CN206186476U - Hot briquetting car gives sound insulation and fills up structure - Google Patents
Hot briquetting car gives sound insulation and fills up structure Download PDFInfo
- Publication number
- CN206186476U CN206186476U CN201621013468.5U CN201621013468U CN206186476U CN 206186476 U CN206186476 U CN 206186476U CN 201621013468 U CN201621013468 U CN 201621013468U CN 206186476 U CN206186476 U CN 206186476U
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- CN
- China
- Prior art keywords
- layer
- sound
- woven fabrics
- sound wave
- heavy
- 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.)
- Expired - Fee Related
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- 238000009413 insulation Methods 0.000 title claims abstract description 16
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000005030 aluminium foil Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000010009 beating Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 32
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The utility model relates to an automobile parts field, specific hot briquetting car gives sound insulation and fills up structure that says so. Including the non -woven fabrics, heavy matter layer, the light layer, characterized by: the heavy matter layer and the light layer of placing side by side about in the non -woven fabrics there being the parcel lie in the left non -woven fabrics in heavy matter layer and are equipped with the insulating layer outward. Compared with the prior art, the utility model, formed the double wall structure between structure and automobile body panel beating, seen through wall body that characteristic impedance is different completely in proper order, when inhaling the sound medium, caused the multiple reflection of sound wave when the sound wave, the decay of emergence sound wave to because the elasticity and the additional sound absorption effect of sound absorbing layer make vibration energy attenuate greatly. If reach the same defening effect, the double -deck sound -proof wall body reduces 23 - 34 than individual layer solid wall physique volume, and the acoustical reduction coefficient increases by 5 - 10dB, the aluminium foil can be used to the thermal insulation under the high temperature environment simultaneously.
Description
Technical field
The utility model is related to auto parts and components field, specifically a kind of hot-forming auto sound mat structure.
Background technology
At present, the common structure of hot-forming vehicle noise insulation pad is：Surface layer non-woven fabrics+lightweight PU or mineral wool+bottom without
Spin cloth；Trilaminate material is generally 100g/m2 by by surface layer non-woven fabrics grammes per square metre, and bottom non-woven fabrics grammes per square metre is 65g/m2, for low
Grammes per square metre material, defening effect is poor, then is combined sound-absorbing material intermediate layer or 800g/m2 ~ 1200g/m2 glass of 17kg/m3 lightweights PU
The sound-absorbing material intermediate layer of cotton；Under the conditions of 180 DEG C, oil temperature or electrical heating compression molding are formed.
Because the structure is without heavy layer, weight is low, in terms of the NVH sound insulation and noise reductions of automobile, only possesses sound-absorbing effect, reduces
Reverberation of sound, it is impossible to which the effective noise that intercepts is delivered to passenger compartment.
The content of the invention
The utility model designs a kind of hot-forming auto sound mat structure, including nothing to overcome the deficiencies in the prior art
Spinning cloth, heavy layer, light layer, it is characterized in that：Left and right heavy layer and light layer placed side by side, position are enclosed with the non-woven fabrics
Non-woven fabrics on the left of heavy layer is externally provided with thermal insulation layer.
The heavy layer is made up of EVA or EPDM materials.
The light layer is made up of PU materials.
The thermal insulation layer is made up of aluminium foil.
The utility model compared with the existing technology, forms double-wall construction between structure and vehicle body sheet metal, when sound wave successively
During through the entirely different wall of characteristic impedance, sound-absorbing medium, the multiple reflections of sound wave are caused, the decay that sound wave occurs, and
Due to the elastic and additional sound absorption of sound absorbing layer, it is greatly attenuated vibrational energy.It is double if reaching identical defening effect
Layer sound-insulation wall increases by 5-10dB than individual layer solid wall Mass lost 2/3-3/4, oise insulation factor；Aluminium foil can be used for high temperature simultaneously
Being thermally isolated under environment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Referring to Fig. 1, wherein, 1 is non-woven fabrics, and 2 is thermal insulation layer, and 3 is heavy layer, and 4 is light layer.
Specific embodiment
The utility model is described further below according to accompanying drawing.
As shown in figure 1, left and right heavy layer 3 and light layer 4 placed side by side are enclosed with the non-woven fabrics 1, positioned at heavy
The non-woven fabrics 1 in the left side of layer 3 is externally provided with thermal insulation layer 2.
The heavy layer 3 is made up of EVA or EPDM materials.
The light layer 4 is made up of PU materials.
The thermal insulation layer 2 is made up of aluminium foil.
When the utility model is used, parcel heavy layer 3 and light layer 4 in non-woven fabrics 1, and three passes through hot-forming side
Formula is bonded together, and thermal insulation layer 2 is bonded on non-woven fabrics 1 by thermoset film.Then the sound insulating pad that will be molded passes through clamp
It is fixed on metal plate, forms metal plate layer, attractive material layer, the double-wall construction of heavy layer so that sound wave enters from ground floor wall
The transmitted wave spread out of to second layer wall by the attractive material between two walls is penetrated, because incidence wave is by reflection twice and wall
Interior loss, makes sound wave obtain larger decay, so that sound insulation value is greatly improved.
Claims (4)
1. a kind of hot-forming auto sound mat structure, including non-woven fabrics, heavy layer, light layer, it is characterized in that：The non-woven fabrics
（1）Inside it is enclosed with left and right heavy layer placed side by side（3）And light layer（4）, positioned at heavy layer（3）The non-woven fabrics in left side（1）Outward
It is provided with thermal insulation layer（2）.
2. a kind of hot-forming auto sound mat structure as claimed in claim 1, it is characterized in that：The heavy layer（3）By EVA
Or EPDM materials are made.
3. a kind of hot-forming auto sound mat structure as claimed in claim 1, it is characterized in that：The light layer（4）By PU
Material is made.
4. a kind of hot-forming auto sound mat structure as claimed in claim 1, it is characterized in that：The thermal insulation layer（2）By aluminium
Paper tinsel is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013468.5U CN206186476U (en) | 2016-08-31 | 2016-08-31 | Hot briquetting car gives sound insulation and fills up structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013468.5U CN206186476U (en) | 2016-08-31 | 2016-08-31 | Hot briquetting car gives sound insulation and fills up structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206186476U true CN206186476U (en) | 2017-05-24 |
Family
ID=58727966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013468.5U Expired - Fee Related CN206186476U (en) | 2016-08-31 | 2016-08-31 | Hot briquetting car gives sound insulation and fills up structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206186476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249673A (en) * | 2018-09-20 | 2019-01-22 | 无锡吉兴汽车部件有限公司 | A kind of production method of front wall sound insulation pad of automobile driving cabin |
-
2016
- 2016-08-31 CN CN201621013468.5U patent/CN206186476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249673A (en) * | 2018-09-20 | 2019-01-22 | 无锡吉兴汽车部件有限公司 | A kind of production method of front wall sound insulation pad of automobile driving cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 385, Hengyu Road, Wai Gang Town, Jiading District, Shanghai Patentee after: SHANGHAI HUATE ENTERPRISE GROUP CO.,LTD. Address before: No. 1388, Anting Town, Shanghai, Jiading District, Shanghai Patentee before: SHANGHAI HUATE AUTOMOTIVE PARTS Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |