Patent ID: 11920657
Assignee: MINTROBOT CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 3:
4. The cycloidal reducer of claim 3, wherein the reduction unit further comprises:
a friction reduction means which is formed in such a manner as to be inserted into the through-hole in the cycloidal rotor, of which an outer circumferential surface comes into contact with an inner circumferential surface of the through-hole, and of which an inner circumferential surface comes into contact with an outer circumferential surface of the rotor pin;
wherein the friction reduction means comprises:
a first ring portion configured to come into contact with the inner circumferential surface of the through-hole and being concentric with the through-hole;
a second ring portion formed in such a manner as to be concentric with the first ring portion while having a smaller diameter than the first ring portion, the inner circumferential surface thereof forming a bearing hole; and
a bearing formed between the first ring portion and the second ring portion and rotated in such a manner that the first ring portion and the second ring portion are rotated relatively to each other,
wherein a diameter of the rotor pin is equal to or greater than one tenth of an inner diameter of the bearing hole and is equal to and smaller than half of the inner diameter thereof.