Patent ID: 6291917
Filing Date: 2001-09-18
Classification: F16H,H02K

Abstract:
An electric drive unit for windshield washers of a motor vehicle, including a drive motor having an armature (12) accommodated in a substantially cup-shaped pole housing (10), a substantially cup-shaped gearbox (20), secured by a face end to the pole housing (10), for receiving at least one transmission gear wheel (30) that meshes with a worm (32) connected to an armature shaft (14) of the armature (12), and the armature shaft (14) has a mushroom-shaped stop face (15) on a face end, against which a bendable spring for generating a defined initial stress comes to rest, the bendable spring is a curved bent spring (40), which has a substantially V-shaped profile formed by a tensioning plate (41) and by a leg (43), that said tensioning plate (41) is secured in the gearbox (20) and that the leg (43) yields in an axial direction of the armature shaft (14), which in the installed state said bendable spring rests, exerting an axial spring force, on the mushroom-shaped stop face (15) of the armature shaft (14).