A midsole, a cushioning sole, and a shoe

Abstract

The application discloses a midsole of a shoe sole, a shock-absorbing shoe sole and a shoe. The midsole of the shoe sole comprises an upper supporting sheet, a lower supporting sheet and at least two air bags, each air bag is clamped between the upper supporting sheet and the lower supporting sheet and is arranged along the longitudinal axis direction of the shoe sole; the air bag is filled with 0.6-1.2 atmospheres of air, and a through hole penetrating through the inner side of the shoe sole from the outer side of the shoe sole is arranged in the air bag. The shock-absorbing shoe sole comprises the above midsole. The shoe comprises the above shock-absorbing shoe sole. The midsole of the shoe sole, the shock-absorbing shoe sole and the shoe provided by the application are synchronous deformation under the action of the upper supporting sheet and the lower supporting sheet, the air bag has certain deformation capacity and deformation recovery capacity, so that good shock-absorbing performance, rebound performance and supporting function can be provided at different positions of the shoe sole, and the shoe is more light.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of footwear, in particular to a midsole of a shoe sole, a shock-absorbing shoe sole and a shoe. BACKGROUND

[0002] The prior art mainly uses the characteristics of the shoe sole material, open air hole devices or external air cushion structures to make the sports shoes have a rebounding and shock-absorbing effect. In order to provide better shock-absorbing effect, most sports shoe manufacturers generally use soft shock-absorbing materials, but this cannot completely meet the needs of consumers. The structure of most sports shoes includes a lower sole for contacting the ground, an upper sole for contacting the bottom of the foot and a midsole between the upper sole and the lower sole. The existing improvement of the shock-absorbing function of the shoe is mainly the improvement of the midsole. For example, the patent CN109654620A discloses that the upper sole part and the lower sole part are integrally formed to constitute a midsole, the midsole has a plurality of closed air chambers, the structure of the closed air chambers is single, the shock-absorbing function is not clear and the rebounding performance is general. SUMMARY

[0003] The purpose of the present application is to overcome the above-mentioned defects or problems in the background art and provide a midsole of a shoe sole, a shock-absorbing shoe sole and a shoe with good shock-absorbing performance and rebounding performance.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] In the first technical solution, a midsole of a shoe sole includes an upper support sheet, a lower support sheet and at least two air bags, each air bag is clamped between the upper support sheet and the lower support sheet and arranged along the longitudinal axis direction of the shoe sole; the air bag is filled with 0.6-1.2 atmospheres of air, and a through hole penetrating from the outside of the shoe sole to the inside of the shoe sole is further arranged in the air bag.

[0006] Based on the first technical solution, the second technical solution is further provided. In the second technical solution, the upper support sheet and the lower support sheet cooperate to form mounting positions equal in number to the air bags and arranged along the longitudinal axis direction of the shoe sole, and each air bag is arranged in the mounting position to be fixed relative to the upper support sheet and the lower support sheet along the longitudinal axis direction of the shoe sole.

[0007] Based on the second technical solution, the third technical solution is further provided. In the third technical solution, the lower surface of the upper support sheet forms first grooves equal in number to the air bags and arranged along the longitudinal axis direction of the shoe sole, the first grooves are matched with the shapes of the upper parts of the air bags, the upper surface of the lower support sheet forms second grooves corresponding to the first grooves, the second grooves are matched with the shapes of the lower parts of the air bags, and the first grooves and the second grooves cooperate to form the mounting positions.

[0008] Based on the third technical solution, the fourth technical solution is further provided. In the fourth technical solution, the axis of the through hole is perpendicular to the longitudinal axis of the shoe sole.

[0009] Based on technical solution four, technical solution five is further provided, in which, on the longitudinal section of the sole perpendicular to the upper support sheet and the lower support sheet, the outer diameter of each air bag gradually decreases from the heel position to the forefoot position of the sole.

[0010] Based on technical solution five, technical solution six is further provided, in which, at least two adjacent air bags cooperate with the upper support sheet and the lower support sheet to form a deformation cavity, the upper surface of the deformation cavity is convex relative to the lower surface, and the lower surface of the deformation cavity is convex relative to the upper surface.

[0011] Based on technical solution six, technical solution seven is further provided, in which, the air bag is annular.

