A sole driven by gait to actively exhaust

Abstract

The utility model discloses a sole of active exhaust driven by gait, including the upper layer of insole with the flow guide groove, the bottom layer of insole with the exhaust groove and check valve, and with the insole sealed connection big bottom. The wearer walks or runs in the process, and the heel is grounded to make the air storehouse of insole rear part produce deformation and form negative pressure, inhale the air in the shoe and pass through double check valve structure one -way discharge. Without external power supply, the structure light weight, promotes the ventilation efficiency and the wearing comfort in the shoe, is applicable to the scene such as sports shoes, work shoes.

Description

Technical Field

[0001] This utility model belongs to the field of shoe sole technology, and in particular relates to a shoe sole that utilizes gait-driven active air exhaust. Background Technology

[0002] Shoes are functional clothing items worn on the feet. Their core function is to protect the feet from external environmental damage (such as friction, impact, temperature changes, and sharp objects). Simultaneously, through structural design (such as sole support and upper wrapping), they assist in balance and power generation during walking and exercise, combining practicality and aesthetics. The feet are one of the most frequent areas of the body to sweat, with approximately 250,000 sweat glands on each foot, capable of releasing about 0.5–1 ml of sweat per hour during exercise. If the air inside the shoe is not well-ventilated, moisture accumulates, not only causing stuffiness and odor but also easily breeding bacteria and triggering foot diseases.

[0003] Traditional ventilation methods mainly rely on mesh fabric in the shoe upper or perforations in the insole to achieve gas exchange through natural diffusion. However, the ventilation efficiency is limited in enclosed spaces or during prolonged exercise, making it difficult to achieve rapid moisture wicking and active ventilation. Existing ventilation systems on the market mostly rely on active components such as micro-pumps and fans, which not only increases cost and complexity but also adds to the thickness or weight of the sole and makes maintenance difficult.

[0004] To solve the above problems, there is an urgent need for a sole system that is simple in structure, requires no additional power source, and can achieve efficient air ventilation during daily gait. Utility Model Content

[0005] This invention discloses a shoe sole that utilizes gait-driven active air exhaust. The structure incorporates a guide channel and ventilation holes in the forefoot, combined with an air chamber and dual check valve mechanism at the heel. It leverages the negative pressure created by the wearer's gait to actively expel hot and humid air from inside the shoe. Requiring no electricity, it effectively improves ventilation and comfort, making it suitable for prolonged wear in athletic shoes, work shoes, and other similar applications. The design is simple, functionally stable, and offers advantages such as efficient air exhaust and ease of mass production.

[0006] To achieve the aforementioned objective, this utility model provides a shoe sole that utilizes gait-driven active air exhaust, comprising a midsole. The upper surface of the midsole is provided with a flow-guiding structure, and the bottom surface of the midsole is provided with an exhaust structure. The exhaust structure includes an exhaust groove formed on the lower surface of the midsole, and an airflow control mechanism disposed within the exhaust groove. The airflow control mechanism is used to realize unidirectional airflow guidance and active exhaust functions, wherein: The midsole also has several ventilation holes at the forefoot area, and the exhaust structure and the airflow structure are connected through the ventilation holes.

[0007] Preferably, it also includes an outsole, which is located below the midsole and fixedly connected to it. The exhaust structure of the midsole forms an exhaust channel through a sealed connection with the outsole. The upper surface of the midsole is also provided with an air-guiding liner, which covers the air-guiding groove to cooperate with the air-guiding structure to form an air-guiding channel. The gas flows into the ventilation holes through the air-guiding channel, enters the air chamber through the exhaust channel, and is finally discharged outside the sole. The outsole and the midsole are sealed together to form independent air-guiding channels and exhaust channels to prevent air leakage and ensure that the air flows according to the designed path.

[0008] Preferably, the airflow structure includes several airflow channels located at the forefoot of the midsole surface, the ventilation holes are located at the bottom of the airflow channels, and the midsole is made of high-elastic ETPU in one piece.

[0009] Preferably, the airflow control mechanism includes at least two check valves connected to the exhaust trough, and an air chamber for drawing in gas from the exhaust trough is provided between the two check valves. The air chamber includes an inlet end and an outlet end.

[0010] Preferably, the bottom of the midsole is further provided with two fixing grooves that communicate with the venting groove. The fixing groove includes a first fixing groove and a second fixing groove. A first check valve is horizontally installed in the first fixing groove, and a second check valve is horizontally installed in the second fixing groove. The depth of the fixing groove is greater than the height of the check valve.

[0011] Preferably, a first mounting groove is provided on the outer bottom of the air chamber, and a first sealing sheet is provided in the first mounting groove, the depth of the first mounting groove being adapted to the thickness of the first sealing sheet.

[0012] Preferably, at least a portion of the surface of the exhaust structure is covered with a first sealing sheet, which is sandwiched between the midsole and the outsole.

[0013] Preferably, a first mounting groove is provided on the outer side of the exhaust groove, and a first sealing sheet is provided in the first mounting groove, the depth of the first mounting groove being adapted to the thickness of the first sealing sheet.

[0014] Preferably, the guide channel includes a plurality of first guide channels spaced apart from the toe towards the heel, and a second guide channel that passes through the first guide channels sequentially along the length of the sole.

[0015] Preferably, the number of the first guide grooves is three, four, or five, and the number of the vent holes is two, four, or six.

[0016] Preferably, the check valve includes a first check valve and a second check valve. The inlet end of the first check valve is connected to the exhaust channel, the inlet end of the second check valve is connected to the gas chamber, the outlet end of the first check valve is connected to the gas chamber, and the outlet end of the second check valve is connected to the exhaust port. The check valve is used to restrict the unidirectional flow of gas.

[0017] Preferably, both the first and second guide channels have expansion holes at their ends, and the number of expansion holes is 11. The first check valve is located at the air inlet of the gas chamber, the second check valve is located at the air outlet of the gas chamber, the bottom of the guide channel has a vent hole, and the end has an expansion hole to enhance the gas gathering capacity.

[0018] Preferably, the extension trajectory of the exhaust groove is S-shaped, consisting of continuous reverse bending sections, forming an S-shaped profile that bends back and forth along the length direction. An outward expansion hole is opened at the position corresponding to the vent hole in the exhaust groove. The bottom end of the outward expansion hole is connected to the vent hole, and the diameter of the outward expansion hole gradually increases from bottom to top. The S-shaped path is guided by a continuous curve, which can make the gas flow more stable and reduce turbulence loss. At the same time, the curve turning point can utilize the fluid dynamics effect, combined with the gradual diameter of the outward expansion hole, to further enhance the airflow acceleration effect and improve the transmission efficiency of gas from the vent hole to the check valve.

[0019] Preferably, an exhaust shoe is also provided, wherein the sole utilizes gait-driven active exhaust.

[0020] The technical solution provided by this utility model has at least the following technical effects: The forefoot airflow channel of this application can comprehensively collect air inside the shoe (especially in the forefoot area where sweat is easily produced), and the expansion holes can enhance the air collection efficiency. Utilizing the gravity during walking / running, the air chamber deforms to generate negative pressure, actively drawing air inside the shoe into the exhaust channel through the ventilation holes, and then directionally expelling it through two check valves. No additional power is required; the air chamber is driven by the gravity deformation of the heel during gait to create negative pressure, thereby drawing in and expelling air from the shoe, improving exhaust efficiency. The air chamber and airflow structure are integrated inside the sole, without increasing the overall thickness or weight, making it suitable for everyday walking and sports shoe scenarios. It also ensures unidirectional airflow through two check valves, preventing moisture or dust from flowing back in. The forefoot airflow channel comprehensively collects hot and humid air, the expansion holes improve gas collection efficiency, and the S-shaped exhaust channel and outward expansion holes improve the exhaust rate. This structure is suitable for high-frequency usage scenarios such as sports shoes, work shoes, kitchen shoes, and medical shoes, and is especially suitable for soles worn for long periods of standing or in high-humidity environments.

