An actuating drive including a housing, which comprises a housing trough and a housing cover, an electric motor arranged in the housing, a gear unit arranged in the housing that has an output gear, and a position detection unit arranged in the housing for detecting a rotational angle position of the output gear, which detection unit comprises a magnet arranged on a rotary axle of the output gear, and a magnetic field sensor unit having a magnetic field sensor designed to detect a magnetic field of the magnet. It is proposed that he housing trough of the housing has a receiving region in which the magnetic field sensor unit is arranged such that the rotary axle of the output gear extends through the magnetic field sensor of the magnetic field sensor unit.
Provided is, for example, a sensor device having a structure that can be easily thinned. For example, a sensor device (100, 200, 300) comprises: a shaft (S); a strain-generating body (101) that has a surface (101a) extending in the radial direction; a bearing (102) that connects the shaft (S) and the strain-generating body (101) in the radial direction; a holder (104) that rotates together with a ring (102r) of the bearing (102); a strain sensor (103) that is attached to the surface (101a); and a substrate (105), wherein the strain sensor (103) and the substrate (105) are electrically connected to each other.
F16C 19/04 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
In the present invention, a magnetic gear device (1) comprises a first magnet (11) in which a plurality of first magnetic poles (111) are disposed in the circumferential direction (C), a second magnet (12) in which a plurality of second magnetic poles (121) are disposed in the circumferential direction (C), a first pole piece (13) that is positioned between the first magnet (11) and the second magnet (12) in the radial direction (R) and that magnetically connects the first magnet (11) and the second magnet (12), a third magnet (14) in which a plurality of third magnetic poles (141) are disposed in the circumferential direction (C), a fourth magnet (15) in which a plurality of fourth magnetic poles (151) are disposed in the circumferential direction (C), and a second pole piece (16) that is positioned between the third magnet (14) and the fourth magnet (15) in the radial direction (R) and that magnetically connects the third magnet (14) and the fourth magnet (15). The first magnet (11) and the fourth magnet (15) are connected in the axial direction (A), the fourth magnet (15) rotates together with the first magnet (11), the number of first magnetic poles (111) of the first magnet (11) is greater than the number of second magnetic poles (121) of the second magnet (12), the number of third magnetic poles (141) of the third magnet (14) is greater than the number of fourth magnetic poles (151) of the fourth magnet (15), and at least one of the first to fourth magnets (11‒15) is ring-shaped.
A power transmission device (100) is provided with an input-side device (2) and a magnetic gear device (1) to which the driving force of the input-side device (2) is directly or indirectly transmitted. The magnetic gear device (1) is a harmonic-type magnetic gear device and at least includes: a first magnet (11) in which a plurality of first magnetic poles (111) are disposed in the circumferential direction (C); a second magnet (12) in which a plurality of second magnetic poles (121) are disposed in the circumferential direction (C); pole pieces (13) positioned between the first magnet (11) and the second magnet (12) and magnetically connecting the first magnet (11) and the second magnet (12); a first sensor (SE1) for detecting, at a detection point, a change in magnetic flux density of a magnetic field created by the magnetic poles of either the first magnet (11) or the second magnet (12); and a calculation unit (41) for outputting information pertaining to the magnetic gear device (1) on the basis of the detection result of the first sensor (SE1).
[Problem] To provide a hydrogen recirculation blower that is for a fuel cell system and that comprises a bearing which has excellent durability in a high temperature humid environment , and in which lubrication performance is maintained even in an environment where water exists. [Solution] This hydrogen recirculation blower for a fuel cell system is provided with a rolling bearing. The rolling bearing has an inner ring, an outer ring, and rolling elements, has grease in an annular bearing space formed between the inner ring and the outer ring, and has a rubber seal for sealing the bearing space. The grease contains an organic acid metal salt at a proportion of 0.05-1 mass% with respect to the total amount of the grease. After a high-temperature and high-humidity test (1) under the conditions of 130°C and 100%RH for 48 hours, the grease exhibits a volume expansion rate of less than 60% as compared to before the test (1). After a high-temperature and high-humidity test (2) in which 1.3 g of the grease is made to coexist with 10 mL of pure water in a sealed container having a capacity of 100 mL and is left to stand for 48 hours under the condition of 120°C, the reduction rate of the organic acid metal salt from as compared to before the test (2) is not more than 50%. This rolling bearing is provided in said blower.
H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
C10M 105/52 - Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen and halogen only
C10M 105/54 - Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen, halogen and oxygen
C10M 107/02 - Hydrocarbon polymersHydrocarbon polymers modified by oxidation
C10M 115/08 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
C10M 119/22 - Lubricating compositions characterised by the thickener being a macromolecular compound containing halogen
C10M 169/02 - Mixtures of base-materials and thickeners
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
The present invention is capable of easily confirming a rotation direction of a rotating component in assembly while securing a region for performing winding. In this single-phase motor, a stator core (20) has: an annular ring (22); branches (23) extending radially outward from the ring (22); and a plurality of magnetic pole portions (24) connected to the branches (23) and aligned in the circumferential direction. The magnetic pole portion (24) has: a first surface (241) that extends from the branch (23) to one side in the circumferential direction and faces the ring (22) in the radial direction; and a second surface (242) that extends to the other side in the circumferential direction and faces the ring (22) in the radial direction. In the radial direction, the stator core (20) has a distance (L1) from the first surfaces (241) to the ring (22) and a distance (L2) from the second surface (242) to the ring (22), which are different from each other. An insulator (25) is bonded to the branch (23), the first surface (241), and the second surface (242).
This method for manufacturing a multipolar magnet comprises: a first step for changing the distribution of a rare-earth-based material in a hot-worked magnet (10) that has a plurality of magnetic powders containing said rare-earth-based material; and a second step for magnetizing the hot-worked magnet (10) that has undergone the first step, and obtaining a multipolar magnet (20) comprising a plurality of magnetic pole portions. In the first step, it is preferable to increase the amount of the rare earth-based material interposed between the plurality of magnetic powders to change the distribution of the rare-earth-based material in the hot-worked magnet (10). In the first step, it is more preferable to heat the hot-worked magnet (10) at a predetermined temperature to change the distribution of the rare-earth-based material in the hot-worked magnet (10).
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 13/00 - Apparatus or processes for magnetising or demagnetising
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
This magnetic gear device (1) is provided with: a first magnet (11) in which a plurality of first magnetic poles (111) are disposed in the circumferential direction; a second magnet (12) in which a plurality of second magnetic poles (121) are disposed in the circumferential direction; and a pole piece (13) that is positioned between the first magnet (11) and the second magnet (12) and magnetically connects the first magnet (11) and the second magnet (12). One of the plurality of first magnetic poles (111) of the first magnet (11) and the plurality of second magnetic poles (121) of the second magnet (12) has a ring shape formed integrally. The first magnetic poles (111) of the first magnet (11) are more in number than the second magnetic poles (121) of the second magnet (12).
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
A power transmission apparatus (100) comprises a magnetic gear device (1) and a mechanical gear device (3) connected to the magnetic gear device (1), wherein the magnetic gear device (1) is a harmonic-type magnetic gear device.
