A waterproof and breathable valve with an enhanced moisture-barrier structure

Abstract

This invention relates to the field of valve technology and discloses a waterproof and breathable valve with an enhanced moisture-barrier structure, comprising a valve body and a waterproof and breathable membrane installed on the valve body. When the pressure difference is small, the closed static pressure layer within the passage and the waterproof and breathable membrane form a double moisture-barrier barrier, cutting off the gas exchange path between external humid air and the internal gas of the equipment, preventing trace moisture infiltration. Simultaneously, the air-replenishing rubber sealing gasket and the exhaust rubber sealing gasket are tightly fitted to the slot and through hole respectively in the non-working state, blocking reverse gas flow and the infiltration of unfiltered humid air. When the internal pressure is high, the exhaust rubber sealing gasket deforms and conducts through the through hole to complete the exhaust, automatically achieving directional gas flow. During the installation of the insert, the outer protrusion is initially positioned by pressing, and the locking bolt drives the push plate and piston to move, increasing the internal pressure of the insert and forming a reverse support for the outer protrusion, preventing loosening and ensuring long-term structural stability.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, and more specifically, relates to a waterproof and breathable valve with a structure that enhances moisture resistance. Background Technology

[0002] In the use of electronic devices, battery packs and other products, it is often necessary to use waterproof and breathable valves to achieve gas exchange between the inside and outside in order to balance the air pressure, while preventing external moisture, liquid water and other substances from entering the equipment and ensuring the normal operation of the equipment.

[0003] Currently, while existing waterproof and breathable valves can achieve breathability and moisture-blocking functions to a certain extent, they have many shortcomings in practical applications. Regarding moisture-blocking performance, traditional waterproof and breathable valves mostly rely on a single waterproof and breathable membrane for moisture blocking. When the external humidity is high or there are slight fluctuations in air pressure, the membrane alone is insufficient to completely block the penetration of trace amounts of moisture, easily leading to internal dampness and affecting its service life and performance stability. Furthermore, the one-way sealing components of some breathable valves are not tightly sealed when not in operation, easily allowing reverse gas flow, which infiltrates unfiltered humid air into the equipment, further reducing the moisture-blocking effect.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A waterproof and breathable valve with an enhanced moisture barrier structure includes a valve body and a waterproof and breathable membrane mounted on the valve body.

[0007] An end cap is screwed onto the bottom of the valve body, and a baffle plate is installed on the end cap. A through hole is opened on the baffle plate, and a gas-filling rubber sealing gasket is snapped onto the side wall of the baffle plate. One end of the gas-filling rubber sealing gasket overlaps in a slot opened inside the valve body, and the gas-filling rubber sealing gasket is used for one-way gas flow.

[0008] A barrier sleeve is installed on the barrier plate. A through hole is opened on the barrier sleeve. An exhaust rubber sealing gasket is overlapped above the through hole. The exhaust rubber sealing gasket is used to unidirectionally vent gas. A plug sleeve and a storage sleeve are installed at the bottom of the exhaust rubber sealing gasket. The plug sleeve is movably plugged into the barrier sleeve. An external protrusion is provided at the connection between the plug sleeve and the storage sleeve. The external protrusion is snapped into the bottom of the barrier sleeve.

[0009] A piston is slidably installed inside the power storage sleeve. During the sliding process of the piston, the internal space of the sleeve is compressed, and the stability of the outer protrusion is ensured by increasing the air pressure.

[0010] In a preferred embodiment of the present invention, a boss is provided at the center of the valve body, and an inner groove is formed inside the boss. A waterproof and breathable membrane is connected inside the inner groove, and the bottom of the waterproof and breathable membrane is connected to the inside of the valve body through a passage. A plurality of pairs of locking holes are provided on the valve body, and the locking holes are connected to the channels provided on the valve body. The locking holes, channels, waterproof and breathable membrane and passage are interconnected.

[0011] In a preferred embodiment of the present invention, a cover plate is installed on the valve body, and an elastic hook is installed at the bottom of the cover plate. The bottom of the elastic hook is engaged with the top of the locking hole, and the bottom of the cover plate overlaps at the end of the valve body. An arc-shaped surface is provided on the valve body to guide the elastic hook to deform, thereby causing the elastic hook to engage with the locking hole. Several pairs of reinforcing ribs are provided at the bottom of the cover plate.

