FIXTURE

To provide a fixture capable of giving a fireproof performance to sashes having members made of resin material while maintaining heat insulation performance.SOLUTION: A reinforcement member is arranged in a hollow part of a resin meeting stile of an outer sash and a hollow part of a resin meeting stile of an inner sash respectively. The reinforcement member of the meeting stile of the inner sash has a generally U-shape in a cross-section including an inner peripheral wall, an outer peripheral wall, and an outdoor facing wall. The reinforcement member of the meeting stile of the outer sash has a generally U-shape in a cross-section including an inner peripheral wall, an outer peripheral wall, and an indoor facing wall. Each of the reinforcement members is arranged so that the front walls face each other. A thermal expansion refractory material is provided in an area opposite to the front wall respectively and a thermal expansion refractory material is arranged between the facing parts of the meeting stile of the outer sash and the meeting stile of the inner sash.SELECTED DRAWING: Figure 6 【課題】樹脂材料からなる部材を有するサッシに対して、断熱性能を維持しながら、防火性能を付与する。【解決手段】外障子の樹脂製の召合框の中空部内及び内障子の樹脂製の召合框の中空部内にそれぞれ補強部材が配置されており、内障子の召合框の補強部材は、内周側見込壁と外周側見込壁と室外側見付壁を有する断面略Ｕ字状をなしており、外障子の召合框の補強部材は、内周側見込壁と外周側見込壁と室内側見付壁を有する断面略Ｕ字状をなしており、両補強部材は、見付壁同士が対向するように配置されているとともに、見付壁の反対向側にある領域にそれぞれ熱膨張耐火材を有しており、外障子の召合框と内障子の召合框の対向部間に熱膨張耐火材が配置されている。【選択図】図６