Patent ID: 8820183

Claim:
A deceleration mechanism, comprising: a base; and a transmission device rotatably connecting with the base, comprising: a driving assembly comprising a driving wheel; and a driven assembly comprising a driven wheel having a diameter larger than the driving wheel; and at least one fixing assembly comprising a positioning member fixed on the driven wheel, a fastener connecting with the positioning member, and a resilient member, the fastener comprising a fixing block and a fastener bolt which extending through the positioning member and fastened with the fixing block, the fastener bolt comprising a head, the resilient member being sleeved on the fastener bolt and arranged between the head of the fastener bolt and the positioning member, wherein the transmission device further comprises at least two transmission members winding on the driving wheel for at least one winding and criss-crossing and winding on the driven wheel, respectively, the driven wheel defines at least two channel portions, each channel portion corresponds to one of the at least two transmission members, each channel portion comprises a first groove and a second groove substantially parallel to the first groove, each transmission member extends out of the first groove of the corresponding one of the at least two channel portions, and then winds around the driving wheel and extends into the second groove of the corresponding one of the at least two channel portions, an end of each of the at least two transmission members is fastened to the fixing block.