A motor includes a rotor, a stator, and a flow pipe. The rotor is rotatable about a central axis extending in an axial direction. The stator includes an annular stator core surrounding the central axis. A fluid can flow through the flow pipe. The stator further includes coils located on the stator core. The flow pipe includes a connection pipes extending in the axial direction and arranged in a circumferential direction. Each of the connection pipes is located radially inward with respect to the coils and is in direct or indirect contact with the stator core.
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
B64D 33/08 - Aménagement sur les aéronefs des éléments ou des auxiliaires des ensembles fonctionnels de propulsion, non prévu ailleurs des systèmes de refroidissement des ensembles fonctionnels de propulsion
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 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile
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
2.
STATOR, METHOD FOR MANUFACTURING STATOR, ROTATING ELECTRICAL MACHINE, AND METHOD FOR MANUFACTURING ROTATING ELECTRICAL MACHINE
A stator according to one embodiment of the present invention includes a stator core and coil blocks. The stator core includes: an annular yoke section centered on the central axis; and a plurality of teeth sections protruding in the axial direction or the radial direction from one surface of the yoke section and arranged in the circumferential direction. The coil blocks are positioned in a plurality of slots arranged in the circumferential direction between teeth sections adjacent to each other in the circumferential direction among the plurality of teeth sections. Each coil block includes: a coil in which a conducting wire is wound in an annular shape; and a resin layer in which resin is integrally molded with the coil. The resin layer is disposed at least on the inner peripheral side of the coil.
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
A motor according to one embodiment of the present disclosure comprises a rotor and a stator. The rotor rotates around a center axis. The stator is opposite the rotor in the axial direction. This rotor comprises a rotor frame, a rotor cover, and a plurality of magnets. The rotor cover is opposite the rotor frame in the axial direction. The plurality of magnets are arranged along the circumferential direction between the rotor frame and the rotor cover.
H02K 1/2796 - Rotors faisant face axialement à des stators le rotor étant formé de plusieurs aimants disposés sur la circonférence dans lesquels les deux faces axiales du rotor font face à un stator
4.
MOTOR, METHOD FOR ADJUSTING MOTOR GAP, AND METHOD FOR PRODUCING MOTOR
A motor according to one aspect of the present invention comprises: a rotor that is rotatable about a center axis; a first stator that is positioned to one axial side of the rotor and that is opposite from the rotor in the axial direction; a first gap maintaining member that is positioned to said one axial side of the rotor; a first movement mechanism that is linked to the first gap maintaining member; and a housing that supports the rotor, the first stator, the first gap maintaining member, and the first movement mechanism. The first gap maintaining member has a first opposing surface that is opposite from the rotor in the axial direction. The first movement mechanism causes the first gap maintaining member to move in the axial direction such that the first opposing surface contacts the rotor.
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
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 15/40 - Assemblage de machines dynamo-électriques
H02K 16/04 - Machines avec un rotor et deux stators
This impeller comprises a hub rotatable about a central axis, and blades connected to a radially outer edge of the hub and extending radially outward. Protrusions projecting forward in the rotational direction and recesses extending rearward in the rotational direction are alternately arranged in a radial direction on at least a portion of a front edge of each blade in the rotational direction. The protrusions each have a first end at a radially outer portion, and a second end at a radially inner portion. When viewed in an axial direction, at least a portion of each of the first end and the second end of each protrusion includes an overhanging portion extending toward a recess beyond a straight line connecting a first point and a second point defined on the protrusion, the first point being located forward in the rotational direction and the second point being located rearward in the rotational direction relative to the first point.
One embodiment of the motor according to the present invention comprises: a rotor that can rotate around the central axis; an annular stator that is positioned on one side of the rotor in the axial direction and surrounds the central axis; a housing to which the stator is fixed; and a resin portion in which at least a part of the stator is embedded. The stator has: a first core member having a plurality of tooth portions that extend in the axial direction and are disposed at intervals in the circumferential direction; and a plurality of coils respectively attached to the plurality of tooth portions. The resin portion connects the housing and the stator. The housing has a core support portion positioned on one side of the stator in the axial direction. The first core member is fixed to the core support portion by a plurality of screw members arranged at intervals around the central axis.
One aspect of the present disclosure is a rotor that rotates around a center axis. The rotor comprises an expanding material, a plurality of magnets, and a rotor core. The plurality of magnets are arranged along the circumferential direction. The rotor core holds the plurality of magnets. The rotor core has wall parts that extend along the radial direction and are positioned between adjacent pairs of magnets. The expanding material is positioned between the wall parts of the rotor core and the magnets.
A system and method for compensating for an electromechanical angle oscillation that occurs during a start-up of a sensorless permanent magnet motor drive. An actual motor output power of a permanent magnet motor is measured, and an ideal motor output power of the motor is determined. The ideal output power may be based on a mechanical speed, a current command, and a torque constant. The actual output power may be based on a converter loss, a copper loss, and a direct current input power. An oscillation compensation angle is determined based on the measured actual output power and the determined ideal output power. The determined oscillation compensation angle is added to a reference angle to produce a final angle, and the final angle is used to control operation of the permanent magnet motor drive as it supplies power to the motor, including compensating for the electromechanical angle oscillation.
This axial gap motor manufacturing method includes: a rotor holding step for holding a rotor in a state where a first stator is spaced with respect to the rotor by a first holding distance at one position in an axial direction by a rod-shaped positioning member passing through a first through-hole penetrating a first housing from the outside to the inside and a second stator is spaced with respect to the rotor by a second holding distance at the other position in the axial direction by a rod-shaped pressing member passing through a second through-hole penetrating a second housing from the outside to the inside; and a target distance adjustment step for narrowing the distance of the first stator with respect to the rotor from the first holding distance to a target distance and narrowing the distance of the second stator with respect to the rotor from the second holding distance to the target distance while holding the rotor by the positioning member and the pressing member.
H02K 15/40 - Assemblage de machines dynamo-électriques
H02K 16/04 - Machines avec un rotor et deux stators
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 stator according to the present invention includes: a stator core that has an annular core back part that is centered on an axis, a plurality of tooth parts that are arranged in the circumferential direction on one surface of the core back part so as to protrude in the axial direction, and a plurality of slots that are arranged in the circumferential direction between tooth parts that are adjacent in the circumferential direction; and a coil that is positioned in the plurality of slots. The stator core includes steel sheets that are stacked in the radial direction. The core back part has a plurality of grooves that are recessed in the axial direction and extend from the inside in the radial direction to the outside in the radial direction of the core back part. When the stator core is viewed in the axial direction, center lines of the slots and center lines of the grooves are parallel.
A stator according to one embodiment of the present disclosure has a stator core, a housing, a bus bar, a resin part, and an expansion member. In the stator core, a plurality of coils are disposed along the circumferential direction around the central axis. The housing accommodates the stator core. The bus bar has: a coil connection part that is disposed along the inner circumferential surface of the stator core and is connected to the plurality of coils; and an external connection part that extends from the coil connection part toward the outer circumferential part of the housing. The resin part covers the stator core and the bus bar in the housing. The outer circumferential part of the housing has an opening. The external connection part is disposed in the opening. The expansion member is disposed at least partially between the housing and the external connection part.
H02K 3/50 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
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
12.
ROTATING ELECTRIC MACHINE AND METHOD FOR MANUFACTURING ROTATING ELECTRIC MACHINE
The rotating electric machine according to one aspect of an embodiment comprises a rotor, a stator, and a housing. The rotor is rotatable about the central axis. The stator is disposed facing the rotor. The rotor and the stator are disposed inside the housing. The stator has a stator core, a coil, and a resin layer. The stator core has: an annular yoke portion centered on the central axis; and a plurality of tooth portions that protrude from one surface of the yoke portion in the axial direction and are configured side by side in the circumferential direction. The coil is formed by winding a conductive wire in an annular shape and is positioned in a plurality of slots which are arranged in the circumferential direction between tooth portions adjacent to each other in the circumferential direction among the plurality of tooth portions. The resin layer is disposed on at least a part of the surface where the stator and the rotor face each other.
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 15/121 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines des noyaux
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
13.
STATOR, MOTOR, AND METHOD FOR MANUFACTURING STATOR
This stator includes a stator core that has a plurality of teeth portions and is configured such that a plurality of slots are arranged in the circumferential direction between the teeth portions adjacent to each other in the circumferential direction among the plurality of teeth portions, a plurality of coils located in the plurality of slots, and a bus bar that electrically connects the coils of the same phase among the plurality of coils, wherein: each of the plurality of coils includes an annular portion around which a conductive wire is wound, and a pair of lead portions that are located at the outermost periphery of the annular portion, are located at different circumferential positions with respect to the annular portion in the coils adjacent to each other in the circumferential direction, and extend to the outside of the slots toward the bus bar; the coils adjacent to each other in the circumferential direction among the plurality of coils are electrically connected to constitute a coil group; and in the coil groups, the coils adjacent to each other in the circumferential direction are joined to each other at the lead portions, and the lead portions located at the circumferential ends in the coils located at both ends in the circumferential direction are electrically connected to the bus bar.
A flow path adjustment mechanism of a fluid delivery device is able to adjust a flow area of a fluid flowing by driving of a driver. The flow path adjustment mechanism includes a shielding assembly to adjust shielding and opening of at least a portion of a flow surface of a flow path as viewed from a flow direction of the fluid based on a detection result of at least one of a driving state of the driver and a state of the fluid in the flow path through which the fluid flows. The fluid delivery device includes the flow path adjustment mechanism and a flow device. The flow device causes the fluid to flow by driving the driver.
In an in-vehicle lens comprising a transparent base member mainly composed of a resin, a hard coat layer and an antireflection layer are provided on at least one surface of the base member, the antireflection layer is provided on a side opposite to the base member with respect to the hard coat layer, a region from a lens effective diameter to an edge portion in the base member is defined as an extra-effective-diameter region, and in the extra-effective-diameter region, the antireflection layer is covered by a functional film that absorbs ultraviolet rays. Also provided are a lens unit having the in-vehicle lens and a camera module having the lens unit.
A control method according to one aspect of the present disclosure includes, for a motor drive device provided with a first motor for driving a first slide shaft, a second motor for driving a second slide shaft, a first motor control unit for controlling the first motor on the basis of a first parameter, and a second motor control unit for controlling the second motor on the basis of a second parameter: a generation step for generating a first parameter and a second parameter on the basis of prescribed initial conditions; a setting step for having the first motor control unit and the second motor control unit each hold the generated first parameter and the second parameter, respectively; a tuning step for operating the first motor and the second motor; a first update step for updating the held first parameter on the basis of results of the tuning step; and a second update step for having the second motor control unit hold and update a parameter that is an adjusted version of the updated first parameter.
G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction
G05B 11/36 - Commandes automatiques électriques avec les dispositions nécessaires pour obtenir des caractéristiques particulières, p. ex. proportionnelles, intégrales, différentielles
H02P 5/46 - Dispositions spécialement adaptées à la régulation ou la commande de la vitesse ou du couple d’au moins deux moteurs électriques pour la régulation de vitesse de plusieurs moteurs dynamo-électriques en relation les uns avec les autres
A blower device includes a fan and a housing. The fan includes an impeller that is rotatable about a center axis. The housing accommodates the fan. The housing includes a tubular wall that extends along a center axis and covers the impeller from a radially outer side. The impeller includes a plurality of blades arranged in a circumferential direction. A cutting mark is provided on at least a portion of an inner circumferential surface of the tubular wall radially facing the blades or radially outer end portions of the blades.
A rotating electric machine according to the present invention comprises: a rotor that can rotate about a central axis; a stator that is disposed radially inward of the rotor; a heat dissipation part that is disposed on one axial-direction side with respect to the rotor and the stator; and a heat transfer member that extends in the axial direction and connects the stator and the heat dissipation part. The stator has a stator core surrounding the central axis. The stator core is provided with a hole section recessed toward the other axial-direction side. A portion of the heat transfer member is positioned in the hole section.
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
19.
METHOD OF MANUFACTURING ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE
A method of manufacturing a rotary electric machine includes: assembling, to a rotor core extending in an axial direction with a central axis as the center, a plurality of first magnets arranged in a circumferential direction, a plurality of second magnets arranged in the circumferential direction on one side in the axial direction with respect to the first magnets, and a shim made of a non-magnetic material and located between the first magnets and the second magnets; and fixing the first magnets and the second magnets to the rotor core. The magnetization directions of the first magnet and the second magnet are radial directions and are opposite to each other. The magnet fixing is performed in a state where the first magnets and the second magnets are brought into contact with opposite surfaces of the shim respectively by attracting each other with their magnetic force.
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
20.
FAILURE DETECTION DEVICE FOR MOTOR AND FAILURE DETECTION METHOD FOR MOTOR
A failure detection device for a motor according to one aspect of the present disclosure includes: an axial misalignment detection unit that, based on signals of a plurality of magnetic sensors from a sensor unit including the magnetic sensors that are disposed along a circumference and detect magnetism from a magnet rotating with a rotary shaft of a motor, detects axial misalignment that is misalignment between a center of a circle passing through the magnetic sensors and the rotary shaft; and a failure detection unit that detects a failure in the motor based on the detected axial misalignment.
G01B 7/31 - 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 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
A technique capable of stably operating a system including a plurality of motors is provided. A system includes motors, an impeller attached to an output shaft of each of the motors, and a communication unit and a drive unit corresponding to each of the motors. The communication unit transmits first information indicating the imbalance amount of a first impeller to another communication unit. The first impeller is an impeller corresponding to the communication unit. The communication unit receives second information indicating the imbalance amount of a second impeller from the other communication unit. The second impeller is an impeller corresponding to the other communication unit. The drive unit rotates the motor corresponding to the drive unit at a rotation speed based on the second information received by the communication unit corresponding to the drive unit.
A stably operable system is provided. A system includes motors, and a detection unit, a communication unit, and a drive unit corresponding to each of the motors. The detection unit detects the state of the own motor. The own motor is one of the motors corresponding to the detection unit. The communication unit transmits the state of the own motor to another communication unit, and receives the state of the other motor from the other communication unit. The other motor is one of the motors corresponding to the other communication unit. The drive unit rotates the own motor at a rotation speed based on the state of the other motor received by the communication unit corresponding to the drive unit.
H02P 5/74 - Dispositions spécialement adaptées à la régulation ou la commande de la vitesse ou du couple d’au moins deux moteurs électriques pour commander au moins deux moteurs dynamo-électriques à courant alternatif
H02P 23/14 - Estimation ou adaptation des paramètres des moteurs, p. ex. constante de temps du rotor, flux, vitesse, courant ou tension
The present disclosure includes a rotor that is rotatable about a central axis, a stator that includes a stator core facing the rotor in a radial direction with a gap therebetween, and a guide member that is disposed on one side of the stator core in the axial direction and supplies a refrigerant in a circumferential direction. The stator core is provided with a plurality of stator flow paths that penetrate the stator core in an axial direction and through which the refrigerant flows. The plurality of stator flow paths are disposed at different positions in the circumferential direction. The guide member includes a connection flow path portion that connects the plurality of stator flow paths, and is configured with a plurality of flow path members stacked in the axial direction.
A rotor according to the present invention comprises: a rotor core which has a cylindrical core body that extends in an axial direction so as to be centered upon a central axis and a plurality of projecting parts that project outward in the radial direction from a radially outward facing surface of the core body and that are arranged at intervals from one another along a circumferential direction; a plurality of conductor parts which are arranged between the projecting parts arranged adjacently to each other in the circumferential direction; and a pair of end rings which are arranged on one side in the axial direction with respect to the rotor core and on the other side in the axial direction with respect to the rotor core, respectively, and which connect the plurality of conductor parts. Each of the plurality of projecting parts has: a toothed part that projects outward in the radial direction from the radially outward facing surface of the core body; and a plurality of projections that project from the toothed part to one side in the circumferential direction and the other side in the circumferential direction, respectively. In the radial direction, the dimension of the toothed part in a direction orthogonal to the radial direction is constant.
