| 摘要 |
<p>The invention relates to a mechanism for locking a door (2) or door leaf to the floor by means of a vertically displaceable latch (3) mounted to the bottom of the inner surface (6) of the door (2) or door leaf. In order to prevent burglars from unlocking the latch (3) from outside, the latch (3) is fixed to a slide block (16) vertically displaceable in the housing (14), the slide block (16) bearing a mounting pin (20) for an operating handle projecting inwardly, the mounting pin (20) being pivotable in a limited range about a horizontal first pivot axle arranged parallel to the door or door leaf, the slide block (16) further bearing an elbow lever (26) pivotable about a horizontal pivot axle (24) disposed perpendicular to the door (2) or door leaf, a first arm of the elbow lever (26) extending beyond the mounting pin (20) and being biased downwardly by a spring (30), while the other arm extends downward and is provided with a hook oriented laterally for releasably engaging a latch recess in the housing (14).</p> |
