Patent ID: 6906437

Claim:
Current-rectifying arrangement for rotary electrical machines of the type comprising: a first support for a plurality of positive diodes, having the general form of an elongate-shaped plate, a second support for a plurality of negative diodes, in the form of a plate forming part of the rear bearing of the machine, a diode connector and a device for cooling by creating a forced flow of a cooling fluid, such as air, in the axial direction of the machine, through the rectifying arrangement, the first and second supports for the positive and negative diodes and the connector being superimposed in the direction of the axis of the machine and the first support for the positive diodes forming a positive radiator carrying on its front face oriented towards the axis of the machine cooling fins which extend in the axial flow, in the radial direction of the machine, wherein the positive radiator device is produced in the form of at least one molded piece ( 50 , 51 , 51 ′), whose face oriented towards the axis carries a large number of fine cooling fins ( 60 ) procuring a large heat exchange surface area, a positive diode support device which comprises two diode support plates, aligned in the peripheral direction about the axis of the machine, wherein the support device is fixed to the rear bearing ( 68 ) by three fixings ( 3 , 54 , 54 ′, 84 , 85 ), including one in the joining area ( 54 , 54 ′, 84 ) of the two parts ( 51 ), and wherein the two support plates ( 51 , 51 ′) each have at their adjacent ends a fixing lug ( 54 ) through which a passage hole ( 55 ) for a fixing member passes and wherein, in the assembled state, the two fixing lugs ( 54 ) are superimposed so that their passage hole ( 55 ) is axially aligned.