<P>PROBLEM TO BE SOLVED: To provide an insert tool for an insert tube used when the insert tube for drain of a water branch device is inserted to a hose. ??<P>SOLUTION: Engagement parts 13b, 14b engaged with each other are formed on opposing sides of a clamp 12 of a liquid branch device 10. The insert tool 1 for the insert tube, used when the insert tube 15 for drain planted on a concave side between Y-shaped parts which can be inserted to each other in a nested manner is inserted to the hose H, is provided with: a hose holding recess 2 which has hose nipping faces 2b having a gap smaller than the diameter of the hose H and into which the hose H is pushed; Y-shaped part expansion parts 3 formed outside the hose nipping faces 2b of the hose holding recess 2 and having slant faces 3a with a gap expanded as separated from an opening part 2a of the hose holding recess 2; and Y-shaped part guide parts 4 formed on the outer sides in the width direction of the slant faces 3a of the Y-shaped part expansion parts 3 and having guide faces 4a for guiding lateral faces in the width direction of the Y-shaped parts. ??<P>COPYRIGHT: (C)2010,JPO&INPIT ??
