Abstract: A method for insulating connection ends of a stator winding includes a resin placing step of placing a resin member formed of a thermosetting resin which is to be melted by heating on connection ends in a coil end portion of a stator winding of a rotary electric machine, a melting step of melting the resin member by heating to cover the connection ends with a melted resin, and a curing step of curing the melted resin after the melting step. Recesses and projections for positioning that correspond to the arrangement locations of the connection ends can be provided on a surface of the resin member.

Abstract: In a rotor core (12) of a rotor (10), a core interior refrigerant path is formed. The core interior refrigerant path includes a first refrigerant path (22) formed for every magnetic pole and extending along each q axis from the outer circumferential end of the rotor core (12) toward the inner circumference of the rotor core (12); a second refrigerant path (24) formed for every other magnetic pole and extending along a d axis from the inner circumferential end of the rotor core (12) to a position closer to the inner circumference than the permanent magnet (16) is; and a third refrigerant path (26) extending in a rotor circumferential direction at a position displaced in the rotor shaft direction relative to the first refrigerant path (22) to provide fluid communication between the first refrigerant path (22) and the second refrigerant path (24).

Abstract: A rotor related to the present invention is for a rotary electric machine. The rotor includes a rotor core and magnets. The rotor core has a plurality of core refrigerant passages. The core refrigerant passage each includes an inlet passage, a magnet cooling passage and an outlet passage. The inlet passage is configured such that a liquid refrigerant flows into the inlet passage from a shaft refrigerant passage. The magnet cooling passage is configured such that the liquid refrigerant flows into the magnet cooling passage from the inlet passage. The magnet cooling passage extends in an axial direction. The outlet passage is configured to flow the liquid refrigerant from the magnet cooling passage to a gap. An axial position of the outlet passage in the rotor core is at one place at a central position in the axial direction.

Abstract: A stator for a rotary electric machine includes an annular yoke, and teeth projecting from the yoke in a stator radial direction. Both ends of each of the teeth in a stator axial direction include reduced-width parts. The width of each of the reduced-width parts is smaller than the width of the remaining part of each of the teeth. Stator coils each is wound around each of the teeth in concentrated winding, and includes at least one curved portion in a coil end portion. The curved portion corresponds in position to at least part of the reduced-width parts.

Abstract: A stator of a rotating electric machine includes plural slots disposed in a circumferential direction of a stator core, and a coil body formed by a coil that is disposed as a single conductor in the slot in the circumferential direction of a stator core and that is wound for plural turns in the slot in a radial direction of a stator core. The coil has a flat conductor section, a magnetic body layer provided around the flat conductor section, and an insulating film provided around the magnetic body layer.

Abstract: A stator for a electric motor, the stator including: a stator core including a yoke having an annular shape, and a plurality of teeth protruding from an inner circumferential surface of the yoke in a stator radial direction; a stator coil wound around the teeth, the stator coil being configured to generate a rotating magnetic field as a current is applied thereto; and a cancel coil extending in a stator axial direction at positions on the inner circumferential side and the outer circumferential side relative to the yoke, the cancel coil being wound around the stator core so as to extend in the stator radial direction and traverse the yoke at positions outside the stator core in the stator axial direction, and constituting one or more closed circuits.

Abstract: A stator includes a stator core has slots that are each provided between stator teeth disposed on the stator core. The insulation paper is disposed in the slot between the coil and the stator core defining the slot has a recess at a position adjacent to connection parts between side walls and a bottom wall of the insulation paper. The recess extends so as to be apart from the connection parts in one of a radial direction and the circumferential direction. The insulation members include a projection that is configured to be disposed inside the recess.

Abstract: An electric vehicle drive device includes a casing; and a plurality of motor generators mounted in the casing, each of the motor generators including a plurality of fastening portions at which a stator of the motor generator is fixed to the casing, and a number of the fastening portions of one of the motor generators being coprime to a number of the fastening portions of at least one of the rest of the motor generators.

Abstract: A rotor includes a rotor core and a permanent magnet. A core refrigerant passage is configured to guide refrigerant supplied from a shaft refrigerant passage to an outer peripheral end of the rotor core. The first refrigerant passage extends from an inner peripheral end of the rotor core to a position inside the permanent magnet. The first refrigerant passage is placed at a position deviating from a q-axis of the rotary electric machine in a circumferential direction. The second refrigerant passage is provided on the q-axis. The second refrigerant passage extends from the outer peripheral end of the rotor core toward an inner peripheral side in the rotor core. The third refrigerant passage configured to provide communication between the first refrigerant passage and the second refrigerant passage, the third refrigerant passage being placed at a position deviating from the second refrigerant passage in a rotor axis direction.

Abstract: A rotary electric machine stator includes a stator core, a multi-layer winding coil, a first insulating resin layer, and a second insulating resin layer. The multi-layer winding coil is arranged with a predetermined number of steps in the radial direction of the teeth. Each step of the multi-layer winding coil includes a lowest layer coil of one winding and a surface layer coil of another winding. The first insulating resin layer is arranged between the teeth and the lowest layer coil, or between an insulator that is fixed to the teeth and the lowest layer coil. The second insulating resin layer is arranged locally at curved portions of the multi-layer winding coil that correspond to corner portions of four corners of a rectangular cross-section of the teeth. The second insulating resin layer is arranged extending across a plurality of steps of the multi-layer winding coil.

