| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To mainly prevent a joint part from getting out of place. <P>SOLUTION: A branch pipe connection member 15 is integrally provided with a main pipe contact part 22 in a partial cylindrical surface shape which can come into contact with the inner face of a main pipe to cover an insertion hole 21 bored in the main pipe, and a cylindrical branch pipe connection part 23 extending to the outside from the main pipe contact part 22 through the insertion hole 21. The branch pipe connection member 15 connects at least two division pieces 41 and 42 using a hinge shaft 43 so as to be inflected and extended so that the two division pieces can be deformed and returned to the size enough to be passed through the insertion hole 21. A joint part 44 of the two division pieces 41 and 42 is provided with at least one irregularity fitting shape part 45 which can prevent the displacement of the hinge shaft 43 in the axial direction. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
