Snowmobile frame

B - Operations – Transporting – 62 – M

Patent

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Details

B62M 27/02 (2006.01)

Patent

CA 2745048

A snowmobile frame (106) is described, with a tunnel (108) having an inverted U-shape. An engine cradle (110) is attached to a forward portion of the tunnel. A suspension assembly (112) is disposed forwardly of the engine cradle. At least one support member (142) supports the suspension assembly on the engine cradle. The at least one support member forms a crumple zone between the suspension assembly and the engine cradle. The at least one support member resists plastic deformation in response to the first predetermined force exerted on the suspension assembly. The at least one support member undergoes plastic deformation in response to a second predetermined force being exerted on the suspension assembly. The second predetermined force is greater in magnitude than the first predetermined force. The tunnel resists plastic deformation in response to the second predetermined force.

La présente invention concerne un châssis de motoneige (106), avec un tunnel (108) ayant une forme en U inversé. Un berceau de moteur (110) est fixé à une partie avant du tunnel. Un ensemble suspension (112) est disposé vers lavant du berceau de moteur. Au moins un élément de support (142) soutient lensemble suspension sur le berceau de moteur. Le ou les éléments de support forment une zone déformable entre lensemble suspension et le berceau de moteur. Le ou les éléments de support résistent à la déformation plastique en réponse à une première force prédéterminée exercée sur lensemble suspension. Le ou les éléments de support sont soumis à une déformation plastique lorsquune seconde force prédéterminée est exercée sur lensemble suspension. La seconde force prédéterminée est damplitude plus importante que la première force prédéterminée. Le tunnel résiste à la déformation plastique en réponse à la seconde force prédéterminée.

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