Abstract: An electrical motor can be selectively configured to operator between a number of different configurations to alter the cooling arrangement. The electric motor can include an enclosure aperture disposed through the motor enclosure that can be selectively sealed or opened by a removable cover plate. When the cover plate is installed, the electric motor can operate with a TEFC configuration in which an internal cooling circuit is isolated from an external fluid source. When the cover plate is removed, the internal airflow can thermally interact with an external airflow from an external fluid source.

Abstract: A vibration-driven energy harvesting element that outputs an alternating current power from an output line, due to vibration from outside includes: an intermediate electrode that is not connected to the output line; a plurality of electret electrodes, each electret electrode being arranged to face the intermediate electrode and having an electret on at least a part of a surface of the electret electrode on a side facing the intermediate electrode; a holding unit that holds the intermediate electrode and the plurality of electret electrodes such that the intermediate electrode and the plurality of electret electrodes can vibrate with respect to each other; and a charge injector that injects a charge having characteristics opposite to a charge of the electrets formed in the surfaces of the plurality of electret electrodes, to the intermediate electrode.

Abstract: A circuit board includes a board body disposed on the opposite side of a plate-shaped portion of a center piece to a stator, and a heat generating element mounted to a surface on the plate-shaped portion side of the board body and disposed inside a radial direction range of a rotor housing. A heat-dissipation portion of a heatsink is on the plate-shaped portion side of the circuit board such that the heat-dissipation portion contacts the heat generating element either directly or through a thermally conductive material. A guide that opposes the heat-dissipation portion in an axial direction of a motor unit is formed at the plate-shaped portion. The guide forms an airflow guiding path between itself and the heat-dissipation portion, the airflow guiding path being shaped so as to guide air taken in through an air intake port from the radial direction outside toward a center of the motor unit.

Abstract: The invention relates to a device for driving a compressor of a vaporous fluid, particularly an electric motor. The device has a rotor and a stator, which are extended along a common longitudinal axis, as well as an insulation element. The insulation element is designed as a single part and connected with a stator core of the stator in a form-fitting manner such that the stator core and the insulation element form an integral and single-part component of the stator. The invention further relates to a method for producing a stator of the device, particularly the stator core with the insulation element.

Abstract: A rotary actuator is used in a shift-by-wire system for a vehicle. The actuator includes a motor, a controller, an upper case, a lower case, a case fastening member, and a board fixing member. The controller controls the motor. The upper case is made from resin and houses the controller. The lower case houses the motor together with the upper case. The case fastening member is made from metal and fastens the upper case and the lower case to each other. The board fixing member fixes a board of the controller to the case fastening member.

Abstract: A method of electrically grounding a rotor shaft of an electric motor includes removing a first lockplate fastener from a motor endshield and an internal bearing lockplate. A second lockplate fastener remains coupled to the motor endshield and internal bearing lockplate such that the internal bearing lockplate stays secured along an interior side of the motor endshield. A mounting plate of a shaft ground assembly is positioned along an exterior side of the motor endshield. The mounting plate supports a shaft ground that includes a conductive element configured to electrically couple to the rotor shaft. The first lockplate fastener is replaced with a first mounting plate fastener coupled to the mounting plate, motor endshield, and bearing lockplate to secure the mounting plate to the endshield and to secure the bearing lockplate along the interior side of the motor endshield.

Abstract: An electric drive unit includes a multi-phase AC motor including a plurality of first terminals, and a power converter including a plurality of second terminals. The power converter is fixed to an electric motor case so as to partially overlap the AC motor in an axial direction with a wall portion interposed therebetween. Each first terminal includes a first extended portion extending from the stator along the axial direction, and a first fastening portion. Each second terminal includes a second extended portion extending along an extending direction at a portion of the power converter that does not overlap the AC motor in the axial direction; and a second fastening portion. The electric motor case includes a communication hole formed in the wall portion, and a service hole formed in a portion located on an extension line of the fastener parallel to an insertion direction of the fastener.

Abstract: A control device for controlling an electric motor of an electrical device may include a flat plate and a power electronics. The plate may extend in a plate plane. The power electronics may include a plurality of electronic components arranged and interconnected on the plate. The power electronics may have at least one electronic power component that produces waste heat during operation. The at least one electronic power component may be arranged such that a body of the at least one electronic power component penetrates the plate plane. A plurality of power connections, via which the at least one electronic power component may be interconnected to the plurality of electronic components, may be arranged at an edge of the plate.

Abstract: A rotor hub comprises an inside cylindrical portion extending in an axial direction on an inner surface side of a rotor yoke and an outside cylindrical portion extending in the axial direction on an outer surface side of the rotor yoke, a motor gear wheel is integrally moulded on a portion of said outside cylindrical portion, and a rotor unit is assembled with a stator unit in such a way that a fixed shaft is inserted into a cylindrical hole in the rotor hub and a rotor magnet and pole teeth are facing.

Abstract: A motor includes a motor main body including a rotor and a stator, a housing that houses the motor main body, a controller that is located above the motor main body o controls rotation of the rotor, and a cover that surrounds the controller from a radially outer side. The housing includes a cover joint that is annular and surrounds the controller when viewed in an axial direction. The cover includes a cylindrical portion that surrounds the cover joint from an outside in a radial direction. The cover joint includes a contact portion that contacts a surface of the cylindrical portion in the radial direction and an adhesive joint that is bonded with the cylindrical portion via an adhesive in the radial direction. The contact portion and the adhesive joint are adjacent each other in a circumferential direction.

Abstract: A motor apparatus has a cooling structure capable of effectively cooling the motor by inducing a fluid flow into the motor. In particular, the motor apparatus includes: a first part having a first flow path and a motor installed thereon; a second part having a second flow path and configured to be rotatably mounted on the first part and connected to the motor; and a turbine portion coupled to the second part and including disks stacked on one another forming spaces therebetween. When the turbine portion is rotated together with the second part, air is drawn through the first flow path or the second flow path and introduced into an opening hole of each of the disks, and the air is discharged into the spaces formed between the respective disks to cool the motor.

Abstract: The present invention provides a motor comprising: a rotating shaft; a rotor including a hole through which the rotating shaft is inserted; and a stator disposed outside the rotor, wherein the rotor comprises a rotor core surrounding the rotating shaft, and a plurality of magnets coupled to the rotor core, the magnets are disposed such that each two magnets, adjacent to each other in the axial direction of the rotating shaft, have a predetermined spacing therebetween, and the sum of the spacings is 0.04 to 0.07 times the axial length of the stator.

Abstract: A motor unit includes a motor having a motor shaft extending along a first direction, an inverter that supplies electric power to the motor, a housing that supports the motor therein, an inverter case that is fixed to one side of the housing in a second direction orthogonal to the first direction and that houses the inverter, and a plurality of bolts that fasten the housing and the inverter case. The plurality of bolts include a first bolt extending along the first direction, a second bolt extending along the second direction, a third bolt extending along a third direction orthogonal to both the first direction and the second direction, and one or more fourth bolts extending in a fourth direction intersecting all of the first direction, the second direction and the third direction.

Abstract: Insulators each include a plurality of board holding claws projecting from an outer peripheral edge of the circuit board for engaging a plurality of board recesses, the plurality of board holding claws are arranged on the outer peripheral edge of the circuit board such that an interval of board holding claws on a connector-mounted side is smaller than an interval between board holding claws on a counter-connector-mounted side, and a load receiving pin, which receives a radial load, projects at a counter-connector-mounted position, which is opposite to a mounted position of a connector.

Abstract: The present disclosure concerns a haptic solenoid assembly for transmission of amplified vibrations to a vibrated member, the haptic solenoid assembly comprising a stationary pole comprising a casing defining a plunger-receiving cavity opening out in the casing and a coil at least partially surrounding the plunger-receiving cavity; a mobile pole comprising a mobile pole body at least partially received in the plunger-receiving cavity and displaceable therein when an electric current is provided to the coil; and a lever-mounting portion protruding outwardly from the plunger-receiving cavity and engageable to the vibrated member; and a solenoid vibration-damping system engaged to the stationary pole and at least partially surrounding the plunger-receiving cavity. The present disclosure also concerns a haptic solenoid system comprising a haptic solenoid assembly and a vibration-transmitting member connected to the lever-mounting end portion of the mobile pole and engageable to the vibrated member.

Abstract: The present disclosure is related to providing a motor capable of removing electric noise sufficiently. The present disclosure is also related to providing a motor capable of handling cases where no choke coil is disposed. A motor comprising a choke coil, a terminal electrically connected to a lead wire led out from the choke coil, and a bracket including a first wall part, a second wall part and an elastic part located between the first wall part and the second wall part in an axial direction of the choke coil, in which the choke coil is located between the elastic part and the second wall part in the axial direction, the terminal is sandwiched between the first wall part and the elastic part in the axial direction and the lead wire is led out from the elastic part side to the first wall part side.

Abstract: A throughflow motor assembly includes a motor assembly having a rotatable shaft and a housing with a motor assembly mounted to one end and a housing opening therethrough. A fan assembly is rotated by the rotatable shaft and received in the housing at an end opposite the motor assembly. The housing includes a partition which partitions the fan assembly and the motor assembly from one another, and includes at least one centrally located flow passage extending therethrough. The fan assembly draws air over the motor assembly, through the housing opening and at least one centrally located flow passage, and then into the fan assembly which exhausts the air.

Abstract: A rotor for an electric machine includes a core comprised of stacked laminations that define pockets between a hub portion and a pole portion. Each of the pockets are configured to receive magnetic material and define center cavities between regions of magnetic material to eliminate a flux leakage path between the magnetic materials. A cured mixture including an epoxy and a magnetic powder is disposed within the center cavities. The magnetic material may include sintered magnets and a cured mixture.

Abstract: Example aspects of a rotating machine, a method for pre-loading a rotating machine, and a method for using a rotating machine are disclosed. The rotating machine can comprise a stator; a rotor, wherein one of the stator and the rotor comprises a mounting flange formed monolithically therewith; a bearing directly mounted to the mounting flange; and the other of the stator and the rotor directly mounted to the bearing.

Abstract: A motor includes a rotor including an axially extending shaft, a stator, a housing, a heat sink disposed axially above the stator, a board fixed axially above the heat sink, a connector disposed radially outside the housing, and a connector pin accommodated in the connector. The heat sink includes a main body, and a protrusion which is continuous with the main body, the protrusion extending radially outward of the housing. The connector, the protrusion, and the board overlap in this order when viewed from axially below. The connector pin is positioned radially outside the protrusion.