Air filter and automobile

Abstract

The invention discloses an air filter and an automobile, and belongs to vehicle engineering. The air filter comprises a shell, the interior of the shell is provided with a filter cavity, the shell comprises an upper shell and a bottom shell which are matched with each other, and the upper shell and the bottom shell are provided with a first ventilation opening and a second ventilation opening which are communicated with the filter cavity respectively; the clamping mechanism comprises a first clamping piece and a second clamping piece, the first clamping piece is arranged on the bottom shell, the second clamping piece is arranged on the upper shell, and the first clamping piece and the second clamping piece are matched and abut against each other so as to seal the filtering cavity; and the filter paper is clamped between the first clamping piece and the second clamping piece and divides the filter cavity. The filter element of the air filter and the automobile is convenient to replace and low in cost.

Description

Technical Field

[0001] The present application belongs to the field of vehicle engineering technology, and in particular relates to an air filter and a vehicle. Background Art

[0002] Automobile air filters mainly include two types: air filters and air conditioning filters, which respectively undertake the functions of engine intake filtration and in-vehicle air purification. They are used to filter impurities in the air to protect the engine and other equipment, and can provide a clean environment for the space inside the vehicle.

[0003] The existing air filter includes a housing with an air inlet and outlet and a filter element, and the filter element is arranged between the air inlet and outlet to filter out impurities when the air passes through. Usually, due to the accumulation of impurities, the filter element also needs to be disassembled and cleaned or replaced regularly. When replacing the filter element, it is necessary to disassemble the housing and then replace the filter element as a whole. However, due to the limited assembly space in the vehicle, the replacement of the air filter is inconvenient and difficult to maintain and replace, and usually requires professional implementation. On the other hand, the filter element includes an integrally encapsulated filter material layer, a sealing structure, and a frame structure, which need to be replaced as a whole, which greatly increases the overall cost of use. Summary of the Invention

[0004] This application provides an air filter and a car, which aims to at least to some extent solve the technical problems of inconvenience in replacing the filter element, the need for overall replacement, and high costs.

[0005] In one aspect of an embodiment of the present application, an air filter is provided, comprising:

[0006] A housing having a filter cavity therein, the housing comprising an upper shell and a bottom shell that match each other, and a first vent and a second vent connected to the filter cavity are respectively formed on the upper shell and the bottom shell;

[0007] The clamping mechanism includes a first clamping member and a second clamping member, wherein the first clamping member is disposed on the bottom shell, and the second clamping member is disposed on the upper shell, and the first clamping member and the second clamping member are matched and abutted to seal the filter cavity;

[0008] The filter paper is clamped between the first clamping member and the second clamping member and separates the filter cavity.

[0009] In some embodiments, a plurality of first bosses are spaced apart on the first clamping member, a plurality of second bosses are spaced apart on the second clamping member, and gaps formed by the spaced-apart arrangement of the plurality of first bosses match and engage with the plurality of second bosses to clamp the filter paper.

[0010] In some embodiments, the clamping mechanism further includes a plurality of first support shafts, both ends of the first support shafts are respectively connected to two opposite first bosses, and the first support shafts abut against one side surface of the filter paper.

[0011] In some embodiments, the first clamping mechanism further comprises:

[0012] a bracket, arranged on the bottom shell;

[0013] The second support shaft is arranged on the bracket, and the second support shaft abuts against the other side surface of the filter paper.

[0014] In some embodiments, the plurality of first bosses are relatively arranged in at least two rows, the two ends of the first support shaft are respectively connected to the first bosses in two adjacent rows, and a second boss is engaged between any two adjacent first bosses;

[0015] The second support shaft is located between two adjacent first bosses and abuts against the second boss, and the first support shaft is arranged parallel to the second support shaft, the second support shaft is close to the bottom of the first boss, and the first support shaft is close to the top of the first boss.

[0016] In some embodiments, a sealing block is protruding from the second support shaft, and the sealing block is embedded between two adjacent first bosses. The filter paper is tightly clamped between the bottom gap of the two adjacent first bosses and the sealing block. Moreover, the shape of the sealing block is adapted to the shape of the bottom gap of the two adjacent first bosses, and the sealing block abuts against the second boss.

[0017] In some embodiments, a waist-shaped hole is provided on the bracket, and both ends of the second support shaft are movably embedded in the waist-shaped hole, and the long axis direction of the waist-shaped hole is arranged along the buckling direction of the upper shell and the bottom shell.

