Exhaust muffling structure and vehicle

Abstract

The application relates to the technical field of vehicle chassis, and provides an exhaust silencing structure and a vehicle. The exhaust silencing structure is arranged in the vehicle and comprises a silencer connected with an air inlet pipeline and an exhaust tail pipe; wherein the silencer comprises a shell forming a silencing cavity inside, and part of the shell is formed by a vehicle body floor in the vehicle. The application can realize integrated design of the silencer and the vehicle body floor, improve the material reuse rate of the vehicle body, eliminate redundant quality, and help to realize lightweight design of the whole vehicle, so as to facilitate improvement of the quality of the whole vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and in particular to an exhaust muffler structure and vehicle. Background Technology

[0002] In related technologies, vehicle exhaust mufflers are generally mounted in the vehicle via suspension brackets, and noise reduction is mainly achieved through sound wave reflection, sound wave interference, and the consumption of sound-absorbing materials. However, mufflers typically have a separate housing structure, resulting in a relatively large weight and hindering the overall vehicle lightweight design. Utility Model Content

[0003] In view of this, this application aims to propose an exhaust muffler structure that facilitates the lightweight design of the entire vehicle.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows: An exhaust muffler structure, installed in a vehicle, includes a muffler connected to an intake manifold and an exhaust tailpipe; The muffler includes an outer shell that forms an internal muffler cavity. The intake pipe and the exhaust tailpipe are both connected to the muffler cavity, and a portion of the outer shell is formed by the vehicle body floor.

[0005] Furthermore, the outer casing includes an upper casing and a lower casing that are fastened together; the upper casing and the lower casing enclose the sound-absorbing cavity, and the upper casing is formed by the vehicle floor.

[0006] Furthermore, a sealing gasket is provided between the upper housing and the lower housing; and / or, the upper housing and the lower housing are connected together by a screwed structure.

[0007] Furthermore, the silencing cavity is provided with multiple partitions arranged at intervals, which divide the silencing cavity into multiple sub-cavities; each sub-cavity is connected to the others, and the air intake pipe and the exhaust tailpipe are respectively connected to different sub-cavities.

[0008] Furthermore, the plurality of partitions include a first partition, a second partition, and a third partition; the plurality of sub-cavities include a first sub-cavity located on one side of the first partition, a second sub-cavity located between the first partition and the second partition, a third sub-cavity located between the second partition and the third partition, and a fourth sub-cavity located on one side of the third partition; the intake pipe is connected to the second sub-cavity, and the exhaust tailpipe is connected to the fourth sub-cavity through an inner core tube that passes through each of the sub-cavities in sequence.

[0009] Furthermore, the first sub-cavity and the second sub-cavity are connected through through holes in the first partition, the through holes being adapted to reduce the exhaust back pressure in the muffler; and / or, the second sub-cavity and the third sub-cavity are connected through a plurality of first micro-holes in the second partition, and the third sub-cavity and the fourth sub-cavity are connected through a plurality of second micro-holes in the third partition.

[0010] Furthermore, the third sub-cavity is filled with sound-absorbing cotton; and / or, a connecting pipe is provided between the second partition and the third partition, the connecting pipe connecting the second sub-cavity and the fourth sub-cavity, and the connecting pipe and the inner core tube are provided with a plurality of third micro-holes communicating with the third sub-cavity.

[0011] Furthermore, one end of the intake pipe extends into the second sub-cavity, and the second sub-cavity is provided with a reinforcing plate connecting the first partition and the second partition; the end of the intake pipe extending into the second sub-cavity is fixed to the reinforcing plate.

[0012] Furthermore, the air intake pipeline includes a first air intake pipe, a corrugated pipe, and a second air intake pipe connected in sequence; the first air intake pipe is provided with an air intake flange at its opening and a mounting hook is provided on the first air intake pipe; the second air intake pipe is connected to the silencer cavity.

[0013] Compared with related technologies, this application has the following advantages: (1) The exhaust muffler structure described in this application can achieve the integrated design of the muffler and the vehicle floor by making part of the muffler housing composed of the vehicle floor, which can improve the material reuse rate of the vehicle body and eliminate redundant mass, thereby helping to achieve the lightweight design of the whole vehicle.

[0014] (2) The muffler housing consists of upper and lower shells that are snapped together, which is simple in structure, facilitates the design and fabrication of the muffler housing, and also facilitates the reuse of the vehicle floor.

