CN210478591U - Can reduce sound insulation pad that wind made an uproar - Google Patents

Abstract

The utility model discloses a can reduce sound insulation pad of wind noise, including wind sound absorption layer, the below of wind sound absorption layer is provided with the puigging, and the below of puigging is provided with the sound absorbing layer, and the below on sound absorbing layer is provided with the damping layer, and the v-groove has been seted up on the outside surface on wind sound absorption layer, and the circular slot has been seted up to the top in v-groove, and the inside on wind sound absorption layer is provided with the thru hole, is provided with the bond line between wind sound absorption layer, puigging, sound absorbing layer, the damping layer respectively. The utility model has the advantages of simple and reasonable structure, through the sound insulation that gives sound insulation with car sound insulation pad set up have sound absorbing layer and puigging range upon range of each other give sound the structure of sound main part is inhaled in the sound insulation, air current wind sound, engine noise when traveling, the vibration scheduling problem of engine carries out absorption and weakening of successively many times, improves the sound insulation effect and has alleviateed the weight of product greatly, accords with the lightweight notion of modern automobile design, plays energy saving and emission reduction's effect to the whole car.

Description

Can reduce sound insulation pad that wind made an uproar

Technical Field

The utility model relates to a car gives sound insulation and fills up technical field, in particular to can reduce the sound insulation pad that wind made an uproar.

Background

The noise, vibration and harshness of the automobile is a comprehensive problem in measuring the manufacturing quality of the automobile, and gives the automobile user the most direct and surface feeling. The problem of noise, vibration and sound vibration roughness of vehicles is one of the concerns of various large vehicle manufacturing enterprises and component enterprises in the international automobile industry, statistical data shows that 1/3 faults of the whole vehicle are related to the noise, vibration and sound vibration roughness of the vehicles, and nearly 20% of research and development cost of various large companies is consumed in solving the noise, vibration and sound vibration roughness of the vehicles. The sound insulation pad is used for eliminating or weakening the problem of noise generated when an automobile runs, the wind noise of airflow generated during running is usually high, an effective car can be designed into a streamline type to reduce wind dryness, most automobiles reduce the wind noise through the sound insulation pad, the automobile sound insulation pad is generally composed of a sound insulation material layer (the material layer is dense) and a sound absorption material layer (the material layer is loose and porous), the sound insulation pad can be applied to various parts such as an automobile engine cabin, a passenger cabin, a luggage box and the like, has the functions of sound insulation, sound absorption and the like, and can provide a quiet driving environment for a driver and passengers

The existing automobile sound insulation pad is generally formed by compounding a plurality of layers of fiber mats and other materials, but most of sound insulation materials adopted by the existing automobile sound insulation pad are ethylene-vinyl acetate copolymers, and a large amount of volatile organic compounds are generally generated in use, wherein formaldehyde, acetaldehyde, acrolein and the like are mainly generated, and harmful gaseous organic compounds can cause harm to human health and can cause harm to human life when the concentration is too high, so that the sound insulation pad with extremely low harm to human bodies is designed, on one hand, the requirements of energy conservation and emission reduction are met, and on the other hand, the requirement of light weight is met; in addition, the sound absorption effect of the existing sound insulation pad is poor, and particularly the absorption effect on wind noise is poor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a sound insulating pad capable of reducing wind noise, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a can reduce sound insulation pad of wind noise, includes the wind sound absorption layer, the below of wind sound absorption layer is provided with the puigging, the below of puigging is provided with the sound absorbing layer, the below on sound absorbing layer is provided with the damping layer, the v-groove has been seted up on the outside surface on wind sound absorption layer, the circular slot has been seted up to the top in v-groove, the inside on wind sound absorption layer is provided with the thru hole, be provided with the bond line between wind sound absorption layer, puigging, sound absorbing layer, the damping layer respectively.

Preferably, the sound insulation layer comprises a low-density nano-foaming layer positioned at the upper end and a high-density nano-foaming layer positioned at the lower end, the low-density nano-foaming layer and the high-density nano-foaming layer are both made of closed-cell foaming polyurethane materials, and the density of the low-density nano-foaming layer is 10kg/m³The density of the high-density nano foaming layer is 20kg/m³And the thickness of the sound insulation layer is ten to sixteen millimeters.

Preferably, the sound absorption layer includes the non-woven fabrics layer that is located the upper end and the XPE foaming layer that is located the lower extreme, the material on non-woven fabrics layer is polyester fiber acupuncture non-woven fabrics material, and the thickness size on non-woven fabrics layer is a millimeter, the thickness size on XPE foaming layer is four to ten millimeters.

Preferably, the through holes are uniformly distributed in the wind sound absorption layer, the aperture size of each through hole is zero point one millimeter, and the thickness of the damping layer is zero point two to zero point five millimeters.

Preferably, the circular grooves are semicircular, the number of the circular grooves and the number of the v-shaped grooves are a plurality of groups, and the damping layer is made of melamine soundproof cotton materials.

Preferably, the material of the bonding layer is an epoxy resin adhesive material, and the thickness of the bonding layer is between zero point five and zero point one millimeter.

Preferably, the outer side edges of the wind sound absorption layer and the damping layer are corrugated, and the wind sound absorption layer is made of a nitrile rubber material.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a can reduce the sound insulation pad of wind noise, the utility model discloses, simple structure, reasonable through the sound insulation that gives sound insulation fills up the setting with the car and has sound absorbing layer and puigging inhale the structure of sound main part, air current wind sound, engine noise when traveling, the vibration scheduling problem of engine carries out absorption and weakening successively many times, improves the sound insulation effect. Meanwhile, a light foamed multilayer structure is used, the ethylene-vinyl acetate copolymer is not contained, the content of harmful substances and organic volatile matters is very low, the weight of the product is greatly reduced, the concept of light design of modern automobiles is met, the energy-saving and emission-reduction effects are achieved for the whole automobile, a plurality of v-shaped grooves and circular grooves are arranged, the length of the surface of the sound insulation pad is prolonged, more sound waves are in contact with the sound insulation pad, and therefore the sound waves of the sound insulation pad are absorbed.

Drawings

FIG. 1 is a schematic cross-sectional view of a sound insulation mat for reducing wind noise according to the present invention;

FIG. 2 is a schematic view of the overall structure of a sound insulation pad for reducing wind noise according to the present invention;

fig. 3 is a schematic structural view of the wind noise absorbing layer of the sound insulating pad of the present invention capable of reducing wind noise.

In the figure: 1. a wind sound absorbing layer; 2. a sound insulating layer; 201. a low density nano-foamed layer; 202. a high density nano-foamed layer; 3. a sound absorbing layer; 301. no gauze layer; 302. an XPE foam layer; 4. a second damping layer; 5. a circular groove; 6. a v-shaped groove; 7. an adhesive layer; 8. and (4) through holes.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-3, a soundproof pad capable of reducing wind noise comprises a wind sound absorption layer 1, a soundproof layer 2 is disposed under the wind sound absorption layer 1 to isolate wind sound of running air, engine noise, noise generated by vibration of an engine, etc., a sound absorption layer 3 is disposed under the soundproof layer 2 to further weaken and absorb wind dryness, a damping layer 4 is disposed under the sound absorption layer 3 to absorb wind dryness, a v-shaped groove 6 is formed on an outer surface of the wind sound absorption layer 1 to extend a surface length of the soundproof pad, more sound waves are in contact with the soundproof pad to be absorbed, a circular groove 5 is formed above the v-shaped groove 6 to extend the surface length of the soundproof pad to be absorbed, a through hole 8 is disposed inside the wind sound absorption layer 1 to be absorbed more easily, the sound insulation efficiency is improved, and the bonding layers 7 are respectively arranged among the wind sound absorption layer 1, the sound insulation layer 2, the sound absorption layer 3 and the damping layer 4.

It should be noted that, the utility model relates to a can reduce sound insulation pad of wind noise, puigging 2 is including the low density nanometer foaming layer 201 that is located the upper end and the high density nanometer foaming layer 202 that is located the lower extreme, the material of low density nanometer foaming layer 201 and high density nanometer foaming layer 202 is obturator foaming polyurethane material, it is thermal-insulated to have, keep warm, the technical characteristics of shock attenuation and noise reduction, can reduce air current wind noise effectively and spread into in the driver's cabin, improve the syllable-dividing effect, and the density size of low density nanometer foaming layer 201 is 10kg/m³The density of the high-density nano-foaming layer 202 is 20kg/m³The sound insulation layer 2 is ten to sixteen millimeters thick, the sound absorption layer 3 comprises a non-woven fabric layer 301 located at the upper end and an XPE foaming layer 302 located at the lower end, the non-woven fabric layer 301 is made of a polyester fiber needle-punched non-woven fabric material, the content of harmful substances and organic volatile matters is very low, the whole automobile is energy-saving and emission-reducing, the thickness of the non-woven fabric layer 301 is one millimeter, the thickness of the XPE foaming layer 302 is four to ten millimeters thick, the tensile strength is high, the heat insulation effect is good, the through holes 8 are uniformly distributed in the wind sound absorption layer 1, the aperture size of the through holes 8 is zero point one millimeter, sound waves are absorbed more easily, the sound insulation efficiency is improved, the thickness of the damping layer 4 is zero point two to five zero point millimeters, the circular groove 5 is semicircular, and the number of the circular grooves 5 and the number of the v-shaped grooves 6 are a plurality of groups, the extension gives sound insulation and fills up the length on surface, more sound waves and give sound insulation and fill up the contact, thereby make the sound wave that gives sound insulation and fill up be melamine soundproof cotton material by the material of absorbing damping layer 4, the material of bond line 7 is epoxy glue material, possess powerful viscidity, it is soft to fold, odorless, after using also can not appear coming unstuck because of the temperature is low, and the thickness size of bond line 7 between zero point five to zero point one millimeter, the outside border of wind sound absorption layer 1 and damping layer 4 is rippleThe wind sound absorption layer 1 is made of nitrile rubber.

The working principle is as follows: through the structure that has the sound insulation of sound absorbing layer 3 and puigging 2 that stacks up each other and inhale the sound main part with car sound insulation pad setting, air current wind sound, engine noise, the vibration scheduling problem of engine carry out absorption and weakening of succeeding and many times when traveling, improve the effect that gives sound insulation. Meanwhile, the low-density nano-foaming layer 201 and the high-density nano-foaming layer 202 are both made of closed-cell foaming polyurethane materials and do not contain ethylene-vinyl acetate copolymer, the content of harmful substances and organic volatile matters is very low, the non-woven fabric layer 301 is made of polyester fiber needle-punched non-woven fabric materials, the weight of a product is reduced, meanwhile, the V-shaped grooves 6 and the circular grooves 5 are arranged, the length of the surface of the sound insulation pad is prolonged, more sound waves are in contact with the sound insulation pad, and therefore the sound insulation pad is absorbed, meanwhile, the sound insulation layer 2, the sound absorption layer 3 and the damping layer 4 are respectively provided with the bonding layer 7, and the bonding layer is molded into a whole through a hot press.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A sound insulating pad capable of reducing wind noise, comprising a wind sound absorbing layer (1), characterized in that: the wind sound absorption layer is characterized in that a sound insulation layer (2) is arranged below the wind sound absorption layer (1), a sound absorption layer (3) is arranged below the sound insulation layer (2), a damping layer (4) is arranged below the sound absorption layer (3), a v-shaped groove (6) is formed in the outer side surface of the wind sound absorption layer (1), a circular groove (5) is formed in the upper portion of the v-shaped groove (6), through holes (8) are formed in the wind sound absorption layer (1), and an adhesive layer (7) is arranged among the wind sound absorption layer (1), the sound insulation layer (2), the sound absorption layer (3) and the damping layer (4).

2. A sound insulating mat for reducing wind noise according to claim 1, wherein: the sound insulation layer (2) comprises a low-density nano foaming layer (201) positioned at the upper end and a high-density nano foaming layer (202) positioned at the lower end, the low-density nano foaming layer (201) and the high-density nano foaming layer (202) are both made of closed-cell foaming polyurethane materials, and the density of the low-density nano foaming layer (201) is 10kg/m³The density of the high-density nano foaming layer (202) is 20kg/m³The thickness of the sound insulation layer (2) is ten to sixteen millimeters.

3. A sound insulating mat for reducing wind noise according to claim 1, wherein: the sound absorption layer (3) is including non-woven fabrics layer (301) that are located the upper end and XPE foaming layer (302) that are located the lower extreme, the material of non-woven fabrics layer (301) is polyester fiber acupuncture non-woven fabrics material, and the thickness size of non-woven fabrics layer (301) is a millimeter, the thickness size of XPE foaming layer (302) is four to ten millimeters.

4. A sound insulating mat for reducing wind noise according to claim 1, wherein: the through holes (8) are uniformly distributed in the wind sound absorption layer (1), the aperture size of the through holes (8) is zero point one millimeter, and the thickness of the damping layer (4) is zero point two to zero point five millimeters.

5. A sound insulating mat for reducing wind noise according to claim 1, wherein: the shape of circular groove (5) is semi-circular, and the quantity of circular groove (5) and v-groove (6) is a plurality of groups, the material of damping layer (4) is melamine soundproof cotton material.

6. A sound insulating mat for reducing wind noise according to claim 1, wherein: the material of the adhesive layer (7) is an epoxy resin adhesive material, and the thickness of the adhesive layer (7) is between zero point and five to zero point and one millimeter.

7. A sound insulating mat for reducing wind noise according to claim 1, wherein: the outer side edges of the wind sound absorption layer (1) and the damping layer (4) are corrugated, and the wind sound absorption layer (1) is made of nitrile rubber.

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