CN206021900U - A kind of sound-insulating structure - Google Patents
A kind of sound-insulating structure Download PDFInfo
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- CN206021900U CN206021900U CN201621084201.5U CN201621084201U CN206021900U CN 206021900 U CN206021900 U CN 206021900U CN 201621084201 U CN201621084201 U CN 201621084201U CN 206021900 U CN206021900 U CN 206021900U
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- sound
- thin film
- framework
- mass elements
- insulating
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Abstract
The utility model discloses a kind of sound-insulating structure, including at least one acoustic insulating unit, the acoustic insulating unit includes framework, thin film and mass elements, the framework has the hollow structure of opening for two ends, the framework of hollow structure is respectively arranged at two ends with the thin film, and the mass elements are arranged on the thin film.The sound-insulating structure can effectively intercept low frequency noise；Simple structure, easy to process, small volume.
Description
Technical field
This utility model is related to sound insulation technology, more particularly to a kind of sound-insulating structure.
Background technology
21 century China's sciemtifec and technical sphere, the such as plant equipment such as airdreadnought, high-speed railway enter Rapid development stage,
Then people are surrounded by various noises, and people also begin to recognize noise for the harm of own body.
Nowadays, sound insulating material is commonly applied to noise control each side, from manufacturing industry to the daily of resident
Life.But low frequency noise is it is difficult to be blocked, existing sound barrier material such as foam, the noise only to high frequency such as composite plate
There is good barriering effect, these materials are typically intercepted to low frequency noise to improve with the mode for increasing thickness, certainly this sample prescription
Formula is subjected to the restriction of weight and volume and is difficult to when implementing.Therefore it is one to the control of low frequency noise to be highly desirable to
Work.
Utility model content
Technical problem to be solved in the utility model is：A kind of sound-insulating structure is provided, the sound-insulating structure can be effectively
Intercept low frequency noise.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of sound-insulating structure, including at least
The acoustic insulating unit of one, the acoustic insulating unit include that framework, thin film and mass elements, the framework have in opening for two ends
Hollow structure, the framework of hollow structure are respectively arranged at two ends with the thin film, and the mass elements are arranged on the thin film.
Further, the number of the acoustic insulating unit is two or more, and the plural acoustic insulating unit connects respectively
Form the sound-insulating structure.
Further, the plural acoustic insulating unit is in periodic distribution.
Further, on the framework, the mass elements are adhered on the thin film film bond.
Further, the mass elements are arranged at the center of thin film.
Further, the material of the framework is rigid material, and the material of the thin film is elastomeric material.
Further, the framework is cube structure, and the length of side of the framework of cube structure is 5mm-15mm, wall
Thick is 0.3mm-0.7mm.
Further, the film thickness is 0.1mm-0.4mm.
Further, the mass elements be cylindrical structure, the bottom surface of the mass elements of cylindrical structure straight
Footpath is 0.6mm-1.5mm.
Further, the material of the mass elements is metal material or metal alloy compositions.
The beneficial effects of the utility model are：The thin film of acoustic insulating unit and additional mass-element thereon in sound-insulating structure
Part constitutes local resonance structure, and under outside acoustic wave excitation, thin film and mass elements produce locality and reversely resonate, and make sound insulation list
The average displacement of unit is zero, effectively intercepts low frequency noise；Simple structure, easy to process.
Description of the drawings
Overall schematics of the Fig. 1 for the sound-insulating structure of this utility model embodiment one；
Front views of the Fig. 2 for the sound-insulating structure of this utility model embodiment one；
Fig. 3 is the enlarged drawing of details A in Fig. 2；
Sound-insulating structure finite element test result sectional drawings of the Fig. 4 for this utility model embodiment one；
Label declaration：
1st, framework；2nd, thin film；3rd, mass elements；
Specific embodiment
By describing technology contents of the present utility model in detail, realizing purpose and effect, below in conjunction with embodiment and match somebody with somebody
Close accompanying drawing to be explained.
The design of this utility model most critical is：The thin film and mass elements of acoustic insulating unit is equivalent into a spring connection
The locally resonant structure of one oscillator.
Fig. 1 to Fig. 4 is refer to, a kind of sound-insulating structure, including at least one acoustic insulating unit, the acoustic insulating unit includes frame
Frame 1, thin film 2 and mass elements 3, the framework 1 have the hollow structure of opening for two ends, the framework 1 of hollow structure
The thin film 2 is respectively arranged at two ends with, the mass elements 3 are arranged on the thin film 2.
Knowable to foregoing description, the beneficial effects of the utility model are：The thin film of acoustic insulating unit and attached in sound-insulating structure
The mass elements being added in thereon constitute local resonance structure, and under outside acoustic wave excitation, thin film and mass elements produce locality
Reversely resonate, the average displacement for making acoustic insulating unit is zero, effectively intercept low frequency noise；Simple structure, easy to process.
Further, the number of the acoustic insulating unit is two or more, and the plural acoustic insulating unit connects respectively
Form the sound-insulating structure.
Further, the plural acoustic insulating unit is in periodic distribution.
Knowable to foregoing description, used as a specific structure example, the number of acoustic insulating unit is multiple, multiple sound insulation lists
Connection forms the sound-insulating structure respectively for unit.Multiple acoustic insulating units can be in periodic distribution, and concrete distribution mode can be selected
Array periodic distribution, such as along plane, two mutually perpendicular directions array arrangement forms a larger rectangle sound insulation
Structure, or the sound-insulating structure of other shapes.
Further, the thin film 2 is adhered on the framework 1, and the mass elements 3 are adhered on the thin film 2.
Further, the mass elements 3 are arranged at the center of thin film 2.
Knowable to foregoing description, used as a specific structure example, mass elements are bonded on thin film, in fact, matter
Amount element can be combined with thin film using other modes, such as, a screens is set at the heart in the film, mass elements are fastened on
In the screens.
Further, the material of the framework 1 is rigid material, and the material of the thin film 2 is elastomeric material.
Knowable to foregoing description, the framework that rigid material is made can be played a supporting role, the thin film that elastomeric material is made
The tensile force of bonding needs can be provided.
Further, the framework 1 is cube structure, and the length of side of the framework 1 of cube structure is 5mm-15mm,
Wall thickness is 0.3mm-0.7mm.
Knowable to foregoing description, on the premise of proof strength, the reduction that framework wall thickness can be appropriate is conducive to mitigating whole
The weight of individual sound-insulating structure.
Further, 2 thickness of the thin film is 0.1mm-0.4mm.
Knowable to foregoing description, film thickness is little, using the teaching of the invention it is possible to provide enough tensile forces, makes thin film bonding with framework firm；
The interval thin film of this thickness is directed to the obstruct that the noise of middle low frequency 100-500Hz can produce a wider band gap.
Further, the mass elements 3 are cylindrical structure, the bottom surface of the mass elements 3 of cylindrical structure
A diameter of 0.6mm-1.5mm.
Further, the material of the mass elements 3 is metal material or metal alloy compositions.
Knowable to foregoing description, metal material and metal alloy compositions are the larger materials of density ratio, from their conducts
Mass elements, are conducive to the volume for reducing mass elements.
Embodiment one
Fig. 1 to Fig. 4 is refer to, embodiment of the present utility model is：As shown in Figure 1 to Figure 3, a kind of sound-insulating structure, bag
At least one acoustic insulating unit is included, the acoustic insulating unit includes that framework 1, thin film 2 and mass elements 3, the framework 1 have for two ends
There is a hollow structure of opening, the framework 1 of hollow structure is respectively arranged at two ends with the thin film 2, and the mass elements 3 are arranged
On the thin film 2.
The number of the acoustic insulating unit is two or more, the plural acoustic insulating unit connect respectively to be formed described every
Sound structure.It is preferred that, the plural acoustic insulating unit forms a larger grid knot in periodic distribution
Structure.
The thin film 2 is adhered on the framework 1, and the mass elements 3 are adhered on the thin film 2, it is preferred that described
Mass elements 3 are arranged at center of the thin film 2 away from the side of the framework 1.
The material of the framework 1 is rigid material, and the rigid material is lucite or aluminium alloy, it should be understood that,
Available rigid material is far above both, and other quality are little, the material that intensity is high may also be used for making the framework 1.?
In the present embodiment, the framework 1 is cube structure, and the length of side of the framework 1 of cube structure is 5mm-15mm, and wall thickness is
0.3mm-0.7mm.Preferably, the length of side of the framework 1 is 10mm, wall thickness is 0.5mm.
As the thin film 2 is 1 two ends of the framework to be bonded in by tensile force, it requires the material of the thin film 2
Matter is elastomeric material, preferably latex.It should be understood that silica gel is also a kind of elastomeric material, which is also feasible as thin film 2.
Further, 2 thickness of the thin film is 0.1mm-0.4mm, and in the present embodiment, the thickness of the thin film 2 is 0.2mm.
The material of the mass elements 3 is metal material or metal alloy compositions, and the metal alloy compositions are cast iron,
The mass elements 3 be cylindrical structure, a diameter of 0.6mm-1.5mm of the bottom surface of the mass elements 3 of cylindrical structure,
It is preferred that 1mm.
The thin film 2 and mass elements 3 of each acoustic insulating unit can the equivalent local for connecting an oscillator into spring altogether
Shake structure, the tensile force of thin film 2 is adjusted similar to the coefficient of elasticity for changing spring, adjust the size and material class of mass elements 3
It is similar to the quality for changing oscillator.Therefore, it is possible to pass through the size and the material that adjust the tensile force of thin film 2 and adjustment mass elements 3,
The sound insulation crest frequency of control sound-insulating structure.As shown in figure 4, after framework 1, thin film 2, mass elements 3 are respectively adopted preferred size,
The acoustics transmission loss curve that acoustic insulating unit is obtained through finite element software emulation mode (FEM), it is found that in low-frequency range,
Especially in 100-500HZ band limits, there is multiple absorption peak.Highest transmission loss amount can reach 77.02dB,
Define the structure of a multi-band-gap high-selenium corn in low-frequency range.
In sum, the sound-insulating structure that this utility model is provided, the sound-insulating structure can effectively intercept low frequency noise；Knot
Structure is simple, easy to process, small volume.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, every
The equivalents that is made using this utility model description and accompanying drawing content, or directly or indirectly it is used in the technology neck of correlation
Domain, is included in scope of patent protection of the present utility model in the same manner.
Claims (10)
1. a kind of sound-insulating structure, it is characterised in that：Including at least one acoustic insulating unit, the acoustic insulating unit includes framework, thin
Film and mass elements, the two ends that the framework has the hollow structure of opening, the framework of hollow structure for two ends are set respectively
There are the thin film, the mass elements to be arranged on the thin film.
2. sound-insulating structure according to claim 1, it is characterised in that：The number of the acoustic insulating unit be two or more, two
The individual above acoustic insulating unit connects to form the sound-insulating structure respectively.
3. sound-insulating structure according to claim 2, it is characterised in that：The plural acoustic insulating unit is in periodicity point
Cloth.
4. the sound-insulating structure according to any one in claim 1-3, it is characterised in that：The film bond is in the frame
On frame, the mass elements are adhered on the thin film.
5. sound-insulating structure according to claim 4, it is characterised in that：The mass elements are arranged at the center of thin film.
6. the sound-insulating structure according to any one in claim 1-3 and 5, it is characterised in that：The material of the framework is
Rigid material, the material of the thin film is elastomeric material.
7. sound-insulating structure according to claim 6, it is characterised in that：The framework be cube structure, cube structure
The framework the length of side be 5mm-15mm, wall thickness is 0.3mm-0.7mm.
8. the sound-insulating structure according to any one in claim 1-3,5 and 7, it is characterised in that：The film thickness is
0.1mm-0.4mm.
9. sound-insulating structure according to claim 8, it is characterised in that：The mass elements be cylindrical structure, cylinder
A diameter of 0.6mm-1.5mm of the bottom surface of the mass elements of structure.
10. the sound-insulating structure according to any one in claim 1-3,5,7 and 9, it is characterised in that：The mass elements
Material be metal material or metal alloy compositions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084201.5U CN206021900U (en) | 2016-09-27 | 2016-09-27 | A kind of sound-insulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084201.5U CN206021900U (en) | 2016-09-27 | 2016-09-27 | A kind of sound-insulating structure |
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| Publication Number | Publication Date |
|---|---|
| CN206021900U true CN206021900U (en) | 2017-03-15 |
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ID=58261435
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621084201.5U Expired - Fee Related CN206021900U (en) | 2016-09-27 | 2016-09-27 | A kind of sound-insulating structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685645A (en) * | 2021-09-22 | 2021-11-23 | 南京航空航天大学 | Pipeline noise control device and method based on local resonance mechanism acoustic metamaterial |
-
2016
- 2016-09-27 CN CN201621084201.5U patent/CN206021900U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685645A (en) * | 2021-09-22 | 2021-11-23 | 南京航空航天大学 | Pipeline noise control device and method based on local resonance mechanism acoustic metamaterial |
| CN113685645B (en) * | 2021-09-22 | 2022-09-27 | 南京航空航天大学 | Pipeline noise control device and method based on local resonance mechanism acoustic metamaterial |
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| Date | Code | Title | Description |
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| 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: 20170315 Termination date: 20170927 |