| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily and quickly spring a new additional cable from a branch pipe to a main wiring pipe by attaching an attachment to the front end of a guide wire. SOLUTION: An attachment 1 has a base section 11, which is fixed to the front end of a wire 2 with a screw and a spherical head section 14 supported by the base section 11 through a supporting section 13 composed of a coil spring. The head section 14 is made of a sponge material, etc., and the diameter and shape of the section 14 is elastically changeable. When the attachment 1 is attached to the front end of the wire 2 and passed through a small-diameter branch pipe connected to a main wiring pipe, the head section 14 is passed through the branch pipe in a state, where the diameter of the section 14 is reduced according to the inside diameter of the branch pipe, and upon reaching the inside of the large-diameter main wiring pipe, returns to the original shape and winded in diameter.</p> |
