Patent ID: 7012348
Filing Date: 2006-03-14
Classification: H02K

Abstract:
1. An on-vehicle AC generator comprising: a shaft rotatably supported in a case; a rotor fixed to said shaft; and a stator including a cylindrical stator iron core in which a plurality of slots extending in axial direction of said shaft are formed so as to be aligned circumferentially, and which is fitted to and supported in said case so as to contain said rotor therein, and a stator winding consisting of multiphase AC windings which are wound about said slots of said stator iron core; wherein said stator winding of said stator includes coil end portions extending from two end faces in axial direction of said stator iron core, and an insulating resin having adhesive properties is applied to an entire surface of each of said coil end portions leaving a space between an outer circumferential surface of said coil end portions and an inner circumferential surface of said case, as well as a corner portion formed by intersection of an outer circumferential surface of a bottom of said coil end portions and an end face in axial direction of said stator iron core is also filled with said insulating resin having adhesive properties at a portion adjacent to a stator supporting portion provided at the bottom of said coil end portions, wherein the end portion of said stator iron core is filled with a larger amount of insulating resin radially than said coil end portions.