| 摘要 |
PURPOSE: A pedal roller board is provided to make a user travel at a high speed without much force by rotating a rear wheel through many gears. CONSTITUTION: A pedal roller board comprises a handle unit(100) consisting of a handle(102), a hand brake lever(104), a handle length adjusting device(106), and a front wheel frame(108), a connecting frame(200), and a rear wheel(111). A power generating unit(300) connected via the connecting frame transmits power to the rear wheel. A power transmitting unit transmits power between the power generating unit and the rear wheel. Upon stepping on a left and a right pedals(310), the pedal effort is transmitted to crank levers installed at the left and right sides of a crankshaft. Then, the pedal effort is increased. The upward and downward motion of the pedals is converted to the rotational force of the crankshaft. Thus, the rear wheel is rotated by the rotational force transmitted through many gears.
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