A motive force transmission device (100) comprises: a motor (2) that has a stator (21) and a rotor (22) that is provided so as to be capable of rotating relative to the stator (21); and a magnetic gear device (1) to which drive force is transmitted directly from the motor (2). The magnetic gear device (1) comprises at least: a first magnet (11) at which a plurality of first magnetic poles (111) are arranged in the circumferential direction (C); a second magnet (12) at which a plurality of second magnetic poles (121) are arranged in the circumferential direction (C); and a pole piece (13) that is positioned between the first magnet (11) and the second magnet (12) and magnetically connects the first magnet (11) and the second magnet (12). At least one of the first magnet (11) and the second magnet (12) is ring-shaped, and the magnetic gear device (1) is a harmonic-type magnetic gear device.
The present invention prevents a held object from falling out. A holding device (1) is provided with: a holding part (7) that is for holding an object (200); a drive mechanism (6) that drives the holding part (7) in accordance with a rotational force of a motor (5) and that has a self-locking function which limits the movement of the holding part (7) while the energization of the motor 5 is stopped; and a motor drive control device (2) that drives the motor (5). When a drive command signal (Sc) including information indicating driving the holding part (7) is input, the motor drive control device (2) drives the motor (5) so that the holding part (7) holds the object (200). If stepping-out of the motor (5) is detected, the motor drive control device (2) supplies the motor (5) with a smaller current than that supplied to the motor (5) before the stepping-out detection, thereby fixing a rotor (50) of the motor (5).
A motor drive control device includes a drive circuit for driving a motor based on a drive control signal, and a control circuit for calculating an operation amount of the motor so that the motor rotates at a target rotation speed based on a drive command signal specifying a target rotation speed and generates and outputs a drive control signal corresponding to the operation amount. The control circuit sets a change rate of an operation amount to be smaller the closer the operation amount to a target operation amount corresponding to the target rotation speed when decelerating the motor according to a change in the target rotation speed, and the control circuit changes the operation amount in accordance with the change rate so that the operation amount coincides with the target operation amount after change when decelerating the motor according to a change in the target rotation speed.
A motor (1) comprises: a stator (4) provided with a terminal (6); and a bus bar (5) provided to the stator (4) and having a hole (51H). A side surface of the hole (51H) of the bus bar (5) and a portion (602) of the terminal (6) are connected.
Provided is a vibration actuator that includes: a base part having a plate shape on which an electromagnet having a plate shape and including a core and a coil is disposed; a movable part including a magnetic yoke having a plate shape and disposed with a gap from the electromagnet in a thickness direction of the electromagnet; and an elastic body configured to support the magnetic yoke at the base part such that when the electromagnet is energized the magnetic yoke comes closer to the base part in the thickness direction, wherein the movable part has a shape configured to accommodate a part of the coil at a position facing the coil.
H02K 33/06 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation with polarised armatures
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/00 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/04 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
15.
FLUID DYNAMIC PRESSURE BEARING OIL, SPINDLE MOTOR, AND DISK DRIVE DEVICE
Object
Object
To provide a fluid dynamic pressure bearing oil and a fluid dynamic pressure bearing filled with the fluid dynamic pressure bearing oil, and to provide a spindle motor and a disk drive device including the spindle motor in which the fluid dynamic pressure bearing oil and the bearing are used, thereby suppressing adhesion of a volatile component to a magnetic disk or the like even when the fluid dynamic pressure bearing oil is volatilized, so that occurrence of HDD read/write errors can be suppressed.
Object
To provide a fluid dynamic pressure bearing oil and a fluid dynamic pressure bearing filled with the fluid dynamic pressure bearing oil, and to provide a spindle motor and a disk drive device including the spindle motor in which the fluid dynamic pressure bearing oil and the bearing are used, thereby suppressing adhesion of a volatile component to a magnetic disk or the like even when the fluid dynamic pressure bearing oil is volatilized, so that occurrence of HDD read/write errors can be suppressed.
Solution
Object
To provide a fluid dynamic pressure bearing oil and a fluid dynamic pressure bearing filled with the fluid dynamic pressure bearing oil, and to provide a spindle motor and a disk drive device including the spindle motor in which the fluid dynamic pressure bearing oil and the bearing are used, thereby suppressing adhesion of a volatile component to a magnetic disk or the like even when the fluid dynamic pressure bearing oil is volatilized, so that occurrence of HDD read/write errors can be suppressed.
Solution
A fluid dynamic pressure bearing oil contains at least one compound selected from the group consisting of a monoester compound represented by the following Formula (1) and a diester compound represented by the following Formula (2): R1—C(═O)O—R2 (1) (where R1 is an alkyl group having 10 or more carbon atoms in total, R2 is an alkyl group having 9 or more carbon atoms in total, and R3-E1-R4-E2-R5 (2) (where R3 and R5 are each independently an alkyl group having 8 or more carbon atoms in total, R4 is an alkylene group having 4 or more carbon atoms in total, and E1 and E2 are each independently —C(═O)O— or —OC(═O)—.
C10N 20/00 - Specified physical properties of component of lubricating compositions
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/10 - Inhibition of oxidation, e.g. anti-oxidants
The present invention provides a control device that makes it possible to suppress the occurrence of an abnormal sound in an electrically assisted bicycle and an electrically assisted bicycle that is capable of suppressing the occurrence of an abnormal sound. A control device (50) sets a level at which rotation of pedals (4) is assisted when a ratio (R) between a rotational speed (Nw) (rpm) of wheels and a rotational speed (Nm) (rpm) of a motor (40) is within a prescribed range (Ra) such that said level is higher than a level at which the rotation of the pedals (4) is assisted when the ratio (R) between the rotational speed (Nw) (rpm) of the wheels and the rotational speed (Nm) (rpm) of the motor (40) is outside the prescribed range.
Provided are an electric-assist bicycle and a gear ratio determination method for an electric-assist bicycle that can reduce the risk of incorrect gear ratio determination and that identify a gear ratio with high accuracy. In an electric-assist bicycle (1), the time from when a first gear ratio is changed to a second gear ratio until assisting of a pedal (4) corresponding to the second gear ratio is started is different from the time from when a third gear ratio is changed to a fourth gear ratio until assisting of the pedal (4) corresponding to the fourth gear ratio is started.
Provided is a control device capable of keeping abnormal noise from being produced in an electrically assisted bicycle. In the present invention, a control device (50) causes the degree of assistance that is to be provided to the rotation of a pedal (4) when the ratio R between the speed Nw (rpm) of a wheel and the speed Nm (rpm) of a motor (40) is within a predetermined range Ra to exceed the degree of assistance that is to be provided to the rotation of the pedal (4) when the ratio R between the speed Nw (rpm) of the wheel and the speed Nm (rpm) of the motor (40) is outside the predetermined range Ra.
An angle sensor (1) comprises: a cylinder (10) including a plurality of pillars (20) extending in a radial direction; and a plurality of outer coils (30) and a plurality of inner coils (40) wound around the plurality of pillars (20). The outer coils (30) are each provided with one end portion (31) and another end portion (32) in the circumferential direction. Furthermore, the inner coils (40) are each provided with one end portion (41) and another end portion (42) in the circumferential direction. The plurality of outer coils (30) and the plurality of inner coils (40) are separated in the radial direction.
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
An angle sensor (1) comprises: a cylinder (10) having a side surface (11) extending in the circumferential direction; and a coil (30) fixed to the side surface (11). The side surface (11) of the cylinder (10) has provided thereto a plurality of lattice bodies (20) arranged in the circumferential direction and the axial-line x-direction, and a conductive wire (31) for forming the coil (30) is fitted in a gap between the plurality of lattice bodies (20).
