Sole rebound cushioning structure and sole

Abstract

The utility model discloses a sole springback cushioning structure and sole, sole springback cushioning structure comprises at least one support layer, the support layer is formed by connecting a plurality of cushioning units in the horizontal direction, four upper support arms obliquely extend from the top of each cushioning unit downwards and outwards relative to the horizontal direction, four lower support arms obliquely extend upwards and outwards from the bottom 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 sole springback cushioning structure is applied to a sole, the springback and cushioning performance of the sole can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe soles, in particular to a shoe sole rebound and shock absorption structure and a shoe sole. Background Art

[0002] With the development of social economy and the continuous improvement of people's material living standards, more and more people attach importance to health and participate more in sports and fitness in daily life. Among them, during sports such as running, due to the action of inertia, at the moment when the bottom of the sports person's shoes touches the ground, the shoe sole will be subjected to the downward pressure exerted by the gravity of the human body itself on the shoe sole, as well as the counter impact force exerted by the ground on it (generally equivalent to 3 to 5 times the human body weight). This impact force is likely to cause certain injuries to the knee joint and / or ankle joint and other human structures of the sports person. Therefore, shoes are foot products that protect the legs and feet and other parts from being injured, and the shock absorption function of shoes is very important and necessary.

[0003] Many shoes with shock absorption functions on the existing market improve on the material or structure of the shoe sole. For example, in terms of the shoe sole material, a foamed thermoplastic polyurethane material with better shock absorption effect is used. In terms of the shoe sole structure, structures such as air cushions and shock absorption columns are designed. However, for the improvement of the shoe sole material, there are differences in the shock absorption performance required at different positions of the shoe sole, and the shoe sole made of the same material cannot meet this requirement; for the improvement of the shoe sole structure, there are problems such as the overall structure being too hard and the comfort being low. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background art, and provide a shoe sole rebound and shock absorption structure and a shoe sole. When the shoe sole rebound and shock absorption structure is applied to the shoe sole, the rebound and shock absorption performance of the shoe sole can be improved.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Technical Solution 1: A sole rebound and shock absorption structure, which includes: at least one layer of support layer provided in the vertical direction, and the support layer is formed by sequentially connecting a plurality of shock absorption units in the horizontal left - right and front - back directions; each shock absorption unit 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 tops of the upper arms are joined to form an upper connection part, the bottoms of the lower arms are joined to form a lower connection part, and each upper arm corresponds to a lower arm in the vertical position, and the bottom of each pair of corresponding upper arms and the top of the lower arm are joined to form a middle connection part; in the same shock absorption unit, the projection shapes of the four upper arms on the horizontal first projection plane are the same as the projection shapes of the four lower arms on the first projection plane; the projection shape of the shock absorption unit on the first projection plane is symmetric with respect to the first axis extending left - right and the second axis extending front - back, and each pair of corresponding upper arms and lower arms are respectively located in the four regions formed by dividing with the first axis and the second axis.

[0007] Technical Solution 2 based on Technical Solution 1: In the same shock absorption unit, on the second projection plane perpendicular to the front - 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 shape of the shock absorption unit on the second projection plane is symmetric with respect to the third axis extending left - right and the fourth axis extending up - down, and the four upper arms are all located above the third axis and are divided into two groups 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 respectively located on the left and right sides of the fourth axis.

[0008] Technical Solution 3 based on Technical Solution 2: In each shock absorption unit, the upper arms and the lower arms have the same shape.

[0009] Technical Solution 4 based on Technical Solution 3: Between the shock absorption units adjacent in the horizontal left - right and front - back directions, the corresponding middle connection parts are connected as a whole.

[0010] Technical Solution 5 based on Technical Solution 4: Between the shock absorption units adjacent in the vertical direction, the lower connection part of the shock absorption unit located above is connected as a whole with the upper connection part of the shock absorption unit located below.

[0011] Technical Solution 6 based on Technical Solution 5: The shock absorption unit is formed with a chamber surrounded by the upper arms and the lower arms, and the chamber forms a first opening with the same shape on the second projection plane in the front - back direction, and forms a second opening with the same shape on the third projection plane perpendicular to the left - right direction in the left - right direction.

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

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

[0014] In addition, the present utility model also provides technical solution nine: A sole, which adopts the sole rebound and shock absorption structure according to any one of the above technical solutions one to eight.

[0015] As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the sole rebound and shock absorption structure provided by technical solution one, at least one support layer is provided in the vertical direction. The support layer can play a supporting role, and the number of support layers can be adjusted according to actual needs to obtain different degrees of rebound and shock absorption performance. Among them, the support layer is formed by sequentially connecting a plurality of shock absorption units in the horizontal left-right and front-back directions. Each shock absorption unit is an independent unit, and a complete sole rebound and shock absorption structure is formed by connecting a plurality of shock absorption units in the horizontal direction. Each shock absorption unit 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 correspondingly connected to form a middle connection part. Therefore, there is one upper connection part, one lower connection part and four middle connection parts in total. And the projected shape of the upper arm in the shock absorption unit is the same as the projected shape of the lower arm. The shock absorption unit is also symmetric in plane with respect to both the first axis and the second axis. This shape enables the pressure to be applied to the upper connection part when the shock absorption unit is stressed. Then the pressure will be transmitted to the lower arm through the upper arm, and the lower connection part plays a supporting role. Then the entire shock absorption unit expands and deforms outward at the position of the middle connection part due to the downward pressure, and at the same time, the upper arm and the lower arm also deform, and this deformation is uniform, so as to achieve the purpose of absorbing energy when being impacted and play a shock absorption role. After that, when the force is removed, the shock absorption unit recovers its deformation, and the process of recovering the deformation plays a role of rebound. Through the deformation and recovery of the shock absorption unit, the sole rebound and shock absorption structure can have good shock absorption performance and rebound performance.

[0017] In technical solution two, the projected shapes of the upper arm and the lower arm in the shock absorption unit on the second projection plane are defined. The shock absorption unit is uniform and symmetric in the front-back direction, and can achieve a better rebound and shock absorption effect.

[0018] In Technical Solution 3, the upper arm and the lower arm of the shock absorption unit have the same shape. When the shock absorption unit is stressed, the deformation conditions of the upper arm and the lower arm will make the same response according to the force transmission conditions, enabling the deformation and recovery of the shock absorption unit to be synchronized from top to bottom. The support of the shock absorption unit is more stable, and at the same time, the rebound and shock absorption effects are more uniform and consistent.

[0019] In Technical Solution 4, the shock absorption units are connected into one body through the middle connecting part in the horizontal direction. When the upper connecting part is stressed, the middle connecting part expands and deforms outwards, but at the same time, it will be restricted by other shock absorption units, reducing the degree of deformation of the shock absorption unit. This can prevent the shock absorption performance from decreasing due to excessive deformation when the shock absorption unit is stressed.

[0020] In Technical Solution 5, the shock absorption units in the vertical direction are connected into one body through the upper connecting part and the lower connecting part. When the upper shock absorption unit is stressed, the force can be transmitted to the lower shock absorption unit. Through layer-by-layer transmission, the rebound and shock absorption performance of the entire sole rebound and shock absorption structure is improved.

[0021] In Technical Solution 6, the shock absorption unit surrounds to form a chamber through the upper arm and the lower arm, and a first opening and a second opening are formed. The hollow chamber can reduce the weight of the entire sole rebound and shock absorption structure, and at the same time, the formed openings can provide a space for the deformation of the shock absorption unit.

[0022] In Technical Solution 7, the maximum distance in the vertical direction of the projection of the first opening on the second projection plane is less than its maximum distance in the left-right direction, that is, the first opening is generally in a vertically extending shape. This can enable the upper arm and the lower arm to provide a better shock absorption effect when deforming.

[0023] In Technical Solution 8, the maximum distance in the vertical direction of the projection of the second opening on the third projection plane is less than its maximum distance in the front-back direction, that is, the second opening is generally in a horizontally extending shape. This can enable the upper arm and the lower arm to form a larger deformation amplitude when deforming and provide better rebound.

[0024] In Technical Solution 9, a sole is provided. This sole adopts the above-mentioned sole rebound and shock absorption structure, so it has good shock absorption and support 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 following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1Schematic diagram of the sole rebound and shock absorption structure provided by the first embodiment of the present utility model;

[0027] Figure 2 is Figure 1 Schematic diagram of the projection shape of the sole rebound and shock absorption structure on the first projection plane;

[0028] Figure 3 is Figure 1 Schematic diagram of the projection shape of the sole rebound and shock absorption structure on the second projection plane;

[0029] Figure 4 is Figure 1 Schematic diagram of the projection shape of the sole rebound and shock absorption structure on the third projection plane;

[0030] Figure 5 is Figure 1 Schematic diagram of the construction of a single shock absorption unit in the sole rebound and shock absorption structure.

[0031] Main reference numeral description:

[0032] Support layer 1; shock absorption unit 2; upper arm 3; lower arm 4; upper connecting part 5; lower connecting part 6; middle connecting part 7; chamber 8; first opening 9; second opening 10. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are the preferred embodiments of the present utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the claims, the specification and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0035] In the claims, the specification and the above-mentioned accompanying drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.

[0036] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using the terms "fixed connection" or "fixedly connected", it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is to say, it includes non-detachable fixed connection, detachable fixed connection, being integrated and fixed connection through other devices or elements.

[0037] In the claims, the description and the above-mentioned drawings of the present utility model, when using the terms "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0038] Embodiment 1

[0039] Embodiment 1 of the present utility model provides a sole rebound and shock absorption structure, which can be applied to the sole and used as the midsole of the sole. This embodiment will be described with the sole rebound and shock absorption structure as the main body.

[0040] Referring to Figure 1 , which shows the sole rebound and shock absorption structure provided in this embodiment, and at the same time referring to Figure 1 , which shows Figure 1 the structure of a single shock absorption unit 2 in the sole rebound and shock absorption structure in

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

[0042] Referring to Figure 1 , the sole rebound and shock absorption structure is provided with at least one layer of support layer 1 in the vertical direction, and each support layer 1 is formed by connecting a plurality of shock absorption units 2 in sequence along the horizontal left-right and front-back directions. Specifically, each shock absorption unit 2 can be regarded as an independent unit. The shape occupied by the shock absorption unit 2 in this embodiment in space can be roughly approximated as a square, and the squares can be connected in a plane tiling manner to form the support layer 1. There are two layers of support layers 1 in this embodiment, and these two layers of support layers 1 are arranged in the vertical direction.

[0043] Referring to Figure 1, the shock absorption unit 2 extends four upper arms 3 obliquely downward and outward relative to the horizontal direction from the top, and extends four lower arms 4 obliquely upward and outward relative to the horizontal direction from the bottom; the tops of the upper arms 3 are joined to form an upper connection part 5, the bottoms of the lower arms 4 are joined to form a lower connection part 6, and each upper arm 3 corresponds to a lower arm 4 in the vertical position. The bottom end of each pair of corresponding upper arms 3 and the top end of the lower arm 4 are joined to form a middle connection part 7; in the same shock absorption unit 2, the projection shapes of the four upper arms 3 on the horizontal first projection plane are the same as the projection shapes of the four lower arms 4 on the first projection plane; the projection shape of the shock absorption unit 2 on the first projection plane is symmetric with respect 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 the four regions formed by the division of the first axis and the second axis.

[0044] At the same time, in the same shock absorption unit 2, on the 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 shape of the shock absorption unit 2 on the second projection plane is symmetric with respect to the third axis extending left and right and the fourth axis extending up and down, and 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.

[0045] Preferably, the upper arms 3 and the lower arms 4 have the same shape.

[0046] In addition, the shock absorption unit 2 is surrounded by the upper arms 3 and the lower arms 4 to form a chamber 8. The chamber 8 forms a first opening 9 with the same shape on the second projection plane in the front-back direction, and forms a second opening 10 with the same shape on the third projection plane perpendicular to the left-right direction in the left-right direction. Among them, the maximum distance in the vertical direction of the projection of the first opening 9 on the second projection plane is less than its maximum distance in the left-right direction. The maximum distance in the vertical direction of the projection of the second opening 10 on the third projection plane is less than its maximum distance in the front-back direction.

[0047] The structure of the shock absorption unit 2 will be described in detail below.

[0048] Refer to Figure 1, the shock absorption unit 2 includes four upper arms 3 and four lower arms 4. The upper arms 3 extend obliquely outward from top to bottom, and the lower arms 4 extend obliquely outward from bottom to top. Here, "outward" means relative to the center position of the entire shock absorption unit 2, which is considered the interior. The four upper arms 3 form the upper half of the shock absorption unit 2, and the four lower arms 4 form the lower half of the shock absorption unit 2. The upper half can be regarded as the four upper arms 3 opening downward, and the lower half can be regarded as the four lower arms 4 opening upward. The tops of the four upper arms 3 are joined together to form an upper connection part 5, and the bottoms of the four lower arms 4 are joined together to form a lower connection part 6. Taking the upper arm 3 as an example, here "joined" means that during the oblique extension of the four upper arms 3, their tops all point to the same endpoint. During the extension towards this endpoint, the sides of the four upper arms 3 are connected to each other as a whole, thereby forming an upper connection part 5 at the top of the shock absorption unit 2, and the top of the upper connection part 5 forms a structure similar to a platform. Similarly, taking the lower arm 4 as an example, here "joined" means that during the oblique extension of the four lower arms 4, their bottoms all point to the same endpoint. During the extension towards this endpoint, the sides of the four lower arms 4 are connected to each other as a whole, thereby forming a lower connection part 6 at the bottom of the shock absorption unit 2, and the bottom of the lower connection part 6 forms a structure similar to a platform. This structure similar to a platform is conducive to the shock absorption unit 2 forming a connection with a relatively large contact area with the shock absorption units 2 above and below it.

[0049] Among them, the positions of the four upper arms 3 and the four lower arms 4 correspond one by one in the vertical direction. That is to say, one upper arm 3 has a lower arm 4 corresponding to its position, and at the same time, the bottom end of this upper arm 3 is joined to the top end of this lower arm 4 to form a middle connection part 7. The middle connection part 7 can also be regarded as a situation where one upper arm 3 and one lower arm 4 extend towards the same endpoint, and their sides collide and are connected as a whole. On the outside of the middle connection part 7, two platform-like surfaces are formed, and these two surfaces are approximately at a right angle to each other. This structure similar to a platform of the middle connection part 7 is conducive to the shock absorption unit 2 forming a connection with a relatively large contact area with the shock absorption units 2 on its left and right.

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

[0051] Among them, the projected shape of the four upper arms 3 on the first projection plane is the same as that of the four lower arms 4 on the first projection plane. That is to say, the shape dimensions of the upper connecting part 5 and the lower connecting part 6 on the first projection plane are the same, and at the same time, the shape dimensions of each upper arm 3 and its corresponding lower arm 4 on the first projection plane are the same. Of course, this consistency only shows that on the first projection plane, the upper half and the lower half of the shock absorption unit 2 have the same shape dimensions at this level.

[0052] In addition, the projected shape of the shock absorption unit 2 on the first projection plane is plane-symmetrical with respect to the first axis and also plane-symmetrical with respect to the second axis. That is to say, on the first projection plane, the shapes of the front and rear parts of the shock absorption unit 2 are the same, and the shapes of the left and right parts of the shock absorption unit 2 are also the same. Judging from the projected shape on the first projection plane, the shock absorption unit 2 can be regarded as a structure that is rotationally symmetric about the vertical axis.

[0053] Taking the upper arm 3 as an example, the four upper arms 3 are respectively located in the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant of the coordinate system formed by the division of the first axis and the second axis, and the extending directions of the four upper arms 3 are all at an angle of 45° with respect to the first axis and the second axis, thus forming a symmetric shape.

[0054] Refer to Figure 3 , the second projection plane is a vertical plane, and the second projection plane divides the shock absorption unit 2 into a front part and a rear part along the middle position, and both parts include two upper arms 3 and two lower arms 4. At the same time, Figure 3 shows a third axis extending in the left-right direction and a fourth axis extending in the up-down direction. The orthogonal third axis and fourth axis intersect at the central position of the projected shape of the shock absorption unit 2, dividing the projected shape of the shock absorption unit 2 into four regions. According to the conventional rectangular coordinate system, the four regions in FIG. 4 are respectively called the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant.

[0055] Among them, the projected shapes of the two pairs of corresponding upper arms 3 and lower arms 4 located on the front side are the same as those of the two pairs of corresponding upper arms 3 and lower arms 4 located on the rear side. That is to say, the shape dimensions of the front part and the rear part of the shock absorption unit 2 on the second projection plane are the same. Of course, this consistency only shows that on the second projection plane, the front part and the rear part of the shock absorption unit 2 have the same shape dimensions at this level.

[0056] In addition, the projected shape of the shock absorption unit 2 on the second projection plane is plane-symmetrical with respect to the third axis and also plane-symmetrical with respect to the fourth axis. That is to say, on the second projection plane, the shapes of the upper half and the lower half of the shock absorption unit 2 are the same, and the shapes of the left and right parts of the shock absorption unit 2 are also the same.

[0057] As can be seen from the above description, the shape of the shock absorption unit 2 is a structure that is selectively symmetric along the axial direction in the vertical direction. This can ensure that when the shock absorption unit 2 is stressed, the force transmission is uniform on the four upper arms 3 and lower arms 4.

[0058] In addition, the shapes of the upper arm 3 and the lower arm 4 are preferably the same. When the shock absorption unit 2 is stressed, the deformation conditions of the upper arm 3 and the lower arm 4 will make the same reaction according to the force transmission situation, so that the deformation and recovery of the shock absorption unit 2 can be synchronized from top to bottom, the support of the shock absorption unit 2 is more stable, and at the same time the rebound and shock absorption effects are more uniform.

[0059] Refer to Figure 2 , the shock absorption unit 2 also forms a chamber 8 surrounded by the upper arm 3 and the lower arm 4. Refer to Figure 3 , on the second projection plane, the shock absorption unit 2 is formed with two first openings 9 that communicate with the chamber 8 in the front-back direction; refer to Figure 4 , on the third projection plane, the shock absorption unit 2 is formed with two second openings 10 that communicate with the chamber 8 in the left-right direction. The third projection plane is a projection plane perpendicular to the left-right direction.

[0060] Refer to Figure 3 , the projection shape of the first opening 9 on the second projection plane is a structure extending in the vertical direction; at the same time refer to Figure 4 , the projection shape of the second opening 10 on the third projection plane is a structure extending in the front-back direction. The difference in their shapes enables the shock absorption unit 2 to not only have a good support and shock absorption effect, but also have a high deformation ability and provide better rebound.

[0061] Refer to Figure 1 , the entire sole rebound and shock absorption structure is formed by connecting multiple shock absorption units 2. Specifically, between the shock absorption units 2 adjacent in the horizontal left-right and front-back directions, the position-corresponding middle connecting parts 7 are connected as a whole. Between the shock absorption units 2 adjacent in the vertical direction, the lower connecting part 6 of the upper shock absorption unit 2 and the upper connecting part 5 of the lower shock absorption unit 2 are connected as a whole. The shock absorption units 2 are connected as a whole through the middle connecting parts 7 in the horizontal direction. When the upper connecting part 5 is stressed, the middle connecting parts 7 expand and deform outwards, but at the same time they will be restricted by other shock absorption units 2, so that the deformation degree of the shock absorption unit 2 is reduced. Therefore, it can be avoided that the shock absorption performance decreases due to excessive deformation of the shock absorption unit 2 when it is stressed. The shock absorption units 2 in the vertical direction are connected as a whole through the upper connecting part 5 and the lower connecting part 6. When the upper shock absorption unit 2 is stressed, the force can be transmitted to the lower shock absorption unit 2, and through layer-by-layer transmission, the rebound and shock absorption performance of the entire sole rebound and shock absorption structure can be improved.

[0062] To further illustrate the shape and structure of the shock absorption unit 2, the following describes the shape and structure of the shock absorption unit 2 in a mathematical way.

[0063] In the process of constructing the shock absorption unit 2, first, curved plates along the X, Y, and Z directions are defined by trigonometric functions, then symmetric curved plates in three directions are obtained using the phase field φ, and then Boolean operations are performed to combine the curved plates in three directions to form the required shock absorption unit 2.

[0064] Specifically, the composite trigonometric function representing the two curved plates in the X direction is defined as:

[0065]

[0066] where p x represents the design period of the shock absorption unit 2 in the x direction on the plane, q x is used to control the relative position of the rod in a single cell, l x 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 is used to control the relative position of the rod in a single shock absorption unit 2, m controls the degree of zigzag of the curved rod, and r x controls the symmetry degree of the symmetric curved rod.

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

[0068]

[0069] where

[0070] The trigonometric function of the curved plate in the Z direction is defined as:

[0071]

[0072] where

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

[0074] For compact mathematical representation, by adding two curved plates, the two plates in each direction are combined, and the resulting three pairs of curved plates are represented 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 the shock absorption unit 2 in , and the intersection and union operations are represented as:

[0077] In the sole rebound shock absorption structure provided by the first embodiment, at least one support layer 1 is arranged in the vertical direction. The support layer 1 can play a supporting role, and the number of the support layers 1 can be adjusted according to actual needs to obtain different degrees of rebound shock absorption performance. Among them, the support layer 1 is formed by sequentially connecting a plurality of shock absorption units 2 in the horizontal left-right and front-back directions. Each shock absorption unit 2 is an independent unit, and a complete sole rebound shock absorption structure is formed by connecting a plurality of shock absorption units 2 in the horizontal direction. Each shock absorption unit 2 includes four upper support arms 3 and four lower support arms 4. The tops of the upper support arms 3 are connected to form an upper connection part 5, the bottoms of the lower support arms 4 are connected to form a lower connection part 6, and the upper support arms 3 and the lower support arms 4 are correspondingly connected to form a middle connection part 7. Therefore, there is one upper connection part 5, one lower connection part 6 and four middle connection parts 7 in total. And the projection shape of the upper support arm 3 in the shock absorption unit 2 is the same as the projection shape of the lower support arm 4. The shock absorption unit 2 is also symmetric about the first axis and the second axis in a plane. This shape enables when the shock absorption unit 2 is stressed, the pressure will be applied to the upper connection part 5, and then the pressure will be transmitted to the lower support arm 4 through the upper support arm 3. The lower connection part 6 plays a supporting role. Then, the entire shock absorption unit 2 expands and deforms outward at the position of the middle connection part 7 due to the downward pressure, and at the same time, the upper support arm 3 and the lower support arm 4 also deform, and this deformation is uniform, so as to achieve the purpose of absorbing energy when being impacted and play a shock absorption role. Then when the stress is removed, the shock absorption unit 2 recovers its deformation, and plays a rebound role during the process of recovering the deformation. Through the deformation and recovery of the deformation of the shock absorption unit 2, the sole rebound shock absorption structure can have better shock absorption performance and rebound performance.

[0078] Embodiment Two

[0079] The second embodiment of the present invention provides a sole. The sole adopts the above-mentioned sole rebound shock absorption structure, so it has a better wearing feel and shock absorption and support performance. Specifically, the forefoot part, the arch part and the heel part of the midsole of the sole can all adopt the sole rebound shock absorption structure provided by the above embodiment, or only some parts thereof adopt the sole rebound shock absorption structure provided by the above embodiment.

[0080] The descriptions of the above specification and embodiments are used to explain the protection scope of the present utility model, but do not constitute a limitation to the protection scope of the present utility model. Modifications, equivalent replacements or other improvements to the embodiments of the present utility model or some of its technical features obtained by those of ordinary skill in the art through logical analysis, reasoning or limited experiments in combination with common general knowledge, ordinary technical knowledge in this field and / or the prior art under the inspiration of the present utility model or the above embodiments shall all be included within the protection scope of the present utility model.

Claims

1. A sole rebound shock-absorbing 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 shock absorbing units (2) in sequence along the horizontal left-right and front-back directions; The shock absorbing unit (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 shock-absorbing unit (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 shock-absorbing unit (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 sole rebound shock-absorbing structure as claimed in claim 1, characterized in that: In the same shock absorbing unit (2), on a second projection plane perpendicular to the front-to-back direction, the projection shapes of the two pairs of corresponding upper supporting arms (3) and lower supporting arms (4) located on the front side are the same as the projection shapes of the two pairs of corresponding upper supporting arms (3) and lower supporting arms (4) located on the rear side; the projection shapes of the shock absorbing unit (2) on the second projection plane are both plane-symmetrical relative to a third axis extending left and right and a fourth axis extending up and down, the four upper supporting arms (3) are all located above the third axis and are divided into two groups, respectively located on the left and right sides of the fourth axis, and the four lower supporting arms (4) are all located below the third axis and are divided into two groups, respectively located on the left and right sides of the fourth axis.

3. A sole rebound shock-absorbing structure as claimed in claim 2, characterized in that: In each of the shock absorbing units (2), the upper support arm (3) and the lower support arm (4) have the same shape.

4. A sole rebound shock-absorbing structure as claimed in claim 3, characterized in that: Between the adjacent shock absorbing units (2) in the horizontal left-right and front-back directions, the corresponding middle connecting parts (7) are connected as one body.

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

6. The sole rebound shock-absorbing structure according to claim 5, characterized in that: The shock absorbing unit (2) is surrounded by the upper support arms (3) and the lower support arms (4) to form a chamber (8), wherein 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. The sole rebound shock absorbing structure according to 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. The sole rebound shock-absorbing structure according to 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: The sole rebound and shock-absorbing structure as described in any one of claims 1 to 8 is adopted.

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