| 摘要 |
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.
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