B - Operations – Transporting – 60 – J
Patent
B - Operations, Transporting
60
J
B60J 7/00 (2006.01) B60R 99/00 (2009.01) B60K 37/00 (2006.01) B60N 2/00 (2006.01) B60N 3/00 (2006.01) B62D 29/00 (2006.01)
Patent
CA 2406701
An expansible foaming reinforcing member for reinforcing a hollow structural member of an automobile, aircraft, boat, etc. is provided. The reinforcing member (10) includes a synthetic, resin-based expansible reinforcing material (12) secured to a carrier (14) which maintains the reinforcing member at the desired location within the structural member until thermal expansion. The reinforcing material (12) 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 reinforcing material (12) of the inventive reinforcing member (10) comprises a plurality of spaced-apart fins or ribs (16a-g). During heat activation, heated air can travel between the ribs (16a-g), thus allowing a greater surface area of the reinforcing material (12) to be exposed to heat leading to improved expansion. The ribs (16a-g) can be configured to a shape corresponding to the cross-section of the cavity of the structural member, thus permitting the reinforcing member (10) to be inserted into small, irregular shaped cavities.
L'invention concerne un élément de renforcement moussant expansible servant à renforcer un élément structurel creux d'une automobile, d'un avion, d'un bateau, etc. Cet élément de renforcement (10) contient une matière de renforcement expansible synthétique à base de résine (12) fixée sur un porteur (14) qui maintient ledit élément de renforcement à un emplacement souhaité à l'intérieur de l'élément structurel jusqu'à expansion thermique. La matière de renforcement (12) est formée à partir d'une composition expansible thermiquement qui a de préférence une température d'expansion similaire aux températures obtenues à des étapes spécifiques d'un processus de fabrication particulier (par exemple, telle que la température à laquelle la cuisson de la peinture est réalisée ou à laquelle une étape de cuisson de poudre est effectuée dans le processus de fabrication automobile). La matière de renforcement (12) de l'élément de renforcement (10) comprend plusieurs ailettes séparées ou des nervures (16a-g). Pendant l'activation thermique, l'air chauffé peut circuler entre les nervures (16a-g), ce qui permet d'exposer une plus grande zone superficielle de la matière de renforcement (12) afin d'améliorer l'expansion. Les nervures (16a-g) peuvent se présenter sous une forme correspondant à la section transversale de la cavité de l'élément structurel, ce qui permet l'insertion de l'élément de renforcement (10) dans des cavités petites, de forme irrégulière.
Chang Chin-Jui
Fitzgerald Gerald E.
Stratman Randy
Gowling Lafleur Henderson Llp
Sika Corporation
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