| 摘要 |
<p>A closing device for an aperture in a building includes a guide structure provided with a vertical pair of guide rails and/or an apron in the form of a flexible curtain, movable in the guide structure between an opening position of the aperture and a closing position under the effect of the action of a motorized drive unit including traction cables. The lower part of the apron is formed by a rigid blocking wall to which the traction cables are attached. The upper part of the apron is formed by a flexible blocking wall and is attached by its horizontal lower edge to the rigid blocking wall and by its horizontal upper edge to the lintel of the aperture. In the opening position, the apron is folded onto itself in the upper part of the guide rails, whereby this upper part is horizontal or inclined relative to the horizontal.</p> |
