A sole and a shoe

Abstract

The application discloses a sole and a shoe. The midsole of the sole comprises a hollow elastic layer and a convex boosting component, wherein the boosting component is arranged below the hollow elastic layer and is 10%-50% of the total length of the midsole from the tip of the midsole. By arranging the boosting component at a position 10%-50% of the total length of the midsole from the tip of the midsole, the convex boosting component can be used as a fulcrum during movement, similar to the fulcrum of a lever, to play a prying role in rapid transition during movement, thereby providing support and boosting force during movement. Moreover, the hollow elastic layer is further arranged in the midsole, and the hollow elastic layer can provide further support and boosting force through the rebounding effect of the deformation of the hollow elastic layer during movement, so that the sole can solve the problems in the prior art.

Description

Technical Field

[0001] This application relates to the field of footwear technology, and more particularly to a sole and a shoe. Background Technology

[0002] During sports such as running and walking, the support and propulsion performance of shoe soles typically has a significant impact on the wearer's athletic performance, affecting aspects such as vertical jump height, starting speed, and agility. Therefore, improving shoe soles to enhance their support and propulsion performance, thereby improving the wearer's athletic performance, is a key focus of shoe improvement. Summary of the Invention

[0003] This application provides a shoe sole and a shoe to solve the problem that the poor support performance of shoe soles in the prior art affects the wearer's athletic performance.

[0004] This application provides a shoe sole, the midsole of which includes a hollow elastic layer and raised support components, wherein:

[0005] The assist component is located below the hollow elastic layer, and the distance between it and the tip of the midsole is 10% to 50% of the total length of the midsole.

[0006] Preferably, the height of the protrusion of the assisting component is 1mm to 5mm.

[0007] Preferably, the midsole further includes a proximal midsole and an elastic support layer; and,

[0008] The upper surface of the hollow elastic layer is provided with a groove, wherein the near-foot middle and bottom layer is embedded in the groove;

[0009] The elastic support layer is disposed between the near-foot bottom layer and the hollow elastic layer.

[0010] Preferably, the bottom of the hollow elastic layer is provided with a hollow structure.

[0011] Preferably, the elastic support layer is composed of a first support plate assembly, a second support plate assembly, and a third support plate assembly, wherein:

[0012] The first support plate assembly is disposed in the forefoot area of ​​the sole;

[0013] The third support plate assembly is disposed in the heel area of ​​the sole;

[0014] The second support plate assembly is disposed in the midfoot region between the forefoot region and the heel region; and,

[0015] The thickness of the support plate in the second support plate assembly is greater than the thickness of the support plate in the first support plate assembly, and less than the thickness of the support plate in the third support plate assembly.

[0016] Preferably, the thickness of the support plate in the first support plate assembly is greater than or equal to 0.7 mm and less than 1.1 mm;

[0017] The thickness of the support plate in the second support plate assembly is greater than or equal to 1.1 mm and less than 1.3 mm; and,

[0018] The thickness of the support plate in the third support plate assembly is greater than or equal to 1.3 mm and less than 2.0 mm.

[0019] Preferably, the length of the first support plate assembly in the elastic support layer accounts for 20-30% of its total length.

[0020] The second support plate assembly accounts for 40-50% of the length of the elastic support layer; and,

[0021] The third support plate assembly accounts for 20-40% of the length of the elastic support layer.

[0022] Preferably, the second support plate assembly includes two support plates, wherein:

[0023] The length of the support plate connected to the first support plate assembly 112a in the elastic support layer 112 accounts for 15% to 25%; and,

[0024] The length of the support plate connected to the third support plate assembly 112c in the elastic support layer 112 accounts for 15% to 35%.

[0025] Preferably, the connection between the first support plate assembly and the second support plate assembly includes an arc-shaped support structure, wherein the arc of the arc-shaped support structure is 0.45πrad to 0.85πrad.

[0026] This application also provides a shoe, wherein the sole of the shoe is specifically the sole provided in this application embodiment.

