Patent ID: 9677664
Date: 2017-06-13
CPC Classifications: F16H

Claim:
1. A vehicle differential device which distributively transmits rotational force to a pair of output shafts, the rotational force being transmitted from a vehicle-installed power source to a differential case, the differential case being housed in a transmission case, comprising: pinions placed in the differential case; a pinion shaft placed to pass through a rotation axis of the differential case, supported in the differential case and penetrating through and rotatably supporting the pinions; and a pair of side gears which are in mesh with the pinions inside the differential case and connected respectively to the pair of output shafts, wherein the differential case includes a plurality of oil intake holes being respectively at positions offset toward the pinions from an intermediate point between two of the pinions positioned adjacent in a peripheral direction of the differential case, the oil intake holes passing through an outer peripheral wall of the differential case in an inside-outside direction and being capable of taking lubricant oil in the transmission case into the differential case, the oil intake holes are formed such that as seen in a projection plane orthogonal to the rotation axis, axes of the oil intake holes extending from inner opening ends to outer opening ends of the oil intake holes are inclined forward in a rotational direction of the differential case in forward traveling of a vehicle, and as seen in the projection plane, the pinions are placed outside areas interposed between first imaginary lines and second imaginary lines, the first imaginary lines joining the rotation axis and one ends in a peripheral direction of the inner opening ends of the oil intake holes, the second imaginary lines joining the rotation axis and the other ends in the peripheral direction of the inner opening ends of the oil intake holes.