This motor control device, on the basis of the rotational speed of the motor, switches current detection methods between a first method and a second method that differ in how the duty ratio is adjusted. With the first method, for the PWM signal of each phase, the signal level varies over the entire period of a single cycle at arbitrary points in time that differ from each other, and the current of a current detector is detected over the entire period. With the second method, a single cycle of the PWM signal of each phase includes a first period and a second period, and for the PWM signal of each phase, the signal level varies at points in time that are according to an established duty ratio in the first period, while in the second period, the signal level varies at fixed points in time that differ from each other and the order in which the PWM signal of each phase is replaced is fixed regardless of the set value of the duty ratio, and the current of the current detector is detected during the second period.
H02P 23/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur spécialement adaptés pour amortir les oscillations des moteurs, p. ex. pour la réduction du pompage
A water pump (1), which is an example of a motor, is provided with: a shaft (3); a cylinder (7) rotatably supported by the shaft (3); an impeller (6) fixed to the cylinder (7); a rotor (5) including a magnet (52) fixed to the impeller (6); a stator (4) surrounding the rotor (5); a coil (42) wound around the stator (4); a magnetic body (8) disposed with a predetermined gap with respect to the magnet (52) in the axial direction (X-axis direction); a first space (2s1) formed between the shaft (3) and the cylinder (7); and a second space (2s2) in which the rotor (5) is accommodated. The coil (42) faces the magnet (52) in the radial direction. The first space (2s1) and the second space (2s2) are spaces into which liquid enters. The cylinder (7) is movable in the axial direction with respect to the shaft (3), and in the axial direction, the magnet (52) is disposed between the magnetic body (8) and the impeller (6).
F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
H02K 5/12 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction spécialement adaptées à un fonctionnement dans un liquide ou dans un gaz
H02K 7/14 - Association structurelle à des charges mécaniques, p. ex. à des machines-outils portatives ou des ventilateurs
An outer ring 100 is provided with a raceway groove 101 in which balls 130 roll, a peripheral groove 110 provided axially outside of the raceway groove 101, an outer shoulder part 114 that is provided axially outside of the peripheral groove 110 and protrudes toward an inner-ring 120 side, and an inner shoulder part 117 provided axially inside of the peripheral groove 110. A seal member 140 is provided with a first annular part 141 extending in the radial direction, a second annular part 145 that is disposed radially outside and axially inside of the first annular part 141 and extends in the radial direction, a connection part 144 that connects the first annular part 141 and the second annular part 145 to each other, and a distal-end part 146 extending outward in the axial direction from the radially outer edge part of the second annular part 145. The distal-end part 146 is elastically deformed inward in the radial direction by the outer shoulder part 114, whereby the second annular part 145 is pressed to the inner shoulder part 117.
F16C 33/78 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux avec diaphragme, disque ou bague, avec ou sans parties élastiques
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 33/58 - Chemins de roulementBagues de roulement
F16C 33/80 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux à labyrinthes
[Problem] To provide a rolling bearing capable of preventing a seal member from warping. [Solution] A ball bearing 1 comprises: an outer ring 100; an inner ring 120 disposed facing the outer ring 100; a plurality of balls 130 disposed between the outer ring 100 and the inner ring 120; and a resin seal member 140 attached to the outer ring 100 and covering a space between the outer ring and the inner ring. The outer ring 100 includes: a raceway groove 101 in which the balls 130 roll; a peripheral groove 110 provided axially outside the raceway groove 101; and a shoulder part 115 provided axially outside the peripheral groove 110 and projecting to the inner ring 120 side. The seal member 140 includes: a head part 146 engaging with the peripheral groove 110; and a step part 150 provided axially outside the head part 146 and closer to the inner ring 120 than the head part 146. The step part 150 includes a step surface 151 abutting on the shoulder part 115 in a radial direction.
F16C 33/78 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux avec diaphragme, disque ou bague, avec ou sans parties élastiques
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 33/58 - Chemins de roulementBagues de roulement
F16C 33/80 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux à labyrinthes
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
Ball screws, machine elements not for land vehicles; linear guides, machine elements not for land vehicles; shafts, axles or spindles, machine elements other than for land vehicles; bearings, machine elements not for land vehicles; shaft couplings, machine elements not for land vehicles; power transmissions and gearing, machine elements not for land vehicles; brakes, machine elements not for land vehicles; machine elements, not for land vehicles; metalworking machines and tools; loading-unloading machines and apparatus; chemical processing machines and apparatus; textile machines and apparatus; pulp making, papermaking or paper-working machines and apparatus; pneumatic or hydraulic machines and instruments; bushings [parts of machines]; guides for machines. Ball screws, machine elements for land vehicles; linear guides, machine elements for land vehicles; shafts, axles or spindles, machine elements for land vehicles; bearings, machine elements for land vehicles; shaft couplings, machine elements for land vehicles; steering units for land vehicles and their parts and fittings; power transmissions and gearing, machine elements for land vehicles; brakes, machine elements for land vehicles; mechanical elements for land vehicles.
A hard disk drive device includes: a base plate including a bottom surface part and a side wall part extending in a direction orthogonal to the bottom surface part along an edge part of an entire periphery of the bottom surface part; a structure provided more inside than the side wall part and including a female screw part; a cover having a plate shape, fixed to the base plate such that a back surface faces the bottom surface part, and including a through hole at a position facing the structure; a screw inserted into the through hole and including a male screw part fitted with the female screw part; and a first sealing member disposed at least one of between the structure and the cover and between the cover and the fastening body, and formed in an annular shape.
A planar illumination device (1) according to an embodiment comprises a baseboard (20) and a metal frame (10). In the baseboard (20), a plurality of light sources (21) are two-dimensionally arranged on a first surface (20a), and control circuits (23, 24) for controlling lighting of the light sources (21) are disposed on the first surface (20a) and/or a second surface (20b). The metal frame (10) supports the baseboard (20) and is electrically connected to a ground pattern formed on the baseboard (20).
The present invention increases the winding space of a coil and improves the output of a motor. This stator (200) comprises a magnetic body (210), an insulator (300), and a coil (400), wherein: the magnetic body (210) comprises a magnetic pole part (230), a ring (220), and a spoke (250) that connects the magnetic pole part (230) and the ring; the spoke (250) comprises a side part (253) and an end part (211a) in the X direction of a rotational axis; the insulator (300) comprises a plate (350) that covers the end part of the spoke (250); the width (w1) of the plate (350) is greater than the width (w2) of the spoke (250) in the circumferential direction; a conductive wire (401) of the coil (400) is wound around the spoke (250); the side part (253) of the spoke (250) faces the conductive wire (401); the end part (211a) of the spoke (250) is narrower than the width (w3) of another part (213a) of the spoke (250) in the circumferential direction; and the plate (350) is fitted to the end part (211a) of the spoke (250).
H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p. ex. isolement d'encoches
H02K 1/04 - Détails du circuit magnétique caractérisés par le matériau employé pour l'isolation du circuit magnétique ou de parties de celui-ci
The present invention achieves accurate positioning of an insulator relative to a stator core. This stator (200) comprises a magnetic body (210), an insulator (300), and a coil (400). The magnetic body comprises magnetic pole parts (230), a ring (220), and spokes (250). The spokes comprise a first end part (251), a second end part (252), and a side part (253) that is between the first end part and the second end part. The insulator comprises a first plate (310) that covers the first end parts and a second plate (360) that covers the second end parts. The width (w1) of the first plate and the width (w1) of the second plate are greater than the width (w2) of the spokes in the circumferential direction. A conductive wire (401) that forms the coil (400) is wound around the spokes. The side parts (253) of the spokes are opposite the conductive wire. The first plate (310) has first covering parts (335) that cover side surfaces of the magnetic pole parts in the radial direction, and the second plate (360) has second covering parts (395) that cover the side surfaces of the magnetic pole parts in the radial direction.
