| 摘要 |
PROBLEM TO BE SOLVED: To provide the holding structure of fireproof glass in which a glass end can be held positively in the case of the softening and shrinkage of the fireproof glass by fire. SOLUTION: Fireproof glass 20 itself is solftened by heat in the case of a fire, and the pushing engaging end 23a of a pushing piece 21A is bitten to a glass surface. When glass is shrunk in the glass center direction by the softening, the pushing piece 21A is pulled toward a glass center in a state that the engaging end 23a is bitten to the glass surface, and the engaging end 23a draws a circular arc in the biting direction to the fireproof glass 20 at a small angle centering around the front end of a mounting piece 22. The peripheral section of the fireproof glass 20 is pushed and moved positively in an airtight material 18 direction, and the pushing holding state of a glass peripheral section is maintained. COPYRIGHT: (C)2004,JPO
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