A 3D printing based brace

Abstract

The present application relates to a 3D printing-based protective gear, which comprises a lattice structure and an elastic edge body, wherein the lattice structure is composed of at least two lattice array structure layers, the lattice array structure layers are interwoven and / or staggered, and form hollow holes, and the elastic edge body connects the periphery of the two or more lattice structure layers, and connects the periphery of the elastic edge body with the outside to form protection. The present application not only solves the problems of poor ventilation, air permeability and sweat removal, but also has strong compression resistance, thin thickness and good flexibility, so as to reduce the damage rate of the elastic body and the risk probability of injury in the user's movement process; at the same time, the structure adopted is simple, and can be used alone or in combination with a set, which is very convenient and low in cost. In addition, the protective gear is designed based on the physiological curvature of the protected part, so that the pressure difference caused by the airflow velocity difference can keep dry and cool to a certain extent, and improve the user's body feeling.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of protective gear, and particularly relates to a protective gear based on 3D printing. BACKGROUND

[0002] With the rise of the whole people movement, various sports have brought about an explosive growth, and it is very important to protect the key parts of the body during sports. During sports, the sportsmen often need to wear corresponding protective gear to protect the key parts of the body, such as the head, neck, shoulder, elbow, wrist, hand, waist, hip, knee, ankle, etc.

[0003] At present, the protective gear on the market is mainly an elastic body based on foam, soft or hard plastic injection molding, and fabric, which can effectively prevent or weaken the damage to the body when the body contacts other hard objects due to intense exercise or sudden situations through wrapping and buffering during sports. However, the above protective gear has the following defects:

[0004] 1) Poor ventilation, air permeability and sweat resistance, which directly affects the user experience;

[0005] 2) In order to obtain the required supporting force, the thickness of the protective gear needs to be increased to improve the compression resistance, so that the thickness of the protective gear is relatively thick, which directly affects the flexibility of the user during sports after wearing. Moreover, under repeated impact, the protective gear is prone to deformation or cannot be restored to the original state, so that not only the impact force cannot be evenly absorbed, but also the elastic body is easily damaged, increasing the risk of injury during sports. SUMMARY

[0006] The present application solves the technical problems of the prior art and provides a new protective gear based on 3D printing.

[0007] To solve the above technical problems, the present application adopts the following technical solutions:

[0008] A protective gear based on 3D printing comprises a lattice structure body based on the physiological curvature of the protected part and 3D printed from an elastic material, and an elastic edge body, wherein the lattice structure body is composed of at least two lattice point array structure layers, the lattice point array structure layers are interwoven and / or staggered and form hollow holes, the elastic edge body connects the profiles of the two or more lattice structure bodies, and the periphery of the elastic edge body is connected with the outside to form protection.

[0009] Preferably, the elastic edge body and the lattice structure body are formed by one-time 3D printing, which is convenient for processing and molding.

[0010] According to a specific embodiment and a preferred aspect of the present application, the protective gear further comprises an elastic resin layer formed on the lattice structure body, wherein the elastic resin layer is formed in the internal pores of each lattice array structure layer and is combined with the lattice array structure layer.

[0011] Preferably, the elastic resin layer is further formed on the outer surface of the lattice array structure layer; or / and, the pressure required for the lattice structure body to be compressed to a deformation of 50% is greater than 420N.

[0012] The present inventors have found that, by fully contacting the lattice array structure elastomer with a treatment liquid containing an elastic resin or raw materials for forming an elastic resin, a resin curing agent, and heating and curing, an elastic resin layer is formed in the internal pores of the lattice array structure elastomer and on the outer surface of the lattice array structure elastomer. The elastic resin is cured, bonded and combined with the lattice array structure elastomer, fills the internal pores of the lattice array structure elastomer, and further an elastomer with excellent mechanical properties can be obtained. Under the same weight, the elastomer has higher compression resistance; under the condition of achieving the same compression resistance, the material has lower weight. In addition, the elastic resin layer on the outer surface of the lattice array structure elastomer can reduce the surface roughness of the material, making the surface of the elastomer smooth.

[0013] According to a specific embodiment and a preferred aspect of the present application, the protective gear is a knee guard, and the lattice structure body comprises an inner lattice array structure layer and an outer lattice array structure layer, wherein the inner lattice array structure layer and the outer lattice array structure layer are arranged in a superimposed manner in the inner-outer direction, and the inner lattice cells and the outer lattice cells formed by the superimposed layers intersect to form hollow holes. The inner-outer superimposed layers form an elastic body with air permeability, which not only solves the problems of poor ventilation, air permeability and sweat resistance, but also has strong compression resistance, thin thickness and good flexibility, thereby reducing the damage rate of the elastic body and the risk probability of injury during user movement.

[0014] Preferably, the inner lattice cells are square, and the outer lattice cells are rhombic, wherein the side of each rhombus is located on the diagonal of each square, and the two diagonal lines of the rhombus correspond to the cross formed inside the square. At this time, the lattice cell structure formed not only has a three-dimensional sense of the inner-outer superimposed layers, but also has very balanced air permeability and elastic support force, while reducing the damage rate of the elastic body itself.

[0015] Specifically, the components constituting the knee guard are once formed by 3D printing. This is convenient to implement and has low cost.

[0016] At the same time, the elastic edge body can be effectively sewn with other components, so that the knee guard can be combined with other components to form a protective device.

[0017] According to another specific implementation and preferred aspect of the present application, the protective gear is a knee guard, and the lattice structure body comprises an inner lattice array structure layer and an outer lattice array structure layer, wherein the outer lattice array structure layer is partially interwoven with the inner lattice array structure layer, and forms an inner side flush with or between the inner lattice array structure layer, and an outer side protruding from the unit cell of the outer lattice array structure layer, the interwoven holes of the unit cell protrusion and the inner lattice cell of the inner lattice array structure layer of the remaining non-interwoven outer lattice array structure layer form the hollow holes. The inner and outer layers are partially interwoven and form the unit cell protrusion, and do not cause contact discomfort, and not only solve the problems of poor ventilation, air permeability and sweat removal, but also have strong compression resistance, thin thickness and good flexibility, thereby reducing the damage rate of the elastomer and the risk probability of injury during user movement.

[0018] Preferably, the knee guard comprises a ring buckle, a lock buckle and a binding strap, wherein the binding strap and the lock buckle are matched to be attached to the inner lattice array structure layer and bound to the outside of the knee to form protection; and / or the components of the knee guard are formed by 3D printing. The ring buckle, the lock buckle and the binding strap can be used alone to implement the binding protection, and the one-time forming is convenient to implement and low in cost.

[0019] According to another specific implementation and preferred aspect of the present application, the protective gear is a knee guard, and the lattice structure body comprises an inner lattice array structure layer and an outer lattice array structure layer, wherein the inner lattice array structure layer and the outer lattice array structure layer are arranged in an inner-outer separated manner when not worn; and when worn, the inner-outer attachment and misalignment of the inner lattice cell and the outer lattice cell form the hollow holes. The relatively separated inner and outer layers not only solve the problems of poor ventilation, air permeability and sweat removal, but also have strong compression resistance, thin thickness and good flexibility, thereby reducing the damage rate of the elastomer and the risk probability of injury during user movement.

[0020] Preferably, the outer lattice array structure layer is arranged in a central arch from the periphery, and comprises a central protection area in the middle and a peripheral protection area around the central protection area, wherein the buffer force formed by the central protection area is greater than the buffer force formed by the peripheral protection area.

[0021] Preferably, the thickness of the lattice array structure formed by the outer lattice array structure layer gradually decreases from the middle to the edge. In this way, the key protection of the important part is formed.

[0022] Preferably, the central protection area comprises a central layer forming a lattice array structure and an elastic reinforcing body around the central layer, wherein the elastic reinforcing body extends from the connecting end to the elastic edge body and is integrally formed, and the lattice array structure of the peripheral protection area is arranged in the area formed by the elastic reinforcing body and the elastic edge body. The elastic reinforcing body has the following functions: 1. relatively supporting the outer lattice array structure layer to separate the inner and outer layers; 2. increasing the compression resistance of the attachment of the inner and outer layers.

[0023] Preferably, the elastic reinforcing body is internally hollow and has a width smaller than that of the elastic edge-covering body. Not only the overall shape of the outer lattice point array structure layer can be changed, but also the elastic support provided by the elastic body is further strengthened, and the self-weight is further reduced.

[0024] Preferably, the knee guard comprises a bandage and an external buckle, wherein the inner lattice point array structure layer is attached and bound to the outside of the knee to form a protective layer under the cooperation of the bandage and the external buckle; and / or the components of the knee guard are formed by 3D printing. The bandage and the external buckle can be used alone to implement the binding protection, and the components are formed by one-time molding, which is convenient to implement and low in cost.

[0025] In addition, in the knee guard, the supporting force of each part can adapt to the force condition of the body part during exercise and the impact force when contacting other objects in an emergency; at the same time, a plurality of air ducts are designed in the lattice structure. Due to the arc configuration of the protective device, the pressure difference caused by the airflow velocity difference causes the airflow to enter the air duct, which can keep dry and cool to a certain extent.

[0026] Compared with the prior art, the present application has the following advantages due to the implementation of the above technical solutions:

[0027] The present application not only solves the problems of poor ventilation, air permeability and sweat removal, but also has strong compression resistance, thin thickness, good flexibility, low damage rate of the elastic body and low risk probability of injury during user exercise; at the same time, the structure is simple, and the elastic edge-covering body can be used alone or in combination with the sleeve, which is very convenient and low in cost. In addition, the protective device is designed based on the physiological curvature of the protected part, so that the pressure difference caused by the airflow velocity difference can keep dry and cool to a certain extent, and the user's body feeling is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a schematic diagram of the three-dimensional structure of the knee guard in Example 1;

[0029] Figure 2 FIG. 2 is a schematic diagram of the three-dimensional structure of the knee guard in Example 2;

[0030] Figure 3 FIG. 3 is a schematic diagram of the three-dimensional structure of the knee guard in Example 3;

[0031] 1, lattice structure body; 10, inner lattice point array structure layer; 11, outer lattice point array structure layer; 110, central protection area; a, central layer; b, elastic reinforcing body; 111, peripheral protection area;

[0032] 2, elastic edge-covering body;

[0033] 3. Ring buckle;

[0034] 4. Locking fasteners;

[0035] 5. Straps. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] Example 1

[0038] like Figure 1 As shown, the protective gear in this embodiment is a knee brace, and includes a lattice structure 1 and an elastic edging body 2, which are 3D printed from elastic material based on the physiological curvature of the knee brace.

[0039] Specifically, the lattice structure 1 includes an inner lattice structure layer 10 and an outer lattice structure layer 11, wherein the inner lattice structure layer 10 and the outer lattice structure layer 11 are stacked in the inner and outer directions, and the inner and outer lattice cells intersect to form open holes. The inner and outer layers stack together to form a breathable elastomer, which not only solves the problems of poor ventilation, breathability, and perspiration wicking, but also has strong compression resistance, thin thickness, and good flexibility, thereby reducing the damage rate of the elastomer and the probability of injury to the user during exercise.

[0040] The inner lattice cells are square, and the outer lattice cells are rhomboid. The sides of each rhombus lie on the diagonals of each square, forming a grid where the crosses inside the squares correspond to the two diagonals of the rhombuses. The resulting lattice structure not only possesses a three-dimensional feel between the inner and outer layers but also exhibits a very balanced balance of breathability and elastic support, while simultaneously reducing the damage rate of the elastomer itself.

[0041] In this example, the knee brace also includes an elastic resin layer formed on the lattice structure 1. This elastic resin layer is formed within the internal pores of each lattice structure layer and bonded to the lattice structure layers, as well as formed on the outer surface of the lattice structure layers. As a result, the elastomer exhibits higher compressive strength for the same weight; and under the same compressive strength conditions, the material has a lower weight. Furthermore, the elastic resin layer located on the outer surface of the lattice structure elastomer can reduce the surface roughness of the material, making the elastomer surface smooth.

[0042] In this example, the lattice structure 1 requires a pressure of 435N to be compressed to a deformation of 50%. To meet the needs of the buffer protection.

[0043] The elastic edge body 2 and the lattice structure 1 are formed by 3D printing at one time. It is convenient to implement and low in cost.

[0044] That is, the elastic edge body 2 is effectively stitched with other components, so that the knee guard can be combined with other components to form protection.

[0045] Example 2

[0046] As shown in Figure 2 The protective device of this embodiment is a knee guard and includes a lattice structure 1 and an elastic edge body 2.

[0047] Specifically, the lattice structure 1 includes an inner lattice point array structure layer 10 and an outer lattice point array structure layer 11, wherein the outer lattice point array structure layer 10 and the inner lattice point array structure layer 11 are partially interwoven, and the inner side is flush with the inner lattice point array structure layer, and the outer side is protruding from the lattice cell protrusion of the outer lattice point array structure layer, and the interwoven holes of the lattice cell protrusion and the inner lattice cell of the inner lattice point array structure layer of the remaining uninterwoven outer lattice point array structure layer form hollow holes.

[0048] The inner and outer layers are partially interwoven and form lattice cell protrusions, which do not cause discomfort in contact, and not only solve the problems of poor ventilation, air permeability, and sweat resistance, but also have strong compression resistance, thin thickness, and good flexibility, thereby reducing the damage rate of the elastic body and the risk probability of injury during user movement.

[0049] The arrangement of the elastic resin layer is the same as that of Example 1.

[0050] Meanwhile, the knee guard in this example includes a ring buckle 3, a lock buckle 4, and a binding belt 5, which are sleeved on the elastic edge body 2, wherein the binding belt 5 and the lock buckle 4 cooperate to adhere and bind the inner lattice point array structure layer 10 to the outside of the knee to form protection. The ring buckle, the lock buckle, and the binding belt can be used alone to implement the binding protection.

[0051] In this example, the binding belt 5 is a hollow elastic binding belt.

[0052] The components of the knee guard are formed by 3D printing at one time. One-time molding is convenient to implement and low in cost.

[0053] In addition, the buffer strength provided by the area where the lattice cell protrusions are distributed is definitely greater than the buffer strength provided by the area where the lattice cell protrusions are not distributed, which can form a differential protection requirement.

[0054] Example 3

[0055] As shown in Figure 3As shown, the protector of the embodiment is a knee guard, and comprises a lattice structure body 1 and an elastic edge body 2.

[0056] Specifically, the lattice structure body 1 comprises an inner lattice point array structure layer 10 and an outer lattice point array structure layer 11, wherein when not worn, the inner lattice point array structure layer 10 and the outer lattice point array structure layer 11 are arranged in an inner-outer spaced manner; when worn, the inner lattice cells and the outer lattice cells are formed in an inner-outer adhering and dislocation manner to form the hollow holes.

[0057] The use of the relatively spaced inner and outer layers not only solves the problems of poor ventilation, air permeability and sweat removal, but also has strong compression resistance, thin thickness and good flexibility, so as to reduce the damage rate of the elastic body and the risk probability of injury during user movement.

[0058] The outer lattice point array structure layer 11 is arranged in an arch shape from the periphery to the middle, and comprises a central protection area 110 located in the middle and a peripheral protection area 111 located in the central protection area, wherein the buffer force formed by the central protection area 110 is greater than the buffer force formed by the peripheral protection area 111.

[0059] Specifically, the thickness of the lattice point array structure formed by the outer lattice point array structure layer 11 gradually decreases from the middle to the edge. In this way, the key protection of important parts is constituted.

[0060] In this example, the central protection area 110 comprises a central layer a forming a lattice point array structure and an elastic reinforcing body b located around the central layer a, wherein the elastic reinforcing body b respectively extends from the connecting end portion to the elastic edge body 2 and is integrally formed, and the lattice point array structure of the peripheral protection area 111 is arranged in the area formed by the elastic reinforcing body b and the elastic edge body 2.

[0061] The functions of the elastic reinforcing body b are as follows: 1. relatively supporting the outer lattice point array structure layer to relatively separate the inner and outer layers; 2. increasing the compression resistance of the inner and outer layers.

[0062] The elastic reinforcing body b is hollow inside and has a width smaller than that of the elastic edge body. Not only can the overall shape of the outer lattice point array structure layer be changed, but also the elastic support force provided by the constituted elastic body can be further strengthened, and the self-weight can be further reduced.

[0063] At the same time, the structure of the formed elastic resin layer is the same as that of example 1.

[0064] In addition, the above knee guard comprises a bandage 5 and an external buckle 4, wherein under the cooperation of the bandage 5 and the external buckle 4, the inner lattice point array structure layer 10 is adhered and bound to the outside of the knee to form protection. It can be used alone, and the bandage and the external buckle can be used to implement the binding protection.

[0065] In this example, the bandage 5 is a hollow elastic binding belt.

[0066] The components constituting the knee protector are formed by 3D printing once. The one-time forming is convenient to implement and low in cost.

[0067] In summary, the application has the following advantages:

[0068] 1. Not only solves the problems of poor ventilation, air permeability and sweat removal, but also has strong compression resistance, thin thickness and good flexibility, so as to reduce the damage rate of the elastic body and the risk probability of injury during the user's movement; at the same time, the structure adopted is simple, and under the outer connection of the elastic edge body, it can be used alone or in combination with the set, which is very convenient and low in cost. In addition, the protector is designed based on the physiological curvature of the protected part, so that the pressure difference caused by the airflow velocity difference can keep dry and cool to some extent, and improve the user's body feeling.

[0069] 2. The printed lattice structure protector can adapt to the stress condition of the body part during movement and the impact force received when contacting other objects in the sudden situation according to the size ratio of the impact force of different parts, and also according to the changes of lattice density, rod diameter, and cell type.

[0070] 3. According to the actual situation of the key parts of the body during movement, the shape of the protector is designed, which is filled with lattice structure, and has a 3D printed elastic surface at the edge part of the protector. The surface is used for sewing or linking with other wearing parts, and the part contacting the body can be composed of an elastic surface layer, which is provided with holes for ventilation, air permeability and sweat removal.

[0071] 4. The material of the 3D printed lattice structure block and the elastic surface layer includes but is not limited to thermoplastic polyurethane elastomer. Such material has good elasticity, outstanding bearing capacity, oil resistance, water resistance and mildew resistance, and good thermoplasticity, which is convenient for 3D printing processing, so it is extremely suitable for the use environment, performance requirements and process requirements of sports.

[0072] 5. Compared with the prior art, the application uses the combination of multiple cell structures, utilizes the characteristics of absorbing and balancing impact force, and realizes effective protection of the key parts of the body during movement. At the same time, the lattice structure also has good recovery performance in long-term use, so the capacity of the internal impact force changes little, and the service life of the product is longer.

[0073] The above has described the application in detail, the purpose of which is to enable persons skilled in the art to understand the content of the application and implement it, and cannot limit the protection scope of the application. Any equivalent changes or modifications made according to the spirit and principle of the application should be covered within the protection scope of the application.

Claims

1. A 3D printing based brace, characterized by: The protective device comprises a lattice structure body and an elastic edge body, wherein the lattice structure body is based on the physiological curvature of the protected part and is 3D printed from an elastic material, the lattice structure body is composed of at least two lattice array structure layers, the lattice array structure layers are interwoven and / or staggered and form hollow holes, the elastic edge body connects the periphery of the two or more lattice structure bodies, and the periphery of the elastic edge body is connected with the outside to form a protection, the elastic edge body and the lattice structure body are integrally formed by 3D printing; the protective device further comprises an elastic resin layer formed on the lattice structure body, wherein the elastic resin layer is formed in the inner pores of each lattice array structure layer and is combined with the lattice array structure layer, and the elastic resin layer is also formed on the outer surface of the lattice array structure layer; the lattice structure body comprises an inner lattice array structure layer and an outer lattice array structure layer, the outer lattice array structure layer is arranged in a central arch from the periphery, and comprises a central protection area located in the middle and a peripheral protection area located in the central protection area, the central protection area comprises a central layer forming a lattice array structure and an elastic reinforcing body located around the central layer, wherein the elastic reinforcing body extends from the connecting end to the elastic edge body and is integrally formed, and the lattice array structure of the peripheral protection area is arranged in the area formed by the elastic reinforcing body and the elastic edge body.

2. The 3D printing based brace of claim 1, wherein: The lattice structure body requires a pressure greater than 420N when compressed to 50% deformation.

3. The 3D printing based brace of claim 1 or 2, wherein: The protective device is a knee guard, the inner lattice array structure layer and the outer lattice array structure layer are arranged in a superimposed manner in the inner and outer directions, and the inner lattice cells and the outer lattice cells are intersected to form the hollow holes.

4. The 3D printing based brace of claim 3, wherein: The inner lattice cells are square, and the outer lattice cells are rhombic, wherein the side of each rhombic is located on the diagonal of each square, and the two diagonal lines of the rhombic correspond to the square formed by the cross-shaped rhombic.

5. The 3D printing based brace of claim 4, wherein: The components of the knee guard are integrally formed by 3D printing.

6. The 3D printing based brace of claim 1 or 2, wherein: The protective device is a knee guard, the outer lattice array structure layer and the inner lattice array structure layer are partially interwoven, and the inner side is flush with the inner lattice array structure layer or located between the inner and outer sides of the inner lattice array structure layer, the outer side protrudes the lattice cell of the outer lattice array structure layer, and the interwoven holes of the lattice cell and the inner lattice cells of the inner lattice array structure layer which are not interwoven with the outer lattice array structure layer form the hollow holes.

7. The 3D printing based brace of claim 6, wherein: The knee guard comprises a ring buckle, a lock buckle, and a binding band, wherein the inner lattice array structure layer is attached and bound with the outside of the knee joint under the cooperation of the binding band and the lock buckle to form a protection.

8. The 3D printing based brace of claim 7, wherein: The protective device is a knee guard, and the components of the knee guard are integrally formed by 3D printing.

9. The 3D printing based brace of claim 1 or 2, wherein: The protective device is a knee guard, the inner lattice array structure layer and the outer lattice array structure layer are arranged in a separated manner in the inner and outer directions when not worn; when worn, the inner lattice cells and the outer lattice cells are attached and misaligned in the inner and outer directions to form the hollow holes.

10. The 3D printing based brace of claim 9, wherein: The central protection area forms a buffer force greater than the buffer force formed by the peripheral protection area.

11. The 3D printing based brace of claim 9, wherein: The thickness of the lattice array structure formed by the outer lattice array structure layer gradually decreases from the middle to the edge.

12. The 3D printing based brace of claim 9, wherein: The elastic reinforcing body is hollow inside and has a width smaller than that of the elastic edge body.

13. The 3D printing based brace of claim 9, wherein: The knee guard comprises a bandage and an outer buckle, wherein under the cooperation of the bandage and the outer buckle, the inner lattice point array structure layer is attached and bound with the outside of the knee to form protection.

14. The 3D printing based brace of claim 9, wherein: The components constituting the knee guard are one-time formed by 3D printing.

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