| 摘要 |
<p>A joint mechanism characterized in that reliable sealing effect is attained, pull-out accident of connected pipe can be prevented, elongation/contraction of the connected pipe can be dealt with, and no special tool is required for installation work. An outer ring groove (3) for containing a stopper member (11) is carved in the inner circumferential wall of a joint body (1), and a stopper member inlet (4) is carved in the joint body at that position of the outer wall thereof slightly shifted toward the insertion end side from the carved position of the outer ring groove. The stopper member is twisted spirally such that it is misaligned at the opposite ends thereof, and the inner circumferential wall of the outer ring groove is formed to a tapered surface that expands from the trailing end side toward the leading end side in the inserting direction. Outer circumferential wall of the stopper member is also formed to a tapered surface that corresponds to that tapered surface, and the inner circumferential wall of the stopper member is formed substantially in parallel with the outer circumferential wall of the connected pipe and that inner circumferential wall face is roughened.</p> |
