Abstract: A compact drive unit for actuating parking brakes is provided. The drive unit has a reduction gear that is formed by a two-stage belt drive, in combination with a drive motor that is made up of a brushless direct current motor. The two-stage belt drive preferably consists of two toothed belt drives functionally arranged in series; the direct current motor preferably has an external rotor with a rare-earth magnetic ring.
Type:
Grant
Filed:
October 28, 2002
Date of Patent:
January 4, 2005
Assignee:
TRW Automotive Electronics & Components GmbH & Co. KG