Patent ID: 7816835

Claim:
A tandem AC generator for a vehicle comprising: a primary brush and a secondary brush which are slidingly contacted with a common slip ring and placed near to each other in a circumference direction of the common slip ring; a brush holder comprising a primary brush holder and a secondary brush holder separated from each other and independently accommodating and supporting the primary and secondary brushes so as to move the primary brush and the secondary brush in a radius direction of the common slip ring, and integrated in a single body by a connection metal member whose both ends are insert-molded in the primary and secondary brush holders, respectively; and a primary brush spring and a secondary brush spring, accommodated in the primary brush holder and the secondary brush holder, spring-biasing those spring-energy to the primary and secondary brushes, independently, toward the radius direction of the common slip ring; and terminals fixed and electrically connected to the primary and secondary brush holders, respectively, and through which electric power is supplied to the primary and secondary brushes, wherein the connection metal member comprises a primary connection metal member protruding from the primary brush holder and a secondary connection metal member protruding from the secondary brush holder toward the common slip ring, and the primary connection metal member and the secondary connection metal member are welded together.