High-transmittance, high-efficiency, sand-proof and rain-proof shutter
A kind of blinds, high-efficiency technology, applied in the direction of windows/doors, special equipment of doors/windows, building components, etc., can solve the problems of increasing ventilation, and achieve the effects of increasing ventilation, convenient operation and simple manufacturing process
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[0029] Such as Figure 1 to Figure 12 As shown, this specific embodiment adopts the following technical solutions: including a flange frame, the flange frame is composed of a lower end plate 1, an upper flange 2, a lower flange 3, a left flange 4 and a right flange 5, the A shielding device is provided in the flange frame; the shielding device includes an upper front positioning piece 6 arranged on the top front side of the flange frame, an upper front slot 7 arranged on the upper front positioning piece 6, and an upper front slot 7 arranged on the front side of the flange frame. The upper rear positioning piece 8 on the rear side of the top in the blue frame and the position opposite to the upper front positioning piece 6, the upper rear slot 9 arranged on the upper rear positioning piece 8, the upper rear slot 9 arranged on the bottom front side in the flange frame and connected to the upper The lower positioning piece 10 of the relative position of the front positioning pie...
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