| 摘要 |
PURPOSE:To enable a sealing boot of being mounted tightly at one end thereof and increase the strength and the rigidity of the open part of an external shell by integrally forming at annular flange around the external circumference of the open end part of said shell. CONSTITUTION:A flange 3 which provides a means of joining with another member is formed at one end of an external member 1. An external shell 2 which provides a means for accepting an internal member is formed at the other end of said member 1. An annular flange 8 is integrally formed around the external circumference of the open end part of the external shell 2. The flange 8 has both an annular projection 9 and an annular smoothened face 10 formed successively on the external circumference thereof. Such formation is not only suitable in mounting a sealing boot but also rather effective in reinforcement of the open end of the external shell 2 which has potential problem in strength or rigidity. |
