| 摘要 |
PURPOSE: To achieve perfect hermetic holding by providing a nozzle assembly with tongue and groove means which consist of a holding insert, a nozzle element and first and second seal members and which engage the first seal member and a seal surface existing outward in the radial direction of the insert with each other. CONSTITUTION: The nozzle assembly consists of the holding insert 18, the nozzle element 20, the first seal member 22 and the second seal member 24. The holding insert 18 is removably fixed to a release aperture 12 of a housing structure 14 and is provided with a through-release passage 40. The nozzle element 20 positioned within the radial release aperture 12 behind the insert 18 is provided with a release orifice 56. A member 22 made of a deformable material grips the element 20 by enclosing the same. Further, an elastic sealing material member 24 is fitted between the radial outside surface of the member 22 and a wall surface 59. The assembly has the tongue and groove means which engage the member 22 and the seal surface 50 existing outward in the radial direction of the insert 18 with each other to limit the relative motion of the insert and the member 22. |