An impeller includes a body portion to rotate about a center axis extending in an axial direction, and blades that protrude in a radial direction from an outer circumferential surface of the body portion and are located at intervals in a circumferential direction. The impeller generates wind in the axial direction. In at least one cross section of at least one of the blades, including the center axis and extending in the radial direction, a width in the axial direction increases and then decreases from radially inner to radially outer. When one side in the axial direction is defined as an intake side, an edge on the one side in the axial direction in the cross section has a convex shape in the axial direction. The cross section intersects a radially inner edge of the at least one of the blades when viewed in the axial direction.
A method for manufacturing a steel product according to one embodiment of the present disclosure includes: a first heat treatment step for heating, at a first temperature, an object that is formed of a steel material and has an uneven part; a second heat treatment step for heating, after the first heat treatment step, the object at a second temperature that is lower than the first temperature; and a laser irradiation step for irradiating, after the second heat treatment step, at least a part of the uneven part of the object with laser light. The steel material contains, in mass%, 0.40-1.00% of C, 0.10-2.00% of Si, 0.10-1.00% of Mn, 0.030% or less of P, 0.030% or less of S, 1.10-3.20% of Cr, 0.010-0.10% of Al, and 0.15-0.50% of V, and additionally contains at least one of 2.50% or less of Ni and 1.00% or less of Mo, while having a (C + V) content of 0.60% or more in terms of mass%, with the balance being made up of Fe and unavoidable impurities.
C21D 9/32 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour roues d'engrenage, roues hélicoïdales, ou équivalent
C21D 1/09 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages
A cooling plate according to one embodiment comprises a housing and a coolant. A space is formed inside the housing. The coolant is disposed in the space. The housing has a first base material¸ a flat second base material, and a joint part. The second base material is joined to the first base material. The joint part joins the first base material and the second base material. The joint part includes a sealing material which is impregnated from a side surface outside the space in which the coolant is disposed to the inside of the side surface, in a direction parallel to a main surface of the second base material.
A cooling device according to one aspect of the present disclosure comprises a cooling member and a thermal diffusion device. The thermal diffusion device is a separate member from the cooling member. The cooling member has an inflow port and an outflow port for a refrigerant, and a first container that connects the inflow port and the outflow port. The thermal diffusion device has a working fluid and a second container in which the working fluid is disposed. The second container has a flat plate part extending in the horizontal direction, and a cylinder part extending from the flat plate part. The first container has a recessed part recessed in the outer surface, and at least a portion of the cylinder part is arranged in the recessed part.
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p. ex. tubes caloporteurs
A cooling system according to one aspect of an embodiment of the present invention includes a regulating valve. The regulating valve is provided, in a circulation flow path in which a refrigerant circulates between a cooling plate attached to a device to be cooled and a refrigerant circulation device, in a return path of the refrigerant in which the refrigerant flows from the cooling plate toward the refrigerant circulation device, and adjusts the flow rate of the refrigerant. The regulating valve includes a movable plug and a shape memory alloy member. The movable plug adjusts the flow rate of the refrigerant flowing through the return path. When the temperature of the refrigerant in the return path rises, the shape memory alloy member has a shape for moving the movable plug to a position where the flow rate of the refrigerant is increased, and, when the temperature of the refrigerant returns to the temperature before the rise, the shape memory alloy member has a shape for returning the movable plug to the position before the flow rate of the refrigerant is increased.
F16K 31/70 - Moyens de fonctionnementDispositifs de retour à la position de repos sensibles aux variations de température actionnés mécaniquement, p. ex. par un ruban bimétallique
A cooling module includes a manifold including a distribution manifold and a collection manifold. The distribution manifold includes a connection port of each of a plurality of joints connected to an inflow port of a refrigerant in a plurality of cooling units. The collection manifold includes a connection port of each of a plurality of joints connected to an outflow port of the refrigerant in the plurality of cooling units. The distribution manifold and the collection manifold are fixed to each other by a fixing portion.
An electric conversion system (1) comprises an electric converter (2), with three phase modules (22), each connected to two input nodes (211, 212) in direct current, and to a single, respective output node (213) in three-phase alternating current. Each phase module (22) comprises controllable switches (23) and a flying capacitor (223). A control system (3) sends logical control signals to the switches (23), generated for the phase modules (22) as a function of three phase modulating signals (Vm). The phase modulating signals (Vm) are generated using a DPWM technique, adding, to three sinusoidal phase signals (Vsin), a homopolar signal, generated so that, in different intervals, a phase modulating signal (Vm) is saturated at a higher or lower end value. In each interval, the modulating signal to be saturated (Vf) is selected in such a way as to minimize a combination of the circulating currents () in the flying capacitors (223) of the three phase modules (22).
H02M 1/084 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques utilisant un circuit de commande commun à plusieurs phases d'un système polyphasé
H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
H02M 7/44 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques
A refrigerant circulation device includes a primary pipe, a secondary pipe, a primary filter, a secondary filter, and a housing. A primary refrigerant flows through the primary pipe. A secondary refrigerant flows through the secondary pipe. The primary filter is connected to the primary pipe. The secondary filter is connected to the secondary pipe. The housing accommodates the primary pipe, the secondary pipe, the primary filter, and the secondary filter. The primary filter and the secondary filter each include a brush and a handle. The brush is located inside the primary filter and the secondary filter. The handle drives the brush. The handle is located at a position opposing the first side surface of the housing.
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur
A refrigerant circulation device according to an embodiment comprises a primary pipe, a secondary pipe, a heat exchanger, a pump, and a housing. A primary refrigerant flows through the primary pipe. A secondary refrigerant flows through the secondary pipe. The heat exchanger exchanges heat between the primary refrigerant and the secondary refrigerant. The pump circulates the secondary refrigerant. The housing accommodates the primary pipe, the secondary pipe, the heat exchanger, and the pump. The primary pipe and the secondary pipe are located on the back side in the housing.
A refrigerant circulation device according to one aspect of an embodiment of the present invention comprises primary piping, secondary piping, a primary filter, a secondary filter, a heat exchanger, a pump, and a housing. A primary refrigerant flows through the primary piping. A secondary refrigerant flows through the secondary piping. The primary filter is connected to the primary piping. The secondary filter is connected to the secondary piping. The heat exchanger exchanges heat between the primary refrigerant and the secondary refrigerant. The pump circulates the secondary refrigerant. The housing houses the primary piping, the secondary piping, the primary filter, the secondary filter, the heat exchanger, and the pump. The primary filter, the secondary filter, the heat exchanger, and the pump are located on the front side in the interior of the housing.
A refrigerant circulation device according to an embodiment comprises a primary pipe, a secondary pipe, a primary filter, a secondary filter, and a housing. A primary refrigerant flows through the primary pipe. A secondary refrigerant flows through the secondary pipe. The primary filter is connected to the primary pipe. The secondary filter is connected to the secondary pipe. The housing accommodates the primary pipe, the secondary pipe, the primary filter and the secondary filter. Each of the primary filter and the secondary filter comprises a brush and a handle. The brush is disposed inside the primary filter and the secondary filter. The handle drives the brush. The handle is disposed at a position facing a first side surface of the housing.
This filter is disposed in piping through which a refrigerant flows, and comprises a casing, a filter unit, and a filter cleaning unit. The casing has: an inflow port which is connected to the piping and into which the refrigerant flows; and an outflow port which is connected to the piping and out from which the refrigerant flows. The filter unit is disposed inside the casing and removes foreign matter from the refrigerant as a result of the refrigerant flowing in from the inflow port passing therethrough. The filter cleaning unit is at least partially disposed inside the casing and is attachable to and detachable from the casing. When the filter unit is cleaned, the filter cleaning unit is attached to the casing and jets a portion of the refrigerant toward the filter unit from a direction opposite to the direction in which the refrigerant passes.
This refrigerant circulating device is provided with a secondary pipe, a housing, a charging tank, a charging pump, a first connection pipe, a first liquid supply port, and a second liquid supply port. A secondary refrigerant flows through the secondary pipe. The housing accommodates the secondary pipe. The charging tank stores a refrigerant for charging into the secondary pipe. The charging pump is connected to the charging tank and the secondary pipe and pressure-feeds the refrigerant stored in the charging tank toward the secondary pipe. The first connection pipe extends from the charging pump, and the refrigerant from the charging tank flows therethrough. The first liquid supply port is a refrigerant supply port toward the secondary pipe, and the first connection pipe is detachably connected thereto. The second liquid supply port is a refrigerant supply port toward the charging tank, and the first connection pipe is detachably connected thereto. The first connection pipe can be selectively connected to either the first liquid supply port or the second liquid supply port.