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
The present invention provides an electrically assisted bicycle that can suppress a metal sound and unnecessary rotation of pedals during gear change. Provided is an electrically assisted bicycle (1) wherein the magnitude of assistance with pedals (4) is limited from when a first transmission gear ratio is changed to a second transmission gear ratio until when the assistance with the pedals (4) which corresponds to the second transmission gear ratio is started.
Pulse wave sensor includes strain generating body with circular opening, resin layer covering strain generating body's one surface, and strain gauge provided on strain generating body's other surface opposite to one surface and including Cr mixed phase film as resistor. Where circular opening diameter is d [mm] and strain generating body thickness is t [mm], when material of strain generating body is SUS and d is 32, 22, 13, and 7, required range of t is 0.059≤t≤0.124, 0.046≤t≤0.099, 0.030≤t≤0.067, and 0.026≤t≤0.034, respectively, when the material is copper and d is 32, 22, 13, and 7, required range of t is 0.084≤t≤0.166, 0.066≤t≤0.132, 0.044≤t≤0.088, and 0.032≤t≤0.050, respectively, and when the material is aluminum and d is 32, 22, 13, and 7, required range of t is 0.097≤t≤0.212, 0.079≤t<0.168, 0.050<<0.107, 0.038
A door opening and closing apparatus includes a setting unit configured to set at least a part of one of a first detection range and a second detection range as a start zone in which a first phase of a setting movement made by a detection target is to be detected, and to set a part of another one of the first detection range and the second detection range as a trigger zone in which a second phase of the setting movement is to be detected, based on first distances measured by a measurement unit. Upon determining that the detection target has made the setting movement including a movement between the start zone and the trigger, based on changes in the distances measured by the measurement unit, the control unit causes a driving unit to open or to close the door.
A motor includes a shaft including one end part and the other end part, a tube, a bearing rotatably supporting one of the shaft and the tube and fixed to the other of the shaft and the tube, a lid covering the bearing and the tube, and an urging structure. The lid includes a first wall fixed to the shaft and a second wall fixed to the tube, the first wall and the second wall oppose each other directly or via a washer in a longitudinal direction of the shaft, and the urging structure urges the first wall toward the second wall in the longitudinal direction of the shaft.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
A strain gauge includes a substrate and a resistor formed over the substrate. The resistor is made of a material containing Cr as a main component. A line width of the resistor is 70 μm or less such that a transverse sensitivity ratio of the strain gauge is equal to or less than 70% and a gauge factor of the strain gauge is equal to or greater than 5.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
An angle sensor (1) comprises a rotor (2) and a stator (3). The rotor (2) includes a cylinder (10) and a plurality of conductor bodies (5) fixed to the cylinder (10). The stator (3) includes a plurality of coils (20) arranged in the circumferential direction of the cylinder (10). The rotor (2) and the plurality of coils (20) face each other in the radial direction of the cylinder (10). Parts of conductive wires (30) that are led out from the coils (20) are positioned in the stator (3).
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
An angle sensor (1) is provided with a rotor (2) and a stator (3). The rotor (2) includes: an inner member (10) that is an inner tubular member; an outer member (20) that is an outer tubular member; and a plurality of metal bodies (30). The stator (3) includes a plurality of coils (40) facing the rotor (2). In the radial direction, the plurality of metal bodies (30) are sandwiched by the inner member (10) and the outer member (20).
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
28.
MOTOR CONTROL DEVICE, MOTOR SYSTEM, AND MOTOR CONTROL METHOD
This motor control method includes: generating PWM signals of respective phases with duty ratios each having the same value, the PWM signals including, in one cycle, a first period in which a part of an arm in an inverter is turned on in a first energization pattern during idling of a rotor and a second period in which a part of the arm in the inverter is turned on in a second energization pattern during the idling; detecting a first current value of a first phase flowing in the first period and a second current value of the first phase flowing in the second period with a current detector provided on the DC side of the inverter; and deriving an offset current value of the first phase by calculation using one of the first current values detected in the first period or a plurality of the first current values detected in each of the first periods, and a plurality of the second current values detected in each of the second periods.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
One of the objects is to provide a motor capable of suppressing a reduction of a lifespan. A motor includes a shaft, a first bearing disposed at one side in an axial direction of the shaft, a second bearing disposed at another side in the axial direction of the shaft, and a bearing housing being a holding member configured to hold the first bearing and the second bearing. In the radial direction, a distance between the first bearing and the holding member is smaller than a distance between the second bearing and the bearing housing.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
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
In a reduction gear (5), a side part (50a) of a first gear (50) and a side part (51a) of a second gear (51), which fit together in the radial direction, form a recessed part (62).
F16H 57/04 - Features relating to lubrication or cooling
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
A motor includes a shaft, a stator, and a rotor. The rotor includes a yoke and a magnet. The yoke includes an annular part, a magnetic pole part, a connection part, and a gap. The annular part is disposed at an inner side in a radial direction. The magnetic pole part is disposed at an outer side in a radial direction and is in contact with the magnet. The connection part connects the annular part and the magnetic pole part. The gap is formed between the magnetic pole part and the connection part in the circumferential direction. The magnetic flux at the inner diameter side of the magnet passes through an outer peripheral surface of the magnetic pole part.
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
According to the present invention, a magnetic body contains a plurality of magnetic particles, is cylindrical, and comprises an end surface extending in the radial direction and an outer circumferential surface extending in the axial direction, wherein the outer circumferential surface comprises a plurality of magnetic poles in the circumferential direction, the end surface forms a reference plane, the residual flux density of the end surface in the axial direction is greater than the residual flux density of the outer circumferential surface in the radial direction, and the relative density of the magnetic particles exceeds 95%. Also, the magnetic body contains a plurality of magnetic particles, is ring-shaped, and comprises an end surface extending in the radial direction and outer and inner circumferential surfaces extending in the axial direction, wherein the outer circumferential surface and/or the inner circumferential surface comprises a plurality of magnetic poles in the circumferential direction, the end surface forms a reference plane, the residual flux density of the end surface in the axial direction is greater than the residual flux density of the outer circumferential surface in the radial direction, and the relative density of the magnetic particles exceeds 95%.
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Provided is a magnetic body which comprises a plurality of magnetic particles, is cylindrical, and is provided with an end surface that extends radially and an outer circumferential surface that extends axially. The end surface has a plurality of magnetic poles in the axial direction. The end surface forms a reference surface. The residual magnetic flux density of the end surface in the axial direction is greater than the residual magnetic flux density of the outer circumferential surface in the radial direction. The relative density of the magnetic particles is more than 95%. Also provided is magnetic body which comprises a plurality of magnetic particles, is ring-shaped, and is provided with an end surface that extends radially and an outer circumferential surface and inner circumferential surface that extend axially. The end surface has a plurality of magnetic poles in the axial direction. The end surface forms a reference surface. The residual magnetic flux density of the end surface in the axial direction is greater than the residual magnetic flux density of the outer circumferential surface in the radial direction. The relative density of the magnetic particles is more than 95%.
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
A motor and a rotary blade device capable of increasing dustproof and waterproof performance is provided. A motor includes an annular rotor and a stator opposing the rotor. The rotor includes a magnet and a housing covering the magnet. The stator includes a coil and a holder holding the coil. The housing includes a first projecting part projecting toward the holder. The holder includes a second projecting part projecting toward the housing. The second projecting part opposes the first projecting part via a gap in a radial direction.
This coated magnetic material comprises: an annular magnetic material body including magnetic particles and a resin cured product of a thermosetting resin; and a coating film covering the magnetic material body. The coated magnetic material has two end surfaces extending in the radial direction, and an inner peripheral surface and an outer peripheral surface disposed between the two end surfaces in the axial direction. The two end surfaces form reference surfaces parallel to each other, or the outer peripheral surface and the inner peripheral surface are coaxial.
G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/053 - Alloys characterised by their composition containing rare earth metals
36.
SUPPORT SURFACE MOVEMENT CONTROL DEVICE AND SUPPORT EQUIPMENT
A support surface movement control device (30) that controls movement of a support surface (520) which supports the body of a user (U) comprises: a body information acquisition unit (32) that acquires body information of the user on the support surface; and a movement control unit (34) that automatically initiates and executes movement control for moving the support surface. In the movement control, the movement control unit restricts movement of the support surface when the body information satisfies a restriction condition.
Provided is a vehicle cabin illumination device which can be inexpensively constituted with less attenuation of light intensity. The vehicle cabin illumination device is provided with a light source, and a translucent cover, wherein the cover is provided with a light-entering portion to which illumination light from the light source is irradiated, and a reflector which is formed on a surface opposite to cabin side of a vehicle and reflects the illumination light entering the cover toward the cabin side of the vehicle, wherein the light-entering portion has a translucent portion that passes some of the illumination light from the light source toward the cabin side of the vehicle, and an incident portion that enters some of the illumination light from the light source toward inside of the cover.
B60Q 3/64 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
B60Q 3/74 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lightingArrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
B60Q 3/76 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose for spotlighting, e.g. reading lamps
A planar illumination device according to an embodiment includes a substrate, a first optical element, a second optical element, a third optical element, a pair of fourth and fifth optical elements, and a sixth optical element. A plurality of light sources are two-dimensionally arranged on the substrate. The first optical element is arranged at an emission side of the plurality of light sources to condense light emitted from the plurality of light sources. The second optical element is arranged at an emission side of the first optical element to tilt light distribution of the light condensed by the first optical element in a first axial direction within an emission surface. The third optical element is arranged at an emission side of the second optical element to spread the light tilted by the second optical element in the first axial direction. The pair of fourth and fifth optical elements are arranged at the emission side of the plurality of light sources to spread light in a second axial direction orthogonal to the first axial direction within an emission surface. The sixth optical element is formed by combining the second optical element and the third optical element to substitute for the second optical element and the third optical element.
A strain gauge includes a substrate made of a resin, and a resistor situated on one surface side of the substrate and formed of a film that includes Cr, CrN, and Cr2N. An elastic modulus of the substrate is greater than 9.8 GPa.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
A motor capable of improving motor performance is provided. A motor includes a rotor and a stator opposing the rotor. The rotor includes a magnet, a yoke in contact with the magnet, and a holder holding the magnet and the yoke. The yoke includes a first end part defined at one end in a circumferential direction and a second end part defined at another end in the circumferential direction. In a radial direction, an inner peripheral surface of the yoke opposes an outer peripheral surface of the holder via a first gap.
A motor (1) comprises: a magnet (12); one or a plurality of coils (14) facing the magnet (12) in a rotational axis direction (A); and a magnetic fluid (16). The magnet (12) is rotatably supported by the magnetic fluid (16) with respect to the coil (14). The magnet (12) preferably has an average crystal grain size in the range of 0.05 μm to 1.0 μm. In the rotational axis direction (A), the thickness of the magnet (12) is preferably 1.0 mm or less.
H02K 41/03 - Synchronous motorsMotors moving step by stepReluctance motors
H02K 21/24 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
A grasping device includes a conversion unit configured to convert rotational driving of a drive shaft into linear motion of a holding part. The conversion unit includes a cam formed with a cam groove recessed from one end surface toward the other end surface, and a bearing inserted into the cam groove. An end surface of the bearing is disposed apart from the one end surface on the other end surface side in an extending direction of the drive shaft.
An absolute encoder includes a first drive gear, a first magnet, a first angle sensor, an intermediate gear, a second drive gear, a layshaft gear, a second magnet, and a second angle sensor. A first magnetization direction of the first magnet is parallel to a first axial direction of the first angle sensor, and a second magnetization direction of the second magnet is perpendicular to a second axial direction of the second angle sensor, and the layshaft gear is disposed on an opposite side of the intermediate gear from a main spindle.
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
G01D 5/16 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
A motor of the present invention includes a rotation shaft, blades provided at the rotation shaft, a holder having tubular members, a rotor, and a stator opposing the rotor in a radial direction of the rotor. The stator is fixed to the tubular members, the stator includes a magnetic body, a coil and a resin member, a part of the resin member enters into between windings of the coil, another part of the resin member forms a side surface of the stator, and another part of the resin member opposes the blades in an axial direction of the rotation shaft.
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
A water pump (1), which is an example of a motor, comprises: a shaft (3); a cylinder (bearing) (7) rotatably supported by the shaft (3); an impeller (6) fixed to the cylinder (7); a rotor (5) fixed to the impeller (6); a stator (4) surrounding the rotor (5); and a space (2s1) between the shaft (3) and the cylinder (7). The cylinder (7) is provided with one end (71) and the other end (72) in the rotation axis direction. The inner surface (7f1) of the cylinder (7) is formed with one or a plurality of grooves (7G1) extending in the rotation axis direction of the cylinder (7). The grooves (7G1) extend continuously from the one end (71) of the cylinder (7) to the other end (72).
An abnormality determination model generation method includes: detecting a load of a subject(S) by load sensors (LS1, LS2, LS3, LS4) disposed at a bed (BD); creating teaching data, each of a plurality of types of feature amounts based on the detected load being associated with an abnormality state in the teaching data; creating a model for classifying a state of the subject as the abnormality state based on the plurality of types of feature amounts and determining at least one of the plurality of types of feature amounts as an explanatory variable based on the model, through supervised machine learning using the teaching data; and generating an abnormality determination model for determining the subject to be in the abnormality state based on the explanatory variable, through machine learning using the explanatory variable. The plurality of types of feature amounts include a frequency feature amount calculated by performing short-time Fourier transform on the load of the subject.
To more quickly detect a short circuit in a coil of a motor. In the motor drive control device, the control circuit includes a drive control signal generation unit configured to generate a drive control signal (Sd) so that a motor is in a drive state according to a drive command (Sc), a current limit value setting unit configured to set a current limit value (Ith), a current limit unit configured to instruct the drive control signal generation unit to stop excitation of a coil of the motor when a current flowing through the coil reaches the current limit value (Ith), a timer unit configured to measure an excitation time of the coil by a drive circuit, and a short-circuit determination unit configured to perform a short-circuit determination process of determining whether the coil is short-circuited, based on the time measured by the timer unit. When the time measured by the timer unit is less than a threshold value in the short-circuit determination process, the short-circuit determination unit determines the coil being short-circuited.
