To provide a clutch device applied to a use that, when an active side is desired to be driven in the clockwise direction, a passive side is able to be linked for rotational outputting, and when the passive side is driven in the counterclockwise direction, the active side is not able to be linked.

The clutch device is actuated by torque and has operating characteristics that is controlled to perform operations of coupling or disengaging with driving torque. In the device, a relay transmission structure assembly 104 is installed between a rotary prime motive end 101 and a clutch structure 1052 of an output-end 102 installed at the output end 102, the relay transmission structure assembly 104 is installed with a relay coupling structure 204 having an active side of the relay coupling structure and a passive side of the relay coupling structure, and the prime motive end 101 is provided with a limiting structure 115 and thereby limiting relative positions of the relay transmission structure assembly 104 and the prime motive end 101.