| 摘要 |
<p>Each door or casement frame (1,2) has in the area of its main closing edge a sensor device (3,4) which is mounted on the frame and moved along with it. The sensor device has a sensor field which extends in the direction of movement of the casement frame in front of the main closing edge and at least with positions of the casement outside of the closing position does not detect the opposite main closing edge. The sensor field can be narrow and is preferably significantly shorter than the maximum opening width of the casement.</p> |
