Side air leakage valve

Abstract

The present invention relates to a lateral air leakage valve, comprising a cover plate and a modular valve core, wherein a first recessed portion and a second recessed portion are provided on one side of the cover plate, and the first recessed portion is provided with a through vent hole; the modular valve core is installed on the cover plate, and the first recessed portion is sealed to form a first valve chamber, and the second recessed portion is sealed to form a leak valve chamber, and the modular valve core comprises a first pressing plate, a membrane structure, and a second pressing plate stacked together in sequence from the near cover plate side to the far cover plate side; the first pressing plate is provided with a first leak hole and a second leak hole respectively connected to the leak valve chamber, and a first opening portion facing the first recessed portion, and a second opening portion surrounding the outer periphery of the first leak hole, the second opening portion cooperates with the cover plate to form a second valve chamber, the second valve chamber is connected to the vent hole, and the second leak hole is staggered between the membrane structure and the second pressing plate; the second pressing plate is provided with a first air inlet hole and a second air inlet hole. The present invention is easy to produce, and is easy to miniaturize and thin the leak valve, which is conducive to process control in mass production.

Description

Technical Field

[0001] The invention relates to the technical field of fluid control, and in particular to a lateral air leakage valve. Background Art

[0002] The leaking valve is usually used in conjunction with a micro air pump to form a fast inflation and deflation module, which can be widely used in smart wearable devices such as wrist sphygmomanometers, smart watches and smart bracelets. In order to achieve structural miniaturization, the leaking valve used in smart wearable devices mostly adopts a structure in which a valve housing or a valve seat cooperates with a diaphragm. For example, the valve, fluid control device, and valve disclosed in the application No. CN201380020898.2 are composed of a valve housing and a diaphragm structure. The air inlet side of the valve is connected to the air outlet flow channel of the gas generating device (piezoelectric pump), and the inflation and deflation process is achieved by controlling the pressure on the air inlet side and the air outlet side of the valve. The valve housing or valve seat of the existing leaking valve products has an injection molding or complex machining process, no independent valve core structure, loose structure, difficult manufacturing and assembly, which is not conducive to process control, and it is difficult to further reduce the scrap rate in the production process, resulting in a high waste of resources, and is not conducive to the miniaturization and thinness of the leaking valve. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that existing air leakage valve products have no independent modular valve core structure and a loose structure, which is not conducive to process control and the miniaturization and thinness of the air leakage valve due to the injection molding or complex machining process of the valve housing or valve seat. A lateral air leakage valve is now provided.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a lateral air leakage valve, comprising:

[0005] A cover plate, wherein a first recessed portion and a second recessed portion are provided on one side of the cover plate, and the first recessed portion is provided with a through vent hole;

[0006] A modular valve core is installed on the cover plate, and covers the first recessed portion to form a first valve chamber, and covers the second recessed portion to form a deflation valve chamber. The modular valve core includes a first pressure plate, a membrane structure, and a second pressure plate, which are stacked together in sequence from the side close to the cover plate to the side far from the cover plate to form an integral structure; wherein,

[0007] The first pressing plate is provided with a first air leakage hole and a second air leakage hole respectively connected to the air leakage valve chamber, a first opening portion facing the first recessed portion, and a second opening portion surrounding the outer periphery of the first air leakage hole, the second opening portion cooperates with the cover plate to form a second valve chamber, the second valve chamber is connected to the vent hole, and the second air leakage hole is staggered between the membrane structure and the second pressing plate;

[0008] The second pressing plate is provided with a first flange corresponding to the first opening and protruding toward the cover plate side and a second air inlet hole opposite to the first air leakage hole and the second opening, and the first flange is provided with a penetrating first air inlet hole;

[0009] The membrane structure includes a diaphragm and an intermediate valve plate, the diaphragm is used to block the first leaking hole when air is taken in by the second air inlet hole and to open the first leaking hole when the vent hole is reversely ventilated; the intermediate valve plate is used to elastically deform when air is taken in by the first air inlet hole to form a valve channel connecting the first air inlet hole and the first valve chamber and to reset to block the first air inlet hole when air is not taken in.

[0010] In order to further improve the matching accuracy and sealing performance between the middle valve plate and the first air inlet hole, a second flange protruding away from the cover plate is provided at the middle position of the first flange, the first air inlet hole is provided at the second flange, and a rounded transition is provided between the second flange and the first flange;

[0011] The middle valve plate is used for pressing against the rounded transition area between the first flange and the second flange to block the first air inlet hole when the first air inlet hole is not intake air.

[0012] Furthermore, the first pressing plate has an extension portion, one end of which extends into the second opening portion, and the other end of which extends beyond the first pressing plate; wherein,

[0013] The extension portion blocks the second recessed portion to form the air relief valve chamber. The first air relief hole is disposed at one end of the extension portion, and the second air relief hole is disposed at the other end of the extension portion.

[0014] Furthermore, the cover plate is made of metal material, polymer material or metal-polymer composite material.

[0015] Furthermore, the material of the first pressing plate is a metal material or a polymer material or a metal-polymer composite material.

[0016] Furthermore, the second pressing plate is a polymer diaphragm or a metal diaphragm or a metal-polymer composite diaphragm.

[0017] Furthermore, the diaphragm includes a joint portion and a deformation portion which are connected to each other, the joint portion is clamped between the first pressing plate and the second pressing plate, and the deformation portion is opposite to the first air leakage hole and the second opening portion, and is used to block or open the first air leakage hole.

[0018] Furthermore, the cover plate is composed of a layer of flat plate or a plurality of layers of flat plates stacked together.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects:

[0020] 1. The cover plate is flat as a whole, and the modular valve core is a stacked structure. The two are flat and assembled to form a leaking valve. There is no independent valve housing or valve seat, and there is no injection molding or complex machining process of the valve housing or valve seat in the existing leaking valve product structure. It is easier to miniaturize and thin the leaking valve. At the same time, the modular valve core and the cover plate are made separately and then fitted and packaged, which is conducive to process control in mass production;

[0021] 2. The air leakage valve adopts an independent modular valve core. It can inspect and test the forward opening performance and reverse closing performance, which are the key evaluation indicators of the air leakage valve performance, without assembling into a complete air leakage valve product. The quality of the final product can be controlled in the intermediate process, which is conducive to further reducing the scrap rate and avoiding the waste of raw materials, labor and other resources caused by the subsequent production process based on scraps;

[0022] 3. The first air inlet hole is arranged at the center or near the center of the second flange, and the intermediate valve plate is pressed against the fillet transition area between the first flange and the second flange, that is, the edge of the opening of the first air inlet hole does not directly contact the intermediate valve plate, thereby avoiding the size position deviation of the first air inlet hole during the processing or the burrs formed on the edge of the opening during the processing to affect the matching accuracy and sealing between the intermediate valve plate and the first air inlet hole, thereby improving the reverse cut-off performance of the intermediate valve plate and avoiding the failure of the leakage valve;

[0023] 4. During the deflation process, the gas flows out through the second deflation hole arranged laterally. The second deflation hole is arranged laterally, so there is no need to consider avoiding the deflation hole when installing the external device. In addition, the mounting surface where the vent hole is located and connected to the external gas storage device is flat, which facilitates the installation of the external gas storage device and improves the applicability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a cover plate composed of a layer of flat plates in an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram from another perspective of a cover plate composed of a layer of flat plates in an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of a cover plate formed by stacking multiple flat plates in an embodiment of the present invention;

[0027] Figure 4 is a schematic cross-sectional view of a first flange in an overall conical shape in an embodiment of the present invention;

[0028] Figure 5 It is a schematic cross-sectional view of a first flange which is in a cylindrical shape as a whole in an embodiment of the present invention;

[0029] Figure 6It is a schematic diagram of the decentralized structure of the modular valve core in an embodiment of the present invention;

[0030] Figure 7 is a schematic diagram of a modular valve core dispersion mechanism in an embodiment of the present invention from another perspective;

[0031] Figure 8 Schematic diagram of the structure of a lateral air leakage valve in an embodiment of the present invention;

[0032] Fig. 9 It is a schematic diagram of the inflation process of the lateral air leakage valve in an embodiment of the present invention;

[0033] Fig.10 It is a schematic diagram of the deflation process of the lateral deflation valve in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0035] like Figure 1-Figure 10 As shown, a lateral air leakage valve comprises a cover plate 1 and a modular valve core; wherein,

[0036] A first recessed portion 11 and a second recessed portion 12 are provided on one side of the cover plate 1. The first recessed portion 11 is provided with a through vent hole 111.

[0037] The modular valve core is installed on the cover plate 1, and covers the first recessed portion 11 to form a first valve chamber 52, and covers the second recessed portion 12 to form a deflation valve chamber 51. The modular valve core includes a first pressing plate 2, a membrane structure 3, and a second pressing plate 4, which are stacked together in sequence from the side close to the cover plate 1 to the side far from the cover plate 1 to form an integral structure;

[0038] The first pressing plate 2 is provided with a first air leakage hole 21 and a second air leakage hole 22 respectively connected to the air leakage valve chamber 51, a first opening portion 23 facing the first recessed portion 11, and a second opening portion 24 surrounding the outer periphery of the first air leakage hole 21. The second opening portion cooperates with the cover plate to form a second valve chamber 53. The second valve chamber 53 is connected to the vent hole 111. The second air leakage hole 22 is staggered between the membrane structure 3 and the second pressing plate 4.

[0039] The second pressing plate 4 is provided with a first flange 41 corresponding to the first opening 23 and protruding toward the cover plate 1, and a second air inlet 42 opposite to the first air leakage hole 21 and the second opening 24. The first flange 41 is provided with a first air inlet 43 penetrating therethrough.

[0040] The membrane structure 3 includes a diaphragm 31 and an intermediate valve plate 32. The diaphragm 31 is used to block the first air leakage hole 21 when air is introduced into the second air inlet hole 42 and to open the first air leakage hole 21 when air is introduced into the vent hole 111; the intermediate valve plate 32 is used to elastically deform when air is introduced into the first air inlet hole 43 to form a valve channel connecting the first air inlet hole 43 and the first valve chamber 52 and to reset to block the first air inlet hole 43 when air is not introduced into the first air inlet hole 43.

[0041] In order to better understand the lateral air leakage valve in this embodiment, it is further explained and illustrated below, and it is defined that facing the cover plate side 1 is upward, and the first recessed portion 11 and the second recessed portion 12 are provided on the lower surface of the cover plate 1, but it is not limited thereto.

[0042] like Figure 1-Figure 10 As shown, a lateral air leakage valve comprises a cover plate 1 and a modular valve core fixedly connected to the cover plate 1:

[0043] The cover plate 1 has a lower surface partially recessed upward to form a first recessed portion 11 and a second recessed portion 12. The cover plate 1 is also provided with a through vent hole 111, which is communicated with the first recessed portion 11;

[0044] The cover plate 1 is in the shape of a flat plate as a whole and can be composed of a layer of flat plates, such as Figure 1 , Figure 2 As shown. It can also be composed of multiple layers of flat plates, such as Figure 3 As shown, in this embodiment, the cover plate 1 is composed of a flat plate, which is conducive to reducing the process difficulty and manufacturing cost. The material constituting the cover plate 1 can be a polymer material, a composite material composed of a polymer and a metal, or a metal material, which is not limited here, but is required to have sufficient rigidity. In this embodiment, the cover plate 1 is made of metal, which is conducive to improving the overall rigidity and stability of the structure.

[0045] The modular valve core is installed on the cover plate 1, and covers the first recessed portion 11 to form the first valve chamber 52, and covers the second recessed portion 12 to form the air release valve chamber 51, including a first pressing plate 2, a membrane structure 3, and a second pressing plate 4 stacked together to form an integral structure, and the first pressing plate 2 and the second pressing plate 4 are reversely pressed on the upper and lower sides of the membrane structure 3. The upper surface of the first pressing plate 2 of the modular valve core is attached to the lower surface of the cover plate 1 to form a sealed fixed connection.

[0046] Specifically, the cover plate 1 is flat as a whole, and the modular valve core is a stacked structure. The two are flat and assembled to form a leaking valve, without an independently set valve housing or valve seat, and without the injection molding or complex machining process of the valve housing or valve seat in the existing leaking valve product structure, which makes it easier to miniaturize and thin the leaking valve. At the same time, the modular valve core and the cover plate 1 are made separately and then fit and packaged, which is conducive to process control in mass production. And the installation surface where the vent hole 111 is connected to the external gas storage device is flat, which is convenient for the installation of the external gas storage device and improves the applicability of the product.

[0047] The first pressure plate 2 is provided with a first air leakage hole 21 and a second air leakage hole 22 connected to the air leakage valve chamber 51, and is also provided with a first opening portion 23 and a second opening portion 24 that are spaced apart. The second air leakage hole 22 is staggered between the membrane structure 3 and the second pressure plate 4. The first opening portion 23 is arranged relative to the first recessed portion 11, and the second opening portion 24 is arranged on the outer periphery of the first air leakage hole 21, and cooperates with the cover plate 1 to form a second valve chamber 53, and the second valve chamber 53 is also connected to the vent 111; the second pressure plate 4 protrudes upward at the central position or near the central position of the area of ​​the first opening portion 23 to form a first flange 41, and the top center position or near the center position of the first flange 41 protrudes downward to form a second flange 44, that is, the protruding directions of the first flange 41 and the second flange 44 are opposite, the rising edge of the first flange 41 and the rising edge of the second flange 44 have a rounded transition, and the center position or near the center position of the second flange 44 is provided with a first air inlet hole 43.

[0048] The first pressing plate 2 has an extension portion, one end of which extends into the second opening 24 and the other end of which extends beyond the first pressing plate 2;

[0049] The extension portion blocks the second recessed portion 11 to form a relief valve chamber 51, the first relief hole 21 is provided at one end of the extension portion, and the second relief hole 22 is provided at the other end of the extension portion. Figure 6 , Figure 7 As shown. With such a configuration, the size of the first pressing plate 2 can be further reduced, and miniaturization can be further achieved. In this embodiment, the upper surface and the lower surface of the extension portion are both flush with the first pressing plate 2.

[0050] The first flange 41 is in a trapezoidal cone shape. Figure 4 As shown, or cylindrical, such as Figure 5 As shown, no limitation is given here.

[0051] Meanwhile, the second pressing plate 4 is provided with a second air inlet hole 42 opposite to the first air leakage hole 21 and the second opening 24 .

[0052] The membrane structure 3 includes a diaphragm 31 and an intermediate valve plate 32. The diaphragm 31 includes a joint portion and a deformation portion. The diaphragm 31 is fixedly connected to the first pressure plate 2 and the second pressure plate 4 through the joint portion. The deformation portion is opposite to the first air leakage hole 21 and the second opening portion 24. The deformation portion blocks the first air leakage hole 21 when the second air inlet hole 42 takes in air, and deforms downward when the air vent 111 ventilates in the reverse direction to open the first air leakage hole 21. The intermediate valve plate 32 is composed of a first connecting portion, a second connecting portion and a valve plate body, wherein the intermediate valve plate 32 is fixedly connected to the first pressure plate 2 and the second pressure plate 4 through its first connecting portion, the valve plate body is connected to the first connecting portion through the second connecting portion, and the second connecting portion is provided with at least one through hole portion, and the cross-sectional shape of the hole portion can be circular, rectangular, polygonal, etc., which is not limited here.

[0053] The valve plate body abuts against the rounded transition area between the first flange 41 and the second flange 44, and covers the first air inlet hole 43. The intermediate valve plate 32 is elastically deformed toward the first valve chamber 52 because the valve plate body abuts against the rounded transition area. The intermediate valve plate 32 is used to further elastically deform when air is introduced into the first air inlet hole 43 to form a valve channel connecting the first air inlet hole 43 and the first valve chamber 52, and to slightly reset to block the first air inlet hole 43 when air is not introduced into the first air inlet hole 43. In the initial state, the valve plate body covers the first air inlet hole 43, and the first air inlet hole 43 is not connected to the first valve chamber 52.

[0054] The diaphragm 31 and the intermediate valve plate 32 are integrally formed or separately provided. In this embodiment, the diaphragm 31 and the intermediate valve plate 32 are integrally formed to form the membrane structure 3, which is conducive to reducing the process difficulty and reducing the manufacturing cost. The membrane structure 3 is an elastic membrane, such as a silicone membrane, a rubber membrane, a TPU membrane or other elastic membranes, which are not limited here, so that the deformation part, the second connecting part and the valve plate body can be elastically deformed under the pressure difference.

[0055] The first pressing plate 2 may be made of a polymer material, a composite material composed of a polymer and a metal, or a metal material, which is not limited here, but is required to have sufficient rigidity. In this embodiment, the first pressing plate 2 is made of metal, which is conducive to improving the overall rigidity and stability of the structure.

[0056] The material of the second pressing plate 4 can be a polymer diaphragm, a metal diaphragm or a composite diaphragm composed of a polymer and metal, which is not limited here.

[0057] The first opening 23 covers the first flange 41 and the valve plate body against the rounded transition area and the second connection part to avoid deformation of the first flange 41 and the middle valve plate 32 toward the first valve chamber 52. At the same time, the first recessed portion 11 covers the first flange 41 and the valve plate body against the rounded transition area and the second connection part to avoid deformation of the first flange 41 and the middle valve plate 32 toward the first valve chamber 52. It should be noted that, in the initial state, there is a gap between the valve plate body and the bottom surface of the first valve chamber 52; Figure 6-Figure 10 shown.

[0058] Specifically, the present embodiment adopts an independent modular valve core, which can inspect and test the forward opening performance and reverse cut-off performance, which are key evaluation indicators of the performance of the leakage valve, without being assembled into a complete leakage valve product. The quality of the final product can be controlled in the intermediate process, which is conducive to further reducing the scrap rate and avoiding the waste of resources such as raw materials and labor caused by the subsequent production process based on scraps; the first air inlet hole 43 is arranged at the center or near the center position of the second flange 44, and the valve plate body is against the rounded transition area between the first flange 41 and the second flange 44, that is, the edge of the orifice of the first air inlet hole 43 does not directly contact the valve plate body, thereby avoiding the dimensional position deviation of the first air inlet hole 43 during the processing or the burrs formed on the edge of the orifice during the processing to affect the matching accuracy and sealing between the intermediate valve plate and the first air inlet hole 43, thereby improving the reverse cut-off performance of the intermediate valve plate 32 and avoiding failure of the leakage valve.

[0059] Based on the above structure, the working process of the lateral air leakage valve of this embodiment is as follows:

[0060] During inflation, gas with a certain pressure flows through the second air inlet hole 42, causing the deformed portion of the diaphragm 31 to deform toward the first air relief hole 21. At the same time, gas with the same pressure flows through the first air inlet hole 43 to lift up the valve body of the middle valve plate 32. The middle valve plate 32 is elastically deformed, and a gap is generated between the valve body and the rounded transition area, forming a valve channel connecting the first air inlet hole 43 and the first valve chamber 52. After the pressurized gas flows through the first air inlet hole 43 and the valve channel, it enters the first valve chamber 52. This process will produce a pressure drop, that is, the gas in the first valve chamber 52 The pressure of the gas is lower than the pressure of the gas flowing through the first air inlet hole 43. Since the first valve chamber 52 is connected to the second valve chamber 53, that is, the pressure of the second valve chamber 53 is lower than the pressure of the gas flowing through the second air inlet hole 42, under the action of the pressure difference, the deformed portion of the diaphragm 31 overcomes its own elastic deformation resistance and elastically deforms toward the first air leakage hole 21, and blocks the first air leakage hole 21. Since the first air leakage hole 21 is blocked, the gas with a certain pressure can only flow into the first valve chamber 52 through the first air inlet hole 43, and then flow out to the external gas storage device through the vent hole 111. Fig. 9 shown.

[0061] When air is deflated, the first air inlet hole 43 and the second air inlet hole 42 stop taking in air, the pressure is reduced, and the gas with a certain pressure stored in the external air storage device flows into the first valve chamber 52 and the second valve chamber 53 through the air vent 111. Under the combined effect of the deformation restoring force of the middle valve plate 32 itself and the pressure difference on both sides of the valve plate body, the valve plate body of the middle valve plate 32 is quickly pressed against the arc transition area and blocks the first air inlet hole 43, thereby blocking the path for the gas in the first valve chamber 52 to flow out through the first air inlet hole 43. At the same time, the deformation part of the diaphragm 31 that blocks the first air leakage port releases the blockage of the first air leakage hole 21 under the effect of the gas pressure difference on both sides. At this time, the pressurized gas that flows into the first valve chamber 52 and the second valve chamber 53 from the external air storage device through the air vent 111 can only flow from the first air leakage hole 21 through the air leakage valve chamber 51 and out of the second air leakage hole 22, thereby completing the deflation. Fig.10 shown.

[0062] Specifically, during the deflation process, the gas flows out through the second deflation hole 22 arranged laterally. The second deflation hole 22 is arranged laterally, and there is no need to consider avoiding the second deflation hole 22 when installing the peripheral device.

[0063] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lateral air leakage valve, characterized in that: include: A cover plate (1), wherein a first recessed portion (11) and a second recessed portion (12) are provided on one side of the cover plate (1), and the first recessed portion (11) is provided with a through vent hole (111); A modular valve core is mounted on the cover plate (1), and covers the first recessed portion (11) to form a first valve chamber (52), and covers the second recessed portion (12) to form a deflation valve chamber (51), wherein the modular valve core comprises a first pressing plate (2), a membrane structure (3), and a second pressing plate (4) which are stacked together in sequence from a side close to the cover plate (1) to a side far from the cover plate (1) to form an integral structure; wherein: The first pressure plate (2) is provided with a first air leakage hole (21) and a second air leakage hole (22) respectively connected to the air leakage valve chamber (51), a first opening portion (23) facing the first recessed portion (11), and a second opening portion (24) surrounding the outer periphery of the first air leakage hole (21), the second opening portion cooperates with the cover plate to form a second valve chamber (53), the second valve chamber (53) is connected to the vent hole (111), and the second air leakage hole (22) is staggered between the membrane structure (3) and the second pressure plate (4); The second pressing plate (4) is provided with a first flange (41) corresponding to the first opening (23) and protruding toward the cover plate (1), and a second air inlet hole (42) opposite to the first air leakage hole (21) and the second opening (24), and the first flange (41) is provided with a first air inlet hole (43) penetrating therethrough; The membrane structure (3) comprises a diaphragm (31) and an intermediate valve plate (32); the diaphragm (31) is used to block the first leaking hole (21) when the second air inlet hole (42) is inletting air, and to open the first leaking hole (21) when the vent hole (111) is inletting air in reverse; the intermediate valve plate (32) is used to elastically deform when the first air inlet hole (43) is inletting air to form a valve channel connecting the first air inlet hole (43) and the first valve chamber (52), and to reset to block the first air inlet hole (43) when the first air inlet hole (43) is not inletting air; A second flange (44) protruding away from the cover plate (1) is provided in the middle of the first flange (41); the first air inlet hole (43) is provided through the second flange (44); and a rounded transition is formed between the second flange (44) and the first flange (41); The intermediate valve plate (32) is used to press against the rounded transition area between the first flange (41) and the second flange (44) to block the first air inlet hole (43) when the first air inlet hole (43) is not intake air; The first pressing plate (2) has an extension portion, one end of the extension portion extends into the second opening portion (24), and the other end of the extension portion extends beyond the first pressing plate (2); wherein: The extension portion blocks the second recessed portion (12) to form the air relief valve chamber (51); the first air relief hole (21) is provided at one end of the extension portion; and the second air relief hole (22) is provided at the other end of the extension portion.

2. The lateral air leakage valve according to claim 1, characterized in that: The cover plate (1) is made of a metal material or a polymer material.

3. The lateral air leakage valve according to claim 1, characterized in that: The material of the first pressing plate (2) is a metal material or a polymer material.

4. The lateral air leakage valve according to claim 1, characterized in that: The second pressing plate (4) is a polymer diaphragm or a metal diaphragm.

5. The lateral air leakage valve according to claim 1, characterized in that: The diaphragm (31) comprises a joint portion and a deformation portion which are connected to each other, the joint portion is clamped between the first pressure plate (2) and the second pressure plate (4), and the deformation portion is directly opposite to the first air leakage hole (21) and the second opening portion (24), and is used to block or open the first air leakage hole (21).

6. The lateral air leakage valve according to claim 1, characterized in that: The cover plate (1) is composed of a layer of flat plate or a plurality of layers of flat plates stacked together.

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