A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A shock absorber and a transportation tool. The shock absorber includes a first rotating arm; a second rotating arm pivotally coupled to the first rotating arm; and a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm, wherein an included angle between the first rotating arm and the rotating arm has a set value. The shock absorber has a simple structure and good shock absorption effect and adjustable stroke.

A shock absorber and a transportation tool. The shock absorber includes a first rotating arm; a second rotating arm pivotally coupled to the first rotating arm; and a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm, wherein an included angle between the first rotating arm and the rotating arm has a set value. The shock absorber has a simple structure and good shock absorption effect and adjustable stroke.

A scooter includes a frame which has a footboard and supports a rear wheel, a steering column provided with a front wheel pivotably mounted on the frame, and a motor provided with a drive shaft coupled to the rear wheel via a transmission system. The transmission system includes a rear transverse shaft having a first end portion and a second end portion rotatably coupled to the rear wheel; —a gear system having a sprocket coupled rotatably to the first end portion and in meshing engagement with a toothed gear rotatably coupled to the drive shaft; and —a rear structure attached to the frame, supporting the gear system and the rear transverse shaft, and extending laterally along one side only—right or left—of the rear wheel, such that the second end portion extends from the rear structure to support the rear wheel in a cantilevered fashion.

A steering linkage assembly includes a support member; a connecting portion rotatably arranged on the support member and connected to an external steering member; a first steering linkage; a first ball head rod provided with one end connected to a ball head at a first end of the first steering linkage and the other end connected to the support member; a second steering linkage; and a steering rotating shaft mounted at a first end of the second steering linkage and rotatably connected to the support member. A rotating centerline of the steering rotating shaft is not parallel to that of the connecting portion. An included angle is formed between a connecting line of ball head centers of the first and second ball head rods and a connecting line of a rotating center of the steering rotating shaft and a ball head center of the third ball head rod.

A steering linkage assembly includes a support member; a connecting portion rotatably arranged on the support member and connected to an external steering member; a first steering linkage; a first ball head rod provided with one end connected to a ball head at a first end of the first steering linkage and the other end connected to the support member; a second steering linkage; and a steering rotating shaft mounted at a first end of the second steering linkage and rotatably connected to the support member. A rotating centerline of the steering rotating shaft is not parallel to that of the connecting portion. An included angle is formed between a connecting line of ball head centers of the first and second ball head rods and a connecting line of a rotating center of the steering rotating shaft and a ball head center of the third ball head rod.

A leaning vehicle including a braking mechanism, a linkage mechanism configured to cause a body frame of the leaning vehicle to lean leftward or rightward, a lean lock mechanism configured to restrict leftward leaning and rightward leaning of the vehicle body frame, and an interlocking mechanism configured to actuate the braking mechanism and the lean lock mechanism. The interlocking mechanism includes an operation input section configured to input a first operating force, a brake-operation-input section configured to input a second operating force, an operating force distributor configured to distribute the first operating force input by the operation input section to the lean lock mechanism and the braking mechanism, and a brake actuator configured to actuate the braking mechanism by the first operating force distributed to the braking mechanism by the operating force distributor, or by the second operating force input by the brake-operation-input section.