A vehicle door pressure relief valve

Abstract

The utility model discloses a kind of vehicle door pressure relief valves, including valve body, the valve body inside has the annular insertion segment of longitudinal through fixed in its bottom, the annular insertion segment inside has the air passage of through upper and lower ends, annular insertion segment upper end extends to the valve body inside, and annular insertion segment upper end port hinged mounting is used to close or open the valve plate of the air passage, annular insertion segment lower end extends to the valve body bottom outside, valve body upper end port is equipped with grating valve cover. When using, the part of annular insertion segment lower end extending to the valve body bottom outside is inserted and installed on the vehicle cabin sheet metal of vehicle, when the air pressure value in air passage rises to greater than valve plate critical opening pressure value, valve plate is opened by gas in air passage and changes into opening state, vehicle cabin pressure relief;When the air pressure value in air passage reduces to insufficient to support valve plate opening, valve plate falls and changes into closed state by its gravity, overall structure design is ingenious and reasonable, compact simple, preparation implementation feasibility is high, cost is low, and economic practicality is good.

Description

Technical Field

[0001] This utility model relates to the technical field of car door pressure relief valves, specifically to a car door pressure relief valve. Background Technology

[0002] A tractor is a self-propelled power machine used to traction and drive construction machinery to complete various mobile tasks. The door pressure relief valve is a crucial component related to the balance of internal and external air pressure within the vehicle body. Traditional automotive pressure relief valves generally consist of a valve body and a valve plate; the body is a one-way airflow valve sealed to the vehicle body sheet metal. In conventional automotive pressure relief valves, the valve plate is typically installed inside the valve body via an electric drive device, resulting in a complex overall structure, high manufacturing costs, and unsuitability for use on heavy vehicles such as tractors. Therefore, this invention proposes a door pressure relief valve to meet the pressure relief requirements when opening and closing doors on heavy vehicles such as tractors. Summary of the Invention

[0003] The purpose of this utility model is to overcome the defects in the existing technology and provide a door pressure relief valve. In use, the lower end of the circumferential plug-in section extends to the outer side of the bottom of the valve body and is plugged into the sheet metal of the vehicle's cabin. When the air pressure in the air passage rises to a value greater than the critical opening pressure of the valve plate, the valve plate is pushed open by the gas in the air passage and changes to the open state, thereby relieving the pressure in the cabin connected to the air passage. When the air pressure in the air passage drops to a value insufficient to support the opening of the valve plate, the valve plate falls down by its own weight and re-closes the upper port of the circumferential plug-in section, and the valve plate changes to the closed state. There is no need to set up an additional electric drive device for controlling the opening or closing of the valve plate. The overall structure is ingeniously designed, compact and simple, with high feasibility of manufacturing and implementation, low cost, and good economic practicality.

[0004] To achieve the above objectives, the technical solution of this utility model is to design a car door pressure relief valve, including a valve body. The valve body has a longitudinally penetrating circumferential insertion section fixed to its bottom. The circumferential insertion section has an air passage penetrating its upper and lower ends. The upper end of the circumferential insertion section extends into the valve body, and a valve plate for closing or opening the air passage is hinged to the upper port of the circumferential insertion section. The lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body, and a grille valve cover is installed at the upper port of the valve body.

[0005] This utility model discloses a car door pressure relief valve. In use, the lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body and is inserted into the sheet metal of the vehicle's cabin. When the air pressure in the air passage rises to a value greater than the critical opening pressure of the valve plate, the valve plate is pushed open by the gas in the air passage and changes to the open state, thereby relieving the pressure in the cabin connected to the air passage. When the air pressure in the air passage drops to a value insufficient to support the opening of the valve plate, the valve plate falls down by its own weight and re-closes the upper port of the circumferential insertion section, and the valve plate changes to the closed state. No additional electric drive device is required to control the opening or closing of the valve plate. The overall structure is ingeniously designed, compact and simple, with high feasibility for manufacturing and implementation, low cost, and good economic practicality.

[0006] The preferred technical solution is that the upper port of the circumferential insertion section is set as a sloping port with a lower front and higher rear or vice versa. The upper port of the circumferential insertion section has a grid top plate inside. The valve plate is laid obliquely on the upper side of the grid top plate, and the lower edge of the valve plate is hinged to the upper side of the bottom of the valve body via a hinge assembly, or the higher edge of the valve plate is hinged to the upper side of the bottom of the valve body via a hinge assembly. The valve plate is laid on the sloping port at the upper end of the circumferential insertion section, so that the valve plate is in a certain vertical state in the initial closed state, thereby reducing the difficulty of opening the valve plate, which reduces the critical opening pressure value of the valve plate. The upper sloping port of the circumferential insertion section has a grid top plate inside for fitting and supporting the valve plate, effectively improving the fit and conformity between the valve plate and the upper sloping port of the circumferential insertion section when the valve plate is in the closed state, ensuring that the valve plate maintains good flatness even after long-term use, and helping to ensure that the door pressure relief valve of this utility model maintains good sealing performance even after long-term use.

[0007] A further preferred technical solution includes several latches on the upper side of the bottom of the valve body, near the lower edge of the upper port of the circumferential insertion section. Several locking holes on the lower edge of the valve plate are correspondingly and movably engaged with the latches. The latches and locking holes constitute the hinge assembly. A reinforcing rib is provided between the outer peripheral wall of the upper end of the circumferential insertion section and the outer peripheral wall of the valve body. The hinge assembly structure is ingeniously and rationally designed, ensuring convenient and efficient installation and operation of the valve plate on the valve body. The reinforcing rib improves the connection strength between the circumferential insertion section and the valve body, contributing to improved stability and extended service life of the vehicle door pressure relief valve of this invention.

[0008] A further preferred technical solution is that the angle between one upper side of the grille top plate and the horizontal plane is set as α, and the value of α ranges from 20° to 75°. This ensures that the valve plate, in its initial closed state, maintains a reasonable angle with the horizontal plane, guaranteeing that the valve plate has a reasonable critical opening pressure value.

[0009] A further preferred technical solution is that a limiting component is installed inside the valve body to limit the opening angle of the valve plate. When the valve plate opens due to the pressure value in the air passage exceeding the critical opening pressure value of the valve plate, the limiting component limits the opening angle of the valve plate, effectively preventing the valve plate from opening excessively and impacting the grille valve cover, thereby ensuring the safety of the door pressure relief valve of this utility model during use.

[0010] A further preferred technical solution includes a limiting component comprising studs and abutment plates located at the left and right ends of the upper side of the bottom of the valve body. One end of the abutment plate is fixed to the top of the stud at the left end of the upper side of the bottom of the valve body by a screw passing through a mounting hole, and the other end of the abutment plate is fixed to the top of the stud at the right end of the upper side of the bottom of the valve body by a screw passing through a mounting hole. The abutment plate is suspended above the valve plate. The limiting component has a simple structural design and is easy to manufacture, ensuring the successful fabrication and implementation of the vehicle door pressure relief valve of this utility model.

[0011] A further preferred technical solution includes a grille valve cover comprising a circumferential section and a grille top plate fixed to the upper end of the circumferential section. The inner wall of the circumferential section and the upper surface of the outer wall of the valve body are provided with mutually compatible grooves and clips. The grille valve cover is fastened to the upper end of the valve body via the mutually cooperating grooves and clips. The grille valve cover is easily installed on the upper end of the valve body, ensuring that the door pressure relief valve of this utility model can be quickly assembled and formed.

[0012] A further preferred technical solution is that the lower outer peripheral wall of the circumferential insertion section is provided with several snap-fits at intervals. In use, the portion of the lower end of the circumferential insertion section extending to the outer side of the bottom of the valve body is inserted and snapped onto the pressure relief channel port of the vehicle's cabin sheet metal through several snap-fits, making the installation method simple and efficient.

[0013] A further preferred technical solution is that the valve body and grille valve cover are injection molded parts, the abutment plate is a steel plate, the valve plate is a stainless steel plate, and a flexible buffer layer is glued to the lower side of the valve plate. The valve body and grille valve cover are injection molded parts, resulting in high processing efficiency; the valve plate is made of stainless steel, which has good corrosion resistance, helping to ensure the long-term good sealing performance of the door pressure relief valve of this utility model; the flexible buffer layer glued to the lower side of the valve plate helps to reduce the impact noise between the valve plate and the upper side of the grille top plate when the valve plate closes under its own weight, thus playing a noise reduction role.

