| 摘要 |
<p>A device for modifying the distance of the saddle (21) from the head tube axis (W) of a bicycle, said saddle (21) being carried by a tube (4) inserted into the seating column (3) of the bicycle frame (1), comprises means (6) for shifting the axis (H) of the tube (4) parallel to itself along the bicycle central plane into at least two positions, of which one is closer to and one is further from the head tube axis (W), said means effecting this shifting while maintaining the seat portion (21A) of the saddle (21) in one and the same plane. <IMAGE></p> |
