Ventilated shoe sole

Abstract

The utility model relates to a kind of ventilation shoe sole, including bottom layer, middle layer and upper layer sequentially arranged from bottom to top;Middle layer is frame structure, and hollow cavity is formed with front and rear through in its inside, and the forefoot region of middle layer is provided with multiple air holes.By not needing any electronic or mechanical power device, only utilize the weight and pace of human body when walking, a stable, efficient "bellows type" air circulation system can be driven;It fundamentally solves the problem of low ventilation efficiency of static breathable material, realizes dynamic, active shoe environment renewal, and continuously keeps feet dry and comfortable;Through the unique "support column" integrated structure, while realizing large-area hollow ventilation, the structural integrity of the shoe sole is ensured;More than 80% of the connecting area of support column and upper layer provides a stable support feeling close to solid shoe sole, effectively prevents foot fatigue and potential harm caused by unstable structure, and perfectly solves the technical contradiction that ventilation and support are difficult to balance.

Description

Technical Field

[0001] This utility model relates to the field of footwear technology, specifically to a breathable shoe sole. Background Technology

[0002] In daily life, people's feet tend to sweat when walking or exercising, leading to a damp and stuffy environment inside shoes. Prolonged exposure to this environment not only results in poor comfort but also easily breeds bacteria, causing health problems such as foot odor and athlete's foot.

[0003] Currently, most breathable shoes on the market use a single-layer mesh or side openings, which have limited breathability and make it difficult to create effective air circulation. Some actively ventilated soles with complex air pumps and valves offer better performance, but their complex structure, high cost, and susceptibility to damage, along with increased shoe weight, make them less effective.

[0004] Therefore, there is an urgent need for a breathable sole that has a simple structure, requires no additional moving parts, and can effectively achieve air circulation inside and outside the shoe. Utility Model Content

[0005] The purpose of this application is to provide a breathable shoe sole.

[0006] Firstly, the breathable shoe sole provided in this application adopts the following technical solution: it includes a bottom layer, a middle layer and a top layer arranged sequentially from bottom to top; The middle layer is a frame structure with a hollow cavity that runs through the front and back. The front palm area of ​​the middle layer has multiple ventilation holes. The upper layer has multiple first ventilation holes that penetrate its thickness in the forefoot area. The lower surface of the upper layer has multiple support columns that extend downward and are supported on the bottom layer. The support columns connect the upper layer and the bottom layer as a whole, and form an upper airflow channel between the lower surface of the upper layer and the upper surface of the middle layer, and form a lower airflow channel between the upper surface of the bottom layer and the lower surface of the middle layer. The middle layer has a lateral vent on its side wall that communicates with the hollow cavity.

[0007] Preferably, a midsole and an insole are also provided above the upper layer, wherein the midsole is made of breathable mesh fabric and the bottom surface of the insole has a honeycomb structure.

[0008] By adopting the above technical solutions, a complete and efficient multi-level airflow guidance system is formed. The breathable mesh midsole ensures that the airflow from the sole can pass through smoothly and reach the sole of the foot; while the honeycomb structure insole not only provides support and cushioning.

[0009] Preferably, the upper layer, the support column, and the bottom layer are formed into a single unit using a one-time injection EVA process.

[0010] By adopting the above technical solution, the core support structure of the shoe sole is integrated and seamlessly connected, ensuring extremely high structural stability and durability, and avoiding the risk of glue separation or delamination.

[0011] Preferably, the bottom layer is a wear-resistant sheet made of rubber.

[0012] By adopting the above technical solutions, the rubber material provides the sole with excellent wear resistance and strong grip, ensuring walking safety and significantly extending the service life of the sole.

[0013] Preferably, the upper layer is internally embedded with a carbon fiber plate.

[0014] By adopting the above technical solution, the addition of carbon fiber plates provides crucial torsional rigidity and support to the shoe sole, which is mainly composed of flexible EVA material.

[0015] Preferably, the area where the top of the support column connects to the lower surface of the upper layer is S1, the total area of ​​the lower surface of the upper layer is S2, and the ratio of S1 to S2 is greater than or equal to 80%.

[0016] By adopting the above technical solution, this large-area connection design allows the foot pressure borne by the upper layer 3 to be effectively and evenly transmitted to the lower layer 1 through the support column 35, providing a stable and flat support platform for the foot and effectively preventing the foot from sinking or feeling unstable due to the hollow middle layer.

[0017] Preferably, the first vent is a round hole.

[0018] By adopting the above technical solutions, the circular hole structure is the simplest and most mature in processing and manufacturing, which is conducive to ensuring the regularity and accuracy of the hole position.

[0019] Preferably, the lower surface of the insole has a honeycomb structure, and the area of ​​its breathable portion accounts for 50% of the total area of ​​the insole.

[0020] By adopting the above technical solution, this specific area ratio represents an optimized balance between function and support.

[0021] In summary, this application includes at least one of the following beneficial technical effects of breathable shoe soles: 1. By using only the body's own weight and strides during walking, without any electronic or mechanical power devices, a stable and efficient "bellows-like" air circulation system can be driven; it fundamentally solves the problem of low ventilation efficiency of static breathable materials, realizes dynamic and active renewal of the in-shoe environment, and keeps feet dry and comfortable. 2. Through the unique integrated structure of the "support column", the shoe achieves large-area hollow ventilation while ensuring the structural integrity of the sole. The support column has a connection area of ​​more than 80% with the upper layer, providing a stable support feel close to that of a solid sole, effectively preventing foot fatigue and potential injuries caused by structural instability, and perfectly solving the technical contradiction of breathability and support. 3. The entire ventilation system has no moving or easily damaged parts. All structures are manufactured through a one-time injection molding process, resulting in a reliable structure, long lifespan, and maintenance-free operation. At the same time, the mature and efficient production process greatly reduces manufacturing costs, making this high-performance breathable sole a potential candidate for large-scale commercial application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the middle layer of this utility model; Figure 3 This is a schematic diagram of the upper layer unfolded structure of this utility model.

[0023] In the diagram: Bottom layer -1, Middle layer -2, Top layer -3; Hollow cavity-21, side vent-22, side vent-23; Carbon fiber plate-31, midsole-32, insole-33, first ventilation hole-34, support column-35. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0025] Example 1: A breathable shoe sole, referring to Figure 1 The structure includes a bottom layer 1, a middle layer 2, and an upper layer 3 arranged sequentially from bottom to top. The middle layer 2 is a frame structure with a hollow cavity 21 that runs through the front and back. Multiple ventilation holes 22 are provided in the forefoot area of ​​the middle layer 2. Multiple first ventilation holes 34 that penetrate the thickness of the upper layer 3 are provided in the forefoot area. Multiple support columns 35 extending downward and supporting the bottom layer 3 are provided on the lower surface of the upper layer 3. The support columns 35 connect the upper layer 3 and the bottom layer 1 into one unit and form an upper airflow channel between the lower surface of the upper layer 3 and the upper surface of the middle layer 2, and a lower airflow channel between the upper surface of the bottom layer 1 and the lower surface of the middle layer 2. Lateral ventilation ports 23 communicating with the hollow cavity 21 are provided on the side wall of the middle layer 2.

[0026] In some embodiments, a midsole 32 and an insole 33 are also provided above the upper layer 3. The midsole 32 is made of breathable mesh fabric, and the bottom surface of the insole 33 has a honeycomb structure, forming a complete and efficient multi-level airflow guiding system. The breathable mesh fabric of the midsole 32 ensures that the airflow from the sole can pass smoothly through and reach the sole of the foot; while the honeycomb structure of the insole 33 not only has a certain support and cushioning effect, but its unique honeycomb holes can also disperse and redistribute the airflow concentrated on the first ventilation hole 34 in the forefoot, so that the airflow is evenly diffused to the entire forefoot and even the arch area, avoiding the discomfort caused by excessive local wind force, greatly improving the uniformity of ventilation and the overall comfort of wearing. The upper layer 3, the support column 35, and the bottom layer 1 are molded into a whole by a one-time injection EVA process, realizing the integrated molding of the core support structure of the sole. The seamless connection ensures extremely high structural stability and durability, avoiding the risk of glue separation or delamination. Secondly, the lightweight and highly elastic properties of EVA material allow the sole to deform and rebound sufficiently during walking, providing the core power source for the "bellows-like" passive ventilation effect. Finally, this process is highly efficient, which is conducive to large-scale production and cost control.

[0027] In this application, the bottom layer 1 is a wear-resistant sheet made of rubber. The rubber material provides the sole with excellent wear resistance and strong grip, ensuring walking safety and significantly extending the sole's lifespan. Simultaneously, it seals the lower airflow channel inside the sole, forming, together with the middle layer lateral vents 23, the only controllable path for external air to enter, ensuring the directionality of airflow circulation and preventing dust and mud from directly intruding from the bottom. The upper layer 3 has a carbon fiber plate 31 embedded inside. The addition of the carbon fiber plate 31 provides crucial torsional rigidity and support to the sole, which is primarily made of flexible EVA material. It effectively prevents excessive bending and deformation of the sole during walking or exercise, protecting the foot. At the same time, it ensures that the structure of the middle layer hollow cavity 21 can undergo regular volume changes according to the design intent when under stress, thereby stably and efficiently driving air circulation without affecting the overall stability of the sole.

[0028] It should be noted that the connection area between the top of the support column 35 and the lower surface of the upper layer 3 is S1, and the total area of ​​the lower surface of the upper layer 3 is S2. The ratio of S1 to S2 is greater than or equal to 80%. This large-area connection design allows the foot pressure borne by the upper layer 3 to be effectively and evenly transferred to the bottom layer 1 through the support column 35, providing a stable and flat support platform for the foot and effectively preventing foot sinking or instability that may be caused by the hollow middle layer. While ensuring ventilation, the structural strength and support performance of the sole are close to those of traditional solid soles, balancing functionality and safety. The first ventilation hole 34 is a round hole. The round hole structure is the simplest and most mature in processing and manufacturing, which is conducive to ensuring the regularity and precision of the hole position. At the same time, the stress distribution of the round edge is uniform, and it is not easy to crack due to repeated bending, which enhances the structural durability of this area. From an aerodynamic perspective, the circular perforations ensure smooth airflow, reduce turbulence, and lower wind noise. The lower surface of the insole 33 features a honeycomb structure, with its ventilation area accounting for 50% of the total insole area. This specific area ratio represents an optimized balance between function and support. The 50% ventilation area ensures sufficiently large channels to disperse and expel airflow from the sole, achieving efficient ventilation. The remaining 50% solid structure provides the necessary support surface for the insole, preventing it from collapsing due to excessive perforation during long-term use. This maintains basic support and comfort for the foot, achieving a perfect combination of breathability and support.

[0029] The implementation principle of this application embodiment is as follows: When the wearer walks, the foot steps down, applying downward pressure to the upper layer 3. This pressure is transmitted to the bottom layer 1 through the support column 35, causing the elastic EVA material sole to undergo overall compression deformation. Specifically, the volume of the hollow cavity 21 in the middle layer 2 is compressed and reduced, and the internal pressure increases, forming a pressurized airflow. This airflow has two main paths: one upward, which is ejected through the ventilation hole 22 in the forefoot of the middle layer 2 and the first ventilation hole 34 in the upper layer 3, directly acting on the sole of the foot; the other is discharged laterally from the lateral ventilation hole 23 on the side wall of the middle layer 2. When the foot is lifted and the pressure is released, the high elasticity of the EVA material causes the sole to quickly rebound and return to its original shape. At this time, the volume of the hollow cavity 21 of the middle layer 2 increases, and a negative pressure (i.e., a local vacuum) is formed inside, generating a strong suction force. Under the action of atmospheric pressure, fresh air from the outside is preferentially drawn in from the path of least resistance—that is, the lateral vent 23 on the side wall of the middle layer 2. The drawn-in air first enters the hollow cavity 21, and then part of it goes upward through the vent 22 and the first vent 34 into the shoe, while the other part diffuses to a wider area of ​​the sole through the upper and lower airflow channels formed by the support column 35, completing a complete "inhalation-exhaustion" cycle. During this process, the breathable mesh midsole 32 ensures that airflow can pass through without obstruction, while the honeycomb insole 33 disperses and homogenizes the concentrated airflow from the first ventilation hole 34, so that the coolness is evenly distributed to the entire sole of the foot; in this way, with each step the user takes, the sole of the shoe automatically completes an effective breathing and ventilation cycle.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A breathable shoe sole, characterized in that: It includes a bottom layer (1), a middle layer (2), and an upper layer (3) arranged from bottom to top; The middle layer (2) is a frame structure with a hollow cavity (21) that runs through the front and back. The front palm area of ​​the middle layer (2) has multiple ventilation holes (22). The upper layer (3) has multiple first ventilation holes (34) that penetrate its thickness in the forefoot area. The lower surface of the upper layer (3) is provided with multiple support columns (35) that extend downward and support the bottom layer (1). The support columns (35) connect the upper layer (3) and the bottom layer (1) into one unit, and form an upper airflow channel between the lower surface of the upper layer (3) and the upper surface of the middle layer (2), and form a lower airflow channel between the upper surface of the bottom layer (1) and the lower surface of the middle layer (2). The middle layer (2) has a lateral vent (23) on its side wall that communicates with the hollow cavity (21).

2. The breathable shoe sole according to claim 1, characterized in that: The upper layer (3) is also provided with a midsole (32) and an insole (33). The midsole (32) is made of breathable mesh fabric, and the bottom surface of the insole (33) is a honeycomb structure.

3. The breathable shoe sole according to claim 1, characterized in that: The upper layer (3), the support column (35), and the bottom layer (1) are formed into a whole by a one-time injection EVA process.

4. A breathable shoe sole according to claim 1, characterized in that: The bottom layer (1) is a wear-resistant sheet made of rubber.

5. A breathable shoe sole according to claim 1, characterized in that: The upper layer (3) is internally embedded with a carbon fiber plate (31).

6. A breathable shoe sole according to claim 1, characterized in that: The area of ​​the top of the support column (35) connected to the lower surface of the upper layer (3) is S1, the total area of ​​the lower surface of the upper layer (3) is S2, and the ratio of S1 to S2 is greater than or equal to 80%.

7. A breathable shoe sole according to claim 1, characterized in that: The first vent (34) is a round hole.

8. A breathable shoe sole according to claim 2, characterized in that: The lower surface of the insole (33) has a honeycomb structure, and the area of ​​its breathable part accounts for 50% of the total area of ​​the insole.

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