Air filter assembly and vehicle

Abstract

The utility model relates to the technical field of automobile parts, and particularly provides an air filter assembly and a vehicle. The air filter assembly comprises an upper shell provided with an air outlet, a lower shell provided with an air inlet and a filter element. The filter element is pressed and fastened on the upper shell, and an air outlet side cavity communicated with the air outlet is formed between the filter element and the upper shell; the lower shell is buckled on the upper shell, and an air inlet side cavity communicated with the air inlet is formed between the filter element and the lower shell. According to the air filter assembly, the filter element is pressed and fixed on the upper shell, when the lower shell is detached to clean accumulated dust and foreign matters in the air inlet side cavity, the filter element cannot be separated from the upper shell, and the clean side (namely the air outlet side facing the air outlet side cavity) of the filter element can be prevented from being contaminated by dirty foreign matters; and the risk that the air outlet side of the filter element is polluted when the air filter assembly is disassembled and inspected is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an air filter assembly. Additionally, this utility model also relates to a vehicle. Background Technology

[0002] As the core of a car's air intake system, the main function of the car's air filter assembly is to continuously provide clean air to the engine.

[0003] In existing air filters, the filter element is sandwiched between the upper and lower housings of the air filter, and the upper and lower housings are pressed together at the edge of the filter element to form a seal.

[0004] The upper and lower housings of the air filter are pressed together by tightening screws to compress the edge of the filter element. The flatness requirements of the sealing surfaces of the upper and lower housings of the air filter are high, resulting in higher manufacturing costs.

[0005] Air filter sealing relies on the clamping force between the upper and lower housings of the air filter. Once the sealing surface of the upper or lower housing of the air filter is deformed, the sealing performance of the filter element will be reduced, and air will enter the vehicle through the filter element, causing the filtration effect of the air filter to be greatly reduced, or even the filtration function of the air filter to fail.

[0006] Traditional air filters lack a secondary safety seal in their filter element sealing structure, and improper assembly can lead to filter failure. Furthermore, the maintenance of existing air filters requires a high level of expertise. During disassembly and cleaning of the lower housing, or during filter element replacement and cleaning, foreign matter may contaminate the clean side of the filter element. If a filter element with a contaminated clean side is put into use, the foreign matter adhering to the clean side can enter the engine, thereby damaging the engine cylinders. Utility Model Content

[0007] In view of this, the present invention aims to provide an air filter assembly to reduce the risk of contamination of the air outlet side of the filter element during disassembly and inspection of the air filter assembly.

[0008] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0009] An air filter assembly includes an upper housing with an air outlet, a lower housing with an air inlet, and a filter element; the filter element is press-fitted and fastened to the upper housing, and an air outlet side chamber communicating with the air outlet is formed between the filter element and the upper housing; the lower housing is fastened to the upper housing, and an air inlet side chamber communicating with the air inlet is formed between the filter element and the lower housing.

[0010] Furthermore, the upper housing has a first engaging end face that engages with the lower housing, and the first engaging end face is provided with a filter element mounting groove arranged around the air outlet side chamber, and the filter element is press-fitted into the filter element mounting groove.

[0011] Furthermore, it also includes a square-shaped pressure plate, which is fixed to the upper housing by fasteners and presses against the edges of the filter element.

[0012] Furthermore, the lower housing has a second engaging end face that engages with the upper housing. The second engaging end face is provided with a sealing strip arranged around the air intake side chamber. The sealing strip is sandwiched between the first engaging end face and the second engaging end face.

[0013] Furthermore, the upper housing and the lower housing are fixed together by a snap-fit ​​structure.

[0014] Furthermore, the snap-fit ​​structure includes a plug plate disposed on the upper housing and a snap shoulder disposed on the upper housing, and also includes a slot disposed on the lower housing corresponding to the plug plate and a snap fastener disposed on the lower housing corresponding to the snap shoulder; the plug plate is inserted into the slot and the snap fastener is snapped onto the snap shoulder.

[0015] Furthermore, the bottom of the lower housing is provided with a drain port, and a valve plate is provided at the drain port. The valve plate can be operated to open and close the drain port.

[0016] Furthermore, the valve plate is movably mounted on the lower housing; the air filter assembly also includes a motor mounted on the lower housing, and a transmission mechanism between the motor and the valve plate; the motor drives the valve plate to move via the transmission mechanism to open and close the drain port.

[0017] Furthermore, the transmission mechanism includes a gear mounted on the output shaft of the motor and a rack connected to the valve plate, wherein the gear and the rack are meshed together.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] (1) The air filter assembly of this utility model adopts a snap-fit ​​structure of upper and lower housing, which facilitates the assembly of the air filter assembly and the setting of the filter element between the upper and lower housing; the filter element is pressed and fixed to the upper housing, and when the lower housing is removed to clean the dust and foreign objects in the intake side chamber, the filter element will not detach from the upper housing, which can prevent the clean side of the filter element (i.e. the exhaust side facing the exhaust side chamber) from being contaminated with dirt and foreign objects, which helps to reduce the risk of the exhaust side of the filter element being contaminated when disassembling and inspecting the air filter assembly.

[0020] (2) By setting a first snap-fit ​​end face at one end of the upper housing facing the lower housing, it is convenient to snap-fit ​​with the lower housing to form a closed internal space of the housing; a filter element mounting groove is set on the first snap-fit ​​end face, so that the four sides of the filter element can be placed in the filter element mounting groove, thereby realizing the installation and positioning of the filter element on the upper housing, which provides a good foundation for subsequent press-fitting and fixing.

[0021] (3) A square-shaped pressure plate is used to press the four sides of the filter element into the filter element mounting groove. This not only ensures that the filter element is firmly installed on the upper housing, but also effectively ensures the sealing effect between the filter element and the first snap-fit ​​end face, preventing gas from entering the air outlet chamber around the filter element, thereby ensuring the air filter assembly's air filtration and cleaning effect.

[0022] (4) Corresponding to the first snap-fit ​​end face, a second snap-fit ​​end face is provided on the lower housing, which can effectively snap the first snap-fit ​​end face and the second snap-fit ​​end face together, ensuring the housing sealing and assembly reliability of the air filter assembly. By adding a sealing strip to the second snap-fit ​​end face, a reliable seal is formed between the first snap-fit ​​end face and the second snap-fit ​​end face, preventing external gas from entering the intake side chamber from the gap between the first snap-fit ​​end face and the second snap-fit ​​end face, and ensuring that external air enters the air filter assembly from the defined air inlet.

[0023] (5) The use of a snap-fit ​​structure to assemble the lower housing and the upper housing facilitates the easy disassembly and assembly of the lower housing, making the disassembly, inspection, cleaning and maintenance of the air filter assembly more convenient.

[0024] (6) By setting a plug-in plate on one side of the upper housing and setting clips on the other sides, and setting corresponding buckles and slots, the structure of plugging and snapping ensures the reliability of the installation of the lower housing on the upper housing.

[0025] (7) A drain port is provided at the bottom of the lower housing, and a valve plate that can be controlled to open and close is provided. After the vehicle is turned off, the valve plate is opened and the dust, impurities, etc. accumulated in the intake side chamber can be discharged to the outside of the air filter assembly by their own gravity through the drain port.

[0026] (8) By guiding the valve plate to slide on the lower housing, the horizontal guiding movement of the valve plate on the lower housing can be well realized; then, by driving the valve plate to reciprocate, the opening and closing action of the valve plate can be well realized.

[0027] (9) By using a gear and rack transmission method between the motor and the valve plate, the rotation of the motor can be effectively converted into linear drive, thereby realizing the movement of the valve plate.

[0028] Another objective of this invention is to provide a vehicle equipped with the air filter assembly described herein. The vehicle of this invention possesses the technical advantages of the aforementioned air filter assembly. Attached Figure Description

[0029] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model. The directional terms such as front / back, up / down, etc., used therein are only used to indicate relative positional relationships and do not constitute an improper limitation of this utility model. In the drawings:

[0030] Figure 1 This is a three-dimensional structural diagram of the air filter assembly described in an embodiment of the present utility model;

[0031] Figure 2 This is a front view of the air filter assembly described in an embodiment of the present utility model;

[0032] Figure 3 This is a structural schematic diagram of one side of the snap-fit ​​end face of the upper shell according to an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the upper housing after the filter element has been installed, according to an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the lower shell structure according to an embodiment of the present utility model;

[0035] Figure 6 This is a schematic diagram of the control system configuration of the air filter assembly described in this embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Upper housing; 10. Air outlet; 100. Air outlet side chamber; 11. First snap-fit ​​end face; 110. Filter element mounting groove; 111. Mounting hole; 12. Reinforcing protrusion; 13. Shoulder; 14. Insertion plate;

[0038] 2. Filter element; 20. Pressure plate; 21. Fasteners;

