| 摘要 |
PROBLEM TO BE SOLVED: To ensure complete fastening of a clamp and stable seal function. SOLUTION: An outer fitting part 31 is arranged on a first pipe 27, a window part 33 is arranged, an inner fitting part 37 is arranged on a second pipe 35, a second inclining part 39 is arranged, the groove part 43 of a circumferential direction is arranged, a nearly ring shaped cramp 45 fastened by fastening means is arranged. A cam projection part 47 is arranged by forming in such a constitution that an inclining cam surface 47a is arranged on the cramp 45, a corner part 43a is push-pressed by the inclining cum surface 47a, the inner fitting part 37 is moved to a fitting direction, and a clearance between both inclining parts 29, 39 is narrowed. A nearly ring shaped seal material 51 interposed between both inclining parts 29, 39 is arranged. It is thus possible to convert fastening force of the cramp 45 into force of a direction which the seal material 51 is broken by the inclining cam surface 47a, and also it is possible to ensure assured axial force and stable seal function. |
