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CN-224200725-U - Exhaust heat insulation assembly and vehicle

CN224200725UCN 224200725 UCN224200725 UCN 224200725UCN-224200725-U

Abstract

The application discloses an exhaust heat insulation assembly and a vehicle, and belongs to the technical field of vehicle accessories. The disclosed vehicle includes automobile body, silencer and exhaust heat insulating component, the silencer with exhaust heat insulating component all set up in the automobile body, exhaust heat insulating component is located the silencer with between the bottom plate of automobile body, wherein, exhaust heat insulating component is equipped with the amortization chamber, the amortization chamber is including cavity and the radio reception mouth that is linked together, the radio reception mouth orientation the silencer of vehicle, exhaust heat insulating component includes first heat insulating board and the second heat insulating board of superpose, first heat insulating board is equipped with the first bulge that extends along keeping away from the direction of second heat insulating board, the edge of first bulge with second heat insulating board sealing connection is in order to form the cavity, one of first heat insulating board and the second heat insulating board is equipped with the radio reception mouth. The scheme can solve the problem of noise reflection superposition existing in the exhaust heat insulation plate in the related technology.

Inventors

  • CAO XUETAO

Assignees

  • 长城汽车股份有限公司

Dates

Publication Date
20260505
Application Date
20250630

Claims (10)

  1. 1. An exhaust heat insulation assembly is characterized in that the exhaust heat insulation assembly is used for being installed on a vehicle body of a vehicle, the exhaust heat insulation assembly is provided with a silencing cavity (110), the silencing cavity (110) comprises a cavity (111) and a sound receiving opening (112) which are communicated, the sound receiving opening (112) faces towards a silencer of the vehicle, The exhaust heat insulation assembly comprises a first heat insulation plate (120) and a second heat insulation plate (130) which are overlapped, wherein the first heat insulation plate (120) is provided with a first protruding part (121) which extends along a direction away from the second heat insulation plate (130), the edge of the first protruding part (121) is in sealing connection with the second heat insulation plate (130) to form the cavity (111), and one of the first heat insulation plate (120) and the second heat insulation plate (130) is provided with the sound receiving opening (112).
  2. 2. The exhaust heat insulation assembly according to claim 1, wherein the number of the sound receiving openings (112) is plural, and the sound receiving openings (112) are arranged at intervals.
  3. 3. The exhaust heat insulation assembly of claim 1, wherein the first heat shield (120) comprises a first annular connecting portion (122) and the first protruding portion (121) connected, the first protruding portion (121) protruding from a face of the first annular connecting portion (122) facing away from the second heat shield (130), the first annular connecting portion (122) overlapping the second heat shield (130).
  4. 4. An exhaust gas heat insulating assembly according to claim 3, wherein said cavity (111) comprises a first portion (111 a) and a second portion (111 b) in communication, a face of said first projection (121) facing said second heat insulating plate (130) surrounding said first portion (111 a), The second heat insulating plate (130) comprises a second annular connecting part (131) and a second protruding part (132) which are connected, the second annular connecting part (131) is overlapped with the first annular connecting part (122), the second protruding part (132) protrudes along the direction away from the first heat insulating plate (120), and one surface of the second protruding part (132) facing the first protruding part (121) is enclosed into the second part (111 b).
  5. 5. The exhaust heat insulation assembly according to claim 1, wherein the cavity (111) has a central axis symmetrical structure, and the peripheral surface of the cavity (111) includes at least two connected flat surfaces (111 c) and arc surfaces (111 d), and each flat surface (111 c) and each arc surface (111 d) are alternately arranged in the circumferential direction of the cavity (111).
  6. 6. The exhaust and heat insulation assembly of claim 1 wherein the sound receiving opening (112) is provided to the second heat shield (130), the second heat shield (130) being for mounting to the vehicle body; The second heat insulating board (130) is provided with a first installation part (133) and a second installation part (134) which are distributed at intervals, the sound receiving opening (112) is positioned between the first installation part (133) and the second installation part (134), the first installation part (133) and the second installation part (134) are respectively provided with an installation hole (133 a), the exhaust heat insulating assembly further comprises a first fastener and a second fastener, the first fastener is used for detachably connecting the installation holes (133 a) of the first installation part (133) with a first longitudinal beam (220) of a vehicle body, and the second fastener is used for detachably connecting the installation holes (133 a) of the second installation part (134) with a second longitudinal beam (230) of the vehicle body so that the second heat insulating board (130) is installed on the vehicle body.
  7. 7. A vehicle characterized by comprising a vehicle body, a muffler and an exhaust gas insulation assembly (100) as claimed in any one of claims 1 to 6, the muffler and the exhaust gas insulation assembly (100) both being provided to the vehicle body, the exhaust gas insulation assembly (100) being located between the muffler and a floor (210) of the vehicle body, the sound receiving opening (112) of the sound deadening chamber (110) of the exhaust gas insulation assembly (100) being directed towards the muffler.
  8. 8. The vehicle of claim 7, characterized in that the vehicle body comprises a first longitudinal beam (220), a second longitudinal beam (230) and the floor (210), the first longitudinal beam (220) and the second longitudinal beam (230) are arranged on the floor (210) at intervals, at least one of the first heat insulating board (120) and the second heat insulating board (130) is connected with both the first longitudinal beam (220) and the second longitudinal beam (230), and at least part of the sound attenuation cavity (110) is located between the first longitudinal beam (220) and the second longitudinal beam (230).
  9. 9. The vehicle of claim 8, wherein the sound receiving opening (112) is disposed on the second heat insulating plate (130), the second heat insulating plate (130) is disposed on a side of the first longitudinal beam (220) and a side of the second longitudinal beam (230) away from the bottom plate (210), the exhaust heat insulating assembly further comprises a first fastener and a second fastener, the second heat insulating plate (130) is provided with a first mounting portion (133) and a second mounting portion (134) which are arranged at intervals, the first mounting portion (133) is detachably connected with the first longitudinal beam (220) through the first fastener, and the second mounting portion (134) is detachably connected with the second longitudinal beam (230) through the second fastener.
  10. 10. The vehicle of claim 7, characterized in that the number of exhaust insulation assemblies (100) is at least two, including a first exhaust insulation assembly and a second exhaust insulation assembly disposed in spaced apart relation, the volume of the sound deadening chamber (110) of the first exhaust insulation assembly being greater than the volume of the sound deadening chamber (110) of the second exhaust insulation assembly.

Description

Exhaust heat insulation assembly and vehicle Technical Field The application belongs to the technical field of vehicle accessories, and particularly relates to an exhaust heat insulation assembly and a vehicle. Background The exhaust heat insulation plate is a key component of an exhaust system of an internal combustion engine, is generally arranged between a muffler and a vehicle body bottom plate and is mainly used for insulating heat radiation damage of high-temperature tail gas to peripheral parts (such as parts arranged on the vehicle body bottom plate). However, the current exhaust heat insulation board is generally made of a metal substrate, and has high acoustic reflectivity, so that noise radiated by the muffler is easily reflected and overlapped on the surface of the exhaust heat insulation board, thereby causing secondary noise. Disclosure of utility model The embodiment of the application aims to provide an exhaust heat insulation assembly and a vehicle, which can solve the problem of noise reflection superposition existing in the exhaust heat insulation plate in the related art. In a first aspect, embodiments of the present application provide an exhaust insulation assembly for mounting to a body of a vehicle, the exhaust insulation assembly having a sound deadening chamber comprising a chamber body and a sound pickup opening in communication, the sound pickup opening being oriented to a muffler of the vehicle, The exhaust heat insulation assembly comprises a first heat insulation plate and a second heat insulation plate which are overlapped, the first heat insulation plate is provided with a first protruding portion which extends along the direction away from the second heat insulation plate, the edge of the first protruding portion is in sealing connection with the second heat insulation plate to form the cavity, and one of the first heat insulation plate and the second heat insulation plate is provided with the sound receiving opening. In the embodiment of the application, the noise-reducing cavity is arranged on the exhaust heat-insulating component, the sound-receiving opening of the noise-reducing cavity faces the muffler of the vehicle, the noise-reducing cavity utilizes the resonance principle to enable secondary noise generated by the muffler to be transmitted into the cavity of the noise-reducing cavity through the sound-receiving opening, and then the sound wave energy of part of the noise is converted into heat energy through viscous loss and heat conduction in the cavity of the noise-reducing cavity, so that the sound absorption effect is realized, the problem that the secondary noise is caused by superposition of the part of the noise after being reflected by the exhaust heat-insulating component can be avoided, and meanwhile, the noise-reducing cavity is formed by the heat-insulating structure, so that heat generated in the sound absorption process is isolated from the vehicle body, and the influence of the part of the heat on parts on the vehicle body bottom plate is avoided. Therefore, the embodiment of the application can solve the problem of noise reflection superposition existing in the exhaust heat insulation plate in the related technology. Optionally, the number of the sound receiving openings is multiple, and the sound receiving openings are arranged at intervals. Optionally, the first heat insulating board includes the first annular connecting portion that links to each other with first bulge, first bulge in first annular connecting portion deviates from the one side of second heat insulating board, first annular connecting portion with the second heat insulating board superposes. Optionally, the cavity comprises a first part and a second part which are communicated, one surface of the first protruding part facing the second heat insulation plate encloses the first part, The second heat insulating plate comprises a second annular connecting part and a second protruding part which are connected, the second annular connecting part is overlapped with the first annular connecting part, the second protruding part protrudes along the direction away from the first heat insulating plate, and one surface of the second protruding part, which faces the first protruding part, encloses the second part. Optionally, the cavity is of a central axis symmetrical structure, and the peripheral surface of the cavity comprises at least two connected planes and arc-shaped surfaces, and the planes and the arc-shaped surfaces are alternately arranged in the circumferential direction of the cavity. Optionally, the radio receiving opening is arranged on the second heat insulation plate, and the second heat insulation plate is used for being mounted on the vehicle body; The second heat insulating plate is provided with a first installation part and a second installation part which are arranged at intervals, the sound receiving opening is positioned between the first installation part and the secon