CN219738533U - Hollow acoustic metamaterial sound insulation board - Google Patents
Hollow acoustic metamaterial sound insulation board Download PDFInfo
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- CN219738533U CN219738533U CN202320627061.5U CN202320627061U CN219738533U CN 219738533 U CN219738533 U CN 219738533U CN 202320627061 U CN202320627061 U CN 202320627061U CN 219738533 U CN219738533 U CN 219738533U
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- acoustic metamaterial
- thin film
- module
- hollow
- outer plate
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- 238000009413 insulation Methods 0.000 title description 17
- 239000010409 thin film Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
The utility model discloses a hollow acoustic metamaterial sound-insulating plate, which belongs to the technical field of sound-insulating plates and comprises an outer plate and a thin film acoustic metamaterial module, wherein a containing cavity for containing the thin film acoustic metamaterial module is formed in the outer plate, at least one rib is further arranged in the outer plate, and the rib is positioned on one side of the thin film acoustic metamaterial module; the thin film acoustic metamaterial module comprises at least two frames, a plurality of frames are arranged in a stacked mode, a thin film is arranged between every two frames, a mass block is arranged on each thin film, the thin film acoustic metamaterial module is located in the accommodating cavity, a resonance cavity is formed in the thin film acoustic metamaterial module, the upper panel and the lower panel of the thin film acoustic metamaterial are integrally designed to be an outer panel, an accommodating cavity for accommodating the thin film acoustic metamaterial module is formed in the outer panel, ribs are arranged in the accommodating cavity, the overall rigidity of the outer panel is improved, the complex process problem of large-area adhesion is avoided, and practical production and engineering application are facilitated.
Description
Technical Field
The utility model relates to the technical field of sound insulation boards, in particular to a hollow acoustic metamaterial sound insulation board.
Background
The thin film type acoustic metamaterial sound-insulating plate has excellent low-frequency-band sound-insulating performance due to the local resonance effect of the low frequency band, and the mass density law which is followed by the traditional sound-insulating plate is overturned, so that the light sound-insulating technology becomes possible, and the thin film type acoustic metamaterial sound-insulating plate becomes a research hot spot for a plurality of students in recent years. The mass blocks are arranged on the surfaces of the films, so that the resonance frequency can be adjusted, and the width of a sound insulation frequency band can be increased in a multilayer composite mode.
In the current engineering application, the upper and lower panels of the acoustic panel and the film acoustic metamaterial module are mostly bonded or mechanically connected, the bonding mode is poor in shearing strength, the mechanical connecting positions are more, and the process is complex. In addition, the rigidity of the film acoustic metamaterial module is poor after a plurality of modules are spliced, and the sound insulation performance is affected.
Disclosure of Invention
The utility model provides a hollow acoustic metamaterial sound insulation board, which combines an upper panel and a lower panel into a whole, avoids a splicing mode, and is convenient for actual production.
To achieve the purpose, the utility model adopts the following technical scheme:
the hollow acoustic metamaterial sound insulation plate comprises an outer plate and a thin film acoustic metamaterial module, wherein a containing cavity for containing the thin film acoustic metamaterial module is formed in the outer plate, at least one rib is further arranged in the outer plate, and the rib is located on one side of the thin film acoustic metamaterial module; the thin film acoustic metamaterial module comprises at least two frames, wherein a plurality of frames are arranged in a stacked mode, a thin film is arranged between every two frames, a mass block is arranged on each thin film, and when the thin film acoustic metamaterial module is located in the containing cavity, a resonance cavity is formed in the thin film acoustic metamaterial module.
The preferable technical scheme of the utility model is that the thin film acoustic metamaterial module is matched with the ribs and the inner side wall of the outer plate through sealing rubber strips.
The preferable technical scheme of the utility model is that the sealing rubber strip is made of natural rubber or ethylene propylene diene monomer or silica gel.
The preferable technical scheme of the utility model is that a plurality of division bars are arranged in the frame, the division bars are perpendicular to the frame of the frame, the film is divided into a plurality of parts by the division bars, and the middle part of the film on two sides of each division bar is provided with a mass block.
The preferable technical scheme of the utility model is that the frame is arranged in a hollow way, and the height of the frame is more than or equal to 3 mm.
When a plurality of stacked film acoustic metamaterial modules are installed in one accommodating cavity, the ribs, the outer plates and the inner side walls of the outer plates are provided with mounting clamping strips, and the film acoustic metamaterial modules are installed on two sides of each mounting clamping strip.
The preferable technical proposal of the utility model is that the film is arranged as terylene resin or polyvinyl chloride resin or silica gel, the Young modulus of the film is 2e7 Pa-2 e9Pa, the Poisson ratio is 0.3-0.4, and the density is 900-1200 kg/m 3 The thickness is between 0.01 and 0.5 mm.
The frame is preferably made of ABS resin, glass fiber reinforced plastic or aluminum.
The utility model has the preferable technical proposal that the material of the outer plate is metal or nonmetal, and the outer plate is integrally formed by injection molding process or template process
The beneficial effects of the utility model are as follows:
(1) The utility model provides a hollow acoustic metamaterial sound insulation plate, which is characterized in that an upper panel and a lower panel of a thin film acoustic metamaterial are integrally designed into an outer plate, a containing cavity for containing a thin film acoustic metamaterial module is arranged in the outer plate, ribs are arranged in the containing cavity, the integral rigidity of the outer plate is improved, the complex process problem of large-area bonding is avoided, and the hollow acoustic metamaterial sound insulation plate is convenient for practical production and engineering application.
(2) The side surfaces of the ribs and the inner side walls of the outer plates are provided with the resonant cavities through the integrated mounting clamping strips, and the frames in the film acoustic metamaterial module only need to provide certain rigidity to support the constraint film, so that the surface density of the sound insulation plate is optimized, and the weight of the sound insulation plate is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an example 1 of a hollow acoustic metamaterial sound-proof board provided in an embodiment of the present utility model;
fig. 2 is a schematic diagram of the overall structure of an example 1 of a hollow acoustic metamaterial sound-proof board provided in an embodiment of the present utility model;
FIG. 3 is a schematic view of the overall structure of an outer panel of example 1 of a hollow acoustic metamaterial sound barrier provided in an embodiment of the present utility model;
fig. 4 is a schematic diagram of the overall arrangement structure of the thin film acoustic metamaterial module and the sealing rubber strip in the outer plate of the hollow acoustic metamaterial sound-insulation plate example 1 provided in the specific embodiment of the present utility model;
FIG. 5 is a schematic diagram showing the overall structure separation of a thin film acoustic metamaterial module of example 1 of a hollow acoustic metamaterial acoustical panel provided in an embodiment of the present utility model;
FIG. 6 is a side perspective view of a hollow acoustic metamaterial acoustical panel membrane acoustic metamaterial module provided in an embodiment of the present utility model;
FIG. 7 is a schematic view of the overall structure of a thin film acoustic metamaterial module and a sealing strip in an outer panel of example 2 of a hollow acoustic metamaterial sound insulation panel provided in an embodiment of the present utility model;
FIG. 8 is a schematic view of the overall structure of an outer panel of example 2 of a hollow acoustic metamaterial sound-proof panel provided in an embodiment of the present utility model;
fig. 9 is a schematic diagram of the overall structure of a thin film acoustic metamaterial module in example 2 of a hollow acoustic metamaterial sound-proof plate provided in an embodiment of the present utility model;
FIG. 10 is a schematic view of the overall structure of a hollow acoustic metamaterial sound-proof panel provided in an embodiment of the present utility model when a plurality of thin film acoustic metamaterial modules are stacked;
FIG. 11 is a schematic view of the overall structure of an outer panel of example 3 of a hollow acoustic metamaterial sound barrier provided in an embodiment of the present utility model;
FIG. 12 is a schematic view of the overall structure of an example 3 of a hollow acoustic metamaterial sound barrier provided in an embodiment of the present utility model;
in the figure:
1. an outer plate; 11. a receiving chamber; 12. a rib; 13. installing a clamping strip; 2. a frame; 21. a parting bead; 3. a film; 4. a mass block; 5. a resonant cavity; 6. and (5) sealing the adhesive tape.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-12, the hollow acoustic metamaterial sound insulation plate provided by the utility model comprises an outer plate 1, wherein the outer plate 1 can be made of metal or nonmetal materials (such as PVC, PP, ABS, aluminum alloy, calcium silicate, gypsum, concrete and the like), the outer plate 1 is integrally formed by an injection molding process or a template process, a containing cavity 11 for containing a thin film acoustic metamaterial module is formed in the outer plate 1, after the thin film acoustic metamaterial module is placed in the containing cavity 11, a sealing rubber strip 6 is arranged between the thin film acoustic metamaterial module and the outer plate 1, the sealing rubber strip 6 is adhered to two sides of the thin film acoustic metamaterial module by using adhesive glue, and the thin film acoustic metamaterial module is pressed into the outer plate 1 in an interference fit mode, so that the thin film acoustic metamaterial module is tightly fastened in the containing cavity 11 and does not shake, and a fixed constraint condition is provided for thin film resonance.
