Patent ID: 6831381
Filing Date: 2004-12-14
Classification: F16C,F16H,H02K

Abstract:
An electrical drive mechanism, in particular for motor vehicles, having a housing (10), having a commutator motor (14) disposed in the housing (10); this commutator motor (14) has a rotor shaft (17), a commutator (22), which is non-rotatably supported on the rotor shaft (17) and connected to an armature winding (21) that rotates along with the rotor shaft (17), and a brush holder (30) that is affixed in the housing (10), with commutator brushes (28) resting against the circumference of the commutator (22), and having a bearing (25) disposed in the vicinity of the commutator (22), which is comprised of a bearing bush (34) that encloses the rotor shaft (17) with rotary play, a bearing seat (35) that contains the bearing bush (34) and has support surfaces for axially supporting the bearing bush (34), and a clamping member (37) that clamps the bearing bush (34) in the bearing seat (35) against the support surfaces in a frictionally engaged fashion, wherein the clamping member (37) is a one-piece component of the brush holder (30) that is preferably comprised of plastic, characterized in that a worm (13) of a worm gear pair (11) is embodied on the rotor shaft (17) so that it is of one piece with the rotor shaft (17) and has a greater outer diameter than the rotor shaft (17), and in that the bearing bush (34) located between the worm (13) and the commutator (22)is slid onto the rotor shaft (17) before completion of the worm (13).