[0012] Technical solution eight, the present application simultaneously provides a shock-absorbing sole, which comprises the insole of any one of technical solutions one to seven, and further comprises an upper sole and a lower sole, the upper sole is attached to the upper surface of the upper support sheet, and the lower sole is attached to the lower surface of the lower support sheet.

[0013] Based on technical solution eight, technical solution nine is further provided, in which, the hardness of the upper sole is less than that of the upper support sheet, and the hardness of the lower sole is less than that of the lower support sheet.

[0014] The present application simultaneously provides a shoe, which comprises the shock-absorbing sole of any one of technical solutions eight to nine.

[0015] From the above description of the present application, the following beneficial effects of the present application are obtained compared with the prior art:

[0016] 1. In technical solution one, when a person walks, the upper support sheet is stressed and transmits the force to each air bag. Since the air bag is filled with 0.6-1.2 atmospheres of air, and a through hole is provided in the air bag from the outside of the sole to the inside of the sole, each air bag deforms after being stressed to buffer the force. At the same time, each air bag transmits the force to the lower support sheet. After the lower support sheet is subjected to the upward rebounding force from the ground, the lower support sheet exerts an upward force on the air bag. When the deformation degree of the air bag reaches a critical point, the air bag restores the deformation, transmits the force upward, and provides a supporting function and a rebounding function. It can be seen that, by using the present technical solution, each air bag deforms synchronously under the action of the upper support sheet and the lower support sheet, and the air bag has a certain deformation ability and deformation recovery ability, thereby providing good shock-absorbing performance, rebounding performance, and supporting function at different positions of the sole, and the shoe is more lightweight.

[0017] 2. In technical solution two, each air bag is installed in the installation position to be fixed relative to the upper support sheet and the lower support sheet along the longitudinal axis direction of the sole, thereby preventing the air bag from moving forward and backward after being stressed, and making the structure of the insole more stable.

[0018] 3. In technical solution three, a number of first grooves are formed on the lower surface of the upper support piece, and the upper support piece of the lower support piece forms second grooves that correspond one-to-one with the first grooves. The first grooves are adapted to the shape of the upper part of the airbag, and the second grooves are adapted to the shape of the lower part of the airbag. The structure is simple and practical, and it is convenient to assemble the midsole structure.

[0019] 4. In technical solution four, the axis of the through hole is perpendicular to the longitudinal axis of the sole, so the airbag is subjected to more uniform force along its length, resulting in better shock absorption.

[0020] 5. In technical solution five, since the sole experiences the greatest force near the heel and the least force near the forefoot during walking, the outer diameter of each airbag gradually decreases from the heel to the forefoot in the longitudinal section of the sole perpendicular to the upper and lower support plates. This ensures optimal cushioning at the heel and creates different buffering and rebound effects at different locations, which is more in line with human biomechanics and more comfortable. In addition, the thickness of the sole generally decreases gradually from back to front, and the above settings also ensure that it is compatible with the thickness of the sole.

[0021] 6. In technical solution six, the upper surface of the deformation cavity protrudes relative to its lower surface, and the lower surface of the deformation cavity protrudes relative to its upper surface, making the volume of the deformation cavity moderate. This provides sufficient space for the deformation of the air bladder and facilitates the production and processing of the upper and lower support plates. Furthermore, this structural design makes it easier for the upper and lower support plates to transmit force synchronously to each air bladder, thereby resulting in better cushioning effects in all parts of the sole.

[0022] 7. In technical solution seven, the airbag is ring-shaped, which is convenient for production and processing, and also convenient for assembling with the upper support plate and the lower support plate to form a midsole. The ring-shaped airbag deforms and recovers its deformation faster, thus ensuring the cushioning and rebound effect of the sole.

[0023] 8. In technical solution eight, the present invention also provides a shock-absorbing shoe sole, including the midsole of any of the above technical solutions. When a person walks, the upper sole is subjected to force and transmitted to the upper support plate. The upper support plate transmits the force to each airbag. Since the airbag is filled with air at 0.6-1.2 atmospheres and has a through hole that runs from the outside of the sole to the inside, each airbag deforms after being subjected to force, thereby buffering the force. At the same time, each airbag also transmits the force to the lower support plate and then to the lower sole. After the lower sole contacts the ground, it applies upward force. When the deformation of the airbag reaches the critical point, the airbag recovers its deformation, thereby transmitting the force upward and providing support and rebound functions. It can be seen that with this technical solution, each airbag deforms synchronously under the action of the upper and lower support plates. The airbag has a certain deformation capacity and deformation recovery capacity, thus providing good shock absorption, rebound performance and support function at different positions of the sole, and is also lighter.

[0024] 9、In the ninth technical solution, the hardness of the upper bottom is less than that of the upper supporting sheet, and the hardness of the lower bottom is less than that of the lower supporting sheet. After the upper bottom is stressed, the force is uniformly transmitted to the upper supporting sheet. Similarly, after the lower bottom is stressed, the force is uniformly transmitted to the lower supporting sheet, so that the air bag can be deformed and restored, and the good cushioning effect, rebound effect and supporting function of the shoe sole are ensured.

[0025] 10、In the tenth technical solution, the present application also provides a shoe with good cushioning performance, rebound performance and supporting performance, and is more lightweight, and the user wears more comfortably. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description are briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a schematic view of the insole of the shoe sole of the present application;

[0028] Figure 2 It is a schematic view of the shoe sole of the present application;

[0029] Figure 3 It is a schematic view of the stress of the air bag of the shoe sole of the present application when the air bag starts to deform;

[0030] Figure 4 It is a schematic view of the stress of the air bag of the shoe sole of the present application when the air bag starts to deform.

[0031] Main drawing mark explanation:

[0032] Insole 10; upper supporting sheet 11; first recess 111; lower supporting sheet 12; second recess 121; air bag 13; through hole 131; deformation cavity 14; upper bottom 20; lower bottom 30. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] In the claims, specification and above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0035] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0036] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0037] Example 1

[0038] like Figure 1 As shown, a midsole 10 of a shoe sole includes an upper support plate 11, a lower support plate 12, and at least two air bladders 13. The front and rear ends of the upper support plate 11 and the lower support plate 12 are fixed together to form a cavity between them. Each air bladder 13 is sandwiched between the upper support plate 11 and the lower support plate 12 and arranged along the longitudinal axis of the shoe sole, which is also the front-rear direction of the shoe sole. Each air bladder 13 is located in the cavity. The air bladder 13 is filled with air at a pressure of 0.6-1.2 atmospheres. In this embodiment, the air bladder 13 is filled with air at a pressure of 1 atmosphere. The air bladder 13 also has a through hole 131 extending from the outside of the shoe sole to the inside of the shoe sole. The axis of the through hole 131 is perpendicular to the longitudinal axis of the shoe sole. In this embodiment, the air bladder 13 is annular. The annular air bladder 13 is easy to manufacture and processes, and it deforms and recovers its shape more quickly. It should be understood that the airbag 13 can also be in other shapes, as long as it has a through hole that runs through the outer and inner sides of the sole. For example, the airbag 13 can also be conical.

[0039] The upper support plate 11 and the lower support plate 12 cooperate to form an installation position that is equal in number to the number of airbags 13 and arranged along the longitudinal axis of the sole. Each airbag 13 is installed in the installation position and fixed relative to the upper support plate 11 and the lower support plate 12 along the longitudinal axis of the sole.

[0040] Specifically, the lower surface of the upper support sheet 11 forms a first groove 111 equal in number to the air bags 13 and arranged along the longitudinal axis of the sole, the first groove 111 being adapted to the shape of the upper portion of the air bag 13, and the upper surface of the lower support sheet 12 forms a plurality of second grooves 121 corresponding to the first grooves 111, the second grooves 121 being adapted to the shape of the lower portion of the air bag 13, the first grooves 111 and the second grooves 121 cooperating to form mounting positions. In the present embodiment, the first grooves 111 and the second grooves 121 are arc-shaped grooves, the upper arc-shaped surface and the lower arc-shaped surface of the air bag 13 being pasted to the groove bottoms of the first grooves 111 and the second grooves 121, respectively, by means of glue, the structure being simple and practical and facilitating assembly of the midsole 10.

[0041] In specific implementation, in a longitudinal cross section of the sole perpendicular to the upper support sheet 11 and the lower support sheet 12, the outer diameter of each air bag 13 gradually decreases from the heel position to the forefoot position of the sole. That is, the outer diameter and the inner diameter of the annular air bag 13 near the heel are the largest, and the outer diameter and the inner diameter of the annular air bag 13 near the forefoot are the smallest.

