Patent ID: 6989617

Claim:
Brush holder ( 2 ) for a vehicle alternator having a housing with a bearing ( 36 ), said brush holder ( 2 ) comprising: an insulating support ( 4 ) having an opening ( 22 ); a heat dissipating means ( 14 , 26 ) having a metallic seat fixed to the support ( 4 ); and an electrical circuit comprising a semiconductor control component ( 12 ), wherein the seat ( 14 ) receives for fixing on one of its faces the control component ( 12 ) within an opening ( 22 ) in the support ( 4 ) so that said control component ( 12 ) is fixed to the seat ( 14 ) at a position in said opening, and the seat ( 14 ) defines a part of the heat dissipation means ( 14 , 26 ) which is in contact with an ambient environment and arranged so as to receive heat from the control component ( 12 ), and wherein the seat is separate from the bearing ( 36 ) and not in contact with said bearing ( 36 ), said seat is partially embedded within a thickness of the support ( 4 ) and the seat receives on the other of its faces a heat dissipator so that the heat dissipation means ( 14 , 26 ) is composed of two distinct and adjacent parts.