CN203846630U - Sound absorption wedge - Google Patents
Sound absorption wedge Download PDFInfo
- Publication number
- CN203846630U CN203846630U CN201320384922.8U CN201320384922U CN203846630U CN 203846630 U CN203846630 U CN 203846630U CN 201320384922 U CN201320384922 U CN 201320384922U CN 203846630 U CN203846630 U CN 203846630U
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- Prior art keywords
- sound absorption
- wedge absorber
- sound
- wedge
- utility
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a sound absorption wedge. The sound absorption wedge comprises a protective face and sound absorption materials filled in the protective face. The protective face comprises a flexible fiber mat, a metal perforated plate and a melamine sponge layer. Compared with the prior art, the sound absorption wedge is advantaged by high rigidity, non-ignitibility, attractive appearance and the like, reflection to high-frequency sound is greatly reduced and a good acoustics environment is ensured.
Description
Technical field
The utility model relates to acoustic technique field, and is particularly related to a kind of wedge absorber.
Background technology
Sound attenuation room is that acoustics is tested the specialized laboratory using, its be widely used in automobile, Aero-Space, household electrical appliance, computer and communicate by letter, the every field such as industrial products, product is carried out to noise testing and acoustics feature measurement.In this enclosure space of sound attenuation room, set up free found field, the sound wave in this space can infinitely be extended to all directions, even if the acoustic energy of sound source radiation " freedom " is propagated, both reflections of clear, also without the interference of ambient noise.In order to reach described sound attenuation room condition, often on indoor each interface, configure strong sound absorption material, the sound wave that is incident in interface is almost completely absorbed within the scope of certain frequency, conventionally require sound absorption coefficient to be not less than 99%.The most conventional sound absorption material configuration mode is wedge absorber structure at present.
Wedge absorber is applied transition principle gradually, and porosity (or fibroid) material is done to tapered or wedgelike sound absorber.Thereby when sound wave is during from most advanced and sophisticated incident, due to the transition nature gradually of sound absorbing layer, the acoustic impedance of material can be mated preferably with the acoustic impedance of air, sound wave can better be propagated in sound absorber, and absorbed efficiently.
More existing wedge absorbers by framework, be filled in the sound absorption material in framework and the shortcoming such as the armour layer that is coated on outside framework forms, and its armour layer often adopts flexible gauze material to make, and it exists intensity low, and fire line is weak.And also have some wedge absorbers to adopt perforated metal panel to replace flexible gauze material to make the mask of wedge absorber, although it has the advantages such as good fireproof, intensity be high, attractive in appearance, but it has larger reflex to high-frequency sound, can cause adverse effect to acoustic enviroment.
For this reason, produce and both there is wedge absorber in prior art, also avoid the wedge absorber of shortcoming of the prior art to become industry problem demanding prompt solution.
Utility model content
The utility model is intended to solve in prior art, and wedge absorber intensity is low, fire line weak, sound reflection is broken to the technical problems such as surround field.
In view of this, the utility model provides a kind of wedge absorber, comprises mask and is filled in the sound absorption material in mask, and it is characterized in that, described mask comprises: flexible fiber felt, perforated metal panel and melamine layer.
Further, described melamine spongy layer is Atria poly cyanamid spongy layer.
Further, described melamine spongy layer is arranged at the tip of described wedge absorber.
Further, described sound absorption material is the cotton layer of sound absorption.
In sum, the wedge absorber that the utility model provides, compared to wedge absorber in prior art, not only has that intensity is high, a non-ignitibility, the advantage such as attractive in appearance, and has greatly subdued the reflection to high-frequency sound, has ensured good acoustic enviroment.
Brief description of the drawings
Figure 1 shows that the structural representation of the wedge absorber that the utility model one embodiment provides.
Detailed description of the invention
In prior art, the wedge absorber adopting in anechoic chamber, due to the deficiency in design, causes wedge absorber to have the technical problems such as intensity is low, poor fire, high-frequency sound reflections affect acoustic enviroment.The mask of wedge absorber is designed to composite construction by the utility model, comprise: flexible fiber felt, perforated metal panel and fire lagging, thereby reached both have that intensity is high, non-ignitibility, the advantage such as attractive in appearance, and greatly subdued the reflection to high-frequency sound, ensured good acoustic enviroment.
For the purpose of this utility model, feature are become apparent, below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further described.
Refer to Fig. 1, it is depicted as the structural representation of the wedge absorber that the utility model one embodiment provides.
This wedge absorber, comprises mask 100 and is filled in the sound absorption material 200 in mask, wherein said mask 100 comprises: flexible fiber felt 110, perforated metal panel 120 and melamine layer 130.
There is the wedge absorber of above-mentioned mask, owing to adopting perforated metal panel 120 as mask, therefore its intensity is high, and owing to being provided with flexible fiber felt 110 at perforated metal panel 120, thereby avoid high-frequency sound directly to propagate on perforated metal panel 120 and produced high-frequency sound reflection, in addition, mask is also taked melamine layer 130, makes it have good fireproof performance.
In the utility model embodiment, described melamine spongy layer 130 is Atria poly cyanamid spongy layer.
Further, described melamine spongy layer 130 is arranged at the tip of described wedge absorber.Because the cotton layer of sound absorption is more open, wedge absorber tip cannot be filled closely knit, adopts 130 to be easy to moulding, has made up this defect.
In the utility model embodiment, described sound absorption material 200 is the cotton layer of sound absorption.But the utility model is as limit, those skilled in the art also can adopt other sound absorption materials.
In sum, the wedge absorber that the utility model embodiment provides, compared to wedge absorber in prior art, not only has that intensity is high, a non-ignitibility, the advantage such as attractive in appearance, and has greatly subdued the reflection to high-frequency sound, has ensured good acoustic enviroment.
Although the utility model discloses as above with preferred embodiment; so it is not in order to limit the utility model; under any, in technical field, have and conventionally know the knowledgeable; not departing from spirit and scope of the present utility model; when being used for a variety of modifications and variations, therefore protection domain of the present utility model is when being as the criterion depending on claims person of defining.
Claims (4)
1. a wedge absorber, comprises mask and is filled in the sound absorption material in mask, and it is characterized in that, described mask comprises: flexible fiber felt, perforated metal panel and melamine spongy layer.
2. wedge absorber according to claim 1, is characterized in that, described melamine spongy layer is Atria poly cyanamid spongy layer.
3. wedge absorber according to claim 1, is characterized in that, described melamine spongy layer is arranged at the tip of described wedge absorber.
4. wedge absorber according to claim 1, is characterized in that, described sound absorption material is the cotton layer of sound absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384922.8U CN203846630U (en) | 2013-06-28 | 2013-06-28 | Sound absorption wedge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320384922.8U CN203846630U (en) | 2013-06-28 | 2013-06-28 | Sound absorption wedge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203846630U true CN203846630U (en) | 2014-09-24 |
Family
ID=51559666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320384922.8U Expired - Lifetime CN203846630U (en) | 2013-06-28 | 2013-06-28 | Sound absorption wedge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203846630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334506A (en) * | 2013-06-28 | 2013-10-02 | 上海声望声学工程有限公司 | Wedge absorber |
| CN105155704A (en) * | 2015-06-19 | 2015-12-16 | 江苏英思达科技有限公司 | Double-layer metal wedge and manufacturing method thereof |
-
2013
- 2013-06-28 CN CN201320384922.8U patent/CN203846630U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334506A (en) * | 2013-06-28 | 2013-10-02 | 上海声望声学工程有限公司 | Wedge absorber |
| CN105155704A (en) * | 2015-06-19 | 2015-12-16 | 江苏英思达科技有限公司 | Double-layer metal wedge and manufacturing method thereof |
| CN105155704B (en) * | 2015-06-19 | 2018-05-29 | 江苏英思达科技有限公司 | A kind of double-level-metal wedge and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 200336, room 607-608, Tian Rui building, 31 Shuangliu Road, Shanghai, Changning District Patentee after: SHANGHAI SHENGWANG ACOUSTICS TECHNOLOGY Co.,Ltd. Address before: 200335, room 31, 608 Shuangliu Road, Shanghai, Changning District Patentee before: SHANGHAI SHENGWANG ACOUSTICS ENGINEERING Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
|
| CX01 | Expiry of patent term |