A noise reducing air induction tube assembly

Abstract

The utility model discloses a kind of noise reduction air guide pipe assemblies, including first noise reduction air guide pipe body, second noise reduction air guide pipe body and protection mechanism, connection structure is provided between first noise reduction air guide pipe body and second noise reduction air guide pipe body, connection structure is used to realize the fixed connection of first noise reduction air guide pipe body and second noise reduction air guide pipe body, protection mechanism is installed in the outer wall of the connecting place of first noise reduction air guide pipe body and second noise reduction air guide pipe body, protection mechanism includes first arc-shaped casing and second arc-shaped casing, first arc-shaped casing and second arc-shaped casing form the protective sleeve matched with the outer wall of first noise reduction air guide pipe body and second noise reduction air guide pipe body and enclose.The utility model discloses a kind of noise reduction air guide pipe assemblies, it has good sealing performance, and by setting protection mechanism, when leakage occurs at first noise reduction air guide pipe body and second noise reduction air guide pipe body, driver can be reminded by protection mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of air duct technology, specifically relating to a noise reduction air duct assembly. Background Technology

[0002] In automotive intake system design, the use of multi-segment noise-reducing air bleeders can significantly improve spatial layout, enhance engine performance, reduce noise and vibration, and facilitate maintenance. Particularly in engine intake systems, multi-segment noise-reducing air bleeder designs can more flexibly adapt to different vehicle models and structures, thereby achieving the aforementioned optimizations. However, to achieve these effects, special attention must be paid to the sealing of the joints in the design of multi-segment noise-reducing air bleeders, as these connection points are often the main source of air leakage, and these leaks are often not easily noticed by the driver during use.

[0003] The biggest problem caused by this leak is reduced power; the engine feels underpowered during operation, and acceleration becomes sluggish. More seriously, unfiltered air entering the engine directly causes a leaner air-fuel mixture in the combustion chamber. This leaning is especially pronounced under high loads, preventing the engine from fully releasing energy during combustion. This not only further reduces power but can even affect the engine's starting process. In this situation, it becomes difficult for the required air-fuel mixture density to return to normal, leading to starting difficulties or even failure to start.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a noise-reducing air duct assembly that can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows: A noise-reducing air intake tube assembly includes a first noise-reducing air intake tube body, a second noise-reducing air intake tube body, and a protective mechanism. A connecting structure is provided between the first and second noise-reducing air intake tube bodies for fixed connection. The protective mechanism is installed on the outer wall of the connection between the first and second noise-reducing air intake tube bodies. The protective mechanism includes a first arc-shaped shell and a second arc-shaped shell, which together form a protective sleeve that matches the outer wall of the first and second noise-reducing air intake tube bodies. The protective sleeve is used to seal the connection between the first and second noise-reducing air intake tube bodies. A connecting cylinder is fixedly connected to the first arc-shaped shell. A one-way valve is installed inside the connecting cylinder, and a ringing assembly matching the one-way valve is installed inside the connecting cylinder. The ringing assembly is activated when air enters the connecting cylinder.

[0007] In one or more embodiments of the present invention, the ringing assembly includes a metal baffle fixed to the inner wall of the connecting cylinder, and an elastic connector is fixedly connected to the connecting cylinder below the metal baffle. One end of the elastic connector is fixedly connected to a metal sheet that matches the metal baffle, and the metal sheet is used to cover the inner diameter of the metal baffle.

[0008] In one or more embodiments of this utility model, a sealing cap is threaded onto the connecting cylinder, and an anti-loss mechanism is installed on the sealing cap.

[0009] In one or more embodiments of this utility model, the anti-loss mechanism includes a strong magnetic block, which is fixedly connected to the back of the sealing cover.

[0010] In one or more embodiments of this utility model, the outer wall of the first noise reduction air duct body is fixedly connected with a first reinforcing rib extending in the axial direction and a second reinforcing rib extending in the circumferential direction, and the first reinforcing rib and the second reinforcing rib are arranged in a cross manner.

[0011] In one or more embodiments of this utility model, the outer wall of the second noise reduction air duct is fixedly connected with a third reinforcing rib extending axially and a fourth reinforcing rib extending circumferentially, wherein the third reinforcing rib and the fourth reinforcing rib are arranged in a cross pattern.

