Soles and shoes for improving propulsion

Abstract

The present invention discloses a sole for enhancing thrust, comprising at least one elastic layer and at least one supporting layer, wherein the elastic layer and the supporting layer have different elasticities and hardnesses, and the elastic layer and the supporting layer are arranged in an overlapping manner to form a sole body, wherein the midfoot portion of the sole body is provided with a hollow structure, and the hollow structure can cause the midfoot portion of the sole body to undergo elastic deformation. The sole and shoe for enhancing thrust of the present invention have an overall linkage force feedback mechanism, which can recover the energy of each step of the wearer landing and release it again when pushing off the ground, thereby enhancing the thrust of the sole; the sole has a good supporting effect, is more in line with the movement gait of the human foot, and is comfortable to the foot, while also having good elastic properties; and has good shock absorption performance, which can provide the wearer with better cushioning protection.

Description

Technical Field

[0001] The present invention relates to the field of footwear, in particular to a sole capable of improving propulsion force and a shoe comprising the sole. Background Art

[0002] As living standards continue to improve, people's demands for functionality and comfort in shoes are also increasing. The sole is a very important part of the shoe. In order to make the sole have multiple beneficial properties at the same time, different materials and structures are often combined to form a complete sole. This is also a key research direction in the development of sports shoes.

[0003] Elasticity and stability are two key indicators of shoe sole performance. To ensure both functions are achieved, midsoles are typically constructed from highly elastic materials and a rigid support structure is attached to the midsole to achieve optimal support. However, maintaining optimal stability requires a support structure that significantly impacts the sole's elasticity, weakening its rebound ability. Excessive bending stiffness can also interfere with the natural flexion of the foot, causing discomfort. Insufficient support can also lead to poor sole stability, making sports injuries more likely. Summary of the Invention

[0004] The present invention provides a sole and a shoe that improve the thrust, wherein the sole has good elasticity and stability and can improve the thrust. The specific technical solution is as follows:

[0005] A sole for improving thrust assist comprises at least one elastic layer and at least one support layer, wherein the elastic layer and the support layer have different elasticities and hardnesses, and the elastic layer and the support layer are overlapped to form a sole body, wherein the midfoot portion of the sole body is provided with a hollow structure, and the hollow structure enables the midfoot portion of the sole body to undergo elastic deformation.

[0006] Furthermore, the elastic layer includes a first elastic portion and a second elastic portion, and the first elastic portion and the second elastic portion are overlapped with at least one supporting layer to form a sole body.

[0007] Furthermore, the support layer includes a first support plate and a second support plate, and the first elastic portion, the second elastic portion, the first support plate and the second support plate are overlapped to form a sole body.

[0008] Furthermore, the overlapping order of the first elastic part, the second elastic part, the first support plate and the second support plate from top to bottom is: the first elastic part, the first support plate, the second elastic part and the second support plate; or the first support plate, the first elastic part, the second support plate and the second elastic part; or the first support plate, the first elastic part, the second elastic part and the second support plate; or the first elastic part, the first support plate, the second support plate and the second elastic part.

[0009] Furthermore, a groove structure is provided on the elastic layer, and the groove structure and the support layer together form a hollow structure in the midfoot area of ​​the sole body.

[0010] Furthermore, the sole body includes a first elastic part, a first support plate, a second elastic part and a second support plate arranged in sequence from top to bottom, the groove structure is arranged on the second elastic part, and the groove structure and the first support plate together form a hollow structure in the midfoot part of the sole body.

[0011] Furthermore, the second support plate is an arc-shaped thin sheet structure, and is correspondingly arranged below the hollow structure.

[0012] Furthermore, the hollow structure is a bow-shaped hollow structure.

[0013] Furthermore, the hollow structure crosses the inner and outer sides of the sole body, so that the inner and outer sides of the sole body are connected to each other.

[0014] Furthermore, the first support plate includes a front section, a middle section and a rear section. The front section is correspondingly arranged at the forefoot position of the sole body, the middle section is correspondingly arranged at the midfoot position of the sole body, and the rear section is correspondingly arranged at the heel position of the sole body. The front section and the middle section have different bending stiffnesses.

[0015] Furthermore, the rear section of the first support plate is a protruding angular structure, which is arranged close to the inner area of ​​the heel to prevent excessive eversion of the human foot when landing.

[0016] Furthermore, the thickness of the front section of the first support plate is smaller than the thickness of the middle section of the first support plate, so that the front section and the middle section have different bending stiffnesses.

[0017] Furthermore, the first support plate is composed of multiple layers of fiber cloth stacked and composited, and the front section, middle section and rear section of the first support plate include different numbers of fiber cloth layers and / or materials, so that the front section, middle section and rear section of the first support plate have different bending stiffness.

[0018] Furthermore, the bottom of the sole body is provided with an outsole, which is made of one, two or more of butadiene rubber, styrene butadiene rubber, natural rubber, butyl rubber, nitrile rubber, isoprene rubber, chloroprene rubber, brominated butyl rubber, thermoplastic polyurethane, cast polyurethane, mixed polyurethane, nylon elastomer, and thermoplastic polyester elastomer.

[0019] Furthermore, the elastic layer is made of one, two or more of nylon elastomer, thermoplastic polyurethane, cast polyurethane, mixed polyurethane, thermoplastic polyester elastomer, ethylene-octene copolymer, ethylene-octene block copolymer, ethylene-vinyl acetate copolymer, styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer, high styrene rubber, brominated butyl rubber, butadiene rubber, silicone rubber, EPDM rubber, natural rubber and nitrile rubber.

[0020] Furthermore, the supporting layer is at least one of nylon, nylon elastomer, thermoplastic polyurethane, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and acrylonitrile-butadiene-styrene copolymer; or is a composite of at least one of carbon fiber, aramid fiber, glass fiber, and polyimide fiber and at least one of nylon, nylon elastomer, thermoplastic polyurethane, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and acrylonitrile-butadiene-styrene copolymer.

[0021] A shoe comprises any one of the above-mentioned soles for improving propulsion force.

[0022] The sole and shoe of the present invention for improving thrust-assisting force have the following advantages:

[0023] 1. The sole has a linked force feedback mechanism that can recover the energy of each step the wearer takes and release it again when pushing off the ground, thereby increasing the propulsion force of the sole;

[0024] 2. The sole has good support effect and is more in line with the movement gait of the human foot, making the foot feel comfortable and having good elasticity;

[0025] 3. Good shock absorption performance, which can provide better cushioning protection for the wearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of the sole for improving the thrust in the present invention.

[0027] Figure 2 This is an enlarged schematic diagram of the midfoot portion of the sole for enhancing the propulsion force according to the present invention.

[0028] Figure 3 This is an exploded view of the sole of the present invention that improves the propulsion force.

[0029] Figure 4 Schematic diagram of the structure of the first support plate in the present invention.

[0030] Figure 5 This is a curve diagram of the vertical reaction force exerted on the foot by the ground during a gait cycle.

[0031] Figure 6 This is a comparison chart of dynamics (ground reaction force) indicators.

[0032] Figure 7 A comparison chart of ankle and knee joint work.

[0033] Figure 8 Two sample shoes were used for comparative testing (the left side is a sample shoe with a sole having enhanced thrust according to the present invention, and the right side is a sample shoe with a normal sole). DETAILED DESCRIPTION

[0034] In order to better understand the purpose, structure and function of the present invention, the sole and shoe for improving thrust force of the present invention will be described in further detail below with reference to the accompanying drawings.

[0035] The thrust-boosting sole of the present invention includes a sole body, which includes an elastic layer and a support layer. The elastic layer and the support layer are arranged overlappingly to form the sole body. The sole body may include one elastic layer or two or more elastic layers; and may include one support layer or two or more support layers. The two or more elastic layers and the support layer are arranged in a staggered and overlapping composite configuration, thereby providing the sole with both good elasticity and stability.

[0036] A hollow structure is also formed in the midfoot area of ​​the sole body, and the hollow structure can undergo elastic deformation when the sole is under pressure. The hollow structure is preferably a hollow structure, and the side of the sole body close to the inner side of the human foot is defined as the inner side of the sole body, and the side of the sole body close to the outer side of the human foot is defined as the outer side of the sole body. The hollow structure then crosses the inner and outer sides of the sole body, so that the inner and outer sides of the sole body are interconnected; the hollow structure can also be a hollow structure arranged inside the sole body. The hollow structure is preferably a complete arched or oblate whole, or it can be two or more hollow structures or hollow structures concentratedly arranged in the midfoot area of ​​the sole body. The midfoot area of ​​the sole is usually the main pressure-bearing area. Providing a hollow structure in this area can provide a more effective deformation space for the sole, increase shock absorption performance, and provide better cushioning protection for the wearer.

[0037] In summary, the thrust-boosting sole of the present invention utilizes a composite structure of multiple elastic layers and a support layer, with a hollow structure also integrated into the midfoot area. This composite structure allows both the elastic layer and the hollow structure to simultaneously undergo cushioning deformation upon initial contact with the ground. Simultaneously, the support layer in the sole rapidly rebounds, returning the support layer to its original shape and promoting the rapid recovery of the deformed hollow structure. During this process, a linked force feedback mechanism is generated within the sole, recovering the energy generated by each step and releasing a significant amount of rebound energy back into the foot, thereby enhancing the sole's thrust.

[0038] A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the sole for enhancing thrust in the present invention includes a sole body, which is composed of an elastic layer and a support layer. The elastic layer and the support layer have different elasticities and hardnesses. The elastic layer includes a first elastic part 1 and a second elastic part 3. The first elastic part 1 and the second elastic part 3 are both made of highly elastic materials and have good elastic properties. The first elastic part 1 and the second elastic part 3 are arranged in an overlapping manner, with the first elastic part 1 located at the top and the second elastic part 3 located at the bottom. The support layer includes a first support plate 2. The first support plate 2 is a thin plate structure made of hard material and has good supporting properties. The first support plate 2 is embedded between the first elastic part 1 and the second elastic part 3. The first elastic part 1, the first support plate 2 and the second elastic part 3 are overlapped and compositely arranged to form an integral structure.

[0040] Furthermore, the first support plate 2 is slightly smaller than the first elastic portion 1 and is curved, similar to the shape of the human foot sole. The first support plate 2 is fitted onto the lower surface of the first elastic portion 1. The second elastic portion 3 is provided with an arched groove structure. The groove structure is located on the side of the second elastic portion 3 near the first elastic portion 1 and is positioned corresponding to the midfoot portion of the sole body. The groove structure, the first support plate 2, and the first elastic portion 1 together form a hollow structure 6 in the midfoot portion of the sole body.

[0041] The above is a preferred embodiment of forming the hollow structure 6. Furthermore, the first support plate 2 and the second elastic portion 3 may be closely fitted together, and a groove structure may be provided on the lower surface of the first elastic portion 1, so that the first elastic portion 1 and the first support plate 2 together form a hollow structure 6. The hollow structure 6 may also be directly provided within the first elastic portion 1 or the second elastic portion 3 through an integral molding process, or two or more hollow structures 6 may be formed simultaneously within the first elastic portion 1 and the second elastic portion 3.

[0042] Furthermore, the hollow structure 6 is preferably an integral, arched, hollow structure that extends across the inner and outer sides of the sole body, thereby interconnecting the inner and outer sides. The hollow structure 6 not only effectively enhances the shock absorption performance of the sole, providing better cushioning protection for the wearer, but also, by working together with the first elastic portion 1, the second elastic portion 3, and the first support plate 2, significantly increases the propulsion force exerted by the sole on the human foot, thereby enhancing the sole's athletic performance.

[0043] Furthermore, the support layer includes a second support plate 4, which is a curved, thin sheet structure that is shorter and narrower than the first support plate 2. The second support plate 4 is disposed below or above the hollow structure 6 to provide better support for the sole where the hollow structure 6 is located, while also promoting the rapid recovery of the hollow structure 6 after deformation, further enhancing the propulsion force.

[0044] Preferably, if Figure 2 and Figure 3 As shown, the second support plate 4 is fitted on the lower surface of the second elastic part 3. Of course, the second support plate 4 can also be fitted on the upper surface of the second elastic part 3, that is, in the groove structure of the second elastic part 3, or on the upper surface of the first elastic part 1.

[0045] Further, if Figure 4 As shown, the first support plate 2 is generally similar to the shape of the sole of the human foot, and includes a front section 21, a middle section 22 and a rear section 23. The front section 21 is correspondingly arranged at the forefoot position of the sole body, the middle section 22 is correspondingly arranged at the midfoot position of the sole body, and the rear section 23 is correspondingly arranged at the heel position of the sole body.

[0046] Specifically, the rear section 23 of the first support plate 2 is a protruding angular structure, extending from the middle section 22 of the first support plate 2 to the heel area of ​​the sole; the angular structure is only provided in the inner area near the heel to prevent the problem of excessive eversion when the human foot lands. The front section 21, the middle section 22 and the rear section 23 of the first support plate 2 are of uneven thickness. Among them, the thickness of the front section 21 is thinner than that of the middle section 22. The purpose is to reduce the bending stiffness of the front section 21 and make it easier for the forefoot of the human body to bend. The thicker middle section 22 has a higher hardness and can provide a better support effect. This three-section uneven thickness support plate structure can make different areas of the first support plate 2 have different bending stiffnesses, so that the sole has better stability while being more in line with the movement gait of the human foot, improving comfort and reducing sports injuries or discomfort caused by excessive support.

[0047] Of course, in addition to the above-mentioned three-section non-uniform thickness method, materials with different bending stiffnesses can also be used to respectively form the front section 21, the middle section 22 and the rear section 23 of the first support plate 2, so as to achieve the purpose and effect of making different areas of the first support plate 2 have different bending stiffnesses.

[0048] Furthermore, the first support plate 2 and the second support plate 4 are both formed by stacking and compounding multiple layers of fiber cloth bonded with epoxy resin. The fiber cloth can be carbon fiber, glass fiber, or the like. The front section 21, middle section 22, and rear section 23 of the first support plate 2 comprise different numbers of fiber cloth layers and / or different materials, thereby providing the front section 21, middle section 22, and rear section 23 of the first support plate 2 with different bending stiffnesses.

[0049] Specifically, the number of fiber cloth layers included in the front section 21 of the first support plate 2 can be made smaller than the number of fiber cloth layers included in the middle section 22 of the first support plate 2, thereby making the bending stiffness of the front section 21 smaller than that of the middle section 22. Alternatively, the front section 21 and the middle section 22 of the first support plate 2 can be made of materials or a combination of materials with different bending stiffnesses, thereby making the bending stiffness of the front section 21 smaller than that of the middle section 22.

[0050] Preferably, the fiber cloth included in the rear section 23 of the first support plate 2 is carbon fiber, and the fiber cloth included in the front section 21 and the middle section 22 of the first support plate 2 is carbon fiber and / or glass fiber.

[0051] In this preferred embodiment, the first elastic portion 1, the first support plate 2, the second elastic portion 3, and the second support plate 4 are sequentially overlapped to form the sole body. Furthermore, the overlapping order of the first elastic portion 1, the second elastic portion 3, the first support plate 2, and the second support plate 4 from top to bottom can also be: first support plate 2, first elastic portion 1, second support plate 4, and second elastic portion 3; or first support plate 2, first elastic portion 1, second elastic portion 3, and second support plate 4; or first elastic portion 1, first support plate 2, second support plate 4, and second elastic portion 3.

[0052] In this preferred embodiment, the topmost first elastic portion 1 closely conforms to the foot, providing a more comfortable feel. The first support plate 2 provides strong support for the foot. Furthermore, the three-segment distributed structure of the first support plate 2 enhances sole stability while ensuring good bending performance, making it more comfortable and safe to wear. The second elastic portion 3 provides shock absorption and cushioning in the lower layer of the sole. The second support plate 4 further enhances the foot's transitional feel during exercise. When this four-layer structure is combined with the arched hollow structure 6 located in the midfoot region of the sole body, the overall deformability and resilience of the sole body are significantly enhanced, providing the wearer with strong shock absorption and rebound during walking or running, enhancing the propulsion effect.

[0053] The following uses one of the layup methods of the first support plate 2 and the second support plate 4 as an example to illustrate the specific structure and arrangement of the first support plate 2 and the second support plate 4. It should be noted that this embodiment is only a preferred embodiment and does not limit the specific structure and arrangement of the first support plate 2 and the second support plate 4.

[0054] The thickness of each layer of the fiber cloth used for laying the first support plate 2 and the second support plate 4 is 0.12 mm to 0.15 mm. The total thickness of the first support plate 2 is 1.0 mm to 1.3 mm, and the total thickness of the second support plate 4 is 1.0 mm.

[0055] Specifically, the thickness of the front section 21 of the first support plate 2 is 1.0 mm, and the ply laying method is:

[0056] (1) First layer: 3K carbon fiber twill;

[0057] (2) Second layer: 45-degree carbon fiber unidirectional tape;

[0058] (3) The third layer: 90-degree glass fiber unidirectional tape;

[0059] (4) The fourth layer: 90-degree glass fiber unidirectional tape;

[0060] (5) Fifth layer: 45-degree carbon fiber unidirectional tape;

[0061] (6) Sixth layer: 3K carbon fiber twill.

[0062] The thickness of the middle section 22 of the first support plate 2 is 1.3 mm, and the ply laying method is:

[0063] (1) First layer: 3K carbon fiber twill;

[0064] (2) Second layer: 90-degree carbon fiber unidirectional tape;

[0065] (3) The third layer: 45-degree carbon fiber unidirectional tape;

[0066] (4) The fourth layer: 90-degree glass fiber unidirectional tape;

[0067] (5) Fifth layer: 90-degree glass fiber unidirectional tape;

[0068] (6) Sixth layer: 45-degree carbon fiber unidirectional tape;

[0069] (7) Seventh layer: 90-degree carbon fiber unidirectional tape;

[0070] (8) Eighth layer: 3K carbon fiber twill.

[0071] The thickness of the rear section 23 of the first support plate 2 is 1.0 mm, and the ply laying method is:

[0072] (1) First layer: 3K carbon fiber twill;

[0073] (2) Second layer: 45-degree carbon fiber unidirectional tape;

[0074] (3) The third layer: 45-degree carbon fiber unidirectional tape;

[0075] (4) The fourth layer: 45-degree carbon fiber unidirectional tape;

[0076] (5) Fifth layer: 45-degree carbon fiber unidirectional tape;

[0077] (6) Sixth layer: 3K carbon fiber twill.

[0078] The thickness of the second support plate 4 is 1.0 mm, and the laying method is:

[0079] (1) First layer: 3K carbon fiber twill;

[0080] (2) Second layer: 90-degree carbon fiber unidirectional tape;

[0081] (3) The third layer: 90-degree carbon fiber unidirectional tape;

[0082] (4) Fourth layer: 3K carbon fiber twill.

[0083] Furthermore, in order to cooperate with the support layer to provide the best force feedback performance, the elastic layer in the present invention is preferably made of nylon elastomer material, which has the advantage of a density of 0.13g / cm 3 , Shore C hardness of 42, rebound rate (Energy return) of 80%, peak acceleration (Peak G) of 11.48 (10mm thickness). This material can make the sole lighter and provide higher rebound performance. Of course, the elastic layer can also be made of one, two or more materials selected from polyurethane (thermoplastic polyurethane, cast polyurethane, mixed polyurethane), thermoplastic polyester elastomer, ethylene-octene copolymer, ethylene-octene block copolymer, ethylene-vinyl acetate copolymer, styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer, high styrene rubber, brominated butyl rubber, butadiene rubber, silicone rubber, EPDM rubber, natural rubber, and nitrile rubber.

[0084] Furthermore, the support layer in the present invention can be at least one of nylon, nylon elastomer, thermoplastic polyurethane, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and ABS (acrylonitrile-butadiene-styrene copolymer); or it can be a composite of at least one of carbon fiber, aramid fiber, glass fiber, and polyimide fiber and at least one of the above resins or elastomers.

[0085] Further, if Figure 1 、 Figure 2 and Figure 3 As shown, the bottom of the sole body is also provided with an outsole 5, which is preferably made of a cast polyurethane material with a hardness (Shore A) of 62 and a density of 1.20 g / cm 3 , tensile strength 13.4MPa, elongation at break 632%, right-angle tear strength 59.6N / mm, Akron abrasion (1.61km) 0.03cm 3 , DIN wear 11mm 3, yellowing resistance level 4, and aging resistance level 4. The outsole 5 has excellent wear resistance and is fitted to the lower surface of the sole body, providing excellent anti-slip properties and beneficial effects such as fatigue and wear resistance. Furthermore, the overall thickness of the outsole 5 is very thin, which not only meets the wearer's actual exercise needs, but also reduces the thickness and weight of the sole, achieving the functional goal of lightweighting the shoe body and providing the wearer with a better wearing experience.

[0086] In addition, the outsole 5 can also be made of one, two or more of butadiene rubber, styrene butadiene rubber, natural rubber, butyl rubber, nitrile rubber, isoprene rubber, chloroprene rubber, brominated butyl rubber, polyurethane (thermoplastic polyurethane, cast polyurethane, mixed polyurethane), nylon elastomer, and thermoplastic polyester elastomer.

[0087] The present invention also includes a shoe, the sole of which is any one of the above-mentioned soles for improving propulsion force.

[0088] Further, if Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown in FIG and , after a series of whole shoe performance tests, the sole and shoe for improving propulsion force of the present invention have many beneficial effects.

[0089] Impact test (ASTM F1976-13)

[0090] Peak acceleration (Peak G) is used to evaluate the shock absorption performance of the shoe. The smaller the peak acceleration, the better the shock absorption performance of the shoe. The rebound rate (Energy return) is used to evaluate the rebound performance of the shoe. The larger the rebound rate, the better the shock absorption performance of the shoe.

[0091] The sole and the shoe of the present invention,

[0092] Heel area: Peak G 8.07, Energy return 65.41%;

[0093] Midfoot: Peak acceleration (Peak G) 8.38, rebound rate (Energy return) 71.37%.

[0094] Shoes with ordinary soles without the hollow structure 6,

[0095] Heel area: Peak G 8.89, Energy return 64.77%;

[0096] Midfoot: Peak acceleration (Peak G) 9.94, rebound rate (Energy return) 69.51%.

[0097] From the results of the impact test, it can be seen that the sole and shoe with enhanced thrust force of the present invention have more excellent shock absorption performance and better rebound performance.

[0098] Biomechanical testing

[0099] Through biomechanical comparison tests, it was found that the sole and shoe of the present invention that improves the thrust can significantly reduce the ground impact force on the human body when running. Figure 5 As shown, the curve represents the vertical ground reaction force that the human body is subjected to when walking or running, which is generally a double-peak curve. A comparative test was conducted on two sample shoes, one with a hollow structure 6 and the other without a hollow structure 6. It was found that the first peak force positively correlated with the injury decreased significantly, indicating that the sole and shoe with enhanced thrust of the present invention can greatly reduce the ground impact force on the human body when running.

[0100] like Figure 6 As shown, the comparison results of dynamic indicators show that:

[0101] Peak1 represents the first peak;

[0102] Time of Peak 1 indicates the time to reach the first peak;

[0103] The above two indicators are related to impact force. The smaller Peak1 is, the better the impact resistance of the shoe is. The longer the Time of Peak1 is displayed, the better the impact resistance of the shoe is.

[0104] Max Loading Rate indicates the maximum loading rate;

[0105] Mean Loading Rate indicates the average loading rate;

[0106] The above two indicators are related to the degree of knee joint injury. The smaller the Max Loading Rate and Mean Loading Rate are, the better the effect of the sole in reducing knee joint injury is.

[0107] Therefore, by Figure 6 As can be seen from the data shown in , the sole and shoe of the present invention that improve the thrust can significantly reduce the first peak impact force when landing, which is much better than the average level in the shock absorption database.

[0108] Further, if Figure 7As shown, by comparing the work done by the ankle joint and the knee joint, it can be seen that, whether it is the knee joint or the ankle joint, the sole and shoe with enhanced thrust of the present invention do less positive and negative work than the comparison shoe, which can reduce the movement burden of the wearer's ankle joint and knee joint during exercise and reduce the risk of injury to the knee joint and ankle joint.

[0109] The sole and shoe of the present invention for improving thrust-assisting force have the following advantages:

[0110] 1. The sole has a linked force feedback mechanism that can recover the energy of each step the wearer takes and release it again when pushing off the ground, thereby increasing the propulsion force of the sole;

[0111] 2. The sole has good support effect and is more in line with the movement gait of the human foot, making the foot feel comfortable and having good elasticity;

[0112] 3. Good shock absorption performance, which can provide better cushioning protection for the wearer.

[0113] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A sole for improving thrust, characterized in that: The sole comprises an elastic layer and a support layer, wherein the elastic layer and the support layer have different elasticities and hardnesses, and the elastic layer and the support layer are overlapped to form a sole body, wherein a hollow structure is provided in the midfoot portion of the sole body, and the hollow structure enables the midfoot portion of the sole body to undergo elastic deformation; The elastic layer includes a first elastic part and a second elastic part, and the supporting layer includes a first support plate and a second support plate. The overlapping order from top to bottom is the first elastic part, the first support plate, the second elastic part and the second support plate. The first support plate is curved. The first support plate includes a front section, a middle section and a rear section. The middle section is correspondingly arranged at the midfoot part of the sole body. A groove structure is provided on the elastic layer. The groove structure and the first support plate together form a hollow structure. The second support plate is correspondingly arranged below the hollow structure.

2. The sole for improving thrust as claimed in claim 1, characterized in that: The groove structure is arranged on the second elastic part, and the groove structure and the first support plate together form a hollow structure of the midfoot part of the sole body.

3. The sole for improving thrust as claimed in claim 2, characterized in that: The second supporting plate is an arc-shaped thin sheet structure.

4. The sole for improving thrust as claimed in claim 1, characterized in that: The hollow structure is a bow-shaped hollow structure.

5. The sole for improving propulsion force according to claim 1, characterized in that: The hollow structure crosses the inner and outer sides of the sole body, so that the inner and outer sides of the sole body are connected to each other.

6. The sole for improving propulsion force according to claim 1, characterized in that: The front section is correspondingly arranged at the forefoot position of the sole body, and the rear section is correspondingly arranged at the heel position of the sole body. The front section and the middle section have different bending stiffnesses.

7. The sole for improving propulsion force according to claim 6, characterized in that: The rear section of the first support plate is a protruding angular structure, which is arranged close to the inner area of ​​the heel to prevent excessive eversion of the human foot when landing on the ground.

8. The sole for improving propulsion force according to claim 6, characterized in that: The thickness of the front section of the first support plate is smaller than the thickness of the middle section of the first support plate, so that the front section and the middle section have different bending stiffnesses.

9. The sole for improving propulsion force according to claim 5, characterized in that: The first support plate is formed by stacking and compounding multiple layers of fiber cloth. The front section, middle section and rear section of the first support plate include different numbers of fiber cloth layers and / or materials, so that the front section, middle section and rear section of the first support plate have different bending stiffness.

10. The sole for improving propulsion force according to claim 1, characterized in that: The bottom of the sole body is provided with an outsole, which is made of one, two or more of butadiene rubber, styrene butadiene rubber, natural rubber, butyl rubber, nitrile rubber, isoprene rubber, chloroprene rubber, thermoplastic polyurethane, cast polyurethane, mixed polyurethane, nylon elastomer and thermoplastic polyester elastomer.

11. The sole for improving propulsion force according to claim 1, characterized in that: The elastic layer is made of one, two or more of nylon elastomer, thermoplastic polyurethane, cast polyurethane, mixed polyurethane, thermoplastic polyester elastomer, ethylene-octene copolymer, ethylene-octene block copolymer, ethylene-vinyl acetate copolymer, styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer, high styrene rubber, brominated butyl rubber, butadiene rubber, silicone rubber, EPDM rubber, natural rubber and nitrile rubber.

12. The sole for improving propulsion force according to claim 1, characterized in that: The supporting layer is at least one of nylon, nylon elastomer, thermoplastic polyurethane, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and acrylonitrile-butadiene-styrene copolymer; or is a composite of at least one of carbon fiber, aramid fiber, glass fiber, and polyimide fiber and at least one of nylon, nylon elastomer, thermoplastic polyurethane, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and acrylonitrile-butadiene-styrene copolymer.

13. A shoe, characterized in that: A shoe sole for improving propulsion force comprising any one of claims 1 to 12.

Images