CN108248695A - A kind of front wall board of automobile assembly - Google Patents
A kind of front wall board of automobile assembly Download PDFInfo
- Publication number
- CN108248695A CN108248695A CN201810090013.0A CN201810090013A CN108248695A CN 108248695 A CN108248695 A CN 108248695A CN 201810090013 A CN201810090013 A CN 201810090013A CN 108248695 A CN108248695 A CN 108248695A
- Authority
- CN
- China
- Prior art keywords
- puigging
- cavity
- automobile
- front wall
- substrate
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/082—Engine compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0815—Acoustic or thermal insulation of passenger compartments
- B60R13/0823—Insulating partitions, e.g. between front and rear seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of front wall board of automobile assemblies, positioned at automotive interior, the engine of automobile is located at the side of antetheca harden structure, the driver's cabin of automobile is located at the opposite side of antetheca harden structure, including front panel ontology, the first puigging, the second puigging and third puigging, first puigging is fitted in the side of the second puigging, and third puigging is fitted in the opposite side of the second puigging；First puigging, the second puigging and third puigging are respectively positioned on front panel ontology close to the side of driver's cabin；Second puigging has equally distributed cavity.The present invention has decrease of noise functions, can stop most of noise of automobile engine, prevents from passing to automobile cab, drives to experience so as to improve user.Three layers of puigging are set in antetheca harden structure, wherein, intermediate one layer of puigging has the cavity for playing deadening, coordinates the puigging of both sides can play significant deadening.Compare after testing, more than 31% soundproof effect can be improved.
Description
Technical field
The present invention relates to a kind of front wall board of automobile assemblies, belong to Truck Frame Structure technical field.
Background technology
Front panel refers to the partition board between enging cabin and compartment, it and floor, front column couple, mounted on front wall upper cover
Under plate.There are many apertures in front panel, as the bracing wire of manipulation, pull rod, pipeline and wirning harness by being used, also to coordinate
The parts installation site such as column is asked by pedal, side.
At present, as the regulation of noise abatement is more and more stringenter and user requires the comfort of interior acoustic enviroment
It being continuously improved, Automobile Enterprises are paid more attention to from starting to achieve the purpose that vibration and noise reducing in design, auto NVH (Noise,
Vibration andHarshness) performance become evaluation vehicle performance a significant design index.Auto NVH research relates to
And many components, front wall board of automobile are wherein piths, its damping property directly influences the comfort of driving, to antetheca
Plate carries out Vibration Absorption Designing research can provide significant help for structure optimization.
Invention content
The object of the present invention is to provide a kind of front wall board of automobile assemblies, have decrease of noise functions, can stop car engine
Most of noise of machine, prevent from passing to automobile cab, drives to experience so as to improve user.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of front wall board of automobile assembly, positioned at automotive interior, the engine of automobile is located at the side of antetheca harden structure, automobile
Driver's cabin be located at the opposite side of antetheca harden structure, including rubber sealant, front panel ontology, the first puigging, the second sound insulation
Layer and third puigging, rubber sealant are fitted on front panel ontology, are had between rubber sealant and front panel ontology close
The cavity of envelope, rubber sealant are fitted on front panel ontology close to the side of automobile engine；First puigging is fitted in
The side of two puiggings, third puigging are fitted in the opposite side of the second puigging；First puigging, the second puigging and third
Puigging is respectively positioned on front panel ontology close to the side of driver's cabin；Second puigging has equally distributed cavity.It is every to use
It blocks the material of noise, is referred to as acoustic material.Acoustic material is multifarious, daily people it is relatively common have solid brick
Block, reinforced concrete wall, plank, plasterboard, iron plate, deadening felt, fiberboard etc..In a strict sense, almost all of material
Material all has deadening, and difference is exactly the of different sizes of sound transmission loss between different materials.Same material, since face is close
Degree is different, and there are bigger variations for sound transmission loss.Sound transmission loss follows mass law principle, be exactly acoustic material unit it is intensive
Surface density is bigger, and sound transmission loss is bigger, and surface density is proportional with sound transmission loss.Rubber sealant is made of both primarily serving
With, on the one hand it is to form the cavity with front panel body fits, plays the role of reducing noise, action principle and firearms
Muffler is identical, and when sound wave is after the medium of different materials, only a small amount of sound wave can pass through, between medium density contrast away from
Bigger, noise elimination effect is better；On the other hand play the role of damping, so the making material of rubber sealant has selected rubber.
Preferably, the cavity thickness between rubber sealant and front panel ontology is more than or equal to 2 millimeters, and less than or equal to 4
Millimeter, can be supported between rubber sealant and front panel ontology by reinforcing rib.
Acoustic material physically has certain elasticity, and when sound wave incident, just excited vibrational is propagated in interlayer.Work as sound wave
It is not vertical incidence, but during θ incidence at an angle with interlayer, acoustic wavefront reaches interlayer surface successively, and arrives first interlayer
Bending vibration wave is laterally propagated along interlayer in sound wave excitation interlayer, if in bending velocity of wave propagation and air sound wave reach gradually every
When the gait of march of layer surface is consistent, sound wave just strengthens the vibration of bending wave, this phenomenon claims coincidence effect.At this moment bending wave shakes
Dynamic degree of convergence is especially big, and the energy of radiative acoustic wave is also especially big into another side air, so as to reduce soundproof effect.Generate kiss
Close effect frequency fc be：Fc=co2/2 π sin2 θ [12 ρ (1- σ 2)/eh2] 1/2
ρ, σ, e are respectively the density, Poisson's ratio and Young's modulus of interlayer material in formula, and h is compartment thickness.The arbitrary frequency that coincide
Rate fc is related with sound wave incident angle θ.Sound field in most of rooms all close to reverberant field, reach the incidence angle of interlayer from
0 ° to 90 ° is likely to, therefore coincidence frequency appears in a frequency range since the fc0 of glancing incidence (θ=90 °),
That is coincidence effect makes the soundproof effect of a certain frequency range be deteriorated.This general frequency range is happened at medium-high frequency.From matter
Amount law knows that medium-high frequency sound transmission loss is larger, other than the metallic plate of internal damping very little, because coincidence effect makes medium-high frequency sound transmission loss
The phenomenon that reduction, will not cause very big trouble.
This patent has three layers of acoustic material, and the second layer has the cavity for playing soundproof effect, three layers of acoustic material
Between density variation it is huge, sound wave can decline to a great extent after three layers of acoustic material are decayed.
In a kind of aforementioned front wall board of automobile assembly, the second puigging is made of first substrate, cellular board and second substrate,
First substrate is pasted onto the side of cellular board, and second substrate is pasted onto the opposite side of cellular board.
In a kind of aforementioned front wall board of automobile assembly, into regular hexagon, the cavity is grown up stripe shape for the section of the cavity,
The place straight line of the cavity is parallel with first substrate.
In a kind of aforementioned front wall board of automobile assembly, into regular hexagon, the cavity is grown up stripe shape for the section of the cavity,
The place straight line of the cavity is perpendicular to first substrate.
In a kind of aforementioned front wall board of automobile assembly, the material of first substrate, cellular board and second substrate is butyl rubber
Glue, the area of section of the cavity are more than or equal to 2.3 square millimeters, and less than or equal to 5.7 square millimeters.
In a kind of aforementioned front wall board of automobile assembly, foaming agent is filled in the cavity.
In a kind of aforementioned front wall board of automobile assembly, antetheca harden structure is equipped with the hole position for accommodating cable, and rubber is close
The corresponding position on sealing and hole position is located at equipped with rubber hose rubber hose in the position of the hole, and the cable is located at rubber
In hose, foaming agent is filled in rubber hose.
