| 摘要 |
PROBLEM TO BE SOLVED: To simply and surely prevent the folding of a sash door by mistake under a double-sliding open-close state in a sash in which double-sliding opening and closing and folding opening and closing are enabled. SOLUTION: The foldably constituted sash door 10 is arranged to guide rails 32 and 36 for upper and lower frames 31 and 35 in an upper hanging manner. The sash door 10 can be folded by making the intermediate connecting frame 18 of the sash door escape from engaging-disengaging places displaced to the vertical frame 39 side from fixed places in the guide rails 32 and 36 while a door-end stile 11 is formed of a stile body 12 and a stile 13 for adjusting a width rotatable to the stile body 12 and the sash door 10 can be moved to the vertical frame 39 side by rotating the stile 13, and the intermediate connecting frame 18 can be moved to the disengageable places with the movement of the sash door 10.
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