Rigid-flexible bulletproof plugboard

Abstract

The utility model discloses a soft and hard combined type bulletproof plugboard which comprises a composite fiber layer which is of a multi-layer stacked structure and forms a soft protection area through interlayer binding force. The ceramic chip layer is arranged in the composite fiber layer and fixedly connected with the composite fiber layer, and the ceramic chip layer and the composite fiber layer form a soft and hard combined protection area through a curved surface. And the waterproof jacket is coated between the surface of the ceramic chip layer and the bottom surface of the composite fiber layer and is in vacuum sealing connection with the ceramic chip layer and the composite fiber layer, and the edge part of the waterproof jacket is bonded with the edge part of the composite fiber layer. The crack arrest layers are arranged on the two surfaces of the waterproof sleeve and attached to the waterproof sleeve, and fragments in the ceramic chip layer are prevented from splashing and disengaging. According to the bulletproof flashboard, the interlayer bonding strength and stress transfer uniformity are improved, the protection area is enlarged on the basis of a lightweight structure, the situation that the ceramic chips splash or break away after the bulletproof flashboard is bounced can be avoided through the crack arrest layer, and the protection performance of the bulletproof flashboard is improved.

Description

Technical Field

[0001] This utility model relates to the field of bulletproof insert technology, and in particular to a soft and hard combined bulletproof insert. Background Technology

[0002] Bulletproof vests are used to protect the human body from bullets or shrapnel. Common types include pure soft bulletproof vests and hard plate bulletproof vests.

[0003] Purely soft bulletproof vests, such as those made of aramid II / III multilayer fabrics or ultra-high molecular weight polyethylene multilayer fabrics, suffer from low protection levels and excessive thickness. Hard-plate bulletproof vests, made of polymer materials or ceramic composite plates, have drawbacks such as heavy weight (≥2.5kg / piece) and stiffness when worn. Current technology involves placing the soft bulletproof vest liner inside the outer vest, making the entire area with the liner insufficient for protection against high-level rifle bullets. Therefore, adding hard bulletproof plates improves the protection level, or adding hard bulletproof plates to the front of the soft bulletproof vest liner, so that the area with the hard bulletproof plates provides protection at levels 4, 5, and 6 of the GA141-2010 police bulletproof vest standard, and levels III and IV of NI J0101.06.

[0004] However, the combination structure of soft bulletproof vests and hard bulletproof plates often adopts a simple stacking method, which has problems such as insufficient interlayer bonding strength and uneven stress transmission, resulting in a decrease in protective performance. In addition, the overall weight of the combined structure is relatively heavy and the protective area is relatively small. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a combined hard and soft bulletproof insert, which simplifies the structure and reduces the weight of the bulletproof insert by using a composite fiber layer, a ceramic sheet layer, a waterproof sleeve, and a crack-resistant layer.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A combination of rigid and flexible bulletproof inserts, comprising:

[0008] The composite fiber layer is a multi-layered stacked structure used to form a soft protective zone through interlayer bonding forces.

[0009] The ceramic sheet is set in the composite fiber layer and fixedly connected to the composite fiber layer, and is used to form a soft and hard bond protective area with the composite fiber layer through the curved surface.

[0010] A waterproof sleeve is wrapped between the surface of the ceramic sheet and the bottom of the composite fiber layer, and is vacuum-sealed with the ceramic sheet and the composite fiber layer. Its edges are bonded to the edges of the composite fiber layer.

[0011] The crack-resistant layer is applied to both surfaces of the waterproof sleeve and adheres to it to prevent fragments from splashing or detaching from the ceramic sheet layer.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] These bulletproof inserts combine lightweight design with a high level of protection. The composite fiber layer and ceramic sheet layer are combined to improve interlayer bonding strength and stress transfer uniformity. While maintaining a lightweight structure, the protective area is also expanded. A crack-resistant layer prevents ceramic sheets from scattering or detaching after impact, further enhancing the bulletproof insert's protective performance. A waterproof sleeve protects the insert from sunlight, preventing it from affecting its ballistic performance. Through optimized composite materials of soft and hard materials, multiple functions including impact resistance, crack resistance, and waterproofing are integrated into one product.

[0014] More preferably, the composite fiber layer comprises multiple ADG sheets and multiple UD sheets, with each ADG sheet and each UD sheet stacked alternately, and each ADG sheet and each UD sheet bonded together.

[0015] Using the above technical solution, during the preforming process, ADG sheets and UD sheets are alternately stacked to form a multi-layer composite fiber structure, which enhances the interlayer bonding force of the fiber cloth layers.

[0016] Further preferably, the ADG sheet is made of aramid fiber woven fabric, and the UD sheet is made of polyethylene fiber woven fabric.

