Multi-layer bulletproof roller shutter

Abstract

The utility model relates to a roller shutter. A multi-layer bulletproof roller shutter comprises a reel pipe, a plurality of layers of curtain cloth are installed on the reel pipe, at least one layer of curtain cloth is bulletproof curtain cloth, and the flexible bulletproof curtain cloth absorbs energy of bullets or fragments through deformation under impact of the bullets or the fragments. The utility model provides a multi-layer bulletproof roller shutter which is simple in structure, capable of meeting various requirements of users on curtains, good in bulletproof effect and high in safety. The technical problems that in the prior art, a roller shutter only has one choice, various use requirements of people for the roller shutter cannot be met, large external impact force cannot be effectively prevented, and personal safety cannot be protected are solved.

Description

Technical Field

[0001] The utility model relates to a rolling curtain, in particular to a bulletproof rolling curtain equipped with multi-layer curtain fabrics. Background Art

[0002] In existing offices or homes, curtains are generally installed by the windows to block light or keep out the cold. There are many styles of curtains now, including curtains that are pulled open to both sides and roller blinds that are pulled up and down. On the traditional curtain body, generally only one roller blind layer is set, and the roller blind layer will use different materials according to different usage occasions. However, the roller blind layer of a single material cannot meet the different usage needs of users when in use; for example: if the roller blind layer is a single mesh or translucent fabric or fiber material layer, it cannot meet the user's need to completely block light; if the roller blind layer is a single thick opaque fabric or fiber material layer, it cannot meet the user's need for partial light transmission; if the roller blind layer is a single thermal insulation film for automobile or building glass, it only has the effect of heat insulation and ultraviolet light isolation, but does not have the effect of blocking light, and cannot meet people's reasonable needs for light brightness; therefore, the traditional single roller blind layer curtain obviously cannot meet people's different usage needs. Moreover, people now attach great importance to safety. Some bullets or fragments with high impact force may rush into the room and affect personal safety. Therefore, it is necessary to effectively prevent these accidental injuries from happening. Summary of the invention

[0003] The utility model provides a multi-layer bulletproof rolling curtain with a simple structure, which can meet various requirements of users for curtains, has good bulletproof effect and high safety; it solves the technical problems in the prior art that the rolling curtain has only one option, cannot meet various usage requirements of people for the rolling curtain, cannot effectively prevent large external impact forces, and cannot protect personal safety.

[0004] The above technical problem of the utility model is solved by the following technical solution: a multi-layer bulletproof rolling curtain, including a rolling tube, on which a multi-layer curtain is installed, at least one layer of the curtain is a bulletproof curtain, and the flexible bulletproof curtain absorbs the energy of the bullet or fragment by deformation under the impact of the bullet or fragment. A multi-layer curtain is installed on the rolling tube, and curtains with different functions or patterns can be arranged according to the user's preference. Each layer of curtain can absorb a part of the energy of the bullet or fragment, and the bulletproof curtain plays a major role. On the premise of completing the basic function of the curtain, it effectively blocks the impact of the bullet or fragment, converts the impact potential energy into the kinetic energy of the curtain, and improves safety. Allow users to stay indoors with peace of mind. At the same time, the cost will not increase a lot, and it is much cheaper than installing bulletproof glass, etc., and is suitable for most people.

[0005] Preferably, a counterweight is installed at the lower end of the curtain. The design of the counterweight can improve the energy absorption effect of the curtain.

[0006] Preferably, the counterweight is a bottom bar mounted at the bottom end of the curtain, and the kinetic energy of the bullet or fragment is converted into deformation of the curtain and acceleration of the bottom bar. The weight of the bottom bar is determined according to the energy of the bullet or fragment and the number of the curtain and the bottom bar.

[0007] Preferably, an energy absorbing unit is provided in the rolling curtain, which can further improve the buffering of the curtain against the impact force of bullets and the like, thereby improving the bulletproof effect.

[0008] Preferably, the energy absorbing unit comprises a roll tube end cap installed on both sides of the roll tube, and the roll tube end cap comprises an end cap body, a central axis is formed in the center of the end cap body, and an energy absorbing sheet is arranged in the center of the end cap body with the central axis as the center. The energy absorbing sheet is distributed in a spiral shape with the central axis as the center. When the roller blind is impacted, the spiral sheet in the center of the roll tube can effectively absorb energy and buffer the impact force of bullets or fragments. The roll tube end cap has a certain degree of softness and can be made of plastic or rubber.

