BLOW-UP PREVENTION STRUCTURE FOR SHUTTER CASE OF RIBBON WINDOW

摘要

PROBLEM TO BE SOLVED: To secure a blow-up prevention function at a portion with a central pillar 14 of a shutter case 3 for a ribbon window.SOLUTION: A rear edge of a support metal fitting 12 is fixed on an engaging metal fitting 11 fastened on a building frame K for engaging with brackets 4, 5 that are adjacent to each other. A straddling part 13b of a blow-up preventing body 13 having an inverted U-shape is fixed on a front edge of the support metal fitting 12, while bringing a leg part 13c of the blow-up preventing body 13 in contact with the brackets 4, 5. A folded part 13d formed by folding the leg part 13c is laminated with support pieces 4c, 5c formed on the bracket by folding, a bottom plate surface 3c of a shutter case 3, and a bottom surface 9c of a decorative edge, and the laminated part is integrally fixed, thus enhancing strength.SELECTED DRAWING: Figure 3