| 摘要 |
The present invention relates to a height-adjustable post and, more specifically, to a height-adjustable post which allows the height thereof adjusted by a motor to rapidly reach a desired height. The height-adjustable post comprises: a motor box which is rotated by an embedded motor and has a power transfer boss; a first post of which the top end is fixed to the bottom surface of the motor box and of which the bottom end allows a first nut housing to be fixed thereto; a second post of which the top is opened to allow the first post to be inserted thereinto and the bottom is closed and which has a screw through hole in the center; a hollow screw in which a second nut housing having a second screw thread on the inner surface is installed; a third post of which the top is opened to allow the second post to be inserted thereinto and the bottom is closed; and a screw which has a screw thread corresponding to the second screw thread on the outer surface and of which the bottom end is fixed to the inner bottom surface of the third post. |
