PBO fiber helmet

Abstract

The utility model discloses a PBO fiber helmet which comprises a protective shell and a buffer layer, and the protective shell is made of PBO fiber materials, adopts a specific weaving structure, is subjected to thermosetting forming after being soaked in epoxy resin, and has high strength and impact resistance. The buffer layer is arranged on the inner side of the protective shell, is made of a high-density EPS foaming material and can effectively disperse and absorb impact energy, so that the head of a wearer is protected. In addition, a ceramic anti-impact layer can be additionally arranged on the outer side of the protective shell, so that the penetration resistance is further enhanced. And the comfortable liner is arranged on the inner side of the buffer layer and is made of a memory foam material, so that the wearing comfort is improved. Through reasonable material selection and structure optimization, the helmet has excellent protection performance and light wearing experience.

Description

Technical Field

[0001] The utility model belongs to the technical field of helmets and discloses a PBO fiber helmet. Background Art

[0002] In recent years, with the advancement of urbanization and the promotion of green travel concepts, cycling has become an increasingly popular choice. Cycling is not only an environmentally friendly means of transportation but also an important form of fitness. However, due to complex road conditions and frequent traffic accidents, cyclists face significant risks, especially to their head. To reduce the risk of head injuries during cycling, wearing a bicycle helmet with good protection has become a key measure to ensure cyclists' safety.

[0003] Bicycle helmet design primarily focuses on mitigating impact and preventing penetration, aiming to mitigate head impacts from falls, collisions, and other accidents. Currently available bicycle helmets typically utilize a dual-layer structure consisting of an outer shell and a cushioning layer. The outer shell primarily provides impact resistance and penetration protection, while the cushioning layer absorbs and disperses impact energy, mitigating the impact on the wearer's head. The outer shell is typically made of plastic or fiberglass composites. While these materials offer a certain degree of strength, they are prone to cracking or shattering in the event of a high-intensity impact, compromising the helmet's protective effectiveness.

[0004] Furthermore, with advancements in materials science and structural design, the demand for lightweight bicycle helmets is increasing. Lighter helmets can reduce the wearer's burden and improve riding comfort and flexibility. However, existing lightweight helmet materials have shortcomings in ensuring protective performance, particularly in terms of impact and penetration resistance, making it difficult to simultaneously meet the requirements of high strength and low weight. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a PBO fiber helmet.

[0006] The technical solutions provided by this utility model are as follows:

[0007] A PBO fiber helmet comprising a protective shell and a buffer layer;

[0008] The protective shell is made of PBO fiber material with a woven structure and is thermoset after being impregnated with epoxy resin;

[0009] The buffer layer is arranged inside the outer protective shell to disperse and absorb impact energy.

[0010] In some embodiments, an impact-resistant layer is provided on the outside of the protective shell, and the impact-resistant layer is made of carbon fiber material.

[0011] In some embodiments, the cushioning layer is made of high-density EPS foam material.

[0012] In some embodiments, a comfort pad is provided on the inner side of the buffer layer, and the comfort pad is made of memory foam material.

[0013] In some embodiments, the protective shell adopts a PBO fiber weaving structure with an angle of 0°, 45°, 90°, or a combination thereof.

[0014] In some embodiments, the protective shell includes a multi-layer PBO fiber woven structure, and each layer of the PBO fiber has a different weaving angle.

[0015] In some embodiments, the helmet surface has ventilation holes and guide groove structures.

[0016] In summary, the beneficial effects of the present invention are as follows:

[0017] By utilizing PBO fiber as the protective shell material, combined with a rational weaving design and a multi-layered construction, this helmet achieves both weight reduction and adequate impact resistance. Furthermore, the PBO fiber used as the protective shell material exhibits excellent shear resistance. The combination of the PBO fiber shell material and the high-density EPS cushioning layer ensures excellent penetration resistance and energy absorption in high-speed impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the helmet;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the helmet;

[0020] Figure 3 A schematic diagram of the helmet material hierarchy.

[0021] The reference numerals are as follows:

[0022] 1. Protective shell; 2. Buffer layer; 3. Impact-resistant layer; 4. Ventilation holes; 5. Guide groove. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0024] like Figure 1-3 As shown, the present application provides a PBO fiber helmet, comprising a protective shell 1 and a buffer layer 2.

[0025] The protective shell 1 is primarily made of PBO fiber. PBO fiber has extremely high tensile strength and modulus, and remains stable at high temperatures. Its low density and light weight make it ideal for lightweight protective equipment such as helmets. To enhance the structural strength of the PBO fiber, the protective shell 1 utilizes a woven structure.

[0026] The protective shell 1 is woven from PBO fibers at specific braiding angles of 0°, 45°, 90°, and combinations thereof. PBO fibers woven at different angles disperse impact forces during an impact, reducing concentrated pressure on the fibers in a specific direction, thereby effectively improving the helmet's impact resistance and penetration resistance.

