Sports shoes

Abstract

The utility model relates to the field of footwear articles, in particular to a pair of sports shoes. The sneaker is sequentially provided with a heel area corresponding to a heel, a rear sole area corresponding to the rear part of a sole, a middle foot area corresponding to an arch part, a front sole area corresponding to the front part of the sole and a front tip area corresponding to the front part of toes from back to front in the longitudinal direction. The shoe further comprises an upper surface, a shoe outsole and a structural outer frame insole connected between the upper surface and the shoe outsole, the structural outer frame insole enables the shoe outsole to be attached to the upper surface, and the hollow structure is formed on the structural outer frame insole. The structural outer frame insole of the sneaker is obtained through an upper-connecting injection molding process, and a plurality of hollow structures are formed on the structural outer frame insole, so that the overall weight of the sneaker is effectively reduced, and the light feeling when the sneaker is worn is improved.

Description

Technical Field

[0001] This utility model relates to the field of footwear, specifically to a sports shoe. Background Technology

[0002] In current shoe manufacturing processes, a large amount of glue is typically used to bond the upper to the sole. However, the excessive use of glue can cause several problems, such as:

[0003] 1. The process is complicated and requires a lot of manual labor;

[0004] 2. During the bonding process between the upper and the sole, the midsole fabric hardens due to absorbing glue, affecting the wearer's foot comfort.

[0005] 3. The adhesive cannot be completely degraded, resulting in poor environmental friendliness;

[0006] 4. If recycled footwear is to be reused, the degradable adhesive requires a significant investment of manpower and resources.

[0007] Noting the problems in the aforementioned shoe manufacturing processes, the industry has been trying to overcome the limitations of "removing glue" or reducing the amount of glue used. This led to the development of the single-layer injection molding process. Single-layer injection molding involves directly injecting liquid plastic raw materials, such as PU (polyurethane), into a shoe mold containing the upper. Within the mold, a chemical reaction and curing process bond the sole and upper tightly together. Footwear produced using this process has a seamless sole and upper, without seams or adhesives, resulting in a more aesthetically pleasing appearance and avoiding problems like separation or fraying caused by seams or adhesives. The product is also more durable. Furthermore, the process reduces the use of glue and other chemicals, lowering environmental pollution and saving energy and time required for bonding processes. The liquid raw material better conforms to the upper and foot shape, making the shoes more comfortable and lightweight. It can also be ergonomically designed to provide better support and cushioning.

[0008] However, PU soles are heavier than those made of other materials, limiting the widespread use of injection molding in shoe manufacturing. Therefore, it is necessary to propose a footwear product or shoe manufacturing process to address at least some of the aforementioned problems. Utility Model Content

[0009] Therefore, the purpose of this invention is to provide a lightweight athletic shoe that does not require the use of glue.

[0010] This utility model provides a sports shoe, which has, in a longitudinal direction from back to front, a heel area corresponding to the heel, a heel area corresponding to the back of the foot, a midfoot area corresponding to the arch, a forefoot area corresponding to the front of the foot, and a toe area corresponding to the front of the toes. It includes an upper, an outsole, and a structural outer frame insole connecting the upper and the outsole. The structural outer frame insole allows the outsole to fit against the upper, and a hollow structure is formed on the structural outer frame insole.

[0011] The structural midsole of this invention is formed through a continuous injection molding process, allowing the upper of the athletic shoe to be bonded to the outsole via a structural outer frame, eliminating the need for glue. This solves the environmental problems associated with glue use in traditional shoe manufacturing and opens up new avenues for product recycling. When disposing of worn-out shoes, there is no need for cumbersome glue dissolution steps; the shoes can be directly recycled in an environmentally friendly manner. From a long-term ESG (Environmental, Social, and Governance) perspective, the entire shoe material can be directly pulverized, easily achieving recycling and providing strong support for achieving sustainable development goals. Furthermore, the structural outer frame of this athletic shoe features several hollowed-out structures, effectively reducing the overall weight of the shoe and enhancing its lightweight feel. Simultaneously, the frame structure cleverly wraps around the upper, strengthening the support and stability of the sole, providing stable and powerful support for the foot and meeting the stringent functional requirements of shoes during exercise.

