CN112602986B - Sole structure shocks resistance based on cat foot pad is bionical - Google Patents
Sole structure shocks resistance based on cat foot pad is bionical Download PDFInfo
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
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Abstract
The invention discloses an impact-resistant sole structure based on cat foot pad bionics, which can play a good buffering role by embedding a three-dimensional structure based on cat foot pad bionics in a common substrate structure, has lighter overall weight and can ensure higher flexibility; the ellipsoidal hollow compartment in the central body of the three-dimensional structure is completely closed, the deformation of the ellipsoidal hollow compartment has self-adaptability, and the ellipsoidal hollow compartment can automatically recover the original state after the external force is dissipated, so that the repeatable use times are increased, and the service life is prolonged; the overall shape, the composition materials, the thickness of each layer, the shape, the number, the size and the like of the hollow compartments of the three-dimensional structure based on the cat foot pad bionics are preferably configured, so that the buffering performance of the three-dimensional structure based on the cat foot pad bionics can be flexibly adjusted, and the three-dimensional structure is suitable for different application fields; the raw material cost of above-mentioned sole structure is cheap, and easily processing can directly fill in other existing equipment based on cat foot pad bionic spatial structure, satisfies the demand of shocking resistance, convenient to use.
Description
Technical Field
The invention relates to the technical field of bionic impact-resistant structures, in particular to an impact-resistant sole structure based on the bionic cat-foot pad.
Background
When a person jumps down from a high place to land, such as an airborne parachute, the lower limbs of the person are easily damaged, and most of the damage is caused by overlarge ground reaction force on the soles in the landing process.
At present, the lower limb injury protection technology during high-altitude jump landing mainly focuses on rigid and semi-rigid knee pads and ankle protection equipment, the main action principle is that the activity of joints is limited, so that the knee pads and ankle protection equipment play a role in protection, but the protection effect has certain controversial property, the established action is not favorably finished, and the ground impact force borne by soles is not directly reduced.
The Chinese patent application No. 200910199886.6 discloses a shock-resistant shoe worn by an operator in autumn and winter or in cold climate environment, wherein a shock-resistant composite insole is arranged in the shock-resistant shoe, and the insole is mainly characterized in that the height of a heel part is higher than that of a half sole part, so that an included angle between a heel bone and a gravity line is increased, the gravity center of a human body moves forwards, the load of the heel part is reduced, and the purpose of reducing or avoiding the damage of the heel part is achieved. The shoe has the advantages of complex integral structure, heavy weight, increased foot load, high heel of the shock-resistant composite insole, poor wearing comfort, capability of reducing heel stress, stress concentration at the half sole, non-conformity with human ergonomics and unsuitability for jumping over a landing working condition.
Chinese patent 'an anti-impact shoe (application number: 200820033475.0)' discloses an anti-impact shoe with a steel wire rope sole, which comprises an outsole, an outsole and a vamp, wherein a cavity is further arranged at the heel part between the connecting surfaces of the outsole and the outsole, and an anti-impact device respectively connected with the outsole and the outsole is arranged in the cavity to form a high-impact-resistance sole structure. The shock absorber is of a steel wire rope structure, the main materials are steel, alloy and other metals, the rigidity is high, the plasticity is high, but the elasticity is poor, the stability of a human body is not kept during landing, and therefore the shock absorber is not suitable for jumping the landing working condition. Moreover, the adhesion of the steel wire rope with the upper top plate and the lower bottom plate is easy to fall off and loose, and the service life of the shock-resistant shoe is difficult to guarantee.
Therefore, how to provide a lightweight sole structure which can resist excessive sole reaction force under the condition of landing under high jump is a problem to be solved in the field.
Disclosure of Invention
In view of the above, the invention provides an impact-resistant sole structure based on cat foot pad bionics, which is used for providing a lightweight impact-resistant sole to effectively reduce the ground reaction force applied to the sole of a human body when the human body jumps down and lands, thereby reducing or avoiding the damage of the impact to the lower limbs of the human body.
