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Automotive front wall silencer and automobile

A technology for sound insulation pads and automobiles, which is applied to vehicle parts, layered products, transportation and packaging, etc. It can solve the problems of affecting the sound absorption effect and reducing the permeability of sound-absorbing cotton, so as to improve the sound insulation effect, enhance durability, and reduce the overall effect of weight

Inactive Publication Date: 2019-03-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited space in the front wall, the permeability of the sound-absorbing cotton will be reduced after being squeezed, which will affect the sound-absorbing effect

Method used

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  • Automotive front wall silencer and automobile
  • Automotive front wall silencer and automobile
  • Automotive front wall silencer and automobile

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] Such as Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a car front wall sound insulation pad, which includes a body 100, which is provided with an escape hole 600; the body 100 includes a two-component cotton layer 30, a PU layer 10 and an EVA layer 20, and the EVA Layer 20 is disposed between bicomponent cotton layer 30 and PU layer 10 .

[0027] Among them, by setting the avoidance hole 600, it is possible to prevent the sound insulation pad from interfering with the bumps or ribs on the front ...

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Abstract

The invention discloses an automotive front wall silencer and an automobile, wherein the automotive front wall silencer comprises a body that is provided with clearance holes; the body includes a bicomponent cotton layer, a PU (polyurethane) layer and an EVA (ethylene-vinyl acetate) layer; the EVA layer is arranged between the bicomponent cotton layer and the PU layer. The automotive front wall silencer and the automobile provided herein have the advantages that the bicomponent cotton layer, the PU layer and the EVA layer help effectively improve the silencing effect, the overall weight of thesilencer is reduced, and durability is enhanced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile front wall sound insulation pad and an automobile. Background technique [0002] Car noise is an important factor to measure the quality of a car, and the front wall of a car is one of the main ways for car noise to spread into the car. Existing vehicles have different degrees of sound transmission through the cowl under idling or accelerating conditions. In order to reduce the transmission sound of the front wall of the car, in the prior art, it is generally realized by increasing the sound insulation of the firewall assembly, specifically by bonding a large area of ​​sound-absorbing cotton on the front wall sheet metal. However, due to the limited space in the front wall, the permeability of the sound-absorbing cotton will be reduced after being squeezed, which will affect the sound-absorbing effect. Contents of the invention [0003] The purpose of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/08B32B27/40B32B27/30B32B27/08B32B9/00B32B9/04
CPCB32B9/00B32B9/04B32B27/08B32B27/306B32B27/40B60R13/08
Inventor 汪东斌岳涛戴磊李忠禹赵石军
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD