Vehicle rollover protection roof geometry and structure

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 21/13 (2006.01) B62D 25/06 (2006.01)

Patent

CA 2735042

A vehicle geometry for rollover crush resistance is created by determining a center of mass (28) providing a roll axis and establishing a roof line contact surface (53) spaced from the center of mass by a hoop radius (52) substantially equal to a major radius of roll contact from the roll axis. As a first embodiment, the roof line contact surface is established in original designs for vehicles as a monocoque structure. As a second embodiment, provided as an original equipment manufacture (OEM) item or retrofit structural assembly, an arcuate member shaped as a byte of the hoop radius is employed and is mounted between two side rails with additional structural supports for the arcuate member on a nominally flat roofline.

Une géométrie dun véhicule est créée pour résister au renversement en déterminant un centre de masse (28) fournissant un axe de roulis et établissant une surface de contact de ligne de toit (53) espacée du centre de masse par un rayon de cercle (52) sensiblement égal à un rayon majeur de contact de roulis depuis laxe de roulis. Comme premier mode de réalisation, la surface de contact de ligne de toit est établie dans les modèles originaux pour des véhicules sous la forme dune structure monocoque. Dans un second mode de réalisation, utilisé comme un article de fabrication déquipement dorigine (OEM) ou un ensemble structurel de modernisation, un élément arqué en forme de rayon de cercle est utilisé et monté entre deux rails latéraux, avec des supports structurels supplémentaires pour lélément arqué, sur une ligne de toit sensiblement plane.

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