CN210870092U - Shoe sole - Google Patents

Abstract

The application discloses a shoe sole. This sole includes: set up in the carbon fiber composite sheet of sole, carbon fiber composite sheet includes that first carbon fiber weaves the cloth and spreads the layer, sets up the second that first carbon fiber weaves the cloth and spread the layer, set up the well sufficient enhancement layer of at least one deck on the layer is spread to the second to and set up the third that sets up on each well sufficient enhancement layer and spread the layer, wherein: the first carbon fiber woven cloth laying layer is arranged in the full palm area of the sole; the second layer is laid in the full palm area of the sole; the third layer is laid in the full palm area of the sole; and each middle foot reinforcing layer is sequentially stacked and laid in the middle foot area of the sole. This sole is because in the carbon fiber composite sheet, the layer is spread with first carbon fiber woven cloth to the well sufficient enhancement layer, the second is spread the layer and is spread the layer with the third and adopt heterogeneous mode of laying, for the sole in the homogeneity insole among the prior art, has improved the rigidity of buckling of sole to the comfort of shoes has been improved.

Description

Shoe sole

Technical Field

The application relates to the field of footwear, in particular to a sole.

Background

Along with the continuous development of society, the improvement of quality of life, the user also becomes higher and higher to the requirement of shoes comfort, and wherein, the bending rigidity of sole is great to shoes comfort influence. Especially for the users who love sports, the bending rigidity of the sole is too high or too low during the sports process, which can cause great influence on the comfort of the users, even the leg cramp phenomenon. There is therefore a need for an improvement in the bending stiffness of existing soles to improve the comfort of the shoe.

Disclosure of Invention

The embodiment of the application provides a sole for improve the bending rigidity of current sole.

The embodiment of the application provides a sole, includes: the carbon fiber composite board comprises a first carbon fiber woven cloth laying layer, a second laying layer arranged on the first carbon fiber woven cloth laying layer, at least one middle foot reinforcing layer arranged on the second laying layer, and a third laying layer arranged on each middle foot reinforcing layer;

the first carbon fiber woven cloth laying layer is arranged in the full palm area of the sole;

the second paving layer is laid in the full palm area of the sole;

the third paving layer is laid in the full palm area of the sole; and the number of the first and second groups,

each of the mid-foot reinforcing layers is sequentially laid in the mid-foot area of the sole.

Preferably, the ply angle of the composite carbon fiber woven cloth in the first carbon fiber woven cloth ply is 0 degree, 30 degrees, 45 degrees, 60 degrees or 90 degrees, wherein the ply angle is specifically the included angle between the warp or weft of the composite carbon fiber woven cloth and the direction from the heel to the half sole.

Preferably, the ply angle of the composite carbon fiber woven cloth of the first carbon fiber woven cloth ply is 0 degree.

Preferably, the carbon fiber composite board comprises 3 layers of middle foot reinforcing layers which are sequentially stacked.

Preferably, the ply angle of the composite carbon fiber unidirectional cloth in the middle foot reinforcing layer arranged on the upper surface of the second ply is 0 degree;

the composite carbon fiber unidirectional cloth layer angle arranged in the middle foot reinforcing layer on the lower surface of the third layer is 0 degree; and the number of the first and second groups,

and in the middle foot reinforcing layer between the middle foot reinforcing layer on the surface of the second layer and the middle foot reinforcing layer on the surface of the third layer, the layer spreading angle of the composite carbon fiber unidirectional cloth is 0 degree.

Preferably, the sole further comprises a midsole, wherein the carbon fiber composite plate is embedded in the midsole or arranged on the upper surface of the midsole.

Preferably, the sole further comprises an outsole disposed on a lower surface of the midsole.

Preferably, the thickness of the first carbon fiber woven cloth laying layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm;

the thickness of the second paving layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm;

the thickness of the third layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm; and the number of the first and second groups,

the thickness of each midfoot reinforcing layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm.

Preferably, the thickness of the first carbon fiber woven cloth laying layer, the thickness of the second laying layer, the thickness of the third laying layer and the thickness of each middle foot reinforcing layer are all 0.4 mm.

