| 摘要 |
PROBLEM TO BE SOLVED: To provide a firm hinging method without any gap in the folding panel structure of four angles and four faces. SOLUTION: A cylindrical fitting part 9 is projected on the entire length of the vertical frame 6 of each side panel of a folding panel structure hinging a pair of the side panels hinged on a two-divided engaging member 7 on a front and rear face panel body, and the vertical frames 4, 5, 6 of each panel are made a hinge by providing circular-arc dovetail groove on the entire length of the vertical frames 4, 5 of an engaging member 7 and the front and rear panel body.
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