Pressure release valve

Abstract

The utility model provides a pressure release valve. The pressure release valve is used for being connected to the first piece. The pressure relief valve includes a base, a base seal, a cap, and a cap seal. The base seal is disposed on the base and configured to abut the first piece in a connected state. The cover is movable relative to the base. The cover seal is disposed on the cover and configured to abut the first piece in a closed state of the cover. The pressure release valve has the advantages of being long in sealing life and good in sealing performance.

Description

Technical Field

[0001] This application relates to the field of pressure relief valves. Background Technology

[0002] The pressure relief valve has a pressure relief passage. Rainwater and dusty gases can easily enter the pressure relief valve through this passage. Utility Model Content

[0003] Exemplary embodiments of this application can solve at least some of the above-mentioned problems.

[0004] This application provides a pressure relief valve. The pressure relief valve is for connection to a first component. The pressure relief valve includes a base, a base seal, a cover, and a cover seal. The base seal is disposed on the base and configured to abut against the first component. The cover is movable relative to the base. The cover seal is disposed on the cover and configured to abut against the first component.

[0005] According to the pressure relief valve, the cover is movable relative to the base and has a closed position. The pressure relief valve is configured such that when the cover is in the closed position, both the base seal and the cover seal abut against the first element.

[0006] According to the pressure relief valve, the first component includes a first plate and a second plate arranged at an angle. The base seal is configured to abut against the first plate when the cover is in the closed position. The cover seal is configured to abut against the second plate.

[0007] According to the pressure relief valve, the cover seal includes a cover seal root and a cover seal first leg, the first leg of which is connected to the cover seal root. The cover seal root is connected to the cover. The cover seal first leg is configured to abut against the second plate when the cover is in the closed position.

[0008] According to the pressure relief valve, the cover seal is further configured to abut against the first plate when the cover is in the closed position.

[0009] According to the pressure relief valve, the cover seal further includes a second leg, which is connected to the root of the cover seal. The second leg is configured to abut against the first plate when the cover is in the closed position.

[0010] According to the pressure relief valve, the base seal includes a base seal root, a base seal first leg, and a base seal second leg, both of which are connected to the base seal root. The base seal root is connected to the base. The base seal first leg and the base seal second leg are configured to abut against the first plate.

[0011] According to the pressure relief valve, the pressure relief valve further includes a vane. The base has a base through-hole, and the vane is located between the base and the cover, covering the base through-hole. The vane is movable relative to the base, thereby opening or closing the base through-hole.

[0012] According to the pressure relief valve, the pressure relief valve further includes an actuator disposed on the base and configured to drive the cover to move relative to the base.

[0013] According to the pressure relief valve, the first component has a mounting through hole. The base is disposed in the mounting through hole and connected to the first component.

[0014] The pressure relief valve of this application has a long sealing life. Specifically, the cover seal of the pressure relief valve is configured to abut against a first piece. The first piece is only subjected to the force exerted on it by the cover seal when the cover is in the closed position, therefore the first piece is not easily deformed. On the other hand, as an application scenario, when the pressure relief valve is installed in a vehicle, the first piece is made of metal and the base is made of plastic. The strength of the first piece is higher than that of the base, therefore the first piece is less prone to deformation. Thus, when the cover is in the closed position, the cover seal can remain against the first piece, thereby forming a good seal and achieving a long sealing life.

[0015] Furthermore, the pressure relief valve of this application provides a double seal, thereby ensuring the sealing performance between the pressure relief valve and the first component in the closed position. Specifically, both the cover seal and the base seal of the pressure relief valve of this application can abut against the first component to achieve a seal. In addition, the cover seal abuts against the second plate of the first component, and the base seal abuts against the first plate of the first component, thereby abutting against the first component from two directions to improve the sealing performance.

[0016] Furthermore, the base seal in the pressure relief valve of this application has a longer service life. Specifically, because the pressure relief valve can achieve a double seal, the base seal is exposed to the outside for a shorter period of time, thus extending its service life. As an application scenario, the pressure relief valve can be installed on a vehicle, positioned at a low position. When the vehicle is submerged in water, the cover of the pressure relief valve is in the closed position, preventing external water from entering the vehicle through the valve. Thus, the cover seal protects the base seal from water exposure, thereby extending its service life. On the other hand, since the base seal is not submerged in water, it only needs to achieve an air seal between the base and the first component, without requiring a liquid seal (e.g., a water seal). Attached Figure Description

[0017] The features and advantages of this application can be better understood by reading the following detailed description with reference to the accompanying drawings, in which the same reference numerals denote the same parts, wherein:

[0018] Figure 1 This is a perspective view of the pressure relief valve and the first component of this application;

[0019] Figure 2 yes Figure 1 An exploded view of the pressure relief valve shown.

[0020] Figure 3 yes Figure 1 The pressure relief valve shown is in a cross-sectional view with the cover in the closed position;

[0021] Figure 4 yes Figure 1 The pressure relief valve shown is installed on the first piece, with the cover in the closed position (sectional view).

[0022] Figure 5 yes Figure 1 The pressure relief valve shown is installed on the first piece, with the cover in the open position, in a cross-sectional view. Detailed Implementation

[0023] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that in the following drawings, the same components are referred to by the same reference numerals.

[0024] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although terms indicating direction, such as "upper," "lower," "left," "right," "inner," and "outer," are used herein to describe various exemplary structural portions and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed herein can be arranged in different orientations, these terms indicating direction are illustrative only and should not be considered limiting.

[0025] Figure 1 This is a perspective view of the pressure relief valve 120 and the first component 100 of this application. Figure 1 As shown, a pressure relief valve 120 can be installed on the first component 100. The pressure relief valve 120 can be opened or closed.

[0026] like Figure 1 As shown, the first component 100 has a mounting through hole 102 for receiving the pressure relief valve 120. The mounting through hole 102 extends through the first component 100 along a first direction (e.g., left-right direction). The first component 100 includes a first plate 104 and a second plate 106 arranged at an angle. Both the first plate 104 and the second plate 106 surround the mounting through hole 102. Specifically, the extension direction of the first plate 104 is substantially perpendicular to the first direction. The extension direction of the second plate 106 is arranged along the first direction. The first plate 104 and the second plate 106 are connected.

[0027] As an example, the first piece 100 is the exterior sheet metal of the vehicle. A pressure relief valve 120 is mounted on the first piece 100 and configured to open when the air pressure inside the vehicle is higher than a predetermined value, thereby allowing gas inside the vehicle to be discharged through the pressure relief valve 120.

[0028] Figure 2 yes Figure 1 An exploded view of the pressure relief valve 120 is shown. Figure 2 As shown, the pressure relief valve 120 includes a base 202, a base seal 204, a cover 206, a cover seal 208, an actuator 210, twelve blades 234, a snap-fit ​​236, and two supports 241. The pressure relief valve 120 is connected to the first component 100 via the base 202. Specifically, the base 202 is disposed in the mounting through hole 102 and abuts against the edge of the mounting through hole 102, thereby connecting the base 202 to the first component 100.

[0029] like Figure 2As shown, the base 202 has thirty-six base through holes 232. The base through holes 232 extend through the base 202 along a first direction (e.g., left-right direction). In this application, the thirty-six base through holes 232 are arranged in six rows of six along the height direction. Twelve blades 234 are disposed on the base 202, located between the base 202 and the cover 206, and cover the base through holes 232. The twelve blades 234 are movable relative to the base 202, thereby opening or closing the base through holes 232. Specifically, the twelve blades 234 are disposed on the right side of the base 202. One blade 234 corresponds to three base through holes 232, so that the movement of each blade 234 can open or close three base through holes 232. Each blade includes a sound-absorbing layer 241 and a shielding layer 242. Specifically, the sound-absorbing layer 241 and the shielding layer 242 are substantially the same in shape and connected to each other. The sound-absorbing layer 241 is configured to contact the base 202. As an example, the sound-absorbing layer 241 is made of a relatively soft material such as non-woven fabric to prevent noise when the blade 234 collides with the base 202. When the pressure on the left side of the blade 234 is greater than the pressure on the right side (e.g., the air pressure inside the vehicle is higher than a predetermined value), the gas blows the blade 234 up, causing it to move relative to the base 202 to open the base through-hole 232. When the pressure on the left side of the blade 234 is not greater than the pressure on the right side (e.g., the air pressure inside the vehicle is not higher than a predetermined value), the blade 234, under the influence of gravity, adheres to and blocks the base through-hole 232, thereby closing the base through-hole 232 and disconnecting the gas supply to both sides of the pressure relief valve 120.

[0030] It should be noted that although the base 202 in this application is provided with a specific number of base through holes 232 and blades 234, at least one base through hole 232 and at least one blade 234 are within the protection scope of this application.

[0031] Furthermore, although this application shows a specific correspondence between the base through holes 232 and the blades 234 (for example, three base through holes 232 are correspondingly set with one blade 234), any number of base through holes 232 and blades 234 correspondences are within the protection scope of this application.

[0032] like Figure 2As shown, the base 202 is provided with an execution through hole 233. The execution through hole 233 extends through the base 202 in a first direction (e.g., left-right direction). In this application, the execution through hole 233 is located at the center of the base 202. An actuator is disposed on the base 202, and at least a portion of the actuator 210 can pass through the execution through hole 233 and be connected to the cover 206. Specifically, the actuator 210 includes an actuator body 211 and a moving member 212. The moving member 212 is connected to the actuator body 211 and is movable relative to the actuator body 211 in the first direction. The actuator body 211 is connected to the base 202. The moving member 212 passes through the execution through hole 233 and is connected to the cover 206, thereby causing the cover 206 to move relative to the base 202. As an example, the actuator body 211 and the base 202 are connected by screws. The actuator 210 is a motor. In this application, the cover 206 and the moving member 212 are connected by a snap-fit ​​236. The snap-fit ​​236 is connected to the cover 206 via a snap-fit ​​structure and to the movable part 212 via screws.

[0033] It should be noted that although in this application the cover 206 is connected to the movable part 212 by the snap fastener 236, in other embodiments the cover 206 can be connected to the movable part 212 in any way.

[0034] like Figure 2 As shown, the base 202 is provided with two supports 241. The two supports 241 are arranged on both sides of the execution through-hole 233 along the width direction of the base 202, thereby increasing the rigidity of the base 202 in the width direction without affecting the channel area (i.e., the area of ​​the thirty-six base through-holes 232) to prevent deformation of the base 202. Specifically, the base 202 is provided with two abutment plates 251. The two abutment plates 251 are located on both sides of the execution through-hole 233. The abutment plates 251 extend beyond the blade 234 in the first direction and toward the cover 206, so that when the blade 234 is mounted on the base 202, one side of the support 241 can abut against the abutment plate 251, and one side of the support 241 can abut against the side of the base 202. As an example, the base 202 and the supports 241 are made of plastic.

[0035] like Figure 2 As shown, a base seal 204 is disposed on a base 202 and configured to abut against the first member 100. Specifically, the base seal 204 is generally annular and is fitted onto the base 202. As an example, the base seal 204 is made of a thermoplastic elastomer (e.g., rubber).

[0036] like Figure 2As shown, the cover 206 is disposed on one side (e.g., the right side) of the base 202 and is movable relative to the base 202. The cover 206 includes a cover body 222 and a cover side portion 224. The cover body 222 is generally plate-shaped. The cover side portion 224 is connected to the cover body 222 and extends from the outer edge of the cover body 222 toward the base 202 (i.e., to the left) along a first direction. The cover 206 is movable relative to the base 202 along the first direction by the movement member 212. Specifically, the size of the cover body 222 is slightly larger than the size of the base 202, so that the cover side portion 224 can cover the outer edge of the base 202.

[0037] like Figure 2 As shown, a cover seal 208 is disposed on the cover 206 and configured to abut against the first member 100. Specifically, the cover seal 208 is generally annular and fits over the cover side 224. As an example, the cover seal 208 is made of a thermoplastic elastomer (e.g., rubber).

[0038] Figure 3 yes Figure 1 The diagram shows a cross-sectional view of the pressure relief valve 120, with the cover 206 in the closed position. (See diagram for reference.) Figure 3 As shown, the cover seal 208 includes a cover seal root 301, a cover seal first leg 302, and a cover seal second leg 304. The cover seal root 301 is connected to the cover 206. The cover seal first leg 302 is connected to the cover seal root 301 and is configured to abut against the second plate 106. The cover seal second leg 304 is connected to the cover seal root 301 and is configured to abut against the first plate 104. When the cover 206 is in the closed position, the cover body 222 and the base through hole 232 are located on opposite sides of the blade 234, and the cover side 224 is outside the base 202 and surrounds the base 202.

[0039] like Figure 3 As shown, the base seal 204 includes a base seal root 311, a base seal first leg 312, and a base seal second leg 314. The base seal root 311 is connected to the base 202. The base seal first leg 312 is connected to the base seal root 311 and configured to abut against the first plate 104. The base seal second leg 314 is located inside the base seal first leg 312. The base seal second leg 314 is connected to the base seal root 311 and configured to abut against the first plate 104. When the cover 206 is in the closed position, the cover seal second leg 304 is outside and surrounds the base seal first leg 312 and base seal second leg 314.

[0040] Figure 4 yes Figure 1The pressure relief valve 120 shown is mounted on the first piece 100, with the cover 206 in the closed position, in a cross-sectional view. Figure 4 As shown, when the pressure relief valve 120 is installed on the first piece 100, the base 202 of the pressure relief valve 120 is disposed in the mounting through hole 102 of the first piece 100 and connected to the first piece 100, thereby assembling it onto the first piece 100. When the pressure relief valve 120 is installed on the first piece 100, the base seal 204 of the pressure relief valve 120 abuts against the first plate 104, thereby achieving a seal between the base 202 of the pressure relief valve 120 and the first piece 100, preventing liquid and gas on the right side of the first piece 100 from entering the pressure relief valve 120 through the mounting through hole 102. Specifically, when the pressure relief valve 120 is installed on the first piece 100, both the first leg 312 and the second leg 314 of the base seal abut against the right surface of the first plate 104 of the first piece 100.

[0041] like Figure 4 As shown, when the pressure relief valve 120 is installed on the first piece 100 and the cover 206 is in the closed position, the first leg 302 of the cover seal 208 of the pressure relief valve 120 abuts against the first plate 104, thereby achieving a seal between the cover 206 of the pressure relief valve 120 and the first piece 100. Furthermore, when the pressure relief valve 120 is installed on the first piece 100 and the cover 206 is in the closed position, the second leg 304 of the cover seal 208 of the pressure relief valve 120 abuts against the second plate 106, thereby achieving a seal between the cover 206 of the pressure relief valve 120 and the first piece 100. Specifically, when the pressure relief valve 120 is installed on the first piece 100, the first leg 302 of the cover seal abuts against the right surface of the first plate 104, and the second leg 304 of the cover seal abuts against the inner surface of the second plate 106.

[0042] Figure 5 yes Figure 1 The pressure relief valve 120 shown is mounted on the first piece 100, and the cover 206 is in the open position in a cross-sectional view. Figure 5 As shown, the moving part 212 of the actuator 210 can drive the cover 206 away from the base 202 in a first direction, thereby moving it from the closed position to the open position. The cover 206 is in the open position when it is a certain distance (e.g., a predetermined distance) from the base 202. In other words, the cover 206 is in the open position when it is a certain distance (e.g., a predetermined distance) from the first piece 100. At this time, the cover body 222 and the cover side 224 are on the same side of the base 202, and fluid (e.g., gas) can be discharged through the space between the cover 206 and the first piece 100 to the pressure relief valve 120.

[0043] The following is for reference. Figure 4 and Figure 5To describe the pressure relief process of pressure relief valve 120:

[0044] When depressurization is required (e.g., when the air pressure inside the vehicle exceeds a predetermined value), actuator 210 drives cover 206 from a closed position to an open position. The space between cover 206 and first piece 100 is open to the atmosphere. Because the air pressure inside the vehicle is higher than the predetermined value, the air pressure on the left side of blade 234 is greater than the air pressure on the right side of blade 234. Blade 234 is blown up by the gas inside the vehicle, thus exposing the base through hole 232. The gas inside the vehicle flows through the base through hole 232 to the space between blade 234 and cover 206, and flows out from the space between cover 206 and first piece 100, thereby completing the depressurization.

[0045] After pressure relief is completed, actuator 210 drives cover 206 from the open position to the closed position. When cover 206 is in the closed position, both cover seal 208 and base seal 204 can abut against the first piece 100, thereby achieving a seal. Thus, when cover 206 is in the closed position, external fluids (e.g., rainwater and dusty gases) cannot enter between cover 206 and the first piece 100 / base 202 through cover seal 208, thereby ensuring the cleanliness of the inside of pressure relief valve 120.

[0046] In existing technologies, pressure relief valves have a relatively short sealing life. The inventors of this application discovered that this is due to the deformation of the base caused by the sealing element fitted onto the cover pressing against it. Specifically, the base is made of plastic. The base is subjected not only to the force exerted on it by the actuator but also to the resistance force from the sealing element on the cover in the closed position. These two forces are in opposite directions, causing the base to deform. Because of this deformation, the sealing element on the cover in the closed position cannot maintain contact with the base, thus affecting the sealing performance.

[0047] The pressure relief valve 120 of this application has a long sealing life. Specifically, the cover seal 208 of the pressure relief valve 120 is configured to abut against the first piece 100. The first piece 100 is only subjected to the force exerted on it by the cover seal 208 when the cover 206 is in the closed position, so the first piece 100 is not easily deformed. On the other hand, as an application scenario, when the pressure relief valve 120 is installed in a vehicle, the first piece 100 is made of metal and the base 202 is made of plastic. The strength of the first piece 100 is higher than that of the base 202, so the first piece 100 is less prone to deformation. Thus, when the cover 206 is in the closed position, the cover seal 208 can remain against the first piece 100, thereby forming a good seal and achieving a long sealing life.

