One-way valve, air pump and massage equipment

Abstract

The utility model discloses a one-way valve, an air pump and massage equipment, the one-way valve comprises an air inlet layer, an air outlet layer and a valve membrane structure which are arranged in sequence, air inlet holes are formed in the air inlet layer, air outlet holes are formed in the air outlet layer, and an activity space is formed between the valve membrane structure and the air outlet layer. The valve membrane structure comprises an interlayer part and a valve membrane part connected to the interlayer part, the valve membrane part can be attached to the air inlet layer to cover the air inlet hole, the moving space is used for providing a deformation space for the valve membrane part, an air channel is formed between the periphery of the valve membrane part and the interlayer part, the air channel communicates with the air outlet hole, and the air channel is configured to allow air to pass through when the valve membrane part deforms. The valve membrane part is configured to be capable of deforming towards the air outlet layer to expose the air inlet hole, so that the air inlet hole communicates with the air channel. The valve membrane part is further configured to be capable of being attached to the air inlet layer to cover the air inlet hole so as to block communication between the air inlet hole and the air channel. According to the one-way valve, the air pump and the massage equipment, the risk that the air sealing function of the one-way valve fails can be reduced.

Description

Technical Field

[0001] This application relates to the field of air pump technology, and in particular to a one-way valve, an air pump, and a massage device. Background Technology

[0002] Taking a piezoelectric pump as an example, a piezoelectric ceramic pump utilizes the piezoelectric effect of piezoelectric ceramics to deform a piezoelectric oscillator, causing a change in the volume of the pump chamber and resulting in a change in the pressure within the chamber, thereby achieving the intake or discharge of fluid. Piezoelectric ceramic pumps typically include a check valve to ensure unidirectional fluid flow.

[0003] In related technologies, the one-way valve in a piezoelectric ceramic pump typically includes an inlet layer, a valve diaphragm, a baffle, and an outlet layer arranged sequentially. The inlet layer has perforations that are offset from the perforations on the valve diaphragm to achieve unidirectional gas flow. However, current one-way valves usually involve welding the inlet layer, valve diaphragm, and baffle together first, and then laser-processing the perforations on the valve diaphragm. This process can easily result in incomplete misalignment between the perforations on the valve diaphragm and the perforations on the inlet layer, thus affecting the airtightness of the one-way valve. Utility Model Content

[0004] This application discloses a one-way valve, an air pump, and a massage device, which can reduce the risk of failure of the one-way valve's airtight function.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application disclose a one-way valve, comprising:

[0006] An air intake layer, wherein an air intake hole is provided on the air intake layer;

[0007] An exhaust layer, wherein the exhaust layer is provided with exhaust holes; and,

[0008] A valve diaphragm structure is provided, with the air inlet layer, the valve diaphragm structure, and the air outlet layer arranged sequentially along the thickness direction of the air inlet layer, and an active space is formed between the valve diaphragm structure and the air outlet layer;

[0009] The valve diaphragm structure includes a sandwich section and a valve diaphragm section connected to the sandwich section. The valve diaphragm section can be fitted to the air inlet layer to cover the air inlet hole. The movable space is used to provide deformation space for the valve diaphragm section. The sandwich section is provided with a through hole extending along its own thickness direction. The valve diaphragm section is provided corresponding to the through hole. An air passage is formed between the outer periphery of the valve diaphragm section and the sandwich section. The air passage is connected to the air outlet hole. The air passage is configured to allow gas to pass through when the valve diaphragm section is deformed.

[0010] The valve diaphragm is configured to deform toward the outlet layer in the active space to expose the inlet, such that the inlet communicates with the air passage.

[0011] The valve diaphragm is also configured to conform to the air intake layer to cover the air intake hole, thereby blocking the communication between the air intake hole and the air passage.

[0012] As an optional implementation, in an embodiment of the first aspect of this application, the minimum flow area of ​​the air passage is greater than the total area of ​​the air inlet holes on the air inlet layer; and / or,

[0013] The total area of ​​the air outlet holes on the air outlet layer is greater than the minimum flow area of ​​the air passage.

[0014] As an optional implementation, in the embodiment of the first aspect of this application, the interlayer portion and the valve diaphragm portion are separately disposed, the interlayer portion is a partition portion, and the valve diaphragm portion is a thin film;

[0015] Along the thickness direction of the air intake layer, the air intake layer, the valve diaphragm portion, the interlayer portion, and the air outlet layer are arranged sequentially, and the through hole is configured to form the active space.

[0016] As an alternative implementation, in an embodiment of the first aspect of this application, a portion of the valve diaphragm is connected to the air intake layer.

[0017] As an alternative implementation, in the embodiment of the first aspect of this application, the thickness of the interlayer is 0.03 mm to 0.06 mm.

[0018] As an alternative implementation, in an embodiment of the first aspect of this application, the surface of the air outlet layer facing the interlayer portion is provided with a groove, and the air outlet is located in the groove.

[0019] As an alternative implementation, in the embodiment of the first aspect of this application, the depth of the groove is 0.03 mm to 0.05 mm.

[0020] As an optional implementation, in an embodiment of the first aspect of this application, the interlayer portion and the valve diaphragm portion have the same thickness, the interlayer portion has an inner wall surface for surrounding the through hole, and the valve diaphragm portion is connected to the inner wall surface so that the valve diaphragm portion is located in the through hole;

[0021] The surface of the air outlet layer facing the interlayer is provided with a groove, the air outlet is located in the groove, and the groove is configured to form the active space.

[0022] As an optional implementation, in an embodiment of the first aspect of this application, the valve diaphragm portion includes an elastic arm and a deformable portion, one end of the elastic arm is connected to the outer periphery of the deformable portion, the other end of the elastic arm is connected to the inner wall surface, the deformable portion covers the air inlet, and the air passage is formed between the deformable portion and the inner wall surface of the interlayer portion.

[0023] As an optional implementation, in an embodiment of the first aspect of this application, the elastic arm includes a first bending portion, a second bending portion, and a connecting portion, wherein the connecting portion is connected between the first bending portion and the second bending portion, the first bending portion is connected to the inner wall surface, the second bending portion is connected to the deformable portion, and the connecting portion extends along the outer periphery of the deformable portion.

[0024] As an optional implementation, in the embodiment of the first aspect of this application, the depth of the groove is 0.03 mm to 0.06 mm; and / or,

[0025] The diameter of the deformable part is D1, and the diameter of the groove is D2, satisfying: D2≥D1+0.3mm.

[0026] As an optional implementation, in the embodiment of the first aspect of this application, the thickness of the air intake layer is 0 mm to 0.4 mm; and / or,

[0027] The flatness of the air intake layer is less than 5 μm; and / or,

[0028] The hardness of the air intake layer is 1 / 2H.

[0029] As an optional implementation, in the embodiment of the first aspect of this application, the thickness of the valve diaphragm is 3μm to 5μm; and / or,

[0030] The thickness of the air outlet layer is 0 mm to 0.4 mm.

[0031] Secondly, this application also discloses an air pump, including a one-way valve as described in the first aspect above.