[0015] (3) A sealing gasket is set between the upper and lower shells to ensure the sealing of the silencer cavity, which helps to ensure the quality of the silencer. The upper and lower shells are connected by a screw connection, which facilitates the connection between the upper and lower shells. In addition, it can ensure the reliability of the connection between the shells and also helps to maintain and repair the silencer later.

[0016] (4) By setting a partition in the muffler cavity, the muffler cavity is divided into multiple interconnected sub-cavities, and the intake pipe and exhaust tailpipe are connected to different sub-cavities, which can improve the muffler's noise reduction capacity and enhance the muffler's performance.

[0017] (5) The partition includes the first to third partitions and correspondingly divides the first to fourth sub-cavities. On the basis of providing a feasible partition setting method, it is also convenient to facilitate the functional design of different sub-cavities in the silencer so that the silencer has a better noise reduction effect.

[0018] (6) The first partition is provided with through holes, which not only enables the first sub-cavity and the second sub-cavity to connect, but also helps to reduce the exhaust back pressure in the muffler and improve the muffler's performance. The second partition and the third partition are provided with multiple micro holes, which not only enable the adjacent sub-cavities to connect, but also enable the absorption of exhaust noise energy, which helps to improve the muffler's noise reduction capability.

[0019] (7) Filling the third cavity with sound-absorbing cotton can make the third cavity a high-frequency resonant cavity while the other cavities are used as expansion cavities. This enables the muffler to absorb noise at different frequencies, which is beneficial to ensuring the muffler's noise reduction effect. By setting a connecting pipe and connecting the connecting pipe and the inner core tube to the third cavity through the third micro-hole, the absorption and processing capability of high-frequency noise can be improved.

[0020] (8) By setting the reinforcing plate in the second compartment, the connection strength between the intake pipe and the muffler can be increased, which helps to improve the overall durability of the exhaust muffler structure.

[0021] (9) The intake pipe includes an intake pipe and a bellows connected in sequence. The extensibility of the bellows can be used to achieve a decoupling design between the muffler and the vehicle body, which can reduce the vibration transmission between the vehicle body and the muffler and help improve the durability of the muffler.

[0022] Another object of this application is to provide a vehicle having an exhaust muffler structure as described above.

[0023] The vehicle described in this application is equipped with the aforementioned exhaust muffler structure, which can improve the reuse rate of body materials and eliminate redundant mass while ensuring the muffler function, thereby helping to achieve lightweight design of the whole vehicle. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the exhaust muffler structure described in the embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the structure shown in the image from another perspective; Figure 3This is a schematic diagram of the internal structure of the exhaust muffler structure described in the embodiments of this application; Figure 4 for Figure 3 A schematic diagram of the structure shown in the image from another perspective; Figure 5 This is a schematic diagram of the connecting pipe described in an embodiment of this application; Figure 6 This is a schematic diagram of the reinforcing plate described in an embodiment of this application; Explanation of reference numerals in the attached figures: 100. Muffler; 101. Lower shell; 102. Upper shell; 103. Silencing cavity; 1031. First sub-cavity; 1032. Second sub-cavity; 1033. Third sub-cavity; 1034. Fourth sub-cavity; 105. Partition; 105a. First partition; 105b. Second partition; 105c. Third partition; 1051. Through hole; 1052. First micropore; 1053. Second micropore; 106. Inner core tube; 1061. First inner core tube; 1062. Second inner core tube; 1063. Third inner core tube; 107. Connecting pipe; 108. Reinforcing plate; 1081. Through hole; 1082. Reinforcing rib; 200. Intake pipe; 201. First intake pipe; 2011. Intake flange; 2012. Lifting hook; 2013. Lifting hook mounting base; 202. Bellows; 203. Second intake pipe; 300, exhaust tailpipe; 400, projection weld bolt; 500, nut. Detailed Implementation

[0025] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0027] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0029] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0031] An embodiment of the first aspect of this application provides an exhaust muffler structure installed in a vehicle, which can improve the material reuse rate of the vehicle body and help to achieve lightweight design of the whole vehicle.

[0032] In related technologies, vehicle exhaust mufflers are generally installed in the vehicle via suspension brackets, and noise reduction is mainly achieved through sound wave reflection, sound wave interference, and the consumption of sound-absorbing materials. However, the muffler 100 usually has a separate housing structure, which makes the muffler 100 relatively heavy and is not conducive to the lightweight design of the whole vehicle.

[0033] Secondly, due to its significant weight, the muffler 100 is mounted in the vehicle via a suspension bracket, which poses a risk of bracket breakage and negatively impacts the safety of its operation. Furthermore, the muffler 100's heavy weight can also lead to increased fuel consumption and delayed acceleration and braking response, thus hindering overall vehicle quality.

[0034] In view of this, in order to overcome the shortcomings of the related technology, the exhaust muffler structure of this embodiment combines... Figures 1 to 6 As shown, the overall design includes a muffler 100 connected to the intake pipe 200 and the exhaust tailpipe 300. The muffler 100 includes a housing that forms an internal muffler cavity 103. The intake pipe 200 and the exhaust tailpipe 300 are both connected to the muffler cavity 103, and part of the housing is formed by the vehicle's body floor.

[0035] Therefore, by making part of the muffler 100 housing consist of the vehicle's floor, the muffler 100 and the vehicle floor can be integrated into a single design. This improves the material reuse rate of the vehicle body, eliminates redundant weight, and helps achieve lightweight design of the entire vehicle. At the same time, compared with the traditional solution where the muffler 100 is mounted on the vehicle via a suspension bracket, the risk of suspension bracket breakage can be avoided. Moreover, in addition to achieving lightweight design of the entire vehicle, it also helps to solve problems such as increased fuel consumption and delayed acceleration and braking response, thereby improving the overall quality of the vehicle.

[0036] Based on the above overview, specifically, to eliminate vehicle noise, a muffler structure is generally installed on the vehicle to reduce the noise generated by exhaust emissions. Muffler structures are divided into resistive muffler structures and reactive muffler structures. Resistive muffler structures reduce noise by placing sound-absorbing materials inside the muffler structure. When sound waves enter the resistive muffler structure, they cause the air and fine fibers in the pores of the sound-absorbing material to vibrate. Due to friction and viscous resistance, the sound energy is converted into heat energy and absorbed, thus achieving a noise reduction effect. Reactive muffler structures utilize resonant cavities and expansion chambers for noise reduction. Sound waves, during propagation, reduce sound energy through abrupt interfaces, impedance changes, reflection, and refraction, thereby achieving a noise reduction effect.

[0037] The exhaust muffler structure of this embodiment includes the aforementioned resistive muffler structure and reactive muffler structure, mainly used for noise reduction of high, medium, and low noise levels in vehicle exhaust. Furthermore, any structural parts not mentioned in this embodiment can be referred to from the various structures in exhaust systems well-known to those skilled in the art, and will not be described in detail here.

[0038] It should be mentioned that, taking the vehicle in which the exhaust muffler structure described in this application is located as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vehicle's vertical direction (also known as the height direction or the vehicle's Z-direction), horizontal direction (also known as the width direction or the vehicle's Y-direction), and front-back direction (also known as the length direction or the vehicle's X-direction).

[0039] Continue to combine Figures 1 to 4 As shown, in some of the exemplary embodiments, the housing includes an upper housing 102 and a lower housing 101 that are snapped together, the upper housing 102 and the lower housing 101 enclosing a sound-absorbing cavity 103, and the upper housing 102 is formed by the vehicle floor.

[0040] It is understandable that the muffler 100 housing includes upper and lower housings 101 that are snapped together, which is simple in structure, facilitates the design and fabrication of the muffler 100 housing, and also facilitates the reuse of the vehicle floor.

[0041] Here, the upper housing 102 and the lower housing 101 specifically refer to the lower housing 101 being located below the upper housing 102 along the overall vehicle height direction. Moreover, in this embodiment, the upper housing 102 is formed by the vehicle floor, that is, the upper housing 102 is integrated with the vehicle floor design, while the lower housing 101 is arranged below the upper housing 102. The advantage of this arrangement is that it facilitates a reasonable overall vehicle layout.

[0042] Of course, in addition to integrating the upper housing 102 with the vehicle floor, this embodiment can also, if necessary, make the lower housing 101 from the vehicle floor to achieve the integrated design of the lower housing 101 and the vehicle floor, which can also achieve the effect of lightweight design. However, it should be noted that the placement of the muffler 100 should not affect the placement and installation of other components on the vehicle.

[0043] Furthermore, in some exemplary embodiments, a sealing gasket is provided between the upper housing 102 and the lower housing 101. This arrangement ensures the sealing of the silencing cavity 103, which helps to guarantee the performance of the muffler 100.

[0044] Meanwhile, in some exemplary embodiments, the upper housing 102 and the lower housing 101 are connected together by a screwed structure. This screwed connection facilitates the connection between the upper and lower housings 101, ensures reliable connection between the housings, and also aids in the later maintenance and repair of the muffler 100.

