Air filter, engine system and motor vehicle

Abstract

The utility model belongs to the technical field of motor vehicles and air filters, and particularly relates to an air filter, an engine system and a motor vehicle. The air filter comprises a shell and further comprises an air inlet pipe and an exhaust pipe which are connected to the shell. A filter element is arranged in the shell and divides the inner space of the shell into an air inlet cavity and an air outlet cavity. The air inlet pipe is communicated with the air inlet cavity, and air to be filtered is introduced into the air inlet cavity; the exhaust pipe communicates with the exhaust cavity, and air entering the exhaust cavity after being filtered by the filter element is led out. The air filter is further provided with an improved buffer connection structure and an exhaust pipeline. The air filter is durable and stable in filtering efficiency, low in operation noise, convenient to maintain and install and suitable for diversified use environments and conditions. On the basis, the utility model further provides an engine system and a motor vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor vehicles and air filters, and in particular relates to an air filter, an engine system and a motor vehicle. Background Art

[0002] In the current development of the automotive industry, the performance and life of the engine are directly related to the overall performance of the vehicle and the user's driving experience. As an important part of the engine system, the performance of the air filter directly affects the engine's operating efficiency and long-term reliability.

[0003] The air filters currently on the market mainly focus on basic air purification functions, but they also show some shortcomings when dealing with the growing performance requirements and complex operating conditions of modern automobile engines.

[0004] There are many types of motor vehicles and usage scenarios, especially in harsh working conditions and harsh environments, such as being subjected to variable airflow impact when driving at high speeds, causing continuous vibration of the vehicle body under complex road conditions, and causing deterioration of air intake when passing through dusty and humid areas. These factors may cause some unfiltered air to penetrate into the engine through the tiny gaps in the filter housing and bypass the filter element. This penetration not only reduces the overall filtration efficiency of the air filter, but also may accelerate the wear of internal engine parts, affecting engine performance and life.

[0005] Modern engine compartments are limited and irregular, with compact layouts of internal components and cumbersome installation and removal processes for filters, which causes inconvenience for daily maintenance and regular replacement of filter elements. In addition, considering that the engine and its accessories will experience continuous vibration and impact during driving, especially when driving on bad roads or at high speeds. As the air intake portal of the engine, the air filter needs to remain stable in such a dynamic environment. Therefore, how to balance the convenience of disassembly and assembly and the stability of assembly is also a challenge in the development and design of air filters.

[0006] The exhaust duct that comes with the air filter needs to meet the basic airflow transmission function, but the noise generated by the exhaust duct during gas transmission reduces the ride comfort of the vehicle, especially in high-end models that pursue a quiet driving experience.

[0007] Modern cars generally adopt modular design, and the air filter connection is preferably adaptable to interfaces of different sizes. However, adjustable connection interfaces are also more likely to cause insufficient sealing defects. Under the influence of engine vibration and pressure fluctuations, there is a risk of gas leakage, which not only affects the filtration efficiency, but may also pose a threat to the stable operation of the engine. In particular, application scenarios such as off-road vehicles and high-performance sports cars have higher requirements for the sealing and durability of the air filter connection pipe. Utility Model Content

[0008] The utility model provides an air filter, an engine system and a motor vehicle, aiming to solve or partially solve the problems existing in the prior art in terms of environmental adaptability, ease of installation and maintenance, vibration and impact resistance, durable sealing, filtration efficiency, noise control, etc., so as to better meet the high performance requirements of modern automobile engines and enhance the user's driving experience.

[0009] The first aspect of the utility model is to provide an air filter, comprising a shell, and also comprising an air intake pipe and an exhaust pipe connected to the shell; a filter element is provided in the shell to divide the internal space of the shell into an air intake chamber and an exhaust chamber; the air intake pipe is connected to the air intake chamber to introduce the air to be filtered into the air intake chamber; the exhaust pipe is connected to the exhaust chamber to discharge the air that enters the exhaust chamber after being filtered by the filter element.

[0010] As a further optimization scheme, the housing includes a first filter housing and a second filter housing that are butt-jointed, with a first butt joint edge at the opening of the first filter housing and a second butt joint edge at the opening of the second filter housing; the filter element includes a filter element in the shape of a rectangular prism with a rectangular top surface and a rectangular bottom surface, and a sealing frame arranged along the edge of the filter element. Preferably, the sealing frame is elastic, and when the first filter housing and the second filter housing are in a butt joint state, the sealing frame is pressed and fixed between the first butt joint edge and the second butt joint edge.

[0011] As a further optimization, the sealing frame is formed in situ and bonded to the edge of the filter element.

[0012] As a further optimization solution, a reinforcement network is formed on one side of the filter element and in the area surrounded by the sealing frame, and the reinforcement network is integrally connected to the sealing frame at the edge.

[0013] As a further optimization solution, the strengthening network is composed of a number of hexagonal network units continuously spread on the surface of the filter element, and through pores are formed in each network unit.

[0014] As a further optimization solution, a sunken supporting step is formed on the inner side of the first butt joint edge and along the extension direction of the first butt joint edge, and a bearing surface is formed on the outer periphery of the sealing frame, and the bearing surface is adapted to the end surface of the supporting step.

[0015] As a further optimization scheme, an annular sealing groove is formed on the second docking edge and on the side facing the first docking edge, and an annular sealing flange is integrally formed on the sealing frame and on the side facing the second docking edge. When the first docking edge is docked with the second docking edge, the sealing flange adaptively elastically deforms under the pressure of the sealing groove and fills the sealing groove.

[0016] As a further optimization scheme, a group of threaded holes are formed on the end face of the first butt joint edge, and a group of through holes penetrating the sealing groove are provided on the second butt joint edge. A group of fasteners pass through the through holes and are fastened in the threaded holes to fasten the first butt joint edge to the second butt joint edge.

[0017] As a further optimization solution, the first butt joint edge is located above the second butt joint edge, and the fastener is located outside the sealing flange.

