| 摘要 |
PURPOSE: A height adjusting device is provided to make the maintenance easy by elastically supporting a plurality of brackets using a first and second supporting bars. CONSTITUTION: A height adjusting device is composed of an operating unit(110) and a frame part(410). The operating unit controls the height. The height of the frame part is controlled by a lifting action. The operating unit is composed of a first, second and third brackets(111,210,310). The first bracket is formed at the center of the operating unit. The second bracket is fixed to one side of the first bracket. The third bracket is fixed to the other side of the first bracket. |
