| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a core wire from being twisted by a method wherein a holding member for fixing the core wire to adjust pressure of fluid, a connecting member capable of drawing the holding member along with a refraction of a spacer and a feeder screw for threadably engaging with the spacer are provided. SOLUTION: As a feeder screw 6 is rotated in a rightward direction with a force applied from outside of a casing, a spacer 4 advances and in turn when the screw is rotated in a leftward direction, the spacer 4 is retracted. As the spacer 4 advances forward, the spacer 4 advances the core wire 2 and the holding member 3 while their contacted surface being pushed by it. With such an arrangement as above, the core wire 2 advances in a feeding-in pipe and a feeding-out pipe. As the spacer 4 is retracted, a first engaging end 5a and a second engaging end 5b are engaged to each other, a third engaging end 5c and the holding member 3 are engaged to each other, and the core wire 2 and the holding member 3 are retracted as the spacer 4 is retracted. With such an arrangement as above, the core wire 2 is retracted within the feeding-in pipe and the feeding-out pipe. The connecting member 5 is a cylindrical member which encloses the feeding screw 6 and has a through-pass hole through which the feeding screw 6 may pass.</p> |