H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p. ex. isolement d'encoches
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 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement
F16C 19/52 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec dispositifs affectés par des conditions anormales ou indésirables
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 - Dispositions auxiliaires, p. ex. pour la commande de la pression ou pour la circulation des fluides
C10M 105/52 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant des halogènes contenant uniquement du carbone, de l'hydrogène et des halogènes
C10M 105/54 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant des halogènes contenant du carbone, de l'hydrogène, des halogènes et de l'oxygène
C10M 107/02 - Polymères d'hydrocarburesPolymères d'hydrocarbures modifiés par oxydation
C10M 115/08 - Compositions lubrifiantes caractérisées en ce que l'épaississant est un composé organique non macromoléculaire, autre qu'un acide carboxylique ou ses sels contenant de l'azote
C10M 119/22 - Compositions lubrifiantes caractérisées en ce que l'épaississant est un composé macromoléculaire contenant des halogènes
C10M 169/02 - Mélanges de matériaux de base et d'épaississants
F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes
F16C 33/66 - Pièces ou détails particuliers pour la lubrification
C10N 50/10 - Forme sous laquelle est appliqué le lubrifiant au matériau à lubrifier semi-solideForme sous laquelle est appliqué le lubrifiant au matériau à lubrifier huileuse
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 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H01F 1/057 - Alliages caractérisés par leur composition contenant des métaux des terres rares et des métaux de transition magnétiques, p. ex. SmCo5 et des éléments IIIa, p. ex. Nd2Fe14B
H01F 13/00 - Appareils ou procédés pour l'aimantation ou pour la désaimantation
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
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 - Joints universels dans lesquels la flexibilité est réalisée par pivots ou organes de liaisons coulissants ou roulants une des pièces d'accouplement pénétrant dans un manchon de l'autre pièce d'accouplement et reliée à celle-ci par des organes coulissants ou tournants les organes tournants étant des billes, des rouleaux ou des éléments analogues, guidés dans des gorges ou des logements dans chacune des parties de l'accouplement les organes roulants étant guidés dans des gorges ménagées dans chacune des parties de l'accouplement
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).
H02P 8/38 - Protection contre les défauts, p. ex. contre l'échauffement excessif ou le décrochageIndication des défauts le défaut consistant en un décrochage
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.
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 - Propriétés physiques particulières des constituants des compositions lubrifiantes
C10N 30/00 - Propriétés physiques ou chimiques particulières améliorées par l'additif caractérisant la composition lubrifiante, p. ex. additifs multifonctionnels
C10N 30/10 - Inhibition de l'oxydation, p. ex. anti-oxydants
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 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts dans lesquels la fréquence de fonctionnement est déterminée par la fréquence d'un courant alternatif appliqué en permanence avec des induits polarisés
B06B 1/04 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par électromagnétisme
H02K 33/00 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant
H02K 33/02 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts
H02K 33/04 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts dans lesquels la fréquence de fonctionnement est déterminée par la fréquence d'un courant alternatif appliqué en permanence
H02K 33/16 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits polarisés se déplaçant dans des directions opposées par inversion de la tension appliquée au système à une seule bobine
25.
ELECTRIC-ASSIST BICYCLE AND GEAR RATIO DETERMINATION METHOD FOR ELECTRIC-ASSIST BICYCLE
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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
G01B 7/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des 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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
G01B 7/30 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des axes
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.
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.
E05F 15/73 - Mécanismes pour battants mus par une force motrice avec déclenchement automatique sensible au déplacement ou à la présence de personnes ou d’objets
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 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p. ex. de l'eau ou des doigts
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 - Mesure des forces ou des contraintes, en général en mesurant les variations de la résistance ohmique des matériaux solides ou des fluides conducteurs de l'électricitéMesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c.-à-d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
37.
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 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
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 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des roulements à rouleaux, p. ex. des roulements à billes
H02K 7/08 - Association structurelle avec des paliers
H02K 21/22 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant autour des induits, p. ex. volants magnétiques
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 - Caractéristiques relatives à la lubrification ou au refroidissement
F16H 1/32 - Transmissions à engrenages pour transmettre un mouvement rotatif avec engrenages à mouvement orbital dans lesquels l'axe central de la transmission est situé à l'intérieur de la périphérie d'un engrenage orbital
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 - Aimants encastrés dans le noyau magnétique, p. ex. aimants permanents internes [IPM]
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 21/16 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits avec des noyaux d'induits annulaires à pôles saillants
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 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques durs métaux ou alliages sous forme de particules, p. ex. de poudre comprimées, frittées ou agglomérées
H01F 1/057 - Alliages caractérisés par leur composition contenant des métaux des terres rares et des métaux de transition magnétiques, p. ex. SmCo5 et des éléments IIIa, p. ex. 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 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques durs métaux ou alliages sous forme de particules, p. ex. de poudre comprimées, frittées ou agglomérées
H01F 1/057 - Alliages caractérisés par leur composition contenant des métaux des terres rares et des métaux de transition magnétiques, p. ex. SmCo5 et des éléments IIIa, p. ex. 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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant les caractéristiques d'impulsionsMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions utilisant un nombre variable d'impulsions dans un train
H01F 1/08 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques durs métaux ou alliages sous forme de particules, p. ex. de poudre comprimées, frittées ou agglomérées
H01F 1/053 - Alliages caractérisés par leur composition contenant des métaux des terres rares
45.
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 - Agencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par les aspects optiques utilisant des guides de lumière pour un seul dispositif d’éclairage
B60Q 3/74 - Agencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par leur objet pour l’éclairage général de l’habitacleAgencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par leur objet pour l’éclairage général de l’habitacle en combinaison avec un éclairage spécifique, p. ex. des lampes d’habitacle avec des lampes de lecture
B60Q 3/76 - Agencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par leur objet pour l’éclairage ponctuel, p. ex. lampes de lecture
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 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer les déformations dans un solide, p. ex. au moyen d'une jauge de contrainte à résistance
G01L 1/22 - Mesure des forces ou des contraintes, en général en mesurant les variations de la résistance ohmique des matériaux solides ou des fluides conducteurs de l'électricitéMesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c.-à-d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
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 - Moteurs synchronesMoteurs pas à pasMoteurs à réluctance
H02K 21/24 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants disposés axialement en face des induits, p. ex. dynamos de bicyclette du type moyeu
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 - Dispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques électriques ou magnétiques pour tester l'alignement des axes
G01D 5/14 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension
G01D 5/16 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier la résistance
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 - Dispositions de refroidissement ou de ventilation par un matériau solide conducteur de la chaleur s'encastrant dans, ou mis en contact avec, le stator ou le rotor, p. ex. des ponts de chaleur
H02K 9/06 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine comportant des moyens pour établir la circulation d'un agent de refroidissement avec des ventilateurs ou des dispositifs d'entraînement mûs par l'arbre de la machine
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.
E05B 81/76 - Détection du maniement de la poignéeDétection d’un utilisateur s'approchant d'une poignéeActions de commutation électrique effectuées par les poignées
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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant la valeur d'un courant ou d'une tension en faisant varier l'inductance, p. ex. une armature mobile
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 - Mesure des forces ou des contraintes, en général en mesurant les variations de la résistance ohmique des matériaux solides ou des fluides conducteurs de l'électricitéMesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c.-à-d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
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 - Mesure des forces ou des contraintes, en général en utilisant des propriétés des matériaux piézo-résistants, c.-à-d. des matériaux dont la résistance ohmique varie suivant les modifications de la grandeur ou de la direction de la force appliquée au matériau
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.
F21S 41/20 - Dispositifs d’éclairage spécialement adaptés à l’extérieur des véhicules, p. ex. phares caractérisés par des réfracteurs, des glaces de fermeture transparentes, des guides ou des filtres de lumière
F21S 41/143 - Diodes électroluminescentes [LED] la direction principale d’émission des LED étant parallèle à l’axe optique du dispositif d’éclairage
F21V 5/04 - Réfracteurs pour sources lumineuses de forme lenticulaire
F21V 5/08 - Réfracteurs pour sources lumineuses produisant une distribution de lumière asymétrique
F21W 102/20 - Distribution des niveaux d’éclairement dans la lumière émise
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 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
G01L 9/16 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent en faisant usage des variations dans les propriétés magnétiques du matériau, résultant de l'application de la contrainte
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 - Discrimination entre objets fixes et mobiles ou entre objets se déplaçant à différentes vitesses pour la détection de présence
G01V 3/12 - Prospection ou détection électrique ou magnétiqueMesure des caractéristiques du champ magnétique de la terre, p. ex. de la déclinaison ou de la déviation fonctionnant par ondes électromagnétiques
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 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts
H01F 7/20 - Électro-aimantsActionneurs comportant des électro-aimants sans armature
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 - Appareils ou méthodes au moyen desquels une suite donnée de signes, p. ex. un texte intelligible, est transformée en une suite de signes inintelligibles en transposant les signes ou groupes de signes ou en les remplaçant par d'autres suivant un système préétabli
74.
