| 摘要 |
<p>An apparatus for a movable stand wherein a plurality of stepped floors can be collapsed in a telescopic manner. The apparatus is provided to assure straightforward movement of a front stepped floor with respect to a rear stepped floor. A pair of sprocket wheel trains are mounted on a pair of side walls (2d, 3d) of the front stepped floor (2, 3) and each includes a pair of guide sprocket wheels (8, 9) mounted for integral rotation on a connecting shaft (10) and an independent follower sprocket wheel (11). A pair of chains (12, 13) are secured at the opposite ends thereof to the rear stepped floor (3, 4) and extend in parallel to each other through the sprocket wheel trains on the front stepped floor (2, 3) When the front stepped floor (2, 3) is moved, the sprocket wheel trains stroke the chains (12, 13) while being rotated in an integral relationship by way of the connecting shaft (10).</p> |