[0014] A further preferred technical solution includes a sponge layer adhesively laid on the lower side of the top of the grille valve cover, an eaves on the upper edge of the valve body that abuts and presses against the outer periphery of the lower side of the sponge layer, and a sealing gasket adhesively laid on the outer periphery of the lower side of the bottom of the valve body. The sponge layer adhesively laid on the lower side of the top of the grille valve cover filters and protects the internal cavity of the valve body, effectively preventing dust, solid impurities, and liquid impurities from entering the valve body under harsh working conditions, ensuring good cleanliness inside the valve body; the eaves on the upper end of the valve body presses against the outer periphery of the sponge layer adhesively laid on the lower side of the top of the grille valve cover, further improving the installation stability of the sponge layer inside the valve body; in use, when the lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body and is inserted into the pressure relief channel port of the vehicle's cabin sheet metal, the sealing gasket improves the contact sealing between the bottom of the valve body and the cabin sheet metal.

[0015] The advantages and beneficial effects of this utility model are as follows:

[0016] 1. This utility model discloses a car door pressure relief valve. In use, the lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body and is inserted into the sheet metal of the vehicle's cabin. When the air pressure in the air passage rises to a value greater than the critical opening pressure of the valve plate, the valve plate is pushed open by the gas in the air passage and changes to the open state, thereby relieving the pressure in the cabin connected to the air passage. When the air pressure in the air passage drops to a value insufficient to support the opening of the valve plate, the valve plate falls down by its own weight and re-closes the upper port of the circumferential insertion section, and the valve plate changes to the closed state. It does not require an additional electric drive device to control the opening or closing of the valve plate. The overall structure is ingeniously designed, compact and simple, with high feasibility for manufacturing and implementation, low cost, and good economic practicality.

[0017] 2. The upper port of the circumferential insertion section is designed as a sloping port with a lower front and higher rear or vice versa. The upper port of the circumferential insertion section has a grid top plate inside. The valve plate is laid obliquely on the upper side of the grid top plate, and the lower edge of the valve plate is hinged to the upper side of the bottom of the valve body via a hinge assembly. The valve plate is laid on the sloping port at the upper end of the circumferential insertion section, so that the valve plate is in a certain vertical position in the initial closed state, thereby reducing the difficulty of opening the valve plate, which reduces the critical opening pressure value of the valve plate. The sloping port at the upper end of the circumferential insertion section has a grid top plate inside for fitting and supporting the valve plate, effectively improving the fit and conformity between the valve plate and the sloping port at the upper end of the circumferential insertion section when the valve plate is in the closed state, ensuring that the valve plate maintains good flatness even after long-term use, and helping to ensure that the door pressure relief valve of this utility model maintains good sealing performance even after long-term use.

[0018] 3. The valve body has several latches on its bottom upper side near the lower edge of the upper port of the circumferential insertion section. Several locking holes on the lower edge of the valve plate are correspondingly and movably engaged with the latches. The latches and locking holes constitute the hinge assembly. A reinforcing rib is provided between the outer peripheral wall of the upper end of the circumferential insertion section and the outer peripheral wall of the valve body. The hinge assembly has a clever and reasonable structural design, ensuring convenient and efficient installation and operation of the valve plate on the valve body. The reinforcing rib improves the connection strength between the circumferential insertion section and the valve body, helping to improve the stability of the door pressure relief valve of this utility model and extend its service life.

[0019] 4. The angle between the upper side of the grille top plate and the horizontal plane is set as α, and the value of α ranges from 20° to 75°. This ensures that the valve plate maintains a reasonable angle with the horizontal plane in the initial closed state, thus ensuring that the valve plate has a reasonable critical opening pressure value.

