses (21) and projections (22), - a carrier (25) supporting rollers (26). The carrier is configured to pivot about the axial direction between a position in which each roller bears against a top (23) of one of the projections and a position in which each roller is housed in one of the recesses.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The invention relates to a clamping device (6) for a braking system (2) intended to exert a relative movement between friction elements (4A, 4B) and comprising an assembly (7) bearing: - a clamping force application member (9) for applying a clamping force to at least one of the friction elements (4A, 4B), and - electromechanical means (11) for moving the clamping force application member (9). The clamping device (6) comprises vibration damping means (25, 26) arranged around at least one rotating member (15, 20) of the electromechanical means (11), between this rotating member (15, 20) and a fixed part (10, 16) of the assembly (7).
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
52.
DEVICE FOR ADJUSTING THE CLAMPING FORCE OF AN ELECTROMECHANICAL BRAKE
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 7/08 - Brake-action initiating means for personal initiation hand-actuated
The invention relates to a clamping device (7) for a braking system (1) comprising a calliper (10) supporting at least two hydraulic actuators (18a, 18b) each intended for providing a clamping force in order to force friction elements (2a, 2b) together, and at least one electrical actuator (12) which is intended for providing the clamping force and coupled to a mechanism (15) for converting the rotational movement of an output shaft (13) of the electrical actuator (12) into a translational movement in order to force the friction elements (2a, 2b) together. According to the invention, the clamping device (7) comprises a mechanism (19) for balancing the clamping forces of the hydraulic (18a, 18b) and electrical (12) actuators which adapts the orientation of at least one (2a) of the friction elements (2a, 2b) according to its wear, regardless of the type of actuation used.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/095 - Pivots or supporting members therefor
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a method for electrically controlling a parking brake for a motor vehicle, wherein a release of the parking brake is controlled (3) in two steps (D1, D2) separated by an interruption (I) of the release for a period of time linked to the fulfilment of a predetermined condition. This condition depends, according to one embodiment, on a hydraulic pressure (5) exerted by a hydraulic actuator of a service brake of the vehicle, and, according to another embodiment, on a predetermined time that has elapsed from the interruption.
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
55.
HELICAL CONNECTION MECHANISM FOR ELECTROMECHANICAL BRAKE CALIPER PISTON WITH SIMPLIFIED MOUNTING
A helical connection mechanism for an electromechanical brake piston is configured to be mounted in the piston, including a sleeve and a drive member cooperating by a helical connection of longitudinal axis (AX), and a locking structure for rotationally locking the sleeve relative to the piston about the longitudinal axis (AX) and for axially holding the mechanism. The locking structure includes a plate attached to the sleeve and extending orthogonally to the longitudinal axis (AX), at least three axial extensions cooperating with an axial wall of the piston and at least one radial shape cooperating with the axial wall of the piston.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
56.
DRUM BRAKE FOR APPLYING A FIRST FORCE AND A REACTION FORCE
The invention relates to a drum brake module (1) for a road vehicle. The brake module (1) comprises a brake actuator (4) configured to bias a first shoe (81) and a second shoe (84) separated from one another towards a drum (2) in order to brake a wheel of the vehicle. The brake actuator (4) is configured to apply a first pulling force (F1) on a first lever (42) which biases a first shoe (81) towards the drum. The brake actuator (4) is configured to apply a second pushing and reaction force (F2) with respect to the first force (F1) on a second shoe-biasing member (44) which biases the second shoe (84) towards the drum (2).
F16D 51/20 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
F16D 63/00 - Brakes not otherwise provided forBrakes combining more than one of the types of groups
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
The invention relates to a vehicle disc brake (1). The disc brake (1) comprising a pad spring (5) for the return of a brake pad (7), the mounting and the guiding of the pad lug (72). The pad spring (5) is configured to urge the pad (7) elastically towards a retracted position. The pad spring (5) is configured to be deformed plastically in order to urge the pad (7) towards a braking position when a wear play of the brake lining (71) is greater than a predetermined play. The pad spring (5) is configured to urge the pad lug (72) elastically in a housing for the pad lug (72). The pad spring (5) is configured to guide the pad lug (72) axially in the housing of the pad lug (72).
The invention relates to a covering element (5) configured to cover a caliper nose (22) of a floating-caliper disc brake (1) by at least partially hiding the caliper (2) and a carrier (3) of the floating-caliper disc brake (1). The covering element (5) comprises a fastening means for fastening the covering element (5) to the carrier (3) of the floating-caliper disc brake (1).
