CN114056053B - Automobile silencing noise-reducing exhaust system and automobile - Google Patents
Automobile silencing noise-reducing exhaust system and automobile Download PDFInfo
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- CN114056053B CN114056053B CN202010768532.5A CN202010768532A CN114056053B CN 114056053 B CN114056053 B CN 114056053B CN 202010768532 A CN202010768532 A CN 202010768532A CN 114056053 B CN114056053 B CN 114056053B
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Abstract
The invention provides an automobile silencing noise-reducing exhaust system, which belongs to the technical field of vehicles and comprises a shell arranged between a side wall outer plate and a C column reinforcing plate, wherein a first opening part used for communicating an automobile inner chamber is arranged at the upper part of the shell, a second opening part used for communicating an air curtain of an air outlet is arranged at the lower part of the shell, a sound absorbing assembly is arranged on the inner wall of the shell, and a damping partition plate is arranged in the inner cavity of the shell. The invention also provides an automobile using the automobile silencing noise-reducing exhaust system. According to the automobile silencing noise-reducing exhaust system provided by the invention, the gas in the automobile inner chamber reaches the second opening part through the first opening part and passes through the inner cavity of the shell and is exhausted through the air curtain; similarly, the outdoor noise reaches the first opening part through the second opening part and the inner cavity of the shell, and enters the vehicle inner chamber, and in the noise transmission process, the noise is blocked through the damping partition plate and the inner wall of the shell, so that secondary attenuation is formed in the inner cavity of the shell, and the noise is absorbed by the sound absorption component, so that the noise is reduced to the greatest extent, and the comfort level of the vehicle inner chamber is improved.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to an automobile silencing and noise-reducing exhaust system and an automobile using the same.
Background
At present, automobiles are popular and developed, the automobiles are not purely a travel tool for daily travel, and are an indispensable part of life, and requirements of people on automobile driving and riding comfort are higher and higher.
The ventilation exhaust ports of the existing vehicle type are conventionally arranged on the back coaming assembly so as to balance the air pressure inside and outside the vehicle. However, the structure has the defects that when the vehicle door is opened and closed, the vehicle is accelerated rapidly and runs at a high speed, the pressure difference between the inside and the outside of the vehicle is changed and fluctuates too much, and under the action of huge cavity air flow, the noise generated by the opening and closing of the air curtain structure of the air outlet is transmitted into the vehicle together with the running wind noise, the tire noise and the hub noise of the vehicle, so that the voice definition and the sound pressure level of the whole vehicle are greatly influenced, and the comfort is poor.
Disclosure of Invention
The invention aims to provide a silencing noise-reducing exhaust system of an automobile, which aims to solve the problems that noise generated by opening and closing an air curtain of an air outlet, as well as automobile running wind noise, tire noise and hub noise are transmitted into the automobile, so that the voice definition and the sound pressure level of the whole automobile are greatly influenced, and the comfort is poor.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an automobile noise reduction exhaust system, including being used for installing the casing between side wall planking and C post reinforcing plate, the upper portion of casing is equipped with the first oral area that is used for the intercommunication car inner chamber, the lower part of casing is equipped with the second oral area that is used for the intercommunication air exit air curtain, be equipped with on the inner wall of casing and inhale the sound subassembly, the casing inner chamber is equipped with the damping baffle that is used for blockking and change noise transmission route.
As another embodiment of the present application, the first opening is located at an upper portion of the side wall of the housing, and the second opening is located at a lower portion of the adjacent side wall of the housing.
As another embodiment of the present application, the damping baffle is horizontally installed on an inner side wall of the inner cavity of the housing, which is close to the first opening, and the damping baffle and an inner side wall of the housing, which is far away from the first opening, form an exhaust channel.
As another embodiment of the present application, the housing includes a noise reduction cavity upper body and a noise reduction cavity lower body, the noise reduction cavity upper body and the noise reduction cavity lower body are detachably connected, the first opening is disposed on the noise reduction cavity upper body, the second opening is disposed on the noise reduction cavity lower body, the sound absorbing component is disposed on side walls of the noise reduction cavity upper body and the noise reduction cavity lower body, and the damping partition board is disposed between the noise reduction cavity upper body and the noise reduction cavity lower body.
As another embodiment of the application, the upper body of the noise reduction cavity and the lower body of the noise reduction cavity are detachably connected through bolts.
As another embodiment of the present application, a check valve is provided at the bottom of the housing.
As another embodiment of the present application, the sound absorbing component is sound absorbing cotton.
As another embodiment of the present application, the housing is an injection molded part.
As another embodiment of the present application, the housing is a sheet metal part.
The automobile silencing noise reduction exhaust system provided by the invention has the beneficial effects that: compared with the prior art, the automobile silencing noise reduction exhaust system has the advantages that the shell is arranged between the side wall outer plate and the C column reinforcing plate, is communicated with the automobile inner chamber through the first opening part, is communicated with the air curtain through the second opening part, is provided with the sound absorption component, and is provided with the damping partition plate. When the vehicle door is opened and closed, rapid acceleration and high-speed running are carried out, gas in the vehicle inner chamber reaches the second opening part through the inner cavity of the shell through the first opening part and is discharged through the air curtain; similarly, the outdoor noise reaches the first opening part through the second opening part and the inner cavity of the shell, and enters the vehicle inner chamber, and in the noise transmission process, the noise is blocked through the damping partition plate and the inner wall of the shell, so that secondary attenuation is formed in the inner cavity of the shell, and the noise is absorbed by the sound absorption component, so that the noise is reduced to the greatest extent, and the comfort level of the vehicle inner chamber is improved.
The invention also provides an automobile, which comprises the automobile silencing noise-reducing exhaust system.
The automobile provided by the invention has the beneficial effects that: compared with the prior art, the automobile has the same beneficial effects as the noise reduction and noise reduction exhaust system because the noise reduction and noise reduction exhaust system is used, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of an automotive muffler, noise reduction and exhaust system according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a housing of an automobile noise reduction exhaust system according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sound absorbing assembly and a damping partition of an automobile noise reduction exhaust system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an exhaust flow of an automobile noise reduction exhaust system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating noise transfer of an exhaust system for silencing and reducing noise of an automobile according to an embodiment of the present invention;
Fig. 6 is a schematic structural diagram of a noise reduction cavity upper body of an automobile noise reduction exhaust system according to an embodiment of the present invention;
Fig. 7 is a schematic structural diagram of a noise reduction cavity lower body of an automobile noise reduction and exhaust system according to an embodiment of the present invention.
In the figure: 1. a housing; 110. a noise reduction cavity upper body; 120. a noise reduction cavity lower body; 101. a first mouth; 102. a second mouth; 2. sound absorbing cotton; 3. damping baffle; 4. an exhaust passage; 5. a one-way valve; 6. a wind curtain; 7. a side wall outer plate; 8. a C column reinforcing plate; 9. and a rear wall connecting plate.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, an automobile noise reduction exhaust system provided by the invention will now be described. The automobile silencing noise-reducing exhaust system comprises a shell 1 arranged between a side wall outer plate 7 and a C column reinforcing plate 8, wherein a first opening part 101 used for communicating an automobile inner chamber is arranged on the upper portion of the shell 1, a second opening part 102 used for communicating an exhaust outlet air curtain is arranged on the lower portion of the shell 1, a sound absorbing assembly is arranged on the inner wall of the shell 1, and a damping partition plate 3 used for blocking and changing a noise transmission path is arranged in the inner chamber of the shell 1.
Compared with the prior art, the automobile silencing noise reduction exhaust system provided by the invention has the advantages that the shell 1 is arranged between the side wall outer plate 7 and the C column reinforcing plate 8, is communicated with the automobile inner chamber through the first opening part 101 and is communicated with the air curtain 6 through the second opening part 102, the sound absorption component is arranged on the inner wall of the shell 1, and the damping partition plate 3 is arranged in the inner cavity of the shell 1. When the vehicle door is opened and closed, rapid acceleration and high-speed running are carried out, the gas in the vehicle inner chamber reaches the second opening 102 through the inner cavity of the shell 1 through the first opening 101 and is discharged through the air curtain 6; similarly, the outdoor noise reaches the first port 101 through the inner cavity of the shell 1 via the second port 102, and enters the vehicle interior, and in the noise transmission process, the noise is blocked by the damping partition plate 3 and the inner wall of the shell 1, so that secondary attenuation is formed in the inner cavity of the shell 1, and meanwhile, the noise is absorbed by the sound absorbing assembly, and finally enters the vehicle interior from the first port 101, so that the noise is reduced to the greatest extent, and the comfort level of the vehicle interior is improved.
Wherein, the side wall planking 7 forms the cavity structure that is used for installing casing 1, and casing 1 passes through C post reinforcing plate 8 and installs in this cavity structure to through the whole body coupling of back wall connecting plate 9 with the automobile body. The side wall outer plate 7 and the C column reinforcing plate 8 are respectively provided with openings correspondingly, and are respectively matched with the first opening part 101 and the second opening part 102. The shell 1 can replace an upper rubber clamping plate and a lower rubber clamping plate in a metal plate cavity while taking the functions of exhausting and reducing noise into consideration, so that a sequence of stations can be saved, and meanwhile, the installation cost and the part manufacturing cost are saved.
As a specific embodiment of the noise reduction exhaust system for an automobile provided by the invention, referring to fig. 2, the first port 101 is located at an upper portion of a side wall of the housing 1, and the second port 102 is located at a lower portion of an adjacent side wall of the housing 1. In this embodiment, the first opening 101 and the second opening 102 are opened in a manner that facilitates the connection between the vehicle interior and the air curtain 6. Meanwhile, since the first opening 101 and the second opening 102 are arranged at an angle and have a gradient in the height direction, noise which enters the inner cavity of the shell 1 through the second opening 102 can collide with the inner wall of the shell 1 as much as possible, after the noise enters the inner cavity of the shell 1 through the second opening 102, the noise can collide with the inner wall of the shell 1 for many times, and the noise can be discharged from the first opening 101 after the transmission direction is changed, in the process, the noise can be greatly attenuated, and the noise reaching the inner cavity of a vehicle can be reduced as much as possible.
As a specific embodiment of the noise reduction exhaust system for an automobile provided by the invention, referring to fig. 4 to 5, the damping baffle 3 is horizontally installed on the inner side wall of the inner cavity of the housing 1 and close to the first port 101, and the damping baffle 3 and the inner side wall of the housing 1 far from the first port 101 form an exhaust channel 4. In this embodiment, the damping baffle 3 is horizontally installed in the inner cavity of the housing 1, three sides of the damping baffle 3 are adhered to three adjacent inner walls of the housing 1, and a gap is formed between the other side of the damping baffle 3 and the other inner wall of the housing 1, and the gap is the exhaust channel 4. The damping baffle 3 blocks at least 3/4 of the cross section of the inner cavity of the shell 1, and after noise enters the inner cavity of the shell 1, the noise can collide with the lower end face of the damping baffle 3 for multiple times in the noise transmission process to form multiple times of attenuation, so that the noise can be reduced to the greatest extent.
As a specific embodiment of the noise reduction and exhaust system for an automobile provided by the invention, referring to fig. 2,4 and 5, a housing 1 includes a noise reduction cavity upper body 110 and a noise reduction cavity lower body 120, the noise reduction cavity upper body 110 and the noise reduction cavity lower body 120 are detachably connected, a first opening 101 is arranged on the noise reduction cavity upper body 110, a second opening 102 is arranged on the noise reduction cavity lower body 120, a sound absorbing component is arranged on side walls of the noise reduction cavity upper body 110 and the noise reduction cavity lower body 120, and a damping baffle 3 is positioned between the noise reduction cavity upper body 110 and the noise reduction cavity lower body 120. In this embodiment, the housing 1 is of a split structure, and is composed of a noise-reducing cavity upper body 110 and a noise-reducing cavity lower body 120, the first opening 101 is disposed on the noise-reducing cavity upper body 110, the second opening 102 is disposed on the noise-reducing cavity lower body 120, the noise-reducing cavity upper body 110 and the noise-reducing cavity lower body 120 are detachably connected, and a sound insulation component and a damping partition plate 3 can be conveniently disposed in the housing 1. Similarly, the noise reduction cavity upper body 110 and the noise reduction cavity lower body 120 can be replaced independently, and maintenance costs can be reduced.
As a specific embodiment of the noise reduction exhaust system for an automobile provided by the present invention, referring to fig. 2, 6 and 7, the noise reduction cavity upper body 110 and the noise reduction cavity lower body 120 are detachably connected by bolts. In this embodiment, the lower end of the upper body 110 of the noise reduction cavity is of an opening structure, the periphery is provided with a flanging structure, and similarly, the upper end of the upper body 110 of the noise reduction cavity is of an opening structure, and the periphery is also provided with a flanging structure. The connecting holes are formed in a plurality of opposite positions of the two flanging structures. The two opening structures of the upper cavity 110 and the lower cavity 120 are buckled relatively, so that a plurality of connecting holes on the flanging structures of the upper cavity 110 and the lower cavity 120 are corresponding, and bolts penetrate through the corresponding connecting holes, so that the upper cavity 110 and the lower cavity 120 are connected together. Preferably, sealing washers may be provided at both open ends of the noise reduction chamber upper body 110 and the noise reduction chamber lower body 120, thereby enhancing sealability of both.
As a specific embodiment of the noise reduction exhaust system for an automobile provided by the invention, referring to fig. 2, a check valve 5 is disposed at the bottom of the housing 1. In this embodiment, the check valve 5 can outwards exhaust through the casing 1, but can not be through external air inlet to casing 1 in, can avoid debris to enter into casing 1 inner chamber through this check valve 5, can in time discharge the impurity and the dust in the casing 1 inner chamber simultaneously, play the dust removal effect.
As a specific embodiment of the noise reduction exhaust system for an automobile provided by the invention, referring to fig. 3 to 5, the sound absorbing component is a sound absorbing cotton 2. In this embodiment, the sound-absorbing cotton 2 is made of artificial inorganic fibers. Adopts natural ores such as quartz sand, limestone, dolomite and the like as main raw materials, and is matched with chemical raw materials such as sodium carbonate, borax and the like to be melted into glass. In a melting state, the fibers are blown by external force and are thrown into flocculent fine fibers, the fibers are in three-dimensional intersection and intertwined, a plurality of fine gaps are formed, and noise can be effectively absorbed. The sound-absorbing cotton 2 is adhered to the inner cavity of the shell 1 through adhesive. The arrangement of the sound absorbing cotton 2 in the noise reduction cavity upper body 110 is three, and the sound absorbing cotton 2 is respectively adhered to the inner wall of the noise reduction cavity upper body 110 opposite to the first opening 101, the inner wall of the noise reduction cavity upper body 110 on the adjacent side of the first opening 101 and the top inner wall of the noise reduction cavity upper body 110, and is adhered to the inner wall of the noise reduction cavity upper body 110 on the adjacent side of the first opening 101, and is positioned on one side of the exhaust channel 4, so that the noise can be further absorbed when the noise passes through the exhaust channel 4. The sound absorbing cotton 2 is arranged in the noise reduction cavity upper body 110 in two blocks and is respectively adhered to the inner wall of the noise reduction cavity lower body 120 opposite to the second opening 102 and the bottom inner wall of the noise reduction cavity lower body 120. The air inlet direction of the air curtain 6 is obliquely arranged from top to bottom, noise enters the noise reduction cavity lower body 120 from the air curtain 6, the initial direction is obliquely downward, and the damping partition plate 3 is arranged in the inner cavity of the shell 1, so that the noise reduction cavity lower body 120 forms a semi-closed blocking system, and most of noise can be prevented from being directly transmitted upward from the lower part of the inner cavity of the shell 1. Firstly, the sound-absorbing cotton 2 on the inner wall of the bottom of the noise-reducing cavity lower body 120 is collided, then reflected to the sound-absorbing cotton 2 on the opposite side of the second opening 102, then reflected again after being reflected to the lower end face of the damping partition board 3, part of the sound-absorbing cotton is discharged through the air curtain 6, part of the sound-absorbing cotton is repeatedly subjected to the above process, after the noise-reducing cavity lower body 120 is collided with the damping partition board 3 for several times, the noise transmission route continuously moves to the exhaust channel 4, most of the noise is absorbed by the sound-absorbing cotton 2 until the residual noise enters the noise-reducing cavity upper body 110 through the exhaust channel 4, and the attenuated noise enters the vehicle inner chamber through the first opening 101 after the noise-reducing cavity upper body 110 is collided with the sound-absorbing cotton 2 respectively, so that the noise is mostly absorbed at the moment, and a good noise-reducing effect can be achieved.
As a specific implementation mode of the automobile silencing noise reduction exhaust system provided by the invention, the shell 1 is an injection molding piece. In this embodiment, the upper cavity 110 and the lower cavity 120 are made of the same material, and are injection molded parts, so that the self weight is reduced as much as possible on the premise of meeting the structural strength, and the requirement of light weight of the whole vehicle is met.
As a specific implementation mode of the automobile silencing noise reduction exhaust system provided by the invention, the shell 1 is a sheet metal part. In this embodiment, casing 1 adopts the sheet metal component, can increase the structural strength of casing 1, and casing 1 installs at side wall planking 7 and C post reinforcing plate 8, and the structural strength of side wall planking 7 and C post reinforcing plate 8 can further be improved to casing 1 of sheet metal material, can play the effect of reinforcement.
Referring to fig. 4 and 5, the flow direction of arrow a is used to describe the direction of exhaust, arrows b and c are the conduction directions of noise, and arrow d is the attenuation direction of noise.
The invention also provides an automobile, which comprises the automobile silencing noise reduction exhaust system.
Compared with the prior art, the automobile provided by the invention has the same beneficial effects as the noise reduction and exhaust system because the noise reduction and exhaust system is used, and the noise reduction and exhaust system is not described in detail herein.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The automobile silencing noise-reducing exhaust system is characterized by comprising a shell arranged between a side wall outer plate and a C column reinforcing plate, wherein a first opening part used for communicating an automobile inner chamber is arranged at the upper part of the shell, a second opening part used for communicating an exhaust outlet air curtain is arranged at the lower part of the shell, a sound absorption assembly is arranged on the inner wall of the shell, and a damping baffle plate used for blocking and changing a noise transmission path is arranged in the inner cavity of the shell;
The first opening part is positioned at the upper part of the side wall of the shell, and the second opening part is positioned at the lower part of the adjacent side wall of the shell;
The damping partition plate is horizontally arranged on the inner side wall of the inner cavity of the shell, which is close to the first opening, and the damping partition plate and the inner side wall of the shell, which is far away from the first opening, form an exhaust channel;
the damping baffle plate at least seals 3/4 of the cross section of the inner cavity of the shell;
The air inlet direction of the air curtain is obliquely arranged from top to bottom.
2. The automotive noise-reducing and noise-reducing exhaust system of claim 1, wherein the housing comprises a noise-reducing cavity upper body and a noise-reducing cavity lower body, the noise-reducing cavity upper body and the noise-reducing cavity lower body are detachably connected, the first opening is arranged on the noise-reducing cavity upper body, the second opening is arranged on the noise-reducing cavity lower body, the sound-absorbing assembly is arranged on the noise-reducing cavity upper body and the side wall of the noise-reducing cavity lower body, and the damping partition plate is arranged between the noise-reducing cavity upper body and the noise-reducing cavity lower body.
3. The automotive noise-reducing and noise-reducing exhaust system according to claim 2, wherein the noise-reducing chamber upper body and the noise-reducing chamber lower body are detachably connected by bolts.
4. The vehicle noise reduction exhaust system according to claim 1, wherein the bottom of the housing is provided with a check valve.
5. The automotive sound attenuating and noise reducing exhaust system of claim 1, wherein the sound absorbing assembly is a sound absorbing cotton.
6. The automotive noise-reducing exhaust system according to any one of claims 1 to 5, wherein the housing is an injection-molded part.
7. The automotive noise-reducing exhaust system according to any one of claims 1 to 5, wherein the housing is a sheet metal member.
8. An automobile comprising the automobile sound-deadening noise-reducing exhaust system according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768532.5A CN114056053B (en) | 2020-08-03 | Automobile silencing noise-reducing exhaust system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010768532.5A CN114056053B (en) | 2020-08-03 | Automobile silencing noise-reducing exhaust system and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114056053A CN114056053A (en) | 2022-02-18 |
| CN114056053B true CN114056053B (en) | 2024-06-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369794A (en) * | 2016-10-26 | 2017-02-01 | 仓敏伟 | Rotary plate type automatic internal ventilation and external ventilation switching device |
| CN206664483U (en) * | 2017-03-08 | 2017-11-24 | 上汽大众汽车有限公司 | A kind of automobile forces air outlet acoustic hood |
| CN208253861U (en) * | 2018-05-28 | 2018-12-18 | 广州舜领教育咨询有限公司 | A kind of sound insulation and noise reduction ventilator |
| CN210832482U (en) * | 2019-09-18 | 2020-06-23 | 马鞍山汉德绿色建筑环境科技有限公司 | New fan housing of noise reduction |
| CN210852349U (en) * | 2019-08-26 | 2020-06-26 | 北京汽车股份有限公司 | Ventilation grille and vehicle |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369794A (en) * | 2016-10-26 | 2017-02-01 | 仓敏伟 | Rotary plate type automatic internal ventilation and external ventilation switching device |
| CN206664483U (en) * | 2017-03-08 | 2017-11-24 | 上汽大众汽车有限公司 | A kind of automobile forces air outlet acoustic hood |
| CN208253861U (en) * | 2018-05-28 | 2018-12-18 | 广州舜领教育咨询有限公司 | A kind of sound insulation and noise reduction ventilator |
| CN210852349U (en) * | 2019-08-26 | 2020-06-26 | 北京汽车股份有限公司 | Ventilation grille and vehicle |
| CN210832482U (en) * | 2019-09-18 | 2020-06-23 | 马鞍山汉德绿色建筑环境科技有限公司 | New fan housing of noise reduction |
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