Dustproof pressure release valve and automobile

Abstract

The utility model relates to the technical field of automobile pressure release valves, and discloses a dustproof pressure release valve and an automobile, the dustproof pressure release valve comprises a pressure release valve frame, a filter part and a protective frame, a plurality of blades are arranged on the pressure release valve frame, a plurality of buckle fixing parts are arranged on the outer side face of the pressure release valve frame, the filter part is tightly attached to the back face of the pressure release valve frame, and a plurality of buckles are correspondingly arranged on the edge of the protective frame. The filter piece is pressed on the back surface of the pressure release valve frame by the protective frame, and the buckle is correspondingly clamped with the buckle fixing part; according to the pressure relief valve, the filter part and the protective frame are additionally arranged on an original pressure relief valve, the filter part is used for being tightly attached to the back face of the pressure relief valve frame, the protective frame is used for pressing the filter part to the back face of the pressure relief valve frame, the protective frame is connected with the buckle fixing part additionally arranged on the pressure relief valve frame body in a clamped mode through the buckle to form an integrated structure, and the filter part can effectively block dust; and dust is prevented from entering the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile pressure relief valves, in particular to a dustproof pressure relief valve and an automobile. Background Art

[0002] The pressure relief valve is also called a breathing frame. According to the principle of atmospheric aerodynamics, the air conditioner takes in air and the breathing frame exhausts air. Without opening the window, the dirty air in the car is quickly discharged outside the car, and the fresh air outside is purified and enters the car, forming an air flow exchange between the inside and outside of the car to maintain the air quality in the car. However, because the pressure relief valve is an exhaust port, when the vehicle is driving on a bumpy and dusty road section, if the speed is too fast, the airflow in this area is large, and it is easy to form an air vortex and a negative pressure area. Once the car is driving fast on a dusty road, the blade of the pressure relief valve will be opened. Under the action of negative pressure, dust can easily penetrate into the car through the pressure relief valve. In order to improve the dust prevention of the current automobile pressure relief valve, the following forms are usually used: First, sponge is pasted on the outer sheet metal of the pressure relief valve to block and reduce the airflow from bringing dust into the car; second, the blade of the pressure relief valve is thickened to increase the weight of the blade itself and reduce the opening angle; third, the pressure relief valve is designed with a double-layer blade structure to achieve secondary blocking.

[0003] The above three methods all have corresponding problems: the first one is that the sponge is pasted on the outer sheet metal of the vehicle. There is a large airflow at the rear guard outside the vehicle when the vehicle is driving. After a long time, the sponge is easily impacted and falls off by the airflow; and this area is a water sponge area, which is corroded by rain for a long time, causing the adhesion of the sponge to decrease or become powdery, and the reliability is relatively poor; the second one is that after the blades of this structure are thickened, it will cause a loud noise when closing the door, causing customer complaints, and when the air conditioner is turned on, the air flow inside and outside will become smaller, and the ventilation effect of the whole vehicle will become worse, requiring customers to increase the air conditioner gear, which increases fuel consumption; the third one is that this structure requires two ventilation frames to be stacked, which increases the cost of a single vehicle and the weight of the whole vehicle. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a dustproof pressure relief valve and a car. By adding a filter element and a protective frame to the original pressure relief valve, the filter element is used to cling to the back of the pressure relief valve frame, and the protective frame is used to press the filter element against the back of the pressure relief valve frame. The filter element can effectively filter dust and prevent dust from entering the car.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] In a first aspect, a dustproof pressure relief valve comprises a pressure relief valve frame, a filter element and a protective frame, wherein a plurality of blades are arranged on the pressure relief valve frame, a plurality of snap-fit ​​fixing parts are arranged on the outer side surface of the pressure relief valve frame, the filter element is tightly attached to the back of the pressure relief valve frame, a plurality of snap-fit ​​fixing parts are correspondingly arranged on the edge of the protective frame, the protective frame presses the filter element against the back of the pressure relief valve frame, and the snap-fit ​​fixing parts are correspondingly snap-fitted.

[0007] As a further implementation, the filter element is in a sheet-like structure.

[0008] As a further implementation, the area of ​​the filter element is larger than the area of ​​the exhaust port of the pressure relief valve.

[0009] As a further implementation, the filter element is a filter sponge.

[0010] As a further implementation method, a snap-fit ​​fixing portion is provided on the outer side surface of at least one group of opposite sides of the pressure relief valve frame, and the snap-fit ​​fixing portion is evenly arranged on the outer side surface of the pressure relief valve frame; the snap-fit ​​position on the protective frame is arranged corresponding to the snap-fit ​​fixing portion.

[0011] As a further implementation method, the protective frame includes a bottom surface with a flange at the edge of the bottom surface, the flange is used to cover the back side of the pressure relief valve frame, the clip is extended by the flange, and a protrusion is provided on the outer side of the clip end.

[0012] As a further implementation, a slot through which the buckle passes is formed on the inner side of the buckle fixing portion, and a first opening is provided on the buckle fixing portion. After the buckle extends into the slot, the protrusion abuts against the first opening.

[0013] As a further implementation, the bottom surface shape of the guard frame is adapted to the back surface shape of the pressure relief valve frame, and a plurality of second openings are provided on the guard frame, and the positions of the second openings correspond to the positions of the blades.

[0014] As a further implementation, the snap-fit ​​fixing portions on different sides of the pressure relief valve frame are arranged at different positions.

[0015] In a second aspect, a car is provided with a body mounting interface on the body of the car, and the body mounting interface is used to install any dustproof pressure relief valve as described above.

[0016] The beneficial effects of the above utility model are as follows:

[0017] 1. The utility model adds a filter element and a protective frame to the original pressure relief valve. The filter element is used to be closely attached to the back of the pressure relief valve frame. The protective frame is used to press the filter element against the back of the pressure relief valve frame. The protective frame is snap-connected with the snap-fastening portion added to the pressure relief valve frame through a snap to form an integrated structure. The filter element can effectively block dust and prevent dust from entering the vehicle.

[0018] 2. The protective frame is covered on the back of the pressure relief valve frame by the flange, which can effectively fix the filter sponge, compress the filter sponge, and prevent the filter sponge from detaching from the pressure relief valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of a dust-proof pressure relief valve in an embodiment of the utility model;

[0021] Figure 2 It is a front view of the pressure relief valve frame in the embodiment of the utility model;

[0022] Figure 3 This is a front view of the filter element in the embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the protective frame in the embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a protective frame clamped on a pressure relief valve frame in an embodiment of the utility model;

[0025] Figure 6 yes Figure 5 Middle AA section view;

[0026] Figure 7 yes Figure 6 Enlarged view of part F in the middle;

[0027] Figure 8 It is a structural schematic diagram of a pressure relief valve body installed on a car body in an embodiment of the utility model.

[0028] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0029] Among them: 10. Pressure relief valve body, 1. Pressure relief valve frame, 2. Slot, 3. Blade, 4. Filter, 5. Guard frame, 6. Buckle, 7. Vehicle body mounting interface, 8. Sealing ring; 21. First opening, 22. Buckle fixing part, 51. Second opening, 61. Protrusion. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Embodiment 1

[0032] In a typical implementation of the present invention, reference is made to Figure 1-Figure 7As shown, a dustproof pressure relief valve, the pressure relief valve body 10 includes a pressure relief valve frame 1, a filter 4 and a protective frame 5, the filter 4 is used to be tightly attached to the back of the pressure relief valve frame 1, and the protective frame 5 is used to press the filter 4 against the back of the pressure relief valve frame 1 to prevent the filter 4 from falling off.

[0033] like Figure 1 and Figure 2 As shown, the pressure relief valve body 10 of this embodiment is provided with four groups of blades 3, the pressure relief valve frame 1 is provided with four groups of exhaust ports, and corresponding support structures are arranged at the exhaust ports, and the blades are rotatably installed at the exhaust ports. When the blades are closed, they are supported by the support structure on the pressure relief valve frame 1. Among them, the support structure, the blades 3, and the exhaust ports are all prior arts of the pressure relief valve in the field.

