Electric drive unit with a bush having different diameters

US6177742A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Detlef Lauk · Renchen, DE
• Ernst Fischer · Anchorage, US
• Hansjoerg Karcher · Bühl, DE
• Juergen Herp · Laufenburg (Baden), DE
• Richard Hurst · Offenburg, DE

Key dates

• Filing date: Feb 26, 1999
• Grant date: Jan 23, 2001
• Expiry date: Feb 26, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2057/0224
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electric drive unit, for windshield wipers of a motor vehicle, including a drive motor, having an armature accommodated in a substantially cup-shaped pole housing, and including a gearbox, secured by a face end to the pole housing for receiving at least one worm, wheel supported on a power takeoff shaft. The worm wheel engages a worm connected to an armature shaft of the drive motor. The power takeoff shaft is supported in an eccentric bush which is rotatable to set the axial spacing between the armature shaft and the power takeoff shaft and can be mounted in the rotated state, in a manner fixed against relative rotation, in the gearbox. The eccentric bush is embodied in a graduated fashion, such that it has a larger diameter on a side toward the flange than on another side remote from the flange.