Popcorn sole and shoe

Abstract

The utility model relates to the field of shoes, and provides a popcorn sole and a shoe, the popcorn sole comprises an outsole and a midsole, the bottom surface of the midsole is provided with a contour groove attached to the outsole, the side wall of the contour groove protrudes out of the bottom surface of the midsole to form a retaining wall structure, and the surface of the midsole is provided with a protective layer; the protruding height, at least located in the heel area, of the retaining wall structure is larger than the thickness of the outsole. The contour groove is designed in the bottom face of the insole, a retaining wall structure is formed, and therefore the structural strength of the edge of the insole can be improved. And with the design of the protective layer, the strength of the bottom surface of the insole is improved. The outsole can be wrapped through the contour groove, for example, at the heel position and the position where popcorn particles are prone to being damaged, the bottom face of the midsole is protected against being trampled, and the popcorn particles are prevented from falling off. The strength of the insole structure is improved, and then the service life of the sole and the service life of the shoe are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of footwear, specifically to a popcorn-shaped shoe sole and a shoe. Background Technology

[0002] ETPU (Expanded Thermoplastic Polyurethanes, also known as thermoplastic expanded polyurethane) granule foam midsoles have been developed for a long time. With their high elasticity, low density, environmental friendliness, and excellent compression, they have strong cushioning performance and have always been favored in the footwear industry.

[0003] However, a long-standing problem is that ETPU products have poor adhesive strength. When worn, if the ETPU material is accidentally stepped on at the heel or edge after being bonded to the rubber, the particles can easily fall off. This results in a shorter lifespan for the shoes and a poor user experience. Utility Model Content

[0004] The purpose of this invention is to provide a popcorn shoe sole and shoes, which aims to improve the existing popcorn shoe soles, which are prone to popcorn kernels falling off or breaking after being worn for a period of time.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a popcorn shoe sole, comprising:

[0006] Outer bottom; and

[0007] The midsole has a contour groove on its bottom surface for attaching to the outsole. The sidewall of the contour groove protrudes from the bottom surface of the midsole to form a retaining wall structure. A protective layer is provided on the surface of the midsole.

[0008] The protrusion height of the retaining wall structure at least in the heel area is greater than the thickness of the outsole.

[0009] Preferably, the retaining wall structure is an arc-shaped structure.

[0010] Preferably, the retaining wall structure is configured to gradually widen and / or thicken from the arch of the foot toward the heel.

[0011] Preferably, the hardness of the heel area of ​​the midsole is greater than that of the arch area or the forefoot area.

[0012] Preferably, the contour groove is an open groove, and the opening of the contour groove is located on the side of the arch and / or forefoot.

[0013] Preferably, the bottom side of the insole is provided with an inwardly inclined constricted surface.

[0014] Preferably, the constricted surface is an inwardly constricted arc surface, and the arc of the inwardly constricted arc surface is 15 to 30°.

[0015] Preferably, the retaining wall structure has a maximum width of 1.1 to 1.5 mm and a maximum thickness of 0.8 to 1.2 mm at the heel.

[0016] A shoe is also provided, including the popcorn sole as described above.

[0017] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] 1. By designing contoured grooves on the bottom surface of the midsole to form a retaining wall structure, the structural strength of the midsole edges is increased. Combined with the design of the protective layer, this further enhances the strength of the midsole surface. The contoured grooves can also cover the outsole, for example, at the heel, an area prone to popcorn-like particles breaking, protecting the bottom surface of the midsole from being stepped on and causing these particles to fall. This improves the strength of the midsole structure, thereby extending the lifespan of the sole and the shoe.

[0019] 2. The retaining wall structure features a curved surface design, which avoids the problem of wear and tear on sharp-edged structures. At the same time, it reduces the contact area with the ground, thus minimizing wear.

[0020] 3. The midsole features a tapered design on the side bottom, which allows the sole to fully absorb the reaction force from stepping on the foot, resulting in good force transmission at the edge of the sole. This prevents the popcorn-like particles in the midsole from breaking or being pulled off by the outsole's tension, thus improving the stability of the sole structure. Attached Figure Description

[0021] Figure 1 This is an exploded view of the popcorn shoe sole described in this utility model;

[0022] Figure 2 This is a partial view of the popcorn shoe sole described in this utility model;

[0023] Figure 3 This is a structural schematic diagram of the popcorn shoe described in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Outer bottom;

[0026] 20. Midsole; 201. Contour groove; 202. Retaining wall structure; 203. Narrowing surface. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0030] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1

[0032] Please refer to Figure 1 and Figure 2 As shown, this embodiment provides a popcorn shoe sole, including an outsole 10 and a midsole 20. The bottom surface of the midsole 20 is provided with a contour groove 201 for attaching the outsole 10. The sidewall of the contour groove 201 protrudes from the bottom surface of the midsole 20 to form a retaining wall structure 202. A protective layer is provided on the surface of the midsole 20. The protrusion height of the retaining wall structure 202, at least in the heel area, is greater than the thickness of the outsole 10. The outsole 10 can be made of rubber material.

[0033] During the use of popcorn-shaped shoe soles, the toe area is relatively less prone to damage due to its upturned shape. Similarly, if the arch support is designed, it doesn't contact the ground and is also less susceptible to damage. The most vulnerable areas are the heel area, the edges of the forefoot and heel, or, in cases where there is no arch support, the edges of the arch area.

[0034] Specifically, the midsole 20 is made of ETPU material, forming what is commonly known as the "popcorn" midsole 20, to vividly represent its granular midsole 20 structure. To improve the strength of the structure, 15% gold oil can be sprayed on the surface of the midsole 20 to prevent the material from aging, oxidizing and yellowing upon contact with air. At the same time, a protective film (i.e., the structure of the protective layer) can be attached to the surface of the material to prevent the particles from falling off, reinforce the surface, and prevent scratches caused by friction.

