Light high-strength helmet

Abstract

The utility model discloses a light high-strength helmet. The helmet comprises a first PC material layer, a PC foaming layer and a second PC material layer which are sequentially arranged, the density of the PC foaming layer is smaller than that of the first PC material layer and that of the second PC material layer, and the PC foaming layer is arranged between the first PC material layer and the second PC material layer and used for providing buffering and elastic effects; according to the light high-strength helmet, the three-layer structural design is adopted, the buffering and elastic effects are achieved, impact force can be effectively absorbed, and the safety of the head of a wearer is protected; and the PC foaming layer has excellent rebound resilience and does not generate permanent deformation, so that the protection performance of the helmet is durable and stable. Meanwhile, the density of the PC foaming layer is smaller than that of the first PC material layer and the second PC material layer, so that the overall weight of the helmet can be effectively reduced, the burden of a wearer is relieved, and the wearing comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of helmet manufacturing, in particular to a lightweight and high-strength helmet. Background Art

[0002] Helmets are a common form of personal protective equipment, widely used on motorcycles, bicycles, construction sites, and industrial production to protect the wearer's head. Traditional helmets often feature a single-layer design, typically molded from high-strength materials such as ABS and PC. While these helmets offer high strength and hardness, effectively resisting external impacts, their lack of cushioning and elasticity can easily transfer impact forces directly to the wearer's head during an impact, causing secondary damage.

[0003] To address these issues, some improved helmets have adopted a double-layer design, adding an EPS foam layer inside the helmet to provide cushioning and energy absorption. However, EPS foam has poor resilience and can permanently deform after repeated impacts, significantly reducing the helmet's protective performance. Furthermore, the connection strength between the EPS foam and the helmet shell is weak, making it prone to delamination and detachment during impact, reducing the helmet's structural stability and service life. Utility Model Content

[0004] The purpose of the present invention is to provide a lightweight and high-strength helmet to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lightweight, high-strength helmet, comprising a first PC material layer, a PC foam layer, and a second PC material layer arranged in sequence; the density of the PC foam layer is less than that of the first PC material layer and the second PC material layer, the PC foam layer is arranged between the first PC material layer and the second PC material layer, and is used to provide cushioning and elasticity.

[0006] As a preferred technical solution of the present invention, a first connecting structure is provided on the contact surface between the first PC material layer and the PC foam layer, and a second connecting structure is provided on the contact surface of the PC foam layer, and the first connecting structure is in close contact with the second connecting structure.

[0007] As a preferred technical solution of the present invention, the first connecting structure is a groove provided on the first PC material layer and the second PC material layer, and the second connecting structure is a protrusion provided on the PC foam layer. The depth of the groove is 0.5-5 mm.

[0008] As a preferred technical solution of the present invention, the first connecting structure is a protrusion provided on the first PC material layer and the second PC material layer, and the second connecting structure is a groove provided on the PC foam layer. The height of the protrusion is 0.5-5 mm.

[0009] As a preferred technical solution of the present invention, the first connecting structure and the second connecting structure extend in the longitudinal direction or the transverse direction of the helmet to form a continuous or discontinuous strip structure.

[0010] As a preferred technical solution of the present invention, the thickness of the first PC material layer and the second PC material layer is 1-5 mm, and the thickness of the PC foam layer is 5-20 mm.

[0011] As a preferred technical solution of the present invention, the density of the PC foam layer is 0.05-0.5g / cm 3 .

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the lightweight and high-strength helmet of the present invention has the following beneficial effects:

[0013] 1) This lightweight, high-strength helmet features a three-layer structure, including a first PC material layer, a PC foam layer, and a second PC material layer. The PC foam layer, placed between the first and second PC layers, not only provides cushioning and elasticity, effectively absorbing impact and protecting the wearer's head, but also exhibits excellent resilience and prevents permanent deformation, ensuring the helmet's long-lasting and stable protective performance. Furthermore, because the PC foam layer has a lower density than the first and second PC layers, it effectively reduces the overall weight of the helmet, alleviating the wearer's burden and improving wearing comfort.

[0014] 2) This lightweight, high-strength helmet has a first connecting structure on the contact surface between the first PC material layer and the PC foam layer, and a second connecting structure on the contact surface between the second PC material layer and the PC foam layer. The first and second connecting structures are grooves or protrusions, which can enhance the connection strength between the two adjacent layers, avoid delamination and shedding, and improve the structural stability and service life of the helmet. The first and second PC material layers have high strength and hardness, which can further improve the impact resistance and wear resistance of the helmet and extend the service life of the helmet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the helmet structure of the present utility model;

[0016] Figure 2 This is one of the schematic diagrams of the helmet structure of the present utility model;

[0017] Figure 3 This is a schematic diagram of the material layer structure of the present utility model;

[0018] Figure 4 This is one of the schematic diagrams of the material layer structure of the present utility model;

[0019] Figure 5 This is a schematic diagram of the first connection structure of the present utility model;

[0020] Figure 6 This is one of the schematic diagrams of the first connection structure of the present utility model;

[0021] Figure 7 This is the second schematic diagram of the first connection structure of the present utility model.

