CN203637729U - Vibration reducing and sound absorbing pad for automotive bumper - Google Patents
Vibration reducing and sound absorbing pad for automotive bumper Download PDFInfo
- Publication number
- CN203637729U CN203637729U CN201320691522.1U CN201320691522U CN203637729U CN 203637729 U CN203637729 U CN 203637729U CN 201320691522 U CN201320691522 U CN 201320691522U CN 203637729 U CN203637729 U CN 203637729U
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- absorbing pad
- sound
- sound absorbing
- vibration reducing
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Abstract
The utility model discloses a vibration reducing and sound absorbing pad for an automotive bumper. The vibration reducing and sound absorbing pad is divided into a top layer, a middle layer and a bottom layer. The vibration reducing and sound absorbing pad is characterized in that the top layer adopts a foamed silica gel plate; the middle layer is a sound absorbing layer which is divided into three layers; the middle layer is a high-damping vibration reducing rubber layer; PET fiber layers made of water-repellency fibers are arranged on two sides of the high-damping vibration reducing rubber layer; the bottom layer adopts an aluminum foil as a heat insulating layer; the top layer is bonded to the middle layer and the middle layer is bonded to the bottom layer by adopting flame retardant glue.
Description
Technical field
the utility model relates to automobile manufacturing field, particularly a kind of vibration damping sound-absorbing pad of Federal bumper.
Background technology
along with social development, automobile becomes the traffic means of transport that people are indispensable.Automobile is the complex combination formula noise source of a high-speed motion.The vibrations that produce when automotive engine and driving system work, the effect of middle motor tire rolling, vehicle body and the air on the ground of running at high speed are the basic reasons that produces car noise.Car noise main source is divided into by position: engine noise, tire noise, wind noise; Can be divided into by route of transmission: structureborne noise, noise of air, sympathetic response noise.
sound absorption materials not in most Federal bumper, and bumper/spoiler present position environment is severe, high temperature, water stain more, because the sound absorption factor of aerated materials is subject to the impact of temperature, humidity, while use under high temperature or cryogenic conditions, the velocity of sound changing because of temperature traverse will cause the change of wave length of sound, thereby the sound absorption frequency-response data of material is relatively moved, and its variation tendency is generally that temperature improves, and sound absorption characteristics move to high frequency direction; Temperature reduces, and sound absorption characteristics move to low frequency direction.Humidity also has considerable influence to the sound absorbing capabilities of material, the intrapore aqueous ingredients of material increases the reduction that has caused pore-solids ratio, along with increasing of aqueous ingredients, first the coefficient of sound-absorption that is high-frequency range declines, when aqueous ingredients continues to increase, incidence is expanded to low frequency region thereupon, easily causes product failure.
this has just caused the noise of bumper/spoiler to be delivered in compartment by car body, and boot cavity resonance is large, makes noise transmission arrive car inside, affects ride-on vehicles comfort.
Utility model content
the noise existing for above-mentioned driving engine, the utility model adopts a kind of vibration damping sound-absorbing pad for Federal bumper, is divided into top layer, interlayer and bottom, it is characterized in that described top layer adopts foamed silica gel plate; Described interlayer is sound absorbing layer, and described sound absorbing layer is divided into three layers, and centre is high damping vibration attenuation rubber layer, and high damping vibration attenuation rubber layer both sides are to refuse the PET fibrage that water cellulose is made; Described bottom adopts aluminium foil as thermal insulation layer; Between described top layer and interlayer, interlayer and bottom, adopt fire retardant glue bonding.
further, in the vibration damping sound-absorbing pad of described Federal bumper, PET fiber layer thickness, between 17mm and 50mm, can be filled re-entrant portion effectively.
further, the water cellulose of refusing in the vibration damping sound-absorbing pad of described Federal bumper is 0.89dtex, and product pore-solids ratio is high, can promote absorption noise performance, effectively solves noise reso-nance problems.
further, after the vibration damping sound-absorbing pad bottom of described Federal bumper, be provided with gum layer, can directly vibration damping sound-absorbing pad be sticked on Federal bumper to easy construction.
adopt the technical program to have following beneficial effect:
(1) use bumper/spoiler to lay vibration damping sound-absorbing pad, can reduce body vibrations, absorb because of body vibrations generation noise.Sound-absorbing porous material has the minim gap that is interlinked to the outside in many and hole continuously, in the time that sound wave incides material surface, a part reflects at material surface, when a part enters material internal along pore, cause air vibration in hole, produce friction with hole wall, effect near the air of hole wall and fiber surface because of friction force and viscous force, make quite a few acoustic energy be converted into heat energy and be consumed, make acoustic attenuation, reflective sound wave weakens and reaches sound-absorbing effect.
