Abstract: A rotary electric machine includes a rotor, a stator disposed facing the rotor in a radial direction having a stator core with a plurality of slots aligned in a circumferential direction and a stator winding wound around the slots of the stator core, and a cooling mechanism for cooling first and second coil-end groups of the stator winding by dropping a liquid coolant from an outer peripheral side thereof. The stator is disposed along an inner circumferential surface of at least one of the first and the second coil-end groups of the stator winding, and there is provided a shielding member for preventing the liquid coolant from falling into the inner circumferential side of the first and the second coil-end groups. Thus, it is possible to cool throughout the first and the second coil-end groups efficiently and reliably by the liquid coolant, a sufficient cooling effect can be obtained.

Abstract: A thermal insulation structure for an electronic device of the present invention is a thermal insulation structure which thermally insulates between an electronic circuit unit and a heat generator formed with another component. In the thermal insulation structure, a partition wall for separating each space and formed of resin having electric insulation properties is provided between the electronic circuit unit and the heat generator. Also, the partition wall is formed by integrating the resin and a thermal insulation material having thermal conductivity lower than thermal conductivity of air so that the resin includes the thermal insulation material. Further, the partition wall is formed by insert-molding the thermal insulation material with the resin. Further, the resin having the electric insulation properties is thermoplastic resin, and a thermal insulation raw material of the thermal insulation material is silica xerogel.

Abstract: Magnetic bearing that is provided with a radial actuator part and an axial actuator part, whereby the aforementioned radial actuator part comprises a laminated stator stack that is provided with a stator yoke, wherein the stator yoke is linked to a closed ferromagnetic structure that surrounds the stator yoke.

Abstract: A magnetic coupling includes an inner rotor (11) and an outer rotor (9) which at least partly surrounds the inner rotor (11). These rotors (11, 9) each are formed of magnetic material (18) and are coupled to one another by way of magnetic forces. The inner rotor (11) and/or the outer rotor (9) contain powdery, magnetizable material (18). The powdery, magnetizable material (18) is magnetized at a side lying opposite the other rotor at several locations distributed over the periphery.

Abstract: A rotary electric motor includes an annular stator, a rotor rotatably held on an inner circumferential side of the stator, a plurality of stator cores forming the stator, insulators attached to the stator cores and formed of an insulating material, coils wound around the insulators, and a plurality of terminals to which coil terminal lines of the coils are connected. Each of the terminals includes at least two protrusions protruding from a substrate. The at least two protrusions are formed of a permanent press-fitting portion for press-fitting one of the terminals into the corresponding one of the insulators and a temporary press-fitting portion for temporarily press-fitting the one of the terminals when the corresponding one of the coil terminal lines is joined to the one of the terminals with solder.

Abstract: A drive unit that includes a rotating electric machine, and a controller having a substrate with electronic components mounted on the substrate, and controlling a drive of the rotating electric machine. The drive unit also includes a first terminal electrically connected to the rotating electric machine or to a power supply, and a second terminal disposed on the substrate. The second terminal has an insertion hole into which the first terminal is inserted, and has a protruding shape protruding in parallel with an insertion direction or an anti-insertion direction of the first terminal. Also, the first terminal and the second terminal are in a resilient contact with each other.

Abstract: In the present invention, single-phase bus rings have single-phase-side rounded regions that are disposed at intervals on a circle smaller than a neutral-point bus ring and are positioned so that its circumferential edges are displaced in the circumferential direction relative to neutral-point-side connecting regions of the neutral-point bus ring and are positioned in a second axial position that is farther from a stator than a first axial position on which the neutral-point bus ring is partially positioned, and a pair of single-phase-side projections that extend radially outward from the circumferential edges of adjacent single-phase-side rounded regions beyond portions of the neutral-point-side rounded regions positioned in the first axial position, and are connected to each other at distal ends.

Abstract: The electric machine comprises a rotor, a stator surrounding the rotor and a support structure. The stator has a longitudinal center axis and is supported on the support structure with support elements. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator frame comprises two opposite end constructions and at least one frame plate located between the end constructions. A support element is located between each end construction and the adjacent frame plate and between adjacent frame plates. The support element is made of cast iron and attached to the end constructions, the frame plate and the support structure with fastening means based on a compression joint, whereby the stator frame becomes attached to the support structure via the support elements.

Abstract: A magnetic transmission is provided with: an inner rotor; an outer rotor; and a magnetic-field-modulating stator disposed coaxially between the inner rotor and the outer rotor. The inner rotor is provided with a first magnet array and a second magnet array arranged in the direction of the central axis and disposed at different pitches along the circumferential direction. The outer rotor is provided with a magnet array disposed along the circumferential direction. The magnetic-field-modulating stator is provided with a first magnetic body array and a second magnetic body array opposing the first magnet array and the second magnet array, respectively.

Abstract: The main motor for a railway vehicle is rotationally driven upon receiving an AC power supplied from an inverter circuit that includes a switching element formed by using a wide bandgap semiconductor. The inverter circuit applies a voltage having a PWM waveform to the main motor for a railway vehicle in at least part of a speed range of an electric vehicle. The stator of the main motor for a railway vehicle is configured to include an annular stator core provided with a plurality of slots in a circumferential direction and coils that are wound on the stator core and are accommodated in the slots, and includes a stator winding that is three-phase star-connected and is composed of parallel circuits the number of which is the same as the number of poles for each phase.

