CN111616463A - Sole and sports shoes applying non-Newtonian fluid material - Google Patents

Abstract

The application relates to the technical field of footwear products, and provides a sole and sports shoes of using non-Newtonian fluid material, the sole include the insole, the insole is provided with inhales the shake part, it is non-Newtonian fluid polyurethane part to inhale the shake part. The application fully utilizes the excellent shock absorption performance of the non-Newtonian fluid, and combines the non-Newtonian fluid with polyurethane to manufacture the shock absorption component for the sole. The sole provided by the application comprises the non-Newtonian fluid polyurethane shock-absorbing component, the characteristic that the non-Newtonian fluid is instantly hardened when being impacted is fully reserved, the shoe is basically not deformed at the moment of contacting the ground, and the perfect shape of contacting the ground can be kept, so that the stable contact of all joints of the foot of a user is realized, and the damage probability of knee joints and ankle joints is better reduced. The detection data show that the shock absorption effect of the non-Newtonian fluid polyurethane part is improved by more than 15% compared with that of the existing cushioning material.

Description

Sole and sports shoes applying non-Newtonian fluid material

Technical Field

The application relates to the technical field of footwear products, in particular to a sole and a sports shoe which are made of non-Newtonian fluid materials.

Background

In the process of running and other sports, due to the action of inertia, at the moment that the bottom of a sporter touches the ground, the ground can generate counter impact force (generally 3-5 times of the weight of a human body) on a sole, and the huge impact force is very easy to cause certain damage to the knee joint and/or the ankle joint of the sporter. Shoes are foot articles for protecting feet and other parts from being injured, wherein the cushioning or shock absorption function of the shoes is very important and necessary.

At present, a plurality of shoes on the market adopt the improved technology of the shock absorption performance of the sole. One method is to use high-elasticity material to make the cushioning insole; in another method, various cushioning structures are used to achieve the cushioning function of the sole. For example, some sports brands have introduced air cushion structures, honeycomb cushioning structures, etc., which are manufactured by using auxiliary structures to form a sole structure with cushioning function.

However, the existing footwear cushioning technologies mainly have the following limitations: the existing cushioning structure and material achieve the purpose of cushioning by generating deformation and prolonging the time of impact when being impacted; due to the deformation of the cushioning structure and the material, the foot is instable at the moment of touching the ground, so that the probability of damaging the knee joint and the ankle joint is increased. Therefore, the cushioning function of the existing footwear needs to be improved.

Disclosure of Invention

In view of this, this application provides a sole and sports shoes of using non-newton fluid material, and the sole and sports shoes that this application provided have excellent and inhale the shake effect, do benefit to the damage that reduces the sports impact to user's knee joint and ankle joint.

The application provides a sole of using non-Newtonian fluid material, including the insole, the insole is provided with inhales the shake part, it is non-Newtonian fluid polyurethane part to inhale the shake part.

Preferably, the shock-absorbing component is arranged at the heel part of the midsole; the shock absorbing member is a sheet member.

Preferably, the shock-absorbing member has an average thickness of not less than 10 mm; the shock-absorbing member has an area smaller than the total area of the heel portion of the midsole.

Preferably, the shock absorbing member is provided at a mid-waist portion and/or a sole portion of the midsole.

Preferably, the shock-absorbing member is a sheet member having an average thickness of not less than 2 mm.

Preferably, the sole comprises an outsole composited with a midsole; the shock absorption component is positioned between the middle sole and the outsole and is attached to the surface of the middle sole close to the ground.

Preferably, the shock absorbing element is exposed directly on the sole or is wrapped by an elastic layer.

The present application provides a sports shoe comprising a sole as described hereinbefore.

Preferably, the sports shoe is a shoe for professional functional sports, wherein the shock-absorbing member has a hardness of 35-45 degrees ask C.

Preferably, the sports shoe is a shoe for daily leisure, wherein the hardness of the shock-absorbing member is 25-35 degrees asker c.

