Exhaust heat insulation assembly and vehicle
By setting a silencing cavity in the exhaust heat insulation component and using the resonance principle to convert noise energy into heat energy, the problem of noise reflection superposition of the exhaust heat insulation board is solved, and the effects of noise absorption and heat isolation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREAT WALL MOTOR CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-05
AI Technical Summary
Existing exhaust heat insulation panels have high sound reflectivity, which causes noise radiated by the muffler to be reflected and superimposed on their surface, resulting in secondary noise problems.
A muffler cavity is set in the exhaust heat insulation component, with the sound inlet of the muffler facing the muffler. The noise is transmitted into the cavity by means of resonance and converted into heat energy through viscous loss and thermal conduction, thus achieving a sound absorption effect. At the same time, the heat insulation structure avoids the heat from affecting the components of the vehicle body floor.
It effectively avoids noise reflection and superposition, reduces secondary noise, and isolates the heat generated during the sound absorption process, protecting the components on the vehicle's underbody.
Smart Images
Figure CN224200725U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of vehicle parts technology, specifically relating to an exhaust heat insulation component and a vehicle. Background Technology
[0002] Exhaust heat shields are a key component of the internal combustion engine exhaust system. They are usually placed between the muffler and the vehicle floor and are mainly used to isolate the high-temperature exhaust gases from the heat radiation damage to surrounding components (such as components located on the vehicle floor).
[0003] However, current exhaust heat insulation panels are usually made of metal substrates, which have high sound reflectivity. This can easily cause the noise radiated by the muffler to be reflected and superimposed on the surface of the exhaust heat insulation panel, thus causing secondary noise. Utility Model Content
[0004] The purpose of this application is to provide an exhaust heat insulation component and vehicle that can solve the problem of noise reflection superposition in exhaust heat insulation panels in related technologies.
[0005] In a first aspect, embodiments of this application provide an exhaust heat insulation component for installation on the body of a vehicle. The exhaust heat insulation component includes a muffler cavity comprising a communicating chamber and a sound-absorbing port, the sound-absorbing port facing the vehicle's muffler.
[0006] The exhaust heat insulation assembly includes a first heat insulation plate and a second heat insulation plate stacked together. The first heat insulation plate has a first protrusion extending in a direction away from the second heat insulation plate. The edge of the first protrusion is sealed to the second heat insulation plate to form the cavity. One of the first heat insulation plate and the second heat insulation plate is provided with the sound receiving port.
[0007] In this embodiment, a silencing cavity is provided on the exhaust heat insulation component, with the sound-receiving port of the silencing cavity facing the vehicle's muffler. Utilizing the principle of resonance, the secondary noise generated by the muffler is transmitted through the sound-receiving port into the cavity. The sound wave energy of this noise is then converted into heat energy within the cavity through viscous loss and thermal conduction, thus achieving a sound absorption effect. This avoids the problem of secondary noise caused by the superposition of noise reflected by the exhaust heat insulation component. Simultaneously, since the silencing cavity is formed by a heat insulation structure, it can isolate the heat generated during sound absorption from the vehicle body, preventing this heat from affecting components on the vehicle's underbody. Therefore, this embodiment solves the problem of noise reflection and superposition existing in exhaust heat insulation panels in related technologies.
[0008] Optionally, there are multiple microphone ports, which are arranged at intervals.
[0009] Optionally, the first heat insulation plate includes a first annular connecting portion and a first protrusion, the first protrusion protruding from the side of the first annular connecting portion away from the second heat insulation plate, and the first annular connecting portion is stacked with the second heat insulation plate.
[0010] Optionally, the cavity includes a first part and a second part that are connected to each other, with the side of the first protrusion facing the second heat insulation plate forming the first part.
[0011] The second heat insulation plate includes a second annular connecting portion and a second protrusion, the second annular connecting portion is stacked with the first annular connecting portion, the second protrusion protrudes in a direction away from the first heat insulation plate, and the side of the second protrusion facing the first protrusion forms the second part.
[0012] Optionally, the cavity has a central axis symmetric structure, and the circumferential surface of the cavity includes at least two connected planes and arcuate surfaces, with each plane and each arcuate surface alternately arranged in the circumferential direction of the cavity.