[0045] At this point, continue combining Figures 1 to 4 As shown, in some exemplary embodiments, the upper housing 102 is provided with a first connecting flange that surrounds the upper housing 102 in a circumferential manner. Of course, the first connecting flange is also formed by the vehicle floor. Meanwhile, the lower housing 101 is provided with a second connecting flange that surrounds the lower housing 101 in a circumferential manner. The upper housing 102 and the lower housing 101 are specifically connected by the first connecting flange and the second connecting flange. The sealing gasket is preferably disposed between the first connecting flange and the second flange.

[0046] In specific implementation, the first connecting flange and the second connecting flange are connected by a screw connection structure. In some exemplary embodiments, the screw connection structure includes a plurality of screw connection components arranged circumferentially around the outer shell. Each screw connection component includes a projection weld bolt 400 provided on the first connecting flange of the upper shell 102 and a nut 500 screwed together with the projection weld bolt 400 by one side of the second connecting flange of the lower shell 101, thereby forming the connection between the first connecting flange and the second connecting flange.

[0047] The use of projection welded bolts 400 facilitates the screwing operation of nuts 500, improves the connection convenience of the first connecting flange and the second connecting flange, and also improves the ease of disassembly and assembly of the upper housing 102 and the lower housing 101. Specifically, the nut 500 can be a hexagonal flange nut 500.

[0048] In addition, continue to combine Figures 1 to 4 As shown, in some exemplary embodiments, the silencing cavity 103 is provided with a plurality of partitions 105 arranged at intervals, which divide the silencing cavity 103 into a plurality of sub-cavities. At the same time, the sub-cavities are interconnected, and the intake pipe 200 and the exhaust tailpipe 300 are respectively connected to different sub-cavities.

[0049] By setting a partition 105 inside the muffler 103, the muffler 103 is divided into multiple interconnected sub-cavities, and the intake pipe 200 and exhaust tailpipe 300 are connected to different sub-cavities, which can improve the muffler 100's noise reduction capability and enhance the muffler 100's performance.

[0050] In specific implementation, we will continue to combine Figure 3 and Figure 4 As shown, in some exemplary embodiments, the plurality of partitions 105 include a first partition 105a, a second partition 105b, and a third partition 105c. Simultaneously, the plurality of sub-cavities include a first sub-cavity 1031 located on one side of the first partition 105a, a second sub-cavity 1032 located between the first partition 105a and the second partition 105b, a third sub-cavity 1033 located between the second partition 105b and the third partition 105c, and a fourth sub-cavity 1034 located on one side of the third partition 105c.

[0051] Furthermore, the intake pipe 200 is connected to the second sub-chamber 1032, and the exhaust tailpipe 300 is connected to the fourth sub-chamber 1034 via the inner core pipe 106 that passes through each sub-chamber in sequence. It is understood that by having the partition 105 include the first to third partitions 105c and correspondingly divide the first to fourth sub-chambers 1034, a feasible partition 105 arrangement is provided, which also facilitates the functional design of different sub-chambers within the muffler 100, thereby enabling the muffler 100 to achieve better noise reduction.

[0052] Continue to combine Figure 3 and Figure 4 As shown, in some exemplary embodiments, the first sub-cavity 1031 and the second sub-cavity 1032 are connected by a through hole 1051 on the first partition 105a, the through hole 1051 being adapted to reduce the exhaust back pressure within the muffler 100.

[0053] Here, by providing a through hole 1051 on the first partition 105a, it is possible to connect the first sub-cavity 1031 and the second sub-cavity 1032, while also helping to reduce the exhaust back pressure in the muffler 100, thereby improving the performance of the muffler 100.

[0054] Furthermore, continue to combine Figure 3 and Figure 4 As shown, in some exemplary embodiments, the second sub-cavity 1032 and the third sub-cavity 1033 are connected by a plurality of first micropores 1052 on the second partition 105b, and the third sub-cavity 1033 and the fourth sub-cavity 1034 are connected by a plurality of second micropores 1053 on the third partition 105c.

[0055] Understandably, the second partition 105b and the third partition 105c are provided with multiple micropores, which not only enable the connection between adjacent compartments, but also absorb exhaust noise energy, thus improving the noise reduction capability of the muffler 100.

[0056] It is worth mentioning that the micropores in this embodiment refer to pores with a diameter much smaller than the overall size of the structure, and are usually distributed in a "dispersed and dense" manner. For example, several small holes are drilled in a specific area of ​​the partition 105 in the muffler 100. The core function of the micropores is to achieve specific functions such as noise reduction, filtration, and permeation through the small pore size. In specific implementation, the diameter of the micropores can be between 1 and 3 mm.

[0057] Furthermore, the design of multiple micropores not only allows the second sub-cavity 1032, the third sub-cavity 1033, and the fourth sub-cavity 1034 to form a series resonant structure, enabling low-to-mid-frequency sound waves of a specific frequency to be reflected back and forth between the two cavities through the micropores, gradually dissipating energy, similar to "oscillation attenuation" of sound waves between the two cavities, but also slows down the flow rate of exhaust airflow from the second sub-cavity 1032 into the third sub-cavity 1033 and the fourth sub-cavity 1034. This allows some airflow to slowly permeate through each micropore in sequence, gradually reducing the airflow pressure and forming a multi-stage expansion silencing structure, thereby improving the low-to-mid-frequency noise reduction effect of the silencing cavity 103.

[0058] Secondly, the design with multiple micro-holes can also suppress sudden changes in inter-cavity pressure and reduce exhaust back pressure fluctuations, thus helping to improve the overall noise reduction capability of the muffler 100. Of course, the design with multiple micro-holes also has a certain weight-reduction effect, thereby contributing to the overall vehicle lightweighting.

[0059] In some exemplary embodiments, the third cavity 1033 is filled with sound-absorbing cotton. The main advantage of this arrangement is that, while the other cavities serve as expansion cavities, the third cavity 1033 can become a high-frequency resonant cavity, enabling the muffler 100 to absorb noise at different frequencies (high, medium, and low), thus ensuring the muffler 100's noise reduction effect.

[0060] Furthermore, continue to combine Figures 3 to 5 As shown, in some exemplary embodiments, a connecting pipe 107 is provided between the second partition 105b and the third partition 105c, the connecting pipe 107 connecting the second sub-cavity 1032 and the fourth sub-cavity 1034, and the connecting pipe 107 and the inner core tube 106 are provided with a plurality of third micropores communicating with the third sub-cavity 1033.

[0061] It can be understood that by setting up the connecting pipe 107, and ensuring that both the connecting pipe 107 and the inner core tube 106 are connected to the third sub-cavity 1033 through the third micro-hole, the absorption and processing capability of high-frequency noise can be improved. Specifically, the design of the third micro-hole allows the connecting pipe 107 and the third sub-cavity 1033, as well as the inner core tube 106 and the third sub-cavity 1033, to be connected, forming a cavity structure similar to a Helmholtz resonant cavity, thereby improving the noise reduction effect of the silencer 100.

[0062] Moreover, the portion of the exhaust airflow that enters the third sub-cavity 1033 through the third micro-holes on the connecting pipe 107, and the portion that enters the third sub-cavity 1033 through the third micro-holes on the inner core tube 106, can counteract and cancel each other out, which is also a way to achieve noise reduction.

[0063] In this embodiment, in some exemplary implementations, it is still combined with Figures 3 to 4 As shown, the inner core tube 106 in this embodiment includes a first inner core tube 1061 connected to the exhaust tailpipe 300, a second inner core tube 1062 connected to the first inner core tube 1061 and located in the first sub-cavity 1031, and a third inner core tube 1063 connected to the second inner core tube 1062 and communicating with the fourth sub-cavity 1034.

[0064] The first inner core tube 1061 passes sequentially through the fourth sub-cavity 1034, the third sub-cavity 1033, and the second sub-cavity 1032 from the exhaust tailpipe 300. To connect the first inner core tube 1061 and the third inner core tube 1063, the second inner core tube 1062 is preferably bent. The third inner core tube 1063 passes through the second sub-cavity 1032 and the third sub-cavity 1033, and multiple third micro-holes on the inner core tube 1061 are disposed on the portion of the third inner core tube 1063 located in the third sub-cavity 1033.

[0065] Specifically, in this embodiment, the exhaust airflow can enter the second sub-chamber 1032 through the intake pipe 200, a portion of the exhaust airflow can enter the first sub-chamber 1031 through the through hole 1051 of the first partition 105a, and a portion of the exhaust airflow can enter the fourth sub-chamber 1034 through the connecting pipe 107. Then, it sequentially passes through the third inner core tube 1063, the bent second inner core tube 1062, and the first inner core tube 1061 into the exhaust tailpipe 300, and finally exits into the external environment through the exhaust tailpipe 300. The advantage of this arrangement is that it can extend the exhaust airflow path, reduce the exhaust airflow velocity, reduce the source of "turbulent noise," and reduce exhaust back pressure fluctuations while minimizing the space occupied by the muffler 100, thereby reducing power loss and improving the overall vehicle quality.

