OVERRUNNING CLUTCH

摘要

An overrunning clutch comprising a ratchet wheel ( 1 ) and a plurality of pawls ( 2 ) is disclosed. Each of the pawls ( 2 ) is rotationally supported on a disk member ( 5 ) by a shaft ( 3 ). The clutch is characterized by a permanent magnet ( 4 ) being fixed on the disk member ( 5 ) between the axes of the disk member ( 5 ) and the shaft ( 3 ) and facing the tail end of each pawl ( 2 ). Because each of the pawls are not driven by a spring in the clutch, the clutch could not be malfunction due to the fatigue failure of the spring in the case of frequent heavy load.