[0013] Optionally, the microphone is disposed on the second heat insulation plate, and the second heat insulation plate is used to install on the vehicle body;
[0014] The second heat insulation plate has a first mounting portion and a second mounting portion arranged at intervals. The sound inlet is located between the first mounting portion and the second mounting portion. Both the first mounting portion and the second mounting portion have mounting holes. The exhaust heat insulation assembly also includes a first fastener and a second fastener. The first fastener is used to be detachably connected to the first longitudinal beam of the vehicle body through the mounting hole of the first mounting portion. The second fastener is used to be detachably connected to the second longitudinal beam of the vehicle body through the mounting hole of the second mounting portion, so that the second heat insulation plate is installed on the vehicle body.
[0015] Secondly, embodiments of this application provide a vehicle including a body, a muffler, and the aforementioned exhaust heat insulation assembly. Both the muffler and the exhaust heat insulation assembly are disposed on the body, with the exhaust heat insulation assembly located between the muffler and the floor of the body. The sound-collecting opening of the muffler cavity of the exhaust heat insulation assembly faces the muffler. The vehicle provided by this application has the same beneficial effects as the wiring harness system described above, and will not be repeated here.
[0016] Optionally, the vehicle body includes a first longitudinal beam, a second longitudinal beam, and a floor plate, wherein the first longitudinal beam and the second longitudinal beam are spaced apart on the floor plate, and at least one of the first heat insulation plate and the second heat insulation plate is connected to both the first longitudinal beam and the second longitudinal beam, and at least a portion of the cavity of the silencing cavity is located between the first longitudinal beam and the second longitudinal beam.
[0017] Optionally, the sound inlet is disposed on the second heat insulation plate, and the second heat insulation plate is disposed on the side of the first longitudinal beam and the second longitudinal beam away from the bottom plate. The exhaust heat insulation assembly further includes a first fastener and a second fastener. The second heat insulation plate is provided with a first mounting part and a second mounting part arranged at intervals. The first mounting part is detachably connected to the first longitudinal beam through the first fastener, and the second mounting part is detachably connected to the second longitudinal beam through the second fastener.
[0018] Optionally, the number of exhaust heat insulation components is at least two, including a first exhaust heat insulation component and a second exhaust heat insulation component arranged at intervals, wherein the volume of the silencing cavity of the first exhaust heat insulation component is greater than the volume of the silencing cavity of the second exhaust heat insulation component. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the exhaust heat insulation component and part of the vehicle body structure disclosed in the embodiments of this application;
[0020] Figure 2 This is a side view of the exhaust heat insulation component and part of the vehicle body structure disclosed in the embodiments of this application;
[0021] Figure 3 This is a schematic diagram of the exhaust heat insulation component and part of the vehicle body structure disclosed in the embodiments of this application from another perspective.
[0022] Explanation of reference numerals in the attached figures:
[0023] 100 - Exhaust heat insulation component, 110 - Silencing cavity, 111 - Cavity, 111a - First part, 111b - Second part, 111c - Flat surface, 111d - Arc-shaped surface, 112 - Sound intake port, 120 - First heat insulation plate, 121 - First protrusion, 122 - First annular connecting part, 130 - Second heat insulation plate, 131 - Second annular connecting part, 132 - Second protrusion, 133 - First mounting part, 133a - Mounting hole, 133b - Recess, 134 - Second mounting part;
[0024] 210 - Base plate, 220 - First longitudinal beam, 230 - Second longitudinal beam. Detailed Implementation
[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0027] The exhaust heat insulation component and vehicle provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.
[0028] Please refer to Figures 1 to 3 As shown in the embodiment of this application, an exhaust heat insulation component is provided. The exhaust heat insulation component is used to install on the vehicle body. Optionally, the exhaust heat insulation component can be disposed between the floor plate 210 of the vehicle body and the muffler. The muffler is located in the thicker part of the exhaust pipe of the vehicle engine. It is used to reduce the noise generated when the vehicle engine exhausts exhaust gas. Since the exhaust gas emitted by the vehicle engine has a high heat, this part of the exhaust gas dissipates the heat to the surrounding area of the exhaust pipe through heat transfer when passing through the exhaust pipe. The exhaust heat insulation component is used to isolate this part of the heat and prevent this part of the heat from contacting the components disposed on the floor plate 210 and causing damage to them.
