| 摘要 |
A device for opening and closing a sliding-door, of the type wherein the rollers by which the door is carried sink into recesses in the guide-rail when the door is in front of the doorway so that the door, when opening it, has to be lifted somewhat, said device comprising a lever rotatable around a rotation shaft, the one arm of which is provided with a push-off cam and the other arm of which forms an operating handle, said lever being supported in the door in such a manner that, when the door has almost reached a final position, the lever can assume a position which is inclined in respect of a vertical line, by which the operating handle will be at a larger distance from the immediately adjacent post of the door-frame than the rotation shaft of the lever. |