[0032] As an optional implementation, in an embodiment of the second aspect of this application, the air pump further includes a pump body and a piezoelectric module, the pump body having an air chamber and an air inlet and an air outlet communicating with the air chamber, and the piezoelectric module and the one-way valve are both disposed in the air chamber;

[0033] When energized, the piezoelectric module is configured to move the valve diaphragm away from the air inlet layer when deformed away from the one-way valve, so that gas is drawn in from the air inlet and discharged from the air outlet. When deformed near the one-way valve, the piezoelectric module is configured to move the valve diaphragm closer to the air inlet layer, and the valve diaphragm adheres to the air inlet layer to prevent gas from being discharged from the air inlet.

[0034] As an optional implementation, in an embodiment of the second aspect of this application, the pump body includes an upper shell and a lower shell, the upper shell being connected to the lower shell to form the air cavity between them, both the upper shell and the lower shell being provided with the air inlet, the upper shell or the lower shell being provided with an air outlet, the upper shell being provided with a first air outlet pipe communicating with the air cavity, the lower shell being provided with a second air outlet pipe communicating with the air cavity, the first air outlet pipe communicating with the second air outlet pipe, and both communicating with the air outlet;

[0035] The one-way valve is provided on both sides of the piezoelectric module, and the air inlet layer of the one-way valve is located close to the air inlet.

[0036] As an optional implementation, in an embodiment of the second aspect of this application, the piezoelectric module includes a circuit board, a piezoelectric sheet, and a reset sheet. The circuit board is connected between the upper shell and the lower shell to divide the air cavity into two parts. The piezoelectric sheet and the reset sheet are symmetrically connected to both sides of the circuit board.

[0037] As an alternative implementation, in an embodiment of the second aspect of this application, the center of the one-way valve is collinear with the center of the piezoelectric module.

[0038] Thirdly, this application also discloses a massage device, including an air pump as described in the second aspect above.

[0039] Compared with the prior art, the beneficial effects of this application are:

[0040] The one-way valve, air pump, and massage device provided in this application are configured by fitting a valve diaphragm to the air inlet layer and covering the air inlet hole. The movable space formed between the valve diaphragm structure and the air outlet layer provides deformation space for the valve diaphragm, and an air passage is formed between the outer periphery of the valve diaphragm and the interlayer. When the air pressure on the side of the valve diaphragm structure near the air inlet layer is greater than the air pressure on the side near the air outlet layer, the gas can push the valve diaphragm up, causing it to deform towards the air outlet layer in the movable space, thereby exposing the air inlet hole. This allows the air inlet hole to connect with the air passage, allowing gas entering through the air inlet hole to pass through the air passage and exit through the air outlet hole. When the air pressure on the side of the valve diaphragm structure near the air outlet layer is greater than the air pressure on the side near the air inlet layer, because the valve diaphragm structure is fitted to the air inlet layer and covers the air inlet hole, the valve diaphragm has no deformation space, which can block the connection between the air inlet hole and the air passage, thereby preventing gas from exiting from the air inlet hole. This design allows for unidirectional gas flow through the check valve without requiring the valve diaphragm to be misaligned with the inlet port, thus reducing the risk of the check valve's airtight function failing due to incomplete misalignment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the one-way valve disclosed in this application;

[0043] Figure 2 This is one of the exploded schematic diagrams of the first type of check valve disclosed in this application;

[0044] Figure 3 This is the second exploded view of the first type of check valve disclosed in this application;

[0045] Figure 4 This is a cross-sectional view and a partially enlarged view of the first type of check valve disclosed in this application;

[0046] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0047] Figure 6 for Figure 4 Enlarged schematic diagram of point A when the diaphragm of the middle valve deforms;

[0048] Figure 7 One of the exploded schematic diagrams of the second type of check valve disclosed in this application;

[0049] Figure 8This is the second exploded view of the second type of check valve disclosed in this application;

[0050] Figure 9 This is a cross-sectional view and a partially enlarged view of the second type of check valve disclosed in this application;

[0051] Figure 10 This is a schematic diagram of the valve diaphragm portion of the second type of check valve disclosed in this application;

[0052] Figure 11 This is a schematic diagram of the air pump disclosed in this application;

[0053] Figure 12 This is an exploded view of the air pump disclosed in this application;

[0054] Figure 13 This is a top view of the air pump disclosed in this application;

[0055] Figure 14 for Figure 13 Sectional view at point AA;

[0056] Figure 15 for Figure 13 Sectional view at point BB;

[0057] Figure 16 This is a schematic diagram of the massage device disclosed in this application.

[0058] Explanation of reference numerals in the attached figures:

[0059] 100. One-way valve; 10. Inlet layer; 10a. Inlet port; 20. Outlet layer; 20a. Outlet port; 20b. Groove; 21. Notch; 101. Dispensing area; 30. Valve diaphragm structure; 30a. Movement space; 31. Interlayer; 31a. Through hole; 311. Inner wall surface; 32. Valve diaphragm; 32a. Moving part; 32b. Connecting part; 321. Elastic arm; 321a. First bend; 321b. Second bend; 321c. Connecting part; 322. Deformation part; 33. Air passage;

[0060] 200, Air pump; 201, Pump body; 201a, Air inlet; 201b, Air outlet; 2011, Upper shell; 2011a, First air outlet pipe; 2012, Lower shell; 2012a, Second air outlet pipe; 2013, Air chamber; 202, Piezoelectric module; 2021, Circuit board; 2022, Piezoelectric sheet; 2023, Reset sheet; X, Thickness direction of the air inlet layer; 300, Massage device; 301, Massage body. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In this application, the terms "upper," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0063] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0064] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0065] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0066] One-way valves in related technologies typically include an inlet layer, a baffle plate, a valve diaphragm, and an outlet layer arranged sequentially. By having perforations in the inlet layer that are staggered with the orifices on the valve diaphragm, they facilitate unidirectional gas flow. When gas is blocked by the valve diaphragm through the orifices in the inlet layer, the pressure on the side of the valve diaphragm closer to the inlet layer is greater than the pressure on the side closer to the outlet layer. Because the baffle plate is positioned between the valve diaphragm and the outlet layer, there is room for movement on the side of the valve diaphragm closer to the outlet layer. Gas can push the valve diaphragm up and flow in through the orifices on the valve diaphragm. The orifices on the valve diaphragm and the orifices in the outlet layer are concentrically aligned, so gas passing through the valve diaphragm orifices can directly pass through the outlet layer. This process realizes the flow of gas from the inlet layer to the outlet layer. Conversely, when the pressure on the side of the valve diaphragm closer to the outlet layer is greater than the pressure on the side closer to the inlet layer, because the small holes on the valve diaphragm are misaligned with the inlet layer and there is no downward movement space on the side of the valve diaphragm closer to the inlet layer, the valve diaphragm is pressed against the inlet layer by the pressure on the outlet layer side, thus achieving a sealing effect. This process achieves gas backflow prevention, thereby achieving a unidirectional gas flow effect.