[0029] Exhaust heat insulation components are typically made of metal substrates, which have high sound reflectivity. This makes it easy for noise radiated from the muffler to be reflected and superimposed on the surface of the exhaust heat insulation component, thus generating secondary noise. Therefore, the exhaust heat insulation component includes a silencing cavity 110, which includes a communicating cavity 111 and a sound-collecting port 112. The sound-collecting port 112 faces the vehicle's muffler to collect the secondary noise generated by the muffler into the silencing cavity 110 for energy conversion, thereby achieving a silencing effect. Optionally, the silencing cavity 110 can be a Helmholtz resonant cavity, which utilizes the interaction between pressure fluctuations within the resonant cavity and external pressure fluctuations to weaken or eliminate sound waves, thereby achieving a sound absorption effect.
[0030] The exhaust heat insulation assembly includes a first heat insulation plate 120 and a second heat insulation plate 130 stacked together. Optionally, at least one of the first heat insulation plate 120 and the second heat insulation plate 130 can be made of a metal substrate, or it can be made of other structures, such as a multi-layer composite structure. This application embodiment does not impose specific limitations on this. The first heat insulation plate 120 has a first protrusion 121 extending in a direction away from the second heat insulation plate 130. The edge of the first protrusion 121 is sealed to the second heat insulation plate 130 to form a cavity 111. One of the first heat insulation plate 120 and the second heat insulation plate 130 has a sound receiving port 112. That is, the first heat insulation plate 120 can have a sound receiving port 112, and the second heat insulation plate 130 can also have a sound receiving port 112. This application embodiment does not impose specific limitations on this. Optionally, the edge of the first protrusion 121 and the second heat insulation plate 130 can be sealed by full welding; alternatively, both the first heat insulation plate 120 and the second heat insulation plate 130 can be made of profiles of equal thickness.
[0031] In this embodiment, a silencing cavity 110 is provided on the exhaust heat insulation component, and the sound receiving port 112 of the silencing cavity 110 faces the vehicle's muffler. The silencing cavity utilizes the resonance principle to transmit secondary noise generated by the muffler through the sound receiving port 112 to the cavity 111 of the silencing cavity 110. The sound wave energy of this noise is then converted into heat energy within the cavity 111 of the silencing cavity 110 through viscous loss and thermal conduction (in this process, the silencing cavity 110 is similar to a resonant cavity), thereby achieving a sound absorption effect. This avoids the problem of secondary noise caused by the superposition of noise reflected by the exhaust heat insulation component. Simultaneously, since the silencing cavity 110 is formed by a heat insulation structure, it can isolate the heat generated during sound absorption from the vehicle body, preventing this heat from affecting components on the vehicle's underbody. Therefore, this embodiment can solve the problem of noise reflection and superposition existing in exhaust heat insulation panels in related technologies.
[0032] It should be noted that the installation position of the exhaust heat insulation component on the vehicle body is the same as that of the exhaust heat insulation plate in the prior art, and the layout of the exhaust heat insulation component on the vehicle body disclosed in this application remains unchanged.
[0033] In addition, in practical applications, when water stains, dust and other impurities on the road surface pass through the microphone 112 and enter the muffler 110 while the vehicle is in motion, these impurities can flow out from the microphone 112 under their own gravity, thus avoiding accumulation in the muffler 110.
[0034] In an optional embodiment, the number of receiver ports 112 can be one; or, the number of receiver ports 112 can be multiple, with each receiver port 112 arranged at intervals. When the number of receiver ports 112 is set to multiple, the resonance effect can be improved. Since each receiver port 112 can serve as an independent resonant unit, more sound energy can be absorbed and consumed, thereby enhancing the overall sound absorption effect. Furthermore, multiple receiver ports 112 can improve the structural stability and durability of the anechoic chamber 110. Since the resonant cavity of a single receiver port 112 may be more easily damaged when subjected to external impact, the design of multiple receiver ports 112 can distribute stress to reduce the load at a single point, thereby improving the overall structural stability and durability of the anechoic chamber 110.
[0035] Optionally, when there are multiple receiver ports 112, the cross-sectional areas of at least some of the receiver ports 112 may be unequal. Since the resonant frequency of the resonant cavity depends on its geometric dimensions (such as the length and cross-sectional area of the receiver port 112, and the volume of the cavity 111), this scheme changes the range of resonant frequencies by differentiating the cross-sectional area of the receiver ports 112, thereby achieving the absorption of sounds of different frequencies.
