US 12,264,735 B2
Power transmission device and power unit equipped with same
Shohei Nagata, Nisshin (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jan. 2, 2024, as Appl. No. 18/402,099.
Claims priority of application No. 2023-007456 (JP), filed on Jan. 20, 2023.
Prior Publication US 2024/0247711 A1, Jul. 25, 2024
Int. Cl. F16H 57/04 (2010.01); F16H 37/08 (2006.01); F16H 57/037 (2012.01); F16H 57/02 (2012.01)
CPC F16H 57/0423 (2013.01) [F16H 37/0813 (2013.01); F16H 57/037 (2013.01); F16H 57/045 (2013.01); F16H 57/0471 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power transmission device comprising:
a first gear;
a second gear meshing with the first gear;
a third gear that rotates integrally with the second gear;
a fourth gear meshing with the third gear;
a housing accommodating the first gear, the second gear, the third gear, and the fourth gear; and
a plate member mounted in the housing, wherein:
a lubricating liquid is stored in the housing such that a part of the second gear and a part of the fourth gear are immersed therein;
the plate member includes a catch tank arranged adjacent to the first gear, and a tray extending from the catch tank along the second gear into the lubricating liquid; and
the catch tank is configured to receive the lubricating liquid drawn up by the fourth gear and guide the lubricating liquid to a meshing portion between the first gear and the second gear.