[0067] To ensure that the holes on the valve diaphragm are always misaligned with the holes on the inlet plate, the one-way valve in related technologies typically involves welding the inlet layer, the unperforated valve diaphragm, and the partition plate together first. Then, the small holes on the valve diaphragm are laser-machined. Finally, the outlet layer is closed, and these four components are laser-welded together to form a single one-way valve. In this process, the small holes on the valve diaphragm must be perfectly misaligned with the small holes on the inlet plate to achieve the one-way air intake function. However, in actual production, it is easy for them not to be perfectly misaligned, leading to a loss of the one-way valve's airtightness and affecting its airtightness. Furthermore, since the small holes on the valve diaphragm are laser-melted, unavoidable weld lines remain around the holes, the size of which significantly affects the airtightness of the valve diaphragm. Additionally, the complex structure, cumbersome process, and high processing requirements of the aforementioned one-way valve make it unsuitable for mass production, high efficiency, and low cost.

[0068] Based on the above, this application provides a one-way valve, which includes an inlet layer, a valve diaphragm structure, and an outlet layer arranged sequentially. The valve diaphragm structure includes a sandwich portion and a valve diaphragm portion connected to the sandwich portion. By fitting the valve diaphragm portion to the inlet layer and covering the inlet hole, the movable space formed between the valve diaphragm structure and the outlet layer provides deformation space for the deformation of the valve diaphragm portion, and an air passage is formed between the outer periphery of the valve diaphragm portion and the sandwich portion. When the gas pressure on the side of the valve diaphragm structure near the inlet layer is greater than the gas pressure on the side near the outlet layer, the gas can push the valve diaphragm upwards, causing it to deform towards the outlet layer within its operating space. This exposes the inlet hole, allowing it to connect with the gas passage, thus enabling the gas entering through the inlet hole to pass through the gas passage and exit through the outlet hole. Conversely, when the gas pressure on the side of the valve diaphragm structure near the outlet layer is greater than the gas pressure on the side near the inlet layer, the valve diaphragm structure is fitted tightly to the inlet layer and covers the inlet hole. Since the valve diaphragm has no room to deform, it can block the connection between the inlet hole and the gas passage, preventing gas from exiting through the inlet hole. By improving the valve diaphragm structure of the one-way valve, unidirectional gas flow can be achieved without requiring a hole on the valve diaphragm to be misaligned with the inlet hole, thereby reducing the risk of the one-way valve's airtight function failing due to incomplete misalignment. Furthermore, the one-way valve of this application does not require laser processing of small holes on the valve diaphragm after welding, simplifying processing requirements and improving assembly efficiency.

[0069] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0070] Please refer to the following: Figures 1 to 3 This application discloses a one-way valve 100, which includes an air inlet layer 10, an air outlet layer 20, and a valve diaphragm structure 30. The air inlet layer 10 has an air inlet hole 10a, and the air outlet layer 20 has an air outlet hole 20a. The air inlet layer 10, the valve diaphragm structure 30, and the air outlet layer 20 are arranged sequentially along the thickness direction X of the air inlet layer 10, and a movable space 30a is formed between the valve diaphragm structure 30 and the air outlet layer 20.

[0071] Combination Figure 4 and Figure 5 The valve diaphragm structure 30 includes a sandwich section 31 and a valve diaphragm section 32 connected to the sandwich section 31. The valve diaphragm section 32 can be fitted to the air inlet layer 10 to cover the air inlet hole 10a. The movable space 30a is used to provide deformation space for the valve diaphragm section 32. The sandwich section 31 is provided with a through hole 31a extending along its own thickness direction. The valve diaphragm section 32 is provided corresponding to the through hole 31a. An air passage 33 is formed between the outer periphery of the valve diaphragm section 32 and the sandwich section 31. The air passage 33 is connected to the air outlet hole 20a. The air passage 33 is configured to allow gas to pass through when the valve diaphragm section 32 is deformed.

[0072] The valve diaphragm 32 is configured to deform toward the air outlet layer 20 in the active space 30a to expose the air inlet 10a, thereby connecting the air inlet 10a with the air passage 33. The valve diaphragm 32 is also configured to conform to the air inlet layer 10 to cover the air inlet 10a, thereby blocking the connection between the air inlet 10a and the air passage 33.

[0073] By attaching the valve diaphragm portion 32 to the inlet layer 10 and covering the inlet hole 10a, the movable space 30a formed between the valve diaphragm structure 30 and the outlet layer 20 provides deformation space for the valve diaphragm portion 32, and an air passage 33 is formed between the outer periphery of the valve diaphragm portion 32 and the interlayer portion 31. When the air pressure on the side of the valve diaphragm structure 30 near the inlet layer 10 is greater than the air pressure on the side of the valve diaphragm structure 30 near the outlet layer 20, the gas can push the valve diaphragm portion 32 up, causing it to deform toward the outlet layer 20 in the movable space 30a, thereby exposing the inlet hole 10a, so that the inlet hole 10a communicates with the air passage 33, and the gas entering from the inlet hole 10a passes through the air passage 33 and is discharged through the outlet hole 20a. When the air pressure on the side of the valve diaphragm structure 30 near the outlet layer 20 is greater than the air pressure on the side of the valve diaphragm structure 30 near the inlet layer 10, since the valve diaphragm structure 30 is fitted to the inlet layer 10 and covers the inlet hole 10a, the valve diaphragm portion 32 has no deformation space, which can block the communication between the inlet hole 10a and the air passage 33, thereby preventing gas from being discharged from the inlet hole 10a. Thus, by improving the valve diaphragm structure 30 of the one-way valve 100, unidirectional gas flow can be achieved without requiring holes in the valve diaphragm portion 32 to be misaligned with the inlet hole 10a, thereby reducing the risk of the one-way valve 100's airtight function failing due to incomplete misalignment. Furthermore, the one-way valve 100 of this application does not require laser processing of small holes on the valve diaphragm after welding, simplifying processing requirements and improving assembly efficiency.

[0074] Furthermore, since the one-way valve 100 of this application does not need to have an opening on the valve diaphragm 32 that is misaligned with the air inlet 10a, there is no need to reserve an opening distance between the air inlets 10a of the air inlet layer 10. Therefore, more air inlets 10a can be provided with the same size of the air inlet layer 10. When the flow rate remains constant, the air inlet cross-sectional area of ​​the air inlet layer 10 increases, and the flow rate of the fluid that can pass through is greater, thereby making the one-way valve 100 output a larger flow rate.

[0075] It is understood that the valve diaphragm 32 is deformable, and the deformation direction is: along the thickness direction X of the intake layer 10 and from the intake layer 10 to the outlet layer 20. That is, along the thickness direction X of the intake layer 10 and from the intake layer 10 to the outlet layer 20, the valve diaphragm 32 has deformation space, and the valve diaphragm 32 will be pushed up by the pressure on the intake layer 10 side, deforming closer to the outlet layer 20, so that gas can be discharged from the outlet hole 20a through the valve diaphragm 32. However, along the thickness direction X of the intake layer 10 and from the outlet layer 20 to the intake layer 10, the valve diaphragm 32 has no deformation space, and the valve diaphragm 32 will be pressed against the intake layer 10 by the pressure on the outlet layer 20 side, preventing gas from being discharged from the intake hole 10a.

[0076] See Figure 6 , Figure 6 for Figure 4 An enlarged schematic diagram of point A when the valve diaphragm 32 is deformed. The gas path from the inlet 10a to the outlet 20a can be as follows: it enters from the inlet 10a, flows through the space where the valve diaphragm 32 is lifted, then flows through the air passage 33, and finally exits through the outlet 20a.

[0077] Optionally, the air inlet layer 10 and the air outlet layer 20 can be stainless steel sheets or rigid plastic sheets. The air inlet layer 10 and the air outlet layer 20 are respectively provided with a plurality of air inlet holes 10a and air outlet holes 20a, wherein the air inlet holes 10a and air outlet holes 20a can be arranged in a circular or array-like manner. The specific arrangement can be selected according to actual needs, and this embodiment does not limit it. The valve diaphragm 32 can be made of PI film (Polyimide Film) or PET film (Polyester Film). This material is lightweight and has high tensile strength, which allows the valve diaphragm 32 to cover the air inlet holes 10a while minimizing the weight of the valve diaphragm 32, making the valve diaphragm 32 more easily deformable, thereby facilitating the rapid response of the one-way valve 100.

[0078] In some embodiments, the thickness of the air intake layer 10 is 0 mm to 0.4 mm. Optionally, the thickness of the air intake layer 10 can be 0 mm to 0.4 mm, 0.1 mm to 0.4 mm, 0.1 mm to 0.3 mm, or 0.2 mm to 0.3 mm, etc. For example, the thickness of the air intake layer 10 can be 0.1 mm, 0.15 mm, or 0.2 mm, etc.

[0079] In some embodiments, the hardness of the air intake layer 10 is 1 / 2H. It should be noted that a hardness of 1 / 2H refers to the hardness grade of stainless steel as HV310-370, that is, the material of the air intake layer 10 can be stainless steel with a hardness between the above range.

[0080] Since the air inlet layer 10 serves as the support plate for the valve diaphragm 32, it needs to be free from or not easily deformed when subjected to pressure. Based on this, by setting a reasonable range of hardness and thickness, it is possible to ensure its own structural strength, prevent deformation, and provide better support for the valve diaphragm 32.

[0081] In some embodiments, the flatness of the air inlet layer 10 is less than 5 μm. Optionally, the flatness of the air inlet layer 10 can be less than 4 μm, less than 3 μm, or less than 2 μm, for example, the flatness of the air inlet layer 10 can be 0.1 μm, 0.2 μm, or 0.3 mm, etc. Since the valve diaphragm portion 32 is attached to the air inlet layer 10, the tightness between the two affects the airtightness function of the one-way valve 100. By setting a lower flatness, the adhesion between the valve diaphragm portion 32 and the air inlet layer 10 can be tighter, resulting in a better airtightness effect of the valve diaphragm portion 32.

[0082] In some embodiments, the thickness of the valve diaphragm portion 32 is 3 μm to 5 μm. Optionally, the thickness of the valve diaphragm portion 32 can be 3 μm to 4 μm, 4 μm to 5 μm, or 3.5 μm to 4.5 μm, etc. For example, the thickness of the valve diaphragm portion 32 can be 3 μm, 4 μm, or 5 μm, etc.

[0083] As a deformable component, if the valve diaphragm 32 is too thick, its deformation or recovery will be slow, which is detrimental to its rapid response. If the thickness is too thin, its tensile strength will be low, making it prone to breakage during repeated vibration and deformation. Therefore, by setting the thickness of the valve diaphragm 32 within a reasonable range, the weight of the valve diaphragm 32 can be reduced as much as possible, while still ensuring that the valve diaphragm 32 has a rapid response capability and a certain tensile strength.

[0084] In some embodiments, the thickness of the venting layer 20 is 0 mm to 0.4 mm. Optionally, the thickness of the venting layer 20 can be 0 mm to 0.4 mm, 0.1 mm to 0.4 mm, 0.1 mm to 0.3 mm, or 0.2 mm to 0.3 mm, for example, 0.1 mm, 0.15 mm, or 0.2 mm. By setting the thickness of the venting layer 20 within a reasonable range, its structural strength can be effectively guaranteed.

[0085] In some embodiments, the minimum flow area of ​​the air passage 33 is greater than the total area of ​​the air inlet holes 10a on the air inlet layer 10; and / or, the total area of ​​the air outlet holes 20a on the air outlet layer 20 is greater than the minimum flow area of ​​the air passage 33.

[0086] That is, in one example, the minimum flow area of ​​the air passage 33 is greater than the total area of ​​the air inlet holes 10a on the air inlet layer 10. By setting the minimum flow area of ​​the air passage 33 to be greater than the total area of ​​the air inlet holes 10a, the gas passing through the air inlet holes 10a can quickly pass through the valve diaphragm structure 30. If the minimum flow area of ​​the air passage 33 is less than the total area of ​​the air inlet holes 10a on the air inlet layer 10, this node will form a resistance to the gas inflow, affecting the smoothness of the gas flow.

[0087] In another example, the total area of ​​the vent holes 20a on the vent layer 20 is greater than the minimum flow area of ​​the air passage 33. By setting the total area of ​​the vent holes 20a to be greater than the minimum flow area of ​​the air passage 33, the gas passing through the valve diaphragm structure 30 can be quickly discharged through the vent holes 20a.

[0088] In another example, the minimum flow area of ​​the air passage 33 is greater than the total area of ​​the air inlet holes 10a on the air inlet layer 10, and the total area of ​​the air outlet holes 20a on the air outlet layer 20 is greater than the minimum flow area of ​​the air passage 33. By making the minimum flow area of ​​the air passage 33 greater than the total area of ​​the air inlet holes 10a, but smaller than the total area of ​​the air outlet holes 20a, that is, the flow area of ​​the nodes through which the gas passes increases each time along the gas flow path. This ensures that the gas flows smoothly from entry to exit, thereby helping to guarantee the rapid response of the one-way valve 100.

[0089] It should be noted that the area of ​​the air passage 33 formed between the valve diaphragm 32 and the interlayer 31 changes after deformation. The minimum flow area of ​​this air passage 33 refers to the area between the valve diaphragm 32 and the interlayer 31 when the valve diaphragm 32 is not deformed. This flow area can be the difference between the area of ​​the through hole 31a and the movable area of ​​the valve diaphragm 32 (i.e., the area falling within the through hole 31a in the thickness direction X of the air inlet layer 10). Since the air inlet layer 10 and the air outlet layer 20 are respectively provided with a plurality of air inlets 10a and air outlets 20a, the total area of ​​the air inlets 10a is the sum of the areas of the plurality of air inlets 10a, and the total area of ​​the air outlets 20a is the sum of the areas of the plurality of air outlets 20a.

[0090] Optionally, please continue reading Figure 2 Multiple notches 21 are provided on the outer periphery of the exhaust layer 20, and correspondingly, multiple notches 21 are also provided on the outer periphery of the valve diaphragm structure 30. The notches 21 can be used for laser welding positioning. The outer dimensions of the exhaust layer 20 are larger than those of the valve diaphragm structure 30, and the outer dimensions of the valve diaphragm structure 30 are larger than those of the inlet layer 10. That is, along the thickness direction X of the inlet layer 10 and in the direction from the exhaust layer 20 to the inlet layer 10, the outer dimensions of the three decrease sequentially. This arrangement makes it easier to check for missed welds or weak welds after laser welding.

[0091] Optionally, the interlayer portion 31 and the valve diaphragm portion 32 can be provided separately, or they can be provided as a single unit. The following will describe these two methods respectively.

[0092] In some embodiments, such as Figure 2 and Figure 3 As shown, the interlayer portion 31 and the valve membrane portion 32 are separately provided. The interlayer portion 31 is a partition portion, and the valve membrane portion 32 is a thin film. Along the thickness direction X of the air inlet layer 10, the air inlet layer 10, the valve membrane portion 32, the interlayer portion 31, and the air outlet layer 20 are arranged sequentially, and the through hole 31a is configured to form an active space 30a.

[0093] By dividing the valve diaphragm structure 30 into two parts, a sandwich section 31 and a valve diaphragm section 32, a space for the valve diaphragm section 32 to deform is formed by using the through hole 31a of the sandwich section 31.

[0094] It is worth noting that when the interlayer portion 31 and the valve membrane portion 32 are separately provided, the valve membrane portion 32 is located between the air outlet layer 20 and the interlayer portion 31. In the thickness direction X of the air inlet layer 10, part of the valve membrane portion 32 falls within the range of the through hole 31a, so that an air passage 33 is formed between the outer periphery of the valve membrane portion 32 and the interlayer portion 31.

[0095] Optionally, in this embodiment, the interlayer portion 31 can be made of stainless steel sheet or rigid plastic. The shape of the through hole 31a on the interlayer portion 31 includes, but is not limited to, circular, square, elliptical, etc. The through hole 31a is the movable area of ​​the valve diaphragm portion 32 (that is, the area where the valve diaphragm portion 32 can be deformed), and the part of the interlayer portion 31 that contacts the valve diaphragm portion 32 is the fixed area of ​​the valve diaphragm portion 32.

[0096] In related technologies, the valve diaphragm 32 is usually directly sandwiched between the air inlet layer 10 and the partition plate. The valve diaphragm 32 and the air inlet layer 10 are not completely fixed, which can easily lead to relative movement and thus cause the airtight function to fail. Especially under transportation and long-term vibration conditions, this structural design will greatly increase the risk of the one-way valve 100 failing to airtight function.

[0097] Continue reading Figure 2 and Figure 3 Based on this, in some embodiments, a portion of the valve diaphragm 32 is connected to the air intake layer 10. It can be understood that the valve diaphragm 32 can be divided into two parts: a movable part 32a, which falls within the range of the through hole 31a of the interlayer 31, and a connecting part 32b, which is connected to the air intake layer 10.

[0098] By connecting the valve diaphragm 32 to the air intake layer 10, the valve diaphragm 32 is fixed to the air intake layer 10. Compared to related technologies where the valve diaphragm 32 is sandwiched between the air intake layer 10 and the interlayer 31, this prevents the failure of the airtight function due to relative displacement. Simultaneously, fixing the valve diaphragm 32 to the air intake layer 10 improves the response efficiency of the valve diaphragm 32 and helps improve the balance of its high-frequency vibrations. It should be noted that the aforementioned high-frequency vibrations can be vibrations with frequencies of 1000Hz and above.

[0099] Optionally, there can be two connecting portions 32b, which are symmetrically connected to the outer periphery of the movable portion. In this way, while achieving an effective connection between the valve diaphragm portion 32 and the air inlet layer 10, the area of ​​the air passage 33 between the outer periphery of the valve diaphragm portion 32 and the interlayer portion 31 can be larger, thereby allowing a larger flow rate of gas to pass through.

[0100] Optionally, the surface of the air inlet layer 10 near the valve diaphragm portion 32 has two dispensing areas 101, which can be used to dispense adhesive to achieve a fixed connection between the valve diaphragm portion 32 and the interlayer portion 31. The adhesive can be epoxy resin or UV adhesive. Of course, in other embodiments, the valve diaphragm portion 32 can also be attached to the air outlet layer 20 by bonding.

[0101] In some embodiments, the thickness of the interlayer portion 31 is 0.03 mm to 0.06 mm. Optionally, the thickness of the interlayer portion 31 can be 0.03 mm to 0.05 mm, 0.03 mm to 0.04 mm, 0.04 mm to 0.05 mm, or 0.05 mm to 0.06 mm, etc. For example, the thickness of the interlayer portion 31 can be 0.03 mm, 0.04 mm, 0.05 mm, or 0.06 mm, etc.

[0102] The thickness of the interlayer 31 directly affects the opening and closing response efficiency of the valve diaphragm 32. A thicker interlayer 31 results in a larger intake volume flow rate but a slower check valve response. Conversely, a thinner interlayer 31 results in a smaller intake volume flow rate but a faster check valve response. Therefore, by limiting the thickness of the interlayer 31 to between 0.03mm and 0.06mm, rapid gas inflow and closure can be achieved, enabling a faster response speed for the one-way valve 100 while maintaining the intake flow rate within a reasonable range.

[0103] For example, when a higher air pressure but lower flow rate is required in an air pump 200, the one-way valve 100 needs to respond faster, and the thickness of the interlayer 31 can be thin, for example, 0.03 mm. When a lower air pressure but higher flow rate is required in an air pump 200, the inlet volume flow rate of the one-way valve 100 needs to be larger, and the thickness of the interlayer 31 needs to be thick, for example, 0.06 mm.

[0104] Combination Figures 3 to 6 In some embodiments, the surface of the vent layer 20 facing the interlayer portion 31 is provided with a groove 20b, and the vent hole 20a is located within the groove 20b. By providing the groove 20b on the vent layer 20, on the one hand, it can serve as the movable space 30a of the valve diaphragm portion 32, and on the other hand, it can compensate for the reduction in the exhaust space of the vent layer 20 when the valve diaphragm portion 32 deforms upward, increasing the sufficient longitudinal exhaust distance, so that there is sufficient exhaust space between the valve diaphragm portion 32 and the vent layer 20, and reducing exhaust resistance.

[0105] Optionally, the outer dimension of the groove can be larger than the outer dimension of the valve diaphragm 32. That is, in the thickness direction X of the inlet layer 10, the projection range of the valve diaphragm 32 on the outlet layer 20 falls within the range of the groove 20b. Taking the groove 20b and the valve diaphragm 32 as both being circular as an example, the diameter of the groove 20b can be larger than the diameter of the valve diaphragm 32. Optionally, the difference between the diameter of the groove 20b and the diameter of the valve diaphragm 32 can be 0.3 mm, which can provide a more reasonable exhaust space for the deformation of the valve diaphragm 32.

[0106] In some embodiments, the depth of the groove 20b can be 0.03mm to 0.05mm. Optionally, the thickness of the groove 20b can be 0.03mm to 0.04mm, 0.04mm to 0.05mm, or 0.35mm to 0.45mm, etc. For example, the thickness of the groove 20b can be 0.03mm, 0.04mm, or 0.05mm, etc.

[0107] If the depth of the groove 20b is too small, it cannot effectively compensate for the reduction in exhaust space of the outlet layer 20 when the valve diaphragm 32 deforms; if the depth of the groove 20b is too large, it will affect the time it takes for gas to be discharged between the valve diaphragm 32 and the outlet layer 20, thus affecting the working efficiency of the one-way valve 100. Therefore, by setting the depth of the groove 20b within a reasonable range, both the reduction in exhaust space of the outlet layer 20 when the valve diaphragm 32 deforms and the rapid response characteristics of the one-way valve 100 are taken into account.

[0108] See Figures 7 to 9 In some other embodiments, the interlayer portion 31 and the valve diaphragm portion 32 have the same thickness. The interlayer portion 31 has an inner wall surface 311 for surrounding the through hole 31a. The valve diaphragm portion 32 is connected to the inner wall surface 311 so that the valve diaphragm portion 32 is located in the through hole 31a. The surface of the vent layer 20 facing the interlayer portion 31 has a groove 20b, and the vent hole 20a is located in the groove 20b. The groove 20b is configured to form an active space 30a.

[0109] While keeping the thickness of the valve diaphragm portion 32 unchanged, the interlayer portion 31 and the valve diaphragm portion 32 are set to have the same thickness, and the valve diaphragm portion 32 is placed in the through hole 31a of the interlayer portion 31. The overall thickness of the valve diaphragm structure 30 can be made thinner, ensuring the rapid response of the one-way valve 100 as a whole and its ability to withstand high pressure.

[0110] Since the thickness of the interlayer portion 31 and the valve diaphragm portion 32 is the same, and the valve diaphragm portion 32 is located in the through hole 31a of the interlayer portion 31 and connected to the inner wall surface 311, the interlayer portion 31 cannot provide the movement space 30a for the deformation of the valve diaphragm portion 32. Therefore, the groove 20b formed on the air outlet layer 20 is used to provide the deformation space for the valve diaphragm portion 32, so as to ensure the effective deformation of the valve diaphragm portion 32.

[0111] It is understood that the interlayer portion 31 and the valve diaphragm portion 32 are located in the same plane and there is no obvious height difference between them. In this embodiment, the interlayer portion 31 and the valve diaphragm portion 32 can be integrally provided, or the interlayer portion 31 and the valve diaphragm portion 32 can be separately provided.

[0112] Typically, the valve diaphragm portion 32 is relatively thin. Since the interlayer portion 31 and the valve diaphragm portion 32 have the same thickness, if they are set as separate parts, the manufacturing process is more complex and the precision requirements are higher. Preferably, the interlayer portion 31 and the valve diaphragm portion 32 are set as an integral part, which can simplify the manufacturing process, ensure the reliability of the valve diaphragm structure 30, and improve production efficiency.

[0113] See Figure 10 In some embodiments, the valve diaphragm portion 32 includes an elastic arm 321 and a deformable portion 322. One end of the elastic arm 321 is connected to the outer periphery of the deformable portion 322, and the other end of the elastic arm 321 is connected to the inner wall surface 311. The deformable portion 322 covers the air inlet 10a, and an air passage 33 is formed between the deformable portion 322 and the inner wall surface 311 of the interlayer portion 31.

[0114] By setting the elastic arm 321, the tension that pulls the deformable part 322 to its original position can always exist, so the deformable part 322 in the valve diaphragm part 32 can return to its original position more quickly. While realizing the one-way backflow prevention function of gas, it can make the response effect of the valve diaphragm part 32 faster, which is more suitable for use in the high-pressure, low-flow air pump 200.

[0115] Optionally, the number of elastic arms 321 can be multiple, such as two, three or four, as long as they can ensure effective vibration of the deformable part 322 and sufficient flow area of ​​the air passage 33. The specific number is not limited in this embodiment.

[0116] It is understood that in this embodiment, the minimum flow area of ​​the air passage 33 is the difference between the area of ​​the through hole 31a and the areas of the elastic arm 321 and the deformable part 322. Furthermore, in this embodiment, the valve diaphragm part 32 is deformed so that the gas flow path is the same as the gas flow path in the aforementioned embodiment where the valve diaphragm part 32 and the interlayer part 31 are separately arranged; for details, please refer to the foregoing, which will not be elaborated upon here.

[0117] To ensure that the elastic arm 321 has better elastic force to guarantee effective vibration during deformation, in some embodiments, see further details. Figure 10 The elastic arm 321 includes a first bending portion 321a, a second bending portion 321b, and a connecting portion 321c. The connecting portion 321c is connected between the first bending portion 321a and the second bending portion 321b. The first bending portion 321a is connected to the inner wall surface 311, the second bending portion 321b is connected to the deformation portion 322, and the connecting portion 321c extends along the outer periphery of the deformation portion 322.

[0118] The elastic arm 321 is configured to include a first bending portion 321a, a second bending portion 321b, and a connecting portion 321c. The connecting portion 321c extends along the outer periphery of the deformable portion 322. That is, the elastic arm 321 has a certain extension length, which makes the deformation of the deformable portion 322 easier and the response speed more efficient.

[0119] In some embodiments, the depth of the groove 20b is 0.03 mm to 0.06 mm. That is, when the interlayer portion 31 and the valve diaphragm portion 32 have the same thickness, the depth of the groove 20b can be 0.03 mm to 0.06 mm. Optionally, the thickness of the groove 20b can be 0.03 mm to 0.05 mm, 0.03 mm to 0.04 mm, 0.04 mm to 0.05 mm, or 0.05 mm to 0.06 mm, etc. For example, the thickness of the groove 20b can be 0.03 mm, 0.04 mm, 0.05 mm, or 0.06 mm, etc.

[0120] Assuming the valve diaphragm portion 32 and the interlayer portion 31 have the same thickness, the function of the groove 20b is to provide space for the deformation of the valve diaphragm portion 32. A smaller groove depth restricts the deformation of the valve diaphragm portion 32, resulting in a smaller gas flow rate entering the inlet port 10a, which cannot effectively achieve the high flow rate of the one-way valve 100. Conversely, a larger groove depth affects the time it takes for gas to exit from the outlet layer 20, thus affecting the efficiency of the one-way valve 100. Therefore, by setting the depth of the groove 20b within a reasonable range, a reasonable deformation space is provided for the deformation of the valve diaphragm portion 32.

[0121] It is worth noting that the maximum upper limit of the depth of the groove 20b in this embodiment is greater than the upper limit of the groove 20b when the valve diaphragm portion 32 and the interlayer portion 31 are arranged sequentially. This is because in this embodiment, the groove 20b mainly provides deformation space for the deformation of the valve diaphragm portion 32, unlike the previous embodiment where the interlayer portion 31 itself can provide the main deformation space for the valve diaphragm portion 32, while the groove 20b serves as exhaust compensation.

[0122] Optionally, the diameters of the deformable portion 322 and the groove 20b can be circular, and correspondingly, the shape of the through hole 31a can also be circular, thus making the gas passage path smoother. Of course, in other embodiments, it can also be square, elliptical, etc.

[0123] In some embodiments, the diameter of the deformable part 322 is D1, and the diameter of the groove 20b is D2, satisfying: D2≥D1+0.3mm. That is, the difference between the diameter of the groove 20b and the diameter of the valve diaphragm part 32 can be greater than or equal to 0.3mm, thus providing a reasonable exhaust space for the deformation of the valve diaphragm part 32.

[0124] See Figure 11 This application also discloses an air pump 200, which may include the one-way valve 100 as described above. The air pump 200 can be a piezoelectric pump or an electromagnetic pump. The piezoelectric pump utilizes the piezoelectric effect to deform a piezoelectric vibrator, causing a change in the volume of the pump chamber and resulting in a change in pressure within the chamber, thereby enabling the intake or discharge of fluid through the one-way valve 100. The electromagnetic pump uses an electromagnetic coil to drive the valve diaphragm 32 of the one-way valve 100 to reciprocate, achieving unidirectional fluid flow.

[0125] Combination Figures 11 to 14 In some embodiments, the air pump 200 may include a pump body 201 and a piezoelectric module 202. The pump body 201 has an air chamber 2013 and an air inlet 201a and an air outlet 201b communicating with the air chamber 2013. The piezoelectric module 202 and the one-way valve 100 are both disposed in the air chamber 2013.

[0126] When energized, the piezoelectric module 202 is configured to move the valve diaphragm 32 away from the air intake layer 10 when deformed away from the one-way valve 100, so that gas is drawn in from the air intake port 201a and discharged from the air outlet port 201b. When deformed near the one-way valve 100, the piezoelectric module 202 is configured to move the valve diaphragm 32 near the air intake layer 10, so that the valve diaphragm 32 adheres to the air intake layer 10 to prevent gas from being discharged from the air intake port 201a.

[0127] Thus, when the piezoelectric module 202 is powered on, it will vibrate up and down at a high frequency. Through the change in its internal volume, it can guide the airflow and achieve the function of inflation or deflation.

[0128] See Figures 12 to 15 In some embodiments, the pump body 201 includes an upper shell 2011 and a lower shell 2012. The upper shell 2011 is connected to the lower shell 2012 to form an air cavity 2013 between them. Both the upper shell 2011 and the lower shell 2012 are provided with air inlets 201a and air outlets 201b. The upper shell 2011 is provided with a first air outlet pipe 2011a communicating with the air cavity 2013, and the lower shell 2012 is provided with a second air outlet pipe 2012a communicating with the air cavity 2013. The first air outlet pipe 2011a communicates with the second air outlet pipe 2012a and both communicate with the air outlet 201b. One-way valves 100 are provided on both sides of the piezoelectric module 202, and the air inlet layers 10 of the one-way valves 100 are located close to the air inlets 201a.

[0129] By setting two one-way valves 100 and using the piezoelectric module 202 to drive the movement of the two one-way valves 100, gas can enter the pump body 201 through the two air inlets 201a, thereby increasing the gas flow rate and thus helping to increase the flow rate of the air pump 200.

[0130] In some embodiments, the piezoelectric module 202 includes a circuit board 2021, a piezoelectric sheet 2022, and a reset sheet 2023. The circuit board 2021 is connected between the upper shell 2011 and the lower shell 2012 to divide the air cavity 2013 into two parts. The piezoelectric sheet 2022 and the reset sheet 2023 are symmetrically connected to both sides of the circuit board 2021.

[0131] By symmetrically arranging the piezoelectric element 2022 and the reset element 2023 on both sides of the circuit board 2021, the balance and consistency of vibration can be ensured.

[0132] It should be noted that the reset piece 2023 is a sheet-like structure with the same shape, size and weight as the piezoelectric piece 2022. This enables the reset piece 2023 to function as a counterweight, thereby ensuring the balance of vibration of the piezoelectric module 202.

[0133] Optionally, the piezoelectric element 2022 can be made of ceramic, single crystal (e.g., quartz), or ceramic-polymer composite.

[0134] In some embodiments, the center of the one-way valve 100 is collinear with the center of the piezoelectric module 202. That is, the one-way valve 100 is located at the center of the piezoelectric module 202.

[0135] The center position is where the piezoelectric module 202 has the largest amplitude, so the valve diaphragm of the one-way valve 100 responds the fastest at this position. The valve diaphragm will vibrate with the piezoelectric module 202 up and down with the highest efficiency, thus making the one-way valve 100 have a higher response efficiency.

[0136] It is understandable that the piezoelectric module 202 vibrates at a certain height from the one-way valve 100. This distance is determined according to the amplitude of the vibration, and optionally, this distance can be 0.2 mm, thereby maximizing the high-frequency vibration of the valve diaphragm 32.

[0137] Optionally, the driving pressure of the air pump 200 can be 0 kPa to 40 kPa, and the flow rate that can be transmitted can be 0 L / min to 2 L / min. For example, the pressure and flow rate can be 1.30 kPa and 1 L / min, respectively, or the pressure and flow rate can be 2.15 kPa and 2 L / min, respectively, to achieve a large flow rate and high pressure for the air pump 200.

[0138] The air pump 200 of this embodiment uses a piezoelectric ceramic vibrator that vibrates at a high frequency when driven by a square wave voltage, guiding airflow through changes in the internal volume of the pump body 201. Since the one-way valve 100 is located at the upper and lower center positions of the piezoelectric module 202, the valve diaphragm 32 vibrates with the piezoelectric module 202 in a highly efficient manner. When the piezoelectric module 202 deforms away from the one-way valve 100, the valve diaphragm 32 of the one-way valve 100 deforms away from the air intake layer 10 following the deformation of the piezoelectric module 202. External air enters the interior of the pump body 201 through the air intake port 10a of the one-way valve 100. When the piezoelectric module 202 deforms close to the one-way valve 100, the valve diaphragm 32 of the one-way valve 100 deforms close to the air intake layer 10 following the deformation of the piezoelectric module 202. At this time, the valve diaphragm 32 is pressed on the air intake layer 10, and the gas cannot be discharged from the air intake port 10a. This realizes the backflow prevention function of the one-way valve 100. The air pump 200 realizes the unidirectional flow of gas by utilizing the unidirectional conduction function of the one-way valve 100, thereby achieving the functions of inflation and deflation. The gas enters through the one-way valve 100 of the two air intake ports 201a and flows out from the air outlet 201b. This is the principle of positive pressure (inflation).

[0139] It is understandable that by reversing the configuration of the one-way valve 100, that is, by placing the outlet layer 20 of the one-way valve 100 close to the inlet 201a, gas can be discharged through the one-way valve 100, thus achieving the principle of negative pressure (air extraction).

[0140] See Figure 16 This application also discloses a massage device 300, including the air pump 200 as described in the above embodiment. The massage device may further include a massage body 301, and the air pump 200 may be disposed in the massage body 301. The massage device 300 may include, but is not limited to, smart wearable electronic products that require airbag inflation or canister vacuuming functions, such as eye airbag massagers, head airbag massagers, portable blood pressure monitors, airbag blood pressure monitoring watches, and negative pressure adsorption massagers.

[0141] The foregoing has provided a detailed description of the one-way valve, air pump, and massage device disclosed in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the one-way valve, air pump, and massage device of this application and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A one-way valve, characterized in that, include: An air intake layer (10) is provided with an air intake hole (10a); An exhaust layer (20) is provided with exhaust holes (20a); and, A valve membrane structure (30) is provided along the thickness direction of the air inlet layer (10). The air inlet layer (10), the valve membrane structure (30), and the air outlet layer (20) are arranged in sequence, and an active space (30a) is formed between the valve membrane structure (30) and the air outlet layer (20). The valve diaphragm structure (30) includes a sandwich section (31) and a valve diaphragm section (32) connected to the sandwich section (31). The valve diaphragm section (32) can be fitted to the air inlet layer (10) to cover the air inlet hole (10a). The movable space (30a) is used to provide deformation space for the valve diaphragm section (32). The sandwich section (31) is provided with a through hole (31a) extending along its own thickness direction. The valve diaphragm section (32) is provided corresponding to the through hole (31a). An air passage (33) is formed between the outer periphery of the valve diaphragm section (32) and the sandwich section (31). The air passage (33) is connected to the air outlet hole (20a). The air passage (33) is configured to allow gas to pass through when the valve diaphragm section (32) is deformed. The valve diaphragm (32) is configured to deform toward the outlet layer (20) in the active space (30a) to expose the inlet (10a) so that the inlet (10a) communicates with the air passage (33); The valve diaphragm (32) is also configured to fit against the air intake layer (10) to cover the air intake hole (10a) and block the communication between the air intake hole (10a) and the air passage (33).

2. The one-way valve according to claim 1, characterized in that, The minimum flow area of ​​the air passage (33) is greater than the total area of ​​the air inlet holes (10a) on the air inlet layer (10); and / or, The total area of ​​the air outlet holes (20a) on the air outlet layer (20) is greater than the minimum flow area of ​​the air passage (33).

3. The one-way valve according to claim 1, characterized in that, The interlayer portion (31) and the valve membrane portion (32) are separately provided, the interlayer portion (31) is a partition portion, and the valve membrane portion (32) is a thin film; Along the thickness direction of the air intake layer (10), the air intake layer (10), the valve diaphragm portion (32), the interlayer portion (31) and the air outlet layer (20) are arranged in sequence, and the through hole (31a) is configured to form the active space (30a).

4. The one-way valve according to claim 3, characterized in that, A portion of the valve diaphragm (32) is connected to the air intake layer (10).

5. The one-way valve according to claim 4, characterized in that, The thickness of the interlayer (31) is 0.03 mm to 0.06 mm.

6. The one-way valve according to claim 4, characterized in that, The surface of the air outlet layer (20) facing the interlayer portion (31) is provided with a groove (20b), and the air outlet (20a) is located in the groove (20b).

7. The one-way valve according to claim 6, characterized in that, The depth of the groove (20b) is 0.03mm to 0.05mm.

8. The one-way valve according to claim 1 or 2, characterized in that, The interlayer portion (31) has the same thickness as the valve membrane portion (32). The interlayer portion (31) has an inner wall surface (311) for surrounding the through hole (31a). The valve membrane portion (32) is connected to the inner wall surface (311) so that the valve membrane portion (32) is located in the through hole (31a). The surface of the air outlet layer (20) facing the interlayer portion (31) is provided with a groove (20b), and the air outlet (20a) is located in the groove (20b). The groove (20b) is configured to form the active space (30a).

9. The one-way valve according to claim 8, characterized in that, The valve diaphragm portion (32) includes an elastic arm (321) and a deformable portion (322). One end of the elastic arm (321) is connected to the outer periphery of the deformable portion (322), and the other end of the elastic arm (321) is connected to the inner wall surface (311). The deformable portion (322) covers the air inlet (10a), and the air passage (33) is formed between the deformable portion (322) and the inner wall surface (311) of the interlayer portion (31).

10. The one-way valve according to claim 9, characterized in that, The elastic arm (321) includes a first bending portion (321a), a second bending portion (321b), and a connecting portion (321c). The connecting portion (321c) is connected between the first bending portion (321a) and the second bending portion (321b). The first bending portion (321a) is connected to the inner wall surface (311), the second bending portion (321b) is connected to the deformable portion (322), and the connecting portion (321c) extends along the outer periphery of the deformable portion (322).

11. The one-way valve according to claim 9, characterized in that, The depth of the groove (20b) is 0.03 mm to 0.06 mm; and / or, The diameter of the deformable part (322) is D1, and the diameter of the groove (20b) is D2, satisfying: D2≥D1+0.3mm.

12. The one-way valve according to claim 1, characterized in that, The thickness of the air intake layer (10) is 0 mm to 0.4 mm; and / or, The flatness of the air intake layer (10) is less than 5 μm; and / or, The hardness of the air intake layer (10) is 1 / 2H.

13. The one-way valve according to claim 1, characterized in that, The thickness of the valve diaphragm portion (32) is 3 μm to 5 μm; and / or, The thickness of the air outlet layer (20) is 0 mm to 0.4 mm.

14. An air pump (200), characterized in that, Includes the one-way valve as described in any one of claims 1-13.

15. The air pump (200) according to claim 14, characterized in that, The air pump also includes a pump body (201) and a piezoelectric module (202). The pump body (201) has an air chamber (2013) and an air inlet (201a) and an air outlet (201b) connected to the air chamber (2013). The piezoelectric module (202) and the one-way valve (100) are both disposed in the air chamber (2013). When energized, the piezoelectric module (202) is configured to move the valve diaphragm (32) away from the air intake layer (10) when deformed away from the one-way valve (100), so that gas is drawn in from the air intake (201a) and discharged from the air outlet (201b). When deformed near the one-way valve (100), the piezoelectric module (202) moves the valve diaphragm (32) closer to the air intake layer (10), and the valve diaphragm (32) adheres to the air intake layer (10) to prevent gas from being discharged from the air intake (201a).

16. The air pump (200) according to claim 15, characterized in that, The pump body (201) includes an upper shell (2011) and a lower shell (2012). The upper shell (2011) is connected to the lower shell (2012) to form the air cavity (2013) between them. Both the upper shell (2011) and the lower shell (2012) are provided with the air inlet (201a). The upper shell (2011) or the lower shell (2012) is provided with an air outlet (201b). The upper shell (2011) is provided with a first air outlet pipe (2011a) communicating with the air cavity (2013). The lower shell (2012) is provided with a second air outlet pipe (2012a) communicating with the air cavity (2013). The first air outlet pipe (2011a) is connected to the second air outlet pipe (2012a) and both are connected to the air outlet (201b). The piezoelectric module (202) is provided with one-way valves (100) on both sides, and the air inlet layer (10) of the one-way valve (100) is located close to the air inlet (201a).

17. The air pump (200) according to claim 16, characterized in that, The piezoelectric module (202) includes a circuit board (2021), a piezoelectric sheet (2022), and a reset sheet (2023). The circuit board (2021) is connected between the upper shell (2011) and the lower shell (2012) to divide the air cavity (2013) into two parts. The piezoelectric sheet (2022) and the reset sheet (2023) are symmetrically connected to both sides of the circuit board (2021).

18. The air pump (200) according to claim 15, characterized in that, The center of the one-way valve (100) is collinear with the center of the piezoelectric module (202).

19. A massage device, characterized in that, Includes the air pump (200) as described in any one of claims 14-18.

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