| 摘要 |
A collapsible desk of adjustable height comprises a board (1) and support feet (5) joined in an articulated way by first and second parallel, generally rectangular members (3, 4) in such a way that the board, the feet and the members provide a deformable parallelogram which allows one to regulate the height of the desk. One of the generally rectangular members (3) is provided with two supports (7) via which a double lever (6) is rotatably mounted, the lever being provided with a series of detents (8) which cooperate with a rod (9) held by two supports (10) fast with the upper side of the other generally rectangular member (4) to hold the lever and thereby the board in a determined one of a plurality of positions. |
