Novel bulletproof structure for human body protection and body armor
By employing a combination structure of ceramic, fiber, and rubber layers in the bulletproof vest, especially by filling the rubber layer with shear-thickening fluid as a buffer layer, the problem of blunt impact damage to the human body caused by the fiber backing plate is solved, thereby enhancing the bulletproof vest's penetration resistance and reducing blunt impact damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-19
AI Technical Summary
The fiber backing of existing bulletproof vests can cause injury to the human body due to blunt impact when subjected to impact, and the energy absorption effect of the fiber layer fails to fully utilize the energy absorption potential of the resin matrix.
The structure adopts a combination of ceramic layer, fiber layer and rubber layer. The rubber layer is filled with shear thickening liquid as a buffer layer, the fiber layer is made of cross-laminated UHMWPE fiber and aramid fiber, and the ceramic layer and fiber layer are bonded together by polymer adhesive.
The impact fiber laminate depth was reduced, enhancing its penetration resistance. The shear thickening fluid was used to harden the vest, increasing the contact area between the vest and the body and reducing blunt force trauma.
Smart Images
Figure CN224262362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective equipment technology, specifically to a novel bulletproof structure for human protection. Background Technology
[0002] With the advancement of science and technology and the increasingly tense international situation, bulletproof vests have become essential personal protective equipment for public security, military, and other organizations. However, with the increasing effectiveness of weapons in injuring and killing, how to improve the protective performance of bulletproof vests and reduce the blunt force trauma of the backplate has become a hot topic of concern and research for scholars both at home and abroad.
[0003] Current bulletproof vests mostly use a combination structure of ceramic plates and UHMWPE fibers. Although the fibers have excellent tensile and shear properties, their energy absorption mainly relies on fiber tension and shear fracture, failing to fully utilize the energy absorption effect of the resin matrix. Furthermore, the blunt impact effect of the fiber backing plate can still cause impact injuries to the human body. Therefore, a new type of bulletproof structure is needed to address these issues. Utility Model Content
[0004] The purpose of this invention is to provide a novel bulletproof structure for human protection, in order to solve one or more problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides a novel bulletproof structure for human protection, comprising a ceramic layer, a fiber layer, and a rubber layer stacked sequentially on top of each other, wherein the rubber layer is a rubber cavity and a buffer layer is filled inside the rubber cavity.
[0006] As a preferred and feasible approach, the buffer layer is a shear-thickening fluid filled within the rubber cavity.
[0007] As a preferred and feasible approach, the ceramic layer is a SiC ceramic panel.
[0008] As a preferred feasible approach, the thickness of the SiC ceramic panel is 5-10 mm.
[0009] As a preferred feasible method, the fiber layer is placed close to the inner side of the rubber layer, and is laid up by cross-lamination of UHMWPE fiber UD cloth and aramid fiber UD cloth, wherein the UHMWPE fiber UD cloth is 16-35 layers and the aramid fiber UD cloth is 16-35 layers.
[0010] As a preferred and feasible approach, adjacent UD fabric layers in the fiber layer are laid in a 90° staggered pattern.
[0011] As a preferred feasible approach, the thickness of the fiber layer ranges from 6 to 12 mm, and the thickness of the rubber cavity ranges from 5 to 10 mm.
[0012] As a preferred and feasible approach, the ceramic layer, fiber layer, and rubber layer are bonded together using a polymer adhesive.
[0013] This application also provides a bulletproof vest, including a carrier and the aforementioned novel bulletproof structure for human protection disposed on the carrier.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The bulletproof structure of this invention employs a ceramic layer, a fiber layer, and a rubber layer stacked on top of each other. By filling the rubber voids with a shear-thickening fluid as a buffer layer, it can reduce the back concavity depth in the impact direction of the fiber laminate, thereby enhancing the penetration resistance of the fiber laminate. On the other hand, after impact, the shear-thickening fluid hardens, increasing the contact area between the bulletproof vest and the human body, effectively reducing blunt force trauma to the human body after the bulletproof vest is impacted. Attached Figure Description
[0016] Figure 1 A schematic diagram of a novel bulletproof structure for human protection provided by this utility model;
[0017] Figure 2 This is a schematic diagram of the fiber layer in a novel bulletproof structure for human protection provided by this utility model. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] It should be noted that all uses of "first", "second", "third" and "fourth" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first", "second", "third" and "fourth" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.