[0012] In a preferred embodiment of the present invention, a sealing gasket groove is provided at the bottom of the valve body, the sealing gasket groove is used to position the sealing gasket, and a locking thread is installed on the valve body, the locking thread is used to connect with the battery pack.

[0013] In a preferred embodiment of the present invention, a connecting sleeve is installed on the side wall of the end cover. The connecting sleeve is inserted into the bottom of the valve body, and the side wall of the connecting sleeve is provided with a connecting thread. The connecting thread is used to screw into the valve body, and the direction of rotation of the connecting thread is opposite to that of the locking thread. The opposite threads ensure that the installation of the valve body will not cause the end cover to loosen after the end cover is installed, thereby improving stability.

[0014] In a preferred embodiment of the present invention, the barrier plate is provided with an installation groove, which is engaged with the gas-injecting rubber sealing gasket. When the external air pressure is greater than the internal air pressure, the gas-injecting rubber sealing gasket is squeezed and deformed, thus completing the gas injection operation. When the external air pressure is less than the internal air pressure, the gas-exhausting rubber sealing gasket is squeezed and deformed, thus completing the gas exhaust operation. When the air pressure difference is insufficient to overcome the deformation of the gas-injecting rubber sealing gasket and the gas-exhausting rubber sealing gasket, the gas is stored in the passage to prevent humid air from entering the battery pack.

[0015] In a preferred embodiment of the present invention, the barrier sleeve is provided with a guide hole, which is movably connected to the insert sleeve, and a cross connecting frame is installed inside the insert sleeve. The cross connecting frame is connected to the energy storage sleeve, and the outer protrusion is provided in the gap between the cross connecting frame and the energy storage sleeve, and the outer protrusion is stuck at the bottom of the guide hole.

[0016] In a preferred embodiment of the present invention, a rubber sleeve is installed inside the insert, a platform is installed on the side wall of the power storage sleeve, the top of the platform is connected to the rubber sleeve, and the side wall of the rubber sleeve is connected to the outer protrusion. The insert, the rubber sleeve, the outer protrusion and the power storage sleeve form a sealed chamber.

[0017] In a preferred embodiment of the present invention, push plates are installed at both ends of the piston, and locking bolts are rotatably installed on the push plates. The sidewall of the locking bolt is screwed into the sidewall of the accumulator sleeve, and an external hexagonal connecting block is installed at the end of the locking bolt.

[0018] In a preferred embodiment of the present invention, a plug rod is movably disposed through the cross connecting frame, a limiting plate is installed on the top of the plug rod to prevent the plug rod from separating from the cross connecting frame, the bottom of the plug rod is mounted on the piston, and a storage spring is sleeved on the plug rod. One end of the storage spring is engaged with the cross connecting frame, and the other end of the storage spring is engaged with the piston.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] When the air pressure difference is small, this invention forms a double moisture barrier with the closed static air pressure layer and the waterproof and breathable membrane in the passage, cutting off the gas exchange path between the external humid air and the gas inside the equipment, and preventing trace moisture penetration. At the same time, the air-injecting rubber sealing gasket and the exhaust rubber sealing gasket are tightly fitted with the slot and the through hole respectively when not in operation, blocking the reverse flow of gas and the infiltration of unfiltered humid air, further enhancing the moisture barrier effect. Driven by the air pressure difference, when the external air pressure is high, the air-injecting rubber sealing gasket deforms and opens the through hole to achieve air injection; when the internal air pressure is high, the exhaust rubber sealing gasket deforms and opens the through hole to complete the exhaust, automatically realizing the directional flow of gas. Furthermore, during the installation of the plug sleeve, pressing the outer protrusion for initial positioning, and pushing the piston to move, increases the internal pressure of the plug sleeve, forming a reverse support for the outer protrusion, preventing it from loosening and ensuring the long-term stability of the structure.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 A three-dimensional diagram of a waterproof and breathable valve with a structure that enhances moisture resistance;

