Supporting structure and shoe sole

Abstract

The invention discloses a supporting structure and a sole, the supporting structure comprises at least one supporting layer, the supporting layer is formed by connecting a plurality of unit cells in the horizontal direction, four upper supporting arms obliquely extend from the top of each unit cell downwards and outwards relative to the horizontal direction, and four lower supporting arms obliquely extend from the bottom of each unit cell upwards and outwards relative to the horizontal direction; the top ends of the upper supporting arms are connected to form an upper connecting part, the bottom ends of the lower supporting arms are connected to form a lower connecting part, each upper supporting arm corresponds to the corresponding lower supporting arm in position in the vertical direction, and the bottom end of each pair of corresponding upper supporting arm is connected with the top end of the corresponding lower supporting arm to form a middle connecting part. When the supporting structure is applied to the shoe sole, the resilience and cushioning performance of the shoe sole can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of soles, and in particular to a supporting structure and a sole. Background Art

[0002] With the development of social economy and the continuous improvement of people's material level, more and more people pay attention to health and participate more in sports and fitness in daily life. In particular, during running and other sports, due to the effect of inertia, when the sole of the athlete's shoe touches the ground, the sole will be subjected to the downward pressure exerted by the body's own gravity on the sole, and the anti-impact force exerted by the bottom surface (generally equivalent to 3 to 5 times the body weight), which can easily cause certain damage to the athlete's knee joints and / or ankle joints and other human structures. Therefore, shoes are foot products that protect the legs and feet from injury, and the cushioning function of shoes is very important and necessary.

[0003] Many shoes with shock-absorbing function on the market are improved in the material or structure of the soles. For example, the sole material uses foamed thermoplastic polyurethane material with good shock-absorbing effect, and the sole structure uses air cushions, shock-absorbing columns and other structures. However, for the improvement of the sole material, the shock-absorbing performance required at different positions of the sole is different, and the sole made of the same material cannot meet this demand; for the improvement of the sole structure, there are problems such as the overall structure being too hard and low comfort. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a support structure and a sole. When the support structure is applied to the sole, the rebound and shock absorbing performance of the sole can be improved.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Technical solution 1: A support structure, comprising: at least one support layer is provided in the vertical direction, and the support layer is formed by connecting a plurality of unit cells in sequence along the horizontal left-right and front-back directions; the unit cell has four upper arms extending downward and outward from the top to the horizontal direction, and four lower arms extending upward and outward from the bottom to the horizontal direction; the top ends of the upper arms are connected to form an upper connecting portion, the bottom ends of the lower arms are connected to form a lower connecting portion, and each of the upper arms corresponds to the position of a lower arm in the vertical direction, and the bottom ends of each pair of corresponding upper arms and the top ends of the lower arms are connected to form a middle connecting portion; in the same unit cell, the projection shape of the four upper arms on the horizontal first projection plane is the same as the projection shape of the four lower arms on the first projection plane; the projection shape of the unit cell on the first projection plane is plane-symmetrical relative to the first axis extending left and right and the second axis extending front and back, and each pair of corresponding upper arms and lower arms are respectively located in four areas divided by the first axis and the second axis.

[0007] Technical solution 2 based on technical solution 1: in the same unit cell, on the second projection plane perpendicular to the front-to-back direction, the projection shapes of the two pairs of corresponding upper arms and lower arms located on the front side are the same as the projection shapes of the two pairs of corresponding upper arms and lower arms located on the back side; the projection shapes of the unit cell on the second projection plane are both plane-symmetrical relative to the third axis extending left and right and the fourth axis extending up and down, the four upper arms are all located above the third axis and are divided into two groups, which are respectively located on the left and right sides of the fourth axis, and the four lower arms are all located below the third axis and are divided into two groups, which are respectively located on the left and right sides of the fourth axis.

[0008] Technical solution three based on technical solution two: in each of the unit cells, the upper arm and the lower arm have the same shape.

[0009] Technical solution 4 based on technical solution 3: between the adjacent unit cells in the horizontal left-right and front-back directions, the corresponding middle connecting parts are connected as one.

[0010] Technical solution five based on technical solution four: between the unit cells adjacent in the vertical direction, the lower connecting portion of the unit cell located above and the upper connecting portion of the unit cell located below are connected as a whole.

[0011] Technical solution six based on technical solution five: the unit cell is surrounded by the upper arm and the lower arm to form a chamber, and the chamber forms a first opening of the same shape on the second projection plane in the front-to-back direction, and forms a second opening of the same shape on the third projection plane perpendicular to the left-to-right direction in the left-to-right direction.

[0012] Technical solution seven based on technical solution six: the maximum distance of the projection of the first opening on the second projection plane in the vertical direction is smaller than its maximum distance in the left-right direction.

[0013] Technical solution eight based on technical solution seven: the maximum distance of the projection of the second opening on the third projection plane in the vertical direction is smaller than its maximum distance in the front-to-back direction.

[0014] In addition, the present invention also provides technical solution nine: a sole, which adopts the support structure as described in any one of the above technical solutions one to eight.

[0015] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects:

[0016] In the support structure provided by the technical solution 1, at least one support layer is arranged in the vertical direction, and the support layer can play a supporting role. The number of support layers can be adjusted according to actual needs to obtain different degrees of rebound and shock-absorbing performance; wherein the support layer is formed by connecting a plurality of crystal cells in sequence along the horizontal left-right and front-back directions, and each crystal cell is an independent unit, and a complete support structure is formed by connecting a plurality of crystal cells in the horizontal direction; each crystal cell includes four upper arms and four lower arms, the tops of the upper arms are connected to form an upper connection part, the bottoms of the lower arms are connected to form a lower connection part, and the upper arms and the lower arms are connected correspondingly to form a middle connection part, so there is a total of one upper connection part, one lower connection part and four middle connections; and the upper arms in the crystal cells The projection shape of the upper and lower arms is the same as the projection shape of the lower arm, and the unit cell is also in a plane symmetrical shape relative to the first axis and the second axis. This shape allows the unit cell to be subjected to force. Pressure will be applied to the upper connection part, and then the pressure will be transmitted to the lower arm through the upper arm, and the lower connection part plays a supporting role. After that, the entire unit cell will expand and deform outward at the position of the middle connection part due to the downward pressure. At the same time, the upper and lower arms are also deformed, and this deformation is uniform, so as to achieve the purpose of absorbing energy when impacted and play a shock-absorbing role; then when the force is removed, the unit cell recovers the deformation, and plays a rebound role in the process of recovering the deformation; through the deformation and recovery of the unit cell, the support structure can have better shock-absorbing performance and resilience performance.

[0017] In the second technical solution, the projection shapes of the upper and lower arms in the unit cell on the second projection plane are limited, and the unit cell has a uniform and symmetrical structure in the front-to-back direction, which can achieve a better rebound and shock-absorbing effect.

[0018] In technical solution three, the upper and lower arms in the unit cell have the same shape. When the unit cell is subjected to force, the deformation of the upper and lower arms will react in the same way according to the force transmission conditions, so that the deformation and recovery of the unit cell can be synchronized from top to bottom. The support of the unit cell is more stable, and the rebound and shock-absorbing effects are more uniform and consistent.

[0019] In technical solution four, the unit cells are connected as a whole through the middle connecting part in the horizontal direction. When the upper connecting part is subjected to force, the middle connecting part expands and deforms outward, but at the same time it will be restricted by other unit cells, so that the deformation degree of the unit cell is reduced, thereby avoiding excessive deformation of the unit cell when subjected to force, resulting in a decrease in shock absorption performance.

[0020] In technical solution five, the unit cells in the vertical direction are connected as a whole through the upper connecting part and the lower connecting part. When the upper unit cell is subjected to force, the force can be transmitted to the lower unit cell. Through layer-by-layer transmission, the rebound and shock-absorbing performance of the entire supporting structure is improved.

[0021] In technical solution six, the unit cell is surrounded by the upper arm and the lower arm to form a chamber, and a first opening and a second opening are formed. The hollow chamber can reduce the weight of the entire supporting structure, and the formed opening can provide space for the deformation of the unit cell.

[0022] In technical solution seven, the maximum distance of the projection of the first opening on the second projection plane in the vertical direction is smaller than its maximum distance in the left and right directions, that is, the first opening is roughly in a vertically extending shape, which can allow the upper arm and the lower arm to provide better shock-absorbing effect when deformed.

[0023] In Technical Solution 8, the maximum distance of the projection of the second opening on the third projection plane in the vertical direction is smaller than its maximum distance in the front-to-back direction, that is, the second opening is roughly in a laterally extending shape, which allows the upper arm and the lower arm to form a larger deformation amplitude when deformed and provide better rebound.

[0024] In technical solution nine, a sole is provided, which adopts the above-mentioned supporting structure and thus has good shock-absorbing and supporting performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A structural schematic diagram of a support structure provided in Embodiment 1 of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the projection shape of the middle support structure on the first projection plane;

[0028] Figure 3 for Figure 1 A schematic diagram of the projection shape of the middle support structure on the second projection plane;

[0029] Figure 4 for Figure 1 Schematic diagram of the projection shape of the middle support structure on the third projection plane;

[0030] Figure 5 for Figure 1 Schematic diagram of the construction of a single unit cell in the support structure.

[0031] Description of main reference numerals:

[0032] Support layer 1; unit cell 2; upper arm 3; lower arm 4; upper connecting portion 5; lower connecting portion 6; middle connecting portion 7; chamber 8; first opening 9; second opening 10. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0035] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0036] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0037] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0038] Embodiment 1

[0039] The first embodiment of the present invention provides a support structure, which can be applied to a shoe sole and used as a midsole of the shoe sole. This embodiment is described with the support structure as the main body.

[0040] Reference Figure 1 , which shows the support structure provided by this embodiment, and referring to Figure 1 , which shows Figure 1 The structure of a single unit cell of the support structure.

[0041] In this embodiment, the support structure can be prepared by 3D printing, and the material used can be thermoplastic polyurethane elastomer, and the thermoplastic polyurethane elastomer material can be selected from commercially available products, such as Detron AU brand polyurethane material, Covestro UT-AU brand polyurethane material and Lubrizol BF- brand polyurethane material. Alternatively, the material used can also be nylon, and the material brand can be selected according to actual needs. It should be understood that in this embodiment, when the support structure is made of different materials, its rebound and shock-absorbing performance will inevitably be different, but this difference will not affect the support structure to achieve its function.

[0042] Reference Figure 1 The support structure has at least one support layer in the vertical direction, and each support layer is formed by connecting a plurality of unit cells in sequence along the horizontal left-right and front-back directions. Specifically, each unit cell can be regarded as an independent unit, and the shape occupied by the unit cells in the present embodiment in space can be roughly simulated as a square, and the squares can be connected in a plane densely paved manner to form a support layer. In the present embodiment, two support layers are provided, and the two support layers are arranged in the vertical direction.

[0043] Reference Figure 1The unit cell has four upper arms extending obliquely downward and outward relative to the horizontal direction from the top, and four lower arms extending obliquely upward and outward relative to the horizontal direction from the bottom; the top ends of the upper arms are connected to form an upper connecting portion, the bottom ends of the lower arms are connected to form a lower connecting portion, and each of the upper arms corresponds to the position of a lower arm in the vertical direction, and the bottom ends of each pair of corresponding upper arms and the top ends of the lower arms are connected to form a middle connecting portion; in the same unit cell, the projection shape of the four upper arms on the horizontal first projection plane is the same as the projection shape of the four lower arms on the first projection plane; the projection shape of the unit cell on the first projection plane is plane-symmetrical relative to the first axis extending left and right and the second axis extending front and back, and each pair of corresponding upper arms and lower arms are respectively located in four areas divided by the first axis and the second axis.

[0044] At the same time, in the same unit cell, on a second projection plane perpendicular to the front-to-back direction, the projection shapes of the two pairs of corresponding upper arms and lower arms located on the front side are the same as the projection shapes of the two pairs of corresponding upper arms and lower arms located on the back side; the projection shapes of the unit cell on the second projection plane are both plane-symmetrical relative to the third axis extending left and right and the fourth axis extending up and down, the four upper arms are all located above the third axis and are divided into two groups, which are respectively located on the left and right sides of the fourth axis, and the four lower arms are all located below the third axis and are divided into two groups, which are respectively located on the left and right sides of the fourth axis.

[0045] Preferably, the upper support arm and the lower support arm have the same shape.

[0046] In addition, the unit cell is surrounded by the upper arm and the lower arm to form a chamber, and the chamber forms a first opening of the same shape on the second projection plane in the front-to-back direction, and forms a second opening of the same shape on the third projection plane perpendicular to the left-to-right direction in the left-to-right direction. The maximum distance of the projection of the first opening on the second projection plane in the vertical direction is smaller than the maximum distance in the left-to-right direction. The maximum distance of the projection of the second opening on the third projection plane in the vertical direction is smaller than the maximum distance in the front-to-back direction.

[0047] The structure of the unit cell is described in detail below.

[0048] Reference Figure 1The unit cell includes four upper arms and four lower arms. The upper arms extend outwardly from top to bottom and tilt, and the lower arms extend outwardly from bottom to top. The outward here refers to the inside relative to the center of the entire unit cell. The four upper arms form the upper half of the unit cell, and the four lower arms form the lower half of the unit cell. The upper half can be regarded as the four upper arms opening downward, and the lower half can be regarded as the four lower arms opening upward. The top ends of the four upper arms are connected to form an upper connecting portion, and the bottom ends of the four lower arms are connected to form a lower connecting portion. Taking the above arms as an example, the connection here means that the top ends of the four upper arms all point to the same end point during the process of tilting and extending. In the process of extending toward the end point, the sides of the four upper arms are connected to each other as a whole, thereby forming an upper connecting portion at the top of the unit cell, and the top of the upper connecting portion forms a platform-like structure. Similarly, taking the lower arms as an example, the connection here means that the bottom ends of the four lower arms all point to the same endpoint during the process of tilting and extending, and the sides of the four lower arms are connected to each other as a whole during the process of extending toward the endpoint, thereby forming a lower connection portion at the bottom of the unit cell, and the bottom of the lower connection portion forms a platform-like structure. This platform-like structure is conducive to the unit cell to form a connection with the unit cells above and below it with a large contact area.

[0049] The four upper arms and the four lower arms correspond to each other in the vertical direction, that is, one upper arm has a lower arm corresponding to its position, and the bottom end of the upper arm is connected to the top end of the lower arm to form a middle connection. The middle connection can also be regarded as an upper arm and a lower arm extending toward the same end point, and the sides of the two arms touch and connect as a whole, and two platform-like surfaces are formed on the outside of the middle connection, and the two surfaces are roughly at a right angle to each other. This platform-like structure of the middle connection is conducive to the unit cell and the unit cells on its left and right to form a connection with a large contact area.

[0050] Reference Figure 2 , the first projection plane is a horizontal plane, which can be regarded as the structure of the unit cell when looking down from top to bottom. Figure 2 , a first axis extending in the left-right direction and a second axis extending in the front-back direction are shown, and the orthogonal first axis and second axis intersect at the center of the projection shape of the unit cell, dividing the projection shape of the unit cell into four regions. According to the conventional rectangular coordinate system, the four regions in the diagram 3 are respectively referred to as the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant.

[0051] The projection shapes of the four upper arms on the first projection plane are the same as the projection shapes of the four lower arms on the first projection plane. That is to say, the upper connecting portion and the lower connecting portion have the same shape and size on the first projection plane, and each upper arm has the same shape and size as its corresponding lower arm on the first projection plane. Of course, this consistency at this level can only mean that the upper and lower halves of the unit cell have the same shape and size on the first projection plane.

[0052] In addition, the projection shape of the unit cell on the first projection plane is plane-symmetric with respect to the first axis, and is also plane-symmetric with respect to the second axis. That is, on the first projection plane, the front and rear parts of the unit cell have the same shape, and the left and right parts of the unit cell also have the same shape. From the projection shape of the first projection plane, the unit cell can be regarded as a structure that is rotationally symmetric in the vertical axis.

[0053] Taking the upper arms as an example, the four upper arms are respectively located in the first quadrant, second quadrant, third quadrant and fourth quadrant of the coordinate system formed by dividing the first axis and the second axis, and the extension directions of the four upper arms are all at a 45° angle relative to the first axis and the second axis, thereby forming a symmetrical shape.

[0054] Reference Figure 3 , the second projection plane is a vertical plane, and the second projection plane divides the unit cell into a front part and a rear part along the middle position, and both parts include two upper arms and two lower arms. At the same time, Figure 3 4 shows a third axis extending in the left-right direction and a fourth axis extending in the up-down direction, and the orthogonal third axis and fourth axis intersect at the center of the projection shape of the unit cell, dividing the projection shape of the unit cell into four regions. According to the conventional rectangular coordinate system, the four regions in the diagram 4 are respectively referred to as the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant.

[0055] The projection shapes of the two pairs of corresponding upper and lower arms on the front side are the same as the projection shapes of the two pairs of corresponding upper and lower arms on the rear side. In other words, the front and rear parts of the unit cell have the same shape and size on the second projection plane. Of course, this consistency at this level can only mean that the front and rear parts of the unit cell have the same shape and size on the second projection plane.

[0056] In addition, the projection shape of the unit cell on the second projection plane is plane symmetric with respect to the third axis and also plane symmetric with respect to the fourth axis. That is, on the second projection plane, the upper and lower halves of the unit cell have the same shape, and the left and right parts of the unit cell also have the same shape.

[0057] From the above description, it can be seen that the shape of the unit cell is a selectively symmetrical structure along the vertical axis, which can ensure that when the unit cell is subjected to force, the force transmission on the four upper arms and the lower arms is uniform.

[0058] In addition, the shapes of the upper arm and the lower arm are preferably the same. When the unit cell is subjected to force, the deformation of the upper arm and the lower arm will react in the same way according to the force transmission, so that the deformation and recovery of the unit cell can be synchronized from top to bottom, the support of the unit cell is more stable, and the rebound and shock absorption effects are more uniform.

[0059] Reference Figure 2 The unit cell is also surrounded by upper and lower arms to form a cavity. Figure 3 , on the second projection plane, the unit cell is formed with two first openings connecting the chamber in the front-to-back direction; Figure 4 On the third projection plane, the unit cell is formed with two second openings connecting the chamber in the left-right direction. The third projection plane is a projection plane perpendicular to the left-right direction.

[0060] Reference Figure 3 , the projection shape of the first opening on the second projection plane is a structure extending in the vertical direction; at the same time, referring to Figure 4 The projection shape of the second opening on the third projection plane is a structure extending in the front-back direction. The difference in the two shapes can make the unit cell not only have a better support and shock-absorbing effect, but also have a higher deformation ability and provide better rebound.

[0061] Reference Figure 1 , the entire support structure is formed by connecting a plurality of unit cells. Specifically, between the unit cells adjacent in the horizontal left-right and front-back directions, the middle connecting parts corresponding in position are connected as one. Between the unit cells adjacent in the vertical direction, the lower connecting part of the unit cell located above is connected as one with the upper connecting part of the unit cell located below. In the horizontal direction, the unit cells are connected as one through the middle connecting part. When the upper connecting part is subjected to force, the middle connecting part expands and deforms outward, but at the same time it will be restricted by other unit cells, so that the deformation degree of the unit cell is reduced, thereby avoiding excessive deformation of the unit cell when it is subjected to force, resulting in a decrease in the shock absorbing performance. The unit cells in the vertical direction are connected as one through the upper connecting part and the lower connecting part. When the unit cell above is subjected to force, the force can be transmitted to the unit cell below. After being transmitted layer by layer, the rebound shock absorbing performance of the entire support structure is improved.

[0062] To further illustrate the shape structure of the above unit cell, the shape structure of the unit cell is described mathematically below.

[0063] In the process of constructing the unit cell, the curved plates along the X, Y and Z directions are first defined by trigonometric functions, and then the phase field φ is used to obtain the symmetrical curved plates in the three directions. Then, Boolean operations are performed to combine the curved plates in the three directions to form the required unit cell.

[0064] Specifically, the complex trigonometric function used to represent the two curved plates in the X direction is defined as:

[0065]

[0066] Among them, p x represents the design period of the unit cell in the x direction on the plane, q x Used to control the relative position of the rod in a single cell, l x You can control the length of the independent variable whose value range is equal to 1, that is, control the thickness of the straight rod in the cell. is the added phase field, defined as follows: In the formula, c controls the curvature of the curved rod, t x represents the natural period of the curved rod, that is, the period of the curved rod shape, s x It is used to control the relative position of the rod in a single unit cell, m controls the bending degree of the curved rod, and r x Controls the degree of symmetry of the symmetrical curved rod.

[0067] The trigonometric functions used to represent the curved plate in the Y direction are defined as:

[0068]

[0069] in,

[0070] The trigonometric functions of the curved plate in the Z direction are defined as:

[0071]

[0072] in,

[0073] Performing Heaviside projection on the defined trigonometric function, we can obtain Figure 5 The curved plate on the left. The Heaviside projection function is defined as follows: Where X represents the independent variable mapped by the Heaviside function, α controls the step degree of the Heaviside function, and a fixed value of α=0.01 is taken in the entire design process. If X>0, H(X) returns 1; if X<0, H(X) returns 0.

[0074] For compact mathematical expression, the two plates in each direction are combined by adding two curved plates together. The resulting three pairs of curved plates are expressed as:

[0075]

[0076] By intersecting the plates with each other in three directions, twelve curved rods are obtained. Finally, these curved rods are combined to form Figure 5 In the unit cell, the intersection and union operations are expressed as:

[0077] In the support structure provided in the first embodiment, at least one support layer is arranged in the vertical direction, and the support layer can play a supporting role. The number of support layers can be adjusted according to actual needs to obtain different degrees of rebound and shock-absorbing performance; wherein the support layer is formed by connecting a plurality of crystal cells in sequence along the horizontal left-right and front-back directions, and each crystal cell is an independent unit, and a complete support structure is formed by connecting a plurality of crystal cells in the horizontal direction; each crystal cell includes four upper arms and four lower arms, the tops of the upper arms are connected to form an upper connection part, the bottoms of the lower arms are connected to form a lower connection part, and the upper arms and the lower arms are connected correspondingly to form a middle connection part, so there is a total of one upper connection part, one lower connection part and four middle connections; and the upper arms in the crystal cells The projection shape of the upper and lower arms is the same as the projection shape of the lower arm, and the unit cell is also in a plane symmetrical shape relative to the first axis and the second axis. This shape allows the unit cell to be subjected to force. Pressure will be applied to the upper connection part, and then the pressure will be transmitted to the lower arm through the upper arm, and the lower connection part plays a supporting role. After that, the entire unit cell will expand and deform outward at the position of the middle connection part due to the downward pressure. At the same time, the upper and lower arms are also deformed, and this deformation is uniform, so as to achieve the purpose of absorbing energy when impacted and play a shock-absorbing role; then when the force is removed, the unit cell recovers the deformation, and plays a rebound role in the process of recovering the deformation; through the deformation and recovery of the unit cell, the support structure can have better shock-absorbing performance and resilience performance.

[0078] Embodiment 2

[0079] The second embodiment of the present invention provides a sole, which adopts the above-mentioned support structure, so that the sole has a good wearing feeling and shock-absorbing support performance. Specifically, the forefoot part, arch part and heel part of the midsole of the sole can adopt the support structure provided by the above embodiment, or only some of them can adopt the support structure provided by the above embodiment.

[0080] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A support structure, characterized in that: include: At least one support layer (1) is provided in the vertical direction, and the support layer (1) is formed by connecting a plurality of unit cells (2) in sequence along the horizontal left-right and front-back directions; The unit cell (2) has four upper arms (3) extending downward and outward from the top in an inclined manner relative to the horizontal direction, and has four lower arms (4) extending upward and outward from the bottom in an inclined manner relative to the horizontal direction; the top ends of the upper arms (3) are connected to form an upper connecting portion (5), the bottom ends of the lower arms (4) are connected to form a lower connecting portion (6), and each of the upper arms (3) corresponds to a lower arm (4) in a vertical direction, and the bottom ends of each pair of corresponding upper arms (3) and the top ends of the lower arms (4) are connected to form a middle connecting portion (7); In the same unit cell (2), the projection shape of the four upper arms (3) on the horizontal first projection plane is the same as the projection shape of the four lower arms (4) on the first projection plane; the projection shape of the unit cell (2) on the first projection plane is plane-symmetrical relative to the first axis extending left and right and the second axis extending front and back, and each pair of corresponding upper arms (3) and lower arms (4) are respectively located in four areas divided by the first axis and the second axis.

2. A support structure as claimed in claim 1, characterized in that: In the same unit cell (2), on a second projection plane perpendicular to the front-back direction, the projection shapes of the two pairs of corresponding upper arms (3) and lower arms (4) located on the front side are the same as the projection shapes of the two pairs of corresponding upper arms (3) and lower arms (4) located on the back side; the projection shapes of the unit cell (2) on the second projection plane are both plane-symmetrical with respect to a third axis extending left and right and a fourth axis extending up and down, the four upper arms (3) are all located above the third axis and are divided into two groups and are respectively located on the left and right sides of the fourth axis, and the four lower arms (4) are all located below the third axis and are divided into two groups and are respectively located on the left and right sides of the fourth axis.

3. A support structure as claimed in claim 2, characterized in that: In each of the unit cells (2), the upper arm (3) and the lower arm (4) have the same shape.

4. A support structure as claimed in claim 3, characterized in that: Between the adjacent unit cells (2) in the horizontal left-right and front-back directions, the corresponding middle connecting parts (7) are connected as a whole.

5. A support structure as claimed in claim 4, characterized in that Between the unit cells (2) adjacent to each other in the vertical direction, the lower connecting portion (6) of the unit cell (2) located above and the upper connecting portion (5) of the unit cell (2) located below are connected as a whole.

6. A support structure as claimed in claim 5, characterized in that: The unit cell (2) is surrounded by the upper arm (3) and the lower arm (4) to form a chamber (8), and the chamber (8) forms a first opening (9) of the same shape on a second projection plane in the front-to-back direction, and forms a second opening (10) of the same shape on a third projection plane perpendicular to the left-to-right direction in the left-to-right direction.

7. A support structure as claimed in claim 6, characterized in that: The maximum distance of the projection of the first opening (9) on the second projection plane in the vertical direction is smaller than the maximum distance in the left-right direction.

8. A support structure as claimed in claim 7, characterized in that: The maximum distance of the projection of the second opening (10) on the third projection plane in the vertical direction is smaller than the maximum distance in the front-rear direction.

9. A shoe sole, characterized in that: A supporting structure as described in any one of claims 1 to 8 is adopted.

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