[0022] In the figure: 1. First PC material layer; 2. PC foam layer; 3. Second PC material layer; 4. First connection structure; 5. Second connection structure. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-7 The utility model provides a lightweight and high-strength helmet, which includes a first PC material layer 1, a PC foam layer 2, and a second PC material layer 3 arranged in sequence; the density of the PC foam layer 2 is lower than the density of the first PC material layer 1 and the second PC material layer 3, and the PC foam layer 2 is arranged between the first PC material layer 1 and the second PC material layer 3, and is used to provide cushioning and elasticity.

[0025] Specifically, the lightweight, high-strength helmet adopts a three-layer structural design. The first PC material layer 1 and the second PC material layer 3 have high strength and hardness, can resist external impact force, and protect the wearer's head safety. The PC foam layer 2 is placed between the first PC material layer 1 and the second PC material layer 3, has good cushioning and elastic properties, can absorb and disperse impact force, and reduce damage to the wearer's head. At the same time, since the density of the PC foam layer 2 is lower than that of the first PC material layer 1 and the second PC material layer 3, the overall weight of the helmet can be effectively reduced, and wearing comfort can be improved.

[0026] In this embodiment, a first connection structure 4 is provided on the contact surface between the first PC material layer 1 and the PC foam layer 2 , and a second connection structure 5 is provided on the contact surface between the PC foam layer 2 . The first connection structure 4 and the second connection structure 5 are in close contact.

[0027] Specifically, a first connection structure 4 and a second connection structure 5 are provided on the contact surface between the first PC material layer 1 and the PC foam layer 2, and a first connection structure 4 and a second connection structure 5 are also provided on the contact surface between the second PC material layer 3 and the PC foam layer 2. The first connection structure 4 and the second connection structure 5 are groove or protrusion structures. When the helmet is impacted, the groove or protrusion structure can increase the contact area between the two adjacent layers and improve the connection strength. At the same time, it can play a role of biting and locking, preventing the PC foam layer 2 and the first PC material layer 1 and the second PC material layer 3 from relative sliding or separation, thereby improving the structural stability and overall protective performance of the helmet.

[0028] like Figure 3 As shown, in this embodiment: the first connecting structure 4 is a groove provided on the first PC material layer 1 and the second PC material layer 3, the second connecting structure 5 is a protrusion provided on the PC foam layer 2, and the depth of the groove is 0.5-5 mm.

[0029] Specifically, the groove structure increases the contact area between the first and second PC material layers 1, 3, and the PC foam layer 2, improving the connection strength. Furthermore, when the helmet is impacted, the PC foam layer 2 can partially embed within the groove, resulting in greater deformation, thereby absorbing more impact energy and improving the helmet's cushioning performance. Furthermore, the appropriate groove depth ensures connection strength while preventing excessive groove depth from reducing the strength of the first and second PC material layers 1, 3.

[0030] like Figure 4 As shown, in this embodiment: the first connecting structure 4 is a protrusion provided on the first PC material layer 1 and the second PC material layer 3, and the second connecting structure 5 is a groove provided on the PC foam layer 2, and the height of the protrusion is 0.5-5 mm.

[0031] Specifically, the provided protrusion structure can cooperate with the groove structure to simultaneously increase the contact area between the first PC material layer 1 and the second PC material layer 3 and the PC foam layer 2, thereby improving the connection strength. When the helmet is hit, the protrusion can be embedded in the PC foam layer 2, resulting in a larger deformation, thereby absorbing more impact energy and improving the cushioning performance of the helmet. In addition, the appropriate protrusion height can ensure the connection strength while avoiding the protrusion being too high, which will cause the thickness of the PC foam layer 2 to be uneven and affect the overall performance of the helmet.

[0032] In this embodiment, the first connecting structure 4 and the second connecting structure 5 extend in the longitudinal direction or the transverse direction of the helmet to form a continuous or discontinuous strip structure.

[0033] Specifically, the strip structure arrangement of the first connecting structure 4 and the second connecting structure 5 can further increase the contact area between the first PC material layer 1 and the second PC material layer 3 and the PC foam layer 2, thereby improving the connection strength. In addition, the strip structure can reinforce the PC foam layer 2, thereby improving the compressive strength and impact resistance. The continuous strip structure can achieve more uniform mechanical properties, while the discontinuous strip structure can reduce the overall weight of the helmet while ensuring the mechanical properties.

