A one-way valve, a breathing mechanism, a breathing insole and a sole of a shoe

Abstract

The application discloses an active closed one-way valve, a gas exchange mechanism, a gas exchange insole and a shoe sole, and relates to the technical field of shoe structure. The active closed one-way valve comprises a valve body, an end plate arranged at the exhaust end of the valve body, and an elastic cap covering the end plate. A convex part is arranged on the outer end surface of the end plate, and air holes are distributed around the convex part. An exhaust hole corresponding to the position of the convex part is arranged on the elastic cap. The elastic cap is pressed against the convex part and blocks the exhaust hole by the convex part. The elastic cap can be deformed outward to move away from the convex part under the pressure of the outward exhaust gas flow of the one-way valve, so as to open the exhaust hole. The application has the advantages of simple structure, easy implementation, low failure rate and better durability. Moreover, the elastic cap is pressed against the convex part and fixed around the convex part. The gas flow in the valve body needs to accumulate to a certain pressure to break the elastic cap and flow out from the exhaust hole. In this way, the gas flow can be accumulated and pressurized in the valve body, so that the finally sprayed gas flow of the one-way valve is more concentrated, and the flow rate is faster.

Description

Technical Field

[0001] This invention relates to the field of footwear structure technology, and in particular to an actively closing one-way valve, a ventilation mechanism, a ventilation insole, and a sole. Background Technology

[0002] Chinese patent document CN 214759491 U discloses a breathable insole and breathable shoe, which achieves the one-way exhaust function of the exhaust valve by setting a second elastic diaphragm. Since the second elastic diaphragm is fixed at only one end and relies on its own weight to cover the exhaust port, and the second elastic diaphragm is relatively light, only a small amount of air pressure is needed to achieve a large opening of the exhaust port. Therefore, basically, just stepping on the airbag will push open the second elastic diaphragm, causing the airbag to continuously exhaust air during the compression process. However, since the airbag volume remains unchanged, the exhaust time is longer, resulting in a small amount of air exhausted per unit time. Ultimately, this leads to a small amount of air blown out through the vents and a lack of concentration, so the user's feet can only feel a weak breeze, and the actual user experience needs improvement. Summary of the Invention

[0003] The purpose of this invention is to provide an actively closing one-way valve to improve the problems of small exhaust volume and insufficient concentration in existing exhaust one-way valves.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an actively closing one-way valve, comprising a hollow valve body, wherein the exhaust end of the valve body is provided with an end plate and an elastic cap covering the end plate, the outer end face of the end plate is provided with a protrusion, and vent holes are distributed around the protrusion. The elastic cap is provided with an exhaust hole corresponding to the position of the protrusion, the elastic cap is pressed against the protrusion and the protrusion blocks the exhaust hole, and the elastic cap can deform outward and move away from the protrusion under the pressure of the airflow discharged outward by the one-way valve, thereby opening the exhaust hole.

[0005] Preferably, the protrusion gradually thickens from front to back, with the diameter of the thicker end being greater than the inner diameter of the exhaust hole, and the diameter of the thinner end being smaller than the inner diameter of the exhaust hole.

[0006] Preferably, the protrusion is hemispherical or conical in shape.

[0007] Preferably, a gap is left between the outer end face of the end plate and the inner end face of the elastic cap.

[0008] Preferably, an exhaust pipe is connected to the outer end of the exhaust port.

[0009] In one embodiment of the present invention, a ventilation mechanism is also provided, which includes a compressible air bladder, the air bladder being provided with an air inlet pipe and an air outlet pipe, the air inlet pipe being provided with a one-way air inlet valve, and the air outlet pipe being provided with the aforementioned actively closing one-way valve.

[0010] In another embodiment of the present invention, a ventilated insole is also provided, which includes the above-mentioned ventilation mechanism, wherein the ventilation mechanism is disposed inside the insole, and the air inlet pipe and the air outlet pipe are both connected to the outside of the insole but are staggered.

[0011] In another embodiment of the present invention, a ventilated shoe sole is also provided, which includes the above-mentioned ventilation mechanism, wherein the ventilation mechanism is disposed inside the shoe sole, and the air inlet pipe and the air outlet pipe are both connected to the outside of the shoe sole and are staggered.

[0012] Preferably, the airbag includes an upper airbag body and a bottom cover. The bottom rear end of the sole has a concave portion. The airbag is installed in the concave portion, and the upper airbag body is shaped similarly to the concave portion and is integrated with it. The bottom cover includes a bottom wall and a U-shaped side wall. The U-shaped side wall has an inwardly protruding limiting portion at a position slightly below its top. The length of the bottom wall is greater than the length of the concave portion. The upper airbag body, the U-shaped side wall, and the bottom wall are interconnected and surround each other to form the inner cavity of the airbag. The limiting portion abuts against the upper wall of the concave portion. The bottom wall and the U-shaped side wall are both fixedly connected to the outer wall of the sole.

[0013] Preferably, the upper surface of the sole has an air outlet slot located away from the air bladder, and the air outlet pipe is connected to the air outlet slot through an air delivery channel in the sole.

[0014] Under normal conditions, the elastic cap is pressed tightly against the protrusion, and the vent is closed, preventing air from entering. During venting, the airflow from the rear end of the valve body towards the vent flows through the vent hole to the elastic cap, compressing the inner end face of the elastic cap and causing it to deform outward and move away from the protrusion, thereby opening the vent and releasing the gas, achieving a one-way ventilation function. This invention has a simple structure, is easy to implement, has a low failure rate, and is more durable. It is worth mentioning that because the elastic cap exerts a pressing force on the protrusion and is fixed around its perimeter, the airflow inside the valve body needs to accumulate to a certain pressure before it can force open the elastic cap and flow out through the vent. This allows the airflow to accumulate and store pressure within the valve body, making the final airflow from the one-way valve more concentrated and faster. Attached Figure Description

[0015] Figure 1 A 3D view of a check valve that closes automatically;

[0016] Figure 2 A cross-sectional view of an actively closing check valve;

[0017] Figure 3 This is a three-dimensional view of the valve body;

[0018] Figure 4 A 3D diagram of an elastic cap;

[0019] Figure 5 A 3D model of the shoe sole;

[0020] Figure 6 This is a sectional view of the shoe sole;

[0021] Figure 7 This is a schematic diagram of the shoe sole structure;

[0022] Figure 8 For the three-dimensional bottom cover Figure 1 ;

[0023] Figure 9 For the three-dimensional bottom cover Figure 2 ;

[0024] Figure 10 A 3D diagram of the insole;

[0025] Figure 11 This is a schematic diagram of the lower pad structure.

[0026] In the picture:

[0027] 1—Valve body; 2—End plate; 2a—Protrusion.

[0028] 2b – Vent hole; 3 – Elastic cap; 3a – Exhaust hole

[0029] 3b - Exhaust pipe; 4 - Airbag; 5 - Intake pipe

[0030] 6 - Air outlet pipe 7 - One-way air inlet valve 8 - Insole

[0031] 9 - Shoe sole 10 - Upper bladder 11 - Shoe cover

[0032] 11a – Bottom wall; 11b – U-shaped side wall; 11c – Limiting part

[0033] 12 – Recessed portion; 13 – Air outlet slot; 14 – Air delivery channel

[0034] 15 - Vent hole; 16 - Connecting channel; 17 - Upper pad

[0035] 18 - Lower pad; 19 - Return spring; 20 - Elastic frame. Detailed Implementation

[0036] In the description of this invention, it should be understood that the terms "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. The term "a plurality of" means two or more (including two).

[0037] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention; please refer to the accompanying drawings. Figures 1-11 .

[0038] Example 1

[0039] like Figures 1-4 As shown, this embodiment provides an actively closing one-way valve, which includes a hollow valve body 1. The exhaust end of the valve body 1 is provided with an end plate 2 and an elastic cap 3 covering the end plate 2. The outer end face of the end plate 2 is provided with a protrusion 2a. Vent holes 2b are distributed around the protrusion 2a. The elastic cap 3 is provided with an exhaust hole 3a corresponding to the position of the protrusion 2a. The elastic cap 3 is pressed against the protrusion 2a and blocks the exhaust hole 3a through the protrusion 2a. The elastic cap 3 can deform outward and move away from the protrusion 2a under the pressure of the airflow discharged outward by the one-way valve, thereby opening the exhaust hole 3a.

[0040] Under normal conditions, the elastic cap 3 is pressed against the protrusion 2a, and the vent 3a is closed, preventing air from entering. During venting, the airflow from the rear end of the valve body 1 towards the vent 3a flows through the vent 2b to the elastic cap 3, compressing the inner end face of the elastic cap 3 and causing it to deform outward and move away from the protrusion 2a, thereby opening the vent 3a and releasing the gas, achieving a one-way ventilation function. The above-mentioned one-way valve has a simple structure, is easy to implement, has a low failure rate, and is more durable. It is worth mentioning that because the elastic cap 3 exerts a pressing force on the protrusion 2a and is fixed on all four sides, the airflow inside the valve body 1 needs to accumulate to a certain pressure before it can force open the elastic cap 3 and flow out of the vent 3a. This allows the airflow to accumulate and store pressure inside the valve body 1, making the final airflow from the one-way valve more concentrated and faster. Moreover, because the elastic cap 3 is fixed on all four sides, vibration is reduced during venting, thereby reducing noise.

[0041] It should be noted that the position of end plate 2 is fixed, and the protrusion 2a can be made of rigid material. The projection surface of exhaust hole 3a on end plate 2 does not overlap with vent hole 2b, which can prevent the exhaust hole 3a and vent hole 2b from communicating under normal conditions and reduce air leakage.

[0042] The area of ​​the exhaust port 3a can be less than half the area of ​​the end face of the elastic cap 3, so that the external airflow can better exert pressure on the outer end face of the elastic cap 3. At the same time, the amount of air entering the exhaust port 3a can be less than the amount of air distributed on the outer end face of the elastic cap 3, so that even if air enters the exhaust port 3a from outside the valve body 1, it cannot break open the elastic cap 3 and enter the one-way valve.

[0043] In this embodiment, the protrusion 2a gradually thickens from front to back, with the diameter of the thicker end being larger than the inner diameter of the exhaust hole 3a, and the diameter of the thinner end being smaller than the inner diameter of the exhaust hole 3a. The protrusion 2a can be hemispherical or conical. Normally, the inner edge of the exhaust hole 3a is pressed against the protrusion 2a. When exhaust is required, the internal airflow compresses the inner end face of the elastic cap 3, causing it to deform outwards and move away from the protrusion 2a. Simultaneously, the gradually sloping surface of the protrusion 2a acts as a guide, directing the airflow towards the connection between the elastic cap 3 and the protrusion 2a, thus making it easier to overcome obstacles and exhaust outwards, thereby improving exhaust efficiency. On the other hand, when the external airflow is squeezed against the elastic cap 3, the gradually inclined surface on the protrusion 2a abuts against the inner edge of the exhaust hole 3a. Therefore, under the pressure of the external airflow, the inner end face of the elastic cap 3 also gradually presses against the surface of the protrusion 2a, and still cannot open the exhaust hole 3a to allow the external airflow to flow into the valve body 1, so as to achieve the purpose of improving the one-way ventilation effect.

[0044] In this embodiment, a gap is left between the outer end face of the end plate 2 and the inner end face of the elastic cap 3. Compared to the airflow only compressing the inner end face of the elastic cap 3 through the vent hole 2b, leaving a gap between the outer end face of the end plate 2 and the inner end face of the elastic cap 3 where the vent hole 3a is provided allows the internal airflow to be evenly distributed between the inner end face of the elastic cap 3 and the outer end face of the end plate 2. This can compress the entire end face of the elastic cap 3, better pushing it to deform outward, resulting in a better venting effect.

[0045] In this embodiment, an exhaust pipe 3b is connected to the outer end of the exhaust port 3a. The exhaust pipe 3b can impede the external airflow to a certain extent, reducing the amount of air entering the exhaust port 3a from the outside, and preventing air from being squeezed into the valve body 1 from the connection between the elastic cap 3 and the protrusion 2a due to excessive air pressure. Moreover, the outer wall of the exhaust pipe 3b can be subjected to the pressure of the external airflow together with the outer end face of the elastic cap 3, making it more stably pressed against the protrusion 2a, resulting in a better sealing effect.

[0046] Example 2

[0047] like Figure 6 , 11 As shown, this embodiment provides a ventilation mechanism, which includes an airbag 4. The airbag 4 is a compressible and automatically recoverable flexible shell, which can be made of TPU material. The airbag 4 is provided with an inlet pipe 5 and an outlet pipe 6 connecting its inner cavity. A one-way inlet valve 7 is installed in the inlet pipe 5, and an actively closing one-way valve as described in Embodiment 1 is installed in the outlet pipe 6. This not only achieves a better ventilation effect, but also, due to the use of the actively closing one-way valve as described in Embodiment 1, allows the discharged gas to be more concentrated and the flow rate to be faster, resulting in a stronger blowing sensation and improved user experience.

[0048] Example 3

[0049] like Figures 5-9 As shown, this embodiment provides a breathable shoe sole, which includes the breathable mechanism in embodiment 2. The breathable mechanism is located inside the shoe sole 9, and the air inlet pipe 5 and the air outlet pipe 6 are both connected to the outside of the shoe sole 9 and are staggered.

[0050] The sole 9 includes a forefoot and a heel. The airbag 4 can be located at the bottom of the forefoot or the bottom of the heel, allowing it to be compressed when the forefoot or heel strikes the ground. In this embodiment, the airbag 4 is preferably located at the bottom of the heel. The air inlet pipe 5 of the airbag 4 connects the inner cavity of the airbag 4 with the external space on the side of the sole 9. The side of the sole 9 specifically includes multiple directions: front, back, left, and right. The air outlet pipe 6 connects the inner cavity of the airbag 4 with the space above the sole 9. This allows air to be blown upwards onto the sole 9 when the airbag 4 is compressed, and to be drawn in when the airbag 4 rebounds. The absorbed air can be gas blown out by the airbag 4 and remaining inside the shoe, or outside air entering the shoe through the gap between the shoe opening and the foot. Of course, the gas blown out by the airbag 4 can also escape from the shoe opening along the edge of the foot. Applying the above-mentioned sole 9 to the shoes can achieve air exchange inside the shoe, keep the inside of the shoe dry, eliminate the conditions for bacterial growth and reproduction, make the wearer feel ventilated and comfortable, and make the feet less susceptible to bacterial infection.

[0051] To ensure that the air blown from the air outlet 6 can better enter the shoe, air outlet slots 13 are provided on the upper surface of the forefoot area away from the air bladder 4, and an air delivery channel 14 is provided in the sole 9 to connect the air outlet slots 13 and the air outlet 6. The air outlet slots 13 also allow the blown air to directly dry the forefoot area, reducing dampness inside the shoe caused by foot sweat. The air outlet slots 13 can be multiple strip-shaped grooves spaced apart on the upper surface of the forefoot, and are interconnected. This allows the air from the air outlet 6 to enter the shoe more dispersedly through the strip-shaped grooves, keeping all areas inside the shoe as dry as possible.

[0052] In addition, such as Figures 5-9As shown, the airbag 4 is equipped with a return spring 19 to ensure better rebound and reset when no pressure is applied. Simultaneously, an elastic skeleton 23 with a three-dimensional mesh structure, made of interwoven air fibers, can be incorporated into the airbag 4. This provides better support to the inner wall of the airbag 4, preventing the return spring 19 from being suspended and causing localized stress. This ensures that the wearer does not experience a noticeable abruptness when pressing the airbag 4 (the localized discomfort caused by a stiff return spring 19). Furthermore, the airbag 4 can be made into an modular structure, making it easier to implement and simpler to manufacture. Specifically, the airbag 4 includes an upper airbag body 10 and a bottom cover 11. The bottom rear end of the sole 9 is provided with a concave portion 12. The airbag 4 is installed in the concave portion 12, and the upper airbag body 10 is similar in shape to the concave portion 12 and is connected as one piece. Alternatively, the upper wall of the concave portion 12 can be used directly as the upper airbag body 10. The bottom cover 11 includes a bottom wall 11a and a U-shaped side wall 11b. The U-shaped side wall 11b is provided with an inwardly protruding limiting portion 11c at a position slightly below its top. The length of the bottom wall 11a is greater than the length of the concave portion 12. The upper airbag body 10, the U-shaped side wall 11b, and the bottom wall 11a are connected to each other and surround to form the inner cavity of the airbag 4. The limiting portion 11c abuts against the upper wall of the concave portion 12. The bottom wall 11a and the U-shaped side wall 11b are both fixedly connected to the outer wall of the sole 9. They can be fixed together by adhesive. The limiting part 11c can form an L-shaped structure with the upper end of the U-shaped sidewall 11b, which supports the upper wall of the concave part 12. When the sole 9 is compressed downward by pressure, it can reduce the vertical relative sliding between the outer wall of the sole 9 and the U-shaped sidewall 11b, prevent the U-shaped sidewall 11b from falling off the sidewall of the sole 9, and thus improve its durability.

