US 12,305,747 B2
Power transmission device
Takashi Wakui, Saitama (JP); Motoshi Togasaki, Saitama (JP); Masahiro Imai, Saitama (JP); and Kazuki Sakurai, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Aug. 7, 2024, as Appl. No. 18/797,125.
Claims priority of application No. 2023-128838 (JP), filed on Aug. 7, 2023.
Prior Publication US 2025/0052317 A1, Feb. 13, 2025
Int. Cl. F16H 57/04 (2010.01); F16H 37/08 (2006.01); F16H 57/035 (2012.01); F16H 57/037 (2012.01); F16H 57/05 (2006.01); F16H 57/02 (2012.01)
CPC F16H 57/0483 (2013.01) [F16H 37/082 (2013.01); F16H 57/035 (2013.01); F16H 57/037 (2013.01); F16H 57/0423 (2013.01); F16H 57/0457 (2013.01); F16H 57/05 (2013.01); F16H 2057/02052 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A power transmission device comprising:
a planetary gear mechanism; and
a case accommodating the planetary gear mechanism, wherein
the planetary gear mechanism includes an input shaft, a sun gear, a plurality of planetary gears, a planetary carrier, and a ring gear,
the sun gear is an external gear provided on the input shaft,
a gear member is attached to one end of the input shaft,
a baffle plate extending between the gear member and the sun gear is attached to the case,
at least a part of the gear member and the planetary gear mechanism is immersed in a lubricating liquid stored in a lower portion of the case, and
the gear member is a driven sprocket around which a chain is wound.