An electromechanical parking brake command is aborted with no predefined plan being completed if the driver initiates an opposite command (31) when the vehicle is stationary. The plan normally implemented for the second command (31) is itself shortened as a result. The brake is therefore quickly returned to its original state, and a command sent inadvertently is corrected quickly.
B60T 7/08 - Brake-action initiating means for personal initiation hand-actuated
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The releases of an electromechanical parking brake are controlled by measuring the change in the intensity (I) of the electrical current provided to the control motor, or a function derived from this intensity, and by extending the release of the brake only for a determined duration (Δt) after stabilization of this intensity, in order not to unnecessarily increase the idle travel of the brake actuator nor to extend the duration of the control. The determined duration (Δt) also depends on the temperature and on the hydraulic pressure in the brake.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
61.
METHOD FOR ADJUSTING THE CLAMPING FORCE EXERTED BY AN ELECTROMECHANICAL BRAKE
The invention relates to a method for adjusting the clamping force (F*) exerted by an electromechanical brake (B) of a motor vehicle, the brake (B) comprising an electric motor provided with a rotating shaft which is intended to drive mechanical brake-application means, the electric motor being controlled by means of a PWM-type voltage control, in which the rotational speed of the motor (ω) is estimated from an estimate of the resistance of the motor (R*) and an estimate of the motor constant (K*), and then the clamping force (F*) is determined from the estimate of the rotational speed of the motor (ω), characterised in that the estimate of the resistance of the motor (R*) is updated during an inactive phase with no voltage control ("idle phase").
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
H02P 29/40 - Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
62.
DISC BRAKE INCORPORATING AN ELECTROMECHANICAL PARKING BRAKE
Disc brake comprising a carrier (11), at least a first brake pad (P1) mounted in a sliding manner in the carrier (11), the first brake pad (P1) comprising a pad support and a friction material, and a caliper (12) comprising two hydraulically actuatable pistons (15, 16). The disc brake comprises a third piston (18) which can be actuated at least by an actuator (20) configured to move the third piston (18) axially, the third piston (18) being arranged between the two pistons (15, 16), and an interface device arranged between the third piston (18) and the pad support, the interface device comprising a plate (30) comprising two through-openings (32, 34), each aligned with a hydraulically actuatable piston (15, 16) and traversed by the pistons (15, 16), and the head of the other piston (18) is intended to come into contact with the plate between the two openings.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The invention relates to a cover (1) for a gear motor unit (2), comprising a housing (4) enclosing an electric motor and a gear mechanism (5) which comprises pinions that mesh with the inner surface (31) of a rotationally fixed ring gear (3) having a free edge (30). The cover (1) also comprises an axial projection (13), in particular an internal skirt, capable of being positioned so as to at least partially bear against the free edge (30), said projection (13) having, on a free end (14) opposite the free edge (30) of the ring (3), at least one elastically deformable element (15) capable of at least partially bearing against said free edge (30) of the ring (3) so as to hold said crown (3) in the housing (4) in an axial direction (A1) of the ring.
A brake (11) for a motor vehicle comprises a carrier intended to be fixed with respect to a brake disc (13) of the vehicle which extends in a transverse direction, a pair of pads (14i, 14e) situated on either side of the disc (13), a caliper (12) able to translationally move with respect to the carrier in a direction normal to the transverse direction, and actuating means (22) for pressing the pads (14i, 14e) against the disc, said actuating means acting, during a brake command, directly on an inner pad (14i) of the pair of pads in order to press same against the disc (13) and acting on the other, outer pad (14e) by a translational reaction of the caliper so as to press the outer pad against the disc (13). The caliper (12) comprises an outer arm (12e) on which a contact surface is formed that extends transversely and is in contact with the outer pad (14e) so as to press same against the disc (13) when the caliper is translationally moved. Said caliper (12) has a clearance which extends from the transverse end of the outer arm situated in the leading region of the outer pad (14e).
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
An epicyclic step-down gear for an electric parking brake, this step-down gear comprising a drive shaft, at least one step-down stage and a cylinder which forms a screw/nut system with an outer planet gear of this step-down gear. This step-down gear comprises at least one axial force transmission component which is positioned between a bearing ring of the drive shaft and the cylinder so as to transmit axial forces applied via either the bearing ring or the cylinder to either this bearing ring or this cylinder. Such an axial force transmission component prevents the drive shaft from buckling by defining an axial force transmission path which is radially eccentric.