This refrigerant circulation device comprises piping, a filter, and a housing. A refrigerant flows through the piping. The filter is connected to the piping and removes foreign matter from the refrigerant flowing through the piping. The housing accommodates the piping and the filter. The filter is disposed facing a first side surface of the housing, has a flow path for the refrigerant from a second side surface opposite to the first side surface toward the first side surface, and is disposed in an orientation inclined diagonally downward toward the first side surface.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Apparatus and instruments for transforming electricity; electrical energy control devices; Apparatus and instruments for switching electricity; Transformers [electricity]
A cold plate according to one aspect of the present disclosure comprises a first plate and a second plate. The first plate is formed from metal and has a first surface, a second surface positioned opposite to the first surface, and a plurality of fins arranged on the second surface. The second plate is formed from metal and has a third surface facing the second surface, and a fourth surface positioned opposite to the third surface. The second surface has a first region where the plurality of fins are arranged, a second region located outside the first region, and a third region located between the first region and the second region. The first plate is joined with the second plate by laser welding in the second region. In addition, the thickness of at least a part of the first plate in the third region is greater than the thickness of the first plate in the second region.
H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
An electric conversion system comprises an electric converter, with three phase modules, each connected to two input nodes in direct current, and to a single, respective output node in three-phase alternating current. Each phase module comprises controllable switches and a flying capacitor. A control system sends logical control signals to the switches, generated for the phase modules as a function of three phase modulating signals. The phase modulating signals are generated using a DPWM technique, adding, to three sinusoidal phase signals, a homopolar signal, generated so that, in different intervals, a phase modulating signal is saturated at a higher or lower end value. In each interval, the modulating signal to be saturated is selected in such a way as to minimize a combination of the circulating currents in the flying capacitors of the three phase modules.
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 1/00 - Détails d'appareils pour transformation
H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
A cold plate according to one aspect of the present disclosure comprises a first plate, a second plate, an inlet and an outlet for a refrigerant, and a joint. The first plate is formed from metal and has a first surface, a second surface positioned opposite from the first surface, and a plurality of fins arranged on the second surface. The second plate is formed from metal and has a third surface facing the second surface, and a fourth surface positioned opposite from the third surface. The inlet and the outlet extend completely through the second plate from the third surface to the fourth surface. The joint is connected to the inlet and the outlet and projects outward from the fourth surface. In addition, the joint is joined to the second plate by localized heating joining, and a first joint part formed by the localized heating joining extends from the third surface toward the joint.
H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
A cold plate according to one aspect of the present disclosure is provided with a first plate made of metal, a second plate made of metal, and an intermediate member. The second plate is bonded to the first plate to form an internal space between the first plate and the second plate. The intermediate member is located in the internal space. The second plate is bonded to the first plate by local heat bonding, and a bonding part by the local heat bonding is formed at least at the boundary between the first plate and the second plate.
An air blowing device includes a motor in a through-hole portion of a housing, and an impeller inside the through-hole portion of the housing and rotated by the motor to generate airflow. The housing includes stationary vanes protruding inward from an inner wall of the through-hole portion of a main body portion. An outer surface of the main body portion includes a lead wire accommodation groove having a recessed shape extending in an axial direction. The stationary vanes are arranged in a circumferential direction. A stationary vane adjacent to the lead wire accommodation groove in the circumferential direction opposes a base portion in a radial direction with a space interposed therebetween, and remaining stationary vanes are coupled to the base portion.
An electrostatic actuator according to an embodiment of the present invention comprises first to third electrodes, and a plurality of first bag parts and second bag parts. The first electrode is band-shaped. The first bag parts are positioned on a first surface of the first electrode. The first electrode is arranged in the longitudinal direction of the first electrode. Dielectric liquid is sealed on the first electrode. The second bag parts are positioned on a second surface positioned opposite to the first surface of the first electrode. The second bag parts are arranged in the longitudinal direction of the first electrode. The dielectric liquid is sealed in the second bag parts. The second electrode is positioned on the side opposite to the first electrode across the first bag parts. The third electrode is positioned on the side opposite to the first electrode across the second bag parts. The first electrode, the second electrode, and the third electrode have flexibility. The first bag parts each overlap a boundary portion between adjacent second bag parts in a plan transparent view. The second bag parts each overlap a boundary portion between adjacent first bag parts in a plan transparent view.
F15B 15/02 - Schéma mécanique de montage caractérisé par les moyens transformant le mouvement de l'élément entraîné par le fluide en mouvement de l'organe terminal qui est actionné
B25J 15/12 - Têtes de préhension avec des éléments en forme de doigts avec des éléments en forme de doigts flexibles
47.
COOLING PLATE AND METHOD FOR MANUFACTURING COOLING PLATE
A cooling plate according to one aspect of an embodiment of the present invention comprises a housing and a refrigerant. The housing has a space formed therein. The refrigerant is arranged in the space. The housing comprises a flat plate-shaped first base material, a flat plate-shaped second base material, and a frame member. The second base material is disposed so as to face the first base material. The frame member connects the first base material and the second base material. The frame member has an annular shape when viewed in plan. The frame member includes, in a direction from one of the first base material and the second base material toward the other of the base materials, a thick-walled part and a thin-walled part that have different widths for separating the inside and the outside of the space. The frame member has a width that decreases from the thick part toward the thin part. The thin part is located at a connection part between members located on both sides of the thin part.
F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p. ex. tubes caloporteurs
This motor comprises: a hollow fixed shaft that is centered on a central axis and that extends in the axial direction; a stator that is fixed on the outer peripheral surface of the fixed shaft; a rotor that is positioned radially outward of the stator and that rotates about the central axis; and a plurality of bearings that are fixed on the outer peripheral surface of the fixed shaft and that rotatably support the rotor. The stator has an annular stator core, the inner peripheral surface of which contacts the outer peripheral surface of the fixed shaft, and a coil which is wound on the stator core. The coil has a first-side coil end part that protrudes to one axial side of the stator core. The plurality of bearings include a first-side bearing that is positioned on said one axial side with respect to the stator core. In a view from said one axial side, at least part of the first-side bearing is positioned so as to overlap the first-side coil end part in the axial direction.
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 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
A cold plate according to one aspect of the present disclosure comprises a first plate and a second plate. The first plate is formed from metal and has a first surface, a second surface positioned opposite from the first surface, and a plurality of fins arranged on the second surface. The second plate is formed from metal and has a third surface facing the second surface, and a fourth surface positioned opposite from the third surface. The second plate also has a first region facing the plurality of fins, and a second region positioned outside the first region. The first plate and the second plate are bonded to each other in the second region through irradiation with laser light. In addition, there are a first melted part and a second melted part that are melted through irradiation with laser light. The first melted part extends from the first surface of the first plate toward the second plate in the second region. The second melted part extends from the fourth surface of the second plate toward the first plate in the second region.
This rotor has: a rotor core that has a cylindrical rotor yoke extending in the axial direction; and a plurality of magnets that are positioned in a predetermined order in the circumferential direction in a Halbach array on a first surface that is one of the inner peripheral surface and outer peripheral surface of the rotor yoke. The plurality of magnets are each rectangular when viewed in the axial direction and include: a plurality of main magnets magnetized in the radial direction; and a plurality of auxiliary magnets magnetized in the circumferential direction. The rotor core has a protrusion protruding in the radial direction. The protrusion is positioned between a pair of magnets in which at least one of the pair of magnets adjacent to each other in the circumferential direction is the auxiliary magnet, and is in contact with the pair of magnets in the circumferential direction.
This stator includes: a stator core having an annular core back part centered on an axis and a plurality of teeth extending radially from the core back part; an electrically insulating insulator having tooth tip covering parts covering tip sections of the teeth and a tooth body covering part covering the remainder of the teeth other than the tip sections; and a coil wound on the tooth body covering part of the insulator. The tooth tip covering parts have circumferential end covering sections covering circumferential end sections of the stator core at the tip sections of the teeth and tip surface covering sections covering at least portions of tip surfaces at the tip sections of the teeth. The radial thickness of the stator core at the circumferential end covering sections is larger than the radial thickness of the tip surface covering sections.