[0017] By employing the above technical solution, both aramid fiber woven fabrics possess high tensile strength and good uniformity, ensuring that the fiber quality meets bulletproof standards. The alternating stacking of aramid fiber woven fabrics and polyethylene fiber woven fabrics improves the bonding and strength of the interlayer structure, and also enhances the ballistic performance of the composite fiber layer.

[0018] A further preferred embodiment is that the ceramic sheet layer comprises multiple ceramic sheets, each seamlessly joined together.

[0019] By adopting the above technical solution, the ceramic sheets are formed into an integral structure, which reduces or even avoids the splashing or falling of fragments when subjected to impact.

[0020] Further optimization involves the ceramic sheet surface being any one of a single-curved surface, a hyperboloid, or a multi-curved surface.

[0021] Using the above technical solutions, single-curved, double-curved, and multi-curved ceramic sheets can form a variety of flexible hard interlayer structures. These structures weaken the impact of bullets through the curved surfaces. When combined with composite fiber layers, these hard interlayer structures form a soft-hard combined bulletproof insert area, improving the bulletproof performance of the bulletproof insert.

[0022] Further optimization involves placing the ceramic sheet layer between adjacent single-layer ADG sheets and single-layer UD sheets, and bonding it in composite with the ADG sheets and UD sheets.

[0023] By adopting the above technical solution, a protective area with a combination of hard and soft is achieved between the ceramic sheet clip and the interlayer structure.

[0024] Further optimization involves placing ceramic sheets within single-layer ADG sheets and single-layer UD sheets, with the top surface bonded to the waterproof sleeve.

[0025] By adopting the above technical solution, a protective area with both soft and hard properties is formed by combining ceramic sheets with a single-layer composite fiber layer.

[0026] Further optimization involves connecting the waterproof sleeve, ceramic sheet, and composite fiber layer via sub-vacuum thermopressing.

[0027] By adopting the above technical solution, the soft and hard combined bulletproof insert is placed in a vacuum environment for a long time, which can better protect the interlayer structure from the influence of the environment and light to prevent damage to its bulletproof performance.

[0028] Further optimization involves using high-strength aramid fiber for the crack arresting layer.

[0029] The above technical solution enhances the overall ballistic protection performance of the bulletproof insert and prevents ceramic fragments from flying or detaching.

[0030] Further optimization is needed, where the weight percentage of UD sheet is ≥40%.

[0031] By adopting the above technical solution, the weight of the bulletproof inserts has been significantly reduced. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this embodiment.

[0033] Figure 2 This is a schematic diagram of the explosion structure in this embodiment.

[0034] Figure 3 This is the main view structure diagram of this embodiment.

[0035] Figure 4 This is a structural diagram of the composite of ceramic sheets and ADG sheets in this embodiment.

[0036] Figure 5 This is a structural diagram of the UD sheet in this embodiment.

[0037] Figure 6 This is a structural diagram of the ceramic sheet layer in this embodiment.

[0038] Figure 7This is a partial structural diagram of the waterproof sleeve in this embodiment.

[0039] Figure reference numerals: 1-Composite fiber layer; 11-ADG sheet; 12-UD sheet; 2-Ceramic sheet; 3-Waterproof sleeve; 4-Crack-resistant layer. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1-7 This utility model will be described in further detail.

[0041] A type of bulletproof insert combining hard and soft materials, such as Figure 1 As shown, it includes:

[0042] Composite fiber layer 1 is a multi-layer stacked structure used to form a soft protective zone through interlayer bonding forces.

[0043] The ceramic sheet layer 9 is disposed in the composite fiber layer 1 and is fixedly connected to the composite fiber layer 1. It is used to form a soft and hard bond protection area with the composite fiber layer 1 through the curved surface.

[0044] The waterproof sleeve 3 is wrapped between the surface of the ceramic sheet layer 9 and the bottom surface of the composite fiber layer 1, and is vacuum-sealed with the ceramic sheet layer 9 and the composite fiber layer 1. Its edge is bonded to the edge of the composite fiber layer 1.

[0045] The crack-resistant layer 4 is set on both surfaces of the waterproof sleeve 3 and is attached to the waterproof sleeve 3 to prevent fragments from splashing and detaching from the ceramic sheet layer 9.

[0046] This bulletproof insert combines lightweight design with a high level of protection. The composite fiber layer 1 and ceramic sheet layer 9 are combined to improve interlayer bonding strength and stress transfer uniformity. While maintaining a lightweight structure, the protective area is also expanded. The crack-resistant layer 4 prevents ceramic sheets from scattering or detaching after impact, enhancing the insert's protective performance. The waterproof sleeve 3 protects the insert from sunlight, preventing it from affecting its bulletproof performance. Through optimized composite materials of soft and hard materials, it achieves a multi-functional integration of impact resistance, crack resistance, and waterproofing.

[0047] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the composite fiber layer 1 includes multiple layers of ADG (aramid woven fabric, hereinafter referred to as ADG) sheets and multiple layers of UD (polyethylene unidirectional fabric, hereinafter referred to as UD) sheets. Each layer of ADG sheet 11 and each layer of UD sheet 12 are alternately stacked together, and each layer of ADG sheet 11 and each layer of UD sheet 12 are bonded together. During the preforming process, the alternating stacking of ADG sheet 11 and UD sheet 12 forms a multi-layer composite fiber structure, enhancing the interlayer bonding force of the fiber fabric layers.

[0048] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, ADG sheet 11 is made of aramid fiber woven fabric, and UD sheet 12 is made of polyethylene fiber woven fabric. Both aramid fiber woven fabric and polyethylene fiber woven fabric possess high tensile strength and good uniformity, ensuring that the fiber quality meets bulletproof standards. The alternating stacking of aramid fiber woven fabric and polyethylene fiber woven fabric improves the bonding and strength of the interlayer structure, and also enhances the ballistic performance of the composite fiber layer 1.

[0049] Specifically, such as Figure 1 , Figure 2 as well as Figure 6 As shown, in this embodiment, the ceramic sheet layer 9 includes multiple ceramic sheets, which are seamlessly spliced ​​together to form an integral structure, reducing or even preventing fragments from flying or falling off when subjected to impact.

[0050] Specifically, such as Figure 1 , Figure 2 as well as Figure 6 As shown, in this embodiment, the surface of the ceramic sheet 9 can be any one of a single curved surface, a double curved surface, or a multi-curved surface. The single curved surface, double curved surface, and multi-curved surface of the ceramic sheet 9 can form a variety of flexible hard interlayer structures. The curved surface can be used to weaken the impact force of the bullet. After the hard interlayer structure is combined with the composite fiber layer 1, it forms a soft and hard combined bulletproof insert area, which improves the bulletproof performance of the bulletproof insert.

[0051] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the ceramic sheet layer 9 is disposed between adjacent single-layer ADG sheet 11 and single-layer UD sheet, and is compositely bonded with ADG sheet 11 and UD sheet 12, so as to realize the formation of a soft and hard bonded protective area between the ceramic sheet clamp and the interlayer structure.

[0052] Specifically, such as Figure 1 , Figure 2 as well as Figure 7 As shown, in this embodiment, the ceramic sheet layer 9 is respectively disposed in the single-layer ADG sheet 11 and the single-layer UD sheet, and the top surface is bonded to the waterproof sleeve 3, so as to realize the combination of ceramic sheet and single-layer composite fiber layer 1 to form a soft and hard protective area.

[0053] Specifically, such as Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, in this embodiment, the waterproof sleeve 3 is connected to the ceramic sheet layer 9 and the composite fiber layer 1 by sub-vacuum hot pressing, so that the soft and hard combined bulletproof insert is placed in a vacuum environment for a long time, which can better protect the interlayer structure from the influence of the environment and light and thus prevent damage to its bulletproof performance.

[0054] Specifically, such as Figure 1 , Figure 2 as well as Figure 3 As shown, in this embodiment, the crack-stopping layer 4 is made of high-strength aramid fiber, which enhances the overall bulletproof performance of the bulletproof insert and prevents ceramic fragments from flying or detaching.

[0055] Specifically, in this embodiment, the weight of the UD sheet 12 accounts for ≥40%, which significantly reduces the overall weight of the bulletproof insert.

[0056] Please combine Figures 1-7 The preparation process of this embodiment is described as follows:

[0057] Preparation of composite fiber layer 1

[0058] After initial processing at the yarn processing plant, aramid fibers and high-strength polyethylene fibers undergo tension and uniformity tests to ensure that the fiber quality meets standards. Using a shuttle loom, the aramid and PE fibers are woven into woven fabric structures of the required weight according to the necessary process requirements, resulting in ADG woven fabric and UD woven fabric.

[0059] The ADG roll (aramid woven fabric) and PE UD roll (polyethylene unidirectional fabric) are cut into multi-layer structure sheets of preset size using CNC cutting equipment to obtain ADG sheet 11 and UD sheet 12.

[0060] Preformed fiber fabric laminate

[0061] The cut ADG sheet 11 and PE UD sheet 12 are stacked alternately to form a multi-layer composite fiber structure.

[0062] Local cold pressing and micro hot pressing

[0063] First, the protective insert is pressurized and shaped using conventional cold pressing technology. Then, it is cold pressed at low temperature, where the low temperature is room temperature and the pressure is 16Mpa-20Mpa. Most of the middle area is slightly hot-pressed at a temperature of 60-80℃ and a pressure of 20-25Mpa to achieve localized enhancement of the interlayer bonding force of the fiber.

