CN203283151U - Automobile front wall internal sound insulation cushion layer - Google Patents
Automobile front wall internal sound insulation cushion layer Download PDFInfo
- Publication number
- CN203283151U CN203283151U CN2013203392886U CN201320339288U CN203283151U CN 203283151 U CN203283151 U CN 203283151U CN 2013203392886 U CN2013203392886 U CN 2013203392886U CN 201320339288 U CN201320339288 U CN 201320339288U CN 203283151 U CN203283151 U CN 203283151U
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- CN
- China
- Prior art keywords
- sound
- sound insulation
- front wall
- automobile front
- isolating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The utility model discloses an automobile front wall internal sound insulation cushion layer which comprises a first sound insulation layer and a second sound insulation layer. The second sound insulation layer is fixed on the inner side of the metal plate of an automobile front wall, a sound insulation film is connected between the first sound insulation layer and the second sound insulation layer, and a plurality of through holes are evenly distributed in the sound insulation film. According to the automobile front wall internal sound insulation cushion layer, the first sound insulation layer, the second sound insulation layer and the sound insulation film are adopted to carry out absorption and reflection on incident noise, and the acoustic performance of the automobile front wall internal sound insulation cushion layer is guaranteed effectively. In addition, due to the facts that the first sound insulation layer and the second sound insulation are connected through the sound insulation film and the through holes are formed in the sound insulation film, mass of the sound insulation cushion layer is reduced effectively.
Description
Technical field
The utility model relates to a kind of sound insulation bed course, relates in particular to a kind of automobile front wall internal sound insulation bed course.
Background technology
In the Vehicle Driving Cycle process, arround vehicle and inner can produce a lot of noises, comprise that motor noise, Feng Zao, road make an uproar etc., these noise sources propagate in car from each channel, to the people, cause human discomfort.Therefore, arrange generally in existing vehicle that sound insulating pad is isolated or absorption of noise, improve by this comfort of member in car.In order to isolate better the noise in machinery space, traditional automobile front wall internal sound insulation pad adopts heavy layer (as materials such as ethylene-vinyl acetate copolymers) as barrier layer usually, and the sponge that is equipped with polyurethane foam is as decoupler layer, and wherein, the surface density of heavy layer is generally at 4～6kg/m
2, therefore there is Heavy Weight in traditional sound insulating pad, the high in cost of production shortcoming, and therefore, made automobile front wall internal sound insulation pad weight is larger, for complete vehicle weight, installation and transportation, all causes burden.
The utility model content
For the problem that prior art exists, the purpose of this utility model is to provide a kind of automobile front wall internal sound insulation bed course, reduces the density of sound insulation bed course when it can guarantee soundproof effect, thereby alleviates the quality of automobile front wall internal sound insulation bed course.
The purpose of this utility model is achieved through the following technical solutions:
A kind of automobile front wall internal sound insulation bed course, comprise the first sound isolating layer and the second sound isolating layer, it is inboard that described the second sound isolating layer is fixed on described automobile front wall panel beating, is connected with sound deadening sheet between described the first sound isolating layer and described the second sound isolating layer, is distributed with equably a plurality of through holes on described sound deadening sheet.
Further, the flow resistance of described sound deadening sheet is 1 * 10
7N.s/m
3～2 * 10
8N.s/m
2.
Further, the surface density of described sound deadening sheet is 10～100g/m
2, the thickness of described sound deadening sheet is 0-1mm.
Further, described sound deadening sheet comprises the first sound deadening sheet and the second sound deadening sheet, described the first sound deadening sheet is arranged between described automobile front wall panel beating and automobile instrument panel, and described the second sound deadening sheet is arranged on described automobile front wall panel beating and is positioned at outside described automobile instrument panel covering.
Further, the flow resistance of described the first sound deadening sheet is 1 * 10
7N.s/m
3～1 * 10
8N.s/m
8, the flow resistance of described the second sound deadening sheet is 1 * 10
8N.s/m
3～2 * 10
8N.s/m
3.
Further, the surface density of described the first sound isolating layer is 0.6～1.6kg/m
2.
Further, the thickness of described the first sound isolating layer is 3-8mm.
Further, the surface density of described the second sound isolating layer is 0.6～1.6kg/m
2.
Further, the thickness of described the second sound isolating layer is 10-25mm.
Further, it is characterized in that, described the first sound isolating layer and described the second sound isolating layer are made by cotton felt material.
The utility model absorbs and reflects incident-noise by the first sound isolating layer, the second sound isolating layer and sound deadening sheet, effectively the acoustic efficiency of assurance sound automobile front wall internal sound insulation bed course.In addition, the utility model connects the first sound isolating layer and the second sound isolating layer by sound deadening sheet, and offers a plurality of through holes on described sound deadening sheet, has effectively reduced the quality of sound insulation bed course.
Description of drawings
Fig. 1 is a kind of preferred automobile front wall internal sound insulation bed course schematic diagram of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, a preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model provides a kind of automobile front wall internal sound insulation bed course, comprise the first sound isolating layer 1 and the second sound isolating layer 2,2 layers of described the second sound insulations are fixed on described automobile front wall panel beating 4 inboards, described the second sound isolating layer 2 can adopt any connection mode known in those skilled in the art with being connected of automobile front wall panel beating 4, such as bonding etc.
be connected with sound deadening sheet 3 between the utility model the first sound isolating layer 1 and the second sound isolating layer 2, the first sound isolating layer 1 of the present utility model and the second sound isolating layer 2 are bonded together by sound deadening sheet 3, consider that the polyethylene film material becomes molten condition when heating-up temperature reaches 132-144 ℃, polyethylene film need not to heat excessive temperature and just can carry out the first sound isolating layer 1 and the second sound isolating layer 2 effectively bonding, therefore the sound deadening sheet 3 of the present embodiment is preferably polyethylene film, certainly, polyethylene film is only also a kind of preferred version of the present utility model, the utility model can also adopt any material that is fit to bonding the first sound isolating layer 1 and the second sound isolating layer 2 known in those skilled in the art, repeat no more herein.When bonding, at first sound deadening sheet 3 is melted under high-temperature heating, then be bonded between the first sound isolating layer 1 and the second sound isolating layer 2, after cooling curing, the first sound isolating layer 1 and the second sound isolating layer 2 namely bond together.
Sound deadening sheet 3 of the present utility model, except having cohesive action, can also be regulated the air flow resistance of sound insulation bed course, and particularly, the flow resistance of sound deadening sheet 3 is larger, and sound insulation value is higher, and sound absorption qualities can reduce; Otherwise flow resistance is less, and sound insulation value is less, and sound absorption qualities can improve.Through the lot of experiments checking, the flow resistance of the sound deadening sheet of the present embodiment is 1 * 10
7N.s/m
3～2 * 10
8N.s/m
3The time, the sound insulation bed course can obtain good sound insulation value and improve simultaneously sound absorption qualities.As everyone knows, the flow resistance of film is relevant to the thickness of film and surface density, and in order further to obtain above-mentioned flow resistance, the surface density of sound deadening sheet 3 of the present utility model is preferably 10～100g/m
2, the thickness of described sound deadening sheet 3 is preferably 0-1mm.
Be distributed with equably a plurality of through holes on sound deadening sheet 3 of the present utility model, offer through hole on sound deadening sheet 3 and not only can reduce density and the quality of automobile front wall internal sound insulation bed course, also affect the acoustic efficiency of automobile front wall internal sound insulation bed course.The percent opening of described sound deadening sheet 3 refers in the unit area sound deadening sheet offer the shared area ratio of through hole, and described sound deadening sheet 3 percent openings are larger, and the air flow resistance reduces, and sound absorption qualities can improve.But therefore the excessive reflection efficiency of sound deadening sheet to incident-noise that also can reduce of percent opening, consider that sound deadening sheet 3 needs simultaneously the incident noise to be reflected and absorbs, and the percent opening of the sound deadening sheet 3 of the present embodiment preferably is set to 0-30%.
On the basis of above-described embodiment, sound deadening sheet 3 of the present utility model comprises the first sound deadening sheet 31 and the second sound deadening sheet 32, described the first sound insulation 31 films are arranged between described automobile front wall panel beating 4 and automobile instrument panel 5, described the second sound deadening sheet 32 is arranged on described automobile front wall panel beating 4 and is positioned at outside described automobile instrument panel 5 coverings, further, the flow resistance of described the first sound deadening sheet is preferably 1 * 10
7N.s/m
3～1 * 10
8N.s/m
3, the flow resistance of described the second sound deadening sheet is preferably 1 * 10
8N.s/m
3～2 * 10
8N.s/m
3.The sound insulation bed course in the purpose that diverse location arranges the different sound deadening sheet of flow resistance is:, because car instrument face plate 5 has certain sound-absorbing and sound insulation function, do not need higher sound transmission loss, therefore in this zone, adopt sound deadening sheet low-cost, low weight.The zone that the second sound deadening sheet covers, directly towards occupant area, therefore need to arrange higher noise insulation factor in this zone, namely adopts the sound deadening sheet of high flow resistance, thereby can intercept better the engine bin noise.As seen, the utility model sound deadening sheet of different flow resistances being set by the diverse location at the automobile front wall sound-isolation pad layer can guarantee that not only soundproof effect can also further save cost and the weight of sound insulation bed course.
The performance of body insulation mainly adopts surface density and thickness to limit, the density=surface density of body insulation * thickness, so the identical body insulation of density, and thinner body insulation surface density is larger.The surface density of first sound isolating layer 1 of the present embodiment is preferably 0.6～1.6kg/m
2The thickness of the first sound isolating layer 1 is preferably 3-8mm, the Main Function of described the first sound isolating layer 1 is to intercept noise to transmit in car, and play the sound absorption of fraction, body insulation is finer and close, sound insulation value better, the first sound isolating layer 1 is hot pressed into the hard formation of 3-8mm, density of material increases, and has therefore improved the sound insulation value of sound insulation bed course; The surface density of second sound isolating layer 2 of the present embodiment is preferably 0.6～1.6kg/m
2, the thickness of the second sound isolating layer 2 is preferably 10-25mm, and the second sound isolating layer 2 mainly plays sound absorption, and the utility model increases the thickness of the second sound isolating layer 2, makes density reduce, therefore improve the sound absorption qualities of sound insulation bed course.
In order further to reduce the weight of sound insulation bed course, the first sound isolating layer 1 of the present utility model and the second sound isolating layer 2 are preferably made by cotton felt material, cotton felt material is lighter compared to traditional material weight, through test determination, but the sound insulation bed course loss of weight 50% that adopts cotton felt material to make.Certainly, cotton felt material is only also the preferred version of the present embodiment the first sound isolating layer 1 and the second sound isolating layer 2, those skilled in the art can also adopt other material that is suitable as sound isolating layer well known in the art to prepare the first sound isolating layer 1 and the second sound isolating layer 2, repeat no more herein.
As shown in Figure 1, see through automobile front wall panel beating 4 from machinery space when the noise sound wave when propagating in passenger accommodation, respectively in the reflection of generation at the interface and the refraction of automobile front wall panel beating 4 and the second sound isolating layer 2, the second sound isolating layer 2 and sound deadening sheet 3, sound deadening sheet 3 and the first sound isolating layer 1 and the first sound isolating layer 1 and instrument face plate 5.Front wall internal sound insulation pad is adopted the sound insulation tunic of low flow resistance by instrument carrier panel 5 overlay areas,, even sound wave sees through front wall internal sound insulation bed course, also can, at the inner Multi reflection of instrument carrier panel, finally by body insulation, be absorbed., not by the instrument carrier panel overlay area, adopt the sound deadening sheet of high flow resistance for front wall internal sound insulation pad, intercept noise and further import in passenger accommodation.Compare with traditional sound insulation bed course, the utility model has not only alleviated the weight of automobile front wall internal sound insulation bed course,, also by absorption and the reflection to noise of sound isolating layer and sound deadening sheet, has effectively guaranteed the acoustic efficiency of automobile front wall internal sound insulation bed course.
Above-described embodiment is only for illustration of the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; in the situation that do not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical solutions also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (10)
1. automobile front wall internal sound insulation bed course, it is characterized in that, comprise the first sound isolating layer and the second sound isolating layer, it is inboard that described the second sound isolating layer is fixed on described automobile front wall panel beating, be connected with sound deadening sheet between described the first sound isolating layer and described the second sound isolating layer, be distributed with equably a plurality of through holes on described sound deadening sheet.
2. automobile front wall internal sound insulation bed course according to claim 1, is characterized in that, the flow resistance of described sound deadening sheet is 1 * 10
7N.s/m
3～2 * 10
8N.s/m
3.
3. automobile front wall internal sound insulation bed course according to claim 2, is characterized in that, the surface density of described sound deadening sheet is 10～100g/m
2, the thickness of described sound deadening sheet is 0-1mm.
4. automobile front wall internal sound insulation bed course according to claim 2, it is characterized in that, described sound deadening sheet comprises the first sound deadening sheet and the second sound deadening sheet, described the first sound deadening sheet is arranged between described automobile front wall panel beating and automobile instrument panel, and described the second sound deadening sheet is arranged on described automobile front wall panel beating and is positioned at outside described automobile instrument panel covering.
5. automobile front wall internal sound insulation bed course according to claim 4, is characterized in that, the flow resistance of described the first sound deadening sheet is 1 * 10
7N.s/m
3～1 * 10
8N.s/m
3, the flow resistance of described the second sound deadening sheet is 1 * 10
8N.s/m
3～2 * 10
8N.s/m
3.
6. automobile front wall internal sound insulation bed course according to claim 1, is characterized in that, the surface density of described the first sound isolating layer is 0.6～0.6kg/m
2.
7. automobile front wall internal sound insulation bed course according to claim 6, is characterized in that, the thickness of described the first sound isolating layer is 3-8mm.
8. automobile front wall internal sound insulation bed course according to claim 1, is characterized in that, the surface density of described the second sound isolating layer is 0.6～1.6kg/m
2.
9. automobile front wall internal sound insulation bed course according to claim 8, is characterized in that, the thickness of described the second sound isolating layer is 10-25mm.
10. the described automobile front wall internal sound insulation of any one bed course according to claim 6-9, is characterized in that, described the first sound isolating layer and described the second sound isolating layer are made by cotton felt material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203392886U CN203283151U (en) | 2013-06-13 | 2013-06-13 | Automobile front wall internal sound insulation cushion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203392886U CN203283151U (en) | 2013-06-13 | 2013-06-13 | Automobile front wall internal sound insulation cushion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203283151U true CN203283151U (en) | 2013-11-13 |
Family
ID=49539527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203392886U Expired - Fee Related CN203283151U (en) | 2013-06-13 | 2013-06-13 | Automobile front wall internal sound insulation cushion layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203283151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527533A (en) * | 2014-12-19 | 2015-04-22 | 北汽银翔汽车有限公司 | Novel front wall sound-insulation pad |
| CN114148061A (en) * | 2022-01-17 | 2022-03-08 | 沙龙智行科技有限公司 | Sound insulation material, automobile front wall sound insulation structure, automobile and sound insulation material preparation method |
-
2013
- 2013-06-13 CN CN2013203392886U patent/CN203283151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527533A (en) * | 2014-12-19 | 2015-04-22 | 北汽银翔汽车有限公司 | Novel front wall sound-insulation pad |
| CN114148061A (en) * | 2022-01-17 | 2022-03-08 | 沙龙智行科技有限公司 | Sound insulation material, automobile front wall sound insulation structure, automobile and sound insulation material preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |