COUPLER FOR WIRE PASSING ROD

摘要

PROBLEM TO BE SOLVED: To prevent deterioration of restoration force of anchor levers which are elastically opened and closed. SOLUTION: A coupler 14B for a wire passing rod is engaged with a hook fixed on a tip head of a wire passing rod of one side which is inserted in an installed cable tube from one end side, and fixed to the tip head of a wire passing rod of the other side which is inserted from the other end side of the tube. The coupler 14B for a wire passing rod is provided with right and left arm parts 15B which are fixed to a tip head and stretched foward, a pair of anchor levers 17B (only one side is shown in figure) which are double hinged and can be opened and closed, and a torsion spring 30 which energizes the anchor levers 17B to the outside. From the mechanism of the torsion spring 30 which generates spring effect, resiliency of the torsion spring 30 is not deteriorated when holes 31 of the anchor levers 17B are filled with mud or the like. Thereby restoring force of the anchor levers 17B is not deteriorated.