CN204641606U - A kind of structure for improving EPP cushion block abnormal sound on automobile - Google Patents
A kind of structure for improving EPP cushion block abnormal sound on automobile Download PDFInfo
- Publication number
- CN204641606U CN204641606U CN201520258275.5U CN201520258275U CN204641606U CN 204641606 U CN204641606 U CN 204641606U CN 201520258275 U CN201520258275 U CN 201520258275U CN 204641606 U CN204641606 U CN 204641606U
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- epp
- cushion block
- abnormal sound
- fibrofelt
- panel beating
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Abstract
The utility model relates to a kind of structure for improving EPP cushion block abnormal sound on automobile, belongs to automotive trim abnormal sound field of noise control.It comprises face blanket, is provided with fibrofelt liner below the blanket of face, is provided with panel beating below fibrofelt liner, between panel beating and fibrofelt liner, be also provided with EPP foam; The contact surface of described EPP foam and panel beating is provided with layer of non-woven fabric.Described nonwoven surface has uniformly sprayed one deck hot melt adhesive, is combined on EPP foam by Hot melt adhesive plaster.The utility model EPP cushion block surface under existing car carpeting or front wall sound-isolation pad increases the comparatively soft nonwoven fabrics of one deck.After EPP cushion block surface increases nonwoven fabrics, surface becomes flexible relative, when contacting with sheet metal, suitable friction coefficient significantly reduces, when relative sliding occurs under external force for the EPP material and sheet metal that are wrapped in nonwoven fabrics, eliminate Abnormal Sound when EPP material directly contacts with sheet metal.
Description
Technical field
The utility model relates to a kind of structure for improving EPP cushion block abnormal sound on automobile, is specifically related to the structure of abnormal sound problem when a kind of EPP cushion block solved under car carpeting or front wall sound-isolation pad contacts with vehicle body sheet metal, belongs to automotive trim abnormal sound field of noise control.
Background technology
Along with the progress of auto manufacturing technology, people more and more pay close attention to the internal car noise level of manned vehicle, and the traveling comfort that automobile is taken more and more causes care and the attention of people, and the vibration noise performance of automobile and client are to automobile general impression and evaluate directly related.Car carpeting and front wall sound-isolation pad are installed on automobile cab, usually play heat insulation, sound insulation, the effect with practicality attractive in appearance.From acoustic noise reduction angle, car carpeting and front wall sound-isolation pad are used for covering vehicle body sheet metal, play buffer action, also can play sound absorption to the sound in car to the noise be delivered to outside car in car, acoustics parts crucial in car, to the acoustic efficiency of car load also important contribution.
Car carpeting and front wall sound-isolation pad are made up of an aspect blanket and fibrofelt liner usually, this material structure has good acoustic efficiency, apply comparatively general in automobile, but at the position that some vehicle body sheet metal shape chambeies are larger, face blanket and fibrofelt trample poor-performing, (namely after long-time use, can not rebound, part forms pit), therefore, can increase high-foaming polypropylene material (EPP) in the region that vehicle body sheet metal shape chamber is larger, what this can not only improve interior trimming parts tramples performance, can also play good shock absorbing effect.EPP(Expanded polypropylene) i.e. high-foaming polypropylene, it is a kind of high Crystalline plastics composite material of performance brilliance, EPP material has high, the good resistance to effect of heat of response rate, chemicals-resistant, fuel resistance and thermal insulation after very excellent antidetonation energy absorption performance, deformation, in addition, its quality is light, good environmental protection, is the environment-friendly novel resistance to compression buffer compartment hot material of widespread use on automobile.
But EPP materials application in car carpeting or front wall sound-isolation pad lower cushion block time, during the Contact of EPP material and panel beating, the abnormal sound problem of interior trimming parts can be brought, as shown in Figure 2, when client tramples with the carpet of EPP material and front wall sound-isolation pad, easily send the sound of " creak creak ", this abnormal sound (i.e. abnormal sound) directly will have influence on client to the satisfaction of automobile and purchase intention.
