A door curtain

[0018] Example 1 figure 1 As shown, a door curtain includes a door curtain body 1. The door curtain body 1 is fixed to a door frame or a wall through any fixing structure 2, such as figure 1 The inner side of the door curtain body 1 is provided with a number of magnetic parts 11. The door curtain body 1 is divided into two parts. The two magnetic parts 11 arranged at corresponding positions in different parts have opposite polarities, and the two magnetic parts 11 arranged in the same part There are 12 pieces of memory metal between the pieces 11. The magnetic piece 11 includes at least two counterweight magnetic pieces 111 respectively arranged at the lower corners of the inner side of the door curtain body 1. The door curtain also includes a matching piece 3. When the door curtain body 1 is in the open state, the matching member 3 provides the counterweight magnetic block 111 with a restoring force toward each other. The material of the memory metal 12 is not limited. It can be a nickel-titanium alloy material or a simple metal material. The key is to balance its deformation reset force and the magnetic force. At the beginning, the magnetic part 11 needs to be separated to a certain distance. It is convenient for people to enter, so at this time because the deformation is not large, the deformation resetting force is also small, which is convenient for opening the curtain, but when the curtain is opened to a certain opening angle, the resetting force increases, and at this time, there is no magnetic force in time, and it can provide A certain restoration effect. When the restoration distance meets the conditions, the magnetic force increases and the door curtain is completely closed. In this way, a very good restoration effect can be achieved. The most important thing is that the door curtain will age in time under long-term use. , It will not cause too much impact on use.

[0019] Reference figure 2 with image 3 As shown, the fitting 3 is fixed on the ground 4 and a positioning magnetic block 31 is embedded in the fitting 3. When the door curtain body 1 is in the closed state, the positioning magnetic block 31 is located directly below the counterweight magnetic block 111. This arrangement can achieve a better recovery effect. The weight magnetic block 111 can ensure that the door curtain will not be easily deformed and curled, and secondly, the positioning magnetic block 31 can attract the weight magnetic block 111 so that the two weights The magnetic blocks 111 move towards each other to make it easier to close without affecting the opening.

[0020] Example 2 Reference figure 2 As shown, the fitting piece 3 is arranged in a strip shape and its length is equal to the width of the door frame, and the fitting piece 3 is adhered to the ground 4 under the door curtain body 1. It is fixed by bonding and will not affect its use.

[0021] Example 3 Reference image 3 As shown, the bottom surface below the door curtain body 1 is provided with a groove, and the mating member 3 is embedded in the groove. The shape of the groove is not limited.