[0053] Example 4

[0054] like Figure 10 , 11 As shown, this embodiment provides a breathable insole, which includes the breathable mechanism of Embodiment 2. This breathable mechanism is located inside the insole 8, with the air inlet pipe 5 and the air outlet pipe 6 both connected to the outside of the insole 8 but staggered. It should be noted that the principle of the breathable mechanism being located in the insole 8 is the same as in Embodiment 3, and will not be repeated here.

[0055] In this embodiment, the replaceability of the insole 8 within the shoe makes it more widely applicable and adaptable. The upper surface of the insole 8 has an air vent 15, and the air vent 6 can be connected to the air vent 15 via a connecting channel 16 within the insole 8, allowing air to be blown upwards to the foot through the air vent 15. The air inlet 5 communicates with the rear of the insole 8 to draw in external air. The insole 8 may include an upper pad 17 and a lower pad 18 that fit together, with the ventilation mechanism sandwiched between the upper pad 17 and the lower pad 18.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the product form and style of the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of the present invention. As long as the content does not depart from the technical solution of the present invention, it shall fall within the patent scope of the technical solution of the present invention.

Claims

1. A positively closing check valve characterized by: The valve body (1) is provided with an end plate (2) and an elastic cap (3) covering the end plate (2), the outer end surface of the end plate (2) is provided with a protrusion (2a), the protrusion (2a) is surrounded by air holes (2b), the elastic cap (3) is provided with an exhaust hole (3a) corresponding to the position of the protrusion (2a), the elastic cap (3) is pressed on the protrusion (2a) and blocks the exhaust hole (3a) through the protrusion (2a), and the elastic cap (3) can be deformed outward to move away from the protrusion (2a) under the pressure of the outward flow of the one-way valve, thereby opening the exhaust hole (3a); The projection of the exhaust hole (3a) on the end plate (2) does not overlap with the air hole (2b); The area of the exhaust hole (3a) is less than half of the area of the end surface of the elastic cap (3); The outer side of the exhaust hole (3a) is connected with an exhaust pipe (3b).

2. The actively closed check valve of claim 1, wherein: The protrusion (2a) gradually thickens from front to back, and the diameter of the thicker end is greater than the inner diameter of the exhaust hole (3a), and the diameter of the thinner end is less than the inner diameter of the exhaust hole (3a).

3. The actively closed check valve of claim 2, wherein: The shape of the protrusion (2a) is hemispherical or conical.

4. The actively closed check valve of claim 1, wherein: The outer end surface of the end plate (2) and the inner end surface of the elastic cap (3) are left with a gap.

5. A ventilation mechanism, characterized by: The air bag (4) is provided with an air inlet pipe (5) and an air outlet pipe (6), the air inlet pipe (5) is provided with a one-way inlet valve (7), and the air outlet pipe (6) is provided with the actively closed one-way valve of any one of claims 1-4.

6. An air-permeable shoe insole, characterized by: The air exchange mechanism of claim 5 is arranged inside the insole (8), and the air inlet pipe (5) and the air outlet pipe (6) are both connected with the outside of the insole (8) and arranged staggered.

7. A vented shoe sole characterized by: The air exchange mechanism of claim 5 is arranged inside the insole (8), and the air inlet pipe (5) and the air outlet pipe (6) are both connected with the outside of the insole (8) and arranged staggered.

8. The vented shoe sole of claim 7, wherein: The air bag (4) includes an upper bag body (10) and a bottom cover (11), the bottom of the insole (9) is provided with an inner recess (12), the air bag (4) is installed in the inner recess (12) and the upper bag body (10) is equivalent to the shape of the inner recess (12) and is connected as a whole, the bottom cover (11) includes a bottom wall (11a) and a U-shaped side wall (11b), the U-shaped side wall (11b) is provided with an inward protruding limiting portion (11c) at a position deviated downward from the top end, the length of the bottom wall (11a) is greater than the length of the inner recess (12), the upper bag body (10), the U-shaped side wall (11b) and the bottom wall (11a) are connected with each other and surround to form the inner cavity of the air bag (4), and the limiting portion (11c) abuts against the upper wall of the inner recess (12), and the bottom wall (11a) and the U-shaped side wall (11b) are both fixedly connected with the outer wall of the insole (9).

9. The vented shoe sole of claim 7, wherein: The upper surface of the insole (9) is provided with an air outlet groove (13) at a position away from the air bag (4), and the air outlet pipe (6) is connected with the air outlet groove (13) through a gas conveying channel (14) arranged in the insole (9).

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