| 摘要 |
<p>This invention relates to a bicycle with a forward and backward pedaling system which drives a bicycle forward in either a forward or a backward pedaling. This invention relates to a bicycle moved by front and rear drive method of pedal which comprises a backward driving sprocket (6) which is installed on a driving shaft (5) for a load driving in forward direction but a no load driving in backward direction; a forward driving sprocket (7) which is installed on the driving shaft (5) for a load driving in forward direction but a no load driving in backward direction, and connects an upward induction sprocket (12) which is installed for a no load driving on the top of a support part (10) that is placed along the top of the backward driving sprocket (6) and rearward induction sprocket (16) which is connected to a rearward driving shaft (15) for a no load driving and is placed at the bottom of a support part (10) that is placed along the lower rear direction of the upward induction sprocket (12) with a driving chain (8); and an auxiliary induction sprocket (17) which is installed on the rearward driving shaft (15) for a no load driving, and the forward driving sprocket (7) and the auxiliary induction sprocket (17) are connected by an auxiliary chain. The bicycle in this invention can move forward in backward pedaling as well as in forward pedaling. Therefore, one can ride on a bicycle for an extended period while changing posture, can climb up a hill with reduced power consumption by pedaling in a backward direction. This invention is simply applicable to all bicycles, practical and useful.</p> |