F16H 57/08 - General details of gearing of gearings with members having orbital motion
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
The invention relates to a method for detecting a fault with an electric parking brake actuator (4), comprising the steps of: measuring an operational value of the actuator; for at least one operating parameter, calculating a tolerance band dependent on the measured operational value; for each operational parameter, comparing a functional value of said operational parameter against the tolerance band; and generating an alert if said functional value is outside of said tolerance band. The invention also relates to a device for detecting a fault in an electric parking brake actuator (4) and to a vehicle comprising such an actuator and such a detection device.
G01L 5/28 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The invention relates to a braking system (3) for a motor vehicle, comprising: - a main braking circuit (5), - an auxiliary electric braking circuit (7) configured to provide parking braking, - a first electronic control device (9) which controls i) the main braking circuit (5) to operate a first braking member (F1) and a second braking member (F2), and ii) in the auxiliary electric braking circuit (7), a first electric actuator (13) of the first braking member (F1), and - a second electronic control device (11) which controls, in the auxiliary electric braking circuit (7), a second electric actuator (15) of the second braking member (F2). The invention also relates to a motor vehicle comprising such a braking system (3) and to methods for controlling such a braking system (3).
B60T 7/02 - Brake-action initiating means for personal initiation
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 7/08 - Brake-action initiating means for personal initiation hand-actuated
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 8/44 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device
B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
B60T 8/50 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having means for controlling the rate at which pressure is reapplied to the brake
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 8/92 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action
B60T 11/10 - Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
B60T 13/10 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
68.
ELECTROMECHANICAL ACTUATOR FOR A VEHICLE BRAKING SYSTEM
The disclosed electromechanical actuator (10) for a vehicle braking system comprises a member (14) for converting a rotational movement into a translational movement, said member having a coating with a lubricating layer containing nickel and phosphorus.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16H 57/04 - Features relating to lubrication or cooling
69.
Disc brake comprising at least one elastic return spring for a brake pad, elastic return spring, replacement kit and mounting method
An elastic return spring for axially returning a brake pad of an automotive disc brake from an active position to an inactive position, the spring being intended to be interposed between the brake pad and a fixed support, with an elastic deformation portion, a carrier portion arranged to be fastened to the fixed support of the disc brake, and a pad portion. The carrier portion includes a support part and a connection part which including at least one connection fold arranged and configured to bear on an anchoring part of the fixed support and to cooperate with said anchoring part to avoid any lifting of the connection part.
F16D 65/54 - Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
F16D 55/225 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 125/58 - Mechanical mechanisms transmitting linear movement
70.
UNIT FOR ELECTRONICALLY CONTROLLING A MOTOR OF AN ELECTRIC PARKING BRAKE WITH A BOOST CONVERTER
The invention relates to a unit (1) for electronically controlling a motor (2) of an electric parking brake of a motor vehicle, comprising a boost converter (7) mounted on the power supply circuit (3) and arranged to increase the value of the power supply voltage supplied to means (5) for setting the voltage on the terminals of the motor (2). The invention also relates to a method for activating an electric parking brake of a motor vehicle using an electronic control unit (1) and to such a motor vehicle.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
71.
HOUSING FOR AN ELECTROMECHANICAL DISC BRAKE ACTUATOR COMPRISING A DAMPING ELEMENT
The invention relates to a housing (8) for an electromechanical actuator (7), the housing comprising an open face (11) on which a cover (12) is mounted for closing an opening of the open face (11), the housing being characterised in that it comprises damping elements (36) associated with the cover (12) and positioned between the cover (12) and the housing (8). The invention also relates to a disc brake caliper and a disc brake comprising such a housing (8) for an electromechanical actuator (7).
F16D 55/225 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
An electromechanical drum brake comprises two brake segments intended to come into contact with a drum, and at least one actuator configured to apply the segments against the drum, and an electric motor configured to activate the actuator, the actuator comprising at least one member which is movable upon activation of the actuator, the movable member being movable between a braking position and a position beyond a release position, in which the segments are no longer in contact with the drum. The actuator comprises a stop which is arranged only in the actuator and against which the movable element bears when it assumes a position beyond the release position, and the motor powers the actuator until the movable element bears against the stop.
