CN207070361U - Microphone test fixture - Google Patents
Microphone test fixture Download PDFInfo
- Publication number
- CN207070361U CN207070361U CN201720951018.9U CN201720951018U CN207070361U CN 207070361 U CN207070361 U CN 207070361U CN 201720951018 U CN201720951018 U CN 201720951018U CN 207070361 U CN207070361 U CN 207070361U
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- CN
- China
- Prior art keywords
- microphone
- fixture
- substrate
- test
- thimble
- Prior art date
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 239000000523 sample Substances 0.000 claims abstract description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 239000006071 cream Substances 0.000 description 8
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model provides a kind of microphone test fixture, including testing base and the microphone stopper slot and test probe that are arranged in testing base, and fixture, horizontal mobile mechanism and vertical movement mechanism；Wherein, microphone substrate is placed in microphone stopper slot, and the side edge of fixture and microphone substrate is touched, and horizontal mobile mechanism is connected with fixture, and horizontal mobile mechanism is used to control clamp microphone substrate；Vertical movement mechanism is connected with horizontal mobile mechanism, and vertical movement mechanism is used to control to be moved vertically by the microphone substrate of clamp, so that microphone substrate is in contact with test probe.The accuracy of the test to gas leakage microphone can be improved by the utility model, and then lifts the quality of microphone.
Description
Technical field
Product test technical field is the utility model is related to, relates more particularly to a kind of microphone test fixture.
Background technology
The voice signal of people is converted into corresponding electric signal by Mike's wind energy, and it is widely used in mobile phone, flat board, electricity
In the portable type electronic products such as brain, camera, video camera.Generally, in order to ensure be arranged on portable type electronic product in Mike
Wind has higher acoustical quality, is required to test by multinomial performance before dispatching from the factory.
At present, it is set directly at the microphone on substrate pads face for acoustic aperture, the general structure for adding base using probe
Tested.Fig. 1 shows the structure of existing microphone test fixture.As shown in figure 1, existing microphone test fixture
Structure includes pushing probe 1, testing base 2 and the microphone stopper slot being arranged in testing base and test probe 3, microphone
It is placed in stopper slot, microphone includes microphone case 4, the substrate 5 being arranged in microphone case 4, set on the substrate 5
The MEMS chip 7 and asic chip 8 being connected with substrate 5, push probe 1 and are arranged on microphone case 4, in the pad face of substrate 5
On be provided with acoustic aperture 6, when being tested using microphone test fixture microphone, by pushing probe 1 to outside microphone
Shell 4 applies lower pressure, so that test probe 3 is in contact with substrate 5, extraneous sound pressure signal is passed by microphone acoustic aperture 6
MEMS chip 7 is handed to, sound pressure signal is converted to capacitance variations by MEMS chip 7, and asic chip 8 is connected with MEMS chip 7, is used for
The capacitance variations of MEMS chip 7 are detected, and is converted into electric signal and passes to microphone substrate.
Because microphone is very strict to sealing requirements, once microphone exist sealing it is bad when, then occur low
Frequency drop phenomenon, and by above-mentioned structure, when being tested using existing test fixture microphone, due to being
By applying descend pressure to be tested to microphone case, and generally welded by tin cream between microphone case and PCB
It is connected together, if tin cream has crack or gas leakage, crack closure is may be such that in the presence of lower pressure,
So as to cause the illusion of good seal, and then test result is caused to judge by accident, the risk for causing defective products to flow out.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of microphone test fixture, to solve existing wheat
The problem of test accuracy is low be present in gram wind test fixture.
Microphone test fixture of the present utility model, including testing base and the microphone that is arranged in testing base it is spacing
Groove and test probe, and fixture, horizontal mobile mechanism and vertical movement mechanism；Wherein, microphone substrate is placed on microphone
In stopper slot, the side edge of fixture and microphone substrate is touched, and horizontal mobile mechanism is connected with fixture, and horizontal mobile mechanism is used for
Control clamp microphone substrate；Vertical movement mechanism is connected with horizontal mobile mechanism, and vertical movement mechanism is used to control quilt
The microphone substrate vertical movement of clamp, so that microphone substrate is in contact with test probe.
Furthermore it is preferred that structure be：Microphone stopper slot is corner stopper slot, and fixture is arranged on the adjacent of corner stopper slot
Two angles between.
Furthermore it is preferred that structure be：Horizontal mobile mechanism includes thimble and the drive mechanism being connected with thimble, thimble and folder
Tool is connected, and drive mechanism is used to drive thimble to move horizontally, and microphone substrate is clamped by thimble.
Furthermore it is preferred that structure be：Drive mechanism is motor or cylinder.
Furthermore it is preferred that structure be：Vertical movement mechanism includes expansion link and the motor that is connected with expansion link, expansion link and
Thimble is connected, and motor is used to drive expansion link to move vertically, so as to be moved vertically by the microphone substrate of clamp.
Furthermore it is preferred that structure be：Expansion link is bolted with thimble.
Using above-mentioned according to microphone test fixture of the present utility model, control is moved horizontally by horizontal mobile mechanism
Coupled fixture clamps the microphone substrate being placed in microphone stopper slot, at the same by vertical movement mechanism with it is horizontal
Travel mechanism is connected, and is moved vertically by vertical movement mechanism control by the microphone substrate of clamp, so that microphone base
Plate is in contact with the test probe being arranged in testing base, so as to test microphone.Will not by the utility model
The lower pressure to microphone substrate is introduced, therefore, does not interfere with the tin cream state on microphone substrate, so as to improve to leakage
The accuracy of the test of gas microphone, and then lift the quality of microphone.
Brief description of the drawings
By reference to the description below in conjunction with accompanying drawing, and with being more fully understood to of the present utility model, this reality
It will be more apparent and should be readily appreciated that with new other purposes and result.In the accompanying drawings：
Fig. 1 is the structural representation of existing microphone test fixture；
Fig. 2 is the side structure schematic diagram according to the microphone test fixture of the utility model embodiment；
Fig. 3 is the positive structure schematic according to the microphone test fixture of the utility model embodiment.
Identical label indicates similar or corresponding feature or function in all of the figs.
In figure：Push probe 1, testing base 2, test probe 3, microphone case 4, substrate 5, acoustic aperture 6, MEMS chip 7,
Asic chip 8, testing base 21, microphone stopper slot 22, test probe 23, fixture 24, thimble 25, expansion link 26, microphone
Substrate 31.
Embodiment
Specific embodiment of the utility model is described in detail below with reference to accompanying drawing.
The problem of test accuracy is low be present for foregoing existing microphone test fixture, the utility model passes through level
Moving horizontally for travel mechanism controls coupled fixture to clamp the microphone substrate being placed in microphone stopper slot, together
When vertical movement mechanism is connected with horizontal mobile mechanism, by vertical movement mechanism control by the microphone substrate of clamp
Vertical movement, so that microphone substrate is in contact with the test probe being arranged in testing base, so as to be surveyed to microphone
Examination.Because the utility model will not introduce the lower pressure to microphone substrate, therefore, the tin cream on microphone substrate is not interfered with
State, so as to improve the accuracy of the test to gas leakage microphone, and then lift the quality of microphone.
To describe microphone test fixture provided by the utility model in detail, Fig. 2 is shown to be implemented according to the utility model
The side structure of the microphone test fixture of example, Fig. 3 are shown according to the microphone test fixture of the utility model embodiment
Facad structure.
As shown in Figures 2 and 3, microphone test fixture provided by the utility model includes testing base 21, is arranged on survey
Try the microphone stopper slot 22 and test probe 23 in base 21, and fixture 24, horizontal mobile mechanism and vertical movement mechanism.
Wherein, microphone substrate 31 is placed in microphone stopper slot 22, and the side edge of fixture 24 and microphone substrate 31 is touched, horizontal
Travel mechanism is connected with fixture 24, and horizontal mobile mechanism is used to control fixture 24 to clamp microphone substrate 31.
Vertical movement mechanism is connected with horizontal mobile mechanism, and vertical movement mechanism is used to control the Mike clamped by fixture 24
Wind substrate 31 is in vertical motion, so that microphone substrate 31 is in contact with test probe 23, so as to test microphone.
Specifically, in the utility model, microphone stopper slot 22 is arranged on four corner positions of microphone substrate, is
Corner stopper slot, fixture 24 are arranged between adjacent two angle of corner stopper slot.That is, in the utility model,
Microphone substrate is the substrate of quadrangle, and four angles of microphone substrate are just corresponding with four angles of corner stopper slot, and
Four edges of the fixture just with microphone substrate are in contact, and clamp wheat can be just made under the control of horizontal mobile mechanism
Gram wind substrate.
Above-mentioned horizontal mobile mechanism includes thimble 25 and the drive mechanism (not shown) being connected with thimble 25, thimble
25 are connected with fixture 24, and drive mechanism is used to drive thimble to move horizontally, and during thimble is moved horizontally, passes through top
Pin 25 clamps microphone substrate.Further, drive mechanism can be motor or cylinder, can be square by motor or cylinder
Just the dynamics (distance for controlling thimble to move horizontally) of fixture clamping microphone substrate is controlled, avoids the chucking power mistake of fixture
Cause to damage to microphone substrate greatly.
In addition, above-mentioned vertical mechanism includes expansion link 26 and the motor (not shown) being connected with expansion link 26, should
Motor can be linear electric motors, and expansion link 26 is connected with thimble 25, and motor is used to drive expansion link to be in vertical motion, so that by
The microphone substrate that fixture 24 clamps is in vertical motion.Wherein, expansion link 26 is bolted with thimble 25, in this way,
It can make to be in vertical motion by the microphone substrate of clamp in the presence of expansion link.
It should be noted that above-mentioned vertical movement mechanism may also be only expansion link, stretched by manual hand manipulation
Bar equally enables to be in vertical motion by the microphone substrate of clamp.
It should be noted that in existing microphone manufacture craft, microphone substrate is with shell typically by tin cream
Weld together, and the characteristic according to microphone in itself, the size of microphone substrate are typically larger than the size of shell, it is existing
Test fixture is when testing microphone, when the tin cream of microphone substrate and shell welding portion has crack or gas leakage
When, tin cream crack closure is may result in the presence of lower pressure, so as to judge measurement result by accident.And in the utility model,
Due to not introducing the lower pressure to microphone substrate, but by the clamping force of level and perpendicular to horizontal mobile mechanism
Lower pressure is not in the situation for making tin cream crack closure, so as to greatly carry therefore come the test to microphone realized
The accuracy of the test of high gas leakage microphone.
Described in an illustrative manner above with reference to accompanying drawing according to microphone test fixture of the present utility model, still, sheet
Art personnel should be appreciated that the microphone test fixture proposed for above-mentioned the utility model, can also not depart from
Various improvement are made on the basis of the utility model content.Therefore, the scope of protection of the utility model should be by appended right
The content of claim determines.
Claims (6)
1. a kind of microphone test fixture, including testing base and the microphone stopper slot being arranged in testing base and test are visited
Pin, microphone substrate are placed in the microphone stopper slot；Characterized in that, also include fixture, horizontal mobile mechanism and hang down
Straight travel mechanism；Wherein,
The side edge of the fixture and microphone substrate is touched, and the horizontal mobile mechanism is connected with the fixture, the level
Travel mechanism is used to control microphone substrate described in the clamp；
The vertical movement mechanism is connected with the horizontal mobile mechanism, and the vertical movement mechanism is used to control by the fixture
The microphone substrate vertical movement of clamping, so that the microphone substrate is in contact with the test probe.
2. microphone test fixture as claimed in claim 1, it is characterised in that
The microphone stopper slot is corner stopper slot, the fixture be arranged on the corner stopper slot adjacent two angle it
Between.
3. microphone test fixture as claimed in claim 1, it is characterised in that
The horizontal mobile mechanism includes thimble and the drive mechanism being connected with the thimble, the thimble and the fixture phase
Even, the drive mechanism is used to drive the thimble to move horizontally, and the microphone substrate is clamped by the thimble.
4. microphone test fixture as claimed in claim 3, it is characterised in that
The drive mechanism is motor or cylinder.
5. microphone test fixture as claimed in claim 3, it is characterised in that
The vertical movement mechanism includes expansion link and the motor being connected with the expansion link, the expansion link and the thimble phase
Even, the motor is used to drive the expansion link to move vertically, so as to be moved vertically by the microphone substrate of the clamp.
6. microphone test fixture as claimed in claim 5, it is characterised in that
The expansion link is bolted with the thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720951018.9U CN207070361U (en) | 2017-08-01 | 2017-08-01 | Microphone test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720951018.9U CN207070361U (en) | 2017-08-01 | 2017-08-01 | Microphone test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207070361U true CN207070361U (en) | 2018-03-02 |
Family
ID=61518627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720951018.9U Active CN207070361U (en) | 2017-08-01 | 2017-08-01 | Microphone test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207070361U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494036A (en) * | 2019-09-29 | 2019-11-22 | 格力电器（武汉）有限公司 | Machine core test device and machine core test method |
| CN111726741A (en) * | 2020-06-22 | 2020-09-29 | 维沃移动通信有限公司 | Microphone state detection method and device |
| CN112291692A (en) * | 2020-10-13 | 2021-01-29 | 皓骏科技(北京)有限公司 | Detection device |
-
2017
- 2017-08-01 CN CN201720951018.9U patent/CN207070361U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494036A (en) * | 2019-09-29 | 2019-11-22 | 格力电器（武汉）有限公司 | Machine core test device and machine core test method |
| CN111726741A (en) * | 2020-06-22 | 2020-09-29 | 维沃移动通信有限公司 | Microphone state detection method and device |
| CN111726741B (en) * | 2020-06-22 | 2021-09-17 | 维沃移动通信有限公司 | Microphone state detection method and device |
| CN112291692A (en) * | 2020-10-13 | 2021-01-29 | 皓骏科技(北京)有限公司 | Detection device |
| CN112291692B (en) * | 2020-10-13 | 2022-01-28 | 皓骏科技(北京)有限公司 | Detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200615 Address after: 266104 room 103, 396 Songling Road, Laoshan District, Qingdao, Shandong Province Patentee after: Goer Microelectronics Co.,Ltd. Address before: 266100 Qingdao, Laoshan District, North House Street investment service center room, Room 308, Shandong Patentee before: GOERTEK TECHNOLOGY Co.,Ltd. |