Patent ID: 6710506
Filing Date: 2004-03-23
Classification: H02K

Abstract:
An alternating current generator including a stator having a stator core with a plurality of slots formed at inside surface of said stator core and a stator winding disposed in the slots and a rotor disposed opposite said stator and having trapezoidal claw-shaped pole pieces that alternately extend in opposite directions to interleave each other,wherein: each of said pole pieces has substantially symmetric front and rear chamfered surfaces at opposite corners thereof and a tip chamfered surface at the tip thereof between said front and rear chamfered surfaces, said chamfered surfaces facing the inside surface of said stator core; said tip chamfered surface increases a distance from the inside surface of said stator core as said tip chamfered surface becomes away from the circumferential center of said pole pieces; and said tip chamfered surface has narrower area at a front half thereof in the rotation direction than the rear half thereof.