[0018] As a further optimization scheme, a buffer connection assembly is used to install the shell as the installation object in the engine compartment as the installation carrier; the buffer connection assembly includes at least one first connection buckle group and at least one second connection buckle group. The first connection buckle group includes an insertion rod arranged on the installation object and an elastic sleeve gasket arranged on the installation carrier; the insertion rod has a rod body and an anti-slip portion located at the end of the rod body; a through-hole is formed on the elastic sleeve gasket; when the insertion rod and the elastic sleeve gasket are assembled, the rod body passes through the socket and is confined in the socket. The second connection buckle group includes an elastic snap ring arranged on the installation object, a rigid bushing accommodated in the elastic snap ring, and a locking piece inserted into the rigid bushing, and the locking piece fixes the rigid bushing on the installation carrier.

[0019] As a further optimization solution, the socket passes through the elastic sleeve from top to bottom, and the top of the socket is in a trumpet shape.

[0020] As a further optimization solution, the elastic sleeve has an annular limiting groove around its periphery for assembling the elastic sleeve on the mounting carrier.

[0021] As a further optimization solution, the insertion rod is arranged vertically and is integrally formed on the support ear, and the support ear is arranged on the installation object.

[0022] As a further optimization solution, an auxiliary block connected to the lug is provided at the root of the shaft, and the auxiliary block, the lug and the shaft are integrally formed and connected together.

[0023] As a further optimization solution, the auxiliary block has a tapered outer contour and a plurality of thickness-reducing grooves are formed on a surface of one side.

[0024] As a further optimization solution, the radial dimension of the shaft is smaller than the radial dimension of the anti-slip portion, and the anti-slip portion occupies a range of 150° to 210° in the circumferential direction.

[0025] As a further optimization solution, the elastic clamp is provided with a central accommodating hole which passes through from top to bottom to accommodate the rigid bushing; an annular groove is formed on the circumference of the elastic clamp to engage in the transverse notch on the installation object.

[0026] As a further optimization solution, a group of pressure-bearing buffer blocks are provided on the upper and lower surfaces of the elastic clamping ring around the central accommodating hole, and the distance between the upper surface and the lower surface of the pressure-bearing buffer block is greater than the height of the rigid bushing.

[0027] As a further optimization scheme, the exhaust pipe includes a flexible tube body and a rigid tube body connected together; the rigid tube body includes an inner tube body and an outer cover body arranged outside the inner tube body, and a plurality of partition plates arranged along the extension direction of the inner tube body are provided in the interval formed between the inner tube body and the outer cover body, and a resonance cavity is formed between adjacent partition plates; at least one opening is provided on the tube wall of the inner tube body and corresponding to each resonance cavity, so that the internal space of the inner tube body is connected with the resonance cavity.

[0028] As a further optimization scheme, the partition plate with the largest radial dimension among the multiple partition plates on the outside of the inner tube body is recorded as the reference partition plate, and the remaining partition plates are arranged on both sides of the reference partition plate, and the radial dimensions decrease from the reference partition plate to both sides; the outer cover body is divided into two sections, which are connected to each other from both sides of the reference partition plate to the middle.

[0029] As a further optimization solution, a limiting step that abuts against the partition plate is provided on the inner wall of the outer cover, and a stop block is also provided on the inner wall of the outer cover and adjacent to the limiting step, and a partition plate is defined between the stop block and the limiting step.

[0030] As a further optimization solution, the anti-slip stop block is sloped, so that a guiding slope is formed on the surface to guide the spacer plate to slide into the gap between the anti-slip stop block and the limiting step.

[0031] As a further optimization scheme, the flexible tube body is a corrugated tube, and annular grooves are provided at the proximal and distal ends of the flexible tube body, and a first adjusting clamp is pre-installed in the annular groove; the distal end of the flexible tube body is sleeved on the proximal end of the rigid tube body, and the first adjusting clamp is tightened at the connection.

[0032] As a further optimization scheme, a connecting neck is provided at the far end of the rigid tube body. The connecting neck is in the shape of a short tube and has a number of axially extending caliber adjustment notches arranged circumferentially on the tube wall. An elastic sealing ring is sleeved on the connecting neck; and a second adjustment clamp is also clamped on the elastic sealing ring.

[0033] As a further optimization solution, the end of the connecting neck has a radially outwardly protruding flange; under the tightening action of the second adjusting clamp, the elastic sealing ring is compressed inward to form an interlocking with the flange.

[0034] As a further optimization scheme, the elastic sealing ring includes an inner ring body and an outer ring body that are coaxially connected. The inner ring body and the outer ring body are connected to each other at the distal end and form an opening at the proximal end; the connecting neck is inserted from the opening at the proximal end of the outer ring body and embedded in the gap between the inner ring body and the outer ring body; a second adjustment clamp is provided on the outer ring body.

[0035] As a further optimization solution, the caliber adjustment notch part occupies the axial length of the connecting neck, thereby forming a notch-free section at the root of the connecting neck; a number of annular patterns are formed on the outer wall of the proximal end of the inner ring body, and the annular patterns are closely attached to the inner wall of the notch-free section.

[0036] The second aspect of the utility model is an engine system, wherein an air filter filters the air in the environment and then sends it into the intake manifold of the engine, or the air filter filters the air in the environment and then sends it into the turbocharger and then into the intake manifold of the engine. The air filter is the air filter introduced above.

[0037] The third aspect of the utility model is a motor vehicle, wherein the above-mentioned air filter is installed in the engine compartment of the motor vehicle.

[0038] Beneficial Effects

[0039] The air filter provided by the utility model can effectively block particles in the air, protect the engine from wear and tear, and extend the service life. The filter ensures that there is no leakage of untreated air during the filtration process through the close cooperation between the sealing frame and the shell, maintaining high filtration efficiency and engine safety. The reinforced filter structure improves the mechanical strength and deformation resistance of the filter element, and can maintain good sealing performance even under harsh conditions.

