| 摘要 |
<p>An up-down driving device for a range hood is provide to allow the hood to be stably operated by disposing a screw corresponding to the center of gravity of a lower assembly, which is moved up and down. An up-down driving device for a range hood comprises an upper assembly(2) mounted on a ceiling, a lower assembly(4) spaced apart from the upper assembly to intake smell and heat, and an up/down unit(3) mounted on the upper assembly to lift/lower the lower assembly. The up/down unit includes an outer cover(11) having a tube shape, an inner cover(31) disposed inside the outer cover, a driving unit disposed on an upper part of the outer cover, a screw(27) and a nut block fastened with the screw. The screw is vertically disposed in the middle of the outer cover to receive driving force from the driving unit.</p> |
