FJEDER FOR FRIHJULSANORDNING

摘要

Spring 1 having principal undulations 2 inside which are formed windows 5 for the passage of cams 10, and secondary undulations 4. The cams are wedged between the edges 6 and 7 of these windows. The swinging of the cams is caused by the action of the swinging tongue 15 having a flat portion 17. An improvement in the synchronization of movement of the cams and a reduction in the wear of the device is obtained.