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
F16D 51/24 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
An electromechanical actuator for a motor vehicle brake, comprising an electric motor absorbing a nominal rated current (In), a screw-and-nut movement converter including a screw with an axis (AX) extending in a longitudinal direction and a nut supported by the screw, and comprising at least one elastic return member for varying the resistance to forward motion in the longitudinal direction of an element being transferred between the nut and the screw at a predetermined position, in order to modify the nominal rating (In) of the current flowing through the motor while the element is being transferred to the predetermined position.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a method (E1) for measuring speed and/or position of a moving part (R1) within an electric motor (M1), in particular a rotating electric motor. An electronic control unit (ECU) performs the following steps: - activating (E10) said motor, and applying a supply voltage across the motor supply terminals (M19), - measuring (E12) a signal of the variation in intensity of the current and/or voltage at the supply terminals, - analysing (E13) said variation signal in order to detect one or more events (p1-p14, i1-i14) therein representing a movement of said moving part of said motor. An event may be a peak or pattern with an intensity that for example indicates a switching operation. This thus gives a direct measurement of the movement or of the speed of the motor, through electronic processing, without requiring any specific sensor in the motor or the actuator. The invention also relates to a control unit, or a motor or actuator, or a brake or a vehicle, implementing such a method.
G01P 3/48 - Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
H02K 23/00 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
75.
METHOD FOR OPTIMIZING AN ELECTRIC MOTOR WITH A VIEW TO MEASURING SPEED, MOVEMENT OR POSITION, IN PARTICULAR IN A MOTOR VEHICLE BRAKE ACTUATOR
The invention relates to a periodic electric motor, in particular a rotary periodic electric motor, comprising electrical switching means supplying each one of d poles with power only for a portion of a period. They absorb the current according to a time profile, covering only a portion of said period. At least one reference pole is arranged or switched so as to absorb a current according to a reference profile (p'3,p'10) different from the time profile of the other poles for one and the same supply voltage; to create in the motor power supply a signal with specific variations related to the switching of said reference poles, thereby allowing an electronic unit to detect these reference poles by measuring the supply voltage and/or current strength in order to detect these variations therein. A slip ring may comprise a reference contact with a different geometry. A switching or pole circuit may provide a circuit for creating an additional reference signal.
H02P 25/026 - Synchronous motors controlled by supply frequency thereby detecting the rotor position
B60T 13/00 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems
H02P 29/20 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for controlling one motor used for different sequential operations
H02P 29/40 - Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
H02P 1/04 - Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
76.
ELECTRIC MOTOR WITH SIMPLIFIED CONTROL AND MOTOR VEHICLE PARKING BRAKE IMPLEMENTING SUCH A MOTOR
Electric motor comprising a stator (2) and a rotor (4), the rotor (4) surrounding the stator (2), the rotor (4) being configured to rotate about a longitudinal axis X, wherein pairs of coils (12) are supported by the rotor (4) and the m pairs of poles are supported by the stator (2), electrical connection means intended to supply the motor with continuous current and rotating means for collecting and switching n pairs of coils (12) distributed between the rotor and the stator. The means comprise two concentric circular electrically conductive tracks (26, 28) which have an axis X and are supported by the base of the rotor (4), two first brushes (30, 32) electrically and mechanically connected to the two electrical tracks (26, 28) and switching tracks (14) which are supported by the stator (2) and electrically isolated from each other, each switching track (14) being electrically connected to a coil (12), the first brushes (30, 32) being arranged in a diametrically opposed manner so as to engage simultaneously with two diametrically opposed switching tracks (14) and sequentially with the switching tracks.
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
H02K 23/04 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
H02K 21/22 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
77.
GEARED MOTOR FOR A VEHICLE BRAKE ACTUATOR WITH INCREASED SERVICE LIFE
The invention relates to a geared motor for an electromechanical actuator for a motor vehicle brake, comprising a casing (31), an electric motor and a planetary reduction gear (18) housing the casing (31), the casing comprising a shell (33) which defines a chamber (32b), the planetary reduction gear (18) including a ring gear (19) forming a kinematic rack which is installed in the chamber, said ring gear being defined by an outer surface (37). The ring gear is held in place by tabs (39) which protrude from the shell (33) within the chamber (32b), said tabs (39) being configured to be elastically deformed by the ring gear (19) so as to mutually clamp the outer surface (37) under the action of the elastic return means. Figure for the abstract: Figure 4
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 125/50 - Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
A ball screw mechanism (6) to which a movable brake pad (5) is attached, in a brake without an external guide piston, is guided by an internal guide part (18), a support face (21) of which is mounted on a part (9, 10) belonging to a movement transmission cartridge in a housing (2) of the brake and supported (14) by the fixed part (1) of the brake. The radial forces exerted on the pad (5) during braking are then primarily taken up by the guide part (18), which unloads the balls present between the screw (6) and the nut (13) and which control the deployment of the screw (6).
