Inflatable tubular seat restraint system

Details Inflatable tubular seat restraint system Inflatable tubular seat restraint system

B - Operations, Transporting

60

R

B60R 21/18 (2006.01) B60R 21/16 (2006.01) B60R 21/26 (2006.01) B60R 22/02 (2006.01) B60R 22/18 (2006.01) B60R 22/26 (2006.01)

Patent

CA 2341509

A seat restraint system (110) whose torso belt (101t) includes an inflatable structure (101) that inflates upon impact to protect the occupants of a vehicle such as an automobile. The inflatable structure is linked to a gas generator (122) and crash sensor. When an impact above a predetermined level of severity is detected, the gas generator is ignited, inflating the inflatable structure which contracts in length as it inflates. In a preferred embodiment, the inflatable structure is a 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 contraction in length pretensions the seat belt system by pulling any slack out of the seat belts system.

L'invention concerne un système de harnais auto (110) dont la ceinture de torse (101t) comprend une structure gonflable (101) qui se gonfle sous l'effet d'un choc afin de protéger les occupants d'un véhicule tel qu'une voiture. La structure gonflable est reliée à un générateur de gaz (122) et à un détecteur d'impact. Lorsque le détecteur détecte un choc dont la gravité dépasse le niveau prédéterminé, le générateur de gaz s'allume, gonfle la structure gonflable qui se contracte en longueur à mesure qu'elle gonfle. Selon une version préférentielle, la structure gonflable est un tube tressé. A mesure que le tube tressé gonfle, son diamètre augmente considérablement et sa longueur diminue considérablement, en raison de l'orientation des fibres formant le tube. La contraction en longueur précontraint le système de harnais d'auto, éliminant ainsi tout jeu.

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