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 1/16 - Noyaux statoriques à encoches pour enroulements
A drive device according to one aspect of the present invention comprises a motor having a rotor capable of rotating about a central axis line and a stator surrounding the rotor from the radially outer side, and a housing that houses the motor. The stator has a stator core and a coil mounted on the stator core. The stator core has a cylinder part with a cylindrical shape surrounding the central axis line, and a plurality of protrusions protruding radially outward from the outer peripheral surface of the cylinder part. Each protrusion is provided with a through-hole that extends completely therethrough in the axial direction and into which a bolt is inserted. The housing has a fixing part to which the stator is fixed. The fixing part is provided with: a fixing surface that comes into contact with a surface of each protrusion facing one side in the axial direction; a hole that opens at the fixing surface and into which a bolt is inserted; and a flow path inside a pedestal that is connected to the hole.
One aspect of a drive device according to the present invention comprises a motor. An in-core flow path is provided inside a stator core of the motor. The in-core flow path has a circumferential flow path that extends along the circumferential direction, and a plurality of axial flow paths that extend along the axial direction. The stator core has a plurality of plates that are stacked in the axial direction. Openings that penetrate in the axial direction are provided in at least a portion of the plurality of plates. The plurality of plates overlap in the axial direction, whereby the openings each constitute a portion of the in-core flow path. The plurality of plates include a first plate and a second plate that are adjacent in the axial direction. In the first plate, a first opening is provided as the opening, and in the second plate, a second opening is provided as the opening. The circumferential flow path includes: a first flow path section that is provided inside the first opening; a second flow path section that is provided inside the second opening; and a connection flow path section that is provided in a portion in which one circumferential end of the first opening and the other circumferential end of the second opening overlap in the axial direction.
A cooling device includes a cover, first and second elbows, and first and second flow path pipes. The cover includes first and second openings through which a coolant circulates in a first surface. The first and second elbows are on the first surface and connected to the first and second openings. The first and second flow path pipe are on the first surface and connected to the first and second elbows. When viewed from a direction orthogonal or substantially orthogonal to the first surface, the first flow path pipe linearly extends in a direction inclined with respect to a flow path direction of the second elbow at a position adjacent to the second elbow, or the second flow path pipe is bent in a direction away from the first elbow at a position adjacent to the first elbow.
This motor has a stator having an annular stator core having a plurality of slots arranged in a circumferential direction, a plurality of coils inserted into the plurality of slots, and a plurality of plate-like bus bars connected to the plurality of coils. The plurality of bus bars each have a bus bar body part extending along the circumferential direction, and a bus bar connection part that extends from the bus bar body part toward a first direction, which is one side in a normal direction with respect to each of the circumferential direction and a plate thickness direction of the bus bar. The plurality of coils are formed by winding rectangular wiring around the stator core, and have a coil end part disposed separated from the bus bar body part in the first direction. The bus bar connection part has: a support part that comes into contact with a portion of the coil end part in a second direction opposite to the first direction and defines the position of the coil end part in a central axis direction; and a first surface contact part and a second surface contact part that make surface-to-surface contact with a first surface, which is one surface of the coil end part in the plate thickness direction, and a second surface, which is the surface on the other side.
A cold plate according to one aspect of the present disclosure comprises a first plate and a second plate. The first plate is formed of metal and includes: a first surface; a second surface located opposite the first surface; and a plurality of fins formed on the second surface. The second plate is formed of metal and includes: a third surface facing the second surface; and a fourth surface located opposite the third surface. The second plate includes: a first region facing the plurality of fins; and a second region located outside the first region. In the second region, the second plate is joined to the first plate by laser welding. The thickness of the second region of the second plate is smaller than the thickness of the first region of the second plate. A melted part melted by the laser welding extends from the fourth surface of the second plate to the first plate beyond a joint surface between the first plate and the second plate.
A cold plate according to one aspect of the present disclosure comprises a first plate and a second plate. The first plate is formed of metal and has a first surface, a second surface positioned opposite to the first surface, and a plurality of fins formed on the second surface. The second plate is formed of metal and has a third surface facing the second surface and a fourth surface positioned opposite to the third surface. The second plate: has a first region facing the plurality of fins, and a second region positioned outside the first region; and is joined to the first plate in the second region. The top of at least one of the plurality of fins is joined to the second plate by laser welding.
A cold plate according to one aspect of the present disclosure comprises a base part and a cover part. A plurality of fins are disposed on the base part. The cover part covers the plurality of fins. The base part is joined to the cover part outside a region in which the plurality of fins are disposed. The plurality of fins include a plurality of brazed fins, the tip ends of which are joined to the cover part by a brazing material. The interval between tip ends of the plurality of brazed fins is greater than the interval between the base ends of the plurality of fins.
H01L 23/473 - Dispositions pour le refroidissement, le chauffage, la ventilation ou la compensation de la température impliquant le transfert de chaleur par des fluides en circulation par une circulation de liquides
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
A coolant distribution unit includes a heat exchanger, a housing, a primary flow path, and a secondary flow path. The housing accommodates the heat exchanger. Through the primary flow path, a primary coolant flows from an inlet of the primary coolant in the housing to an outlet of the primary coolant in the housing via the heat exchanger. Through the secondary flow path, a secondary coolant flows from an inlet of the secondary coolant in the housing to an outlet of the secondary coolant in the housing via the heat exchanger. Each of the side surfaces of the heat exchanger on one side in a first direction and on the other side in the first direction includes at least one of an inflow portion of the primary coolant, an outflow portion of the primary coolant, an inflow portion of the secondary coolant, or an outflow portion of the secondary coolant.
F28F 27/02 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur pour commander la répartition des sources de potentiel calorifique entre des canaux différents
A motor includes a rotor, a first stator, and a second stator in an axial direction, first and second bus bars connected to the first and second stators, respectively, first and second connector portions fixed to the first and second bus bars, respectively, a housing, a first cable connected to the first connector portion, and a second cable connected to the second connector portion. The housing includes a first hole portion extending from the first connector portion toward one side in the axial direction, and a second hole portion extending from the second connector portion toward one side in the axial direction. The first cable is connected to the first connector portion from one side in the axial direction through the first hole portion. The second cable is connected to the second connector portion from one side in the axial direction through the second hole portion.
This fluid dynamic pressure bearing comprises a shaft, a sleeve, and a lubricant. An upper outer-peripheral surface and/or an upper inner-peripheral surface has an upper dynamic pressure fluid dynamic pressure bearing comprising upper dynamic pressure grooves that induce a fluid dynamic pressure in the lubricant during rotation. In a first upper dynamic pressure groove row, a plurality of upper dynamic pressure grooves, which are inclined to one side in a circumferential direction while proceeding upward in an axial direction, are arranged in the circumferential direction. A second upper dynamic pressure groove row is disposed adjacent to the first upper dynamic pressure groove row on the lower side in the axial direction, and a plurality of upper dynamic pressure grooves, which are inclined to the other side in the circumferential direction while proceeding upward in the axial direction, are arranged in the circumferential direction. A third upper dynamic pressure groove row is disposed adjacent to the second upper dynamic pressure groove row on the lower side in the axial direction, and a plurality of upper dynamic pressure grooves, which are inclined to the one side in the circumferential direction while proceeding upward in the axial direction, are arranged in the circumferential direction.
A power conversion device according to the present invention comprises: a power module that performs power conversion; a capacitor module that is disposed closer to one side in a first direction than the power module and is electrically connected to the power module; and a housing that accommodates the power module and the capacitor module. The capacitor module has a plurality of capacitor substrates on which capacitors are mounted and which have plate surfaces facing the first direction. Each of the plurality of capacitor substrates is disposed so as to be aligned in the first direction.
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
68.
