Lightweight EVA foamed shoe sole

Abstract

This utility model relates to the technical field of foamed shoe soles, and more particularly to a lightweight EVA foamed shoe sole, comprising a shoe upper support base plate, an EVA mid-layer plate connected to one side surface of the shoe upper support base plate, a placement groove formed on one side surface of the EVA mid-layer plate, a TPU arched support plate connected to the inner surface of the placement groove, a fiber support plate connected to the inner surface of the TPU arched support plate, and E-TPU support bubbles adhered to one side surface of the fiber support plate. This lightweight EVA foamed shoe sole has a lightweight overall structure. When worn and walked on, the cross-hole design reduces the weight of the otherwise thick sole significantly, and the cross-filling provides better support. The addition of lighter support bubbles increases walking comfort, while maintaining lightness and reducing stuffiness, keeping feet dry and comfortable for extended periods.

Description

Technical Field

[0001] This utility model relates to the technical field of foamed shoe soles, and in particular to a lightweight EVA foamed shoe sole. Background Technology

[0002] The sole is the bottom structure of a shoe that contacts the ground. It primarily supports the foot, provides cushioning and shock absorption, and offers slip resistance and durability. Its materials and manufacturing processes directly affect the shoe's comfort, safety, and lifespan. Foamed soles, due to their numerous microbubble structures, require EVA and TPU materials. EVA boasts excellent foaming properties, resulting in a lightweight, soft texture with moderate elasticity and controllable cost. Its bubble structure effectively disperses impact during walking or exercise. TPU, after foaming, combines high strength, high resilience, and wear resistance, with a rebound rate exceeding 85%. Its stable bubble structure maintains long-term shock absorption, compensating for EVA's shortcomings in wear resistance and durability. Lightweight materials refer to sole materials with low density, light weight, and meeting basic performance requirements. Besides EVA and PU, this also includes TPEE. Compared to traditional heavy sole materials, these materials significantly reduce shoe weight, decrease foot fatigue during long-term wear, and improve flexibility. The bubble structure enhances shock absorption and reduces joint damage from ground impacts. Therefore, a lightweight EVA foamed sole is needed.

[0003] Existing shoe soles generally use thicker materials and traditional structures, which not only increases the overall weight of the shoe, but also significantly reduces the flexibility of the foot. When people walk in daily life, their feet need to exert extra force to move the heavy soles. Even a short period of activity can cause soreness and swelling. After long commutes or shopping, leg muscles are prone to fatigue, and it may even cause foot discomfort.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN206651442U that discloses a foamed shoe sole. The patent describes a sole body comprising several different colored sole blocks, an anti-slip structure on the bottom surface of the sole blocks, a limiting mechanism between adjacent sole blocks to prevent them from detaching in the front-to-back direction, a waterproof fabric on the top surface of the sole body, and a protective edge that is securely attached to the sole body. The sole blocks are sequentially joined together in the front-to-back direction. The limiting mechanism includes a locking block on one sole block and a locking groove on an adjacent sole block. However, while this type of sole body is composed of multiple different colored sole blocks joined together in the front-to-back direction, it also increases the weight.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this invention is to provide a lightweight EVA foam sole to solve the problem mentioned in the background art, which states that existing soles generally use thicker materials and traditional structures, which not only increase the overall weight of the shoe but also significantly reduce the flexibility of the foot. When people walk in daily life, their feet need to exert extra force to move the heavy sole, and they will feel sore and swollen after a short period of activity. After long commutes or shopping, the leg muscles are prone to fatigue and may even cause foot discomfort.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight EVA foam shoe sole, comprising a shoe body support substrate, an EVA mid-layer plate connected to one side surface of the shoe body support substrate, a placement groove formed on one side surface of the EVA mid-layer plate, a TPU arched support plate connected to the inner surface of the placement groove, a fiber support plate connected to the inner surface of the TPU arched support plate, and an E-TPU support bubble adhered to one side surface of the fiber support plate.

[0008] Preferably, the inner surface of the shoe body support base plate is provided with a cushioning insole.

[0009] Preferably, a substrate protective frame is attached to the outer surface of the shoe body bearing substrate, and an EVA middle layer is attached to one side surface of the substrate protective frame.

[0010] Preferably, the fiber support plate is provided in two sets, and the TPU arched support plates are connected inside the fiber support plate in a cross manner.

[0011] Preferably, the fiber support plate has a slot at the connection with the TPU arched support plate, and the inner surface of the slot is fitted with E-TPU support bubbles.

[0012] Preferably, a base plate is connected to one side of the EVA middle layer plate, and a placement groove is provided at the connection between the EVA middle layer plate and the base plate. An anti-slip texture is attached to one side surface of the base plate.

[0013] Preferably, the upper surface of the base plate is provided with an insulation layer, a puncture-resistant layer, and a breathable layer. The insulation layer is a polyurethane foam layer, the puncture-resistant layer is an aramid fiber layer, and the breathable layer is a knitted breathable fabric layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This lightweight EVA foam sole has a lighter overall structure. When people wear and walk, the cross-hole design can reduce most of the weight of the originally thick sole. Moreover, the cross-filling can provide better support. At the same time, the addition of lighter support bubbles increases the comfort when walking. The feet can hardly feel the extra burden of the sole. While maintaining its lightweight nature, the anti-slip pattern can improve ground grip and reduce the risk of slipping. It can also reduce stuffiness and keep the feet dry and comfortable for a long time. The sole is lighter while maintaining good function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the base plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the TPU arched support plate and fiber support plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the anti-slip textured structure of the base plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the insulation layer structure of this utility model.

[0020] In the diagram: 1. Footwear support base plate; 2. Cushioning insole; 3. Base plate protective frame; 4. EVA mid-layer board; 5. Placement groove; 6. TPU arched support plate; 7. Fiber support plate; 8. Gap groove; 9. E-TPU support bubble; 10. Outsole plate; 11. Anti-slip texture; 12. Insulation layer; 13. Puncture-resistant layer; 14. Breathable layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: a lightweight EVA foam shoe sole, including a shoe body support substrate 1, an EVA middle layer plate 4 connected to one side surface of the shoe body support substrate 1, a placement groove 5 formed on one side surface of the EVA middle layer plate 4, a TPU arched support plate 6 connected to the inner side surface of the placement groove 5, a fiber support plate 7 connected to the inner side surface of the TPU arched support plate 6, and an E-TPU support bubble 9 attached to one side surface of the fiber support plate 7.

[0023] Furthermore, a cushioning insole 2 is provided on the inner surface of the shoe body support base plate 1. The cushioning insole 2 can directly contact the foot. Relying on the high elasticity and softness of EVA foam material, it conforms to the curve of the foot and disperses the pressure on the sole of the foot, avoiding soreness caused by concentrated pressure on the foot and improving the comfort of wearing for a long time. At the same time, due to the lightness of EVA foam material, it will also reduce more gravity when the wearer walks.

[0024] Furthermore, a base plate protective frame 3 is attached to the outer surface of the base plate 1 of the shoe body, and an EVA middle layer plate 4 is attached to one side surface of the base plate protective frame 3. Through the setting of the base plate protective frame 3, the internal structure of the base plate protective frame 3 is designed to reduce the weight of the shoe itself while maintaining protection.

[0025] Furthermore, the fiber support plate 7 is provided in two sets, which are connected inside the TPU arch support plate 6 in a cross manner. By setting the TPU arch support plate 6, the fiber support plate 7 can be installed crosswise, which can reduce the use of materials while maintaining comfortable support, thereby reducing the weight of the sole and achieving a lightweight effect.

[0026] Furthermore, the fiber support plate 7 has a slot 8 at the connection with the TPU arched support plate 6. The inner surface of the slot 8 is fitted with an E-TPU support bubble 9. The E-TPU support bubble 9 can make the sole lighter because it uses carbon dioxide and nitrogen. This can maintain the support and cushioning effect while making the sole lighter.

