CN202677822U - Sponge acoustical isolation baffle - Google Patents
Sponge acoustical isolation baffle Download PDFInfo
- Publication number
- CN202677822U CN202677822U CN2012202657762U CN201220265776U CN202677822U CN 202677822 U CN202677822 U CN 202677822U CN 2012202657762 U CN2012202657762 U CN 2012202657762U CN 201220265776 U CN201220265776 U CN 201220265776U CN 202677822 U CN202677822 U CN 202677822U
- Authority
- CN
- China
- Prior art keywords
- sponge
- sound
- isolation baffle
- rubber
- acoustical isolation
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Provided is a sponge acoustical isolation baffle, applicable to the water sound testing field. The sponge acoustical isolation baffle is characterized by comprising a sheet-shaped sponge (1), wherein the sponge is provided with multiple small holes (4); polyurethane entrant sound rubber (2) is arranged inside the small holes (4), inside the sponge (1), and outside the sponge (1); the polyurethane entrant sound rubber (2) fills the small holes (4) inside the sponge (1) and the gap and form a rubber layer outside the sponge (1). The sponge acoustical isolation baffle operates via the sound absorption mode. The acoustical isolation degree inside the band is 10 to15 dB. Meanwhile, the sponge acoustical isolation baffle does not lead to the directive distortion of the water sound transmitting transducer. The sponge acoustical isolation baffle features low cost, low weight, simple structure, and great effect and is capable of bearing certain hydrostatic pressure.
Description
Technical field
The present invention relates to a kind of sponge sound isolation baffle, be used for underwater sound field tests and use.
Background technology
In underwater sound field tests, usually can require simultaneously after taking quarantine measures proposing certain sound insulation request between underwater sound transmitting transducer and underwater sound receiving transducer, can not make the directive property of underwater acoustic transducer produce distortion.Existing sound isolation barrier plate structure is complicated, and it is bad to absorb sound, therefore, and the sound isolation baffle of a kind of mode work that absorbs sound of active demand invention.
Summary of the invention
The sound isolation baffle that a kind of acoustically effective of the design that order of the present invention has is good.
A kind of sponge sound isolation baffle is characterized in that, comprises the sheet sponge, in sponge a plurality of apertures are arranged, in aperture, in the sponge and have polyurethane sound transmitting rubber rubber, polyurethane sound transmitting rubber rubber to be filled in the aperture and space in the sponge outside the sponge, and sponge outside rubber layer of formation.
Be distributed with a plurality of Metallic rod in the described sponge.
Described sponge is round sheet thing, rectangle tablet or oval sheet thing.
The invention has the beneficial effects as follows: invented a kind of sponge sound isolation baffle, it is worked by the sound absorption mode, has the sound isolation of (10～15) dB in band, and it can not cause the distortion of underwater sound transmitting transducer directive property simultaneously.This kind sound isolation baffle with cheap, lightweight, simple in structure effectively and can anti-certain hydrostatic force etc. excellent properties.
Description of drawings
Fig. 1, the embodiment of the invention one structure cut-open view;
The A-A of Fig. 2, Fig. 1 cuts open figure;
Fig. 3, the embodiment of the invention two structure cut-open views;
The B-B cut-open view of Fig. 4, Fig. 3.
Wherein: 1, be sponge, 2, be polyurethane sound transmitting rubber rubber, 3, be Metallic rod, 4, be aperture.
Embodiment
A kind of sponge sound isolation baffle, it is characterized in that, comprise sheet sponge 1, in sponge a plurality of apertures 4 are arranged, in aperture 4, in the sponge 1 and polyurethane sound transmitting rubber rubber 2 arranged outside the sponge 1, polyurethane sound transmitting rubber rubber 2 is filled in the aperture 4 and space in the sponge 1, and at rubber layer of sponge 1 outer formation.
Be distributed with a plurality of Metallic rod 3 in the described sponge 1.
Described sponge 1 is round sheet thing, rectangle tablet or oval sheet thing.
Manufacturing process of the present invention is such: cut a sponge, draw out some circular holes in sponge; 2. sponge is put into casting mold, pour slowly the polyurethane sound transmitting rubber for preparing into, put into again baking oven and solidify.At this moment, the circular hole of drawing out in sponge is beneficial to polyurethane sound transmitting rubber uniformly penetrating in sponge, and these polyurethane sound transmitting rubbers can play the effect of support simultaneously, the resistance to hydrostatic pressure ability of raising sound isolation baffle; 3. the demoulding can make a kind of sponge sound isolation baffle.
Resistance to hydrostatic pressure ability to raising sound isolation baffle also can be processed by the following method: put into uniformly some metallic support round bars in sponge.
