REMOVAL PREVENTING DEVICE OF PIPE JOINT PART

摘要

PROBLEM TO BE SOLVED: To reduce the manufacturing cost and the weight while securing the allowance for biting in and moving a coming-off preventive member inward in the radial direction of the pipe to the maximum bite-in position by rational reconstruction of the wall of the pressing ring formed for preventing coming-off movement to the removal side from the socket part of the coming-off preventive member. SOLUTION: The wall part 4B preventing coming-off movement to the removal side from the socket part 1 of the coming-off preventive member 7 is successively provided to the pressing ring 4 fixed and connected to the socket pipe part 1 in the state of externally placing to the spigot pipe part 2. A void part S which a part of the slip-out stopping member 7 can enter from the direction of the pipe axial center X, is formed between the opposite surfaces of the inside surface of the wall part 4B and the outer peripheral surface 2a of the spigot pipe part 2, and an auxiliary biting guide surface 4b which bites in and moves the coming-off preventive member 7 inward in the radial direction of the pipe along with the slide contact with the outside surface of the coming-off preventive member 7 moving to enter the void part S, is formed on the inside surface of the wall part 4B. COPYRIGHT: (C)2004,JPO