MOTOR POWER MODULE CLAMPING ARRANGEMENT, SYSTEM AND METHOD FOR MAINTAINING SPACING BETWEEN MOTOR BOARD AND INTERCHANGEABLE POWER MODULES, AND MOTOR CONTROLLER POTTING SHIELD
A motor includes a controller can including a heatsink, a controller including an electronics board and a potting shield, a heat-generating component mounted to the electronics board, and a clamping assembly. The clamping assembly includes an insert disposed between the electronics board and the heat-generating component and a fixation element extending through the insert and securing the heat-generating component in thermal communication with the heatsink. The heat¬ generating component may be interchangeable with other components, and the insert may be interchangeable with other variable thickness inserts. The thickness of each insert corresponds to the thickness of a respective one of the interchangeable heat-generating components to facilitate positioning of the component relative to the heatsink. The controller can and the potting shield at least in part define a controller chamber including a primary chamber portion and a secondary chamber portion. The potting shield is disposed between the primary and secondary chamber portions.
H02K 11/30 - Association structurelle à des circuits de commande ou à des circuits d’entraînement
H02K 5/18 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des nervures ou des ailettes pour améliorer la transmission de la chaleur
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
A cooling assembly includes multiple coolant distributors and a control device. The coolant distributors each include a pump, a pressure sensor, and a flow rate sensor. The pump delivers a coolant. The pressure sensor detects a pressure of the coolant. The flow rate sensor detects a flow rate of the coolant. The control device includes a controller. The controller is communicably connected to the multiple coolant distributors, and is configured or programmed to control operation of the multiple coolant distributors in accordance with at least one of detection results of the pressure sensors and detection results of the flow rate sensors which are received from the multiple coolant distributors.
A motor includes a heatsink, an electronics board, a heat-generating component mounted to the electronics board, and a clamping assembly. The clamping assembly includes an insert and a fixation element. The insert is at least in part disposed between the electronics board and the heat-generating component. The insert defines a fixation element-receiving opening. The fixation element is at least in part received in the fixation element-receiving opening, such that the insert at least in part positions and supports the fixation element. The fixation element secures the heat-generating component relative to the heatsink such that the heat-generating component is secured in thermal communication with the heatsink.
A motor includes a controller can, a controller, and potting material encasing at least a portion of the controller. The controller includes a primary electronics board, a plurality of primary electronics components mounted to the primary electronics board, a plurality of secondary electronics components, and a potting shield. The controller can and the potting shield at least in part define a controller chamber including a primary chamber portion and a secondary chamber portion. The primary electronics components are at least substantially located in the primary chamber portion. The secondary electronics components are at least substantially located in the secondary chamber portion. The potting shield is disposed between the primary and secondary chamber portions.
H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
H02K 11/00 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection
H02K 11/02 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour la suppression des parasites d’origine électromagnétique
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
72.
SYSTEM AND METHOD FOR MAINTAINING SPACING BETWEEN MOTOR BOARD AND INTERCHANGEABLE POWER MODULES
A motor includes a heatsink, an electronics board, an interchangeable heat-generating component mounted to the electronics board, and an interchangeable spacing insert at least in part disposed between the electronics board and the interchangeable heat-generating component. The electronics board presents a board surface facing the heatsink. The interchangeable heat-generating component presents a heatsink-facing surface and a board-facing surface. The board-facing surface is spaced from the board surface by an offset distance. The interchangeable spacing insert engages each of the board surface and the board-facing surface to maintain the offset distance therebetween and position the heatsink-facing surface relative to the heat sink. The interchangeable spacing insert is selected from a group of spacing inserts having various thicknesses, with the spacing insert thickness corresponding to the thickness of the interchangeable heat-generating component and facilitating positioning of the interchangeable heat-generating component relative to the heatsink.
H02K 5/18 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des nervures ou des ailettes pour améliorer la transmission de la chaleur
H02K 5/22 - Parties auxiliaires des enveloppes non couvertes par les groupes , p. ex. façonnées pour former des boîtes à connexions ou à bornes
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
A motor according to one aspect of the present disclosure comprises: a rotor having a plurality of magnets arranged along a circumferential direction; a stator in which a plurality of coils having respective end parts of a winding start and a winding end are arranged along the circumferential direction, and which faces the rotor in an axial direction; a circuit board having a drive circuit; and a guide member which guides at least a part of the end parts of the plurality of coils to the circuit board. The guide member has: an introduction part into which the end parts of the coils are introduced; a groove part through which the end parts are inserted, and which guides the end parts from the introduction part to the circuit board; and an introduction part which is formed by removing a part of a wall part on one side among wall parts constituting the groove part, and which introduces the end parts of the coils into the groove part.
A cooling device includes a cold plate, fins, a first flow path, and a second flow path. The cold plate is movable into thermal contact with a heat source. The fins are on one main surface of two main surfaces of the cold plate and are arranged at intervals in the first direction. The first flow path is on one side of the plurality of fins on the one main surface in a second direction intersecting a first direction, and communicates with an inlet of the refrigerant. The second flow path is on another side of the plurality of fins on the one main surface in the second direction, and communicates with an outlet of the refrigerant. At least portions of the plurality of the fins overlap the first flow path or the second flow path in a plan view.
A motor controller includes: an inverter circuit including an upper arm and a lower arm for each of three phases; a conduction controller controlling conduction of the upper and lower arms of each of the three phases; and a determination unit determining switching from (i) a two-phase modulation method in which two of the three phases are PWM-controlled and the remaining one phase is a fixed phase in which any one of the upper and lower arms is always turned on to (ii) a 120-degree energization method in which two of the three phases are energization phases and the remaining one phase is a non-energization phase. The conduction controller includes a switching compensation unit causing the upper and lower arms in each of the two energization phases to be identical in an ON-OFF state before and after switching from the two-phase modulation method to the 120-degree energization method.
H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
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
76.
CONTROL DEVICE, MOTOR DEVICE, ELECTRIC POWER STEERING DEVICE, CONTROL METHOD, AND PROGRAM
A model following controller is configured or programmed such that a transfer function of a control target is constrained to a transfer function of a nominal model in a frequency band in which a complementary sensitivity gain, which is a gain in a gain characteristic of a complementary sensitivity function with respect to a modeling error between the control target and the nominal model, is 1 or substantially 1. An input torque in a state where a first correction torque and a second correction torque are subtracted is input to the control target. A gain of a transfer function of a corrector in a first frequency band equal to or lower than a predetermined frequency is larger than a gain of the transfer function of the corrector in a second frequency band higher than the predetermined frequency.
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
B62D 6/00 - Dispositions pour la commande automatique de la direction en fonction des conditions de conduite, qui sont détectées et pour lesquelles une réaction est appliquée, p. ex. circuits de commande
77.
CONTROL DEVICE, MOTOR DEVICE, ELECTRIC POWER STEERING DEVICE, CONTROL METHOD, AND PROGRAM
A control device includes a first assist controller configured or programmed to perform lane keeping control and generate a first input value, a second assist controller configured or programmed to generate a second input value based on a steering input value, and a disturbance sensitivity controller configured or programmed to which a command value calculated based on the first input value and the second input value is input. The first assist controller is configured or programmed to include a generator configured or programmed to generate a first input value based on a target value of an output of a decelerator. A second output value indicating the output of the decelerator is fed back to the generator. The generator is configured or programmed to include a compensator configured or programmed to perform phase delay compensation processing on a phase delay generated in the fed back second output value.
B62D 15/02 - Indicateurs de direction ou aides de direction
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
78.
CONTROL DEVICE, MOTOR DEVICE, ELECTRIC POWER STEERING DEVICE, CONTROL METHOD, AND PROGRAM
A control device includes an assist controller configured or programmed to generate an input torque input to a control target based on a torsion bar torque, a model following controller configured or programmed to generate a correction torque to correct the input torque based on a nominal model, a vibration torque generator configured or programmed to generate a vibration torque, and a gain adjuster configured or programmed to adjust a vibration torque gain to be multiplied by the vibration torque. The vibration torque multiplied by the vibration torque gain is added to the input torque. The model following controller is configured or programmed to calculate an estimated value of a self-aligning torque to be applied to the control target, and generate a correction torque based on the estimated value. The gain adjuster is configured or programmed to increase the vibration torque gain as the estimated value increases.
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
This motor comprises a stator core and coils of a plurality of phases. The coils of the plurality of phases have a coil end part and a coil linear part for each phase. The coil end part has a plurality of substrates which are laminated in the axial direction. The plurality of substrates each have: a plurality of through holes which pass through that substrate in the axial direction; a plurality of connection parts which are respectively constituted by conductive members positioned respectively in the plurality of through holes, and to which are connected end parts of a plurality of pin parts of a coil linear part of one phase among the coil linear parts of each phase inserted in the through holes; and a connection pattern part which electrically connects a pair of connection parts among the plurality of connection parts.
