| 摘要 |
<p>PROBLEM TO BE SOLVED: To connect a resin piping assembled in a factory to a metal pipe in the construction field by inserting a metal connecting member, and supporting a bolt to be directly threaded to the metal pipe or a fitting joint of the metal tube with the connecting member so that it can be only rotated. SOLUTION: A metal connecting member 16 is formed with a step-like outside, and a small diameter part 16a thereof at a tip of the step-like outside is formed with two peripheral grooves 18 crossing a pipe axis, and an O-ring 19 is fitted in each peripheral groove 18, and a large diameter part 16b of the connecting member 16 is formed with a peripheral groove 21 similarly crossing the pipe axis. A screw 23 integrally formed with a nut 22 has a male screw in the periphery thereof, and the screw 23 is fitted on the metal connecting member 16 so that the inside thereof is combined with the connecting member 16. Pins 24 are threaded to the nut 22 with a constant space in the circumferential direction at several positions, and each projecting end is fitted in the peripheral groove 21. With this structure, the screw 23 is supported by the connecting member 16 so that it can be only rotated. The screw 23 can be connected to the pipe end by rotating the nut 22.</p> |