[0064] Rigid-soft composite insert preparation

[0065] Multiple ceramic sheets, including silicon carbide, alumina, boron carbide, silicon nitride, and titanium boride, are obtained and seamlessly spliced ​​together using high-strength adhesive to form a single-curved / double-curved / multi-curved structure. This structure is then bonded to a composite fiber layer 1 to form the protective area of ​​a hard bulletproof insert with a combination of soft and hard materials.

[0066] Waterproof sleeve 3 vacuum heat seal

[0067] First, the soft and hard combined bulletproof inserts are placed into a waterproof cloth bag. At the same time as sealing the bag, a vacuum pump is used to extract the air inside, so that the soft and hard combined bulletproof inserts form a sub-vacuum environment inside the waterproof bag 3, thereby better protecting the fibers from damage.

[0068] Aramid anti-crack layer 4: Aramid anti-crack fabric is attached to the outer wall of the waterproof sleeve 3 to inhibit the spread and detachment of fragments.

[0069] In summary, this embodiment achieves multi-functional integration of impact resistance, fragmentation prevention, and waterproofing through optimized composite of soft and hard materials, specifically reflected in the following aspects:

[0070] The composite fiber layer 1 is prepared by distribution, which has the characteristics of light weight, takes into account both the structural stability of the fiber layer and the interfacial bonding strength, and avoids the deterioration of PE material performance caused by high temperature.

[0071] Multiple ceramic pieces are seamlessly spliced ​​to form a curved protective area, which conforms to the ergonomic design, enhances the interlayer bonding of the rigid insert and its ability to resist multiple impacts, thereby improving the protective performance;

[0072] The waterproof sleeve 3-position bulletproof insert provides a good vacuum environment. Combined with the structure of the crack-prevention layer 4, it prevents ceramic fragments from flying and detaching after being hit by a bullet, thereby improving the resistance to multiple bullets of the soft and hard combined bulletproof insert.

[0073] This specific embodiment is merely an explanation of the utility model and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection of this utility model.

Claims

1. A combination of rigid and flexible bulletproof inserts, characterized in that, include: The composite fiber layer (1) is a multi-layer stacked structure used to form a soft protective area through interlayer bonding force; A ceramic sheet (2) is disposed in the composite fiber layer (1) and fixedly connected to the composite fiber layer (1) to form a soft and hard bond protective area with the composite fiber layer (1) through the curved surface; A waterproof sleeve (3) is wrapped between the surface of the ceramic sheet (2) and the bottom surface of the composite fiber layer (1), and is vacuum sealed to the ceramic sheet (2) and the composite fiber layer (1), with its edge part bonded to the edge part of the composite fiber layer (1). The crack-resistant layer (4) is disposed on both surfaces of the waterproof sleeve (3) and is attached to the waterproof sleeve (3) to prevent fragments from splashing and detaching from the ceramic sheet layer (2).

2. The soft-hard combined bulletproof insert according to claim 1, characterized in that, The composite fiber layer (1) includes multiple ADG sheets (11) and multiple UD sheets (12), with each ADG sheet (11) and each UD sheet (12) stacked alternately, and each ADG sheet (11) and each UD sheet (12) are bonded together.

3. The soft-hard combined bulletproof insert according to claim 2, characterized in that, The ADG sheet (11) is made of aramid fiber woven fabric, and the UD sheet (12) is made of polyethylene fiber woven fabric.

4. The soft-hard combined bulletproof insert according to claim 1, characterized in that, The ceramic sheet layer (2) comprises multiple ceramic sheets, each of which is seamlessly joined together.

5. The soft-hard combined bulletproof insert according to claim 2, characterized in that, The surface of the ceramic sheet (2) can be any one of a single curved surface, a hyperboloid, or a multi-curved surface.

6. The soft-hard combined bulletproof insert according to claim 2, characterized in that, The ceramic sheet layer (2) is disposed between adjacent single-layer ADG sheet (11) and single-layer UD sheet, and is compositely bonded to ADG sheet (11) and UD sheet (12).

7. The soft-hard combined bulletproof insert according to claim 2, characterized in that, The ceramic sheet layer (2) is respectively disposed in the single layer of ADG sheet (11) and the single layer of UD sheet, and the top surface is bonded to the waterproof sleeve (3).

8. The combined hard and soft bulletproof insert according to claim 1, characterized in that, The waterproof sleeve (3) is connected to the ceramic sheet layer (2) and the composite fiber layer (1) by sub-vacuum thermo-pressing.

9. The combined hard and soft bulletproof insert according to claim 1, characterized in that, The crack-stopping layer (4) is made of high-strength aramid fiber.

10. The soft-hard combined bulletproof insert according to claim 2, characterized in that, The UD sheet accounts for ≥40% of the total weight.

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