Abstract: A stainless steel motor with high weather resistance and high sealing performance comprises a cylindrical housing (11) made of a stainless steel material. A front end cover (12) is arranged at one end of the cylindrical housing, and a rear end cover (13) is arranged at the other end of the cylindrical housing. A rotary shaft hole (12a) is provided in the front end cover. A rotary shaft sealing sleeve (12b) is arranged in the rotary shaft hole, and a rotor shaft (12) is sleeved in the rotary shaft sealing sleeve (12b). A first drainage structure is arranged on the front end cover, and a second drainage structure is arranged on the rear end cover. A first wire penetrating hole (11a) and a second wire penetrating hole (11b) are provided in the cylindrical housing.

Abstract: A slipring assembly comprises a slipring module having at least one slipring track, which is in electrical contact with at least one slipring brush. The slipring module comprises an isolating body holding the at least one slipring track. Furthermore a cooling element is embedded into or attached to the slipring module to remove heat from the slipring module and to increase the temperature of the at least one slipring track. This allows decreasing the temperature of the slipring module to increase the maximum transferable power and lifetime.

Abstract: A stator of a rotating electric machine includes a stator core, a plurality of insulators and a plurality of concentrated winding coils. The stator core includes an annular yoke and a plurality of teeth. The insulators are located along outer peripheral wall surfaces of the teeth. Each of the insulators includes a plurality of first surfaces and a plurality of second surfaces. The second surfaces connect the first surfaces. The coils are fitted on the teeth on which the insulators have been placed from a radially inner side thereof. The first surfaces of each of the insulators are in contact with inner peripheral surfaces of the coil that is placed on the outer periphery of the insulator.

Abstract: A rotor of a rotating motor includes a boss into which a shaft is inserted, a rotor yoke provided on a side of an outer circumference of the boss and formed of a plurality of pole pieces connected into a circular ring shape, and a coupling member made of resin with which the boss and the rotor yoke are integrally molded. Each of the plurality of pole pieces is provided with an injection hole that is bored in an axial direction and into which the resin is injected in the integral molding.

Abstract: An electric rotating machine that can raise the utilization efficiency of cooling oil is obtained. In an rotation axle, there are provided an oil flow path having a predetermined length from an end of the rotation axle and a flow path hole that communicates with the oil flow path and has an opening toward the inside of the electric rotating machine; a supporting member includes a cylinder section and a disk section that partitions the cylinder section in the axis direction, and a discharging hole is provided at an end of the cylinder section; between the flow path hole and the discharging hole, there is provided a partition plate that encloses a space formed by the supporting member and the rotation axle and guides cooling oil traveling from the flow path hole to the inside of the electric rotating machine to the discharging hole.

Abstract: A vibration motor includes a housing; a fixed component; an elastic connecting piece; and a vibrating component comprising a counterweight suspended by the elastic connecting piece. One of the fixed component and the vibrating component includes a coil, and the other includes a magnet. The vibration motor further includes a damping piece fixed on the counterweight and facing the elastic connecting piece. One of the counterweight and the damping piece is provided with a slot and a glue dispersing slot connecting with the slot, and a projecting part formed on the other of the counterweight and the damping piece for matching with the slot.

Abstract: An end cap assembly for an electric motor has a brush assembly, a circuit board, an inductor and a grounded metal element. The brush assembly has a plurality of brushes. The circuit board is fixed relative to the brush assembly. The inductor is electrically connected to the circuit board. The grounded metal element is positioned between the brushes and the inductor to absorb high frequency electromagnetic radiation transmitted from the brushes to the inductor.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing; a fixed component accommodated in the housing; a vibrating component comprising a counterweight and a pole plate; and an elastic connecting piece for suspending the vibrating component in the housing. One of the fixed component and the vibrating component includes coils, and the other includes a magnet component. The pole plate includes a pole plate body part adhered to the counterweight and a fixation part positioned on two sides of the pole plate body, further, the fixation part is at least partially inserted into the counterweight.

Abstract: A linear vibration motor is disclosed. The linear vibration motor includes a housing; a vibrating unit in the housing, the vibrating unit including a magnet; a plurality of elastic members suspending the vibrating unit elastically in the housing; a drive coil positioned opposed to the magnet for driving the vibrating unit to vibrate along a first direction; a Hall sensor fixed on the housing and facing the magnet for detecting displacement of the vibrating unit along a direction vertical to the first direction; and a braking coil arranged on the housing and surrounding the Hall sensor for reacting upon the vibrating unit in accordance with the displacement detected by the Hall sensor in order to adjust the displacement of the vibrating unit vertical to the first direction.

Abstract: An apparatus for fixing a power line terminal may include a terminal guide configured to be mounted at one end of a motor cover to support a motor coil terminal and to have an upper surface provided with a plurality of insertion grooves, and a plurality of insert nuts configured to be inserted into the plurality of insertion grooves, the insert nuts manufactured separate from the terminal guide.