| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash with good appearance, which sash prevents damages to airtight materials. SOLUTION: In the sash 1 according to this invention, the upper frame 9 is provided with an upward disengagement stopper 17 and a stopper 19. The upward disengagement stopper 17 is fixed to the bottom face 9a of the upper frame 9 to restrict the upward movements of a screen 5, and also movable along the longitudinal direction of the upper frame 9. The stopper 19 comes into contact with the upward displacement stopper 17 to restrict its movements, when it has moved to a position free from the screen 5. The screen 5 has a downward disengagement stopper 33 that engages with the lower frame 35 from below to restrict the screen's upward movements. The lower frame 35 has a cutter 43. When the side face 45a of the screen 5 is aligned with the side face 17a of the upward disengagement stopper 17 in contact with the stopper 19, the downward disengagement stopper 33 is positioned below the cutter 43 to allow the screen 5 to move upward. COPYRIGHT: (C)2007,JPO&INPIT
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