| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide coupling structure to eliminate a need for positioning of the rib of a pipe with a rib and the groove of a coupling, in a work to interconnect a main pipe being the pipe with a rib and a mounting pipe. SOLUTION: A coupling 4 comprises a flexible coupling body 5, a elastic cut-off seat 6, and a rigid fastening cover 7. The coupling body 5 is provided with a cylindrical part 5a and a saddle part 5b. The coupling body 5 is arranged between the drilling part 2a of a pipe 2 with a rib and a mounting part 3. The cylindrical part 5a is adhered to the periphery of a mounting pipe 3, the cylindrical part 5a is adhered to the periphery of the mounting pipe 3, and the cylinder part 5a is arranged at the drilling part 2a. A saddle part 5b is extended from the cylindrical part 5a to a position above an annular rib 2 on the surface of the drilling part 2a, and the elastic cut-off seat 6 is arranged between the saddle part 5b and the annular rib 2b. The whole periphery of the annular rib 2b is covered with the elastic cut-off seat 6, the saddle part 5b and the elastic cut-off seat 6 are fastened from an outer periphery by the fastening cover 7, and the elastic cut-off seat 6 is adhered to the annular rib 2b.</p> |
