| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin pipe joint enabling the coexistence of disconnection resistance and superior sealability while economically forming the joint of two parts, a joint body and a union nut. SOLUTION: This resin pipe joint includes: the fluororesin joint body 1 including an inner tube 4, a male screw 5, a peripheral groove m, and a disconnection prevention annular part 4C which is formed integrally with a straight body tube part 4B in the axial direction and folded back; and the fluororesin union nut 2 including a female screw 8 and a pressing part 10 for seal and a pressing inner peripheral part 13 for pressing a diameter-enlarged part 3A. The pressing inner peripheral part 13 is pressingly fitted onto a diameter-enlarged large-diameter part 12 into which the disconnection prevention annular part 4C is crimped from the inner peripheral surface side when the union nut 2 is tightened after a tube 3 is inserted into an inner tube 4 and the diameter-enlarged part 3A is formed. The small-diameter side end portion of a diameter-enlarged changing area 9 is pressed by the pressing part 10 for seal. COPYRIGHT: (C)2011,JPO&INPIT
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