Patent ID: 7868513
Filing Date: 2011-01-11
Classification: H02K

Abstract:
1. A vehicle A.C. generator comprising a rotor which comprises: a pair of pole cores, each having a plurality of claw-like magnet poles; a plurality of permanent magnets, each of the permanent magnets being placed between the pole cores in a direction to prevent leakage flux; a supporting member fixed to the pole cores, having projecting parts, and each of the projecting parts having a concave shape and being placed between adjacent claw-like magnet poles so that each of the projecting parts fixes the corresponding permanent magnet along a direction of a rotary shaft of the rotor; and a plurality of magnet holders, each of the magnet holders containing the corresponding permanent magnet therein, and being in contact with the projecting parts, wherein the claw-like magnet poles have grooves and stopper parts, each of the magnet holders with the corresponding permanent magnet is inserted along the grooves and a front end part of the magnet holder contacts with the stopper parts formed in the claw-like magnet poles when the magnet holders are fit to the claw-like magnet poles, and wherein the supporting member is placed at an end part side of the claw-like magnet poles through which the magnet holder is inserted along the grooves.