To prevent problems such as defective sealing, drainage trouble, or the like by preventing oblique insertion of another piping into a socket of a drain pipe.
In a composition of the drain pipe 20, the socket 22 provided with a sealing material 26 is provided on an end, and the other piping 30 is connected in a watertight state to the socket 22 by the workings of the sealing material 26 by inserting a straight pipe part of the other piping 30 into the socket 22. The sealing material 26 is composed of a cylindrical circumference part 26t fit in an inner side of the socket 22, and a seal body part 26x protruding inward from the circumference part 26t and capable of adhering closely to the straight pipe part of the other piping 30. An inner flange part 22f covering a tip face 26f of the circumference part 26t of the sealing material 26 is formed on a tip of the socket 22, and an inner diameter size of the inner flange part 22f is set at a value smaller than 1.09 times of an outer diameter size of the straight pipe part in the other piping 30.
KAKO YOZO
| JPH01269789A | 1989-10-27 | |||
| JP2002181261A | 2002-06-26 | |||
| JPS4936514U | 1974-04-01 | |||
| JPH0732281U | 1995-06-16 |
Tetsuo Fukuda
Tatsuhiko Inukai
Takashi Ishioka
Mitsuyoshi Hattori