| 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, a right 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. |
