| 摘要 |
PROBLEM TO BE SOLVED: To provide a clutch transmitting a rotation of a driving side rotor by a driving source to a driven side rotor and allowing a rotation of the driven side rotor while preventing easy rotation of the driven side rotor in a rotation of the driven side rotor by a load. SOLUTION: The clutch 6 is composed so as to transmit torque of the driving side rotor 8 to the driven side rotor 10 by positioning a rolling element 11 by the rotation of the driving side rotor 8 in a non-holding position not held by the driven side rotor 10 and an inner circumferential face 7d of a housing 7 during the rotation of the driving side rotor 8 and engaging it to the driven side rotor 10 in a rotating direction. The clutch 6 is also composed so as to allow the rotation of the driven side rotor 10 in a state of a desired frictional force generated between the rolling element 11 and the inner circumferential face 7d of the housing 7 by positioning the rolling element 11 in a holding position held by the driven side rotor 10 and the inner circumferential face 7d of the housing 7 during the rotation of the driven side rotor 10. |