A rotating device includes a motor, gears, a first molded member formed of an elastic resin, a first non-molded member formed of an elastic resin, and a housing. The motor includes a rotation shaft and a frame. The housing includes a first inner surface in a rotation shaft direction of the motor. The frame includes a tube including two opening portions in the rotation shaft direction of the motor, and a first part covering one of the two opening portions. The first part of the frame connects to the first inner surface of the housing opposing the first part of the frame via the non-molded member in the rotation shaft direction of the motor. A part of the frame is supported by a portion of the housing via the first molded member.
The present invention relates to a method for recognizing an actuation of a closure element (10) of a motor vehicle. The method at least comprises a step of detecting an actuation force profile acting on the closure element (10), in particular a handle element (12) of the closure element (10). In addition, the method comprises a step of recognizing (22) an actuation event in dependency of the detected actuation force profile. In addition, the invention relates to a system for recognizing an actuation of a closure element (10) of a motor vehicle.
This angle sensor (1) comprises: a plurality of walls (11) extending in an axial line (x) direction; a plurality of spokes (12) connected to the plurality of walls (11); and a plurality of coils (20) wound around the plurality of spokes (12). The plurality of coils (20) face the plurality of walls (11) in the radial direction. The width (w11) of the wall (11) is equal to or greater than the width (w21) of the spoke (12) in the circumferential direction.
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
The present invention realizes a blower capable of preventing the rotation of an impeller from being impaired due to the existence of foreign matter and preventing deterioration of fan performance. A blower (100) of the present invention comprises: a casing (110) having an intake port (114) on one end side in an axial direction and an exhaust port (140x) on another end side in the axial direction; an impeller (130) disposed inside the casing (110) and having a plurality of blades (133); and a plurality of ribs (140) provided on an inner peripheral surface (113n) of the casing (110) to extend from the intake port side to the exhaust port side, and facing the blades (133). The number of blades (133) is less than the number of ribs (140), and the number of ribs (140) is a non-integral multiple of the number of blades (133).
A ball bearing (5) is a bearing that supports a shaft member (7) provided with a turbine blade (8) for receiving compressed air from an air supply port (9). The ball bearing (5) includes an inner ring (10), an outer ring (20), a plurality of rolling elements (30), and a retainer (31). The ball bearing (5) further includes an annular sealing member (40) provided around an axis (x) so as to be able to block the space between the inner ring (10) and the outer ring (20). The sealing member (40) has a support ring (42) for supporting the sealing member (40) on the outer peripheral side. A seal facing groove (11) that includes a seal contact surface (13), a recess (14), and a protrusion (12) is formed on an outer peripheral surface (10b) of the inner ring (10). The seal contact surface (13) allows for contact of an inner peripheral end (41a) of the sealing member (40) thereon from the outside in the axial (x) direction. The recess (14) extends in the axial (x) direction at least in a region facing the support ring (42) in the radial direction.
A strain gauge includes a substrate, a resistor formed on the substrate, and two lines. The resistor includes multiple elongated portions. Each of the lines includes a first metal layer and a second metal layer that is laminated on the first metal layer and is formed of a material having lower volume resistivity than the first metal layer. In plan view, an outer edge of the first metal layer is exposed from the second metal layer. In plan view, an end of the second metal layer on a first end side in a first direction protrudes further toward the first end side in the first direction than an end of a space that is situated between the first metal layer and an elongated portion adjacent to the first metal layer.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
A sensor module includes a substrate, a sensor chip mounted on one surface of the substrate to detect a predetermined axial displacement, a bonding wire that electrically couples a first electrode formed on the one surface of the substrate to a second electrode of the sensor chip, and a protective frame provided on the periphery of the one surface of the substrate. The protective frame is apart from the bonding wire.
G01L 1/18 - Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
A lighting device (1) according to an embodiment comprises a light source (4) and a lens (3). The lens (3) is disposed on the output side of the light source (4). An entry surface (3b) through which light from the light source (4) enters the lens (3) has an S-shaped cross section in a plane defined by two axes, one an exit direction of the light and the other a predetermined direction orthogonal to the exit direction.
The present pulse wave sensor includes a strain generating body including a plurality of slits each having an elongated shape and bending in a same direction, and a strain gauge provided on the strain generating body and including a Cr mixed phase film as a resistor. The plurality of slits are varied in a distance from a center of gravity of the strain generating body to one-side ends of the slits and in a distance from the center of gravity of the strain generating body to the other-side ends of the slits. The pulse wave sensor is configured to detect a pulse wave based on a change in a resistance value of the resistor in response to a deformation of the strain generating body.
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01L 9/16 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in the magnetic properties of material resulting from the application of stress
Provided is a detection device 1 comprising: a first transmission antenna 31 and a second transmission antenna 32 that transmit radio waves; and a first reception antenna 41 and a second reception antenna 42 that receive reflected waves generated by reflection of radio waves by an object. In plan view of a vehicle 10, a first virtual straight line L1 connecting the first transmission antenna 31 and the second transmission antenna 32 and a second virtual straight line L2 connecting the first reception antenna 41 and the second reception antenna 42 intersect, and the first virtual straight line L1 and/or the second virtual straight line L2 is arranged in a vehicle cabin 100 so as to be inclined at an angle less than 90 degrees with respect to a first direction X of the vehicle cabin 100. The detection device 1 uses the reflected waves to detect an in-vehicle living body H to be detected.
G01S 13/56 - Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H01F 7/20 - ElectromagnetsActuators including electromagnets without armatures
An actuator module (21) to be used in a lock system (100) comprises: a drive unit (215); a motive power transmission unit (216) that transmits motive power outputted from the drive unit, outputs the motive power as power for unlocking and locking a lock, and has plate-shaped rotating bodies (G21, G3, G4) that rotate about a rotation axis extending in a first direction; and at least one of a housing (211) and a circuit board (212), the housing accommodating at least a portion of the motive power transmission unit and having plate parts (211Sa, 211Sb) extending in a plane orthogonal to the first direction, and the circuit board (212) extending in a plane orthogonal to the first direction. At least two from among the plate-shaped rotating bodies (G21, G3, G4), the plate parts (211Sa, 211Sb) of the housing, and the circuit board (212) are located at the same position in the first direction.
An actuator module (21) for a lock system (100) attached to a door (1000) of a building comprises: a drive unit (215) that receives, from a battery (BT), supply of electric power for driving; a motive power transmission unit (216) that transmits motive power outputted from the drive unit and outputs motive power for releasing/securing a lock; and a controller (213) that determines the residual amount of the battery on the basis of the difference between a non-load-time voltage value, which is the value of an output voltage of the battery in a state where the drive unit is stopped, and a load-time voltage value, which is the value of an output voltage of the battery in a state where the drive unit is driven.
An actuator module (21) for a lock system (100) attached to a building door (1000) comprises: a drive unit (215); a power transmission unit (216) that transmits power output from the drive unit and outputs the power as power for unlocking and locking a lock (1000B, BM), the power transmission unit (216) having a lock interlocking unit (SS, G4, TL) that moves to an unlocking position in order to bring the lock into an unlocked state and moves to a locking position in order to bring the lock into a locked state; an ammeter (AM) that measures a drive current of the drive unit; a position sensor (PM) that detects the position of the lock interlocking unit; a storage unit (219); and a controller (213). The controller records, in the storage unit, an output of the position sensor when a measurement value of the ammeter has become equal to or greater than a threshold value as first information indicating the unlocking position or the locking position.