[0040] The air filter provided by the utility model has an improved buffer connection assembly, which can effectively absorb vibration and impact force. Through the cooperation of the first and second connecting buckle groups, the air filter can be stably installed and conveniently disassembled, which is convenient for daily maintenance and quick replacement. At the same time, it also reduces external interference to the air supply system, ensuring that the engine obtains stable and high-quality air flow.

[0041] The air filter provided by the utility model has an improved exhaust pipe structure, wherein the exhaust pipe has a resonance cavity with a built-in spacer plate, which utilizes sound wave interference to reduce noise and improve driving comfort; the combination of flexible and rigid pipe bodies facilitates installation in a complex engine compartment; the specific size distribution of the spacer plate and the docking structure of the rigid pipe body give it excellent assembly and spatial adaptability; the sealing of the connection is ensured by the cooperation of the connecting neck, the sealing ring and the adjusting clamp, which can be suitable for high vibration or unstable pressure environments, and can conveniently connect components of different diameters, reducing dependence on additional adapters. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 , Figure 2 A schematic diagram of the air filter structure.

[0043] Figure 3 Schematic diagram of the explosion inside the air filter housing.

[0044] Figure 4 Schematic diagram of the structure of the filter element.

[0045] Figure 5 It is an exploded schematic diagram of the first butt joint edge and the second butt joint edge.

[0046] Figure 6 It is a schematic diagram of assembling the first butt joint edge and the second butt joint edge.

[0047] Figure 7 It is a schematic diagram of the structure of the buffer connection component on the shell.

[0048] Figure 8 , Fig. 9 and Fig.10 It is a schematic structural diagram of the first connecting buckle group.

[0049] Fig.11 and Fig.12 It is a schematic structural diagram of the second connecting buckle group.

[0050] Fig.13 Schematic diagram of the exhaust pipe structure.

[0051] Fig.14 It is a structural schematic diagram of a rigid tube body.

[0052] Fig.15 It is a schematic diagram of the structure of the outer cover.

[0053] Fig.16 It is a schematic diagram of the cooperation between the connecting neck and the elastic sealing ring.

[0054] Fig.17 It is a schematic diagram of the structure of the elastic sealing ring.

[0055] In the figure: 1, housing; 2, air inlet pipe; 3, exhaust pipe; 4, filter element; 5, first connecting buckle group; 6, second connecting buckle group; 11, first filter housing; 12, second filter housing; 13, fastener; 31, flexible pipe body; 32, rigid pipe body; 33, first adjusting clamp; 34, elastic sealing ring; 35, second adjusting clamp; 41, filter element; 42, sealing frame; 43, strengthening network; 51, plug rod; 52, elastic sleeve pad; 53, support ear; 61, elastic clamp ring; 62, rigid bushing; 63, locking piece; 111, first docking edge; 121, second docking edge; 321, spacer; 322, outer cover; 323, inner tube body; 325, connecting neck; 341, inner ring body; 342, outer ring body; 421, bearing surface; 422, sealing flange; 511, rod body; 512, anti-slip portion; 513, auxiliary block; 514, thickness reduction groove; 521, plug hole; 522, limit slot; 611, central accommodating hole; 612, annular slot; 613, pressure buffer block; 1111, supporting step; 1112, threaded hole; 1211, sealing groove; 1212, through hole; 3221, limit step; 3222, anti-slip block; 3251, flange; 3252, caliber adjustment notch. DETAILED DESCRIPTION

[0056] The air filter is a key component used in automobile engines. Its main function is to filter the air entering the engine and filter out foreign matter such as dust, sand, and water vapor in the air to protect the engine from damage by foreign matter. When the engine is running, a large amount of clean air is required for combustion, but the air often carries various impurities. If these impurities enter the engine, it will cause wear of components such as the cylinder block, piston rings, and crankshaft, seriously affecting the service life and performance of the engine. Therefore, it is necessary to install an air filter on the engine intake line.

[0057] The air filter provided by the utility model has a structure as follows Figure 1 and Figure 2 As shown, it includes a housing 1, and also includes an air inlet pipe 2 and an air outlet pipe 3 connected to the housing 1. Figure 3 As shown, a filter element 4 is provided in the shell 1 to divide the internal space of the shell 1 into an air inlet chamber and an air exhaust chamber; the air inlet pipe 2 is connected to the air inlet chamber to introduce the air to be filtered into the air inlet chamber; the air exhaust pipe 3 is connected to the air exhaust chamber to discharge the air that enters the air exhaust chamber after being filtered by the filter element 4.

[0058] The above-mentioned air filter is mainly used to supply clean, impurity-free air to the automobile engine, thereby ensuring the efficient and stable operation of the engine and extending its service life. Its working process is as follows:

[0059] Air intake stage: When the engine is running, a large amount of air is required to participate in combustion; the intake pipe 2 is located at the front end of the air filter and inhales air from the external environment. This air may carry various impurities, such as dust, sand, water vapor, etc.

[0060] Filtration stage: The inhaled air then enters the air intake chamber in the housing 1 through the air intake pipe 2, and then passes through the filter element 4; the filter element 4 can effectively intercept and capture tiny particles in the air, allowing clean air to pass through and enter the exhaust chamber.

[0061] Air discharge stage: The air purified by the filter element 4 enters the exhaust chamber. The exhaust pipe 3 is connected to the exhaust chamber to guide the clean air out and transport it to the next component, usually directly into the intake manifold of the engine, or in a turbocharged vehicle, into the turbocharger to increase the pressure before entering the engine.

[0062] like Figure 3 As shown, the housing 1 comprises a first filter housing 11 and a second filter housing 12 which are butt-jointed, and the first filter housing 11 has a first butt joint edge 111 at the opening, and the second filter housing 12 has a second butt joint edge 121 at the opening. Figure 4 As shown, it includes a filter element 41 with a certain thickness and a sealing frame 42 arranged along the edge of the filter element 41, and the sealing frame 42 is elastic; when the first filter housing 11 and the second filter housing 12 are in a docking state, the sealing frame 42 is pressed and fixed between the first docking edge 111 and the second docking edge 121.

[0063] The housing 1 is composed of a first filter housing 11 and a second filter housing 12 that are docked, so that the filter can be easily disassembled to replace or clean the filter element 41, thereby improving the convenience of maintenance. The user can regularly check or replace the filter element 41 without damaging the overall structure to ensure that the engine continues to obtain clean air. The first docking edge 111 and the second docking edge 121 are used for the tight connection between the first filter housing 11 and the second filter housing 12. The sealing frame 42 is located at the edge of the filter element 41 and is elastic. When the two filter housings are docked, the sealing frame 42 is squeezed on both sides and adaptively deformed to form a reliable sealing contact interface to prevent unfiltered air from bypassing the filter element 41 and directly entering the engine, thereby ensuring the filtering effect.

[0064] Preferably, the filter element 41 is a paper filter element or a non-woven fabric filter element.

[0065] Preferably, the sealing frame 42 is made of rubber, silicone, polyurethane and other materials, and has good elasticity and weather resistance. The sealing frame 42 can be prefabricated and installed on the edge of the filter element 41 by assembly, pasting and other methods, and is preferably combined with the edge of the filter element 41 by in-situ molding. In-situ molding allows the sealing frame 42 to be formed and fixed directly at the specified position of the filter element 41, which can achieve more precise size control and stronger bonding strength, reduce the possibility of gaps or looseness introduced by the assembly process, and thus improve the manufacturing accuracy and reliability of the entire filter.

[0066] As a further improvement, a reinforcement network 43 is formed on one side of the filter element 41 and in the area surrounded by the sealing frame 42. The reinforcement network 43 is integrally connected to the sealing frame 42 at the edge. Figure 4 The basic hexagonal structural unit shown is composed of a number of hexagonal network units continuously spread on the surface of the filter element 41, and through pores are formed in each network unit. The reinforced network 43 can also be formed by combining basic structural units of other shapes such as rectangles, triangles, and diamonds. The reinforced network 43 improves the mechanical strength and stability of the filter element 41 by forming a reinforcement structure on the surface of one side of the filter element 41. Especially when the filter element 41 is made of a relatively soft material or needs to withstand a higher airflow pressure, the reinforced network 43 can prevent the filter element 41 from being deformed or damaged due to air pressure difference or vibration, prevent the filter element 41 from affecting the sealing due to deformation, and also help to extend the service life of the filter element 41.

[0067] like Figure 5 and Figure 6 As shown, a sunken support step 1111 is formed inside the first docking edge 111 and along the extension direction of the first docking edge 111, and a bearing surface 421 is formed on the periphery of the sealing frame 42, and the bearing surface 421 is adapted to the end surface of the support step 1111. The support step 1111 is located inside the first docking edge 111 and extends along the edge, forming a supporting structure that accurately matches the sealing frame 42. When the two parts of the filter housing are docked and closed, the bearing surface 421 of the sealing frame 42 can be firmly seated on the end surface of the support step 1111, which is convenient for the filter element 4 to be accurately positioned during assembly, and also prevents the filter element 4 from shifting due to vibration during the driving of the vehicle. At the same time, the bearing surface 421 of the sealing frame 42 is in close contact with the end surface of the support step 1111, and also has a certain effect of blocking air from penetrating from the edge.

[0068] An annular sealing groove 1211 is formed on the second butt joint edge 121 and is located on one side facing the first butt joint edge 111. An annular sealing flange 422 is integrally formed on the sealing frame 42 and is located on one side facing the second butt joint edge 121. When the first butt joint edge 111 and the second butt joint edge 121 are butt-jointed and closed, the sealing flange 422 is elastically deformed adaptively under the pressure of the sealing groove 1211 and filled in the sealing groove 1211. The sealing groove 1211 cooperates with the sealing flange 422, and the sealing flange 422 is elastically deformed to be close to the inner wall of the sealing groove 1211, forming a tight sealing interface, effectively preventing unfiltered air from penetrating into the exhaust cavity from the edge gap of the housing 1, and maintaining the effectiveness of air filtration and the safety of engine operation. In addition, the cooperation of the sealing flange 422 and the sealing groove 1211 also increases the stability of the filter element 4 inside the housing 1, and even if vibration or air pressure fluctuation occurs during the driving of the vehicle, the filter element 4 can be effectively prevented from deflecting or loosening.

[0069] A group of threaded holes 1112 are formed on the end surface of the first butt joint edge 111, and a group of through holes 1212 penetrating the sealing groove 1211 are provided on the second butt joint edge 121. A group of fasteners 13, such as screws, are passed through the through holes 1212 and fastened in the threaded holes 1112 to fasten the first butt joint edge 111 and the second butt joint edge 121 together, thereby generating a strong pressing force to prevent the first butt joint edge 111 and the second butt joint edge 121 from loosening and affecting the sealing effect.

[0070] Preferably, the first butt joint edge 111 is located above the second butt joint edge 121, so that the notch of the sealing groove 1211 faces downward to avoid water or dust accumulation in the notch affecting the durability of the sealing frame 42. In addition, the fastener 13 is preferably arranged on the outside of the sealing flange 422 to avoid the fastener 13 causing the sealing of the inner cavity of the housing 1.

[0071] The following describes the connection between the air filter and the engine compartment.

[0072] The housing 1 of the air filter is used as an installation object, and the engine compartment is used as an installation carrier. The housing 1 is installed in the engine compartment through a set of buffer connection components.

[0073] like Figure 7 As shown, the buffer connection assembly is attached to the installation object and is used to fix the installation object on the installation carrier, and includes at least one first connection buckle group 5 and at least one second connection buckle group 6. The first connection buckle group 5 and the second connection buckle group 6 cooperate to achieve buffering and firm connection of the connection part between the air filter and the engine compartment.

