Planetary gear transmission systems or components – Differential planetary gearing – Bevel gear differential
Patent
1997-04-17
1999-04-27
Wright, Dirk
Planetary gear transmission systems or components
Differential planetary gearing
Bevel gear differential
475230, 384623, B60K 1716
Patent
active
058974539
ABSTRACT:
The present invention provides a differential gear capable of constantly ensuring a stable differential motion restricting force even in the case of a low rotational speed. In the present invention, when there occurs a difference in rotational speed between output side rotary elements, rollers are allowed to roll while being in contact with the confronting faces of the input side and output side rotary elements. The rollers move along rotational trajectories of the output side rotary elements while being restricted by a holder element from rolling toward the direction inclined by a predetermined angle relative to the rotational trajectories of the output side rotary elements. Thus, there occurs a frictional force between the rollers and the contact faces therewith, which results in a resistance to restrict the differential motion, At that time, the rollers generate a sliding friction in the course of rolling, thereby always ensuring a stable frictional force based on a dynamic friction even at a low rotational speed.
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Kwon Peter T.
Wright Dirk
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