Automotive composite structure part with specificated impact...

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 29/00 (2006.01) B62D 21/15 (2006.01)

Patent

CA 2467259

An energy management system and device (10) for use in an automotive frame, rail, or other structural component of an automotive vehicle. The frame or rail (16) having a cavity or exposed surface capable of supporting at least one member. The member (12) having an interior portion and an exterior portion with the interior portion being defined by at least one trigger or step change (20) to the geometry of the inner portion to target and direct axial bending of the system. An expandable material (14), such as a polymer-based foamable material, is disposed along the exterior portion of a member prior to final assembly of the vehicle by the vehicle manufacturer. The system is activated as the vehicle undergoes the final vehicle assembly process and paint operation which activates and transforms the expandable material to expand, bond and structurally adhere the frame rail to mange, direct, and/or absorb energy in the event of an impact to the vehicle an applied load or an external force.

L'invention concerne un système et un dispositif (10) de gestion d'énergie destiné à être utilisé dans un châssis, une poutre ou autre composant structurel d'un véhicule automobile. Le châssis ou la poutre (16) a une cavité ou une surface exposée apte à supporter au moins un élément. Cet élément (12) a une partie interne et une partie externe, la partie interne étant définie par au moins un déclencheur ou un changement progressif (20) de la géométrie de la partie interne destinés à diriger l'énergie vers des zones ciblées pour engendrer le pliage axial du système. Un matériau expansible (14), tel qu'un matériau expansible à base de polymère, est placé le long de la partie externe d'un élément avant le montage final du véhicule par le producteur d'automobiles. Le système est activé lorsque le véhicule est soumis au processus d'assemblage final et l'opération de peinture qui active et transforme le matériau expansible pour son expansion, sa liaison et son adhésion structurelle au châssis afin de gérer, de diriger et/ou d'absorber l'énergie en cas d'impact sur véhicule, de charge appliquée ou de force externe.

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