Clamping ring for mounting a gas generator cartridge

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 2/00 (2006.01) B60R 21/20 (2006.01)

Patent

CA 2560912

A clamping ring (10) is used to mount an air bag gas generator cartridge on a support plate. A tensioning ear (11) is formed in the clamping ring. Further, a wave (15) is formed in the ring to increase the holding force between the ring and the cartridge. The wave (15) consists of two convex arches (16) projecting outward from the ring (10) and an inward convex arch (17) therebetween, the apex of the inward arch being at least tangential to the circle defined by the remaining portions of the ring (10) in the initial condition of the ring. This type of clamping ring mounting is capable of withstanding torques between the cartridge and the support plate of well above 10 Nm.

La présente invention concerne un anneau de serrage (10) utilisé pour fixer une cartouche génératrice de gaz pour airbag, à une plaque de retenue, ledit anneau de serrage présentant un élément de serrage tubulaire (11) moulé dans l'anneau, et un arbre (15) qui augmente la force de retenue entre l'anneau et la cartouche et qui est également moulé dans l'anneau. L'arbre (15) consiste en deux sections convexes (16) qui dépassent de l'anneau (10) vers l'extérieur, entre lesquelles se trouve une section en retrait (17) recourbée de façon convexe vers l'intérieur et dont le sommet est au moins tangent à l'arc de cercle défini par les parties restantes de l'anneau, dans l'état initial de l'anneau (10). Une fixation par anneau de serrage de ce type permet d'obtenir une résistance à des moments de torsion entre la cartouche et la plaque de retenue, significativement supérieurs à 10 Nm.

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