[0039] 3. Lower housing; 30. Air inlet; 300. Air inlet side chamber; 301. Drain outlet; 31. Second snap-fit ​​end face; 310. Sealing strip; 32. Valve plate; 320. Motor; 321. Motor controller; 322. Gear; 323. Rack; 324. Guide groove; 33. Snap-fit; 34. Slot. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] In the description of this utility model, it should be stated that if terms such as "upper," "lower," "left," "right," "front," "back," "inner," and "outer" appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances. The limiting terms such as "first," "second," "A," "B," "C," and "D" appearing in the description of this utility model are merely for distinguishing similar features in different locations, attributions, or uses, in order to avoid ambiguity and confusion, and should not be construed as indicating or implying relative importance.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] Example 1

[0045] This embodiment relates to an air filter assembly that can reduce the risk of contamination on the outlet side of the filter element 2 during disassembly and inspection of the air filter assembly; one exemplary structure is as follows: Figures 1 to 4 As shown.

[0046] Overall, the air filter assembly includes an upper housing 1 with an air outlet 10, a lower housing 3 with an air inlet 30, and a filter element 2. The filter element 2 is press-fitted onto the upper housing 1, forming an outlet-side chamber 100 between the filter element 2 and the upper housing 1, communicating with the air outlet 10. The lower housing 3 is fastened onto the upper housing 1, forming an inlet-side chamber 300 between the filter element 2 and the lower housing 3, communicating with the air inlet 30. The filter element 2 isolates the outlet-side chamber 100 from the inlet-side chamber 300.

[0047] It should be noted that, based on the above-mentioned overall design concept, the technical solution of this utility model can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, after the lower housing 3 and the upper housing 1 are fastened together, a fixed connection between the lower housing 3 and the upper housing 1 can be achieved by means of snap-fit ​​or bolt connection. The press-fitting of the filter element 2 on the upper housing 1 can be achieved through various specific structural forms such as pressure plates, pressure strips, or fastening screws. For the parts required for the implementation of the overall solution but not involved in the above overall setup, reasonable and flexible designs can be made by referring to mature setup methods in the field and the actual situation during implementation. The specific implementation schemes described below in this embodiment are only one of the many solutions that can be formed by the above-mentioned combinations and variations. In actual implementation, those skilled in the art can make flexible adjustments and improvements based on the actual situation. Obviously, the many solutions that can be formed by the above-mentioned combinations and variations, as well as the specific implementation schemes of this embodiment, are all within the protection scope of this utility model.

[0048] Specifically, in this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the upper housing 1 has a first engaging end face 11 that engages with the lower housing 3, and the first engaging end face 11 is provided with a filter element mounting groove 110 arranged around the air outlet side chamber 100. The filter element 2 is press-fitted into the filter element mounting groove 110. By providing the first engaging end face 11 at the end of the upper housing 1 facing the lower housing 3, it is convenient to engage and assemble with the lower housing 3 to form a closed internal space of the housing; by providing the filter element mounting groove 110 on the first engaging end face 11, the four peripheral parts of the filter element 2 can be placed into the filter element mounting groove 110, realizing the installation and positioning of the filter element 2 on the upper housing 1, and providing a good foundation for subsequent press-fitting and fixing.

[0049] Based on the above configuration, preferably, the air filter assembly of this embodiment further includes a square pressure plate 20, which is fixed to the upper housing 1 by fasteners 21, and the pressure plate 20 presses against the edges of the filter element 2. Specifically, an outwardly protruding lug can be provided at the four corners of the pressure plate 20 and the middle of each frame, with a through hole on the lug, and a corresponding mounting hole 111 on the first snap-fit ​​end face 11; in this way, a total of eight fasteners 21 are used, which are respectively passed through the through holes on each lug and screwed into the corresponding mounting holes 111, so that the entire pressure plate 20 can be firmly connected to the upper housing 1. The pressure plate 20 can also provide reliable pressing force to the filter element 2, ensuring the sealing effect between the filter element 2 and the first snap-fit ​​end face 11.

[0050] A square-shaped pressure plate 20 is used to press the four sides of the filter element 2 into the filter element mounting groove 110. This not only ensures that the filter element 2 is firmly installed on the upper housing 1, but also effectively guarantees the sealing effect between the filter element 2 and the first snap-fit ​​end face 11, preventing gas from bypassing the filter element 2 and entering the air outlet side chamber 100, thereby ensuring the air filter assembly's air filtration and cleaning effect.

[0051] In addition, such as Figure 1 and Figure 2 As shown, in order to improve the overall structural strength of the upper shell 1, multiple reinforcing protrusions 12 can be provided on the upper shell 1 to improve the structural performance of the upper shell 1.

[0052] like Figure 5 As shown, the lower housing 3 of this embodiment has a second engaging end face 31 that engages with the upper housing 1. A sealing strip 310 is provided on the second engaging end face 31, surrounding the intake side chamber 300. The sealing strip 310 is sandwiched between the first engaging end face 11 and the second engaging end face 31. Corresponding to the first engaging end face 11, the second engaging end face 31 on the lower housing 3 effectively engages and adheres the first engaging end face 11 and the second engaging end face 31 together, ensuring the housing sealing and assembly reliability of the air filter assembly. By adding a sealing strip 310 to the second engaging end face 31, a reliable seal is formed between the first engaging end face 11 and the second engaging end face 31, preventing external gas from entering the intake side chamber 300 through the gap between the first engaging end face 11 and the second engaging end face 31, ensuring that external air enters the air filter assembly through the defined air inlet 30. The sealing strip 310 described above can provide auxiliary sealing and vibration isolation effects. The sealing strip 310 can be made of rubber, which will not be too high and will not affect the flatness of the interlocking end face between the upper housing 1 and the lower housing 3. The sealing strip 310 can be pre-attached to the second interlocking end face 31, which is convenient for processing and assembly and has low configuration cost.

[0053] Regarding the fixing method between the lower housing 3 and the upper housing 1, there are naturally several different structural solutions to choose from; for example, using a traditional bolt connection. However, with bolt connections, the ends and heads of the bolts are exposed for extended periods. Repeated disassembly during air filter maintenance can damage the bolt surface coating, leading to rust and corrosion that affects bolt lifespan and the aesthetics of the engine compartment interior. In this embodiment, as... Figure 1 and Figure 4 , Figure 5 As shown, the upper housing 1 and the lower housing 3 are fixed together by a snap-fit ​​structure. The snap-fit ​​structure facilitates the assembly of the lower housing 3 and the upper housing 1, making it easier to disassemble and assemble the lower housing 3, and making the disassembly, inspection, cleaning and maintenance of the air filter assembly more convenient.

[0054] Specifically, in this embodiment, the snap-fit ​​structure includes a plug-in plate 14 and a snap-fit ​​shoulder 13 disposed on the upper housing 1; preferably, the plug-in plate 14 is disposed on one side of the upper housing 1, and the snap-fit ​​shoulder 13 is disposed on the other sides of the upper housing 1. Simultaneously, the snap-fit ​​structure also includes slots 34 corresponding to the plug-in plate 14 disposed on the lower housing 3, and snap fasteners 33 corresponding to the snap-fit ​​shoulder 13 disposed on the lower housing 3. Based on the above configuration, each plug-in plate 14 is inserted into the corresponding slot 34, and the snap fastener 33 is snapped onto the corresponding snap-fit ​​shoulder 13.

[0055] By providing a plug-in plate 14 on one side of the upper housing 1 and shoulder plates 13 on the other sides, and corresponding slots 34 and buckles 33, the plug-in and snap-fit ​​structure ensures the reliability of the lower housing 3's installation on the upper housing 1. Specifically, taking a rectangular box as an example where both the upper housing 1 and lower housing 3 are rectangular, a shoulder plate 13 can be provided on each of the three sides of the upper housing 1, and a buckle 33 can be provided on each of the three sides of the lower housing 3. The buckles 33 can be integrally injection molded at the edge of the lower housing 3. A thinning structure is used between the base of the three buckles 33 and the edge of the lower housing 3, allowing the buckles 33 to swing relative to the lower housing 3, enabling the buckles 33 to engage or disengage with the shoulder plates 13. During assembly, the first snap-fit ​​end face 11 first abuts against the second snap-fit ​​end face 31, with the plug-in plate 14 on one side offset from the slot 34; then the upper housing 1 moves along the insertion direction, allowing the plug-in plate 14 to be inserted into the corresponding slot 34. Then, the buckles 33 on the other three sides are fastened to their corresponding shoulders 13 to prevent the upper housing 1 from moving in the insertion direction, thereby ensuring the ease and reliability of assembly between the upper housing 1 and the lower housing 3.

[0056] In response to the issue that the side of the filter element 2 facing the intake chamber 300 in the air filter assembly tends to accumulate a lot of dust and impurities, the lower housing 3 often needs to be removed to clean the dust adhering to the side of the filter element 2 facing the intake chamber 300. As can be seen from the above configuration, in this embodiment of the air filter assembly, during the process of removing the lower housing 3 to clean the dust and impurities on the filter element 2 and in the intake chamber 300, the filter element 2 remains fixed to the upper housing 1, and its clean side (the side facing the exhaust chamber 100) is not exposed, thus preventing impurities from adhering to the clean side of the filter element 2. In traditional air filter assemblies, the filter element 2 is sandwiched between the upper housing 1 and the lower housing 3. Once the lower housing 3 is removed, the filter element 2 will fall off. If the disassembly personnel are not careful, the clean side of the filter element 2 can easily become contaminated with dust and impurities. After reassembly, these impurities will enter the engine under the influence of airflow. Over time, this can cause cylinder scoring, leading to oil burning and power loss. In severe cases, it can even cause the engine to stall and become unusable, posing a significant driving safety risk. The air filter assembly of this embodiment effectively solves this problem.

[0057] In addition, such as Figure 5 As shown, the lower housing 3 of this embodiment has a drain port 301 at its bottom, and a valve plate 32 is provided at the drain port 301. The valve plate 32 is controlled to open and close the drain port 301. With the drain port 301 at the bottom of the lower housing 3 and the controllable valve plate 32, after the vehicle is turned off, the valve plate 32 is opened, allowing dust and impurities accumulated in the intake side chamber 300 to fall through the drain port 301 and be discharged to the outside of the air filter assembly by gravity. When the vehicle is in extremely cold regions, the low intake temperature can easily cause the crankcase ventilation system to freeze. Opening the drain port 301 allows air from the engine compartment to enter. Opening the valve plate 32 at this time allows the warmer air from the engine compartment to be introduced into the air filter assembly, thereby increasing the intake temperature and mitigating or avoiding the risk of the crankcase ventilation system freezing.

[0058] There are, of course, various structural solutions available for the specific operation of the valve plate 32. In this embodiment, such as... Figure 5 and Figure 6 As shown, the valve plate 32 is movably mounted on the lower housing 3. The air filter assembly also includes a motor 320 mounted on the lower housing 3 and a transmission mechanism disposed between the motor 320 and the valve plate 32. The motor 320 drives the valve plate 32 to move in a guided manner through the transmission mechanism, thereby opening or closing the drain port 301. Specifically, two guide grooves 324 can be arranged in parallel on the lower housing 3, and the two sides of the valve plate 32 can be guided and slidably mounted in the guide grooves 324 on both sides, thereby effectively realizing the horizontal guided movement of the valve plate 32 on the lower housing 3. Furthermore, by driving the valve plate 32 to move in a guided reciprocating motion through the motor 320, the opening and closing action of the valve plate 32 can be effectively realized.

[0059] Specifically, the transmission mechanism in this embodiment includes a gear 322 mounted on the output shaft of the motor 320 and a rack 323 connected to the valve plate 32, with the gear 322 and rack 323 meshing together. By employing a gear and rack transmission method between the motor 320 and the valve plate 32, the rotation of the motor 320 can be effectively converted into linear drive, thereby achieving the movement of the valve plate 32.

[0060] The aforementioned motor 320 can be controlled by a motor controller 321, which can be conveniently located on the lower housing 3. The motor controller 321 can be connected to the vehicle's central control unit. By setting a timed opening program instruction in the central control unit or by setting corresponding manual control buttons on the central control screen, the opening and closing function of the valve plate 32 can be achieved. The programming and setting of the aforementioned valve plate 32 control program instructions can be reasonably configured according to the opening timing of the valve plate 32 or external temperature conditions, etc. Those skilled in the art can complete the relevant settings based on conventional settings in the field. The system control architecture can refer to... Figure 6 The control strategy architecture is used to configure the relevant systems.

[0061] In summary, the air filter assembly of this embodiment adopts a snap-fit ​​structure of upper housing 1 and lower housing 3, which facilitates the assembly of the air filter assembly and the placement of the filter element 2 between the upper housing 1 and the lower housing 3. The filter element 2 is press-fitted and fixed to the upper housing 1. When the lower housing 3 is removed to clean the dust and foreign objects in the intake side chamber 300, the filter element 2 will not detach from the upper housing 1. This avoids the clean side of the filter element 2 (i.e., the outlet side facing the outlet side chamber 100) from being contaminated with dirt and foreign objects, which helps to reduce the risk of contamination of the outlet side of the filter element 2 when disassembling and inspecting the air filter assembly.

[0062] Example 2

[0063] This embodiment relates to a vehicle, which is equipped with the air filter assembly provided in Embodiment 1.

[0064] The air filter assembly of this invention, when installed in a vehicle, offers advantages over traditional air filter sealing structures, including more reliable sealing performance and safer, more convenient disassembly and cleaning. With a valve plate 32 installed in the lower housing 3, the drain port 301 at the bottom of the lower housing 3 can be intelligently opened and closed based on ambient temperature to improve engine intake air temperature. Furthermore, by actively opening the second snap-fit ​​end face 31, the drain port 301 can also actively expel accumulated dust. The filter element 2 is pressed into the filter element mounting groove 110 on the upper housing 1 by the pressure plate 20, resulting in more uniform clamping force. Even if gaps appear between the snap-fit ​​end faces of the upper housing 1 and lower housing 3 due to deformation, air will not bypass the filter element 2 and enter the engine. The snap-fit ​​structure between the lower housing 3 and the upper housing 1 also solves the problems of inconvenient disassembly and assembly of the lower housing 3 and the susceptibility to rusting when using bolts and screws.

[0065] The above description is merely a preferred embodiment of this utility model. Detailed explanations of configurations, examples of specific structural arrangements, and descriptions of assembly and connection methods are provided to ensure sufficient disclosure so that those skilled in the art can better implement this utility model, and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An air filter assembly, characterized in that: It includes an upper housing (1) with an air outlet (10), a lower housing (3) with an air inlet (30), and a filter element (2); The filter element (2) is press-fitted and fastened to the upper housing (1), and an outlet side chamber (100) communicating with the air outlet (10) is formed between the filter element (2) and the upper housing (1); The lower housing (3) is fastened to the upper housing (1), and an air intake side chamber (300) communicating with the air inlet (30) is formed between the filter element (2) and the lower housing (3).

2. The air filter assembly according to claim 1, characterized in that: The upper housing (1) has a first engaging end face (11) that engages with the lower housing (3). The first engaging end face (11) is provided with a filter element mounting groove (110) arranged around the air outlet side chamber (100). The filter element (2) is press-fitted into the filter element mounting groove (110).

3. The air filter assembly according to claim 2, characterized in that: It also includes a square-shaped pressure plate (20), which is fixed to the upper housing (1) by fasteners (21) and presses against the edge of the filter element (2).

4. The air filter assembly according to claim 2, characterized in that: The lower housing (3) has a second engaging end face (31) that engages with the upper housing (1). The second engaging end face (31) is provided with a sealing strip (310) arranged around the air intake side chamber (300). The sealing strip (310) is sandwiched between the first engaging end face (11) and the second engaging end face (31).

5. The air filter assembly according to claim 1, characterized in that: The upper housing (1) and the lower housing (3) are fixed together by a snap-fit ​​structure.

6. The air filter assembly according to claim 5, characterized in that: The snap-fit ​​structure includes a plug plate (14) disposed on the upper housing (1), and a snap shoulder (13) disposed on the upper housing (1), and also includes a slot (34) disposed on the lower housing (3) corresponding to the plug plate (14), and a buckle (33) disposed on the lower housing (3) corresponding to the snap shoulder (13); The plug plate (14) is inserted into the slot (34), and the buckle (33) is engaged with the shoulder (13).

7. The air filter assembly according to any one of claims 1 to 6, characterized in that: The bottom of the lower housing (3) is provided with a drain port (301), and a valve plate (32) is provided at the drain port (301). The valve plate (32) can be operated to open and close the drain port (301).

8. The air filter assembly according to claim 7, characterized in that: The valve plate (32) is movably mounted on the lower housing (3); The air filter assembly also includes a motor (320) mounted on the lower housing (3) and a transmission mechanism disposed between the motor (320) and the valve plate (32); The motor (320) drives the valve plate (32) to move through the transmission mechanism to open and close the drain port (301).

9. The air filter assembly according to claim 8, characterized in that: The transmission mechanism includes a gear (322) mounted on the output shaft of the motor (320) and a rack (323) connected to the valve plate (32), wherein the gear (322) and the rack (323) are meshed together.

10. A vehicle, characterized in that: The vehicle is equipped with an air filter assembly as described in any one of claims 1 to 9.

Images