Flexible portable explosion protection device capable of being rapidly inflated, folded and unfolded

Abstract

The invention discloses a flexible portable explosion protection device capable of being rapidly inflated, folded and unfolded, and relates to the field of explosion impact protection. The device comprises a protection structure, a bracelet, an unlocking button and a gas generator, the protection structure is divided into a folded state and an unfolded state, the protection structure is in a cuboid or cylindrical shape in the folded state and covers the shoulders and the chest after being unfolded, and the gas generator releases gas to drive the protection structure to be rapidly unfolded by pressing the unlocking button; the protective structure is made of a fiber reinforced flexible resin composite material plate, and a high-storage-ratio design is realized by combining a Sanpu paper folding technology. According to the invention, the survivability of a protected object under the attack of unmanned aerial vehicle bombs or short-distance grenades and grenade fragments can be remarkably improved, and the device has the advantages of light weight, quick response, comprehensive protection and efficient storage.

Description

Technical Field

[0001] This invention belongs to the technical field of explosion impact protection, specifically relating to a flexible, rapidly inflatable, and expandable portable explosion protection device. Background Technology

[0002] With the rapid development of artificial intelligence technology, drones are increasingly used on the modern battlefield. Their precision strike capabilities and stealth significantly increase the risks and challenges faced by traditional combat personnel. In particular, the widespread adoption of small attack drones and swarm tactics further increases the risk of exposure for protected targets on the battlefield, greatly enhancing the difficulty of defense. Furthermore, individual soldiers often face multiple threats in close-quarters combat, such as grenade explosions and their fragments, placing higher demands on the comprehensive defensive capabilities of protective equipment.

[0003] Currently, although some protective equipment exists for defending against drone bombs or close-range grenade / hand grenade fragmentation attacks, this equipment is generally bulky and inconvenient to carry, severely limiting the mobility and operational flexibility of the protected targets. Furthermore, the structural design of existing protective equipment is relatively simple, typically relying on a single composite material protective plate. While effective against bomb fragments, its protection against blast waves is very limited, failing to provide comprehensive and effective protection. At the same time, traditional protective devices have a slow response speed to sudden threats, making it difficult to meet the rapid response requirements of the modern battlefield. Whether defending against drone bomb attacks or protecting against close-range grenade explosions, protected targets urgently need a lightweight, portable, and easy-to-install protective device to achieve rapid deployment and effectively counter the dual threats of fragmentation and blast waves. However, current technology lacks a protective solution that can balance lightweight design, rapid deployment, and high-efficiency protective performance. Therefore, developing a portable protective device that can be rapidly deployed in a short time while possessing excellent protective capabilities has become a key requirement for addressing the threats of drones and close-range explosives on the modern battlefield. Summary of the Invention

[0004] This invention addresses the problems of existing protective equipment being bulky, having insufficient protective performance, and slow response speed when dealing with attacks from drone bombs or close-range grenades and hand grenade fragments. It proposes a flexible, rapidly inflatable, and portable explosion protection device. Through optimized structural design and material selection, it significantly improves the survivability of the protected object on the battlefield.

[0005] This invention provides a flexible, rapidly inflatable, and foldable portable explosion protection device, comprising: a protective structure, a wristband, an unlocking button, and a gas generator. The protective structure is divided into a folded state and an unfolded state. The gas generator is built into the protective structure in the folded state and is used to drive the protective structure to quickly unfold from the folded state to the unfolded state. The unlocking button is fixed on the wristband, and the wristband is in close contact with the forearm of the protected object.

[0006] Furthermore, the protective structure is rectangular or cylindrical in the folded state.

[0007] Furthermore, the protective structure is rectangular or cylindrical in its unfolded state.

[0008] Furthermore, the gas generator contains a material capable of decomposing to generate gas, which can rapidly decompose to generate high-pressure gas after the unlock button is pressed.

[0009] Furthermore, the protective structure is made of fiber-reinforced flexible resin composite material.

