Patent ID: 6528912
Filing Date: 2003-03-04
Classification: H02K

Abstract:
An automotive alternator comprising:a rotor rotatably supported in a metal bracket; a stator secured to the bracket such that it is located around the outer periphery of the rotor to surround the rotor; a rectifying unit having a first cooling plate on which a plurality of first diodes are provided, and a second cooling plate on which a plurality of second diodes of the opposite polarity from that of the first diodes are provided, the second cooling plate being electrically connected to the bracket, and the first and second cooling plates being secured to an inner wall surface of the bracket; a resinous insulating bush mounted at an opening provided in the bracket; an output terminal which is electrically connected to the first cooling plate, loosely inserted in the insulating bush, and taken out of the bracket, a vehicular connecting terminal being connected to the takeout end of the output terminal; through holes which are provided in the first and second cooling plates and in which the output terminal is inserted; an external thread portion provided on the takeout end of the output terminal; an output terminal fastening nut threadably attached to the external thread portion to fasteningly secure the output terminal to the bracket; and a fastening seat provided at a position different from that of the output terminal fastening nut on the takeout end of the output terminal, wherein the counter-takeout end of the output terminal is inserted in the through holes of the first and second cooling plates and secured to the first cooling plate, the first and second cooling plates are secured together with the insulating bush to the bracket by the output terminal fastening nut, and the vehicular connecting terminal is fasteningly secured to the fastening seat by the nut threadably attached to the external thread portion.