[0021] This invention utilizes an air chamber structure in conjunction with a check valve to construct an air exhaust system that requires no external energy and is driven by gait, making it more practical. It can also remove moisture through exhaust, thus possessing a certain degree of indirect moisture-wicking capability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the middle base according to Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the midsole structure from another angle according to Embodiment 1 of this utility model; Figure 3A This is a bottom view of the middle base according to Embodiment 1 of this utility model; Figure 3B This is a bottom view of the middle base according to a modified embodiment of the present invention; Figure 3C This is a bottom view of the middle base according to another variation of Embodiment 1 of the present invention; Figure 3D This is a bottom view of the middle base according to yet another variation of Embodiment 1 of the present utility model; Figure 4 This is a schematic diagram of the sole structure according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the airflow channel in the sole of a shoe according to Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the gait-driven exhaust path of the shoe sole according to Embodiment 1 of this utility model. Figure 7 This is a schematic diagram of the check valve according to Embodiment 1 of this utility model; Figure 8 This is a structural schematic diagram of a sports shoe according to Embodiment 1 of the present invention; Key reference numerals: 10. Air duct liner; 20. Midsole; 21. Airflow structure; 211. First airflow channel; 212. Second airflow channel; 22. Exhaust structure; 221. Outward expansion hole; 23. Vent hole; 24. First check valve; 25. Air chamber; 26. First mounting groove; 27. Second check valve; 28. Second mounting groove; 29. ​​First sealing plate; 30. Outsole; 40. Upper; Detailed Implementation The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Implementation Method 1: Please refer to Figure 1 , Figure 2 , Figure 3A as well as Figure 4 , Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Figure 2 This is a top view of the midsole 20 according to an embodiment of the present invention. Figure 3A This is a bottom view of the middle bottom 20 according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the disassembled structure of the shoe sole according to an embodiment of the present utility model.

[0027] This utility model embodiment provides a shoe sole with active air exhaust driven by gait, including a midsole 20. The upper surface of the midsole 20 is provided with a flow guiding structure 21, and the bottom surface of the midsole 20 is provided with an exhaust structure 22. The exhaust structure 22 includes an exhaust groove formed on the bottom surface of the midsole 20, and an airflow control mechanism disposed within the exhaust groove. The airflow control mechanism is used to realize unidirectional airflow guidance and active air exhaust functions, wherein: The exhaust structure 22 and the flow guiding structure 21 are connected through the vent 23. It also includes a large outsole 30, which is fixedly set at the bottom of the midsole 20. The midsole 20 and the large outsole 30 are sealed together to form a flow guiding channel and an exhaust channel. Gas flows to the exhaust channel through the flow guiding channel. The airflow guiding structure 21 includes several airflow guiding channels disposed on the forefoot surface of the midsole 20, with the ventilation holes 23 located at the bottom of the airflow guiding channels. In this embodiment, the airflow guiding channels include five first airflow guiding channels 211 spaced apart from the toe towards the heel, and second airflow guiding channels 212 sequentially penetrating the first airflow guiding channels 211 from the toe to the heel. Both the first airflow guiding channels 211 and the second airflow guiding channels 212 have expansion holes at their ends. In this embodiment, there are 11 expansion holes and 5 first airflow guiding channels 211.

[0028] The forefoot airflow channels (five first airflow channels 211 + a through second airflow channel 212) can comprehensively collect air inside the shoe (especially in the forefoot area where sweat is easily produced), and the expansion holes can enhance the air collection efficiency; the upper surface of the midsole 20 is also provided with an air-guiding liner 10. In this embodiment, the midsole 20 is made of ETPU foam in one piece.

[0029] The airflow control mechanism includes two check valves connected to the exhaust channel, and an air chamber 25 for creating a negative pressure environment within the exhaust channel is provided between the two check valves. In this embodiment, a first mounting groove 26 is provided on the outer side of the bottom of the air chamber 25, and a first sealing plate is provided in the first mounting groove 26. During shoe sole assembly, the first sealing plate is sandwiched between the midsole 20 and the outsole 30, thereby ensuring the airtightness of the air chamber 25 through further sealing by the first sealing plate.

[0030] Both the first check valve 24 and the second check valve 27 are installed in the slots opened at the bottom of the midsole 20. The midsole 20 has a second mounting groove 28 at the outlet of the second check valve 27. The second mounting groove 28 is equipped with a second sealing plate, which further enhances the sealing of the airflow channel by sealing connection with the outsole 30.

[0031] Please refer to the following: Figures 5-7 , Figure 5 This is a schematic diagram of the gas flow channel according to an embodiment of the present invention. The arrows in the diagram indicate the direction of gas flow. Figure 6 This is a schematic diagram of the gait-driven exhaust path of the shoe sole according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the check valve according to an embodiment of the present utility model. The left side is a side view of the check valve, and the right side is a front view of the check valve.

[0032] The check valve includes an inlet and an outlet. The air chamber 25 is located at the heel. The inlet of the first check valve 24 is connected to the exhaust channel, and the inlet of the second check valve 27 is connected to the air chamber 25. The outlet of the first check valve 24 is connected to the air chamber 25, and the outlet of the second check valve 27 is connected to the exhaust port. The check valve is used to restrict the unidirectional flow of gas. The outlet of the second check valve 27 is provided with an exhaust port. Gas flows through the exhaust channel to the first check valve 24, then through the air chamber 25 to the second check valve 27, and exits the sole of the shoe through the exhaust port.

[0033] This embodiment utilizes the gravity of the heel striking the ground during walking / running to deform the air chamber 25 and generate negative pressure. It actively draws air from inside the shoe into the exhaust channel through the ventilation holes 23, and then discharges it in a directional manner through two check valves. No additional power is required, making it perfectly suited for sports scenarios. The exhaust efficiency is far higher than that of passive ventilation (such as simple mesh uppers).

[0034] In this embodiment, during the production and assembly process, the midsole 20 with the flow guiding structure 21 and the exhaust structure 22 is first obtained by integral molding. Then, a one-way valve is installed on the midsole 20. The first sealing plate and the second sealing plate are then installed in the corresponding mounting grooves. The air guiding surface liner 10, the midsole 20 and the outsole 30 are then assembled in sequence from top to bottom to obtain the exhaust shoe sole of this application.

[0035] This implementation method reduces production difficulty and improves consistency through modular assembly: each core component (flow guide structure 21, exhaust channel, check valve, air chamber 25) adopts a corresponding assembly logic: The check valve is precisely aligned with the connection points of the exhaust duct and the air chamber 25 to prevent airflow blockage caused by misalignment; The vent 23 corresponds to the outer expansion hole 221 of the exhaust groove, ensuring a smooth transition of air from the guide groove to the exhaust groove; This modular assembly facilitates standardized production, reduces assembly errors, and ensures consistent ventilation performance for each pair of shoe soles.

[0036] The assembly method in this embodiment prioritizes functionality. It ensures efficient ventilation through sealed connections, simplifies production through modular design, ensures functional stability through precise positioning, and balances strength and lightweight by integrating molding and partial assembly. Ultimately, it achieves the comprehensive advantages of "efficient ventilation, controllable production, and durable use," providing reliable structural support for the core functions of the sole (active ventilation and comfortable wear).

[0037] The exhaust groove is S-shaped, and an outward expansion hole 221 is opened at the position corresponding to the vent hole 23. The bottom end of the outward expansion hole 221 is connected to the vent hole 23, and the diameter of the outward expansion hole 221 gradually increases from bottom to top.

[0038] The one-way flow characteristic of the two check valves prevents the exhausted air from flowing back into the shoe, while the negative pressure environment of the air chamber 25 can continuously form a directional airflow of "inhale-exhale", ensuring a stable exhaust process and preventing airflow disturbances even when changing gait (such as when the heel leaves the ground).

[0039] The outsole 30 and midsole 20 are sealed together to form independent airflow and exhaust channels, preventing airflow leakage and ensuring that air flows along the designed path. The air chamber 25 is located at the heel, and the exhaust is driven by the impact force of the heel hitting the ground; The overall structure is lightweight, without adding extra thickness or weight to the sole, making it suitable for high-frequency activities such as daily walking and running.

[0040] Please refer to the following: Figure 3B , Figure 3B As a variation of Embodiment 1 of this utility model, in this embodiment, the air chamber of the midsole forms a closed structure through a sealed connection between the midsole and the outsole.

[0041] Please refer to the following: Figure 3C , Figure 3C In another variation of Embodiment 1 of the present invention, in this embodiment, the first mounting groove 26 is located outside the exhaust groove, and a first sealing sheet 29 is installed in the first mounting groove. The thickness of the first sealing sheet 29 is equal to the depth of the first mounting groove 26. In this embodiment, the airtightness of the exhaust groove is further ensured by covering the surface of the exhaust groove with the first sealing sheet 29.

[0042] Please refer to the following: Figure 3D In this embodiment, a first sealing sheet 29 is laid on the surface of the venting structure at the bottom of the midsole. The first sealing sheet 29 is embedded in the first mounting groove 26. The thickness of the first sealing sheet 29 is equal to the depth of the first mounting groove 26. The first sealing sheet 29 is sandwiched between the midsole and the outsole during the assembly of the shoe sole, thereby ensuring the airtightness of the venting structure.

[0043] Implementation Method Two: Please refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of an embodiment.

[0044] This embodiment provides a sports shoe with a ventilated sole, the sports shoe including an upper 40 and a sole.

[0045] When a user walks or runs while wearing the shoes of this application, the user's weight causes the air chamber 25 to deform when the heel hits the ground, thereby generating negative pressure. This causes the air inside the shoe to be drawn into the exhaust groove through the ventilation hole 23 via the flow guide structure 21, and then through two check valves in sequence, finally expelling the air inside the shoe.

[0046] This embodiment is suitable for running shoes, work shoes, chef's shoes, nurse's shoes, and other positions that require prolonged standing.

[0047] This embodiment can continuously expel moisture and heat from inside the shoe, reducing the stuffiness of the feet and lowering the risk of odor and bacterial growth caused by dampness, thereby providing a shoe with heat dissipation function that allows the wearer to feel comfortable continuously.

[0048] The integrated design of the drainage channel with the sole surface does not affect the fit of the foot and avoids foot discomfort caused by structural protrusions.

[0049] The design of the check valve and air chamber 25 ensures unidirectional airflow, preventing external impurities such as dust and water from flowing back into the shoe. The sealed connection between the outsole 30 and the midsole 20 enhances structural stability, maintaining channel sealing even under long-term motion deformation and extending service life.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shoe sole that utilizes gait-driven active air exhaust, comprising a midsole (20), characterized in that: The upper surface of the midsole (20) is provided with a flow guiding structure (21), and the bottom surface of the midsole (20) is provided with an exhaust structure (22). The exhaust structure (22) includes an exhaust groove opened on the bottom surface of the midsole (20) and an airflow control mechanism disposed in the exhaust groove. The airflow control mechanism is used to realize unidirectional airflow guidance and active exhaust functions, wherein: The midsole (20) also has several ventilation holes (23) at the forefoot. The exhaust structure (22) and the flow guiding structure (21) are connected through the ventilation holes (23). The midsole (20) also includes an outsole (30), which is located below the midsole (20) and fixedly connected to it. The exhaust structure (22) of the midsole (20) forms an exhaust channel by sealing it with the outsole (30). The upper surface of the midsole (20) is also provided with an air guiding liner (10), which covers the flow guiding groove to cooperate with the flow guiding structure (21). A flow channel is formed, through which gas flows into the ventilation hole (23), through the exhaust channel into the air chamber (25), and finally out of the sole. The flow structure (21) includes several flow channels set on the forefoot of the midsole (20). The ventilation hole (23) is located at the bottom of the flow channel. The midsole is made of high-elastic ETPU in one piece. The airflow control mechanism includes at least two check valves connected to the exhaust channel. An air chamber (25) for drawing in gas from the exhaust channel is also provided between the two check valves. The air chamber (25) includes an air inlet and an air outlet.

2. The shoe sole utilizing gait-driven active air exhaust according to claim 1, characterized in that: The bottom of the midsole (20) is also provided with two fixing grooves that are connected to the exhaust groove. The fixing grooves include a first fixing groove and a second fixing groove. A first check valve (24) is horizontally installed in the first fixing groove, and a second check valve (27) is horizontally installed in the second fixing groove. The depth of the fixing groove is greater than the height of the check valve.

3. The shoe sole utilizing gait-driven active air exhaust according to claim 2, characterized in that: The bottom outer side of the air chamber is provided with a first mounting groove (26), and a first sealing plate (29) is provided in the first mounting groove (26). The depth of the first mounting groove (26) is adapted to the thickness of the first sealing plate (29).

4. The shoe sole utilizing gait-driven active air exhaust according to claim 3, characterized in that: At least a portion of the surface of the exhaust structure is covered with a first sealing sheet (29), which is sandwiched between the midsole (20) and the outsole (30).

5. The shoe sole utilizing gait-driven active air exhaust according to claim 4, characterized in that: The outer side of the exhaust groove is provided with a first mounting groove (26), and a first sealing plate (29) is provided in the first mounting groove (26). The depth of the first mounting groove (26) is adapted to the thickness of the first sealing plate (29).

6. The shoe sole utilizing gait-driven active air exhaust according to claim 1, characterized in that: The guide channel includes a plurality of first guide channels (211) spaced apart from the toe to the heel, and a second guide channel (212) that runs through the first guide channels (211) sequentially along the length of the sole.

7. The shoe sole utilizing gait-driven active air exhaust according to claim 6, characterized in that: The number of the first guide grooves (211) is three, four or five, and the number of the vent holes (23) is two, four or six.

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