| 摘要 |
PROBLEM TO BE SOLVED: To prevent a fire from penetrating even at an initial stage in a high temperature state when a fire occurs.SOLUTION: A fixture has a bottom rail 23 between lower ends of left and right stiles 24, 25. A resin cap member 40 is installed on bottom edges of the stiles 24, 25 of a sash 20. The sash is openably and closably supported on an opening frame 10. A thermal expansion material is disposed between the sash 20 and a sill 12 of the opening frame 10 and fills a clearance between the sash and the sill by expanding in a high temperature state. The thermal expansion materials 27, 28 are disposed between the bottom rail 23 and the sill 12 across an entire length of the bottom rail 23. The thermal expansion material 50 is disposed at a section, which is a top face of the sill 12 and covers a lower end face of the stile 25, between the stile 25 and the sill 12.SELECTED DRAWING: Figure 2 |
