| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piping structure capable of exhibiting stable drainage performance. <P>SOLUTION: A drain pipe joint is provided with a sheath pipe and an inner pipe, and the inner pipe connecting an indoor drain pipe 106 with an outdoor drain pipe 108 is inserted through the sheath pipe passing through a foundation 100 of a building. The sheath pipe includes a first sheathe pipe part 16 and a second sheath pipe part 18 making a predetermined angle therebetween and is formed by assembling them together. The first sheathe pipe part 16 is opened indoors at one end, and the second sheath pipe part 18 is opened outdoors while being connected with the other end of the first sheath pipe part 16. The inner pipe is formed to be drawable and insertable from and in the sheath pipe by connecting a bent inner pipe part 20, a first inner pipe part 22 and a second inner pipe part 24, which are not flexible. Therefore, this inner pipe is excellent in smoothness of pipe inner surface in comparison with a flexible pipe used as an inner pipe. The inner pipe can be raised around the indoor drain pipe 106 falling by the wall and connected with the indoor drain pipe 106 by simple piping. <P>COPYRIGHT: (C)2013,JPO&INPIT |
