| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a resin pipe joint improved to be excellent in assembly workability and handling properties to confirm that tightening a union nut is ended or almost ended even in a noisy work side. <P>SOLUTION: In the resin pipe joint, the union nut 2 advances by screwing a male screw 5 into a female screw 8 in a state where a tube 3 is externally fitted into an inner cylinder 4 to form a diameter-enlarged part 3A, and a diameter-enlarged change region 9 is thrust by a sealing thrusting portion 10. A means C for recognizing the end of tightening is configured in a way that as the union nut 2 is tightened and rotated just before the end of advancing by pressing a diameter-enlarged change region 9 by a sealing thrusting part 10, a hood part 19 projecting in an axial center direction and a receiving part 20, which can be brought into contact with the hood part 19 in an axial center P direction, causing bending and displacing in the axial direction of the hood 19 through the contact of the hood 19 of an axial end of the union nut 2 with the receiving part 20 which is the outer peripheral flange 1A of the joint body 1. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