[0012] In one or more embodiments of this utility model, a plug-in part is fixedly connected to the first noise reduction air duct body, and a plug-in groove matching the plug-in part is provided on the second noise reduction air duct body.

[0013] In one or more embodiments of this utility model, at least two limiting blocks are fixedly connected to the plug-in portion, and a limiting groove matching the limiting block is provided on the outer wall of the plug-in groove. The limiting groove has an axially extending inlet section and a circumferentially extending locking section. The end of the locking section forms a bottom wall for the limiting block to abut against. After the limiting block is axially inserted into the limiting groove through the inlet section, the first noise reduction air duct body or the second noise reduction air duct body is rotated to make the limiting block move circumferentially along the locking section and abut against the bottom wall, so as to achieve the pre-fixation of the first pipe and the second pipe.

[0014] In one or more embodiments of this utility model, a second threaded hole is provided on the second noise reduction air intake tube body, and a first threaded hole matching the second threaded hole is provided on the first noise reduction air intake tube body. In the pre-fixed state, the positions of the first threaded hole and the second threaded hole are matched.

[0015] In one or more embodiments of this utility model, a first bolt matching the second threaded hole is installed on the second noise reduction air duct body, and the first bolt passes through the second threaded hole and is threadedly connected to the first threaded hole.

[0016] Compared with the prior art, the noise reduction air duct assembly of this utility model has better sealing performance. By setting a protective mechanism, when leakage occurs at the first noise reduction air duct body and the second noise reduction air duct body, the protective mechanism can remind the driver, making it easier for the driver to notice the leakage at the connection between the first noise reduction air duct body and the second noise reduction air duct body. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a noise-reducing air duct assembly in one embodiment of the present invention; Figure 2 This is a partial exploded view of a noise-reducing air duct assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the second noise-reducing air duct body in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first noise-reducing air duct body in one embodiment of the present invention; Figure 5 This is an exploded view of the protective mechanism in one embodiment of the present invention; Figure 6 This is a cross-sectional view of a noise-reducing air duct assembly according to an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the structure at point A in the middle.

[0019] Explanation of key figure labels: 1. First noise-reducing air intake tube body; 101. First reinforcing rib; 102. Second reinforcing rib; 103. Limiting block; 104. First threaded hole; 2. Second noise-reducing air intake tube body; 201. Third reinforcing rib; 202. Fourth reinforcing rib; 203. Limiting groove; 204. Second threaded hole; 3. First sealing ring; 4. Second sealing ring; 5. First bolt; 6. Protective mechanism; 7. First arc-shaped shell; 701. First connecting ear; 7011. First through hole; 8. Second arc-shaped shell; 801. Second connecting ear; 8011. Second through hole; 9. Second bolt; 10. One-way valve; 11. Connecting cylinder; 12. Elastic connector; 13. Metal sheet; 14. Metal baffle; 15. Sealing cover; 16. Filter layer; 17. Anti-loss mechanism; 18. Strong magnetic block. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0021] like Figures 1-2 As shown, a noise-reducing air duct assembly according to one embodiment of the present invention includes a first noise-reducing air duct body 1 and a second noise-reducing air duct body 2. A connecting structure is provided between the first noise-reducing air duct body 1 and the second noise-reducing air duct body 2 to achieve a fixed connection between the first noise-reducing air duct body 1 and the second noise-reducing air duct body 2. The end of the first noise-reducing air duct body 1 and the second noise-reducing air duct body 2 away from the connecting structure is connected to the engine and the intake system.

[0022] like Figure 1As shown, the outer wall of the first noise-reducing air intake tube 1 is fixedly connected with a first reinforcing rib 101 extending axially and a second reinforcing rib 102 extending circumferentially, with the first reinforcing rib 101 and the second reinforcing rib 102 arranged intersectingly. The outer wall of the second noise-reducing air intake tube 2 is fixedly connected with a third reinforcing rib 201 extending axially and a fourth reinforcing rib 202 extending circumferentially, with the third reinforcing rib 201 and the fourth reinforcing rib 202 arranged intersectingly. The strength of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 is enhanced by setting the first reinforcing rib 101, the third reinforcing rib 201, the second reinforcing rib 102, and the fourth reinforcing rib 202.

[0023] like Figure 1 ~as Figure 4 As shown, the connection structure includes a plug-in portion fixedly connected to the first noise-reducing air intake tube 1 and a plug-in groove on the second noise-reducing air intake tube 2 that matches the plug-in portion. At least two limiting blocks 103 are fixedly connected to the plug-in portion, and a limiting groove 203 matching the limiting block 103 is formed on the outer wall of the plug-in groove. The limiting groove 203 has an axially extending inlet section and a circumferentially extending locking section, with the end of the locking section forming a bottom wall for the limiting block 103 to abut against. After the limiting block 103 is axially inserted into the limiting groove 203 through the inlet section, rotating the first or second noise-reducing air intake tube causes the limiting block 103 to move circumferentially along the locking section and abut against the bottom wall, thereby achieving pre-fixation of the first and second pipes.

[0024] In other words, the inlet section of the limiting groove 203 and the limiting block 103 are initially misaligned. When the limiting block 103 is inserted into the inlet section of the limiting groove 203, the first noise-reducing air duct 1 and the second noise-reducing air duct 2 are in an interleaved state. When the limiting block 103 is rotated to contact the bottom wall of the limiting groove 203, the first noise-reducing air duct 1 and the second noise-reducing air duct 2 are in a state as follows: Figure 1 The state shown is such that the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 are not easily separated.

[0025] like Figures 1-4 As shown, a first sealing ring 3 is installed on the insertion part, and a second sealing ring 4 is installed on the bottom wall of the insertion groove. When the first noise reduction air duct body 1 and the second noise reduction air duct body 2 are pre-fixed by the limiting block 103 and the limiting groove 203, the first sealing ring 3 and the second sealing ring 4 are squeezed by the first noise reduction air duct body 1 and the second noise reduction air duct body 2 respectively, so as to achieve the sealing at the connection between the first noise reduction air duct body 1 and the second noise reduction air duct body 2, and reduce the possibility of air leakage from the first noise reduction air duct body 1 and the second noise reduction air duct body 2.

[0026] like Figures 1-4As shown, to further secure the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2, a second threaded hole 204 is provided on the second noise-reducing air intake tube 2, and a first threaded hole 104 matching the second threaded hole 204 is provided on the first noise-reducing air intake tube 1. In the pre-fixed state, the positions of the first threaded hole 104 and the second threaded hole 204 are matched. A first bolt 5 matching the second threaded hole 204 is installed on the second noise-reducing air intake tube 2, and the first bolt 5 passes through the second threaded hole 204 and is threadedly connected to the first threaded hole 104. After securing the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 with multiple first bolts 5, the connection stability of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 can be further improved.

[0027] like Figure 1 As shown, a protective mechanism 6 is also provided on the outside of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2. The protective mechanism 6 seals and wraps the connection between the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2. When the seal at the connection between the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 is damaged, the protective mechanism 6 can detect the seal at the connection between the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 and can emit an abnormal sound to realize an alarm. It can also realize secondary sealing at the leakage points of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2.

[0028] Specifically, such as Figures 5-7 As shown, the protective mechanism 6 includes a first arc-shaped shell 7 and a second arc-shaped shell 8. The first arc-shaped shell 7 and the second arc-shaped shell 8 together form a protective sleeve that matches the outer wall of the first noise-reducing air duct 1 and the second noise-reducing air duct 2. The protective sleeve is used to seal the connection between the first noise-reducing air duct 1 and the second noise-reducing air duct 2. That is, the first arc-shaped shell 7 and the second arc-shaped shell 8 can cooperate to wrap the connection between the first noise-reducing air duct 1 and the second noise-reducing air duct 2. When the connection between the first noise-reducing air duct 1 and the second noise-reducing air duct 2 leaks, external air is not easily allowed to enter the first noise-reducing air duct 1 and the second noise-reducing air duct 2 through the protective mechanism 6.

[0029] Under normal circumstances, the connection points of the first arc-shaped shell 7, the second arc-shaped shell 8, the first noise-reducing air intake tube 1, and the second noise-reducing air intake tube 2 are all equipped with sealing structures.

[0030] like Figures 5-7As shown, a first connecting lug 701 is fixedly connected to the first arc-shaped housing 7, and a second connecting lug 801 matching the first connecting lug 701 is fixedly connected to the second arc-shaped housing 8. The first connecting lug 701 and the second connecting lug 801 are respectively provided with a first through hole 7011 and a second through hole 8011. A second bolt 9 is installed on the second arc-shaped housing 8. The second bolt 9 passes through the second connecting lug 801 and then through the first connecting lug 701, and is then threaded with a nut to fix the first arc-shaped housing 7 and the second arc-shaped housing 8. The contact surfaces of the first arc-shaped housing 7 and the second arc-shaped housing 8 also have a sealing structure to ensure a tight seal at the connection point.

[0031] like Figures 5-7 As shown, a connecting cylinder 11 is fixedly connected to the first arc-shaped housing 7. A one-way valve 10 is installed inside the connecting cylinder 11. A bell assembly that matches the one-way valve 10 is installed inside the connecting cylinder 11. The bell assembly is activated when air enters the connecting cylinder 11.

[0032] like Figures 5-7 As shown, the bell assembly includes a metal baffle 14 fixed to the inner wall of the connecting cylinder 11. An elastic connector 12 is fixedly connected to the connecting cylinder 11 below the metal baffle 14. One end of the elastic connector 12 is fixedly connected to a metal piece 13 that matches the metal baffle 14, and the metal piece 13 covers the inner diameter of the metal baffle 14. Initially, the metal piece 13 completely blocks the inner diameter of the metal baffle 14. If the seal at the connection between the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2 is damaged, a negative pressure will be generated when the noise-reducing air intake tube receives air. This negative pressure is applied to the metal piece 13, which then transmits the pressure to the elastic connector 12. The elastic connector 12 deforms, causing the metal piece 13 to separate from the metal baffle 14. When the negative pressure decreases, the elastic connector 12 recovers the force generated by its deformation, causing the metal piece 13 to collide with the metal baffle 14. The collision of the two metals produces a sound, serving as a warning while the vehicle is in motion.

[0033] To reduce the possibility of air impurities entering the noise reduction air duct through the connecting tube 11, such as... Figure 7 As shown, a filter layer 16 is also provided on the inner wall of the connecting cylinder 11 to filter impurities in the air entering the connecting cylinder 11.

[0034] like Figures 5-7 As shown, a sealing cap 15 is threaded onto the connecting cylinder 11. The sealing cap 15 can block the inlet end of the connecting cylinder 11, preventing gas from entering from the connecting cylinder 11 as much as possible. That is, when the driver discovers air leakage at the connection between the first noise reduction air duct 1 and the second noise reduction air duct 2, the air inlet end of the connecting cylinder 11 can be sealed by the sealing cap 15 to prevent the metal plate 13 and the metal baffle 14 from continuing to collide.

[0035] like Figures 5-7 As shown, an anti-loss mechanism 17 is installed on the sealing cover 15. Under normal circumstances, the anti-loss mechanism 17 can be used to fix the sealing cover 15 to a certain place on the vehicle so that it will not fall off. In this embodiment, the anti-loss mechanism 17 is a strong magnetic block 18, and the strong magnetic block 18 is fixedly connected to the back of the sealing cover 15. The strong magnetic block 18 can make the sealing cover 15 adhere to a certain place on the vehicle, so as to fix the sealing cover 15.

[0036] During assembly of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2, the first sealing ring 3 and the second sealing ring 4 are first fitted onto the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2, respectively. Then, the limiting block 103 is inserted into the limiting groove 203. The first noise-reducing air intake tube 1 or the second noise-reducing air intake tube 2 is then rotated according to the trajectory of the limiting groove 203, so that the limiting block 103 contacts the bottom wall of the limiting groove 203. Pre-fixation is achieved through the cooperation of the limiting block 103 and the limiting groove 203. Finally, the first bolt 5 is passed through the second threaded hole 204 and screwed into the first threaded hole 104 to achieve secondary fixation of the first noise-reducing air intake tube 1 and the second noise-reducing air intake tube 2.

[0037] The assembly of the protective mechanism 6 is also relatively simple. The first arc-shaped shell 7 and the second arc-shaped shell 8 are fitted onto the connection between the first noise-reducing air duct body 1 and the second noise-reducing air duct body 2, and then the second connecting ear 801 and the first connecting ear 701 are fixed using the second bolt 9. Due to the presence of the first reinforcing rib 101 and the third reinforcing rib 201, the movement of the protective mechanism 6 is restricted.

[0038] When the first noise-reducing air intake pipe 1 and the second noise-reducing air intake pipe 2 leak, a negative pressure is generated during air intake. This negative pressure is applied to the metal plate 13, which then transmits the pressure to the elastic connector 12. The elastic connector 12 deforms, causing the metal plate 13 to separate from the metal baffle 14. When the negative pressure decreases, the elastic connector 12 recovers from its deformation, causing the metal plate 13 to collide with the metal baffle 14. The collision of the two metals produces a sound, serving as a warning while the vehicle is in motion.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise-reducing airway assembly, characterized in that, include: A first noise-reducing air intake tube and a second noise-reducing air intake tube are provided, and a connecting structure is provided between the first noise-reducing air intake tube and the second noise-reducing air intake tube. The connecting structure is used to realize the fixed connection between the first noise-reducing air intake tube and the second noise-reducing air intake tube. A protective mechanism is installed on the outer wall of the connection between the first noise-reducing air duct and the second noise-reducing air duct. The protective mechanism includes a first arc-shaped shell and a second arc-shaped shell. The first arc-shaped shell and the second arc-shaped shell are enclosed to form a protective sleeve that matches the outer wall of the first noise-reducing air duct and the second noise-reducing air duct. The protective sleeve is used to seal the connection between the first noise-reducing air duct and the second noise-reducing air duct. A connecting cylinder is fixedly connected to the first arc-shaped housing. A one-way valve is installed inside the connecting cylinder, and a bell assembly matching the one-way valve is installed inside the connecting cylinder. The bell assembly is activated when air enters the connecting cylinder.

2. The noise-reducing air duct assembly according to claim 1, characterized in that, The ringing assembly includes a metal baffle fixed to the inner wall of the connecting cylinder. The connecting cylinder is fixedly connected to an elastic connector below the metal baffle. One end of the elastic connector is fixedly connected to a metal sheet that matches the metal baffle. The metal sheet is used to cover the inner diameter of the metal baffle.

3. A noise-reducing air duct assembly according to claim 1 or 2, characterized in that, The connecting cylinder is threaded with a sealing cap, and the sealing cap is equipped with an anti-loss mechanism.

4. The noise-reducing air duct assembly according to claim 3, characterized in that, The anti-loss mechanism includes a strong magnetic block, which is fixedly connected to the back of the sealing cover.

5. The noise-reducing air duct assembly according to claim 1, characterized in that, The outer wall of the first noise reduction air duct is fixedly connected with a first reinforcing rib extending along the axial direction and a second reinforcing rib extending along the circumferential direction, and the first and second reinforcing ribs are arranged in a cross manner.

6. The noise-reducing air duct assembly according to claim 1, characterized in that, The outer wall of the second noise reduction air duct is fixedly connected with a third reinforcing rib extending along the axial direction and a fourth reinforcing rib extending along the circumferential direction, and the third and fourth reinforcing ribs are arranged in a cross pattern.

7. The noise-reducing air duct assembly according to claim 1, characterized in that, The first noise reduction air intake tube is also fixedly connected to a plug-in part, and the second noise reduction air intake tube is provided with a plug-in groove that matches the plug-in part.

8. The noise-reducing air duct assembly according to claim 7, characterized in that, At least two limiting blocks are fixedly connected to the plug-in part, and a limiting groove matching the limiting blocks is opened on the outer wall of the plug-in groove; The limiting groove has an axially extending inlet section and a circumferentially extending locking section, the end of which forms a bottom wall for the limiting block to abut against. After the limiting block is axially inserted into the limiting groove through the inlet section, the first noise reduction air duct body or the second noise reduction air duct body is rotated so that the limiting block moves circumferentially along the locking section and abuts against the bottom wall, thereby achieving the pre-fixation of the first noise reduction air duct body or the second noise reduction air duct body.

9. A noise-reducing air duct assembly according to claim 8, characterized in that, The second noise reduction air intake tube has a second threaded hole, and the first noise reduction air intake tube has a first threaded hole that matches the second threaded hole. In the pre-fixed state, the positions of the first threaded hole and the second threaded hole are matched.

10. A noise-reducing air duct assembly according to claim 9, characterized in that, The second noise reduction air intake tube is equipped with a first bolt that matches the second threaded hole. The first bolt passes through the second threaded hole and is threadedly connected to the first threaded hole.

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