Side impact reinforcement

B - Operations – Transporting – 60 – J

Patent

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Details

B60J 7/00 (2006.01) B29C 67/00 (2006.01) B62D 21/15 (2006.01) B62D 29/00 (2006.01) E04C 3/00 (2006.01) E04C 3/30 (2006.01)

Patent

CA 2422119

An expansible reinforcer (20) for reinforcing a hollow structural member of an automobile, aircraft, boat, etc. is provided. The reinforcer is flexible/bendable and comprises a synthetic, resin-based expansible reinforcing material secured thereto. In a preferred embodiment, the reinforcer comprises a plurality of supports (22a-c) pivotally connected to one another in a train-like arrangement. The reinforcing material is formed of a thermally expansible composition which preferably has an expansion temperature similar to the temperatures achieved in specific stages of a particular manufacturing process (e.g., such as the temperature at which the paint bake or powder bake stage is carried out in the automobile manufacturing process). The inventive reinforcer is capable of being fed into the opening of a tight cavity on a structural member so as to provide uniform reinforcement of the structural member.

L'invention concerne un renfort expansible (20) destiné à renforcer un élément de structure creux d'une automobile, d'un aéronef, d'un bateau, etc. Ce renfort, souple/pliable, comprend une matière de renfort expansible synthétique à base de résine. Dans un mode de réalisation préféré, le renfort comprend plusieurs supports (22a-c) reliés pivotant les uns aux autres à la manière d'un train. La matière de renfort est constituée d'une composition thermiquement expansible, qui a, de préférence, une température d'expansion analogues aux températures obtenues dans des étapes spécifiques d'un processus de fabrication particulier (par exemple la température à laquelle on réalise la cuisson de la peinture ou de la poudre dans le processus de fabrication automobile). Le renfort, selon l'invention, peut être introduit à l'intérieur de l'ouverture d'une cavité étroite sur un élément de structure de façon à créer un renfort uniforme de l'élément de structure.

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