Abstract: A vehicle body structure includes a first middle floor unit for a gasoline vehicle and a second middle floor unit for a hybrid vehicle, and the first and second middle floor units are made interchangeable with each other. A front floor unit and a rear floor unit are made shareable by the gasoline vehicle and the hybrid vehicle. That is, the front floor unit and the rear floor unit can be regarded as a platform. Additionally, the second middle floor unit includes a housing, and an IPU is stored in an interior of the housing.

Abstract: A stator and a rotary electric machine include a stator core including a plurality of stacked annular electromagnetic steel plates with coupling portions. The coupling portions are arranged with a pitch of an integral multiple of a central angle. The central angle is defined as an angle between two adjacent magnetic poles of the same polarity relative to a rotational center of the rotor. When a number of the coupling portions is an odd number, fixing portions are arranged with the same pitch as the pitch of the coupling portions, or with a pitch corresponding to a divisor of the pitch of the coupling portions. When a number of the coupling portions is an even number, the fixing portions are arranged with a pitch corresponding to a divisor of the pitch of the coupling portions, or a divisor of 180°.

Abstract: A stator of a rotary electric machine includes a stator core, coils and magnetic bodies. The stator core includes a plurality of teeth protruding towards the rotor and being spaced apart from each other and a plurality of slots arranged between two adjacent teeth. The coils are formed out of coil bodies being stacked in radial direction, thus the direction into which the teeth are extending, and are wound inside of slots around the teeth. The magnetic bodies are arranged between adjacent coil bodies. The thickness of the magnetic bodies in radial direction increases with increasing length of the tooth or with decreasing distance towards the air gap between rotor and stator.

Abstract: A stator is for a rotary electric machine. The stator includes a stator core includes a stator yoke having an annular shape, teeth being projected to an inner diameter side from the stator yoke, coils wound around the teeth, and a reinforcing member. The reinforcing member has a ring shape, and fixed to an axial end surface at a tip of each of the teeth. The tip is a portion on the inner diameter side of an arrangement range of the coil. The reinforcing member is a non-magnetic body.

Abstract: A method for manufacturing a rotary electric machine rotor includes forming core block elements; inserting magnets in corresponding one of the magnet holes; forming magnet core blocks by injecting a molten resin into each of the magnet holes from above the magnet, solidifying the molten resin, and thereby forming a resin portion so as to integrate each of the core block elements and the magnets. End surfaces of the magnets are exposed on a first end surface; and the molten resin is injected at a second end surface. The method also includes forming a rotor by stacking and integrating plural magnet core blocks, the plural magnet core blocks being stacked such that first end surfaces of two magnet core blocks that are disposed at both ends in an axial direction constitute end surfaces at both ends of the rotor in the axial direction.

Abstract: A method for manufacturing a stator of a rotary electric machine includes: assembling an insulator and a stator coil to a tooth; and after assembling, pouring a liquid adhesive into an opening of the insulator from an outer side of the stator coil so as to fix the stator coil to a stator core.

Abstract: A stator includes a stator core and an insulator. The insulator includes a main body and a wall. An adhesive is attached to a portion of a triangular gap between the wall of the insulator and a yoke of the stator core. The adhesive is expandable, and adheres and fixes the insulator to the stator core by expanding to fill in the gap by being heated. Also, a stator manufacturing method includes attaching an adhesive to the wall of the insulator or an inside wall of the yoke, installing the insulator on a tooth, and heating the stator core and the insulator.

Abstract: Provided is a telescopic shaft having a coated section that reduces sliding resistance, with fluctuation of the sliding resistance according to sliding position of the telescopic shaft being reduced. A female shaft 16B is fitted onto a male shaft in a state of interference, and by causing the male shaft 16A to slide back-and-forth a specified number of times in the axial direction with respect to the female shaft 16B while applying, for example, a load in a direction that bends the male shaft 16A with respect to the female shaft 16B, friction heat is generated between side surfaces 411 of grooves 41 in the female shaft 16B and the coated section 61, which heats the coated section 61 and causes the coated section 61 to expand along the entire length in the axial direction of teeth 51 of the male shaft 16A. Therefore, the coated section 61 plastically deforms along the entire length in the axial direction of the teeth causing compressive strain to occur.

Abstract: A coil wire for a rotating electrical machine forms a coil body wound on teeth of a stator for the rotating electrical machine and includes an element wire assembly and a covering member. The element wire assembly has a plurality of element wires coated with insulation and bound together. The covering member is an electrical conductive member covering around the element wire assembly and provided with a conductive side surface and a slit. The conductive side surface is a surface with which magnetic flux from the teeth is linked when the coil wire is wound on the teeth. The slit is provided on the conductive side surface along a longitudinal direction of the coil wire, and the slit extends from an inner peripheral side to an outer peripheral side of the coil body in an coil end of the coil body.

Abstract: A fixing method for fixing a coil insulator which is provided between a stator core 5 including a back yoke 7 and a plurality of teeth 8 projecting in the radial direction from the back yoke 7, and a coil 6 wound around the stator core 5, to the stator core 5, includes preparing the stator core 5 in which a fixing hole 11 is formed corresponding to a respective one of the teeth 8, on an end face in the axial direction of the back yoke 7, and preparing a plurality of coil insulators 12 which include each a main body 14 composed of a heat-softenable insulating material and arranged on the circumference of a respective, one of the teeth 8, and a fixing portion 20 which is projected in the radial direction from the main body 14 and covers the fixing hole 11. Each coil insulator 12 is arranged on the circumference of a respective one of the teeth 8 by fitting thereto.