| 摘要 |
An arrangement of a sheet with an anti-mosquito surface is described which operates by being wound around a roller within a box-shaped enclosure at the upper horizontal edge of the door or window openings of a building. Vertical movement of the anti-mosquito sheet is achieved by gravity through a metal base frame on its lower edge which acts as a counterweight while the sheet is stabilised laterally without coming out of its lateral sliding guides owing to stabilising springs with elastic rings present at the desired intervals on the side edges on either side. A design is also described for lateral sliding guide profiles from a single section incorporated into the upper horizontal enclosing box without the aid of any fixings by simple insertion and tightening of the side buttons of the horizontal box frame into the lateral sliding guides for the anti-mosquito sheet. The same side buttons are the bases for the seating and rotation of the roller on which the anti-mosquito sheet is wound. |