This information processing method involves causing a computer to execute processing in which the following are stored in a storage unit: a section of a primary shared piece obtained by dividing original information using a secret sharing scheme; and a section of a secondary shared piece obtained by further dividing, using a secret sharing scheme, a remaining section of the primary shared piece which is other than said section of the primary shared piece. The processing further includes: acquiring a remaining secondary shared piece, which is other than the section of the secondary shared piece, from an external storage device that stores the remaining secondary shared piece; and restoring the original information on the basis of the primary shared piece and the secondary shared piece stored in the storage unit and the secondary shared piece acquired from the external storage device.
G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
65.
INFORMATION PROCESSING METHOD, PROGRAM, AND INFORMATION PROCESSING DEVICE
In this information processing method, a computer executes processing for: dividing second original information, which is information obtained by updating original information which has been restored from split pieces divided via a secret splitting scheme, into primary split pieces and secondary split pieces obtained by further dividing some of the primary split pieces; storing some of the primary split pieces and some of the secondary split pieces in a storage unit; storing the remaining secondary split pieces other than those stored in the storage unit in an external storage device; and, when the external storage device is connected, acquiring the secondary split pieces from the external storage device, restoring the second original information on the basis of the primary split pieces and the secondary split pieces stored in the storage unit and the secondary split pieces acquired from the external storage device, and deleting the secondary split pieces stored on the external storage device.
G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
To provide a motor easily applied with frame ground in a simple configuration and capable of suppressing deformation of a connection terminal in contact with an external terminal connecting to an external device. A motor of the present application includes a metal member of a tubular shape having an opening portion and an inner peripheral surface forming the opening portion in an axial line x direction, a bracket including a tubular part disposed inside the opening portion, and a terminal provided at the bracket. The terminal includes a first portion connected to an external terminal connecting to an external device, and a second portion in contact with the metal member. The second portion is disposed between the inner peripheral surface of the metal member and an outer peripheral surface of the tubular part of the bracket.
A stator, a circuit board for supplying a current to the stator, a rotor rotating by the current supplied to the stator, a lead wire connecting an external power supply to the circuit board, and a first mold resin covering at least a portion of the stator, at least a portion of the circuit board, and a portion of the lead wire, and a second mold resin covering a predetermined range from the first mold resin of the lead wire led out from the first mold resin are provided. The second mold resin has the hardness lower than the hardness of the first mold resin.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
68.
GRIPPING DEVICE AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor, a detector configured to detect a position and a speed of a rotary shaft of the motor, a motor drive unit configured to supply power by which the motor is driven based on a current control value and to detect a magnitude of a current provided to the motor, a grasper configured to grip an object with a first finger and a second finger by changing a distance between the first finger and the second finger in accordance with rotation of the motor, a force detector configured to detect a grip force that enables the object to be gripped by the first finger and the second finger, and a controller configured to control the current control value such that a value of the detected grip force matches a force command value.
A motor (1) is provided with a rotor (30) including: a housing (31) having an opening (39); a yoke (32); and a plate (40) covering the opening (39) of the housing (31). The plate (40) includes one or a plurality of protrusions (47, 48) extending in the radial direction. In the rotational axis direction, the yoke (32) is supported by the housing (31). In the rotational axis direction, the protrusions (47, 48) contact the housing (31) and/or the yoke (32).
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
A power generation device (10) is provided with: a bracket (33); a crankshaft (4) accommodated in the bracket (33); one or a plurality of bearings (32) for rotatably supporting the crankshaft (4) with respect to the bracket (33); and a stator (34) supported by the bracket (33). A magnet (311) is fixed to the side surface of the crankshaft (4).
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
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
A vibration actuator according to the present invention includes: an electromagnet formed by laminating a flat annular coil on a plate surface of a plate-shaped magnetic core; a magnetic member having a lower surface facing the coil from above; a spacer disposed on the lower surface at the outside of the coil and separating the magnetic member and the electromagnet in a vertical direction; and an elastic support part disposed outside the coil and connecting the magnetic core and the spacer. As a result of a magnetic force being generated by energization of the coil, one of the magnetic member and the electromagnet is displaced so as to approach the other to vibrate.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/0354 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
72.
GRIPPING DEVICE AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor configured to rotate in accordance with an operational value, a grasper including a first finger and a second finger, a force detector configured to detect a grip force that enables an object to be gripped by the first finger and the second finger upon occurrence of a condition in which the object is gripped by the first finger and the second finger, and a controller that controls the operational value such that a magnitude of the grip force detected by the force detector matches a command value. The controller controls the grasper based on the command value as a reference command value. The controller changes the command value as the reference command value to an updated command value based on a change in the grip force that the force detector detects after the grasper grips the object.
A vibration actuator includes: a movable part that includes a coil, a core including both end portions protruding from the coil, and a weight fixed to the core, where the coil is wound around the core; a base part made of a magnetic body and includes yokes respectively facing the both end portions; at least one elastic part that supports the movable part in an elastically vibratable manner with respect to the base part; and a cover that accommodates the movable part and the at least one elastic part between the cover and the base part and forms a housing together with the base part. In the vibration actuator, a magnetic attraction force generated by energization of the coil displaces the movable part toward the base part to vibrate the movable part.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
H02K 11/33 - Drive circuits, e.g. power electronics
A door latch device (5) comprises: a latch mechanism (21) that includes a claw (21b) that is movable between an engagement position in which a state of engagement between a fork (21a) and a striker (3) is maintained, and an open position in which such engagement is released; an electric motor (22) that moves the claw (21b) to the open position; an open switch (91) that outputs an open signal indicating a user's intention to open a door; a key cylinder (31) that is rotationally operated by an inserted key (99); a lock switch (34) that outputs a lock signal in response to the rotational operation of the key cylinder (31) toward one side; and a control unit (40) that includes an electronic unlock state in which the electric motor (22) is caused to operate in response to reception of the open signal, and an electronic lock state in which the electric motor (22) is not caused to operate despite the reception of the open signal and the claw (21b) is maintained at the engagement position, and that switches the electronic unlock state to the electronic lock state in response to reception of the lock signal.
E05B 47/00 - Operating or controlling locks or other fastening devices by electric or magnetic means
E05B 77/44 - Burglar prevention, e.g. protecting against opening by unauthorised tools
E05B 81/14 - Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
75.
VIBRATION ACTUATOR AND VIBRATION PRESENTATION DEVICE
This vibration presentation device includes: a fixed part having a magnetic force generation portion in which a plate-shaped magnetic core is inserted into a coil to make both ends of the magnetic core protrude from the coil, and a base portion to which the magnetic force generation portion is fixed in a state in which both ends overlap with the upper surface; a movable part having a plate-shaped magnetic member opposing both ends from above in a surface orthogonal direction that is orthogonal to the upper surface, and a weight portion arranged on a lower surface of the magnetic member at a position avoiding the magnetic force generation portion; and an elastic body which is a frame-shaped body having a first opposing side and a second opposing side surrounding the movable part, connected to the movable part by a pair of first connection parts of the first opposing side, and connected to the fixed part by a pair of second connection parts of the second opposing side. The movable part is displaced and vibrated so as to be made to approach the fixed part by magnetic force generated by conduction to the coil.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
76.
