| 摘要 |
<p>The structure (1) has an upright (5) articulated at one end on a circulation plate (3) about an articulation axis (A) parallel to the plate between a folded position and an unfolded position of use orthogonal to the plate. A foldable arm (7) connects the plate and the upright, where releasable crutches lock the arm in the unfolded position. The plate includes locking cams for locking the articulated upright in the unfolded position, where the locking cams are rotatably mounted relative to the plate.</p> |
