One-way valve and one-way exhaust sole thereof

Abstract

The one-way valve is provided with an elastic channel, the rear end of the elastic channel is provided with a flat opening to form an air outlet end, surrounding edges used for preventing the air outlet end from being exposed are arranged on the upper side and the lower side of the air outlet end, and the surrounding edges are connected with the elastic channel and are not in contact with the air outlet end. When fluid pressure is applied to the elastic channel, the elastic channel is opened under the action of the fluid pressure, the fluid is discharged through the air outlet end, and when the fluid pressure disappears, the elastic channel is closed under the action of elastic force, and backflow of the fluid is prevented. An exhaust structure and the one-way valve are arranged in the sole, the exhaust structure comprises an air bin and an air channel communicated with the air bin, one end of the air channel is communicated into the shoe, the other end of the air channel is communicated with the outside of the shoe, and the one-way valve is arranged on the air channel and is in the same direction as air flow of the air channel. The one-way valve is integrally formed by adopting an elastic material without movable parts, so that the surface of the air outlet end can be effectively prevented from being accidentally adhered to be in a normally open state, and the one-way conduction function of the one-way valve is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shoe sole structure, and specifically relates to a one-way valve and one-way exhaust shoe sole. BACKGROUND

[0002] Due to poor air circulation in the shoe, foot sweating is aggravated, and the foot is in a humid environment for a long time, especially for people with "sweaty feet", which not only causes foot odor, but also easily causes foot diseases. The existing breathable shoes generally have exhaust holes in the shoe sole, and a film with water blocking and breathable functions is installed at the exhaust hole to achieve the purpose of emitting hot air. However, such breathable shoes can only dissipate heat, and the breathable effect is not obvious. In addition, the shoe sole air holes are easily blocked by dust, losing the breathable function, and are only suitable for indoor or clean environment, so a breathing breathable shoe appears. The breathing breathable shoe generally has an elastic air bag at the heel of the shoe sole, a one-way air inlet valve and an air inlet pipe are arranged at the front end of the elastic air bag, the air inlet pipe is open at one end and arranged at the forefoot of the shoe sole, the other end of the air inlet pipe is open and connected with the inner cavity of the elastic air bag, a one-way air outlet valve is arranged at the rear end or side end of the elastic air bag, a mounting hole is arranged at the position corresponding to the one-way air outlet valve of the shoe sole, the one-way air outlet valve is mounted in the mounting hole, one end of the one-way air outlet valve is connected with the outside of the shoe body, and the other end of the one-way air outlet valve is connected with the inner cavity of the elastic air bag. The breathing of the shoe body is realized by the cooperation of the elastic air bag, the air inlet pipe and the air outlet pipe. However, the two structures do not have waterproof function. If it rains or steps into a puddle, some water droplets will be attached to the surface of the shoe, especially the water droplets at the exhaust hole are easily sucked into the air bag, which causes water accumulation in the air bag and water inflow in the shoe. The waterproof effect is poor, and the traditional one-way valve usually adopts a valve flap and a spring structure. In the long-term use process, the valve flap is easy to wear out, and the spring may also appear fatigue failure, losing the one-way conduction function. Some one-way valves have no structure inside, and the closing is realized by the elastic effect of the upper and lower elastic sheets. However, when the one-way valve is sleeved on the shoe sole, the midsole and the outsole of the shoe sole need to be bonded to realize bonding. In the bonding process, the upper and lower elastic sheets are easily bonded, so that the upper and lower elastic sheets are bonded by the shoe sole and are in the open state, losing the one-way conduction function. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a one-way valve and one-way exhaust shoe sole to solve the problems in the background technology.

[0004] To achieve the above objectives, one of the technical solutions provided by this utility model is a one-way valve: the one-way valve is made of an elastic material and has an elastic channel. The rear end of the elastic channel is provided with a flat opening to form an air outlet. The upper and lower sides of the air outlet are provided with rims to prevent the air outlet from being exposed. The rims are connected to the elastic channel but not in contact with the air outlet. When fluid pressure is applied to the elastic channel, the elastic channel opens under the action of fluid pressure, and the fluid is discharged through the air outlet. When the fluid pressure disappears, the elastic channel closes under the action of elastic force to prevent fluid backflow.

[0005] Furthermore, one end of the elastic channel is an air inlet and the other end is an air outlet. The elastic channel has an inclined surface or a curved surface, and the inclination of the inclined surface or the curvature of the curved surface gradually decreases from the air inlet to the air outlet.