Summary of the invention
Abnormal sound problem when the purpose of this utility model is the Contact solving existing EPP material and panel beating.
According to the technical scheme that the utility model provides, a kind of structure for improving EPP cushion block abnormal sound on automobile, comprises face blanket, is provided with fibrofelt liner below the blanket of face, be provided with panel beating below fibrofelt liner, between panel beating and fibrofelt liner, be also provided with EPP foam; The contact surface of described EPP foam and panel beating is provided with layer of non-woven fabric.Described nonwoven surface has uniformly sprayed one deck hot melt adhesive, is combined on EPP foam by Hot melt adhesive plaster.
The beneficial effects of the utility model: the utility model EPP cushion block surface under existing car carpeting or front wall sound-isolation pad increases the comparatively soft nonwoven fabrics of one deck.EPP cushion block surface increases after nonwoven fabrics, and surface becomes flexible relative, and when contacting with sheet metal, suitable friction coefficient significantly reduces, when be wrapped in have slip between the EPP material of nonwoven fabrics and sheet metal time, eliminate the Abnormal Sound of " creak ".
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Abnormal sound principle schematic when Fig. 2 is the Contact of existing EPP material and panel beating.
Detailed description of the invention
As shown in Figure 1: a kind of structure for improving EPP cushion block abnormal sound on automobile, comprises face blanket 1, be provided with fibrofelt liner 2 below face blanket 1, be provided with panel beating 3 below fibrofelt liner 2, between panel beating 3 and fibrofelt liner 2, be also provided with EPP foam 4;
The contact surface of described EPP foam 4 and panel beating 3 is provided with layer of non-woven fabric 5.Described nonwoven fabrics 5 surface density is 100-300g/m
2.
The utility model improve carpet or front wall sound-isolation pad under EPP foam 4, add layer of non-woven fabric 5.Nonwoven fabrics 5 uniformly sprays one deck hot melt adhesive, is then fitted on EPP foam 4, has wrapped up layer of non-woven fabric 5 with requiring EPP foam 4 smooth surface at least contacted with panel beating, can not occur gauffer.After the parcel nonwoven fabrics 5 of EPP foam 4 surface, avoid EPP foam 4 and panel beating 3 Contact, and nonwoven fabrics 5 and sheet metal 3 can be compatible in material, so significantly reduce the friction coefficient between metal and EPP foam 4, eliminate " creak " Abnormal Sound.
Claims (2)
1. one kind for improving the structure of EPP cushion block abnormal sound on automobile, it is characterized in that: comprise face blanket (1), face blanket (1) below is provided with fibrofelt liner (2), fibrofelt liner (2) below is provided with panel beating (3), is also provided with EPP foam (4) between panel beating (3) and fibrofelt liner (2);
The contact surface of described EPP foam (4) and panel beating (3) is provided with layer of non-woven fabric (5).
2., as claimed in claim 1 for improving the structure of EPP cushion block abnormal sound on automobile, it is characterized in that: described nonwoven fabrics (5) surface uniform coat one deck hot melt adhesive, be combined on EPP foam (4) by Hot melt adhesive plaster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258275.5U CN204641606U (en) | 2015-04-24 | 2015-04-24 | A kind of structure for improving EPP cushion block abnormal sound on automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258275.5U CN204641606U (en) | 2015-04-24 | 2015-04-24 | A kind of structure for improving EPP cushion block abnormal sound on automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204641606U true CN204641606U (en) | 2015-09-16 |
Family
ID=54094374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520258275.5U Active CN204641606U (en) | 2015-04-24 | 2015-04-24 | A kind of structure for improving EPP cushion block abnormal sound on automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204641606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263525A (en) * | 2017-07-18 | 2019-01-25 | 宜兴市泰宇汽车零部件有限公司 | Carpet EPP underlay block structure afterwards |
-
2015
- 2015-04-24 CN CN201520258275.5U patent/CN204641606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263525A (en) * | 2017-07-18 | 2019-01-25 | 宜兴市泰宇汽车零部件有限公司 | Carpet EPP underlay block structure afterwards |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |