CN201372493Y - Anechoic chamber - Google Patents
Anechoic chamber Download PDFInfo
- Publication number
- CN201372493Y CN201372493Y CN200820203630U CN200820203630U CN201372493Y CN 201372493 Y CN201372493 Y CN 201372493Y CN 200820203630 U CN200820203630 U CN 200820203630U CN 200820203630 U CN200820203630 U CN 200820203630U CN 201372493 Y CN201372493 Y CN 201372493Y
- Authority
- CN
- China
- Prior art keywords
- compartment
- radio wave
- anechoic chamber
- wave signal
- floor
- 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
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses an anechoic chamber which is provided with a first compartment, a second compartment, a wire casing pipe, a metal isolation layer and a radio wave signal obstruction metal pipe. The second compartment is arranged inside the first compartment; the first compartment and the second compartment are both made of sound insulation materials; the wire casing pipe penetrates through the first compartment; the metal isolation layer is arranged in the second compartment; the radio wave signal obstruction metal pipe penetrates through the second compartment, is arranged opposite to the wire casing pipe and is electrically connected to the metal isolation layer; and the metal isolation layer and the radio wave signal obstruction metal pipe are grounded. Therefore, the metal isolation layer and the radio wave signal obstruction metal pipe of the anechoic chamber can isolate external radio wave signals so as to ensure that a radiophonic product inside the anechoic chamber can be free of the interference of the external radio wave signals and further improve the accuracy of sound quality testing data of the radiophonic product.
Description
Technical field
The utility model relates to a kind of anechoic chamber, relates in particular to a kind of anechoic chamber of isolating exterior radio wave signal.
Background technology
Along with the lifting of living standard, the customer more and more pays attention to enjoyment acoustically, so various dissimilar electro-acoustic products are constantly weeded out the old and bring forth the new, for example: earphone and loudspeaker etc.Existing electro-acoustic product can connect the sound playing main frame via holding wire, for example, and walkman, sound equipment etc.The voice signal that the sound playing main frame produces is delivered to electro-acoustic product via holding wire, and electro-acoustic product changes into sound playing with this voice signal and goes out.In order to ensure the sound playing quality of electro-acoustic product, most electro-acoustic product manufacturer must deliver to electro-acoustic product anechoic chamber and do various tests, if after electro-acoustic product meets testing requirement, could peddle on the market.
See also Fig. 2, it is the sectional drawing of general anechoic chamber 9, this anechoic chamber 9 comprises that first compartment 90 and second compartment, 91, the first compartments 90 comprise outer noise barrier 900, internal layer noise barrier 901 and the sound-absorbing element 902 in the middle of outer noise barrier 900 and internal layer noise barrier 901.Second compartment 91 comprises outer noise barrier 910, internal layer noise barrier 911, the sound-absorbing element 912 in the middle of outer noise barrier 910 and internal layer noise barrier 911 and is fixed in sound-absorbing wedge 913 on the internal layer noise barrier 911.
Bottoms in first compartment 90 are provided with shock absorber 92, the first compartments, 90 inside portions in the middle of first compartment 90 and second compartment 91 and top and are provided with sound-absorbing element 93 between first compartment 90 and second compartment, 91 centres.When electro-acoustic product is positioned over 91 close betas of second compartment, sound-absorbing wedge 913 can absorb the reflective sound wave of second compartment, 91 inside, shock absorber 92 can absorb outside vibrations, sound-absorbing element 93 in the middle of first compartment 90 and first compartment 90 and second compartment 91 can absorb outside noise, to guarantee the accuracy of test data.
But, the transfer mode of voice signal becomes the radio wave signal transmission from wire transmission now, general anechoic chamber 9 can't completely cut off external wireless electric wave signal, when wireless electro-acoustic product is positioned over anechoic chamber 9 when testing, to be subjected to the interference of external wireless electric wave signal, make the sound quality test data produce error.
The utility model content
But main purpose of the present utility model is to provide at above-mentioned the deficiencies in the prior art the anechoic chamber of isolating exterior radio wave signal.
For achieving the above object, the utility model provides first kind of anechoic chamber to comprise first compartment, is arranged at second compartment, wire casing pipe, metallic spacer and radio wave signal barrier metal pipe in first compartment, first compartment and second compartment are made up of the sound insulation material, the wire casing pipe runs through first compartment, metallic spacer is arranged among second compartment, radio wave signal barrier metal pipe and wire casing pipe are oppositely arranged and run through second compartment, and being electrically connected to metallic spacer, metallic spacer and radio wave signal barrier metal pipe are connected to ground connection again.