[0009] Preferably, the outer circumferential surface of the rolling tube is provided with a plurality of slots, in which curtains are installed, and a gap is provided between two adjacent curtains. The curtains are installed through the slots, which has a simple structure and is convenient for replacement and adjustment. It is only necessary to put one end of the curtain into the slot. The gap between the curtains can play a buffering role, so that the bulletproof curtain can better absorb the potential energy of bullets and fragments, and complete the bulletproof function.

[0010] Preferably, the bulletproof curtain is made of ultra-high molecular weight polyethylene fiber material or aromatic polyamide organic fiber material.

[0011] Therefore, the multi-layer bulletproof roller shutter of the utility model has the following advantages: simple structure, multiple layers of curtains are installed on the roller tube through slots; the curtains of the multi-layer roller shutter can be replaced according to different usage requirements and can adapt to the usage requirements of various users; at least one layer of bulletproof curtain is installed in the curtain, which can absorb the impact energy of bullets and fragments well and protect the safety of people in the curtain, and the use cost is not high, and the original curtain installation structure is modified. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of a multi-layer bulletproof rolling curtain of the utility model.

[0013] Figure 2 yes Figure 1 Schematic diagram of the end face of the coiled tube.

[0014] Figure 3 yes Figure 1 Schematic diagram of the end of the rolled pipe with the bracket removed.

[0015] Figure 4 yes Figure 1 Schematic diagram of the coiled tube end cover inside. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] Example:

[0018] like Figure 1 and 2 As shown, a multi-layer bulletproof rolling curtain includes a rolling tube 4 made of an integral profile, and a plurality of slots 6 are provided on the outer circumferential surface of the rolling tube 4. According to the number of curtains 2 to be installed, a plurality of slots 6 are selected to install the curtains. Generally, three or four layers of curtains 2 can be installed, and the distances between the curtains 2 are equal, and the distance between adjacent curtains 2 is about 10 mm. The multi-layer curtains include at least one layer of bulletproof curtains, and the bulletproof curtains are made of ultra-high molecular weight polyethylene fiber material. A bottom rod 3 is installed at the bottom end of the curtain, and the bottom rod 3 is fixed to the curtain as a counterweight. The weight selection of the bottom rod 3 will be determined according to the energy of the bullet or fragments and the number of the cloth and the bottom rod.

[0019] like Figure 3 and 4 As shown, a coiling tube end cap 6 is provided at both ends of the coiling tube 4, and the coiling tube end cap 6 is fixed to the bracket 1 on both sides, and the bracket 1 is fixed to the wall or ceiling. The coiling tube end cap 6 includes a cylindrical end cap body 7, an annular outer disc 8 is formed at one end of the end cap body 7, a central axis 10 is integrally formed at the center of the outer disc 8, and a uniformly distributed spiral energy absorbing sheet 9 is formed in the end cap body 7 with the central axis 10 as the center. When the outer disc is deformed by impact, the central axis will deflect, and the spiral energy absorbing sheet will deform to meet the deflection of the central axis, buffering and absorbing shock.

[0020] The specific embodiments described herein are merely examples of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multi-layer bulletproof rolling curtain, comprising a rolling tube, Features: Multiple layers of curtains are installed on the roller tube, at least one layer of which is a bulletproof curtain. The flexible bulletproof curtain absorbs the energy of the bullet or fragments by deformation under the impact of the bullet or fragments. The outer circumferential surface of the roller tube is provided with a plurality of grooves, and curtains are installed in the grooves. A gap is provided between two adjacent curtains. The gap between the curtains can play a buffering role, allowing the bulletproof curtain to better absorb the potential energy of bullets and fragments.

2. A multi-layer bulletproof rolling curtain according to claim 1, Features: A counterweight is installed at the lower end of the curtain.

3. A multi-layer bulletproof rolling curtain according to claim 2, Features: The counterweight block is a bottom rod installed at the bottom end of the curtain, and the kinetic energy of the bullet or fragment is converted into the deformation of the curtain and the accelerated movement of the bottom rod.

4. A multi-layer bulletproof rolling curtain according to claim 1, Features: An energy absorbing unit is arranged inside the rolling curtain.

5. A multi-layer bulletproof rolling curtain according to claim 4, Features: The energy absorbing unit comprises a coiled tube end cover installed on at least one side of the coiled tube, the coiled tube end cover comprises an end cover body, a central axis is formed at the center of the end cover body, and an energy absorbing sheet is arranged at the center of the end cover body with the central axis as the center.

6. A multi-layer bulletproof rolling curtain according to any one of claims 1 to 5, Features: The bulletproof curtain is made of ultra-high molecular weight polyethylene fiber material or aromatic polyamide organic fiber material.

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