Patent ID: 8601898

Claim:
A deceleration mechanism, comprising: a driving wheel; a driven wheel of a diameter exceeding a diameter of the driving wheel; at least one transmission member coiling around the driving wheel and criss-crossing and coiling around the driven wheel; and at least one tension assembly fixed to the driven wheel, arranged between the at least one transmission member and the driven wheel and elastically resisting the at least one transmission member and the driven wheel, wherein the at least one tension assembly comprises a resisting member and a plurality of first resilient members; the driven wheel comprises a receiving portion to which the resisting member are connected; and the first resilient members are arranged between the receiving portion and the resisting member, the resisting member comprises a resisting surface which is curved and having a radius substantially the same as the radius of the driven wheel, and the at least one transmission member coils around the driven wheel and the resisting member.