Patent ID: 6700243
Filing Date: 2004-03-02
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; an axial displacement restricting member which engages the insulating bush thereby to restrict the axial displacement of the output terminal and constitutes a fastening seat; and an external thread portion provided on the takeout end of the output terminal, wherein the counter-takeout end of the output terminal is secured to the first cooling plate, and the vehicular connecting terminal is fasteningly secured to the fastening seat of the axial displacement restricting member by a nut threadably attached to the external thread portion, wherein the axial displacement restricting member is externally fitted to the output terminal, and composed of a cylindrical metal bush having a flange of a large diameter on one end thereof, and wherein one end surface of the metal bush abuts against the vehicular connecting terminal, while the other end surface thereof abuts against the first cooling plate, and the flange thereof engages the insulating bush to restrain the axial displacement of the output terminal when the vehicular connecting terminal is connected to the takeout end of the output terminal.