JPS6426428A - Insertion technique into pipe path of flat folded and shape retaining tube - Google Patents

Abstract

PURPOSE:To insert through even a pipe path having a plurality of bend parts without having a danger such as a break by improving passability of a bent part of the pipe path, by a method herein a spring wore rod is kept inserted beforehand into a flat folded and shape retaining tube which is made of synthetic resin and has flexibility, extending over the whole length of the tube. CONSTITUTION:A flat, folded and shape retaining tube 1 having flexibility is obtained by performing pipe, which is, for example, folded in two further. A belt-like spring wire rod 2 is inserted into a folded part 12 extended over the whole length and the tips of the spring wire rod 2 and tube 1 are connected with a guide ball 3. At the time of passing of the tube 1, which has been inserted within the pipe path (a) under the guidance of the guide ball 3, through the bent part a1 of the pipe path (a), the tube 1 is apt to generate a sharp bent, the spring wire rod 2 is inserted into the tube 1 breaking and bending tendency of the tube 1 at the bent part a1 hardly exists, and the tube 1 passes through the bent part a1 while bending smooth along the bent part a1. In addition, the tube 1 can be inserted through without hindrance by using, for example, pressing-in and traction by a rope 4 jointly.