CONTROL DEVICE, ELECTRIC-ASSIST BICYCLE, AND ASSIST CONTROL METHOD
Provided is a control device capable of preventing unnecessary assist actions, for example. For example, provided is a control device (1) that assists with rotating pedals (4) if a ratio (R) of the rotational speed (Vb) of wheels (2, 3) and the rotational speed (Vp) of the pedals (4) is within a prescribed range, and stops assisting with rotating the pedals (4) if the ratio (R) is outside of the prescribed range.
This vibration actuator comprises: a magnet; a core having a coil; a plate-shaped upper frame body; a plate-shaped lower frame body; and a plate-shaped elastic part which extends into a frame from an end part disposed at a position overlapping the upper frame body and the lower frame body in a plan view, and which holds either the magnet or the core so as to be able to vibrate in the frame. The end part is sandwiched between the upper frame body and the lower frame body such that the magnet and the core face each other in the frame.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
This magnetic encoder comprises an annular magnet having two end surfaces in an axial direction and an outer circumferential surface connected to the two end surfaces. The annular magnet includes magnetic particles, and a resin cured product of a thermosetting resin. The annular magnet includes 70-80 vol% of the magnetic particles and 20-30 vol% of the resin cured product. The magnetic particles have a particle size of 45-75 μm. The annular magnet has a porosity of 5 vol % or less.
G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/053 - Alloys characterised by their composition containing rare earth metals
This rotor comprises, for example: an annular part (163a); a plurality of magnetic pole pieces (163b, 263b, 363b, 463b); a plurality of connection parts (163c, 163d, 263c, 263d); and first magnets (161, 261, 361, 461) that are respectively disposed between two of the adjacent magnetic pole pieces (163b, 263b, 363b, 463b) in the circumferential direction. The first magnets (161, 261, 361, 461) have engaging sections (161e, 261e, 361e, 461ae, 461be). Engagement sections (163e, 263e, 363e, 464ae, 464be) are provided to the magnetic pole pieces (163b, 363b), the connection parts (263c, 263d), or a member (464) that is in contact with the first magnet (461) in the rotational axis direction.
A pump 1 has a vibration actuator 3 and pump units 4A, 4B. The vibration actuator 3 has: a base 51; a movable part 7 that has plate springs 72, 73 extending in the X-axis direction with one end connected to the base 51, a movable body 71 connected to the other end of the plate springs 72, 73, and a magnet 77 provided on the movable body 71; and a coil core part 8 that is provided on the base 51 and disposed facing the magnet 77 in the X-axis direction. The movable body 7 is displaced in the Y-axis direction while elastically deforming the plate springs 72, 73 due to an electromagnetic action between the magnet 77 and the coil core part 8. The pump units 4A, 4B have an airtight chamber 44, and a movable wall 45 that changes the volume of the airtight chamber 44 due to drive of the vibration actuator 3.
H02K 33/04 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
In the present invention, a rotating device (1) comprises a housing (B2), a motor (A3), a sensor (H7), a plate (F40), an external connection terminal (4), and another member (800). The housing (B2) has a first housing (B21) and a second housing (B22) that can be separated. The sensor (H7) has a terminal (H8). The plate (F40) is fixed to the housing (B2). The external connection terminal (4) is fixed to the plate (F40). The other member (800) electrically connects the terminal (H8) of the sensor (H7) and the external connection terminal (4). A portion of the external connection terminal (4) protruding from the plate (F40) and a terminal (H8) of the sensor (H7) face each other in the direction from the first housing (B21) toward the second housing (B22).
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
H02K 11/38 - Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
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
This vibration actuator includes: a housing; a first movable part that has a magnet part and is disposed in such a manner as to be capable of reciprocating in a vibration direction that is along the axial direction, such reciprocation being within the housing and via a first elastic support part joined to both ends of the magnet part, the ends being separated in the axial direction of the magnet part; and a second movable part that has a coil part disposed to surround the magnet part, and that is disposed so as to be capable of reciprocating along the vibration direction at the outer periphery of the first movable part such reciprocation being within the housing and via a second elastic support part joined to both ends of the coil part, the ends being separated in the axial direction of the coil part.
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
83.
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
The rotation speed of a motor is made to more reliably approach a target rotation speed. A motor drive control device includes: a drive circuit configured to apply an AC voltage converted by switching a DC voltage (VDD) to a coil of a motor based on a drive control signal (Sd) for controlling drive of the motor; and a control circuit configured to perform PWM control for generating a PWM signal as the drive control signal (Sd) in a manner that a rotation speed (Sr) of the motor matches a target rotation speed (Stg) and a sinusoidal current flows through the coil. The control circuit generates the PWM signal by increasing a modulation degree indicating a ratio of a command value of the AC voltage relative to the DC voltage (VDD) when the rotation speed (Sr) has not reached the target rotation speed (Stg).
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
A planar illumination device (1) according to an embodiment comprises a substrate (3), a reflector (5), and a condenser lens (6). A plurality of light sources (4) are two-dimensionally arranged on the substrate (3). The reflector (5) is disposed on the substrate (3) and has an inclined reflective surface (5a) that surrounds the emission side of each of the light sources (4). The condenser lens (6) is disposed on the emission side of the light sources (4) and the reflector (5), and condenses emitted light from the light sources (4). The full width at half maximum of the emitted light from the light source (4) is set to a value such that, at least in a predetermined direction, the emitted light within the full width at half maximum does not directly hit the reflector (5).
Provided is a durable torque sensor. A torque sensor (100, 200, 300, 400, 500, 600) comprises: a member (S) that is displaced in the axial direction; a strain-generating body (101, 201, 301, 401, 501, 601); and a housing (104) that accommodates the member (S) and the strain-generating body (101, 201, 301, 401, 501, 601). The strain-generating body (101, 201, 301, 401, 501, 601) is provided with a protrusion (111, 211, 311, 411) that protrudes in the axial direction. The protrusion (111, 211, 311, 411) faces an inner circumferential surface (104 ci) of the housing (104, 501, 601) in the radial direction.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
86.
MOTOR DRIVE CONTROL DEVICE AND MOTOR DRIVE CONTROL METHOD
To provide a motor drive control device and a motor drive control method capable of achieving high motor drive efficiency and suppressing the occurrence of vibration. A motor drive control device includes a control circuit unit configured to output a drive control signal (Sd) for PWM-driving a motor, and a motor drive unit configured to drive the motor based on the drive control signal (Sd). The control circuit unit adjusts a PWM frequency of the drive control signal (Sd) such that the PWM frequency is in a predetermined range and the number of PWM pulses per one cycle of an electrical angle of the motor is a desired value in a first rotation speed range of predetermined rotation speed ranges of the motor, and the PWM frequency is in the predetermined range in a rotation speed range other than the first rotation speed range.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
The application improves a design while controlling cost increase. In a vehicle cabin illuminating device, a first and second cabin LEDs are housed in a case. A panel of the case is provided with a cabin illuminator, and a light irradiated from the first and the second cabin LEDs passes through the cabin illuminator to illuminate inside a vehicle cabin. The panel is provided with a decorative illuminator having a decorative translucent portion that can transmit light, and the first lens housed in the case guides light from the first cabin LED to a back side of the decorative illuminator, and the second lens housed in the case guides light from the second cabin LED to the back side of the decorative illuminator. Thus, the decorative illuminator can be illuminated using the first and second cabin LEDs for illuminating inside the vehicle cabin, thereby decorating the vehicle cabin illuminating device.