Wherein the size of the receiving chamber 11 is determined by the dimensions of the thin film acoustic metamaterial module and the sealing strips 6 in order to facilitate the installation of the thin film acoustic metamaterial module within the outer panel 1.
Because the sealing rubber strip 6 is made of compressible materials such as natural rubber, ethylene propylene diene monomer and silica gel, the sealing rubber strip 6 has certain damping property, and the noise radiation problem caused by structural vibration generated in use under a vibration environment can be reduced.
In order to increase the strength of the outer panel 1, a plurality of ribs 12 are provided inside the outer panel 1, and one side of at least one thin film acoustic metamaterial module is provided with a rib 12.
The membrane acoustic metamaterial module is provided with a plurality of frames 2, the frames 2 are arranged in a stacked mode, a layer of membrane 3 is arranged between every two frames 2, a mass block 4 is arranged on each membrane 3, the plurality of membranes 3 and the mass blocks 4 on the membrane acoustic metamaterial module can be composed of the same membrane 3 and the mass blocks 4, and also can be formed by compounding multiple layers of frames 2 through detailed design of different membranes 3 and different mass blocks 4, when the membrane acoustic metamaterial module is located in an outer plate 1, the mass blocks 4 are not contacted with the outer plate 1, and gaps exist between the mass blocks 4 and the outer plate 1.
A plurality of division bars 21 are arranged in the frame 2, the division bars 21 are perpendicular to the frame of the frame 2, the film 3 is divided into a plurality of parts by the division bars 21, and a mass block 4 is arranged on the film 3 of each part separated by the division bars 21.
The film 3 is generally polyester resin, polyvinyl chloride resin, silica gel, etc., the Young's modulus is 2e7 Pa-2 e9Pa, the Poisson ratio is generally 0.3-0.4, and the density is 900-1200 kg/m 3 The thickness is generally between 0.01 and 0.5 mm; the frame is generally made of ABS resin, glass fiber reinforced plastic, aluminum and other materials with high rigidity.
The frame 2 is hollow, so that the position from the membrane 3 to the top of the frame 2 is a resonance cavity 5, and the thickness of the resonance cavity 5 is greater than or equal to 3 mm, which means that the thickness of the frame is greater than or equal to 3 mm.
Example 1
As shown in fig. 1-5, a plurality of thin film acoustic metamaterial modules are installed in an outer plate 1, and only one-directional parting strips 21 are arranged on a frame 2 of each thin film acoustic metamaterial module, so that each thin film acoustic metamaterial module forms a strip-shaped structure, the thin film acoustic metamaterial modules are installed in a containing cavity 11, a rib 12 is arranged between every two adjacent thin film acoustic metamaterial modules, and a sealing adhesive tape 6 is arranged between each thin film acoustic metamaterial module and the rib 12 and between each thin film acoustic metamaterial module and the inner side wall of the outer plate 1.
Example 2
As shown in fig. 7 to 9, this embodiment is different from embodiment 1 in that the frame 2 is provided with vertical and lateral barrier ribs 21 therein, so that the width of the thin film acoustic metamaterial module is wider than that in embodiment 1, resulting in a wider width of the accommodating chamber 11.
Example 3
As shown in fig. 11-12, this embodiment is different in that the resonant cavity 5 is not required to be provided by the frame 2, and if the resonant cavity 5 is provided by the arrangement of the frame 2, the overall mass of the thin film acoustic metamaterial module is heavier, and in some cases, is not suitable, and the mass of the frame 2 is relatively large. In order to optimize the overall surface density of the sound insulation board and reduce the weight of the sound insulation board, the resonant cavity 5 can be provided by arranging an integrated mounting clamping strip 13 on the rib and the inner side wall of the outer board 1, and the frame 2 in the film acoustic metamaterial module only needs to provide certain rigidity to support the constraint film. The number of mounting clips 13 is determined by the number of layers of thin film acoustic metamaterial modules to be mounted in the accommodating cavity 11, and is shown as two layers. With this structural installation, the thickness of the frame need not be 3 mm or more.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The utility model is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the utility model.
Claims (9)
1. A hollow acoustic metamaterial sound-proof plate is characterized in that:
the device comprises an outer plate (1) and a thin film acoustic metamaterial module, wherein an accommodating cavity (11) for accommodating the thin film acoustic metamaterial module is formed in the outer plate (1), at least one rib (12) is further arranged in the outer plate (1), and the rib (12) is located on one side of the thin film acoustic metamaterial module;
the film acoustic metamaterial module comprises at least two frames (2), wherein a plurality of frames (2) are arranged in a stacked mode, a film (3) is arranged between every two frames (2), and a mass block (4) is arranged on each film (3);
when the thin film acoustic metamaterial module is located in the accommodating cavity (11), a resonant cavity (5) is formed in the thin film acoustic metamaterial module.
2. The hollow acoustic metamaterial sound barrier of claim 1, wherein:
the film acoustic metamaterial module is matched with the ribs (12) and the inner side wall of the outer plate (1) through sealing rubber strips (6).
3. A hollow acoustic metamaterial sound barrier as claimed in claim 2, wherein:
the sealing rubber strip (6) is made of natural rubber or ethylene propylene diene monomer or silica gel.
4. A hollow acoustic metamaterial sound barrier as claimed in claim 3, wherein:
a plurality of parting strips (21) are arranged in the frame (2), the parting strips (21) are perpendicular to the frame of the frame (2), the film (3) is divided into a plurality of parts by the parting strips (21), and one mass block (4) is arranged at the middle position of the film (3) on two sides of each parting strip (21).
5. A hollow acoustic metamaterial sound barrier as claimed in claim 3, wherein:
the frame (2) is arranged in a hollow mode, and the height of the frame (2) is more than or equal to 3 mm.
6. The hollow acoustic metamaterial sound barrier of claim 1, wherein:
when a plurality of stacked film acoustic metamaterial modules are arranged in one accommodating cavity (11), mounting clamping strips (13) are arranged on the ribs (12) and the inner side walls of the outer plate (1) and the inner side walls, and one film acoustic metamaterial module is arranged on two sides of each mounting clamping strip (13).
7. A hollow acoustic metamaterial sound barrier as claimed in claim 3, wherein:
the film (3) is arranged as polyester resin or polyvinyl chloride resin or silica gel, the Young modulus of the film (3) is 2e7 Pa-2 e9Pa, the Poisson ratio is 0.3-0.4, and the density is 900-1200 kg/m 3 The thickness is between 0.01 and 0.5 mm.
8. A hollow acoustic metamaterial sound barrier as claimed in claim 3, wherein:
the frame (2) is made of ABS resin or glass fiber reinforced plastic or aluminum.
9. The hollow acoustic metamaterial sound barrier of claim 1, wherein:
the material of the outer plate (1) is metal or nonmetal, and the outer plate (1) is integrally formed by an injection molding process or a template process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320627061.5U CN219738533U (en) | 2023-03-27 | 2023-03-27 | Hollow acoustic metamaterial sound insulation board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320627061.5U CN219738533U (en) | 2023-03-27 | 2023-03-27 | Hollow acoustic metamaterial sound insulation board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738533U true CN219738533U (en) | 2023-09-22 |
Family
ID=88027226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320627061.5U Active CN219738533U (en) | 2023-03-27 | 2023-03-27 | Hollow acoustic metamaterial sound insulation board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738533U (en) |
-
2023
- 2023-03-27 CN CN202320627061.5U patent/CN219738533U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |