| 摘要 |
A coupling structure of a plastic pipe for the protecting of the leakage of the fluid is provided to completely prevent leakage of the fluid flowing in the plastic pipe by fusing of the heat welding ring and compression of the compression band. A coupling structure of the plastic pipe for the protecting of the leakage of the fluid comprises an extended pipe position(111) is formed in the end part of the plastic pipe(110); a ring insert groove(113) is formed according to the inner surface of the expanding portion of the plastic pipe; a heat welding ring(130) in which the hotwire(131) is equipped is inserted in the ring insert groove; a heat welding ring is fused when the power is supplied to the hotwire of the heat welding ring; and a groove is built up in the ring insert groove and the protrusion is molded in the heat welding ring. The heat welding ring is not broken away from the ring insert groove. |
