Abstract: A scooter (5) includes a head tube (50); a riser tube (51) freely and rotatably pivoted with the head tube (50), the upper end of the riser tube being provided with a handle (511); a preceding runner (52) provided at the lower end of the riser tube (51); a left carrier (53) and a right carrier (53) both connected to the head tube (50); a left back runner (54) and a right back runner (54) provided at the left carrier (53) and the right carrier (53) respectively, which support the scooter (5) alone with the preceding runner (52); the front end of each carrier (53) is provided with a cantilever (533) respectively. The left cantilever (533) and the right cantilever (533) are both provided at the head tube (50) in a suspending form of swinging back and forth freely. Provided between the left cantilever, the right cantilever (533) and the head tube (50) is a holding means (55) enabling the left carrier and the right carrier to perform back and forth alternate swing and displacement action.

Abstract: An improved three-wheeled scooter includes a head tube (10), a steering tube (11), a handle (12), a front wheel (13), a carrier (14), and rear wheels (16). The carrier (14) is mounted to a rear side of the head tube (10). The rear wheels (16) are mounted to opposite sides of a rear end of the carrier (14). The front wheel (13) is mounted to a bottom end of the steering tube (11). A rotation shaft (131) of the front wheel is located behind a centerline (Y) of the head tube. The handle (12) is mounted to a top end of the steering tube (11), and then extends up in an inclination angle about 75-90 degrees. The carrier includes left and right carrier poles (141) which are shortened. The front wheel (13) and the rear wheels (16) are substantially arranged in an equilateral triangle. The front wheel (13) can do S-shaped swing in a great angle, thereby improving the sliding speed of the three-wheeled scooter.

Abstract: A scooter (5) includes a head tube (50); a riser tube (51) freely and rotatably pivoted with the head tube (50), the upper end of the riser tube being provided with a handle (511); a preceding runner (52) provided at the lower end of the riser tube (51); a left carrier (53) and a right carrier (53) both connected to the head tube (50); a left back runner (54) and a right back runner (54) provided at the left carrier (53) and the right carrier (53) respectively, which support the scooter (5) alone with the preceding runner (52); the front end of each carrier (53) is provided with a cantilever (533) respectively. The left cantilever (533) and the right cantilever (533) are both provided at the head tube (50) in a suspending form of swinging back and forth freely. Provided between the left cantilever, the right cantilever (533) and the head tube (50) is a holding means (55) enabling the left carrier and the right carrier to perform back and forth alternate swing and displacement action.

Abstract: A kick scooter at least includes a vehicle frame, an upright arm, a handle, a front wheel, left and right bearing bars, a flexible linkage mechanism, left and right rear wheels, and left and right footboards. The upright arm and the left and the right bearing bars are assembled to the vehicle frame. The handle and the front wheel are respectively mounted to an upper end and a lower end of the upright arm. The flexible linkage mechanism is coupled between the upright arm and the left and right bearing bars to provide the left and right bearing bars with swinging torques. The left and right rear wheels as well as the left and right footboards are respectively disposed at positions near rear ends of the left and right bearing bars. Centers of gravity of the left and right footboards are located between the left and right rear wheels.

Abstract: A kick scooter at least includes a vehicle frame, an upright arm, a handle, a front wheel, left and right bearing bars, a flexible linkage mechanism, left and right rear wheels, and left and right footboards. The upright arm and the left and the right bearing bars are assembled to the vehicle frame. The handle and the front wheel are respectively mounted to an upper end and a lower end of the upright arm. The flexible linkage mechanism is coupled between the upright arm and the left and right bearing bars to provide the left and right bearing bars with swinging torques. The left and right rear wheels as well as the left and right footboards are respectively disposed at positions near rear ends of the left and right bearing bars. Centers of gravity of the left and right footboards are located between the left and right rear wheels.