[0066] In addition, continue to combine Figures 1 to 6 As shown, in some exemplary embodiments, one end of the intake pipe 200 extends into the second sub-cavity 1032, and the second sub-cavity 1032 is provided with a reinforcing plate 108 connecting the first partition 105a and the second partition 105b, and one end of the intake pipe 200 extending into the second sub-cavity 1032 is fixed to the reinforcing plate 108.

[0067] Here, by setting the reinforcing plate 108 inside the second sub-cavity 1032, the connection strength between the intake pipe 200 and the muffler 100 can be increased, the structural stability can be improved, and the overall durability of the exhaust muffler structure can be improved.

[0068] In addition, continue to combine Figures 1 to 6 As shown, in some exemplary embodiments, the intake pipe 200 includes a first intake pipe 201, a bellows pipe 202, and a second intake pipe 203 connected in sequence. Furthermore, the first intake pipe 201 has an intake flange 2011 at its opening and a mounting hook 2012 on it. The second intake pipe 203 communicates with the silencer cavity 103.

[0069] Understandably, the intake pipe 200 includes an intake pipe and a bellows 202 connected in sequence. The expandable characteristics of the bellows 202 can be used to achieve a decoupling design between the muffler 100 and the vehicle body, which can reduce the vibration transmission between the vehicle body and the muffler 100 and help improve the durability of the muffler 100.

[0070] In specific implementations, in some exemplary embodiments, the cross-section of the reinforcing plate 108 in this embodiment can be set to be "U" shaped in overall visual appearance, so that it has good structural strength. At the same time, the reinforcing plate 108 is preferably provided for the second air intake pipe 203 to pass through and be installed. If necessary, in order to improve the connection strength between the second air intake pipe 203 and the reinforcing plate 108, an outward flange can be provided at the through hole 1081 of the reinforcing plate 108, and the outward flange can be connected to the second air intake pipe 203. This can increase the connection area and improve the connection reliability.

[0071] Furthermore, to ensure the structural strength of the reinforcing plate 108, in this embodiment, a reinforcing structure can also be provided on the reinforcing plate 108. For example, a reinforcing rib 1082 can be arranged on one side of the through hole 1081. The number and arrangement of the reinforcing rib 1082 can be set and adjusted according to the actual structural strength requirements of the reinforcing plate 108. For example, the reinforcing rib 1082 can be two or three arranged on one side of the through hole 1081, and each reinforcing rib 1082 can be formed by the reinforcing plate 108 protruding or concave to one side in the thickness direction.

[0072] Meanwhile, to ensure the reliable connection between the mounting hook 2012 and the first air intake pipe 201, in some exemplary embodiments, the first air intake pipe 201 of this embodiment is provided with a hook mounting seat 2013 for mounting the mounting hook 2012. Specifically, the hook mounting seat 2013 may include two support plates arranged circumferentially spaced along the first air intake pipe 201, and a mounting plate disposed on the side of the two support plates near the bellows 202. The two support plates extend along the length direction of the first air intake pipe 201, and the mounting plate is provided with a groove for connecting with the mounting hook 2012 to ensure the reliable connection between the mounting plate and the mounting hook 2012.

[0073] In this embodiment, the first sub-cavity 1031, the second sub-cavity 1032, and the fourth sub-cavity 1034 are preferably configured as expansion cavities, mainly used to eliminate low- and mid-frequency noise. The third sub-cavity 1033 is preferably configured as a high-frequency resonant cavity, which is filled with sound-absorbing cotton and is mainly used to eliminate high-frequency noise.

[0074] In this embodiment, the exhaust airflow enters the second sub-chamber 1032 through the second intake pipe 203. Part of the exhaust airflow enters the first sub-chamber 1031 through the through hole 1051 of the first partition 105a, and part of the exhaust airflow enters the fourth sub-chamber 1034 through the connecting pipe 107. Then, it enters the exhaust tailpipe 300 through the inner core pipe 106 and is finally discharged into the external environment through the exhaust tailpipe 300.

[0075] The coordinated arrangement of the through hole 1051, each of the first micro-holes 1052, each of the second micro-holes 1053, and each of the third micro-holes not only allows the exhaust airflow to flow between the first sub-cavity 1031, the second sub-cavity 1032, the third sub-cavity 1033, and the fourth sub-cavity 1034, and finally discharges through the inner core tube 106 and the exhaust tailpipe 300, but also achieves a good noise reduction effect in conjunction with each sub-cavity.

