| 摘要 |
<p>PURPOSE: To incline a rotation part within a predetermined range instead of a simple structure by a method wherein a plastic journal bearing etc., is provided in place of a ball bearing. CONSTITUTION: A pinch roller assembly 30 is provided on a support arm 27, comprising a support shaft 21 of the assembly, a plastic journal bearing of sliding bearing means 22, a cushion member 23, and cylindrical rotation parts 24, 25, 26. The sliding bearing means 22 are rotatably supported with respect to the support shaft 21 having a small diameter part 21a and a large diameter part 21b different from each other, and comes into sliding contact with each other. Further, the sliding bearing means 22 have a groove 28 along the outer circumferential face, and the cushion member 23 of much softer rubber than the roller 24 of high elastic rubber is engaged with this groove 28, and the cylindrical rotation parts 24, 25, 26 can be inclined with respect to the support shaft 21.</p> |