[0035] Furthermore, a contour groove 201 is designed on the bottom surface of the midsole 20 to accommodate the outsole 10. In the heel area, the height of the retaining wall structure 202 is increased, making the outsole 10 slightly lower than the retaining wall structure 202. This achieves the desired containment effect for the outsole 10, preventing tearing or the removal of midsole particles when the outsole 10 is stepped on (usually when taking off shoes, the heel is stepped on). The retaining wall structure 202 is designed as a single unit, distributing force evenly and preventing particles from being removed, thus providing excellent protection.

[0036] In this embodiment, the retaining wall structure 202 is an arc-shaped structure, such as a crescent-shaped arc, which can avoid the problem of easy wear and tear on angular structures. At the same time, it can reduce the contact area with the ground and reduce wear.

[0037] Furthermore, in this embodiment, the retaining wall structure 202 is configured to gradually widen and / or thicken from the arch position toward the heel position. The widest part of the retaining wall structure 202 at the heel is 1.1 to 1.5 mm, and the thickest part is 0.8 to 1.2 mm.

[0038] Specifically, the design gradually widens and thickens from the arch to the heel to increase the structural strength of the heel. Preferably, the width of the retaining wall structure 202 can be gradually increased from 0 to 1.3 mm, and the thickness of the retaining wall structure 202 can be gradually increased from 0 to 1.0 mm. This improves the structural stability of the heel area, creating a protective effect for the outsole 10.

[0039] Furthermore, in this embodiment, the hardness of the heel area of ​​the midsole 20 is greater than that of the arch area or the forefoot area. That is, for the heel area, the compression ratio of the ETPU material is increased accordingly, for example, by 8% to 15%, preferably 10%, to increase the hardness of this area. This increases the structural density of the heel area of ​​the midsole 20, thus improving the adhesion between the particles and making them more compact. This makes it less likely for the particles in the heel area to fall off, improving the adhesion and tensile strength of the heel area, and thus increasing its service life.

[0040] In this embodiment, the contour groove 201 is an open groove, and the opening of the contour groove 201 is located on the side of the arch and / or forefoot.

[0041] In terms of design, the contour groove 201 can be a closed-loop groove that covers the entire outsole 10, so that the forefoot edge and arch edge of the midsole 20 have a corresponding structural design as the heel area, ensuring the structural strength of the midsole 20 edge. Simultaneously, when the midsole 20 has a groove structure, it also forms an inner edge, which can also have a similar edge structure design as the heel area. That is, the hardness of the midsole 20 edge is increased, and it is covered by thicker and wider retainers. Except for the heel area, where the thickness gradually increases, the retainer structure 202 in other areas can have fixed values, such as a retainer structure 202 with a width of 0.8–1.3 mm and a thickness of 0.5–1.0 mm, to form a good protective structural design.

[0042] like Figure 3 As shown, in this embodiment, an inwardly inclined tapering surface 203 is provided on the bottom side of the midsole 20. This causes the bottom of the midsole 20 to taper inward, allowing the reaction force of the sole to be fully absorbed by the sole, resulting in good force transmission at the edge of the sole. This also prevents the popcorn-like particles in the midsole 20 from breaking or being pulled off by the tension of the outsole 10, thus improving the stability of the sole structure.

[0043] Furthermore, in this embodiment, the constricted surface 203 is an inwardly constricted arc surface with an arc angle of 15 to 30°. The arc surface design can withstand greater impact force and also increase the aesthetic appearance of the surface, thus having good practicality.

[0044] Example 2

[0045] This embodiment provides a shoe, including a popcorn sole as described in Embodiment 1. By reinforcing the midsole of the popcorn sole in areas prone to damage, and adding a retaining wall structure and a side cuff structure, the probability of the popcorn midsole being damaged is effectively prevented or reduced, thereby increasing the shoe's lifespan and improving the user experience, resulting in a positive market response.

[0046] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A popcorn shoe sole, characterized in that, include: Outer base; and The midsole has a contour groove on its bottom surface for attaching to the outsole. The sidewall of the contour groove protrudes from the bottom surface of the midsole to form a retaining wall structure. A protective layer is provided on the surface of the midsole. The protrusion height of the retaining wall structure at least in the heel area is greater than the thickness of the outsole.

2. The popcorn-shaped shoe sole according to claim 1, characterized in that: The retaining wall structure is an arc-shaped structure.

3. The popcorn-shaped shoe sole according to claim 2, characterized in that: The retaining wall structure is designed to gradually widen and / or thicken from the arch of the foot toward the heel.

4. The popcorn shoe sole according to claim 1, 2, or 3, characterized in that: The hardness of the heel area of ​​the midsole is greater than that of the arch area or the forefoot area.

5. The popcorn shoe sole according to claim 1, 2, or 3, characterized in that: The contour groove is an open groove, and the opening of the contour groove is located on the side of the arch and / or forefoot.

6. The popcorn shoe sole according to claim 1, 2, or 3, characterized in that: The bottom side of the midsole has an inwardly sloping constricted surface.

7. The popcorn shoe sole according to claim 6, characterized in that: The constricted surface is an inwardly constricted arc surface, and the arc of the inwardly constricted arc surface is 15 to 30°.

8. The popcorn shoe sole according to claim 3, characterized in that: The retaining wall structure has a maximum width of 1.1–1.5 mm and a maximum thickness of 0.8–1.2 mm at the heel.

9. A shoe, characterized in that, Includes the popcorn shoe sole as described in any one of claims 1 to 8.

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