US 11,939,808 B2
Automatic door operator and drive mechanism thereof
Yong Chen, Suzhou Jiangsu (CN); and Jingfeng Zhang, Suzhou Jiansu (CN)
Assigned to Assa Abloy Entrance Systems AB, Landskrona (SE)
Appl. No. 17/442,376
Filed by Assa Abloy Entrance Systems AB, Landskrona (SE)
PCT Filed Mar. 27, 2020, PCT No. PCT/EP2020/058765
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2020/201112, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 201910267556.X (CN), filed on Apr. 3, 2019.
Prior Publication US 2022/0170307 A1, Jun. 2, 2022
Int. Cl. E05F 15/00 (2015.01); E05F 15/63 (2015.01)
CPC E05F 15/63 (2015.01) [E05Y 2201/434 (2013.01); E05Y 2201/624 (2013.01); E05Y 2201/628 (2013.01); E05Y 2201/70 (2013.01); E05Y 2201/702 (2013.01); E05Y 2201/72 (2013.01); E05Y 2900/132 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A drive mechanism, applied to an automatic door operator, the drive mechanism including a planetary reducer driven by an electric motor, and a drive shaft driven by the planetary reducer, wherein:
the planetary reducer includes a housing and a planetary gear train mounted in the housing;
the planetary gear train includes a final-stage planet carrier configured to output torque, and a center of the final-stage planet carrier is provided with a torque output hole; and
a first end of the drive shaft is detachably inserted in the torque output hole and is non-rotatably connected to the torque output hole, and a second end of the drive shaft extends out of the housing, wherein the first end of the drive shaft is provided with a first cutting surface, and the torque output hole is provided with a second cutting surface, the first cutting surface being engaged to the second cutting surface so that relative rotation between the torque output hole and the drive shaft is limited.