A leaning suspension system for vehicles includes suspension arms that rotate about the same pivoting point. A swing frame also rotates about the same pivoting point. The center of gravity of the vehicle remains lower than the pivoting point even when the vehicle is leaning. A wheel mount assembly is rotatably mounted to a suspension arm. A shock absorber has an end that is connected to the wheel mount assembly and another end that is connected to the suspension arm. A control unit of the vehicle includes a computer that controls actuators of the leaning suspension system based on received sensor information. The vehicle can be a tricycle or a quadracycle.

A leaning suspension system for vehicles includes suspension arms that rotate about the same pivoting point. A swing frame also rotates about the same pivoting point. The center of gravity of the vehicle remains lower than the pivoting point even when the vehicle is leaning. A wheel mount assembly is rotatably mounted to a suspension arm. A shock absorber has an end that is connected to the wheel mount assembly and another end that is connected to the suspension arm. A control unit of the vehicle includes a computer that controls actuators of the leaning suspension system based on received sensor information. The vehicle can be a tricycle or a quadracycle.

A brake controlling operation transmission member includes a leaning-associated deforming portion that deforms in response to turning of a body frame. A vehicle includes at least a portion of the leaning-associated deforming portion located between a first restrictor located below a lower cross portion in relation to an up-and-down direction of the body frame and a central portion in a left-and-right direction of the body frame so as to prevent movement of the brake controlling operation transmission member and a brake device.

A brake controlling operation transmission member includes a leaning-associated deforming portion that deforms in response to turning of a body frame. A vehicle includes at least a portion of the leaning-associated deforming portion located between a first restrictor located below a lower cross portion in relation to an up-and-down direction of the body frame and a central portion in a left-and-right direction of the body frame so as to prevent movement of the brake controlling operation transmission member and a brake device.

A fan generates an air flow that cools a portion of an engine unit. A ventilation opening causes air flow directed to the fan to pass therethrough. Under a condition that a body frame is in an upright state and a condition that a left front wheel and a right front wheel are not turned by a steering device, the ventilation opening is disposed directly behind a lower cover of an inner fender, ahead of a rear end of a rear wheel, on the right of a left end of the left front wheel, and on the left of a right end of the right front wheel.

A fan generates an air flow that cools a portion of an engine unit. A ventilation opening causes air flow directed to the fan to pass therethrough. Under a condition that a body frame is in an upright state and a condition that a left front wheel and a right front wheel are not turned by a steering device, the ventilation opening is disposed directly behind a lower cover of an inner fender, ahead of a rear end of a rear wheel, on the right of a left end of the left front wheel, and on the left of a right end of the right front wheel.

A tricycle for riding on any type of terrain, improving stability and safety in slow movement, having a structural chassis incorporating a rolling assembly made up of a rear wheel associated to a propulsion system and two front wheels linked to a driving handlebar, wherein the front wheels are incorporated in a height-tilting suspension, made up of articulated quadrilaterals able to be deformed independently with vertical movement depending on the individual resting of the front wheels on irregularities of the terrain, the height-tilting suspension linking to the handlebar, by means of a transmission, which links the height-oscillating movements of the articulated quadrilaterals of the height-tilting transmission with an equivalent lateral tilting of the handlebar, this transmission having a clutch which allows for enabling or disabling the linkage of the movements between the height-tilting suspension and the handlebar.

A tricycle for riding on any type of terrain, improving stability and safety in slow movement, having a structural chassis incorporating a rolling assembly made up of a rear wheel associated to a propulsion system and two front wheels linked to a driving handlebar, wherein the front wheels are incorporated in a height-tilting suspension, made up of articulated quadrilaterals able to be deformed independently with vertical movement depending on the individual resting of the front wheels on irregularities of the terrain, the height-tilting suspension linking to the handlebar, by means of a transmission, which links the height-oscillating movements of the articulated quadrilaterals of the height-tilting transmission with an equivalent lateral tilting of the handlebar, this transmission having a clutch which allows for enabling or disabling the linkage of the movements between the height-tilting suspension and the handlebar.

The present disclosure provides a tilting-capable three-wheeled boarding vehicle comprising: a steering-assembly configured to enable steering and tilting of the vehicle; a tilting-capable assembly including one driving wheel and a rotatable elongate body extending from the steering-assembly toward driven-wheels; a non-tilted assembly including a non-rotatable elongate body, the two driven wheels, a shaft connecting the two driven wheels to each other, and a first support bar extending perpendicularly to the non-rotatable elongate body, wherein the rotatable elongate body is rotatably coupled to the non-rotatable elongate body; and a vertically-movable elongate assembly pivotally coupled, at one end thereof, to the rotatable elongate body and contacting, at the other end thereof, the first support bar during downward movement thereof, wherein the vertically-movable elongate assembly is configured to vertically move by pedaling forces from a user.

The present disclosure provides a tilting-capable three-wheeled boarding vehicle comprising: a steering-assembly configured to enable steering and tilting of the vehicle; a tilting-capable assembly including one driving wheel and a rotatable elongate body extending from the steering-assembly toward driven-wheels; a non-tilted assembly including a non-rotatable elongate body, the two driven wheels, a shaft connecting the two driven wheels to each other, and a first support bar extending perpendicularly to the non-rotatable elongate body, wherein the rotatable elongate body is rotatably coupled to the non-rotatable elongate body; and a vertically-movable elongate assembly pivotally coupled, at one end thereof, to the rotatable elongate body and contacting, at the other end thereof, the first support bar during downward movement thereof, wherein the vertically-movable elongate assembly is configured to vertically move by pedaling forces from a user.