| 摘要 |
The door consists of a panel (3) with side rollers traveling in vertical (7) and horizontal (8) guide rails, and cables winding onto drums (13) on the ends of a spring-loaded shaft (12) to compensate for the door's weight. The ends of the horizontal guide rails are equipped with stops (17) which slow down and hold the door at the end of its travel when opened, but do not prevent it from being closed manually. |