[0020] 5. The valve body is equipped with a limiting component for limiting the opening angle of the valve plate. When the valve plate opens due to the pressure in the air passage exceeding the critical opening pressure of the valve plate, the limiting component limits the opening angle of the valve plate, effectively preventing the valve plate from opening excessively and impacting the grille valve cover, thus ensuring the safety of the door pressure relief valve of this utility model during use.

[0021] 6. The lower outer peripheral wall of the circumferential insertion section is provided with several snap-fits at intervals. In use, the portion of the lower end of the circumferential insertion section extending to the outer side of the bottom of the valve body is inserted and snapped onto the pressure relief channel port of the vehicle's cabin sheet metal through several snap-fits. The installation method is simple and efficient.

[0022] 7. The valve body and grille valve cover are injection molded parts, which has high processing efficiency; the valve plate is made of stainless steel plate, which has good corrosion resistance and helps to ensure the long-term use and good sealing performance of the door pressure relief valve of this utility model; a flexible buffer layer is glued to the lower side of the valve plate, which helps to reduce the impact noise between the valve plate and the upper side of the grille top plate when the valve plate closes by its own weight, thus playing a noise reduction role.

[0023] 8. A sponge layer is adhesively laid on the lower side of the top of the grille valve cover. The upper edge of the valve body has an eave that abuts and presses against the outer periphery of the lower side of the sponge layer. A sealing gasket is adhesively laid on the outer periphery of the lower side of the bottom of the valve body. The sponge layer adhesively laid on the lower side of the top of the grille valve cover plays a filtering and protective role for the internal cavity of the valve body, effectively preventing dust, solid impurities, and liquid impurities from entering the valve body under harsh working conditions, ensuring good cleanliness inside the valve body. The eave at the upper end of the valve body presses against the outer periphery of the sponge layer adhesively laid on the lower side of the top of the grille valve cover, further improving the installation stability of the sponge layer inside the valve body. In use, when the lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body and is inserted into the pressure relief channel port of the vehicle's cabin sheet metal, the sealing gasket improves the contact sealing between the bottom of the valve body and the cabin sheet metal. Attached Figure Description

[0024] Figure 1 This is a front-view perspective perspective view of a car door pressure relief valve according to this utility model;

[0025] Figure 2 This is a perspective view of a car door pressure relief valve according to the present invention;

[0026] Figure 3 This is an exploded view of a car door pressure relief valve according to this utility model;

[0027] Figure 4 This is a three-dimensional view of the grille valve cover from an upward angle;

[0028] Figure 5 This is a top-down perspective view of the valve body;

[0029] Figure 6 It is a 3D view of the valve plate;

[0030] Figure 7 This is a longitudinal sectional view of a car door pressure relief valve according to the present invention along the front-to-back direction;

[0031] Figure 8 yes Figure 7 A magnified view of a section at point H.

[0032] In the diagram: 1. Valve body; 2. Grille valve cover; 3. Valve plate; 4. Sponge layer; 5. Abutment plate; 6. Sealing gasket; 7. Air passage; 1-1. Circumferential insertion section; 1-2. Grille top plate one; 1-3. Clip one; 1-4. Stud; 1-5. Slot; 1-6. Clip two; 1-7. Eaves; 1-8. Reinforcing rib; 2-1. Circumferential section; 2-2. Grille top plate two; 2-3. Clip three; 3-1. Clip hole. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0034] Example

[0035] like Figures 1-8 As shown, this utility model is a car door pressure relief valve, including a valve body 1. The valve body 1 has a longitudinally penetrating circumferential insertion section 1-1 fixed to its bottom. The circumferential insertion section 1-1 has an air passage 7 penetrating its upper and lower ends. The upper end of the circumferential insertion section 1-1 extends into the valve body 1, and a valve plate 3 for closing or opening the air passage 7 is hinged to the upper port of the circumferential insertion section 1-1. The lower end of the circumferential insertion section 1-1 extends to the outer side of the bottom of the valve body 1, and a grille valve cover 2 is installed at the upper port of the valve body 1.

[0036] Preferably, the upper port of the circumferential insertion section 1-1 is set as a sloping port with the front lower and the back higher or the front higher and the back lower. The upper port of the circumferential insertion section 1-1 has a grid top plate 1-2 inside. The valve plate 3 is laid flat on the upper side of the grid top plate 1-2 at an incline. The lower edge of the valve plate 3 is hinged to the upper side of the bottom of the valve body 1 through a hinge assembly, or the higher edge of the valve plate 3 is hinged to the upper side of the bottom of the valve body 1 through a hinge assembly.

[0037] More preferably, the upper side of the bottom of the valve body 1 has several latches 1-3 near the lower edge of the upper port of the circumferential insertion section 1-1, and several locking holes 3-1 on the lower edge of the valve plate 3 are correspondingly and movably engaged with the latches 1-3, the latches 1-3 and the locking holes 3-1 constitute the hinge assembly; or, the upper side of the bottom of the valve body 1 has several latches 1-3 near the higher edge of the upper port of the circumferential insertion section 1-1, and several locking holes 3-1 on the higher edge of the valve plate 3 are correspondingly and movably engaged with the latches 1-3, the latches 1-3 and the locking holes 3-1 constitute the hinge assembly; there are reinforcing ribs 1-8 between the outer peripheral wall of the upper end of the circumferential insertion section 1-1 and the outer peripheral wall of the valve body 1.

[0038] More preferably, the angle between the upper side of the top plate of the grille 1-2 and the horizontal plane is set as α, and the value of α ranges from 20 to 75°.

[0039] More preferably, the valve body 1 is equipped with a limiting component for limiting the opening angle of the valve plate 3.

[0040] More preferably, the limiting component includes studs 1-4 and abutment plates 5 disposed at the left and right ends of the upper side of the bottom of the valve body 1. One end of the abutment plate 5 is fixed to the top of the stud 1-4 at the left end of the upper side of the bottom of the valve body 1 by a screw passing through the mounting hole, and the other end of the abutment plate 5 is fixed to the top of the stud 1-4 at the right end of the upper side of the bottom of the valve body 1 by a screw passing through the mounting hole. The abutment plate 5 is correspondingly suspended above the valve plate 3.

[0041] More preferably, the grille valve cover 2 includes an circumferential section 2-1 and a grille top plate 2-2 fixed to the upper end of the circumferential section 2-1. The inner wall surface of the circumferential section 2-1 and the upper end of the outer wall surface of the valve body 1 are provided with mutually compatible slots 1-5 and buckles 2-3. The grille valve cover 2 is fastened to the upper end of the valve body 1 by the mutually cooperating slots 1-5 and buckles 2-3.

[0042] More preferably, the lower outer peripheral wall of the circumferential insertion section 1-1 is provided with a plurality of buckles 1-6 at circumferential intervals.

[0043] More preferably, the valve body 1 and the grille valve cover 2 are injection molded parts, the abutment plate 5 is a steel plate, the valve plate 3 is a stainless steel plate, and a flexible buffer layer is glued to the lower side of the valve plate 3. Specifically, the valve body 1 and the grille valve cover 2 are ABS injection molded parts, a sponge layer is glued to the lower side of the valve plate 3, and an anti-corrosion layer is powder-coated on the outer side of the abutment plate 5.

[0044] More preferably, a sponge layer 4 is adhesively laid on the lower side of the top of the grille valve cover 2, the upper edge of the valve body 1 has an eave 1-7 that abuts and presses against the outer periphery of the lower side of the sponge layer 4, and a sealing gasket 6 is adhesively laid on the outer periphery of the lower side of the bottom of the valve body 1.

[0045] This utility model discloses a car door pressure relief valve. In use, the lower end of the circumferential insertion section extends to the outer side of the bottom of the valve body and is inserted into the sheet metal of the vehicle's cabin. When the air pressure in the air passage rises to a value greater than the critical opening pressure of the valve plate, the valve plate is pushed open by the gas in the air passage and changes to the open state, thereby relieving the pressure in the cabin connected to the air passage. When the air pressure in the air passage drops to a value insufficient to support the opening of the valve plate, the valve plate falls down by its own weight and re-closes the upper port of the circumferential insertion section, and the valve plate changes to the closed state. No additional electric drive device is required to control the opening or closing of the valve plate. The overall structure is ingeniously designed, compact and simple, with high feasibility for manufacturing and implementation, low cost, and good economic practicality.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A car door pressure relief valve, characterized in that, The valve body (1) includes a valve body (1) with a longitudinally penetrating circumferential insertion section (1-1) fixed at its bottom. The circumferential insertion section (1-1) has an air passage (7) penetrating both the upper and lower ends. The upper end of the circumferential insertion section (1-1) extends into the valve body (1), and a valve plate (3) for closing or opening the air passage (7) is hinged to the upper port of the circumferential insertion section (1-1). The lower end of the circumferential insertion section (1-1) extends to the outer side of the bottom of the valve body (1), and a grille valve cover (2) is installed at the upper port of the valve body (1).

2. The door pressure relief valve as described in claim 1, characterized in that, The upper port of the circumferential plug section (1-1) is set as a sloping port with the front lower and the back higher or the front higher and the back lower. The upper port of the circumferential plug section (1-1) has a grid top plate (1-2) inside. The valve plate (3) is laid flat on the upper side of the grid top plate (1-2) at an angle. The lower edge of the valve plate (3) is hinged to the upper side of the bottom of the valve body (1) through a hinge assembly, or the higher edge of the valve plate (3) is hinged to the upper side of the bottom of the valve body (1) through a hinge assembly.

3. The door pressure relief valve as described in claim 2, characterized in that, The valve body (1) has several latches (1-3) on the upper side of the bottom, which are close to the lower edge of the upper port of the circumferential insertion section (1-1). Several locking holes (3-1) on the lower edge of the valve plate (3) are movably engaged with the latches (1-3) in a corresponding manner. The latches (1-3) and the locking holes (3-1) constitute the hinge assembly. There are reinforcing ribs (1-8) between the outer peripheral wall of the upper end of the circumferential insertion section (1-1) and the outer peripheral wall of the valve body (1).

4. The door pressure relief valve as described in claim 3, characterized in that, The angle between the upper side of the top plate of the grid (1-2) and the horizontal plane is set as α, and the value of α ranges from 20 to 75°.

5. The door pressure relief valve as described in claim 4, characterized in that, The valve body (1) is equipped with a limiting component for limiting the opening angle of the valve plate (3).

6. The door pressure relief valve as described in claim 5, characterized in that, The limiting component includes studs (1-4) and abutment plates (5) located at the left and right ends of the upper side of the bottom of the valve body (1). One end of the abutment plate (5) is fixed to the top of the studs (1-4) at the left end of the upper side of the bottom of the valve body (1) by a screw passing through the mounting hole. The other end of the abutment plate (5) is fixed to the top of the studs (1-4) at the right end of the upper side of the bottom of the valve body (1) by a screw passing through the mounting hole. The abutment plate (5) is suspended above the valve plate (3).

7. The door pressure relief valve as described in claim 6, characterized in that, The grille valve cover (2) includes a circumferential section (2-1) and a grille top plate (2-2) fixed to the upper end of the circumferential section (2-1). The inner wall of the circumferential section (2-1) and the upper end of the outer wall of the valve body (1) are provided with mutually compatible slots (1-5) and buckles (2-3). The grille valve cover (2) is fastened to the upper end of the valve body (1) by the mutually cooperating slots (1-5) and buckles (2-3).

8. The door pressure relief valve as described in claim 7, characterized in that, The lower outer peripheral wall of the circumferential insertion section (1-1) is provided with several buckles (1-6) spaced apart in a circumferential manner.

9. The door pressure relief valve as described in claim 8, characterized in that, The valve body (1) and the grille valve cover (2) are injection molded parts, the abutment plate (5) is a steel plate, the valve plate (3) is a stainless steel plate, and a flexible buffer layer is glued to the lower side of the valve plate (3).

10. The door pressure relief valve as described in any one of claims 1 to 9, characterized in that, The top lower side of the grille valve cover (2) is glued with a sponge layer (4), the upper edge of the valve body (1) has an eave (1-7) that abuts and presses against the outer periphery of the lower side of the sponge layer (4), and the outer periphery of the bottom lower side of the valve body (1) is glued with a sealing gasket (6).

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