| 摘要 |
<p>A castor wheel comprises a hub (2) supporting a wheel body and a pedal lever (12), and engaging means, driven by the pedal lever, defining at least a locking position for locking the rotation of the wheel body and at least a free rotary position in which the wheel body can be freely rotated, characterized in that the engaging means comprise at least a tooth rigid with the pedal lever and designed for engaging a respective plurality of ridges (8) which are circumferentially arranged on at least a surface of the wheel body. <IMAGE></p> |
