COPYING MACHINE, FACSIMILE, AND CLUTCH DEVICE FOR TRANSMITTING DRIVE FORCE TO MEMBER TO BE TRANSMITTED, SUCH AS PAPER FEED ROLLER IN PRINTER, OR THE LIKE

摘要

PROBLEM TO BE SOLVED: To reliably create the non-transmission state of drive force even if the drive force at the input side is not large so much in a clutch device.;SOLUTION: A contact surface 41c formed at a sub connection section 41 in an inner sleeve body 4 is positioned at nearly the same level as a contact surface 50c formed at a sub connection section 50 of an outer sleeve body 5 at a position in which the inner sleeve body 4 has moved against the energization of a first coil spring 8. An outermost cylinder 6 for stopping the rotation of the outer sleeve body 5 by the operation of damping force is arranged outside the outer sleeve body 5. A second coil spring 9 is provided between the outer sleeve body 5 and the outermost cylinder 6, energization force is accumulated, which allows the second coil spring 9 to inversely rotate the outer sleeve body 5 by the accumulated energization operation of the outer sleeve 5 that is rotated in the forward direction in a fixed range when the damping force is operated on the outermost cylinder 6 and stops the rotation.;COPYRIGHT: (C)2005,JPO&NCIPI