CN207905148U - A kind of cavity type interlayer metamaterial structure - Google Patents
A kind of cavity type interlayer metamaterial structure Download PDFInfo
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- CN207905148U CN207905148U CN201721800928.3U CN201721800928U CN207905148U CN 207905148 U CN207905148 U CN 207905148U CN 201721800928 U CN201721800928 U CN 201721800928U CN 207905148 U CN207905148 U CN 207905148U
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- cavity
- partition board
- metamaterial structure
- type interlayer
- hole
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Abstract
The utility model discloses a kind of cavity type interlayer metamaterial structures, including：Interlayer element, interlayer element have cavity, the superficial layer for being located at cavity both ends and back sheet and at least one partition board in portion within the cavity；Wherein, partition board is parallel with superficial layer and back sheet, and has at least one through-hole on partition board.The utility model to be improved existing honeycomb in partition board of the cavity inside setting with through-hole by reducing noise intensity and noise frequency, making its acoustic feature closer to solid building materials, optimize user experience.
Description
Technical field
The utility model is related to a kind of cavity type interlayer metamaterial structures.
Background technology
The building material part of the existing interlayer containing aluminum honeycomb is as shown in Figure 1 normal cellular structure 10 in the prior art, with
Sheet surface layer 12, aluminum honeycomb 16, based on 14 structure of backer board, although the mechanical characteristics with light-high-strength, its structure feature
It by excitation cavity resonance and is generated sharp, clear for typical operatic tunes resonant structure when being tapped, trampling by outside, hit
Crisp, the loud sound that echoes causes noise jamming to user, and it is made to generate query for the safety of building materials, influences user's body
It tests.
For above-mentioned technical problem in the prior art, effective solution scheme is not yet proposed.
Utility model content
For the above problem in the related technology, the utility model proposes a kind of cavity type interlayer metamaterial structures, can
With better sound absorption performance and acoustic feature.
What the technical solution of the utility model was realized in：
One side according to the present utility model provides a kind of cavity type interlayer metamaterial structure, including：Hollow chamber
Body, the superficial layer for being located at cavity both ends and back sheet and at least one partition board in portion within the cavity；Wherein, partition board
It is parallel with superficial layer and back sheet, and there is at least one through-hole on partition board.
In one embodiment, cavity is prism shape.
In one embodiment, the quantity of partition board is one, and partition board has the first distance, partition board and back sheet with superficial layer
With second distance, the first distance is equal with second distance.
In one embodiment, on each partition board, the quantity of through-hole is one, and through-hole is located at the center of partition board.
In one embodiment, on each partition board, the quantity of through-hole is multiple, and multiple through-holes are around the center of partition board
It is evenly arranged.
In one embodiment, the shape of cavity is arbitrary among regular hexagonal prism, four-prism shape and regular triangular prism
It is a kind of.
In some embodiments, the height of cavity is within the scope of 10mm to 50mm.
In some embodiments, the thickness of partition board is within the scope of 0.1mm to 0.5mm, and the thickness of the peripheral wall of cavity is in 0.1mm
To 0.5mm.
In some embodiments, the radius of through-hole is in the range of 0.1mm to 1.5mm.
In some embodiments, the material of the peripheral wall of cavity is aluminium.
The utility model is by having the partition board of through-hole in cavity inside setting, to be carried out to existing honeycomb
It improves, reduces noise intensity and noise frequency, make its acoustic feature closer to solid building materials, optimize user experience.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of normal cellular structure in the prior art；
Fig. 2 is the schematic diagram according to the cavity type interlayer metamaterial structure of the utility model embodiment；
Fig. 3 is compared according to the cavity type interlayer metamaterial structure of the utility model embodiment and the audio spectrum of the prior art
Figure；
Fig. 4 is the resonant frequency and through-hole radius according to the cavity type interlayer metamaterial structure of the utility model embodiment
Ratio relation figure；
Fig. 5 is the resonant frequency and partition position according to the cavity type interlayer metamaterial structure of the utility model embodiment
Ratio relation figure；
Fig. 6 is the schematic diagram according to the cavity type interlayer metamaterial structure of the utility model another embodiment；
Fig. 7 is the schematic diagram according to the cavity type interlayer metamaterial structure of the utility model another embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the range of the utility model protection.
As shown in Fig. 2, the cavity type interlayer metamaterial structure of the utility model, including：Interlayer element 20, interlayer element 20
With cavity 22, be located at 22 both ends of cavity superficial layer 24 and back sheet 26 and inside cavity 22 at least one
A partition board 28；Wherein, partition board 28 is parallel with superficial layer 24 and back sheet 26, and has at least one through-hole 282 on partition board 28.
Above-mentioned technical proposal, by cavity inside setting with through-hole partition board, to existing honeycomb into
It has gone improvement, has reduced noise intensity and noise frequency, make its acoustic feature closer to solid building materials, optimize user's body
It tests.The cavity type interlayer metamaterial structure of the utility model possesses legacy cellular structure light wt, high intensity, fire-proof and damp-proof, corrosion resistant
The characteristics of erosion, is provided simultaneously with the acoustic feature better than legacy cellular structure.Using this structure as the interlayer of building material part, can make
Prefabricated component has excellent mechanical property, low cost, easily construction, environmental-friendly mounting means and excellent sound absorption work(
Can and similar to solid wall acoustic feature.The cavity type interlayer metamaterial structure of the utility model can be widely applied to multiple necks
Domain, such as the door-plate of building materials field, floor, non-load bearing wall etc., road isolation board, sound insulationg board etc., vehicle, train thistle board
Structure etc..
In some embodiments, the peripheral wall of cavity 22 is formed by aluminium.The peripheral wall of cavity 22 can also be according to actual
Applicable cases, the material for selecting other suitable are formed.
In some embodiments, cavity 22 is the cavity of prism shape.
In one embodiment, as shown in Fig. 2, cavity 22 is the honeycomb of regular hexagonal prism shape.Optionally, cavity 22
It can be quadrangular shape or be regular triangular prism shape.
Utility model people compared the cavity type interlayer metamaterial structure of the utility model and the normal cellular of the prior art
The sound spectrum of structure.Sound spectrum emulation for two kinds of structures, as shown in figure 3, the cavity type interlayer Meta Materials of the utility model
The resonant frequency of structure is greatly lowered, and the strength of resonance weakens.Showing when tapping sandwich plate, normal cellular interlayer sound point
It is sharp clear and melodious, and the structure sound of the utility model is relatively low heavy simple and honest, and sound is smaller, closer to solid construction.
By emulation, utility model people has studied influence of the structural parameters to sound spectrum resonant frequency.As shown in figure 4, through-hole
Pore radius it is smaller, resonant frequency is lower；As shown in figure 5, effect is identical when partition position is about central symmetry, and when partition board is got over
Close among honeycomb, resonant frequency is lower.To sum up, for aluminum honeycomb structure, centre addition center have micro-aperture (such as
The radius of through-hole is in the range of 0.1mm to 1.5mm) hard sheet, can most effectively reduce resonant frequency, improve acoustics
Feature.
Shown in Fig. 2, in one embodiment, the quantity of partition board 28 is one.Wherein, partition board 28 and superficial layer
24 there is the first distance z1, partition board 28 to have second distance z, the first distance z1 equal with second distance z with back sheet 26.Also
It is to say, a partition board 28 is located at the centre position of cavity 22.
In one embodiment, as shown in Fig. 2, on each partition board 28, the quantity of through-hole 282 is one.Wherein, when logical
When the quantity in hole 282 is one, through-hole 282 is located at the center of partition board 28.
In one embodiment, as shown in fig. 6, on each partition board 28, the quantity of through-hole 282 is multiple.Wherein, when logical
When the quantity in hole 282 is multiple, multiple through-holes 282 are to be evenly arranged around the center of partition board.
