| 摘要 |
<p>In a door with a frame (1) and a door leaf movable overhead and consisting of a plurality of panels (4, 4', 4'') articulated in succession on one another and being respectively mounted by means of rollers (8') in lateral guide rails possessing a vertical portion (5) extending parallel to the lateral frame spars and a horizontal portion (7) connected arcuately (6) thereto, to achieve as small a space requirement as possible above the top edge of the door aperture, the door leaf at the same time being plane in the closed state, at least the panel (4) uppermost in the closing position is equipped with roller holders (9) which, when the door leaf is in the closing position, automatically ensure a greater distance between the rollers and the panel than in the open position. <IMAGE></p> |
