| 摘要 |
<p>17-5-1979 1 PHN 9297 "Cable winder". The invention relates to an automatic cable winder for, for example, a vacuum cleaner, comprising a latching device for latching the drum so as to prevent reverse rotation, and a braking device so as to ensure that the cable is wound smoothly and uniformly. A braking device is known in which the brake blocks are pivotably mounted on a flange of the drum, which brake blocks move outwards under the influence of the centrifugal force when the cable is taken up, engage with a stationary housing part and provide a braking action as a result of friction. As the winding speed of the drum is comparatively low,large brake blocks are necessary in order to obtain a sufficient braking froce. It is proposed to mount the brake blocks on a separate disc and to drive said disc by the drum via a speed-increasing mechanism. The disc now rotates with a much higher speed, so that only small brake blocks are needed.</p> |