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 - Appareils ou méthodes au moyen desquels une suite donnée de signes, p. ex. un texte intelligible, est transformée en une suite de signes inintelligibles en transposant les signes ou groupes de signes ou en les remplaçant par d'autres suivant un système préétabli
75.
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.
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 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p. ex. de l'eau ou des doigts
H02K 7/14 - Association structurelle à des charges mécaniques, p. ex. à des machines-outils portatives ou des ventilateurs
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 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p. ex. de l'eau ou des doigts
H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p. ex. des croisillons
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 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant autour des induits, p. ex. volants magnétiques
H02K 21/14 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits
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 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par électromagnétisme
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
G06F 3/0354 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection des mouvements relatifs en deux dimensions [2D] entre le dispositif de pointage ou une partie agissante dudit dispositif, et un plan ou une surface, p. ex. souris 2D, boules traçantes, crayons ou palets
81.
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 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts
H02K 5/24 - EnveloppesEnceintesSupports spécialement adaptés pour la réduction ou à la suppression des bruits ou vibrations
H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
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 - Fonctionnement ou commande des serrures ou autres dispositifs d'immobilisation par des moyens électriques ou magnétiques
E05B 77/44 - Prévention contre l’effraction, p. ex. protection contre une ouverture par des outils non autorisés
E05B 81/14 - Serrures de véhicule actionnées par une force motrice caractérisées par la fonction ou les fins des éléments d’actionnement actionnant les cliquets du pêne, p. ex. pour déclencher le pêne
84.
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 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par électromagnétisme
H02K 33/02 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts
85.
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 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore utilisant l'énergie électrique fonctionnant par électromagnétisme
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
G06F 3/041 - Numériseurs, p. ex. pour des écrans ou des pavés tactiles, caractérisés par les moyens de transduction
H02K 33/16 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits polarisés se déplaçant dans des directions opposées par inversion de la tension appliquée au système à une seule bobine
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 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant les caractéristiques d'impulsionsMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions utilisant un nombre variable d'impulsions dans un train
H01F 1/08 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques durs métaux ou alliages sous forme de particules, p. ex. de poudre comprimées, frittées ou agglomérées
H01F 1/053 - Alliages caractérisés par leur composition contenant des métaux des terres rares
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.
F04B 43/04 - Pompes ayant un entraînement électrique
H02K 33/04 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des induits entraînés dans un sens par application d'énergie à un système à une seule bobine et ramenés par une force d'origine mécanique, p. ex. par des ressorts dans lesquels la fréquence de fonctionnement est déterminée par la fréquence d'un courant alternatif appliqué en permanence
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 - Dispositifs pour détecter la vitesse ou la position, ou actionnés par des valeurs de ces variables
H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages
H02K 11/38 - Circuits de commande ou d’entraînement associés à des moteurs à changement de vitesse du type roue à vis sans fin
H02K 13/00 - Association structurelle de collecteurs de courant et de moteurs ou de génératrices, p. ex. plaques de montage des balais ou connexions avec les enroulementsAgencement des collecteurs de courant dans les moteurs ou les génératricesDispositions pour améliorer la 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 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des systèmes de bobines se déplaçant, du fait de mises sous tension intermittentes ou inversées, par interaction avec un système de champ magnétique fixe, p. ex. des aimants permanents
92.
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 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
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 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication
95.
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 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
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 - Agencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par les aspects optiques utilisant des guides de lumière pour distribuer la lumière entre plusieurs dispositifs d’éclairage
B60Q 3/70 - Agencement des dispositifs d’éclairage pour l’intérieur des véhiculesDispositifs d’éclairage spécialement adaptés à l’intérieur des véhicules caractérisés par leur objet
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 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des roulements à rouleaux, p. ex. des roulements à billes
H02K 9/02 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine
H02K 11/30 - Association structurelle à des circuits de commande ou à des circuits d’entraînement
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.