[0036] Optionally, the cross-sectional shape of the microphone 112 can be a circle, a rectangle, a polygon, or other shapes, and this application embodiment does not impose specific limitations on this; further optionally, when there are multiple microphones 112, at least some of the microphones 112 can have different cross-sectional shapes, such as a circle, a rectangle, a polygon, or other shapes, and this application embodiment does not impose specific limitations on this.
[0037] Optionally, when there are multiple microphone ports 112, in the direction of extension of the second heat insulation plate 130 to the first heat insulation plate 120, the orthographic projection of each microphone port 112 is located within the orthographic projection of the inner surface of the first protrusion 121, so that each microphone port 112 is opposite to the cavity 111, and individual microphone ports 112 are not blocked.
[0038] In another optional embodiment, the first heat insulation plate 120 includes a first annular connecting portion 122 and a first protrusion 121 connected together. The first protrusion 121 protrudes from the side of the first annular connecting portion 122 facing away from the second heat insulation plate 130. The first annular connecting portion 122 and the second heat insulation plate 130 are stacked. In this case, the connection area between the first heat insulation plate 120 and the second heat insulation plate 130 is larger, which can increase the connection stability and firmness between the two. Of course, the first annular connecting portion 122 can also be omitted. Optionally, the two opposite sides of the first annular connecting portion 122 and the second heat insulation plate 130 are fitted together, which can further improve the sealing performance of the silencing cavity 110.
[0039] In a further optional embodiment, the cavity 111 of the anechoic chamber 110 includes a first portion 111a and a second portion 111b that are connected. The side of the first protrusion 121 facing the second heat insulation plate 130 forms the first portion 111a. The second heat insulation plate 130 includes a second annular connecting portion 131 and a second protrusion 132 that are connected. The second annular connecting portion 131 is stacked with the first annular connecting portion 122. Optionally, the two opposite sides of the second annular connecting portion 131 and the first annular connecting portion 122 are fitted together. The second protrusion 132 protrudes in a direction away from the first heat insulation plate 120, and the side of the second protrusion 132 facing the first protrusion 121 forms the second portion 111b. In this solution, by providing the second protrusion 132 on the second heat insulation plate 130, the volume of the anechoic chamber 110 is increased, thereby absorbing more sound wave energy and improving the anechoic effect of the anechoic chamber 110. Of course, the second heat insulation plate 130 can also be set as a flat plate structure. In this case, the volume of the sound-absorbing cavity 110 can be increased by increasing the size of the first protrusion 121.
[0040] Optionally, in the extension direction of the second heat insulation plate 130 to the first heat insulation plate 120, the cross-sectional area of the first part 111a and the cross-sectional area of the second part 111b can remain unchanged; or, in the extension direction of the second heat insulation plate 130 to the first heat insulation plate 120, the cross-sectional area of the first part 111a gradually decreases and the cross-sectional area of the second part 111b gradually increases, that is, the cross-sectional areas of the first part 111a and the second part 111b are both trapezoidal, so as to facilitate the stamping and forming of the first protrusion 121 and the second protrusion 132.
[0041] Optionally, the cavity 111 can be an asymmetrical structure; or, in an optional embodiment, the cavity 111 is a central axis symmetrical structure, which helps to simplify the reflection path of sound waves, thereby reducing the interference of high-frequency standing waves.
[0042] Optionally, the cavity 111 can be a cylindrical cavity, a spherical cavity, or a rectangular cavity, etc. Among them, the right-angled structure of the rectangular cavity will cause more edge diffraction effects, and the sound energy loss is greater in the low frequency range compared with the cylindrical cavity (the secondary noise caused by the silencer is low-frequency noise). However, the right-angled area is prone to forming secondary sources, so the rectangular cavity needs to be rounded. Optionally, the circumferential surface of the cavity 111 includes at least two connected planes 111c and arc surfaces 111d. Each plane 111c and each arc surface 111d is alternately arranged in the circumferential direction of the cavity 111. By setting the arc surface 111d between adjacent planes 111c, the noise generated by airflow is reduced, thereby improving the noise reduction performance of the silencer cavity 110 for low-frequency noise.
[0043] Optionally, the cavity 111 includes a top surface, a peripheral surface, and a bottom surface arranged sequentially. The sound receiving port 112 is opened on the top surface. The connection between the top surface and the peripheral surface is connected by a first arc-shaped structure, and the connection between the bottom surface and the peripheral surface is connected by a second arc-shaped structure to avoid forming a right-angle structure, thereby further reducing the noise of airflow regeneration and improving the noise reduction performance of the silencing cavity 110 for low-frequency noise.
[0044] Optionally, the microphone 112 can be disposed on the first protrusion 121 of the first heat insulation plate 120; or, in other optional embodiments, the microphone 112 is disposed on the second heat insulation plate 130, which can simplify the structure of the second heat insulation plate 130 and thus reduce the difficulty of its molding. The second heat insulation plate 130 is used for installation on the vehicle body.
[0045] Optionally, the second heat insulation plate 130 can be installed on the vehicle body by welding or other methods; or, in another embodiment, the second heat insulation plate 130 is provided with a first mounting portion 133 and a second mounting portion 134 arranged at intervals, with the sound inlet 112 located between the first mounting portion 133 and the second mounting portion 134. Both the first mounting portion 133 and the second mounting portion 134 are provided with mounting holes 133a. The exhaust heat insulation assembly also includes a first fastener and a second fastener. Optionally, at least one of the first fastener and the second fastener can be a screw, bolt, or other structure, and this application embodiment does not impose specific limitations on this. The first fastener is used to detachably connect to the first longitudinal beam 220 of the vehicle body through the mounting hole 133a of the first mounting portion 133, and the second fastener is used to detachably connect to the second longitudinal beam 230 of the vehicle body through the mounting hole 133a of the second mounting portion 134, so that the second heat insulation plate 130 is installed on the vehicle body, that is, the second heat insulation plate 130 is detachably connected to the vehicle body through the first fastener and the second fastener, which facilitates the disassembly, maintenance, and replacement of the exhaust heat insulation assembly.
[0046] Optionally, both the first mounting portion 133 and the second mounting portion 134 are provided with recesses 133b extending in the direction close to the vehicle body. Mounting holes 133a can be formed in the recesses 133b. When the second heat insulation plate 130 is installed on the vehicle body, a portion of the first fastener can be accommodated in the accommodating space formed by the recesses 133b of the first mounting portion 133, and a portion of the second fastener can be accommodated in the accommodating space formed by the recesses 133b of the second mounting portion 134, thereby preventing the first and second fasteners from protruding from the side of the second heat insulation plate 130 facing the muffler and interfering with the exhaust pipe.
[0047] Optionally, the number of mounting holes 133a provided on the first mounting part 133 can be at least two, and each mounting hole 133a is arranged sequentially at intervals along the length direction of the first longitudinal beam 220. The first fastener corresponds one-to-one with the mounting hole 133a on the first mounting part 133 to increase the connection area between the first mounting part 133 and the first longitudinal beam 220, thereby improving the connection firmness between the two.
[0048] Optionally, the number of mounting holes 133a provided on the second mounting part 134 can be at least two, and each mounting hole 133a is arranged sequentially at intervals along the length direction of the second longitudinal beam 230. The second fastener corresponds one-to-one with the mounting holes 133a on the second mounting part 134, so as to increase the connection area between the second mounting part 134 and the first longitudinal beam 220, thereby improving the connection firmness between the two.
[0049] Optionally, both the first mounting portion 133 and the second mounting portion 134 can be bent relative to the second annular connecting portion 131 of the second heat insulation plate 130, and the first mounting portion 133 and the second mounting portion 134 are arranged opposite to each other. In this case, the first mounting portion 133 and the second mounting portion 134 are respectively used for detachable connection to the two opposite sides of the first longitudinal beam 220 and the second longitudinal beam 230; or, both the first mounting portion 133 and the second mounting portion 134 can be disposed in the same plane as the second annular connecting portion 131 of the second heat insulation plate 130. In this case, the first mounting portion 133 and the second mounting portion 134 extend in opposite directions, and the first mounting portion 133 and the second mounting portion 134 can be detachably connected to the side of the first longitudinal beam 220 and the second longitudinal beam 230 away from the bottom plate 210 of the vehicle body. The structure of the second heat insulation plate 130 can be flexibly selected according to actual needs. The above connection method between the second heat insulation plate 130 and the vehicle body is only for illustrative purposes and is not restrictive.
