| 摘要 |
A multi-functional bicycle is provided to dispose a gear wheel connected to a rear wheel shaft gear having a diameter that gradually decreases, thereby increasing a rotational force of a rear wheel. A multi-functional bicycle includes a pedal side chain gear(12), a rear wheel shaft chain gear(14), a chain(13), a pedal(15), a plurality of front wheel shaft gears(20), a plurality of drive gears(22), a handle shaft(25), and a connection frame(27). The pedal side chain gear is connected to the rear wheel shaft chain gear by the chain. The plurality of front wheel shaft gears are installed at both sides of the front wheel shaft. The plurality of drive gears are installed at handle support frames(23') to be meshed with the front wheel shaft gear. The handle shaft is connected to the connection frame. |
