To increase productivity, allow the accurate fixing of an auxiliary nut, and allow the assurance of the reliability of the auxiliary nut by threading the auxiliary nut to a fitting section.
This fitting section fastening structure for a hose assembly comprises a hollow cylindrical fitting section 2 having a hooking flange 1 formed at the end part thereof, a nut 3 having one side rotatably supported on the hooking flange 1 of the fitting section 2 and the other side joined to a mating part supplying fluid, and a coupling 5 radially crimping and fixing a hose 4 fitted to the other end of the fitting section 2. The fitting section fastening structure also comprises the auxiliary nut 9 positioned between the fitting section 2 and the coupling 5, having a female screw 8 corresponding to a male screw formed on the outer wall of the fitting section 2 formed in the inner wall thereof and threaded with the male screw and having an annular groove 9a allowing the coupling 5 to be fixed to the outer wall.
Hideo Shimizu
Yuichi Takagi
Kazuki Hidaka
Tomoko Watanabe
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