Patent ID: 7628721

Claim:
A driving-force laterally-distributing device for distributing a driving force from a drive source of a vehicle to the left and right wheel axles depending on a driving state of the vehicle, the device comprising: differential means for transmitting the driving force from the drive source to the left and right wheel axles while permitting a rotational difference between the left and right wheel axles of the vehicle; driving-force laterally-adjusting means for adjusting the distribution of the driving force to the left and right wheel axles by controlling the transmission state of the driving force to be transmitted to the left and right wheel axles, the driving-force laterally-adjusting means being disposed coaxially with the axial line of the left and right wheel axles with respect to the differential means; differential limiting means for limiting the rotational difference between the left and right wheel axles by applying a limiting torque to the differential means, the differential limiting means being disposed coaxially with the axial line of the left and right wheel axels with respect to the differential means; and a body case housing therein the differential means, the driving-force laterally-adjusting means, and the differential limiting means, wherein the body case includes a partition portion disposed between the differential means and the differential limiting means and a wall portion disposed between the differential means and the driving-force laterally-adjusting means, and wherein the wall portion watertight partitions one region for housing the differential means, the differential limiting means, and the partition portion and another region for housing the driving-force laterally-adjusting means so that different oils are retained in the one region and the other region.