CN204119468U - The testing apparatus of a kind of sound proof box and this sound proof box of application - Google Patents
The testing apparatus of a kind of sound proof box and this sound proof box of application Download PDFInfo
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- CN204119468U CN204119468U CN201420513869.1U CN201420513869U CN204119468U CN 204119468 U CN204119468 U CN 204119468U CN 201420513869 U CN201420513869 U CN 201420513869U CN 204119468 U CN204119468 U CN 204119468U
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- outer case
- sound proof
- proof box
- box
- internal box
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 238000013016 damping Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 230000035939 shock Effects 0.000 claims abstract description 8
- 239000007769 metal material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000000644 propagated effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides the testing apparatus of a kind of sound proof box and this sound proof box of application, the structure that wherein sound proof box employing outer case is nested with internal box, use isolation cushion to support between two casings, isolation cushion effectively can eliminate the impact of outer case physical shock on internal box.Cavity during use between interior outer case is vacuum state, and sound can not be propagated in a vacuum, so effectively can completely cut off external voice; Simultaneously the damping chain of testing apparatus and beam also effectively reduce the impact of vibrations on sound proof box, thus well achieve the object of testing microphone SNR.In addition, be that the cavity in Sound Attenuator between outer case is found time during test, instead of product be directly placed in vacuum environment and test, can effectively prevent from vacuumizing the damage to microphone products vibrating diaphragm; Testing apparatus of the present utility model can also be used for laboratory and produce the test that line realizes the performance parameters such as sensitivity of microphone, background noise, THD.
Description
Technical field
The utility model relates to electronic product technical field of measurement and test, particularly the testing apparatus of a kind of sound-proofing and this sound proof box of application.
Background technology
Along with increasing of consumer electronics function, more and more higher to the performance requirement of microphone monomer, the SNR of microphone requires to reach 70dB, and in current industry, each electroacoustic laboratory and product line are difficult to the microphone products SNR test realizing SNR signal to noise ratio >=70.
Utility model content
The utility model provides a kind of sound proof box and applies the testing apparatus of this sound proof box, to solve the problem that laboratory and product line are difficult to realize the microphone products SNR test of SNR signal to noise ratio >=70.
For achieving the above object, the utility model embodiment have employed following technical scheme:
The utility model provides a kind of sound proof box, comprise outer case, internal box and isolation cushion, described isolation cushion supports described internal box and is nested in described outer case, cavity is formed between described internal box and described outer case, cavity in described internal box is test inner chamber, described outer case comprises an outer case door, and described internal box comprises an internal box door, described outer case door and the setting all in T shape of described internal box door.
Preferably, described sound proof box also comprises venthole and air admission hole, the described cavity formed before making described internal box and described outer case when described venthole is for testing becomes vacuum chamber, and described air admission hole makes described cavity consistent with ambient pressure at the end of being used for test.
Preferably, described internal box and described outer case are metal material.
On the one hand, the utility model additionally provides a kind of testing apparatus applying above-mentioned sound proof box, described testing apparatus also comprises support, damping chain and beam, and described support is for hanging described sound proof box, described damping chain, for being hung on the bracket by described sound proof box, described damping chain can eliminate described support to shake the elastic construction had an impact to described sound proof box, described beam, for supporting described support, weaken the impact of earth shock on described support.
Preferably, described testing apparatus can meet the microphone products SNR test of SNR >=70.
Preferably, described testing apparatus can also be used for the test of sensitivity of microphone, background noise, total harmonic distortion.
The beneficial effect of the utility model embodiment is: the structure that sound proof box adopts outer case nested with internal box, and use isolation cushion to support between two casings, isolation cushion effectively can eliminate the impact of outer case physical shock on internal box.Cavity during use between interior outer case is vacuum state, and the T-shaped design of outer case door and internal box door can effective airtight outer case and internal box, and sound can not be propagated in a vacuum, so effectively can completely cut off external voice; Simultaneously the damping chain of testing apparatus and beam also effectively reduce the impact of vibrations on sound proof box, thus well achieve the object of testing microphone SNR.In addition, be that the cavity in Sound Attenuator between outer case is found time during test, instead of product be directly placed in vacuum environment and test, can effectively prevent from vacuumizing the damage to microphone products vibrating diaphragm.
The sound proof box that the utility model provides and the testing apparatus of this sound proof box of application effectively can eliminate the interference that external environment is tested microphone, except can realizing the test of microphone SNR >=70dB, in laboratory and the test that line realizes the performance parameters such as sensitivity of microphone, background noise, THD can also be produced.
Accompanying drawing explanation
The structural representation of a kind of sound proof box that Fig. 1 provides for the utility model;
A kind of sound proof box that Fig. 2 provides for the utility model is along the cutaway view of A line in Fig. 1;
A kind of structural representation applying the testing apparatus of sound proof box that Fig. 3 provides for the utility model;
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
Fig. 1 and Fig. 2 gives the structural representation of sound proof box provided by the utility model, described sound proof box comprises outer case 41, internal box 42 and isolation cushion 43, described isolation cushion 43 supports described internal box 42 and is nested in described outer case 41, cavity 411 is formed between described internal box 42 and described outer case 41, cavity in described internal box 42 is test inner chamber 421, described outer case 41 comprises an outer case door 412, described internal box 42 comprises an internal box door 422, described outer case door 412 and the setting all in T shape of described internal box door 422.In addition, described sound proof box also comprises venthole 44 and air admission hole 45, the described cavity 411 formed before making described internal box 42 and described outer case 41 when described venthole 44 is for testing becomes vacuum chamber, and described air admission hole 45, at the end of test, makes described cavity 411 consistent with ambient pressure.
When using described sound proof box, open outer case door 412 and internal box door 422 successively, product to be tested is put in test inner chamber 421, then internal box door 422 and outer case door 412 is closed successively, then vacuumized by venthole 44 pairs of cavitys 411, as shown in Figure 2, because outer case door 412 and internal box door 422 all adopt T-shaped setting, in cavity 411 in evacuating air process, air pressure in cavity 411 diminishes gradually, outer case door 412 and internal box door 422 are closed more closely, because sound can not be propagated in vacuum environment, so external voice can be completely cut off thoroughly, realize the object of sound insulation test.
Product because be vacuumized by the cavity 411 between outer case 41 and internal box 42, instead of be directly placed in vacuum environment and test by sound proof box provided by the utility model, can effectively prevent from vacuumizing the damage to product vibrating diaphragm.
Further, when practical application, described internal box 42 and described outer case 41 are metal material, can play electromagnetic shielding action like this, and reach above-mentioned technique effect.
Fig. 3 gives the structural representation of the testing apparatus of the above-mentioned sound proof box of application provided by the utility model, described testing apparatus comprises support 1, damping chain 2, beam 3 and above-mentioned sound proof box 4, described support 1 is for hanging described sound proof box 4, described damping chain 2, for described sound proof box 4 is suspended on described support 1, described damping chain 2 has elasticity, can effectively eliminate because described support 1 shakes impact on described sound proof box 4, described beam 3, for supporting described support 1, weakens the impact of earth shock on described support 1.
Testing apparatus provided by the utility model by sound proof box 4 by elastic shock attenuation chain 2 be suspended on support 1 effectively can be eliminated ground or supporter vibrations on the impact of sound proof box 4, beam 3 also weakens the impact of earth shock on described support 1 simultaneously, thus more effective being supplied to tests the stable test environment of inner chamber 421 1.
It should be noted that, the testing apparatus that the utility model provides can meet the microphone products SNR test of SNR >=70, can also be used for the test of sensitivity of microphone, background noise, total harmonic distortion simultaneously.
In sum, the utility model provides the testing apparatus of a kind of sound proof box and this sound proof box of application, the structure that wherein sound proof box employing outer case is nested with internal box, use isolation cushion to support between two casings, isolation cushion effectively can eliminate the impact of outer case physical shock on internal box.Cavity during use between interior outer case is vacuum state, and the T-shaped design of outer case door and internal box door can effective airtight outer case and internal box, and sound can not be propagated in a vacuum, so effectively can completely cut off external voice; Simultaneously the damping chain of testing apparatus and beam also effectively reduce the impact of vibrations on sound proof box, thus well achieve the object of testing microphone SNR.In addition, be that the cavity in Sound Attenuator between outer case is found time during test, instead of product be directly placed in vacuum environment and test, can effectively prevent from vacuumizing the damage to microphone products vibrating diaphragm; Testing apparatus of the present utility model can also be used for laboratory and produce the test that line realizes the performance parameters such as sensitivity of microphone, background noise, THD.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection range of the present utility model.
Claims (5)
1. a sound proof box, it is characterized in that, comprise outer case, internal box and isolation cushion, described isolation cushion supports described internal box and is nested in described outer case, form cavity between described internal box and described outer case, the cavity in described internal box is test inner chamber, and described outer case comprises an outer case door, described internal box comprises an internal box door, described outer case door and the setting all in T shape of described internal box door.
2. sound proof box according to claim 1, it is characterized in that, described sound proof box also comprises venthole and air admission hole, the described cavity formed before making described internal box and described outer case when described venthole is for testing becomes vacuum chamber, described air admission hole makes described cavity consistent with ambient pressure at the end of being used for test.
3. sound proof box according to claim 1, is characterized in that, described internal box and described outer case are metal material.
4. the testing apparatus of sound proof box as described in an application claim as arbitrary in claims 1 to 3, it is characterized in that, described testing apparatus also comprises support, damping chain and beam, described support is for hanging described sound proof box, described damping chain, for described sound proof box is hung on the bracket, described damping chain can eliminate described support to shake the elastic construction had an impact to described sound proof box, described beam, for supporting described support, weaken the impact of earth shock on described support.
5. testing apparatus according to claim 4, is characterized in that, described testing apparatus can meet the microphone products SNR test of SNR >=70.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513869.1U CN204119468U (en) | 2014-09-07 | 2014-09-07 | The testing apparatus of a kind of sound proof box and this sound proof box of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513869.1U CN204119468U (en) | 2014-09-07 | 2014-09-07 | The testing apparatus of a kind of sound proof box and this sound proof box of application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204119468U true CN204119468U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420513869.1U Expired - Lifetime CN204119468U (en) | 2014-09-07 | 2014-09-07 | The testing apparatus of a kind of sound proof box and this sound proof box of application |
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| CN (1) | CN204119468U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349263A (en) * | 2014-09-07 | 2015-02-11 | 歌尔声学股份有限公司 | Sound-insulating box, testing device applying same and testing method thereof |
| 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 |
| CN108387644A (en) * | 2018-03-07 | 2018-08-10 | 佛山市诺瓦安评检测有限公司 | The anti-acoustic capability test device and test method of industrial noise protective earplug |
| CN108880077A (en) * | 2018-07-20 | 2018-11-23 | 芜湖新瑟安智能科技有限公司 | A kind of sound arrester and its control method based on household electric power generator |
| CN110672727A (en) * | 2019-10-21 | 2020-01-10 | 中铁第四勘察设计院集团有限公司 | A kind of building material structure performance testing device |
| CN112839291A (en) * | 2020-12-24 | 2021-05-25 | 佳禾智能科技股份有限公司 | A device and test method for testing microphone negative pressure to generate pop sound |
| US11432068B2 (en) | 2018-06-13 | 2022-08-30 | Hewlett-Packard Development Company, L.P. | Vacuum-based microphone sensor controller and indicator |
-
2014
- 2014-09-07 CN CN201420513869.1U patent/CN204119468U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349263A (en) * | 2014-09-07 | 2015-02-11 | 歌尔声学股份有限公司 | Sound-insulating box, testing device applying same and testing method thereof |
| 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 |
| CN108387644A (en) * | 2018-03-07 | 2018-08-10 | 佛山市诺瓦安评检测有限公司 | The anti-acoustic capability test device and test method of industrial noise protective earplug |
| CN108387644B (en) * | 2018-03-07 | 2020-11-24 | 广东诺瓦安评检测有限公司 | Noise reduction performance testing device and testing method for industrial noise protection earplug |
| US11432068B2 (en) | 2018-06-13 | 2022-08-30 | Hewlett-Packard Development Company, L.P. | Vacuum-based microphone sensor controller and indicator |
| CN108880077A (en) * | 2018-07-20 | 2018-11-23 | 芜湖新瑟安智能科技有限公司 | A kind of sound arrester and its control method based on household electric power generator |
| CN110672727A (en) * | 2019-10-21 | 2020-01-10 | 中铁第四勘察设计院集团有限公司 | A kind of building material structure performance testing device |
| CN112839291A (en) * | 2020-12-24 | 2021-05-25 | 佳禾智能科技股份有限公司 | A device and test method for testing microphone negative pressure to generate pop sound |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: GOERTEK Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
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| CX01 | Expiry of patent term |
Granted publication date: 20150121 |
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| CX01 | Expiry of patent term |