[0076] It is worth noting that, regarding the exhaust muffler structure of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 6 As shown, it may include, for example, a muffler 100 disposed in the vehicle and connected to the intake manifold 200 and the exhaust tailpipe 300.

[0077] The muffler 100 includes an outer shell that forms a muffler cavity 103 inside. The intake pipe 200 and the exhaust tailpipe 300 are both connected to the muffler cavity 103, and part of the outer shell is formed by the vehicle body floor.

[0078] The outer shell includes an upper shell 102 and a lower shell 101 that are fastened together; the upper shell 102 and the lower shell 101 form a sound-absorbing cavity 103, and the upper shell 102 is made of the vehicle floor.

[0079] A sealing gasket is provided between the upper housing 102 and the lower housing 101; at the same time, the upper housing 102 and the lower housing 101 are connected together by a screw connection.

[0080] The silencing cavity 103 is provided with multiple partitions 105 arranged at intervals, which divide the silencing cavity 103 into multiple sub-cavities; and the sub-cavities are connected to each other, and the intake pipe 200 and the exhaust tailpipe 300 are respectively connected to different sub-cavities.

[0081] The plurality of partitions 105 include a first partition 105a, a second partition 105b, and a third partition 105c; the plurality of sub-cavities include a first sub-cavity 1031 located on one side of the first partition 105a, a second sub-cavity 1032 located between the first partition 105a and the second partition 105b, a third sub-cavity 1033 located between the second partition 105b and the third partition 105c, and a fourth sub-cavity 1034 located on one side of the third partition 105c; furthermore, the intake pipe 200 is connected to the second sub-cavity 1032, and the exhaust tailpipe 300 is connected to the fourth sub-cavity 1034 through the inner core pipe 106 that passes through each sub-cavity in sequence.

[0082] The first sub-cavity 1031 and the second sub-cavity 1032 are connected by a through hole 1051 on the first partition 105a, and the through hole 1051 is adapted to reduce the exhaust back pressure in the muffler 100. At the same time, the second sub-cavity 1032 and the third sub-cavity 1033 are connected by a plurality of first micropores 1052 on the second partition 105b, and the third sub-cavity 1033 and the fourth sub-cavity 1034 are connected by a plurality of second micropores 1053 on the third partition 105c.

[0083] The third sub-cavity 1033 is filled with sound-absorbing cotton; at the same time, a connecting pipe 107 is provided between the second partition 105b and the third partition 105c, which connects the second sub-cavity 1032 and the fourth sub-cavity 1034. The connecting pipe 107 and the inner core tube 106 are provided with multiple third micro-holes that communicate with the third sub-cavity 1033.

[0084] One end of the intake pipe 200 extends into the second sub-cavity 1032, and the second sub-cavity 1032 is provided with a reinforcing plate 108 connecting the first partition 105a and the second partition 105b; and the end of the intake pipe 200 extending into the second sub-cavity 1032 is fixedly connected to the reinforcing plate 108.

[0085] The intake pipe 200 includes a first intake pipe 201, a corrugated pipe 202, and a second intake pipe 203 connected in sequence; and an intake flange 2011 is provided at the pipe opening of the first intake pipe 201, and a mounting hook 2012 is provided on the first intake pipe 201; the second intake pipe 203 is connected to the silencer 103.

[0086] In the preferred embodiment of the above exhaust muffler structure, the specific configuration and arrangement of the housing, partition 105, sub-cavity, connecting pipe 107, inner core tube 106, intake pipe 200, exhaust tailpipe 300, etc., can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the housing, partition 105, sub-cavity, connecting pipe 107, inner core tube 106, intake pipe 200, and exhaust tailpipe 300 can also be referred to the descriptions in the above exemplary embodiments.

[0087] The exhaust muffler structure of this embodiment adopts the above design. By making part of the muffler 100 housing composed of the vehicle's floor, the muffler 100 and the vehicle floor can be integrated into a single design, which can improve the material reuse rate of the vehicle body and eliminate redundant mass, thereby contributing to the lightweight design of the entire vehicle. At the same time, by preferably setting the first sub-cavity 1031, the second sub-cavity 1032 and the fourth sub-cavity 1034 as expansion cavities, mainly used to eliminate mid- and low-frequency noise, and setting the third sub-cavity 1033 as a high-frequency resonant cavity, which is filled with sound-absorbing cotton, mainly used to eliminate high-frequency noise, and with the cooperation of the through hole 1051 and various micropores, the absorption and processing capabilities of high, medium and low noise can be effectively improved, so that the exhaust muffler structure has a good noise reduction effect.

[0088] An embodiment of the second aspect of this application provides a vehicle having the exhaust muffler structure of the embodiment of the first aspect.

[0089] The vehicle in this embodiment, by setting the exhaust muffler structure in the first aspect embodiment above, can not only ensure the muffler treatment effect, but also improve the reuse rate of body materials, eliminate redundant mass, and thus help to achieve lightweight design of the whole vehicle, thereby improving the overall quality of the vehicle.

[0090] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. An exhaust muffler structure, installed in a vehicle, characterized in that: Includes a muffler (100) connected to the intake manifold (200) and the exhaust tailpipe (300); The muffler (100) includes a housing that forms a muffler cavity (103) inside, the intake pipe (200) and the exhaust tailpipe (300) are both connected to the muffler cavity (103), and a portion of the housing is formed by the vehicle body floor.

2. The exhaust muffler structure according to claim 1, characterized in that: The outer shell includes an upper shell (102) and a lower shell (101) that are fastened together. The upper housing (102) and the lower housing (101) enclose the sound-absorbing cavity (103), and the upper housing (102) is formed by the vehicle floor.

3. The exhaust muffler structure according to claim 2, characterized in that: A sealing gasket is provided between the upper housing (102) and the lower housing (101); and / or, The upper housing (102) and the lower housing (101) are connected together by a screwed structure.

4. The exhaust muffler structure according to claim 1, characterized in that: The silencing cavity (103) is provided with a plurality of partitions (105) arranged at intervals, and the plurality of partitions (105) divide the silencing cavity (103) into a plurality of sub-cavities; The various sub-cavities are interconnected, and the intake pipe (200) and the exhaust tailpipe (300) are respectively connected to different sub-cavities.

5. The exhaust muffler structure according to claim 4, characterized in that: The plurality of said partitions (105) include a first partition (105a), a second partition (105b) and a third partition (105c); The plurality of said sub-cavities include a first sub-cavity (1031) located on one side of the first partition (105a), a second sub-cavity (1032) located between the first partition (105a) and the second partition (105b), a third sub-cavity (1033) located between the second partition (105b) and the third partition (105c), and a fourth sub-cavity (1034) located on one side of the third partition (105c). The intake pipe (200) is connected to the second sub-chamber (1032), and the exhaust tailpipe (300) is connected to the fourth sub-chamber (1034) through the inner core tube (106) that passes through each of the sub-chambers in sequence.

6. The exhaust muffler structure according to claim 5, characterized in that: The first sub-cavity (1031) and the second sub-cavity (1032) are connected by a through hole (1051) on the first partition (105a), the through hole (1051) being adapted to reduce the exhaust back pressure within the muffler (100); and / or, The second sub-cavity (1032) and the third sub-cavity (1033) are connected by a plurality of first micropores (1052) on the second partition (105b), and the third sub-cavity (1033) and the fourth sub-cavity (1034) are connected by a plurality of second micropores (1053) on the third partition (105c).

7. The exhaust muffler structure according to claim 6, characterized in that: The third sub-cavity (1033) is filled with sound-absorbing cotton; and / or, A connecting pipe (107) is provided between the second partition (105b) and the third partition (105c). The connecting pipe (107) connects the second sub-cavity (1032) with the fourth sub-cavity (1034). The connecting pipe (107) and the inner core tube (106) are provided with a plurality of third micropores that communicate with the third sub-cavity (1033).

8. The exhaust muffler structure according to claim 5, characterized in that: One end of the intake pipe (200) extends into the second sub-cavity (1032), and the second sub-cavity (1032) is provided with a reinforcing plate (108) connecting the first partition (105a) and the second partition (105b). One end of the intake pipe (200) that extends into the second sub-cavity (1032) is fixed to the reinforcing plate (108).

9. The exhaust muffler structure according to any one of claims 1 to 8, characterized in that: The intake pipe (200) includes a first intake pipe (201), a bellows pipe (202), and a second intake pipe (203) connected in sequence. The first air intake pipe (201) is provided with an air intake flange (2011) at the pipe opening, and a mounting hook (2012) is provided on the first air intake pipe (201). The second air intake pipe (203) is connected to the silencer cavity (103).

10. A vehicle, characterized in that: The vehicle is provided with an exhaust muffler structure as described in any one of claims 1 to 9.

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