Automobile noise reduction air inlet system and automobile

By setting up buffer parts and air intake pipes in the car's intake system, and using the expansion chamber and misaligned connections for gas buffering, the problem of air intake noise transmission in light trucks is solved, significantly reducing the noise inside the car and improving the NVH of the whole vehicle performance.

CN222228712UActive Publication Date: 2024-12-24HEBEI CHANGAN AUTOMOBILE
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Patent Information

Application Number
CN202420366396.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-27
Publication Date
2024-12-24
Estimated Expiration
2034-02-27

AI Technical Summary

Technical Problem

Due to the layout characteristics of light truck cars, the air intake noise is easily transmitted to the cab, affecting the ride comfort of the whole vehicle. The noise silence volume cannot be increased under space limitations, and it cannot effectively weaken the low-frequency radiation noise.

Method used

An automobile noise reduction air intake system is designed. By setting a buffer member and an intake pipe on the housing, the gas is buffered multiple times by using the expansion chamber and the misaligned connection to prevent the gas from entering the housing directly, thereby reducing noise transmission.

Benefits of technology

It effectively reduces the low-frequency noise generated by the air intake system, improves the vehicle's NVH performance, and improves riding comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of automobile noise reduction, and particularly discloses an automobile noise reduction air inlet system and an automobile. The automobile noise reduction air inlet system comprises a shell, and the shell is provided with an air inlet; the air inlet pipe is arranged outside the shell, and the outlet end of the air inlet pipe is communicated with the air inlet; the buffer part is detachably connected to the shell, the buffer part comprises an expansion cavity and an input port communicated with the expansion cavity, the inlet end of the air inlet pipe is communicated with the expansion cavity, and the input port and the inlet end of the air inlet pipe are arranged in a staggered mode. By means of the buffering piece and the air inlet pipe, pressure air entering the shell can be turned and buffered for multiple times, so that the impact force of the air finally entering the shell is effectively reduced, the effect of reducing noise is achieved, and then the NVH performance of a vehicle is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of automobile noise reduction, in particular to an automobile noise reduction air intake system and an automobile. Background Art

[0002] For fuel vehicles, intake and exhaust noise is the main noise source, which has a great impact on the NVH (noise, vibration and harshness) performance of the whole vehicle. For light trucks, the air intake system is often very close to the passenger compartment, and the automobile air intake system is a collection of parts that introduce air or mixed gas into the engine cylinder. During the acceleration and deceleration of the car, the low-frequency noise radiated by the air intake port is very easy to be transmitted into the car, resulting in a serious roar.

[0003] Due to the characteristics of the overall layout of the light truck system, the air intake system is mostly arranged under the co-pilot seat, very close to the cab, which can easily cause the low-frequency radiation noise of the air intake system to be directly transmitted into the cab, seriously affecting the ride comfort of the entire vehicle. At the same time, due to the limitation of space layout, the silencing volume of the air intake air filter system of light truck models cannot be increased, and then the air intake system cannot fully weaken the low-frequency radiation noise generated by the air intake system, resulting in the problem of low-frequency roaring during acceleration in the car. In view of this, the applicant proposed a car noise reduction air intake system and a car. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a noise reduction automobile air intake system and an automobile, so as to solve the problem of high noise of the automobile air intake system in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an automobile noise reduction air intake system, comprising:

[0006] A housing, wherein the housing is provided with an air inlet;

[0007] An air inlet pipe is arranged outside the shell, and an outlet end of the air inlet pipe is communicated with the air inlet;

[0008] The buffer is detachably connected to the shell, and the buffer comprises an expansion cavity and an input port connected to the expansion cavity, the inlet end of the air intake pipe is connected to the expansion cavity, wherein the input port is staggered with the inlet end of the air intake pipe.

[0009] Optionally, a connecting portion is provided on the buffer component, and the buffer component is detachably connected to the air intake pipe via the connecting portion, wherein the connecting portion is used to introduce the gas in the expansion cavity into the air intake pipe.

[0010] Optionally, the connecting portion is an arc-shaped tube, one end of the arc-shaped tube is fixedly connected to the buffer component, and the other end of the arc-shaped tube can enter the air intake pipe and be sealed and connected to the air intake pipe.

