| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent slipping of rollers in a guide unit allowing the relative movement of a support frame supported to a body frame, and a roller support body for supporting a contact roller. <P>SOLUTION: The roller unit 25 includes a first guide member 30 fixed to the support frame supported to the body frame; a second guide member 31 fixed to a support plate for supporting the contact roller; the rollers 32a, 32b held in spaces formed by V-grooves 30a, 31a of the guide members 30, 31; and a roller holding implement 33 connecting the rollers 32a, 32b to each other. The outer peripheral surface of the roller 32a1 which is one of the rollers 32a is formed with a plurality of protrusions 41 along the circumferential direction. Corresponding to these protrusions, a plurality of recesses 42 fittable to the corresponding protrusions 41 are formed at the contact surfaces of the V-grooves 30a, 31a with the rollers 32a, along the longitudinal direction of the guide members 30, 31. <P>COPYRIGHT: (C)2012,JPO&INPIT |
