| 摘要 |
<p>The invention concerns a bicycle for general use, suitable for urban and rural traffic, for tourism and also for competition. The bicycle comprises a frame (A) with a front fork (B) and a rear fork (B1) with rollers (64) acting on a profile (35, 65) connected by means of a rim spacer to the outer wheel rim (61), the rear fork (B1) further comprises two fixed arms (2b, 2c) and a mobile drive arm (9). The mobile drive arm (9) is connected to a rotating spindle (40) supported in a collar (27) in the center of the rear fork, the spindle being rotated by a drive mechanism comprising a telescopic arm (10) connected to the pedal crank (78).</p> |
