Patent ID: 7086136
Filing Date: 2006-08-08
Classification: H02K,Y10T

Abstract:
1. A method of manufacturing a sequential segment joining type stator coil for use in an electric rotating machine, comprising the steps of: preparing a large number of segments each having a generally U-shaped or generally V-shaped head portion, in-slot conductor portions extending from both ends of said head portion and individually accommodated in a pair of slots of a stator core and protruding end portions extending from both said in-slot conductor portions to protrude from an end surface of said stator core; placing end tip portions forming tip portions of said protruding end portions and protruding in axial directions by pairs in an radially adjoining condition to produce a plurality of end tip portion pairs; sandwiching and pressing proximal portions of said plurality of end tip portion pairs between a pair of basal electrodes in radial directions in a state where a circular-arc-like interposition member is put between said plurality of radially adjoining end tip portion pairs; and applying a voltage between a tip electrode facing tip surfaces of said end tip portion pair and said pair of basal electrodes or said interposition member to electrically weld said end tip portion pair together.