Patent ID: 11939808
Assignee: ASSA ABLOY ENTRANCE SYSTEMS AB
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC E

Claim 4:
5. The drive mechanism according to claim 2, wherein:
the planetary gear train further includes a first-stage sun gear, a first-stage planet gear, a first-stage planet carrier, a second-stage sun gear and a second-stage planet carrier;
an output shaft of the electric motor is connected to the first-stage sun gear, and the first-stage planet gear is mounted on the first-stage planet carrier and engaged with the first-stage sun gear; and
the second-stage sun gear and the first-stage planet carrier are attached together or integrally formed, and the second-stage sun gear is engaged with the second-stage planet gear mounted on the final-stage planet carrier.