F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 43/00 (2006.01) F16B 33/00 (2006.01) F16B 35/06 (2006.01)
Patent
CA 2660574
A screw (60) is described, having a shaft (32) and a head (66) for fastening a component onto a substructure by means of tightly pressing a conical sealing disk (50) onto the component. The screw head (66) is configured at the bottom (64) thereof around the shaft (32) as a cone that is tapered in the direction of the top (68) of the screw head (66). The cone angle of the conical sealing disk (50) measured against a perpendicular line to the disk axis is equal to, or larger than the cone angle (alpha) of the screw head (66) measured against a perpendicular line to the screw axis. When the screw (60) is tightened, the conical bottom (64) of the screw head (66) and the conical top (58) of the sealing disk (50) are in mutual surface contact with each other. This maintains a sealing connection. By means of the conical configuration of the bottom (64) of the screw head (66) the so-called ~cupping~ of the sealing disk (50) is prevented when the screw (60) is tightened.
L'invention décrit une vis (60) comprenant une tige (32) et une tête (66) pour fixer un composant sur une structure porteuse en serrant une rondelle d'étanchéité conique (50) sur le composant. La tête de vis (66) présente sur sa face inférieure (64) autour de la tige (32) une forme de cône qui s'effile en direction de la face supérieure (68) de la tête de vis (66). L'angle du cône de la rondelle d'étanchéité conique (50) mesuré par rapport à une ligne perpendiculaire à l'axe de la rondelle est identique ou supérieur à l'angle du cône (alpha) de la tête de vis (66) mesuré par rapport à une ligne perpendiculaire à l'axe de la vis. Lorsque la vis (60) est serrée, la face inférieure conique (64) de la tête de vis (66) et la face supérieure conique (58) de la rondelle d'étanchéité (50) sont en contact mutuel. Une liaison étanche est ainsi maintenue. La conception de forme conique de la face inférieure (64) de la tête de vis (66) permet d'éviter ce qu'on appelle le <=bombage>= de la rondelle d'étanchéité (50) lors du serrage de la vis (60).
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