CN211657504U

CN211657504U - Shoes with removable sole

Info

Publication number: CN211657504U
Application number: CN202020007894.8U
Authority: CN
Inventors: 林永佳; 王旭; 杨帆; 刘凡; 余本刚; 伊小琳; 蒋量
Original assignee: Li Ning China Sports Goods Co Ltd
Current assignee: Li Ning China Sports Goods Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-10-13
Anticipated expiration: 2030-01-02

Abstract

The application discloses a foaming material for shoes, a preparation method and the shoes. The upper of the shoe comprises a rollover prevention structure made of the foaming material provided by the embodiment of the application. Because including preventing the structure of turning on one's side on this shoes's the vamp, can provide the supporting role through this structure of preventing turning on one's side. When the anti-rollover structure is subjected to shearing force, the hardness of the material in the anti-rollover structure is rapidly, violently and nonlinearly increased, so that a supporting effect is provided, and the problems in the prior art can be solved.

Description

Shoes with removable sole

Technical Field

The application relates to the technical field of polyester fibers, in particular to a shoe.

Background

In general, the upper has a significant effect on the overall support provided by the footwear to the foot, which can lead to a twisting deformation of the footwear and thus an increased risk of foot spraining. At present, due to the limited material properties of the materials used to form the upper, the shoe generally provides insufficient support, particularly when the foot is subjected to high impact or torsional forces during strenuous activities such as basketball and football, which can greatly increase the risk of spraining the foot. Therefore, how to provide a shoe with sufficient supporting effect is a technical problem to be solved by the present application.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a shoe, which is used for solving the problem that the shoe does not have enough supporting effect on feet in the prior art.

An embodiment of the application provides a shoe, the vamp of which comprises a side-turning prevention structure.

Preferably, the rollover prevention structure is provided at a heel in the upper.

Preferably, the rollover prevention structure is arranged at the heel of the middle side of the upper.

Preferably, the anti-rollover structure is a triangular anti-rollover structure.

Preferably, the rollover prevention structure covers 10% -50% of the area of the upper

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

adopt the shoes that this application embodiment provided, including preventing the structure of turning on one's side on the vamp of these shoes, can provide the supporting role through this structure of preventing turning on one's side. When the anti-rollover structure is subjected to shearing force, the hardness of the material in the anti-rollover structure is rapidly, violently and nonlinearly increased, so that a supporting effect is provided, and the problems in the prior art can be solved.

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 side view of a footwear according to an embodiment of the present application;

FIG. 2 is a schematic view of another side of the footwear according to the embodiments of the present application;

FIG. 3 is a rear view of a shoe provided by an embodiment of the present application;

FIG. 4 is a graph comparing the material properties of comparative examples and an example provided in the examples of the present application;

FIG. 5 is a graph comparing material properties of non-Newtonian fluid gel materials at different mass fractions provided in examples herein.

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.

The embodiment of the application provides a shoe which can be used for solving the problems in the prior art. This vamp of shoes is including preventing the structure of turning on one's side, can provide the supporting role through this structure of preventing turning on one's side to reduce the risk that the vamp warp, and then prevent the foot of spraining etc. that leads to because the vamp warp.

In practical application, according to the stress characteristic of the vamp in the walking or other sports process, the heel of the vamp is generally large in impact force, and the anti-rollover structure can be arranged at the heel of the vamp. Of course, the rollover prevention structure can also be arranged at other positions in the shoe upper, such as the front foot position and the like, according to the stress characteristics of the shoe upper.

When the anti-rollover structure is arranged at the heel of the upper, the anti-rollover structure can be arranged at the heel of the upper, or at the heel of the middle side of the upper.

Of course, when the anti-rollover structure is disposed at the heel of the middle side of the upper, the anti-rollover structure may be disposed at the heel of any one of the inner side and the outer side of the upper. Because the outside of the shoe is generally stressed to be increased in the process of movement, the anti-rollover structure can also be arranged at the heel of the outer side surface of the vamp, so that a supporting effect is provided for the impact force. The heel parts of the two side surfaces in the upper can be provided with the anti-rollover structures, so that a better supporting effect is provided, but the mode that the heel parts of the two side surfaces are provided with the anti-rollover structures generally increases the manufacturing cost, so that in practical application, the heel parts can be selected according to specific requirements.

For example, in the footwear 10 shown in fig. 1-3, the anti-rollover structure 11 is disposed at the heel of the lateral side of the upper. Wherein, the footwear 10 of FIG. 1 is a schematic view of a medial side of the footwear 10; FIG. 2 is a schematic representation of the lateral side of the footwear 10, with the lateral side of the upper including an anti-rollover structure 11 disposed on the heel of the lateral side; figure 3 is a rear view of the footwear 10.

The shape of the anti-rollover structure arranged on the upper of the footwear can be trapezoidal, rectangular or triangular as shown in fig. 1-3, and can also be other shapes. The bottom end of the rollover prevention structure is connected to the sole, and the top end of the rollover prevention structure is close to the top of the shoe.

In addition, for the coverage area of the anti-rollover structure in the inclined plane, the larger the coverage area is, the stronger the support effect provided to the whole shoe is, but the higher the production cost is correspondingly. The coverage area may be configured to accommodate the actual needs, such as the stress characteristics of the footwear during athletic activities, and typically the rollover prevention structure covers 10% to 50% of the area of the upper, such as 10%, 15%, 20%, 25%, 30%, 33%, 37%, 40%, 44%, 48%, 50%, or other values between 10% and 50%.

The above-mentioned shoes that this application embodiment provided, including preventing the structure of turning on one's side on this shoes's the vamp, can provide the supporting role through this structure of preventing turning on one's side. In practical application, the rollover-prevention structure can be prepared by adopting a foaming material of non-Newtonian fluid, and the relation between the shear stress and the shear strain of the foaming material of the non-Newtonian fluid is different from the current common foaming material, and does not obey the Newton's law of mechanics. The anti-rollover structure prepared by the non-Newtonian fluid foaming material is arranged on the vamp, and when the anti-rollover structure is subjected to the action of a shearing force, the hardness of the material in the anti-rollover structure is rapidly, violently and nonlinearly increased, so that a supporting effect is provided.

The principle is that when the non-Newtonian fluid foaming material is not subjected to shearing or impact force, the dispersed phase particles and the dispersed medium form a network structure due to hydrogen bond action, the dispersed phase particles are not interfered with each other, when the non-Newtonian fluid foaming material is subjected to shearing or impact force, the originally formed network structure is gradually disintegrated, the dispersed phase particles form particle clusters due to mutual collision, the fluidity of the non-Newtonian fluid foaming material is reduced, the viscosity of the non-Newtonian fluid foaming material is increased rapidly, the thickening phenomenon is shown, and the hardness of the non-Newtonian fluid foaming material is increased rapidly, violently and nonlinearly. When the shearing force disappears, the particle clusters formed by the shearing or impacting action are gradually decomposed and restored to the original network structure, and the non-Newtonian fluid foaming material also returns to the state before shearing, and is expressed as reversibility. The non-Newtonian fluid foaming material which hardens along with the speed can be used for reducing the risk of the foot spraining at the moment.

For the non-Newtonian fluid foaming material for preparing the anti-rollover structure, the foaming material can be prepared by the following preparation method: adding a base material, a non-Newtonian fluid gel material, a cross-linking agent, an antioxidant, a foaming agent and a filler into an internal mixer according to a preset mass part for mixing to obtain the non-Newtonian fluid foaming material (rubber compound), wherein the preset temperature during mixing can be 90-120 ℃, and the mixing time can be 8-12 minutes.

For example, the base material can be put into an internal mixer to be mixed for 2 minutes at 100 ℃, then the non-Newtonian fluid gel material is added to be mixed for 2 minutes, then the filler, the foaming agent and the antioxidant are sequentially added to be mixed for 4 to 5 minutes, finally the cross-linking agent is added to be mixed for 1 to 2 minutes, and thus the non-Newtonian fluid foaming material is generated.

After the non-Newtonian fluid foaming material is prepared, the non-Newtonian fluid foaming material can be granulated in a double-screw extruder, and the prepared particles are prepared into a rollover prevention structure through an injection molding machine, so that the particles can be used as parts in vamps and are used for improving the supporting effect of shoes.

In addition, the preset mass parts of the base material, the non-Newtonian fluid gel material, the cross-linking agent, the antioxidant, the foaming agent and the filler can be 50-120 parts of the base material, 1-40 parts of the non-Newtonian fluid gel material, 0-3 parts of the cross-linking agent, 0.1-1 part of the antioxidant, 0-5 parts of the foaming agent and 0-20 parts of the filler.

The base material may be 50 parts, 70 parts, 90 parts, 100 parts, 105 parts, 110 parts, 120 parts or other parts between 50 and 120 parts by mass.

In addition, the matrix material may be any one of the following matrix materials or a mixture of a plurality of matrix materials: polyurethane (which may be polyether polyurethane or polyester polyurethane), ethylene vinyl acetate copolymer (EVA), ethylene-octene copolymer (POE), ethylene-Octene Block Copolymer (OBC), thermoplastic polyester elastomer (TPEE), nylon elastomer (PEBA), styrene-butadiene block copolymer (SBS), hydrogenated styrene-butadiene block copolymer (SEBS), Ethylene Propylene Diene Monomer (EPDM), brominated butyl rubber (BIIR), Butadiene Rubber (BR), silicone rubber, Natural Rubber (NR), nitrile rubber (NBR).

For non-newtonian fluid gel materials, this may in particular be a silicone gel or a modified silicone gel. Wherein, the polysiloxane gel can be prepared by, for example, adding 80g of filler such as white carbon black (the specific surface area is 142 square meters per gram) into 400g of a, w-dihydroxy polydimethylsiloxane with the viscosity of about 10pa.s, and then dehydrating and mixing at about 150 ℃ for about 2 hours to prepare a material A; then, 32g of a, w-dihydroxy polydimethylsiloxane, 1.2g of platinum-tetravinyltetrasiloxane and 12g of shell polyvinyl chloride resin were added to 240g of the material A, and isobutane microcapsules were encapsulated in the shell polyvinyl chloride resin, and the mixture was uniformly mixed at normal temperature to prepare a polysiloxane gel.

For the modified silicone gel, it can be prepared by stirring 240g of the silicone gel prepared above with 28.8g of mucomethylhydrogenpolysiloxane at normal temperature to give material B; reacting 6g of boric acid with 100g of hydroxyl-terminated polydimethylsiloxane for 5 hours at 160 ℃ to prepare boric acid modified hydroxyl-terminated polydimethylsiloxane; the obtained boric acid-modified hydroxyl-terminated dimethylsiloxane, 212g of the polysiloxane gel obtained above, and 212g of material B were mixed and subjected to a cross-linking foaming reaction to obtain a modified polysiloxane gel.

The content of the non-Newtonian fluid gel material has an important influence on the performance of the finally generated non-Newtonian fluid foaming material, so that the higher the mass fraction is within a certain range, the better the non-Newtonian fluid performance of the finally generated non-Newtonian fluid foaming material is, but the cost is relatively higher. The non-Newtonian fluid gel material can be 1 part, 3 parts, 5 parts, 9 parts, 15 parts, 20 parts, 23 parts, 27 parts, 30 parts, 35 parts, 38 parts, 40 parts or other parts between 1-40 parts by mass.

The cross-linking agent for preparing the non-Newtonian fluid foaming material is mainly used for generating chemical bonds among linear molecules, so that the linear molecules are connected with each other to form a net structure, and the strength and the elasticity of the foaming material are improved. The cross-linking agent can be any one of the following cross-linking agents or a mixture of a plurality of cross-linking agents: dicumyl peroxide (DCP), benzoyl peroxide, cumene hydroperoxide, dibutyltin dilaurate, stannous octoate, triethanolamine and phosphoric acid.

The cross-linking agent may be present in an amount of 0 part (i.e., no cross-linking agent added), 0.5 part, 1 part, 1.3 parts, 1.5 parts, 2 parts, 2.4 parts, 2.8 parts, 3 parts, or any other amount ranging from 0 to 3 parts, by weight.

The foaming agent for preparing the non-Newtonian fluid foaming material can generate holes in the prepared foaming material, so that the elasticity of the material is increased. In practical applications, the foaming agent may be any one or a mixture of foaming agents as follows: azodicarbonamide (AC); 4, 4' -oxybis-benzenesulfonylhydrazide; n, N' -dinitrosopentamethylenetetramine; sodium bicarbonate; ammonium bicarbonate; water; n-pentane; cyclopentane.

The foaming agent may be present in an amount of 0 part (i.e., no foaming agent added), 0.3 part, 0.7 part, 1 part, 1.3 parts, 1.6 parts, 2 parts, 2.4 parts, 2.8 parts, 3 parts, 3.5 parts, 3.7 parts, 4 parts, 4.5 parts, 5 parts, or any other amount ranging from 0 to 5 parts by mass.

The filler for preparing the non-Newtonian fluid foaming material can be any one of the following fillers or a mixture of a plurality of fillers: magnesium hydroxide; calcium carbonate; talc powder; silicon dioxide; wollastonite. By adding the filler, the performance of the composite material can be improved, and the material cost can be reduced. It can reduce shrinkage of foaming material, and improve dimensional stability, surface smoothness, and smoothness or matt property of product

Of course, the mass fraction of the filler may be 0 parts (i.e., no filler added), 1 part, 3 parts, 3.7 parts, 8 parts, 10 parts, 13 parts, 16 parts, 19 parts, 20 parts, or other fractions between 0 and 20 parts.

The antioxidant for preparing the non-Newtonian fluid foaming material can increase the oxidation resistance of the foaming material. The antioxidant is specifically any one of the following antioxidants or the mixture of a plurality of antioxidants: an antioxidant 264; an antioxidant 1010; antioxidant 1076 and water stabilizer monocarbodiimide; polycarbodiimide.

The filler may be present in an amount of 0.1 part, 0.2 part, 0.3 part, 0.5 part, 0.8 part, 1 part, or any other amount of 0.1 to 1 part by mass.

The properties of the non-newtonian fluid foams provided in the examples of the present application can be illustrated with reference to the comparative examples, in which no non-newtonian fluid gel material is added, and specific examples.

Comparative example: 100 parts of base material (specifically, 60 parts of EVA, 15 parts of POE, 25 parts of SEBS), 0.2 part of antioxidant 1010, 2.2 parts of AC, 5 parts of talcum powder, 5 parts of white carbon black (silicon dioxide) and 0.8 part of brominated butyl rubber. By using the preparation method provided by the embodiment of the application, the materials with the above proportion are used to generate the foam material 1.

Example 1: 100 parts of base material (specifically, 60 parts of EVA, 15 parts of POE, 25 parts of SEBS), 15 parts of modified polysiloxane gel, 0.2 part of antioxidant 1010, 2.2 parts of AC, 5 parts of talcum powder, 5 parts of white carbon black (silicon dioxide) and 0.8 part of brominated butyl rubber. By using the preparation method provided by the embodiment of the application, the materials with the above ratio are used to generate the foam material 2.

The foam 2 is different from the foam 1 in that 15 parts of modified silicone gel is added.

The physical indexes of the foam material 2 are as follows: density 0.20g/cm³Hardness (Shore C) 50.

The foaming material 1 is made into a rollover prevention structure and is arranged at a heel in the vamp; the foaming material 2 is made into a rollover prevention structure in the same way and is arranged at the heel of the shoe upper. The mechanical properties of the shoes made of the two foams when subjected to the same external impact are shown in fig. 4. In fig. 4, the abscissa is the time of impact from an external force and the ordinate is the supporting force provided.

As can be seen from FIG. 4, the rollover prevention structure made of the foam material 1 achieves the maximum supporting force within 15-20 milliseconds when being impacted by external force, and the maximum supporting force is about 700 newtons. The rollover prevention structure prepared from the foaming material 2 achieves the maximum supporting force within 5-10 milliseconds when being impacted by external force, and the maximum supporting force is greater than 1000 newtons.

Therefore, the rollover prevention structure prepared by the foaming material 2 can reach the maximum supporting force more quickly, and the maximum supporting force is larger than that of the rollover prevention structure prepared by the foaming material 1, so that the supporting effect is better.

Example 2: 100 parts of base material (specifically, 60 parts of EVA, 15 parts of POE, 25 parts of SEBS), 20 parts of modified polysiloxane gel, 0.2 part of antioxidant 1010, 2.2 parts of AC, 5 parts of talcum powder, 5 parts of white carbon black (silicon dioxide) and 0.8 part of brominated butyl rubber. By using the preparation method provided by the embodiment of the application, the materials with the above proportion are used to generate the foaming material 3.

The foamed material 3 is different from the foamed material 1 in that 20 parts of modified polysiloxane gel is added, and the foamed material 3 is different from the foamed material 1 in that the added parts of modified polysiloxane gel are different.

The foaming material 2 is made into a rollover prevention structure and is arranged at a heel in the vamp; the foaming material 3 is made into a rollover prevention structure in the same way and is arranged at the heel of the shoe upper. The mechanical properties of the shoes made of the two foams when subjected to the same external impact are shown in fig. 5. In fig. 4, the abscissa is the time of impact from an external force and the ordinate is the supporting force provided.

As can be seen from FIG. 5, the rollover prevention structure made of the foam material 2 achieves the maximum supporting force within 5-10 milliseconds when being impacted by external force, and the maximum supporting force is greater than 1000 newtons. The rollover prevention structure prepared from the foaming material 3 achieves the maximum supporting force within 5-10 milliseconds when being impacted by external force, and the maximum supporting force is more than 2500 Newton

Therefore, the rollover prevention structure prepared by the foaming material 3 and the rollover prevention structure prepared by the foaming material 3 reach the maximum supporting force at the same time, but the maximum supporting force of the rollover prevention structure prepared by the foaming material 3 is larger than that of the rollover prevention structure prepared by the foaming material 2, so that the supporting effect is better, and the performance of the rollover prevention structure can be improved by adding the non-Newtonian fluid gel material.

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

1. The shoe is characterized in that the vamp of the shoe comprises a side-turning prevention structure, and the side-turning prevention structure is arranged on the inner side face or the outer side face of the vamp.

2. The shoe of claim 1, wherein the anti-rollover structure is disposed in the upper at a heel.

3. The shoe of claim 2, wherein the anti-rollover structure is disposed at a heel of a medial side of the upper.

4. The shoe of claim 1, wherein said rollover prevention structure is specifically a triangular rollover prevention structure.

5. The shoe of claim 1, wherein said rollover prevention structure covers between 10% and 50% of the area of said upper.