Motor vehicle gear motor drive

Details Motor vehicle gear motor drive Motor vehicle gear motor drive

1992-04-17

1995-05-09

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 516

Patent

active

054143160

ABSTRACT:
For a reliable moisture-tight seal at the separation point between a motor housing and a gear housing with a drive shaft of the motor projecting into the gear housing as a helical shaft and its mounting (cup bearing) in the region of the separation point, the cup bearing has a double-lip seal in the sense of a complete moisture seal of the motor housing relative to the gear housing assigned to it. An outside seal of the gear housing is thus eliminated. In order to be able to guarantee long maintenance-free operating lifetimes in spite of penetration of moisture into the gear housing part, the worm wheel which meshes with the helical shaft made of steel, which projects into the gear housing part, consists of POM plastic with lubrication-modified POM plastic added in a certain mixture ratio.

REFERENCES:
patent: 2771786 (1956-11-01), Gilbert et al.
patent: 3745716 (1973-07-01), Turner
patent: 3874722 (1975-04-01), Pickles
patent: 4152612 (1979-05-01), Endo
patent: 4633375 (1986-12-01), Tres
patent: 4643040 (1987-02-01), Adam et al.
patent: 4739678 (1988-04-01), Miura et al.
patent: 4993277 (1991-02-01), Adam et al.

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