[0042] In the present embodiment, at least two adjacent air bags 13 cooperate with the upper support sheet 11 and the lower support sheet 12 to form a deformation cavity 14, the upper surface of the deformation cavity 14 being convex relative to the lower surface, and the lower surface of the deformation cavity 14 being convex relative to the upper surface. In this way, the volume of the deformation cavity 14 is moderate, leaving sufficient space for deformation of the air bag 13 and facilitating production and processing of the upper support sheet 11 and the lower support sheet 12, and this structural design also facilitates synchronous transmission of force from the upper support sheet 11 and the lower support sheet 12 to each air bag 13, thereby making the cushioning effect of each part of the sole better.

[0043] In the present embodiment, the upper support sheet 11 and the lower support sheet 12 are preferably made of polyurethane material, and nylon material can also be used. In the present embodiment, the upper support sheet 11 and the lower support sheet 12 are made of polyurethane material with a hardness of Shore A 85±3, a density of 1.2±0.03 g / cm 3 , a tensile strength of ≧30 MPa, an elongation at break of ≧400%, and an angle tear of ≧60 N / mm. 3 In the present embodiment, the air bag 13 is made of polyurethane material with a hardness of Shore A 95±3, a density of 1.21±0.03 g / cm

[0044] Adopting the technical scheme, when a person walks, the upper supporting sheet 11 is stressed and transmits the force to each air bag 13, since the air bag 13 is filled with 1 atmosphere of air, and the air bag 13 is provided with a through hole 131 penetrating from the outside of the sole to the inside of the sole, referring to Figure 3 , each air bag 13 is deformed after being stressed to buffer the force, at the same time, each air bag 13 also transmits the force to the lower supporting sheet 12, the lower supporting sheet 12 exerts upward force on the air bag 13 after being stressed by the upward rebound force of the ground, when the deformation degree of the air bag 13 reaches a critical point, the air bag 13 restores the deformation, referring to Figure 4 , and transmits the force upward to provide the supporting function and the rebound function, it can be known that, adopting the technical scheme, each air bag 13 is deformed synchronously under the action of the upper supporting sheet 11 and the lower supporting sheet 12, the air bag 13 has certain deformation ability and deformation recovery ability, so that good cushioning performance, rebound performance and supporting function can be provided at different positions of the sole, and the sole is more lightweight.

[0045] More preferably, each air bag 13 is arranged in the mounting position to be fixed along the longitudinal axis direction of the sole relative to the upper supporting sheet 11 and the lower supporting sheet 12, so that the air bag 13 is prevented from moving forward and backward after being stressed, thereby making the structure of the midsole 10 more stable; the axis of the through hole 131 is perpendicular to the longitudinal axis of the sole, the air bag 13 is stressed more uniformly in the length direction thereof, and the cushioning effect is better; the annular air bag 13 ensures the cushioning effect and the rebound effect of the sole.

[0046] More preferably, since the sole is stressed most at the position close to the heel and is stressed least at the position close to the forefoot when walking, on the longitudinal section of the sole perpendicular to the upper supporting sheet 11 and the lower supporting sheet 12, the outer diameter of each air bag 13 gradually decreases in the direction from the heel position to the forefoot position of the sole, so that the cushioning effect at the heel position is ensured to be best, different cushioning effects and rebound effects are formed at different positions, which is more in line with human mechanics and more comfortable, and the thickness of the sole generally gradually decreases from the rear to the front, and the above setting also ensures the adaptation to the thickness of the sole.

[0047] Embodiment 2

[0048] As shown in Figure 2 , the application also provides a sole, which comprises the midsole 10 in embodiment 1, and further comprises an upper sole 20 and a lower sole 30, the upper sole 20 is attached to the upper surface of the upper supporting sheet 11, and the lower sole 30 is attached to the lower surface of the lower supporting sheet 12. The hardness of the upper sole 20 is less than that of the upper supporting sheet 11, and the hardness of the lower sole 30 is less than that of the lower supporting sheet 12. The thickness of the sole gradually decreases from the rear to the front to be in line with human mechanics.

[0049] In the embodiment, the upper bottom 20 is a foamed component covering the entire foot bottom on the upper surface and located closest to the touch foot, and the lower bottom 30 is a foamed component closest to the ground on the lower surface. The upper bottom 20 and the lower bottom 30 are both made of injection material, and the material includes TPU, ETPU, high-elastic material of nylon, or foamed material of EVA. The upper bottom 20 can be made of the surface arc-shaped elastic structure of the midsole 10 material with good elastic performance and energy feedback performance. The lower bottom 30 can be made of the surface arc-shaped support structure of the material with support performance and the support and protection structure combined with the rubber material with wear-resistant protection. In the embodiment, the hardness of the upper bottom 20 is 40-48D, and the hardness of the lower bottom 30 is 50-55D.

