| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform bending having a small currenture radius of a polyolefin pipe without a mechanical coupling and to perform free deformation of the polyolefin pipe during the occurrence of an earthquake. SOLUTION: A pipe 12 formed of polyolefin resin is curved along a bent guide 14 curved with a given curvature of radius. A cover 18 is mounted on the two end parts of a bent guide 14 by slide block 20 and the pipe 12 is fixed at the bent guide 14. In which case, a bent part with a small radius is formed at the pipe 12 to effect holding. Further, when an external force is exerted on the slit 20b part of the slide block 20 during the occurrence of estimated earthquake, the slit 20 part of the slide block 20 is separated and the pipe 12 is released from fixing at the bent guide 14.</p> |
