CN202686213U - Automobile acoustic part - Google Patents
Automobile acoustic part Download PDFInfo
- Publication number
- CN202686213U CN202686213U CN 201220292006 CN201220292006U CN202686213U CN 202686213 U CN202686213 U CN 202686213U CN 201220292006 CN201220292006 CN 201220292006 CN 201220292006 U CN201220292006 U CN 201220292006U CN 202686213 U CN202686213 U CN 202686213U
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- foaming
- spare
- automobile
- acoustic part
- performance
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- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The utility model relates to an automobile acoustic part. The automobile acoustic part comprises a sound insulation layer made from nylon resin, a foaming sound absorption layer made from ethylene-ethylene vinlacetate copolymer or ethylene propylene diene monomer rubber, and a restraint layer made of an aluminum foil and a foaming damping layer made of silicon rubber. The acoustic part is fixed on an inner side of an automobile body metal plate. The sound insulation layer is made from the nylon resin, and the high-temperature resisting performance of the material can meet technological conditions. In addition, the density of the nylon material is small compared with a metal material, and the weight increment range of parts is small while the sound insulation performance of the acoustic part is endowed. Therefore, the whole part can be used in an automobile welding process by means of material selection, and the application positions, the universality and convenience are increased. The automobile acoustic part achieves composite functionalization integrating high-frequency noise absorbency and low-frequency noise damping vibration attenuation through good match and application of several high-performance materials, and is beneficial for improvement of the noise, vibration and harshness (NVH) performance.
Description
Technical field
The utility model relates to technical field of automobile parts, relates in particular to a kind of car acpistocs spare.
Background technology
Noise, vibration and traveling comfort are the integrated technology indexs of weighing the modern automobile manufacture level, and particularly for car, the internal car noise situation is weighed one of major criterion of car class and brand especially.Each large car load manufacturing enterprise of World Automobile Industry and parts enterprises are paid much attention to auto NVH (noise, vibration and sound vibration roughness) performance, and the NVH performance also becomes the important counterweight of the various brands vehicle market competitiveness.
The NVH performance of car load can promote by ACTIVE CONTROL and Passive Control dual mode, and ACTIVE CONTROL is namely controlled from the noise source, comprises improving each parts machining precision and assembly quality, improves engine structure, improves body structure etc.; Passive Control is then from the Body Control angle, to car noise source, soruce of vibration absorb sound, absorbing, sound insulation, vibration damping etc.
For the acoustical material on the vehicle body position, the consumption effect of pair panel beating vibrational energy should be arranged, need again to have the obstruct sorption to panel beating vibration radiation noise and Che Nei reverberation noise, common this acoustic treatment need to be used the common cooperation of the sound absorption and insulation material on panel beating damping material and the interior trimming parts and finish, therefore, it is significant developing a kind of self-supporting body acoustical material, it is by parts, when playing good comprehensive acoustics effect, simplified the installation procedure on vehicle body, saved productive costs, can Effective Raise production efficiency, reduced the risk ratio that parts lost efficacy.
Chinese patent notification number CN 201412209 Y, February 24 2010 day for announcing, name is called automotive muffler, this application case discloses a kind of automotive muffler, comprise housing, be welded on the air inlet pipe on the described housing, freeing pipe and the dividing plate with holes that is contained in the described housing, described dividing plate has three, the part of described freeing pipe in described housing passed described three dividing plates, the end of described air inlet pipe in housing passes first successively along airintake direction, second dividing plate, and be connected with the 3rd dividing plate, and be provided with as the breach of giving vent to anger at the tube wall of coupling end.Its weak point is, although can noise reduction, can not reach the effect of vibration damping.
The utility model content
The purpose of this utility model is, for solve existing silencer can only noise reduction can not vibration damping defective and provide a kind of both can noise reduction can vibration damping car acpistocs spare.
