Patent ID: 8552611
Filing Date: 2013-10-08
Classification: H02K,Y10T

Abstract:
1. A coil end structure of a rotating electric machine comprising a stator and a rotor, the stator is provided with a stator core, a plurality of slots disposed in the stator core in such a way that the plurality of slots are disposed at intervals in a circumferential direction of the stator core and are configured to penetrate the stator core in an axial direction thereof, and a coil; the coil is constructed by disposing a plurality of U-shaped coil segments, each of which has a pair of legs and a head joining two legs at either one end portion of each leg, in such a way that the legs pass through the slot and project from the slot, and joining projecting portions of the legs projecting from the slot; each of the plurality of coil segments is constructed from a bundle of a plurality of flat wires that are aligned in a row so as to be side-by-side in a radial direction of the stator core at the pair of legs of the coil segment; and the head of the coil segment is a constituent component of the coil end and is disposed in such a way that adjacent flat wires are aligned in the circumferential direction of the stator, wherein a surface of a flat wire confronting a surface of another adjacent flat wire at the head of the coil segment, which constitutes the coil end, is identical to the surface of the flat wire confronting the surface of the adjacent flat wire at the leg inserted in the slot.