CN200950660Y - Curved casing for capacitance microphone - Google Patents
Curved casing for capacitance microphone Download PDFInfo
- Publication number
- CN200950660Y CN200950660Y CN 200620107860 CN200620107860U CN200950660Y CN 200950660 Y CN200950660 Y CN 200950660Y CN 200620107860 CN200620107860 CN 200620107860 CN 200620107860 U CN200620107860 U CN 200620107860U CN 200950660 Y CN200950660 Y CN 200950660Y
- Authority
- CN
- China
- Prior art keywords
- shell
- microphone
- outer casing
- entering hole
- utility
- 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 - Fee Related
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- Telephone Set Structure (AREA)
Abstract
The utility model discloses a curved shell used for capacitive microphone, which includes a shell and a sound-entering hole at the end of the shell. The shell end is provided with an inward ring-shaped reinforced rib, a lug boss or a drop pit. The utility model is mainly used for a microphone, of which the diameter is less than 10 mm; the capacitive microphone now has been being widely used in mobile phone, telephone, walkie-talkie, recorder, earphone, MP 3, MP 4, digital camera and laptop products etc. The device is of small volume, low production cost, stable performance, higher consistency of product and suitable for massive production.
Description
Technical field
The utility model relates to a kind of curved surface shell that is used for Electret Condencer Microphone.
Background technology
Electret Condencer Microphone is divided into: 1) back-polar type microphone, 2) preceding utmost point formula microphone, 3) the diaphragm-vibrating type microphone.
The back-polar type microphone working principle is: the sound wave that sound source is sent at first passes the dustcloth attached to case surface, arrive on the vibrating diaphragm by the tone-entering hole on the shell, sound wave orders about the vibrating diaphragm vibration, changed the capacity of parallel plate capacitor that constitutes by vibrating diaphragm, insulating washer and back pole plate, the corresponding variation takes place in the electromotive force that causes back pole plate and zona two interpolars, this variation is carried out corresponding signal process by the circuit on the printed circuit board (PCB) of rear end connection, finally exports corresponding acoustical signal with the form of the signal of telecommunication.
Preceding utmost point formula microphone
Preceding utmost point formula microphone working principle is: the sound wave that sound source is sent at first passes the dustcloth attached to case surface, by tone-entering hole on the shell and the tone-entering hole on the back pole plate, on the vibrating membrane of arrival by the fixing zona of insulation cavity, sound wave drives vibrating membrane vibration on the zona, make by back pole plate, the corresponding variation takes place with acoustical signal in the capacity of parallel plate capacitor that insulating washer and vibrating membrane constitute, the corresponding variation takes place in the electromotive force that causes back pole plate and zona two interpolars, this variation is carried out corresponding signal process by the circuit on the printed circuit board (PCB) of rear end connection, finally exports corresponding acoustical signal with the form of the signal of telecommunication.
Because the curved surface shell temporarily is not suitable for the diaphragm-vibrating type microphone at present, elaborates so locate not do.
The shell that is used for Electret Condencer Microphone comprises the tone-entering hole of shell and outer casing end, and the bottom of shell is smooth, assembles conductive gasket on the bottom of shell, is beneficial to keep certain interval between outer casing bottom and adjacent vibrating diaphragm or the back pole plate.
Summary of the invention
The purpose of this utility model provides a kind of curved surface shell that is used for Electret Condencer Microphone.
It comprises shell and at the tone-entering hole of outer casing end, is provided with inside cyclic reinforcing rib, boss or pit at outer casing end.
The utility model is mainly used in diameter less than 10 millimeters Electret Condencer Microphone, products such as the present extensive use mobile phone of Electret Condencer Microphone, phone, intercom, recorder, earphone, MP3, MP4, digital camera and laptop computer, this small product size is little, cost of manufacture is low, stable performance, finished product unification height is convenient to produce in enormous quantities.
Description of drawings
Accompanying drawing is the curved surface shell mechanism schematic diagram that is used for Electret Condencer Microphone.
Specific implementation method
As shown in the figure, the curved surface shell that is used for Electret Condencer Microphone comprises shell 1 and at the tone-entering hole 2 of outer casing end, is provided with inside cyclic reinforcing rib 3, boss or pit at outer casing end.
The utility model has kept the operation principle of electret capacitor microphone, has done improvement on structural member, is provided with inside cyclic reinforcing rib, boss or pit at outer casing end and replaces the smooth structure in original bottom.Be beneficial to keep certain interval between outer casing bottom and adjacent vibrating diaphragm or the back pole plate.Sound can evenly spread after entering this gap by the outer casing bottom tone-entering hole effectively, passes all sound holes on the polarising sheet of bottom.Thereby solve the shell tone-entering hole and need the consistent problem of contraposition with the back pole plate tone-entering hole, avoided shell to open single big tone-entering hole and back pole plate center simultaneously and opened that sensitivity of microphone that big sound hole brings descends and the problem of quality characteristic decline, and can effectively improve the structural strength of outer casing bottom, thereby improve consistency of product and stability.
The shell production process keeps original stretch forming process, is provided with inside cyclic reinforcing rib, boss or pit at outer casing end, has played the effect of assembling conductive gasket on the smooth shell in original bottom, and has reduced the operation of assembling conductive gasket.
Claims (1)
1. curved surface shell that is used for Electret Condencer Microphone, it comprises shell (1) and at the tone-entering hole (2) of outer casing end, it is characterized in that being provided with inside cyclic reinforcing rib (3), boss or pit at outer casing end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107860 CN200950660Y (en) | 2006-09-20 | 2006-09-20 | Curved casing for capacitance microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107860 CN200950660Y (en) | 2006-09-20 | 2006-09-20 | Curved casing for capacitance microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950660Y true CN200950660Y (en) | 2007-09-19 |
Family
ID=38893203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620107860 Expired - Fee Related CN200950660Y (en) | 2006-09-20 | 2006-09-20 | Curved casing for capacitance microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950660Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505074A (en) * | 2014-11-28 | 2015-04-08 | 欧朗科技（苏州）有限公司 | Anti-lost device curved-surface sound cavity structure matched with buzzer |
| CN109451382A (en) * | 2018-12-20 | 2019-03-08 | 歌尔科技有限公司 | Acoustic construction and electronic equipment |
-
2006
- 2006-09-20 CN CN 200620107860 patent/CN200950660Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505074A (en) * | 2014-11-28 | 2015-04-08 | 欧朗科技（苏州）有限公司 | Anti-lost device curved-surface sound cavity structure matched with buzzer |
| CN109451382A (en) * | 2018-12-20 | 2019-03-08 | 歌尔科技有限公司 | Acoustic construction and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20130920 |