Abstract: A rotating electric machine includes a rotor, a stator, a cooling device and a pair of cooling liquid collection tanks. The stator includes an annular stator core and a stator coil. The stator core is disposed radially outside the rotor so as to surround the rotor. The stator coil is mounted on the stator core so that a pair of coil ends of the stator coil protrude axially outward respectively from opposite axial end faces of the stator core. The cooling device is configured to supply cooling liquid to vertically upper parts of the coil ends of the stator coil. Each of the cooling liquid collection tanks is arranged to surround a vertically lower part of a corresponding one of the coil ends so as to collect and temporarily reserve therein the cooling liquid moved from the upper part to the lower part of the corresponding coil end.

Abstract: An electric motor has multiple core portions, multiple bobbins covering the respective core portions, and multiple coil windings wound on the respective core portions and bobbins. Each of the bobbins has a first and a second circumferential forward ends, at which a first and a second holding portions are formed. The first holding portion holds a winding-start portion and the second holding portion holds a winding-end portion. The winding-start portion is prevented from being brought into contact with the winding-end portion and main winding portion of the coil winding between the winding-start portion and the winding-end portion.

Abstract: One embodiment provides a stator for an electric rotary machine, the stator including: a stator core having plural slots; segmented coils of plural phases; and a pair of base plates provided at both ends of the stator core, wherein the segmented coils have plural substantially-straight coil bars which are respectively inserted in the slots in the stator core and plural connection coils which are disposed on the base plates so as to connect together the coil bars of the same phase, and wherein the stator core and the coil bars make up a stator core assembly and the base plates and the connection coils make up base plate assemblies, so that the stator is made up of the stator core assembly and the base plate assemblies.

Abstract: A stator for an electric rotary machine includes: a stator core having a plurality of slots; and segmented coils of a plurality of phases (for example, coils 50 in the embodiment), wherein: the segmented coils of a plurality of phases have pluralities of coil bars which are inserted individually in the plurality of slots in the stator core and which extend substantially in a straight line and pluralities of connection coils which connect together the coil bars of the same phase to thereby make up extending portions; the connection coils each comprise an inner connection coil and an outer connection coil which are disposed in different axial positions; and the inner connection coil faces an outer connection coil of a different phase in an axial direction and the outer connection coil faces the inner connection coil of a different phase in the axial direction.

Abstract: A stator for an electric rotary machine includes: a stator core having a plurality of slots; and segmented coils of a plurality of phases, wherein: the segmented coils of a plurality of phases have pluralities of coil bars which are inserted individually in the plurality of slots in the stator core and which extend substantially in a straight line and pluralities of connection coils which connect together the coil bars of the same phase to thereby make up extending portions; and the coil bars are fixed in place individually in the slots in the stator core in such a state that the coil bars each are covered by an insulation material.

Abstract: A centrifugal gas compressor radial magnetic bearing (125) may include windings (126), a lamination sleeve (130), and a lamination (127). The lamination (127) aligned with the windings (126) may provide for efficient operation of the radial magnetic bearing (125). The centrifugal gas compressor shaft (120) may include a tapered region (118) with an adjacent shelf (124) for alignment with the forward surface (131) and taper of the lamination sleeve (130). The lamination sleeve (130) may include one or more axial hydraulic fitting ports (136) for coupling the lamination sleeve (130) and shaft (120) with an interference fit.

Abstract: A vibration generator includes a housing, a vibrating body arranged inside of a circumferential wall portion of the housing, and a band-like leaf spring arranged between the vibrating body and the circumferential wall portion. The leaf spring includes a connection portion connected to the vibrating body, an attachment portion attached to the circumferential wall portion of the leaf spring and an intermediate portion formed between the connection portion and the attachment portion to extend around the vibrating body. The connection portion and the attachment portion are arranged at one transverse side and the other transverse side of the vibrating body along a direction intersecting a vibration direction of the vibrating body. The intermediate portion is arranged in a vibration-direction outer region of the vibrating body and formed in a single layer to extend across the vibration direction of the vibrating body.

Abstract: A vibration generator includes a circumferential wall portion, a vibrating body arranged inside the circumferential wall portion in an opposing relationship with a coil and configured to reciprocatingly vibrate in one direction, a band-shaped leaf spring arranged between the vibrating body and the circumferential wall portion to support the vibrating body on the circumferential wall portion, and a damper member including a base portion attached to one of the vibrating body and the leaf spring and a tip end portion extending toward the other of the vibrating body and the leaf spring. The tip end portion of the damper member makes sliding contact with the leaf sprig or the vibrating body.

Abstract: An apparatus (structure) is provided to support a superconductor winding (61) of an electromotive machine. One or more elongated loops (74) and appropriate support structure (120) may be arranged to provide radial and tangential support to the superconducting winding (61). The elongated loops may be made of a material substantially resistant to heat flow. An axially-extending base assembly (100) may be arranged to anchor loops (74) with respect to the rotor core at a proximate end (76) of the elongated loops. A cradle (80) may be configured to define a recess (82) to receive the superconductor winding and to support the elongated loops at a distal end (78) of the loops.

Abstract: A rotating electric machine includes a stator, a rotor, and a coolant supply passage. Coils are wound on the teeth of the stator. The rotor is disposed coaxially with the stator, and has an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap formed therebetween. The coolant supply passage is disposed inside the rotor, and is configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap. A discharge groove is formed in the distal end face of the corresponding tooth. The discharge groove is inclined radially outwardly of the stator, from a coolant supply position as an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth.

