Patent ID: 7439645
Filing Date: 2008-10-21
Classification: H02K

Abstract:
1. A stator of a rotary electric machine comprising a stator winding and a stator core having a plurality of slots in which portions of the stator winding are disposed, wherein the stator winding comprises: a plurality of series-connected regular segments having a pair of in-slot portions inserted into a regularly disposed pair of the slots and a turn portion; and a plurality of irregular segments having a pair of in-slot portions disposed in a pair of slots whose location is suitable to connect the regular segments to form the stator winding and a continuous crossover portion crossing over some of the regular segments, and wherein: the turn portions of the regular segments have portions extending along a center axis of the stator core between a top thereof and one end of the stator core; the continuous crossover portion has a sagging portion in contact with a portion of one of the regular segments extending along the center axis at a central portion thereof so as to reduce bending stress; and the crossover portion crosses over two neighboring regular segments that are arranged to be closer to each other in the circumferential direction than other regular segments.