| 摘要 |
The door has a sheet (4) horizontally cross-linked to an inlet opening (30). A box room (3) is fixed between two extreme end positions. A blade (4) occludes an aperture of a step (2) and is fixed with vertical edges (40) of a vertical column in one of the extreme end positions. The blade is placed inside the box room in the other extreme end position. Actuators are connected to accumulators, where minimal mechanical energy is accumulated in the accumulators. |
