US 12,152,662 B2
Differential device
Yuki Kurosaki, Yamato (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Nov. 30, 2023, as Appl. No. 18/525,052.
Claims priority of application No. 2023-006037 (JP), filed on Jan. 18, 2023.
Prior Publication US 2024/0240710 A1, Jul. 18, 2024
Int. Cl. F16H 57/04 (2010.01); F16H 48/08 (2006.01)
CPC F16H 57/0426 (2013.01) [F16H 2048/082 (2013.01); F16H 57/0483 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A differential device comprising:
a pinion gear;
a pinion shaft for rotatably supporting the pinion gear;
a pair of side gears, which engage with the pinion gear and are fitted to a pair of drive shafts;
a differential case, which supports the pinion shaft, houses the pinion gear and the side gears, and has an opening on one side of the drive shafts; and
a differential cover, which has a first hole through which one of the drive shafts penetrates, is fixed to the differential case, and closes the opening, wherein
the differential cover has an oil passage which penetrates along the first hole from an inner surface facing the side gears to an outer surface opposite to the differential case and through which a lubricating oil flows,
a phase of a second hole supporting the pinion shaft differs from a phase of the oil passage by 90 degrees in a rotation direction of the differential case,
the differential cover has an oil groove in which the lubricating oil flows at a position facing a side gear on an inner surface side of the differential cover, and
an opening of the oil passage is located at a position of the oil groove.