| 摘要 |
<p>The present invention relates to a height adjusting device of an electric table including: housings joined and fixated to a fixing frame by being inserted into spaces formed in a longitudinal direction of the fixing frame, including an installation hole penetrating a bottom; multi-stage supporting columns joined and installed in the lower sides of the housings; and a driving means composed of a rotary guide fixated and installed inside the housings by forming a seating groove on an inner circumference, a power transmission unit composed of a rotary port fitted into the seating groove of the rotary guide, bolt shafts protruding downwards through the installation holes of the housings and inserted into the multi-stage supporting columns, and an interlocking shaft protruding towards an upper side of the rotary shaft, lifting guides screw-joined to the bolt shafts by being installed inside the multi-stage, and a driving unit rotating a power transmission unit composed of a fixing body forming a rotary gear with a rotary hole wherein the interlocking shaft of the power transmission unit is inserted, fixated, and joined to the rotary guide and a motor integrally formed with the fixing body rotating the rotary gear. The present invention adjusts the length of the multi-stage supporting columns by rotating the power transmission unit while the power transmission unit is guided by the lifting guides when the driving unit is driven; thus adjusting the height of the fixing frame.</p> |
