US 11,746,884 B2
Power transmission device
Yusuke Suzuki, Shizuoka (JP); Takayoshi Urushibata, Shizuoka (JP); and Kenjiro Yasui, Shizuoka (JP)
Assigned to Jatco Ltd, Fuji (JP)
Appl. No. 17/789,358
Filed by JATCO LTD, Fuij (JP)
PCT Filed Dec. 7, 2020, PCT No. PCT/JP2020/045431
§ 371(c)(1), (2) Date Jun. 27, 2022,
PCT Pub. No. WO2021/137289, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 2019-240056 (JP), filed on Dec. 30, 2019.
Prior Publication US 2023/0050981 A1, Feb. 16, 2023
Int. Cl. F16H 57/04 (2010.01); F16H 1/28 (2006.01); F16H 57/021 (2012.01)
CPC F16H 57/0423 (2013.01) [F16H 1/28 (2013.01); F16H 57/021 (2013.01); F16H 57/045 (2013.01); F16H 57/0424 (2013.01); F16H 57/0431 (2013.01); F16H 57/0457 (2013.01); F16H 57/0471 (2013.01); F16H 57/0479 (2013.01); F16H 57/0486 (2013.01); F16H 2001/2881 (2013.01); F16H 2057/0216 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power transmission device comprising:
a pinion gear having a large pinion gear and a small pinion gear;
a carrier that supports the pinion gear;
a ring gear that engages with the small pinion gear;
an oil supply unit positioned above a horizontal line that passes through a revolution center of the pinion gear; and
a downstream side wall part facing a gear surface of the large pinion gear, wherein
the downstream side wall part is arranged to be adjacent to the oil supply unit further downstream in a revolution direction of the pinion gear than the oil supply unit when viewed from an axial direction.