CN105957513A - Plate-type broadband sound insulation component - Google Patents
Plate-type broadband sound insulation component Download PDFInfo
- Publication number
- CN105957513A CN105957513A CN201610275915.2A CN201610275915A CN105957513A CN 105957513 A CN105957513 A CN 105957513A CN 201610275915 A CN201610275915 A CN 201610275915A CN 105957513 A CN105957513 A CN 105957513A
- Authority
- CN
- China
- Prior art keywords
- broadband
- board
- plate
- elastic plate
- sound member
- 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
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention relates to a plate-type broadband sound insulation component, the component comprises a base plate and a side plate of which lower edge is connected with the edge of the base plate, an opening box body is formed by the base plate and the side plate, a sound absorption layer is arranged in the box body, a support grating covers the opening of the box body, an elastic plate is adhered to the support grating, the elastic plate is separated into a plurality of elastic units by grid bars of the support grating, and a mass block and a plurality of silencing holes are arranged on each elastic unit. The plate-type broadband sound insulation component has a function of insulating broadband noise, and the component can insulate low-frequency noise, mid-frequency noise and high-frequency noise; the plate-type broadband sound insulation component is integrated as one, the occupation space is small, so that the component is good for being arranged in a vehicle.
Description
Technical field
The present invention relates to vehicle noise control, be specifically related to a kind of board-like broadband partiting sound member.
Background technology
Pass-by noise, particularly engine noise are the main sources of internal car noise.Enging cabin is close with the distance of occupant, and engine noise is delivered in car through the front panel of vehicle, is the maximum noise contribution source of internal car noise.At present, the common control method of vehicle front panel noise has: 1) increase the thickness of front panel；2) thickness of front panel acoustic pad is increased；3) thickness of front panel sound absorption pad is increased.
But these three method has its limitation.Increase the thickness of front panel, the isolation effect of low-frequency noise can only be improved, it is impossible to solve the sound insulation problem of high-frequency noise, and it is a lot of that vehicle weight can be made to increase；Increase the thickness of front panel acoustic pad, mainly increase the defening effect of low frequency, it is impossible to improve the defening effect of high-frequency noise, and it is a lot of that vehicle weight can be made to increase；Increase the thickness of front panel sound absorption pad, the acoustically effective of high-frequency noise can only be improved, and the sound insulation problem of low-frequency noise can not be solved.It addition, the restriction of the arrangement space at vehicle front panel, the thickness increasing front panel acoustic pad, the thickness increasing front panel sound absorption pad are restricted, it is impossible to meet sound insulation demand.
Summary of the invention
The purpose of the present invention is to propose to a kind of board-like broadband partiting sound member, in the arrangement space not changed at vehicle front panel with on the premise of not increasing board-like broadband partiting sound member weight, low-frequency noise, mid-frequency noise and high-frequency noise can be isolated the most simultaneously, strengthen defening effect simultaneously.
One of the present invention board-like broadband partiting sound member, including substrate, the following side plate being connected with substrate edges, described substrate constitutes opening box body with side plate, it is provided with absorbent treatment in described box body, the opening part of described box body is coated with supportive grid, being fitted with elastic plate in described supportive grid, described elastic plate is separated into several Flexible elements by the grizzly bar of described supportive grid, and each described Flexible element is equipped with mass and several bloops.Board-like broadband partiting sound member is arranged on the mating shapes of the front panel at the front panel of vehicle and with vehicle, and elastic plate, bloop and the cavity in box body define a perforation structure of resonant cavity, and its function is to eliminate mid-frequency noise；Defining a vibration resonance structure with mass on Flexible element on elastic plate, major function is to eliminate low-frequency noise；The function of absorbent treatment is to eliminate high-frequency noise.
Further, the mass on several Flexible elements described has the weight that at least two is different.
Further, described mass is pasted onto the center of described Flexible element, and described bloop is distributed in around described mass.
Further, several Flexible elements described have at least two difformity or area.
Further, described absorbent treatment is made up of sound-absorbing porous material.
Further, described absorbent treatment is close to described substrate, has gap between described elastic plate and described absorbent treatment.
Further, the thickness of described elastic plate is 0.5mm-2mm.
Further, the punching rate of described elastic plate is 1%-20%.
Further, described elastic plate is 10mm-50mm with the distance of described substrate.
Board-like broadband partiting sound member of the present invention possesses the function of isolation wideband noise, it is possible to isolate low-frequency noise, mid-frequency noise and high-frequency noise simultaneously；This board-like broadband partiting sound member becomes one, and takes up room little, is beneficial to arrange in vehicle.
Accompanying drawing explanation
Fig. 1 is the sectional view of board-like broadband partiting sound member of the present invention；
Fig. 2 is the axonometric drawing of board-like broadband partiting sound member of the present invention；
Fig. 3 is the explosive view of board-like broadband partiting sound member of the present invention；
Fig. 4 is the defening effect comparison diagram of board-like broadband partiting sound member of the present invention and tradition sound insulationg board；
In figure: 1 substrate；2 side plates；3 absorbent treatments；4 supportive grid；5 elastic plates；6 bloops；7 masses.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
One board-like broadband partiting sound member as shown in Figure 1 to Figure 3, including substrate 1, the following side plate 2 being connected with substrate 1 edge, substrate 1 and side plate 2 constitute opening box body, absorbent treatment 3 it is provided with in box body, the opening part of box body is coated with supportive grid 4, elastic plate 5 it is fitted with in supportive grid 4, elastic plate 5 is separated into several Flexible elements by the grizzly bar of supportive grid 4, mass 7 and several bloops 6 it are equipped with on each Flexible element, mass 7 is pasted onto the center of Flexible element, and bloop 6 is distributed in mass 7 around.Wherein substrate 1 primarily serves the effect of isolation low-frequency noise, and the substrate 1 selecting surface density bigger has more preferable defening effect, can be adjusted the oise insulation factor of substrate 1 by the thickness of the material of selection substrate 1 or adjustment substrate 1.
In said structure, elastic plate 5 has elasticity, can be metallic plate or rubber slab.Elastic plate 5, bloop 6 and the cavity in box body define a perforation structure of resonant cavity, and the function of perforation structure of resonant cavity is to eliminate mid-frequency noise.Above-mentioned perforation structure of resonant cavity forms Helmholtz resonator cavity, when being input to the frequency of noise of above-mentioned perforation structure of resonant cavity and being positioned near its resonant frequency, the resonance of the air layer in box body will be ignited, produce fierce vibration and friction, thus consume the acoustic energy of noise, when being input to noise consistent with its resonant frequency of above-mentioned perforation structure of resonant cavity, above-mentioned perforation structure of resonant cavity acoustically effective is best.And the thickness of elastic plate 5 is the biggest, distance between elastic plate 5 and substrate 1 is the biggest, the meansigma methods punching rate the biggest, bloop 6 of the perforation spacings of bloop 6 is the least, the best Frequency point of perforation structure of resonant cavity defening effect is the lowest.In the present invention, in order to play elastic plate 5, the bloop 6 advantage during eliminating the noise, elastic plate 5 is set to 10mm-50mm with the distance of substrate 1, the perforation spacings of bloop 6 is in the range of 20-50mm, the thickness of elastic plate 5 is 0.5mm-2mm, and the punching rate of elastic plate 5 is set to 1%-20%, and the punching rate of elastic plate 5 is preferably 1%-5%, when punching rate is more than 20%, the sound absorption efficiency of perforation structure of resonant cavity the most greatly reduces.When using above-mentioned data, the interval of the resonant frequency of above-mentioned perforation structure of resonant cavity is 1.5-6.9 kHz.
A vibration resonance structure is defined with mass 7 on Flexible element on elastic plate 5, major function is to eliminate low-frequency noise, when being input to the frequency of noise of Flexible element close to the resonant frequency of above-mentioned vibration resonance structure, the locally resonant of vibration resonance structure is ignited, whole vibration resonance structure is produced counteracting force, suppress or offset original vibration, vibrational energy is limited in vibration resonance structure, cannot pass through vibration resonance structure to continue to propagate, thus play the effect of vibration isolation sound insulation.When the Flexible element on elastic plate 5 is the same and the weight of mass 7 is the same, the low-frequency noise of certain characteristic frequency can be eliminated；When area or the shape of Flexible element have difference, or when the weight of mass 7 has difference, in the board-like broadband partiting sound member of the present invention, just form multiple vibration resonance structure, the low-frequency noise of multiple frequency can be eliminated.Concrete, in order to eliminate the low-frequency noise of multiple frequency, the mass 7 on several Flexible elements has the weight that at least two is different, and several Flexible elements have at least two difformity or area.The Flexible element of various shape or area can be realized by adjusting the grizzly bar of supportive grid 4.
The function of absorbent treatment 3 is to eliminate high-frequency noise, is equipped with absorbent treatment 3 between elastic plate 5 and substrate 1, as it is shown in figure 1, the edge of supportive grid 4 is fixed on side plate 2, absorbent treatment 3 is close to substrate 1, has gap between elastic plate 5 and absorbent treatment 3.Absorbent treatment 3 is made up of sound-absorbing porous material, and sound-absorbing porous material can use fiber-like, foam class or particulate species material.
Preferred as one, supportive grid 4 includes housing, some horizontal grizzly bars and some longitudinal grizzly bars, and supportive grid 4 can be made up, such as resin of metal or other hard materials.
Preferred as one, the front panel of available vehicle is as substrate 1.
As shown in Figure 4, the transmission loss of board-like broadband partiting sound member of the present invention is significantly greater than the transmission loss of tradition sound insulationg board, and the defening effect of board-like broadband partiting sound member the most of the present invention is more preferably.
Claims (9)
1. a board-like broadband partiting sound member, including substrate (1), the following side plate (2) being connected with substrate (1) edge, described substrate (1) constitutes opening box body with side plate (2), it is characterized in that: in described box body, be provided with absorbent treatment (3), the opening part of described box body is coated with supportive grid (4), elastic plate (5) it is fitted with in described supportive grid (4), described elastic plate (5) is separated into several Flexible elements by the grizzly bar of described supportive grid (4), and each described Flexible element is equipped with mass (7) and several bloops (6).
Board-like broadband partiting sound member the most according to claim 1, it is characterised in that: the mass (7) on several Flexible elements described has the weight that at least two is different.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: described mass (7) is pasted onto the center of described Flexible element, and described bloop (6) is distributed in described mass (7) around.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: several Flexible elements described have at least two difformity or area.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: described absorbent treatment (3) is made up of sound-absorbing porous material.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: described absorbent treatment (3) is close to described substrate (1), has gap between described elastic plate (5) and described absorbent treatment (3).
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: the thickness of described elastic plate (5) is 0.5mm-2mm.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: the punching rate of described elastic plate (5) is 1%-20%.
Board-like broadband partiting sound member the most according to claim 1 and 2, it is characterised in that: described elastic plate (5) is 10mm-50mm with the distance of described substrate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275915.2A CN105957513A (en) | 2016-04-29 | 2016-04-29 | Plate-type broadband sound insulation component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275915.2A CN105957513A (en) | 2016-04-29 | 2016-04-29 | Plate-type broadband sound insulation component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105957513A true CN105957513A (en) | 2016-09-21 |
Family
ID=56916227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610275915.2A Pending CN105957513A (en) | 2016-04-29 | 2016-04-29 | Plate-type broadband sound insulation component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105957513A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192484A1 (en) * | 2017-04-18 | 2018-10-25 | 黄礼范 | Acoustic material structure and method for assembling same and acoustic radiation structure |
| CN108775091A (en) * | 2018-08-06 | 2018-11-09 | 深圳市航天新材科技有限公司 | A kind of compound locally resonant metamaterial sound panel |
| CN112639959A (en) * | 2018-09-06 | 2021-04-09 | 三菱化学株式会社 | Sound insulating sheet member, sound insulating structure using the same, and method for manufacturing sound insulating sheet member |
| CN112747060A (en) * | 2020-12-30 | 2021-05-04 | 西北工业大学 | Quasi-periodic local resonance structure for widening vibration reduction frequency band |
| CN115635925A (en) * | 2022-12-26 | 2023-01-24 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594080A (en) * | 2013-10-25 | 2014-02-19 | 国家电网公司 | Light low-frequency wideband film metamaterial sound isolator |
| CN103996395A (en) * | 2014-05-29 | 2014-08-20 | 西安交通大学 | Elastic membrane-type low-frequency sound insulation metamaterial structure |
| CN203895113U (en) * | 2014-04-23 | 2014-10-22 | 北京绿创声学工程股份有限公司 | Composite low frequency resonance sound absorption structure |
| CN203910264U (en) * | 2014-06-04 | 2014-10-29 | 美的集团股份有限公司 | Household appliance composite sound insulating plate and dish washing machine having same |
-
2016
- 2016-04-29 CN CN201610275915.2A patent/CN105957513A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594080A (en) * | 2013-10-25 | 2014-02-19 | 国家电网公司 | Light low-frequency wideband film metamaterial sound isolator |
| CN203895113U (en) * | 2014-04-23 | 2014-10-22 | 北京绿创声学工程股份有限公司 | Composite low frequency resonance sound absorption structure |
| CN103996395A (en) * | 2014-05-29 | 2014-08-20 | 西安交通大学 | Elastic membrane-type low-frequency sound insulation metamaterial structure |
| CN203910264U (en) * | 2014-06-04 | 2014-10-29 | 美的集团股份有限公司 | Household appliance composite sound insulating plate and dish washing machine having same |
Non-Patent Citations (1)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委员会等: "《注册环保工程师专业考试复习教材》", 31 May 2007, 中国环境科学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192484A1 (en) * | 2017-04-18 | 2018-10-25 | 黄礼范 | Acoustic material structure and method for assembling same and acoustic radiation structure |
| CN108731838A (en) * | 2017-04-18 | 2018-11-02 | 黄礼范 | A kind of acoustical material structure and its assemble method with acoustic radiation structure |
| CN108775091A (en) * | 2018-08-06 | 2018-11-09 | 深圳市航天新材科技有限公司 | A kind of compound locally resonant metamaterial sound panel |
| CN112639959A (en) * | 2018-09-06 | 2021-04-09 | 三菱化学株式会社 | Sound insulating sheet member, sound insulating structure using the same, and method for manufacturing sound insulating sheet member |
| US12020676B2 (en) | 2018-09-06 | 2024-06-25 | Mitsubishi Chemical Corporation | Sound-blocking sheet member, sound-blocking structure using same, and method for manufacturing sound-blocking sheet member |
| CN112747060A (en) * | 2020-12-30 | 2021-05-04 | 西北工业大学 | Quasi-periodic local resonance structure for widening vibration reduction frequency band |
| CN115635925A (en) * | 2022-12-26 | 2023-01-24 | 质子汽车科技有限公司 | Vehicle cab and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105957513A (en) | Plate-type broadband sound insulation component | |
| JP2986711B2 (en) | Airborne sound attenuator | |
| JP5326472B2 (en) | Sound absorption structure | |
| US4997058A (en) | Sound transducer | |
| RU2405216C2 (en) | Layered structure having double order frequency-selective characteristic | |
| CN101515453B (en) | Sound absorbing structure and vehicle component having sound absorption property | |
| US20090223738A1 (en) | Sound absorbing structure and vehicle component having sound absorption property | |
| BG103731A (en) | Loudspeakers built in passenger vehicles containing acoustic emission components having panel form | |
| CN104751836A (en) | Magnetic negative-stiffness sound absorption device and method | |
| JP2002159083A (en) | Speaker unit for reproducing low-frequency band | |
| CN113439300B (en) | Sound reflection structure | |
| CN112026296A (en) | Low-frequency sound insulation honeycomb board | |
| JP2007502748A (en) | Noise reduction components such as vehicle floor panels | |
| CN104616648A (en) | Composite sound absorption plate | |
| JP2000265593A (en) | Soundproof material | |
| EP3926622A1 (en) | Sound reflection structure | |
| CN112805184B (en) | Sound insulation panel for automobile | |
| CN209482506U (en) | Acoustic resistance muffler body | |
| WO2001010168A2 (en) | Loudspeaker | |
| CN204463811U (en) | A kind of magnetic force negative stiffness sound absorber | |
| CN213713314U (en) | Air conditioner outdoor unit shell and air conditioner | |
| US20120024624A1 (en) | Acoustic panel for receiving, emitting or absorbing sounds | |
| JP2001105521A (en) | Sound-absorbing structure | |
| KR101979378B1 (en) | Splitter and sound attenuator including the same | |
| CN100381015C (en) | Panel-shaped loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |
|
| RJ01 | Rejection of invention patent application after publication |