[0006] Furthermore, the surrounding edge is integrally formed with the elastic channel.

[0007] The second technical solution provided in this embodiment is a one-way exhaust shoe sole. The shoe sole is provided with an exhaust structure and the aforementioned one-way valve. The exhaust structure includes an air chamber and an air passage communicating with the air chamber. One end of the air passage is connected to the inside of the shoe, and the other end is connected to the outside of the shoe. The one-way valve is disposed on the air passage and is in the same direction as the airflow of the air passage.

[0008] Furthermore, the air chamber is positioned at the corresponding heel position.

[0009] Furthermore, the air passage includes an air inlet and an air outlet. The end of the air inlet facing away from the air chamber forms an air inlet hole that communicates with the air inside the shoe, and the end of the air outlet facing away from the air chamber forms an air outlet hole that communicates with the outside of the shoe.

[0010] Furthermore, the one-way valve is installed on the air intake duct to allow airflow to enter the air chamber in one direction from the air intake hole.

[0011] Furthermore, the air intake is a Tesla valve structure, with a low-resistance direction from the air intake port to the air chamber.

[0012] Furthermore, the one-way valve is installed on the air outlet to allow airflow to be discharged unidirectionally from the air chamber to the air outlet.

[0013] Furthermore, the air outlet is a Tesla valve structure, with a high resistance direction from the air outlet to the air chamber.

[0014] Furthermore, the upper and / or lower surfaces of the sole are recessed inward to form air chamber grooves and air passage grooves. When a bonding piece is tightly bonded to the upper and / or lower surfaces of the sole, it forms air chambers and air passages with the air chamber grooves and air passage grooves.

[0015] Furthermore, the sole includes a midsole and an outsole. The lower surface of the midsole is recessed inward to form an air chamber groove and an air channel groove. When the upper surface of the outsole is sealed and bonded to the lower surface of the midsole, it forms an air chamber and an air channel with the air chamber groove and the air channel groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The one-way valve of this utility model is integrally molded from elastic material, without moving parts, which avoids the failure problem caused by wear and jamming of valve discs, springs and other components in traditional one-way valves, and improves the stability and service life of the product. The elastic channel opens under the action of fluid pressure and closes quickly under the action of elastic force when the fluid pressure disappears, which can accurately control the one-way flow of fluid. The surrounding edge set on the upper and lower sides of the outlet end is connected to the elastic channel, for example, it can be integrally molded with the elastic channel, which simplifies the production process. It does not contact the outlet end, which can effectively prevent the outlet end surface from being accidentally stuck and in a normally open state, ensuring the reliability of the one-way conduction function of the one-way valve.

[0018] 2. The one-way ventilation sole of this utility model has an air chamber and air channel on the sole, with a one-way valve set on the air channel. This allows the shoe to achieve a repeated air intake and exhaust process during the wearer's daily walking, forming an airflow circulation inside the shoe. This improves the airflow inside the shoe, effectively expelling heat and sweat, keeping the inside of the shoe dry and cool, enhancing breathability, and improving comfort. The elastic channel of the one-way valve closes quickly when the fluid pressure disappears, preventing external water and air from opening the closed opening to enter the shoe, thus enhancing the shoe's waterproof performance. It is suitable for various weather and environments, especially providing better waterproof protection in rainy weather or when walking in water. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the one-way valve structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the one-way valve of this utility model from another view.

[0021] Figure 3 This is a schematic diagram of the unidirectional exhaust shoe sole structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the unidirectional exhaust shoe sole assembly structure according to Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of another assembly structure for a one-way exhaust shoe sole according to Embodiment 1 of this utility model;

[0024] Figure 6 This is a schematic diagram of the unidirectional exhaust shoe sole assembly structure according to Embodiment 2 of this utility model;

[0025] Figure 7 This is a schematic diagram of the unidirectional exhaust shoe sole assembly structure of Embodiment 3 of this utility model;

[0026] Figure 8 This is a schematic diagram of another assembly structure for the unidirectional exhaust shoe sole according to Embodiment 3 of this utility model;

[0027] Figure 9 This is a schematic diagram of another assembly structure for the unidirectional exhaust shoe sole in Embodiment 3 of this utility model;

[0028] Figure 10 This is a schematic diagram of another assembly structure for the unidirectional exhaust shoe sole in Embodiment 3 of this utility model;

[0029] In the diagram, 100-sole, 101-midsole, 102-outsole, 1-one-way valve, 11-elastic channel, 12-air inlet, 13-air outlet, 14-edge, 2-air chamber, 3-air inlet, 31-air inlet hole, 32-groove, 4-air outlet, 41-air outlet hole, 42-groove. Detailed Implementation

[0030] 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.

