| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash which is excellent in airtightness, sound insulation, and watertightness. SOLUTION: The sash is constructed by mounting an inner metal sash member 10 and an outer metal sash member 20 in a sash frame 1, doubly sealing a gap between the sash frame 1 and the inner metal sash member 10 with a primary sealing member and a secondary sealing member to define a space between the sash frame 1 and the inner metal sash member 10, doubly sealing a gap between the sash frame 1 and the outer metal sash member 20 with the primary sealing member and the secondary sealing member to define a space between the sash frame 1 and the outer metal sash member 20, and opening both the spaces to the outside so as to have the same pressure as the atmospheric pressure, to thereby improve the watertightness. Thus the sash has excellent airtightness, sound insulation, and watertightness imparted thereto. COPYRIGHT: (C)2006,JPO&NCIPI
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