Patent ID: 6566781
Filing Date: 2003-05-20
Classification: H02K

Abstract:
An automotive alternator, comprising:a rotor having first and second claw-shaped magnetic poles fitted onto a rotating shaft; and a stator having a stator core supported between front-end and rear-end brackets, and a stator coil, which is connected in a three-phase alternating current connection, being wound into said stator core, said stator core comprising: a core main body constructed by laminating strip-shaped steel plates, said core main body comprising a base portion and a plurality of tooth portions protruding radially inwards from said base portion to define core main body slots; and an end plate which is thicker than any of said steel plates and disposed on at least one end surface of said core main body, wherein a circumferential width of an end plate slot formed in said end plate is larger than a circumferential width of said core main body slots formed in said core main body, wherein each of said tooth portions of said stator is positioned to form an overlapping portion overlapping two of said first and second claw-shaped magnetic poles on said rotor facing said tooth portion, said two first and second claw-shaped magnetic poles having different polarity and being adjacent in a direction of rotation of said rotor, said end plate being disposed at one end of said overlapping portion thereof.