[0031] like Figures 1-2As shown, this embodiment provides a one-way valve 1. The one-way valve 1 is made of an elastic material, such as rubber or silicone with good elastic recovery properties. It has a block structure and an elastic channel 11. The rear end of the elastic channel 11 is cut with a flat opening to form an outlet end 13. For example, a utility knife is used to cut along the rear end of the elastic channel 11 to form a flat opening. Thus, one end of the elastic channel 1 is the inlet end 12 and the other end is the outlet end 13. The elastic channel 1 has an inclined surface or a curved surface. The inclination of the inclined surface or the curvature of the curved surface gradually decreases from the inlet end 12 to the outlet end 13. When fluid pressure is applied to the elastic channel 1, the elastic channel 1... The valve opens downwards, allowing fluid to exit through the outlet 13. When the fluid pressure disappears, the elastic channel 1 closes under the action of elasticity, preventing fluid backflow. This way, the one-way valve has no moving parts, avoiding the failure problems caused by wear and jamming of valve discs, springs, and other components in traditional one-way valves, thus improving the stability and service life of the product. The outlet 13 is provided with a surrounding edge 14 on the upper and lower sides to prevent the outlet 13 from being exposed. The surrounding edge 14 is not in contact with the outlet 13, which can effectively prevent the outlet surface from being accidentally stuck and in a normally open state, ensuring the reliability of the one-way conduction function of the one-way valve. The surrounding edge 14 is connected to the elastic channel 1, for example, it can be integrally formed with the elastic channel 1, simplifying the production process.

[0032] like Figures 3-9 As shown, this embodiment provides a one-way venting sole. The sole has a venting structure and the aforementioned one-way valve. The venting structure includes an air chamber 2 and an air passage communicating with the air chamber. The air chamber 2 is located at the corresponding heel position, which is the part of the body that experiences the greatest impact when walking and running. Positioning it here provides better shock absorption and protection. One end of the air passage connects to the inside of the shoe, and the other end connects to the outside of the shoe. The one-way valve is located on the air passage and runs in the same direction as the airflow. In this embodiment, the air... The system includes an air inlet duct 3 and an air outlet duct 4. The air inlet duct 3 is positioned at the corresponding foot position. The end of the air inlet duct 31 facing away from the air chamber 2 forms an air inlet hole 31 that communicates with the air inside the shoe. The air inlet hole 31 extends through the upper surface of the sole. The end of the air outlet duct 4 facing away from the air chamber 2 forms an air outlet hole 3 that communicates with the outside of the shoe. A one-way valve 1 can be installed on the air inlet duct 3, the air outlet duct 4, or both. The air chamber 2, the air inlet duct 3, and the air outlet duct 4 are formed as follows:

[0033] 1. The upper surface of the sole is recessed inward to form an air chamber groove, an air inlet groove, and an air outlet groove. When a bonding piece is tightly attached to the upper surface of the sole, it forms an air chamber 2, an air inlet 3, and an air outlet 4 between itself and the air chamber groove, air inlet groove, and air outlet groove. The sole can be 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. It can also be made of EVA material, or other materials such as PU material, TPE material, etc., which are not limited here. The bonding piece is bonded to the upper surface of the sole by hot melt or adhesive.

[0034] 2. The lower surface of the shoe sole is recessed inward to form an air chamber groove, an air inlet groove, and an air outlet groove. When a bonding piece is tightly bonded to the lower surface of the shoe sole, it forms an air chamber 2, an air inlet 3, and an air outlet 4 between itself and the air chamber groove, the air inlet groove, and the air outlet groove. The material of the shoe sole and the bonding method with the bonding piece are the same as in method 1.

[0035] 3. The sole includes a midsole 101 and an outsole 102. 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. It can also be made of EVA material or other materials such as PU material, TPE material, etc., without limitation. The outsole 102 is made of rubber material, which has good wear resistance. The lower surface of the midsole 101 is recessed inward to form an air chamber groove, an air inlet groove, and an air outlet groove. When the upper surface of the outsole 102 is sealed and bonded to the lower surface of the midsole 101, it forms an air chamber 2, an air inlet 3, and an air outlet 4 between itself and the air chamber groove, the air inlet groove, and the air outlet groove.

