CN201188681Y - Structural object for shielding high-frequency radio noise for microphone - Google Patents
Structural object for shielding high-frequency radio noise for microphone Download PDFInfo
- Publication number
- CN201188681Y CN201188681Y CNU2008201055552U CN200820105555U CN201188681Y CN 201188681 Y CN201188681 Y CN 201188681Y CN U2008201055552 U CNU2008201055552 U CN U2008201055552U CN 200820105555 U CN200820105555 U CN 200820105555U CN 201188681 Y CN201188681 Y CN 201188681Y
- Authority
- CN
- China
- Prior art keywords
- microphone
- frequency radio
- radio noise
- high frequency
- works
- 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.)
- Expired - Lifetime
Links
- 238000002955 isolation Methods 0.000 claims description 23
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical group CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 claims description 3
- 230000002285 radioactive effect Effects 0.000 abstract description 7
- MTLMVEWEYZFYTH-UHFFFAOYSA-N 1,3,5-trichloro-2-phenylbenzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1C1=CC=CC=C1 MTLMVEWEYZFYTH-UHFFFAOYSA-N 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- IHIDFKLAWYPTKB-UHFFFAOYSA-N 1,3-dichloro-2-(4-chlorophenyl)benzene Chemical compound C1=CC(Cl)=CC=C1C1=C(Cl)C=CC=C1Cl IHIDFKLAWYPTKB-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/0243—Printed circuits associated with mounted high frequency components
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Telephone Set Structure (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The utility model relates to a high-frequency radio noise-shielding structural object. When a microphone is installed on a product, the structural object wraps the microphone so as to cut off high-frequency radio noise which flows into the microphone from the outside. The high-frequency radio noise-shielding structural object is used for cutting off the outside high-frequency radio noise so as to protect the microphone which is installed on a printed circuit board on the product; a cylinder shape with an opening on one surface is formed so as to cover the microphone; a sound hole is formed at a position on the bottom surface corresponding to the sound hole of the microphone; a side surface is in a state that an outside diameter enlarges gradually from the bottom surface to the surface of the opening and declines; the end part of the surface of the opening outwards forms a wing part with a tension part; a certain pressure is applied to the printed circuit board of the product, and meanwhile, the wing part is contacted with the printed circuit board, thus the outside high-frequency radio noise is input to the grounding terminal of the printed circuit board of the product, and a gasket is also arranged on an outline. The structural object shields RF radioactive wave noise which flows into the microphone because an antenna is close to the microphone in recent mobile phones and the like which tend to be thinned, thereby improving the tone quality of the microphone.
Description
Technical field
The utility model relates to the technology of the high frequency radio noise (RF Noise) that is used to improve microphone.Specifically, the utility model relates to following microphone high frequency radio noise isolation works (RF NOISE SHIELDER FOR MICROPHONE), wherein, when being installed to microphone on the product, this works encases microphone, flow into microphone thereby cut off the high frequency radio noise from the outside.
Background technology
Usually, the capacitance microphone that is widely used in mobile communication terminal or sound equipment etc. is by constituting as the lower part: biased element; A pair of diaphragm/back-plate, it is used to form the capacitor (C) that changes accordingly with acoustic pressure (sound pressure); And field-effect transistor (JFET), it is used for buffer output signal.The capacitance microphone of this typical way is made in the following way: insert oscillating plate, spacer ring, dead ring, backboard and conducting ring successively in a housing after, place the printed circuit board (PCB) (PCB) that circuit block is installed at last, with the end of housing to PCB lateral bending song, thereby constitute an assembly.
On the other hand, along with the miniaturization and ultra-thinization of mobile phone, the antenna at back is moved to the microphone zone from speaker area, and the RF radioactive wave from antenna makes the noise of microphone very big thus.
But, be not used to cut off the shielding construction thing that flow into the RF radioactive wave of microphone from the microphone gabarit, so exist to the very weak problem of RF noise opposing in the past.
The utility model content
The utility model proposes in order to address the above problem, its purpose is, a kind of high frequency radio noise isolation works of microphone is provided, when being installed to microphone on the mobile phone, this shielding construction thing can shield from the RF noise that is present in microphone antenna radiation on every side and flow into microphone.
