US 12,435,776 B2
Electric cable driving mechanism having self-return function
Zhihui Zhang, Shanghai (CN); Jinghui Chen, Shanghai (CN); Yutong Guo, Shanghai (CN); Jiahao Shen, Shanghai (CN); Peina Lian, Shanghai (CN); Qi Wang, Shanghai (CN); and Jian Chang, Shanghai (CN)
Assigned to KEIPER SEATING MECHANISMS CO., LTD., Shanghai (CN)
Filed by KEIPER SEATING MECHANISMS CO., LTD., Shanghai (CN)
Filed on Dec. 24, 2023, as Appl. No. 18/395,608.
Application 18/395,608 is a continuation of application No. PCT/CN2022/099725, filed on Jun. 20, 2022.
Claims priority of application No. 202110715889.1 (CN), filed on Jun. 25, 2021; and application No. 202121426492.2 (CN), filed on Jun. 25, 2021.
Prior Publication US 2024/0133453 A1, Apr. 25, 2024
Prior Publication US 2024/0229906 A9, Jul. 11, 2024
Int. Cl. F16H 25/24 (2006.01); H02K 7/06 (2006.01)
CPC F16H 25/24 (2013.01) [H02K 7/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electric cable driving mechanism having a self-return function, comprising a housing assembly, an electric motor, a three-stage transmission mechanism and a multifunctional nut, the three-stage transmission mechanism comprises a coil spring assembly, the electric motor is fixed to the housing assembly, and the three-stage transmission mechanism and the multifunctional nut are mounted in the housing assembly; and the multifunctional nut comprises two cable mounting grooves and is in transmission connection to the electric motor by means of the three-stage transmission mechanism,
wherein the three-stage transmission mechanism comprises a multifunctional screw rod, and the multifunctional screw rod has an external thread section,
wherein the multifunctional nut comprises a non-self-locking internal threaded hole, several guide strips, two limited planes and the cable mounting groove, the non-self-locking internal threaded hole is formed in a middle of the multifunctional nut and is screwed onto the external thread section of the multifunctional screw rod by means of the non-self-locking internal threaded hole; the guide strips are formed on an upper surface and a lower surface of the multifunctional nut and extend in an axial direction of the non-self-locking internal threaded hole, and a guide groove matching the guide strip is formed in the housing assembly; and the limited plane is formed at each of a top surface and a bottom surface of the multifunctional nut, and the housing assembly limits the limited plane.