| 摘要 |
PROBLEM TO BE SOLVED: To enhance the stability of torque transmitting action of a double spring type one-way clutch.SOLUTION: An engaging convex part 7 is arranged in an inside surface of an inwardly directed flange 4 of an outer wheel 1, a double clutch spring 3 forming small diameter wound parts 3a and large diameter wound parts 3b alternately in an axial direction in an eccentric state is assembled between a cylindrical outer peripheral surface of a rotating shaft 2 and an inner peripheral surface of the outer wheel 1 configured such that the small diameter wound parts 3a elastically contact the outer peripheral surface of the rotating shaft 2, the large diameter wound part 3b elastically contact a convex arcuate face 7a of the engaging convex part 7 the outer ring 1 cross a rotating locus of the engaging convex part 7, a hook 3d of one end is locked by the outer wheel 1, thereby the large diameter wound parts 3b engage with the engaging convex part 7 in a rotating direction even in the case the large diameter wound parts can not sufficiently fasten the engaging convex part 7 and the torque transmission from the rotating shaft 2 to the outer ring 1 can be stably carried out, when the rotating shaft 2 rotates one predetermined direction and the diameters of the small diameter wound parts 3a and the large diameter wound parts 3b of the clutch spring 3 are all reduced. |
