Hole shoes with layered insole

Abstract

The utility model relates to a kind of hole shoes with layered insole, including shoe body and layered insole, the layered insole includes contact layer, bacteriostatic layer, support layer and dynamic cushioning layer in sequence, the dynamic cushioning layer is equipped with multiple support columns, the shoe body has the accommodation space compatible with layered insole, and layered insole is placed in accommodation space.This shoe has the function of ventilation, bacteriostasis, buffering and layered function linkage.

Description

Technical Field

[0001] This utility model relates to the field of footwear, and in particular to clogs with a layered midsole. Background Technology

[0002] The purpose of shoes is to protect the feet from external injuries, and the midsole is the core of the shoe structure. The midsole absorbs the impact generated during exercise, providing cushioning and support for the foot. While Crocs are widely used due to their porous uppers and lightweight, breathable design, their internal midsole structure has long suffered from the following problems: 1. Existing midsoles are fixed to the shoe body and cannot be removed, and they are single-layered; 2. Insufficient material health: Traditional midsoles often use chemical materials such as EVA and PVC. Although they are elastic, their breathability relies on the perforated design, making them prone to bacterial and mite growth. Furthermore, these chemical materials may cause skin sensitivities (especially in children and those with sensitive skin); 3. Limited functionality and lack of zoned support: A single-material midsole cannot match the pressure requirements of different areas of the foot (forefoot, arch, heel)—the forefoot needs soft cushioning, the arch needs stable support, and the heel needs impact absorption. Prolonged wear can easily lead to arch fatigue or plantar fascia damage. 4. Conflict between breathability and cushioning: If traditional midsoles increase breathability by adding holes, they will weaken cushioning performance; if they rely on the elasticity of the material itself (such as high-density EVA), the breathability will be insufficient, and the feet will easily become stuffy and damp; 5. Lack of environmental protection: The production process of chemical materials may generate pollution, and they are difficult to degrade after disposal, which does not conform to the trend of green consumption.

[0003] Therefore, there is an urgent need for a perforated shoe midsole that combines natural antibacterial materials, zoned support structure, and dynamic cushioning function, taking into account the needs of health, comfort, and environmental protection. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a perforated shoe with a layered midsole that is breathable, antibacterial, cushioning and has interconnected layered functions.

[0005] This utility model is achieved by the following technical solution: a perforated shoe with a layered midsole, comprising a shoe body and a layered midsole, wherein the layered midsole comprises, in sequence, a contact layer, an antibacterial layer, a support layer and a dynamic cushioning layer, wherein the dynamic cushioning layer is provided with multiple support columns, and the shoe body has a placement space adapted to the layered midsole, wherein the layered midsole is placed in the placement space to complete the connection between the midsole and the shoe body.

[0006] Furthermore, the bottom of the placement space is provided with multiple mounting slots corresponding to the support columns, and the support columns of the layered midsole are inserted into the mounting slots to complete the connection between the midsole and the shoe body.

[0007] Furthermore, the dynamic buffer layer also includes a connecting layer, with multiple support columns fixed between the connecting layer and the support layer.

[0008] Furthermore, multiple support columns are arranged in an array at the bottom of the support layer. The diameter of the support columns in the forefoot area is smaller than that in the heel area, and the density of the support columns in the forefoot area is higher than that in the heel area.

[0009] Furthermore, the support column has a through hole along the axial direction.

[0010] Furthermore, the antibacterial layer is a jute fiber layer, and the jute fiber layer has a mesh structure.

[0011] Furthermore, the support layer is an environmentally friendly pulp layer, which includes bamboo pulp and / or wood pulp, and the support layer has regularly arranged honeycomb micropores inside.

[0012] Furthermore, the contact layer is a latex layer, the density of the forefoot area of ​​the contact layer is lower than that of the heel area, and the upper surface of the contact layer has a wavy micro-embossing with a height of 0.5 mm.