[0074] The first connecting buckle group 5 is as follows Figure 8 , Fig. 9 and Fig.10 As shown, the first connecting buckle group 5 includes an insertion rod 51 arranged on the installation object and an elastic sleeve pad 52 arranged on the installation carrier; the insertion rod 51 has a rod body 511 and an anti-slip portion 512 located at the end of the rod body 511; a through-hole 521 is formed on the elastic sleeve pad 52; when the insertion rod 51 and the elastic sleeve pad 52 are assembled, the rod body 511 passes through the socket 521 and is confined in the socket 521. The elastic sleeve pad 52 is elastic and can provide strong friction resistance after the insertion of the insertion rod 51. In combination with the anti-slip portion 512, the insertion rod 51 is not easy to fall off from the elastic sleeve pad 52, thereby ensuring the stability of the connection. During the operation of the vehicle, the force generated by road bumps or engine vibrations can be absorbed and dispersed by the elastic sleeve pad 52, thereby reducing the impact directly transmitted to the housing 1 and protecting the filter from severe vibration.

[0075] The insertion hole 521 passes through the elastic sleeve 52 from top to bottom, and the top of the insertion hole 521 is trumpet-shaped to form a guiding structure. When the insertion rod 51 approaches the insertion hole 521, the trumpet-shaped opening can easily receive and guide the rod body 511 and the anti-slip portion 512 located at the end of the rod body 511 to pass through. Even in the case of poor visibility or limited operating space, the insertion rod 51 can be easily aligned and smoothly inserted into the insertion hole 521.

[0076] The elastic sleeve 52 has an annular limiting groove 522 on its circumference for assembling the elastic sleeve 52 on the mounting carrier, so that the elastic sleeve 52 can be conveniently and firmly fixed on the mounting carrier.

[0077] The plug rod 51 is arranged vertically and is integrally formed on the support ear 53, and the support ear 53 is arranged on the installation object. The plug rod 51 and the support ear 53 are integrally formed to ensure the connection strength, which helps to withstand stronger vibration and impact.

[0078] An auxiliary block 513 for connecting the lug 53 is provided at the root of the shaft 511, and the auxiliary block 513, the lug 53 and the shaft 511 are integrally formed and connected together. The auxiliary block 513 has a tapered outer profile, and a plurality of thickness reduction grooves 514 are formed on one side surface. By providing the auxiliary block 513 and arranging the thickness reduction grooves 514 on the auxiliary block 513, not only the connection strength between the shaft 511 and the lug 53 is strengthened, but also the shrinkage and deformation of the surface of the lug 53 caused by the excessive thickness of the auxiliary block 513 during the injection molding process is avoided. Specifically, during the injection molding process, the plastic material cools and solidifies from the molten state, and the volume shrinks. If this shrinkage is unevenly distributed, it may cause deformation of the product, such as distortion, depression or surface defects. Especially in areas where the wall thickness of the product varies greatly, such as relatively thick parts such as the auxiliary block 513, the internal cooling rate during the cooling process is usually slower than that of the thin-walled part, resulting in large internal residual stress, which is easy to cause local deformation and affect the appearance and assembly accuracy. The thickness-reducing groove 514 is essentially formed by digging out a portion of material from the thick part of the auxiliary block 513 to form one or more grooves, thereby suppressing the unevenness and deformation caused by the cooling and solidification process.

[0079] The radial dimension of the shaft 511 is smaller than the radial dimension of the anti-slip portion 512, and the anti-slip portion 512 occupies a range of 150° to 210° in the circumferential direction. The anti-slip portion 512 has a larger radial dimension than the shaft 511. When the insertion rod 51 is inserted into the insertion hole 521 of the elastic sleeve 52, the anti-slip portion 512 will form a physical barrier at the end of the insertion hole 521, making it more difficult for the insertion rod 51 to be dislodged. The anti-slip portion 512 can be arranged around 360° in the circumferential direction, but it is preferred to occupy a specific angular range in the circumferential direction, preferably an angular range of 150° to 210°, which is more convenient for guiding and inserting the insertion rod 51, and also has a good effect of preventing the insertion rod 51 from withdrawing in the reverse direction.

[0080] The second connecting buckle group 6 is as follows Fig.11 and Fig.12 As shown, it includes an elastic snap ring 61 arranged on the installation object, a rigid bushing 62 accommodated in the elastic snap ring 61, and a locking member 63 inserted into the rigid bushing 62. Among them, the locking member 63 is preferably a screw, a bolt, etc., which passes through the rigid bushing 62 and fixes the rigid bushing 62 on the installation carrier. The elastic snap ring 61 is made of elastic materials such as silicone and rubber, which provides an effective buffer for the shell 1; the rigid bushing 62 is made of hard materials such as stainless steel, carbon steel, and aluminum alloy, which provides a carrier foundation for the fixation of the shell 1 to withstand a strong locking force. The elastic snap ring 61, the rigid bushing 62 and the locking member 63 cooperate to achieve a connection method that is both stable and has a buffering function, ensuring the reliable installation of the air filter under complex working conditions.

[0081] The elastic snap ring 61 is provided with a central accommodating hole 611 which passes through from top to bottom and is used to accommodate the rigid bushing 62 ; an annular groove 612 is formed on the circumference of the elastic snap ring 61 and is used to be engaged in a transverse notch on the installation object.

[0082] A set of pressure-bearing buffer blocks 613 are disposed on the upper and lower surfaces of the elastic snap ring 61 around the central accommodating hole 611 , and the distance between the upper surface and the lower surface of the pressure-bearing buffer block 613 is greater than the height of the rigid bushing 62 .

[0083] When the vehicle encounters bumps or the engine vibrates during driving, the elastic snap ring 61, as an elastic element, can absorb and disperse these external forces, reducing the impact directly transmitted to the air filter housing 1. The setting of the pressure-bearing buffer block 613 further enhances this buffering ability, elastically deforms when subjected to pressure, strengthens the clamping of the transverse notch on the installation object from both sides, and reduces the risk of structural damage caused by local concentrated force.

[0084] As introduced above, the buffer connection assembly includes at least one first connection buckle group 5 and at least one second connection buckle group 6. Preferably, two first connection buckle groups 5 and one second connection buckle group 6 are provided on the shell 1, or three first connection buckle groups 5 and one second connection buckle group 6 are provided on the shell 1. Two or three first connection buckle groups 5 cooperate with one second connection buckle group 6, which can not only provide multi-point support to ensure the balance and stability of the installation of the shell 1, but also take into account the convenience and flexibility of installation. The first connection buckle group 5 is a pluggable structure, which is convenient for quick installation and disassembly, and is suitable for convenient operation during daily maintenance or replacement. The second connection buckle group 6 is fixed by a locking member 63, which provides stronger firmness and reliability, and can withstand strong vertical forces in both horizontal and vertical directions. The cooperation between the two can reduce installation time and improve efficiency while ensuring overall stability.

[0085] The following describes the exhaust pipe 3 of the air filter, which is connected to the housing 1 of the air filter and is used to discharge the clean air obtained after filtration from the air filter and introduce it into the engine or turbocharger. The exhaust pipe 3 has excellent sealing performance and silencing performance and is easy to assemble. For the convenience of description, for any component in the exhaust pipe 3, the end close to the air filter is recorded as the proximal end, that is, the end facing the airflow direction is the proximal end, and the end away from the air filter is recorded as the distal end, that is, the end along the airflow direction is the distal end.

[0086] like Fig.13 As shown, the exhaust pipe 3 includes a flexible pipe body 31 and a rigid pipe body 32 connected together. The rigid pipe body 32 is as shown in FIG. Fig.14As shown, it includes an inner tube body 323 and an outer cover body 322 that is covered outside the inner tube body 323. A plurality of partition plates 321 arranged along the extension direction of the inner tube body 323 are provided in the interval formed between the inner tube body 323 and the outer cover body 322, and a resonance cavity is formed between adjacent partition plates 321; at least one opening is provided on the tube wall of the inner tube body 323 and corresponding to each resonance cavity, so that the internal space of the inner tube body 323 is connected to the resonance cavity. The flexible tube body 31 can bend and adapt to complex installation paths, and can be flexibly connected to a designated position without sacrificing sealing, thereby simplifying the installation process and improving assembly flexibility. The rigid tube body 32 provides a section of a structurally stable channel for the airflow, and a plurality of resonance cavities are arranged in the section of the channel to reduce noise of different frequencies. The resonance cavity noise reduction is based on the principle of sound wave interference. Multiple resonance cavities are formed by setting a partition plate 321 between the inner tube body 323 and the outer cover body 322. Each resonance cavity is equivalent to an acoustic filter, and each produces a resonance effect for sound waves of a specific frequency, so that the sound wave energy of these frequencies is greatly lost in the cavity, thereby achieving the effect of reducing noise. Preferably, corresponding to each resonance cavity, at least one pair of openings is provided on the inner tube body 323.

[0087] like Fig.14 As shown, the partition plate 321 with the largest radial dimension among the multiple partition plates 321 outside the inner tube body 323 is recorded as the reference partition plate, and the remaining partition plates 321 are arranged on both sides of the reference partition plate, and the radial dimensions decrease from the reference partition plate to both sides; the outer cover body 322 is divided into two sections, which are butted from both sides of the reference partition plate to the middle. The partition plates 321 are arranged in decreasing sizes, which reduces the obstruction of the partition plates 321 to the outer cover body 322 during assembly, and also avoids the wear of the inner wall of the outer cover body 322, ensures the tightness between the inner wall of the outer cover body 322 and the edge of the partition plate 321, and ensures that the noise reduction effect of the resonance cavity can be fully exerted according to the design. The outer cover body 322 is divided into two sections and butted from both sides to the middle, so that the exhaust pipe 3 can be designed into a more curved and twisted complex shape, and the outer cover body 322 can still complete the assembly, thereby improving the spatial adaptability of the exhaust pipe 3.

[0088] like Fig.15As shown, a limiting step 3221 is provided on the inner wall of the outer cover 322, which is in contact with the spacer 321. A stopper block 3222 is also provided on the inner wall of the outer cover 322 and adjacent to the limiting step 3221, and the spacer 321 is defined between the stopper block 3222 and the limiting step 3221. The limiting step 3221 is provided on the inner wall of the outer cover 322, and is in contact with the edge of the spacer 321, so as to play a positioning and supporting role and determine the position of the spacer 321. The stopper block 3222 adjacent to the limiting step 3221 forms a clamping area together with the limiting step 3221, which limits the movement of the spacer 321 and prevents displacement due to vibration or external force after assembly. Preferably, the stopper block 3222 is in a slope shape, so as to form a guiding slope on the surface, and guide the spacer 321 to slide into the gap between the stopper block 3222 and the limiting step 3221.

[0089] like Fig.13 As shown, the flexible pipe body 31 is a corrugated pipe, and an annular groove is provided at the proximal end and the distal end of the flexible pipe body 31, and a first adjustment clamp 33 is pre-installed in the annular groove; the distal end of the flexible pipe body 31 is sleeved on the proximal end of the rigid pipe body 32, and the first adjustment clamp 33 is clamped at the connection. The flexible pipe body 31 adopts a corrugated pipe, which has good flexibility and can be bent into various angles without affecting its own integrity, which is suitable for the complex and compact space layout in the engine compartment of the automobile. The annular grooves are provided at the proximal end and the distal end of the flexible pipe body 31 and the first adjustment clamp 33 is pre-installed, which simplifies the assembly process of the exhaust pipe 3. By tightening or loosening the first adjustment clamp 33, the installation or maintenance operation can be conveniently completed.

[0090] like Fig.16As shown, a connection neck 325 is provided at the far end of the rigid tube body 32. The connection neck 325 is in the shape of a short tube, and a plurality of axially extending caliber adjustment notches 3252 are arranged circumferentially on the tube wall; an elastic sealing ring 34 is sleeved on the connection neck 325; and a second adjustment clamp 35 is also clamped on the elastic sealing ring 34. The caliber adjustment notch 3252 on the tube wall of the connection neck 325 allows the user to adjust the size of the connection neck 325 according to the diameter of the actual connection part, so as to achieve a close fit with the target connection component without the need for an additional adapter or conversion joint, thereby improving the flexibility and versatility of assembly and reducing the inventory and cost of the product. The elastic sealing ring 34 sleeved on the connection neck 325 can be made of rubber or other highly elastic materials, and is tightly fitted on the connection neck 325 to form a good sealing effect, prevent air leakage, and maintain the sealing and filtering efficiency of the engine intake system. The second adjustment clamp 35 is clamped on the elastic sealing ring 34 to further tighten the elastic sealing ring 34, and the sealing force can be easily fine-tuned by adjusting the tightness of the second adjustment clamp 35. The adaptability of the connecting neck 325, the sealing performance of the elastic sealing ring 34, and the tightness and adjustability of the second adjusting clamp 35 cooperate to achieve efficient, reliable and convenient connection between the exhaust pipe 3 and the engine system, while ensuring the sealing performance of the air circulation path and optimizing the performance of the entire intake system.

[0091] like Fig.16 As shown, the end of the connection neck 325 has a radially outwardly protruding flange 3251; under the tightening action of the second adjustment clamp 35, the elastic sealing ring 34 is pressed inward and interlocked with the flange 3251. The flange 3251 at the end of the connection neck 325 and its interaction with the elastic sealing ring 34 and the second adjustment clamp 35 together constitute an enhanced sealing structure. Specifically, when the second adjustment clamp 35 applies pressure to the elastic sealing ring 34, the elastic sealing ring 34 is forced to retract and fit tightly on the outer wall of the connection neck 325 and the flange 3251, forming an interlocking structure with each other, preventing the elastic sealing ring 34 from being displaced or falling off, significantly enhancing the reliability of the seal, and effectively preventing air leakage under more extreme vibration or pressure fluctuation conditions, ensuring long-term and reliable airtightness of the connection. At the same time, the interlocking of the flange 3251 and the elastic sealing ring 34 also simplifies the installation. The user only needs to appropriately adjust the tightness of the second adjustment clamp 35 to complete the sealing without the need for complicated tools or equipment. It is also convenient for future maintenance, inspection or replacement of the elastic sealing ring 34, thereby improving ease of maintenance.

[0092] like Fig.16 and Fig.17As shown, the elastic sealing ring 34 includes an inner ring body 341 and an outer ring body 342 which are coaxially connected. The inner ring body 341 and the outer ring body 342 are connected to each other at the distal end and form an opening at the proximal end. The connecting neck 325 is inserted from the opening at the proximal end of the outer ring body 342 and embedded in the gap between the inner ring body 341 and the outer ring body 342. A second adjusting clamp 35 is clamped on the outer ring body 342. The elastic sealing ring 34 formed by the inner ring body 341 and the outer ring body 342 has a wrapping property. When the connecting neck 325 is inserted into the gap between the two ring bodies, the elastic sealing ring 34 can adapt to the change of the diameter of the connecting neck 325 through elastic deformation, can fully fit the inner and outer surfaces of the connecting neck 325, and also fully fit the pipeline inserted into the inner ring body 341 for connecting with the exhaust pipe 3, forming a tight sealing ring system, effectively preventing gas leakage at the connection. In addition, during installation, the connecting neck 325 can be easily inserted from the opening of the elastic sealing ring 34, which simplifies the assembly and replacement operations. It is particularly suitable for environments with limited space, and is also conducive to daily maintenance and troubleshooting, reducing maintenance costs.

[0093] like Fig.16 and Fig.17 As shown, the caliber adjustment notch 3252 partially occupies the axial length of the connecting neck 325, thereby forming a gapless section at the root of the connecting neck 325; a number of annular lines are formed on the outer wall of the proximal end of the inner ring body 341, and the annular lines are close to the inner wall of the gapless section. While the caliber adjustment notch 3252 occupies a part of the axial length of the connecting neck 325, a continuous section without a gap is retained at its root. The existence of this gapless section enhances the structural stability of the connecting neck 325 itself and reduces the risk of cracking at the connection. Annular lines are formed on the outer wall of the proximal end of the inner ring body 341. When the elastic sealing ring 34 is installed in place, these annular lines will be close to the inner wall of the gapless section of the connecting neck 325, increasing the friction between the two contact surfaces while also increasing the number of sealing barriers between the two contact surfaces. Even under conditions of vibration or pressure changes, the elastic sealing ring 34 and the connecting neck 325 can still maintain a close fit to prevent air leakage.

[0094] The above implementation modes are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with the technology in this field can understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An air filter, characterized in that: The invention comprises a housing (1), and also comprises an air intake pipe (2) and an air exhaust pipe (3) connected to the housing (1); a filter element (4) is provided in the housing (1) to divide the internal space of the housing (1) into an air intake chamber and an air exhaust chamber; the air intake pipe (2) is communicated with the air intake chamber to introduce air to be filtered into the air intake chamber; the air exhaust pipe (3) is communicated with the air exhaust chamber to discharge air that enters the air exhaust chamber after being filtered by the filter element (4); the housing (1) comprises a first filter housing (11) and a second filter housing (12) which are butt-jointed, the first filter housing (11) having a first butt joint edge (111) at the opening, and the second filter housing (12) having a second butt joint edge (121) at the opening; the filter element (4) comprises a filter element (41), the filter element (41) is in the shape of a rectangular prism, and a sealing frame (42) is arranged along the edge of the filter element (41).

2. The air filter according to claim 1, characterized in that: The sealing frame (42) is elastic; when the first filter housing (11) and the second filter housing (12) are in a butt-jointed state, the sealing frame (42) is pressed and fixed between the first butt-jointed edge (111) and the second butt-jointed edge (121).

3. The air filter according to claim 2, characterized in that: The sealing frame (42) is formed in situ and combined with the edge of the filter element (41); a reinforcement network (43) is also formed on one side of the filter element (41) and located in the area surrounded by the sealing frame (42); the reinforcement network (43) is integrally connected to the sealing frame (42) at the edge.

4. The air filter according to claim 2, characterized in that: A sunken supporting step (1111) is formed on the inner side of the first butt joint edge (111) and along the extension direction of the first butt joint edge (111), and a bearing surface (421) is formed on the outer periphery of the sealing frame (42), and the bearing surface (421) is adapted to the end surface of the supporting step (1111); an annular sealing groove (1211) is formed on the second butt joint edge (121) and on the side facing the first butt joint edge (111), and an annular sealing flange (422) is integrally formed on the sealing frame (42) and on the side facing the second butt joint edge (121), and when the first butt joint edge (111) is butt jointed with the second butt joint edge (121), the sealing flange (422) is The first butt joint edge (422) is elastically deformed adaptively under the pressure of the sealing groove (1211) and is filled in the sealing groove (1211); a group of threaded holes (1112) are formed on the end surface of the first butt joint edge (111), a group of through holes (1212) penetrating the sealing groove (1211) are provided on the second butt joint edge (121), and a group of fasteners (13) pass through the through holes (1212) and are fastened in the threaded holes (1112) to fasten the first butt joint edge (111) and the second butt joint edge (121) together; the first butt joint edge (111) is located above the second butt joint edge (121), and the fasteners (13) are located on the outside of the sealing flange (422).

5. The air filter according to claim 1, characterized in that: A housing (1) as an installation object is installed in an engine compartment as an installation carrier using a buffer connection assembly; the buffer connection assembly comprises at least one first connection buckle group (5) and at least one second connection buckle group (6); the first connection buckle group (5) comprises an insertion rod (51) arranged on the installation object and an elastic sleeve pad (52) arranged on the installation carrier; the insertion rod (51) comprises a rod body (511) and an anti-slip portion (512) located at the end of the rod body (511); the elastic sleeve pad (52) is formed with The second connecting buckle assembly (6) comprises an elastic snap ring (61) arranged on the installation object, a rigid bushing (62) accommodated in the elastic snap ring (61), and a locking member (63) passing through the rigid bushing (62), wherein the locking member (63) fixes the rigid bushing (62) on the installation carrier.

6. The air filter according to claim 5, characterized in that: The insertion hole (521) passes through the elastic sleeve (52) from top to bottom, and the top of the insertion hole (521) is in a trumpet shape; the insertion rod (51) is arranged vertically and is integrally formed on the support ear (53), and the support ear (53) is arranged on the installation object; an auxiliary block (513) connected to the support ear (53) is provided at the root of the rod body (511), and the auxiliary block (513), the support ear (53), and the rod body (511) are integrally formed and connected together; the auxiliary block (513) has a conical outer profile, and a plurality of thickness-reducing grooves (514) are formed on one side surface; the radial dimension of the rod body (511) is smaller than the radial dimension of the anti-slip portion (512); size; the elastic sleeve gasket (52) has an annular limiting groove (522) on the circumference thereof for assembling the elastic sleeve gasket (52) on the mounting carrier; the elastic snap ring (61) has a central accommodating hole (611) extending vertically therethrough for accommodating the rigid bushing (62); a group of pressure-bearing buffer blocks (613) are provided on the upper and lower surfaces of the elastic snap ring (61) around the central accommodating hole (611), and the distance between the upper surface and the lower surface of the pressure-bearing buffer block (613) is greater than the height of the rigid bushing (62); an annular groove (612) is formed on the circumference of the elastic snap ring (61) for engaging in a transverse notch on the mounting object.

7. The air filter according to claim 1, characterized in that: The exhaust pipe (3) comprises a flexible pipe body (31) and a rigid pipe body (32) connected together; the rigid pipe body (32) comprises an inner pipe body (323) and an outer cover body (322) arranged outside the inner pipe body (323); a plurality of partition plates (321) arranged along the extension direction of the inner pipe body (323) are arranged in the interval formed between the inner pipe body (323) and the outer cover body (322); a resonance cavity is formed between adjacent partition plates (321); and at least one opening is provided on the pipe wall of the inner pipe body (323) and corresponding to each resonance cavity, so that the internal space of the inner pipe body (323) is connected to the resonance cavity.

8. The air filter according to claim 7, characterized in that: The far end of the rigid tube body (32) is provided with a connecting neck (325), the connecting neck (325) is in the shape of a short tube, and a plurality of axially extending caliber adjustment notches (3252) are arranged circumferentially on the tube wall; an elastic sealing ring (34) is sleeved on the connecting neck (325); a second adjustment clamp (35) is also clamped on the elastic sealing ring (34); the end of the connecting neck (325) has a radially outwardly protruding flange (3251); under the clamping action of the second adjustment clamp (35), the elastic sealing ring (34) is compressed and retracted to form an interlocking with the flange (3251); the elastic sealing ring (34) comprises a coaxially connected inner ring body (34 1) and an outer ring body (342), the inner ring body (341) and the outer ring body (342) are connected to each other at the distal end and form an opening at the proximal end; the connecting neck (325) is inserted from the opening at the proximal end of the outer ring body (342) and embedded in the gap between the inner ring body (341) and the outer ring body (342); the second adjustment clamp (35) is clamped on the outer ring body (342); the caliber adjustment notch (3252) partially occupies the axial length of the connecting neck (325), thereby forming a non-notch section at the root of the connecting neck (325); a plurality of annular patterns are formed on the outer wall of the proximal end of the inner ring body (341), and the annular patterns are closely attached to the inner wall of the non-notch section.

9. An engine system, characterized in that: The air filter filters the air in the environment and then sends it into the intake manifold of the engine, or the air filter filters the air in the environment and then sends it into the turbocharger and then into the intake manifold of the engine. The air filter is the air filter according to any one of claims 1 to 8.

10. A motor vehicle, characterized in that: The air filter according to any one of claims 1 to 8 is installed in the engine compartment of the motor vehicle.

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