Robert Boschgmbh

Ludwig Bolz

Uwe Knappenberger

Gerhard Pflueger

Thomas Bilsing

Walter Ruhle

An electrical machine is proposed, preferably a rotary current generator (,), with a rectifier component (,) at the rear end area of its end shield (,), in which dissipation of waste heat is to be improved. Positive and negative heat sinks (,) with the positive and negative diodes (,), respectively, are screwed to the end shield (,) so as to be sandwiched together with a printed circuit board (,) for the connection between diodes and winding connections (,) with the inclusion of an insulating plate (,). The upper heat sink (,) has a plurality of cooling air openings (,) arranged next to one another at the inner circumferential area for a cooling air flow generated by the fan of the machine. In order to improve the dissipation of heat, axial cooling fins (,) are formed on at least at some of the cooling air openings (,) of the upper heat sink (,).

Electrical machine, preferably a rotary current generator with a rectifier component and with upper heat sink provided with axial cooling fins

To prevent transfer of firing or ignition shocks or jolts, and variations in torque transmitted due to compression and decompression of the driven pistons of an IC engine from causing damage to the starter motor, in which the starter motor includes a planetary gearing, (20-25-27), the annulus, or ring gear (20) of the planetary gearing is held in an intermediate bearing structure (10) extending transversely to the starter motor by elastic cushions, or pillows or plugs (18), fitted in recesses (17) of the intermediate bearing structure, and coupled to the annulus, or ring gear (20) by projecting stubs or pins (21) extending radially into openings (19) formed in the cushions or plugs.

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Waiblingen, Germany

Ludwig Bolz