| 摘要 |
PROBLEM TO BE SOLVED: To collapse and store a continuously provided shutter after the opening and closing guide of the shutter body and the opening thereof by making the middle column of the continuous shutter collapsible and extendable. SOLUTION: The middle column 4 of the continuous shutter A rotatably connects the longitudinal end of four same length middle column constitution materials 41 respectively to make a rhomb, is made a pantograph performing parallel motion collapsible and expandable, the upper end is fixed on a shutter case 3, the fixing part is a reference position of extension and contraction, the collapsing is enabled, when it is lowered and extended, it can be held on a holding part 48 forming the lower end on a floor face, and the opening and closing guide of the shutter body 2 is performed.
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