[0012] In a preferred embodiment, the structural outer frame sole includes: a first support strip that surrounds the outer periphery of the upper and extends from the heel region to the toe region; a first outer frame unit located above the first support strip and covering at least a portion of the toe region; a second outer frame unit located below the first support strip that extends from the forefoot region to the midfoot region and covers at least a portion of the forefoot region and at least a portion of the midfoot region; a third outer frame unit located below the first support strip that extends from the midfoot region to the heel region and covers at least a portion of the midfoot region and at least a portion of the heel region; and a fourth outer frame unit located above the first support strip and covering at least a portion of the heel region.

[0013] In a preferred embodiment, the first outer frame unit includes a plurality of second support strips, which extend obliquely downward from the top of the front tip region to the first support strip, and the hollow structure is formed by the enclosing of two adjacent second support strips and / or the second support strip and the first support strip.

[0014] In a preferred embodiment, the second outer frame unit includes multiple third support strips. The third support strips extend downward at an angle from the front end of the first support strip, wrapping around the forefoot area, and then extend upward at an angle to the first support strip, wrapping at least part of the midfoot area. The hollow structure is formed by the enclosing of two adjacent third support strips and / or the third support strips and the first support strip.

[0015] In a preferred embodiment, the third outer frame unit includes multiple fourth support strips. Each fourth support strip extends downward at an angle from the rear end of the first support strip and wraps around at least part of the heel area, then extends upward at an angle to the third support strip and wraps around at least part of the midfoot area. The hollow structure is formed by the enclosing of two adjacent fourth support strips and / or between the fourth support strip and the first support strip and / or between the fourth support strip and the third support strip and / or between the fourth support strip, the third support strip, and the first support strip.

[0016] In a preferred embodiment, the fourth outer frame unit includes a plurality of fifth support strips, which extend obliquely upward from the rear end of the first support strip and then obliquely downward to the first support strip to wrap at least part of the heel area, and the hollow structure is formed between two adjacent fifth support strips and / or between the fifth support strip and the first support strip.

[0017] In a preferred embodiment, the upper includes at least one of a 3D sock-like structure, a planar flyknit material, a jacquard mesh, a warp-knitted mesh, and a rounded edge mesh.

[0018] In a preferred embodiment, the athletic shoe further includes a midsole located within the upper.

[0019] In a preferred embodiment, the athletic shoe further includes a nylon injection-molded sheet or carbon fiber plate located between the upper and the outsole. Attached Figure Description

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the method for manufacturing sports shoes according to this utility model;

[0022] Figure 2 This is an overall schematic diagram of the sports shoe in this utility model;

[0023] Figure 3 yes Figure 2 Exploded view of a mid-range athletic shoe;

[0024] Figure 4 yes Figure 3 A schematic diagram of the bottom of the structural outer frame.

[0025] Explanation of reference numerals in the attached figures

[0026] 110 - Heel area; 120 - Rearfoot area; 130 - Midfoot area; 140 - Forefoot area; 150 - Toe area; 210 - Upper; 220 - Outsole; 230 - Structural outer frame insole; 231 - First support bar; 240 - First outer frame unit; 241 - Second support bar; 250 - Second outer frame unit; 251 - Third support bar; 260 - Third outer frame unit; 261 - Fourth support bar; 270 - Fourth outer frame unit; 271 - Fifth support bar; 280 - Last; 310 - Injection mold for upper; 320 - Injection pipe; 410 - First injection material; 420 - Second injection material. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to specific embodiments. The embodiments given are only for illustrating the present invention and are not intended to limit the scope of the present invention.

[0028] In the following description, details of the present invention are set forth as preferred embodiments. Those skilled in the art will understand that modifications, including additions and / or substitutions, can be made without departing from the scope and spirit of the present invention. Specific details may be omitted so as not to obscure the present invention; however, this disclosure is written to enable those skilled in the art to practice the teachings herein without undue experimentation.

[0029] Terminology Definition

[0030] In this article, the term "athletic shoes" can be applied to a wide range of footwear suitable for various everyday or sporting occasions, including but not limited to: basketball shoes, walking shoes, running shoes, casual shoes, tennis shoes, soccer shoes, American soccer shoes, cross-training shoes, spiked shoes, etc.

[0031] Certain directional terms used in the description of the accompanying drawings below, such as “above,” “below,” and other directional terms, will be understood to have their normal meaning and refer to those directions as normally viewed in the drawings. Unless otherwise specified, the directional terms used in this specification are generally in accordance with the conventional directions understood by those skilled in the art.

[0032] In this invention, the term "inner side" refers to the position between the two feet, and "outer side" refers to the position away from the position between the two feet.

[0033] The term "longitudinal" refers to the direction in which a component extends a certain length. For example, the longitudinal direction of an athletic shoe extends between the forefoot and heel areas. The terms "forward" or "forward-facing" are used to refer to the general direction from the heel area toward the forefoot area, and the terms "backward" or "rearward-facing" are used to refer to the opposite direction, i.e., from the forefoot area toward the heel area. In some cases, a component can be identified by a longitudinal axis and the forward and backward longitudinal directions along that axis. The longitudinal direction or axis can also be referred to as the fore-rear direction or axis.

[0034] The term "lateral" refers to the direction in which a component extends a certain width. For example, the lateral direction of an athletic shoe extends between the outer and inner sides of the shoe. The lateral direction or axis can also be referred to as the lateral direction or axis, or the mid-outer direction or axis.

[0035] The term "vertical" or "upright" refers to a direction that is approximately perpendicular to both the horizontal and vertical directions. For example, in the case where the sole structure is laid flat on the ground surface, the vertical direction can extend upwards from the ground surface. It will be understood that each of these directional adjectives can be applied to an individual component of the sole structure. The term "upwards" or "facing upwards" refers to a vertical direction pointing towards the top of the component. The term "downwards" or "facing downwards" refers to a vertical direction opposite to the upwards direction, pointing towards the bottom of the component, and can generally point towards the bottom of the sole structure of the athletic shoe.

[0036] The terms “first,” “first,” “second,” “second,” and similar terms used in this utility model do not indicate any order, quantity, or importance, but are used to distinguish one component from other components.

[0037] The terms "joining", "fitting" and similar terms used in this utility model include both indirect connection of two components with the aid of an intermediate layer (e.g., adhesive, welding agent, etc.) or intermediate parts (e.g., connectors, transition parts, etc.) and direct connection of two components without the aid of any intermediate layer (e.g., adhesive, welding agent, etc.) or intermediate parts (e.g., connectors, transition parts, etc.).

[0038] Reference Figure 1 This utility model provides a method for manufacturing sports shoes, including the following steps:

[0039] S10. Place the last 280 into the upper 210 of the shoe;

[0040] S20. Place the shoe outsole 220 into the injection mold 310;

[0041] S30. Place the shoe upper 210 described in step S10 into the upper injection mold 310.

[0042] S40. The upper injection mold 310 is closed and the first injection material 410 and the second injection material 420 are injected into the upper injection mold 310 through the injection pipe 320, so that the outsole 220 is attached to the upper surface 210.

[0043] S50. After cooling, open the injection mold 310 and take out the sports shoe with the structural outer frame and insole 230, wherein the structural outer frame and insole 230 has a hollow structure.

[0044] It is understood that the injection mold 310 has a molding cavity corresponding to the structural outer frame insole 230. After the first injection material 410 and the second injection material 420 flow into the molding cavity and solidify, the structural outer frame insole 230 is formed, and the outsole 220 is attached to the upper 210. Furthermore, in the above manufacturing method, the midsole located within the upper 210 may not be included. The midsole can be inserted into the upper 210 by means of replacement, allowing for a wider variety of midsole types and materials to suit different scenarios and sports attributes.

[0045] In a preferred embodiment, step S09, which precedes step S10, may be included: placing the midsole into the upper 210 to obtain a sports shoe with the midsole fixed inside the upper 210.

[0046] Specifically, the manufacturing method of the sports shoe in this utility model can be realized by a continuous injection molding machine. A continuous injection molding machine typically includes a continuous injection mold 310, an injection pipe 320, a drive unit, and a control system. The continuous injection mold 310 provides the molding cavity and ensures reliable opening and closing of the mold, guaranteeing sufficient locking force during injection and holding pressure to prevent overflow and facilitate demolding. The injection pipe 320 ensures that the first injection material 410 and the second injection material 420 are uniformly heated, melted, and plasticized to reach a flowable state. Under certain pressure and speed, a fixed quantity of the first injection material 410 and the second injection material 420 are injected into the molding cavity respectively. After injection molding, the pipe also holds pressure on the injection material in the molding cavity and replenishes the cavity. The drive unit provides the required power for the injection molding machine to operate according to process requirements, meeting the force and speed requirements of the moving parts. The control system is used to control the various actions of the injection molding machine, so that they can be controlled and adjusted effectively according to the pre-set program, including time, temperature, pressure, speed and various program action parameters.

[0047] It is understood that in this invention, the first injection molding material 410 includes an isocyanate component, and the second injection molding material 420 includes a polyol component. The -NCO (isocyanate group) in the isocyanate undergoes an addition polymerization reaction with the -OH (hydroxyl group) in the polyol. Specifically, the -NCO group is very reactive and combines with the hydrogen atom in the -OH group to form a urethane bond (-NHCOO-). During this reaction, the molecular chains continuously grow and cross-link, ultimately forming a three-dimensional network structure of the polyurethane polymer. Under suitable temperature and humidity conditions, the first injection molding material 410 and the second injection molding material 420 can react and cure in a short time after mixing, generally within a few minutes to tens of minutes. This makes the manufacturing method of the athletic shoe in this invention highly efficient, enabling rapid molding of athletic shoes where the outsole 220 is connected to the upper 210. Furthermore, by adjusting the formulation and ratio of the first injection molding material 410 and the second injection molding material 420, and by adding different additives, the reaction rate and the properties after curing can be adjusted. For example, adding a catalyst can accelerate the reaction rate, and adding a chain extender can increase the molecular weight and strength of the polymer, thereby meeting the performance requirements of different footwear products.

[0048] The shoe-making method of this invention utilizes the chemical reaction between the first injection material 410 and the second injection material 420 within the injection mold 310 to bond the upper 210 of the athletic shoe to the outsole 220 via a structural outer frame and insole 230. This eliminates the need for glue, solving the environmental problems associated with glue use in traditional shoe-making processes and opening a new path for product recycling. When disposing of worn-out shoes, there is no need for cumbersome glue-breaking steps; the shoes can be directly recycled in an environmentally friendly manner. From a long-term ESG perspective, the entire shoe material can be directly crushed for easy recycling, thus providing strong support for achieving sustainable development goals. Furthermore, the structural outer frame and insole 230 features several hollow structures, effectively reducing the overall weight of the athletic shoe and enhancing its lightness during wear. Simultaneously, the frame structure cleverly wraps around the upper 210, strengthening the support and wrapping performance of the sole, providing stable and powerful support for the foot, and meeting the stringent functional requirements of shoes during exercise.

[0049] Reference Figures 2 to 3The present invention also provides a sports shoe, wherein the sports shoe has, in the longitudinal direction from back to front, a heel area 110 corresponding to the heel, a heel area 120 corresponding to the back of the foot, a midfoot area 130 corresponding to the arch of the foot, a forefoot area 140 corresponding to the front of the foot, and a forefoot area 150 corresponding to the front of the toes. It includes an upper 210, an outsole 220, and a structural outer frame insole 230 connecting the upper 210 and the outsole 220. The structural outer frame insole 230 is obtained by a continuous injection molding process, so that the outsole 220 is attached to the upper 210. The structural outer frame insole 230 has a hollow structure.

[0050] It is understood that the structural outer frame bottom 230 in this utility model includes a first part located inside the upper surface 210, a second part located outside the upper surface 210, and a third part located at the bottom of the upper surface 210 connecting the first part and the second part. The hollow structure is formed in the first part and the second part, the third part is preferably a solid structure, and the first part and the second part are approximately symmetrical.

[0051] like Figure 4 As shown, the structural outer frame sole 230 of this utility model includes a first support strip 231, which surrounds the outer periphery of the upper surface 210 and extends from the heel region 110 to the forefoot region 150; a first outer frame unit 240, which is located above the first support strip 231 and wraps around at least part of the forefoot region 150; a second outer frame unit 250, which is located below the first support strip 231, extends from the forefoot region 140 to the midfoot region 130 and wraps around at least part of the forefoot region 140 and at least part of the midfoot region 130; a third outer frame unit 260, which is located below the first support strip 231, extends from the midfoot region 130 to the heel region 120 and wraps around at least part of the midfoot region 130 and at least part of the heel region 120; and a fourth outer frame unit 270, which is located above the first support strip 231 and wraps around at least part of the heel region 110.

[0052] The first outer frame unit 240 is located on the front side of the upper surface 210, the second outer frame unit 250 is located on the inner and outer sides of the upper surface 210, the third outer frame unit 260 is located on the inner and outer sides of the upper surface 210, and the fourth outer frame unit 270 is located on the rear side of the upper surface 210.

[0053] Specifically, the first outer frame unit 240 includes multiple second support bars 241, which extend obliquely downward from the top of the front tip region 150 to the first support bar 231. The hollow structure is formed between two adjacent second support bars 241 or between the second support bars 241 and the first support bar 231.

[0054] Furthermore, the second outer frame unit 250 includes multiple third support strips 251. Each third support strip 251 extends downwards at an angle from the front end of the first support strip 231, wrapping around the forefoot region 140, and then extends upwards at an angle to the first support strip 231, wrapping at least a portion of the midfoot region 130. The hollow structure is formed between adjacent third support strips 251 and / or between the third support strip 251 and the first support strip 231. This hollow structure is preferably a streamlined structure.

[0055] Furthermore, the third outer frame unit 260 includes multiple fourth support strips 261. Each fourth support strip 261 extends downwards at an angle from the rear end of the first support strip 231, wrapping at least a portion of the heel region 120, and then extends upwards at an angle to the third support strip 251, wrapping at least a portion of the midfoot region 130. The hollow structure is formed by the arrangement of adjacent fourth support strips 261, / or between the fourth support strip 261 and the first support strip 231, / or between the fourth support strip 261 and the third support strip 251, / or between the fourth support strip 261, the third support strip 251, and the first support strip 231. This hollow structure is preferably a streamlined structure.

[0056] In addition, the fourth outer frame unit 270 includes a plurality of fifth support strips 271. The fifth support strips 271 extend obliquely upward from the rear end of the first support strip 231 and then obliquely downward to the first support strip 231 to wrap at least part of the heel area 110. The hollow structure is formed between two adjacent fifth support strips 271 and / or between the fifth support strips 271 and the first support strip 231.

[0057] In one embodiment, the first support bar 231, the second support bar 241, the third support bar 251, the fourth support bar 261 and the fifth support bar 271 described above can be structures that change from thin to thick, or from thick to thin, or from thick to thin and then back to thick, or from thin to thick and then back to thin.

[0058] Furthermore, in one embodiment of this invention, the upper 210 may include at least one of the following: a 3D sock-like structure, a flat flyknit material, jacquard mesh, warp-knitted mesh, and rounded-edge mesh. Further, in a preferred embodiment, the athletic shoe may include a midsole fixed within the upper 210. In another preferred embodiment, to allow for the use of more types and materials of midsoles to suit different scenarios and sports attributes, the athletic shoe may include a removable midsole within the upper 210.

[0059] To enrich the functions and types of athletic shoes, the athletic shoes of this utility model may also include a nylon injection-molded sheet or carbon plate located between the upper 210 and the outsole 220.

[0060] It is understood that the midsole of the shoe in this utility model can be made of materials such as EVA (ethylene-vinyl acetate copolymer), PU or supercritical midsole, and the outsole 220 can be made of materials such as rubber, TPU (thermoplastic polyurethane elastomer) or PU.

[0061] In this invention, the upper 210 of the athletic shoe is bonded to the outsole 220 via a structural outer frame and sole 230, eliminating the need for glue. This solves the environmental problems associated with glue use in traditional shoemaking processes and opens up new avenues for product recycling. When disposing of worn-out shoes, there is no need for cumbersome glue-breaking steps; the shoes can be directly recycled in an environmentally friendly manner. From a long-term ESG perspective, the entire shoe material can be directly pulverized for easy recycling, thus providing strong support for achieving sustainable development goals. Furthermore, the structural outer frame and sole 230 feature several hollow structures, effectively reducing the overall weight of the athletic shoe and enhancing its lightweight feel. Simultaneously, the frame structure cleverly wraps around the upper 210, strengthening the sole's support and providing stable and powerful support for the foot, meeting the stringent functional requirements of shoes during exercise.

[0062] The embodiments of this utility model have been illustrated and described herein, but those skilled in the art should understand that various modifications, omissions, and additions can be made without departing from the spirit and scope of this utility model. It should not be understood as limited to the specific embodiments described herein, but encompasses all possible embodiments embodied within the scope and equivalents of the features described in the appended claims.

[0063] The dimensions and values ​​disclosed herein should not be construed as strictly limited to the precise numerical values ​​stated. Rather, unless otherwise specified, each such dimension is intended to represent the value and a functionally equivalent range around that value. For example, a dimension disclosed as “40 mm” is intended to represent “approximately 40 mm”.

[0064] All documents referenced in the “Detailed Description” section are incorporated herein by reference in the relevant sections; no reference to any document should be construed as an admission that it is prior art concerning this utility model. In the event of any conflict between the meaning or definition of any term in this written document and the meaning or definition of any term in the referenced documents, the meaning or definition assigned to the term in this written document shall prevail.

[0065] While specific embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that many other changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the appended claims are intended to cover all such changes and modifications within the scope of the present invention.

[0066] When describing elements of the present invention or their preferred embodiments(s), the articles “a,” “an,” “the,” and “the” are intended to indicate the presence of at least one element. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that additional elements may be present in addition to the listed elements. Many modifications and variations may be made to the present invention without departing from the spirit and scope thereof. Therefore, the above embodiments are not intended to limit the scope of the present invention.

Claims

1. An athletic shoe having, in order from rear to front in a longitudinal direction, a heel region (110) corresponding to a heel, a rear ball region (120) corresponding to a rear portion of a ball, a midfoot region (130) corresponding to an arch portion, a front ball region (140) corresponding to a front portion of a ball, and a forefoot region (150) corresponding to a front portion of a toe, characterized in that, The upper face (210), the outsole (220), and the structural outer frame midsole (230) connected between the upper face (210) and the outsole (220) are further included, wherein the structural outer frame midsole (230) makes the outsole (220) fit to the upper face (210), and the structural outer frame midsole (230) is formed with a hollow structure.

2. The sports shoe according to claim 1, characterized in that, The structural outer frame midsole (230) includes: a first support strip (231) surrounding the outer periphery of the upper face (210) and extending from the heel area (110) to the forefoot area (150); a first outer frame unit (240) above the first support strip (231) and wrapping at least part of the forefoot area (150); a second outer frame unit (250) below the first support strip (231), extending from the forefoot area (140) to the midfoot area (130) and wrapping at least part of the forefoot area (140) and at least part of the midfoot area (130); a third outer frame unit (260) below the first support strip (231), extending from the midfoot area (130) to the rearfoot area (120) and wrapping at least part of the midfoot area (130) and at least part of the rearfoot area (120); a fourth outer frame unit (270) above the first support strip (231) and wrapping at least part of the heel area (110).

3. The sports shoe according to claim 2, characterized in that The first outer frame unit (240) includes a plurality of second support strips (241) extending obliquely downward from the top of the forefoot area (150) to the first support strip (231), and the hollow structure is formed between adjacent two second support strips (241) and / or between the second support strips (241) and the first support strip (231).

4. The sports shoe according to claim 2, wherein The second outer frame unit (250) includes a plurality of third support strips (251) extending obliquely downward from the front end of the first support strip (231) to wrap the forefoot area (140) and then extending obliquely upward to the first support strip (231) and wrapping at least part of the midfoot area (130), and the hollow structure is formed between adjacent two third support strips (251) and / or between the third support strips (251) and the first support strip (231).

5. The sports shoe according to claim 4, characterized in that The third outer frame unit (260) comprises a plurality of fourth support bars (261) which are extended downwardly from the rear end of the first support bar (231) and wrapped at least part of the rear sole area (120) and then extended upwardly to the third support bar (251) and wrapped at least part of the midfoot area (130), and the fourth support bars (261) between each other and / or the fourth support bars (261) and the first support bar (231) and / or the fourth support bars (261) and the third support bar (251) and / or the fourth support bars (261), the third support bar (251) and the first support bar (231) form the hollow structure.

6. The sports shoe according to claim 2, wherein The fourth outer frame unit (270) comprises a plurality of fifth support bars (271) which are extended upwardly from the rear end of the first support bar (231) and then extended downwardly to the first support bar (231) to wrap at least part of the heel area (110), and the fifth support bars (271) between each other and / or the fifth support bars (271) and the first support bar (231) form the hollow structure.

7. The sports shoe according to claim 1, wherein The upper surface (210) comprises at least one of 3D sock structure, flat flyknit material, jacquard mesh, warp-knitted mesh, and round-edge mesh.

8. The sports shoe according to claim 1, wherein The sports shoes further comprise a shoe insole located in the upper surface (210).

9. The sports shoe according to claim 1, wherein The sports shoes further comprise a nylon injection sheet or a carbon plate located between the upper surface (210) and the shoe outsole (220).

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