| 摘要 |
PROBLEM TO BE SOLVED: To realize a structure to certainly perform a function to transmit rotation of an input member to an output member but not to transmit rotation of the output member to the input member. SOLUTION: An input member 3a and an output member 2a are arranged on the inner diametrical side of a fixed outer ring 1a. These input member 3a and output member 2a are assembled free to slightly displace along the circumferential direction by an engagement protruded part 19 provided on the side of the input member 3a and an engagement recessed part 13 provided on the side of the output member 2a. A rotor 4 is provided between a cam surface 5a provided on an outer peripheral surface of the output member 2a and a friction surface 6a provided on an inner peripheral surface of the outer ring 1a. Each of these rotors 4 rolls at rotation of the input member 3a, and each of these rotors 4 bites in between the cam surface 5a and the friction surface 6a at rotation of the output member 2a. |
