Tesla valve breathing shoe sole with adjustable hardness

Abstract

The utility model discloses a hardness-adjustable Tesla valve breathing shoe sole, the upper surface of the shoe sole is provided with a stress groove, a replaceable stress block is embedded in the stress groove, a breathing structure is arranged in the shoe sole, the breathing structure comprises an air bin and an air channel communicated with the air bin, and the air channel is communicated with the air bin. The stress block is provided with an air passage which is communicated with the air passage and is the same as the air flow direction of the air passage, the air passage and the air passage form a breathing air passage, one end of the breathing air passage is communicated into the shoe, the other end of the breathing air passage is communicated with the outside, and the air passage and the air passage are both of a Tesla valve structure. A wearer can replace the stress blocks with different hardness according to actual requirements, the overall hardness of the sole is flexibly adjusted, proper support and comfort are provided for the foot, and the wearing adaptability and functionality are remarkably improved; in addition, through the daily walking process of the wearer, air flow circulation in the shoe is formed, air flow in the shoe is improved, the interior of the shoe is kept dry and cool, and air in the shoe is kept fresh and dry.

Description

Technical Field

[0001] This utility model relates to the field of shoemaking technology, specifically a Tesla valve breathable shoe sole with adjustable softness and hardness. Background Technology

[0002] Shoes are an indispensable part of people's daily lives, and they generally have functions such as breathability, dryness, warmth, and slip resistance. As people's living standards improve, their requirements for shoes are also getting higher and higher. In addition to their protective function, people are paying more attention to the comfort of shoes.

[0003] Currently, once a shoe sole is formed, its firmness is fixed and cannot be adjusted according to the wearer's needs in different scenarios. For example, during daily walking, people may prefer a softer sole for a comfortable feel; while during running, jumping, and other sports, a certain degree of firmness is needed to provide sufficient support and stability to reduce impact damage to the feet and joints. However, existing shoe soles cannot meet these diverse needs simultaneously, and the current sole structure makes it difficult to achieve efficient air circulation. When people walk or exercise for a long time, their feet sweat a lot, and the air inside the shoe cannot be exchanged with the outside in time, resulting in a stuffy and humid environment inside the shoe. This not only breeds bacteria and produces odors but also greatly affects wearing comfort and may even cause foot skin problems. Some shoes have ventilation holes or air channels for ventilation, but ordinary ventilation holes or simple air channels are prone to air backflow, affecting breathing and failing to create a consistently dry and comfortable microenvironment for the feet. Utility Model Content

[0004] The purpose of this invention is to provide a Tesla valve breathable shoe sole with adjustable softness and hardness to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a Tesla valve breathable sole with adjustable hardness, wherein a force-bearing groove is formed on the upper surface of the sole, a replaceable force-bearing block is embedded in the force-bearing groove, a breathing structure is provided inside the sole, the breathing structure includes an air chamber and an air passage connected to the air chamber, the force-bearing block has a ventilation passage connected to the air passage and in the same direction as the airflow of the air passage, the air passage and the ventilation passage form a breathing air passage, one end of the breathing air passage is connected to the inside of the shoe, and the other end is connected to the outside, both the air passage and the ventilation passage are Tesla valve structures.

[0006] Furthermore, the force-bearing groove is provided at the corresponding forefoot and / or arch position.

[0007] Furthermore, the air chamber is positioned at the corresponding heel position.

[0008] Furthermore, the breathing airway includes an inlet airway and an outlet airway. The ventilation channel is either a partial inlet airway or a partial outlet airway. The inlet airway and the outlet airway are respectively connected to the air chamber. The end of the inlet airway away from the air chamber forms an air inlet hole that communicates with the air inside the shoe. The end of the outlet airway away from the air chamber forms an outlet hole that communicates with the outside air. The direction from the air inlet hole to the air chamber is a low-resistance direction, and the direction from the outlet hole to the air chamber is a high-resistance direction.

[0009] Furthermore, the air outlet extends along the air chamber direction to the rear of the sole, corresponding to the heel edge or the sidewall of the sole.

[0010] Furthermore, the portion of the air vent exposed on the sidewall of the sole forms a visible air vent.

[0011] Furthermore, the air intake includes an air intake channel and an air guide channel. The air intake channel is located at the corresponding foot position and has an air intake hole. The air guide channel connects the air intake channel to the air chamber position.

[0012] Furthermore, the breathing airway includes an inlet airway and an outlet airway. The ventilation channel is either a partial inlet airway or a partial outlet airway. The inlet airway and the outlet airway are respectively connected to the air chamber. The end of the inlet airway away from the air chamber forms an inlet hole that communicates with the outside air. The end of the outlet airway away from the air chamber forms an outlet hole that communicates with the air inside the shoe. The direction from the inlet hole to the air chamber is a low-resistance direction, and the direction from the outlet hole to the air chamber is a high-resistance direction.

[0013] Furthermore, the sole includes a midsole and an outsole. The force-bearing block is embedded in the midsole. The lower surface of the midsole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. The lower surface of the force-bearing block is concave to form a ventilation groove. When the outsole is tightly fitted with the midsole, it forms an air chamber, an air inlet groove, and an air outlet groove with the air chamber groove, the air inlet groove, the air outlet groove, and the ventilation groove.

[0014] Furthermore, the sole includes a midsole and an outsole. The force-bearing block is embedded in the midsole. The upper surface of the midsole is concave to form an air intake groove. The surface of the force-bearing block is concave to form a ventilation groove. The lower surface of the midsole is concave to form an air chamber groove and an air outlet groove. When a sealing strip is attached to the midsole, it forms an air intake groove with the air intake groove or a ventilation groove. When the outsole is tightly attached to the midsole, it forms an air chamber and an air outlet groove with the air chamber groove or a ventilation groove.

[0015] Furthermore, the upper surface of the sole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove, and the upper surface of the force-bearing block is concave to form a ventilation groove. When a sealing strip is tightly fitted to the sole, it forms an air chamber, an air inlet, and an air outlet between itself and the air chamber groove, the air inlet groove, the air outlet groove, and the ventilation groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The replaceable force-bearing blocks embedded in the grooves on the sole surface of this utility model allow the wearer to replace the force-bearing blocks with different softness and hardness according to actual needs, flexibly adjusting the overall softness and hardness of the sole to provide just the right support and comfort for the feet, significantly improving the adaptability and functionality of the shoes. Moreover, the force-bearing blocks can be replaced in time when they wear out due to long-term use. The air chambers and air channels allow the shoes to achieve a cyclical air intake and exhaust process during the wearer's daily walking, forming an airflow circulation inside the shoe, achieving a breathing effect for the shoe, improving the air flow inside the shoe, keeping the inside of the shoe dry and cool, keeping the air inside the shoe fresh and dry, effectively solving the problem of stuffy and damp feet, and improving the comfort of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a Tesla valve breathable shoe sole structure with adjustable softness and hardness, according to a specific embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the assembly structure of a Tesla valve breathable shoe sole with adjustable softness and hardness according to a specific embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of another assembly structure of the Tesla valve breathable shoe sole with adjustable softness and hardness according to a specific embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the assembly structure of the Tesla valve breathable shoe sole with adjustable softness and hardness, which is a specific embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the midsole structure of a Tesla valve breathable shoe sole with adjustable softness and hardness, according to a specific embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the adjustable hardness Tesla valve breathable shoe sole structure of a specific embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the assembly structure of the Tesla valve breathable shoe sole with adjustable softness and hardness, according to a specific embodiment of this utility model.

[0024] Figure 8 This is a schematic diagram of the adjustable hardness Tesla valve breathable shoe sole structure of a specific embodiment of this utility model;

[0025] Figure 9 This is one of the schematic diagrams of the assembly structure of the Tesla valve breathable shoe sole with adjustable softness and hardness in the fourth specific embodiment of this utility model;

[0026] Figure 10This is the second schematic diagram of the assembly structure of the Tesla valve breathable shoe sole with adjustable softness and hardness, which is a specific embodiment of this utility model.

[0027] In the diagram, 100-sole, 101-midsole, 102-outsole, 103-sealing strip, 1-stress groove, 2-stress block, 21-ventilation channel, 3-air chamber, 41-air inlet, 42-air outlet, 43-air inlet, 44-air outlet, 41'-air inlet, 42'-air outlet, 43'-air inlet, 44'-air outlet. Detailed Implementation

[0028] 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. Specific Implementation Example 1:

[0030] like Figures 1-3As shown, this embodiment provides a Tesla valve breathable shoe sole 100 with adjustable hardness. The upper surface of the sole has a force-bearing groove 1, and a replaceable force-bearing block 2 is embedded in the force-bearing groove 1. The sole 100 includes a midsole 101 and an outsole 102. The force-bearing block 2 is embedded in the midsole 101. The midsole 101 is made of TPU foam particles. TPU foam particles have low density, good wear resistance, low hardness, good resilience, high tensile strength, and good tear resistance, making the sole lightweight, elastic, and cushioning, thus increasing the shock absorption performance of the sole. The outsole 102 is made of rubber material, which has good wear resistance. The force-bearing block 2 can be made of EVA, TPU, PU, ​​TPE, or silicone materials. Made of materials such as memory foam and carbon fiber composites, the shoe allows wearers to replace the pressure blocks 2 with different firmnesses according to their actual needs, flexibly adjusting the overall firmness of the sole to provide just the right support and comfort for the feet, significantly improving the adaptability and functionality of the shoes. Furthermore, when the pressure blocks 2 wear out due to long-term use or the ventilation channels 21 collapse, they can be replaced promptly. The pressure grooves 1 are located at the corresponding forefoot and / or arch positions. The forefoot is the main force-generating part of the body during walking and running, while the arch supports body weight and cushions shocks. By setting pressure grooves 1 and embedding pressure blocks 2 at these two positions, additional support can be provided for the forefoot and arch according to the principles of human biomechanics. Moreover, different activities require different levels of sole firmness. The forefoot needs a certain degree of elasticity to assist the push-off motion during running, while requiring sufficient firmness to support body weight when standing. The arch provides appropriate support and cushioning depending on the sport. By incorporating replaceable pressure blocks 2 in these two locations, the firmness of the sole can be adjusted more precisely to address the stress characteristics of the forefoot and arch. For example, in sports like basketball that require frequent jumping and sudden stops, a firmer pressure block 2, such as one made of PU or TPE material, can be installed in the forefoot and arch areas to provide better support and stability. Conversely, in gentler sports like yoga, a softer pressure block 2, such as one made of silicone, can be used to increase foot comfort and flexibility. For those who walk frequently, the elderly, pregnant women, and people with foot injuries or diseases can replace the pressure block 2 with a softer one, such as memory foam or EVA material, to reduce foot pressure and alleviate fatigue during walking. Most ordinary adults can replace it with a medium-hardness pressure block 2, such as EVA or TPU material, to balance comfort and support. For those who walk for long periods of time frequently and have high requirements for foot support, such as deliverymen, tour guides, and people who enjoy brisk walking, a harder pressure block 2 can be replaced with a harder one, such as carbon fiber composite material or EVA material, to provide strong support, maintain good foot stability, reduce discomfort caused by foot fatigue, effectively reduce foot deformation, and maintain the normal posture of the foot.The sole 100 is equipped with a breathing structure, which includes an air chamber 3 and an air passage connected to the air chamber 3. The force-bearing block 2 has a ventilation channel 21 connected to the air passage and in the same direction as the airflow. The air passage and the ventilation channel 21 form a breathing air passage 4. One end of the breathing air passage 4 is connected to the inside of the shoe, and the other end is connected to the outside. The air chamber 3 can be set at the corresponding heel position, which is the part of the body that bears the greatest impact when walking and running. Setting it here can also provide better shock absorption protection. The air passage includes an air inlet 41 and an air outlet 42. The ventilation channel 21 is a partial air inlet. The air inlet 41 and the air outlet 42 are respectively connected to the air chamber 3. The air duct 41 forms an air inlet 43 at the end opposite to the air chamber 3, which communicates with the air inside the shoe. The air outlet duct 42 forms an air outlet 44 at the end opposite to the air chamber 3, which communicates with the outside air. The air inlet duct 41 is located at the corresponding foot position and includes an air inlet channel 411 and an air guide channel 412. The air inlet channel 411 is located at the corresponding foot position and the air inlet 43 is provided on the air inlet channel 411. The air guide channel 412 connects the air inlet channel 411 to the air chamber 3. The air inlet 43 extends through the upper surface of the sole and communicates with the inside of the shoe. The air inlet duct 41 is a one-way air inlet channel. The one-way air inlet channel has a Tesla valve structure. The direction from the air inlet 43 to the air chamber 3 is a low-resistance direction, such as... Figure 2 and Figure 3As shown, the air duct 42 extends from the air chamber 3 to the outer side of the sole. The air outlet 44 is located on the outer side of the sole, either at the rear or the side. When located on the side, the air duct 42 also extends to the side, forming a visible air duct 42. To enhance visibility, a transparent sealing strip seals the extended air duct 42, and a through hole matching the air outlet 44 is opened on the transparent sealing strip, allowing the user to intuitively perceive the exhaust effect. The air duct 42 is also a one-way exhaust channel, which has a Tesla valve structure. The direction from the air outlet 44 to the air chamber 3 is high-resistance. Specifically, the lower surface of the midsole 102 is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. The lower surface of the force-bearing block 2 is concave to form a ventilation groove. When the outsole 101 is tightly fitted with the midsole 102, it forms an air chamber 3, an air inlet 41, and an air outlet 42 between itself and the air chamber groove, air inlet groove, air outlet groove, and ventilation groove. Since the air chamber groove, air inlet groove, and air outlet groove are all located on the lower surface of the midsole 102, and the ventilation groove is located on the lower surface of the force-bearing block 2, the force-bearing groove 1 penetrates the midsole 102 and is embedded in the midsole 102. Alternatively, a ventilation channel 21 can be formed inside the force-bearing block 2, for example, using 3D printing. The device prints a force-bearing block 2. The lower surface of the midsole 102 is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. When the outsole 101 is tightly fitted with the midsole 102, it forms an air chamber 3, an air inlet 41, and an air outlet 42 between itself and the air chamber groove, air inlet groove, and air outlet groove. A through hole is provided at the connection position between the air inlet 41 and the ventilation channel 21, so that the air inlet 41 and the ventilation channel 21 are connected. The force-bearing groove 1 penetrates the midsole 102 and is embedded in the midsole 102. When the wearer walks, when the foot steps down, the air chamber 3 is compressed under the action of the wearer's weight. Due to the one-way nature of the Tesla valve, the airflow is difficult to enter through the air inlet 43. The air intake duct 41 allows airflow to pass through the air outlet duct 42 and be blown out through the air outlet 44. The airflow blown out through the air outlet 44 is discharged outside the shoe. Correspondingly, when the foot is lifted, the air chamber 3 returns to its original position. Due to the one-way nature of the Tesla valve, it is difficult for outside air to enter through the air outlet duct 42. Therefore, the hot and humid air inside the shoe is drawn into the air chamber 3 through the air intake duct 43 and the air intake duct 41. When the lifted foot touches the ground again, it compresses the air chamber 3 again. The hot and humid air inside the air chamber 3 is blown out through the air outlet duct 42 and the hot and humid air blown out through the air outlet 44 is discharged outside the shoe. This cycle is repeated to achieve one-way exhaust and expel the hot and humid air inside the shoe. Specific Implementation Example 2:

