| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve a structure for improving rigidity of a pair of support arms constituting a rocking frame rotatably supporting an intermediate roller. <P>SOLUTION: A rotation shaft for supporting the intermediate roller 19a is a bolt 49. Front ends of both support arm parts 36a, 36b are provided with a circular through-hole and a screw hole, which are concentric mutually. A cylinder part constituting an intermediate part of the bolt 49 is inserted through the through-hole, a male thread part constituting a front end of the bolt 49 is screwed into the screw hole and is further fastened. Then, front ends of the both support arm parts 36a, 36b are joined to prevent expansion of a gap between the front ends of the both support arm parts 36a, 36b. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