(2) the PET fibrage of damping sound-absorbing pad sound absorbing layer itself, not containing additive, accomplish 100% recyclable recycling, and this product is environment friendly and pollution-free.
(3) use and detest the PET fibrage that water cellulose is made, employing is refused water cellulose and is made, make fiber itself just there is the water of detesting characteristic, can adapt to better harsh environment in Vehicle Driving Cycle process, product uses ultra-fine 0.89 dtex fiber heat bonding to make simultaneously, has better lapping level, has increased space, make noise in the process being delivered in car body, have more path to transform and absorb noise.
Brief description of the drawings
fig. 1 is the utility model structural representation;
fig. 2 is that the utility model uses state (front bumper) schematic diagram;
in its figure: 1-foamed silica gel plate; 2-PET fibrage 1; 3-high damping vibration attenuation rubber layer; 4-PET fibrage 2; 5-aluminium foil layer; 6-gum layer; 7-bumper/spoiler housing; 8-vibration damping sound-absorbing pad; 9-bumper/spoiler deep beam; 10-connecting panel.
Detailed description of the invention
the utility model illustrates specific implementation method using Fig. 1 as most preferred embodiment:
for a vibration damping sound-absorbing pad for Federal bumper, be divided into top layer, interlayer and bottom as shown in Figure 1, it is characterized in that described top layer adopts foamed silica gel plate 1; Described interlayer is sound absorbing layer, and described sound absorbing layer is divided into three layers, and centre is high damping vibration attenuation rubber layer 3, and high damping vibration attenuation rubber layer both sides are to refuse the PET fibrage 2,4 that water cellulose is made; Described bottom adopts aluminium foil layer 5 as thermal insulation layer; Between described top layer and interlayer and bottom, adopt fire retardant glue bonding.
and this vibration damping sound-absorbing pad light weight, lightweight is the megatrend of whole automobile manufacturing field development, can not increase too many vehicle body deadweight, thereby reduced oil consumption after construction.Adopt aluminium foil layer 5 as thermal insulation layer, can effectively stop external heat transmission, install and use procedure in cracky not, be difficult for agingly, weather resistance is good, long service life.At bottom--after aluminium foil layer, be laid with gum layer 6.When installation, can directly vibration damping sound-absorbing pad 8 be torn to gum layer 6 is applied on bumper/spoiler deep beam 9.Cracky not in use procedure, be difficult for aging, long service life.
adopt foamed silica gel plate 1 as top layer, this foamed silica gel plate softness, nonflammable, waterproof, deadweight are moderate, environmental protection, and soundproof effect and damping effect are good, long service life.
the foregoing is only a preferred embodiment of the present utility model; can not limit protection domain of the present utility model with it; the utility model also can have other structural change; as long as the equalization of doing according to protection domain of the present utility model changes and modifies, all should belong in the scope that the utility model contains.
Claims (4)
1. for a vibration damping sound-absorbing pad for Federal bumper, be divided into top layer, interlayer and bottom, it is characterized in that described top layer adopts foamed silica gel plate; Described interlayer is sound absorbing layer, and described sound absorbing layer is divided into three layers, and centre is high damping vibration attenuation rubber layer, and high damping vibration attenuation rubber layer both sides are to refuse the PET fibrage that water cellulose is made; Described bottom adopts aluminium foil as thermal insulation layer; Between described top layer and interlayer, interlayer and bottom, adopt fire retardant glue bonding.
2. the vibration damping sound-absorbing pad for Federal bumper as claimed in claim 1, is characterized in that described PET fiber layer thickness is between 17mm and 50mm.
3. the vibration damping sound-absorbing pad for Federal bumper as claimed in claim 1, is characterized in that the water cellulose of refusing in described PET fibrage is 0.89dtex.
4. the vibration damping sound-absorbing pad for Federal bumper as claimed in claim 1, is characterized in that being laid with gum layer after described thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691522.1U CN203637729U (en) | 2013-11-05 | 2013-11-05 | Vibration reducing and sound absorbing pad for automotive bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691522.1U CN203637729U (en) | 2013-11-05 | 2013-11-05 | Vibration reducing and sound absorbing pad for automotive bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203637729U true CN203637729U (en) | 2014-06-11 |
Family
ID=50868997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320691522.1U Expired - Fee Related CN203637729U (en) | 2013-11-05 | 2013-11-05 | Vibration reducing and sound absorbing pad for automotive bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203637729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331119A (en) * | 2015-12-08 | 2016-02-17 | 苏州市享乐惠信息科技有限公司 | Novel foamed silica gel plate |
-
2013
- 2013-11-05 CN CN201320691522.1U patent/CN203637729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331119A (en) * | 2015-12-08 | 2016-02-17 | 苏州市享乐惠信息科技有限公司 | Novel foamed silica gel plate |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20211105 |