US 12,228,201 B2
Overload impact-resistant planetary reducer, robot joint, and quadruped robot
Xingxing Wang, Hangzhou (CN); and Zhiyu Yang, Hangzhou (CN)
Assigned to HANGZHOU YUSHU TECHNOLOGY CO., LTD., Hangzhou (CN)
Appl. No. 18/269,430
Filed by HangZhou YuShu TECHNOLOGY CO.,LTD., Hangzhou (CN)
PCT Filed Nov. 30, 2021, PCT No. PCT/CN2021/134227
§ 371(c)(1), (2) Date Jun. 23, 2023,
PCT Pub. No. WO2022/135078, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 202011560498.9 (CN), filed on Dec. 25, 2020.
Prior Publication US 2024/0133454 A1, Apr. 25, 2024
Prior Publication US 2024/0229909 A9, Jul. 11, 2024
Int. Cl. F16H 55/14 (2006.01); B25J 9/10 (2006.01); F16H 55/17 (2006.01); F16H 57/08 (2006.01)
CPC F16H 55/14 (2013.01) [B25J 9/102 (2013.01); F16H 55/17 (2013.01); F16H 57/08 (2013.01); F16H 2055/176 (2013.01); F16H 2057/085 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An overload impact-resistant planetary reducer, comprising a tooth face portion and a buffer portion;
the reducer component is a planetary gear;
the tooth face portion is an outer tooth portion of the planetary gear;
the buffer portion is a buffer layer assembled on an inner side of the outer tooth portion; in a case that the outer tooth portion is subjected to an impact force, the buffer layer generates deformation, causing the outer tooth portion to displace relative to a planetary gear shaft;
in a case that the impact force on the outer tooth portion disappears, the deformation of the buffer layer disappears, causing the outer tooth portion to reset relative to the planetary gear shaft;
the buffer layer is provided with a plurality of deformation through holes capable of being deformed by the impact force;
each of the plurality of deformation through holes has a triangular shape having a base side extending in a circumferential direction of the planetary gear and two sides extending from the base side towards a side of the planetary gear shaft, and
a line extending through a center of the base side and a vertex formed by the two sides of the triangle shape is offset from a center of the planetary gear shaft.