Drive unit, in particular for a windshield wiper system on a mot

Details Drive unit, in particular for a windshield wiper system on a mot Drive unit, in particular for a windshield wiper system on a mot

1991-03-18

1993-02-02

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

74526, 152503, F16H 2140, G05G 504, B60S 108

Patent

active

051829576

ABSTRACT:
The present invention relates to a drive unit, in particular for a windshield wiper system on a motor vehicle, comprising a drive motor, a gearing accommodated in a gear housing and following the drive motor, which gearing has an output shaft driven in pendulum fashion and a pinion seated on it in a manner protected against twisting as well as including a stop member for limiting the pendulum angle of the output shaft. The stop member is either swivellable with the pinion or firmly arranged on the output shaft. In order to obtain a good guidance and a reliable hold of the stop member it is pushed upon the output shaft by means of a ring-shaped portion. In particular the ring-shaped portion can simultaneously serve as a buffer disc for the pinon, so that in comparison with a known drive unit, piece parts can be saved.

REFERENCES:
patent: 2744282 (1956-05-01), Dyer et al.
patent: 3768325 (1973-10-01), Kucharski, Jr.
patent: 4645042 (1987-02-01), Inoue et al.

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