[0024] Figure 2 A partial cross-sectional view of a waterproof and breathable valve with a structure that enhances moisture barrier capabilities;

[0025] Figure 3 A bottom view of the cover plate of a waterproof and breathable valve with an enhanced moisture-barrier structure;

[0026] Figure 4 A top view of the valve body of a waterproof and breathable valve with an enhanced moisture-proof structure;

[0027] Figure 5A cross-sectional view of a waterproof and breathable valve with a structure that enhances moisture resistance;

[0028] Figure 6 This is a waterproof and breathable valve with an enhanced moisture-barrier structure. Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 A cross-sectional view of the insert of a waterproof and breathable valve with an enhanced moisture-barrier structure;

[0030] Figure 8 This is a waterproof and breathable valve with an enhanced moisture-barrier structure. Figure 7 Enlarged view of section B in the middle.

[0031] In the picture:

[0032] 1. Valve body; 11. Boss; 111. Inner groove; 112. Waterproof and breathable membrane; 113. Passage; 12. Sealing gasket groove; 13. Clip hole; 131. Channel; 14. Cover plate; 141. Elastic hook; 142. Arc-shaped surface; 143. Reinforcing rib; 15. Locking thread;

[0033] 2. End cap; 21. Connecting sleeve; 211. Connecting thread; 22. Barrier plate; 221. Through hole; 23. Air-filling rubber gasket; 231. Mounting groove; 232. Slot; 24. Barrier sleeve; 241. Through hole; 242. Exhaust rubber gasket; 25. Insert sleeve; 251. Energy storage sleeve; 252. Guide hole; 253. Rubber sleeve; 254. Cross connector; 255. Outer protrusion; 256. Platform;

[0034] 3. Push plate; 31. Piston; 311. Locking bolt; 32. Insert rod; 321. Storage spring; 322. Limit plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0036] Example 1:

[0037] like Figures 1 to 8 As shown, a waterproof and breathable valve with an enhanced moisture barrier structure includes a valve body 1 and a waterproof and breathable membrane 112 installed on the valve body 1.

[0038] An end cap 2 is screwed onto the bottom of the valve body 1. A baffle plate 22 is installed on the end cap 2. A through hole 221 is opened on the baffle plate 22. An air-filling rubber sealing gasket 23 is snapped onto the side wall of the baffle plate 22. One end of the air-filling rubber sealing gasket 23 overlaps in the slot 232 opened inside the valve body 1. The air-filling rubber sealing gasket 23 is used for one-way gas flow.

[0039] A barrier sleeve 24 is installed on the barrier plate 22. A through hole 241 is provided on the barrier sleeve 24. An exhaust rubber sealing gasket 242 is overlapped above the through hole 241. The exhaust rubber sealing gasket 242 is used for one-way gas flow. A plug sleeve 25 and a storage sleeve 251 are installed at the bottom of the exhaust rubber sealing gasket 242. The plug sleeve 25 is movably plugged into the barrier sleeve 24. An external protrusion 255 is provided at the connection between the plug sleeve 25 and the storage sleeve 251. The external protrusion 255 is snapped into the bottom of the barrier sleeve 24.

[0040] A piston 31 is slidably installed inside the accumulator sleeve 251. During the sliding process of the piston 31, the internal space of the insert sleeve 25 is compressed, and the stability of the outer protrusion 255 is ensured by increasing the air pressure. One-way gas flow is achieved through the valve body 1, end cover 2, baffle plate 22, air supply rubber sealing gasket 23, and exhaust rubber sealing gasket 242. In combination with the cooperation of the insert sleeve 25, accumulator sleeve 251, outer protrusion 255, and piston 31, the piston 31 compresses the space to increase the air pressure, ensuring the stable engagement of the outer protrusion 255 and improving the reliability of the overall structure.

