But during this process, the width of the chute on the door hole is unchanged, so that the rolling door will produce a lot of noise due to the shaking of the door during the rolling up or down process; we might as well try fast rolling door, fast rolling door Why is there no noise?

    That's because the noise-reducing fast rolling door has a door hole on the wall. The two sides of the door hole are provided with grooves for the door body to go up and down. The two side walls of the groove are equipped with airbags, and the outer side of the airbags are equipped with protective panels. , A chute for clamping the door body and allowing the door body to move up and down is formed between the two protection plates. 

    When the door body moves upwards, the width of the door body increases due to the squeezing and folding of two adjacent door panels. The door panels squeeze the protective panel outwards, and the protective panel squeezes the airbag outside, so that the protective panel and the door panel are always in close contact with each other. When the door body moves downward, the two adjacent door pieces stretch to reduce the width of the door body, and the airbag is elastic. Under the action, the protective plate is pushed so that the protective plate is close to the door, which also has the effect of reducing noise.

    An air nozzle is arranged on the airbag, and the air nozzle penetrates out of the wall. By adopting the above technical solution, it is convenient to inflate or deflate the airbag. The protective plate is L-shaped, one side fits 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 hole. On the one hand, it can protect the airbag, and on the other hand, it can play a guiding and assisting role in the deformation of the airbag. The inner side wall of the groove is provided with a limiting groove, and one side of the air bag is bonded in the limiting groove. Make the airbag more stable in the groove. A number of rubber spacers are evenly distributed along the length of the door. In the process of door winding, avoid the friction between the metal door pieces to generate noise.

    Beneficial effects:

1. When the door pieces are rolled up, the two adjacent layers of door pieces are separated by rubber spacers to avoid noise caused by friction between the door pieces

2. The airbag squeezes the door to prevent the door from shaking and colliding with the wall to produce noise

3. When the fast rolling door is opened or closed, the noise is small, providing a relatively quiet working or living environment;