| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection structure of a pipe joint that can have both retaining performance and detaching performance for a tube body.SOLUTION: Although a radially inside part of a claw part 34B of a lock ring 34 is put in a pipe part 26, a radially outside first corner part 37 of a tip part of the claw part 34B is exposed radially outside more than an outer peripheral surface of a pipe part 26. A first corner part 37 of the claw part 34B is not in contact with a groove side wall 28B of a peripheral groove 28, so slide resistance between the claw part 34B and pipe part 26 in radially outward movement of the claw part 34B is small, and detaching performance for the pipe part 26 is therefore improved. There is no need to make a groove depth D of the peripheral groove 28 shallow so as to improve the detaching performance, a groove depth of the peripheral groove 28 needed for retaining performance of the pipe part 26 can be secured.SELECTED DRAWING: Figure 4 |