[0018] In some embodiments, the air filter further includes a filter paper holder, which is disposed on the bottom shell or the upper shell, and at least a portion of the filter paper is stored in the filter paper holder, and the filter paper holder can be unfolded and pulled out along the set direction.

[0019] In some embodiments, the filter paper holder includes a first roller and a second roller, both ends of the filter paper are respectively wound on the first roller and the second roller, and the first roller and the second roller are arranged on the bottom shell or the upper shell.

[0020] Another aspect of the embodiments of the present application further provides an automobile comprising the air filter.

[0021] The embodiments of the present application have at least the following beneficial effects:

[0022] The air filter and automobile provided in the embodiments of the present application include a shell with a filter cavity therein, a clamping mechanism and filter paper. The shell is configured as a snap-fit ​​upper shell and a bottom shell, and a first vent and a second vent are respectively provided on the upper shell and the bottom shell. The clamping mechanism includes a first clamping member and a second clamping member that match each other. The first clamping member and the second clamping member are respectively correspondingly arranged on the upper shell and the bottom shell. The filter paper is clamped between the first clamping member and the second clamping member to seal the gap between the upper shell and the bottom shell, thereby sealing the filter cavity and dividing the filter cavity into two chambers. When the air flow enters and exits the filter cavity through the first vent and the second vent, impurities can be filtered out by the filter paper, thereby realizing the air filtration function. Among them, by clamping the filter paper between the upper shell and the bottom shell, the filter paper replacement operation can be greatly simplified and the replacement efficiency can be improved; at the same time, the filter paper in the air filter is only clamped and sealed by two matching clamping parts, which greatly simplifies the filter element structure. The air filter maintenance and update can be completed by only replacing the filter paper. Compared with the overall replacement of an independent filter element composed of filter material, seals and structural frame, the method of only replacing the filter paper in this embodiment reduces the use cost to a certain extent, especially for equipment with higher filtration level requirements such as the cathode filter of hydrogen fuel cell vehicles, the maintenance and replacement frequency is higher, and the cost advantage is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic structural diagram of an air filter in an embodiment of the present application is shown;

[0025] Figure 2 Shown Figure 1 Exploded view of the air filter in Figure 1;

[0026] Figure 3 Shown Figure 1 A cross-sectional view of the air filter in FIG.

[0027] Figure 4 Shown Figure 1 Schematic diagram of the structure of the bottom shell of the air filter;

[0028] Figure 5 Shown Figure 1 Schematic diagram of the structure of the upper shell of the air filter;

[0029] Figure 6 Shown Figure 1Schematic diagram of the structure of the filter paper of the air filter;

[0030] Figure 7 Shown Figure 1 Schematic diagram of the arrangement of the first support shaft and the second support shaft of the air filter;

[0031] Figure 8 Shown Figure 1 Schematic diagram of the matching state of the first support shaft and the second support shaft of the air filter and the first boss;

[0032] Figure 9 Shown Figure 1 A schematic structural diagram of the first support shaft of the air filter;

[0033] Figure 10 Shown Figure 1 A schematic structural diagram of the second support shaft of the air filter;

[0034] Figure 11 Shown Figure 1 Schematic diagram of the cooperation state between the second support shaft and the filter paper of the air filter;

[0035] Figure 12 Shown Figure 1 Schematic diagram of the cooperation status of the second support shaft and bracket of the air filter.

[0036] Figure Number:

[0037] 1-housing, 1a-filter chamber, 11-bottom shell, 111-first vent, 12-upper shell, 121-second vent, 13-elastic element, 14-guide seat, 15-thrust block;

[0038] 2-clamping mechanism, 21-first clamping member, 211-first boss, 22-second clamping member, 221-second boss, 23-first support shaft, 231-first sleeve, 24-second support shaft, 241-sealing block, 242-second sleeve, 243-limiting block, 25-bracket, 251-waist hole, 26-sealing member, 261-sealing gasket;

[0039] 3- filter paper;

[0040] 4-filter paper holder, 41-first reel, 411-first rotating bracket, 42-second reel, 421-second rotating bracket;

[0041] 5-locking mechanism, 51-locking pin, 52-locking catch. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] In addition, this application may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0044] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0045] Automotive air filters primarily fall into two categories: air filters and cabin air filters. They are used to provide clean air to onboard equipment such as the engine, as well as the interior of the vehicle. Existing air filters are equipped with independent filter elements, specifically composed of filter material, seals, and a frame structure. Maintenance and replacement require the entire element to be replaced, resulting in high costs. This is especially true for devices such as the cathode filter in hydrogen fuel cell vehicles, which require high filtration levels. Furthermore, the limited space in the vehicle and the large size of the filter element make replacement of the entire element inconvenient.

[0046] To this end, the embodiments of the present application provide an air filter and a vehicle, which aim to solve, to a certain extent, the technical problems of inconvenient replacement and maintenance of air filter cartridges and high usage costs, and achieve the technical effects of simplifying the air filter cartridge update and maintenance operations, improving operational efficiency, and reducing usage costs.

[0047] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 In some embodiments, the air filter includes a housing 1, a clamping mechanism 2, and filter paper 3. A filter chamber 1a is disposed within the housing 1. A first vent 111 and a second vent 121 are defined on the housing 1. Airflow can enter and exit the filter chamber 1a through the first vent 11 and the second vent 12. The clamping mechanism 2 is disposed on the housing 1. The filter paper 3 is clamped and secured by the clamping mechanism 2, with at least a portion of the filter paper 3 located within the filter chamber 1a. Airflow entering and exiting the filter chamber 1a passes through the filter paper 3, achieving a filtering function.

[0048] The housing 1 is the main body of the air filter and includes a bottom housing 11 and an upper housing 12 that fit together. The inner cavities of the bottom housing 11 and the upper housing 12 generally constitute the filter chamber 1a. The first vent 111 can be provided on the bottom housing 11, and the second vent 121 can be provided on the upper housing 12, allowing airflow to flow between the inner cavities of the bottom housing 11 and the upper housing 12.

[0049] The clamping mechanism 2 includes a first clamping member 21 and a second clamping member 22, and the first clamping member 21 is arranged on the bottom shell 11, and the second clamping member 22 is arranged on the upper shell 12, and the first clamping member 1 and the second clamping member 22 are matched and abutted to seal the gap between the bottom shell 11 and the upper shell 12, thereby sealing the filter chamber 1a.

[0050] At least a portion of the filter paper 3 is disposed in the filter cavity 1a, and the filter paper 3 is clamped between the first clamping member 21 and the second clamping member 22, thereby fixing the filter paper 3 in the filter cavity 1a and separating the filter cavity 1a, so that the airflow flowing between the inner cavity of the bottom shell 11 and the upper shell 12 needs to pass through the filter paper 3, thereby being able to stably filter out impurities.

[0051] It is worth noting that when disassembling and assembling the filter paper 3, the first clamping member 21 and the second clamping member 22 can be separated by releasing the lock of the bottom shell 11 and the upper shell 12, thereby releasing the filter paper 3, pulling out the filter paper 3 and replacing it with a new one; then locking the bottom shell 11 and the upper shell 12 so that the first clamping member 21 and the second clamping member 22 clamp and press the filter paper 3, the replacement of the filter paper 3 can be completed, and the entire operation process only involves the replacement of the filter paper 3, making the operation process simple and efficient; and the consumables are only the filter paper 3, and do not involve seals and frames in the filter element and other components, which reduces the cost of use to a certain extent.

[0052] In some embodiments, considering that the bottom shell 11 and the upper shell 12 are fixed by snapping and splicing, that is, the bottom shell 11 and the upper shell 12 both have an annular opening; therefore, in order to achieve a matching seal, the first clamping member 21 and the second clamping member 22 are both annular-like members, so that the first clamping member 21 and the second clamping member 22 can be used to seal the opening area of ​​the bottom shell 11 and the upper shell 12. On the other hand, the first clamping member 21 and the second clamping member 22 clamp and fix the filter paper 3, and stably constrain an entire area, separating the filter chamber 1a, thereby ensuring that when the airflow passes through the filter paper 3, the filter paper 3 can maintain a stable expanded state, ensuring the stability of the filtering function.

[0053] See also Figure 2 、 Figure 3 and Figure 6 In some embodiments, considering that the service life and filtering capacity of the filter paper 3 are positively correlated with its area, the service life of the filter paper 3 can be increased to a certain extent by increasing the area of ​​the filter paper 3, thereby reducing the replacement frequency.

[0054] Generally speaking, since the bottom shell 11 and the upper shell 12 both have a limited annular rupture area, the ventilation area is also limited. The edge of the filter paper 3 can be clamped by the clamping mechanism 2, and the middle area of ​​the filter paper 3 can be set into a cap shape, that is, by setting the middle area of ​​the filter paper 3 into a certain degree of inflated bag-like structure, a larger filtration area can be obtained under limited ventilation area conditions.

