Composite fiber cloth foot support device with progressive elastic force

Abstract

The application discloses a composite fiber cloth foot support device with progressive elasticity, which comprises a bottom layer made of composite fiber cloth, and a support layer arranged above the bottom layer and made of composite fiber cloth, wherein the support layer is not less than one layer, the support layer and the bottom layer are closely attached, the bottom layer and the support layer are bonded by using composite resin, and the support force is formed on the arch part of the foot, the length direction of the support layer is smaller than that of the bottom layer, a first length difference is formed, and the support device forms a stepped structure with different thicknesses in the thickness direction, so that the progressive elastic force is formed. Because the first support layer is subjected to bending and stress at the same time, force superposition is performed, a progressive transition from soft to hard is achieved, and ergonomics is more in line with. The human body can bounce or move forward better, and the force exerted and the force borne are more uniform and controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foot support devices, in particular to a composite fiber cloth foot support device with progressive elasticity. BACKGROUND

[0002] Composite fiber cloth gradually obtains wide application because of its characteristics of light weight, high strength and high toughness. In recent years, it has been gradually applied to the field of sports shoes and insoles, because its unique characteristics and intense sports and strong change of sports scene are very matched, and it has been widely used in this field.

[0003] For example, in the technical field of insoles, the layering technology is generally used for production, that is, multiple layers of carbon fiber (or glass fiber or aramid fiber) are hardened and bonded by resin material to form a hard carbon fiber insole. The purpose of increasing elasticity and strengthening hardness is achieved, for example, the prior art solutions: CN202514711U and CN216932081U, both of which use uniform layering technology to strengthen the structure of the insole. However, the main disadvantage of this structure is that the carbon fiber cloth is a sheet material with uniform thickness, so its elasticity is also uniform. This leads to a problem that the elasticity of a single piece of carbon fiber is not enough to provide support, but when the number of layers is too large, the hardness of the insole will be too large and cannot be deformed. Because during exercise, the forefoot will form a bending angle, and from the arch, the rear part will not deform. This human feature leads to the need to provide a certain strength in the front part of the insole, but the strength cannot be too large, otherwise the bending of the forefoot part will be difficult, which will affect the health of the foot. Therefore, the existing layering technology does not improve this problem.

[0004] Another technical disadvantage of the existing design is that the insole and the foot are characterized by a wide area in the forefoot and a relatively wide area in the rear heel, and the arch area is relatively narrow. Therefore, another disadvantage of the existing layering technology solution also appears. In the case of consistent material and thickness, the narrower the width, the more likely it is to deform under the bending of external force. Therefore, the insole of the existing technology is more likely to deform in the arch area than in the shoe palm area during exercise, causing discomfort. In addition, in a high-intensity exercise environment, the front half of the foot generates more bending force in the length direction and more torsional and bending force in the width direction. Therefore, the design of the shoe palm part of the insole is more difficult, and the elasticity recovery and strength control of the shoe palm part need to be more consistent with the human engineering in the exercise state.

[0005] In the field of shoe sole technology, such as the published patent document CN216932081U, a carbon fiber flat device is also arranged in the outsole of the sneaker to enhance the elasticity and strength of the sole. However, this technical solution also has similar technical problems with insoles. If it is easy to bend, the number of layers of carbon fiber cannot be too much (generally only 1 to 2 layers), but in this case, the arch position cannot form effective support. If you want to increase the strength, you must increase the number of layers, but too many layers will result in too much hardness, which will make the sole difficult to bend, causing fatigue of the feet and legs. At the same time, because the carbon fiber flat device is too hard, the force difference between it and the outsole is too large (that is, when bending, the outsole is generally made of PU, rubber and EVA, which has a large elasticity and soft material. The carbon fiber plate has a large strength and is not easy to bend), thereby forming a cutting effect (that is, the carbon fiber flat device will cut the outsole)

[0006] Therefore, a new technical solution is needed to improve this problem so that the foot support device can be more ergonomic, and the forefoot and sole can be easily bent while maintaining good support at the arch position. From front to back, the foot support device can maintain strong elasticity and high strength while producing a progressive elastic force and support force. SUMMARY

[0007] The purpose of the present application is to improve the above-mentioned defects, and to provide a composite fiber cloth foot support device with progressive elasticity, which improves this problem by arranging a layered difference technical solution, thereby realizing an insole that can produce a progressive elastic force and support force.

[0008] The purpose of the present application is achieved by the following means:

[0009] A composite fiber cloth foot support device with progressive elasticity. After hardening, the composite fiber cloth has high strength and hardness, good compression resistance, bending and elastic recovery, so it is widely used in high stress scenarios, and is subsequently used in the field of insoles and foot support devices. However, because its characteristics come from the number of layers and thickness of the cloth, the more layers or the thicker the cloth, the better the performance. Therefore, in order to strengthen the elasticity, most market products use a simple thickness stacking scheme, resulting in an insole and support device that is too hard, causing discomfort at the heel flexion position, and even making it difficult to bend the heel. Therefore, the technical solution sets the length direction of the first support layer to be smaller than the bottom layer, forming a first length difference. When the heel is bent, the heel position of the insole forms an arc structure. During the initial bending stage, only the bottom layer is stressed, and the bottom layer is easy to bend. Subsequently, because the first support layer begins to bend, stress is also generated, and force is superimposed. This results in an increase in elasticity from the toe position to the heel position, forming a progressive elasticity at the frequent bending position of the heel. This achieves a gradual transition from soft to hard hardness, making the foot feel no foreign body in the shoe, and is more in line with ergonomics. In this way, when the human body moves upward or forward, the insole produces a corresponding elastic force during the process of returning to its original state, achieving shock absorption when bouncing down and providing a rebound force when rising, making the human body bounce or move forward more effectively, and the force exerted and the force received are more evenly controlled.

[0010] In the above description, as a preferred solution, the support layer is a two-layer structure, including a first support layer and a second support layer, the first support layer is arranged above the bottom layer, and the second support layer is arranged above the first support layer. The shape of the second support layer corresponds to the first support layer, the second support layer and the first support layer are closely attached, the length direction of the second support layer is smaller than that of the first support layer, and a second length difference is formed in the direction of the shoe palm for generating progressive elasticity. Through the superposition of multiple layers and the design of the length difference, the elasticity of the support device is more uniform. The thickness at the arch position is increased, so that the strength at the arch position is greater, and the arch position is less likely to deform.

[0011] In the above description, another technical solution is that the support layer is a three-layer structure, including a first support layer, a second support layer and a third support layer, the first support layer is arranged above the bottom layer, the second support layer is arranged above the first support layer, and the third support layer is arranged above the second support layer. The shapes of the second and third support layers correspond to the first support layer, the three support layers are closely attached, the lengths of the first support layer, the second support layer and the third support layer are different, and a second length difference and a third length difference are formed in the direction of the shoe palm for generating progressive elasticity.

[0012] In the above description, as a preferred solution, the bottom layer is in the shape of a foot sole, and is divided into a foot sole part, an arch part and a heel part, the first length difference and the second length difference are arranged in the foot sole part, and the arch part is upwardly protruding, and the height of the arch part is higher than that of the foot sole part and the heel part. In order to be more ergonomic, the arch part is upwardly protruding. This technical solution is more suitable for the insole of the shoe pad-shaped supporting device and the big sole of the ball shoe.

[0013] In the above description, as another preferred solution, the bottom layer is in the shape of an axe head, and is wide at both ends and narrow in the middle part, the middle part is upwardly protruding, and the height of the middle part is higher than that of the both ends, and the first length difference and the second length difference are arranged in the both ends respectively. This technical solution is suitable for the product as an arch pad, and protects and supports the arch.

[0014] In the above description, as a preferred solution, the angle between the warp and weft weaving angles of the composite fiber cloth of the bottom layer and the supporting layer and the length direction axis of the shoe pad is 40-50 degrees. Because the composite fiber cloth does not have enough stretching deformation degree, the 40-50 degree mode is used for laying, and the deformation principle of parallelogram is used, so as to prolong the service life of the shoe pad, that is, deformation is easy to occur in the longitudinal direction of the shoe pad, so as not to be damaged and cracked.

[0015] In the above description, as a preferred solution, the composite fiber cloth is aramid fiber or carbon fiber or glass fiber, and the specification of the composite fiber cloth is 100g-400g / square meter

[0016] In the above description, as a preferred solution, the composite fiber cloth is aramid fiber or carbon fiber or glass fiber, and the composite fiber cloth is coated with epoxy resin or thermoplastic polyurethane or polycarbonate.

[0017] The beneficial effects of the present application are that: through the design of the composite fiber cloth with length difference, stress is generated at the same time, and the force is gradually added, so that the elastic force gradually increases from the toe position to the foot sole position, and the gradual elastic force is formed at the frequently bending position of the foot sole, which is more ergonomic. In this way, when the human body moves upward or forward, the shoe pad product generates a corresponding elastic force in the process of restoring to the original state, realizes shock absorption when bouncing down and provides elastic force when rising, so that the human body can bounce or move forward better, the force exerted and the force received are more uniform and controlled, and the fatigue of the foot sole and the leg is reduced through the gradual elastic force. At the same time, the arch product can provide more stable support. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0019] Figure 1 is a side sectional view of the prior art;

[0020] Figure 2A top view of embodiment 1;

[0021] Figure 3 A side sectional view of embodiment 1;

[0022] Figure 4 A side sectional view of embodiment 2;

[0023] Figure 5 A side sectional view of template 4;

[0024] Figure 6 A side sectional view of embodiment 3

[0025] Figure 7 A side sectional view of embodiment 4;

[0026] Figure 8 A top view of embodiment 5

[0027] Figure 9 A side sectional view of embodiment 5 applied to an insole

[0028] Figure 10 A side sectional view of embodiment 2 inlaid in a PU outsole

[0029] In the figure, 1 is a bottom layer, 2 is a first support layer, 3 is a second support layer, 4 is a third support layer, 5 is a fourth support layer, 6 is a first length difference, 7 is a second length difference, 8 is a third length difference, 9 is a fourth length difference, 10 is a first layering line, and 11 is a PU outsole. DETAILED DESCRIPTION

[0030] The present application relates to a composite fiber foot support device with progressive elasticity, and is further described in detail in combination with the drawings and specific implementation cases, but is not used to limit the present application.

[0031] The foot support device of the technical solution mainly includes the following products, such as insoles, arch pads, and outsole linings.

[0032] Take the insole as an example for description:

[0033] Take the carbon fiber insole manufacturing process as an example:

[0034] 1. Preform the mold according to the shape and size required by the insole.

[0035] 2. Use 100-400G / m2 carbon fiber cloth, and cut it into the required size such as 38, 39, and 40 inches by using the common 90-degree weaving method (i.e., the warp and weft are crossed at a 90-degree angle) to prepare the material.

[0036] 3. Apply release wax or spray release agent on the surface of the upper and lower molds.

[0037] 4. Apply composite resin, such as epoxy resin, thermoplastic polyurethane, polycarbonate, polyamide, ethylene-vinyl acetate copolymer, etc. on the lower mold.

[0038] 4. Lay the prepared first layer of carbon fiber cloth of the bottom layer 1 on the surface of the lower mold (the included angle between the warp-weft weaving angle of the first layer of carbon fiber cloth of the bottom layer 1 and the length direction axis of the insole is 45 degrees), and apply composite resin on top of it.

[0039] 5. Lay the prepared second layer of carbon fiber cloth of the bottom layer 1 on the surface of the first layer of carbon fiber cloth (the size and shape of the second layer of carbon fiber cloth are the same as those of the first layer of carbon fiber cloth), the included angle between the warp-weft weaving angle of the second layer of carbon fiber cloth of the bottom layer 1 and the length direction axis of the insole is 45 degrees, and apply composite resin on top of it. The bottom layer 1 is composed of two layers of carbon fiber cloth.

[0040] 7. Lay the prepared first support layer 2 of carbon fiber cloth on the bottom layer 1, the included angle between the warp-weft weaving angle of the first support layer 2 of carbon fiber cloth and the length direction axis of the insole is 45 degrees, and apply composite resin on top of it. The first support layer 2 is composed of one layer of carbon fiber cloth.

[0041] 8. Lay the prepared second support layer 3 of carbon fiber cloth on the first support layer 2, the included angle between the warp-weft weaving angle of the second support layer 3 of carbon fiber cloth and the length direction axis of the insole is 45 degrees, and apply composite resin on top of it. The second support layer 3 is composed of one layer of carbon fiber cloth.

[0042] 9. Different positions and different layers of carbon fiber cloth can be set according to customer needs.

[0043] 10. Press the upper mold down to close the mold with the lower mold, and the mold closing pressure is 5-50 MPa (generally adjusted according to the difference of resin materials, such as the forming pressure of phenolic molding compound is generally 30-50 MPa, the forming pressure of epoxy-phenolic molding compound is 5-30 MPa, and the forming pressure of polyester molding compound is 7-10 MPa).

[0044] 11. Continue to maintain the pressure, and the pressure maintaining time is 1-3 hours, which is set according to the size, thickness and size difference of the product, for example, the pressure maintaining time for a 36-inch insole with 3 layers of carbon fiber cloth is 1 hour, the pressure maintaining time for a 45-inch insole with 5 layers of carbon fiber cloth is 2.5 hours, and the pressure maintaining time for an insole with a size of 45 inches or more and 6 layers of carbon fiber cloth or more is 3 hours.

[0045] 12. Curing, place the insole in the mold at room temperature of 15-35 degrees Celsius for further curing, and the curing time is 18-24 hours.

[0046] 13. Edging. The insole is trimmed to eliminate burrs and excess material.

[0047] The carbon fiber insole is made according to the above production process and method. In order to further understand the role of the insole of the present application, the state of human foot movement is described.

[0048] There are generally four states of force on the normal movement of the human foot, the first being the walking state, the second being the running state, the third being the jumping state, and the fourth being the kicking state. The force and movement state of the foot in the four states are different.

[0049] The first walking state, the movement characteristics of the foot are that in the initial stage, the heel is first landed, an impact force is generated on the heel part, then the heel to the entire sole is landed, then the heel to the middle part of the forefoot does not produce a sharp deformation, the foot is bent at the middle part of the sole when the foot is lifted, and the bending angle continuously increases until the toe position. The force state of the foot is that in the initial stage, the heel is impacted by the ground, then the leg exerts force on the sole, at this time the force is small, and the elastic force continuously increases with the increase of the bending angle, at the moment when the toe leaves the ground, the foot does not produce force and is not affected by external force.

[0050] The second running state, the movement characteristics of the foot are that in the initial stage, the toe is landed, the sole starts to bend, reaches the middle part of the sole, the bending angle is large, and the force on the foot is large. The force state of the foot is that the foot starts to exert force before the toe leaves the ground, the leg exerts force, and the muscle is transmitted to the sole, at this time the sole exerts a large force, the bending angle is gradually reduced, until the toe leaves the ground, the foot does not produce force and is not affected by external force.

[0051] The third jumping state, the movement characteristics of the foot are that in the initial stage, the heel to the middle part of the forefoot does not produce a sharp deformation, the foot is bent at the middle part of the sole, and the bending angle continuously increases, until the bending angle is large at the middle part of the sole. The force state of the foot is that in the initial stage, the force is small, and the elastic force continuously increases with the increase of the bending angle, at the moment when the middle part of the sole leaves the ground, the foot depression force reaches the peak, and the foot starts to kick back, after the middle part of the sole leaves the ground, the foot almost does not produce force and is almost not affected by external force.

[0052] The fourth is the kicking state, the movement characteristics of the foot are that in the initial stage, the foot is in a suspended state, the sole is not affected by external force, when the toe or the left and right sides of the sole is contacted by a ball, the ball exerts a pressure on the toe or the left and right sides of the sole, one of the above three parts starts to bend and deform, and returns to normal after the ball leaves the foot. The force state is that when the toe or the left and right sides of the sole is contacted by the ball, the sole starts to deform, the corresponding part of the sole starts to produce a rebound force, when the deformation of the sole is large, the rebound force is also large, when the ball leaves the sole, the foot almost does not produce force and is almost not affected by external force.

[0053] Example 1, using two layers of structure, the bottom layer 1 is a single layer of 200g / m2 carbon fiber cloth (also can be used 2 layers of carbon fiber cloth long layering), thickness of 0.2MM, the angle between the warp and weft of carbon fiber cloth and the length direction axis of insole is 45 degrees, the shape of carbon fiber cloth corresponds to the shape of foot, above the bottom layer 1 is the first support layer 2. The front end of the first support layer 2 is shorter than the bottom layer 1, the front end of the first support layer 2 stops at the middle position of the sole, forming the first layering line 10 at this position. The connection is made by epoxy resin.

[0054] Example 2 and example 1 have the same layer structure, using the arc structure of arch.

[0055] Example 3 and example 1 have the same layer structure, the difference is that the first support layer 2 is aligned with the bottom layer 1 in the length direction and the heel direction.

[0056] Example 4 is a three layer structure, containing bottom layer 1, first support layer 2 and second support layer 3, the length of the first support layer 2 is less than the length of the second support layer 3.

[0057] The technical solution is a ladder-like layering structure, the length of each layer can be designed individually according to actual needs, as long as there is a layer difference between each support layer, the effect of ladder progressive elasticity can be achieved.

[0058] The working state of the embodiment 1 is described in combination with four motion states of the foot. If a conventional 2-layer carbon fiber cloth insole (i.e. an insole without a stacking difference) is used, when walking, the foot is gradually bent from the heel to the toe, and the bending angle is small at the middle of the sole, and then gradually increases to the toe, and the corresponding elastic force of the insole is large. Because the thickness of the insole is the same, the elastic force is relatively uniform. The greater the bending angle, the greater the rebound force of the insole. The result is that the leg muscles need to exert more force to bend the sole during the bending stage of the sole, thereby offsetting the elastic force generated by the insole, which further causes the leg muscles to be more easily fatigued. In addition, because the width of the arch of the insole is the smallest, if the stress of the insole is too large (exceeding the stress near the weak arch), the arch of the insole will suddenly bend and deform (similar to bending a chopstick or other strip-shaped object, under certain stress conditions, the weak position will first break or suddenly deform), and will protrude outward or inward, which will not provide support for the arch and will squeeze the arch, causing the user to feel very uncomfortable. Correspondingly, the technical solution of the embodiment 1 uses two layers of carbon fiber cloth at the rear end and the middle, so that the arch of the insole is stable and is not squeezed by the stress deformation of the insole, thereby protecting the arch. When the insole is bent and the stress increases at the middle and front of the sole, because there is only one layer of carbon fiber cloth, the elastic force generated is reduced, the sole is more easily bent, the fatigue of the leg muscles is reduced, the stress of the insole is reduced, the bending stress at the sole is transmitted to the thinner front end of the sole, thereby assisting the sole to generate a forward thrust, making walking more comfortable and labor-saving. Moreover, because the arch has two layers, the corresponding elastic force is large, and the front end has only one layer, the corresponding elastic force is small, so when bending, the stress is transferred to the front end, and the arch of the insole does not deform, thereby ensuring comfort. At the same time, because the insole has a two-layer structure at the middle of the sole and a single-layer structure at the front end, the insole will generate a gradual elastic force, which can reduce the fatigue of the leg muscles and provide a forward power during the recovery of the insole, thereby assisting the forward movement.

[0059] In running, if the existing technical solution is adopted, the 2-layer carbon fiber cloth insole (i.e. insole without layer difference) will apply force to the foot when the toes land, the leg will bend the foot to facilitate the subsequent generation of forward thrust to make the body move forward, but the entire insole will generate a larger rebound force due to the consistent thickness, which will offset the force applied by the leg, and more easily cause the leg muscles to fatigue. Similarly, if the bending strength is too high, it will also cause the insole to deform at the arch. The technical solution of the present embodiment 1 is adopted, the insole is single-layer structure at the front of the foot, and the elastic force gradually increases from the toes to the middle of the foot when bending, because of the structure of the insole with layer difference, the larger elastic force is reached at the double-layer structure. In this way, the insole of the present embodiment generates a weak elastic force when the toes land during running, and a larger elastic force at the foot position. In this way, the elastic force of the toes landing is reduced, thereby reducing the fatigue of the leg muscles, and the larger elastic force at the foot position provides elastic force to assist the body to move forward, thereby achieving a smaller reaction force in the initial stage and a larger elastic force in the later stage to provide power to the body to move forward. This progressive elastic force makes people more comfortable when running and more in line with ergonomics.

[0060] In kicking a ball, the toes and forefoot are generally subjected to force, and the ball directly contacts the foot to apply pressure to the foot, and the corresponding foot generates a corresponding elastic force under the control of the leg muscles. If a conventional carbon fiber insole is used, because of the high hardness, the insole is not easy to deform, and under strong force, two problems are caused, one is that the insole and the soccer shoe produce a long-term and strong shearing effect, which causes the insole to cut and damage the soccer shoe. The other is that because of the same number of layers, the hardness is too large, which causes the foot to not be able to well control the movement trajectory of the ball, and the direction of the ball rebound is not accurately controlled. The advantage of the present embodiment is that a single-layer design is adopted at the front of the foot, and the rigidity is small, when the ball and the foot touch, the front end of the insole will produce bending deformation, so that the foot feels more accurately, and at the same time, the shearing and pulling effect with the soccer shoe will not occur, so that the soccer shoe is better protected, and the movement direction of the ball can be more accurately controlled.

[0061] The following is the test result of 42 yards of carbon fiber insole according to the arch protruding structure of embodiment 2.

[0062] Test purpose: Because the human body will bend the foot when walking or running, this test simulates the bending degree, deformation degree and elastic force of the insole at the foot when the foot moves.

[0063] Test method 1: The insole is landed at the heel end, the heel of the insole is clamped, and the angle between the horizontal plane and the insole is 50 degrees. Pressure is applied to the horizontal plane, and the elastic force data and deformation size of the side surface of the insole at the foot position contacting the horizontal plane are obtained.

[0064] Test Method 2: The insole is placed with the heel end on the ground, the arch and the heel intersection is clamped, the angle between the horizontal plane and the clamped part is 50 degrees, and the horizontal plane is pressed. The elastic data and deformation size obtained by the length of the side of the insole foot position in contact with the horizontal plane are obtained.

[0065] Test Method 3: According to test method 2, the service life test is carried out, and the damage appearance time is observed after multiple bending.

[0066] The sample specifications are as follows:

[0067] Sample 1, the specification is 240G / m2 carbon fiber cloth, a total of 3 layers of carbon fiber cloth, and there is no layer difference between the fiber cloths (i.e. the three layers of fiber cloth are the same in size and size).

[0068] Sample 2, the specification is 240G / m2 carbon fiber cloth, a total of 4 layers of carbon fiber cloth, and there is no layer difference between the fiber cloths (i.e. the three layers of fiber cloth are the same in size and size).

[0069] Sample 3, the specification is 240G / m2 carbon fiber cloth, a total of 5 layers of carbon fiber cloth, in turn from bottom to top, bottom layer 1 (the bottom layer 1 is two layers of carbon fiber, and the length is the same), first support layer 2 (two layers of carbon fiber, and the length is the same), second support layer 3 (single layer), first length difference 6 is 45MM, second length difference 7 is 30MM.

[0070] Sample 4, the specification is 240G / m2 carbon fiber cloth, a total of 5 layers of carbon fiber cloth, in turn from bottom to top, bottom layer 1, first support layer 2, second support layer 3, third support layer 4, fourth support layer 5, each layer is a single layer. The first length difference 6 is 15MM, the second length difference 7, the third length difference 8, and the fourth length difference 9 are all 30MM.

[0071] The test results according to test method 1 are as follows:

[0072]

[0073] The test results according to test method 2 are as follows:

[0074]

[0075] The test results according to test method 3 are as follows:

[0076] Serial No. Weave Angle Test Times Contact Value Separation Breakage Condition Sample 1 0 degree 2400 Contact 20MM Breakage and corner separation occurred Sample 2 0 degree 1800 Contact 20MM Breakage and corner separation occurred Sample 3 45 degree 6000 above Contact 20MM No breakage and corner separation Sample 4 45 degree 6000 above Contact 20MM No breakage and corner separation

[0077] Through the test of the above sample, it can be known that the sample 3 and 4 made according to the technical scheme of the present application can realize good bending effect, is more in line with ergonomics, and can reduce the fatigue of the feet. The first test method is to simulate the stress condition in the walking state, and the insole as a whole is bent from the back to the front. Through the test result, it can be known that the insole of the prior art is difficult to bend, and when forcibly bent, the insole will be subjected to too large stress, and the bending edge of the insole will appear at the arch. The reason for this condition is that the sole of the insole is relatively wide, and the arch is relatively narrow. Under the condition of relatively large stress, the arch will deform first, thereby losing the function. However, the technical scheme of the present application can avoid the occurrence of this problem. Both the bending effect and the support of the arch are realized.

[0078] The second test method is to simulate the stress condition of the sole of the insole when bent in the running state. Through the test data, it can be known that the rebounding force is relatively large, which will generate a reaction force on the human foot, and then the sole needs to provide a larger bending force, so that the sole and the leg muscles will appear fatigue faster. At the same time, under the action of the strong force, the edge of the insole is more likely to appear cracking and damage.

[0079] The third test method is to simulate the life test of the insole under the condition of multiple bending in the running state. According to the technical scheme, the service life of the carbon fiber insole is greatly prolonged. Under the condition of more than 6000 times of bending, no cracking phenomenon occurs in the carbon fiber layer.

[0080] The example 5 is an arch pad, the example 5 is a three-layer structure, which respectively is a bottom layer (the bottom layer is made of a single layer of carbon fiber cloth), a first support layer and a second support layer (the two support layers are made of a single layer of carbon fiber cloth). The materials used are the same as those of examples 1-4, and the production and manufacturing process of the arch pad is the same as that of the insole. The arch pad is mainly used for protecting the arch, and is suitable for

[0081] flat-footed consumers. The main application scene is to be bonded at the bottom of the ordinary conventional insole (such as Figure 8 and 9 ), and the arch pad supports the human arch. The existing arch pad mainly adopts a simple laminating technology. The defect is that if a single layer design is adopted, the arch pad cannot bear the weight of the human body and is easy to deform. If a multi-layer design is adopted, the strength is relatively high and is not easy to deform. However, the conventional insole material is relatively soft, and the arch pad and the insole are easy to separate. Moreover, the arch pad is generally in a downward arc structure, and the strength is too high to cause the shoe sole to be pierced and sheared.

[0082] The arch pad adopting the technical scheme of the present application has a gradual elastic force design, the front and rear ends are thin and easy to deform, the middle part is a multi-layer structure and has high strength, the fusion with the conventional insole is realized, and the damage to the shoe sole is reduced.

[0083] The insole is similar to a shoe pad, and the shape can be changed according to actual needs, for example, similar to a sole shape or an arc structure according to a basketball shoe template. In this specification, the insole is embedded into the outsole according to the embodiment 2 (refer to Figure 10 ).

[0084] The finished insole is placed in a PU mold (or an EVA foaming mold or a rubber mold, etc., which is not limited herein), the insole is fixed in the mold, the mold is closed, PU material is injected into the mold under pressure, and the outsole is taken out after cooling. That is, the manufacturing is completed.

[0085] The insole has the advantages that, because the basketball shoes are mostly used in sports occasions, the insole is uniformly deformed and has a gradual elastic force when the outsole is bent under force, which is in line with ergonomics, and the insole and the outsole are better integrated, the overall use effect of the shoes is better, the insole does not quickly damage the outsole, and the service life of the basketball shoes is longer.

[0086] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be considered as the protection scope of the present application.

Claims

1. A composite fiber cloth foot support device with progressive elasticity, the support device comprising a bottom layer made of hardened composite fiber cloth, and a support layer disposed above the bottom layer, the support layer being made of hardened composite fiber cloth, the support layer not being less than one layer, the support layer and the bottom layer being closely attached, the bottom layer and the support layer being bonded by using a composite resin, and being used for forming a support force on an arch portion of a foot, characterized in that: The bottom layer is in the shape of a foot sole, which is divided into a foot sole part, an arch part and a heel part. The length direction of the support layer is smaller than that of the bottom layer, forming a first length difference. The first length difference is arranged in the foot sole part. The support device forms a stepped structure in the thickness direction, and the elasticity gradually increases from the toe position to the foot sole position. The double-layer structure reaches a large elasticity. The support layer is in a two-layer structure, which is a first support layer and a second support layer. The first support layer is arranged above the bottom layer, and the second support layer is arranged above the first support layer. The shape of the second support layer corresponds to that of the first support layer. The second support layer and the first support layer are tightly attached. The length direction of the second support layer is smaller than that of the first support layer, and a second length difference is formed in the instep direction. The second length difference is arranged in the foot sole part to form a progressive elasticity. ​ 2. The composite fiber foot support device with progressive stiffness according to claim 1, characterized in that: The support layer is in a three-layer structure, and a third support layer is arranged above the second support layer. The shapes of the second and third support layers correspond to that of the first support layer. The three support layers are tightly attached. The lengths of the first, second and third support layers are different, and a second length difference and a third length difference are formed in the instep direction to generate a progressive elasticity.

3. The composite fiber foot support device with progressive stiffness according to claim 2, wherein: The arch part is upwardly convex, and the height thereof is higher than those of the foot sole part and the heel part.

4. The composite fiber foot support device with progressive stiffness according to claim 2 or 3, characterized in that: The bottom layer is in the shape of an axe head, which is wide at both ends and narrow in the middle. The middle part is upwardly convex, and the height thereof is higher than those of the two ends. The first length difference and the second length difference are arranged at the two ends, respectively.

5. The composite fiber foot support device with progressive stiffness according to claim 4, wherein: The included angle between the warp and weft weaving angles of the composite fiber cloth of the bottom layer and the support layer and the length direction axis of the insole is 40-50 degrees.

6. The composite fiber foot support device with progressive stiffness according to claim 5, wherein: The composite fiber cloth is aramid fiber or carbon fiber or glass fiber. The specification of the composite fiber cloth is 100-400 g / m2.

7. The composite fiber foot support device with progressive stiffness according to claim 6, wherein: The composite resin is epoxy resin or thermoplastic polyurethane or polycarbonate. The composite resin is epoxy resin or thermoplastic polyurethane or polycarbonate.

Images