Saddled vehicle

1. A saddled vehicle comprising:

a vehicle body frame;

a fuel tank that is provided on the vehicle body frame and stores fuel;

a canister that collects evaporated fuel generated in the fuel tank;

a rear wheel that is arranged in a rear portion of the vehicle body frame;

a rear fender that is arranged along an outer circumferential side of the rear wheel;

a chamber portion that is arranged on a front side of the rear wheel and is provided on the outer circumferential side with respect to a mudguard surface of the rear fender facing the rear wheel; and

an atmospheric air introduction pipe that is connected to the chamber portion and introduces atmospheric air to the canister,

wherein the chamber portion has a side wall portion extending upward from a bottom surface portion of the chamber portion and is open upward,

wherein the saddled vehicle further includes an engine accessory component that is arranged in front of the rear fender and a bottom portion of the engine accessory component is arranged so as to face the top of the chamber portion,

wherein the vehicle body frame includes a pair of sub-pipes which are arranged on both sides in a vicinity of a front portion of the rear fender in a vehicle body width direction,

wherein the pair of sub-pipes are arranged between an upper end portion of the side wall portion and the engine accessory component so as to cover a gap between the side wall portion and the engine accessory component in a side view, and

wherein a center longitudinal axis of the canister is oriented in a vehicle body longitudinal direction.

2. The saddled vehicle according to claim 1 ,

wherein the rear fender includes engagement portions which protrude outward in the vehicle body width direction from the side wall portions being positioned on both sides in the chamber portion in the vehicle body width direction and engage with the pair of sub-pipes.

3. The saddled vehicle according to claim 2 ,

wherein the engine accessory component is an air cleaner case, and

wherein the air cleaner case has an attachment portion which fixes the air cleaner case to the pair of sub-pipes.

4. The saddled vehicle according to claim 3 , further comprising:

an engine that is mounted in a front portion of the vehicle body frame and includes a cylinder which extends obliquely upward to the front from a crank case;

the fuel tank that is arranged above the engine; and

a fuel supply device that is arranged in a rear of the cylinder and feeds the cylinder with air having passed through the air cleaner case and fuel supplied from the fuel tank,

wherein the canister is arranged above the crank case and in the rear of the cylinder, and

wherein the chamber portion is arranged between the engine and the rear wheel.

5. The saddled vehicle according to claim 2 , further comprising:

a side stand that is provided on one side of the vehicle body frame in the vehicle body width direction,

wherein the chamber portion includes a drain hole which is formed on one side of the bottom surface portion provided with the side stand in the vehicle body width direction and the atmospheric air introduction pipe of the canister is connected to the other side thereof in the vehicle body width direction.