CN201816649U - Car roof - Google Patents
Car roof Download PDFInfo
- Publication number
- CN201816649U CN201816649U CN2010205352428U CN201020535242U CN201816649U CN 201816649 U CN201816649 U CN 201816649U CN 2010205352428 U CN2010205352428 U CN 2010205352428U CN 201020535242 U CN201020535242 U CN 201020535242U CN 201816649 U CN201816649 U CN 201816649U
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- China
- Prior art keywords
- layer
- vibration damping
- vibration
- sound absorption
- sound absorbing
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- 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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- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The utility model relates to the field of car bodies, in particular to a car roof capable of reducing vibration and absorbing sound. The car roof comprises a covering plate and a vibration reduction and sound absorption layer, the vibration reduction and sound absorption layer which is a double-layered structure consists of a vibration reduction layer and a sound absorption layer, the sound absorption layer is adhered with the vibration reduction layer, the other surface of the vibration reduction layer is adhered with the covering plate and is made from asphaltic base materials, the sound absorption layer is made from propene polymer +polyethylene terephthalate (PP+PET) fibers, and the vibration reduction and sound absorption layer simultaneously has vibration reduction and sound absorption functions, thereby reducing noises of the covering plate of the car roof and an integral car and increasing car taking comfort level. The vibration reduction and sound absorption layer which is the double-layered structure consists of the vibration reduction layer and the sound absorption layer, the vibration reduction layer can reduce vibration generated by the covering plate, and the sound absorption layer can absorb the noises generated due to vibration.
Description
Technical field
The utility model relates to the motorcar body field, a kind of car roof that especially can the vibration damping sound-absorbing.
Background technology
Car roof is a large-scale covering, the big and thinner thickness of cladding plate area; Reasons such as vibration that produces when travelling owing to car and air damping cause the cladding plate vibration and produce noise, influence the car comfort level; The utility model of patent No. ZL200720124392.8 discloses a kind of car roof structure, employing adds a crossbeam at the car roof middle part, the crossbeam two ends are connected with the covering at top cover top, both sides with attaching parts, the bonded assembly method of crossbeam top and cladding plate makes the car roof cladding plate become the part than a young waiter in a wineshop or an inn, strengthen car roof cladding plate rigidity, cladding plate produced vibration when the minimizing car travelled, thereby noise is reduced; Its weak point is: crossbeam is a rigid material, does not have the absorbing effect, so car roof minimizing noise result is not ideal enough, and installs complicated.
The utility model content
The purpose of this utility model is in order to overcome reasons such as the vibration that produces when travelling owing to car and air damping, causes the vibration of car roof cladding plate and produces the deficiency of noise, provides a kind of simple in structure, car roof that can the vibration damping sound-absorbing.
Concrete technical scheme of the present utility model is:
A kind of car roof comprises cladding plate, and described a kind of car roof comprises the vibration damping sound absorbing layer, captives joint between described vibration damping sound absorbing layer and cladding plate.Be provided with between vibration damping sound absorbing layer and cladding plate and captive joint, simple in structure, strengthened the rigidity of car roof cladding plate, and because the vibration damping sound absorption that the vibration damping sound absorbing layer has, the vibration that reasons such as vibration that produces when the car roof cladding plate is travelled owing to car and air damping produce cladding plate is weakened, the noise that produces is absorbed, thereby the vibration of car roof, noise are reduced; Because vibration damping sound absorbing layer area is bigger, can also absorb in the car other noise, the ride quality of car is improved.
As preferably, described vibration damping sound absorbing layer is provided with vibration damping layer, sound absorbing layer; Described sound absorbing layer and vibration damping interlayer are bonding, and be bonding between described vibration damping layer another side and cladding plate.Described vibration damping sound absorbing layer is the double-layer structural of being made up of vibration damping layer, sound absorbing layer, overcome present automobile vibration reduction and the sound absorption materials effect is single, the cushioning performance of sound absorption materials is bad, and the sound absorption of damping material is relatively poor, the deficiency that vibration damping and sound absorption can not take into account; The vibration damping layer of vibration damping sound absorbing layer can reduce the vibration that cladding plate produces, and sound absorbing layer can absorb the noise that produces because of vibration; Described vibration damping sound absorbing layer has had vibration damping and sound absorption function simultaneously concurrently.
As preferably, described vibration damping sound absorbing layer size equates with cladding plate.The size that strengthens the vibration damping sound absorbing layer can strengthen the effect of sound-absorbing, and it is better to cover the cladding plate effect fully.
As preferably, described vibration damping layer is an asphalt-based material; Described sound absorbing layer is the PP+PET fiber.With car roof cladding plate bonded assembly material be asphalt-based material, the thickness of material is 1.5mm to 3mm; Mainly acting as of asphalt-based material suppresses the low-frequency vibration that car roof cladding plate excited target produces; When the car roof cladding plate vibrated, the macromolecular chain of pitch produced motion, thus produce repeatedly repeated deformation as: stretching, compression, shearing etc. make a part of elastic energy change irreversible heat energy dissipation into, thereby reach the purpose of damping vibration attenuation; In addition, when asphalt-based material was subjected to vibration that strain takes place, helping in the asphalt-based material, increased the shear deformation of interlayer poly-mer, limited the activity in the mutual transition process of molecule long-chain, strengthened the conversion of energy, improved the damping force characteristics of material; On the other hand, the frictional heat of non-metal powder is the Fundamentals that damping is worked most, and in glass transition region, the internal friction effect between filler and poly-mer and the filler increases with the aggravation of molecular motion, thereby has improved the damping value of material; The PET+PP fiber is by special technology, is formed by polypropylene fibre and polyster fibre blending manufacturing, is made up of superfine fibre, has solid netted continuous poriferous structure, and the fiber average fineness can reach below 1～2 micron.Special material internal structure helps the consumption of acoustic wave energy, so the sound-absorbing effect excellence is absorbed the noise that produces because of the vibration of car roof cladding plate; The PP+PET fiber quality is light, and smell is little, can reclaim; The double-layer structural of vibration damping sound absorbing layer utilizes the notable difference of two layers of material density, forms density gradient, increased the flow resistance of sound wave by whole layer material, further promote the vibration damping sound absorption qualities, thereby reduced the noise of car roof cladding plate and entire car, improved the comfort level that car is taken.
The beneficial effects of the utility model are:
The setting of vibration damping sound absorbing layer, vibration damping and sound absorption function have been had simultaneously concurrently, thereby reduce the noise of car roof cladding plate and entire car, improved the comfort level that car is taken, the vibration damping sound absorbing layer is the double-layer structural of being made up of vibration damping layer, sound absorbing layer, the vibration damping layer can reduce the vibration that cladding plate produces, and sound absorbing layer can absorb the noise that produces because of vibration.
The size that strengthens the vibration damping sound absorbing layer can strengthen the effect of sound-absorbing, and it is better to cover the cladding plate effect fully.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the birds-eye view of Fig. 1.
?
The specific embodiment
Below in conjunction with shown in the accompanying drawing the utility model is described further.
Shown in accompanying drawing 1, accompanying drawing 2: a kind of car roof comprises cladding plate 1, vibration damping sound absorbing layer 2; Described vibration damping sound absorbing layer size equates with cladding plate; Described vibration damping sound absorbing layer is provided with vibration damping layer 21, sound absorbing layer 22; Described vibration damping layer is the asphalt-based material of thickness 2mm; Described sound absorbing layer is the PP+PET fiber; Described sound absorbing layer and vibration damping interlayer use acrylate adhesive bonding, use acrylate adhesive bonding between described vibration damping layer another side and cladding plate;
Be provided with between vibration damping sound absorbing layer energy and cladding plate bonding, simple in structure, strengthened the rigidity of car roof cladding plate, and because the vibration damping sound absorption that the vibration damping sound absorbing layer has, the vibration that reasons such as vibration that produces when the car roof cladding plate is travelled owing to car and air damping produce cladding plate is weakened, the noise that produces is absorbed, thereby the vibration of car roof, noise are reduced; Because vibration damping sound absorbing layer area is bigger, can also absorb in the compartment other noise, the ride quality of car is improved.Described vibration damping sound absorbing layer is the double-layer structural of being made up of vibration damping layer, sound absorbing layer, overcome present automobile vibration reduction and the sound absorption materials effect is single, the cushioning performance of sound absorption materials is bad, and the sound absorption of damping material is relatively poor, the deficiency that vibration damping and sound absorption can not take into account; The vibration damping layer of vibration damping sound absorbing layer reduces the vibration that cladding plate produces, and sound absorbing layer absorbs the noise that produces because of vibration; Described vibration damping sound absorbing layer has had vibration damping and sound absorption function simultaneously concurrently.Described vibration damping sound absorbing layer size equates that with cladding plate the size that strengthens the vibration damping sound absorbing layer can strengthen the effect of sound-absorbing.Described vibration damping layer mainly act as and suppresses the low-frequency vibration that car roof cladding plate excited target produces for thickness is the asphalt-based material of 2mm; When the car roof cladding plate vibrated, the macromolecular chain of pitch produced motion, thus produce repeatedly repeated deformation as: stretching, compression, shearing etc. make a part of elastic energy change irreversible heat energy dissipation into, thereby reach the purpose of damping vibration attenuation; In addition, when asphalt-based material was subjected to vibration that strain takes place, the non-metal powder in the asphalt-based material helped to increase the shear deformation of interlayer poly-mer, has limited the activity in the mutual transition process of molecule long-chain, strengthen the conversion of energy, improved the damping force characteristics of material; On the other hand, the frictional heat of non-metal powder filler is the Fundamentals that damping is worked most, and in glass transition region, the internal friction effect between filler and poly-mer and the filler increases with the aggravation of molecular motion, thereby has improved the damping value of material; Described sound absorbing layer is the PP+PET fiber; Described PET+PP fiber is by special technology, is formed by polypropylene fibre and polyster fibre blending manufacturing, is made up of superfine fibre, has solid netted continuous poriferous structure, and the fiber average fineness can reach below 1～2 micron; Special material internal structure helps the consumption of acoustic wave energy, so the sound-absorbing effect excellence is absorbed the noise that produces because of the vibration of car roof cladding plate; The PP+PET fiber quality is light, and smell is little, can reclaim; The double-layer structural of vibration damping sound absorbing layer utilizes the notable difference of two layers of material density, forms density gradient, increased the flow resistance of sound wave by whole layer material, further promote the vibration damping sound absorption qualities, thereby reduced the noise of car roof cladding plate and entire car, improved the comfort level that car is taken.
Claims (5)
1. a car roof comprises cladding plate, it is characterized in that: described a kind of car roof also comprises the vibration damping sound absorbing layer, captives joint between described vibration damping sound absorbing layer and cladding plate.
2. a kind of car roof according to claim 1 is characterized in that: described vibration damping sound absorbing layer comprises vibration damping layer, sound absorbing layer; Described sound absorbing layer and vibration damping interlayer are bonding, and be bonding between described vibration damping layer and cladding plate.
3. a kind of car roof according to claim 1 and 2 is characterized in that: described vibration damping sound absorbing layer size equates with cladding plate.
4. a kind of car roof according to claim 1 and 2 is characterized in that: described vibration damping layer is an asphalt-based material; Described sound absorbing layer is the PP+PET fiber.
5. a kind of car roof according to claim 3 is characterized in that: described vibration damping layer is an asphalt-based material; Described sound absorbing layer is the PP+PET fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205352428U CN201816649U (en) | 2010-09-20 | 2010-09-20 | Car roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205352428U CN201816649U (en) | 2010-09-20 | 2010-09-20 | Car roof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201816649U true CN201816649U (en) | 2011-05-04 |
Family
ID=43914613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205352428U Expired - Fee Related CN201816649U (en) | 2010-09-20 | 2010-09-20 | Car roof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201816649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424941A (en) * | 2013-09-05 | 2015-03-18 | 上海泰瑞电子科技有限公司 | Sound absorption material and preparation method thereof |
| CN106828610A (en) * | 2016-12-16 | 2017-06-13 | 韩进 | Automobile lamina tecti |
-
2010
- 2010-09-20 CN CN2010205352428U patent/CN201816649U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424941A (en) * | 2013-09-05 | 2015-03-18 | 上海泰瑞电子科技有限公司 | Sound absorption material and preparation method thereof |
| CN104424941B (en) * | 2013-09-05 | 2018-04-03 | 上海泰瑞电子科技有限公司 | A kind of sound-absorbing material and preparation method thereof |
| CN106828610A (en) * | 2016-12-16 | 2017-06-13 | 韩进 | Automobile lamina tecti |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20130920 |