[0034] like Figure 5 As shown, a sealing ring 8 is provided on the peripheral side of the pressure relief valve frame 1 near the front end to ensure the sealing of the pressure relief valve body 10 after it is installed on the car. The sealing ring 8 can prevent dust from passing between the pressure relief valve body 10 and the vehicle body mounting interface 7, and the sealing ring is a prior art.

[0035] In order to prevent the blades from accidentally opening during driving, causing dust to enter the vehicle from the exhaust port, the present embodiment adds a filter 4 and a protective frame 5. The filter 4 is a sheet-like structure, which is tightly attached to the back of the pressure relief valve frame 1, and the protective frame 5 presses the filter 4 against the back of the pressure relief valve frame 1. The outer side of the pressure relief valve frame 1 is provided with a plurality of buckle fixing parts 22, and the edge of the protective frame 5 is correspondingly provided with a plurality of buckles 6. After the protective frame 5 presses the filter 4 against the back of the pressure relief valve frame 1, the buckles 6 are correspondingly engaged with the buckle fixing parts 22, and the dust-proof pressure relief valve is assembled.

[0036] like Figure 1-Figure 3 As shown, four blades 3 are distributed in two rows and two columns at the exhaust port of the pressure relief valve. In order to achieve effective filtration of dust, the area of ​​the filter element 4 should be larger than the exhaust port area of ​​the pressure relief valve to ensure that the gas can be filtered by the filter element 4 after entering the pressure relief valve from the outside and passing through the exhaust port to block the dust.

[0037] The material of the filter element 4 is preferably filter sponge, which can effectively filter dust in the gas. The area of ​​the filter sponge is the same as the back area of ​​the pressure relief valve frame 1, or it can also be larger than the back area of ​​the pressure relief valve frame 1, as long as the filter sponge is pressed against the back of the pressure relief valve frame 1 through the protective frame 5.

[0038] like Figure 2 As shown, the pressure relief valve frame 1 is rectangular, having four sides. Figure 2 Taking the perspective as an example, the upper and lower sides of the pressure relief valve frame 1 are provided with snap-fit ​​fixing parts, while the left and right sides are not provided with snap-fit ​​fixing parts. There are three snap-fit ​​fixing parts on the upper and lower sides, and the structure is the same.

[0039] like Figure 5-Figure 7 As shown, the protective frame 5 includes a bottom surface, and flanges are arranged at the four edges of the bottom surface. The flanges are used to cover the back side of the pressure relief valve frame 1, and the protective frame 5 is correspondingly provided with buckles at the upper and lower flanges. The buckle 6 is obtained by extending the flange at the corresponding position by a set distance, and the buckle 6 is arranged correspondingly to the buckle fixing portion 22.

[0040] The snap-fitting part 22 is evenly arranged on the outer side of the pressure relief valve frame 1, and the snap-fitting part 22 forms a slot 2 on the inner side for the snap-fit ​​to pass through. The slot 2 is a channel for the snap-fit ​​to pass through, and the width of the channel is greater than the width of the snap-fit. A first opening 21 is provided on the snap-fitting part 22, and a protrusion 61 is provided on the outer side of the end of the snap-fit. After the snap-fit ​​6 is inserted into the slot, the protrusion abuts against the first opening 21, and the snap connection is completed at this time.

[0041] like Figure 6 As shown, the bottom surface shape of the protective frame 5 should be adapted to the back surface shape of the pressure relief valve frame 1. The bottom surface shape of this embodiment includes two sections connected to each other, and the two ends are obtuse angles. In other examples, the back surface shape of the pressure relief valve frame 1 is a plane, and the bottom surface of the protective frame is also a plane.

[0042] It is understandable that the bottom surface of the guard frame 5 should be hollowed out, such as Figure 4 As shown, the protective frame 5 is provided with four second openings 51 , and the positions of the second openings 51 correspond to the positions of the blades 3 , so that the gas can smoothly pass through the protective frame.