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements avant leur montage dans les machines
80.
STATOR, MOTOR, AND METHOD FOR MANUFACTURING STATOR
This stator has: a stator core in which a plurality of slots arranged in the circumferential direction are formed; an insulating member disposed on the inner surfaces of the plurality of slots; and a coil part disposed inside the insulating member in the plurality of slots. The insulating member has: a base material layer extending along the outer circumference of the coil part as viewed in the axial direction; and a foam layer positioned on one surface of the base material layer in the thickness direction in a state of being expanded by heating. The base material layer has a pair of protrusions that respectively protrude, in the axial direction of the stator core, from slot openings that respectively open in one axial direction and the other axial direction of the slots. The foam layer is positioned on one surface in the thickness direction of at least a part of each of the pair of protrusions. The thickness of a part of the insulating member where the foam layer is positioned in each of the protruding portions is larger than the distance between the inner surfaces of the slots in the slot openings and the outer surface of the coil part.
H02K 3/30 - Enroulements caractérisés par leur matériau d'isolement
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 15/12 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines
81.
CONTROL DEVICE, MOTOR DEVICE, ELECTRIC POWER STEERING DEVICE, CONTROL METHOD, AND PROGRAM
A control device includes a model following controller configured or programmed to generate a correction torque to correct an input torque to be input to a control target based on a nominal model based on a configuration of the control target, and a calculator configured or programmed to calculate an input value to be input to the model following controller. The calculator is configured or programmed to execute first calculation processing to calculate the input value. In the first calculation processing, the calculator is configured or programmed to calculate the input value based on a first output value acquired based on a first sensor and indicating an output of the motor and a second output value acquired based on a second sensor and indicating an output of a decelerator.
B62D 6/00 - Dispositions pour la commande automatique de la direction en fonction des conditions de conduite, qui sont détectées et pour lesquelles une réaction est appliquée, p. ex. circuits de commande
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
B62D 15/02 - Indicateurs de direction ou aides de direction
This motor has a stator core and a multi-phase coil. The coils of the respective phases each have: a plurality of pin parts that penetrate the inside of the slot in the axial direction, and that are flat conductive wires having end parts that protrude axially outward from one axial-direction end surface of the stator core; and a plurality of connection members that electrically interconnect the end parts of a pair of the pin parts in the coils of the same phase among the plurality of pin parts. The connection member has a connection portion electrically connected in the circumferential direction or the radial direction to the end parts of the pair of pin parts in the coils of the same phase, and at least a part of the connection portion of the connection member is located at a position from the one end surface of the stator core to one end in the axial direction at the end parts of the pin parts in the axial direction.
This device for manufacturing a laminated iron core comprises a heating device for heating a strip-shaped iron core piece formation member, and a winding and stacking device for stacking the strip-shaped iron core piece formation member while winding same in a helical shape. The winding and stacking device comprises: a cylindrical winding unit to which the iron core piece formation member in the heated state is supplied; a bending unit for bending the iron core piece formation member supplied to the winding unit into an arcuate shape along an outer peripheral surface of the winding unit as seen from the axial direction; a cooling unit for cooling the iron core piece formation member bent into the arcuate shape; an adhesive supply unit for supplying an adhesive onto one surface and/or another surface in the thickness direction of the iron core piece formation member bent into the arcuate shape; and a rotation drive unit for winding the iron core piece formation member in a helical shape onto the outer peripheral surface of the winding unit by causing the winding unit to rotate about a central axis.
A symmetrically performing motor includes an asymmetrical rotor. The rotor includes a core and a plurality of arcuately arranged magnets. The core includes a hub, a plurality of pole segments, and a plurality of bridges extending between and interconnecting respective ones of the pole segments to the hub. Each of the bridges has an axially varying width. The pole segments are swept in form such that the rotor core exhibits mirror asymmetry. Each of the pole segments includes a body, a head disposed radially adjacent the body, and a pair of arcuately spaced apart ears extending generally tangentially outwardly from the head. The head defines an arcuate outer head face extending along an outer rotor margin. Each of the ears defines a respective outer ear face disposed inward of the outer rotor margin. Each of the outer ear faces defines an ear angle relative to the outer rotor margin.
H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/274 - Rotors internes l'axe de magnétisation des aimants étant perpendiculaire à l’axe du rotor le rotor étant formé de plusieurs aimants disposés sur la circonférence
National University Corporation Tokai National Higher Education and Research System (Japon)
Inventeur(s)
Suzuki, Takamitsu
Kataoka, Kotaro
Choi, Sihoon
Warnakulasooriya, Thiyu Sansika
Yonezawa, Yu
Yamamoto, Masayoshi
Abrégé
A semiconductor module according to an embodiment comprises a substrate, a first semiconductor element and a second semiconductor element, a first electrode, a second electrode, and a third electrode. The first semiconductor element and the second semiconductor element are arranged side by side on the substrate. The first electrode extends in the direction heading toward the substrate from the outside of the substrate and is electrically connected to a surface of the first semiconductor element facing the substrate. The second electrode extends in the direction heading toward the substrate from the outside of the substrate and is electrically connected to a surface of the second semiconductor element facing the substrate. The third electrode is electrically connected to surfaces of the first semiconductor element and the second semiconductor element on the opposite side to surfaces facing the substrate. The third electrode includes a body and a support part. The support part electrically connects surfaces of the first semiconductor element and the second semiconductor element on the opposite side to surfaces facing the substrate with the body, and supports the body.
H01L 23/48 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p. ex. fils de connexion ou bornes
H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans une seule des sous-classes , , , , ou , p. ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans la sous-classe
H01L 25/18 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant de types prévus dans plusieurs différents groupes principaux de la même sous-classe , , , , ou
A cooling assembly is connectable with a cold plate that comes into thermal contact with a heat source, and includes a first manifold, a second manifold, and a radiator. The first manifold causes a refrigerant having circulated through a first pipe to flow out from outflow ports toward the cold plate. In the second manifold, the refrigerant flowing into inflow ports from the cold plate circulates through a second pipe. In the radiator, the refrigerant having circulated through the second pipe circulates through the flow paths arranged side by side at intervals. Each of the first and second pipes opposes a portion of the radiator in the first direction.
A blower includes a pair of impellers, a pair of housings, a straightening grid, and a holding portion are included. The pair of impellers are rotatable with a central axis as a center, and are coaxial or substantially coaxial. The pair of housings extend along the central axis in a tubular shape with both end surfaces in an axial direction open, and respectively house the pair of impellers. The straightening grid is between the pair of impellers, and includes a plurality of ventilation passages that have a tubular shape and through which an airflow flows, the plurality of ventilation passages being arranged on a plane that intersects the plurality of ventilation passages in the axial direction. The holding portion is between the pair of housings, and holds a peripheral edge of the straightening grid. The straightening grid and the holding portion are made of different structures.
One embodiment of a motor control device according to the present invention comprises: a power module having a switching element; a drive substrate capable of outputting a signal for driving the switching element; a cooling jacket through which a refrigerant flows; and a control substrate that is electrically connected to the drive substrate, and controls power supply to a motor. The power module and the cooling jacket are positioned between the drive substrate and the control substrate, and are provided with a substrate connection part that connects the drive substrate and the control substrate.
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
A motor control device according to the present invention comprises a power module, a current sensor, and a housing that accommodates the power module and the current sensor. The current sensor comprises: a resin part; a bus bar that is partially embedded in the resin part and that electrically connects a power module and a lead wire; and a sensor part that is embedded in the resin part and detects a current flowing through the bus bar. The bus bar has a first portion that extends in a second direction and passes through a housing hole that penetrates the housing in the second direction, and a second portion that extends from an end of the first portion on one side in the second direction to the other side in a first direction. The first portion has a first protruding part that protrudes from the resin part to the other side in the second direction. The first protruding part is located outside the housing and is fastened to the lead wire. The resin part has a sensor fastening part that is fastened to the housing. The sensor fastening part has a through hole that penetrates the sensor fastening part in the second direction and through which a first fastening member for fastening the sensor fastening part and the housing passes in the second direction.