Compared with the prior art, the non-Newtonian fluid shock absorption device has the advantages that the excellent shock absorption performance of the non-Newtonian fluid is fully applied, and the non-Newtonian fluid shock absorption device is combined with polyurethane to manufacture and form the shock absorption component for the sole. The sole provided by the application comprises the non-Newtonian fluid polyurethane shock-absorbing component, the characteristic that the non-Newtonian fluid is instantly hardened when being impacted is fully reserved, the shoe is basically not deformed at the moment of contacting the ground, and the perfect shape of contacting the ground can be kept, so that the stable contact of all joints of the foot of a user is realized, and the damage probability of knee joints and ankle joints is better reduced. The detection data show that the shock absorption effect of the non-Newtonian fluid polyurethane part is improved by more than 15% compared with that of the existing cushioning material.

Drawings

FIG. 1 is a schematic view of a sole structure according to a first class of embodiments of the present application;

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

FIG. 3 is a schematic view of the structure of a sole according to a third embodiment of the present application;

FIG. 4 is a schematic view of a midsole provided in accordance with example 3 of the present application;

fig. 5 shows the results of the plantar pressure test of the sole of the shoe according to example 3 of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other examples, which may be modified or appreciated by those of ordinary skill in the art based on the examples given herein, are intended to be within the scope of the present invention.

The application provides a sole of using non-Newtonian fluid material, including the insole, the insole is provided with inhales the shake part, it is non-Newtonian fluid polyurethane part to inhale the shake part.

The application provides a sole has excellent and inhales the shake effect, does benefit to the damage that reduces the motion and assaults user knee joint and ankle joint.

In this application, the sole includes the insole, and it is the sheet part that the upper surface can cover the sole portion, mainly plays the effect to foot support, bradyseism. According to the position corresponding to the foot, the insole extends from the toe to the arch part to the heel, and is divided into a half sole, a middle waist and a heel part. The half sole part is corresponding to the front end of the foot arch; the middle waist part corresponds to the whole arch part of the foot, and the heel part corresponds to the part from the tail end of the arch to the heel. Wherein the midsole is provided with a non-Newtonian fluid polyurethane component; the member is a shock absorbing member in the present application, and the main components are a non-newtonian fluid material and a polyurethane material. The non-Newtonian fluid shock absorption sole fully utilizes the excellent shock absorption performance of the non-Newtonian fluid, is combined with the polyurethane material to manufacture a shock absorption part, and is applied to the sole; the component can absorb more than 70% of the impact force during the movement, thereby reducing the damage of the knee joint and the ankle joint of the user caused by the movement impact.

The non-newtonian fluid material according to the embodiments of the present application may be prepared by a method conventional in the art, or may be a commercially available material, and the composition thereof is not particularly limited. As for a method for producing a non-newtonian fluid material, reference is made to a method for producing a shear thickening fluid in chinese patent document No. ZL201410009134, which comprises the steps of:

uniformly mixing a non-volatile liquid medium and a volatile solvent to obtain a mixed solution;

adding the nano particles into the mixed solution, stirring and dispersing to form emulsion; and removing the volatile solvent in the emulsion to obtain the shear thickening fluid.

In some embodiments, the mass ratio of the non-volatile liquid medium to the volatile solvent is between 1/2 and 1/6.

In some embodiments, the non-volatile liquid medium is at least one of ethylene glycol, polyethylene glycol.

In some embodiments, the volatile solvent is at least one of ethanol, ethyl acetate.

In some embodiments, the nanoparticles are nanosilica particles.

In some embodiments, the dispersing is ultrasonic dispersing, and the ultrasonic dispersing time is 1-2 h.

In some embodiments, wherein the emulsion is subjected to a vacuum for 2-4 hours to remove the volatile solvent to obtain the shear thickening fluid.

In some embodiments, the mass fraction of nanosilica in the shear thickening fluid is between 50% and 80%.

The preparation method is characterized in that the nano particles are used as the solid phase component of the STF liquid, a non-volatile liquid medium and a volatile diluent solvent are adopted to prepare a mixed solution, the nano particles are dispersed into the mixed solution under the stirring and ultrasonic action to form an emulsion, and then the diluent solvent is removed under the vacuum condition to obtain the uniform, transparent and stable STF liquid. Illustratively, the viscosity of the resulting non-Newtonian fluid material may be 50000Pa · s (25 ℃).

The non-Newtonian fluid material is applied to the polyurethane elastic material in the embodiment of the application, namely the shock-absorbing part made of the non-Newtonian fluid polyurethane composition is formed, the preparation method is not particularly limited, and the conventional process in the field is adopted. In some embodiments of the present application, the non-newtonian fluid polyurethane shock absorbing member is specifically prepared as follows:

material getting → mold preheating, material pouring in a A, B tank → preparation, stirring, circulation → testing machine, adjusting A, B material pouring amount → pre-pouring, spraying release agent → pouring; and (5) detecting the first part, if the part is qualified, carrying out batch production, and if the part is not qualified, returning to adjust A, B material pouring amount. Carrying out process inspection during batch production, if the parts are qualified, carrying out trimming and punching, and finally carrying out finished product detection/end part detection; if the part is not qualified, the pouring amount of the material is adjusted A, B again.

The preparation process mainly comprises the following steps: the method comprises the steps of preparing a mould, feeding raw materials, debugging A and B materials, feeding auxiliary materials and pouring a product. Wherein the mold preparation comprises: setting the temperature of the drying tunnel to be 45-55 ℃ in summer and 55-70 ℃ in winter; after the temperature of the drying tunnel is stable, the mold needs to be kept warm for l hours; the normal molding temperature range of the die is 40-55 ℃, and after the heat preservation time of the die is reached, a temperature measuring gun can be used for testing. In addition, each mold must be inspected: whether the mould die cavity is cleaned up, whether the mould hasp is normal, whether the hinge opens and shuts normally, the face of mould has no damage, whether the mould model corresponds etc..

After the mold is ready, the embodiment of the application is charged when the A, B bucket level drops below the puddler. The material A is polyalcohol, and usually adopts a mixture containing polyether polyol, a catalyst and the like; the method is mainly used for preparing polyurethane foam plastics, polyurethane damping materials and the like. In the molecular structure of polyether polyol, the ether bond cohesive energy is low, and the polyether polyol is easy to rotate, so that the prepared polyurethane material has good flexibility, excellent hydrolysis resistance, easy mutual solubility with isocyanate, an auxiliary agent and other components, and excellent processing performance. The non-Newtonian fluid and the siloxane compound are contained in the material A of the embodiment of the application, and the siloxane compound is at least one of dimethyl siloxane, methyl phenyl siloxane, ethyl siloxane, hydroxyl-containing siloxane, phenyl siloxane, hydrogen-containing siloxane and ethoxy siloxane. The material B is isocyanate, preferably MDI (diphenylmethane diisocyanate), which is an important isocyanate for synthesizing the polyurethane material, the molecular structure contains two benzene rings and has a symmetrical molecular structure, and the prepared polyurethane material has good mechanical properties.

In some embodiments of the present application, a vacuum pump is used to feed a barrel of 150kg to 250kg of material, and one material is added at a time. Before feeding, closing the pipeline circulation and all valves (including a vent valve), and only opening the vacuum valve; vacuumizing, and turning off the vacuum pump when the pointer of the vacuum meter points to-10 MPa; and then cleaning the tail end of the feeding pipe, putting the feeding pipe into a raw material barrel, opening a feeding valve, extracting the raw material with the target weight, and closing the feeding valve. In other embodiments, the material can be directly fed from the top hole of the tank body for 10 kg-30 kg of raw material. And after the material B is added, vacuumizing the material B, opening an emptying valve (after moisture is absorbed by a drying agent) to remove vacuum, and ensuring the drying of the material B. After the material A is added, color paste (which can be prepared) is optionally added, stirring is carried out for 10 minutes (all valves except an air release valve are kept closed), and then a pipeline valve of the material A is opened to circulate for 10 minutes so as to facilitate sample preparation.

The method for debugging the materials A and B comprises the following steps: opening valves of all circulating pipelines, tank stirring and an air compressor; and after the material A and the material B run smoothly in a circulating way and the pipeline pressure is normal without alarming, debugging the pre-pouring weight ratio of the two main materials. Wherein the pre-pouring time is 2 s; and respectively setting the frequency and the pre-pouring quality of the material A motor and the frequency and the pre-pouring quality of the material B motor. Only one material (A material or B material) is debugged each time, the materials are continuously poured and weighed for three times, and the frequency conversion parameters of A, B material valves are modified simultaneously, so that the average mass reaches the standard in the process parameters, namely the requirement is met. A. And after the two materials B meet the requirements, opening two pouring valves simultaneously for pre-pouring once, putting the poured product into a disposable plastic cup, observing the foaming state and color, and evaluating and comparing to obtain normal production.

Besides the A, B main materials, the raw materials of the embodiment of the application also comprise matched auxiliary materials, such as a solvent, a release agent and the like, and the method comprises an auxiliary material feeding step. Among them, the release agents are classified into oil-based and water-based types. In some embodiments, an oily release agent is used, and the process of formulating the oily release agent comprises: firstly, 10-20 kg of solvent oil is taken in a blue barrel (about 2/3 volume, the barrel cannot be filled too fully), and then pure oily mold release agent is accurately weighed, wherein the weight ratio of the mold release agent to the solvent oil is 1: 60; and adding a sufficient amount of release agent into the weighed solvent oil cup, fully stirring, and rinsing for multiple times to ensure that no undissolved release agent is remained in the cup. In other embodiments, the water-based release agent is uniformly mixed with tap water according to the weight ratio of 1: 1.

When adding the auxiliary material, this application embodiment will wash jar release earlier, then carry out the cleaner with dedicated kettle of cleaner and funnel and reinforced, carry out the spraying of release agent again. And (3) for spraying the oily release agent, uniformly shaking the release agent solution prepared in the blue barrel, putting the mixture into a metal tank, connecting an air pipe, adjusting the spraying amount, spraying the mixture to a direction (90 degrees) vertical to the die surface of the die, ensuring that the release agent is fully and uniformly coated on the front, back, left and right sides of the upright post of the die, and keeping the spraying path in a zigzag shape from top to bottom. The spraying amount of the metal mold is required to be as follows: the spraying route keeps a zigzag shape from top to bottom, and the surface is not dried and accumulated liquid and is fully wetted after one time. The spraying amount of the resin mold is required to be as follows: the spraying route keeps a zigzag shape from top to bottom, the spraying is carried out twice, the surface is not dried, liquid is not accumulated, and the surface is fully wetted; the surrounding exhaust slots need to be added one to two times. The release agent solution should be spread over the entire mold surface (including the surrounding venting grooves), and the spray time is adjusted according to the size of the mold surface and the complexity of the mold cavity. For spraying the water-based release agent, the operation method is similar to that for spraying the oil-based release agent, and the spraying needs to be uniformly sprayed on the whole surface in a zigzag shape; and after spraying, blowing and dispersing the residual accumulated liquid by using an air gun. The spraying amount requirement is as follows: the resin mould is sprayed twice, the metal mould is sprayed once, and the surface is wetted. After the preparation of the oily mold release agent solution and the aqueous mold release agent solution is finished, if the standing time is long (more than 15min), the oily mold release agent solution and the aqueous mold release agent solution are required to be shaken up before being subpackaged into metal cans again or being directly sprayed, and then the next operation is carried out.

In the embodiment of the present application, the step of pouring the product includes: setting a product pouring station and pouring time; and determining whether the temperature of each product and the corresponding mould is within a normal forming temperature range according to the requirement, and checking whether the model of the product to be produced corresponds to the mould one by one and whether the mould sequence corresponds to the pouring station one by one. And (5) checking whether the release agent is sprayed or not and whether the spraying amount meets the operation requirement or not. Checking whether the circulation of the A and B material pipelines is normally started; and confirming whether the product model and the process parameters are accurate again. Opening A, B material pouring valve, pre-pouring three times, and pouring product after average weight reaches standard. Pouring a first mold product according to a preset station, starting a production line turntable motor, closing a lock catch immediately after pouring of each mold is completed, putting all the molds into a drying tunnel for curing, loosening the lock catch of the mold after a specified time is reached, taking out the product, weighing gross weight, weighing net weight after trimming, checking color, shape size and weight, and checking whether the cooled hardness and the technical parameters of the product are within a normal range. If the technical parameters are not in the normal range, the debugging is needed again, and the production can be continued after the normal operation. After the first piece is confirmed to be abnormal, normal production is carried out, and the process of technical parameter indexes is patrolled; and transferring the newly demoulded product to a trimming area for the next operation.

After the poured semi-finished product of the product is obtained, trimming and punching operations are carried out to obtain a finished shock-absorbing component.

