| 摘要 |
PURPOSE: To prevent a sleeve body from being jointly rotated when a tightening nut body is tightened by the deformation of the sleeve body fitted to a pipe to be connected due to the tight pressing of a tapered wall surface of the body and a slidable ring body internally fitted to the tightening nut body to seal the outer circumferential surface of the pipe to be connected. CONSTITUTION: A sleeve body 3 is fitted to a pipe 4 to be connected, and housed over the pipe 4 to be connected and an inner cylindrical part 14 of a body 1. When a tightening nut body 2 is screwed to be tightened to a stopper (wrench receiving part) 11 of the body 1, the sleeve body 3 is deformed due to the tight pressing of each tapered wall surface of the inner circumference of the tightening nut body 2. This deformation is made so as to realize the deflection of the desired mode by setting the condition of the plastic deformation with the side end part of a joint body 1 to be same even when the friction heat is generated on the side end part of a nut body 21 of the sleeve body 3 due to the difference in the wall thickness of the sleeve body 3 and the difference in the taper angle. The outer circumferential surface of the pipe 4 to be connected is tightly pressed at each end of the sleeve body 3 to realize the sealing. |