[0020] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0021] like Figure 1-2 As shown, this utility model discloses a novel bulletproof structure for human protection, comprising a ceramic layer 1, a fiber layer 2, and a rubber layer 3 stacked sequentially. The rubber layer 3 is a rubber cavity filled with a buffer layer 4. This buffer layer 4 is a shear-thickening fluid filled within the rubber cavity. The fiber layer 2 is a fiber laminate. Therefore, the rubber cavity filled with shear-thickening fluid possesses unique mechanical properties. The shear-thickening fluid hardens under high-speed impact and remains in a soft, liquid state when not subjected to high-speed impact. The shear-thickening fluid in the rubber cavity serves as a buffer layer within the bulletproof structure's laminate. The fiber layer 2 is positioned close to the inner side of the rubber layer. This reduces the back-concavity depth of the fiber laminate in the impact direction, enhancing its penetration resistance. Furthermore, the hardening of the shear-thickening fluid after impact increases the contact area between the bulletproof vest and the human body, effectively reducing blunt force trauma from impacts.
[0022] It should be noted that ceramic layer 1 is a SiC ceramic panel with a thickness of 5-10mm. When penetrated by bullets or fragments, the SiC ceramic panel absorbs most of the kinetic energy of the penetrating object through ceramic fragmentation and friction between the ceramic fragments and the projectile or fragment, significantly reducing the penetration velocity of the penetrating object.
[0023] It should be noted that the thickness of the fiber layer in this application is 6-12 mm, and the thickness of the rubber cavity is 5-10 mm.
[0024] The fiber layer 2 of this invention comprises UHMWPE fiber UD fabric 201 and aramid fiber UD fabric 202, which are laid out in a cross-laminated manner, with the number of UHMWPE fiber UD fabric 201 and aramid fiber UD fabric 202 layers ranging from 16 to 35. The UHMWPE fiber UD fabric 201 and aramid fiber UD fabric 202 are bonded together with resin to form a target plate. Upon impact, due to the differences in tensile strength and elongation at break of the two fibers, as well as the differences in the bonding strength between the fiber layer and the rubber interface, the resin matrix first absorbs energy and breaks along the interface and fiber direction. The fibers then absorb more energy as they fracture under tension and shear, thus improving the protective performance of this novel composite structure bulletproof vest. The fiber layer of this application is a fiber laminate, which, due to its excellent tensile properties and good shear properties, effectively hinders the further penetration of bullets or fragments.
[0025] It should be noted that the ceramic layer, fiber layer, and rubber layer are bonded together using a polymer adhesive.
[0026] This utility model also provides a bulletproof vest, including a carrier and the aforementioned novel bulletproof structure for human protection disposed on the carrier. When using the bulletproof structure on a bulletproof vest, considering the curvature of the human body, the bulletproof structure can be made into an arc-shaped plate following the curvature of the human body, or it can be made into an irregularly shaped plate according to the specific needs of the human body.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A novel bulletproof structure for human protection, characterized in that, It includes a ceramic layer (1), a fiber layer (2) and a rubber layer (3) stacked sequentially on each other. The rubber layer (3) is a rubber cavity, and the rubber cavity is filled with a buffer layer (4).
2. A novel bulletproof structure for human protection according to claim 1, characterized in that, The buffer layer (4) is a shear thickening liquid filled in the rubber cavity.
3. A novel bulletproof structure for human protection according to claim 1, characterized in that: The ceramic layer (1) is a SiC ceramic panel.
4. A novel bulletproof structure for human protection according to claim 3, characterized in that: The thickness of the SiC ceramic panel ranges from 5 to 10 mm.
5. A novel bulletproof structure for human protection according to claim 1, characterized in that: The fiber layer (2) is set close to the inner side of the rubber layer and is laid out by cross-layering of UHMWPE fiber UD cloth (201) and aramid fiber UD cloth (202). The UHMWPE fiber UD cloth (201) has 16-35 layers and the aramid fiber UD cloth (202) has 16-35 layers.
6. A novel bulletproof structure for human protection according to claim 5, characterized in that, The fiber layer consists of two adjacent UD fabric layers laid in a 90° staggered pattern.
7. A novel bulletproof structure for human protection according to claim 6, characterized in that: The thickness of the fiber layer is 6-12 mm, and the thickness of the rubber cavity is 5-10 mm.
8. A novel bulletproof structure for human protection according to claim 7, characterized in that: The ceramic layer, fiber layer, and rubber layer are bonded together using a polymer adhesive.
9. A bulletproof vest, characterized in that, Includes a carrier, and a novel bulletproof structure for human protection as described in any one of claims 1-8 disposed on the carrier.