US 11,892,068 B1
Differential self-locking device
Qingwen Zeng, Shenzhen (CN); and Weiwei Xiong, Shenzhen (CN)
Assigned to SHENZHEN XINGKANG POWER ASSEMBLY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN XINGKANG POWER ASSEMBLY CO., LTD., Shenzhen (CN)
Filed on Aug. 10, 2023, as Appl. No. 18/448,153.
Claims priority of application No. 202211006148.7 (CN), filed on Aug. 22, 2022.
Int. Cl. F16H 48/29 (2012.01); F16H 48/22 (2006.01); F16H 48/11 (2012.01)
CPC F16H 48/29 (2013.01) [F16H 48/11 (2013.01); F16H 48/22 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A differential self-locking device, comprising:
a differential housing;
a half-shaft output gear set;
an upper worm and worm gear mechanism;
a lower worm and worm gear mechanism;
a differential planetary gear set;
a worm gear shaft;
brake pads; and
a positioning shaft sleeve;
wherein the half-shaft output gear set, the upper worm and worm gear mechanism, the lower worm and worm gear mechanism, the differential planetary gear set, the worm gear shaft; the brake pads; and the positioning shaft sleeve are disposed in the differential housing; the half-shaft output gear set comprises a left half-shaft output gear and a right half-shaft output gear; the left half-shaft output gear and the right half-shaft output gear are symmetrically disposed in the differential housing;
wherein the upper worm and worm gear mechanism and the lower worm and worm gear mechanism are rotationally symmetrically disposed; the upper worm and worm gear mechanism and the lower worm and worm gear mechanism are connected to the left half-shaft output gear and the right half-shaft output gear;
wherein the differential planetary gear set is disposed between the upper worm and worm gear mechanism and the lower worm and worm gear mechanism; the differential planetary gear set is connected to the upper worm and worm gear mechanism, the lower worm and worm gear mechanism, the left half-shaft output gear, and the right half-shaft output gear through gear meshing; the worm gear shaft is disposed between the left half-shaft output gear and the right half-shaft output gear.