Inflatable tubular torso restraint system

Details Inflatable tubular torso restraint system Inflatable tubular torso restraint system

B - Operations, Transporting

60

R

B60R 21/18 (2006.01) B60R 22/18 (2006.01)

Patent

CA 2259317

A seat restraint system (110) whose torso belt (103) inflates upon impact to protect the occupants of a vehicle such as an automobile. The inflating component of the present invention is a braided tube (101) linked to a gas generator and crash sensor. When an impact is detected, the gas generator is ignited, inflating the braided tube. As the braided tube inflates, the diameter of the tube increases significantly and its length decreases significantly, due to the orientation of the fibers comprising the braided tube. The contracting tube pretensions the seat belt system by pulling any slack out of the seat belt system. The inflated structure restricts the forward motion of an occupant and distributes crash loads over a larger occupant surface area to reduce both primary and secondary injuries. In a side impact the inflated structure restricts occupant motion, distributes crash loads and provides head protection.

L'invention concerne un système (110) de harnais d'auto dont la ceinture (103) de torse gonfle en cas de choc pour protéger les occupants d'un véhicule, tel qu'une automobile. L'élément gonflant selon la présente invention est un tube tressé (101) relié à un générateur de gaz et à un détecteur de collision. En cas de détection de choc, le générateur de gaz s'allume, ce qui assure le gonflage du tube tressé. Lors de ce gonflage, le diamètre du tube augmente et sa longueur diminue de manière significative en raison de l'orientation des fibres qui le constituent. Le tube contracté exerce une pré-tension sur le système de ceinture du siège en tirant fermement sur ces ceintures. La structure ainsi gonflée limite le déplacement vers l'avant de l'occupant et répartit les charges de collision sur une plus grande surface de l'occupant pour réduire les blessures primaires et secondaires. En cas de choc latéral, la structure gonflée limite le déplacement de l'occupant, répartit les charges de collision et assure une protection de la tête.

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