| 摘要 |
PURPOSE: To prevent the permeation of liquid and ensure easy coupling by storing a second conduit in a space between the inner face of a coupling element having a hook member on the outer periphery to be engaged with the collar of a first conduit and the outer face of a holding element. CONSTITUTION: A hook element 9 extending outward is provided at the rear end 5 of a coupling element 2 and adapted to be engaged with the collar 12 at the rear end 3a of a pipe 3. A hose 1 is inserted at its rear side 5 into the coupling element 2 and a cylindrical holding element 18 is inserted at its rear side 19 into the hose 1 at its front end 6. The front end 22 of the cylindrical holding element 18 is protruded outside the hose 1 and the coupling element 2 and entered into the pipe 3 at its end 3a to form an annular gap together with the pipe 3. |
