| 摘要 |
<p>The forward and reverse movement of the wire guide part (101) in the axial direction of the wire guide part (101) is regulated by contacting a holding part (45a) disposed on a front ring segment (31a) and a base-holding part (45b) that is the holding part (45) disposed on a base ring segment (31b). The wire guide part (101) is also held by an intermediate holding part (45c), the front-holding part (45a) and the base-holding part (45b) so that the wire guide part can be inserted and moved back and forth through the intermediate holding part (45c), the front-holding part (45a) and the base-holding part (45b) in the axial direction of the holding part (45). The wire guide part (101) has elastic force.</p> |
