| 摘要 |
<p>A locking device relating to a door construction to be used in an air raid shelter or the like. The door construction (1) comprises a door panel (4) arranged in a frame (3) and provided with a supporting frame (5). To make the door construction, subjected to a load, as unyielding and stable as possible, a mechanism (21 to 24) of the locking device (2) is arranged in the supporting frame (5), actual bolt members being constituted by cylinder elements (23) to be supported on the supporting frame (5) and to be arranged to comply in shape with recesses (31) of the frame (3).</p> |