[0043] It should be noted that the size, shape, and arrangement of the second openings of the protective frame 5 of this embodiment are all determined by the structure of the pressure relief valve body 10. The number of the second openings should be the same as the number of the blades and the exhaust ports. The shape of the filter sponge is not limited, as long as it can cover all the exhaust ports and can be pressed by the protective frame 5.

[0044] In order to prevent reverse installation, the arrangement positions of the snap fixing parts 22 on the upper and lower sides of the pressure relief valve frame 1 are different, that is, the distances between the snap fixing parts 22 on both sides and one end of the back side of the pressure relief valve frame 1 are different, thereby realizing an error-proof design.

[0045] In other examples, buckle fixing parts 22 may be provided on all four sides of the pressure relief valve frame. In other examples, the buckle fixing parts and the buckles may also adopt other snap-fitting forms, as long as snap-fitting and fixing can be achieved.

[0046] According to the development requirements, the first-tier supplier assembles and develops the filter sponge and the protective frame based on the conventional pressure relief valve structure. After installation, the new pressure relief valve assembly is supplied to the automobile factory, and then the assembly is directly installed and connected to the body installation interface 7. The installation is simple, which improves efficiency and improves the problem of dust entering the cabin.

[0047] Embodiment 2

[0048] In a typical implementation of the present invention, reference is made to Figure 1-Figure 8 As shown, a car is provided with a body mounting interface 7 on the car body, the filter sponge is pressed tightly against the back of the pressure relief valve frame and pressed with a protective frame, the buckle is snapped into the corresponding buckle fixing part, and then the pressure relief valve assembly is installed at the body mounting interface 7.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dustproof pressure relief valve, characterized in that: It includes a pressure relief valve frame, a filter element and a protective frame. The pressure relief valve frame is provided with a plurality of blades. The outer side of the pressure relief valve frame is provided with a plurality of buckle fixing parts. The filter element is tightly attached to the back of the pressure relief valve frame. The edge of the protective frame is provided with a plurality of buckles. The protective frame presses the filter element tightly against the back of the pressure relief valve frame, and the buckles are correspondingly engaged with the buckle fixing parts.

2. A dustproof pressure relief valve according to claim 1, characterized in that: The filter element is in a sheet-like structure.

3. A dustproof pressure relief valve according to claim 1, characterized in that: The area of ​​the filter element is larger than the exhaust port area of ​​the pressure relief valve.

4. A dustproof pressure relief valve according to claim 2 or 3, characterized in that: The filter element is a filter sponge.

5. The dustproof pressure relief valve according to claim 1, characterized in that: The outer side surface of at least one group of opposite sides of the pressure relief valve frame is provided with a snap-fit ​​fixing part, and the snap-fit ​​fixing part is evenly arranged on the outer side surface of the pressure relief valve frame; the snap-fit ​​positions on the protective frame are arranged corresponding to the snap-fit ​​fixing parts.

6. A dustproof pressure relief valve according to claim 1 or 5, characterized in that: The protective frame comprises a bottom surface, and a flange is provided at the edge of the bottom surface, the flange is used to cover the back side of the pressure relief valve frame, the buckle is obtained by extending the flange, and a protrusion is provided on the outer side of the buckle end.

7. A dustproof pressure relief valve according to claim 6, characterized in that: A slot through which the buckle passes is formed inside the buckle fixing portion, and a first opening is provided on the buckle fixing portion. After the buckle extends into the slot, the protrusion abuts against the first opening.

8. A dustproof pressure relief valve according to claim 6, characterized in that: The shape of the bottom surface of the protective frame is adapted to the shape of the back surface of the pressure relief valve frame. The protective frame is provided with a plurality of second openings, and the positions of the second openings correspond to the positions of the blades.

9. The dustproof pressure relief valve according to claim 5, characterized in that: The arrangement positions of the snap-fit ​​fixing parts on different sides of the pressure relief valve frame are different.

10. An automobile, characterized in that: A vehicle body installation interface is provided on the vehicle body, and the vehicle body installation interface is used to install the dustproof pressure relief valve as described in any one of claims 1-9.

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