| 摘要 |
<p>The device has a housing with spring drive and hollow drive wheel. It also has a fixed cylindrical spring housing (61), passing through the housing wall (1.1), with one end of the spring core (8) fastened in it, while the other end is fastened non-turnable to the hollow wheel of the drum (5) or a planet carrier. The tensioned spiral spring is contained in the drum or the housing. The inner spring end is connected to the spring core, and the outer end is suspended in a window in the drum wall.</p> |