[0050] Based on the exhaust heat insulation component provided in the embodiments of this application, this application also provides a vehicle, which includes a body, a muffler, and the exhaust heat insulation component 100 disclosed in any of the above embodiments. Both the muffler and the exhaust heat insulation component 100 are disposed on the body, with the exhaust heat insulation component 100 located between the muffler and the floor 210 of the body. The sound-receiving port 112 of the muffler cavity 110 of the exhaust heat insulation component 100 faces the muffler. This vehicle has the same beneficial effects as the exhaust heat insulation component described above, and will not be repeated here.
[0051] In an optional embodiment, the vehicle body includes a first longitudinal beam 220, a second longitudinal beam 230, and a floor plate 210. The first longitudinal beam 220 and the second longitudinal beam 230 are spaced apart on the floor plate 210. At least one of the first heat insulation plate 120 and the second heat insulation plate 130 is connected to both the first longitudinal beam 220 and the second longitudinal beam 230. That is, the first heat insulation plate 120 can be connected to both the first longitudinal beam 220 and the second longitudinal beam 230, or the second heat insulation plate 130 can be connected to both the first longitudinal beam 220 and the second longitudinal beam 230 simultaneously. Regardless of which connection method is adopted, the exhaust heat insulation component 100 can be connected to the vehicle body. This application embodiment does not impose specific limitations on this. At least a portion of the muffler cavity 110 is located between the first longitudinal beam 220 and the second longitudinal beam 230. This means the muffler cavity 110 is configured within this space, improving space utilization and reducing its additional space occupation in the vehicle's height direction. When the entire muffler cavity 110 is located between the first longitudinal beam 220 and the second longitudinal beam 230, it avoids any additional space occupation in the vehicle's height direction. Furthermore, when at least a portion of the muffler cavity 110 is located between the first longitudinal beam 220 and the second longitudinal beam 230, the exhaust heat insulation assembly 100 can be more compactly integrated with the vehicle body. Alternatively, the muffler cavity 110 can also be located outside this space between the first longitudinal beam 220 and the second longitudinal beam 230.
[0052] Optionally, at least one of the first heat insulation plate 120 and the second heat insulation plate 130 can be connected to the opposite sides of the first longitudinal beam 220 and the second longitudinal beam 230. In this case, the sound inlet 112 can be disposed on the first heat insulation plate 120 or the second heat insulation plate 130. Alternatively, in other optional embodiments, the sound inlet 112 is disposed on the second heat insulation plate 230, and the second heat insulation plate 230 is disposed on the side of the first longitudinal beam 220 and the second longitudinal beam 230 away from the bottom plate 210. Optionally, the second heat insulation plate 230 can be fitted to both the first longitudinal beam 220 and the second longitudinal beam 230. The exhaust heat insulation assembly also includes a first fastener and a second fastener. Optionally, at least one of the first fastener and the second fastener can be a screw, bolt, or other structure. This application embodiment does not impose specific limitations on this. The second heat insulation plate 130 is provided with a first mounting part 133 and a second mounting part 134 arranged at intervals. The first mounting part 133 is detachably connected to the first longitudinal beam 220 by a first fastener, and the second mounting part 134 is detachably connected to the second longitudinal beam 230 by a second fastener.
[0053] In the above scheme, the second heat insulation plate 130 is connected to the side of the first longitudinal beam 220 and the second longitudinal beam 230 away from the bottom plate 210. This not only facilitates the installation of the second heat insulation plate 130, but also simplifies its structure. For example, the second heat insulation plate 230 can be set as a flat plate structure, thereby reducing the manufacturing difficulty of the second heat insulation plate 230. In addition, when the second heat insulation plate 230 is set on the side of the first longitudinal beam 220 and the second longitudinal beam 230 away from the bottom plate 210, the first heat insulation plate 120 is set on the side of the first longitudinal beam 220 and the second longitudinal beam 230 away from the bottom plate 210. Between the first longitudinal beam 220 and the second longitudinal beam 230, the space between the first longitudinal beam 220 and the second longitudinal beam 230 can be fully utilized to increase the size of the first protrusion 121, thereby increasing the volume of the cavity 111 of the muffler 110 and improving the muffler effect of the muffler 110. At the same time, it can avoid occupying extra space in the height direction of the vehicle. In other words, with the above-mentioned arrangement, the second heat insulation plate 130 can increase the volume of the cavity 111 of the muffler 110 without occupying extra longitudinal space.