[0050] According to the technical solution, when a person walks, the upper bottom 20 transmits force to the upper support sheet 11, the upper support sheet 11 transmits force to each air bag 13, because the air bag 13 is filled with 1 atmosphere of air, and the air bag 13 is provided with a through hole 131 penetrating from the outer side of the sole to the inner side of the sole, and each air bag 13 deforms to buffer force after receiving force, and at the same time, each air bag 13 transmits force to the lower support sheet 12 and then to the lower bottom 30, the lower bottom 30 exerts force upward after contacting the ground, and when the deformation degree of the air bag 13 reaches a critical point, the air bag 13 restores deformation to transmit force upward and provide support function and elastic function. Figure 3 Figure 4 According to the technical solution, each air bag 13 deforms synchronously under the action of the upper support sheet 11 and the lower support sheet 12, the air bag 13 has certain deformation ability and deformation recovery ability, thereby providing good shock absorption performance, elastic performance, and support function at different positions of the sole, and the sole is more lightweight, and different positions of the sole can form different buffering effects and elastic effects, which is more in line with human mechanics.

[0051] Embodiment 3

[0052] The application also provides a shoe, not shown in the figure, including the sole in embodiment 2. The shoe has good shock absorption performance, elastic performance, and support performance, is more lightweight, and is more comfortable for users to wear.

[0053] In the claims, specification, and above drawings of the application, the terms “include”, “have”, and their variants are intended to mean “contain but not limited to”.

[0054] ​The above description and the examples are intended to explain the scope of the present application, but not to limit the scope of the present application. Modifications, equivalent replacements or other improvements based on the conception of the present application or the above examples, which can be obtained by those skilled in the art with common knowledge, common technical knowledge and / or prior art, through logical analysis, reasoning or limited tests, shall be included in the scope of the present application.

Claims

1. A midsole of a shoe sole, characterized by, The upper support sheet, the lower support sheet and the at least two air bags are arranged along the longitudinal axis of the shoe sole.

2. A midsole for a shoe sole as defined in claim 1, characterized in that The upper support sheet and the lower support sheet are cooperatively formed into mounting positions equal in number to the air bags and arranged along the longitudinal axis of the shoe sole, and each air bag is arranged in a mounting position to be fixed relative to the upper support sheet and the lower support sheet along the longitudinal axis of the shoe sole.

3. A midsole for a shoe sole as defined in claim 2, characterized in that The lower surface of the upper support sheet is formed into first grooves equal in number to the air bags and arranged along the longitudinal axis of the shoe sole, the first grooves are adapted to the shape of the upper part of the air bags, the upper surface of the lower support sheet is formed into second grooves corresponding to the first grooves, the second grooves are adapted to the shape of the lower part of the air bags, and the first grooves and the second grooves cooperatively form the mounting positions.

4. A midsole for a shoe sole as defined in claim 3, characterized in that The axis of the through hole is perpendicular to the longitudinal axis of the shoe sole.

5. A midsole for a shoe sole as defined in claim 4, wherein In a vertical cross section of the shoe sole perpendicular to the upper support sheet and the lower support sheet, the outer diameter of each air bag gradually decreases from the heel position to the forefoot position of the shoe sole.

6. A midsole for a shoe sole as defined in claim 5, wherein At least two adjacent air bags and the upper support sheet and the lower support sheet cooperatively form a deformation cavity, the upper surface of the deformation cavity is convex relative to the lower surface, and the lower surface of the deformation cavity is convex relative to the upper surface.

7. A midsole for a shoe sole as defined in claim 6, wherein The air bag is annular.

8. A shock absorbing shoe sole characterized by, The shoe sole further comprises an upper sole and a lower sole, the upper sole is attached to the upper surface of the upper support sheet, and the lower sole is attached to the lower surface of the lower support sheet.

9. A shock absorbing shoe sole as defined in claim 8, wherein The hardness of the upper sole is less than that of the upper support sheet, and the hardness of the lower sole is less than that of the lower support sheet.

10. A shoe characterized by The shock-absorbing shoe sole of any one of claims 8-9.

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