| 摘要 |
The device has a wooden casing (10) fixed against a wall. A metal beam (20) is hinged to the casing to support a mattress (5). A linkage system (30) is housed in the casing for enabling the beam to move from a raised position for retraction inside the casing, and another position provided perpendicular to the housing at a given height from the ground (2). An upper rod (33) and a lower rod (34) are articulated on a set of axes (X1-X4) related by the casing and the beam. One axis of the upper rod is placed in a lying position of the beam approximately on a same level of the beam. |
