Patent ID: 8714527

Claim:
A deceleration device, comprising: a driving device; and a transmission assembly, comprising: a driving member connected to the driving device; and a first active subassembly; a second active subassembly comprising a transmission portion, the transmission portion defining a through hole to receive the driving member; a first transmission member coiling around the driving member and the first active subassembly, and being driven by the driving device, and rotating the first active subassembly; a second transmission member coiling around the first active subassembly and the transmission portion, and being driven by the first active subassembly, and rotating the second active subassembly; and two regulatory mechanisms elastically resisting the first transmission member and the second transmission member, respectively, wherein the driving member is inserted into the through hole, an end of the driving member away from the driving device protrudes from the through hole, and the first transmission member coils around the end of the driving member that is away from the driving device.