[0013] Furthermore, the lower end of the support column is provided with a retaining edge along the side wall, and the mounting groove has a retaining groove that matches the retaining edge.

[0014] The beneficial effects of this utility model are:

[0015] 1. Layered Functional Linkage. The layered midsole adopts a four-layer design: contact layer, antibacterial layer, support layer, and dynamic cushioning layer. The upper latex layer disperses pressure, the middle jute layer is antibacterial and breathable, the pulp layer provides lightweight support, and the support columns provide dynamic cushioning, forming a full-path protection of "contact-protection-support-cushion".

[0016] 2. Three-dimensional breathable network. The micro-embossed upper surface of the latex layer forms transverse breathable channels; the highly porous middle jute fiber layer forms longitudinal breathable channels; the lower pulp layer features honeycomb pores forming radial breathable channels; and the through-holes in the support columns form vertical breathable channels. This creates a four-level, interconnected breathable network, accelerating sweat evaporation and achieving a breathability rate ≥5000g / (m²). 2 • 24h), significantly reducing humidity inside the shoe cavity (humidity ≤60%).

[0017] 3. Antibacterial protection. The antibacterial layer uses jute fiber and a highly porous structure in synergy to inhibit the growth of fungi causing athlete's foot (such as Candida albicans) and mites, with an antibacterial rate of ≥90% and a mite repellency rate of ≥85%.

[0018] 4. The support column array is designed according to the different pressure distribution of the foot, providing flexible cushioning in the forefoot, stable support in the arch, and shock absorption in the heel, thus relieving arch fatigue and plantar fascia damage.

[0019] 5. The removable midsole makes it easy to replace and clean. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the first embodiment of a clog with a layered midsole;

[0021] Figure 2 yes Figure 1 A schematic diagram of the midsole structure;

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of the sole located within the inner cavity of the shoe;

[0023] Figure 4 yes Figure 1 Schematic diagram of the central support column;

[0024] Figure 5 This is a structural schematic diagram of a second embodiment of a clog with a layered midsole.

[0025] Marking description: 1. Shoe body, 2. Layered midsole, 21. Contact layer, 22. Antibacterial layer, 23. Support layer, 24. Dynamic cushioning layer, 11. Outsole, 12. Mounting groove, 211. Micro-embossing, 241. Forefoot support column, 242. Heel support column, 243. Connecting layer. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] Reference Figures 1-4 The first embodiment of this utility model provides a perforated shoe with a layered midsole, including a shoe body 1 and a layered midsole 2. The layered midsole 2 sequentially includes a contact layer 21, an antibacterial layer 22, a support layer 23, and a dynamic cushioning layer, wherein the dynamic cushioning layer is provided with a plurality of support pillars 24.

[0028] The shoe body has a mounting space adapted to the layered midsole, which is placed within the mounting space to complete the connection between the midsole and the shoe body. Specifically, the bottom of the mounting space is provided with multiple mounting slots 12 corresponding to the support columns. The support columns of the layered midsole are inserted into the mounting slots 12 to complete the connection between the midsole and the shoe body.

[0029] The contact layer 21 is a latex layer, preferably made of Dunlop latex with a purity ≥90% and containing rubber protein. The latex layer thickness is 1-3 mm, preferably 2 mm. The latex layer density is 0.12-0.18 g / cm³. 3The density of the contact layer in the forefoot area is lower than that in the heel area. The upper surface of the contact layer has wavy micro-embossing with a height of 0.4mm-0.5mm. The latex layer can directly contact the foot, utilizing the high elasticity and skin-friendly properties of latex to disperse pressure. The micro-embossing increases the contact area with the skin and reduces local pressure. The natural rubber protein component has certain antibacterial properties (inhibiting common foot bacteria such as Staphylococcus aureus).