[0055] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In some embodiments, in order to obtain a larger filtration area, the filter paper 3 can be set to a folded form, such as the filter paper 3 can be set to a wavy shape or other three-dimensional form; that is, by bending and extending the filter paper 3 to a certain extent in its thickness direction, the overall area of ​​the filter paper 3 is expanded, that is, the overall filtration area is increased by increasing the deformation in the thickness direction.

[0056] In some embodiments, considering that the filter paper 3 needs to withstand a large filtering wind pressure and the shape-retention ability of the filter paper 3 in the folded form is not ideal, in order to ensure the stability of its shape, the folded shape of the filter paper 3 can be maintained through the structural design of the first clamping member 21 and the second clamping member 22.

[0057] Specifically, a plurality of first bosses 211 are spaced apart on the first clamping member 21, and correspondingly, a plurality of second bosses 221 are spaced apart on the second clamping member 22, so that the plurality of first bosses 211 are spaced apart to form a plurality of spaced apart gaps, which can be matched and engaged with the plurality of second bosses 221, that is, the plurality of first bosses 211 and the plurality of second bosses 221 can be correspondingly and staggeredly engaged to complete the stable sealing of the first clamping member 21 and the second clamping member 22.

[0058] Correspondingly, the filter paper 3 can also be clamped and pressed between the multiple first bosses 211 and the multiple second bosses 221 that are staggered and engaged, so that the shape of the filter paper 3 is equivalent to the gap shape between the multiple first bosses 211 and the multiple second bosses 221 that are staggered and engaged, that is, it is roughly in an undulating wave shape.

[0059] See also Figure 3 and Figure 5 In some embodiments, considering that the filter paper 3 is soft and easily deformed, but the first clamping member 21 and the second clamping member 22 are made of high hardness and stable in shape, in order to ensure the sealing performance of the clamping area of ​​the filter paper 3, a sealing member 26 may be provided at the engaging portion of the first boss 211 and / or the second boss 221 to seal the gap with the filter paper 3 through contact with the sealing member.

[0060] Generally speaking, the sealing member 26 can be configured as a material with a certain hardness and elastic deformation ability, such as hard rubber, various sealing foam materials, etc.

[0061] In some embodiments, considering the large internal and external pressure difference during the operation of the air filter, in order to avoid interface leakage, the gap between the multiple first bosses 211 and the multiple second bosses 221 should not be too large, and in order to ensure the sealing reliability, the seal 26 can be set to a sealing gasket 261 with a smaller thickness but a certain area, thereby improving the sealing strength and reliability by expanding the contact sealing surface, and by reducing the thickness of the seal, enhancing the pressure resistance and reducing the risk of interface leakage and pressure relief.

[0062] Generally speaking, the sealing gasket 261 can be configured to be wavy in shape, so as to match the shapes of the first boss 211 and the second boss 221 that are spaced apart.

[0063] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In some embodiments, the first boss 211 and the second boss 221 can be set as triangular bosses, so that the gap between the first clamping member 21 and the second clamping member 22 is roughly sawtooth-shaped, and the filter paper 3 is also roughly sawtooth-shaped.

[0064] It is worth noting that the zigzag filter paper structure can utilize the stability of the triangle so that the filter paper 3 has a certain resistance when facing the airflow pressure, thereby maintaining the overall shape stability of the filter paper 3.

[0065] See also Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 In some embodiments, since the filter paper 3 has a certain area, when it is subjected to impact, the farther the area is from the clamping mechanism 2, the worse its shape retention ability is. For this reason, a support structure can be set in the clamping mechanism 2 to support the filter paper 3 and maintain the stability of the shape and filtering effect.

[0066] Specifically, the clamping mechanism 2 further includes a first support shaft 23 , and both ends of the support shaft 23 can be connected to two opposite first bosses 211 in the first clamping member 21 , thereby supporting the filter paper 3 .

[0067] Generally speaking, the first support shaft 23 can be provided in multiple numbers to support various areas of one side surface of the filter paper 3. In order to enhance the shape retention ability of the filter paper 3, the first support shaft 23 can be abutted against the leeward side of the filter paper 3.

[0068] In some embodiments, in order to further improve the shape-retaining ability of the filter paper 3, the clamping mechanism 2 may also include a second support shaft 24 to support the other side surface of the filter paper 3, that is, through the second support shaft 24 and the first support shaft 21, the two side surfaces of the filter paper 3 abut and support the filter paper 3 to maintain its shape and position stability.

[0069] Specifically, the clamping mechanism 2 further includes a bracket 25 . The bracket 25 is disposed on the bottom shell 11 , and the second support shaft 24 is disposed on the bracket 25 .

[0070] In some embodiments, in order to maintain the clamping stability of the first support shaft 23 and the second support shaft 24 on the filter paper 3, the first support shaft 23 and the second support shaft 24 may have a certain drop in the thickness direction of the filter paper 3, and the first support shaft 23 is closer to the top of the first boss 211, and the second support shaft 24 is closer to the bottom of the first boss 211, thereby applying a stable clamping force to the filter paper 3.

[0071] That is, the first support shaft 23 pushes the filter paper 3 away from the bottom shell 11 and maintains it at a certain height, and the second support shaft 24 presses the filter paper 3 close to the bottom shell 11 to stably tighten and clamp the filter paper 3.

[0072] In some embodiments, the first support shaft 23 can be offset from the second support shaft 24 in the thickness direction to avoid the first support shaft 23 and the second support shaft 24 from directly abutting each other, so that when the filter paper 3 is clamped, a stable tensioning force can be applied to the filter paper 3 to promote the filter paper to maintain a stable expanded state, thereby maintaining the stability of the filtering performance of the filter paper 3.

[0073] In some embodiments, the first support shaft 23 and the second support shaft 24 can also be arranged opposite each other in the thickness direction to maintain a stable clamping force, so that the position of the filter paper 3 remains stable, avoiding local impact and swinging, which helps to reduce noise.

[0074] In some embodiments, in order to keep the filter paper 3 in a stable wavy-like shape, the multiple first bosses 211 can be relatively arranged in at least two rows, and correspondingly, the multiple second bosses 221 can also be arranged in two opposite rows, with one first boss 211 provided between any two of the second bosses 221, thereby maintaining the staggered engagement of the multiple second bosses 221 and the multiple first bosses 211, and maintaining the filter paper 3 in a regular wavy-like shape.

[0075] Correspondingly, the two ends of the first support shaft 23 are respectively connected to two adjacent rows of the first bosses 211, that is, the two opposite first bosses 211 in the two rows of the first bosses 211 are respectively connected to the two ends of the first support shaft 23; thus, multiple first support shafts 23 are arranged in parallel, so that the first support shaft 23 maintains uniform support for the filter paper 23, which helps to disperse the wind pressure and maintain the stability of the unfolded shape and position of the filter paper 3, thereby maintaining the stability of the filtering capacity.

[0076] The second support shaft 24 is correspondingly arranged between the two first bosses 211 and is arranged parallel to the first support shaft 23, so that multiple second support shafts 24 are arranged in parallel, so that the second support shaft 24 maintains uniform support for the filter paper 23, and cooperates with multiple first support shafts 23 to maintain the stability of the unfolded shape and position of the filter paper 3, thereby maintaining the stability of the filtering capacity.

[0077] Among them, since the second support shaft 24 is close to the bottom of the first boss 211 and the first support shaft 23 is close to the top of the first boss 211, the filter paper 3 can be evenly tensioned by multiple second support shafts 24 and multiple first support shafts 23, thereby helping to maintain the shape and position of the filter paper 3.

[0078] In some embodiments, the air filter's inlet and outlet are already defined in the assembled state, i.e., the inlet and outlet of the first and second vents 11, 12 are already determined. Accordingly, one of the two sides of the filter paper 3 serves as the windward side, while the other serves as the leeward side. The cavity on the leeward side, through which filtered air flows, requires a strict seal.

[0079] Therefore, when the second support shaft 24 is located on the leeward side of the filter paper 3, the gap between the second support shaft 24 and the first bosses 211 on both sides thereof will increase the risk of unreliable sealing to a certain extent, which may easily cause air leakage and pressure relief.

[0080] In order to enhance the sealing reliability between the second support shaft 24 and the first bosses 211 on both sides thereof, a sealing pressure block 241 may be protruded from the circumferential side wall of the second support shaft 24. The outer shape of the sealing pressure block 241 is adapted to the gap shape between the two adjacent first bosses 211, so that the sealing pressure block 241 can tighten and clamp the filter paper 3 between the bottom gap between the two adjacent first bosses 211 and the sealing pressure block 241, thereby ensuring sealing reliability.