[0010] Furthermore, the protective structure is provided with a limit cable inside to limit the shape of the protective structure in its deployed state.

[0011] Furthermore, the protective structure in its folded state is re-folded by cutting and reconnecting composite material plates using a Miura origami structure. The creases are defined by a unit cell array, and the geometric parameters of the Miura origami structure satisfy the following relationship:

[0012] in, , , , The angle between adjacent creases in a single cell. , , , This represents the length of the crease in a single cell.

[0013] Furthermore, by adjusting the parameters It is possible to obtain single-cell Miura origami structures with different storage ratios, parameters The range of values ​​is: 80° < <90°.

[0014] Furthermore, the protective structure has hollow, highly elastic rubber sealing tubes pre-embedded at key joint positions of each folding unit, distributed along the fold lines. The sealing tube is connected to the main gas chamber of the gas generator through a micro ventilation channel, ensuring that when the gas generator is started and fills the main gas chamber, high-pressure gas can flow in and fill the sealing tube synchronously. When the protective structure is in a folded state, the sealing tube is flattened; during the inflation process, the internal air pressure of the sealing tube rises rapidly, causing it to expand radially and actively compress and seal the fold gaps from the inside.

[0015] Furthermore, an alternative sealing solution is provided: the main air chamber of the gas generator is itself an integral air capsule, encapsulated inside the protective structure; during inflation, the air capsule expands directly, thus eliminating the need for a separate hollow, highly elastic rubber sealing tube.

[0016] The beneficial effects of this invention are: This invention provides a flexible, rapidly inflatable, and foldable portable explosion protection device. First, by using fiber-reinforced flexible resin composite material, the weight of the protection device is significantly reduced, making it easy for the protected object to carry and improving mobility and operational flexibility. Second, a gas generator drives the protective structure to unfold rapidly, enabling quick deployment of the protection device and completing protective preparation in a short time. Third, the innovative structural design not only effectively protects against bomb fragments but also significantly resists blast shock waves, providing more comprehensive protection. Finally, by incorporating Miura origami techniques, a high-density folding design is achieved, facilitating carrying and storage, further enhancing the operational flexibility and adaptability of the protected object. In summary, the technical solution of the present invention has significant advantages in terms of lightweight, rapid response, comprehensive protection and efficient storage, and can effectively improve the survivability of protected objects in modern battlefield environments. Attached Figure Description

[0017] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 The protective object of this invention is shown in a standby folded state diagram, perspective view, front view, and top view, according to one embodiment of the invention. Figure 2 This invention provides a diagram, perspective view, front view, and top view showing the protective object in its operational state according to one embodiment of the invention. Figure 3 for Figure 2 Schematic diagram of the internal limiting cable arrangement of the central protective structure in its deployed state; Figure 4 A diagram, perspective view, front view, and top view of the protective object in standby folded state according to another embodiment of the present invention; Figure 5 The protective object of another embodiment of the present invention is shown in standby unfolded state diagram, perspective view, front view and top view; Figure 6 for Figure 5A schematic diagram of the internal limit cable arrangement in the deployed state of the protective structure; Figure 7 The diagram shows the creases and unit cell diagram of the protective structure of the present invention.

[0019] In the diagram: 1-protective structure; 2-wristband; 3-unlock button; 4-gas generator; 5-upper bottom surface; 6-lower bottom surface; 7-limiting cable. Detailed Implementation

[0020] The following are specific embodiments of the present invention, described in conjunction with the accompanying drawings, to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0022] The technical solution described in this invention aims to realize a flexible, rapidly inflatable, and deployable portable explosion protection device. Its core objective is to provide lightweight, rapid-response, and comprehensive protective equipment through optimized structural design and material selection. For example... Figures 1-6 As shown, the protective device consists of a protective structure 1, a wristband 2, an unlock button 3, and a gas generator 4. The protective structure 1 has a folded state and an unfolded state. The gas generator 4 is built into the protective structure 1 in the folded state. The unlock button 3 is fixed on the wristband 2. The wristband 2 is close to the forearm of the protected object to ensure a stable connection.