[0034] See also Figure 5-7 , wherein the protrusions and grooves can be Figure 2-3 The zigzag shape depicted may also be a circle, a square or a polyhedron, without specific limitation.

[0035] In this embodiment, the thickness of the first PC material layer 1 and the second PC material layer 3 is 1-5 mm, and the thickness of the PC foam layer 2 is 5-20 mm.

[0036] Specifically, the appropriate thickness of the first PC material layer 1 and the second PC material layer 3 can ensure the strength and hardness of the helmet, improve the impact resistance and wear resistance, while the appropriate thickness of the PC foam layer 2 can ensure good cushioning and elastic properties, while avoiding excessive thickness resulting in an increase in the weight of the helmet and affecting wearing comfort.

[0037] In this embodiment, the density of the PC foam layer 2 is 0.05-0.5 g / cm 3 .

[0038] Specifically, a suitable density of the PC foam layer 2 can ensure good cushioning and elastic properties, while reducing the overall weight of the helmet and improving wearing comfort. It can avoid the situation where the strength and resilience of the PC foam layer 2 decrease due to a too low density of the helmet, thereby affecting the protective performance of the helmet, and it can also avoid the situation where the weight of the helmet increases due to a too high density, thereby affecting wearing comfort.

[0039] In order to further increase the comfort of the helmet, a sponge lining is provided on the inner pad of the helmet. The sponge lining can further increase the cushioning performance of the helmet, and can also be disassembled and cleaned during daily use.

[0040] Among them, the first PC material layer 1, the PC foam layer 2 and the second PC material layer 3 are bonded together through a bonding process, and the bonding strength is not less than 1.0 MPa. The high-strength bonding of the first PC material layer 1, the PC foam layer 2 and the second PC material layer 3 can ensure the stability and integrity of the three-layer structure, avoiding delamination or falling off during use. At the same time, good bonding strength can ensure that impact force can be effectively transmitted and dispersed between the three-layer structure, thereby improving the protective performance of the helmet.

[0041] When processing this lightweight and high-strength helmet, a first PC material layer 1, a second PC material layer 3, and a PC foam layer 2 are first prepared separately by combining injection molding and foam molding, and a first connecting structure 4 and a second connecting structure 5 are formed on the inner surfaces of the first PC material layer 1 and the second PC material layer 3. Then, the three layers are bonded together by a bonding process, so that the PC foam layer 2 and the first connecting structure 4 and the second connecting structure 5 are interlocked with each other to form a helmet blank. Finally, the helmet blank is subjected to post-processing such as grinding, polishing, and painting to obtain the final product. This lightweight and high-strength helmet has a simple processing technology, can be mass-produced, has high production efficiency, and is low in cost, and can effectively ensure the market competitiveness of this helmet.

[0042] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight and high-strength helmet, characterized in that: The helmet comprises a first PC material layer (1), a PC foam layer (2) and a second PC material layer (3) which are arranged in sequence; the density of the PC foam layer (2) is lower than the density of the first PC material layer (1) and the second PC material layer (3); the PC foam layer (2) is arranged between the first PC material layer (1) and the second PC material layer (3) and is used to provide cushioning and elasticity.

2. The lightweight and high-strength helmet according to claim 1, characterized in that: A first connection structure (4) is provided on the contact surface between the first PC material layer (1) and the PC foam layer (2), and a second connection structure (5) is provided on the contact surface between the PC foam layer (2), and the first connection structure (4) and the second connection structure (5) are in close contact.

3. A lightweight and high-strength helmet according to claim 2, characterized in that: The first connecting structure (4) is a groove provided on the first PC material layer (1) and the second PC material layer (3), and the second connecting structure (5) is a protrusion provided on the PC foam layer (2). The depth of the groove is 0.5-5 mm.

4. A lightweight and high-strength helmet according to claim 2, characterized in that: The first connecting structure (4) is a protrusion provided on the first PC material layer (1) and the second PC material layer (3), and the second connecting structure (5) is a groove provided on the PC foam layer (2). The height of the protrusion is 0.5-5 mm.

5. A lightweight and high-strength helmet according to claim 2, characterized in that: The first connecting structure (4) and the second connecting structure (5) extend in the longitudinal direction or transverse direction of the helmet to form a continuous or discontinuous strip structure.

6. A lightweight and high-strength helmet according to claim 1, characterized in that: The thickness of the first PC material layer (1) and the second PC material layer (3) is 1-5 mm, and the thickness of the PC foam layer (2) is 5-20 mm.

7. A lightweight and high-strength helmet according to claim 1, characterized in that: The density of the PC foam layer (2) is 0.05-0.5 g / cm 3 .

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