An impact-resistant protective element, a helmet and uses thereof

Abstract

The present invention belongs to the technical field of protective gear, and specifically relates to an impact-resistant protective element, a helmet and its use. The impact-resistant protective element provided by the present invention comprises a support layer facing the impact side, a collapse layer facing the protection side, and a slip layer connected between the support layer and the collapse layer; the support layer, the slip layer and the collapse layer are all elastic and are formed by 3D printing in one piece; the stiffness of the support layer is greater than the stiffness of the collapse layer so that the collapse layer collapses preferentially when under pressure; a plurality of slip units are arranged in an array in the slip layer; the slip unit has a first connection end connected to the support layer and a second connection end connected to the collapse layer; the slip layer deflects when a tangential force is applied to both ends, so that the support layer and the collapse layer form a relative sliding motion. The impact-resistant protective element provided by the present invention has excellent impact-resistant protection performance and excellent ventilation and air permeability effects. The helmet provided by the present invention not only protects the safety of the user's head, but also significantly reduces the stuffiness of the head.

Description

Technical Field

[0001] The invention belongs to the technical field of protective gear, and in particular relates to an anti-impact protective element, a helmet and uses thereof. Background Art

[0002] With the rise of national fitness, cycling has become one of the more popular sports. During cycling, it is often necessary to wear special protective gear to protect the limbs and improve the safety of cycling. The head, as an important part of the body, needs to be protected. If you accidentally fall off the bike while riding, the impact angle of the head is unpredictable. In the case of severe impact, the high-intensity friction will cause the head and helmet to rotate relative to each other. This sudden rotation will cause the brain to stretch, twist or even tear, which may lead to serious consequences such as concussion and cerebral hematoma.

[0003] At present, most helmets on the market are composed of composite hard shell, foam liner, cloth lining, tether set, etc. The external hard shell mainly plays a role in impact resistance, and the internal foam liner can play a role in comfort and cushioning to a certain extent. In addition, there is also a rotational cushioning structure formed by setting a screw and a low-friction layer of plastic between the foam liner and the cloth lining of the helmet, but the rotational cushioning effect of this structure is weak and is not conducive to the ventilation and heat dissipation of the helmet. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an anti-impact protective element, a helmet and uses thereof.

[0005] The impact-resistant protective element provided by the present invention comprises a support layer facing the impact side, a collapse layer facing the protection side, and a slip layer connected between the support layer and the collapse layer; the support layer, the slip layer and the collapse layer are all elastic and are formed by 3D printing in one piece; the stiffness of the support layer is greater than that of the collapse layer, so that the collapse layer collapses preferentially when under pressure; a plurality of slip units are arranged in an array in the slip layer; the slip unit has a first connection end connected to the support layer and a second connection end connected to the collapse layer; the slip layer deflects when a tangential force is applied to both ends, so that the support layer and the collapse layer form a relative slip motion.

[0006] Furthermore, in the above-mentioned anti-impact protection element, the sliding unit is in the shape of a straight rod, the first connecting end is vertically connected to the supporting layer, and the second connecting end is vertically connected to the collapsed layer.

[0007] Furthermore, in the above-mentioned anti-impact protection element, the sliding unit is composed of multiple bent elastic rods; one ends of all the elastic rods in the same sliding unit are connected together to form a first connecting end, the other ends of all the elastic rods in the same sliding unit are connected together to form a second connecting end, and the middle parts of all the elastic rods in the same sliding unit are far away from each other.

[0008] Furthermore, in the above-mentioned anti-impact protection element, the elastic rod is arc-shaped.

[0009] Furthermore, in the above-mentioned anti-impact protection element, the elastic rod is in a broken line shape.

[0010] Furthermore, in the above-mentioned impact-resistant protection element, the support layer and the collapse layer each form a three-dimensional network structure inside, and the internal space of the three-dimensional network structure of the support layer, the internal space of the three-dimensional network structure of the collapse layer, and the internal space of the sliding layer are interconnected to form a gas exchange chamber.

[0011] Furthermore, in the above-mentioned impact-resistant protection element, lateral reinforcement layers are arranged on both sides of the support layer and on both sides of the collapse layer, and the lateral reinforcement layers close to both sides of the slip layer are densely covered with through holes, which connect the internal space of the three-dimensional network structure of the support layer and the internal space of the three-dimensional network structure of the collapse layer.

[0012] Furthermore, in the above-mentioned impact protection element, the three-dimensional network structures of the support layer and the collapse layer have multiple structural nodes and multiple structural rods, and several structural rods are led out from the structural nodes, and the two ends of the structural rods are led to different structural nodes.

[0013] Furthermore, in the above-mentioned impact-resistant protection element, the structural parameters of the three-dimensional network structure of the support layer are not completely the same as the structural parameters of the three-dimensional network structure of the collapse layer, so that the stiffness of the support layer is greater than the stiffness of the collapse layer; the structural parameters of the three-dimensional network structure include: the average number of structural rods directly connected to each structural node, the average rod diameter of each structural rod, and the average length of each structural rod.

[0014] The present invention also provides a helmet, comprising a hard shell and an impact-resistant protective element arranged inside the hard shell, wherein the impact-resistant protective element is the above-mentioned impact-resistant protective element, and the collapsed layer faces one side of the human head, and the supporting layer is close to one side of the hard shell.

[0015] The above-mentioned helmet has many usage scenarios, and is preferably used for cycling sports as a head protector worn on the head of a cycling athlete to protect the athlete's head.

[0016] Beneficial Effects

[0017] The impact-resistant protective element provided by the present invention has excellent impact-resistant protective performance. The three-layer structure of the support layer, the sliding layer and the collapse layer can jointly absorb and disperse various forms of impact forces, effectively reducing the damage of external impacts to the protected parts.

[0018] The impact-resistant protective element provided by the present invention has excellent ventilation and air permeability effects. The presence of the gas exchange cavity enables the protected part to be effectively ventilated and heat-dissipated, thereby reducing the feeling of stuffiness and keeping it dry and comfortable.

[0019] The helmet provided by the present invention has excellent safety and comfort, protects the user's head safety, and reduces the stuffiness caused by long-term wearing of the helmet. It is suitable for various usage scenarios, especially for cyclists. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the anti-impact protection element of Example 1.

[0021] Figure 2 It is a schematic diagram of the structure of the anti-impact protection element of Example 1 in a sliding state.

[0022] Figure 3 This is a schematic diagram of the structure of the sliding unit of Example 1.

[0023] Figure 4 This is a schematic structural diagram of the impact-resistant protection element of Example 2.

[0024] Figure 5 This is a schematic diagram of the structure of the sliding unit of Example 2.

[0025] Figure 6 This is a schematic diagram of the structure of the anti-impact protection element of Example 2 in a sliding state.

[0026] Figure 7 This is a schematic structural diagram of the anti-impact protection element of Example 3.

[0027] Figure 8 This is a schematic structural diagram of the sliding unit of Example 3.

[0028] Fig. 9 This is a schematic diagram of the structure of the anti-impact protection element of Example 3 in a sliding state. DETAILED DESCRIPTION

[0029] The present invention is further illustrated by the following examples, which are intended to more clearly illustrate the technical solution of the present invention and should not be construed as a limitation.

[0030] Example 1

[0031] like Figure 1An impact protection element shown includes a support layer 1 facing the impact side, a collapse layer 3 facing the protection side, and a slip layer 2 connected between the support layer 1 and the collapse layer 3; the support layer 1, the slip layer 2 and the collapse layer 3 are all elastic and are formed by 3D printing in one piece; the stiffness of the support layer 1 is greater than the stiffness of the collapse layer 3 so that the collapse layer 3 collapses first when under pressure. The support layer 1 is used to maintain the overall shape of the entire element and has sufficient stiffness to withstand the impact force and disperse it to other layers. When impacted, the support layer 1 will also deform, but the deformation is small to maintain the overall shape and prevent foreign objects from invading other layers. The collapse layer 3 has a lower stiffness than the support layer 1, and will deform first when under pressure to absorb and disperse the impact force. This allows the protected part to be better attached to the collapse layer when impacted, further reducing the damage caused by the impact force.

[0032] like Figure 1 As shown, a plurality of sliding units 21 are arranged in an array in the sliding layer 2; the sliding unit 21 has a first connection end 211 connected to the support layer 1 and a second connection end 212 connected to the collapse layer 3; when the sliding layer 2 is subjected to tangential forces at both ends, it deflects to form a Figure 2 In the state shown, the support layer 1 and the collapsed layer 3 form a relative sliding motion. The sliding layer 2 is the core part of the anti-impact protection element that can realize the sliding buffering protection. When subjected to a tangential force, due to the deflection of the sliding unit 21, the support layer 1 and the collapsed layer 3 on both sides of the sliding layer 2 form a relative sliding motion. This sliding motion helps to buffer the impact force and reduce the damage to the protected part.

[0033] In this embodiment, the sliding unit 21 is as follows Figure 3 As shown in the straight rod shape, the first connection end 211 is vertically connected to the support layer 1 , and the second connection end 212 is vertically connected to the collapse layer 3 .

[0034] In this embodiment, the support layer 1 and the collapse layer 3 each form a three-dimensional network structure inside, and the internal space of the three-dimensional network structure of the support layer 1, the internal space of the three-dimensional network structure of the collapse layer 3, and the internal space of the slip layer 2 are interconnected to form a gas exchange cavity. The existence of the gas exchange cavity enables the protected part to obtain excellent ventilation and air permeability, avoids stuffiness and sweating, and keeps the protected part dry and comfortable.

[0035] In this embodiment, lateral reinforcement layers are provided on both sides of the support layer 1 and on both sides of the collapse layer 3, and the lateral reinforcement layers close to both sides of the slip layer 2 are densely covered with through holes, which connect the internal space of the three-dimensional network structure of the support layer 1 and the internal space of the three-dimensional network structure of the collapse layer 3.

[0036] In this embodiment, the three-dimensional network structure of the support layer 1 and the collapse layer 3 has multiple structural nodes and multiple structural rods, and several structural rods are drawn from the structural nodes, and the two ends of the structural rods are drawn to different structural nodes. The structural parameters of the three-dimensional network structure of the support layer 1 are not completely the same as the structural parameters of the three-dimensional network structure of the collapse layer 3, so that the stiffness of the support layer 1 is greater than the stiffness of the collapse layer 3; the structural parameters of the three-dimensional network structure include: the average number of structural rods directly connected to each structural node, the average rod diameter of each structural rod, and the average length of each structural rod. Specifically, increasing the number of structural rods can usually increase the stiffness of the entire network structure. The more connections between the structural nodes, the stronger the interaction between the structures, the stronger the overall rigidity, and the elastic modulus increases accordingly. Increasing the rod diameter of the structural rod can increase its ability to resist deformation, thereby increasing the stiffness of the entire structure. A larger rod diameter provides greater stiffness and a stronger resistance to external forces. Increasing the length of the structural rod means that the distance between the structural nodes increases, thereby reducing the rigidity of the entire structure. Longer structural rods are more likely to bend and deform, providing a larger deformation space.

[0037] Example 2

[0038] like Figure 4 The impact protection element shown includes a support layer 1 facing the impact side, a collapse layer 3 facing the protection side, and a slip layer 2 connected between the support layer 1 and the collapse layer 3 .

[0039] The difference between the impact protection element of this embodiment and that of the first embodiment lies in the structure of the slip unit 21 in the slip layer 2 . Figure 5 The sliding unit 21 of this embodiment is schematically shown. The sliding unit 21 is composed of multiple arc-shaped elastic rods 219. One ends of all the elastic rods 219 in the same sliding unit 21 are connected together to form a first connection end 211, and the other ends of all the elastic rods 219 in the same sliding unit 21 are connected together to form a second connection end 212. The middle parts of all the elastic rods 219 in the same sliding unit 21 are far away from each other. Figure 6 The figure shows the structure of the impact protection element in the sliding state. Compared with the straight rod-shaped sliding unit 21, the sliding unit 21 composed of multiple arc-shaped elastic rods 219 has less influence on the thickness when it deflects, which is conducive to maintaining the stability of the protected part. This is because the elastic rod 219 is prefabricated in an arc-shaped shape, which is easier to adaptively deform than a straight rod.

[0040] Example 3

[0041] like Figure 7 The impact protection element shown includes a support layer 1 facing the impact side, a collapse layer 3 facing the protection side, and a slip layer 2 connected between the support layer 1 and the collapse layer 3 .

[0042] The difference between the impact protection element of this embodiment and that of the first embodiment lies in the structure of the slip unit 21 in the slip layer 2 . Figure 8 The sliding unit 21 of this embodiment is schematically shown. The sliding unit 21 is composed of a plurality of elastic rods 219 bent in fold lines. One ends of all the elastic rods 219 in the same sliding unit 21 are connected together to form a first connection end 211, and the other ends of all the elastic rods 219 in the same sliding unit 21 are connected together to form a second connection end 212. The middle parts of all the elastic rods 219 in the same sliding unit 21 are far away from each other. Fig. 9 The figure shows the structure of the impact protection element in the sliding state. Compared with the straight rod-shaped sliding unit 21, the sliding unit 21 composed of multiple folded line bent elastic rods 219 has less influence on the thickness when it deflects, which is conducive to maintaining the stability of the protected part. This is because the elastic rod 219 is prefabricated in a folded line bent shape, which is easier to adaptively deform than a straight rod.

[0043] Example 4

[0044] This embodiment provides a helmet based on the above-mentioned impact protection element, including a hard shell and an impact protection element arranged inside the hard shell, the impact protection element is any one of the impact protection elements in embodiments 1 to 3, and the collapsed layer 3 faces the side of the human head, and the support layer 1 is close to the side of the hard shell. This kind of helmet has excellent ventilation effect, and when the head is hit at different angles, the impact protection element can effectively buffer the impact in different directions.

[0045] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the present invention so that people familiar with the technology in this field can understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-impact protective element, characterized in that: The invention comprises a support layer (1) facing the impact side, a collapse layer (3) facing the protection side, and a slip layer (2) connected between the support layer (1) and the collapse layer (3); the support layer (1), the slip layer (2) and the collapse layer (3) are all elastic and are formed by 3D printing in one piece; the stiffness of the support layer (1) is greater than that of the collapse layer (3), so that the collapse layer (3) collapses preferentially when under pressure; a plurality of slip units (21) are arranged in an array in the slip layer (2); the slip unit (21) has a first connection end (211) connected to the support layer (1) and a second connection end (212) connected to the collapse layer (3); the slip layer (2) deflects when a tangential force is applied to both ends, so that the support layer (1) and the collapse layer (3) form a relative sliding motion; The sliding unit (21) is composed of a plurality of bent elastic rods (219); one end of all the elastic rods (219) in the same sliding unit (21) is connected together to form the first connecting end (211), the other ends of all the elastic rods (219) in the same sliding unit (21) are connected together to form the second connecting end (212), and the middle parts of all the elastic rods (219) in the same sliding unit (21) are far away from each other.

2. The impact protection element according to claim 1, characterized in that: The sliding unit (21) is in the shape of a straight rod, the first connecting end (211) is vertically connected to the supporting layer (1), and the second connecting end (212) is vertically connected to the collapsed layer (3).

3. The impact protection element according to claim 1, characterized in that: The elastic rod (219) is in an arc shape or a broken line shape.

4. The impact protection element according to any one of claims 1 to 3, characterized in that: The support layer (1) and the collapse layer (3) each form a three-dimensional network structure inside, and the internal space of the three-dimensional network structure of the support layer (1), the internal space of the three-dimensional network structure of the collapse layer (3), and the internal space of the slip layer (2) are interconnected to form a gas exchange cavity.

5. The impact protection element according to claim 4, characterized in that: Transverse reinforcement layers are provided on both sides of the support layer (1) and on both sides of the collapse layer (3), and the transverse reinforcement layers close to both sides of the slip layer (2) are densely covered with through holes, and the through holes connect the internal space of the three-dimensional network structure of the support layer (1) and the internal space of the three-dimensional network structure of the collapse layer (3).

6. The impact protection element according to claim 4, characterized in that: The three-dimensional network structures of the support layer (1) and the collapsed layer (3) both have a plurality of structural nodes and a plurality of structural rods, a plurality of structural rods are led out from the structural nodes, and the two ends of the structural rods are led to different structural nodes.

7. The impact protection element according to claim 6, characterized in that: The structural parameters of the three-dimensional network structure of the support layer (1) are not completely the same as the structural parameters of the three-dimensional network structure of the collapsed layer (3), so that the stiffness of the support layer (1) is greater than the stiffness of the collapsed layer (3); The structural parameters of the three-dimensional network structure include: the average number of structural rods directly connected to each structural node, the average rod diameter of each structural rod, and the average length of each structural rod.

8. A helmet, characterized in that: The invention comprises a hard shell and an impact-resistant protective element arranged on the inner side of the hard shell, wherein the impact-resistant protective element is the impact-resistant protective element according to any one of claims 1 to 7, and the collapse layer (3) faces the side of the human head, and the support layer (1) is close to the side of the hard shell.

9. Use of the helmet according to claim 8, characterized in that: The helmet is used for cycling sports and is worn on the head of a cycling athlete as a head protector.

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