CN204046817U - Microphone - Google Patents
Microphone Download PDFInfo
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- CN204046817U CN204046817U CN201420385796.2U CN201420385796U CN204046817U CN 204046817 U CN204046817 U CN 204046817U CN 201420385796 U CN201420385796 U CN 201420385796U CN 204046817 U CN204046817 U CN 204046817U
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- protection network
- microphone
- composite web
- tone
- housing
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Abstract
The utility model provides a kind of microphone, comprise the housing with host cavity, acoustic-electric transducing chip is provided with in described host cavity, described housing is provided with tone-entering hole, described housing is sticked and covers the composite web of described tone-entering hole, described composite web comprises stretch tight zona and the first protection network and the second protection network that are separately fixed at zona both sides of stretching tight.The utility model microphone has good water proofing property and dust tightness.
Description
[technical field]
The utility model relates to a kind of microphone, specifically refers to a kind of Electret Condencer Microphone.
[background technology]
Along with the development of wireless telecommunications, Global Mobile Phone Users gets more and more, the requirement of user to mobile phone is not only satisfied with call, and want to provide high-quality communication effect, especially the development of Technology of Mobile Multimedia at present, the speech quality of mobile phone becomes more important, and the microphone of mobile phone is as the voice pick device of mobile phone, and its design quality directly affects speech quality.
And apply more at present and the microphone of better performances is microphone of microelectromechanicsystem system (Micro-Electro-Mechanical-System Microphone, be called for short MEMS), its principle adopts capacity effect to realize, simplified summary is exactly, the distance at the two poles of the earth of electric capacity changes, capacitance is caused to change, thus generation current, and why the distance at the two poles of the earth changes, be because the driving of external sound wave makes so, and then can realize that sound is converted into the signal of telecommunication and transmit.
Relevant MEMS microphone, comprises shell, substrate, substrate is provided with MEMS chip and control chip.Tone-entering hole is offered for accepting and transmitting sound wave to MEMS chip in the appropriate location of shell.MEMS chip then comprises mutually insulated and vibrating diaphragm in a distance and backboard, and vibrating diaphragm and backboard then form the two poles of the earth of electric capacity, and vibrating diaphragm can vibrate by backboard relatively.
MEMS chip is very little, also very accurate, and when MEMS microphone being welded, scolding tin, dust, steam, even air blast enters MEMS chip, causes the vibrating diaphragm of MEMS chip damaged and loses efficacy.
The utility model is then to provide a kind of MEMS microphone of improvement to improve the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of microphone improving reliability.
The utility model solves the problems of the technologies described above by the following technical programs:
A kind of microphone, comprise the housing with host cavity, acoustic-electric transducing chip is provided with in described host cavity, described housing is provided with tone-entering hole, described housing is sticked and covers the composite web of described tone-entering hole, described composite web comprises stretch tight zona and the first protection network and the second protection network that are separately fixed at the zona upper and lower surface that stretches tight.
Preferably, described composite web is sticked on the inwall of housing.
Preferably, described composite web is sticked on the outer wall of housing.
Preferably, described composite web is contained in described tone-entering hole at least partly.
Preferably, described housing comprises substrate and lid is connected on shell substrate also being formed with it host cavity, and described tone-entering hole is positioned on described shell.
Preferably, described housing comprises substrate and lid is connected on shell substrate also being formed with it host cavity, and described tone-entering hole is positioned on described substrate.
Preferably, described first protection network adopts the one in polyurethane film or polyimide film.
Preferably, described second protection network adopts the one in polyurethane film or polyimide film.
Preferably, described first protection network and the second protection network adopt glue be bonded in described in stretch tight on zona.
Preferably, described glue is epoxy glue.
Compared with prior art, shell of the present utility model is coated with composite web, can prevents foreign material steam from entering microphone host cavity, the structure of described composite web can effectively prevent from producing warpage in high frequency simultaneously.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of the first execution mode of the utility model microphone;
Fig. 2 is the structural representation of the utility model microphone composite web;
Fig. 3 is the schematic diagram of the utility model microphone the second execution mode.
[embodiment]
Concrete structure of the present utility model is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, for the first execution mode of the utility model microphone, the utility model microphone 10 on electronic equipment to accept external acoustic waves and sound wave be converted to the signal of telecommunication, in the present embodiment, the utility model microphone is MEMS (Micro-Electro-Mechanical-System Microphone) microphone.
Microphone 10 mainly comprises the housing with host cavity, described housing comprises substrate 12 and lid connects the shell 11 forming host cavity on the substrate 12 with substrate 12, acoustic-electric transducing chip 14 is installed in host cavity, in order to Transform Acoustic signal better, control chip 15 can be installed, be electrically connected between control chip 15 with acoustic-electric transducing chip 14.Acoustic-electric transducing chip 14 comprises vibrating diaphragm and backboard.In order to accept external acoustic waves, shell 11 is provided with tone-entering hole 110, when on the vibrating diaphragm that can be delivered to acoustic-electric transducing chip 14 after external acoustic waves enters tone-entering hole 110, causes vibrating diaphragm to move, and causes the distance between vibrating diaphragm and backboard to change, and capacitance changes and forms electric current.
As depicted in figs. 1 and 2, be sticked at the inwall of shell 11 and cover the composite web 20 of described tone-entering hole 110.Described composite web 20 comprises the first protection network 201 and the second protection network 203 of stretch tight zona 202 and zona 202 both sides of stretching tight described in being separately fixed at.Described first protection network and the second protection network adopt exotic material to make respectively, concrete, can be PU film (polyurethanes, Polyurethane, i.e. polyurethane film) or PI film (polyimide film, PolyimideFilm) in one.Described first protection network 201 and the second protection network 203 can be same material, also can be different materials.Described first protection network and the second protection network, effectively can play the effect of dust and water protection, and, can acoustic resistance be increased after increasing one deck net, reduce air inflow, and then reduce the damage to element, improve the reliability of microphone.The zona that stretches tight is adopted to fix described first protection network and the second protection network can so that the assembling of microphone, when assembling, glue is played at the zona edge that first will stretch tight, suction nozzle is utilized to hold the center of the first protection network or the second protection network, and be bonded on the zona that stretches tight and form composite web, after the glue solidifies, composite web is pasted onto on the inwall of shell.Like this, can play protection first protection network and the second protection network, make composite web smooth, can prevent from producing warpage in high frequency, reliability is higher.In the present embodiment, described first protection network and the second protection network all adopt epoxy glue bonding.
Certainly, this is only the utility model one preferably embodiment, in other execution modes selectable, described composite web also can be attached at the outer wall of shell 11, or be fixed on tone-entering hole inside, as long as covering tone-entering hole can be played, prevent dust and steam from entering in host cavity, namely can reach the purpose of this utility model.
As shown in Figure 3, for the schematic diagram of the another kind of execution mode of the utility model, it is roughly the same with the first execution mode, difference is: described tone-entering hole 110 ' is positioned on described substrate 12 ', adapt with it, described composite membrane 20 ' be sticked described substrate upper surface and cover described tone-entering hole.Its principle is identical with the first execution mode.
Compared with prior art, shell of the present utility model is coated with composite web, can prevents foreign material steam from entering microphone host cavity, the structure of described composite web can effectively prevent from producing warpage in high frequency simultaneously.
The foregoing is only better embodiment of the present utility model; protection range of the present utility model is not limited with above-mentioned execution mode; in every case those of ordinary skill in the art modify or change according to the equivalence that the utility model institute disclosure is done, and all should include in the protection range recorded in claims.
Claims (10)
1. a microphone, comprise the housing with host cavity, acoustic-electric transducing chip is provided with in described host cavity, described housing is provided with tone-entering hole, it is characterized in that: described housing is sticked and covers the composite web of described tone-entering hole, described composite web comprises stretch tight zona and the first protection network and the second protection network that are separately fixed at the zona upper and lower surface that stretches tight.
2. microphone according to claim 1, is characterized in that, described composite web is sticked on the inwall of housing.
3. microphone according to claim 1, is characterized in that, described composite web is sticked on the outer wall of housing.
4. microphone according to claim 1, is characterized in that: described composite web is contained in described tone-entering hole at least partly.
5. microphone according to claim 1, is characterized in that, described housing comprises substrate and lid is connected on shell substrate also being formed with it host cavity, and described tone-entering hole is positioned on described shell.
6. microphone according to claim 1, is characterized in that, described housing comprises substrate and lid is connected on shell substrate also being formed with it host cavity, and described tone-entering hole is positioned on described substrate.
7. the microphone according to claim 1 to 6 any one, is characterized in that, described first protection network adopts the one in polyurethane film or polyimide film.
8. microphone according to claim 7, is characterized in that: described second protection network adopts the one in polyurethane film or polyimide film.
9. microphone according to claim 1, is characterized in that: described first protection network and the second protection network adopt glue be bonded in described in stretch tight on zona.
10. microphone according to claim 9, is characterized in that: described glue is epoxy glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385796.2U CN204046817U (en) | 2014-07-14 | 2014-07-14 | Microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420385796.2U CN204046817U (en) | 2014-07-14 | 2014-07-14 | Microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046817U true CN204046817U (en) | 2014-12-24 |
Family
ID=52247436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420385796.2U Active CN204046817U (en) | 2014-07-14 | 2014-07-14 | Microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109922183A (en) * | 2019-02-21 | 2019-06-21 | 维沃移动通信有限公司 | A kind of receiver dust cover and terminal device |
| CN110324767A (en) * | 2019-06-28 | 2019-10-11 | 歌尔股份有限公司 | A kind of microfilter and acoustic equipment |
-
2014
- 2014-07-14 CN CN201420385796.2U patent/CN204046817U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109922183A (en) * | 2019-02-21 | 2019-06-21 | 维沃移动通信有限公司 | A kind of receiver dust cover and terminal device |
| CN110324767A (en) * | 2019-06-28 | 2019-10-11 | 歌尔股份有限公司 | A kind of microfilter and acoustic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |