| 摘要 |
An expansion pipe of a sewer is provided to stand a certain degree of drooping and easily make curves by applying a limitedly expandable pipe into the sewer. An expansion pipe of a sewer comprises a pair of connecting members(20) shaped as a ring, connected with a distal end of a transfer pipe(10) on one side, and formed with inner and outer horizontal flanges(22,23) at the other side, a supporting plate ring(24) on the terminal end of the inner horizontal flange to have a square operating chamber with a draw-out port(25), and a reverse-L type operating ring and a spring(28) inserted into the operating chamber; a connecting pipe(30) disposed between the connecting members and formed with a supporting flange(32) on the outer peripheral surface of both distal ends of the body; a pair of corrugated pipes(40) disposed between the connecting member and the connecting pipe to be fitted into the inner horizontal flange on one distal end and to be fitted into the distal end of the connecting pipe on the other end; and a pair of elastic covers(50) formed like a saw-teeth pipe to cover the corrugated pipe to be hung on the supporting flange formed to the connecting pipe on one distal end and to be connected/fixed with the distal end of an operating ring(26) on the other distal end. |