[0023] The protective structure 1 is made of aramid fiber reinforced flexible resin composite board or PE board. This material is lightweight and high-strength, which can significantly reduce the overall weight of the protective device. The gas generator 4 contains solid sodium azide. After pressing the unlock button 3, the sodium azide decomposes rapidly to generate a large amount of nitrogen gas, which drives the protective structure 1 to quickly unfold from the folded state to the unfolded state. This process ensures that the protected object can complete the protection preparation in a short time, thereby responding to sudden threats.

[0024] When the protected object is not attacked by drone bombs or close-range grenade or hand grenade fragments, the protective structure 1 is in a folded state, and the protective structure is in a cuboid or cylindrical shape in the folded state. For example... Figure 1As shown, the folded protective structure 1 is rectangular, with a length of 18-22 cm, a width of 8-12 cm, and a thickness of 3-5 cm. This size design fully considers the characteristics of males aged 18 to 25, whose forearm length is approximately 25 cm and hand width is approximately 9 cm, ensuring that the device is easy to carry and does not affect the normal activities of the protected individual. Figure 3 As shown, the protective structure 1 in the folded state is cylindrical, with a bottom diameter of 18-22 cm and a radial thickness of 3-5 cm.

[0025] The wristband 2 is made of elastic material, allowing it to fit snugly against the forearm of the person being protected and to be quickly adjusted for tightness when needed. The unlock button 3 is located on the outside of the wristband 2, making it easy for the person being protected to press with their thumb or other fingers. The gas generator 4 is embedded inside the protective structure 1 and fixed at its geometric center, ensuring uniform pressure distribution during gas release and preventing deployment failure or reduced protective effectiveness due to excessive local pressure.

[0026] When the protected object is attacked by a drone or close-range grenade / hand grenade fragments, pressing the unlock button 3 on the wristband 2 triggers the gas generator 4. The sodium azide solid inside the gas generator 4 rapidly decomposes to generate a large amount of nitrogen gas. This nitrogen gas is evenly distributed inside the protective structure 1 through built-in pipes, driving the protective structure 1 to rapidly deploy along a predetermined path. In the deployed state, the protective structure is rectangular or cylindrical. Figure 2 As shown, the protective structure 1 in its unfolded state is rectangular, with its upper base 5 and lower base 6 being squares, each with a side length of 55-65 cm and a radial thickness of 8 cm; Figure 4 As shown, the protective structure 1 in its unfolded state is cylindrical, with a diameter of 60-70 cm and a radial thickness of 10-15 cm.

[0027] Once deployed, the protective structure 1 completely covers critical areas such as the shoulders and chest of the protected object, providing comprehensive protection. The protective material of the protective structure 1 is an aramid fiber-reinforced flexible resin composite board or a PE board. These materials possess excellent tensile strength, impact resistance, and abrasion resistance, providing reliable protection under extreme conditions. Furthermore, the flexible resin composite material exhibits good flexibility and deformability, allowing the protective structure 1 to rapidly undergo large-area out-of-plane deformation upon impact, effectively dispersing and dissipating impact energy, preventing the generation and propagation of localized cracks in the impact area, and thus maintaining the integrity and functionality of the material.

[0028] The deployed protective structure 1 can effectively withstand fragments from drone bombs or close-range grenades and hand grenades, and can also buffer the blast shock wave through internal gas. The front and rear plates of the protective structure 1 serve as the main protective layers, directly blocking the impact of bomb fragments; while the internal gas acts as a buffer medium, absorbing and dispersing the energy of the blast shock wave, thereby reducing the damage caused to the protected object. Furthermore, the nitrogen gas released by the gas generator 4 is chemically stable, non-flammable and non-explosive, and highly safe to use. Nitrogen gas is abundant in the air, easy to produce, and inexpensive, making it suitable for large-scale applications.