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a noise-damping device (1) for a geared motor unit (2) comprising a housing (3) containing an electric motor (4), having an axis, and a reduction mechanism (5), the device comprising two coaxial rings (11, 12), connected radially to one another by a connection ring (13), comprising a first ring (11) positioned inside a second ring (12), said damping device (1) being able to be positioned at an end part of the electric motor (4), the first and second rings being arranged against the end part of the electric motor (4) so as to damp the movements of the electric motor (4) in the housing (3) in radial and axial directions.
F16F 1/373 - Springs made of plastics, e.g. rubberSprings made of material having high internal friction characterised by having a particular shape
F16F 1/376 - Springs made of plastics, e.g. rubberSprings made of material having high internal friction characterised by having a particular shape having projections, studs, serrations or the like on at least one surface
F16F 1/44 - Springs made of plastics, e.g. rubberSprings made of material having high internal friction characterised by the mode of stressing loaded mainly in compression
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention relates to a method for controlling the tightening torque of an electromechanical brake (1) for a motor vehicle. The brake (1) comprises an electric motor (2) provided with a rotary shaft intended to drive mechanical brake clamping means (3). The method comprises the following steps: - determining an indicator, referred to as the reaction torque observer (6), which characterises at least one reaction of the mechanical brake clamping means (3) according to a rotational speed (7) of the rotary shaft of the electric motor (2) and an intensity (8) of a power supply current of the electric motor; and - regulating the tightening torque of the brake according to the reaction torque observer.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
H02P 15/00 - Arrangements for controlling dynamo-electric brakes or clutches
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
H02P 29/40 - Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
B60T 13/00 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems
81.
METHOD FOR CONTROLLING THE TIGHTENING TORQUE OF AN IMPROVED ELECTROMECHANICAL BRAKE
The invention relates to a method for controlling the tightening torque of an electromechanical brake for a motor vehicle, the brake comprising an electric motor provided with a rotary shaft intended to drive mechanical brake-clamping means. The method comprises the following steps: - acquiring data from a wheel speed sensor (32) that takes a characteristic measurement of the speed of at least one of the wheels of the vehicle; - determining, according to the data from the wheel speed sensor (32), a deceleration indicator characteristic of the acceleration of the vehicle; - regulating the tightening torque according to the deceleration indicator.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
A reduction motor for a parking brake mechanical actuator of a drum brake comprising an electric motor and a reduction gearbox, in which the electric motor comprises an output shaft extending along a first axis, the reduction gearbox comprises an output shaft extending along a second axis, and in which the reduction motor also comprises at least one angle gear between the electric motor and the reduction gearbox or at the output of the reduction gearbox, the angle gear comprising a crown gear-pair comprising a pinion and a crown gear, the pinion being engaged with the output shaft of the electric motor and meshing with the crown gear which is a part of the reduction gearbox.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
F16H 1/20 - Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
F16D 51/20 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
A gear motor (2) equipping a disc brake comprises an electrical connector (11) protruding out of the housing (3) and vulnerable to impacts or flying objects such as stones, mud or blocks of ice thrown up by the wheel. A rigid protection structure (17) is constructed separately from the brake casing and extends in front of the connector (11) in relation to possible paths of the dangerous objects. This structure (17) is assembled to an extension (16) of a rod (15) of one of the brake guide pins (7), connecting a clevis (5) to a calliper (1). It is no longer necessary to construct the casing with ribs that would complicate its manufacture.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/2265 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially the axial movement being guided by one or more pins
84.
HELICAL CONNECTION MECHANISM FOR ELECTROMECHANICAL BRAKE CALIPER PISTON WITH SIMPLIFIED MOUNTING
The invention relates to a helical connection mechanism for an electromechanical brake piston configured to be mounted inside the piston, comprising a bushing (13) and a drive member (9) cooperating via a helical connection with longitudinal axis (AX), and means (14) for blocking the rotation of the bushing relative to the piston about the longitudinal axis (AX) and for axially retaining the mechanism, said means comprising a plate (28) secured on the bushing (13) and extending orthogonally to the longitudinal axis (AX), at least three axial extensions (32) cooperating with an axial wall of the piston and at least one radial shape (40) cooperating with the axial wall of the piston.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
85.
BRAKE CALLIPER FOR A VEHICLE COMPRISING A BRAKING CONTROL UNIT
A calliper for an electromechanical disc brake for a vehicle wheel. The calliper comprises a control unit configured to control the braking of the wheel, the control unit being intended to be electrically connected to a braking control line of the vehicle.
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
B60Q 1/44 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/17 - Using electrical or electronic regulation means to control braking
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