[0048] Furthermore, the pressure relief valve 120 of this application provides a double seal, thereby ensuring the sealing performance between the pressure relief valve 120 and the first component 100 in the closed position. Specifically, both the cover seal 208 and the base seal 204 of the pressure relief valve 120 of this application can abut against the first component 100 to achieve a seal. In addition, the cover seal 208 abuts against the second plate 106 of the first component 100, and the base seal 204 abuts against the first plate 104 of the first component 100, thereby abutting against the first component 100 from two directions to improve the sealing performance.

[0049] Furthermore, the base seal 204 in the pressure relief valve 120 of this application has a longer service life. Specifically, since the pressure relief valve 120 can achieve a double seal, the base seal 204 is exposed to the outside for a shorter period of time, thus extending its service life. As an application scenario, the pressure relief valve 120 can be installed on a vehicle and mounted at a lower position. When the vehicle is submerged in water, the cover 206 of the pressure relief valve 120 is in the closed position, thereby preventing external water from entering the vehicle through the pressure relief valve 120. Thus, the cover seal 208 can protect the base seal 204 from water exposure, thereby extending the service life of the base seal 204. On the other hand, since the base seal is not submerged in water, the base seal only needs to achieve an air seal between the base and the first element, and does not need to achieve a liquid seal (e.g., a water seal).

[0050] Although this disclosure has been described in conjunction with examples of the embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents, whether known or currently or soon to be foreseen, will likely be apparent to those skilled in the art. Furthermore, the technical effects and / or technical problems described herein are exemplary and not limiting; therefore, the disclosures herein may be used to solve other technical problems and have other technical effects and / or can solve other technical problems. Accordingly, the examples of embodiments of this disclosure as set forth above are intended to be illustrative and not limiting. Various changes may be made without departing from the spirit or scope of this disclosure. Therefore, this disclosure is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents.

Claims

1. A pressure relief valve for connection to a first component (100), characterized in that, The pressure relief valve includes: Base (202); A base seal (204) is disposed on the base (202) and configured to abut against the first member (100); A cover (206) movable relative to the base (202); and A cover seal (208) is disposed on the cover (206) and configured to abut against the first member (100).

2. The pressure relief valve according to claim 1, characterized in that: The cover (206) is movable relative to the base (202) and has a closed position; The pressure relief valve is configured such that when the cover (206) is in the closed position, both the base seal (204) and the cover seal (208) abut against the first element (100).

3. The pressure relief valve according to claim 2, characterized in that: The first component (100) includes a first plate (104) and a second plate (106) arranged at an angle; The base seal (204) is configured to abut against the first plate (104); The cover seal (208) is configured to abut against the second plate (106) when the cover (206) is in the closed position.

4. The pressure relief valve according to claim 3, characterized in that: The cover seal (208) includes a cover seal root (301) and a cover seal first leg (302), wherein the cover seal first leg (302) is connected to the cover seal root (301); The root (301) of the cover seal is connected to the cover (206); The first leg (302) of the cover seal is configured to abut against the second plate (106) when the cover (206) is in the closed position.

5. The pressure relief valve according to claim 4, characterized in that: The cover seal (208) is also configured to abut against the first plate (104) when the cover (206) is in the closed position.

6. The pressure relief valve according to claim 5, characterized in that: The cover seal (208) further includes a second leg (304) of the cover seal, which is connected to the root (301) of the cover seal; The second leg (304) of the cover seal is configured to abut against the first plate (104) when the cover (206) is in the closed position.

7. The pressure relief valve according to claim 3, characterized in that: The base seal (204) includes a base seal root (311), a base seal first leg (312) and a base seal second leg (314), wherein the base seal first leg (312) and the base seal second leg (314) are both connected to the base seal root (311). The root (311) of the base seal is connected to the base (202); The first leg (312) and the second leg (314) of the base seal are configured to abut against the first plate (104).

8. The pressure relief valve according to claim 1, characterized in that, Also includes: Leaflets (234); The base (202) is provided with a base through hole (232), and the blade (234) is located between the base (202) and the cover (206), and covers the base through hole (232); The blade (234) is movable relative to the base (202) to open or close the base through hole (232).

9. The pressure relief valve according to claim 1, characterized in that, Also includes: An actuator (210) is disposed on the base (202) and configured to drive the cover (206) to move relative to the base (202).

10. The pressure relief valve according to claim 1, characterized in that: The first component (100) is provided with a mounting through hole (102); The base (202) is disposed in the mounting through hole (102) and assembled on the first piece (100).

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