| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fluid from being leaked by making the connecting state of a pipe to a pipe joint accurately by holding the close contact state of the pipe with the joint by rigidly connecting the pipe to the joint as compared with a prior art in the connecting part of the pipe to the joint. SOLUTION: In this pipe joint structure, the pipe joint 1 having the end 2 connected to an end face 4 and formed of male threads 3 is butted to the pipe 6 having a flange 7 formed at the outermost end of the side connected to the joint 1. A pressing surface 13 is formed therein. A clamping fitment 10 having a female thread 11 is inserted into the outer periphery of the pipe 6. The fitment 10 is screw-clamped to the end 2 by the state that the surface 13 is brought into contact with the connecting surface 8 of the flange 7, and hence the joint 1 is connected to the pipe 6 by pressing the flange 7 to the surface 8. Thus, the close contact state of the joint 1 with the pipe 6 is facilitated to be held. Even when the fluid flows through a duct in which the joint 1 is connected to the pipe 6, the fluid can be prevented from being leaked from the connecting part 15 of the joint 1 to the pipe 6. COPYRIGHT: (C)2004,JPO
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