| 摘要 |
<p>The connections between portions of bicycle frames or forks, comprised of tubes, particularly the connections to the steering tube (9), to the crank gear bearing (10) and to be saddle tube (11), comprise at least one first tube (1) connected by its preformed end (6') to the periphery of a second tube (2) by means of an extruded material (12). The end of the first tube is enlarged and adapted to the periphery of the second tube, while the extruded material is plastic material. Furthermore, the ends may be adhered, respectively, to the periphery of other tubes. In addition to the tubes forming the frame itself, the rear portion of the bicycle may also be connected, by its ends, to the crank gear bearing (10) and to the saddle tube (11) by means of the extruded plastic material.</p> |
