| 摘要 |
Two hinges (12, 12`) are joined to the top and bottom ends of a vertical screen frame section (8`) and to nearby horizontal door frame sections (4```, 4````). The width of the screen frame (8) is less than that of the door frame (4) so that the hinges can be fitted at a distance from the horizontal door frame sections. A spring (14) urging against the screen frame automatically closes the screen whether it is swung inwards or outwards, even when the door in the frame is closed. A cover (15) is provided for the gap between the door frame and screen. |