[0041] like Figures 1 to 8 As shown in the specific embodiment, a boss 11 is provided at the center of the valve body 1. An inner groove 111 is formed inside the boss 11, and a waterproof and breathable membrane 112 is connected inside the inner groove 111. The bottom of the waterproof and breathable membrane 112 is connected to a passage 113 inside the valve body 1. Several pairs of locking holes 13 are provided on the valve body 1, and these locking holes 13 are connected to channels 131 provided on the valve body 1. The locking holes 13, channels 131, waterproof and breathable membrane 112, and passage 113 are interconnected. The boss 11 and inner groove 111 ensure stable installation of the waterproof and breathable membrane 112. The locking holes 13, channels 131, passage 113, and waterproof and breathable membrane 112 form a complete gas flow path, ensuring both ventilation and moisture interception by the waterproof and breathable membrane 112, thus keeping the inside of the equipment dry.

[0042] like Figures 1 to 8As shown, a cover plate 14 is further installed on the valve body 1. An elastic hook 141 is installed at the bottom of the cover plate 14, and the bottom of the elastic hook 141 engages with the top of the locking hole 13. The bottom of the cover plate 14 overlaps at the end of the valve body 1. An arc-shaped surface 142 is provided on the valve body 1 to guide the elastic hook 141 to deform, thereby engaging the elastic hook 141 with the locking hole 13. Several pairs of reinforcing ribs 143 are provided at the bottom of the cover plate 14. The cover plate 14 quickly engages with the locking hole 13 via the elastic hook 141. The arc-shaped surface 142 assists in the deformation of the elastic hook 141 for easy installation, and the reinforcing ribs 143 enhance the structural strength of the cover plate 14, achieving a stable installation and protective function for the cover plate 14.

[0043] like Figures 1 to 8 As shown, furthermore, a sealing gasket groove 12 is provided at the bottom of the valve body 1. The sealing gasket groove 12 is used to position the sealing gasket. A locking thread 15 is installed on the valve body 1, which is used to connect with the battery pack. The sealing gasket groove 12 ensures accurate positioning of the sealing gasket and improves the sealing performance between the valve body 1 and the external connection; the locking thread 15 achieves a stable connection between the valve body 1 and the battery pack, which facilitates installation and fixation and enhances the overall assembly reliability.

[0044] Example 2:

[0045] The difference between the above embodiments and this embodiment is that: Figures 1 to 8 As shown, a connecting sleeve 21 is installed on the side wall of the end cover 2. The connecting sleeve 21 is inserted into the bottom of the valve body 1, and a connecting thread 211 is provided on the side wall of the connecting sleeve 21. The connecting thread 211 is used to screw into the valve body 1, and the direction of rotation of the connecting thread 211 is opposite to that of the locking thread 15. The opposite thread ensures that the installation of the valve body 1 will not cause the end cover 2 to loosen after the end cover 2 is installed, thus improving stability. The connecting sleeve 21 and the connecting thread 211 achieve a tight connection between the end cover 2 and the valve body 1, and the opposite rotation direction to the locking thread 15 prevents the end cover 2 from loosening during the installation of the valve body 1, significantly improving the installation stability of the overall structure.

[0046] like Figures 1 to 8As shown, in a specific embodiment, the barrier plate 22 is equipped with an installation groove 231, which engages with the gas-replenishing rubber sealing gasket 23. When the external air pressure is greater than the internal air pressure, the gas-replenishing rubber sealing gasket 23 deforms, completing the gas-replenishing operation. When the external air pressure is less than the internal air pressure, the gas-exhausting rubber sealing gasket 242 deforms, completing the gas-exhausting operation. When the pressure difference is insufficient to overcome the deformation of the gas-replenishing rubber sealing gasket 23 and the gas-exhausting rubber sealing gasket 242, the gas is stored in the passage 113 to prevent humid air from entering the battery pack. The installation groove 231 ensures reliable positioning of the gas-replenishing rubber sealing gasket 23. Gas replenishment and exhaust are achieved through the pressure difference response between the gas-replenishing rubber sealing gasket 23 and the gas-exhausting rubber sealing gasket 242. When the pressure difference is insufficient, the gas stored in the passage 113 blocks moisture from entering, enhancing the moisture barrier capability.