[0027] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0028] The shoe sole provided in this application embodiment includes a midsole comprising a hollow elastic layer and a raised assistive component. The assistive component is located below the hollow elastic layer, and its distance from the tip of the midsole is 10% to 50% of the total length of the midsole. By positioning the assistive component at a distance of 10% to 50% of the total midsole length from the tip, the raised assistive component can act as a fulcrum during movement, similar to a lever, providing support and propulsion for rapid transitions. Furthermore, since the midsole also includes a hollow elastic layer, the rebound effect after deformation of this layer during movement further provides support and propulsion. Therefore, this shoe sole solves the problems in the prior art. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a schematic diagram of the specific structure of the midsole of the shoe provided in an embodiment of this application;

[0031] Figure 2 This is a three-dimensional structural diagram of the shoe provided in an embodiment of this application;

[0032] Figure 3 A schematic diagram of the specific structure of the hollow elastic layer in the midfoot area of ​​the shoe provided in the embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the specific structure of the elastic support layer in the shoe provided in the embodiment of this application;

[0034] Figure 5 This is a schematic diagram showing the specific structure of another elastic support layer in the shoe provided in the embodiment of this application.

[0035] Figure 6 This is a schematic diagram of the forces acting on the shoes provided in the embodiments of this application;

[0036] Figure 7 The compression stress-strain curve and energy regression of the midfoot region of the shoe provided in the embodiments of this application;

[0037] Figure 8 Compressive stress-strain curves and energy regression of the midfoot region of the shoe provided as a comparative example in this application;

[0038] Figure 9 A schematic diagram showing the change in maximum strength of the big toe flexor muscle before and after a test, with the test subject wearing the shoes of this embodiment and the shoes of the comparative embodiment. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0041] As previously stated, improvements are needed to the sole to enhance its support performance and thus improve the wearer's athletic performance. Therefore, this application provides a sole that addresses the aforementioned technical problems.

[0042] Combination Figure 1 The schematic diagram of the shoe sole shows that the midsole 11 includes a hollow elastic layer 113 and a raised support component 114. The support component 114 is located below the hollow elastic layer 113 and at a distance from the tip of the midsole 11 (…). Figure 1 In this context, A) represents 10% to 50% of the total length of the midsole 11, where this total length typically extends from the tip A of the midsole 11 to the heel (…). Figure 1 The distance of B in the equation.

[0043] Typically, the raised assistive component 114 can be made of a rigid elastic material. By positioning the assistive component 114 at a distance of 10% to 50% of the total length of the midsole 11 from the tip, it can act as a fulcrum during movement, similar to a lever, providing support and propulsion for rapid transitions. Furthermore, since the midsole 11 also includes a hollow elastic layer 113, the rebound effect after deformation of the hollow elastic layer 113 during movement further provides support and propulsion. Therefore, this sole 1 solves the problems in the prior art.

[0044] On the midsole 11, the distance between the position of the assisting component 114 and the tip of the midsole 11 is 10% to 50% of the total length of the midsole 11. More specifically, the distance can be 15% to 35% of the total length of the midsole 11, such as 15%, 17%, 20%, 25%, 27%, 30%, 33%, 35%, or other values ​​between 15% and 35%. Because this 15% to 35% position is closer to the front of the metatarsophalangeal joint and the lower part of the second metatarsal bone of the big toe, it can further improve the efficiency during the forefoot push-off phase. In particular, the assisting component 114 can also be positioned directly below the front of the metatarsophalangeal joint to further improve the efficiency during the forefoot push-off phase.

[0045] Furthermore, the height of the protrusion of the assistive component 114 can range from 1mm to 5mm. If the step height is too large, such as greater than 5mm, the stability of the shoe may be affected. Conversely, if the step height is too small, such as less than 1mm, the support and propulsive force provided by the fulcrum may be insufficient. In practical applications, the specific height of the protrusion of the assistive component 114 is usually related to the size of the shoe and the elasticity of the material, and is generally set to 2mm.

[0046] For hollow elastic layer 113, it can also be... Figure 2 The structure, in Figure 2 The midsole 11 can be composed of three parts: a proximal midsole layer 111, a hollow elastic layer 113, and an elastic support layer 112. The upper surface (near the foot) of the hollow elastic layer 113 has a groove, allowing the proximal midsole layer 111 and the elastic support layer 112 to be embedded within the groove, with the elastic support layer 112 positioned between the proximal midsole layer 111 and the hollow elastic layer 113. This groove on the upper surface of the hollow elastic layer 113 further enhances the elastic support layer 112 and the proximal midsole layer 111, thereby providing additional assistance during movement. Furthermore, the hollow elastic layer 113 can be provided with a hollow structure 1131 at its bottom to provide rebound assistance. The hollow structure 1131 can be located in the midfoot area, the heel area, or other locations as needed.

[0047] Of course, the structure of the hollow elastic layer 113 can also be as follows: Figure 3 As shown, the upper surface, lower surface, and sides of the hollow elastic layer 113 are an integrated structure, and the hollow elastic layer 113 includes one or more sealed cavities. During movement, the sole bends and deforms, thereby using the rebound effect after deformation to provide assistance.

[0048] like Figure 2 As shown, in practical applications, an outsole 12 can usually be set at the bottom of the midsole 11 to increase the wear resistance and anti-slip properties of the sole. The outsole 12 can usually be composed of a forefoot outsole 12a, an inner rear outsole 12b, and an outer rear outsole 12c. The inner rear outsole 12b is mainly made of wear-resistant and anti-slip material, thus playing a major role in wear resistance and anti-slip. The outer rear outsole 12c is mainly made of a material with a balance of wear resistance and anti-slip performance, thus providing corresponding functions. The material of the forefoot outsole 12a can be a wear-resistant and anti-slip material, or a wear-resistant lightweight material, etc.

[0049] For example, the outsole of model 12a has the following material formulation: the main matrix is ​​composed of 50 parts solution-polymerized styrene-butadiene rubber, 30 parts natural rubber, and 20 parts nitrile rubber, with an Akron abrasion resistance of 0.18 cm. 3 DIN 103mm 3 Dry anti-slip 1.08, wet anti-slip 0.62.

[0050] The inner rear outsole is 12b, made of cast polyurethane with Akron abrasion resistance of 0.05cm. 3 DIN29.5mm 3 Dry anti-slip 1.12, wet anti-slip 0.78.

[0051] The outer rear outsole (12c) has the following material formulation: the main matrix is ​​50 parts butadiene rubber, 20 parts solution-polymerized styrene-butadiene rubber, 20 parts natural rubber, and 10 parts brominated butyl rubber. Its performance is Akron abrasion resistance of 0.12cm. 3 DIN 74mm 3 Dry anti-slip 0.98, wet anti-slip 0.47.

[0052] For the near-foot mid-layer 111 and the hollow elastic layer 113, elastic materials can typically be used, such as foam materials with good resilience and shock absorption. Specifically, the materials that can be used include: a main matrix formulation of 55-65 parts EVA (e.g., 60 parts), 25-35 parts SEBS (e.g., 30 parts), and 5-15 parts OBC (e.g., 10 parts). The tested properties of this foam material are as follows: Shore C hardness 40, energy return 67%, peak G (20mm) 7.87, and density 0.22 g / cm³. 3 Alternatively, it can be prepared using nylon elastomer material (Peba), which has the advantage of a density of 0.13 g / cm³. 3 With a Shore C hardness of 42, a rebound performance of 80%, and a shock absorption (PeakG, 20mm) of 9.82, this material can provide a lighter and more responsive sole.

[0053] Regarding the elastic support layer 112 provided in the embodiments of this application, such as Figure 4 As shown, the elastic support layer 112 is composed of a first support plate assembly 112a, a second support plate assembly 112b and a third support plate assembly 112c, wherein each support plate assembly has at least one support plate.

[0054] For example, the first support plate assembly 112a may consist of one support plate, two support plates, or other numbers of support plates. Similarly, the second support plate assembly 112b and the third support plate assembly 112c may each consist of one support plate, two support plates, or other numbers of support plates.

[0055] The first support plate assembly 112a is located in the forefoot area of ​​the sole, the third support plate assembly 112c is located in the heel area of ​​the sole, and the second support plate assembly 112b is located in the midfoot area between the forefoot area and the heel area.

[0056] The thickness of the support plate in each support plate assembly can be greater closer to the heel area (but not less than the thickness of the support plate further away from the heel area). For example, the thickness of the support plate in the second support plate assembly 112b is greater than the thickness of the support plate in the first support plate assembly 112a, and less than the thickness of the support plate in the third support plate assembly 112c.

[0057] For example, the thickness of the support plate in the first support plate assembly 112a is greater than or equal to 0.7 mm and less than 1.1 mm, such as 0.9 mm; the thickness of the support plate in the second support plate assembly 112b is greater than or equal to 1.1 mm and less than 1.3 mm, such as 1.2 mm; and the thickness of the support plate in the third support plate assembly 112c is greater than or equal to 1.3 mm and less than 1.5 mm, such as 1.4 mm.

[0058] Meanwhile, within a certain support plate assembly, the thickness of each support plate can be the same or different, but the thickness of the support plate closer to the heel area is not less than the thickness of the support plate farther away from the heel area. For example, the second support plate assembly 112b includes 3 support plates, of which the thickness of the support plate closest to the heel area is 1.25mm, the thickness of the support plate farthest from the heel area is 1.15mm, and the thickness of the middle support plate is 1.20mm.

[0059] The elastic support layer 112 can be positioned on the upper surface of the midsole 11 (near the foot), on the lower surface of the midsole 11 (near the ground), or embedded inside the midsole 11 to prevent it from slipping off.

[0060] Since the thickness of the support plate in the second support plate assembly 112b is greater than the thickness of the support plate in the first support plate assembly 112a, and less than the thickness of the support plate in the third support plate assembly 112c, this allows the heel area to provide greater support to prevent heel eversion, while providing propulsion and stability to the midfoot area during movement, thus solving the problems in the prior art.

[0061] Of course, since the elastic support layer 112 can provide propulsion during the forefoot push-off phase, its stiffness, such as Shore D stiffness, can be 25–80D, for example, 25D, 30D, 45D, 60D, 65D, 80D, or other values ​​between 25D and 80D. Considering comfort during exercise, the stiffness of the elastic support layer 112 can be selected as 45–65D, for example, 50D. Therefore, in practical applications, considering the characteristics of different materials, carbon plate support inserts can be used as support plates in the first support plate assembly 112a, the second support plate assembly 112b, and the third support plate assembly 112c. Of course, other types of rigid plates can also be used as support plates, such as at least one of nylon, nylon elastomer, thermoplastic polyurethane, thermoplastic polyester elastomer, epoxy resin, phenolic resin, polycarbonate, polyetheretherketone, polyetherketoneketone, and ABS (acrylonitrile-butadiene-styrene copolymer); or a support plate made of at least one of carbon fiber, aramid fiber, glass fiber, polyimide fiber, and polyester fiber blended with at least one of the above resins or elastomers.

[0062] Specifically, the first support plate assembly 112a, the second support plate assembly 112b, and the third support plate assembly 112c need to have different bending stiffnesses. The first support plate assembly 112a needs to provide moderate bending stiffness (relative to the second support plate assembly 112b and the third support plate assembly 112c). The second support plate assembly 112b needs to provide a high elastic modulus, low energy loss, and sufficient support, while ensuring the stability and efficiency of the transition. In conjunction with the midfoot energy storage-release structure, it can provide the potential energy storage and release function that simulates the arch of the foot, thereby ensuring both a light and efficient rebound feel and providing the wearer with additional forward propulsion. The third support plate assembly 112c needs to have high rigidity to effectively prevent excessive pronation of the foot after landing. Therefore, the support plates in the first support plate assembly 112a, the second support plate assembly 112b, and the third support plate assembly 112c can all be made of carbon plate support inserts. These carbon plate support inserts can include multiple layers of stacked carbon fiber composite fabric, thereby providing strong support and a stable transition for the feet.

[0063] The thickness of the carbon fiber composite fabric can be 0.10 to 0.15 mm. The resin type in the carbon fiber composite fabric can be one or more of epoxy resin (EP), thermoplastic polyurethane (TPU), polycarbonate (PC), nylon (PA), polyether ether ketone (PEEK), and polyether ketone ketone (PEKK). The mass fraction of the resin can be 33% to 42%.

[0064] Furthermore, the carbon fiber composite fabric used for stacking and laying carbon fiber plate support inserts can independently select any one of T300, T400, T600, T700, T800, T1000, and T1200 carbon fiber types. The carbon fiber mass fraction in the carbon fiber composite fabric can be 58% to 67%, for example, 58%, 60%, 63%, 67%, etc. The layup angle of each layer of carbon fiber composite fabric can be set according to specific requirements, such as -120 degrees, -90 degrees, -60 degrees, -45 degrees, -30 degrees, 0 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, etc. Specifically, the layup angle of the carbon fiber composite fabric is the angle between the warp or weft yarns of the carbon fiber composite fabric and the direction from the heel to the forefoot.

[0065] For example, the carbon fiber support insert in the first support plate assembly 112a has a total thickness of 1.0 mm and can be made of 6 layers of carbon fiber composite fabric. The first layer is 3K carbon fiber twill, the second layer is carbon fiber unidirectional tape with a layup angle of 45 degrees, the third layer is glass fiber unidirectional tape with a layup angle of 60 degrees, the fourth layer is glass fiber unidirectional tape with a layup angle of -60 degrees, the fifth layer is carbon fiber unidirectional tape with a layup angle of -45 degrees, and the sixth layer is 3K carbon fiber twill.

[0066] For the carbon fiber support insert in the third support plate assembly 112c, since it needs to provide stability when the heel lands, its thickness can be 1.4mm, and its position can be specifically set in the inner area of ​​the heel, so as to effectively prevent excessive pronation of the foot. It can be made of 10 layers of carbon fiber composite fabric, wherein the first layer is 3K carbon fiber twill, the second layer is 3K carbon fiber unidirectional tape, the third layer is 3K carbon fiber unidirectional tape, the fourth layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, the fifth layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, the sixth layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, the seventh layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, the eighth layer is 3K carbon fiber twill, the ninth layer is 3K carbon fiber twill, and the tenth layer is 3K carbon fiber twill.

[0067] like Figure 4 As shown, since the area where the second support plate assembly 112b is located is the midfoot region, and the human foot typically has a certain curvature in this region, at least two carbon plate support inserts can be provided in the second support plate assembly 112b to adapt to this change and thus provide propulsion and stability, thereby providing better bending performance. Here, we take... Figure 5 The second support plate assembly 112b shown is an example of two carbon plates, 112b1 and 112b2, supporting inserts.

[0068] At the connection between carbon plate support insert 112b1 and carbon plate support insert 112b2, the curvature of the human foot changes significantly. Therefore, carbon plate support insert 112b1 can be made of 8 layers of carbon fiber composite fabric. The first layer is 3K carbon fiber twill, the second layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, the third layer is carbon fiber unidirectional tape with a layup angle of 60 degrees, the fourth layer is glass fiber unidirectional tape with a layup angle of 90 degrees, the fifth layer is glass fiber unidirectional tape with a layup angle of 90 degrees, the sixth layer is carbon fiber unidirectional tape with a layup angle of -60 degrees, the seventh layer is carbon fiber unidirectional tape with a layup angle of 90 degrees, and the eighth layer is 3K carbon fiber twill.

[0069] The carbon fiber plate support insert 112b2 can also be made of 8 layers of carbon fiber composite fabric, but the laying method is different from that of the carbon fiber plate support insert 112b1. The carbon fiber composite fabric in the carbon fiber plate support insert 112b1 can be laid as follows: the first layer is 3K carbon fiber twill, the second layer is carbon fiber unidirectional tape with a layup angle of 60 degrees, the third layer is glass fiber unidirectional tape with a layup angle of -60 degrees, the fourth layer is glass fiber unidirectional tape with a layup angle of 120 degrees, the fifth layer is glass fiber unidirectional tape with a layup angle of -120 degrees, the sixth layer is glass fiber unidirectional tape with a layup angle of 60 degrees, the seventh layer is carbon fiber unidirectional tape with a layup angle of -60 degrees, and the eighth layer is 3K carbon fiber twill.

[0070] It should be noted that the length proportions of the first support plate assembly 112a, the second support plate assembly 112b, and the third support plate assembly constituting the elastic support layer 112 can be as follows:

[0071] The length of the first support plate assembly 112a in the elastic support layer 112 accounts for 20-30%, such as 20%, 25%, 30%, etc., specifically 28%. The length of the second support plate assembly 112b in the elastic support layer 112 accounts for 40-50%, such as 40%, 45%, 50%, etc., specifically 48%. The length of the third support plate assembly 112c in the elastic support layer 112 accounts for 20-40%, such as 20%, 25%, 30%, etc., specifically 24%.

[0072] Additionally, when the second support plate assembly 112b includes two support plates, wherein:

[0073] The proportion of the length of the support plate connected to the first support plate assembly 112a in the elastic support layer 112 can be 15% to 25%, such as 15%, 20%, 30%, etc.; and the proportion of the length of the support plate connected to the third support plate assembly 112c in the elastic support layer 112 can be 15% to 35%, such as 15%, 20%, 25%, 28%, 30%, 35%, etc.

[0074] Further integration Figure 5 As shown, the elastic support layer 112 may also include an arc-shaped support structure 1121 that curves towards the lower surface of the midsole 11. The arc-shaped support structure 1121 may be located at the connection between the first support plate assembly 112a and the second support plate assembly 112b, or more specifically, at a distance from the tip of the midsole 11 of 15% to 35% of the total length of the midsole 11, such as 15%, 17%, 20%, 25%, 27%, 30%, 33%, 35%, or other values ​​between 15% and 35%. Since this 15% to 35% position is closer to the front of the metatarsophalangeal joint and the lower part of the second metatarsal bone of the big toe, it can better improve the efficiency of the forefoot push-off phase.

[0075] Specifically, when the assistive component 114 is positioned directly below the front of the metatarsophalangeal joint, the arc-shaped support structure 1121 can be positioned directly above the assistive component 114, thereby further improving the efficiency during the forefoot push-off phase. Furthermore, to balance shoe stability and improved forefoot push-off efficiency, the curvature of the arc-shaped support structure 1121 is typically between 0.45πrad and 0.85πrad, such as 0.45πrad, 0.5πrad, 0.6πrad, 0.65πrad, 0.75πrad, 0.8πrad, 0.85πrad, or other values ​​between 0.45πrad and 0.85πrad.

[0076] Because the protruding assistive component 114 in this application, combined with the elastic support layer 112, further provides a fulcrum during movement, it enhances the leverage and rolling efficiency between the forefoot and mid / hindfoot during push-off, thereby saving the runner's energy. Simultaneously, the arc-shaped support structure 1121 in the elastic support layer 112 makes it resemble a spoon-shaped support plate, further ensuring stability and durability.

[0077] Of course, in order to provide this fulcrum during movement, it can also be combined with Figure 6 This can be achieved using a stepped drop structure 115, for example, by placing the drop structure 115 below the first support plate assembly 112a. By providing this fulcrum, it can also facilitate a rapid transition during movement. On the midsole 11, the drop structure 115 can also be positioned such that the distance from the tip of the midsole 11 is 10% to 50% of the total length of the midsole 11.

[0078] In particular, when the midsole 11 is composed of three parts: a near-foot midsole 111, a hollow elastic layer 113, and an elastic support layer 112, the midsole 111 and the elastic support layer 112 are embedded in the grooves on the upper surface of the hollow elastic layer 113. During exercise, this is similar to providing a midfoot energy storage-release assist system (groove structure + hollow elastic layer 113 recovers energy - elastic support layer 112 releases energy): combining the highly elastic hollow elastic layer 113 with the elastic support layer 112 activates a linked force feedback mechanism for the overall running process. This recovers the energy of each step the wearer takes, providing a potential energy storage function that simulates the arch of the foot, and releases it again when pushing off the ground. This ensures a light and efficient rebound feel, while also providing the wearer with additional power (forward thrust). This hollow support plate structure in the midfoot provides greater deformation space during the support phase, which can effectively increase shock absorption performance and energy storage-release function, providing the wearer with better cushioning protection and thrust.

[0079] To facilitate a further understanding of the technical effects of the shoes and soles provided in this application, the following explanation is based on test data, including whole-shoe performance tests and biomechanical whole-shoe tests.

[0080] Overall shoe performance test

[0081] 1. Compression stress-strain test in the midfoot area

[0082] Figure 7 and Figure 8 The figures are compression stress-strain curves of the midfoot region in the embodiment and the comparative example, respectively. The midsole of the shoe in the embodiment includes a hollow elastic layer and a raised support component. The support component 114 is located below the hollow elastic layer 113 and is 35% of the total length of the midsole 11 at a distance from the tip of the midsole 11. The height of the raised support component is 2 mm. The other parts of the shoe in the embodiment are the same as those in the comparative example.

[0083] The test conditions were: a loading force of 1500N for all tests; the areas enclosed by the loading and unloading curves and the horizontal axis represent the energy applied to the sole and the energy returned, respectively. Figure 7 and Figure 8 It is evident that, under the same applied force, the energy return and feedback in the midfoot region of the embodiment are both higher than those of the comparative shoe. The energy return of the embodiment is 74%, and the feedback energy is 6.79J, while that of the comparative shoe is 69%, and the feedback energy is 4.496J. In other words, for each deformation of the midfoot region, the shoe of this embodiment can provide 2.294J more energy feedback than the shoe of the comparative shoe, which is 51% higher than the comparative shoe. This also proves that the midfoot energy storage-release assist system of the shoe of this embodiment can provide more significant energy feedback.

[0084] 2. Biomechanical whole shoe test

[0085] The same shoes as those used in the above embodiments and comparative examples were continued. The spatiotemporal parameters of the right foot were tested on a treadmill at the same speed using the shoes of the comparative example and the embodiment.

[0086] Ground contact time = buffer time + push-off time

[0087] Ground contact time: The total time from heel landing to toe pushing off the ground.

[0088] Buffer time: The time it takes for the horizontal force on the three-dimensional force measuring table to decrease from its initial value to zero.

[0089] Extension time: The time it takes for the horizontal force on the three-dimensional force measuring platform to go from zero to the force disappearing.

[0090] The results in Table 1 show that the shoe in Example 1 reduces ground contact time by 4.55%, with almost all of this improvement coming from a 5.77% reduction in push-off time. This further demonstrates that the shoe in this example can effectively improve push-off efficiency and shorten the push-off duration. In contrast, the cushioning time in this example is 1.22% longer than that in the comparative example, indicating a lower force loading rate and reduced knee joint injury.

[0091] Table 1: Comparison of Test Results

[0092] shoe Push-off time (s) Time to ground (s) Buffer time (s) Example 0.0976 0.2125 0.1159 Comparative Example 0.1036 0.2174 0.1151 Improvement rate 5.77％ 4.55％ -1.22％

[0093] Muscle strength test results show that, compared with the comparative shoes, the shoes in this embodiment, when worn for a 20-kilometer long-distance run, exhibited changes in the maximum strength of the big toe flexor muscle before and after the test. Figure 9 As shown, after completing a long-distance run wearing the shoes of this embodiment, the test subjects experienced a decrease of only 4% in toe flexor strength, compared to a 16% decrease in the shoes of the comparison embodiment. Therefore, it is evident that the shoes of this embodiment can effectively reduce muscle fatigue and better maintain the runner's athletic performance.

[0094] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0095] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A shoe sole, characterized in that, The midsole (11) of the shoe sole includes a hollow elastic layer (113) and a raised support component (114), wherein: The assisting component (114) is located below the hollow elastic layer (113) and the distance between it and the tip of the midsole (11) is 15% to 35% of the total length of the midsole (11). The protrusion of the assisting component (114) is a step, and the height of the protrusion of the assisting component (114) is 1mm to 5mm. The protruding assisting component (114) can be used as a fulcrum to play a levering role in quick transition during exercise, so as to reduce the decrease in the strength of the toe flexor muscles after long-distance running and save the runner's energy.

2. The sole as described in claim 1, characterized in that, The midsole (11) also includes a proximal midsole (111) and an elastic support layer (112); and, The upper surface of the hollow elastic layer (113) is provided with a groove, wherein the near-foot middle bottom layer (111) is embedded in the groove; The elastic support layer (112) is disposed between the near-foot mid-bottom layer (111) and the hollow elastic layer (113).

3. The sole as described in claim 2, characterized in that, The bottom of the hollow elastic layer (113) is provided with a hollow structure (1131).

4. The sole as described in claim 2, characterized in that, The elastic support layer (112) is composed of a first support plate assembly (112a), a second support plate assembly (112b), and a third support plate assembly (112c), wherein: The first support plate assembly (112a) is disposed in the forefoot region of the sole; The third support plate assembly (112c) is disposed in the heel area of ​​the sole; The second support plate assembly (112b) is disposed in the midfoot region between the forefoot region and the heel region; and, The thickness of the support plate in the second support plate assembly (112b) is greater than the thickness of the support plate in the first support plate assembly (112a) and less than the thickness of the support plate in the third support plate assembly (112c).

5. The sole as described in claim 4, characterized in that, The thickness of the support plate in the first support plate assembly (112a) is greater than or equal to 0.7 mm and less than 1.1 mm; The thickness of the support plate in the second support plate assembly (112b) is greater than or equal to 1.1 mm and less than 1.3 mm; and, The thickness of the support plate in the third support plate assembly (112c) is greater than or equal to 1.3 mm and less than 2.0 mm.

6. The sole as described in claim 5, characterized in that, The first support plate assembly (112a) accounts for 20-30% of the length of the elastic support layer (112); The second support plate assembly (112b) accounts for 40-50% of the length of the elastic support layer (112); and, The third support plate assembly (112c) accounts for 20-40% of the length of the elastic support layer (112).

7. The sole as described in claim 6, characterized in that, The second support plate assembly (112b) includes two support plates, wherein: The support plate connected to the first support plate assembly (112a) accounts for 15% to 25% of the length of the elastic support layer (112); and, The length of the support plate connected to the third support plate assembly (112c) in the elastic support layer (112) accounts for 15% to 35%.

8. The sole as described in claim 4, characterized in that, The connection between the first support plate assembly (112a) and the second support plate assembly (112b) includes an arc-shaped support structure, wherein the arc of the arc-shaped support structure is 0.45πrad to 0.85πrad.

9. A type of shoe, characterized in that, The sole of the shoe is specifically the sole as described in any one of claims 1 to 8.

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