| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably support a protecting pipe inside a running element, even when the diameter of a running element opening dose cannot have sufficient margin, and prevent the protective pipe from being detached due to aging deteri oration. SOLUTION: A plurality of leaf springs widened and opened downwardly are disposed in a front region of the protective pipe, while a screw stripe for mounting metal fittings for fixing to a back region of the protective pipe located outside the running element, is molded. There may be cases in which the leaf springs are disposed on a ring member, which can be positioned by the screw stripe molded the distal end of the protective pipe.</p> |