In order to address the above problem; high frequency radio noise of the present utility model cuts off uses the metallic shield works; it is the high frequency radio noise isolation works that is used to cut off the microphone on outside high frequency radio (RF) noise is installed in product with protection the printed circuit board (PCB) (PCB); described high frequency radio noise cuts off and is characterised in that with the metallic shield works; described works forms the tubular of an opening; so that can cover above-mentioned microphone; basal surface corresponding to the position in above-mentioned Mike's sound of the wind hole on form sound hole; the side is in external diameter and strengthens gradually and the form that tilts to opening surface from basal surface; the end of opening surface is formed with the alar part with tension portion laterally; so that the printed circuit board (PCB) (PCB) to the said goods is attached thereto when applying certain pressure, the high frequency radio noise input (sink) of outside is arrived the earth terminal of the printed circuit board (PCB) (PCB) of the said goods.
Above-mentioned high frequency radio noise cuts off also possesses liner with the metallic shield works in gabarit, goes out to prevent sound stream.
Description of drawings
Fig. 1 is a sectional view of using the user mode of high frequency radio noise isolation works according to the microphone of the utility model one embodiment.
Fig. 2 is a stereogram of using high frequency radio noise isolation works according to the microphone of the utility model embodiment.
Fig. 3 is a sectional view of using the user mode of high frequency radio noise isolation works according to the microphone of another embodiment of the utility model.
Description of reference numerals
10: high frequency radio noise isolation works 10a: the sound hole
10b: tension portion (tension) 20: microphone
30: mobile phone PCB 32: ground pad
40: liner (Gasket) 50: phone housing (case)
Embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.
Fig. 1 is a sectional view of using the user mode of high frequency radio noise isolation works according to the microphone of the utility model one embodiment.Fig. 2 is a stereogram of using high frequency radio noise isolation works according to the microphone of the utility model one embodiment.
As shown in Figures 1 and 2, form the lid structure of following metal material with high frequency radio noise isolation works 10 according to the microphone of the utility model one embodiment: be that an opening and external diameter strengthen the form that tilts gradually to opening surface from basal surface, and form sound hole 10a on the basal surface, the end of opening surface is formed with the alar part with tension portion 10b laterally.
This microphone of the present utility model is following crown cap structure with high frequency radio noise isolation works 10: be assemblied on the main PCB 30 in the mode that covers microphone 20 after on the main PCB 30 that is installed to product such as mobile phone, thereby can flow into the RF radioactive wave shielding of microphone.At this moment, the side wall portion of crown cap forms the inclined plane with certain angle, so that in the time of on the PCB 30 that microphone is assembled into mobile phone with high frequency radio noise isolation works 10, contact with the earth terminal 32 of PCB 30, and the earth terminal 32 of PCB applied certain pressure.When having used this crown cap, form metallic shield on the whole in microphone 20 gabarits, flow into microphone 20 thereby can shield the RF radioactive wave that radiates from the antenna that is present in around the microphone.
Fig. 3 is a sectional view of using the user mode of high frequency radio noise isolation works according to the microphone of another embodiment of the utility model.
Use high frequency radio noise isolation works as shown in Figure 3 according to the microphone of another embodiment of the utility model, when being provided with the shell 50 that possesses the microphone mounting groove in the mobile phone, liner 40 is installed on the gabarit of RF noise isolation works 10 in addition, thereby is prevented that the sound that may take place from flowing out between RF noise isolation works and microphone mounting groove works.
With reference to Fig. 3, the microphone 20 that is connected with connector is installed on the mobile phone PCB 30, the high frequency radio noise isolation works 10 that is provided with another embodiment of liner 40 is installed on the mobile phone PCB 30 in the mode that covers microphone 20, is close to earth terminal.And, microphone 20 is inserted in the microphone mounting groove that is formed on the product casing 50 by shielding construction thing 10, under the state that the product assembling finishes, external voice is sent to microphone 20 by shell with the sound hole 10a that is formed on the shielding construction thing, and outside RF radioactive wave is directed to the earth terminal of PCB 30 by high frequency radio noise isolation works 10, with shielding RF noise, thereby can prevent to cause leaking sound because of liner 40.
Industrial applicibility
As mentioned above, according to high frequency radio RF noise isolation works of the present utility model have as Lower effect: shielded in the mobile phone that is tending towards recently slimming etc. and flow near microphone because of antenna To the RF radioactive wave noise of microphone, thereby improved microphone tonequality. Especially, this practicality is new The high frequency radio RF noise isolation works of type is established liner in addition in gabarit, thus prevent might The sound that takes place between RF noise isolation works and the microphone mounting groove works flows out.
Claims (2)
1; a kind of high frequency radio noise cuts off uses the metallic shield works; this metallic shield works is the high frequency radio noise isolation works that is used to cut off the microphone on outside high frequency radio noise is installed in product with protection the printed circuit board (PCB); this high frequency radio noise cuts off and is characterised in that with the metallic shield works; this works forms the tubular of an opening; so that can cover above-mentioned microphone; basal surface corresponding to the position in above-mentioned Mike's sound of the wind hole on form sound hole; the side is in external diameter and strengthens gradually and the form that tilts to opening surface from basal surface; the end of opening surface is formed with the alar part with tension portion laterally; when the printed circuit board (PCB) of the said goods applies certain pressure, contact with it, the high frequency radio noise of outside is input to the earth terminal of the printed circuit board (PCB) of the said goods.
2, high frequency radio noise according to claim 1 cuts off and uses the metallic shield works, it is characterized in that, this high frequency radio noise cuts off also possesses liner with the metallic shield works in gabarit, goes out to prevent sound stream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020070008119 | 2007-05-17 | ||
| KR2020070008119U KR200440397Y1 (en) | 2007-05-17 | 2007-05-17 | Microphone high frequency wireless noise shielding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201188681Y true CN201188681Y (en) | 2009-01-28 |
Family
ID=40311702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201055552U Expired - Lifetime CN201188681Y (en) | 2007-05-17 | 2008-04-16 | Structural object for shielding high-frequency radio noise for microphone |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR200440397Y1 (en) |
| CN (1) | CN201188681Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257512A (en) * | 2017-07-06 | 2017-10-17 | 广东欧珀移动通信有限公司 | Microphone assembly and the terminal with it |
| CN107517414A (en) * | 2017-07-06 | 2017-12-26 | 广东欧珀移动通信有限公司 | Microphone assembly and terminal therewith |
| CN110311210A (en) * | 2019-07-19 | 2019-10-08 | 北京小米移动软件有限公司 | Electronic equipment and production method |
| CN110856063A (en) * | 2019-10-29 | 2020-02-28 | 歌尔科技有限公司 | Microphone electrostatic protection structure and electronic equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101561912B1 (en) | 2009-03-31 | 2015-10-20 | 엘지전자 주식회사 | A portable terminal and its microphone noise reduction method |
| KR101609118B1 (en) * | 2014-11-17 | 2016-04-05 | (주)파트론 | Microphone package |
-
2007
- 2007-05-17 KR KR2020070008119U patent/KR200440397Y1/en not_active Expired - Fee Related
-
2008
- 2008-04-16 CN CNU2008201055552U patent/CN201188681Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257512A (en) * | 2017-07-06 | 2017-10-17 | 广东欧珀移动通信有限公司 | Microphone assembly and the terminal with it |
| CN107517414A (en) * | 2017-07-06 | 2017-12-26 | 广东欧珀移动通信有限公司 | Microphone assembly and terminal therewith |
| CN107517414B (en) * | 2017-07-06 | 2023-10-03 | 深圳市欢太科技有限公司 | Microphone assembly and terminal with same |
| CN110311210A (en) * | 2019-07-19 | 2019-10-08 | 北京小米移动软件有限公司 | Electronic equipment and production method |
| CN110856063A (en) * | 2019-10-29 | 2020-02-28 | 歌尔科技有限公司 | Microphone electrostatic protection structure and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR200440397Y1 (en) | 2008-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |
|
| CX01 | Expiry of patent term |