Clutch unit

摘要

A clutch unit includes lever-side clutch portion for controlling transmission and interruption of rotational torque to an output side through lever operation and a brake-side clutch portion for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side. The lever-side clutch portion has an outer centering spring provided between a lever-side outer ring to be rotated through the lever operation and a cover restricted in rotation, for accumulating an elastic force obtained by torque input from the lever-side outer ring and for restoring the lever-side outer ring to a neutral state with the accumulated elastic force through releasing of the torque input from the input-side member. The outer centering spring has a band plate-like spring member having a C-shape.

主权项

1. A clutch unit, comprising:
a lever-side clutch portion provided on an input side, for controlling transmission and interruption of rotational torque to an output side through a lever operation; and a brake-side clutch portion provided on the output side, for transmitting torque input from the lever-side clutch portion to the output side and for interrupting torque reversely input from the output side, wherein: the lever-side clutch portion comprises:
an input-side member to be rotated through the lever operation;a stationary-side member restricted in rotation; andan elastic member provided between the input-side member and the stationary-side member, for accumulating an elastic force obtained by torque input from the input-side member and for restoring the input-side member to a neutral state with the accumulated elastic force through releasing of the torque input from the input-side member,the elastic member comprising a band spring member having a C-shape and a pair of lock portions formed by bending both ends thereof to a radially outer side, andthe stationary-side member comprising an inclined portion which abuts on the elastic member and swells to an elastic member side; under a state in which the elastic member is assembled, an inner diameter of the elastic member is arranged on an outer side of an outermost diameter of the inclined portion of the stationary-side member; and under the state in which the elastic member is assembled, a distance between an inner diameter of a region of the elastic member, which is displaced by 180° from the pair of lock portions, and the outermost diameter of the inclined portion of the stationary-side member is set larger than a distance between an inner diameter of a region of the elastic member, which is displaced by 90° from the pair of lock portions, and the outermost diameter of the inclined portion of the stationary-side member.