Switching transmission wheel, self-winding mechanism, watch movement and watch

摘要

PROBLEM TO BE SOLVED: To reduce a rotational load and improve hoisting performance. SOLUTION: A rotating shaft portion 65 having a switching transmission kana 73, a switching wheel 61 rotating by power transmitted from a power source, a rotating plate 62 combined with the rotating shaft portion, and a rotating plate swingably. A switching claw portion 63 is provided, and the switching wheel includes a switching tooth portion 102 having an engaging surface 102a facing one side in the circumferential direction and an inclined surface 102b facing the other side in the circumferential direction. The switching claw portion includes a switching arm portion 122 extending from the second axis toward one side in the circumferential direction and an engaging portion 124 engaging with the engaging surface from one side in the circumferential direction. Provides a switching transmission wheel 60 urged by a spring member 140. [Selection diagram] Fig. 4