Vehicle seat assembly having a cradle seat back

B - Operations – Transporting – 60 – N

Patent

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Details

B60N 2/68 (2006.01) B60N 2/48 (2006.01) B60N 2/66 (2006.01)

Patent

CA 2401574

A seat assembly for supporting a seat occupant in an automotive vehicle comprising a seat cushion for support the seat occupant on the seat assembly (10) and a seat back (16) extending longitudinally between a lower portion operatively coupled to the seat cushion and an upper portion for supporting the seat occupant in an upright position. The seat back (16) includes an outer peripheral frame member and an inner occupant support frame operatively connected and supported by the outer peripheral frame member and movable from an occupant support position to an impact displacement position extending rearwardly of the outer peripheral frame member. A displaceable connection member operatively interconnects the inner occupant support frame in the occupant support position during normal seat occupant use and for providing movement of the inner occupant support frame to the impact displacement position in response to a predetermined impact load exerted on the seat assembly (10).

L'invention concerne un ensemble siège de soutien pour occupant de véhicule à moteur, comprenant un coussin de siège qui tient lieu de support pour l'occupant assis sur l'ensemble siège (10), et un dossier de siège (16) qui s'étend longitudinalement entre une partie inférieure couplée opérationnelle au coussin, et une partie supérieure qui tient lieu de support pour l'occupant, dans une position verticale. Le dossier (16) comporte un cadre périphérique externe, mais aussi un cadre interne support pour l'occupant, relié opérationnel au cadre externe et soutenu par lui, mobile entre une position de soutien et une position de déplacement à l'impact, en extension vers l'arrière par rapport au cadre externe. Un lien mobile assure le couplage opérationnel entre le cadre interne et le cadre externe, maintenant le cadre interne dans la position support à l'utilisation normale et assurant le passage du cadre vers la position de déplacement à l'impact, suite à une force d'impact exercée sur l'ensemble siège (10).

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