[0047] like Figures 1 to 8 As shown, the barrier sleeve 24 further includes a guide hole 252 that movably passes through the insert sleeve 25. A cross-shaped connecting bracket 254 is installed inside the insert sleeve 25, connecting to the energy storage sleeve 251. An outer protrusion 255 is positioned in the gap between the cross-shaped connecting bracket 254 and the energy storage sleeve 251, and is secured at the bottom of the guide hole 252. The guide hole 252 provides a guide for the insert sleeve 25's movement, the cross-shaped connecting bracket 254 enhances the connection strength between the insert sleeve 25 and the energy storage sleeve 251, and the outer protrusion 255 secures at the bottom of the guide hole 252, ensuring the stability of the connection between the insert sleeve 25 and the barrier sleeve 24.

[0048] like Figures 1 to 8 As shown, furthermore, a rubber sleeve 253 is installed inside the insert 25, and a platform 256 is installed on the side wall of the accumulator sleeve 251. The top of the platform 256 is connected to the rubber sleeve 253, and the side wall of the rubber sleeve 253 is connected to the outer protrusion 255. The insert 25, the rubber sleeve 253, the outer protrusion 255, and the accumulator sleeve 251 form a sealed chamber. The rubber sleeve 253 cooperates with the platform 256 to form a sealed chamber with the insert 25, the accumulator sleeve 251, and the outer protrusion 255, enhancing the stability of air pressure regulation and ensuring the air pressure support effect when the piston 31 is compressed.

[0049] Example 3:

[0050] The difference between the above embodiments and this embodiment is that: Figures 1 to 8 As shown, push plates 3 are installed at both ends of piston 31. Locking bolts 311 are rotatably installed on push plates 3. The side wall of locking bolt 311 is screwed into the side wall of accumulator sleeve 251, and an external hexagonal connecting block is installed at the end of locking bolt 311. Push plates 3 and locking bolts 311 drive push plates 3 to move through threaded transmission, realizing precise adjustment of piston 31. The external hexagonal connecting block is easy to operate, ensuring convenient and reliable adjustment of air pressure inside sleeve 25.

[0051] like Figures 1 to 8 As shown in the specific embodiment, a rod 32 is movably inserted through the cross-shaped connecting frame 254. A limiting plate 322 is installed on the top of the rod 32 to prevent the rod 32 from separating from the cross-shaped connecting frame 254. The bottom of the rod 32 is installed on the piston 31. A storage spring 321 is sleeved on the rod 32. One end of the storage spring 321 is engaged with the cross-shaped connecting frame 254, and the other end is engaged with the piston 31. The rod 32 and the limiting plate 322 ensure a stable connection between the piston 31 and the cross-shaped connecting frame 254. The storage spring 321 provides a restoring force for the piston 31, enhancing the dynamic response capability of the structure and ensuring the timeliness of air pressure regulation.

[0052] The implementation principle of a waterproof and breathable valve with an enhanced moisture-barrier structure according to the present invention is as follows:

[0053] This waterproof and breathable valve is driven by air pressure difference. It achieves directional gas flow through the dynamic response of one-way sealing components, and combined with multi-layer moisture-proof design to ensure a dry and stable internal environment. All components work together to form a complete breathable-moisture-proof system.

[0054] When the external ambient air pressure is higher than the internal air pressure of the equipment, the air replenishment process begins: the pressure difference acts on the air replenishment rubber sealing gasket 23, causing it to deform and sink downwards towards the inside of the valve body 1 (on the equipment side), resulting in a gap in the area that was originally tightly fitted with the groove 232 inside the valve body 1. This gap opens the through hole 221 on the barrier plate 22, allowing external gas to first pass through the channel 131, the waterproof and breathable membrane 112, and finally replenish the internal air through the through hole 221. Under the continuous pressure, the gas passes through the waterproof and breathable membrane 112 (at this time, the membrane plays a core moisture-blocking role, allowing only dry gas molecules to pass through while intercepting moisture, liquid water, and tiny water droplets).

[0055] When the external air pressure is lower than the internal air pressure, the air-replenishing rubber sealing gasket 23 resets under its own elasticity, tightly fits the through hole 221 and re-overlaps tightly with the slot 232, and the gap is completely closed, thereby blocking the internal gas from leaking back through the through hole 221, while preventing unfiltered humid air from seeping in.

[0056] The exhaust process is triggered when the internal air pressure is higher than the external air pressure: Gas accumulates inside the equipment, creating a pressure higher than the external pressure. This gas enters the through-hole 241 and acts directly on the exhaust rubber gasket 242. Because the internal air pressure is greater than the external air pressure, the gas pressure pushes the exhaust rubber gasket 242, which was originally covering the through-hole 241 of the barrier sleeve 24, outward (away from the equipment). This deformation creates a gap at the overlap between the exhaust rubber gasket 242 and the through-hole 241, thus opening the through-hole 241. The internal gas then directly exits through this open through-hole 241, passage 113, waterproof and breathable membrane 112, and channel 131. This gradually reduces the internal air pressure, achieving a balance between the internal and external air pressures.

[0057] When the internal air pressure of the equipment is lower than that of the outside, the exhaust rubber sealing gasket 242 deforms and resets itself and tightly covers the through hole 241. At this time, the gap between the sealing gasket and the through hole 241 disappears, effectively blocking the external gas from directly entering the equipment through the through hole 241. This ensures that all gas entering the equipment must first be filtered by the waterproof and breathable membrane 112 to prevent untreated humid air from seeping in.

[0058] When the pressure difference between the external and internal gases is insufficient to deform the exhaust rubber seal 242 and the replenishing rubber seal 23, a closed static pressure layer is formed within the passage 113. This pressure layer maintains a tight fit between the replenishing rubber seal 23 and the slot 232, and between the exhaust rubber seal 242 and the through hole 241, ensuring that the two one-way sealing components are in a closed state. Furthermore, this closed state cuts off the gas exchange path between the external humid air and the internal gas of the equipment, preventing the penetration of trace amounts of moisture due to small pressure fluctuations. Together with the waterproof and breathable membrane 112, it forms a double moisture barrier, thereby continuously and stably enhancing the moisture barrier capability of the entire waterproof and breathable valve.

[0059] During the installation of the sleeve 25, pressing the outer protrusion 255 causes it to deform and indent, allowing the sleeve 25 to be installed in the guide hole 252. The operator then rotates the locking bolt 311, which gradually screws in along its threaded structure, causing the push plate 3 to move axially. The push plate 3, in turn, pushes the piston 31 to move synchronously. This operation utilizes the characteristics of threaded transmission, converting the rotational motion of the locking bolt 311 into linear motion of the push plate 3 and piston 31. The movement of the piston 31 compresses the internal space of the sleeve 25, increasing the internal pressure. This increased internal pressure creates a reverse supporting force on the outer protrusion 255 from the inside of the sleeve 25, thus preventing potential deformation of the outer protrusion 255 during use and avoiding loosening of the sleeve 25. The advantage of this is that it further enhances the stability of the sleeve 25 installation, fundamentally eliminating the displacement problem of the sleeve 25 caused by the deformation of the outer protrusion 255, ensuring that it can play a stable role in the overall operation of the waterproof and breathable valve for a long time, maintaining the integrity and reliability of the entire device structure, and thus ensuring the stable realization of the moisture-proof and breathable functions of the waterproof and breathable valve.

Claims

1. A waterproof and breathable valve with an enhanced moisture-proof structure, comprising a valve body (1) and a waterproof and breathable membrane (112) mounted on the valve body (1), characterized in that: The valve body (1) is screwed with an end cap (2) at the bottom. A baffle plate (22) is installed on the end cap (2). A through hole (221) is opened on the baffle plate (22). A gas-filling rubber sealing gasket (23) is snapped onto the side wall of the baffle plate (22). One end of the gas-filling rubber sealing gasket (23) overlaps in the slot (232) opened inside the valve body (1). The gas-filling rubber sealing gasket (23) is used to unidirectionally vent gas. A barrier sleeve (24) is installed on the barrier plate (22). A through hole (241) is provided on the barrier sleeve (24). An exhaust rubber sealing gasket (242) is overlapped above the through hole (241). The exhaust rubber sealing gasket (242) is used to unidirectionally vent gas. A plug sleeve (25) and a power storage sleeve (251) are installed at the bottom of the exhaust rubber sealing gasket (242). The plug sleeve (25) is movably plugged into the barrier sleeve (24). An external protrusion (255) is provided at the connection between the plug sleeve (25) and the power storage sleeve (251). The external protrusion (255) is snapped into the bottom of the barrier sleeve (24). A piston (31) is slidably arranged inside the power storage sleeve (251). During the sliding process of the piston (31), the internal space of the insert (25) is compressed, and the stability of the outer protrusion (255) is ensured by increasing the air pressure. The insert (25) is equipped with a rubber sleeve (253), and the side wall of the energy storage sleeve (251) is equipped with a platform (256). The top of the platform (256) is connected to the rubber sleeve (253), and the side wall of the rubber sleeve (253) is connected to the outer protrusion (255). The insert (25), the rubber sleeve (253), the outer protrusion (255) and the energy storage sleeve (251) form a sealed chamber. The piston (31) has push plates (3) installed at both ends. A locking bolt (311) is rotatably installed on the push plate (3). The side wall of the locking bolt (311) is screwed into the side wall of the power storage sleeve (251), and an external hexagonal connecting block is installed at the end of the locking bolt (311).

2. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 1, characterized in that, The valve body (1) has a boss (11) at its center. The boss (11) has an inner groove (111) inside. The inner groove (111) is connected to a waterproof and breathable membrane (112). The bottom of the waterproof and breathable membrane (112) is connected to the valve body (1) through a passage (113). The valve body (1) has several pairs of locking holes (13). The locking holes (13) are connected to the channels (131) on the valve body (1). The locking holes (13), channels (131), waterproof and breathable membrane (112) and passage (113) are connected to each other.

3. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 1, characterized in that, A cover plate (14) is installed on the valve body (1). An elastic hook (141) is installed at the bottom of the cover plate (14). The bottom of the elastic hook (141) is engaged with the top of the locking hole (13). The bottom of the cover plate (14) is overlapped at the end of the valve body (1). An arc-shaped surface (142) is provided on the valve body (1). The arc-shaped surface (142) is used to guide the elastic hook (141) to deform, so that the elastic hook (141) is engaged with the locking hole (13). Several pairs of reinforcing ribs (143) are provided at the bottom of the cover plate (14).

4. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 1, characterized in that, The valve body (1) has a sealing gasket groove (12) at the bottom, which is used to position the sealing gasket. The valve body (1) is equipped with a locking thread (15), which is used to connect with the battery pack.

5. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 2, characterized in that, The end cap (2) is fitted with a connecting sleeve (21) on its side wall. The connecting sleeve (21) is inserted into the bottom of the valve body (1). The connecting sleeve (21) has a connecting thread (211) on its side wall. The connecting thread (211) is used to screw into the valve body (1). The direction of rotation of the connecting thread (211) is opposite to that of the locking thread (15). The opposite thread ensures that the installation of the valve body (1) will not cause the end cap (2) to loosen after the end cap (2) is installed, thus improving stability.

6. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 1, characterized in that, The barrier plate (22) is equipped with an installation groove (231), which is engaged with the gas-filling rubber sealing gasket (23). When the external air pressure is greater than the internal air pressure, the gas-filling rubber sealing gasket (23) is squeezed and deformed to complete the gas filling operation. When the external air pressure is less than the internal air pressure, the gas-exhausting rubber sealing gasket (242) is squeezed and deformed to complete the gas exhaust operation. When the air pressure difference is insufficient to overcome the deformation of the gas-filling rubber sealing gasket (23) and the gas-exhausting rubber sealing gasket (242), the gas is stored in the passage (113) to prevent humid air from entering the battery pack.

7. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 1, characterized in that, The barrier sleeve (24) has a guide hole (252) that is movably connected to the insert sleeve (25). A cross connector (254) is installed inside the insert sleeve (25). The cross connector (254) is connected to the power storage sleeve (251). The outer protrusion (255) is located in the gap between the cross connector (254) and the power storage sleeve (251). The outer protrusion (255) is stuck at the bottom of the guide hole (252).

8. A waterproof and breathable valve with an enhanced moisture-barrier structure according to claim 7, characterized in that, A rod (32) is movably disposed through the cross connector (254). A limiting plate (322) is installed on the top of the rod (32). The limiting plate (322) is used to prevent the rod (32) from separating from the cross connector (254). The bottom of the rod (32) is installed on the piston (31).

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