[0029] The present invention further proposes to provide a limiting cable 7 inside the protective structure to limit the shape of the protective structure in its deployed state; such as Figure 3 As shown, when the protective structure is deployed, it takes the shape of a cuboid, and the limiting cable 7 is arranged diagonally along the cuboid; as Figure 6 As shown, when the protective structure is unfolded, it forms a cylinder, and the limiting cable 7 is set at equal angles in the radial direction of the cylinder.

[0030] Specifically, in this invention, the protective structure 1 in its folded state is reconnected and folded using a Miura origami structure cut composite material plate, as shown below. Figure 7 As shown, the creases are defined by a unit cell array, and the geometric parameters of the Miura origami structure satisfy the following relationship:

[0031] in, , , , The angle between adjacent creases in a single cell. , , , This refers to the unit cell crease length. Adjust the parameters... It is possible to obtain single-cell Miura origami structures with different storage ratios, parameters The range of values ​​is: 80° < With a folding angle of less than 90°, the protective structure 1 achieves a high storage ratio, minimizing its volume when folded for easy carrying and storage. When unfolded, the geometric characteristics of Miura Origami ensure that the protective structure 1 can quickly unfold to a predetermined shape along a predetermined path, further improving response speed. Miura Origami's design not only improves the storage efficiency of the protective structure 1 but also enhances its stability during unfolding, preventing a decrease in protective effectiveness due to deviations in the unfolding path.

[0032] In practical applications, the protective device remains in standby mode while the user is wearing it for combat missions. When a drone, a grenade, or hand grenade fragments appear at close range, the user simply presses the unlock button 3 with their thumb to activate the gas generator 4; the entire deployment process is completed within seconds. The deployed protective structure 1 quickly covers the user's critical areas, providing immediate protection. Simultaneously, the user can continue performing other tasks without additional operation or adjustment of the protective device's position. The lightweight design and efficient deployment mechanism of the protective structure 1 significantly enhance the user's mobility and operational flexibility, giving it greater survivability in complex battlefield environments.

[0033] The present invention further proposes that, at the critical joints of each folding unit, i.e. the folds most prone to leakage, hollow, highly elastic rubber sealing tubes are pre-embedded along the folds in the protective structure 1. The sealing tubes are connected to the main air chamber of the gas generator 4 through micro ventilation channels, ensuring that when the gas generator 4 is started and inflates the main air chamber, high-pressure gas can simultaneously rush in and fill the sealing tubes. When the protective structure 1 is in the folded state, the sealing tubes are flattened. During the inflation process, the internal air pressure of the sealing tubes rises rapidly, causing radial expansion, thereby actively pressing and sealing the fold gaps from the inside, forming a dynamic adaptive sealing structure.

[0034] This application also provides an alternative sealing solution, in which the main air chamber of the gas generator 4 is itself an integral air capsule, encapsulated inside the protective structure 1; when inflated, the air pressure inside the air capsule rises rapidly and expands, causing the protective structure 1 to unfold, eliminating the need for an additional sealing structure and saving the need for a separate hollow high-elasticity rubber sealing tube.

[0035] In summary, this invention successfully achieves the goals of lightweight design, rapid response, and comprehensive protection through optimized structural design and material selection. The folding and unfolding process of the protective structure 1 is driven by the gas generator 4, and the Miura origami technique ensures a precise and stable unfolding path. The use of aramid fiber-reinforced flexible resin composite material or PE board as the main material not only reduces the weight of the device but also provides excellent protective performance. The nitrogen gas released by the gas generator 4 serves as the unfolding power source, combining safety and economy. The above technical solution has demonstrated excellent performance in practical applications, significantly improving the survivability of protected objects in modern battlefield environments.

