As breaking off prevention structure of the fitting section and the sealing means sealing the opposition face-to-face

摘要

PROBLEM TO BE SOLVED: To improve sealing performance and disengagement prevention force by rationally modifying the inner peripheral surface side of a pipe.;SOLUTION: The disengagement prevention structure of the pipe joint is provided with a sealing means A for sealing a space between confronting surfaces of an outer peripheral surface 2a of an insertion pipe part 2 and a large diameter inner peripheral surface 1a of a receiving pipe part 1 to which the insertion pipe part 2 is inserted and connected, a first press-bonding means B1 for attaching an annular inner surface band 6 having a sealing elastic seal layer at least to an outer peripheral surface side across the inner peripheral surface 2b of the insertion pipe part 2 and a small diameter inner peripheral surface 1b of the receiving pipe part 1 and pushing and fixing a pipe axis X direction one end side of the inner surface band 6 to the inner peripheral surface 2b of the insertion pipe part 2, a second press-bonding means B2 for pushing and fixing the pipe axis X direction the other end side of the inner surface band 6 to the small diameter inner peripheral surface 1b of the receiving pipe part 1, and a fixing and connecting means C for fixing and connecting the both pipe parts 1 and 2 in a portion sealed by the inner peripheral surface band 6 in such a state that the relative movement to the pipe axis X direction is prevented.;COPYRIGHT: (C)2007,JPO&INPIT