Abstract: A transmission for a vehicle and a method of assembling a modular motor assembly in the transmission are disclosed. The transmission includes a housing defining a cavity along a longitudinal axis. The transmission further includes a first motor/generator and a second motor/generator each disposed in the cavity. The transmission also includes a first support supporting the first motor/generator such that the first motor/generator is mounted to the first support to define a first modular unit. The first modular unit is attached to the housing within the cavity. The transmission further includes a second support supporting the second motor/generator such that the second motor/generator is mounted to the second support to define a second modular unit. The second modular unit is attached to the first modular unit such that the first and second modular units align with each other along the longitudinal axis within the cavity of the housing.

Abstract: A stator includes a core body provided so as to contact a substantially cylindrical peripheral-wall inner surface of a frame and having a stator coil wound thereupon, and a mold portion in which a coil end of the stator coil is molded out of resin. A gap is provided between the peripheral-wall inner surface and the mold portion.

Abstract: A double-stator motor of an example embodiment includes: an annular rotor connected to a rotary shaft and integrally rotates with the rotary shaft, an inner stator arranged radially inward of the rotor, and an outer stator arranged radially outward of the rotor. The rotor includes a plurality of segments annularly arranged in the circumferential direction, spaced apart from each other by a predetermined distance, and a plurality of permanent magnets each interposed between circumferentially adjacent segments, the permanent magnets being alternately magnetized in the circumferentially opposite direction. The rotor, the inner stator and the outer stator have the same number of poles. The inner and outer stator windings of the inner and outer stators, respectively, are connected so that their phases are reversed to each other. Thus, the magnetic fields generated by the magnetomotive forces of the inner and outer stators are applied to specific segments in parallel.

Abstract: A motor cooling device having good cooling performance, which is adapted to promote heat transfer between a coil end and a coil end cover even if the flowing amount of oil is small. A heat of a stator is withdrawn by the oil flowing around the coil end. For this purpose, the motor cooling device comprises a flow path formed between an outer face of the coil end and an inner face of the coil end cover, and a flow rate adjusting unit for changing a cross-sectional area of the flow path by moving the coil end cover toward the coil end or away from the coil end. The flow rate adjusting unit widens the cross-sectional area of the flow path in case a feeding amount of the oil to the flow path is relatively large, and narrows the cross-sectional area of the flow path in case a feeding amount of the oil to the flow path is relatively small.

Abstract: An insulator of an armature includes an upper resin member and a lower resin member. Each of the upper and lower resin members includes decreased thickness portions. Axial positions of the decreased thickness portions of the upper and lower resin members are arranged to overlap at least partially with each other. Each of the upper and lower resin members further includes a rib arranged to project from a corresponding one of the decreased thickness portions. The rib improves the strength of the corresponding decreased thickness portion and reduces the likelihood that any of the decreased thickness portions of the upper and lower resin members will be damaged when the two members are fitted to each other.

Abstract: The present invention provides an electric rotating machine capable of providing a high quality and efficient machine operation with reduced oscillation and noise by lowering torque ripple. The electric rotating machine includes a stator having a plurality of teeth facing a rotor, and a plurality of slots providing spaces for winding coils around the teeth. The rotor has a pair of permanent magnets embedded therein and located in a “V” shape configuration so as to let magnetic force act on the teeth such that the rotor within said stator is driven to revolve by reluctance torque and magnet torque. An outer diameter ratio ? of an outer diameter Dr of the rotor to an outer diameter Ds of the stator falls in a range from 0.61 to 0.645.

Abstract: An actuator assembly includes a housing with a motor compartment, a gear compartment, a bulkhead separating the motor compartment from the gear compartment, and an aperture through the bulkhead. The actuator assembly also includes a motor assembly in the motor compartment defining a space radially between the motor assembly and the gear motor compartment. A high thermal conductivity material is disposed within the space to transfer heat from the motor assembly to the housing. The bulkhead includes one of a groove and a rib surrounding the aperture on the side of the bulkhead facing the motor compartment and the motor assembly includes the other of the groove and the rib such that the rib fits within the groove to prevent the high thermal conductivity material from migrating radially inward of the groove and the rib when the high thermal conductivity material is injected into the space.

Abstract: The present invention relates to a method for assembling a motor set that includes: coupling a rotor housing having a plurality of operating holes to a stator having shaft bushings with holes formed therein through the operating holes, thereby making the holes to be seen through the operating holes; coupling the holes of the stator associated with the rotor housing to stator assembly holes of a motor set assembly, the holes of the stator being aligned with the stator assembly holes of the motor set assembly; and inserting rivets into the holes through the operating holes and coupling the rivets to the stator assembly holes.

Abstract: An actuator assembly includes a housing having a central axis, a motor compartment on one end defined about the central axis, a gear compartment on the other end. An electronic rotational position sensor is fixed relative to the housing proximate the motor compartment. A motor assembly is disposed in the motor compartment and has a hollow input shaft extending along the central axis into the gear compartment. An output shaft extends along the central axis and has a lower end extending out of the gear compartment and an upper end extending freely through the hollow input shaft to a point proximate to the electronic rotational position sensor. A gear assembly is supported within the gear compartment for translating rotation of the input shaft to the output shaft. A sensed object is disposed on the upper end of the output shaft opposed to the speed sensor.

Abstract: Electric generator is disclosed having a stator and a rotor. The rotor being rotatable around a center axis and relatively to the stator and the stator includes a number of stator windings extending in freely exposed end windings. The stator and/or the rotor is provided with at least one barrier means which barrier means axially extends to such a manner that at least the end windings of the stator are at least partially covered.