SNOWMOBILE

摘要

A snowmobile includes a vehicle body frame including a tunnel portion extending in a vehicle front-rear direction. The tunnel portion includes a top wall made of a carbon fiber-reinforced plastic material, a left side wall made of a carbon fiber-reinforced plastic material, aright side wall made of a carbon fiber-reinforced plastic material, a left reinforcing member reinforcing the left side wall and made of a carbon fiber-reinforced plastic material, and a right reinforcing member reinforcing the right side wall and made of a carbon fiber-reinforced plastic material. A first closed cross-section is defined by the top wall, the left side wall and the left reinforcing member, and a second closed cross-section is defined by the top wall, the right side wall and the right reinforcing member.

主权项

1. A snowmobile comprising:
an engine including a crankshaft; a driving shaft rotatable together with the crankshaft; an endless track belt drivable by the driving shaft; and a vehicle body frame including a tunnel portion located above the track belt and extending in a vehicle front-rear direction, the vehicle body supporting the engine; wherein the tunnel portion includes a top wall located above the track belt and made of a carbon fiber-reinforced plastic material, a left side wall extending downward from a left end of the top wall, located to the left of the track belt and made of a carbon fiber-reinforced plastic material, a right side wall extending downward from a right end of the top wall, located to the right of the track belt and made of a carbon fiber-reinforced plastic material, a left reinforcing member that reinforces the left side wall and made of a carbon fiber-reinforced plastic material, and a right reinforcing member that reinforces the right side wall and made of a carbon fiber-reinforced plastic material; and a first closed cross-section is defined by being enclosed by the top wall, the left side wall and the left reinforcing member, and a second closed cross-section is defined by being enclosed by the top wall, the right side wall and the right reinforcing member.