In a kind of aforementioned front wall board of automobile assembly, the making material of first puigging is PET felts, the first sound insulation
The thickness of layer is more than or equal to 1.7 millimeters, and less than or equal to 5.3 millimeters.
In a kind of aforementioned front wall board of automobile assembly, the making material of the third puigging is olefin resin, described
The thickness of three puiggings is more than or equal to 2.6 millimeters, and less than or equal to 7.1 millimeters.
Compared with prior art, the present invention has decrease of noise functions, can stop most of noise of automobile engine, prevent
Automobile cab is passed to, drives to experience so as to improve user.Three layers of puigging are set in antetheca harden structure, wherein, in
Between one layer of puigging have and play the cavity of deadening, coordinate the puigging of both sides can play significant deadening.
Compare after testing, more than 31% soundproof effect can be improved.
Description of the drawings
Fig. 1 is a kind of structure diagram of embodiment of the present invention；
Fig. 2 is a kind of structure diagram of embodiment of hole position；
Fig. 3 is this patent and the performance comparison experimental result picture of the prior art.
Reference numeral：1- front panel ontologies, the first puiggings of 2-, the second puiggings of 3-, 4- third puiggings, the first bases of 5-
Plate, 6- cellular boards, 7- second substrates, 8- cavitys, 9- cables, 10- foaming agents, 11- rubber hose, 12- holes position, 13- rubber are close
Sealing, 14- cavitys.
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
Specific embodiment
The embodiment of the present invention 1：As shown in Figure 1, a kind of front wall board of automobile assembly, positioned at automotive interior, automobile starts
Machine is located at the side of antetheca harden structure, and the driver's cabin of automobile is located at the opposite side of antetheca harden structure, including rubber sealant 13, preceding
Siding ontology 1, the first puigging 2, the second puigging 3 and third puigging 4, rubber sealant 13 are fitted in front panel ontology 1
On, have Packed cavity 14 between rubber sealant 13 and front panel ontology 1, rubber sealant 13 is fitted in front panel ontology
Close to the side of automobile engine on 1；First puigging 2 is fitted in the side of the second puigging 3, and third puigging 4 is fitted in
The opposite side of second puigging 3；It is close that first puigging 2, the second puigging 3 and third puigging 4 are respectively positioned on front panel ontology 1
The side of driver's cabin；Second puigging 3 has equally distributed cavity 8.
Second puigging 3 is made of first substrate 5, cellular board 6 and second substrate 7, and first substrate 5 is pasted onto cellular board 6
Side, second substrate 7 is pasted onto the opposite side of cellular board 6.Grow up into regular hexagon, the cavity 8 in the section of the cavity 8
Stripe shape, the place straight line of the cavity 8 are parallel with first substrate 5.
Embodiment 2：As depicted in figs. 1 and 2, a kind of front wall board of automobile assembly, positioned at automotive interior, automobile starts seat in the plane
In the side of antetheca harden structure, the driver's cabin of automobile is located at the opposite side of antetheca harden structure, including rubber sealant 13, front panel
Ontology 1, the first puigging 2, the second puigging 3 and third puigging 4, rubber sealant 13 are fitted on front panel ontology 1, rubber
Has Packed cavity 14 between glue sealant 13 and front panel ontology 1, rubber sealant 13 is fitted on front panel ontology 1 and leans on
The side of nearly automobile engine；First puigging 2 is fitted in the side of the second puigging 3, third puigging 4 be fitted in second every
The opposite side of sound-absorbing layer 3；First puigging 2, the second puigging 3 and third puigging 4 are respectively positioned on front panel ontology 1 close to driver's cabin
Side；Second puigging 3 has equally distributed cavity 8.
Second puigging 3 is made of first substrate 5, cellular board 6 and second substrate 7, and first substrate 5 is pasted onto cellular board 6
Side, second substrate 7 is pasted onto the opposite side of cellular board 6.Grow up into regular hexagon, the cavity 8 in the section of the cavity 8
Stripe shape, the place straight line of the cavity 8 is perpendicular to first substrate 5.The material of first substrate 5, cellular board 6 and second substrate 7 is equal
It is butyl rubber, the area of section of the cavity 8 is more than or equal to 2.3 square millimeters, and less than or equal to 5.7 squares of millis
Rice.Foaming agent is filled in the cavity 8.
