| 摘要 |
<p>The present invention relates to a height-adjustable chair. The height-adjustable chair comprises an upper frame disposed in the lower part of a seat board; a cylinder mounted on the upper frame to move horizontally; a lower frame disposed in the lower part of the upper frame and in contact with a bottom surface; a folded link mounted on the upper frame and the lower frame while being coupled to the cylinder at one side; and a height adjustment lever selectively fixing the position of the cylinder to move the cylinder and controlling the height of the seat board. When a user sitting on the seat board operates the height adjustment lever, the folded link is folded, and the seat board descends to be close to the bottom surface.</p> |
