| 摘要 |
<p>The present invention relates to a bicycle called quadricycle. The quadricycle comprises a longitudinal frame (1) and four wheels (2, 3) connected thereto with support and axle structures. It also has a seat (4), steering means (5), and power transmission (6). In the invention, the front wheels (2) are connected to the longitudinal frame with a front frame (9), and the back wheels (3) that are joined together with a back axle (17) are, in turn, connected to the longitudinal frame with back arms (18a, 18b). At least the back arms connecting the back axle to the longitudinal frame are connected rotatably to the longitudinal frame in such a manner that the back axle is rotatable from its first position extending from a back part (8) of the device parallel to the longitudinal axle (10) of the longitudinal frame to a position substantially against the longitudinal frame.</p> |
