| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping connection tool capable of preventing breakage while improving production efficiency and so on.SOLUTION: A piping connection tool includes a connection tool body 2 provided with a flange 25 at a rear-end outer periphery of an insertion pipe part 21, and a cap nut 3 provided with a flange restraint piece 35 projecting inward at a front-end inner periphery of a nut body 31, the flange restraint piece 35 restraining the flange 25 while the insertion pipe 21 is inserted into and arranged in an insertion hole provided in an inner periphery of the flange restraint piece 35. The connection tool body 2 is formed of an integrated molding of hard synthetic resin. An inside corner part 26 between an outer peripheral surface of the insertion pipe part 21 of the connection tool body 2 and the front of the flange 25 is formed into a curved surface 27 of 1 mm or larger in radius of curvature. A beveled part 37 is formed at an outside corner part 36 between an inner peripheral end face of the flange restraint piece 35 of the cap nut 3 and the rear of the flange restraint piece. |