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
One embodiment of a drive device according to the present invention comprises: a motor having a rotor that rotates about a central axis; a first inverter and a second inverter that are disposed along an outer peripheral surface of the motor and are respectively connected to the motor; and a flow path through which a fluid flows. The first inverter has a first power module, a first capacitor, and a first heat sink. The second inverter has a second power module, a second capacitor, and a second heat sink. The flow path causes a fluid to flow through the first heat sink and the second heat sink. A direction parallel to the central axis is defined as a first direction, a direction orthogonal to the first direction is defined as a second direction, and a direction orthogonal to both the first direction and the second direction is defined as a third direction. The first inverter is disposed on one side in the second direction and on one side in the third direction with respect to the central axis. The second inverter is disposed on the one side in the second direction and on the other side in the third direction with respect to the central axis.
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 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
A coolant distribution unit includes a housing, a primary flow path, a secondary flow path, a heat exchanger, and an emission path. The primary flow path is housed in the housing and connects a primary inlet and a primary outlet provided in the housing. The secondary flow path is housed in the housing and connects a secondary inlet and a secondary outlet provided in the housing. The heat exchanger is housed in the housing and connected to the primary flow path and the secondary flow path. The emission path is housed in the housing and connects an emission port provided in the housing and the primary flow path or the secondary flow path.
In one aspect, a joining method according to the present invention is for joining first conductive parts of a first member and a second conductive part of a second member in a first direction. The first member has a plurality of first conductive parts, which are disposed spaced apart in a second direction that intersects with the first direction. The method comprises: attaching, to the plurality of first conductive parts and the second conductive part, a cap having a holding part which at least partially surrounds an axis extending in a third direction that intersects the first direction and the second direction, so as to hold the plurality of first conductive parts and the second conductive part together with the holding part; applying an external force in the first direction to the holding part at a position between adjacent first conductive parts to cause deformation, and fixing a plurality of joining parts of the first conductive parts and the second conductive part; and welding the plurality of joining parts.
One aspect of a rotor according to the present invention can rotate about a central axis, and comprises: a shaft that extends along the central axis; a rotor core that is positioned radially outward with respect to the shaft; and a pair of end plates that are disposed on both sides in the axial direction of the rotor core and sandwich the rotor core in the axial direction. The end plates each have: a rib part that protrudes in the axial direction and extends in the circumferential direction; and a fin region that is positioned radially inward of the rib part and protrudes in the axial direction. A plurality of the fin regions are provided at intervals in the circumferential direction, and each of the fin regions has at least one fin extending in the circumferential direction.
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
H02K 1/22 - Parties tournantes du circuit magnétique
A motor includes a stator core, a coil portion, and a circuit board in a lidded cylindrical cover and covered with a covering portion that fills an inside of the cover. A guide portion of the cover is at an end portion of a board accommodation portion that surrounds and accommodates the circuit board. The guide portion accommodates and guides a lead wire to an outside in a radial direction. An end portion on an inside in the radial direction of a side wall portion is connected to the end portion on the one side in the axial direction of the board accommodation portion. An end portion on the one side in the axial direction of the side wall portion is farther to the one side in the axial direction than the end portion on the one side in the axial direction of the board accommodation portion.
A symmetrically performing motor includes an asymmetrical rotor. The rotor includes a core and a plurality of arcuately arranged magnets. The core includes a hub, a plurality of pole segments, and a plurality of bridges extending between and interconnecting respective ones of the pole segments to the hub. Each of the bridges has an axially varying width. The pole segments are swept in form such that the rotor core exhibits mirror asymmetry. Each of the pole segments includes a body, a head disposed radially adjacent the body, and a pair of arcuately spaced apart ears extending generally tangentially outwardly from the head. The head defines an arcuate outer head face extending along an outer rotor margin. Each of the ears defines a respective outer ear face disposed inward of the outer rotor margin. Each of the outer ear faces defines an ear angle relative to the outer rotor margin.
H02K 1/274 - Rotors internes l'axe de magnétisation des aimants étant perpendiculaire à l’axe du rotor le rotor étant formé de plusieurs aimants disposés sur la circonférence
This motor control device comprises: at least one processor that executes a calculation for controlling a motor in accordance with a program; a determination unit that determines whether the operation of the processor is normal or not; a hardware logic circuit that executes processing simpler than the calculation performed by the processor and generates a limp home control signal for controlling the motor; and a switch that switches an output to continue outputting the calculation result of the processor in a normal state in which the operation of the processor is determined to be normal by the determination unit and to output the limp home control signal generated by the hardware logic circuit in an abnormal state in which the operation of the processor is determined to be abnormal by the determination unit. The hardware logic circuit generates the limp home control signal in parallel with the calculation performed by the processor even in the normal state and continuously outputs the limp home control signal after the switch switches the output to the limp home control signal.
H02P 29/028 - Détection d’un défaut, p. ex. court circuit, rotor bloqué, circuit ouvert ou perte de charge le moteur continuant de fonctionner malgré le défaut, p. ex. élimination, compensation ou résolution du défaut
A motor comprises: a rotor that has a plurality of magnets arranged along the circumferential direction; two stators that are positioned on one side and the other side of the rotor in the axial direction, the two stators having a plurality of coils arranged along the circumferential direction and facing the rotor in the axial direction; and a motor housing that accommodates the rotor and the two stators. The rotor has an impeller that is positioned radially inward of the plurality of magnets, the impeller generating an airflow flowing from one side to the other side in the axial direction. The motor housing has: a first inflow port which is positioned on a surface on one axial-direction side and into which flows a first airflow generated along the axial direction by the rotation of the impeller; a first outflow port which is positioned on a surface on the other axial-direction side and from which the first airflow flows out; a second inflow port which is positioned on a radial-direction-side surface on the one axial-direction side with respect to the rotor and into which flows a second airflow generated along the radial direction by the first airflow; and a second outflow port which is positioned on a radial-direction-side surface on the other axial-direction side with respect to the rotor and from which the second airflow flows out.
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
98.
ROTOR CORE, ROTATING ELECTRIC MACHINE, AND DRIVE DEVICE
One aspect of a rotor core of the present invention is a rotor core of a rotor rotatable around a central axis, the rotor core including a pair of first magnet holes adjacent to each other in a circumferential direction, and a first hole portion located between a pair of the first magnet holes in the circumferential direction. A pair of the first magnet holes extend in directions away from each other in the circumferential direction from the inner side in a radial direction toward the outer side in the radial direction when viewed in an axial direction. The first hole portion is provided at a position overlapping a first virtual line passing through the center in the circumferential direction between a pair of the first magnet holes and extending in the radial direction when viewed in the axial direction, and has an asymmetric shape across the first virtual line.
A spindle motor is provided. The spindle motor inclues a base plate becoming a part of a housing of a disk drive device including a bottom wall portion extending perpendicularly to a rotation axis of a disk; and a cylindrical wall portion protruding upward from an upper surface of the bottom wall portion and has a shaft through hole through which a shaft is inserted. The spindle motor further includes the shaft extending along the rotation axis and has a lower end inserting through the shaft through hole; an annular stator core; a rotor; and a bearing unit supporting the rotor to be rotatable about the shaft as the rotation axis. The shaft has a shaft inclined portion which is disposed at the lower end of the shaft and has an outer diameter decreasing toward a lower side in an axial direction.
An electrostatic actuator according to one aspect of the present disclosure comprises a flexible shell, a dielectric liquid contained inside the shell, and a plurality of electrodes positioned outside the shell. The shell comprises a junction part positioned at the center, and a plurality of pump parts that communicate with the junction part and are aligned in the circumferential direction centered on the junction part. The pump part has a first side surface positioned at one end in the circumferential direction, and a second side surface positioned at the other end in the circumferential direction. The plurality of electrodes are positioned on the first side surface and the second side surface of each pump part.
H02N 1/00 - Générateurs ou moteurs électrostatiques utilisant un porteur mobile de charge électrostatique qui est solide
B25J 19/00 - Accessoires adaptés aux manipulateurs, p. ex. pour contrôler, pour observerDispositifs de sécurité combinés avec les manipulateurs ou spécialement conçus pour être utilisés en association avec ces manipulateurs
