Differential unit

Details Differential unit Differential unit

1996-03-27

1998-05-12

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

F16H 1455, B60K 1720

Patent

active

057498016

ABSTRACT:
A differential unit is disclosed which has a differential limiting function and which exhibits stable differential limiting characteristic even if the difference in the differential rotations is small. The differential unit has a differential case, pinion gears, side gears, a gear pump disposed between a left side gear and the differential case. The hydraulic actuator, and a multiple disc clutch, wherein the gear pump consists of a plurality of gear pumps each having a pump case formed integrally with the differential case, a first accommodation hole of the pump case, a plurality of second accommodation holes formed at intervals in the circumferential direction of the first accommodation hole, a large-diameter gear rotatively accommodated in the first accommodation hole at a position on the outer surface of a boss portion of the left side gear and arranged to be rotated together with the left side gear, and small-diameter gears rotatively accommodated in the second accommodation holes and engaged to the large-diameter gear.

REFERENCES:
patent: 2949792 (1960-08-01), Smith
patent: 3229550 (1966-01-01), Nickell
patent: 3232139 (1966-02-01), Nickell
patent: 5310388 (1994-05-01), Okcuoglu et al.
patent: 5595214 (1997-01-01), Shaffer et al.

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