Patent ID: 8734142

Claim:
A rotation preventing member of a scroll compressor, comprising: a rotation preventing member disposed between a fixed member and a movable member, and configured to prevent a rotation of the movable member, and configured to allow the movable member to perform an orbital motion with respect to the fixed member, wherein the rotation preventing member comprises: a ring portion formed in a ring shape; one or more first sliding surfaces formed on an inner circumferential surface or an outer circumferential surface of the ring portion in a first direction, and slidably coupled to the movable member; and one or more second sliding surface formed, in a second direction, on one of the inner circumferential surface and the outer circumferential surface of the ring portion where the first sliding surface is not formed, and slidably coupled to the fixed member, wherein a virtual line extending from the first sliding surface and a virtual line extending from the second sliding surface are formed to cross each other, wherein each of the first sliding surface and the second sliding surface is formed in plurality, wherein the plurality of first sliding surfaces are formed in parallel on circumferential surfaces symmetrical to each other based on a center line through the ring portion in the first direction, and the plurality of second sliding surfaces are formed in parallel on circumferential surfaces symmetrical to each other based on a center line through the ring portion in the second direction, and wherein the ring portion has a first thrust surface contacting the fixed member, and a second thrust surface formed at an opposite side to the first thrust surface and contacting the movable member, the first thrust surface and the second thrust surface are formed to be flat.