An air cleaner outlet pipe assembly

Abstract

The utility model belongs to the technical field of automobile parts, especially air filter outlet pipe assembly. Including resonance cavity subassembly and outlet pipe subassembly, resonance cavity subassembly includes resonance cavity shell. The utility model separates resonance cavity subassembly and outlet pipe subassembly through modularization design, has simplified manufacturing and maintenance process, realizes seamless seal at key connecting place using vibration friction welding process, and in combination with weather resistance material application, has improved structural strength, air tightness and environmental adaptability significantly, and the firm support and anti -rotation structure of inside resonance cavity inner core have guaranteed the stable sound attenuation performance, and optimized pipeline design and low resistance flow channel have guaranteed the air intake efficiency of engine, furthermore, through many installation platform and integrated interface constitute multipoint fixing and multifunctional connection system, effectively disperse vibration stress, and realize high -efficient integration with crankcase ventilation and other auxiliary system, finally make the assembly get comprehensive promotion in reliability, production efficiency and comprehensive performance.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an air filter outlet pipe assembly. Background Technology

[0002] The air filter outlet pipe assembly is an important component of the automotive engine intake system. Its core function is to deliver filtered air while using the Helmholtz resonance principle and a built-in cavity structure to eliminate specific frequency intake noise generated by the engine.

[0003] Existing air filter outlet pipe assemblies suffer from problems such as integrated design leading to complex molds, high maintenance costs, unstable inner core fixing, easy generation of abnormal noise, single fixing points, scattered interfaces, poor vibration resistance and layout, resulting in unsatisfactory performance.

[0004] Therefore, we propose an air filter outlet pipe assembly to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an air filter outlet pipe assembly that solves the problem of poor structural and functional stability of existing air filter outlet pipe assemblies mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] An air filter outlet pipe assembly includes a resonant cavity assembly and an outlet pipe assembly. The resonant cavity assembly includes a resonant cavity shell, an inner core of the resonant cavity is disposed inside the resonant cavity shell, and a resonant cavity end cap is disposed at one end of the resonant cavity shell.

[0010] The vent pipe assembly includes an upper vent pipe plate with one end fixed to the end cap of the resonant cavity, and a lower vent pipe plate is provided on one side of the upper vent pipe plate.

[0011] Furthermore, the resonant cavity core includes a filter cylinder with several through holes thereon, and at least two support plates are fixedly disposed on the surface of the filter cylinder.

[0012] Furthermore, the support plate is adapted to the contour of the resonant cavity shell to limit the rotation of the filter cartridge relative to the resonant cavity shell. At least two reinforcing plates are symmetrically arranged on both sides of the support plate, and the reinforcing plates are inclined.

[0013] Furthermore, an exhaust pipe is provided at the end of the resonant cavity shell away from the resonant cavity end cap, and a clamp is fitted at the end of the exhaust pipe away from the resonant cavity shell.

[0014] Furthermore, the top of the resonant cavity shell is provided with a connecting lug and an inclined tube located on one side of the connecting lug. One end of the inclined tube is inclined upward towards the exhaust pipe. The inclined tube and the connecting lug are combined to form a "V" shape. A first nut is embedded inside the connecting lug.

[0015] Furthermore, a first mounting platform and a second mounting platform are respectively provided on two adjacent sides of the resonant cavity shell, and a third mounting platform and a fourth mounting platform are respectively provided on two adjacent sides of the resonant cavity end cover.

[0016] Furthermore, one end of the resonant cavity end cap is fitted with a first flange sealing ring and several second nuts distributed outside the first flange sealing ring.

[0017] Furthermore, one end of the upper plate of the air outlet is nested with a first bushing that is the same number as the second nuts and corresponds one-to-one. A screw with one end screwed into the second nut is inserted through the inside of the first bushing.

[0018] Furthermore, a second flange sealing ring and several second bushings distributed outside the second flange sealing ring are embedded at the end of the upper plate of the vent pipe away from the end cover of the resonant cavity.

