Patent ID: 7669681

Claim:
A motorbike, comprising: a main body that has an engine mounted therein, a rotation shaft which is connected to an output shaft of the engine through a transmission so as to be rotatably disposed in the rear side, and a driving gear constituted by a pair of right and left discs fixed to the rotation shaft and a plurality of bar bodies which are disposed in the circumferential direction of the pair of discs so as to connect one disc to the other disc; a front wheel assembly that is disposed in the front side of the main body to be constituted by a front wheel cover, a front wheel frame by which a plurality of guide rollers are rotatably supported therein, and a front wheel which is rotatably supported by the plurality of guide rollers; a rear wheel assembly that is disposed in the rear side of the main body to be constituted by a rear wheel cover, a rear wheel frame by which a plurality of guide rollers are rotatably supported therein, and a rear wheel which is rotatably supported by the plurality of guide rollers; front and rear stepping pedals provided in the front and rear assemblies; a connection bar through which the rear wheel cover and the front wheel cover is connected in the longitudinal direction; a connection link through which the front wheel frame is connected to the lower portion of the main body; a brake mechanism that is fixed to the rotation shaft of the main body; and a controller that is connected to the engine and the brake mechanism through a flexible cable and in which an acceleration pedal and a braking pedal for controlling driving of the engine and braking of the rear wheel shaft, respectively, are rotatably hinge-joined, wherein, on the outer circumferential surface of the rear wheel, a plurality of grooves are formed in a circumferential direction to correspond to the outer circumferential surfaces of the bar bodies of the driving gear, and the grooves of the rear wheel and the bar bodies are brought into rotational contact with each other so that the rear wheel is rotatingly driven.