| 摘要 |
PURPOSE:To obtain a structure, which is short in its axial length, by juxtaposing NO.1 spring, which energizes a cam-follower toward a cam, and NO.2 spring, which connects a clutch in a resilient manner to the cam-follower in the axial direction. CONSTITUTION:A cam-follower 16 is pressed against a cam surface 15b of a cam 15 by means of a coil spring 18, whose one end is locked to a spline 11a via a clip 23. When a wheel shaft 1 is driven to rotate, the cam-follower 16 is pushed and moved toward the clutch 14 side by means of the cam surface 15b of the cam 15 which is given braking torque at the early stage of the rotation of the shaft 1. On the other hand, the cam-follower 16 is connected in a resilient manner to a clutch 14 in the axial direction by means of a spring coil 19 that expands or contracts in the axial direction. The coil spring 19 is arranged in a concentric manner with a coil spring 18. One end of the spring coil 19 is fixed to the clutch 14 while the other end is fixed to the cam-follower 16. |
