The disclosure relates to a flywheel energy storage system including a casing, shaft, flywheel, and electric motor assembly. The casing has an inner vacuum chamber, at least one outer accommodating slot and at least one separator which separates the inner vacuum chamber from the at least one outer accommodating slot. The shaft is rotatably disposed in the inner vacuum chamber. The flywheel is located in the inner vacuum chamber and fixed to the shaft. The electric motor assembly includes a first motor rotor and a motor stator. The motor stator is accommodated in the at least one outer accommodating slot and fixed to the at least one separator. The first motor rotor is fixed on the shaft and located between the shaft and the motor stator. Part of the at least one separator located between the first motor rotor and the motor stator includes magnetically permeable material.

A method is for calibrating a multiturn sensor for determining the position of a spindle of a clutch actuator, in which the multiturn sensor (5) is operatively connected to a magnetic field of a permanent magnet (12) in that the multiturn sensor (5) is combined with an actuator transmission (3) which comprises a spindle (9) bearing the permanent magnet (12). In a calibration method which can be carried out particularly quickly and cost-effectively, during the assembly of the multiturn sensor (5), arranged on a carrier element (4), with the actuator transmission (3) bearing the spindle (9), the multiturn sensor (5) is operated outside its specified rotational range (0, n), wherein a position, set by actuating the actuator transmission (3), of the spindle (9) bearing the permanent magnet (12) provided for an operating case of the clutch actuator (1), is assigned to a specified end position of the rotational range (0, n) of the multiturn sensor (5), as a result of which a magnetic field of the permanent magnet (12) is aligned with the multiturn sensor (5).

To provide an outer rotor type motor capable of suppressing the runout of a top surface by improving the strength in a fitted part between a rotor yoke and a rotor shaft and suppressing resonance between vibration generated by rotation of a rotated body to be a load and motor vibration to thereby realize noise reduction. A rotor yoke is configured so that a rotor hub is fitted to a top surface portion formed in a cup shape integrally with a rotor shaft, and a reinforcing hub concentrically fixed to the rotor shaft with the rotor yoke is arranged so as to overlap the rotor hub.

An axial air gap motor comprises: a frame; a stator that is arranged in an outer side of the frame in a radial direction; a first rotor that is spaced from one side of the stator in an axial direction, that has an air gap therebetween, and that is rotatably arranged in one side of the frame; and a second rotor that is spaced from the other side of the stator in the axial direction, that has an air gap therebetween, that is rotatably arranged in the other side of the frame, and that is connected with the first rotor in the axial direction.

A drive module for a motor vehicle includes a housing, an electric machine, a rotor carrier, and an angular position sensor. The electric machine is for generating a drive torque and includes a rotor. The rotor carrier is connected substantially rotationally fixed to the rotor and mounted such that it can be rotated at least radially. The angular position sensor is for measuring an angular position of the rotor carrier. The angular position sensor is arranged such that the angular position of the rotor carrier or a first component substantially rotationally fixed to the rotor carrier can be detected by the angular position sensor in relation to a second component fixed to the housing.

A hybrid drive module, comprising an annular diaphragm spring having an inner surface and one or more fingers protruding radially inward from the inner surface and a carrier hub concentric with the diaphragm spring and connected to a rotor of an electric motor and a cover of a torque converter, the carrier hub having an outer surface with one or more retention grooves configured to interlock with the one or more fingers of the diaphragm spring to inhibit axial movement of the diaphragm spring relative to the carrier hub.

A motor of a ceiling fan includes a support unit, a rotor unit, a first bearing, a supporting bearing and a stator unit. The support unit has a shaft. The rotor unit has a rotational connecting member. The rotational connecting member includes a central hole through which the shaft extends, as well as an inner flange extending inwardly of the central hole. The first bearing includes an inner race fit around the shaft and an outer race connected to an inner periphery of the rotational connecting member. The inner and outer races are spaced from each other in a radial direction perpendicular to the shaft. The supporting bearing includes a fixed race fit around the shaft and a rotational race abutting with the inner flange. The fixed race and the rotational race are spaced from each other in an axial direction. The stator unit is connected to the support unit.

This rotating electric machine comprises: a stator having a stator core around which a plurality of coils are wound; a rotor supported to be rotatable relative to the stator with a predetermined gap therebetween; a rotor case that holds the rotor; and a first bearing and a second bearing that rotatably support the rotor case. The rotating electric machine includes: a first flow path formation body that forms a first flow path through which a refrigerant flows to a coil end part protruding from the stator core; a first case part which forms an accommodation space of the first bearing, is connected to the first flow path of the first flow path formation body, and fills the accommodation space with the refrigerant; a second flow path formation body which forms a second flow path through which the refrigerant flows to a coil end part disposed on the opposite side from the coil end part in the axial direction; and a second case part which forms an accommodation space of the second bearing, is connected to the second flow path of the second flow path formation body, and fills the accommodation space with the refrigerant.

To achieve miniaturization in the rotation axis direction. A motor includes a stator housing having an inner peripheral portion and an outer peripheral portion, a stator supported by an outer peripheral portion of the stator housing, a rotor housing covering the stator housing and the stator, and a magnet supported by an outer peripheral portion of the rotor housing. The stator includes a first surface provided at an inner side of the magnet, supported by the stator housing and positioned in a rotation axis direction, and a second surface opposing an outside in the rotation axis direction. A surface of the magnet supported by the rotor housing is provided at an upper surface portion side of the stator core in the rotation axis direction.

A bearing device includes an annular hub cap facing an inner ring. An inner annular surface of the hub cap abuts a part of one end surface of the inner ring which extends from an inner peripheral edge to an intermediate position located on the way from the inner peripheral edge to an outer peripheral edge. An annular adhesive retaining portion is formed between the area extending from the intermediate position to the outer peripheral edge of one end surface and at least an inclined annular surface of the hub cap.