[0011] Optionally, a positioning sleeve is provided at the input end of the air intake pipe for positioning the connecting portion, and a sealing ring is provided inside the positioning sleeve.

[0012] Optionally, the input port and the input end of the connecting portion are arranged in a staggered manner.

[0013] Optionally, a first connecting rib and a second connecting rib are fixedly connected to the buffer component, the first connecting rib is provided with a first connecting member that can be detachably connected to the shell, and the second connecting rib is provided with a second connecting member that can be connected to the shell.

[0014] Optionally, a third connecting piece that can be detachably connected to the shell is provided in the expansion cavity.

[0015] Optionally, a cover body is further included, and the cover body is detachably connected to the shell. A connecting structure is provided between the cover body and the shell, and the connecting structure includes a first connecting component and a second connecting component.

[0016] Optionally, the first connecting component includes a plurality of lock catches arranged on the shell and a plurality of lock tongues arranged on the cover body, and the lock tongues can be snap-engaged with the corresponding lock catches; the second connecting component includes a plurality of fixing members arranged on the cover body and a plurality of fasteners arranged on the shell, and the fixing members can be threadedly connected with the corresponding fasteners.

[0017] The utility model also provides an automobile, comprising the above-mentioned automobile noise reduction air intake system.

[0018] As described above, the automobile noise reduction air intake system proposed by the utility model has the following beneficial effects:

[0019] (1) Compared with the prior art, the present invention provides a buffer component, and an expansion chamber is provided in the buffer component. After the gas with a certain pressure enters the expansion chamber through the input port, due to the offset arrangement of the input port and the inlet end of the intake pipe, the gas will not directly enter the intake pipe to reach the inside of the shell, but will enter the expansion chamber for buffering before entering the intake pipe, thereby achieving the purpose of noise transmission loss and preventing the pressurized gas from directly entering the shell and impacting the internal components to generate noise.

[0020] (2) Compared with the prior art, the present invention also avoids direct communication between the input port and the air inlet by setting up an air inlet pipe, thereby achieving the purpose of secondary buffering. Therefore, when used in conjunction with a buffer component, the gas can be buffered in a confined space to reduce the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure 2 Shown is a schematic structural diagram of a housing in one embodiment of the utility model;

[0023] Figure 3 Shown is a schematic diagram of the structure of the air intake pipe in one embodiment of the utility model;

[0024] Figure 4 Shown is a schematic structural diagram of a buffer member in one embodiment of the utility model;

[0025] Figure 5 Shown is a top view of an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] Shell 1, buffer 2, input port 3, connecting part 4, air inlet pipe 5, positioning sleeve 6, air inlet 7, cover 8, lock buckle 9, lock tongue 10, fixing part 11, fastener 12, first connecting rib 13, first connecting part 14, second connecting rib 15, second connecting part 16, third connecting part 17. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] It should be noted that the diagrams provided in the present embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be changed at will, and the layout of the components may be more complicated. The structure, proportion, size, etc. shown in the diagrams attached to this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0030] like Figure 1-Figure 5 As shown, the utility model proposes an automobile noise reduction air intake system.

[0031] In one exemplary embodiment, a vehicle noise reduction air intake system includes:

[0032] The housing 1 is provided with an air inlet 7;

[0033] An air inlet pipe 5 is arranged outside the housing 1, and an outlet end of the air inlet pipe 5 is connected to an air inlet 7;

[0034] The buffer member 2 is detachably connected to the shell 1, and includes an expansion cavity and an input port 3 connected to the expansion cavity. The inlet end of the air intake pipe 5 is connected to the expansion cavity, wherein the input port 3 and the inlet end of the air intake pipe 5 are staggered.

[0035] In the present embodiment, a buffer member 2 is provided, and an expansion cavity is provided in the buffer member 2. After the gas with a certain pressure enters the expansion cavity through the input port 3, since the input port 3 and the inlet end of the intake pipe 5 are offset, the gas will not directly enter the intake pipe 5 to reach the inside of the shell 1, but will enter the expansion cavity for buffering before entering the intake pipe 5, thereby achieving the purpose of noise transmission loss and preventing the pressurized gas from directly entering the shell 1 and colliding with internal components to generate noise.

[0036] At the same time, the present embodiment also prevents the input port 3 from being directly connected to the air inlet 7 by setting up the air intake pipe 5, thereby achieving the purpose of secondary buffering. Therefore, when used in conjunction with the buffer member 2, the gas can be buffered in a confined space, further reducing the generation of noise and improving the NVH performance of the vehicle.

[0037] In this embodiment, the arrangement of the air inlet 7 and the air inlet pipe 5 can be as follows: Figure 2 As shown, there is an angle between the outlet end of the intake pipe 5 and the intake port 7. The angle in this embodiment is 90°, so that the gas in the intake pipe 5 enters the shell 1 after being buffered by the corner, thereby achieving the effect of reducing the impact force of the airflow and further reducing the generation of noise.

[0038] It is worth mentioning that in the present embodiment, the air intake pipe 5 is integrally formed on the outer wall of the shell 1 and is formed in one step by an injection mold. Compared with the prior art, the mold design on the shell 1 is not changed much, which is beneficial to reduce the improvement cost. The buffer component 2 is detachably connected to the shell 1, mainly to avoid the buffer component 2 and the shell 1 being integrally formed, and the matching mold changes are relatively large, which will increase a lot of costs. Therefore, the buffer component 2 is separately set as a detachable component.

[0039] In an exemplary embodiment, a connecting portion 4 is provided on the buffer member 2 , and the buffer member 2 is detachably connected to the air intake pipe 5 via the connecting portion 4 , wherein the connecting portion 4 is used to guide the gas in the expansion cavity into the air intake pipe 5 .

[0040] In this embodiment, the connecting portion 4 is provided so that the gas in the expansion cavity can enter into the air intake pipe 5 through the connecting portion 4, playing a role of connection and transition. After the buffer component 2 is installed, the end of the connecting portion 4 enters into the air intake pipe 5 and automatically connects with the air intake pipe 5.

[0041] Illustratively, in this embodiment, the connecting portion 4 is an arc-shaped tube, one end of which is fixedly connected to the buffer 2 , and the other end of which can enter the air intake pipe 5 and be sealed and connected to the air intake pipe 5 .

[0042] Illustratively, in this embodiment, the connecting portion 4 is a bent tube, and the gas in the expansion cavity needs to pass through the bent channel of the bent tube to enter the air intake pipe 5, further reducing the impact force of the gas and thus reducing noise.

[0043] It is worth noting that, in this embodiment, the connection portion 4 is integrally formed on the buffer component 2 , and after the buffer component 2 is installed, the connection portion 4 is connected to the air intake pipe 5 .

[0044] It should also be noted that a positioning sleeve 6 is provided at the input end of the air intake pipe 5 for positioning the connecting portion 4. A sealing ring is provided inside the positioning sleeve 6. The positioning sleeve 6 can guide the connecting portion 4 when it is inserted into the air intake pipe 5. The sealing ring ensures that the connecting portion 4 is sealed and connected to the air intake pipe 5 to prevent gas leakage from the connection between the two. In this embodiment, the positioning sleeve 6 can also be provided on the connecting portion 4 to achieve positioning of the connecting portion 4 and the air intake pipe 5.

[0045] In an exemplary embodiment, the input port 3 and the input end of the connecting portion 4 are arranged in a staggered manner.

[0046] In this embodiment, the staggered arrangement of the input port 3 and the input end of the connection part 4 can prevent the pressurized gas from entering the expansion cavity from the input port 3 and directly entering the connection part 4, which is beneficial to reducing the impact force of the gas and thus reducing the noise ultimately generated by the gas.

[0047] Exemplarily, in this embodiment, the input port 3 is arranged on the left side of the front end surface of the buffer 2, and the connecting portion 4 is arranged on the right side of the rear end surface of the buffer 2 and communicates with the expansion cavity.

[0048] In an exemplary embodiment, a first connecting rib 13 and a second connecting rib 15 are fixedly connected to the buffer member 2 , the first connecting rib 13 is provided with a first connecting member 14 detachably connected to the shell 1 , and the second connecting rib 15 is provided with a second connecting member 16 connectable to the shell 1 .

[0049] In this embodiment, the buffer member 2 can be positioned and fixed by connecting the first connecting member 14 and the second connecting member 16 to the housing 1 .

[0050] Illustratively, in this embodiment, a third connecting member 17 detachably connectable to the housing 1 is provided in the expansion cavity.

[0051] It is worth noting that in order to strengthen the connection between the buffer member 2 and the housing 1 , the number of connecting members may be increased.

[0052] In an exemplary embodiment, the cover body 8 is detachably connected to the housing 1 , and a connecting structure is provided between the cover body 8 and the housing 1 , wherein the connecting structure includes a first connecting component and a second connecting component.

[0053] Exemplarily, the first connecting component includes a plurality of lock buckles 9 disposed on the shell 1 and a plurality of lock tongues 10 disposed on the cover 8. When the lock tongues 10 are inserted into corresponding lock buckles 9, the lock tongues 10 are engaged with the corresponding lock buckles 9 for preliminary fixation.

[0054] Exemplarily, the second connection assembly includes a plurality of fixing members 11 disposed on the cover body 8 and a plurality of fasteners 12 disposed on the housing 1 , and the fixing members 11 can be threadedly connected with the corresponding fasteners 12 for further fixation.

[0055] The utility model also provides an automobile, which comprises the above-mentioned automobile noise reduction air intake system.

[0056] In summary, the utility model can perform multiple redirections and buffers on the pressurized gas entering the shell 1 by means of the buffer member 2 and the intake pipe 5, thereby effectively reducing the impact force of the gas finally entering the shell 1, achieving the effect of reducing noise, and further improving the NVH performance of the vehicle.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An automobile noise reduction air intake system, characterized in that: include: A housing, wherein the housing is provided with an air inlet; An air inlet pipe is arranged outside the shell, and an outlet end of the air inlet pipe is communicated with the air inlet; The buffer is detachably connected to the shell, and the buffer comprises an expansion cavity and an input port connected to the expansion cavity, the inlet end of the air intake pipe is connected to the expansion cavity, wherein the input port is staggered with the inlet end of the air intake pipe.

2. The automobile noise reduction air intake system according to claim 1, characterized in that: The buffer member is provided with a connecting portion, and the buffer member is detachably connected to the air intake pipe via the connecting portion, wherein the connecting portion is used to guide the gas in the expansion cavity into the air intake pipe.

3. The automobile noise reduction air intake system according to claim 2, characterized in that: The connecting portion is an arc-shaped tube, one end of which is fixedly connected to the buffer component, and the other end of which can enter the air intake pipe and be sealed and connected to the air intake pipe.

4. The automobile noise reduction air intake system according to claim 2, characterized in that: A positioning sleeve is provided at the input end of the air intake pipe for positioning the connecting portion, and a sealing ring is provided inside the positioning sleeve.

5. The automobile noise reduction air intake system according to any one of claims 2 to 4, characterized in that: The input port and the input end of the connecting portion are arranged in a staggered manner.

6. The automobile noise reduction air intake system according to claim 1, characterized in that: The buffer member is fixedly connected with a first connecting rib and a second connecting rib. The first connecting rib is provided with a first connecting member that can be detachably connected to the shell, and the second connecting rib is provided with a second connecting member that can be connected to the shell.

7. The automobile noise reduction air intake system according to claim 6, characterized in that: A third connecting piece that can be detachably connected to the shell is provided in the expansion cavity.

8. The automobile noise reduction air intake system according to claim 1, characterized in that: It also includes a cover body, which is detachably connected to the shell. A connecting structure is provided between the cover body and the shell, and the connecting structure includes a first connecting component and a second connecting component.

9. The automobile noise reduction air intake system according to claim 8, characterized in that: The first connecting component includes a plurality of lock catches arranged on the shell and a plurality of lock tongues arranged on the cover body, and the lock tongues can be snap-connected with the corresponding lock catches. The second connecting component includes a plurality of fixing parts arranged on the cover body and a plurality of fasteners arranged on the shell, and the fixing parts can be threadedly connected with the corresponding fasteners.

10. An automobile, characterized in that: It comprises the automobile noise reduction air intake system as described in any one of claims 1-9.