[0027] Furthermore, a base plate 10 is connected to one side of the EVA middle layer 4. A placement groove 5 is also provided at the connection between the EVA middle layer 4 and the base plate 10. Anti-slip texture 11 is attached to one side of the surface of the base plate 10. The anti-slip texture 11 can increase the contact friction between the base plate 10 and the ground. Especially in slippery scenarios such as wet ground and smooth tiles, it can effectively prevent the feet from slipping and improve the safety of walking and sports.

[0028] Furthermore, the upper surface of the base plate 10 is provided with an insulation layer 12, a puncture-resistant layer 13, and a breathable layer 14. The insulation layer 12 is a polyurethane foam layer, the puncture-resistant layer 13 is an aramid fiber layer, and the breathable layer 14 is a knitted breathable fabric layer. Through the setting of the breathable layer 14, the knitted breathable fabric itself has a dense micropore structure, which allows the humid and hot air generated by the feet during the wearing process to be discharged outward through the pores, while introducing fresh external air to form an air circulation.

[0029] Working principle: First, when pressure is generated on the foot, the top cushioning insole 2 will come into contact with the foot first. Relying on the elasticity of the EVA foam material itself, it will initially absorb the impact energy. At the same time, the shoe body support plate 1 below will provide overall structural support. Then, the shoe body support plate 1 will compress the TPU arch support plate 6, and then the TPU arch support plate 6 will compress the cross-laid fiber support plate 7. Meanwhile, the E-TPU support bubbles 9 will further absorb the pressure and cushion the impact during walking or sports. The pressure is transmitted to the sole plate 10 after multi-stage shock absorption and cushioning. Then, the anti-slip texture 11 on the bottom of the sole plate 10 will increase the friction between the sole and the ground. The insulation layer 12 will maintain the foot temperature and improve wearing comfort. The puncture-resistant layer 13 will enhance the puncture resistance of the sole and ensure foot safety. The breathable layer 14 will promote air circulation inside the shoe and reduce stuffiness.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight EVA foam shoe sole, comprising a shoe body support substrate (1), characterized in that: An EVA mid-layer plate (4) is connected to one side surface of the shoe body support substrate (1). A placement groove (5) is opened on one side surface of the EVA mid-layer plate (4). A TPU arched support plate (6) is connected to the inner side surface of the placement groove (5). A fiber support plate (7) is connected to the inner side surface of the TPU arched support plate (6). An E-TPU support bubble (9) is attached to one side surface of the fiber support plate (7).

2. The lightweight EVA foam shoe sole according to claim 1, characterized in that: The inner surface of the shoe body support base plate (1) is provided with a cushioning insole (2).

3. The lightweight EVA foam shoe sole according to claim 1, characterized in that: The outer surface of the shoe body support substrate (1) is attached with a substrate protective frame (3), and one side surface of the substrate protective frame (3) is attached with an EVA middle layer plate (4).

4. The lightweight EVA foam shoe sole according to claim 1, characterized in that: The fiber support plate (7) is provided in two sets, and the TPU arched support plate (6) is connected inside the fiber support plate (7) in a cross manner.

5. The lightweight EVA foam shoe sole according to claim 1, characterized in that: The fiber support plate (7) has a slot (8) at the connection with the TPU arched support plate (6), and the inner surface of the slot (8) is fitted with an E-TPU support bubble (9).

6. The lightweight EVA foam shoe sole according to claim 1, characterized in that: One side of the EVA middle layer plate (4) is connected to the base plate (10). The connection between the EVA middle layer plate (4) and the base plate (10) is provided with a placement groove (5). One side of the base plate (10) is covered with anti-slip texture (11).

7. The lightweight EVA foam shoe sole according to claim 1, characterized in that: The upper surface of the base plate (10) is provided with a heat insulation layer (12), a puncture-resistant layer (13), and a breathable layer (14). The heat insulation layer (12) is a polyurethane foam layer, the puncture-resistant layer (13) is an aramid fiber layer, and the breathable layer (14) is a knitted breathable fabric layer.

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