[0036] It should be noted that the specific thickness values ​​and fiber-reinforced flexible matrix composite materials specified in the implementation examples within the technical solution framework of this invention patent are essentially intended to present the actual implementation path of the patented technology in a more intuitive and concrete way, demonstrating the feasibility and effectiveness of the technical solution with operable examples, and are by no means intended to limit the boundaries of patent protection. From the perspective of size dimensions (such as side length, diameter, and thickness), whether the specifications are larger or smaller than those in the examples, as long as they fit the overall design logic of the patented technology and meet the pre-set functional requirements of the technical solution, they fall within the scope of protection of this patent. Regarding the selection of fiber-reinforced flexible matrix composite materials, the materials used in the examples are merely exemplary solutions and not the only options. Other similar materials with fiber-reinforced structural characteristics, capable of achieving flexible matrix functions, and compatible with the core technical solution of the patent, even if not listed one by one in the implementation examples, are also included in the scope of protection of this patent, thereby ensuring the comprehensiveness of patent protection and avoiding damage to the inventor's rights due to the limitations of specific embodiments.

Claims

1. A flexible, rapidly inflatable, and foldable portable explosion protection device, characterized in that, include: The protective structure (1), wristband (2), unlock button (3) and gas generator (4) are divided into a folded state and an unfolded state. The gas generator (4) is built into the protective structure (1) in the folded state and is used to drive the protective structure (1) to quickly unfold from the folded state to the unfolded state. The unlock button (3) is fixed on the wristband (2) and the wristband (2) is close to the forearm of the protected object.

2. The flexible, rapidly inflatable, and foldable portable explosion protection device according to claim 1, characterized in that, The protective structure (1) is rectangular or cylindrical in the folded state.

3. The flexible, rapidly inflatable, portable explosion protection device according to claim 1, characterized in that, The protective structure (1) is rectangular or cylindrical in its unfolded state.

4. A flexible, rapidly inflatable, portable explosion protection device according to claim 1, characterized in that, The gas generator (4) contains a material that can decompose to generate gas. The material can be rapidly decomposed to generate high-pressure gas after the unlock button (3) is pressed.

5. A flexible, rapidly inflatable, portable explosion protection device according to claim 1, characterized in that, The protective structure (1) is made of fiber-reinforced flexible resin composite material.

6. A flexible, rapidly inflatable, portable explosion protection device according to any one of claims 1-5, characterized in that, The protective structure (1) is provided with a limit cable (7) inside, which is used to limit the shape of the protective structure in the unfolded state.

7. A flexible, rapidly inflatable, and foldable portable explosion protection device according to claim 1, characterized in that, The protective structure (1) in the folded state is reconnected and folded by cutting the composite material plate using the Miura origami structure. The creases are defined by the unit cell array, and the geometric parameters of the Miura origami structure satisfy the following relationship: in, , , , The angle between adjacent creases in a single cell. , , , This represents the length of the crease in a single cell.

8. A flexible, rapidly inflatable, and foldable portable explosion protection device according to claim 7, characterized in that, By adjusting the parameters It is possible to obtain single-cell Miura origami structures with different storage ratios, parameters The range of values ​​is: 80° < <90°.

9. A flexible, rapidly inflatable, portable explosion protection device according to claim 7 or 8, characterized in that, The protective structure (1) has hollow, highly elastic rubber sealing tubes embedded at the key joint positions of each folding unit, distributed along the fold lines. The sealing tube is connected to the main air chamber of the gas generator (4) through a micro ventilation channel, ensuring that when the gas generator is started and fills the main air chamber, the high-pressure gas can flow in and fill the sealing tube synchronously. When the protective structure (1) is in a folded state, the sealing tube is flattened; during the inflation process, the internal air pressure of the sealing tube rises rapidly, causing it to expand radially and actively press and seal the fold gap from the inside.

10. The flexible, rapidly inflatable, and expandable portable explosion protection device according to claim 7 or 8, characterized in that, The main air chamber of the gas generator (4) is itself an integral air capsule, which is encapsulated inside the protective structure (1); when inflated, the air capsule expands directly.

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