To achieve these goals, the utility model is by the following technical solutions:
A kind of car acpistocs spare, the foaming absorbent treatment that described acoustics spare comprises the pugging made by nylon resin, made by ethylene-vinyl acetate copolymer or ethylene propylene diene rubber, by the aluminium foil restraint layer of making and the foaming damping layer of being made by silastic material, described acoustics spare is fixed on the vehicle body sheet metal inboard.In the technical program, acoustics spare is mainly used in reducing vibration and the noise at vehicle body sheet metal position, realized the dual acoustics effect of global facility to low frequency and high frequency, both had the good weakening effect to medium high frequency reverberation noise in the car, had again the weakening effect to the low-frequency noise of vehicle body sheet metal vibration and vibration radiation generation.In damping layer material, the application of foamed silastic material has replaced traditional pitch damping material and butyl damping material, compares with asphalt material, the damping capacity of silaatic is with the obvious advantage, in addition, from the callable angle analysis of environmental protection, elastomeric material has advantage than asphalt material; Compare with the butyl rubber material, the damping factor numerical value of silaatic is higher, and material is stronger to the weakening effect of vibrational energy.In addition, the resistance to heat of silaatic is good, and after can avoiding using other damping materials, global facility is behind the electrophoresis baking process, and material property wears out even decomposes the performance failure situation that causes.Be mixed with foaming agent in the silastic material, when integral material was met heat foamable, silaatic formed aerated materials, having the colleague of shock damping action, also has sound absorption concurrently.And the performance of parts sound absorbing capabilities effect mainly is to realize by the ethylene-vinyl acetate copolymer or the foaming and intumescing of ethylene propylene diene rubber behind high-temperature baking that mix foaming agent, foaming and intumescing by sound-absorbing material, damping material is fitted on the vehicle body sheet metal closely, thus the performance damping vibration attenuation function.Pugging adopts nylon resin, and the resistance to elevated temperatures of material can satisfy technological condition, and with respect to metallic material, the density of nylon material is little, and is when giving acoustics spare sound insulation property, little to the weight increasing degree of parts.Such material selection can make global facility use in vehicle is welded operation, has increased application site and popularity and comfort feature.This usefulness novel acoustic spare has realized that by the good fit application of several high performance materials global facility integrates the Complex Function of high frequency noise absorptivity and low-frequency noise damping vibration attenuation, more is of value to the NVH performance that promotes car load.
As preferably, described acoustics spare sticks on the vehicle body sheet metal inboard by epoxy adhesive.In the technical program, by epoxy adhesive acoustics spare is bonded in the vehicle body sheet metal inboard, convenient and practical.
As preferably, the thickness of pugging is 3-5mm, and the thickness of restraint layer is 0.4-0.8mm.In the technical program, the thickness of pugging is 3-5mm, and Main Function is for noise reduction, and the thickness of restraint layer is 0.4-0.8mm, restraint layer thinner thickness, the stickup of be convenient to foam absorbent treatment and foaming damping layer.
The beneficial effects of the utility model are, pugging adopts nylon resin, and the resistance to elevated temperatures of material can satisfy technological condition, and with respect to metallic material, the density of nylon material is little, and is when giving acoustics spare sound insulation property, little to the weight increasing degree of parts.Such material selection can make global facility use in vehicle is welded operation, has increased application site and popularity and comfort feature.The utility model has realized that by the good fit application of several high performance materials global facility integrates the Complex Function of high frequency noise absorptivity and low-frequency noise damping vibration attenuation, more is of value to the NVH performance that promotes car load.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure, 1, acoustics spare; 2, vehicle body sheet metal; 3, pugging; 4, foaming absorbent treatment; 5, restraint layer; 6, foaming damping layer.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing, the utility model is further explained:
With reference to Fig. 1, a kind of car acpistocs spare, the foaming absorbent treatment 4 that described acoustics spare 1 comprises the pugging 3 made by nylon resin, made by ethylene-vinyl acetate copolymer, by the aluminium foil restraint layer 5 of making and the foaming damping layer 6 of being made by silastic material, described acoustics spare 1 is fixed on vehicle body sheet metal 2 inboards.Described acoustics spare 1 sticks on vehicle body sheet metal 2 inboards by epoxy adhesive.The thickness of pugging 3 is 3mm, and the thickness of restraint layer 5 is 0.4mm.
Damping sound absorption part uses in the operation that is welded of vehicle, stick on the vehicle body sheet metal by the lip-deep epoxyn of edge-of-part metal aluminum foil, then in car body electrophoretic technique, expanded material in the parts is expanded foamed, foaming damping material in the parts is fitted on the vehicle body sheet metal, thereby play good acoustics effect.The material of pugging is nylon resin, and thickness is 3mmmm, and material is by the Shooting Technique moulding.The foaming sound absorbing material layer is ethylene-vinyl acetate copolymer, it sticks on nylon material layer surface by epoxyn, material half finished rubber attitude in the form of sheets, be mixed with foaming agent in the material of main part, when temperature reaches 180 ℃, the complete foaming and intumescing of material, the expansion multiplying power of material is 20%, the expansion ratio of material and thickness can be adjusted arbitrarily according to actual needs, form porous material after material expands, in order to absorb reverberation noise and panel beating vibration radiation noise in the car.The surface of foaming absorbent treatment is restraint layer, material is metal aluminum foil, thickness is 0.4mm, it is bonded in foaming sound absorbing material layer surface by epoxyn, another surface of metal aluminum foil is by epoxyn bonding foaming damping layer silastic material, thickness before the foaming of foamed silastic material is 1mm, the foaming damping layer is in whole acoustics spare application process, after owing to be heated, the foaming and intumescing of foaming absorbent treatment and the foaming and intumescing of damping material itself, impact in conjunction with pugging and restraint layer, limited the expansion direction of material, foamed silastic material and vehicle body sheet metal are fitted, because combining closely of elastomeric material and vehicle body surface of steel plate, add the effect of aluminum foil metal restraint layer, when vehicle body steel plate excited target is vibrated, cut down the vibrational energy of steel plate, when the vehicle body steel plate vibrates, the macromolecular chain of rubber produces motion, rubber produces repeatedly repeated deformation and (stretches, compression, shear etc.) and make system change a part of elastic energy into irreversible heat energy dissipation, thus reach the purpose of damping vibration attenuation.
Claims (3)
1. car acpistocs spare, it is characterized in that, the foaming absorbent treatment (4) that described acoustics spare (1) comprises the pugging (3) made by nylon resin, made by ethylene-vinyl acetate copolymer or ethylene propylene diene rubber, by the aluminium foil restraint layer (5) of making and the foaming damping layer (6) of being made by silastic material, described acoustics spare (1) is fixed on vehicle body sheet metal (2) inboard.
2. a kind of car acpistocs spare according to claim 1 is characterized in that, described acoustics spare (1) sticks on vehicle body sheet metal (2) inboard by epoxy adhesive.
3. according to claim 1 and 2 or 3 described a kind of car acpistocs spares, it is characterized in that the thickness of pugging (3) is 3-5mm, the thickness of restraint layer (5) is 0.4-0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292006 CN202686213U (en) | 2012-06-20 | 2012-06-20 | Automobile acoustic part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292006 CN202686213U (en) | 2012-06-20 | 2012-06-20 | Automobile acoustic part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202686213U true CN202686213U (en) | 2013-01-23 |
Family
ID=47541871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292006 Expired - Fee Related CN202686213U (en) | 2012-06-20 | 2012-06-20 | Automobile acoustic part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202686213U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739355A (en) * | 2017-03-16 | 2017-05-31 | 天津市浩迪橡塑科技有限公司 | Composite Hollow sound-absorbing material structural damping plate and preparation method thereof |
| CN108648743A (en) * | 2018-04-25 | 2018-10-12 | 上海交通大学 | Sheet acoustics black hole energy accumulator group device |
| WO2022215686A1 (en) * | 2021-04-06 | 2022-10-13 | 日本製鉄株式会社 | Composite, automotive component, composite unit, and method for producing composite |
-
2012
- 2012-06-20 CN CN 201220292006 patent/CN202686213U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739355A (en) * | 2017-03-16 | 2017-05-31 | 天津市浩迪橡塑科技有限公司 | Composite Hollow sound-absorbing material structural damping plate and preparation method thereof |
| CN106739355B (en) * | 2017-03-16 | 2018-08-10 | 天津市浩迪橡塑科技有限公司 | Composite Hollow sound-absorbing material structural damping plate and preparation method thereof |
| CN108648743A (en) * | 2018-04-25 | 2018-10-12 | 上海交通大学 | Sheet acoustics black hole energy accumulator group device |
| CN108648743B (en) * | 2018-04-25 | 2020-07-28 | 上海交通大学 | Sheet acoustic black hole energy harvester device |
| WO2022215686A1 (en) * | 2021-04-06 | 2022-10-13 | 日本製鉄株式会社 | Composite, automotive component, composite unit, and method for producing composite |
| JPWO2022215686A1 (en) * | 2021-04-06 | 2022-10-13 | ||
| JP7488501B2 (en) | 2021-04-06 | 2024-05-22 | 日本製鉄株式会社 | Composite, automobile part, composite unit, and method for manufacturing the composite |
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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: 20130123 Termination date: 20200620 |