[0032] like Figure 4 and Figure 5 As shown, this embodiment has the same sole 100, force-bearing groove 1, force-bearing block 2, air chamber 3, and air passage as specific embodiment one. The difference from the specific embodiment is that the airflow directions of the air inlet and outlet are different, as shown below. Figure 7 and Figure 8As shown, the end of the air intake duct 41' facing away from the air chamber 3 forms an air intake hole 43' that communicates with the outside air, and the end of the air outlet duct 42' facing away from the air chamber 3 forms an air outlet hole 44' that communicates with the air inside the shoe. The ventilation duct 21 is a partial air intake duct 41', and the air outlet duct 42' is arranged at the corresponding foot position. The air outlet hole 44' extends through the upper surface of the sole and communicates with the inside of the shoe. Both the air intake duct 41' and the air outlet duct 42' are Tesla valve structures. The direction from the air intake hole 43' to the air chamber 3 is a low-resistance direction, and the direction from the air outlet hole 44' to the air chamber 3 is a high-resistance direction. The air intake duct 41' can be located on the outside of the sole, and the air intake hole 43' is correspondingly located on the outside of the sole. It can be located at the rear of the sole or on the side of the sole. When located on the side of the sole, the air intake duct 41' also extends to the side, forming a... A visible air intake duct 41' is formed. To enhance the visualization effect, the extended air intake duct 41' is sealed by a transparent sealing strip, and a through hole matching the air intake hole 43' is opened on the transparent sealing strip, allowing users to intuitively feel the air intake effect. When the wearer walks, the pressure of the sole 100 when stepping down causes the air chamber 3 to compress. When the foot is lifted, the air chamber 3 returns to its original shape. Due to the one-way nature of the Tesla valve, outside air enters the air chamber 3 from the air intake hole 43' through the air intake duct 41'. When the foot is stepped down again, the pressure of the sole 100 causes the air chamber 3 to compress again. Due to the one-way nature of the Tesla valve, the air in the air chamber 3 enters the shoe through the air outlet duct 42' and the air outlet hole 44', injecting fresh air into the shoe and ventilating the inside of the shoe, realizing one-way air intake, and injecting fresh air from outside the shoe into the shoe in one direction. Specific Implementation Example 3:

[0034] like Figure 6 and Figure 7As shown, this embodiment has the same sole 100, force-bearing groove 1, force-bearing block 2, air chamber 3, and air passage as specific embodiment one or specific embodiment two. The difference is that the upper surface of the sole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove; the upper surface of the force-bearing block is concave to form a ventilation groove. When a sealing strip 103 is tightly fitted to the sole, it forms an air chamber 3, an air inlet (41, 41'), and an air outlet (42, 42') with the air chamber groove, air inlet groove, air outlet groove, and ventilation groove. Since the air chamber groove, air inlet groove, and air outlet groove are all located on the upper surface of the sole 100, and the ventilation groove is located on the upper surface of the force-bearing block 2... The stress-bearing groove 1 may or may not penetrate the midsole 102 and is embedded in the midsole 102. Alternatively, a ventilation channel 21 may be opened in the stress-bearing block 2. For example, the stress-bearing block 2 can be printed using a 3D printing device. The upper surface of the sole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. When a sealing strip 103 is tightly fitted to the sole, it forms an air chamber 3, an air inlet (41, 41'), and an air outlet (42, 42') between the air chamber groove, the air inlet groove, and the air outlet groove. A through hole is provided at the connection position between the air inlet 41 and the ventilation channel 21 so that the air inlet (41, 41') and the ventilation channel 21 are connected. The stress-bearing groove 1 may or may not penetrate the midsole 102 and is embedded in the midsole 102. Specific Implementation Example 4:

[0036] like Figures 8-10As shown, this embodiment has the same sole 100, force-bearing groove 1, force-bearing block 2, air chamber 3, and air passage as specific embodiment one, two, or three. The difference is that the sole includes a midsole 101 and an outsole 102. The force-bearing block 2 is embedded in the midsole 101. The upper surface of the midsole 101 is concave to form an air intake groove, and the upper surface of the force-bearing block 2 is concave to form a ventilation groove. When a sealing strip is attached to the midsole, it connects with the air intake groove and the ventilation groove. An air intake duct 41 is formed between the grooves. Alternatively, a ventilation duct 21 can be formed within the stress block 2. For example, the stress block 2 can be printed using a 3D printing device. When a sealing strip is attached to the midsole, an air intake duct 41 is formed between it and the air intake groove. A through hole is provided at the connection position between the air intake duct 41 and the ventilation duct 21, so that the air intake duct 41 and the ventilation duct 21 are connected. The lower surface of the midsole 101 is concave to form an air chamber groove and an air outlet groove. When the outsole 102 is tightly attached to the midsole 101, an air chamber 3 and an air outlet groove are formed between it and the air chamber groove and the air outlet groove. A through hole is provided at the connection position of the air inlet 41 and the air outlet 42, so that the air inlet 41 and the air outlet 42 are connected. The force-bearing groove 1 can penetrate or not penetrate the midsole 102 and is embedded in the midsole 102. In this way, the outsole can only cover the area of ​​the air chamber 3 and the air outlet 42, or cover the rear part of the air chamber 3 and the air outlet 42, saving material of the outsole 102 and saving costs. Alternatively, the upper surface of the midsole 101 is concave to form an air inlet groove, and the lower surface of the force-bearing block 2 is concave to form a ventilation groove. A sealing strip and When the midsole 101 is fitted together, an air intake 41 is formed between it and the air intake groove. The lower surface of the midsole 101 is concave to form an air chamber groove and an air outlet groove. When the outsole 102 is tightly fitted together with the midsole 101, an air chamber 3, an air duct 21, and an air outlet 42 are formed between it and the air chamber groove, the air duct groove, and the air outlet groove. A through hole is provided at the connection position of the air intake 41 and the air duct 21 so that the air intake 41 and the air duct 21 are connected. A through hole is provided at the connection position of the air intake 41 and the air outlet 42 so that the air intake 41 and the air outlet 42 are connected.

[0037] This invention features replaceable pressure blocks embedded in grooves on the sole surface of the shoe. Wearers can replace these blocks with different levels of softness and hardness according to their needs, flexibly adjusting the overall softness and hardness of the sole to provide just the right amount of support and comfort for the feet. This significantly improves the adaptability and functionality of the shoe. Moreover, the pressure blocks can be replaced promptly when they wear out due to long-term use. The design also incorporates air chambers and air channels, allowing the shoe to repeatedly inhale and exhale during daily walking, creating airflow circulation within the shoe. This achieves a breathing effect, improving airflow inside the shoe, keeping it dry and cool, and effectively solving the problems of stuffy and damp feet, thus enhancing comfort.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Tesla valve breathable shoe sole with adjustable softness and hardness, characterized in that: The sole has a stress-bearing groove, and a replaceable stress-bearing block is embedded in the stress-bearing groove. The sole has a breathing structure, which includes an air chamber and an air passage connected to the air chamber. The stress-bearing block has a ventilation passage connected to the air passage and in the same direction as the airflow of the air passage. The air passage and the ventilation passage form a breathing air passage. One end of the breathing air passage is connected to the inside of the shoe, and the other end is connected to the outside. Both the air passage and the ventilation passage are Tesla valve structures.

2. The adjustable-hardness Tesla valve breathable sole according to claim 1, characterized in that: The force-bearing groove is located at the corresponding forefoot and / or arch position.

3. The adjustable-hardness Tesla valve breathable sole according to claim 1, characterized in that: The air chamber is positioned at the corresponding heel position.

4. The adjustable-hardness Tesla valve breathable sole according to any one of claims 1 to 3, characterized in that: The breathing airway includes an inlet airway and an outlet airway. The ventilation channel is either a partial inlet airway or a partial outlet airway. The inlet airway and the outlet airway are respectively connected to the air chamber. The end of the inlet airway away from the air chamber forms an air inlet hole that communicates with the air inside the shoe. The end of the outlet airway away from the air chamber forms an outlet hole that communicates with the outside air. The direction from the air inlet hole to the air chamber is a low-resistance direction, and the direction from the outlet hole to the air chamber is a high-resistance direction.

5. The adjustable-hardness Tesla valve breathable sole according to claim 4, characterized in that: The air outlet extends along the air chamber direction to the rear of the shoe sole, corresponding to the edge of the heel or the side wall of the sole.

6. The adjustable-hardness Tesla valve breathable sole according to claim 5, characterized in that: The portion of the air vent exposed on the side wall of the sole forms a visible air vent.

7. The adjustable-hardness Tesla valve breathable sole according to claim 4, characterized in that: The air intake includes an air intake channel and an air guide channel. The air intake channel is located at the corresponding foot position and has an air intake hole. The air guide channel connects the air intake channel to the air chamber position.

8. The adjustable-hardness Tesla valve breathable sole according to any one of claims 1 to 3, characterized in that: The breathing airway includes an inlet airway and an outlet airway. The ventilation channel is either a partial inlet airway or a partial outlet airway. The inlet airway and the outlet airway are respectively connected to the air chamber. The end of the inlet airway away from the air chamber forms an inlet hole that communicates with the outside air. The end of the outlet airway away from the air chamber forms an outlet hole that communicates with the air inside the shoe. The direction from the inlet hole to the air chamber is the low-resistance direction, and the direction from the outlet hole to the air chamber is the high-resistance direction.

9. The adjustable-hardness Tesla valve breathable sole according to claim 1, characterized in that: The sole includes a midsole and an outsole. The force-bearing block is embedded in the midsole. The lower surface of the midsole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. The lower surface of the force-bearing block is concave to form a ventilation groove. When the outsole is tightly fitted with the midsole, it forms an air chamber, an air inlet groove, and an air outlet groove with the air chamber groove, the air inlet groove, the air outlet groove, and the ventilation groove.

10. The adjustable-hardness Tesla valve breathable sole according to claim 1, characterized in that: The sole includes a midsole and an outsole. The force-bearing block is embedded in the midsole. The upper surface of the midsole is concave to form an air intake groove. The surface of the force-bearing block is concave to form a ventilation groove. The lower surface of the midsole is concave to form an air chamber groove and an air outlet groove. When a sealing strip is attached to the midsole, it forms an air intake groove with the air intake groove or a ventilation groove. When the outsole is tightly attached to the midsole, it forms an air chamber and an air outlet groove with the air chamber groove or a ventilation groove.

11. The adjustable-hardness Tesla valve breathable sole according to claim 1, characterized in that: The upper surface of the sole is concave to form an air chamber groove, an air inlet groove, and an air outlet groove. The upper surface of the force-bearing block is concave to form a ventilation groove. When a sealing strip is tightly fitted to the sole, it forms an air chamber, an air inlet, and an air outlet between itself and the air chamber groove, the air inlet groove, the air outlet groove, and the ventilation groove.

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