Abstract

The invention relates to a friction surface clutch (10) for use in motor vehicles, in particular for switching an air compressor or the like, wherein the friction surface clutch comprises a first cone element (11) having a first friction surface (12) and a second cone element (13) having a second friction surface (14), wherein the friction surface clutch comprises an actuation apparatus (15) having an actuating element (16) for frictionally connecting and disconnecting the cone elements, wherein the cone elements are frictionally connected when the friction surface clutch is in an unactuated operating state, wherein the actuation apparatus has a pressure element (21) coupled to the actuating element and a lever device (22) which interacts with the first cone element, wherein the pressure element can be brought into engagement with the lever device when the friction surface clutch is in an actuated operating state such that the frictional connection can be released, the first cone element having a guide in which the pressure element can be guided, latched and secured against rotation, relative to the first cone element before reaching a wear limit of the friction surfaces and can be brought into engagement with the lever device in order to release the frictional connection, the pressure element being able to be unlatched from the guide, so as to leave the guide, when the wear limit of the friction surfaces is reached, such that the pressure element can no longer be brought into engagement with the lever device after leaving the guide and therefore the frictional connection can no longer be released.

IPC Classes  ?

• F16D 25/08 - Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
• F16D 25/12 - Details not specific to one of the before-mentioned types
• F16D 13/30 - Friction clutches with axially-movable clutching members with conical friction surfaces in which the or each axially-movable member is pressed exclusively against an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
• F16D 23/12 - Mechanical clutch-actuating mechanisms arranged outside the clutch as such

Abstract

The invention relates to a double-armature solenoid valve (1), in particular for discharging water from fuel systems in motor vehicles, comprising: a first armature (2) and a second armature (3), which lie axially opposite each other along a common movement axis and can be axially moved toward each other into respective open positions and away from each other into respective closed positions; coil means (4), which are preferably arranged on the periphery of both armatures (2, 3), for producing a magnetic flux in both armatures (2, 3) in order to move the armatures toward each other along the movement axis; and at least one first restoring spring (10), which applies spring force to the first armature (2) axially away from the second armature (3), and at least one second restoring spring (11), which applies spring force to the second armature (3) axially away from the first armature (2), wherein a first sealing element (13), preferably arranged on the first armature (2), for sealing an inlet opening (8) for pressurized fluid, in particular water from a motor-vehicle fuel system, which inlet opening is arranged on the axial side of the first armature (2) facing away from the second armature (3), is associated with the first armature (2) and wherein a second sealing element (14), preferably arranged on the second armature (3), for sealing an outlet opening (9) for the fluid, which outlet opening is arranged on the axial side of the second armature (3) facing away from the first armature (2), is associated with the second armature (3), wherein the inlet opening (8) and the outlet opening (9) are connected in a fluid-conducting manner by means of a fluid channel, which is preferably formed by an armature chamber (5) that holds the armatures (2, 3).

IPC Classes  ?

• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

The invention relates to a cooling circuit arrangement (1) for cooling an engine (2), in particular a motor vehicle combustion engine, by means of a cooling medium which can be conveyed by a cooling medium pump (4) in a cooling medium circuit (3) between a suction side (S) and a pressure side (P), comprising a cooler fluid path (7) passing through a cooler (6) and comprising a bypass fluid path (5), wherein a cooling medium valve (8) is arranged in the cooling medium circuit (3), said valve having an actuator (9) and functioning to set a volume flow ratio between the cooling medium flows flowing through the cooler fluid path (7) and the bypass fluid path (5). According to the invention, the actuator (9) has a hydraulically actuatable adjustment element (17) which can be supplied with cooling medium from the cooling medium circuit (3), in particular from the pressure side (P), via at least one control valve (11) associated wth the cooling medium valve (8), in order to adjust the volume flow ratio.

IPC Classes  ?

• F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
• F01P 7/14 - Controlling of coolant flow the coolant being liquid
• F01P 7/16 - Controlling of coolant flow the coolant being liquid by thermostatic control

Abstract

The invention relates to a clutch (2) for driving a unit (4), in particular a compressor, which clutch can be mounted on a shaft (3), said clutch comprising a rotor assembly (7) and a hub assembly (9), which has a friction disk (11) that can be axially moved in relation to the rotor assembly (7) by applying current to an electromagnet (5), which hub assembly is designed to transmit a torque between the hub assembly (9) and the rotor assembly (7) when the friction disk (11) lies against the rotor assembly (7), wherein the hub assembly (9) has means, in particular a set of teeth, for connecting to the shaft (3), preferably to a shaft segment having a cylindrical enveloping contour, in a rotationally fixed manner and wherein the clutch (2) has adjusting means for adjusting an air gap (25) between the friction disk (11) and the rotor assembly (7), and wherein the clutch (2) comprises a fastening threaded element (16), by means of which the rotor assembly (7) can be axially secured on the shaft (3). According to the invention, the adjusting means have an adjusting threaded element (17) for axially supporting the rotor assembly (7) on the shaft (3), which adjusting threaded element is connected to the rotor assembly (7) by means of a threaded connection (18), and, only when the fastening threaded element (16) is loosened, in particular removed, the adjusting threaded element (17) can be moved axially in relation to the rotor assembly (7) by means of rotation in a circumferential direction because of the threaded connection (18) in order to adjust the air gap (25), and force can be applied to the hub assembly (9) axially toward the adjusting threaded element (17) by means of the fastening threaded element (16).

IPC Classes  ?

• F16D 27/112 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
• F16D 1/108 - Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
• F16D 27/14 - Magnetically-actuated clutchesControl or electric circuits therefor Details

Abstract

The invention relates to a device (1) for transmitting torque for driving an auxiliary unit, in particular a dynamo, preferably in a motor vehicle, and for damping torsional vibrations, the device comprising driving means (2) that can be driven about an axis of rotation (4) by an internal combustion engine, as well as driven means (3) rotatable about the axis of rotation (4) and designed for driving the auxiliary unit, wherein at least one axial front face of the driving means (2) and/or driven means (3) carries permanent magnet means (10, 11) which allow torque to be transmitted between the driving means (2) and the driven means (3) and which allow torsional vibrations to be dampened, the poles (13, 14, 15, 16) of the permanent magnet means (10, 11) being located in at least one radial plane. According to the invention, the permanent magnet means (10, 11) comprise a plurality of permanent magnet elements (17) arranged next to each other in the circumferential direction, these permanent magnets (17) adjoining each other, in particular directly, or being secured to each other via an adhesive layer of less than 2 mm thickness, and/or the permanent magnet means (10, 11) comprise at least one shaped part made of plastics, in particular an injection-moulded part made of plastics and/or a shaped part made of a sintered material, and/or the permanent magnet means (10, 11) are arranged on a geometrical, preferably concentric annular orbit, preferably an elliptic orbit (27, 28), which deviates from a concentric circular orbit.

IPC Classes  ?

• F16F 15/18 - Suppression of vibrations in rotating systems by making use of members moving with the system using electric means

Abstract

The invention relates to a coupling assembly (1) for transferring a drive torque from a drive shaft (2) to a secondary unit, in particular to a fan wheel, of a motor vehicle, comprising a drive shaft (2), an output shaft (9) comprising at least one friction surface (20, 30), an armature (7) that is adjustable relative to the output shaft (9) by energizing an energizable winding (4), said armature having a friction disc coupling means comprising a friction surface (19, 25), and at least one liquid friction coupling means comprising a shear gap (21, 29, 52) filled with a fluid (16). According to the invention, the friction disc coupling means and the liquid friction coupling means are part of a common coupling (14) designed as a combined friction disc/liquid friction coupling, wherein the adjustable armature (7) delimits the shear gap (21, 29, 52).

IPC Classes  ?

• F16D 47/06 - Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: of which at least one is a clutch with a fluid or a semifluid as power-transmitting means
• F16D 27/112 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs