Shoe insole and shoe

Abstract

The shoe insole comprises an insole body integrally made of supercritical foaming materials, the insole body is divided into four position areas in the extending direction from the heel to the forefoot along the foot sole, and each position area is further divided into an outer side area block and an inner side area block in the extending direction perpendicular to the foot sole. Eight blocks are formed in total; the insole body is provided with four functional areas according to the motion characteristics of a foot sole, and the four functional areas comprise a cushioning area, a springback area, a balancing area and a supporting area; the cushioning areas are at least located on the outer side portion of the heel and the outer side portion of the middle foot so as to absorb impact force generated when the heel touches the ground. The springback area is at least located on the inner side portion of the toe and the inner side portion of the half sole so as to provide energy feedback when the foot sole is pedaled and stretched to generate force; the balancing area is connected with the cushioning area and the springback area and is at least located in one of the four position areas so as to ensure the connection of the whole process from the heel landing to the half sole off the ground, and smooth transition is kept; the support region is located in at least one of the four location regions to maintain the stability of the lower limb during the process of contacting the ground. According to the shoe insole and the shoe provided by the invention, the shoe insole is subjected to regional layout design according to the sports biomechanics principle, so that the reasonable distribution of hardness / density, cushioning property, elasticity and supporting property of the shoe insole under different stress points, action modes and sports requirements is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of footwear, in particular to a shoe midsole and a shoe. Background Art

[0002] Sports shoes are designed to meet the natural movement form, force characteristics and functional requirements of the human body during exercise, including walking, running, quick start, emergency stop, lateral movement and jumping. The human foot has a complex structure, consisting of 26 bones, muscles, fascia, tendons, etc., which provide stable support, adapt to the ground, cushioning and natural functions of pushing and stretching for exercise. However, the functional requirements of shoes in the early, middle and stretching stages of different sports movements are different, especially high requirements for the midsole of shoes. Taking running and walking as examples, the heel cushioning, heel and forefoot stability, forefoot propulsion / stretching, and conformity to natural movement patterns. The design of the midsole of traditional sports shoes has limitations. It usually uses a single material or uniform density, which cannot fully adapt to the differences in the pressure distribution of the sole and the requirements of the force and force area, resulting in poor performance in the impact area, the foot flip control area and the push and stretch force area, affecting sports performance, stability and comfort. Currently on the market, there are sports shoes that use regional adjustment technology of the hardness and elasticity of the midsole material to provide comfort and support. However, these technologies often only focus on the design of local functional areas, lacking consideration of the overall layout of all areas, resulting in unnatural movement patterns and affecting the overall movement experience. In addition, the zoning design in existing technologies is mostly a rough hardness adjustment, and fails to finely design the physical properties of each functional area according to the principles of sports biomechanics, and fails to fully meet the needs of support, shock absorption, and stretching at all stages of gait. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a shoe midsole and a shoe, which realizes a reasonable distribution of hardness / density, shock absorption, elasticity and support under different stress points, action modes and sports requirements of the shoe midsole by performing a refined regional layout design on the shoe midsole according to the principles of sports biomechanics.

[0004] To achieve the above objectives, various embodiments of the present invention adopt the following technical solutions but are not limited to the following solutions:

[0005] The first technical scheme relates to a shoe midsole, comprising a midsole body made of an integrated supercritical foaming material, wherein the midsole body is divided into at least three position areas along the extension direction from the heel to the forefoot, including the forefoot area, the midfoot area and the heel area; each position area is further subdivided into at least two blocks, the outer side and the inner side, along the extension direction perpendicular to the sole, to form at least six blocks, including the outer side of the toes, the inner side of the toes, the outer side of the forefoot, the inner side of the forefoot, the outer side of the midfoot, the inner side of the midfoot, the outer side of the heel and the inner side of the heel; the midsole body is divided into at least three positions along the extension direction from the heel to the forefoot, including the forefoot area, the midfoot area and the inner side of the heel; the midsole body is divided into at least three positions along the extension direction from the heel to the forefoot, including the outer side of the toes, the inner side of the toes, the outer side of the forefoot, the inner side of the forefoot, the outer side of the midfoot, the inner side of the midfoot, the outer side of the heel and the inner side of the heel; the midsole body is divided into at least three positions along the extension direction from the heel to the forefoot, including the outer side of the toes, the inner side of the toes, the outer side of the fore ... The dynamic feature is provided with four functional areas, including a cushioning area, a rebound area, a balancing area and a support area; the cushioning area is located at least at the lateral part of the heel and the lateral part of the midfoot to absorb the impact force when the heel touches the ground; the rebound area is located at least at the medial part of the forefoot to provide energy feedback when the sole of the foot pushes and extends; the balancing area connects the cushioning area and the rebound area, and is located at least in one of the four position areas to ensure the connection of the entire process from heel landing to forefoot leaving the ground; the support area is located in at least one block of the four position areas to maintain stability in the process of contacting the ground.

[0006] The second technical solution is based on the first technical solution, wherein there are four position areas, and the midsole body also includes a toe area, which is located at the toe position of the forefoot area along the extension direction of the sole, and the toe area is further subdivided into two blocks, the outer side and the inner side, along the direction perpendicular to the extension direction of the sole, including the outer side of the toe and the inner side of the toe.

[0007] The third technical solution is based on the second technical solution, wherein the same block may include two different functional areas.

[0008] The fourth technical solution is based on the third technical solution, wherein the supercritical foaming material is a mixed material consisting of EVA, TPU and POE.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the midsole body is provided with a frame surrounding it along the circumferential direction, and the frame is fixedly connected to the eight blocks.

[0010] The sixth technical solution is based on the fifth technical solution, wherein the midsole body is provided with a plurality of grooves at the connection between the eight blocks, and the plurality of grooves extend along the sole extension direction and perpendicular to the sole extension direction, and the depth of the grooves is greater than or equal to 1 mm.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the eight blocks of the midsole body are an integrally formed structure, or are detachably connected.

[0012] The eighth technical solution is based on the fourth technical solution, wherein, among the four functional areas, the material density of the shock absorbing area is the smallest, the material density of the support area is the largest, and the material density of the rebound area and the balance area is between the shock absorbing area and the support area.

[0013] The ninth technical solution is based on the fourth technical solution, wherein, among the four functional areas, the material hardness of the shock absorbing area is the smallest, the material hardness of the support area is the largest, and the material hardness of the rebound area and the balance area is between the shock absorbing area and the support area.

[0014] The tenth technical solution is based on the fourth technical solution, wherein, among the four functional areas, the material rebound of the shock absorbing area is the smallest, the material rebound of the rebound area is the largest, and the material rebound of the support area and the balance area is between the shock absorbing area and the rebound area.

[0015] The eleventh technical solution is based on any one of the first to tenth technical solutions, wherein a shoe comprises a sole, an upper and the above-mentioned midsole, wherein the midsole is fixedly connected to the sole, and the upper is fixedly connected to the frame.

[0016] From the above description of the various embodiments of the present invention, it can be seen that, compared with the prior art, the various embodiments of the present invention have the following advantages:

[0017] Beneficial effects:

[0018] In the first technical solution and related embodiments, the midsole body is optimized in structure and function, and the manufacturing efficiency of the shoe production process is improved through the integrated production of supercritical foaming materials. The midsole body is divided into at least six blocks and four functional areas according to the sole position and movement characteristics, namely, the cushioning area, the rebound area, the balance area and the support area, to meet the functional requirements of the shoe during exercise, including but not limited to cushioning, stability, support, rebound, energy feedback, etc. Specifically, the cushioning area is at least located on the lateral side of the heel and the lateral side of the midfoot, which can effectively absorb the impact force when the heel lands, protect the wearer's feet from injury, and at the same time take into account the center of gravity transfer characteristics of the human body after landing and cushioning, ensuring a smooth transition when the movement posture is changed. The rebound area is at least located on the inner side of the forefoot, which can quickly restore the shape of the material when the sole exerts force, ensuring that the user's gait or action ground-pushing stage can respond quickly and provide strong energy feedback, helping the user to reduce muscle fatigue and improve the fluency and efficiency of movement. The balance area connects the cushioning area and the rebound area to ensure smooth connection from heel landing to forefoot leaving the ground, enhance the overall performance of the midsole, promote smooth transition between functional areas, reduce the abrupt feeling when running, and bring users a more harmonious and natural sports experience. The support area maintains stability during the contact with the ground to prevent the heel from turning too much or too fast.

[0019] In the second technical solution and related embodiments, the position from the heel to the forefoot can be divided into more position areas according to different movement characteristics, three to eight position areas or more than eight position areas, so as to achieve the best natural movement state effect. In this embodiment, the number of position areas is four, including the toe area.

[0020] In the third technical solution and related embodiments, two different functional areas are allowed to be included in the same block, and the optimal setting can be made for a specific area according to specific needs.

[0021] In the fourth technical solution and related embodiments, the supercritical foaming material adopts a mixed ratio of EVA, TPU and POE. EVA (ethylene-vinyl acetate copolymer) is light, soft and has excellent cushioning performance, which can effectively absorb and disperse impact force, providing the wearer with a comfortable wearing experience. TPU (thermoplastic polyurethane) can provide stable support when the sole of the foot exerts force with its good support and energy feedback capabilities, and effectively feed back energy to the wearer to enhance athletic performance. POE (polyolefin elastomer) further improves the durability and response speed of the midsole due to its light weight and high elasticity. The optimal implementation plan is to adjust the density of different areas of the midsole by adjusting the proportion of these materials, so as to meet key indicators such as energy return rate, deformation and shock absorption G value under different sports needs, so that it can adapt to a variety of sports scenes, such as running, tennis, golf and basketball, etc., to provide the wearer with a better sports experience.

[0022] In the fifth technical solution and related embodiments, a frame is added to the side wall of the midsole to improve the stability of the midsole. The frame can flexibly adjust its thickness, rigidity and size in the forefoot, midfoot and heel according to the functional requirements of different sports shoes to meet the stability and safety requirements in different sports scenes. At the same time, the frame provides a fixed connection point for the connection between the upper and the midsole.

[0023] In the sixth technical solution and related embodiments, the grooves provide moderate twisting and bending space between different blocks, so that the shoe can better respond to the movement needs of the foot, allowing the foot to flexibly twist in the shoe according to the user's natural movements, thereby maintaining optimal adaptability in different ground, runway speeds, landing postures and other movement modes.

[0024] In the seventh technical solution and related embodiments, two midsole body construction forms are provided. The one-piece molding structure is combined with advanced foaming molding or injection molding technology to ensure the close integration and seamless connection between the materials of each block of the midsole, thereby ensuring the integrity and durability of the shoe; and the detachable connection structure facilitates the replacement or adjustment of the blocks, thereby improving the flexibility of the shoe and the possibility of personalized customization.

[0025] In the eighth technical solution and related embodiments, the material density of the shock-absorbing area is the smallest, which can effectively absorb impact and protect the foot; the material density of the support area is the largest, providing stable support; the material density of the rebound area and the balance area is between the two, which not only ensures sufficient elasticity but also achieves a smooth transition.

[0026] In the ninth technical solution and related embodiments, the material hardness of the four functional areas is adjusted to further enhance the performance differences of the functional areas, so that the shoes provide comfort and stability while maintaining good motion responsiveness.

[0027] In the tenth technical solution and related embodiments, by adjusting the material rebound performance, the shoe can provide sufficient energy feedback when the sole of the foot is pushed and stretched while providing shock absorption and support, thereby improving exercise efficiency.

[0028] In the eleventh technical solution and related embodiments, the midsole adopts a multi-density / hardness, multi-block layout technical solution, which can be scientifically designed with full functions according to different sports characteristics, and fully meet various functional requirements during sports, including but not limited to shock absorption, stability, support, rebound, and energy feedback. Sports shoes made according to the above midsole provide the wearer with a smooth transition feeling and a natural sports state experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 Schematic diagram of the midsole structure of a shoe in an embodiment;

[0031] Figure 2 This is a schematic diagram of the decomposition of the midsole of a shoe in an embodiment;

[0032] Figure 3 This is a schematic diagram of the distribution of functional areas and location blocks in Example 1;

[0033] Figure 4 This is a schematic diagram of the area design and functional areas of Example 1;

[0034] Figure 5 This is a schematic diagram of the distribution of functional areas and location blocks in Example 2;

[0035] Figure 6 This is a schematic diagram of the area design and its functional areas in Example 2;

[0036] Figure 7 This is a schematic diagram of the distribution of functional areas and location blocks in Example 3;

[0037] Figure 8 This is a schematic diagram of the area design and functional areas of Example 2.

[0038] Description of main reference numerals:

[0039] Lateral portion of the heel 1; medial portion of the heel 2; lateral portion of the midfoot 3; medial portion of the midfoot 4; lateral portion of the forefoot 5; medial portion of the forefoot 6; lateral portion of the toe 7; medial portion of the toe 8; frame 9; groove 10; shock-absorbing area 11; balancing area 12; support area 13; rebound area 14. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0042] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0043] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0044] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0045] See also Figures 1 to 8 ,like Figure 1 As shown, a shoe midsole includes a midsole body made of a supercritical foaming material. Specifically, the supercritical foaming material is a mixed material composed of EVA, TPU and POE.

[0046] The supercritical foaming material adopts a mixed ratio of EVA, TPU and POE. EVA (ethylene-vinyl acetate copolymer) is light, soft and has excellent cushioning performance. It can effectively absorb and disperse impact force, providing the wearer with a comfortable wearing experience. TPU (thermoplastic polyurethane) can provide stable support when the sole of the foot exerts force with its good support and energy feedback capabilities, and effectively feed back energy to the wearer to enhance athletic performance. POE (polyolefin elastomer) further improves the durability and response speed of the midsole due to its light weight and high elasticity. By adjusting the proportions of these materials, the density of different areas of the midsole can be adjusted to meet key indicators such as energy return rate, deformation and shock absorption G value under different sports needs, so that it can adapt to a variety of sports scenarios, such as running, tennis, golf and basketball, etc., to provide the wearer with a better sports experience.

[0047] Specifically, any EVA with a VA content greater than 18% may be used, and preferred varieties include EVA33121, EVA7470, EVA265, EVA7360, and EVA28005.

[0048] The preferred POE varieties include POE8003, 8180, 8150, 640, 810, 740, 170, 180, 565, OBC9107, 9000, 9100, and 9530.

[0049] The preferred varieties of TPU are 1170A, 1175A and 1180A.

[0050] In this embodiment, the mixed material composed of EVA, TPU and POE includes, by weight, 40-50 parts of EVA, 10-30 parts of TPU, and 10-30 parts of POE.

[0051] There are two alternative options for materials: a combination of EVA and Phylon (MD) materials, and a combination of PU (polyurethane) and TPU materials.

[0052] EVA and Phylon (MD) material combination: EVA is light, elastic, and flexible, and can provide excellent shock absorption. Although it is easy to absorb water and get dirty, these problems can be alleviated to a certain extent by combining it with Phylon. As a secondary high-pressure molded product of EVA, Phylon has better rebound performance, a more delicate appearance, better softness, and easy cleaning. In addition, its hardness and elongation are also better, which can provide stable support for shoes. Combining the advantages of EVA and Phylon, a midsole that is both light and stable can be designed, while providing good shock absorption and resilience. The easy-to-clean nature of Phylon helps reduce the problem of EVA getting dirty, while the elasticity of EVA can enhance the shock absorption effect of Phylon.

[0053] Combination of PU and TPU materials: PU is wear-resistant, elastic, oxidation-resistant, not easy to wrinkle, and can provide excellent wear resistance and elasticity. However, it has strong water absorption, and is easy to rot, turn yellow, and break when exposed to water, which is a disadvantage that needs to be overcome. TPU is wear-resistant and odor-resistant, and has good cushioning and resilience. The strength and durability of TPU make it an ideal choice for combination with PU. Combining the advantages of PU and TPU, a midsole that is both wear-resistant and durable can be designed, while providing excellent cushioning and resilience. The odor-resistant and wear-resistant properties of TPU help extend the service life of the shoe and reduce the problems of rotting, yellowing and breaking of PU due to water absorption.

[0054] The midsole body includes at least three position areas and a frame 9. The position from the heel to the forefoot can be divided into more position areas according to different movement characteristics, three to eight position areas or more than eight position areas, so as to achieve the best natural movement state effect. In the present embodiment, there are four position areas. The three position areas further subdivide each position area into at least two blocks, the outer side and the inner side, along the direction perpendicular to the extension of the sole, or subdivide into three or more blocks, such as the inner side, the middle and the outer side. In the present embodiment, each position area is subdivided into two blocks, the outer side and the inner side.

[0055] In this embodiment, the four position areas are divided into a toe area, a forefoot area, a midfoot area and a heel area according to the position of the sole of the foot from the heel to the forefoot along the direction of the sole of the foot.

[0056] The four position areas are further subdivided into eight blocks along the lateral and medial directions of the sole of the foot perpendicular to the extension direction of the sole, including the lateral part of the toe 7, the medial part of the toe 8, the lateral part of the forefoot 5, the medial part of the forefoot 6, the lateral part of the midfoot 3, the medial part of the midfoot 4, the lateral part of the heel 1 and the medial part of the heel 2.

[0057] The toe region includes a lateral toe portion 7 and a medial toe portion 8 .

[0058] The forefoot region includes a forefoot lateral portion 5 and a forefoot medial portion 6 .

[0059] The midfoot area includes a midfoot lateral portion 3 and a midfoot medial portion 4 .

[0060] The heel region includes a heel lateral portion 1 and a heel medial portion 2 .

[0061] The midsole body is provided with a plurality of grooves 10 at the connection between the eight blocks, and the plurality of grooves 10 extend along and perpendicular to the extension direction of the sole, and the depth of the grooves 10 is greater than or equal to 1 mm. The grooves 10 provide moderate torsion space between different blocks, so that the shoe can better respond to the movement requirements of the foot, allowing the foot to flexibly twist in the shoe according to the natural movement of the user, so as to maintain the best adaptability under different ground, track speed, landing posture and other sports modes.

[0062] Border 9, such as Figure 2 As shown, it is arranged along the circumference of the midsole body and is arranged around the midsole body, and the frame 9 is fixedly connected to the eight blocks. Specifically, the frame 9 is fixedly connected to the eight blocks by glue. By adding a frame 9 on the side wall of the midsole, the stability of the midsole of the shoe is improved. The frame 9 can flexibly adjust its thickness, rigidity and size in the forefoot, midfoot and heel parts according to the functional requirements of different sports shoes to meet the stability and safety requirements in different sports scenes. For example, in order to maintain the flexibility of the midfoot area, the present design reduces the rigidity of the frame 9 in the midfoot area, so that the foot can twist naturally during walking or exercise, thereby improving the comfort of the transition stage. At the same time, the frame 9 also provides a fixed point for the connection between the upper and the midsole of the shoe.

[0063] The midsole body is provided with four functional areas according to the movement characteristics of the sole of the foot, which are arranged according to the density and performance differences of the midsole body materials, including a cushioning area 11 , a rebound area 14 , a balancing area 12 and a supporting area 13 .

[0064] The shock absorbing area 11 is at least located at the outer side of the heel 1 and the outer side of the midfoot 3 to absorb the impact force when the heel touches the ground. The shock absorbing area 11 uses high-performance shock absorbing materials, which can effectively absorb the strong impact force generated when the foot touches the ground, thereby effectively reducing the burden on the knees and ankles, especially reducing the impact when the heel touches the ground. In addition, the design of the shock absorbing area 11 also fully considers the natural characteristics of the center of gravity transfer of the human body after landing, ensuring a smooth transition during the transition of movement posture. For example, in sports shoes such as walking, running and outdoor running, the shock absorbing area 11 domain is usually set on the outer side of the heel and the outer side of the midfoot to provide targeted shock absorbing effects. For tennis shoes, badminton shoes, etc., according to their sports characteristics, the shock absorbing area 11 domain may be extended to the outer side of the heel and the middle or inner side of the heel to provide full-range shock absorbing protection to the greatest extent.

[0065] The rebound area 14 is at least located at the medial part 8 of the toes and the medial part 6 of the forefoot to provide energy feedback when the sole of the foot exerts force. The rebound area 14 uses a material with high elasticity and high energy feedback characteristics, which is intended to quickly restore its original shape when the human body performs active force-generating actions (such as stretching, acceleration, take-off and sudden change of direction, etc.). This feature ensures that the user can obtain strong energy feedback immediately during the ground-pushing phase of gait or when performing an action, which helps to reduce muscle fatigue and improve the fluency and efficiency of movement. In regular exercises such as walking and running, high energy feedback rate materials can help walkers and runners to complete each step of advancement more easily, which not only enhances the fluency of running, but also improves the overall exercise efficiency. For sports such as basketball, tennis, and badminton that require frequent and rapid movement and jumping, high energy feedback rate materials combined with their fast energy feedback response time can provide athletes with more reliable energy support in fierce confrontations, so that they can obtain better power performance when moving quickly, stopping and turning suddenly, and jumping, and improve the overall efficiency of the movement.

[0066] The balancing area 12 connects the cushioning area 11 and the rebound area 14, and is located at least in one of the four position areas to ensure the connection from the heel strike to the forefoot leaving the ground. The balancing area 12 uses a balanced material, which not only ensures sufficient stability, but also provides satisfactory comfort and has a certain rebound performance, ensuring a smooth and natural connection and transition in the entire gait cycle from the heel strike to the forefoot leaving the ground.

[0067] The support area 13 is located in at least one of the four position areas to prevent the heel from turning over too much or too fast. The support area 13 is made of materials with high density, small deformation and good support to enhance the stability of the lower limbs of the midsole during exercise. This design fully takes into account the characteristics of the natural gait of the human body, that is, in natural movements such as walking, running or outdoor running, the heel usually touches the ground on the outside first, then turns outward and gradually transitions forward. If the stability is insufficient, the tibia will rotate forward and cause the knee torsion torque. Therefore, the use of high-density, high-hardness and strong support materials on the medial side of the heel and the midfoot area can improve the stability of the foot, protect and maintain the correct natural gait. In addition, for specific sports such as tennis, basketball, etc., the design of the support area 13 can also be adjusted according to the characteristics of the sport. For example, in these sports, the ankle joint may face greater lateral impact force, so a design in which the density of the lateral part 3 of the midfoot is higher than that of the medial part can be adopted to prevent the ankle joint from turning inward in actions such as extreme saves and side sliding steps, thereby enhancing the stability of the shoe and the safety of the wearer.

[0068] The same block can contain two different functional areas. Allowing the same block to contain two different functional areas allows for optimal settings for specific areas based on specific needs.

[0069] Among the four functional areas, the material density of the shock absorbing area 11 is the smallest, the material density of the support area 13 is the largest, and the material density of the rebound area 14 and the balance area 12 is between the two. The material density of the shock absorbing area 11 is the smallest, which can effectively absorb shock and protect the foot; the material density of the support area 13 is the largest, providing stable support; the material density of the rebound area 14 and the balance area 12 is between the two, which not only ensures sufficient elasticity but also achieves a smooth transition.

[0070] Among the four functional areas, the material hardness of the cushioning area 11 is the smallest, the material hardness of the support area 13 is the largest, and the material hardness of the rebound area 14 and the balance area 12 is between the cushioning area 11 and the support area 13. Adjusting the material hardness of the four functional areas further enhances the performance difference of the functional areas, so that the shoes provide comfort and stability while maintaining good sports responsiveness.

[0071] Among the four functional areas, the material rebound of the shock absorbing area 11 is the smallest, the material rebound of the rebound area 14 is the largest, and the material rebound of the support area 13 and the balance area 12 is between the shock absorbing area 11 and the rebound area 14. By adjusting the material rebound performance, the shoe can provide sufficient energy feedback when the sole of the foot is stretched and exerted force while providing shock absorption and support, thereby improving exercise efficiency.

[0072] The eight blocks of the midsole body are an integrated structure, or the eight blocks and the frame 9 are detachably connected. This embodiment provides two midsole body structural forms. The integrated structure combines advanced foaming or injection molding technology to ensure the close combination and seamless connection between the materials of the midsole blocks, ensuring the integrity and durability of the shoe; while the detachable connection structure facilitates the replacement or adjustment of the blocks, improving the flexibility of the shoe and the possibility of personalized customization.

[0073] In this embodiment, the midsole body is optimized in structure and function, and the manufacturing efficiency of the shoe production process is improved through the integrated production of supercritical foaming materials. The midsole body is divided into at least six blocks and four functional areas according to the sole position and movement characteristics, namely, the cushioning area 11, the rebound area 14, the balance area 12 and the support area 13, to meet the functional requirements of shoes during exercise, including but not limited to cushioning, stability, support, rebound, energy feedback, etc. Specifically, the cushioning area 11 is at least located at the lateral part 1 of the heel and the lateral part 3 of the midfoot, which can effectively absorb the impact force when the heel lands, protect the wearer's feet from injury, and at the same time consider the center of gravity transfer characteristics of the human body after landing and cushioning, ensuring a smooth transition when the movement posture is changed. The rebound area 14 is at least located at the medial part 6 of the forefoot, which can quickly restore the shape of the material when the sole exerts force, ensuring that the user's gait or action ground-pushing stage can respond quickly and provide strong energy feedback, helping the user to reduce muscle fatigue and improve the fluency and efficiency of exercise. The balance area 12 connects the cushioning area 11 and the rebound area 14, ensuring a smooth transition from the heel landing to the forefoot leaving the ground, enhancing the overall performance of the midsole, promoting a smooth transition between functional areas, reducing the abrupt feeling when running, and bringing a more harmonious and natural sports experience to the user. The support area 13 maintains stability during the contact with the ground to prevent the heel from turning too much or too fast.

[0074] A shoe comprises a sole, an upper and the above-mentioned midsole. The midsole is fixedly connected to the sole, and the upper is fixedly connected to the frame. The midsole adopts a multi-density / hardness and multi-block layout technology solution, and can be scientifically designed with full functions according to different sports characteristics to fully meet various functional requirements during sports, including but not limited to shock absorption, stability, support, rebound and energy feedback. Sports shoes made according to the above-mentioned midsole provide the wearer with a smooth transition feeling and a natural sports state experience.

[0075] The following three embodiments are used to demonstrate how to define functional areas and their shoe functional requirements, from simple repetitive sports (walking / running / outdoor activities, etc.) to highly complex sports (tennis / golf, etc.).

[0076] Embodiment 1

[0077] like Figure 3 and Figure 4 The figure shows an example of walking / running / outdoor shoes. According to sports science test data, scientific regional design and functional requirements, the shock absorption area 11 is generally the lateral part 1 of the heel and the lateral part 3 of the midfoot; the support area 13 is generally the medial part 2 of the heel and the medial part 4 of the midfoot; the balance area 12 is generally the lateral part 5 of the forefoot and the lateral part 7 of the toes; and the rebound area 14 is generally the medial part 6 of the forefoot and the medial part 8 of the toes.

[0078] Table 1 Physical properties of each functional area for walking / running / outdoors

[0079] Function Partition hardness density Rebound G-Value High rebound 8 40 0.13 >70 <9 Rebound 7 40 0.13 >65 <9 High rebound 6 40 0.13 >70 <9 Rebound 5 40 0.13 >65 <9 support 4 45 0.15 NA NA High shock absorption 3 40 0.12 <40 <8 support 2 45 0.15 NA NA High shock absorption 1 40 0.12 <40 <8

[0080] Embodiment 2

[0081] like Figure 5 and Figure 6 The example of a tennis shoe is shown in FIG. According to sports science test data, scientific regional design and functional requirements, and according to the characteristics of tennis movements, the shock-absorbing area 11 can cover the lateral heel part 1 and the medial heel part 2 to provide maximum shock-absorbing protection. The support area 13 is generally the lateral forefoot part 5 and the lateral toe part 7, and the balance area 12 is generally the lateral midfoot part 3 and the medial midfoot part 4. The rebound area 14 is generally the medial forefoot part 6 and the medial toe part 8. In this embodiment, when playing tennis, through the insight into key movement patterns and usage requirements, the current optimal setting is obtained, and the support area 13 and the balance area 12 are designed just at the lateral midfoot part 3.

[0082] Table 2 Physical properties of each functional area of ​​tennis shoes

[0083]

[0084]

[0085] Embodiment 3

[0086] like Figure 7 and Figure 8 The example of golf shoes is shown in FIG. According to sports science test data, scientific area design and functional requirements, and according to the characteristics of golf movements, the shock absorbing area 11 is generally the lateral part 1 of the heel and the lateral part 3 of the midfoot; the balance area 12 is generally the medial part 2 of the heel and the medial part 4 of the midfoot, and the rebound area 14 is generally the forefoot area and the toe area. In this embodiment, when playing golf, through the insight into the sports mode and usage requirements (walking + swinging / putting), the current optimal setting is obtained, and the support area 13 and the balance area 12 are designed in the same block.

[0087] Table 3 Physical properties of golf shoes in various functional areas

[0088] Function Partition hardness density Rebound G-Value High rebound 8 45 0.16 >70 <9 High rebound 7 45 0.16 >70 <9 High rebound 6 45 0.16 >70 <9 High rebound 5 45 0.16 >70 <9 balanced 4 45 0.15 NA NA High shock absorption 3 45 0.12 <40 <8 balanced 2 45 0.15 NA NA High shock absorption 1 38 0.12 <40 <8

[0089] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A shoe midsole, characterized in that: The invention comprises a midsole body made of an integrated supercritical foaming material, wherein the midsole body is divided into at least three position areas along the extension direction of the sole from the heel to the forefoot, including the forefoot area, the midfoot area and the heel area; each position area is further subdivided into at least two blocks, the outer side and the inner side, along the direction perpendicular to the extension direction of the sole, to form at least six blocks, including the outer side of the forefoot (5), the inner side of the forefoot (6), the outer side of the midfoot (3), the inner side of the midfoot (4), the outer side of the heel (1) and the inner side of the heel (2); the midsole body is provided with four functional areas according to the movement characteristics of the sole, including a shock absorbing area (11), a rebound area (14) , a balancing area (12) and a supporting area (13); the shock absorbing area (11) is at least located at the lateral part of the heel (1) and the lateral part of the midfoot (3) to absorb the impact force when the heel touches the ground; the rebound area (14) is at least located at the medial part of the forefoot (6) to provide energy feedback when the sole of the foot pushes and stretches; the balancing area (12) connects the shock absorbing area (11) and the rebound area (14) and is at least located in one of the three position areas to ensure the connection of the entire process from the heel touching the ground to the forefoot leaving the ground; the supporting area (13) is located in at least one block of the four position areas to maintain stability in the process of contacting the ground.

2. A shoe midsole as claimed in claim 1, characterized in that: The number of the position areas is four, and the midsole body also includes a toe area, which is located at the toe position of the forefoot area along the extension direction of the sole, and the toe area is further subdivided into two blocks, the outer side and the inner side, along the direction perpendicular to the extension direction of the sole, including the outer side of the toe (7) and the inner side of the toe (8).

3. A shoe midsole as claimed in claim 2, characterized in that: The same block may include two different functional areas.

4. A shoe midsole as claimed in claim 3, characterized in that: The supercritical foaming material is a mixed material consisting of EVA, TPU and POE.

5. A shoe midsole as claimed in claim 4, characterized in that: The midsole body is provided with a frame (9) surrounding the midsole body along the circumferential direction, and the frame (9) is fixedly connected to the eight blocks.

6. A shoe midsole as claimed in claim 5, characterized in that: The midsole body is provided with a plurality of grooves (10) at the connection between the eight blocks, the plurality of grooves (10) extending along the sole extension direction and perpendicular to the sole extension direction, and the depth of the grooves (10) is greater than or equal to 1 mm.

7. A shoe midsole as claimed in claim 6, characterized in that: The eight blocks of the midsole body are an integrally formed structure, or are detachably connected.

8. A shoe midsole as claimed in claim 4, characterized in that: Among the four functional areas, the material density of the shock absorbing area (11) is the smallest, the material density of the supporting area (13) is the largest, and the material density of the rebound area (14) and the balancing area (12) is between the shock absorbing area (11) and the supporting area (13).

9. A shoe midsole as claimed in claim 4, characterized in that: Among the four functional areas, the material hardness of the shock absorbing area (11) is the smallest, the material hardness of the supporting area (13) is the largest, and the material hardness of the rebound area (14) and the balancing area (12) is between the shock absorbing area (11) and the supporting area (13).

10. A shoe midsole as claimed in claim 4, characterized in that: Among the four functional zones, the material rebound of the shock absorbing zone (11) is the smallest, the material rebound of the rebound zone (14) is the largest, and the material rebound of the support zone (13) and the balancing zone (12) is between the shock absorbing zone (11) and the rebound zone (14).

11. A shoe, characterized in that: It comprises a sole, an upper and a midsole as claimed in any one of claims 1 to 10, wherein the midsole is fixedly connected to the sole, and the upper is fixedly connected to the frame (9).

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