Planetary gear transmission systems or components – Differential planetary gearing – Spur gear differential
Patent
1991-02-25
1992-11-10
Lorence, Richard
Planetary gear transmission systems or components
Differential planetary gearing
Spur gear differential
475222, 475252, 475300, 180247, F16H 3708, F16H 138
Patent
active
051620260
ABSTRACT:
A front axle drive assembly is disclosed which requires less lateral distance than known prior art assemblies. The drive is preferably for use in four wheel drive vehicles having an offset differential case. In such systems, the differential case is offset toward one side from the vehicle center line to accommodate the engine at the center line. An axle half on the offset side thus has reduced lateral space. The invention includes the use of a planetary system, requiring relatively little lateral space to split torque toward the two front wheels, thus providing additional lateral space for the axle half on the offset side. A constant velocity universal joint mounted between the planetary drive and the offset side axle half is received within the differential case. The lateral space savings resulting from the use of the planetary system allows the offset side axle half to be longer, providing benefits to the vehicle suspension system. In a further embodiment, a relatively simple disconnect for disconnecting the sun gear from a axle shaft is disclosed for part-time four wheel drive use.
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Dana Corporation
Lorence Richard
Ta Khoi Q.
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