| 摘要 |
<p>The present invention relates to a multifunctional bicycle, and provides a bicycle which is manufactured into a small size by eliminating a driving chain, has pedals each of which can be rotated in a random direction, enables automatic transmission, and can be utilized as a bicycle exercise tool, and which comprises: a rear wheel frame (10) and a front wheel frame (20), which are provided with a rear wheel axle (100) and a front wheel axle (500), respectively; a connection frame (30) for connecting the rear wheel frame (10) and the front wheel frame; a left disk (L110) and a right disk (110), which are coupled by a ratchet structure from the left and right sides of the rear wheel axle, respectively; a driving disk (120) which is fixed to the rear wheel axle; a first shaft (210) which is connected to the driving disk and a driving force conversion portion (200); a transmission gear portion (300) which is connected to the rear wheel axle; a second shaft (220) which is connected to the transmission gear portion and the driving force conversion portion (200); a third shaft (410) which is connected to a third shaft gear (411) that is integrated with the right disk and a pedal transmission portion (400); and a fourth shaft (420) which is connected to a fourth shaft gear (424) that is integrated with the left disk and the pedal transmission portion (400).</p> |