The soundproof theory of this kind sound isolation baffle is: polyurethane sound transmitting rubber and aqueous medium have good impedance matching, when polyurethane sound transmitting rubber parcel sponge, and when being full of uniformly the polyurethane sound transmitting rubber in the sponge, sound wave just can well import in the original hole of sponge, by rubbing action in porosint resonance absorption, the viscosity and elastic relaxation process, make acoustic energy well change into thermal effect and be absorbed.Thereby avoided the generation of reflective sound wave, can not make the directive property of underwater acoustic transducer produce distortion.1. cut a sponge, draw out some circular holes in sponge; 2. sponge is put into casting mold, pour slowly the polyurethane sound transmitting rubber for preparing into, put into again baking oven and solidify.At this moment, the circular hole of drawing out in sponge is beneficial to polyurethane sound transmitting rubber uniformly penetrating in sponge, and these polyurethane sound transmitting rubbers can play the effect of support simultaneously, the resistance to hydrostatic pressure ability of raising sound isolation baffle.Also can in sponge, put into uniformly the resistance to hydrostatic pressure ability of some metallic support round bar sound isolation baffles; 3. the demoulding can make a kind of sponge sound isolation baffle.
Embodiment one: by shown in Figure 1, a kind of sponge sound isolation baffle is formed by the sponge with the encapsulation of polyurethane sound transmitting rubber.Draw out some circular holes in sponge, be beneficial to polyurethane sound transmitting rubber uniformly penetrating in sponge, with the sound absorbing capabilities of raising sound isolation baffle.These polyurethane sound transmitting rubbers can play the effect of support simultaneously, the resistance to hydrostatic pressure ability of raising sound isolation baffle.
Embodiment two: by shown in Figure 2, different from embodiment one is to put into uniformly some metallic support round bars in sponge, the resistance to hydrostatic pressure ability of raising sound isolation baffle.
Invention provides a kind of sponge sound isolation baffle, and it is worked by the sound absorption mode, has the sound isolation of (10～15) dB in band, and it can not cause the distortion of underwater sound transmitting transducer directive property simultaneously.This kind sound isolation baffle with cheap, lightweight, simple in structure effectively and can anti-certain hydrostatic force etc. excellent properties, can well be used in the underwater sound field tests.
Claims (3)
1. a sponge sound is isolated baffle, it is characterized in that, comprise sheet sponge (1), in sponge a plurality of apertures (4) are arranged, in aperture (4), in the sponge (1) and outside the sponge (1) polyurethane sound transmitting rubber rubber (2) is arranged, polyurethane sound transmitting rubber rubber (2) is filled in sponge (1) the interior aperture (4) and space, and forms a rubber layer outside sponge (1).
2. a kind of sponge sound isolation baffle according to claim 1 is characterized in that, is distributed with a plurality of Metallic rod (3) in the described sponge (1).
3. a kind of sponge sound isolation baffle according to claim 1 is characterized in that described sponge (1) is round sheet thing, rectangle tablet or oval sheet thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202657762U CN202677822U (en) | 2012-06-07 | 2012-06-07 | Sponge acoustical isolation baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202657762U CN202677822U (en) | 2012-06-07 | 2012-06-07 | Sponge acoustical isolation baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677822U true CN202677822U (en) | 2013-01-16 |
Family
ID=47498708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202657762U Expired - Fee Related CN202677822U (en) | 2012-06-07 | 2012-06-07 | Sponge acoustical isolation baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058213A (en) * | 2019-04-03 | 2019-07-26 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Adjustable degree of being acoustically separated from test macro and method |
-
2012
- 2012-06-07 CN CN2012202657762U patent/CN202677822U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058213A (en) * | 2019-04-03 | 2019-07-26 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Adjustable degree of being acoustically separated from test macro and method |
| CN110058213B (en) * | 2019-04-03 | 2021-05-11 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Adjustable acoustic isolation testing system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105845121B (en) | It insulates against sound through-flow and augmentation of heat transfer acoustic metamaterial unit, composite construction and preparation | |
| CN102094922B (en) | Porous rubber material member and full-frequency range vibration acoustical property analysis method thereof | |
| CN105118496A (en) | Acoustic meta-material basic structure unit, composite structure thereof, and assembly method | |
| WO2011031794A3 (en) | Inverse horn loudspeakers | |
| CN108847211A (en) | A kind of acoustic construction and its design method | |
| JP2012531629A5 (en) | ||
| CN113096626A (en) | Silent box | |
| CN204131714U (en) | Loud speaker module | |
| CN102044239A (en) | Micro-perforated plate with resonant sound absorption structure | |
| CN103971671A (en) | Composite low-frequency resonance sound absorption structure | |
| CN105006226A (en) | Cylindrical cavity combination sound-absorbing coating | |
| CN101908338B (en) | Novel low-frequency sound insulating material | |
| CN202677822U (en) | Sponge acoustical isolation baffle | |
| CN201450572U (en) | Sound box | |
| CN203834714U (en) | Sound insulation building board | |
| CN105118497A (en) | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus | |
| CN203895113U (en) | Composite low frequency resonance sound absorption structure | |
| CN102078236B (en) | External auditory canal silencing ear plugs | |
| CN105989829A (en) | Multi-layer diaphragm type composite resonance sound absorption module | |
| CN105620697A (en) | Multilayer material combined cavity anechoic tile | |
| CN205033651U (en) | Compound sound insulation board of viscoplasticity | |
| CN201576548U (en) | Denoise structure of power transformer | |
| CN116834390A (en) | Wide low-frequency sound absorption vibration reduction coating structure and design method | |
| CN201486074U (en) | Acoustic board | |
| CN101540166A (en) | Foamed aluminium plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130116 Termination date: 20170607 |