[0019] Furthermore, a curved pipe connector and a fixed connector located on one side of the upper plate of the vent pipe away from the lower plate of the vent pipe are provided. A fifth mounting platform and a side bend pipe located on one side of the fifth mounting platform are also provided on the lower plate of the vent pipe.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the present invention provides an air filter outlet pipe assembly, which has the following advantages:

[0022] This invention separates the resonant cavity assembly from the exhaust pipe assembly through a modular design, simplifying the manufacturing and maintenance process. It utilizes vibration friction welding to achieve seamless sealing at key connections, and the application of weather-resistant materials significantly improves structural strength, airtightness, and environmental adaptability. The robust support and anti-rotation structure of the internal resonant cavity core ensure stable noise reduction performance, while the optimized pipe design and low-resistance flow path guarantee engine intake efficiency. Furthermore, multiple mounting platforms and integrated interfaces form a multi-point fixing and multi-functional connection system, effectively dispersing vibration stress and achieving efficient integration with auxiliary systems such as crankcase ventilation. Ultimately, this results in a comprehensive improvement in the assembly's reliability, production efficiency, and overall performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the resonant cavity assembly structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the fifth mounting platform structure of this utility model;

[0025] Figure 3 This is a side view of the resonant cavity assembly structure of this utility model;

[0026] Figure 4 This is an exploded view of the resonant cavity assembly and the exhaust pipe assembly of this utility model;

[0027] Figure 5 This is a schematic diagram of the core structure of the resonant cavity of this utility model.

[0028] In the diagram: 1. Resonant cavity assembly; 11. Resonant cavity shell; 111. Connecting lug; 112. First mounting platform; 113. Second mounting platform; 114. Inclined tube; 115. First nut; 12. Resonant cavity inner core; 121. Filter cartridge; 122. Support plate; 123. Reinforcing plate; 13. Resonant cavity end cap; 131. Third mounting platform; 132. Fourth mounting platform; 14. First flange sealing ring; 15. Vent pipe; 16. Clamp; 17. Second nut; 2. Vent pipe assembly; 21. Upper vent pipe piece; 22. Lower vent pipe piece; 221. Fifth mounting platform; 23. Bent pipe connector; 24. Second flange sealing ring; 25. First bushing; 26. Second bushing; 261. Screw; 27. Fixed connector; 271. Reinforcing rib; 28. Side bend pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example

[0031] like Figure 1-5 As shown, an embodiment of the present invention provides an air filter outlet pipe assembly, including a resonant cavity assembly 1 and an outlet pipe assembly 2. The resonant cavity assembly 1 includes a resonant cavity shell 11, an inner resonant cavity core 12 is disposed inside the resonant cavity shell 11, and a resonant cavity end cap 13 is disposed at one end of the resonant cavity shell 11.

[0032] The vent pipe assembly 2 includes an upper vent pipe plate 21 with one end fixed to the resonant cavity end cap 13, and a lower vent pipe plate 22 is provided on one side of the upper vent pipe plate 21.

[0033] This air filter outlet pipe assembly emphasizes the synergy between high-efficiency filtration and intake efficiency. Through optimized pipe inner wall and air path design, it effectively reduces intake resistance, ensures ample air intake for the engine, thereby improving power and economy. At the same time, its structural design provides a reliable interface for the multi-stage filtration system, ensuring effective blocking of impurities in the air.

[0034] The air filter outlet pipe assembly has been specifically optimized in terms of materials and connection methods. The rigid substrate and flexible components can be made of high-temperature resistant and oil-resistant engineering plastics (nylon 66) or rubber materials (EPDM rubber) to adapt to the harsh environment of the engine compartment. The key interface connection is designed with quick docking structures such as clamp 16, which not only facilitates installation and maintenance, but also ensures the sealing reliability of the connection points and avoids performance degradation caused by air leakage.

[0035] The air filter outlet pipe assembly embodies an integrated design concept and adopts a short-path layout. Its structure helps reduce intake turbulence and meet increasingly stringent emission control requirements. By reserving standardized interfaces, it can integrate functional components such as crankcase ventilation pipe joints to achieve oil-gas separation and secondary intake control, further optimizing engine combustion efficiency and emission levels.

