A power feeding device includes: a generator, the generator including a stator fixed to a wheel and a cylindrical rotor that rotates around a rotation axis of the wheel; an inertial member that is fixed to the cylindrical rotor and maintains a constant attitude by its own weight; a circuit board that is fixed to the stator and is mounted with a power feeding circuit to supply an output of the generator to a load; and a circuit receiving space that is provided inside the cylindrical rotor and receives a whole of the circuit board or an element that is mounted on the circuit board and protrudes from the circuit board.

An electric machine including a pulse inverter having a region with an oil space and busbars, wherein the electric machine is electrically connected to the pulse inverter by the busbars such that the busbars are electrically connected to a connection of the pulse inverter, wherein the busbars and the electric machine are cooled by oil, and wherein the oil for supplying and cooling the busbars is stored within the oil space in the region of the pulse inverter.

A motor assembly includes an output shaft disposed along a central axis extending in one direction, a motor that rotates the output shaft, a circuit board electrically connected to the motor, a power supply that supplies power to the motor and the circuit board, and a case having a tubular shape that extends in an axial direction and accommodates the motor, the circuit board, and the power supply. A substrate surface of the circuit board and the power supply are disposed to face each other in a predetermined direction that is orthogonal or substantially orthogonal to the axial direction.

A rotating electric machine for a vehicle includes a rectifier constituting a rectification circuit which rectifies the alternating current generated in the stator; a battery terminal protruding from the rectifier and configured to be connected with a battery cable; an insulating member having a through hole in which the battery terminal is inserted; and a waterproof cap attached to the insulating member so as to cover a connection part of the battery terminal with the battery cable in a waterproof state. One of an inner peripheral surface of the through hole of the insulating member and an outer peripheral surface of the battery terminal has a conical tapered face. The insulating member and the battery terminal are pressed against each other at the tapered face.

This present disclosure provides a compressor and a refrigeration device having the compressor. The refrigeration device has a coupling assembly and a frequency converter connected to one end of the coupling assembly. The compressor has a first shell and a permanent magnet motor. The permanent magnet motor is set in the first shell and connected to the other end of the coupling assembly. By designing the relevant parameters of the motor of the compressor, the efficiency of the motor and the compressor can be improved.

A motor device and a method for producing same are provided. A connector storage unit (33d) and a substrate storage unit (33c) which are provided in a gear case (31) open in a direction (axial direction of output shaft) which intersects the axial direction of an armature shaft. As a result, when assembling a motor device (10), it is possible to store a connector member (60) and a control substrate (50) in the connector storage unit (33d) and the substrate storage unit (33c), which have comparatively large openings, by insertion therein from the same direction.

A pressure supply unit for a brake system including a booster body that defines an axially extending cylinder. A piston is slideable within the cylinder. The piston defines a bore that receives a spindle. The spindle is rotationally fixed and axially moveable for providing the axial movement of the piston. A motor is positioned about the spindle and is configured to axially translate the spindle and piston. A ball and socket joint connects the piston and spindle while accommodating pivoting movement of the spindle. The ball and socket joint includes a ball at a front end of the spindle and a socket in the bore of the piston which receives the ball.

A bearing for a rotating electric machine. The bearing includes a plastic body and at least one electrical conductor fixed to the plastic body in a non-detachable manner.

The invention relates to a geared motor comprising a first brushless electric motor part having a stator, a rotor and a drive shaft, a second part having an output shaft and a reduction gear mechanism and an electronic part. The reduction gear mechanism comprises an output shaft, a worm and a toothed wheel designed to be engaged by the worm and to drive the output shaft in rotation. The geared motor comprises at least one rolling guide bearing disposed on the drive shaft and a multipolar magnet for measuring the position of the rotor. The rolling bearing is disposed between the measurement magnet and the worm such that the electric motor can be controlled depending on the measurement of the position of the rotor.

An electric compressor includes a motor housing, an inverter, a cover, and a fastener. The inverter includes a board; an electronic component; a holder composed of an insulating material, the holder containing the electronic component and supporting the board; a bus bar integrated with the holder, and electrically connected to a circuit pattern and the motor housing; and a tubular member interposed between the cover and the bus bar, with the fastener inserted in the tubular member. The fastening force from the fastener causes the tubular member to press the bus bar toward the motor housing.