| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform recovery rotation after drive rotation of an outer cylinder and a retainer, using a single spring. <P>SOLUTION: The clutch unit includes: an outer cylinder 18 in which drive rotation and recovery rotation from a neutral position are performed alternately; an inner cylinder 19 arranged in an inner peripheral side of the outer cylinder 18, in which only the drive rotation from the outer cylinder 18 is transferred; a roller 20 arranged between the outer cylinder 18 and the inner cylinder 19; a retainer 21 which retains the roller 20; a wedge face 18d formed in the inner peripheral side of the outer cylinder 18, and formed so that the clearance to the inner cylinder 19 becomes smaller in any direction of the circumferential direction from the maximum clearance position; a spring 22 which recovery-rotates both the outer cylinder 18 and the retainer 21 to the neutral position by accumulating energy by the drive rotation of the outer cylinder 18 and then releasing the energy; the spring 22, and a braking spring 23 which gives a rotational resistance to the rotation of the retainer 21. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
