Patent ID: 7759830
Filing Date: 2010-07-20
Classification: H02K

Abstract:
1. An alternating-current generator for rotating, about an axis, a magnetized rotor relative to a stator to generate alternating-current power, the alternating-current generator comprising: a rectifier comprising: a frame having an end wall and surrounding the stator and the rotor such that the rotor is rotatable about the axis relative to the stator, the end wall having an inner surface and an outer surface opposing thereto, the inner surface of the end wall facing the rotor and the stator, the end wall being provided with: wherein the end wall is further provided with: an annular peripheral portion surrounding the axis of the rotor, the plurality of fin supports being formed on the external surface of the annular peripheral portion, the plurality of reinforcements being formed on the external surface of the annular peripheral portion; a boss arranged to be spaced apart from the annular peripheral wall and configured to support the axis of the rotor; and a plurality of boss supporting members each configured to extend from the boss in a radial direction of the axis of the rotor to join to the annular peripheral portion, the plurality of boss supporting members being spaced from each other in the circumferential direction of the axis of the rotor, and wherein each of the plurality of reinforcements comprises a pair of reinforcing ribs, one of the pair of reinforcing ribs of each of the plurality of reinforcements being located between the corresponding one of the plurality of fin supports and a corresponding one of the plurality of boss supporting members, the other of the pair of reinforcing ribs of each of the plurality of reinforcements being located between the corresponding one of the plurality of boss supporting members and the another one of the plurality of fin supports, the corresponding one of the plurality of fin supports, the corresponding one of the plurality of boss supporting members, and the another one of the plurality of fin supports being adjacent to each other in the circumferential direction of the axis of the rotor so that the corresponding one of the plurality of fin supports and the another one of the plurality of fin supports are joined to each other.