Straddle type vehicle

A straddle type vehicle, comprising:

• paired left and right main frames branching into left and right vehicle width directions from a head pipe and extending toward a vehicle rear;
• an engine provided below the paired left and right main frames;
• and
• an air cleaner constituting an intake system of the engine provided between said paired left and right main frames,
• said paired left and right main frames including
• a plate-shaped connecting bottom portion bridged across the paired left and right main frames,
• left and right outer wall portions extending upward and downward from the plate-shaped connecting bottom portion, left and right ceiling portions extending inward in the vehicle width direction from top ends of said left and right outer wall portions, and
• left and right inner wall portions extending downward from said plate-shaped connecting bottom portion inside said left and right outer wall portions in the vehicle width direction,
• wherein said air cleaner includes an air cleaner case;
• and wherein
• the air cleaner case is disposed above said plate-shaped connecting bottom portion.

A straddle type vehicle, comprising:

• head pipe means for supporting vehicle steering components thereupon;
• left and right main frame means branching into left and right vehicle width directions from the head pipe means, and extending toward a vehicle rear;
• and
• opening means provided in a vicinity of the head pipe means, said opening means for taking in travelling wind and introducing air from the opening means to an air cleaner means disposed between the left and right main frame means,
• said left and right main frame means including
• left and right U-shaped means having U-shaped cross sections opened inward in the vehicle width direction, said U-shaped means for forming part of an air cleaner case means, and
• hollow left and right frame means disposed below the left and right U-shaped means,
• wherein the air cleaner means is disposed between the left and right U-shaped means.

A straddle type vehicle, comprising:

• left and right main frame means for supporting vehicle components thereupon, said left and right frame means branching into left and right vehicle width directions from a head pipe means for supporting vehicle steering components thereupon, said left and right main frame means extending toward a vehicle rear;
• engine means for providing motive force disposed below the left and right main frame means;
• air cleaner means for cleaning intake air constituting an intake system of the engine means, said air cleaner means disposed between said left and right main frame means,
• said left and right main frame means including
• a plate-shaped connecting bottom means bridged across the left and right main frame means,
• left and right outer walls means extending upward and downward from the plate-shaped connecting bottom means;
• left and right ceiling means extending inward in the vehicle width direction from top ends of the left and right outer wall means, and
• left and right inner wall portions extending downward from said plate-shaped connecting bottom means inside said left and right outer wall means in the vehicle width direction,
• wherein said air cleaner means includes an air cleaner case means, and wherein the air cleaner case means is disposed above said plate-shaped connecting bottom means.