US 12,326,188 B2
Sliding surface sealing structure, gear box, and motor unit
Kazuyuki Yamamoto, Chiba (JP); and Takashi Tai, Chiba (JP)
Assigned to MABUCHI MOTOR CO., LTD., Chiba (JP)
Appl. No. 18/838,234
Filed by MABUCHI MOTOR CO., LTD., Chiba (JP)
PCT Filed Aug. 25, 2023, PCT No. PCT/JP2023/030716
§ 371(c)(1), (2) Date Aug. 14, 2024,
PCT Pub. No. WO2025/046655, PCT Pub. Date Mar. 6, 2025.
Prior Publication US 2025/0116326 A1, Apr. 10, 2025
Int. Cl. F16H 57/029 (2012.01); F16H 1/16 (2006.01); F16H 57/031 (2012.01); F16H 57/039 (2012.01); F16H 57/04 (2010.01); F16J 15/32 (2016.01); F16H 57/00 (2012.01); F16H 57/02 (2012.01)
CPC F16H 57/029 (2013.01) [F16H 1/16 (2013.01); F16H 57/031 (2013.01); F16H 57/039 (2013.01); F16H 57/0472 (2013.01); F16J 15/32 (2013.01); F16H 57/0006 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02082 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A sliding surface sealing structure that seals a sliding surface between a rotating member that rotates about an axis and a sealing member that makes sliding contact with a circumferential surface of the rotating member, the structure comprising:
a wall surface configured to hold the sealing member between the wall surface and the circumferential surface of the rotating member;
an opposing surface facing the sealing member with a gap therebetween; and
a protruding portion protruding from the opposing surface toward the sealing member, wherein
the opposing surface faces the sealing member from one side in an axial direction in which the axis extends, and
the protruding portion has a shape having two rounded sides formed by two surfaces extending separately from each other from the opposing surface and a flat surface facing the sealing member as viewed from the axis.