Small-sized saddle riding vehicle, and rigidity adjustment device of body frame of vehicle

A rigidity adjustment device of a body frame of vehicle,

• wherein the vehicle includes a suspension device which connects the body frame and a wheel to each other, and a pre-tension is applied to a mounting portion of the suspension device of the vehicle,
• the rigidity adjustment device includes:
• a cylinder;
• a rod which penetrates one end portion of the cylinder and extends from an inside of the cylinder to an outside of the cylinder;
• and a plate-like member which is provided to one-end portion of the rod in the inside of the cylinder and is movable in the inside of the cylinder integrally with the rod, and an elastic member is disposed between the plate-like member and one end portion of the cylinder,
• a mounting portion to the body frame side is provided to the other end portion of the rod and the other end portion of the cylinder, and
• a tension adjustment mechanism is provided to the rod and the cylinder, or on either one of the rod or the cylinder,
• the elastic member is a rubber member.

A saddle riding vehicle comprising a body frame and a suspension device which connects the body frame and a wheel to each other, in which the suspension device suspends the wheel in a displaceable manner in an upward direction due to a reaction force from a road surface,

• wherein the saddle riding vehicle further comprises a rigid member, on the body frame side, having a support portion of the suspension device, and a rigidity adjustment device which is extended between a plural portions of the rigid member,
• the rigidity adjustment device applies a pre-tension to the rigid member,
• the pre-tension is set to generate a pre-force component to the support portion in the same direction as an upward moving direction of the wheel due to a reaction force of the wheel from the road surface,
• the rigidity adjustment device possesses both a tension generation function and a vibration attenuation function, and
• the rigidity adjustment device provides generation of a tension and attenuation of vibration by a rubber member.