The machine for trimming is an edge trimmer commonly used in the field, and can rapidly trim redundant edges and corners of various products. After the product is molded and taken out from the mold, a small amount of overflowed leftover materials are often contained, so that the product needs to be trimmed, and a perfect arc line is created according to the appearance size characteristics of a standard product. Adjusting the size of the knife edge distance according to the thickness and the size of the leftover material of the demolding product; generally, the softer, thinner and smaller the corners, the smaller the knife edge spacing. By carefully referring to the external dimension and radian of the standard product, the burr left after trimming cannot exceed 1mm, and the excessive trimming dimension cannot exceed 1mm compared with the standard product. Considering that the product appearance is arc special-shaped (a small amount of square is also provided), under the condition that the rotation speed and the frequency of the blade are not changed, the proper distance between the blade and the edge is judged according to the product appearance, and the blade can not be too close to the edge or too far away from the edge; the protector of special appearance needs to utilize the scissors to carry out manual deburring.

In addition, the tool used in the punching operation of the embodiment of the present application is a puncher commonly used in the field. The protective clothing generally has a hollow round hole shape, and the aperture is divided into a plurality of sizes; when punching, all the redundant leftover materials in the holes need to be punched, and the residual burrs are not more than 1 mm. The punching method is simple, and a puncher with a proper aperture is selected for punching and penetrating. The puncher needs to be polished in good time, and the cutting edge of the punching end is kept sharp.

The embodiment of the application applies the prepared non-Newtonian fluid polyurethane component to the sole product, which is completely different from the existing cushioning technology. The application utilizes the instant hardening performance of non-Newtonian fluid, better reduces the sprain risk caused by the instant shoe deformation caused by impact, and utilizes the characteristic that the shoe absorbs huge impact energy, thereby reducing the damage probability to knee joints and ankle joints in motion.

Referring to FIG. 1, FIG. 1 is a schematic structural view of a sole according to a first embodiment of the present application, including top view and portions A-A1/B-B1 thereof. Wherein 10 is a midsole, and 101 is a shock absorbing member. When the shock absorption device is applied specifically, the shock absorption part can be arranged at the heel part of the insole of the shoe to perform shock absorption protection; as shown in fig. 1, a shock-absorbing member 101 is provided at the heel of the midsole 10.

The overall structure, hardness, material and the like of the midsole 10 are not particularly limited in the embodiment of the application; the insole can be the foaming insole of main part materials such as ethylene vinyl acetate copolymer (EVA), Polyurethane (PU) or nylon, mainly sets up near ground one side with the mode of brush gum laminating inhale shake the part. Generally, the shock absorbing member 101 is a sheet-like member; the projection shape in fig. 1 is only schematic, and may actually be changed according to design requirements, such as a circle, an ellipse, a ring, an arc, an irregular shape, and the like. In order to ensure sufficient shock-absorbing effect, the average thickness of the non-Newtonian fluid polyurethane shock-absorbing member is not less than 10 mm; moreover, the maximum thickness of the part is not more than half of the thickness of the corresponding midsole part, so that the comprehensive performance of the shoe is guaranteed. Further, the shock-absorbing member 101 has an area smaller than the total area of the heel portion of the midsole 10, i.e., it is not preferable to completely cover the heel portion.

Referring to fig. 2-3, the structure of the sole in the second and third embodiments of the present application is shown. According to some embodiments of the application, the shock absorption part is arranged at the middle waist part of the insole of the shoe for shock absorption protection; as shown in fig. 2, a shock absorbing member 201 is provided at the middle waist of the midsole 20. In other embodiments of the application, the shock absorption part is arranged at the half sole part of the insole of the shoe to perform shock absorption protection; as shown in fig. 3, a shock absorbing member 301 is provided at the front end of the midsole 30.

In the above embodiments, the midsole 20 and the midsole 30 may be made of midsole materials and structures commonly used in the art. The shape of the shock absorbing member in fig. 2 and 3 is also only illustrative, and is not particularly limited. The shock absorbing member is generally a sheet member; when the component is arranged at the front sole and the middle waist of the shoe, the performance requirements of elasticity and rigidity need to be considered at the same time, and the average thickness of the non-Newtonian fluid polyurethane shock-absorbing component is not less than 2 mm. Moreover, the maximum thickness of the part is not more than half of the thickness of the corresponding midsole part, so that the comprehensive performance of the shoe is guaranteed. Further, the shock absorbing member is not preferably provided at a portion corresponding to the toes, and can cover as much area as possible of the half sole and/or the middle waist.

The sole of the present embodiment also includes an outsole, which is incorporated into the midsole, typically a wear-resistant rubber layer for direct-contact application. The shock absorption component is positioned between the middle sole and the outsole and is attached to the surface of the middle sole close to the ground through glue brushing. In a specific embodiment of the present application, the midsole has a hardness of between 35-55ASKER C. Some embodiments of the present application utilize Thermoplastic Polyurethane (TPU) or rubber to wrap the shock absorbing member with an elastomeric layer to improve durability. In other embodiments, the non-Newtonian fluid polyurethane component is exposed directly on the sole to highlight the special appearance effect of the material. Preferably, the elastic layer is used for wrapping the shock absorption part, so that the shock absorption part is good in durability.

The present application provides a sports shoe comprising a sole as described hereinbefore. The sports shoes with the soles have good motion protection effect on joints of feet and the like of users.

In some embodiments of the present application, the athletic footwear is footwear for professional functional activities, such as professional basketball shoes, running shoes, and general training athletic shoes; wherein the hardness of the shock-absorbing part is preferably 35-45 degrees ASKER C. In other embodiments of the present application, the athletic shoe is a shoe for everyday casual activities, also known as a casual shoe, an athletic casual shoe, a sneaker, or the like; wherein the shock-absorbing member preferably has a hardness of 25 to 35 degrees ASKER C.

The application has no special limitation on the preparation of the midsole, the outsole and the sports shoe; the hardness of the middle sole is generally between 35 and 55ASKER C, and the material can be foamed materials such as EVA, PU and the like. The shock absorption part is mainly attached to the sole in a glue brushing mode, and a treating agent can be brushed firstly in the attaching process to enhance the attaching strength; meanwhile, heating at a certain temperature is matched to ensure the bonding strength.

In the application, the non-Newtonian fluid polyurethane component has excellent shock absorption performance, and the shock absorption performance of materials with different hardness is excellent even under the condition of hardening at low temperature. This application is applied to the bottom of shoes with the shock-absorbing characteristic of this part, and reducible motion is strikeed the harm to knee joint and ankle joint.

For further understanding of the present application, the sole and the athletic shoe provided by the present application using the non-Newtonian fluid material are specifically described below with reference to examples.

EXAMPLE 1 shock absorbing Member preparation

The non-Newtonian fluid material is prepared according to the method of the embodiment in the patent literature, the main component is inorganic micro-nano particles, and the inorganic micro-nano particles are SiO₂The particle size range of the inorganic micro-nano particles is 50-900 nm; the viscosity of the non-Newtonian fluid is 50000 pas at 25 ℃.

The material A is a mixture containing polyether polyol, a catalyst and the like, wherein the non-Newtonian fluid and dimethyl siloxane are contained in the mixture; the material B is MDI. A. The total pouring amount of the material B: 5-30 g (adjusting the pouring amount according to different part size specifications); the casting time is 1-6 seconds. The preparation process comprises the following steps:

material getting → mold preheating, material pouring in a A, B tank → preparation, stirring, circulation → testing machine, adjusting A, B material pouring amount → pre-pouring, spraying release agent → pouring; and (5) detecting the first part, if the part is qualified, carrying out batch production, and if the part is not qualified, returning to adjust A, B material pouring amount. Carrying out process inspection during batch production, if the parts are qualified, carrying out trimming and punching, and finally carrying out finished product detection/end part detection; if the part is not qualified, the pouring amount of the material is adjusted A, B again.

The thickness of the non-newtonian fluid polyurethane part prepared was 10mm, the shock absorption properties of which were tested according to standard methods of EN1621-1:2012 as follows:

TABLE 1 shock absorption Properties at different temperatures for non-Newtonian fluid polyurethane parts of example 1 of the present invention

Remarking: the impact force value is the impact force transmitted to the chopping board after the energy is absorbed by the material, the unit is kN, and the smaller the impact force value is, the better the energy absorption effect of the material is.

non-Newtonian fluid polyurethane parts of other hardness specifications can also be prepared according to the method of example 1; for example, the hardness of this member (thickness: 9.5mm) at normal temperature was 45C.

When the impact energy is 50J and the original impact force is 80kN, the impact force value of the part is 24.57kN through testing; the impact force value of the existing shock-absorbing material part is generally over 45kN, for example, the impact force value of a general molded part 55C is 49.65kN (thickness 9.5mm), the impact force value of a general molded part 54C is 46.76kN (thickness 9.5 mm); a water chestnut-level cushioning component 45C with an impact force value of 47.88 (thickness 9.7 mm); 50C of fatigue-resistant EVA part, and the impact force value is 46.07kN (the thickness is 9.6 mm); flash foam part 45C, impact value 46.21kN (9.5 mm); rebound foam part 50C, impact force value 45.45kN (thickness 9.8 mm).

Example 2 sole Structure for application

The shock-absorbing member (hardness 40C) prepared in example 1 was attached to the heel of the EVA foamed midsole; wherein, the hardness of the middle sole is 55C, the thickness of the middle sole is shown in figure 4, the maximum thickness of the half sole is 15.71mm, and the maximum thickness of the heel is 28.06 mm.

The midsole was assembled into a conventional shoe for plantar pressure testing, see fig. 5 for the test results. In fig. 5, ESA represents a shoe sole having a shock-absorbing member, RF is a cushioning material, full name is REBOND FOAM, and the thickness of the test sample, etc. are the same as ESA. The experimental equipment for testing is a novel plantar pressure testing instrument, and the testing method is that an insole with a sharp sensor is placed in a shoe, then a subject moves at a constant speed, and the plantar stress condition during movement is recorded.

From the data tested in fig. 5, it can be seen that, at the moment of impact, the sole of the left foot: the ESA had an impact value of 248.75KPa, and the RF was 251.75 KPa; sole of right foot: the impact value of EAS is 252.5KPa, and RF is 258.75KPa, so the shock-absorbing effect is improved to a little that this application sole is the impact force in the twinkling of an eye lower.

According to the embodiment, the sole comprises the non-Newtonian fluid polyurethane shock-absorbing component, the characteristic that the non-Newtonian fluid is instantly hardened when being impacted is fully reserved, the shoe is basically not deformed at the moment of contacting the ground, and the perfect ground contact shape can be kept, so that the stable ground contact of all joints of the foot of a user is realized, and the damage probability of knee joints and ankle joints is better reduced.

The above description is only a preferred embodiment of the present invention, and it should be noted that various modifications to these embodiments can be implemented by those skilled in the art without departing from the technical principle of the present invention, and these modifications should be construed as the scope of the present invention.

Claims (10)

1. A sole using a non-Newtonian fluid material comprises a midsole, and is characterized in that the midsole is provided with a shock absorption part, and the shock absorption part is a non-Newtonian fluid polyurethane part.

2. The sole according to claim 1, wherein said shock absorbing element is disposed in the heel region of the midsole; the shock absorbing member is a sheet member.

3. The sole according to claim 2, wherein said shock-absorbing member has an average thickness not lower than 10 mm; the shock-absorbing member has an area smaller than the total area of the heel portion of the midsole.

4. The sole of claim 1, wherein said shock absorbing element is disposed in a mid-sole waist region and/or a forefoot region.

5. The sole according to claim 4, wherein said shock-absorbing member is a plate-like member having an average thickness not less than 2 mm.

6. The sole according to any one of claims 1 to 5, wherein the sole comprises an outsole laminated to a midsole; the shock absorption component is positioned between the middle sole and the outsole and is attached to the surface of the middle sole close to the ground.

7. A sole as claimed in any one of claims 1 to 5, wherein the shock absorbing member is exposed directly on the sole or is wrapped by an elastomeric layer.

8. An athletic shoe comprising the sole according to any one of claims 1 to 7.

9. Sports shoe according to claim 8, wherein said shoe is a shoe for professional functional sports, wherein the hardness of the shock absorbing element is 35-45 degrees ask C.

10. The sports shoe as claimed in claim 8, wherein the sports shoe is a shoe for daily leisure, wherein the hardness of the shock-absorbing member is 25-35 degrees ASKER C.

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