[0081] Accordingly, the sealing block 241 is in stable contact with the second boss 221, thereby maintaining contact sealing. Generally speaking, a sealing material piece can also be provided between the sealing block 241 and the second boss 221 to enhance the contact sealing performance.

[0082] In some embodiments, considering that the first support shaft 23 and the second support shaft 24 are located on both sides of the filter paper 3, when the filter paper 3 is installed, it is necessary to pass through the first support shaft 23 and the second support shaft 24 arranged in an staggered manner in sequence, and then be tightened and unfolded. When the filter paper 3 is removed, it is also necessary to pull the filter paper 3 through the first support shaft 23 and the second support shaft 24 arranged in an staggered manner. There is a certain contact friction resistance, which makes operation inconvenient.

[0083] To this end, the second support shaft 24 can be set to a movable state along the thickness direction of the filter paper 3, so that the distance between the first support shaft 23 and the second support shaft 24 in the thickness direction of the filter paper 3 can be reduced to a certain extent, so as to reduce the movement amplitude of the paper threading operation, thereby reducing the difficulty of the paper threading operation; and to a certain extent, the contact area between the filter paper 3 and the support shaft 24 is reduced, the sliding friction is reduced, and it is convenient to install and replace the filter paper.

[0084] The second support shaft 24 is pressed between the second boss 221 and two adjacent first bosses 211 , and the second boss 221 provides a pressing force to stably press the sealing block 241 and restrict its movement.

[0085] In some embodiments, a waist-shaped hole 251 can be opened on the bracket 25, and the two ends of the second support shaft 24 can be movably inserted into the waist-shaped hole 251; and the second support shaft 24 can only move along the long axis direction of the waist-shaped hole 251, limiting the radial swing amplitude and ensuring the reliability of support and sealing.

[0086] Generally speaking, the long axis direction of the waist-shaped hole 251 can be roughly set along the buckling direction of the upper shell 12 and the bottom shell 11; wherein the thickness direction of the filter paper 3 can also be set along the buckling direction of the upper shell 12 and the bottom shell 11, so as to press the filter paper 3 when locking the upper shell 12.

[0087] In some embodiments, considering that during the process of installing and replacing the filter paper 3 , sliding friction exists between the filter paper 3 and the plurality of first support shafts 23 and the second support shafts 24 , the movement resistance of the filter paper 3 is increased to a certain extent.

[0088] In order to reduce the operating resistance, the first sleeve 231 can be rotatably sleeved on the outside of the first support shaft 23, and the second sleeve 242 can be rotatably sleeved on the second support shaft 24, so that the movement resistance of the filter paper 3 can be reduced by rotating the first sleeve 231 and the second sleeve 241.

[0089] Generally speaking, in order to reduce the eccentric swing of the first sleeve 231 and the second sleeve 242, rolling bearings can be set in the first sleeve 231 and the second sleeve 242, and the first support shaft 23 and the second support shaft 24 are rotated around the central axis through the rolling bearings to reduce the amplitude of the eccentric swing.

[0090] In some embodiments, considering that the second support shaft 24 is a movable part and there is space for axial movement, in order to maintain the position of the second support shaft 24, a limit block 243 can be set on the circumferential surface of the two ends of the second support shaft 24, and the limit block 243 is set between the bracket 25 and the first boss 211 to limit the axial movement of the second support shaft 24.

[0091] Generally speaking, the bracket 25 can be configured as two oppositely disposed vertical plates, and is disposed at both axial ends of the second support shaft 24 .

[0092] In some embodiments, in order to avoid damaging the filter paper 3, the first support shaft 23 and the second support shaft 24 can be set as variable-section shafts, wherein the shaft radius at both ends is larger than the shaft radius at the middle, and the outer diameter of the sleeve is equivalent to the shaft radius at both ends of the first support shaft 23 and the second support shaft 24.

[0093] Similarly, the first support shaft 23 can be correspondingly arranged at the top of the first boss 211, or the circumferential surfaces of the two end portions of the first support shaft 23 are roughly flush with the top surface of the first boss 211, and the circumferential surfaces of the two end portions of the second support shaft 24 are also roughly flush with the surface of the portion of the sealing block 241 that contacts the filter paper 3, thereby avoiding a large height difference that affects the shape of the filter paper 3.

[0094] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6In some embodiments, considering that the filter paper 3 needs to be pulled through the clamping mechanism 2 during the replacement process, in order to improve the convenience of operation, the filter paper 3 can be provided as a continuous filter paper assembly having a certain length. When replacing the filter paper 3, the filter paper 3 only needs to be pulled to remove the old filter paper 3 from the clamping mechanism 2 and simultaneously insert the new filter paper 3 into the clamping mechanism 2 to complete the replacement operation. The entire process is simple and easy, and requires little operating space, making it particularly suitable for working conditions with high equipment integration density.

[0095] Generally speaking, the air filter is also provided with a filter paper seat 4, and the filter paper 3 is stored in the filter paper seat 4. When the filter paper 3 is pulled by an external force along a set direction, it can be pulled out from the filter paper seat 4 and unfolded synchronously, thereby stably entering the clamping mechanism 2 and maintaining stable contact with the first support shaft 23 and the second support shaft 24.

[0096] Among them, the direction in which the filter paper 3 is pulled out of the filter paper seat 4 can be roughly set to the arrangement direction of the first support shaft 23 and the second support shaft 24 to ensure that the filter paper 3 can stably cover the circumference of the first support shaft 23 and the second support shaft 24 after being unfolded.

[0097] Typically, the filter paper holder 4 can be disposed on the bottom shell 11 , and of course can also be disposed on the upper shell 12 according to space requirements.

[0098] In some embodiments, the filter paper holder 4 can be set as a box body, and the filter paper 3 can be set as multiple filter paper units with the same specifications, which are folded back and forth and stacked in the box body. The filter paper can be replaced by pulling the filter paper 3 to move one filter paper unit each time.

[0099] A certain gap can be cut between the two filter paper units, leaving only part of the paper connected, to facilitate removal of the old filter paper.

[0100] In some embodiments, the filter paper holder 4 can also be configured as a first reel 41 , and the filter paper 3 can be wound on the first reel 41 along a set direction, and the filter paper 3 can be unfolded and pulled out by rotating the first reel 41 .

[0101] The first reel 41 can be fixed on the housing 1 via a first rotating bracket 411 .

[0102] In some embodiments, a second reel 42 is provided for recycling the old filter paper 3. After the installation of the filter paper 3 is completed, the end of the filter paper 3 away from the first reel 41 is wound on the second reel 42, and the old filter paper 3 can be stored by rotating the second reel 42.

[0103] The second reel 42 can also be fixed to the housing 1 via a second rotating bracket 421 .

[0104] In some embodiments, the second drum 42 may be connected to a driving motor for driving the second drum 42 to rotate and actively store the old filter paper 3 .

[0105] It is worth noting that the driving motor acting on the second reel 42 can simultaneously pull the new filter paper 3 into the clamping mechanism 2 while curling and storing the old filter paper 3, thereby completing the filter paper replacement operation, which is convenient and reliable.

[0106] See also Figure 1 、 Figure 4 and Figure 5 In some embodiments, a matching locking mechanism 5 is provided between the upper shell 12 and the bottom shell 11 for stably fixing and locking the upper shell 12 on the bottom shell 11 .

[0107] Specifically, the locking mechanism 5 may include a locking pin 51 and a locking buckle 52 that cooperate with each other, and the locking pin 51 and the locking buckle 52 are respectively arranged on the bottom shell 11 and the upper shell 12.

[0108] Generally speaking, considering that the upper shell 12 and the bottom shell 11 are in a long-term compressed state and are difficult to separate, an elastic element 13 can be set between the upper shell 12 and the bottom shell 11; and when the upper shell 12 and the bottom shell 11 are in a locked state, the elastic element 13 is in a compressed state, maintaining a certain elastic force, and the direction of the elastic force is roughly along the direction of pushing the bottom shell 11 to separate from the upper shell 12, so that after the locking structure 5 is unlocked, the elastic element 13 pushes the bottom shell 11 to separate from the upper shell 12.

[0109] Accordingly, a guide seat 14 may be provided on the bottom shell 11 , and a push block 15 may be provided on the upper shell 12 , and the push block 15 may be movably embedded in the guide seat 14 , and the elastic element 13 may be compressed between the guide seat 14 and the push block 15 .

[0110] Generally speaking, the elastic element 13 can be configured as an elastic material piece with stable deformation specifications, such as a coil spring.

[0111] In some embodiments, a car is also provided, which is equipped with the above-mentioned air filter.

[0112] The air filter can be configured as an air filter or an air conditioning filter. The embodiment of the present application has at least the following beneficial effects:

[0113] The air filter and automobile provided in the embodiments of the present application include a shell with a filter cavity therein, a clamping mechanism and filter paper. The shell is configured as a snap-fit ​​upper shell and a bottom shell, and a first vent and a second vent are respectively provided on the upper shell and the bottom shell. The clamping mechanism includes a first clamping member and a second clamping member that match each other. The first clamping member and the second clamping member are respectively correspondingly arranged on the upper shell and the bottom shell. The filter paper is clamped between the first clamping member and the second clamping member to seal the gap between the upper shell and the bottom shell, thereby sealing the filter cavity and dividing the filter cavity into two chambers. When the air flow enters and exits the filter cavity through the first vent and the second vent, impurities can be filtered out by the filter paper, thereby realizing the air filtration function. Among them, by clamping the filter paper between the upper shell and the bottom shell, the filter paper replacement operation can be greatly simplified and the replacement efficiency can be improved; at the same time, the filter paper in the air filter is only clamped and sealed by two matching clamping parts, which greatly simplifies the filter element structure. The air filter maintenance and update can be completed by only replacing the filter paper. Compared with the overall replacement of an independent filter element composed of filter material, seals and structural frame, the method of only replacing the filter paper in this embodiment reduces the use cost to a certain extent, especially for equipment with higher filtration level requirements such as the cathode filter of hydrogen fuel cell vehicles, the maintenance and replacement frequency is higher, and the cost advantage is more obvious.

[0114] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0115] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0116] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0117] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0119] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0120] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0121] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air filter, characterized in that: include: A housing having a filter cavity therein, the housing comprising an upper shell and a bottom shell that match each other, and a first vent and a second vent connected to the filter cavity are respectively formed on the upper shell and the bottom shell; The clamping mechanism includes a first clamping member and a second clamping member, wherein the first clamping member is disposed on the bottom shell, and the second clamping member is disposed on the upper shell, and the first clamping member and the second clamping member are matched and abutted to seal the filter cavity; The filter paper is clamped between the first clamping member and the second clamping member and separates the filter cavity.

2. The air filter according to claim 1, wherein: A plurality of first bosses are arranged at intervals on the first clamping member, a plurality of second bosses are arranged at intervals on the second clamping member, and gaps formed by the plurality of first bosses arranged at intervals match and engage with the plurality of second bosses to clamp the filter paper.

3. The air filter according to claim 2, characterized in that The clamping mechanism further includes a plurality of first support shafts, both ends of which are respectively connected to two opposite first bosses, and the first support shafts abut against one side surface of the filter paper.

4. The air filter according to claim 3, characterized in that The first clamping mechanism further comprises: a bracket, arranged on the bottom shell; The second support shaft is arranged on the bracket, and the second support shaft abuts against the other side surface of the filter paper.

5. The air filter according to claim 4, characterized in that The plurality of first bosses are relatively arranged in at least two rows, the two ends of the first support shaft are respectively connected to the first bosses in two adjacent rows, and a second boss is engaged between any two adjacent first bosses; The second support shaft is located between two adjacent first bosses and abuts against the second boss, and the first support shaft is arranged parallel to the second support shaft, the second support shaft is close to the bottom of the first boss, and the first support shaft is close to the top of the first boss.

6. The air filter according to claim 5, characterized in that A sealing block is protruding from the second support shaft and is embedded between two adjacent first bosses. The filter paper is tightly clamped between the bottom gaps of the two adjacent first bosses and the sealing block. The shape of the sealing block is adapted to the shape of the bottom gaps of the two adjacent first bosses, and the sealing block abuts against the second boss.

7. The air filter according to claim 6, characterized in that A waist-shaped hole is provided on the bracket, and both ends of the second support shaft are movably embedded in the waist-shaped hole, and the long axis direction of the waist-shaped hole is arranged along the buckling direction of the upper shell and the bottom shell.

8. The air filter according to any one of claims 1 to 7, characterized in that: The air filter further comprises a filter paper seat, which is arranged on the bottom shell or the upper shell, and at least a portion of the filter paper is stored in the filter paper seat, and the filter paper seat can be unfolded and pulled out along the set direction.

9. The air filter according to claim 8, characterized in that The filter paper holder includes a first roller and a second roller, two ends of the filter paper are respectively wound on the first roller and the second roller, and the first roller and the second roller are arranged on the bottom shell or the upper shell.

10. An automobile, characterized in that: The invention comprises an air filter according to any one of claims 1 to 9.

Images