Light anti-impact helmet

Abstract

The invention discloses a light anti-impact helmet which comprises a helmet shell, a net-shaped structure layer and a foam material layer are arranged on the inner side of the helmet shell, and the net-shaped structure layer and the inner side wall of the helmet shell are arranged at intervals to form a filling interval; and the foam material layer is coated on the net-shaped structure layer, and is filled in the filling intervals and the meshes of the net-shaped structure layer. According to the light anti-impact helmet, the net-shaped structure layer can be wrapped by the foam material layer on the inner side of the helmet shell, so that the net-shaped structure layer and the instant noodle material layer are integrated, and the strength and the anti-impact performance are improved.

Description

Technical Field

[0001] The invention relates to the technical field of helmets, in particular to a lightweight impact-resistant helmet. Background Art

[0002] In the currently available lightweight helmets, the helmet shell is generally formed by a PVC vacuum forming process, and a foam cushioning inner layer is foamed inside the shell. The helmet formed in this way is lighter in weight, and the foam cushioning inner layer inside the helmet can provide cushioning protection for the head after the helmet is worn on the head.

[0003] However, if only the foam cushioning inner layer is located inside the helmet, it is easy to pierce the helmet surface layer and the foam cushioning inner layer when the helmet is subjected to an impact test, and the helmet cannot pass the impact test. In order to pass the impact test, some helmets are provided with a mesh structure layer on the inside of the helmet, and then a foam cushioning inner layer is provided inside the mesh structure layer. However, in this way, the mesh material layer and the foam cushioning inner layer are provided separately, and it is easy for the mesh material layer to fall off after use. Summary of the invention

[0004] In order to overcome at least one of the defects described in the above-mentioned prior art, the present invention provides a lightweight impact-resistant helmet, which can cover the mesh structure layer with a foam material layer on the inner side of the helmet shell, so that the mesh structure layer and the foam material layer are integrated to improve the strength and impact resistance.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A lightweight impact-resistant helmet comprises a helmet shell, wherein a mesh structure layer and a foam material layer are arranged on the inner side of the helmet shell, wherein the mesh structure layer is spaced apart from the inner side wall of the helmet shell to form a filling space; the foam material layer is coated on the mesh structure layer and filled in the filling space and the mesh holes of the mesh structure layer.

[0007] Furthermore, the foam material layer is used to be formed on the inner side of the helmet shell by a foaming process after the mesh structure layer is installed on the helmet shell, and is filled into the filling gap to cover the mesh structure layer.

[0008] Furthermore, the helmet shell is formed by PVC material using a vacuum forming process.

[0009] Furthermore, the thickness of the helmet shell is 0.5-3 mm.

[0010] Furthermore, the mesh structure layer is a honeycomb mesh; the mesh holes of the mesh structure layer have a plurality of hole walls, the plurality of hole walls are connected at an angle and are arranged to form the mesh holes; the hole walls of two adjacent mesh holes are connected by ribs.

[0011] Furthermore, the mesh structure layer is made of nylon.

[0012] Furthermore, the thickness of the mesh structure layer is 2-3.5 mm; the aperture of the mesh of the mesh structure layer is 6-12 mm.

[0013] Furthermore, the thickness of the foam material layer is 15-35 mm.

[0014] Furthermore, the thickness of the filling interval is 8-10 mm.

[0015] Furthermore, gripping columns are protrudingly provided on both sides of the periphery of the mesh structure; and filling holes are provided in the gripping columns.

[0016] Furthermore, the helmet shell, the mesh structure layer and the foam material layer are all provided with corresponding through ventilation openings.

[0017] In summary, the present invention has the following technical effects:

[0018] In the present application, the grid structure on the inner side of the helmet shell can withstand certain tension and pressure, and has good integrity and stability. During the force-bearing process, the grid structure can disperse the force to various parts through its internal connection points, thereby improving the overall load-bearing capacity. When the foam material is subjected to external force, it can undergo certain deformation to absorb and disperse energy, thereby protecting the internal structure from damage. In the present application, the grid structure and the foam material layer are mutually embedded. When the helmet is subjected to force impact, it first passes through the foam material layer in the filling interval. At this time, the foam material layer will first deform to absorb and disperse the impact of the force. At the same time, the foam material layer is embedded with a mesh structure layer. The mesh structure layer can form multiple connection points in the foam material layer. The multiple connection points can be dispersed in the foam layer to bear the impact force of the foam layer, thereby reducing the impact at a single point position and improving the overall impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the helmet of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the helmet of the present invention from another viewing angle;

[0021] Figure 3 It is a schematic diagram of the structure of the mesh structure layer and the foam material layer of the present invention;

[0022] Figure 4 The schematic diagram of the structure of the mesh structure layer of the present invention is

[0023] Figure 5 It is a schematic diagram of the test structure of the present invention.

[0024] The meanings of the reference numerals are as follows: 10, helmet shell; 11, ventilation port; 20, foam material layer; 30, mesh structure layer; 31, mesh; 32, gripping column. DETAILED DESCRIPTION

[0025] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] See also Figure 1-Figure 4 The present invention discloses a lightweight impact-resistant helmet, including a helmet shell 10, a mesh structure layer 30 and a foam material layer 20 are provided on the inner side of the helmet shell 10, and the mesh structure layer 30 is spaced apart from the inner side wall of the helmet shell 10, so that after the mesh structure layer 30 is assembled to the helmet shell 10, it can fill the gap with the inner side of the helmet shell 10, and the foam material layer 20 is coated on the mesh structure layer 30 and filled in the filling gap and the mesh holes 31 of the mesh structure layer 30.

[0029] On the basis of the above structure, when the lightweight impact-resistant helmet of the present invention is used, the helmet is worn on the head, and the foam material layer 20 on the inner side of the helmet shell 10 can provide buffering protection for the human head. In the present application, a mesh structure layer 30 is arranged inside the foam material layer 20, and the foam material layer 20 is partially filled into the mesh 31 of the mesh structure layer 30, and the part of the foam material layer 20 that passes through the mesh 31 is filled into the filling interval between the mesh structure layer 30 and the helmet shell 10, that is, there are foam material layers 20 above and below the mesh structure layer 30, and the foam structure layer is also filled in the mesh 31 of the mesh structure layer 30, that is, the mesh structure layer 30 is arranged in the foam material layer 20 in the form of an insert.

[0030] Specifically, the grid structure can withstand certain tension and pressure, and has good integrity and stability. During the force-bearing process, the grid structure can disperse the force to each part through its internal connection points, thereby improving the overall bearing capacity. When the foam material is subjected to external force, it can undergo certain deformation to absorb and disperse energy, thereby protecting the internal structure from damage. In the present application, the grid structure and the foam material layer 20 are mutually embedded. When the helmet is subjected to force impact, it first passes through the foam material layer 20 in the filling interval. At this time, the foam material layer 20 will first deform to absorb and disperse the impact of the force. At the same time, the foam material layer 20 is embedded with a mesh structure layer 30. The mesh structure layer 30 can form multiple connection points in the foam material layer 20. The multiple connection points can be dispersed in the foam layer to bear the impact force of the foam layer, thereby reducing the impact of a single point position and improving the overall impact resistance.

[0031] In addition, since the mesh holes 31 of the mesh structure are filled with foam material and the foam material layer 20 is fused with ribs of the mesh structure, the foam material layer 20 can be grasped and connected together, thereby improving the overall strength of the inner layer of the helmet, thereby improving the overall strength of the helmet.

[0032] It should also be emphasized that before the helmet products leave the factory, the helmet structure will be tested for impact resistance. The test method can be found in "GB+811-2022":

[0033] Since the steel cone structure is dropped during the test to test the puncture resistance of the helmet, and in the present application, since the mesh structure layer 30 is embedded in the foam material layer 20, the bottom end of the steel cone can also be blocked by the mesh 31 of the mesh structure layer 30 during the test. When the thickness of the foam material layer 20 is not enough, the puncture resistance of the steel cone can be blocked, thereby improving the puncture resistance. The helmet structure can also pass the puncture resistance test of the helmet when the foam material layer 20 is thin. At the same time, due to the mutual embedding of the mesh structure layer 30 and the foam material layer 20, its anti-buffering performance and strength can be effectively improved.

[0034] Therefore, when the foam material layer 20 and the helmet shell 10 are both relatively thin, the helmet structure can pass the puncture resistance test, and the anti-buffering performance and strength can be effectively improved, so the overall weight of the helmet can be reduced.

[0035] Of course, the foam material layer 20 can be made of foam plastics such as EPS, EPP, etc. in the prior art.

[0036] Furthermore, in the present embodiment, the foam material layer 20 is formed on the inner side of the helmet by foaming. Thus, during production, the mesh structure layer 30 can be installed on the helmet shell 10 first, and then the foam material layer 20 can be formed on the inner side of the helmet shell 10 by a foaming process. During the foaming process, the foam can be filled to the filling gap to cover the mesh structure layer 30. In this way, a helmet inner layer structure in which the mesh structure layer 30 and the foam material layer 20 are interlocked with each other can be formed. Moreover, the foam can be formed by foaming, and the foamed foam can fill each position of the mesh structure, so that the mesh structure is filled more fully, and the structure is more stable after the two are interlocked.

[0037] Furthermore, the helmet shell 10 is formed by PVC material by the blister process, and the thickness of the helmet shell 10 is 0.5-3mm. The thickness of the helmet shell made in this way is relatively thin. The helmet shell 10 formed by the blister process can thin the PVC material and only needs to form an outer shell structure, thereby reducing the overall weight.

[0038] Of course, since the PVC material is brittle and thin as a whole, and therefore lacks strength, the helmet shell formed by PVC material vacuum forming is combined with the inner layer structure formed by the mesh structure layer 30 and the foam material layer 20 in this application, which has the characteristics of light weight, anti-buffering performance and high strength.

[0039] Furthermore, the mesh structure layer 30 in this embodiment is a honeycomb mesh, that is, the mesh holes 31 of the mesh structure layer 30 are honeycomb holes. Specifically, the mesh holes 31 of the mesh structure layer 30 have multiple hole walls, and the multiple hole walls are connected at an angle and surrounded to form the above-mentioned mesh holes 31; the hole walls of two adjacent mesh holes 31 are connected by ribs.

[0040] Based on this structure, due to the uniform distribution of the grid, the honeycomb mesh structure can evenly transfer the load to each rod when subjected to external force, avoiding local stress concentration. At the same time, the honeycomb mesh structure has the characteristics of multi-directional force transmission, that is, the load can be transmitted in multiple directions, so that the structure can still maintain good stability when subjected to complex loads.

[0041] Furthermore, in this embodiment, the mesh structure layer 30 is made of nylon.

[0042] Furthermore, the thickness of the mesh structure layer 30 is 2-3.5 mm; the aperture of the mesh 31 of the mesh structure layer 30 is 6-12 mm.

[0043] Furthermore, the thickness of the foam material layer 20 is 15-35 mm.

[0044] Further, the thickness of the filling interval is 8-10 mm.

[0045] Can pass the puncture resistance test. For specific test structure, see Table 1 and Figure 5 :

[0046]

[0047]

[0048] Table 1

[0049] It can be seen from the above embodiments that, when the thickness of the nylon mesh structure is the same, although they can all pass the test, when the aperture of the mesh structure layer is in the range of 8-10 mm, the larger the aperture, the greater the puncture depth, proving that the steel cone penetrates deeper, so the impact resistance is relatively poor, specifically:

[0050] According to Example 1, Example 2, and Example 3, when the material of the mesh structure layer is nylon material, the thickness of the mesh structure layer is 2 mm, and the density of the foam material layer is consistent, the larger the pore size of the mesh structure layer, the more likely it is to pass the test. However, the puncture depths of the helmet during the test are 21 mm, 22 mm, and 23 mm, respectively, that is, the puncture depth will gradually increase. The greater the puncture depth of the helmet, the more likely it is to be broken by a heavy object when worn. Therefore, when the thickness of the mesh structure layer is consistent and the thickness of the foam material layer is consistent, the pore size is smaller, it is not easy to be punctured, the impact resistance is better, and the safety of use is better.

[0051] According to Example 4, Example 5, and Example 6, when the mesh material layer is made of nylon material, the thickness of the mesh structure layer is 3 mm, and the density of the foam material layer is consistent, the larger the pore size of the mesh structure layer, the more likely it is to pass the test. However, the puncture depths of the helmet during the test are 17 mm, 18 mm, and 20 mm, respectively, that is, the puncture depth will gradually increase. The greater the puncture depth of the helmet, the more likely it is to be broken by a heavy object when worn. Therefore, when the thickness of the mesh structure layer is consistent and the thickness of the foam material layer is consistent, the smaller the pore size, the less likely it is to be punctured, the better the impact resistance, and the better the safety of use.

[0052] The thickness of the mesh structure layer in Examples 4, 5 and 6 is 3 mm, which is greater than the thickness of the mesh structure layer in Examples 1, 2 and 3 (2 mm). Although all of them can pass the test, it is obvious that the puncture depths of the helmets in Examples 4, 5 and 6 during the test are 17 mm, 18 mm and 20 mm, respectively, which are less than the puncture depths of the helmets in Examples 1, 2 and 3 during the test (21 mm, 22 mm and 23 mm, respectively). That is, at the same density, the thickness of the nylon layer increases, and the impact resistance is better.

[0053] It is worth noting that in Example 4, Example 5, and Example 6, when the thickness of the mesh structure layer is 3 mm, the impact resistance test effect is better. However, at this thickness, the density of the mesh structure layer is the same, and the weight of the helmet is obviously greater than that of the helmets in Example 1, Example 2, and Example 3 when the thickness of the mesh structure layer is 2 mm.

[0054] Furthermore, it can be seen from Example 7, Example 8, and Example 9 that when the material of the mesh material layer is nylon material, the thickness of the mesh structure layer is 3.5 mm, and the density of the foam material layer is consistent, the larger the pore size of the mesh structure layer, the better the test results. However, the puncture depths of the helmets during the test were 14 mm, 16 mm, and 17 mm, respectively, that is, the puncture depth will gradually increase. The greater the puncture depth of the helmet, the easier it is to be smashed by a heavy object when worn. Therefore, when the thickness of the mesh structure layer is consistent and the thickness of the foam material layer is consistent, the smaller the pore size, the less likely it is to be punctured, the better the impact resistance, and the better the safety of use.

[0055] Similarly, in Example 7, Example 8, and Example 9, when the thickness of the mesh structure layer is 3.5 mm, the impact resistance test effect is better. However, at this thickness, the density of the mesh structure layer is the same, and the weight of the helmet is obviously greater than that of the helmet in Example 4, Example 5, and Example 6 when the thickness of the mesh structure layer is 3 mm.

[0056] Therefore, it can be seen from the above embodiments that in the present application, based on the fact that the weight of the helmet is too heavy and affects the comfort, the pore size of the mesh structure layer in the helmet is preferably 8-10 mm, and the thickness of the nylon layer can be preferably 3 mm, so that the weight of the helmet is moderate and has better test performance.

[0057] Comparative Example 1 shows that, although the mesh structure layer has a pore size of less than 6 mm, it can pass the test. However, when the mesh material layer has the same density, the mesh structure layer has a pore size of less than 6 mm, which increases the weight of the helmet, and the foam particles are not easy to fill the gaps during foaming, so the head will be heavier when worn. In addition, Comparative Example 2 shows that the mesh structure layer has a pore size of more than 10 mm, which cannot pass the test, and the helmet has poor safety when used.

[0058] According to Example 1, Example 2, Example 3, Comparative Example 3 and Comparative Example 4, when the mesh structure layer is made of non-nylon materials such as iron sand mesh and mesh iron sheet, although the test can be passed, the weight of the helmet is heavy, so the wearing comfort is poor.

[0059] Furthermore, in order to improve the adhesion between the mesh structure layer 30 and the foam material layer 20 and prevent them from detaching after being used for a period of time, gripping columns 32 can be protruded on both sides of the periphery of the mesh structure, and filling holes are provided in the gripping columns 32. The gripping columns 32 can be protruded on both sides of the periphery of the mesh structure. In this way, during the foaming process, the gripping columns 32 on both sides can extend into the foam material layer 20 and form an interlocking with the foam material layer 20. On the one hand, the filling holes can be filled with the foam material layer 20, and the filling holes having a deeper filling hole than the mesh 31 structure can be filled with foam; on the other hand, the area of ​​the foam structure layer coated on the surface of the gripping claw is larger, which increases the direct interlocking strength of the two, and it is not easy for the two to detach after interlocking.

[0060] Furthermore, the helmet shell 10, the mesh structure layer 30 and the foam material layer 20 are all provided with corresponding ventilation openings 11, so that after the helmet is worn, it can be ventilated through the ventilation openings 11, thereby improving the comfort of the helmet.

[0061] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A lightweight impact-resistant helmet, characterized in that: It comprises a helmet shell, wherein a mesh structure layer and a foam material layer are arranged on the inner side of the helmet shell, wherein the mesh structure layer is spaced apart from the inner side wall of the helmet shell to form a filling space; the foam material layer is coated on the mesh structure layer and filled in the filling space and the mesh holes of the mesh structure layer.

2. The lightweight impact-resistant helmet according to claim 1, characterized in that: The foam material layer is used to be formed on the inner side of the helmet shell by a foaming process after the mesh structure layer is installed on the helmet shell, and is filled into the filling space to cover the mesh structure layer.

3. The lightweight impact-resistant helmet according to claim 1, characterized in that: The helmet shell is formed by PVC material through a vacuum forming process; the thickness of the helmet shell is 0.5-3mm.

4. The lightweight impact-resistant helmet according to claim 1, characterized in that: The mesh structure layer is honeycomb mesh; the mesh holes of the mesh structure layer have a plurality of hole walls, the plurality of hole walls are connected at an angle and are arranged to form the mesh holes; the hole walls of two adjacent mesh holes are connected by ribs.

5. The lightweight impact-resistant helmet according to claim 4, characterized in that: The mesh structure layer is made of nylon material.

6. The lightweight impact-resistant helmet according to claim 1, characterized in that: The thickness of the mesh structure layer is 2-3.5 mm; the aperture of the mesh of the mesh structure layer is 6-12 mm.

7. The lightweight impact-resistant helmet according to claim 6, characterized in that: The thickness of the foam material layer is 15-35 mm.

8. The lightweight impact-resistant helmet according to claim 7, characterized in that: The thickness of the filling interval is 8-10 mm.

9. The lightweight impact-resistant helmet according to any one of claims 1 to 8, characterized in that: Grasping columns are protrudingly provided on both sides of the periphery of the mesh structure; and filling holes are provided in the grasping columns.

10. The lightweight impact-resistant helmet according to any one of claims 1 to 8, characterized in that: The helmet shell, the mesh structure layer and the foam material layer are all provided with corresponding ventilation openings.

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