In one embodiment, as shown in fig. 7, the quantity of partition board 28 is multiple, multiple partition boards 28 can be in cavity 22
For be uniformly distributed or multiple partition boards 28 can in cavity 22 non-uniform Distribution.
It should be appreciated that the cavity type interlayer metamaterial structure of the utility model, such as the shape of prismatic cavity, partition board
The position of the quantity of through-hole on quantity, position, material and partition board, through-hole can carry out configuration and group according to practical situations
It closes.
In some embodiments, the height h of cavity 22 is within the scope of 10mm to 50mm.Preferably, the height h of cavity 22 is
10mm.Such configuration makes the cavity type interlayer metamaterial structure of the utility model, is ensureing to reduce noise intensity and noise
There is lower height while frequency.
In some embodiments, within the scope of 0.1mm to 0.5mm, thickness t's thickness of partition board 28 of the peripheral wall of cavity 22 exists
Within the scope of 0.1mm to 0.5mm.This makes cavity type interlayer metamaterial structure ensure to reduce the same of noise intensity and noise frequency
When, there is smaller block board thickness and cavity wall thickness, to which total quality will not be obviously increased, be easily installed.
In some embodiments, the radius of through-hole 282 is in the range of 0.1mm to 1.5mm.As described above, the half of through-hole
Diameter is smaller, more can effectively reduce resonant frequency.It is preferred, therefore, that the radius of through-hole 282 is 1mm, so as to effectively reduce
Resonant frequency, and convenient for manufacture.
In the embodiment shown in Figure 2, cavity 22 has the bottom surface of regular hexagon.Optionally, the length of side of bottom surface is in 5mm-
Within the scope of 15mm.
It should be appreciated that the size of interlayer element 20 can be configured according to practical situations difference, this practicality is new
Type is defined not to this.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of cavity type interlayer metamaterial structure, which is characterized in that including：Interlayer element, the interlayer element have cavity,
It is located at the superficial layer and back sheet and at least one partition board positioned at the inside cavity at the cavity both ends；
Wherein, the partition board is parallel with the superficial layer and the back sheet, and has at least one through-hole on the partition board.
2. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the cavity is prism shape.
3. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the quantity of the partition board is one
A, the partition board and the superficial layer have the first distance, and the partition board and the back sheet have a second distance, and described first
Distance is equal with the second distance.
4. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that described logical on each partition board
The quantity in hole is one, and the through-hole is located at the center of the partition board.
5. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that described logical on each partition board
The quantity in hole is multiple, and multiple through-holes are to be evenly arranged around the center of partition board.
6. cavity type interlayer metamaterial structure according to claim 2, which is characterized in that the shape of the cavity is positive six
Any one among prism, four-prism shape and regular triangular prism.
7. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the height of the cavity is in 10mm
To 50mm.
8. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the thickness of the partition board exists
Within the scope of 0.1mm to 0.5mm, the thickness of the peripheral wall of the cavity is within the scope of 0.1mm to 0.5mm.
9. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the radius of the through-hole exists
In the range of 0.1mm to 1.5mm.
10. cavity type interlayer metamaterial structure according to claim 1, which is characterized in that the material of the peripheral wall of the cavity
Material is aluminium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721800928.3U CN207905148U (en) | 2017-12-21 | 2017-12-21 | A kind of cavity type interlayer metamaterial structure |
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| CN201721800928.3U CN207905148U (en) | 2017-12-21 | 2017-12-21 | A kind of cavity type interlayer metamaterial structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944342A (en) * | 2017-12-21 | 2019-06-28 | 深圳光启尖端技术有限责任公司 | A kind of cavity type interlayer metamaterial structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944342A (en) * | 2017-12-21 | 2019-06-28 | 深圳光启尖端技术有限责任公司 | A kind of cavity type interlayer metamaterial structure |
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