[0054] Optionally, the cavity 111 includes a first part 111a and a second part 111b that are connected. The side of the first protrusion 121 facing the second heat insulation plate 130 forms the first part 111a, that is, the first part 111a is located between the first longitudinal beam 220 and the second longitudinal beam 230. The second heat insulation plate 130 includes a second annular connecting part 131 and a second protrusion 132 that are connected. The second annular connecting part 131 is stacked with the first annular connecting part 122. The second protrusion 132 protrudes in a direction away from the first heat insulation plate 120. The side of the second protrusion 132 facing the first protrusion 121 forms the second part 111b. The second part 111b is located outside the space between the first longitudinal beam 220 and the second longitudinal beam 230. Optionally, in the extension direction of the second heat insulation plate 130 towards the first heat insulation plate 120, the size of the second part 111b can be smaller than the size of the first part 111a, thereby avoiding the second part 111b occupying a large additional space in the height direction of the vehicle.
[0055] In another optional embodiment, the number of exhaust heat insulation components 100 can be one, or the number of exhaust heat insulation components 100 can be at least two, including a first exhaust heat insulation component and a second exhaust heat insulation component arranged at intervals. By setting multiple exhaust heat insulation components, noise in different areas of the vehicle body can be absorbed according to actual needs, thereby improving the user's driving experience.
[0056] Optionally, the volumes of the muffler cavities 110 of each exhaust heat insulation component can be equal; or, in another optional embodiment, the volume of the muffler cavity 110 of the first exhaust heat insulation component is larger than the volume of the muffler cavity 110 of the second exhaust heat insulation component. Since the volume of the muffler cavity 110 is related to the noise reduction, the volumes of each exhaust heat insulation component 110 are differentiated to eliminate noise of different frequencies, thereby further improving the user's driving experience.
[0057] Optionally, the size of the first protrusion of the first exhaust heat insulation component can be larger than the size of the first protrusion of the second exhaust heat insulation component (the size can be at least one of the length, width, and height of the first protrusion). That is, only the first heat insulation plate 120 of each exhaust heat insulation component 100 can be differentiated, while the second heat insulation plate 130 can be standardized. When different volumes of silencing chamber 110 need to be set, only different types of first heat insulation plates 120 need to be selected, which helps to reduce the manufacturing difficulty of the exhaust heat insulation component 100.
[0058] Optionally, the exhaust heat insulation component 100 can be modularly configured, meaning that the first heat insulation plate 120 and the second heat insulation plate 130 are assembled before being installed on the vehicle body. When the exhaust heat insulation component 100 needs to be installed on the vehicle body, it can be connected to the vehicle body via a connecting plate. Specifically, the connecting plate is connected to both the first longitudinal beam 220 and the second longitudinal beam 230. The connecting plate can have a heat insulation function for heat insulation. At this time, at least one of the first heat insulation plate 120 and the second heat insulation plate 130 of the exhaust heat insulation component 100 is detachably connected to the connecting plate. The connecting plate is provided with an clearance opening, through which the first protrusion 121 of the first heat insulation plate 120 can extend to the space between the first longitudinal beam 220 and the second longitudinal beam 230. This solution adopts this configuration method. When there is a difference in the distance between the first longitudinal beam 220 and the second longitudinal beam 230 of different types of vehicles, the modular exhaust heat insulation component 100 can be connected to the body of different types of vehicles through the setting of the connecting plate. This not only facilitates the mass production of the exhaust heat insulation component 100, but also increases the applicability of the exhaust heat insulation component 100.
[0059] It should be noted that the type of vehicle is not limited in this application embodiment. Optionally, the vehicle can be a car, more specifically, such as an electric car, a fuel car or a hybrid electric car. The exhaust heat insulation component provided in this application embodiment can adapt to the design needs of different vehicle models and can be designed according to actual needs.
[0060] Optionally, the vehicle can be a sedan or a sports utility vehicle (i.e., an SUV), and this application embodiment does not impose specific limitations on this.
[0061] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. An exhaust insulation component, characterized in that, The exhaust heat insulation assembly is used for installation on the vehicle body. The exhaust heat insulation assembly is provided with a muffler cavity (110). The muffler cavity (110) includes a communicating cavity (111) and a sound-absorbing port (112). The sound-absorbing port (112) faces the muffler of the vehicle. The exhaust heat insulation assembly includes a first heat insulation plate (120) and a second heat insulation plate (130) stacked together. The first heat insulation plate (120) has a first protrusion (121) extending in a direction away from the second heat insulation plate (130). The edge of the first protrusion (121) is sealed to the second heat insulation plate (130) to form the cavity (111). One of the first heat insulation plate (120) and the second heat insulation plate (130) has the sound receiving port (112).