[0036] The connection between the resonant cavity shell 11 and the resonant cavity end cap 13, the butt joint between the upper plate of the vent pipe 21 and the lower plate of the vent pipe 22, and the connection between the curved pipe joint 23 and the upper plate of the vent pipe 21 are all integrally formed using vibration friction welding. The welding process fuses the two plastic parts at the molecular level, forming a permanent and 100% reliable sealing area, fundamentally eliminating the risk of leakage. This is an absolute advantage that cannot be matched by using sealing rings or adhesives.

[0037] The modular design divides the exhaust pipe 15 assembly system into a resonant cavity component 1, which is responsible for reducing intake noise at a specific frequency, and an exhaust pipe component 2, which is responsible for delivering air. This split structure simplifies mold design and manufacturing process, reduces production costs, and separates the resonant function from the pipeline function, making it easier to optimize and test different functions independently. It also facilitates the replacement of damaged parts during after-sales maintenance, improving the maintainability and economy of the product.

[0038] like Figure 1-5 As shown, in some embodiments, the resonant cavity core 12 includes a filter cylinder 121 with several through holes thereon, and at least two support plates 122 are fixedly disposed on the surface of the filter cylinder 121.

[0039] The numerous through holes on the filter cartridge 121 allow airflow to pass through. The internal cavity and through holes together form an acoustic resonance system, which can effectively cancel out the specific low-frequency noise generated by the engine. The two ends of the filter cartridge 121 respectively abut against the end cap 13 of the resonant cavity and the end of the inner wall of the resonant cavity shell 11 away from the end cap 13 of the resonant cavity, fixing the axial position of the filter cartridge 121 in the cavity and preventing it from moving under the impact of airflow. The support plate 122 cooperates with the inner wall of the resonant cavity shell 11 to prevent the filter cartridge 121 from rotating, ensuring its structural stability and consistency of acoustic performance.

[0040] like Figure 1-5 As shown, in some embodiments, the support plate 122 is adapted to the contour inside the resonant cavity housing 11 to limit the rotation of the filter cartridge 121 relative to the resonant cavity housing 11. At least two reinforcing plates 123 are symmetrically arranged on both sides of the support plate 122, and the reinforcing plates 123 are inclined.

[0041] The support plate 122 is adapted to the contour of the inner wall of the resonant cavity shell 11, forming a surface contact rather than a point contact, which greatly enhances the reliability of anti-rotation. The inclined symmetrical reinforcing plates 123 form a triangular support structure, which significantly enhances the structural strength and rigidity of the root of the support plate 122, effectively resisting the vibration fatigue that may be caused by the filter cartridge 121 and high-frequency airflow, preventing the support plate 122 from breaking due to long-term vibration, thereby extending the service life of the entire resonant cavity core 12.

[0042] like Figure 1-5 As shown, in some embodiments, the end of the resonant cavity housing 11 away from the resonant cavity end cap 13 is provided with an exhaust pipe 15, and the end of the exhaust pipe 15 away from the resonant cavity housing 11 is fitted with a clamp 16.

[0043] The exhaust pipe 15 serves as the main channel connecting the assembly to the engine intake manifold. The clamp 16 at its port provides a fast, reliable, and well-sealed connection. By tightening the clamp 16, it can be tightly secured to the joint of the engine intake pipe, forming a strong connection and effectively preventing air leakage, thus ensuring the sealing of the engine intake system.

[0044] like Figure 1-5 As shown, in some embodiments, the top of the resonant cavity housing 11 is provided with a connecting lug 111 and an inclined tube 114 located on one side of the connecting lug 111. One end of the inclined tube 114 is inclined upward towards the exhaust pipe 15. The inclined tube 114 and the connecting lug 111 are combined to form a "V" shape. A first nut 115 is embedded inside the connecting lug 111.

[0045] The connecting lug 111 and the inclined tube 114 enable the assembly to be installed in multiple functions on the vehicle and connected to auxiliary pipelines. The connecting lug 111 and its built-in first nut 115 provide the bolt connection point between the assembly and the vehicle body. The stability of the "V" shaped layout is utilized to achieve stable and reliable suspension fixation. The inclined design of the inclined tube 114 is used to connect other auxiliary pipelines such as the crankcase ventilation pipe (PCV pipe). Its orientation is conducive to pipeline layout. The integrated design with the connecting lug 111 saves space and simplifies the overall vehicle layout.

[0046] like Figure 1-5 As shown, in some embodiments, a first mounting platform 112 and a second mounting platform 113 are respectively provided on two adjacent sides of the resonant cavity housing 11, and a third mounting platform 131 and a fourth mounting platform 132 are respectively provided on two adjacent sides of the resonant cavity end cover 13.

[0047] The mounting platforms (first mounting platform 112, second mounting platform 113, third mounting platform 131 and fourth mounting platform 132) are the basis for multi-point fixation of the assembly in the engine compartment. By setting mounting platforms on adjacent sides of the resonant cavity housing 11 and the resonant cavity end cover 13, a multi-angle, multi-point fixation scheme is formed. This layout can better balance and disperse the vibration and stress experienced by the assembly during vehicle operation, prevent shaking or resonance caused by single-point fixation, and improve the working stability and reliability of the assembly.

[0048] like Figure 1-5 As shown, in some embodiments, one end of the resonant cavity end cap 13 is fitted with a first flange sealing ring 14 and a plurality of second nuts 17 distributed outside the first flange sealing ring 14.

[0049] The first flange sealing ring 14 ensures the seal between the resonant cavity end cover 13 and the upper plate 21 of the exhaust pipe, preventing unfiltered air leakage. The second nut 17, which is embedded in the resonant cavity end cover 13, provides a solid threaded foundation for screwing the screw 261 into the exhaust pipe assembly 2 from one side, realizing a detachable flange connection between the two large components, ensuring connection strength and facilitating assembly.

[0050] like Figure 1-5 As shown, in some embodiments, one end of the upper plate 21 of the air outlet pipe is nested with a first bushing 25 that is the same number as the second nuts 17 and corresponds one-to-one. The first bushing 25 is provided with a screw 261, one end of which is screwed into the second nut 17.

[0051] The first bushing 25 serves two purposes: first, to protect the plastic vent pipe plate 21 from wear by the threads of the screw 261; and second, to provide precise guidance for the screw 261, ensuring easy alignment with the second nut 17 on the resonant cavity end cap 13 during assembly. The screw 261 passes through the first bushing 25 and is screwed into the nut, tightly pressing the two components together and ensuring that the first flange sealing ring 14 is evenly stressed, forming a reliable seal.

[0052] like Figure 1-5 As shown, in some embodiments, the end of the upper plate 21 of the vent pipe away from the end cap 13 of the resonant cavity is provided with a second flange sealing ring 24 and a plurality of second bushings 26 distributed outside the second flange sealing ring 24.

[0053] The second flange sealing ring 24 is used to form a reliable end face seal when the flange face is connected to the flange of the external pipe. The second bushing 26 is a metal part embedded in the plastic body of the upper plate 21 of the air outlet pipe. It has threads or smooth holes inside and its function is to provide a strong support for the fastening bolts and prevent the plastic body from being squeezed and damaged or stripped when the bolts are tightened.

[0054] like Figure 1-5 As shown, in some embodiments, a curved pipe connector 23 and a fixed connector 27 located on one side of the upper plate 21 of the vent pipe away from the lower plate 22 of the vent pipe are provided. A fifth mounting platform 221 and a side bend pipe 28 located on one side of the fifth mounting platform 221 are also provided on the lower plate 22 of the vent pipe. A number of reinforcing ribs 271 are also provided on the fixed connector 27 to improve the connection strength between the fixed connector 27 and the upper plate 21 of the vent pipe.

[0055] The curved pipe connector 23 is used to connect the fuel vaporization system (EVAP) pipeline. Its curved shape facilitates pipeline routing. The fixed connector 27 provides a connection point for other sensors or pipelines. The fifth mounting plate 221 provides another independent fixing point for the exhaust pipe assembly 2. These connectors and interfaces integrated on the exhaust pipe assembly 2 greatly enrich the functions of the assembly, meet the connection requirements of various engine systems, and reflect a high degree of integrated design.

[0056] In summary, this utility model simplifies the manufacturing and maintenance process by separating the resonant cavity assembly 1 and the exhaust pipe assembly 2 through modular design. It achieves seamless sealing at key connections using vibration friction welding technology and significantly improves structural strength, airtightness, and environmental adaptability by combining the application of weather-resistant materials. The stable support and anti-rotation structure of the internal resonant cavity core 12 ensures stable noise reduction performance, while the optimized pipe design and low-resistance flow channel ensure the engine's intake efficiency. In addition, the multi-point fixing and multi-functional connection system formed by multiple mounting platforms and integrated interfaces effectively disperses vibration stress and achieves efficient integration with auxiliary systems such as crankcase ventilation. Ultimately, the assembly achieves a comprehensive improvement in reliability, production efficiency, and overall performance.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air filter outlet pipe assembly, comprising a resonant cavity assembly (1) and an outlet pipe assembly (2), characterized in that: The resonant cavity assembly (1) includes a resonant cavity shell (11), a resonant cavity core (12) is disposed inside the resonant cavity shell (11), and a resonant cavity end cap (13) is disposed at one end of the resonant cavity shell (11). The vent pipe assembly (2) includes an upper vent pipe plate (21) with one end fixed to the resonant cavity end cap (13), and a lower vent pipe plate (22) is provided on one side of the upper vent pipe plate (21).

2. The air filter outlet pipe assembly according to claim 1, characterized in that: The resonant cavity core (12) includes a filter cylinder (121) with several through holes thereon, and at least two support plates (122) are fixedly disposed on the surface of the filter cylinder (121).

3. The air filter outlet pipe assembly according to claim 2, characterized in that: The support plate (122) is adapted to the contour inside the resonant cavity shell (11) to limit the rotation of the filter cartridge (121) relative to the resonant cavity shell (11). At least two reinforcing plates (123) are symmetrically arranged on both sides of the support plate (122), and the reinforcing plates (123) are inclined.

4. The air filter outlet pipe assembly according to claim 1, characterized in that: The resonant cavity shell (11) is provided with an exhaust pipe (15) at one end away from the resonant cavity end cap (13), and a clamp (16) is fitted on the other end of the exhaust pipe (15) away from the resonant cavity shell (11).

5. The air filter outlet pipe assembly according to claim 1, characterized in that: The top of the resonant cavity shell (11) is provided with a connecting lug (111) and an inclined tube (114) located on one side of the connecting lug (111). One end of the inclined tube (114) is inclined upward towards the exhaust pipe (15). The inclined tube (114) and the connecting lug (111) are combined to form a "V" shape. A first nut (115) is embedded inside the connecting lug (111).

6. The air filter outlet pipe assembly according to claim 1, characterized in that: The resonant cavity housing (11) has a first mounting platform (112) and a second mounting platform (113) respectively on two adjacent sides, and the resonant cavity end cap (13) has a third mounting platform (131) and a fourth mounting platform (132) respectively on two adjacent sides.

7. The air filter outlet pipe assembly according to claim 1, characterized in that: One end of the resonant cavity end cap (13) is fitted with a first flange sealing ring (14) and several second nuts (17) distributed outside the first flange sealing ring (14).

8. The air filter outlet pipe assembly according to claim 1, characterized in that: One end of the upper plate (21) of the air outlet pipe is nested with a first bushing (25) that is the same number as the second nut (17) and corresponds one-to-one. The first bushing (25) is provided with a screw (261) with one end screwed into the second nut (17).

9. The air filter outlet pipe assembly according to claim 1, characterized in that: The upper plate (21) of the vent pipe is provided with a second flange sealing ring (24) and several second bushings (26) distributed outside the second flange sealing ring (24) at the end away from the resonant cavity end cap (13).

10. An air filter outlet pipe assembly according to claim 1, characterized in that: The upper part (21) of the air outlet pipe is provided with a curved pipe joint (23) and a fixed joint (27) located on the side of the curved pipe joint (23) away from the lower part (22) of the air outlet pipe. The lower part (22) of the air outlet pipe is also provided with a fifth mounting platform (221) and a side bend pipe (28) located on the side of the fifth mounting platform (221).

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