[0036] 4. The sole 1 includes a midsole 101 and an outsole 102. The upper surface of the midsole 101 is recessed downward to form an air chamber groove and an air intake groove. When a bonding piece is tightly bonded to the upper surface of the midsole, an air chamber 2 and an air intake 3 are formed between the bonding piece and the air chamber groove and the air intake groove. An air outlet groove is recessed upward on the lower surface of the midsole 101. When the upper surface of the outsole 102 is sealed and bonded to the lower surface of the midsole 101, an air outlet 4 is formed between the outsole 102 and the air outlet groove.

[0037] This embodiment uses molding method 3 as an example for further explanation:

[0038] Example 1:

[0039] like Figure 4 and Figure 5As shown, the one-way valve 1 is installed on the air intake duct 3 to allow airflow to enter the air chamber 2 in one direction from the air intake port 31. The air intake duct 3 has a groove 32, and the one-way valve 1 is installed in the groove 32. The one-way valve 1 is positioned close to the air chamber 2. The air intake end 12 of the one-way valve 1 is connected to the air intake duct 3, and the air outlet end 13 faces the air chamber 2. The air intake duct 3 can be a normal flow channel or a one-way air intake channel, such as the flow channel of a Tesla valve structure. The direction from the air intake port 31 to the air chamber 2 is the low-resistance direction. The air intake port 31 is located at the end of the air intake duct 2. One valve can be installed. Multiple air vents can be provided, extending through the upper surface of the sole and connecting to the inside of the shoe. The air vent 4 is a one-way air intake channel, such as a flow channel in a Tesla valve structure. The direction from the air vent 41 to the air chamber 1 is a high-resistance direction, extending from the air chamber 2 to the outer side of the sole. The air vent 41 is located on the outer side of the sole, either at the rear or on the side. When located on the side, the air vent 4 also extends to the side, forming a visible air vent. To enhance visibility, a transparent sealing strip seals the extended air vent 4, and an opening is made on the transparent sealing strip. A through-hole matching the vent 41 allows the user to directly experience the exhaust effect. When the wearer walks and steps down, the air chamber 2 is compressed under the influence of body weight. Due to the single or double one-way nature of the one-way valve 1 and the Tesla valve, the elastic channel 1 is closed, making it difficult for airflow to enter the intake duct 3 through the inlet 31. Therefore, the airflow is blown out through the vent 41 via the outlet duct 4, and the airflow blown out of the vent 41 is discharged outside the shoe. Correspondingly, when the foot is lifted, the air chamber 2 returns to its original position. Due to the one-way nature of the Tesla valve, it is difficult for outside air to escape through the outlet 41. The hot and humid air inside the shoe enters through the air inlet 31 via the air outlet 4. The elastic channel 1 opens under the action of fluid pressure, and the fluid is discharged through the air outlet 13 and drawn into the air chamber 2. After the fluid pressure disappears, the elastic channel 1 closes under the action of elasticity to prevent fluid backflow. When the raised foot touches the ground again, it squeezes the air chamber 2 again. The hot and humid air in the air chamber 2 is blown out through the air outlet 4 via the air outlet 41. The hot and humid air blown out from the air outlet 41 is discharged outside the shoe. This cycle is repeated to achieve one-way exhaust and discharge the hot and humid air inside the shoe.

[0040] Example 2:

[0041] like Figure 6As shown, this embodiment has the same sole structure as Embodiment 1. The difference is that in this embodiment, the one-way valve 1 is located on the air outlet 4, allowing airflow to exit unidirectionally from the air chamber 2 to the air outlet 41. The air outlet 4 has a groove 42, and the one-way valve 1 is located within the groove 42. The one-way valve 1 is positioned close to the air chamber 2, with its inlet end 12 facing the air chamber 2 and its outlet end 13 connected to the air outlet 4. The air inlet 3 is a one-way air intake channel, similar to the flow channel of a Tesla valve structure. The direction from the air inlet 31 to the air chamber 2 is a low-resistance direction. 31 is located at the end of the air intake duct 2. One or more ducts can be installed, extending through the upper surface of the sole and communicating with the inside of the shoe. The air outlet duct 4 can be a regular flow channel or a one-way air intake channel, such as a flow channel with a Tesla valve structure. The direction from the air outlet 41 to the air chamber 1 is a high-resistance direction, extending from the air chamber 2 to the outer side of the sole. The air outlet 41 is located on the outer side of the sole, either at the rear or the side. When located on the side, the air outlet duct 4 also extends to the side, forming a visible air outlet duct. To enhance the visual effect, [further details are needed]. An extended air outlet 4 is sealed by a transparent sealing strip, and a through hole matching the air outlet 41 is made on the transparent sealing strip, allowing the user to intuitively feel the exhaust effect. When the wearer walks, the air chamber 2 is compressed under the action of body weight when the foot is stepped on. Due to the one-way nature of the Tesla valve, the airflow is difficult to enter the air intake 3 through the air inlet 31. Therefore, the airflow passes through the air outlet 4, and the elastic channel 1 opens under the action of fluid pressure. The fluid is discharged through the air outlet 13 and blown out from the air outlet 41. After the fluid pressure disappears, the elastic channel 1 opens under the action of elastic force. The system closes to prevent fluid backflow, allowing airflow from the vent 41 to escape from the shoe. Correspondingly, when the foot is lifted, the air chamber 2 returns to its original position. Due to the one-way nature of the Tesla valve, outside air is difficult to enter through the vent 4. Therefore, the hot and humid air inside the shoe is drawn into the air chamber 2 through the vent 31. When the lifted foot touches the ground again, it compresses the air chamber 2 again, and the hot and humid air inside the air chamber 2 is blown out through the vent 41 through the vent 4. The hot and humid air blown out from the vent 41 is then exhausted from the shoe. This cycle repeats, achieving one-way exhaust and expelling the hot and humid air from the shoe.

[0042] Example 3:

[0043] like Figures 7-10As shown, this embodiment has the same sole structure as Embodiment 1 or Embodiment 2. The difference is that the one-way valve 1 is simultaneously installed on both the air inlet duct 3 and the air outlet duct 4, allowing airflow to enter the air chamber 2 unidirectionally from the air inlet 31 and exit unidirectionally from the air chamber 2 to the air outlet 41. The one-way valve 1 is positioned close to the air chamber 2. The air inlet end 12 of the one-way valve 1 on the air inlet duct 3 is connected to the air inlet duct 3, and the air outlet end 13 faces the air chamber 2. Similarly, the air inlet end 12 of the one-way valve 1 on the air outlet duct 4 faces the air chamber 2, and the air outlet end 13 is connected to the air outlet duct 4. The air inlet duct 3 can be a normal flow channel or a single-flow channel. The air intake channel, such as a flow channel with a Tesla valve structure, has a low-resistance direction from the air intake hole 31 to the air chamber 2. The air intake hole 31 is located at the end of the air intake channel 2; one or more holes can be provided. It extends through the upper surface of the sole and communicates with the inside of the shoe. The air outlet channel 4 can be a regular flow channel or a one-way air intake channel, such as a flow channel with a Tesla valve structure. The direction from the air outlet hole 41 to the air chamber 1 has a high-resistance direction, extending from the air chamber 2 to the outer side of the sole. The air outlet hole 41 is located on the outer side of the sole, either at the rear or the side. When located on the side, the air outlet channel 4 also extends to the side, forming a... To enhance visibility, the extended air outlet 4 is sealed with a transparent sealing strip, and a through hole matching the air outlet 41 is made on the transparent sealing strip. This allows the user to intuitively feel the exhaust effect. When the wearer walks and steps down, the air chamber 2 is compressed under the action of body weight. Due to the single or double one-way nature of the one-way valve 1 and the Tesla valve, the elastic channel 1 is in a closed state, making it difficult for airflow to enter the air intake 3 through the air inlet 31. Therefore, the airflow passes through the air outlet 4, and the elastic channel 1 opens under the action of fluid pressure. The fluid is discharged through the air outlet 13 and blown out from the air outlet 41. When the fluid pressure disappears, the elastic channel 1 closes under the action of elasticity, preventing fluid backflow. The airflow blown out from the vent 41 is discharged outside the shoe. Correspondingly, when the foot is lifted, the air chamber 2 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 vent 4. Therefore, the hot and humid air inside the shoe is drawn into the air chamber 2 through the vent 31 and the vent 3. When the raised foot touches the ground again, it squeezes the air chamber 2 again. The hot and humid air inside the air chamber 2 is blown out through the vent 41 through the vent 4. The hot and humid air blown out from the vent 41 is discharged outside the shoe. This cycle is repeated to achieve one-way exhaust and discharge the hot and humid air inside the shoe.