2. The exhaust heat insulation assembly according to claim 1, characterized in that, The number of the microphones (112) is multiple, and the microphones (112) are arranged at intervals.
3. The exhaust heat insulation assembly according to claim 1, characterized in that, The first heat insulation plate (120) includes a first annular connecting portion (122) and a first protrusion (121) connected together. The first protrusion (121) protrudes from the side of the first annular connecting portion (122) away from the second heat insulation plate (130). The first annular connecting portion (122) is stacked with the second heat insulation plate (130).
4. The exhaust heat insulation assembly according to claim 3, characterized in that, The cavity (111) includes a first part (111a) and a second part (111b) that are connected to each other. The first protrusion (121) surrounds the first part (111a) on the side facing the second heat insulation plate (130). The second heat insulation plate (130) includes a second annular connecting portion (131) and a second protrusion (132) connected together. The second annular connecting portion (131) is stacked with the first annular connecting portion (122). The second protrusion (132) protrudes in a direction away from the first heat insulation plate (120). The side of the second protrusion (132) facing the first protrusion (121) forms the second part (111b).
5. The exhaust insulation assembly according to claim 1, characterized in that, The cavity (111) has a central axis symmetric structure. The circumferential surface of the cavity (111) includes at least two connected planes (111c) and arc surfaces (111d). Each plane (111c) and each arc surface (111d) are alternately arranged in the circumferential direction of the cavity (111).
6. The exhaust insulation assembly according to claim 1, characterized in that, The microphone (112) is disposed on the second heat insulation plate (130), and the second heat insulation plate (130) is used to be installed on the vehicle body; The second heat insulation plate (130) is provided with a first mounting part (133) and a second mounting part (134) arranged at intervals. The sound inlet (112) is located between the first mounting part (133) and the second mounting part (134). Both the first mounting part (133) and the second mounting part (134) are provided with mounting holes (133a). The exhaust heat insulation assembly also includes a first fastener and a second fastener. The first fastener is used to be detachably connected to the first longitudinal beam (220) of the vehicle body through the mounting hole (133a) of the first mounting part (133). The second fastener is used to be detachably connected to the second longitudinal beam (230) of the vehicle body through the mounting hole (133a) of the second mounting part (134), so that the second heat insulation plate (130) is installed on the vehicle body.
7. A vehicle, characterized in that, The device includes a vehicle body, a muffler, and an exhaust heat insulation assembly (100) according to any one of claims 1 to 6, wherein the muffler and the exhaust heat insulation assembly (100) are both disposed on the vehicle body, the exhaust heat insulation assembly (100) is located between the muffler and the floor plate (210) of the vehicle body, and the sound intake (112) of the muffler cavity (110) of the exhaust heat insulation assembly (100) faces the muffler.
8. The vehicle according to claim 7, characterized in that, The vehicle body includes a first longitudinal beam (220), a second longitudinal beam (230), and a floor plate (210). The first longitudinal beam (220) and the second longitudinal beam (230) are spaced apart on the floor plate (210). At least one of the first heat insulation plate (120) and the second heat insulation plate (130) is connected to both the first longitudinal beam (220) and the second longitudinal beam (230). At least a portion of the silencing cavity (110) is located between the first longitudinal beam (220) and the second longitudinal beam (230).
9. The vehicle according to claim 8, characterized in that, The microphone (112) is disposed on the second heat insulation plate (130). The second heat insulation plate (130) is disposed on the side of the first longitudinal beam (220) and the second longitudinal beam (230) away from the bottom plate (210). The exhaust heat insulation assembly also includes a first fastener and a second fastener. The second heat insulation plate (130) is provided with a first mounting part (133) and a second mounting part (134) arranged at intervals. The first mounting part (133) is detachably connected to the first longitudinal beam (220) through the first fastener. The second mounting part (134) is detachably connected to the second longitudinal beam (230) through the second fastener.
10. The vehicle according to claim 7, characterized in that, The number of exhaust heat insulation components (100) is at least two, including a first exhaust heat insulation component and a second exhaust heat insulation component arranged at intervals, wherein the volume of the silencing cavity (110) of the first exhaust heat insulation component is greater than the volume of the silencing cavity (110) of the second exhaust heat insulation component.