The invention provides a cat foot pad bionic impact-resistant sole structure which comprises a substrate, wherein plane-symmetric three-dimensional structures based on cat foot pad bionic are embedded in positions of the substrate corresponding to metatarsal bones and calcaneus respectively;
the three-dimensional structure is completely embedded in the substrate, and the bottom surface of the three-dimensional structure is flush with the upper surface of the substrate;
the three-dimensional structure comprises a central body, a middle layer and a surface layer, wherein the middle layer completely covers the central body; the central body is internally provided with a plurality of ellipsoidal hollow compartments which are uniformly distributed at an upper layer and a lower layer, the long axis of each hollow compartment is vertical to the bottom surface of the three-dimensional structure, and the projection of the sphere center of the lower layer of hollow compartment on the bottom surface of the three-dimensional structure is positioned at the gap of the projection of the upper layer of hollow compartment on the bottom surface of the three-dimensional structure;
the material of the substrate is the same as that of the surface layer and is any one of a polyurethane material, a thermoplastic rubber material and a polyvinyl chloride material; the middle layer is made of a silica gel material; the central body is made of any one of a polyester fiber material, a high-performance polyphenylene sulfide fiber material and a biomass polylactic acid fiber material; each hollow compartment is filled with a shear thickening fluid or shear thickening gel.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, in each layer of hollow cells, one hollow cell is taken as a center, and other hollow cells are arranged into a plurality of concentric regular hexagons; from inside to outside, the six vertexes of the first regular hexagon are respectively provided with a hollow compartment, the six vertexes are respectively superposed with the sphere centers of the corresponding hollow compartments, the six vertexes and the middle positions of the six sides of the second regular hexagon are respectively provided with a hollow compartment, the middle positions of the six vertexes and the six sides are respectively superposed with the sphere centers of the corresponding hollow compartments, and the like;
the projection of the sphere center of each hollow compartment in the lower layer on the bottom surface of the three-dimensional structure is superposed with the center of a regular triangle formed by the projection of the sphere centers of three adjacent hollow compartments which are arranged according to a regular triangle in the upper layer on the bottom surface of the cubic structure.
In one possible implementation, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, all the hollow compartments are the same in size; each hollow compartment is a spheroid with a length ratio of minor to major axis of 1: 3.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, the number of the hollow compartments in the central body is 5-15.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, the three-dimensional structure is embedded in the position, corresponding to the phalanges, of the substrate.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, the volume ratio of the three-dimensional structure embedded in the position of the base corresponding to the phalanges, the three-dimensional structure embedded in the position of the base corresponding to the metatarsals and the three-dimensional structure embedded in the position of the base corresponding to the calcaneus is 1:8: 8.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, the three-dimensional structure is a cylinder or a hemisphere.
In a possible implementation manner, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, the ratio of the thickness of the surface layer, the thickness of the middle layer and the radius of the bottom surface of the central body is 1:1: 4.
According to the cat foot pad bionic impact-resistant sole structure provided by the invention, the cat foot pad bionic three-dimensional structure is embedded into a common base structure (especially the positions corresponding to metatarsus, calcaneus and phalanges), so that a good buffering effect can be achieved, the whole weight is light, and high flexibility can be ensured while good buffering performance is exerted; the ellipsoidal hollow compartment in the central body of the three-dimensional structure is completely closed, the deformation of the ellipsoidal hollow compartment has self-adaptability, and the ellipsoidal hollow compartment can automatically recover the original state after the external force is dissipated, so that the repeatable use times are increased, and the service life is prolonged; the overall shape, the composition materials, the thickness of each layer, the type of fluid in the hollow compartments, the shape, the number and the size of the hollow compartments and the like of the three-dimensional structure based on the cat foot pad bionics are preferably configured, so that the buffering performance of the three-dimensional structure based on the cat foot pad bionics can be flexibly adjusted, the three-dimensional structure is suitable for different application fields, and the application range is wide; the raw material cost of above-mentioned sole structure is cheap, and easily processing can directly fill in other existing equipment based on cat foot pad bionic spatial structure, satisfies the demand of shocking resistance, convenient to use.
Drawings
FIG. 1 is a schematic structural view of an impact-resistant sole structure based on cat foot pad bionics provided in the present invention;
FIG. 2 is a schematic structural diagram of a three-dimensional structure in an anti-impact sole structure based on cat foot pad bionics provided by the present invention;
fig. 3 is a schematic diagram of an arrangement mode of two layers of hollow compartments in an anti-impact sole structure based on cat foot pad bionics provided by the invention.
Description of reference numerals: the base 1, based on cat foot pad bionic spatial structure 2, central body 3, intermediate level 4, top layer 5, hollow compartment 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only illustrative and are not intended to limit the present invention.
The invention provides a cat foot pad bionic impact-resistant sole structure, which comprises a substrate 1, wherein the positions of the substrate 1, which correspond to metatarsal bones and calcaneus bones, are respectively embedded with a cat foot pad bionic plane-symmetric three-dimensional structure 2; because the human foot physiological structure is in an arch shape, when a person walks, runs or jumps and the like, stress is mainly concentrated at metatarsal bones and calcaneus parts, according to the distribution characteristics of plantar stress, the three-dimensional structure 2 based on the simulation of the cat foot pad is embedded at the position of the substrate 1 corresponding to the metatarsal bones and the calcaneus, and the three-dimensional structure 2 based on the simulation of the cat foot pad can dissipate most landing impact energy, has good buffer effect, can reduce the ground reaction force applied to the sole of the human body when the person lands in a jump, and further reduces or avoids the damage to the lower limbs of the human body caused by impact;
as shown in fig. 1, the three-dimensional structure 2 is completely embedded in the substrate 1, and the bottom surface of the three-dimensional structure 2 is flush with the upper surface of the substrate 1;
as shown in fig. 2, the three-dimensional structure 2 comprises a central body 3, an intermediate layer 4 completely enclosing the central body 3, and a surface layer 5 completely enclosing the intermediate layer 4; wherein, an upper layer and a lower layer of a plurality of ellipsoidal hollow compartments 6 which are uniformly distributed are arranged in the central body 3, the long axis of each hollow compartment 6 is perpendicular to the bottom surface of the three-dimensional structure 2, as shown in fig. 3, the projection of the sphere center of the lower layer hollow compartment on the bottom surface of the three-dimensional structure (a blank circle as shown in fig. 3) is positioned at the gap of the projection of the upper layer hollow compartment on the bottom surface of the three-dimensional structure (a filled circle as shown in fig. 3); the arrangement mode of the hollow compartments can better simulate the real structure of the fat cell body in the subcutaneous layer of the cat foot pad, so that the bionic action of the cat foot pad is realized, and the buffer effect of the three-dimensional structure 2 can be realized;
the material of the substrate 1 can adopt common sports shoe sole materials, such as Polyurethane (PU), thermoplastic rubber (TPE), polyvinyl chloride (PVC), and the like; because the surface layer 5 in the three-dimensional structure 2 is in direct contact with the substrate 1, the material of the surface layer 5 in the three-dimensional structure 2 can be the same as that of the substrate 1, namely any one of a polyurethane material, a thermoplastic rubber material and a polyvinyl chloride material; the middle layer 4 of the three-dimensional structure 2 plays a role in transferring and absorbing impact energy, has good elasticity and adsorbability, and can be made of silica gel materials; the central body 3 of the three-dimensional structure 2 can be made of one or more composite polymer fiber materials, such as polyester fiber materials, high-performance polyphenylene sulfide fiber materials, biomass polylactic acid fiber materials and the like; in the central body 3 of the three-dimensional structure 2, each hollow compartment 6 can be filled with shear thickening liquid or shear thickening gel, the shear thickening substance can be changed from a liquid state to a solid state under the action of a large external force, and the shear thickening substance can be changed from the solid state to the liquid state after the external force is dissipated, and the initial soft state is recovered, so that the deformation of each hollow compartment has self-adaptability, and the original state can be automatically recovered after the external force is dissipated, thereby increasing the repeatable use times and prolonging the service life; the selection of the above-mentioned materials allows the spatial structure 2 to achieve a good cushioning effect. Specifically, the cushioning properties of the three-dimensional structure 2 can be flexibly adjusted by preferably configuring the constituent materials of the three-dimensional structure 2 according to different application fields. For example, cushioned by a person jumping downUnder the application environment, the substrate 1 and the surface layer 5 of the three-dimensional structure 2 can be made of Arti-Lage materials, and the main component of the Arti-Lage materials is polyurethane; the middle layer 4 can be made of addition type two-component liquid silicone rubber HF-8509, and has tensile resistance, tear resistance and good buffer performance; each hollow compartment 6 in the central body 3 is filled internally with a Shear Thickening Fluid (STF) consisting of silicon dioxide (SiO) with a particle size of 25nm2) And polyethylene glycol (PEG) with the average molecular weight of 300 according to the mass ratio of 2:1, and the preparation method comprises the steps of stirring, mixing, standing and the like.
The buffering principle of the anti-impact sole structure based on the cat foot pad bionics provided by the invention is as follows: when a person wearing the anti-impact sole structure provided by the invention jumps down from a high position to land, the ground reaction force penetrates through the sole and acts on the base 1 of the sole firstly, the thickness of the base 1 is reduced, and the base cushioning effect is achieved through larger deformation. Meanwhile, the foot of the human body compresses the three-dimensional structure 2 in the base 1 from the upper part, the ground compresses the three-dimensional structure 2 in the base 1 from the lower part, the acting force is relatively small in the initial stage of compression, the middle layer 4 mainly plays a role in buffering and energy absorption, the STF in the hollow compartment 6 is in a liquid state, and the rigidity is relatively small; with the increase of the acting force, the STF is converted from liquid to solid, and in the whole conversion process, part of external force work is converted into the self kinetic energy and strain energy of the liquid, and the like; due to the need to overcome viscous forces (friction), part of the external work is dissipated in the form of heat energy; thus, by dissipating the landing impact energy, a good buffering effect is achieved. Moreover, the rigidity of the STF converted into the solid state is obviously increased, and the residual energy after buffering can be resisted, so that the damage to the sole caused by the undersize thickness of the sole is prevented.
When the cat foot pad-based bionic impact-resistant sole structure provided by the invention is used for an impact-resistant sole for a human body to jump down and land, the overall weight of the sole is lighter, the extra foot load cannot be increased, and the base is the same as that of a common sports shoe, so that the wearing comfort can be ensured, and the cat foot pad-based bionic impact-resistant sole structure conforms to the human body ergonomics. Due to the action of the shear thickening substance in the hollow compartment based on the bionic three-dimensional structure of the cat foot pad, when a human body jumps down and lands, the sole has small rigidity and large elasticity before landing, and the buffer shock absorption can be realized through large deformation at the initial stage of landing. Along with the gradual increase of the ground reaction force, the shear thickening substance is changed from a liquid state to a solid state form, the rigidity of the sole is gradually increased, the deformation rate is reduced, the sole can keep a certain thickness, and the direct impact of the ground reaction force on the sole is prevented. At the later stage of landing buffering, the ground reaction force is greatly reduced, the shear thickening substance recovers a liquid state form, the viscosity is increased, the rigidity is reduced, and the stability and the comfort can be ensured in the processes of rising and walking later. In the whole landing process, the surface layer of the three-dimensional structure based on the bionic cat foot pad can play a role in maintaining the integrity of the three-dimensional structure, the middle layer can play a role in transferring and absorbing impact energy, and the central body can play a role in protecting the hollow compartment and self-adapting deformation.
In practical implementation, in the above-mentioned impact-resistant sole structure based on cat-foot pad biomimetic simulation provided by the present invention, in each layer of hollow cells, fig. 3 illustrates the upper layer of hollow cells (such as filled circles shown in fig. 3) as an example, with one hollow cell a as the center, and the other hollow cells (bcdefghijklmnoqrs) are arranged into a plurality of concentric regular hexagons (BCDEFG is arranged into a first regular hexagon, and hijklmnoqrs is arranged into a second regular hexagon); from inside to outside, the first regular hexagon is provided with hollow cells BCDEFG at six vertices, and the six vertices coincide with the spherical centers of the corresponding hollow cells, the second regular hexagon is provided with hollow cells HIJKLMNOPQRS at six vertices and at the middle positions of six sides, and the six vertices and the middle positions of the six sides coincide with the spherical centers of the corresponding hollow cells, and so on, fig. 3 illustrates by taking two concentric regular hexagons as an example; the projection of the sphere center of each hollow compartment in the lower layer on the bottom surface of the three-dimensional structure (such as the blank circle shown in fig. 3) coincides with the center of a regular triangle formed by the projection of the sphere centers of three adjacent hollow compartments arranged in a regular triangle (such as the filled circle shown in fig. 3) in the upper layer on the bottom surface of the three-dimensional structure, for example, the projection of the sphere center of the hollow compartment T in the lower layer on the bottom surface of the three-dimensional structure is located at the center of a regular triangle formed by the projection of the sphere centers of three hollow compartments ABC in the upper layer on the bottom surface of the three-dimensional structure. Arrange two-layer hollow compartment according to above-mentioned mode, can simulate the true structure of the fat cell body in the cat callus on the sole subcutaneous layer better, realize that more lifelike cat callus on the sole is bionical to can make spatial structure's cushioning effect better.
Based on the whole shape, the thickness of each layer, the shape, the number, the size and the like of the bionic three-dimensional structure of the cat foot pad, the cat foot pad can be adaptively configured according to different application environments, so that the optimal buffering effect is achieved.
In specific implementation, in the anti-impact sole structure based on the cat foot pad bionic structure provided by the invention, all the hollow compartments can be the same in size, each hollow compartment can be a rotational ellipsoid, and the length ratio of the semi-short axis to the semi-long axis is preferably 1:3, so that the shape and size of the hollow compartments are designed, impact energy can be better dissipated, and a good buffering effect is achieved.
In specific implementation, in the bionic anti-impact sole structure based on the cat foot pad, the number of the hollow compartments in the central body is preferably 5-15, so that the number of the hollow compartments is designed, impact energy can be better dissipated, and a good buffering effect is achieved.
Preferably, in the anti-impact sole structure based on the cat-foot pad bionic structure provided by the invention, in addition to embedding the three-dimensional structure based on the cat-foot pad bionic structure in the position of the substrate corresponding to the metatarsus and the calcaneus, the three-dimensional structure based on the cat-foot pad bionic structure can also be embedded in the position of the substrate corresponding to the phalanx, as shown in fig. 1. Because the physiological structure of the foot of the human body is in a bow shape, stress is concentrated at the phalanges when a person walks, runs or jumps and the like, therefore, according to the stress distribution characteristics of the sole, the three-dimensional structure based on the simulation of the cat foot pad is embedded at the position of the substrate corresponding to the phalanges, so that the ground reaction force borne by the sole of the human body when the person lands when the person jumps down can be further reduced, and the damage to the lower limbs of the human body caused by impact can be further reduced or avoided.
In specific implementation, in the anti-impact sole structure based on the cat foot pad bionics provided by the invention, the three-dimensional structures based on the cat foot pad bionics are respectively embedded in the positions of the substrate corresponding to the phalanges, the metatarsals and the calcaneus, and the three-dimensional structure volumes of the three parts can be configured adaptively according to different application environments. Preferably, the volume ratio of the three-dimensional structure embedded in the position where the base corresponds to the phalanges, the three-dimensional structure embedded in the position where the base corresponds to the metatarsals, and the three-dimensional structure embedded in the position where the base corresponds to the calcaneus may be set to 1:8:8, and the three-dimensional structures of the phalanges, the metatarsals, and the calcaneus may be set according to the volume ratio, so that the cushioning effect is optimal.
In specific implementation, in the anti-impact sole structure based on the cat foot pad bionic structure provided by the invention, the three-dimensional structure is a plane-symmetric structure, and is preferably a cylinder or a hemisphere. Of course, other shapes of plane symmetrical structures are also possible, such as a cone, a segment, or a crown, which are not limited herein.
In specific implementation, in the bionic anti-impact sole structure based on the cat foot pad provided by the invention, the three-dimensional structure is taken as a cylinder or a hemisphere as an example, the bottom surface of the three-dimensional structure is a circle, and the ratio of the thickness of the surface layer in the three-dimensional structure, the thickness of the middle layer and the radius of the bottom surface of the central body is preferably 1:1:4, so that the overall shape and the thickness of each layer of the three-dimensional structure are designed, impact energy can be better dissipated, and a good buffering effect is achieved.
According to the cat foot pad bionic impact-resistant sole structure provided by the invention, the cat foot pad bionic three-dimensional structure is embedded into a common base structure (especially the positions corresponding to metatarsus, calcaneus and phalanges), so that a good buffering effect can be achieved, the whole weight is light, and high flexibility can be ensured while good buffering performance is exerted; the ellipsoidal hollow compartment in the central body of the three-dimensional structure is completely closed, the deformation of the ellipsoidal hollow compartment has self-adaptability, and the ellipsoidal hollow compartment can automatically recover the original state after the external force is dissipated, so that the repeatable use times are increased, and the service life is prolonged; the overall shape, the composition materials, the thickness of each layer, the type of fluid in the hollow compartments, the shape, the number and the size of the hollow compartments and the like of the three-dimensional structure based on the cat foot pad bionics are preferably configured, so that the buffering performance of the three-dimensional structure based on the cat foot pad bionics can be flexibly adjusted, the three-dimensional structure is suitable for different application fields, and the application range is wide; the raw material cost of above-mentioned sole structure is cheap, and easily processing can directly fill in other existing equipment based on cat foot pad bionic spatial structure, satisfies the demand of shocking resistance, convenient to use.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. An impact-resistant sole structure based on cat foot pad bionics comprises a substrate, and is characterized in that the positions of the substrate corresponding to metatarsal bones and calcaneus bones are respectively embedded with a plane-symmetric three-dimensional structure based on cat foot pad bionics;
the three-dimensional structure is completely embedded in the substrate, and the bottom surface of the three-dimensional structure is flush with the upper surface of the substrate;
the three-dimensional structure comprises a central body, a middle layer and a surface layer, wherein the middle layer completely covers the central body; the central body is internally provided with a plurality of ellipsoidal hollow compartments which are uniformly distributed at an upper layer and a lower layer, the long axis of each hollow compartment is vertical to the bottom surface of the three-dimensional structure, and the projection of the sphere center of the lower layer of hollow compartment on the bottom surface of the three-dimensional structure is positioned at the gap of the projection of the upper layer of hollow compartment on the bottom surface of the three-dimensional structure;
the material of the substrate is the same as that of the surface layer and is any one of a polyurethane material, a thermoplastic rubber material and a polyvinyl chloride material; the middle layer is made of a silica gel material; the central body is made of any one of a polyester fiber material, a high-performance polyphenylene sulfide fiber material and a biomass polylactic acid fiber material; each hollow compartment is filled with a shear thickening fluid or shear thickening gel.
2. The cat-foot pad-based biomimetic impact-resistant sole structure according to claim 1, wherein in each layer of hollow cells, one hollow cell is centered, and the other hollow cells are arranged in a plurality of concentric regular hexagons; from inside to outside, the six vertexes of the first regular hexagon are respectively provided with a hollow compartment, the six vertexes are respectively superposed with the sphere centers of the corresponding hollow compartments, the six vertexes and the middle positions of the six sides of the second regular hexagon are respectively provided with a hollow compartment, the middle positions of the six vertexes and the six sides are respectively superposed with the sphere centers of the corresponding hollow compartments, and the like;
the projection of the sphere center of each hollow compartment in the lower layer on the bottom surface of the three-dimensional structure is superposed with the center of a regular triangle formed by the projection of the sphere centers of three adjacent hollow compartments which are arranged according to a regular triangle on the bottom surface of the three-dimensional structure in the upper layer.
3. The cat-foot pad-based biomimetic impact-resistant sole structure of claim 1, wherein all of the hollow cells are the same size; each hollow compartment is a spheroid with a length ratio of minor to major axis of 1: 3.
4. The cat-foot pad biomimetic based impact resistant sole structure of claim 1, wherein the number of hollow cells within the central body ranges from 5 to 15.
5. The cat-foot pad-based biomimetic impact-resistant sole structure of claim 1, wherein the three-dimensional structure is embedded in a position of the base corresponding to the phalanges.
6. The cat-foot-pad-based biomimetic impact-resistant sole structure according to claim 5, wherein the volume ratio of the three-dimensional structure embedded at the position of the base corresponding to the phalanges, the three-dimensional structure embedded at the position of the base corresponding to the metatarsals, and the three-dimensional structure embedded at the position of the base corresponding to the calcaneus is 1:8: 8.
7. The cat-foot-pad-based biomimetic impact-resistant sole structure according to claim 1, wherein the three-dimensional structure is a cylinder or a hemisphere.
8. The cat-foot-pad-based biomimetic impact-resistant sole structure of claim 7, wherein a ratio of a thickness of the surface layer, a thickness of the intermediate layer, and a radius of the central body bottom surface is 1:1: 4.
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