[0044] The one-way valve of this utility model is integrally molded from elastic material, without any moving parts. This avoids the failure problems caused by wear and jamming of valve discs, springs and other components in traditional one-way valves, thus improving the stability and service life of the product. The elastic channel opens under the action of fluid pressure and closes quickly under the action of elastic force when the fluid pressure disappears, which can accurately control the one-way flow of fluid. The surrounding edges set on the upper and lower sides of the outlet end are connected to the elastic channel, for example, they can be integrally molded with the elastic channel, which simplifies the production process. They do not come into contact with the outlet end, which can effectively prevent the outlet end surface from being accidentally stuck and in a normally open state, thus ensuring the reliability of the one-way conduction function of the one-way valve. This invention features a one-way ventilation sole with an air chamber and air passage on the sole. A one-way valve is located on the air passage, allowing the shoe to repeatedly inhale and exhale air during the wearer's daily walking, creating airflow circulation within the shoe. This improves airflow inside the shoe, effectively expelling heat and sweat, keeping the inside dry and cool, enhancing breathability and improving comfort. The elastic channel of the one-way valve closes quickly when the fluid pressure disappears, preventing external water and air from opening and entering the shoe, thus enhancing its waterproof performance. It is suitable for various weather conditions and environments, especially providing better waterproof protection in rainy weather or when walking in water.

[0045] 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 one-way valve, characterized in that: The one-way valve is made of elastic material and has an elastic channel. The rear end of the elastic channel has a flat opening to form an air outlet. The upper and lower sides of the air outlet are provided with rims to prevent the air outlet from being exposed. The rims are connected to the elastic channel but do not contact the air outlet. When fluid pressure is applied to the elastic channel, the elastic channel opens under the action of fluid pressure, and the fluid is discharged through the air outlet. When the fluid pressure disappears, the elastic channel closes under the action of elasticity to prevent fluid backflow.

2. The one-way valve according to claim 1, characterized in that: One end of the elastic channel is an air inlet, and the other end is an air outlet. The elastic channel has an inclined surface or a curved surface, and the inclination of the inclined surface or the curvature of the curved surface gradually decreases from the air inlet end to the air outlet end.

3. The one-way valve according to claim 1, characterized in that: The surrounding edge and the elastic channel are integrally formed.

4. A one-way ventilation sole, characterized in that: The sole is provided with an exhaust structure and a one-way valve as described in any one of claims 1 to 3. The exhaust structure includes an air chamber and an air passage communicating with the air chamber. One end of the air passage is connected to the inside of the shoe, and the other end is connected to the outside of the shoe. The one-way valve is disposed on the air passage and is in the same direction as the airflow of the air passage.

5. The unidirectional ventilation sole according to claim 4, characterized in that: The air chamber is positioned at the corresponding heel position.

6. The unidirectional ventilation sole according to claim 4, characterized in that: The air passage includes an air inlet and an air outlet. The end of the air inlet facing away from the air chamber forms an air inlet hole that communicates with the air inside the shoe, and the end of the air outlet facing away from the air chamber forms an air outlet hole that communicates with the outside of the shoe.

7. The unidirectional ventilation sole according to claim 5, characterized in that: The one-way valve is installed on the air intake duct to allow airflow to enter the air chamber in one direction from the air intake hole.

8. The unidirectional ventilation sole according to claim 7, characterized in that: The air intake is a Tesla valve structure, and the direction from the air intake port to the air chamber is a low-resistance direction.

9. The unidirectional ventilation sole according to claim 5 or 7, characterized in that: The one-way valve is installed on the air outlet to allow airflow to be discharged unidirectionally from the air chamber to the air outlet.

10. The unidirectional ventilation sole according to claim 9, characterized in that: The air outlet is a Tesla valve structure, and the direction from the air outlet to the air chamber is a high-resistance direction.

11. The unidirectional ventilation sole according to claim 4, characterized in that: The upper and / or lower surfaces of the sole are recessed inward to form air chamber grooves and air passage grooves. When a bonding piece is tightly bonded to the upper and / or lower surfaces of the sole, it forms air chambers and air passages with the air chamber grooves and air passage grooves.

12. The unidirectional ventilation sole according to claim 4, characterized in that: The sole includes a midsole and an outsole. The lower surface of the midsole is recessed inward to form an air chamber groove and an air channel groove. When the upper surface of the outsole is sealed and bonded to the lower surface of the midsole, it forms an air chamber and an air channel with the air chamber groove and the air channel groove.

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