Patent ID: 6462453
Filing Date: 2002-10-08
Classification: H02K

Abstract:
A stator for an alternator, said stator comprising:a cylindrical stator core formed with a number of slots extending axially at a predetermined pitch in a circumferential direction; and a stator coil installed in said stator core, said stator coil comprising a number of winding sub-portions, each of said winding sub-portions being installed in said stator core by housing electrically-insulated strands of wire in slots a predetermined number of slots apart so as to form different layers relative to a slot depth direction and connecting said different layers in said slots said predetermined number of slots apart to each other in series outside said slots in a predetermined connection pattern to form coil ends, said coil ends being aligned and mutually spaced circumferentially to constitute two coil end groups of said stator coil, an electrically-insulating resin portion being formed by applying a resin so as to cover surfaces of apex portions of said coil ends constituting at least one of said two coil end groups while ensuring air passage spaces between circumferentially-adjacent coil ends and those between radially-adjacent coil ends below said apex portions thereof.