過去的傳統卷簾門存在以下不足，門體一般由若干的門片呈波浪型折疊而成，由于門體啟閉過程中，相鄰的門片會相對折疊或伸展，從而使得門體的寬度發生變化，但是這過程中，門洞上的滑槽的寬度是不變的，從而使得卷簾門在卷起或放下的過程中，由于門片晃動會產生較大的噪音;我們不妨試試電動卷簾門，電動卷簾門就沒有噪音了?是因為什么?

The traditional rolling shutter door in the past has the following shortcomings: the door body is generally folded by several door pieces in a wave shape. During the opening and closing process of the door body, the adjacent door pieces will be folded or extended relatively, which will change the width of the door body. However, during this process, the width of the chute on the door opening is unchanged, so that the rolling shutter door will produce greater noise due to the shaking of the door pieces during the rolling up or down process; We might as well try the electric roller shutter door. Will the electric roller shutter door make no noise? Because of what?

那是因為，能降噪的電動卷簾門在墻體上設置有門洞，門洞的兩側設置有供門體上下升降的凹槽，凹槽內兩側壁設置有氣囊，氣囊的外側設置有防護板，兩個防護板之間形成用于夾持門體且供門體上下滑移的滑槽。

That is because the electric rolling shutter door that can reduce noise is provided with a door opening on the wall, both sides of the door opening are provided with grooves for the up and down lifting of the door body, both sides of the groove are provided with air bags, and the outside of the air bags is provided with protective plates. A chute is formed between the two protective plates to clamp the door body and allow the door body to slide up and down.

門體向上運動時，相鄰兩個門片由于擠壓折疊使得門體的寬度增加，門片向外擠壓防護板，防護板相外擠壓氣囊，使得防護板與門片始終保持緊貼狀態，使得門片和防護板之間因存在間隙很小不會碰撞產生噪音或者噪音很小，門體向下運動時，相鄰兩個門片伸展使得門體的寬度減小，氣囊在彈性作用下推動防護板，使得防護板緊貼門片，同樣起到減少噪音的效果。

When the door body moves upward, the width of the door body is increased due to the squeezing and folding of the two adjacent door sheets. The door sheets squeeze the protective plate outward, and the protective plate squeezes the air bag outward, so that the protective plate and the door sheet are always kept close to each other, so that there is a small gap between the door sheet and the protective plate, so that there will be no collision or very little noise. When the door body moves downward, the width of the door body is reduced due to the extension of the two adjacent door sheets, The airbag pushes the protective plate under the elastic action to make the protective plate close to the door, which also has the effect of reducing noise.

濟南卷簾門廠家提醒您，氣囊上設置有氣嘴，氣嘴穿出墻體外。通過采用上述技術方案，便于對氣囊進行充氣或放氣。防護板呈L型，一側貼合于氣囊與門體之間，另一側伸出凹槽外位于門洞的兩側。

Jinan roller shutter door manufacturer reminds you that there is an air nozzle on the air bag, and the air nozzle goes out of the wall. By adopting the above technical scheme, it is convenient to inflate or deflate the airbag. The protective plate is L-shaped, one side is fitted between the airbag and the door body, and the other side extends out of the groove and is located on both sides of the door opening.

一方面能夠對氣囊起到保護作用，另一方面，能夠對氣囊的形變起到導向輔助作用。凹槽的內側壁設置有限位槽，氣囊的一側粘接于限位槽內。使得氣囊在凹槽內更加穩定。門體沿其長度方向均布有若干橡膠制成的隔片。在門體收卷的過程中，避免金屬的門片之間摩擦產生噪音。

On the one hand, it can protect the airbag, on the other hand, it can guide and assist the deformation of the airbag. The inner wall of the groove is provided with a limit groove, and one side of the airbag is bonded in the limit groove. This makes the airbag more stable in the groove. The door body is uniformly distributed with a plurality of rubber spacers along its length direction. During the winding process of the door body, the friction between metal door plates shall be avoided to produce noise.

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