[0027] In particular, in a multi-layer structure, the protective shell 1 comprises multiple layers of PBO fiber braided structures, each layer having a different braiding angle. Each braided layer has a unique dispersion and energy absorption effect in the direction of force. Therefore, by stacking multiple braided layers, the overall protective performance of the helmet can be greatly improved.

[0028] The PBO fiber braided structure of the protective shell 1 is impregnated with epoxy resin and then integrally formed using a thermosetting process. The epoxy resin not only enhances the toughness of the PBO fibers but also forms a strong bond with them at high temperatures, thereby enhancing the structural integrity and making the protective shell 1 more durable.

[0029] To further enhance the helmet's impact resistance, an impact-resistant layer 3 can be installed on the outside of the protective shell 1. This layer is made of carbon fiber material and can effectively block high-energy impacts. Carbon fiber material has high hardness and can break when impacted, thereby dissipating the impact force and further improving the helmet's protective capabilities. The thickness of the impact-resistant layer 3 is designed based on the helmet's usage environment and requirements, and is generally between 1 and 2 mm.

[0030] The cushioning layer 2 is a crucial component of the helmet's interior. Its primary function is to disperse and absorb impact energy, protecting the wearer's head from severe impact. Made from high-density EPS (Expanded Polystyrene) foam, it offers excellent energy absorption. High-density EPS (Expanded Polystyrene) foam is a commonly used energy-absorbing material. EPS foam boasts lightweight, excellent energy absorption, and superior impact resistance, making it ideal for rapidly dissipating energy during impact, reducing the transmission of shock within the helmet.

[0031] The cushioning layer 2 is molded to conform to the internal contours of the protective shell 1, achieving a snug fit. This prevents slippage during use and ensures the overall stability and energy absorption performance of the helmet. It should be noted that the various layers of the helmet can be connected by gluing or mechanical interlocking.

[0032] In order to improve wearing comfort, a layer of comfort padding is provided on the inner side of the buffer layer 2. The comfort padding is made of memory foam material, which can gradually conform to the shape of the head when worn, thereby dispersing pressure and reducing the wearer's sense of oppression.

[0033] Memory foam is a high-rebound material with excellent slow rebound and shape memory properties. When compressed, it can gradually conform to the wearer's head contours, reducing localized pressure concentration. At the same time, it has good breathability, avoiding discomfort caused by long-term wear.

[0034] The thickness of the comfort pad is generally 5-10 mm to ensure fit and breathability. In addition, the outer layer of the comfort pad can be wrapped with skin-friendly fabric material to improve the wearing comfort experience and prevent skin allergies and friction damage.

[0035] To further enhance the wearing comfort of the helmet, ventilation holes 4 can be designed on the helmet shell to optimize air circulation and reduce the feeling of stuffiness. The design of the ventilation holes 4 should try to avoid damaging the overall strength of the helmet. Air circulation can be achieved by opening ventilation channels on the cushioning layer 2 and the comfort liner.

[0036] It should be noted that any implementations not shown or described in the drawings or the main text of the specification are known to those skilled in the art and are not described in detail. In addition, the above definitions of the various elements and methods are not limited to the various specific structures, shapes, or methods mentioned in the embodiments.

[0037] It should also be noted that while examples of parameters including specific values ​​may be provided herein, these parameters do not need to be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error tolerances or design constraints. Directional terms mentioned in the embodiments, such as "upper," "lower," "front," "back," "left," "right," "inner," and "outer," are merely references to the directions in the accompanying drawings and are not intended to limit the scope of protection of this application.

[0038] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A PBO fiber helmet, characterized in that: It comprises a protective shell (1) and a buffer layer (2); The protective shell (1) is made of PBO fiber material, adopts a woven structure, and is thermoset after being impregnated with epoxy resin; A buffer layer (2) is arranged inside the protective shell (1) and is used to disperse and absorb impact energy.

2. The PBO fiber helmet according to claim 1, characterized in that: An impact-resistant layer (3) is provided on the outside of the protective shell (1), and the impact-resistant layer (3) is made of carbon fiber material.

3. The PBO fiber helmet according to claim 1, characterized in that: The buffer layer (2) is made of high-density EPS foam material.

4. The PBO fiber helmet according to claim 1, characterized in that: A comfortable pad is provided on the inner side of the buffer layer (2), and the comfortable pad is made of memory foam material.

5. The PBO fiber helmet according to claim 1, characterized in that: The protective shell (1) adopts a PBO fiber braiding structure with an angle of 0°, 45°, 90°, or a combination thereof.

6. The PBO fiber helmet according to claim 5, characterized in that: The protective shell (1) comprises a multi-layer PBO fiber braided structure, and each layer of PBO fibers has a different braiding angle.

7. The PBO fiber helmet according to claim 1, characterized in that: The surface of the helmet is provided with ventilation holes (4) and guide grooves (5) structures.

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