Antetheca harden structure is equipped with the hole position 12 for accommodating cable 9, is corresponded on rubber sealant 13 with hole position 12
Position equipped with 11 rubber hose of rubber hose be located at the hole position 12 in, the cable 9 is located in rubber hose 11, and rubber is soft
Foaming agent 10 is filled in pipe 11.
Embodiment 3：As depicted in figs. 1 and 2, a kind of front wall board of automobile assembly, positioned at automotive interior, automobile starts seat in the plane
In the side of antetheca harden structure, the driver's cabin of automobile is located at the opposite side of antetheca harden structure, including rubber sealant 13, front panel
Ontology 1, the first puigging 2, the second puigging 3 and third puigging 4, rubber sealant 13 are fitted on front panel ontology 1, rubber
Has Packed cavity 14 between glue sealant 13 and front panel ontology 1, rubber sealant 13 is fitted on front panel ontology 1 and leans on
The side of nearly automobile engine；First puigging 2 is fitted in the side of the second puigging 3, third puigging 4 be fitted in second every
The opposite side of sound-absorbing layer 3；First puigging 2, the second puigging 3 and third puigging 4 are respectively positioned on front panel ontology 1 close to driver's cabin
Side；Second puigging 3 has equally distributed cavity 8.
Second puigging 3 is made of first substrate 5, cellular board 6 and second substrate 7, and first substrate 5 is pasted onto cellular board 6
Side, second substrate 7 is pasted onto the opposite side of cellular board 6.Grow up into regular hexagon, the cavity 8 in the section of the cavity 8
Stripe shape, the place straight line of the cavity 8 are parallel with first substrate 5.The material of first substrate 5, cellular board 6 and second substrate 7 is equal
It is butyl rubber, the area of section of the cavity 8 is more than or equal to 2.3 square millimeters, and less than or equal to 5.7 squares of millis
Rice.Foaming agent is filled in the cavity 8.
Antetheca harden structure is equipped with the hole position 12 for accommodating cable 9, is corresponded on rubber sealant 13 with hole position 12
Position equipped with 11 rubber hose of rubber hose be located at the hole position 12 in, the cable 9 is located in rubber hose 11, and rubber is soft
Foaming agent 10 is filled in pipe 11.
Embodiment 4：As depicted in figs. 1 and 2, a kind of front wall board of automobile assembly, positioned at automotive interior, automobile starts seat in the plane
In the side of antetheca harden structure, the driver's cabin of automobile is located at the opposite side of antetheca harden structure, including rubber sealant 13, front panel
Ontology 1, the first puigging 2, the second puigging 3 and third puigging 4, rubber sealant 13 are fitted on front panel ontology 1, rubber
Has Packed cavity 14 between glue sealant 13 and front panel ontology 1, rubber sealant 13 is fitted on front panel ontology 1 and leans on
The side of nearly automobile engine；First puigging 2 is fitted in the side of the second puigging 3, third puigging 4 be fitted in second every
The opposite side of sound-absorbing layer 3；First puigging 2, the second puigging 3 and third puigging 4 are respectively positioned on front panel ontology 1 close to driver's cabin
Side；Second puigging 3 has equally distributed cavity 8.
Second puigging 3 is made of first substrate 5, cellular board 6 and second substrate 7, and first substrate 5 is pasted onto cellular board 6
Side, second substrate 7 is pasted onto the opposite side of cellular board 6.Grow up into regular hexagon, the cavity 8 in the section of the cavity 8
Stripe shape, the place straight line of the cavity 8 are parallel with first substrate 5.
The material of first substrate 5, cellular board 6 and second substrate 7 is butyl rubber, and the area of section of the cavity 8 is big
In or equal to 2.3 square millimeters, and less than or equal to 5.7 square millimeters.Foaming agent is filled in the cavity 8.Antetheca
Harden structure is equipped with the hole position 12 for accommodating cable 9, and 12 corresponding positions of on rubber sealant 13 and hole position are equipped with rubber
11 rubber hose of glue hose is located in hole position 12, and the cable 9 is located in rubber hose 11, is filled in rubber hose 11
Foaming agent 10.The making material of first puigging 2 is PET felts, and the thickness of the first puigging 2 is more than or equal to 1.7
Millimeter, and less than or equal to 5.3 millimeters.The making material of the third puigging 4 is olefin resin, the third puigging
4 thickness is more than or equal to 2.6 millimeters, and less than or equal to 7.1 millimeters.
The front panel of sound insulation type front panel and embodiment 4 common in market is subjected to experimental analysis comparison, comparison result
Existing sound insulation type front panel is led over comprehensively see the front panel structural behaviour of Fig. 3 this patents.Especially frequency is higher than 3000
After, the antetheca harden structure sound insulation value of this patent is more than existing more than 43%, can obtain more than effect, on the one hand have benefited from
Selection of this patent to the first puigging and third puigging, most important the second sound insulation still employed with cavity body structure
Layer.
Claims (9)
1. a kind of front wall board of automobile assembly, positioned at automotive interior, the engine of automobile is located at the side of antetheca harden structure, automobile
Driver's cabin is located at the opposite side of antetheca harden structure, which is characterized in that including rubber sealant (13), front panel ontology (1), first
Puigging (2), the second puigging (3) and third puigging (4), rubber sealant (13) are fitted on front panel ontology (1), rubber
Has Packed cavity (14) between glue sealant (13) and front panel ontology (1), rubber sealant (13) is fitted in front panel
Close to the side of automobile engine on ontology (1)；First puigging (2) is fitted in the side of the second puigging (3), third sound insulation
Layer (4) is fitted in the opposite side of the second puigging (3)；First puigging (2), the second puigging (3) and third puigging (4) are equal
Positioned at front panel ontology (1) close to the side of driver's cabin；Second puigging (3) has equally distributed cavity (8).
2. a kind of front wall board of automobile assembly according to claim 1, which is characterized in that the second puigging (3) is by the first base
Plate (5), cellular board (6) and second substrate (7) composition, first substrate (5) are pasted onto the side of cellular board (6), second substrate (7)
It is pasted onto the opposite side of cellular board (6).
3. a kind of front wall board of automobile assembly according to claim 2, which is characterized in that the section of the cavity (8) is into just
Hexagon, cavity (8) the growth stripe shape, the place straight line of the cavity (8) are parallel with first substrate (5).
4. a kind of front wall board of automobile assembly according to claim 2, which is characterized in that the section of the cavity (8) is into just
Hexagon, cavity (8) the growth stripe shape, the place straight line of the cavity (8) is perpendicular to first substrate (5).
5. a kind of front wall board of automobile assembly according to claim 3 or 4, which is characterized in that first substrate (5), cellular board
(6) and the material of second substrate (7) is butyl rubber, and the area of section of the cavity (8) is more than or equal to 2.3 squares of millis
Rice, and less than or equal to 5.7 square millimeters.
6. a kind of front wall board of automobile assembly according to claim 1, which is characterized in that filled with bubble in the cavity (8)
Foam agent.
7. a kind of front wall board of automobile assembly according to claim 1, which is characterized in that antetheca harden structure is equipped with to hold
Receive the hole position (12) of cable (9), the corresponding position on rubber sealant (13) and hole position (12) is equipped with rubber hose (11)
Rubber hose is located in hole position (12), and the cable (9) is filled in rubber hose (11) in rubber hose (11)
Foaming agent (10).
A kind of 8. front wall board of automobile assembly according to claim 1, which is characterized in that the system of first puigging (2)
It is PET felts as material, the thickness of the first puigging (2) is more than or equal to 1.7 millimeters, and less than or equal to 5.3 millimeters.
A kind of 9. front wall board of automobile assembly according to claim 1, which is characterized in that the system of the third puigging (4)
It is olefin resin as material, the thickness of the third puigging (4) is more than or equal to 2.6 millimeters, and less than or equal to 7.1
Millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090013.0A CN108248695A (en) | 2018-01-30 | 2018-01-30 | A kind of front wall board of automobile assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090013.0A CN108248695A (en) | 2018-01-30 | 2018-01-30 | A kind of front wall board of automobile assembly |
Publications (1)
| Publication Number | Publication Date |
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| CN108248695A true CN108248695A (en) | 2018-07-06 |
Family
ID=62743102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090013.0A Pending CN108248695A (en) | 2018-01-30 | 2018-01-30 | A kind of front wall board of automobile assembly |
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| CN201736923U (en) * | 2010-06-23 | 2011-02-09 | 浙江吉利汽车研究院有限公司 | Automotive front wall sound insulation pad |
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| EP2207701B1 (en) * | 2007-08-04 | 2014-02-26 | HP Pelzer Holding GmbH | Sound insulation, particularly for motor vehicle interiors |
| CN103738037A (en) * | 2014-01-26 | 2014-04-23 | 上海交通大学 | Middle-low frequency sound insulation and heat insulation composite wall plate |
| CN204895601U (en) * | 2015-08-19 | 2015-12-23 | 第一拖拉机股份有限公司 | Wallboard soundproof and heat resistant device before tractor driver's cabin |
| CN205467738U (en) * | 2016-02-16 | 2016-08-17 | 江苏骁翔实业有限公司 | Enclose amortization heat insulating mattress before automotive interior |
| CN205881450U (en) * | 2016-07-05 | 2017-01-11 | 惠州比亚迪实业有限公司 | Composite sheet and have its car |
| CN107097732A (en) * | 2017-05-09 | 2017-08-29 | 上海蔚来汽车有限公司 | Many wire harness sound insulating pads |
| CN206690635U (en) * | 2017-03-08 | 2017-12-01 | 南昌航空大学 | A kind of denoising structure of regular hexagon cellular material |
-
2018
- 2018-01-30 CN CN201810090013.0A patent/CN108248695A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2207701B1 (en) * | 2007-08-04 | 2014-02-26 | HP Pelzer Holding GmbH | Sound insulation, particularly for motor vehicle interiors |
| CN201736923U (en) * | 2010-06-23 | 2011-02-09 | 浙江吉利汽车研究院有限公司 | Automotive front wall sound insulation pad |
| CN201800647U (en) * | 2010-07-22 | 2011-04-20 | 浙江吉利汽车研究院有限公司 | Automobile front sound insulation pad |
| CN103738037A (en) * | 2014-01-26 | 2014-04-23 | 上海交通大学 | Middle-low frequency sound insulation and heat insulation composite wall plate |
| CN204895601U (en) * | 2015-08-19 | 2015-12-23 | 第一拖拉机股份有限公司 | Wallboard soundproof and heat resistant device before tractor driver's cabin |
| CN205467738U (en) * | 2016-02-16 | 2016-08-17 | 江苏骁翔实业有限公司 | Enclose amortization heat insulating mattress before automotive interior |
| CN205881450U (en) * | 2016-07-05 | 2017-01-11 | 惠州比亚迪实业有限公司 | Composite sheet and have its car |
| CN206690635U (en) * | 2017-03-08 | 2017-12-01 | 南昌航空大学 | A kind of denoising structure of regular hexagon cellular material |
| CN107097732A (en) * | 2017-05-09 | 2017-08-29 | 上海蔚来汽车有限公司 | Many wire harness sound insulating pads |
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Application publication date: 20180706 |
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| RJ01 | Rejection of invention patent application after publication |