| 摘要 |
The door opening mechanism, comprising vertical and horizontal rails (3), a drive motor, straps (17), pulleys and rollers that move along the rails, has an auxiliary drive for the initial opening phase comprising an endless screw (7) and a nut (9) connected detachably to the door panel. The screw is set parallel to a horizontal rail (3) and has a stop to limit the travel of the nut, which is connected to the door by a bar (10) and a retaining element (11) with a hook (16) that disengages automatically from the bar when the nut reaches the stop. |