[0030] The antibacterial layer 22 is a jute fiber layer with a mesh structure and a basis weight of 80-120 g / m². 2 The thickness is 1-2mm (preferably 1.5mm). Natural jute fibers are degummed and combed to form a mesh structure with a fiber diameter of 5-10μm and a porosity of 60%-70%. The surface is coated with natural plant gum (such as peach gum) to fix the fibers. Jute fibers naturally contain antibacterial components such as "jutein," which can inhibit the growth of athlete's foot fungi (such as Candida albicans) and mites. The high porosity mesh structure enhances air circulation, and combined with the micro-embossing of the upper latex layer, it forms a "through-and-through" longitudinal breathable channel. At the same time, the low resilience material (compression set ≤15%) helps to distribute foot pressure and avoid localized hard pressure.

[0031] The support layer 23 is an environmentally friendly pulp layer, comprising bamboo pulp and / or wood pulp. The bamboo pulp and / or wood pulp are molded without chemical binders. The thickness of the environmentally friendly pulp layer is 2-4 mm (preferably 3 mm), and its density is 0.3-0.4 g / cm³. 3 The support layer contains regularly arranged honeycomb-like micropores with a pore diameter of 0.3-0.5 mm and a micropore spacing of 0.5-1 mm. The natural fiber structure of bamboo / wood pulp provides lightweight support (weight per unit area ≤ 50 g / m²). 2 The honeycomb micropores disperse vertical pressure while limiting lateral deformation, preventing excessive collapse of the midsole. The natural materials of bamboo / wood pulp are environmentally friendly and odorless, meeting green manufacturing requirements. The bottom of the support layer can be equipped with multiple mounting slots 12 that correspond to and fit the support columns. The top of the support columns can be fixedly connected to the mounting slots (the insertion and fixing structure between the mounting slots and the support columns is existing technology and is not shown in the attached drawings).

[0032] Dynamic Buffer Layer: Multiple support pillars 24 are arranged in an array at the bottom of the support layer to form a dynamic buffer layer. The support pillars are preferably made of thermoplastic elastomer (TPE) or high-elasticity polyurethane (PU). The high resilience of TPE / PU material (permanent deformation rate ≤5%) ensures stable support performance after long-term use. The height of the support pillars is preferably 5-8mm. Among them, the diameter of the forefoot support pillar 241 is smaller than that of the heel support pillar. The diameter of the forefoot support pillar is preferably 8mm, and the diameter of the heel support pillar 242 is preferably 12mm. The arrangement density of the forefoot support pillars is higher than that of the heel support pillars. The arrangement density of the forefoot support pillars is 4-6 per square centimeter, and the arrangement density of the heel support pillars is 2-3 per square centimeter, matching the mechanical requirements of "flexible forefoot and stable heel".

[0033] The support column 24 has through holes 243 along its axial direction, with a hole diameter of 2-3 mm and a spacing of 1-2 mm between adjacent support columns. During walking / exercise, the through holes inside the column are compressed and deformed under pressure. The through holes of the support column, together with the elastic material, absorb the impact force from the ground (impact absorption rate ≥30%), maintaining the overall stability of the midsole (collapse ≤1 mm after long-term use), while allowing air to flow between the columns, forming a "vertical-horizontal" two-way breathability. The lower end of the support column has a retaining edge 244 around its side wall, and the mounting groove 12 has a retaining groove 13 that matches the retaining edge. The support column is inserted into the mounting groove, and the retaining edge engages with the retaining groove to complete the connection between the layered midsole and the shoe body.

[0034] The specific steps in the manufacturing process of the above-mentioned clogs with layered midsoles are as follows:

[0035] S1. Preparation of the first layer: contact layer (latex layer). Natural latex is concentrated by centrifugation (solid content 60%), then injected into a mold for vulcanization (temperature 100℃, time 20min). After demolding, the edges are trimmed to obtain the latex layer.

[0036] S2. Preparation of the second layer: antibacterial layer (jute fiber layer). Natural jute fibers are degummed (soaked in sodium hydroxide solution), combed (using a web forming machine), and cross-laid (forming a 0.5mm thick web). The surface is coated with gum arabic (10% solid content) for fixation, dried (80℃, 10min), and then cut to the target size.

[0037] S3. Preparation of the third layer: support layer (environmentally friendly pulp layer). Bamboo / wood pulp is formed by papermaking machine (weight control), press dewatering (dryness 40%), hot pressing molding (temperature 150℃, pressure 5MPa) to form a honeycomb microporous structure, and then cut after cooling.

[0038] S4. Preparation of the fourth layer: dynamic buffer layer (support pillars). TPE / PU granules are injected into the support pillar mold (including through-hole structure) through an injection molding machine, and after holding pressure and cooling (25℃, 5min), they are demolded to obtain an elastic support pillar array.

[0039] S5. Interlayer bonding. The first and second layers are bonded together with natural rubber adhesive (20% solid content) (pressure 0.3MPa, time 5min); the second and third layers are bonded together with hot melt adhesive (temperature 120℃, pressure 0.5MPa); the third and fourth layers are engaged by the bottom boss of the support column and the mounting groove (depth 0.5mm) on the lower surface of the third layer, and then reinforced by ultrasonic welding (power 150W, time 1s).

[0040] S6. Finished Product Assembly. The composite midsole is placed into the outsole mold. The outsole has pre-cut mounting grooves that match the support columns. The midsole and outsole are fixed together by secondary foaming (EVA material) to finally form a complete shoe.

[0041] Reference Figure 5 The second embodiment of this utility model provides a perforated shoe with a layered midsole, which is basically the same as the first embodiment, except that the dynamic cushioning layer further includes a connecting layer 243, and multiple support pillars are fixed between the connecting layer 243 and the support layer 23. That is, the layered midsole 2 sequentially includes a contact layer 21, an antibacterial layer 22, a support layer 23, multiple support pillars (forefoot support pillar 241 and heel support pillar 242), and a connecting layer 243. The layered midsole is placed within the shoe's mounting space (the mounting space is adapted to the layered midsole), completing the assembly of the midsole and the shoe body.

Claims

1. A type of clog with a layered midsole, characterized by: The shoe includes an upper and a layered midsole. The layered midsole includes, in sequence, a contact layer, an antibacterial layer, a support layer, and a dynamic cushioning layer. The dynamic cushioning layer is provided with multiple support pillars. The shoe body has a placement space adapted to the layered midsole, and the layered midsole is placed in the placement space.

2. A clog with a layered midsole according to claim 1, characterized in that: The bottom of the placement space is provided with multiple mounting slots corresponding to the support columns. The support columns of the layered midsole are inserted into the mounting slots to complete the connection between the midsole and the shoe body.

3. A clog with a layered midsole according to claim 1, characterized in that: The dynamic buffer layer also includes a connecting layer, with multiple support columns fixed between the connecting layer and the support layer.

4. A clog with a layered midsole according to claim 1, 2, or 3, characterized in that: Multiple support columns are arranged in an array at the bottom of the support layer. The diameter of the support columns in the forefoot area is smaller than that in the heel area, and the density of the support columns in the forefoot area is higher than that in the heel area.

5. A clog with a layered midsole according to claim 4, characterized in that: The support column has a through hole along its axial direction.

6. A clog with a layered midsole according to claim 4, characterized in that: The antibacterial layer is a jute fiber layer, which has a mesh structure.

7. A clog with a layered midsole according to claim 5 or 6, characterized in that: The support layer is an environmentally friendly pulp layer, which includes bamboo pulp and / or wood pulp, and the support layer has regularly arranged honeycomb micropores inside.

8. A clog with a layered midsole according to claim 7, characterized in that: The contact layer is a latex layer, with a lower density in the forefoot area than in the heel area, and the upper surface of the contact layer has a wavy micro-embossed texture with a height of 0.4mm-0.5mm.

9. A clog with a layered midsole according to claim 2, characterized in that: The lower end of the support column is provided with a retaining edge along the side wall, and the mounting groove has a retaining groove that matches the retaining edge.

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