Described first compartment is provided with an outer floor, an outer ceiling and an external wall, second compartment is provided with floor in, an interior ceiling and an inside wall, and outer floor, outer ceiling, external wall, interior floor, interior ceiling and inside wall include an outer noise barrier, the sound-absorbing element of an internal layer noise barrier and in the middle of outer noise barrier and internal layer noise barrier; Metallic spacer is arranged at layer noise barrier inboard within second compartment, and the metallic spacer inboard is provided with a plurality of sound-absorbing wedges; Be provided with a shock absorber in the middle of outer floor and the interior floor, be provided with a sound-absorbing element in the middle of outer ceiling and the interior ceiling and in the middle of external wall and the inside wall.
The length of described radio wave signal barrier metal pipe is at least 3 times of internal diameter.
Described first compartment is provided with the metallic spacer that is connected to ground connection, and described wire casing pipe is made up of metal material, and electrically connects the metallic spacer of first compartment, and the length of wire casing pipe is at least 3 times of internal diameter.
For achieving the above object, the utility model provides second kind of anechoic chamber to comprise first compartment, is arranged at second compartment, wire casing pipe, metallic spacer and radio wave signal barrier metal pipe in first compartment, first compartment and second compartment are made up of the sound insulation material, the wire casing pipe runs through second compartment, metallic spacer is arranged among first compartment, radio wave signal barrier metal pipe and wire casing pipe are oppositely arranged and run through first compartment, and being electrically connected to metallic spacer, metallic spacer and radio wave signal barrier metal pipe are connected to ground connection again.
Described first compartment is provided with an outer floor, an outer ceiling and an external wall, and second compartment is provided with floor in, an interior ceiling and an inside wall; Outer floor, outer ceiling, external wall, interior floor, interior ceiling and inside wall include an outer noise barrier, the sound-absorbing element of an internal layer noise barrier and in the middle of outer noise barrier and internal layer noise barrier; The internal layer noise barrier of second compartment is provided with a plurality of sound-absorbing wedges, is provided with a shock absorber in the middle of outer floor and the interior floor, is provided with a sound-absorbing element in the middle of outer ceiling and the interior ceiling and in the middle of side wall and the inside wall.
The length of described radio wave signal barrier metal pipe is at least 3 times of internal diameter.
Described second compartment is provided with the metallic spacer that is connected to ground connection, and described wire casing pipe is made up of metal material, and electrically connects the metallic spacer of second compartment, and the length of wire casing pipe is at least 3 times of internal diameter.
The metallic spacer of described second compartment is arranged at the internal layer noise barrier inboard of second compartment.
The utility model anechoic chamber is connected to ground connection by metallic spacer and radio wave signal barrier metal pipe, with the isolating exterior radio wave signal, make wireless electro-acoustic product in the anechoic chamber avoid the interference of external wireless electric wave signal, improve the accuracy of sound quality test data.
Description of drawings
In Figure of description:
Fig. 1 is the sectional drawing of the utility model anechoic chamber.
Fig. 2 is the sectional drawing of existing anechoic chamber.
The description of reference numerals of each element is as follows among the figure:
Anechoic chamber's 100 first compartments 1
Sound-absorbing element 16,25,4 second compartments 2
Ceiling 21 in the interior floor 20
Inside wall 22
Radio wave signal barrier metal pipe 23
Shock absorber 3
The specific embodiment
Followingly describe technology contents of the present invention, structural feature, the purpose that realizes and effect in detail with reference to embodiment and conjunction with figs..
See also Fig. 1, it is the sectional drawing of the utility model anechoic chamber 100, anechoic chamber 100 comprises first compartment 1 and second compartment 2 that is arranged in first compartment 1, in the present embodiment, first compartment 1 and second compartment, 2 outsides all are cube-shaped, when real enforcement, first compartment 1 and second compartment 2 can be arbitrary shape.
First compartment 1 comprises outer floor 10, outer ceiling 11, external wall 12 and wire casing pipe 13, outer floor 10, outer ceiling 11 and external wall 12 all are made up of outer noise barrier 14, internal layer noise barrier 15 and the sound-absorbing element 16 in the middle of outer noise barrier 14 and internal layer noise barrier 15, in the present embodiment, outer noise barrier 14 is a wooden walls with internal layer noise barrier 15.Wire casing pipe 13 runs through first compartment 1, and in the present embodiment, wire casing pipe 13 runs through the external wall 12 of first compartment 1, and when real enforcement, wire casing pipe 13 can run through the outer floor 10 or the outer ceiling 11 of first compartment 1.
