| 摘要 |
PURPOSE: A medium curtain is provide to shorten the space between an inner window and an outer window and widen the width of a window, also to prevent air flowing, the inflow of dust and rain. CONSTITUTION: The medium curtain is composed of: a widow seating part located at the center of the inner side; an access groove(3) created at the inner side; a catching piece(12) containing an outer connector(11) and an access projection(13) extended from the end of the outer connector to the front of the outer window and to the rear of the inner window. When the inner window and the outer window get shut, the medium window seating of the inner widow and the medium window seating of the outer window are overlapped, at this point the access projection(13) connected to the medium window seating of the inner window and inserted to the access hole created at the medium window seating of the outer window, also the access projection connected to the mid widow seating of the outer window is inserted to the access hole created at the medium window seating of the inner window, therefore the inner window and the outer window are tightly combined.
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