| 摘要 |
The present invention relates to a power transferring device. The device includes a bearing on a rhombus-shaped bar and a crank arm to be rotatable in order to convert either the vertical or horizontal movement of the bar which receives external force into rotary motion for a crank. Therefore, the present invention transfers driving force without loss of power as the vertical or horizontal movements of the rhombus-shaped bar combined with pedals on the left and right of a bicycle are converted into rotary motion and transferred to the wheels by the combination of the bar and the crank arm. |