The bottom of first compartment 1 is provided with shock absorber 3 in the middle of the interior floor 20 of the outer floor 10 and second compartment 2, be provided with sound-absorbing element 4 in the middle of the outer ceiling 11 of first compartment 1 and the ceiling of second compartment 2 21 and in the middle of the inside wall 22 of the external wall 12 of first compartment 1 and second compartment 2, in the present embodiment, shock absorber 3 is made up of the rubber material.
When wireless electro-acoustic product (not shown) is positioned over second compartment, 2 close betas of anechoic chamber 100, test data sees through test signal line (not shown) and is connected to external testing main frame (not shown), in the present embodiment, the test signal line passes the radio wave signal barrier metal pipe 23 of second compartment 2 and the wire casing pipe 13 of first compartment 1 is connected to the external testing main frame.Sound-absorbing wedge 28 can absorb the reflective sound wave of second compartment, 2 inside.Shock absorber 3 in the middle of first compartment 1 and second compartment 2 can absorb outside vibrations, guarantees that the test data of wireless electro-acoustic product is not influenced by exterior vibration.Sound-absorbing element 4 in the middle of first compartment 1 and second compartment 2 can absorb outside noise, to guarantee the accuracy of sound quality test data.
When real enforcement, metallic spacer 27 can be arranged at outer noise barrier 24 outsides of second compartment 2.In addition, the outer floor 10 of first compartment 1, outer ceiling 11 and external wall 12 also can be provided with metallic spacer, and when first compartment 1 was provided with metallic spacer, the wire casing pipe 13 of first compartment 1 was necessary for radio wave signal barrier metal pipe.
The utility model anechoic chamber 100 is connected to ground connection via the metallic spacer 27 and the radio wave signal barrier metal pipe 23 of second compartment 2, with the isolating exterior radio wave signal, can make wireless electro-acoustic products in the anechoic chamber 100 avoid the interference of external wireless electric wave signal, improve the accuracy of sound quality test data.
Claims (9)
1. anechoic chamber comprises the wire casing pipe that one first compartment be made up of the sound insulation material and one second compartment and run through first compartment, and second compartment is arranged in first compartment; It is characterized in that: second compartment is provided with a metallic spacer and a radio wave signal barrier metal pipe that is connected to ground connection, and radio wave signal barrier metal pipe and wire casing pipe are oppositely arranged, and run through second compartment, and are electrically connected to metallic spacer.
2. anechoic chamber according to claim 1, it is characterized in that: described first compartment is provided with an outer floor, an outer ceiling and an external wall, second compartment is provided with floor in, an interior ceiling and an inside wall, and outer floor, outer ceiling, external wall, interior floor, interior ceiling and inside wall include an outer noise barrier, the sound-absorbing element of an internal layer noise barrier and in the middle of outer noise barrier and internal layer noise barrier; Metallic spacer is arranged at layer noise barrier inboard within second compartment, and the metallic spacer inboard is provided with a plurality of sound-absorbing wedges; Be provided with a shock absorber in the middle of outer floor and the interior floor, be provided with a sound-absorbing element in the middle of outer ceiling and the interior ceiling and in the middle of external wall and the inside wall.
3. anechoic chamber according to claim 2 is characterized in that: the length of described radio wave signal barrier metal pipe is at least 3 times of internal diameter.
4. anechoic chamber according to claim 1, it is characterized in that: described first compartment is provided with the metallic spacer that is connected to ground connection, described wire casing pipe is made up of metal material, and electrically connects the metallic spacer of first compartment, and the length of wire casing pipe is at least 3 times of internal diameter.
5. anechoic chamber comprises the wire casing pipe that one first compartment be made up of the sound insulation material and one second compartment and run through second compartment; It is characterized in that: first compartment is provided with a metallic spacer and a radio wave signal barrier metal pipe that is connected to ground connection, and radio wave signal barrier metal pipe and wire casing pipe are oppositely arranged, and run through first compartment, and are electrically connected to metallic spacer.
6. anechoic chamber according to claim 5 is characterized in that: described first compartment is provided with an outer floor, an outer ceiling and an external wall, and second compartment is provided with floor in, an interior ceiling and an inside wall; Outer floor, outer ceiling, external wall, interior floor, interior ceiling and inside wall include an outer noise barrier, the sound-absorbing element of an internal layer noise barrier and in the middle of outer noise barrier and internal layer noise barrier; The internal layer noise barrier of second compartment is provided with a plurality of sound-absorbing wedges, is provided with a shock absorber in the middle of outer floor and the interior floor, is provided with a sound-absorbing element in the middle of outer ceiling and the interior ceiling and in the middle of side wall and the inside wall.
7. anechoic chamber according to claim 6 is characterized in that: the length of described radio wave signal barrier metal pipe is at least 3 times of internal diameter.
8. anechoic chamber according to claim 5, it is characterized in that: described second compartment is provided with the metallic spacer that is connected to ground connection, described wire casing pipe is made up of metal material, and electrically connects the metallic spacer of second compartment, and the length of wire casing pipe is at least 3 times of internal diameter.
9. anechoic chamber according to claim 8 is characterized in that: the metallic spacer of described second compartment is arranged at the internal layer noise barrier inboard of second compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820203630U CN201372493Y (en) | 2008-11-14 | 2008-11-14 | Anechoic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820203630U CN201372493Y (en) | 2008-11-14 | 2008-11-14 | Anechoic chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372493Y true CN201372493Y (en) | 2009-12-30 |
Family
ID=41498573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820203630U Expired - Fee Related CN201372493Y (en) | 2008-11-14 | 2008-11-14 | Anechoic chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372493Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839844A (en) * | 2012-09-04 | 2012-12-26 | 大连东信微波吸收材料有限公司 | Microwave anechoic chamber for intermodulation test |
| CN106454680A (en) * | 2016-11-23 | 2017-02-22 | 吟飞科技(江苏)有限公司 | Test field for speaker sound and testing method |
-
2008
- 2008-11-14 CN CN200820203630U patent/CN201372493Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839844A (en) * | 2012-09-04 | 2012-12-26 | 大连东信微波吸收材料有限公司 | Microwave anechoic chamber for intermodulation test |
| CN102839844B (en) * | 2012-09-04 | 2015-01-21 | 大连东信微波吸收材料有限公司 | Microwave anechoic chamber for intermodulation test |
| CN106454680A (en) * | 2016-11-23 | 2017-02-22 | 吟飞科技(江苏)有限公司 | Test field for speaker sound and testing method |
| CN106454680B (en) * | 2016-11-23 | 2019-05-03 | 吟飞科技(江苏)有限公司 | The checkout area and test method of loudspeaker sound |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105257282A (en) | Acoustic logging-while-drilling transmitting unit and device thereof | |
| CN102726064B (en) | Ultrasonic vibration device | |
| CN201262504Y (en) | Surface-sounding refrigerator | |
| US9774936B2 (en) | Audio systems for generating sound on personal watercraft and other recreational vehicles | |
| KR20170054963A (en) | Interlayer noise reduction device using a concurrently generating offset vibration | |
| CN201372493Y (en) | Anechoic chamber | |
| CN106101954A (en) | Loudspeaker enclosure and there is the electronic equipment of this loudspeaker enclosure | |
| CN103474057A (en) | Silencing chamber | |
| CN107071682B (en) | Loudspeaker testing device | |
| CN203482393U (en) | Audio frequency curve testing sound box | |
| CN102750945A (en) | Silence chamber | |
| CN202736473U (en) | Noise abatement case | |
| CN204616050U (en) | Loud speaker module | |
| CN104457970B (en) | A kind of half silencer box of broadband measurement | |
| CN210137449U (en) | Sound silencing box | |
| CN203966545U (en) | Silencer box for equipment audio detection | |
| PL1851991T3 (en) | Loudspeaker cabinet and reproduction system | |
| CN208258080U (en) | A kind of Acoustic test box of high oise insulation factor | |
| CN2504863Y (en) | Loudspeaker box structure | |
| CN102175465A (en) | Sound source used for testing transfer function of exhaust system of vehicle | |
| CN207638826U (en) | Microphone | |
| CN201332499Y (en) | Novel audio frequency converter | |
| CN107843929A (en) | A kind of sound insulating structure being used in acoustic logging | |
| CN207474069U (en) | Sound panel and sound attenuator | |
| CN212010355U (en) | Light sound-proof box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20121114 |