CN209783841U - Air tightness testing device of closed sound cavity module for mobile phone - Google Patents
Air tightness testing device of closed sound cavity module for mobile phone Download PDFInfo
- Publication number
- CN209783841U CN209783841U CN201920298568.4U CN201920298568U CN209783841U CN 209783841 U CN209783841 U CN 209783841U CN 201920298568 U CN201920298568 U CN 201920298568U CN 209783841 U CN209783841 U CN 209783841U
- Authority
- CN
- China
- Prior art keywords
- main body
- upper cover
- closed
- cavity
- test
- 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.)
- Active
Links
Landscapes
- Telephone Set Structure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
the utility model provides an air tightness testing device of a closed sound cavity module for a mobile phone, which comprises a base, a bracket, a testing accommodating piece, a transverse pneumatic device, a vertical pneumatic device, a microphone, a probe, an electroacoustic performance tester and a power amplifier; the bracket is fixedly arranged on the base; the test accommodating part comprises a main body and an upper cover, wherein the upper cover and the main body form a sealed cavity when being closed, the transverse pneumatic device and the vertical pneumatic device are respectively used for driving the main body and the upper cover of the test accommodating part, and the upper cover and the main body form a sealed cavity when being closed; the microphone is arranged on the main body, and the 2 probes are arranged on the upper cover; the probe is electrically connected with the power amplifier, the power amplifier and the microphone are respectively electrically connected with the electroacoustic performance tester, during testing, the tested closed sound cavity module is arranged in the closed cavity, and the output ends of the 2 probes are spliced and electrically connected with the tested closed sound cavity module. The utility model discloses can effectively discern the bad airtight sound chamber module for cell-phone of gas tightness during the use to can be used to the volume production line batch test.
Description
Technical Field
The utility model relates to a cell-phone component testing arrangement, concretely relates to gas tightness testing arrangement of airtight sound chamber module for cell-phone.
Background
The air tightness of the closed sound cavity module for the mobile phone mainly influences the electroacoustic performance and the service life, so that the air tightness test of the closed sound cavity module for the mobile phone is an essential part in production. At present, the method for testing the air tightness of the mobile phone closed sound cavity module in the industry is mainly to test by a water injection experiment method of manually hearing pure sound or with destructiveness. The detection method for artificially listening pure sound has low effective identification on the slightly air-leaking closed sound cavity module, is easily influenced by subjective factors of people and has poor reliability; although accurate detection results can be obtained by using a water injection experiment, the sound cavity module cannot be used continuously after water injection, so that the detection method is only suitable for sampling detection and cannot realize batch detection on a production line. Therefore, it is necessary to develop a device for testing the air tightness of a mobile phone sealed sound cavity module, which is effectively suitable for batch detection in a production line.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: for solving the problem that exists among the prior art, provide a new airtight sound chamber module's for cell-phone gas tightness testing arrangement, the device can effectively discern the airtight sound chamber module for cell-phone that the gas tightness is bad during the use to can be used to the volume production line and test in batches, and can not produce adverse effect to the airtight sound chamber module of cell-phone.
The technical scheme of the utility model is that: the utility model discloses an airtight sound chamber module's gas tightness testing arrangement for cell-phone, its structural feature is: the device comprises a base, a bracket, a test accommodating part, a transverse pneumatic device, a vertical pneumatic device, a microphone, a probe, an electroacoustic performance tester and a power amplifier;
The bracket is fixedly arranged on the base; the test accommodating part comprises a main body and an upper cover, the main body is a hollow box-shaped part with an opening at the upper end, an accommodating cavity is formed in the hollow part of the main body, the main body is slidably arranged on the base, the size and the shape of the upper cover are matched with the opening at the upper end of the main body, the transverse pneumatic device is arranged on the base, and the transverse pneumatic device is in transmission connection with the main body of the test accommodating part; the vertical pneumatic device is fixedly arranged on the support and is in transmission connection with the upper cover of the test accommodating piece, the vertical pneumatic device drives the upper cover to be matched with the upper end opening of the main body in an openable manner when in use, and the accommodating cavity of the main body is sealed into a sealed cavity when the upper cover and the main body are closed;
The microphone is fixedly arranged on the main body in a sealing way, the sound pickup end of the microphone is arranged in the containing cavity of the main body of the test containing piece, and the rear end of the microphone extends out of the main body of the test containing piece; the probe is provided with 2 probes, and the 2 probes are fixedly arranged on the upper cover of the test accommodating piece in a vertically through mode and follow the upper cover;
The probe, the electroacoustic performance tester and the power amplifier are respectively provided with a signal input end and a signal output end, the signal input ends of the 2 probes are electrically connected with the signal output end of the power amplifier, the signal input end of the power amplifier is electrically connected with the signal output end of the electroacoustic performance tester, the signal output end of the microphone is electrically connected with the signal input end of the electroacoustic performance tester, during testing, the tested closed sound cavity module is arranged in the closed cavity, and the output ends of the 2 probes are spliced with the tested closed sound cavity module and are electrically connected.
The further scheme is as follows: the containing cavity of the main body of the test containing piece is internally provided with a sealing foam for plugging a sound outlet and a leakage hole of the tested closed sound cavity module when in use.
the further scheme is as follows: the space of the closed cavity is less than 100 cubic centimeters.
the further scheme is as follows: the electroacoustic performance tester is a Soundcheck electroacoustic tester.
The utility model discloses has positive effect: the utility model discloses an airtight sound chamber module's gas tightness testing arrangement for cell-phone, it makes its airtight sound chamber module that can effectively discern the gas tightness when using through overall structure's design to can be conveniently used for the batch production line to test in batches, and can not produce adverse effect for the airtight sound chamber module of cell-phone.
Drawings
Fig. 1 is a schematic structural view of the present invention;
Fig. 2 is a schematic view of the structure of fig. 1 from another angle with the power amplifier and the electroacoustic performance tester removed.
The reference numbers in the above figures are as follows:
the device comprises a base 1, a bracket 2, a test accommodating part 3, a main body 31, an accommodating cavity 31-1, an upper cover 32, a transverse pneumatic device 4, a vertical pneumatic device 5, a microphone 6, a probe 7, an electroacoustic performance tester 8 and a power amplifier 9; the tested closed acoustic cavity module 100.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
Referring to fig. 1 and 2, the air tightness testing device of the closed sound cavity module for the mobile phone in the embodiment mainly comprises a base 1, a support 2, a test accommodating part 3, a horizontal pneumatic device 4, a vertical pneumatic device 5, a microphone 6, a probe 7, an electroacoustic performance tester 8 and a power amplifier 9.
The bracket 2 is fixedly arranged on one side of the base 1.
The test accommodating part 3 mainly comprises a main body 31 and an upper cover 32, wherein the main body 31 is a hollow box-shaped part with an opening at the upper end and composed of a bottom plate and a wall plate, the main body 31 is slidably arranged on the base 1, and a microphone mounting hole is arranged on the wall plate of the main body 31; the hollow part of the main body 31 forms an accommodating cavity 31-1, and the accommodating cavity 31-1 is used for placing the tested closed sound cavity module 100 during testing. The size and the shape of the upper cover 32 are adapted to the upper end opening of the main body 31, the upper cover 32 can be matched with the upper end opening of the main body 31 in an opening and closing way, when the upper cover 32 and the main body 31 are closed, the accommodating cavity 31-1 of the main body 31 is sealed into a closed cavity, and the space of the closed cavity is less than 100 cubic centimeters; preferably, a sealing foam (not shown) for sealing the sound outlet and the leakage hole of the tested sealed sound cavity module 100 during use is provided in the accommodating cavity 31-1 of the main body 31.
The transverse pneumatic device 4 is fixedly arranged on the base 1, the transverse pneumatic device 4 is in transmission connection with the main body 31 of the test accommodating part 3, and the transverse pneumatic device 4 is used for driving the main body 31 of the test accommodating part 3 to horizontally slide on the base 1 to a set test position when in use. The transverse pneumatic device 4 is a commercially available mature product, and the structure thereof is not described in detail.
vertical pneumatic means 5 is fixed the setting on the upper portion of support 2 from top to bottom, and vertical pneumatic means 5 is connected with the upper cover 32 transmission of test holding piece 3, and the lower extreme of vertical pneumatic means 5 is located to the upper cover 32 of test holding piece 3. The vertical pneumatic device 5 is used for driving the upper cover 32 of the test accommodating part 3 to move downwards to seal and close the upper end opening of the main body 31 of the test accommodating part 3 when in use, so that the accommodating cavity 31-1 of the main body 31 forms a closed cavity. The vertical pneumatic device 5 is a commercially available mature product, and the structure thereof is not described in detail.
The microphone 6 is matched with a microphone mounting hole on a wall plate of the main body 31 of the test accommodating piece 3, hermetically and fixedly arranged on the wall plate of the main body 31, a sound pickup end of the microphone 6 is arranged in the accommodating cavity 31-1 of the test accommodating piece 3, and the rear end of the microphone 6 extends out of the main body 31 of the test accommodating piece 3. The microphone 6 is used for receiving the sound signal emitted by the tested closed sound cavity module 100 during testing and sending the sound signal to the electroacoustic performance tester 8.
The probes 7 are provided with 2 probes, and the 2 probes 7 are fixedly provided on the upper cover 32 of the test container 3 so as to penetrate vertically. When the 2 probes 7 are used for testing, the probes are inserted into the tested sealed sound cavity module 100 to transmit sine wave electric signals for enabling the tested sealed sound cavity module 100 to sound, the sine wave electric signals are sent by the electroacoustic performance tester 8, amplified by the power amplifier 9 and transmitted to the tested sealed sound cavity module 100 through the 2 probes 7.
the electroacoustic performance tester 8 is used for generating sine wave electric signals for testing, receiving sound signals sent by the tested closed sound cavity module 100 and sent by the microphone 6, and comparing a frequency response curve of the tested closed sound cavity module 100 with a set threshold value for judging whether the tested closed sound cavity module 100 is a gas leakage product or not so as to judge whether the tested closed sound cavity module 100 is a normal product or a gas leakage product or not. The threshold value electroacoustic performance tester 8 arranged in the electroacoustic performance tester 8 is a commercially available product, and in the embodiment, the electroacoustic performance tester 8 preferably adopts a Soundcheck electroacoustic tester.
The power amplifier 9 is used for amplifying the sine wave electrical signal for testing sent by the electroacoustic performance tester 8, and then transmitting the amplified signal to the tested closed sound cavity module 100 through the probe 7.
The input ends of the 2 probes 7 are electrically connected with the signal output end of the power amplifier 9, the signal input end of the power amplifier 9 is electrically connected with the signal output end of the electroacoustic performance tester 8, the signal output end of the microphone 6 is electrically connected with the signal input end of the electroacoustic performance tester 8, and during testing, the output ends of the 2 probes 7 are inserted into and electrically connected with the tested closed sound cavity module 100.
in the air tightness testing device of the closed sound cavity module for the mobile phone of the embodiment, when in use, the tested closed sound cavity module 100 is placed in the containing cavity 31-1 of the main body 31 of the testing containing piece 3, the sound outlet and the leakage hole of the tested closed sound cavity module 100 are sealed by the sealing foam arranged in the containing cavity 31-1, the transverse pneumatic device 4 is started to push the main body 31 of the testing containing piece 3 to the set position, the vertical pneumatic device 5 is started to seal and close the upper cover 32 of the testing containing piece 3 and the main body 31 of the testing containing piece 3, 2 probes 7 are inserted into the tested closed sound cavity module 100, the electroacoustic performance tester 8 is started to output sine wave electric signals for testing, the sine wave electric signals are amplified by the power amplifier 9 and then transmitted to the tested closed sound cavity module 100 by the probes 7 to sound, the microphone 6 receives sound signals sent by the tested closed sound cavity module 100 and sends the sound signals to the electroacoustic performance tester 8, the electroacoustic performance tester 8 receives the sound signal sent by the microphone 6 to judge whether the tested closed sound cavity module 100 is a normal product or an air leakage product. The gas tightness testing device of the closed sound cavity module for the mobile phone can be effectively used for online testing of the production line of the closed sound cavity module for the mobile phone, can conveniently and effectively identify gas leakage products in the sound cavity module of the closed sound cavity module for the mobile phone, and can not generate adverse effects on the closed sound cavity module for the mobile phone due to the fact that the gas leakage products are tested by using the electroacoustic principle.
The above embodiments are illustrative of the specific embodiments of the present invention, but not limiting to the present invention, and those skilled in the relevant art can also make various changes and modifications to obtain the equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should fall under the protection scope of the present invention.
Claims (4)
1. The utility model provides an air tightness testing arrangement of airtight sound chamber module for cell-phone which characterized in that: the device comprises a base, a bracket, a test accommodating part, a transverse pneumatic device, a vertical pneumatic device, a microphone, a probe, an electroacoustic performance tester and a power amplifier;
The bracket is fixedly arranged on the base; the test accommodating part comprises a main body and an upper cover, the main body is a hollow box-shaped part with an opening at the upper end, an accommodating cavity is formed in the hollow part of the main body, the main body is slidably arranged on the base, the size and the shape of the upper cover are matched with the opening at the upper end of the main body, the transverse pneumatic device is arranged on the base, and the transverse pneumatic device is in transmission connection with the main body of the test accommodating part; the vertical pneumatic device is fixedly arranged on the support and is in transmission connection with the upper cover of the test accommodating piece, the vertical pneumatic device drives the upper cover to be matched with the upper end opening of the main body in an openable manner when in use, and the accommodating cavity of the main body is sealed into a sealed cavity when the upper cover and the main body are closed;
the microphone is fixedly arranged on the main body in a sealing way, the sound pickup end of the microphone is arranged in the containing cavity of the main body of the test containing piece, and the rear end of the microphone extends out of the main body of the test containing piece; the probe is provided with 2 probes, and the 2 probes are fixedly arranged on the upper cover of the test accommodating piece in a vertically through mode and follow the upper cover;
The probe, the electroacoustic performance tester and the power amplifier are respectively provided with a signal input end and a signal output end, the signal input ends of the 2 probes are electrically connected with the signal output end of the power amplifier, the signal input end of the power amplifier is electrically connected with the signal output end of the electroacoustic performance tester, the signal output end of the microphone is electrically connected with the signal input end of the electroacoustic performance tester, during testing, the tested airtight sound cavity module is arranged in the airtight cavity, and the output ends of the 2 probes are spliced with the tested airtight sound cavity module and are electrically connected.
2. The airtightness testing device for the closed sound cavity module for the mobile phone according to claim 1, characterized in that: the test holds the sealed bubble cotton that the intracavity of holding of the main part of piece was equipped with the sound outlet hole that the shutoff was surveyed airtight sound chamber module had and let out the leak hole when being used for using.
3. The airtightness testing device for the closed sound cavity module for the mobile phone according to claim 1, characterized in that: the space of the closed cavity is less than 100 cubic centimeters.
4. The device for testing the airtightness of the closed sound cavity module for mobile phones according to any one of claims 1 to 3, wherein: the electroacoustic performance tester is a Soundcheck electroacoustic tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920298568.4U CN209783841U (en) | 2019-03-08 | 2019-03-08 | Air tightness testing device of closed sound cavity module for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920298568.4U CN209783841U (en) | 2019-03-08 | 2019-03-08 | Air tightness testing device of closed sound cavity module for mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209783841U true CN209783841U (en) | 2019-12-13 |
Family
ID=68797025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920298568.4U Active CN209783841U (en) | 2019-03-08 | 2019-03-08 | Air tightness testing device of closed sound cavity module for mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209783841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916566A (en) * | 2019-03-08 | 2019-06-21 | 江苏米笛声学科技有限公司 | The test device for air tightness of the closed sound cavity mold group of mobile phone |
-
2019
- 2019-03-08 CN CN201920298568.4U patent/CN209783841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916566A (en) * | 2019-03-08 | 2019-06-21 | 江苏米笛声学科技有限公司 | The test device for air tightness of the closed sound cavity mold group of mobile phone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9560462B2 (en) | Microphone test stand for acoustic testing | |
| CN104515659B (en) | Device and method based on quality factor detection loudspeaker module sealing | |
| CN209783841U (en) | Air tightness testing device of closed sound cavity module for mobile phone | |
| CN104165738A (en) | Ultrasonic leak detector for electric power sealing equipment | |
| TW201340677A (en) | Sound quality testing method and system | |
| CN106197893A (en) | Mobile phone sealing ring air tightness detection equipment | |
| CN109916566A (en) | The test device for air tightness of the closed sound cavity mold group of mobile phone | |
| CN110346034A (en) | Inspection device is positioned based on sonic method portable high-pressure equipment fault | |
| CN101336011A (en) | Microphone assembling test system and method thereof | |
| CN105030251B (en) | Audiology test device, system and correlation technique | |
| CN109005494B (en) | Air tightness detection device and method for micro loudspeaker module | |
| CN105228073B (en) | Open air speakers gas leakage test macro and method | |
| CN205958203U (en) | Cell -phone sealing washer gas tightness check out test set | |
| CN204008032U (en) | Electric power water-tight equipment ultrasonic leak detector | |
| CN217741911U (en) | High sound pressure testing device and system for microphone monomer | |
| CN207600666U (en) | A kind of quartz-crystal resonator sealing performance leakage detection apparatus | |
| CN203658525U (en) | Device for performing electrified detection and diagnosing power equipment defects | |
| CN209627704U (en) | A kind of Microspeaker test fixture | |
| CN207911018U (en) | A kind of bluetooth headset radio frequency testing device | |
| CN203560720U (en) | Wide-frequency intrinsically safe sound wave leak detector | |
| CN210198661U (en) | Air tightness detection device | |
| CN111551320B (en) | Airtightness testing system and device based on product with loudspeaker | |
| CN204241179U (en) | Water tank gas tightness detecting system | |
| CN115695657B (en) | Detection method, device and system for low-noise power supply by utilizing frequency spectrum to test voice gateway | |
| CN107360531B (en) | Loudspeaker testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |