CN210158087U - Shoes based on negative poisson ratio cellular structure - Google Patents
Shoes based on negative poisson ratio cellular structure Download PDFInfo
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- CN210158087U CN210158087U CN201921017029.5U CN201921017029U CN210158087U CN 210158087 U CN210158087 U CN 210158087U CN 201921017029 U CN201921017029 U CN 201921017029U CN 210158087 U CN210158087 U CN 210158087U
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Abstract
The utility model discloses a shoes based on negative poisson ratio cellular structure, include: a sole, an insole and a supporting air cushion; the supporting air cushion comprises a bottom surface part, a heel part and an air cushion part, wherein the heel part is formed at the rear side of the bottom surface part and extends upwards; the sole and the insole both comprise negative Poisson ratio cellular structure layers formed by arranging a plurality of negative Poisson ratio cells along a three-dimensional direction; the bottom surface part is clamped between the sole and the insole. All be equipped with burden poisson ratio cell structure in shoe-pad and the sole, arrange on three-dimensional direction by burden poisson ratio cell and constitute, have burden poisson ratio effect, make the utility model provides a shoes can fully absorb the external load energy, have fine buffering, shock attenuation and the effect of shocking resistance.
Description
Technical Field
The utility model belongs to the technical field of shoes, concretely relates to shoes based on negative poisson ratio cellular structure.
Background
With the continuous improvement of the quality of life, the requirements of people on various living goods are higher and higher. The shoes are one of the essential equipment in people's daily life, and in daily trip, shoes play a not neglectable effect.
Most shoes in the existing market mainly comprise four parts, namely a vamp, an insole, a sole and a toe cap, wherein the insole is mainly made of textile fabric or rubber, the sole is mainly made of rubber, the toe cap and the vamp are mainly made of textile fabric, and the shoes have the defects in the aspects of heat dissipation, foot protection effect of people during sports and the like.
The poisson ratio is the ratio of the absolute value of transverse positive strain and axial positive strain when a material is unidirectionally pulled or pressed, and is also called a transverse deformation coefficient, and is an elastic constant reflecting transverse deformation of the material. The negative poisson's ratio effect is a phenomenon in which a material expands laterally in an elastic range when stretched, and contracts laterally in an elastic range when compressed. Compared with the traditional positive poisson ratio material (common in the natural world), the negative poisson ratio material has unique properties different from the common material, has incomparable advantages compared with other materials in many aspects, and particularly greatly improves the physical and mechanical properties of the material, such as the shear modulus, the notch resistance and the fracture resistance of the material and the resilience toughness of the material.
The negative poisson ratio material is more and more widely applied in our life, and can be applied to specific occasions due to the excellent buffering and energy absorbing performance of the negative poisson ratio material. When the material with the negative Poisson ratio is acted by external compression stress, the material is transversely contracted in a direction perpendicular to the stress direction, the stress direction is expanded, and the expansion can offset the action of the external stress, so that a good energy absorption and shock absorption effect can be achieved.
Patent document with application number 201621226336.0 discloses a 3D prints shoe-pad, includes the supporting layer that has hollow out construction who is woven by the filling unit and forms, hollow out construction distributes in the surface and the inside of supporting layer, hollow out construction is the fretwork part of filling unit itself, and/or weaves the formation by adjacent filling unit. The 3D printing insole is made of common materials, the buffering and shock absorption performance is insufficient, and the protection effect on human feet is also insufficient.
Disclosure of Invention
The utility model aims at providing a shoes based on cellular structure of negative poisson ratio aims at solving current shoes structure complicacy, buffering damping performance poor and airtight problem.
In order to achieve the above object, the present invention provides a shoe based on negative poisson's ratio cellular structure, including: a sole, an insole and a supporting air cushion; the supporting air cushion comprises a bottom surface part, a heel part and an air cushion part, wherein the heel part is formed at the rear side of the bottom surface part and extends upwards; the sole and the insole both comprise negative Poisson ratio cellular structure layers formed by arranging a plurality of negative Poisson ratio cells along a three-dimensional direction; the bottom surface part is clamped between the sole and the insole.
Preferably, the insole further comprises an insole surface layer and an insole bottom layer, and the negative poisson ratio cellular structure layer of the insole is clamped between the insole surface layer and the insole bottom layer; the size of the negative poisson ratio cells of the adjacent layer of the negative poisson ratio cell structure layer of the insole is reduced from top to bottom in sequence according to gradient.
Preferably, the sole further comprises a sole surface layer and a sole bottom layer, and the negative poisson's ratio cellular structure layer of the sole is clamped between the sole surface layer and the sole bottom layer; in the negative poisson ratio cellular structure layer of the sole, cellular foam is filled in the cell hole of each negative poisson ratio cell and between adjacent negative poisson ratio cells.
Preferably, the supporting air cushion further comprises toe bone protecting parts arranged on the left side and the right side of the front side of the bottom part and a heel protecting part arranged on the inner side of the heel part, wherein the toe bone protecting parts and the heel protecting part are made of integral soft rubber, integral sponge, integral cotton cloth, soft rubber wrapped by sponge or soft rubber wrapped by cotton cloth.
Preferably, the air storage cavities comprise two air storage cavities which are respectively positioned at the front side and the rear side of the air cushion part, and the two air storage cavities are connected through an air duct.
Preferably, the heel part is a net made of resin-based composite material or plastic.
Preferably, the shoe further comprises a vamp and a toe cap arranged on the front side of the vamp, wherein the vamp is made of mesh cloth made of nylon or polyester fibers; the shoe head comprises a shoe head surface layer, a shoe head middle layer and a shoe head bottom layer, the shoe head middle layer is also provided with the negative Poisson ratio cellular structure layer, and the shoe head surface layer and the shoe head bottom layer are provided with sponge pads.
Preferably, the negative poisson ratio cellular structure layer is formed by 3D printing of a negative poisson ratio structural material, the negative poisson ratio structural material comprises one or more of metal, rubber and foam, and the number of layers of the negative poisson ratio cellular structure layer is 2-5.
Preferably, the negative poisson's ratio cell comprises two upper side thin walls and two lower side thin walls corresponding to the two upper side thin walls respectively, and the two upper side thin walls and the two lower side thin walls are both in an isosceles trapezoid shape with an opening at the lower bottom; the height of the lower side thin wall is smaller than that of the upper side thin wall, and the length of the lower bottom of the lower side thin wall is equal to that of the upper bottom of the upper side thin wall; the upper bottoms of the two upper side thin walls are mutually orthogonal, and the two lower side thin walls are mutually orthogonal; the lower side thin wall is arranged in the corresponding upper side thin wall, and the bottom ends of the two waists of the lower side thin wall are respectively connected with the bottom ends of the two waists of the corresponding upper side thin wall.
Preferably, the negative poisson's ratio cell is formed by 3D printing of a first material and a second material, the upper thin wall is made of the first material, the lower thin wall is made of the second material, and the hardness of the first material is larger than that of the second material.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect:
one, all be equipped with negative poisson ratio cellular structure in shoe-pad and the sole, arrange on the three-dimensional direction by negative poisson ratio cellular and constitute, have negative poisson ratio effect, make the utility model provides a shoes can fully absorb the external load energy, have fine buffering, shock attenuation and the effect of shocking resistance.
Two, the utility model provides a shoes are owing to adopted negative poisson ratio cellular structure, have the cell hole in the cell, have the clearance between the adjacent cell, and the quality of sole shoe-pad all is lighter than the quality of general plastic sole shoe-pad to improve the comfort level of foot, the existence in cell hole and clearance still helps the circulation of air, plays deodorant effect.
And a supporting air cushion is arranged between the sole and the insole, the bottom surface part and the heel part of the supporting air cushion play a supporting role, the air cushion part of the supporting air cushion plays a buffering role, and the air cushion part is combined with the insole and the sole which are of a negative Poisson ratio structure on the upper surface and the lower surface together, so that the anti-fatigue, shock-absorbing and impact-resisting effects are further improved.
Four, the utility model discloses still in the cell of every negative poisson ratio cell of sole, fill the filler between the adjacent negative poisson ratio cell, the filler can be honeycomb foam, and the foam filler is on the basis of guaranteeing the lightweight, has further improved bearing capacity, and each thin wall that can prevent negative poisson ratio cell structure produces serious shear deformation impaired when receiving the collision impact, has improved the stability of negative poisson ratio cell structure to a certain extent.
Fifthly, in the negative poisson ratio structure that each part of shoe-pad, sole and tip adopted, the size of the negative poisson ratio cell of each layer from top to bottom is steadilyd decrease according to certain gradient, increases gradually from the bottom layer part to surface course part density promptly, can produce the gradient effect of continuity like this, compares the same negative poisson ratio structure of every layer of cell size, has better energy-absorbing buffering.
Sixth, negative poisson ratio structural layer can adopt different multiple materials to form through 3D printing, and the upside thin wall that is located the upper portion adopts first material to make, and the downside thin wall that is located the lower part adopts the second material to make, makes the hardness of first material be greater than the hardness of second material, selects the material of different hardnesses to make negative poisson ratio structure according to the condition at the actual bearing capacity at different positions like this, compares the conventional negative poisson ratio structure that adopts single material to print, can play better energy-absorbing and buffering effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of a shoe based on a negative poisson ratio cellular structure according to an embodiment of the present invention (supporting air cushion is not shown);
FIG. 2 is a schematic cross-sectional view of the insole based on the negative Poisson ratio cell structure shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the sole of FIG. 1 based on a negative Poisson ratio cell structure;
FIG. 4 is a schematic cross-sectional view of the toe cap of FIG. 1 based on the negative Poisson ratio cellular structure;
FIG. 5 is a cross-sectional view of the shoe based on the negative Poisson ratio cell structure shown in FIG. 1, wherein the negative Poisson ratio cells are arranged in a gradient manner;
FIG. 6 is a block diagram of an individual negative Poisson ratio cell in the negative Poisson ratio cell-based footwear of FIG. 1;
FIG. 7 is a diagram showing the arrangement of two negative Poisson ratio cells in the shoe based on the negative Poisson ratio cell structure shown in FIG. 1;
FIG. 8 is a diagram showing the arrangement of four negative Poisson ratio cells in the shoe based on the negative Poisson ratio cell structure shown in FIG. 1;
FIG. 9 is a schematic representation of the deformation characteristics of negative Poisson ratio cells in the negative Poisson ratio cell structure-based footwear of FIG. 1 when subjected to positive pressure;
FIG. 10 is a schematic representation of the deformation characteristics of negative Poisson ratio cells in the negative Poisson ratio cell structure-based shoe of FIG. 1 when subjected to a lateral load;
fig. 11 is a schematic view showing a structure of a supporting cushion in the shoe based on the negative poisson's ratio cell structure as set forth in fig. 1.
The reference numbers of the utility model explain:
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a shoes based on negative poisson ratio cellular structure.
Referring to fig. 1 to 11, the shoe based on the negative poisson ratio cellular structure includes an insole 1, a sole 2, a supporting cushion 6, a toe cap 3 and a vamp 4, and fig. 1 is a schematic structural view of the shoe with a portion of the supporting cushion 6 omitted.
The insole 1 comprises an insole surface layer 1-1, an insole middle layer 1-2 and an insole bottom layer 1-3 which are arranged from top to bottom in sequence. The sole 2 comprises a sole surface layer 2-1, a sole middle layer 2-3 and a sole bottom layer 2-4 which are arranged from top to bottom in sequence. The insole middle layer 1-2 and the sole middle layer 2-3 both adopt negative Poisson ratio cellular structures, and comprise two or more negative Poisson ratio cellular structure layers, and each negative Poisson ratio cellular structure comprises a plurality of negative Poisson ratio cells.
Specifically, in the present embodiment, the shape of the single negative poisson's ratio cell 5 is: the two upper side thin walls 5-1 and the two lower side thin walls 5-2 are in an isosceles trapezoid shape with an opening at the lower bottom, namely, the upper bottom edge is not provided, the length of the upper bottom edge of the upper side thin wall 5-1 is equal to that of the upper bottom edge of the lower side thin wall 5-2, the height of the upper side thin wall 5-1 is greater than that of the lower side thin wall 5-2, the length of the lower bottom edge of the upper side thin wall 5-1 is greater than that of the lower bottom edge of the lower side thin wall 5-2, so that the lower side thin wall 5-2 can be accommodated in the upper side thin wall 5-1, the bottom ends of the two waists of the upper side thin wall 5-1 and the bottom ends of the two waists of the lower side thin wall 5-2 are respectively connected into a whole, the two upper.
The plurality of negative Poisson ratio cells are arranged in a horizontal direction in a transverse and longitudinal extending mode, and every two adjacent negative Poisson ratio cells 5 are connected at the bottom end positions of the two waists, so that a negative Poisson ratio cell structure layer is formed. When the negative poisson ratio cells 5 are also arranged in an extending mode in the up-down direction, the lower bottom of the lower thin wall 5-2 positioned on the upper layer is connected with the upper bottom of the upper thin wall 5-1 positioned on the lower layer into a whole. The negative poisson ratio cellular structure formed by the method has the following characteristics: when the negative poisson ratio cell is subjected to positive pressure in the vertical direction from the outside, the upper bottom of the negative poisson ratio cell on the lower layer can prop against the lower bottom of the negative poisson ratio cell on the upper layer, so that the negative poisson ratio cell is lengthened in the vertical direction and narrowed in the horizontal direction; when subjected to external horizontal pressure, the negative poisson's ratio cell widens horizontally and shortens vertically.
In the embodiment, the negative poisson ratio cells on the upper layer are larger than the negative poisson ratio cells on the lower layer and are reduced in a gradient manner according to a certain proportion from top to bottom by adopting the negative poisson ratio structure of the sole 2 and the insole 1, so that the external load pressure is weakened continuously when passing through each layer of negative poisson ratio cell structure layer, the load action to the lower part is reduced sequentially, and the buffering and shock absorption functions are further enhanced.
The supporting cushion 6 includes a bottom portion 6-1, a heel portion 6-2 and an cushion portion 6-3, the bottom portion 6-1 is formed in a shape corresponding to the shape of the insole 1, the bottom portion 6-1 is sandwiched between the sole 2 and the insole 1, and the heel portion 6-2 extends upward at a heel position of the bottom portion 6-1. The section of the heel part 6-2 is U-shaped, extends upwards for a certain height and can cover the ankle, the heel part 6-2 is made of plastic, resin matrix composite materials, elastic hardboard, rubber and plastic composite materials and the like, so that certain strength and toughness are guaranteed, the ankle is supported relative to the movement in the shoe, and the heel part 6-2 is designed to be net-shaped, so that the air permeability is guaranteed while the supporting performance is guaranteed. Specifically, during manufacturing, the bottom portion 6-1 and the heel portion 6-2 are integrally formed, the periphery of the sole is surrounded by a vamp, the position of the vamp corresponding to the heel can be formed by two layers of canvas, and the heel portion 6-2 is clamped between the two layers of canvas for positioning.
The air cushion part 6-3 is arranged at the bottom of the bottom part 6-1 and is attached to the lower bottom surface of the bottom part 6-1, the air storage cavity is formed in the air cushion part 6-3, and specifically in the embodiment, the air storage cavity comprises two mutually separated air storage cavities which are respectively arranged at the front position and the rear position, the front air storage cavity and the rear air storage cavity are connected through an air vent pipeline 6-4, and both the air storage cavities are provided with air vents communicated to the outside. The air cushion part 6-3 is made of rubber and other materials. When a person walks, the front sole of the foot firstly exerts force to press the front air storage cavity downwards, and air in the front air storage cavity can be discharged from the air vent on the side surface or enter the rear air storage cavity through the air vent pipeline to supplement air for the rear air storage cavity. Then, when the heel presses the rear air storage cavity, the air in the rear air storage cavity is pressed into the front air storage cavity through the air duct, so that the front side of the air cushion part rebounds, the processes of landing the sole and landing the heel are repeated along with the forward walking of the person, the air in the two air storage cavities flows back and forth, a dynamic balance process is formed, and good buffering and shock absorption effects are achieved.
Therefore, the shoes provided by the utility model have the advantages that firstly, the sole 2 and the insole 1 both adopt the negative Poisson ratio cellular structure, the negative Poisson ratio effect of the negative Poisson ratio cellular structure can fully absorb the external load energy, and the buffering and shock absorption effects are achieved; secondly, because of adopting the negative Poisson ratio cellular structure, the cellular is provided with the cellular hole in the cellular, the gap exists between the adjacent cellular, the quality of the sole insole is lighter than that of the common plastic sole insole, thereby improving the comfort level of the foot, and the cellular hole and the gap are also beneficial to the circulation of air and play a role in deodorization; thirdly, a supporting air cushion 6 is arranged between the sole 2 and the insole 1, the bottom part 6-1 and the heel part 6-2 of the supporting air cushion 6 play a supporting role, the air cushion part 6-3 of the supporting air cushion 6 plays a buffering role, and the air cushion part 6-3 is combined with the insole and the sole which are of a negative poisson ratio structure on the upper surface and the lower surface, so that the insole has good anti-fatigue, shock-absorbing and impact-resisting effects.
Furthermore, toe bone protection parts are arranged on the left side and the right side of the front side of the bottom surface part of the supporting air cushion 6, the rear end of the bottom surface part is positioned on the inner side of the heel part, and the heel protection parts are arranged on the inner side of the heel part and can be made of integral soft rubber, integral sponge, integral cotton cloth, soft rubber wrapped with sponge or soft rubber wrapped with cotton cloth, so that toe bones and heels can be effectively protected.
Further, in the negative poisson's ratio cellular structure layer of the sole 2, the inside of each cell of the negative poisson's ratio cell and between adjacent negative poisson's ratio cells are filled with filler 2-2, and the filler 2-2 may be honeycomb foam. The foam filler further improves the bearing capacity on the basis of ensuring light weight, can prevent each thin wall of the negative Poisson ratio cellular structure from generating serious shearing deformation damage when being impacted by collision, and improves the stability of the negative Poisson ratio cellular structure to a certain extent.
Further, the toe cap 3 comprises a toe cap surface layer 3-1, a toe cap middle layer 3-2 and a toe cap bottom layer 3-3, the toe cap middle layer 3-2 also adopts a negative poisson's ratio structure which is the same as the insole middle layer 1-2 and the sole middle layer 2-3, the toe cap surface layer and the toe cap bottom layer adopt sponge cushions, if a heavy object smashes the toe cap, the combination of the sponge cushions and the negative poisson's ratio structure can effectively protect the foot, and in order to ensure the heat radiation performance of the toe cap, no foam filler is filled in the negative poisson's ratio structure of the toe cap middle layer.
Further, vamp 4 adopts the mesh cloth who is made by nylon or polyester fiber to make, and this kind of net face structure can effectively alleviate the weight of shoes, increases the ventilation function of shoes to, because the net face material is soft, can avoid the injury to the foot when the motion, play further guard action to the foot.
In the above embodiments, the negative poisson's ratio structure adopted by the insole intermediate layer 1-2, the sole intermediate layer 2-3 and the toe cap intermediate layer 3-2 may be formed by 3D printing one or more of metal, rubber and foam, and may be a homogeneous material formed by mixing a plurality of materials, or may be different materials adopted at different structural positions.
The upper thin wall 5-1 of each negative Poisson ratio cell is made of a first material, the lower thin wall 5-2 is made of a second material, and the mode of printing the lower thin wall 5-2 and then the upper thin wall 5-1 respectively can be realized when 3D printing is adopted, because the lower thin wall 5-2 bears smaller force than the upper thin wall 5-1, in the embodiment, the hardness and the strength of the adopted first material are higher than those of the second material, and the second material is softer, so that better energy absorption and buffering effects can be achieved, and the service life can be prolonged to a certain extent.
In the prior art, there are many 3D printing technologies for forming parts by using various materials, such as a photo-curing forming technology, a direct energy deposition forming technology, a powder sintering technology, and the like. In the present embodiment, 3D printing of a negative poisson's ratio structure can be performed using a multi-material molding system developed by the stereolithography SLA technique, and molding of various material parts can be achieved by automatically switching supply of molding materials to a plurality of rotating material tanks containing different materials. Taking metal and rubber as an example, firstly putting a rubber material into a charging chamber, adjusting the pressure of a nozzle through a pressure adjusting valve, enabling the rubber material to form jet flow through the nozzle uniformly and depositing the jet flow onto a substrate, when a negative Poisson ratio structure of the metal material is printed, cleaning the residual rubber waste material out of the charging chamber, then adding the metal material into the charging chamber, combining a workbench and a voltage system, and printing again until the negative Poisson ratio structure with gradient is printed.
Specific Energy Absorption (SEA) refers to the Energy absorbed by a unit weight of a structure, and peak impact refers to the maximum value of force applied to an object during a collision or a strike. Filling the insole and the sole with the negative Poisson ratio structure, performing multi-objective optimization design, taking specific energy absorption and peak impact force as design targets, selecting proper size for the negative Poisson ratio structure, constructing a simulation model, establishing a corresponding response surface model, and finding out through comparison: compared with the traditional footwear, the optimized specific energy absorption is improved by 4.32%, and the peak impact force is reduced by 7.16%.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A shoe based on a negative Poisson ratio cellular structure, comprising: a sole, an insole and a supporting air cushion;
the supporting air cushion comprises a bottom surface part, a heel part and an air cushion part, wherein the heel part is formed at the rear side of the bottom surface part and extends upwards; the sole and the insole both comprise negative Poisson ratio cellular structure layers formed by arranging a plurality of negative Poisson ratio cells along a three-dimensional direction; the bottom surface part is clamped between the sole and the insole.
2. The negative poisson's ratio cellular structure based shoe of claim 1, wherein the insole further comprises an insole top layer and an insole bottom layer, the negative poisson's ratio cellular structure layer of the insole being sandwiched between the insole top layer and the insole bottom layer; the size of the negative poisson ratio cells of the adjacent layer of the negative poisson ratio cell structure layer of the insole is reduced from top to bottom in sequence according to gradient.
3. The negative poisson's ratio cellular structure based shoe of claim 1, wherein the sole further comprises a sole upper layer and a sole lower layer, the negative poisson's ratio cellular structure layer of the sole being sandwiched between the sole upper layer and the sole lower layer; in the negative poisson ratio cellular structure layer of the sole, cellular foam is filled in the cell hole of each negative poisson ratio cell and between adjacent negative poisson ratio cells.
4. The shoe based on the negative poisson's ratio cellular structure as claimed in claim 1, wherein the supporting air cushion further comprises toe bone protecting parts arranged on the left and right sides of the front side of the bottom part and a heel protecting part arranged on the inner side of the heel part, and the toe bone protecting parts and the heel protecting part are made of integral soft rubber, integral sponge, integral cotton cloth, soft rubber wrapped with sponge, or soft rubber wrapped with cotton cloth.
5. The shoe based on the negative poisson's ratio cellular structure of claim 1, wherein said air reservoir includes two air reservoirs located at front and rear sides of the air cushion portion, respectively, and said air reservoirs are connected by an air duct.
6. The negative Poisson ratio cell structure-based shoe of claim 1, wherein said heel portion is a mesh made of a resin-based composite material or plastic.
7. The shoe based on the negative poisson's ratio cellular structure of claim 1, further comprising an upper and a toe cap provided at a front side of the upper, wherein the upper is made of mesh cloth made of nylon or polyester fiber; the shoe head comprises a shoe head surface layer, a shoe head middle layer and a shoe head bottom layer, the shoe head middle layer is also provided with the negative Poisson ratio cellular structure layer, and the shoe head surface layer and the shoe head bottom layer are provided with sponge pads.
8. The shoe based on the negative Poisson ratio cellular structure of claim 5, wherein the negative Poisson ratio cellular structure layer is formed by 3D printing of a negative Poisson ratio structural material, the negative Poisson ratio structural material comprises one or more of metal, rubber and foam, and the number of layers of the negative Poisson ratio cellular structure layer is 2-5.
9. The shoe based on the negative poisson's ratio cell structure as claimed in claim 1 or 7, wherein said negative poisson's ratio cell includes two upper side thin walls and two lower side thin walls corresponding to the two upper side thin walls, respectively, both said upper side thin walls and said lower side thin walls being isosceles trapezoid-shaped with an open lower bottom; the height of the lower side thin wall is smaller than that of the upper side thin wall, and the length of the lower bottom of the lower side thin wall is equal to that of the upper bottom of the upper side thin wall; the upper bottoms of the two upper side thin walls are mutually orthogonal, and the two lower side thin walls are mutually orthogonal; the lower side thin wall is arranged in the corresponding upper side thin wall, and the bottom ends of the two waists of the lower side thin wall are respectively connected with the bottom ends of the two waists of the corresponding upper side thin wall.
10. The negative poisson's ratio cell structure-based shoe of claim 9, wherein the negative poisson's ratio cell is 3D printed using a first material and a second material, the upper thin wall is of the first material, the lower thin wall is of the second material, and the first material has a hardness greater than a hardness of the second material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921017029.5U CN210158087U (en) | 2019-07-02 | 2019-07-02 | Shoes based on negative poisson ratio cellular structure |
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| CN201921017029.5U CN210158087U (en) | 2019-07-02 | 2019-07-02 | Shoes based on negative poisson ratio cellular structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236260A (en) * | 2019-07-02 | 2019-09-17 | 长沙理工大学 | Shoes based on negative poisson's ratio structure cell |
| CN113771710A (en) * | 2021-08-30 | 2021-12-10 | 南京航空航天大学 | Car seat based on cellular structure of interior concave hexagon negative poisson ratio |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
-
2019
- 2019-07-02 CN CN201921017029.5U patent/CN210158087U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110236260A (en) * | 2019-07-02 | 2019-09-17 | 长沙理工大学 | Shoes based on negative poisson's ratio structure cell |
| CN113771710A (en) * | 2021-08-30 | 2021-12-10 | 南京航空航天大学 | Car seat based on cellular structure of interior concave hexagon negative poisson ratio |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
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