Preferably, the first carbon fiber woven cloth laying layer is made of composite carbon fiber woven cloth;

the second layer is made of composite carbon fiber woven cloth, composite carbon fiber unidirectional cloth or glass fiber cloth;

the third layer is made of composite carbon fiber woven cloth, composite carbon fiber unidirectional cloth or glass fiber cloth; and the number of the first and second groups,

each of the middle foot reinforcing layers is made of composite carbon fiber unidirectional cloth.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

adopt the sole that this application embodiment provided, this sole includes the carbon fiber composite sheet, this carbon fiber composite sheet includes that first carbon fiber woven cloth lays the layer, set up the second that first carbon fiber woven cloth laid the layer and spread the layer, set up the well sufficient enhancement layer of at least one deck on the layer is spread to the second, and set up the third on each well sufficient enhancement layer and spread the layer, wherein, first carbon fiber woven cloth lays the layer and locates the full palm region of sole, the second is spread the layer and is laid the full palm region of sole, the third is spread the layer and is laid the full palm region of sole, each well sufficient enhancement layer is in proper order to range upon range of the well sufficient region of laying the sole. This sole is because in the carbon fiber composite sheet, the layer is spread with first carbon fiber woven cloth to the well sufficient enhancement layer, the second is spread the layer and is spread the layer with the third and adopt heterogeneous mode of laying, for the sole in the homogeneity insole among the prior art, has improved the rigidity of buckling of sole to the comfort of shoes has been improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of a specific structure of a sole according to an embodiment of the present application;

FIG. 2 is a schematic view of another embodiment of a sole according to the present application;

FIG. 3 is a schematic structural diagram of a carbon fiber composite plate in a sole according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a sole in a practical scenario provided in the embodiment of the present application;

FIG. 5 is a schematic view of a shoe having a sole according to an embodiment of the present invention;

FIG. 6 is a top view of a carbon fiber composite plate of a sole in a practical scenario provided by an embodiment of the present application;

fig. 7 is a schematic view of a change of a sole structure during a movement process in an actual scene provided by an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

As mentioned above, the bending stiffness of the sole has a large influence on the comfort of the shoe. In current soles, a homogeneous midsole is generally made of an elastic material so that the bending stiffness of each region of the sole is substantially uniform. However, the bending stiffness of such a sole with a homogeneous midsole is limited by the material from which the midsole is made, and is usually too high or too low due to the material from which the sole is made, for example, too high may be close to 0.6Nm/Deg, or too low may be close to 0.2Nm/Deg, where Nm/Deg is newton meters per degree. Therefore, there is a need for an improved shoe sole with such a homogenous midsole, which improves the bending stiffness of the shoe sole to enhance the comfort of the shoe.

Based on this, this application embodiment provides a sole, as shown in fig. 1 and fig. 2 are the structure sketch map of this sole. The sole 10 may include a midsole 11 and a carbon fiber composite plate 14, and the sole 10 may further include an outsole 15. The midsole 11 may be formed by directly integrating corresponding materials, or may be formed by bonding the upper portion 12 to the lower portion 13. Wherein the midsole 11 is disposed on the outsole 15 and, for the carbon fiber composite plate 14, it is embedded in the midsole 11. When the midsole 11 is formed by attaching the upper portion 12 to the lower portion 13, the carbon fiber composite plate 14 may be embedded in the lower portion 13 and thus embedded in the midsole 11, as shown in fig. 1; or alternatively, may be embedded in the upper portion 12, and thus in the midsole 11; the carbon fiber composite plate 14 may be disposed between the upper portion 12 and the lower portion 13 so as to be embedded in the midsole 11, as shown in fig. 2; it is of course also possible to embed the upper part 12, the lower part 13 and between the upper part 12 and the lower part 13 simultaneously, so that a plurality of carbon fibre composite plates 14 are provided.

Regarding the structure of the carbon fiber composite board 14, as shown in fig. 3, the carbon fiber composite board 14 includes a first carbon fiber woven cloth ply 141, a second ply 142, a third ply 144, and at least one midfoot reinforcing layer 143. The second ply 142 is disposed on the first carbon fiber woven cloth ply 141, the middle foot reinforcing layers 143 are sequentially disposed on the second ply 142 in a stacked manner, and the third ply 144 is disposed on each of the middle foot reinforcing layers 143.

The number of the midfoot reinforcing layers 143 may be 1, 2, 3, or another number. In practical applications, the number of the midfoot reinforcing layers 143 may be determined by taking into consideration factors such as shoe size and sole thickness.

For the thicknesses of the first carbon fiber woven cloth ply 141, the second ply 142, the third ply 144, and each of the mid-foot reinforcing layers 143, the thickness of the first carbon fiber woven cloth ply 141 is greater than or equal to 0.1mm and less than or equal to 0.5mm, for example, the thickness of the first carbon fiber woven cloth ply 141 is 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, or other thickness values between 0.1mm and 0.5 mm.

The second ply 142 also has a thickness greater than or equal to 0.1mm and less than or equal to 0.5mm, such as 0.2mm, 0.4mm, 0.5mm, or other thickness values; the thickness of the third ply 144 is greater than or equal to 0.1mm and less than or equal to 0.5 mm; the thickness of each midfoot reinforcing layer 143 is greater than or equal to 0.1mm and less than or equal to 0.5 mm.

In fig. 3, a is the forefoot region, B is the midfoot region, and C is the rear group region. A. B and C together make up the full palm area and in fig. 3A, B and C are the same length, each occupying one third of the full palm area.

In the carbon fiber composite plate 14, the first carbon fiber woven fabric layer 141 is provided in the full palm region of the sole, the second layer 142 is provided in the full palm region of the sole, the third layer 144 is provided in the full palm region of the sole, and the respective mid-foot reinforcing layers 143 are sequentially laid in the mid-foot region B of the sole. This results in the carbon fiber composite panel 14 having the midfoot region B, which includes at least one layer of the midfoot reinforcing layer 143, being slightly thicker than the forefoot region a and the rear group region C.

The first carbon fiber woven fabric layer 141 is made of a composite carbon fiber woven fabric, and the composite carbon fiber woven fabric used to make the first carbon fiber woven fabric layer 141 may have a specification of 1K, 3K, 6K, 12K, or 24K. In addition, the composite carbon fiber woven cloth is formed by weaving composite carbon fibers in a warp-weft mode, and in the warp-weft weaving process, the warp-weft ratio can be 1:1, namely the warp and weft are woven in a ratio of 1: the number ratio of 1 was used for knitting.

The second layer 142 may be made of woven composite carbon fiber cloth with a specification of 1K, 3K, 6K, 12K or 24K, or may be made of unidirectional composite carbon fiber cloth with a specification of 1K, 3K, 6K, 12K or 24K, or may be made of glass fiber cloth.

The third ply 144 may be made of woven composite carbon fiber cloth with specification of 1K, 3K, 6K, 12K or 24K, or may be made of unidirectional composite carbon fiber cloth with specification of 1K, 3K, 6K, 12K or 24K, or may be made of glass fiber cloth.

For each midfoot reinforcing layer 143 in the carbon fiber composite panel 14, each may be made of composite carbon fiber uni-directional cloth with a gauge of 1K, 3K, 6K, 12K, or 24K, respectively. For example, the carbon fiber composite board 14 includes 3 middle foot reinforcing layers 143, and the respective composite carbon fiber unidirectional fabrics have specifications of 3K, 6K and 12K.

For the composite carbon fiber manufactured into the composite carbon fiber unidirectional cloth and the composite carbon fiber woven cloth, the performance grade of the composite carbon fiber can be T300, T700, T800 or T1000. And, this composite carbon fiber includes carbon fiber, glass fiber, resin and/or auxiliary agent, wherein: the mass ratio of the carbon fibers, the glass fibers, the resin and the auxiliary agent is as follows: (30-70): (0-30): (30-70): (0-10). For example, the composite carbon fiber is prepared by mixing 40: 15: 50: 5, or the mixture of carbon fiber, glass fiber, resin and auxiliary agent in a mass ratio of 70: 30: 70: 10 of carbon fiber, glass fiber, resin and auxiliary agent, or is prepared from the following components in percentage by weight (30-70): (0-30): (30-70): (0-10) carbon fibers, glass fibers, resin and an auxiliary agent in other mass ratios.

The resin included in the composite carbon fiber can be epoxy resin, phenolic resin, polycarbonate, nylon, thermoplastic polyurethane, polyether ether ketone or polyether ketone. The auxiliary agent included in the composite carbon fiber can be a curing agent and/or a diluent, wherein the curing agent is selected from acid anhydrides, imidazoles, diaminodiphenylmethane, amine epoxy or thiomethyl toluene diamine, and the diluent can be propylene oxide butyl ether.

In particular, in the carbon fiber composite board 14, the ply angle of the composite carbon fiber woven fabric used for making the first carbon fiber woven fabric ply 141 may be 0 degree, 30 degrees, 45 degrees, 60 degrees or 90 degrees, wherein the ply angle is specifically an included angle between the warp yarn or weft yarn of the composite carbon fiber woven fabric and the direction from the heel to the half sole. For example, the first carbon fiber woven cloth layer 141 is supported by 3K composite carbon fiber woven cloth, and the layer angle is 0 degree.

The spreading angle of the composite carbon fiber woven cloth, the composite carbon fiber unidirectional tape and the glass fiber cloth for manufacturing the second spreading layer 142 can also be 0 degree, 30 degrees, 45 degrees, 60 degrees or 90 degrees, and can be different from the spreading angle of the composite carbon fiber woven cloth of the first carbon fiber woven cloth spreading layer 141, so that a certain angle difference exists between the composite carbon fiber woven cloth of the second spreading layer 142 and the first carbon fiber woven cloth spreading layer 141, and the friction force is increased. Wherein the layer laying angle of the composite carbon fiber unidirectional tape is an included angle between warp or weft of the composite carbon fiber unidirectional tape and the direction from the heel to the half sole; the layering angle of the glass fiber cloth is the included angle between the warp or weft of the glass fiber cloth and the direction from the heel to the half sole.

The ply angle of the composite carbon fiber woven cloth for making the third ply 144 may also be 0 degree, 30 degrees, 45 degrees, 60 degrees or 90 degrees; the ply angle of the composite carbon fiber unidirectional tape of each of the midfoot reinforcing layers 143 may also be 0 degrees, 30 degrees, 45 degrees, 60 degrees, or 90 degrees, respectively. For example, the carbon fiber composite board 14 includes 3 midfoot reinforcing layers 143, wherein the ply angle of the midfoot reinforcing layer 143 disposed on the second ply surface 142 is 0 degrees, the ply angle of the midfoot reinforcing layer 143 disposed on the lower surface of the third ply 144 is 0 degrees, and the ply angle of the midfoot reinforcing layer 143 interposed between the midfoot reinforcing layer 143 on the second ply surface 142 and the midfoot reinforcing layer 143 on the lower surface of the third ply 144 is 90 degrees.

In practical applications, in order to increase the friction force between the two adjacent layers, when the ply angles of the first carbon fiber woven cloth ply 141, the second ply 142, the third ply 144, and each of the midfoot reinforcing layer 143 are set, the ply angles of the two adjacent layers are usually set to be different, so that there is a certain angle difference between the first carbon fiber woven cloth ply 141 and the second ply 142, between the second ply 142 and the midfoot reinforcing layer 143, between the midfoot reinforcing layer 143 and the midfoot reinforcing layer 143, and between the midfoot reinforcing layer 143 and the third ply 144.

The midsole 11 may be made of a foamed material, for example, the midsole 11 may be integrally made of the foamed material, or the upper portion 12 and the lower portion 13 of the midsole 11 may be integrally made of the foamed material, and then the carbon fiber composite plate 14 may be disposed between the upper portion 12 and the lower portion 13. After the midsole 11 is prepared by foaming the material, an outsole 15 may be attached to a designated area of the bottom of the midsole 11, and the outsole 15 may be prepared by using an anti-slip and wear-resistant outsole material.

The foam used to form midsole 11 may be selected from any one or more of the following: nylon elastomers, thermoplastic polyurethanes, cast polyurethanes, millable polyurethanes, thermoplastic polyester elastomers, ethylene-octene copolymers, ethylene-octene block copolymers, ethylene-vinyl acetate copolymers, styrene-butadiene block copolymers, hydrogenated styrene-butadiene block copolymers, high styrene rubbers, brominated butyl rubbers, butadiene rubbers, silicone rubbers, ethylene propylene diene rubbers, natural rubbers, nitrile rubbers.

The wear-resistant and slip-resistant outsole material used to prepare outsole 15 may be selected from any one or more of the following: butadiene rubber, styrene-butadiene rubber, natural rubber, butyl rubber, nitrile rubber, isoprene rubber, chloroprene rubber, bromobutyl rubber, thermoplastic polyurethane, cast polyurethane, mixed polyurethane, nylon elastomer, thermoplastic polyester elastomer.

The above is a specific description of the sole 10 provided in the embodiments of the present application, and the sole 10 can be further described with reference to specific examples.

Fig. 4 shows a schematic view of the structure of the shoe sole 10 according to this example, and fig. 5 shows a schematic view of a shoe including the shoe sole 10. In the sole 10 provided in this example, the midsole 11 includes an upper portion 12 and a lower portion 13, a carbon fiber composite plate 14 is embedded between the upper portion 12 and the lower portion 13, and an outsole 15 is provided on a lower surface of the midsole 11.

The upper portion 12 and the lower portion 13 of the midsole 11 are made of nylon elastomer foam materials, and have ultralow density and excellent rebound resilience, the density is 0.11-0.14g/cm3, the hardness (Shore C) is 42 +/-3, the compression set is 13.6%, and the rebound resilience (Energyreturn) is 80%.

The outsole 15 is made of a casting polyurethane material, and has excellent wear resistance as follows: hardness (Shore A) of 62 and density of 1.20g/cm³Tensile strength of 13.4MPa, elongation at break of 632%, right-angle tear strength of 59.6N/mm, and Akron abrasion (1.61km) of 0.03cm³DIN abrasion 11mm³Yellowing resistance grade 4 and aging resistance grade 4.

As shown in fig. 6, which is a top view of the carbon fiber composite board 14, the carbon fiber composite board 14 includes a first carbon fiber woven cloth laying layer 141, a second laying layer 142, a third laying layer 144, and 3 middle foot reinforcing layers 143, wherein the laying areas of the first carbon fiber woven cloth laying layer 141, the second laying layer 142, and the third laying layer 144 are full palms, and the 3 middle foot reinforcing layers 143 are sequentially stacked in the middle foot area.

The first carbon fiber woven cloth laying layer 141 is made of 3K composite carbon fiber woven cloth. The second ply 142 is made of composite carbon fiber unidirectional cloth, and the ply angle is 90 degrees. The third ply 144 is made of composite carbon fiber unidirectional cloth, and the ply angle is 0 degree. The 3 middle foot reinforcing layers 143 are all made of composite carbon fiber unidirectional cloth, and the layering angles are all 0 degree.

The composite carbon fiber for preparing the composite carbon fiber woven cloth and the composite carbon fiber unidirectional cloth has the performance grade of T700, and the mass ratio of the carbon fiber, the glass fiber, the resin and the auxiliary agent is as follows: 64: 0: 33: 3, wherein the auxiliary agent is curing agent diaminodiphenylmethane and thiomethyl toluene diamine.

The performance test of the shoe sole of this example, in the case of a 9 yard running shoe, the weight of the entire shoe was 177 g.

The bending rigidity test result of the sole is as follows: 0.31 Nm/Deg.

Bending stiffness tests show that the bending stiffness of the sole in this example is 0.31Nm/Deg, which is between 0.2Nm/Deg and 0.6Nm/Deg of the existing commercial shoe, and that the bending stiffness is moderate, which is adapted to the comfort requirements of the sole for the human body.

In addition, the shoe sole in this example has a dry slip coefficient of 1.07 and a wet slip coefficient of 0.78 as measured by the slip resistance test (SATRATM144 level mode). Compared with the prior commercial shoes, the dry type slip coefficient is 0.7-0.9, and the wet type slip coefficient is 0.3-0.4. The shoe sole of example 1 is superior to the conventional commercial shoe in both dry slip coefficient and wet slip coefficient, and thus has improved slip resistance.

Fig. 7 is a schematic view showing the change of the sole during the exercise. In the sole 10 of this application, because the carbon fiber composite sheet 14 includes that at least one deck sets up in the regional well sufficient enhancement layer 143 of well foot, can also adapt to the different regional difference demands to buckling rigidity of sole, guaranteed that the forefoot is kicking the ground in-process, the crooked back takes place for the metatarsal joint of toe, the resilience help sportsman's promotion of carbon fiber composite sheet 14 self deformation is kicked the extension effect to the stability that the back foot falls to the ground provides certain help, and the regional support of well foot of sufficient strength.

In this example, a carbon fiber composite plate 14 is embedded between the upper portion 12 and the lower portion 13, and a grounded outsole 15 is made of a cast polyurethane material. The combination of the embedded carbon fiber composite board 14 and the foaming material of the midsole 11 ensures a linkage type force feedback mechanism opened in the running process, recovers the energy in each step of the user and releases the energy again, thereby ensuring the light and efficient rebound property and providing power for the wearer. The outsole 15 has excellent anti-slip performance and fatigue wear resistance, can be used as a thin outsole, can meet actual sports requirements, effectively reduces the thickness and weight of the sole, realizes the light weight functional appeal of the shoe, and provides better wearing experience for a wearer.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A sole, comprising: set up in the carbon fiber composite sheet of sole, the carbon fiber composite sheet includes that first carbon fiber weaves the cloth and spreads the layer, set up in the second that first carbon fiber weaves the cloth and spreads the layer is spread the layer, set up in the second spreads the sufficient enhancement layer in the at least one deck on the layer, and set up in each the third on the sufficient enhancement layer is spread the layer, wherein:

the first carbon fiber woven cloth laying layer is arranged in the full palm area of the sole;

the second paving layer is laid in the full palm area of the sole;

the third paving layer is laid in the full palm area of the sole; and the number of the first and second groups,

each of the mid-foot reinforcing layers is sequentially laid in the mid-foot area of the sole.

2. The sole of claim 1,

the spreading angle of the composite carbon fiber woven cloth in the first carbon fiber woven cloth spreading layer is 0 degree, 30 degrees, 45 degrees, 60 degrees or 90 degrees, wherein the spreading angle is specifically the included angle between warp yarns or weft yarns of the composite carbon fiber woven cloth and the direction from the heel to the half sole.

3. The shoe sole of claim 2, wherein a ply angle of the composite carbon fiber woven cloth of the first carbon fiber woven cloth ply is 0 degree.

4. The sole of claim 1, wherein said carbon fiber composite plate includes 3 layers of midfoot reinforcing layers arranged in a stacked arrangement.

5. The sole of claim 4, wherein the composite carbon fiber uni-directional cloth ply angle disposed in the midfoot reinforcing layer on the second ply upper surface is 0 degrees;

the composite carbon fiber unidirectional cloth layer angle arranged in the middle foot reinforcing layer on the lower surface of the third layer is 0 degree; and the number of the first and second groups,

and in the middle foot reinforcing layer between the middle foot reinforcing layer on the surface of the second layer and the middle foot reinforcing layer on the surface of the third layer, the layer spreading angle of the composite carbon fiber unidirectional cloth is 0 degree.

6. The sole of claim 1, further comprising a midsole, wherein the carbon fiber composite plate is embedded in or disposed on an upper surface of the midsole.

7. The sole of claim 6, wherein said sole further comprises an outsole disposed on a lower surface of said midsole.

8. The sole according to any one of claims 1 to 7,

the thickness of the first carbon fiber woven cloth laying layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm;

the thickness of the second layer is more than or equal to 0.1mm and less than or equal to 0.5mm, wherein the second layer is made of composite carbon fiber woven cloth;

the thickness of the third layer is more than or equal to 0.1mm and less than or equal to 0.5mm, wherein the third layer is made of composite carbon fiber woven cloth; and the number of the first and second groups,

the thickness of each midfoot reinforcing layer is greater than or equal to 0.1mm and less than or equal to 0.5 mm.

9. The sole of claim 8, wherein the thickness of the first carbon fiber woven cloth ply, the thickness of the second ply, the thickness of the third ply, and the thickness of each of the midfoot reinforcing layers are 0.4 mm.

10. The sole of claim 1,

the first carbon fiber woven cloth laying layer is made of composite carbon fiber woven cloth;

the second layer is made of composite carbon fiber woven cloth, composite carbon fiber unidirectional cloth or glass fiber cloth;

the third layer is made of composite carbon fiber woven cloth, composite carbon fiber unidirectional cloth or glass fiber cloth; and the number of the first and second groups,

each of the middle foot reinforcing layers is made of composite carbon fiber unidirectional cloth.

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