B60Q 3/66 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for distributing light among several lighting devices
B60Q 3/70 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose
A door latch device (1) is provided with a device body (2) having a latch mechanism (11), an electric motor (12), a main frame (10), and an open lever (16). The open lever (16) is mechanically connected to the latch mechanism (11), and is capable of operating the latch mechanism (11) with a displacement of the open lever (16). A first operation force input mechanism (20A) or a second operation force input mechanism (20B) is selectively attached to the device body (2), in order to transmit an operation force, which is input by the user of a vehicle, to the open lever (16). The main frame (10) has both frame fixing parts (10a, 10b) for fixing a sub-frame (30) of the first operation force input mechanism (20A), and a through-hole (10c) for passing a cable (41) of the second operation force input mechanism (20B).
Provided is a motor capable of suppressing temperature rise in a bearing. The motor (1) comprises: a rotor (40) having a cylinder (12), a shaft (20), an annular space (CR) formed between the inner peripheral surface (13if) of the cylinder (12) and the outer peripheral surface (20op) of the shaft (20), a first bearing (21), a second bearing (22), a stator (30) fixed to the cylinder (12), an inner peripheral section (42a) fixed to the shaft (20) and equipped with a protrusion (42ap) facing the second bearing (22), an outer peripheral section (43) surrounding the stator (30), and a magnet (44) fixed to the outer peripheral section (43); and a substrate (15) fixed to a part of the cylinder (12) between the stator (30) and the first bearing (21) in the longitudinal direction of the shaft (20). The motor (1) additionally comprises a flow path (FP) in which a fluid flows between an inner ring (21in) of the first bearing (21) and a rolling element (21re), between the annular space (CR), an inner ring (22in) of the second bearing (22), and a rolling element (22re), and between the surface (42apf) of the protrusion (42ap) and the second bearing (22) in this order, then flows out to the exterior.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
H02K 11/30 - Structural association with control circuits or drive circuits
The planar illumination device includes a substrate including a plurality of light sources provided at one surface side, and a reflector disposed at the one surface side of the substrate and including a plurality of segments corresponding to the plurality of light sources, respectively, each of the segments being formed with a reflection surface surrounding each of the light sources. In an outer peripheral part segment disposed at an outer peripheral part of the reflector out of the plurality of segments, the reflection surface at an outer side and the reflection surface at an inner side are asymmetric.
A vibration actuator according to the present invention comprises a plate that is a magnetic body, an electromagnet that is provided on the plate and is formed by providing a coil to a center part of a core, and an elastic body that supports the core on both sides of the coil and is connected to the plate. Magnetic force generated by energization of the coil causes one of the coil or the plate to be displaced toward the other and vibrate.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
An angle sensor (1) comprises: a rotor (2) having a plurality of protrusions (11) extending in the radial direction; a base (3); and a coated conductor wire (4). The conductor wire (4) is provided on a structural surface (3a) of the base (3) and forms a planar shape having a plurality of undulations in the radial direction. The protrusions (11) face the conductive wire (4) in the axial (x) direction.
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
H02P 6/16 - Circuit arrangements for detecting position
Provided is a vibration actuator including: a movable body having a disk-like magnet, a pair of weight parts that are magnetic bodies fixed to both surfaces of the magnet in an axial direction, and a pair of spring connection parts that are provided at both ends in the axial direction; and a fixed body that has a case, and a cylindrical body that has an annular coil arranged on the outer periphery thereof and accommodates the movable body so as to be capable of reciprocating in the axial direction by a pair of elastic support parts that are separated in the axial direction and are respectively connected to the pair of spring connection parts. The case has a pair of bottomed cylindrical cases each having a case lid part at one end and a case opening part at the other end. The pair of bottomed cylindrical cases are respectively made to cover the cylindrical body from both sides in the axial direction, and the case opening parts of the pair of bottomed cylindrical cases are joined to each other to accommodate the cylindrical body. The pair of bottomed cylindrical cases are common members having the same shape.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, a plate displaceable with respect to the base, an elastic member supporting the plate with respect to the base. The base, the plate and the elastic member are arranged inside the housing. A magnetic gap is formed with the plate and the base. The plate connects with the contact member.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
96.
VIBRATION ACTUATOR AND VIBRATION PRESENTATION DEVICE
This vibration actuator comprises: a plate-shaped magnetic body; a plate-shaped electromagnet which is disposed so as to face the plate-shaped magnetic body and in which a coil is disposed at the center of a core; an elastic body that is a frame-shaped elastic body surrounding the plate-shaped magnetic body, supports the plate-shaped electromagnet on both sides of the coil, and is connected to the plate-shaped magnetic body; and a housing cover that covers the elastic body in the vibration direction and accommodates the elastic body together with the electromagnet. One among the electromagnet and the plate-shaped magnetic body is displaced by the magnetic force generated by the energization of the coil so as to approach the other inside the cover, and vibrates.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
97.
GRIPPING DEVICE, GRIPPING SYSTEM, AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor configured to rotate according to an operation value; a grasper including a first finger and a second finger, the grasper being configured to change a distance between the first finger and the second finger by using the motor, and to grip an object with the first finger and the second finger; a force detector configured to detect a gripping force by which the object is gripped with the first finger and the second finger, upon occurrence of a condition in which the object is gripped with the first finger and the second finger; and a controller configured to output the operation value such that a force detection value of the gripping force detected by the force detector matches a force command value. The controller is configured to detect a deviation of the object from a predetermined reference position based on a time period from a start of a gripping operation from a timing at which any one of the first finger and the second finger contacts the object.
A strain gauge according to the present disclosure includes: a resin substrate; a resistor formed of a film containing Cr, CrN, and Cr2N on one side of the substrate; and an inorganic insulating layer formed on another side of the substrate, and, in this strain gauge, the inorganic insulating layer is formed at least at a position overlapping a region where the resistor is formed in plan view.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
99.
MOTOR DRIVE CONTROL DEVICE AND INITIAL POSITION DETECTION METHOD FOR A ROTER
A control circuit that generates a drive control signal, an inverter circuit including a switch provided corresponding to the coil of each-phase of the motor, a driving circuit that rotates the rotor of the motor by alternately turning on/off the switch in accordance with the drive control signal, a shunt resistance provided between the inverter circuit and a ground, and a bidirectional current detection circuit that detects the current flowing through the shunt resistance in both directions are provided. The control circuit performs energization and interruption in the energization direction of the coil by sequentially switching the energization sectors without rotating the rotor of the motor, and estimates the position of the rotor based on the peak value of the energization current and the peak value of the kickback current due to the inductive kickback for each energization sector.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
Provided is a rotary machine capable of stably bringing a GND member attached to an end cap into contact with a housing. This rotary machine comprises: a motor; a housing 131 provided with a cylindrical part for accommodating the motor, the housing being composed of an electroconductive material; an end cap 160 arranged facing the inner peripheral surface of the cylindrical part; a circuit board 144 forming a GND circuit; and a terminal 200. A pin part 222 of the terminal 200 extends to one end side in the axial direction and is connected to the GND circuit. A second side plate part 230 of the terminal 200 extends to the other end side in the axial direction and is supported by an inner annular part 162 of the end cap 160. A contact piece 233 of the terminal 200 is arranged between the inner peripheral surface of the housing 131 and the inner annular part 162, thereby coming into contact with the housing 131.
