CN109511073A - A kind of headphone test equipment and test method - Google Patents
A kind of headphone test equipment and test method Download PDFInfo
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- CN109511073A CN109511073A CN201811360044.XA CN201811360044A CN109511073A CN 109511073 A CN109511073 A CN 109511073A CN 201811360044 A CN201811360044 A CN 201811360044A CN 109511073 A CN109511073 A CN 109511073A
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- probe
- test
- headphone
- bottom plate
- product
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of headphone test equipment and test method, test equipment includes bottom plate, is provided with the left ear fixing seat, auris dextra fixing seat and the product auxiliary support apparatus for supporting headband of fixed phonation unit；Bottom plate is equipped with the product pressing device pressed to the phonation unit for being provided with test contact point；The probe tester for moving horizontally power mechanism comprising probe movement mechanism and for driving probe movement mechanism to do linear reciprocating motion and being located on bottom plate, probe movement mechanism includes the probe actuation component of probe assembly and driving probe assembly lifting, and the test of probe assembly and phonation unit contacts point contact when test.Start to test after product to be measured just positioning, pressing, probe are connected with test contact point contact when test, test data analysis keeps data after comparing, and test equipment, which restPoses, removes product.Test equipment service life of the present invention is high, and stability is strong, and testing efficiency is high, accurate testing.
Description
Technical field
The present invention relates to headphone the field of test technology, it is related specifically to a kind of headphone test equipment and using surveying
The method that examination equipment is tested.
Background technique
Earphone is a kind of energy converter, it receives the electric signal that media player or receiver are issued, using close to
The loudspeaking component of ear converts it into the sound wave that can be heard, is that the portable electronic devices such as mobile phone, walkman, radio must
Indispensable accessory.There are many type of earphone, are divided into In-Ear Headphones and headphone etc. according to wearing form, wherein wearing ear
Machine sound quality is good, is the first choice that young man listens to music.
In headphone industry, the function of new product the next powerful, it is desirable that functional test performance is higher and higher, at present needle
To the cradle test that product E LDO test (serial communication test) is generally carried with product, cradle service life is short, (interior
The contact chip service life in portion is low, be not suitable for high-volume test), stability it is not high；And testing efficiency is low, test data inaccuracy.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, it is to propose that the present invention, which solves its first technical problem,
A kind of headphone test equipment, service life is high, and stability is strong, and testing efficiency is high, accurate testing.
As the same technical concept, another technical problem solved by the invention is to provide a kind of above-mentioned head of use
Wear the test method of earphone test equipment.
In order to solve the first technical problem mentioned above, the technical scheme adopted by the invention is that: a kind of test of headphone is set
Standby, the test equipment includes:
Bottom plate is provided with left ear fixing seat, the auris dextra of the phonation unit for fixing the headphone on the bottom plate
The product auxiliary support apparatus of the headband of fixing seat and the support headphone.
Product pressing device, the product pressing device are installed on the bottom plate, the product pressing device for pair
The phonation unit for being provided with test contact point is pressed.
Probe tester, the probe tester includes moving horizontally power mechanism and probe movement mechanism, described
It moves horizontally power mechanism to be installed on the bottom plate, the power mechanism that moves horizontally is for driving the probe movement mechanism
Linear reciprocating motion is done, the probe movement mechanism includes probe assembly and the probe actuation portion for driving the probe assembly lifting
Part, when test the probe assembly and the test of the phonation unit contact point contact.
Preferably, the product auxiliary support apparatus includes vertical plate, and the vertical plate can be adjustably mounted to described along camber line
On bottom plate, cushion block is adjustably installed on the vertical plate, the cushion block is used to support the headband.
Preferably, the bottom plate is equipped with long arc-shaped holes, and the first threaded connector will be described vertical through the long arc-shaped holes
Plate and the bottom plate fasten；The vertical plate is equipped with vertical long hole, and the second threaded connector will be described through the vertical long hole
Cushion block is fixed with the vertical plate.
Preferably, the product pressing device includes rotating down pressing cylinder, compression bar and pressure head.
Described compression bar one end is fixedly connected with the piston rod of the rotating down pressing cylinder, and the compression bar other end is provided with company
Column is connect, the lower end of the connecting column is fixedly connected with the pressure head.
It is provided with limited block at the top of the cylinder body of the rotating down pressing cylinder, spacer pin is provided on the limited block, it is described
Spacer pin is for limiting the compression bar.
Preferably, the power mechanism that moves horizontally includes the first Pneumatic slid platform and link block, first Pneumatic slid platform
It is horizontally installed on the bottom plate, the link block is installed on the slide unit of first Pneumatic slid platform.
The probe actuation component includes the second Pneumatic slid platform, and second Pneumatic slid platform is mounted obliquely within the connection
On block, the probe assembly is installed on the slide unit of second Pneumatic slid platform.
Preferably, the probe assembly includes probe fixing piece and multiple probes for being installed on the probe fixing piece,
The probe fixing piece is installed on the slide unit of second Pneumatic slid platform.
Preferably, the headphone test equipment further includes electric control gear, the product pressing device, the horizontal shifting
Dynamic power mechanism and the probe movement mechanism are electrically connected with the electric control gear.
To solve above-mentioned second technical problem, the technical scheme adopted by the invention is that:
A kind of test method of headphone, using above-mentioned headphone test equipment, the headphone test is set
Standby further includes electric control gear, the product pressing device, it is described move horizontally power mechanism and the probe movement mechanism with
The electric control gear is electrically connected, and is provided with the manipulation button being electrically connected with the electric control gear on the bottom plate；The probe groups
Probe, the electric control gear in part with upper mechatronics；The test method the following steps are included:
A, using the auris dextra fixing seat, the left ear fixing seat and the product auxiliary support apparatus to institute to be tested
It states headphone and carries out Primary Location；
B, the manipulation button is pressed, the product pressing device movement, to being provided with one of the test contact point
The phonation unit carries out pressing fixation；
C, after pressing in place, the power mechanism that moves horizontally drives the probe movement mechanism to described in pressing fixation
Phonation unit movement；After movement in place, probe actuation component described in the probe movement mechanism drive the probe assembly to
Lower movement makes the test contact point contact of the probe and the phonation unit in the probe assembly；
D, it is connected after contact, starts to test, the host computer is analysed and compared and shown to received test data
Show；
E, after the completion of test, the host computer saves test data, and is sent completely instruction to the electric control gear, described
Probe movement mechanism, it is described move horizontally power mechanism and the product pressing device successively acts, restore to initial position, take
The lower headphone for completing test.
Preferably, the inductive pick-up group being electrically connected with the electric control gear is provided on the bottom plate, the induction passes
Sensor group includes multiple inductive pick-ups, and multiple inductive pick-ups are respectively used to obtain the product pressing device, described
Move horizontally the information in place of power mechanism and the probe actuation component.
Preferably, there are two the manipulation buttons, when executing step b, both hands is needed while pressing two manipulation buttons.
After above-mentioned technical proposal, the beneficial effects of the present invention are:
Test equipment of the invention mainly includes left ear fixing seat, auris dextra fixing seat, the product auxiliary being arranged on bottom plate
Support device, moves horizontally power mechanism and probe movement mechanism at product pressing device.After placing product, fixed using auris dextra
Seat, left ear fixing seat and product auxiliary support apparatus treat test product and carry out Primary Location；Product pressing device is to being provided with
After one phonation unit of test contact point is pressed, guarantee good positioning；Move horizontally power mechanism and probe motion
Mechanism successively acts, and realizes the contact of probe and product phonation unit the test contact point in probe assembly, i.e., realization product and
Good contact between host computer improves the on-state rate of product and the accuracy of test result；Testing efficiency is high and uses
Service life is long.
The present invention solves the problems, such as that cradle existing for cooperation cradle testing scheme is at high cost, the service life is low.Test is set
It is standby to be adjusted correspondingly for different products；Headphone semi-finished product and finished product can be tested；Not only meet ELDO survey
Examination demand can also meet other testing currents, voltage tester and communication on off test demand；It is versatile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of headphone test equipment of the present invention；
Fig. 2 is control principle block diagram of the present invention；
Fig. 3 is the status diagram of test equipment before product is placed；
Fig. 4 is the status diagram of Primary Location after product is placed；
Fig. 5 is the schematic diagram of product pressing device in place to product pressing；
Fig. 6 is the schematic diagram that the probe in probe assembly is connected with product contact point contact；
Fig. 7 is the schematic top plan view of Fig. 6；
After the completion of Fig. 8 is test, product pressing device, probe movement mechanism and moves horizontally power mechanism and restore initial bit
The status diagram set；
Fig. 9 is the status diagram after product is removed；
Figure 10 is the simple steps flow chart block diagram of the test method of headphone of the present invention；
In figure: 1- bottom plate, the left ear fixing seat of 11-, 12- auris dextra fixing seat, 13- product auxiliary support apparatus, 131- vertical plate,
132- cushion block, 133- long arc-shaped holes, the vertical long hole of 134-, 2- product pressing device, 21- rotating down pressing cylinder, 22- compression bar, 23-
Connecting column, 24- pressure head, 25- limited block, 26- spacer pin, 3- move horizontally power mechanism, the first Pneumatic slid platform of 31-, 32- connection
Block, the second Pneumatic slid platform of 4-, 5- probe fixing piece, 6- probe, 7- manipulate button, 8- headphone.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
The present invention is further elaborated；It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, a kind of headphone test equipment test equipment is mainly by bottom plate 1, the production being mounted on bottom plate 1
Product pressing device 2 and probe tester and electric control gear (not shown) are constituted.Wherein probe tester includes level
Mobile power mechanism 3 and probe movement mechanism.
In the present embodiment, the left ear fixing seat 11 and auris dextra for fixing 8 phonation unit of headphone are provided on bottom plate 1
Fixing seat 12 and the product auxiliary support apparatus 13 for supporting 8 headband of headphone.Left ear fixing seat 11 and auris dextra fixing seat 12
Internal accommodating chamber is respectively corresponded to be adapted with the outer profile of left phonation unit and right phonation unit.Product auxiliary support apparatus 13
Including vertical plate 131, vertical plate 131 is adjusted along camber line and is installed on bottom plate 1, is adjusted on vertical plate 131 and is equipped with cushion block 132, pads
Block 132 is used to support headband.The present embodiment is for realizing the above-mentioned mode being slidably installed are as follows:
Bottom plate 1 is equipped with long arc-shaped holes 133, is provided with the first screw thread that can be slided in long arc-shaped holes 133 on vertical plate 131
Connector, after sliding in place, the first threaded connector (screw) is fixed by vertical plate 131 and bottom plate 1；Generally use two the first spiral shells
Line connector, positioned at the both ends of 131 bottom of vertical plate, and the position of two the first threaded connectors is corresponding with long arc-shaped holes 133,
Ensure the validity of slidable adjustment.In sliding process, without unloading the first threaded connector, need to only it be loosened,
Convenient for adjusting；Wherein vertical plate 131 can be arc vertical plate.Vertical plate 131 is equipped with vertical long hole 134, and being provided on cushion block 132 can
The second threaded connector slided in vertical long hole 131, the second threaded connector (screw) consolidate cushion block 132 and vertical plate 131
It is fixed.Cushion block 132 can occur left and right relative to bottom plate 1, move up and down.
Other than aforesaid way, slideway rail structure can also be used.
In the present embodiment, product pressing device 2 is installed on bottom plate 1, for the auris dextra sounding in auris dextra fixing seat 12
Unit (in general, test contact point and microphone are arranged in auris dextra phonation unit) carries out pressing fixation, is convenient for subsequent test.It produces
Mainly by rotating down pressing cylinder 21, compression bar 22 and pressure head 24, rotating down pressing cylinder 21 is electrically connected product pressing device 2 with electric control gear
It connects；22 one end of compression bar is fixedly connected with the piston rod of rotating down pressing cylinder 21, and 22 other end of compression bar is provided with connecting column 23, connection
The lower end of column 24 is fixedly connected with pressure head 24.Rotary lifting movement is carried out with dynamic head 24 by rotating down pressing cylinder 21, it can be right
Product is effectively avoided, and it is convenient that product picks and places, easily operated.Limited block is provided at the top of the cylinder body of rotating down pressing cylinder 21
25, spacer pin 26 is provided on limited block 25, the stroke that spacer pin 26 is used to move downward compression bar 22 limits, it is ensured that pressure
Accuracy when closing auris dextra phonation unit causes to damage in order to avoid down stroke is excessive to auris dextra phonation unit.
In the present embodiment, the power mechanism 3 that moves horizontally in probe tester is installed on bottom plate 1, is moved horizontally dynamic
It is provided with probe movement mechanism on the power output part of force mechanisms 3, probe assembly, probe groups are provided on probe movement mechanism
The position of part is corresponding with auris dextra fixing seat 12.
Wherein: it moves horizontally power mechanism 3 and is mainly made of the first Pneumatic slid platform 31 and link block 32, the first Pneumatic slid platform
31 are horizontally installed on bottom plate 1, and power output part is slide unit, and link block 32 is installed on the slide unit, moves with slide unit；First
Pneumatic slid platform 31 is electrically connected with electric control gear.
The core component of probe movement mechanism is the second Pneumatic slid platform 4, and the second Pneumatic slid platform 4 is at certain angle of inclination installation
It is good in order to ensure probe 6 and product test contact point on link block 32 (link block 32 is provided with inclined mounting surface)
Contact, tilt angle is depending on the well azimuth of product test contact point；Second Pneumatic slid platform 4 is electrically connected with electric control gear.It visits
Needle assemblies include probe fixing piece 5 and multiple probes 6, and probe fixing piece 5 is installed on the slide unit of the second Pneumatic slid platform 4, probe
Fixing piece 5 is equipped with multiple mounting holes of fixed probe 6, and probe 6 is fixed on probe fixing piece 5 by the mounting hole.Probe 6
During contacting point contact with product test, driven using the first Pneumatic slid platform 31 and the second Pneumatic slid platform 4, the driving side
Formula, movement is steady, and positioning accuracy is high, can overcome the defect of poor contact between product test contact point and host computer, improves and surveys
Examination first-pass yield and the accuracy for ensuring test result.
It is provided with the manipulation button 7 being electrically connected with electric control gear for the control that realizes semi-automation, on bottom plate 1 and induction passes
Sensor group；Manipulation button 7 is mounted in button fixing seat, and inductive pick-up group includes multiple inductive pick-ups, and multiple inductions pass
Sensor is respectively used to obtain rotating down pressing cylinder 21 in product pressing device 2, moves horizontally the first Pneumatic slid platform in power mechanism 3
31 and probe movement mechanism in the second Pneumatic slid platform 4 movement information in place, be mounted on the appropriate location of bottom plate 1 can accurately obtain
Getting information is advisable.
It for the safety of operation, manipulates there are two buttons 7, when test, needs both hands while pressing two manipulation buttons 7,
In order to avoid operator's maloperation.
As shown in Fig. 2, control principle of the present invention are as follows:
Manipulation button 7, inductive pick-up group are electrically connected with the input terminal of electric control gear, for starting to electric control gear transmission
Test, in place signal；The output end of rotating down pressing cylinder 21, the first Pneumatic slid platform 31 and the second Pneumatic slid platform 4 and electric control gear
Electrical connection, for receiving the control instruction of electric control gear；Electric control gear starts to test signal and in place signal according to receiving, according to
Secondary control rotating down pressing cylinder 21, the first Pneumatic slid platform 31 and the second Pneumatic slid platform 4 act accordingly, and complete probe 6 and produce
The precise contact of product test contact point.Host computer (test equipment) is connect with electric control gear both-way communication, can send control letter
Number can receive again and to test signal, probe 6 connect conducting with host computer, progress ELDO test, testing current, voltage tester and communication
On off test.
As Fig. 3 to Figure 10 jointly shown in, a kind of test method of headphone uses above-mentioned headphone test equipment
And host computer carries out joint test.
The test method the following steps are included:
A, using the cushion block 132 in auris dextra fixing seat 12, left ear fixing seat 11 and product auxiliary support apparatus 2 to be tested
The auris dextra phonation unit of headphone 8, left ear phonation unit and headband carry out Primary Location.Headband needs when positioning by vertical plate
131 and cushion block 132 adjust to locking behind appropriate location.
B, both hands press two manipulation buttons 7 being arranged on bottom plate 1, electric control gear receives start to test signal after,
The rotating down pressing cylinder 21 controlled in product pressing device 2 acts, with dynamic head 24 to the auris dextra sounding in auris dextra fixing seat 12
Unit carries out pressing fixation.
C, electric control gear receives the pressing of corresponding inductive pick-up transmission in place after signal, the mobile engine of controlled level
The first Pneumatic slid platform 31 in structure 3 drives auris dextra phonation unit direction of second Pneumatic slid platform 5 into auris dextra fixing seat 12 to move；
Electric control gear receives the movement of corresponding inductive pick-up transmission in place after signal, and the second Pneumatic slid platform 5 of control drives probe solid
Determine part 5 to move obliquely, the test on the right phonation unit of the probe 6 and headphone 8 in probe assembly is made to contact point contact.
D, it is connected after contact, starts to test, host computer is analysed and compared and shown to received test data；On
Position machine is well known to those skilled in the art data processing method, and this will not be repeated here.
E, (test NG or test OK) after the completion of test, host computer saves test data, and is sent completely to electric control gear
Instruction, electric control gear control the second Pneumatic slid platform 4, the first Pneumatic slid platform 31 and rotating down pressing cylinder 21 and successively act, and restore extremely
Initial position；Remove the headphone 8 for completing test.
It repeats the above steps and carries out the test of next headphone 8.
To sum up, the present invention solves the problems, such as that cradle existing for cooperation cradle testing scheme is at high cost, the service life is low.It surveys
Examination equipment can be adjusted correspondingly for different products；Headphone semi-finished product and finished product can be tested；Not only meet
ELDO testing requirement can also meet other testing currents, voltage tester and communication on off test demand, versatile.Entirely
Test process, simple and effective, stability is strong.
Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art, such as the equivalent of performer is replaced
It changes.But these corresponding changes and modifications belong to the protection scope of the appended claims of the present invention.
Claims (10)
1. a kind of headphone test equipment, which is characterized in that the test equipment includes:
Bottom plate is provided with the left ear fixing seat of the phonation unit for fixing the headphone on the bottom plate, auris dextra is fixed
The product auxiliary support apparatus of the headband of seat and the support headphone；
Product pressing device, the product pressing device are installed on the bottom plate, and the product pressing device is used for setting
There is the phonation unit of test contact point to be pressed；
Probe tester, the probe tester include moving horizontally power mechanism and probe movement mechanism, the level
Mobile power mechanism is installed on the bottom plate, and described to move horizontally power mechanism past for driving the probe movement mechanism to do
Linear motion, the probe movement mechanism include the probe actuation component of probe assembly and the driving probe assembly lifting,
The test of the probe assembly and the phonation unit contacts point contact when test.
2. headphone test equipment according to claim 1, which is characterized in that the product auxiliary support apparatus includes
Vertical plate, the vertical plate can be adjustably mounted on the bottom plate along camber line, and cushion block is adjustably equipped on the vertical plate, described
Cushion block is used to support the headband.
3. headphone test equipment according to claim 2, which is characterized in that the bottom plate is equipped with long arc-shaped holes,
First threaded connector fastens the vertical plate and the bottom plate through the long arc-shaped holes；
The vertical plate is equipped with vertical long hole, and the second threaded connector runs through the vertical long hole for the cushion block and the vertical plate
It is fixed.
4. headphone test equipment according to claim 1, which is characterized in that the product pressing device includes rotation
Lower air cylinder, compression bar and pressure head；
Described compression bar one end is fixedly connected with the piston rod of the rotating down pressing cylinder, and the compression bar other end is provided with connection
Column, the lower end of the connecting column are fixedly connected with the pressure head；
It is provided with limited block at the top of the cylinder body of the rotating down pressing cylinder, spacer pin, the limit are provided on the limited block
Pin is for limiting the compression bar.
5. headphone test equipment according to claim 1, which is characterized in that the power mechanism that moves horizontally includes
First Pneumatic slid platform and link block, first Pneumatic slid platform are horizontally installed on the bottom plate, and the link block is installed on institute
On the slide unit for stating the first Pneumatic slid platform；
The probe actuation component includes the second Pneumatic slid platform, and second Pneumatic slid platform is mounted obliquely within the link block
On, the probe assembly is installed on the slide unit of second Pneumatic slid platform.
6. headphone test equipment according to claim 5, which is characterized in that the probe assembly includes that probe is fixed
Part and the multiple probes being installed on the probe fixing piece, the probe fixing piece are installed on the cunning of second Pneumatic slid platform
On platform.
7. headphone test equipment according to claim 1, which is characterized in that the headphone test equipment is also wrapped
Include electric control gear, the product pressing device, it is described move horizontally power mechanism and the probe movement mechanism with the electricity
Control device electrical connection.
8. a kind of test method of headphone uses headphone test equipment described in claim 1, which is characterized in that
The headphone test equipment further includes electric control gear, and the product pressing device described moves horizontally power mechanism and institute
It states probe movement mechanism to be electrically connected with the electric control gear, the behaviour being electrically connected with the electric control gear is provided on the bottom plate
Control button；Probe, the electric control gear in the probe assembly with upper mechatronics；The test method includes following
Step:
A, using the auris dextra fixing seat, the left ear fixing seat and the product auxiliary support apparatus to the head to be tested
It wears earphone and carries out Primary Location；
B, the manipulation button is pressed, the product pressing device movement, to being provided with described in one of the test contact point
Phonation unit carries out pressing fixation；
C, after pressing in place, the sounding for moving horizontally power mechanism and driving the probe movement mechanism fixed to pressing
Unit motion；After movement in place, probe actuation component described in the probe movement mechanism drives the probe assembly to transport downwards
It is dynamic, make the test contact point contact of the probe and the phonation unit in the probe assembly；
D, it is connected after contact, starts to test, the host computer is analysed and compared and shown to received test data；
E, after the completion of test, the host computer saves test data, and is sent completely instruction, the probe to the electric control gear
Movement mechanism, it is described move horizontally power mechanism and the product pressing device successively acts, restore to initial position, removed
At the headphone of test.
9. the test method of headphone according to claim 8, which is characterized in that be provided on the bottom plate with it is described
The inductive pick-up group of electric control gear electrical connection, the inductive pick-up group includes multiple inductive pick-ups, multiple inductions
Sensor is respectively used to obtain the product pressing device, described moves horizontally arriving for power mechanism and the probe actuation component
Position information.
10. the test method of headphone according to claim 8, which is characterized in that there are two the manipulation buttons, holds
When row step b, needs both hands while pressing two manipulation buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360044.XA CN109511073B (en) | 2018-11-15 | 2018-11-15 | Headset testing equipment and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360044.XA CN109511073B (en) | 2018-11-15 | 2018-11-15 | Headset testing equipment and testing method |
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| CN109511073A true CN109511073A (en) | 2019-03-22 |
| CN109511073B CN109511073B (en) | 2021-05-28 |
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| CN201811360044.XA Active CN109511073B (en) | 2018-11-15 | 2018-11-15 | Headset testing equipment and testing method |
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| CN112684333A (en) * | 2020-12-18 | 2021-04-20 | 歌尔光学科技有限公司 | Detection equipment for TWS earphone charging box |
| CN113840222A (en) * | 2021-09-02 | 2021-12-24 | 广东水利电力职业技术学院（广东省水利电力技工学校） | TWS earphone adjustable flexible assembly circulating transmission system |
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| CN112684333A (en) * | 2020-12-18 | 2021-04-20 | 歌尔光学科技有限公司 | Detection equipment for TWS earphone charging box |
| CN112684333B (en) * | 2020-12-18 | 2023-05-12 | 歌尔科技有限公司 | Detection equipment for TWS earphone charging box |
| CN113840222A (en) * | 2021-09-02 | 2021-12-24 | 广东水利电力职业技术学院（广东省水利电力技工学校） | TWS earphone adjustable flexible assembly circulating transmission system |
| CN113840222B (en) * | 2021-09-02 | 2023-06-09 | 广东水利电力职业技术学院（广东省水利电力技工学校） | TWS earphone adjustable flexible assembly circulation transmission system |
| CN114007180A (en) * | 2021-12-30 | 2022-02-01 | 深圳市国昌兴业五金制品有限公司 | Earphone bandeau slip life-span test equipment |
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