CN201197187Y - Vibration plate forming air groove and capacitance microphone using the same - Google Patents
Vibration plate forming air groove and capacitance microphone using the same Download PDFInfo
- Publication number
- CN201197187Y CN201197187Y CNU2008200091265U CN200820009126U CN201197187Y CN 201197187 Y CN201197187 Y CN 201197187Y CN U2008200091265 U CNU2008200091265 U CN U2008200091265U CN 200820009126 U CN200820009126 U CN 200820009126U CN 201197187 Y CN201197187 Y CN 201197187Y
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- CN
- China
- Prior art keywords
- mentioned
- back pole
- pole plate
- housing
- plate
- 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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- 239000012528 membrane Substances 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 1
- RMPWIIKNWPVWNG-UHFFFAOYSA-N 1,2,3,4-tetrachloro-5-(2,3,4-trichlorophenyl)benzene Chemical compound ClC1=C(Cl)C(Cl)=CC=C1C1=CC(Cl)=C(Cl)C(Cl)=C1Cl RMPWIIKNWPVWNG-UHFFFAOYSA-N 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Multimedia (AREA)
Abstract
The utility model relates to a vibrating plate provided with an air slot, as well as a capacitive microphone utilizing the vibrating plate. The capacitive microphone consists of a shell, the vibrating plate, a spacer, a back pole plate, a insulating base, a conducting base and a printed circuit board, wherein the shell is in a cylindrical shape with one side opened; the center part of the bottom surface of the shell has mesh sound holes; the vibrating plate has the air slot on a polar ring; when clinging to the shell, the air slot provides an air channel for the mesh sound holes in the center; a vibrating membrane is vibrated by means of sound pressure flowing in through the mesh sound holes; the spacer is used for forming a space between the vibrating plate and the back pole plate; the back pole plate has a sound hole; the insulating base is used for electrically insulating the back pole plate from the shell; the conducting base is electrically insulated from the shell by means of the insulating base, and simultaneously allows the back pole plate and the printed circuit board to conduct electricity; and the printed circuit board is provided with a connection terminal and a circuit component, is electrically connected with the back pole plate through the conducting base, and is connected with the vibrating plate through the shell.
Description
Technical field
The utility model relates to capacitance microphone, specifically, relates to oscillating plate that is formed with air groove and the capacitance microphone that utilizes this oscillating plate.
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: assemble oscillating plate, spacer ring, dead ring, backboard, conducting ring, printed circuit board (PCB) (PCB) integratedly afterwards in a housing, with the end curling (curling) of housing.
Fig. 1 is the side cross-sectional view of existing capacitance microphone assembly.The structure of existing capacitance microphone assembly is as follows: after oscillating plate 12, sept 13, back pole plate 14, insulating base 15 and conductive base 16 that housing 11 inner insertions are formed by vibrating membrane and polar ring, PCB17 is installed at last, the end of housing is curling.
At this moment, be formed with at the basal surface central portion of housing 11 and be used to sound hole 11a that external voice is flowed into, and the air groove 11b that the central authorities of basal surface are connected with periphery forms along radial direction, so that when housing 11 and oscillating plate 12 are close to, provide air flue.
On the other hand, also propose to have the housing of following capacitance microphone, on the housing of this capacitance microphone, be formed with the sound hole that is used to make the external voice inflow, but, on the sound hole, form mesh (mesh) in order to prevent that foreign matter from flowing into inside by this hole.
But for this capacitance microphone housing with mesh sound hole (mesh sound hole), in order to form mesh, its thickness is thinner than existing housing, so there is the problem that can not form air groove as in the past.
The utility model content
The utility model proposes in order to address the above problem, and its purpose is, a kind of oscillating plate of the air groove that is used for the air mediation and capacitance microphone that utilizes this oscillating plate of being formed with is provided.
To achieve these goals, oscillating plate of the present utility model is characterized in that, described oscillating plate is by constituting as the lower part; Vibrating membrane, this vibrating membrane vibrates by the acoustic pressure of going into by the sound orifice flow; And polar ring, this polar ring is the ring that is attached with above-mentioned vibrating membrane, for can be between the inboard of above-mentioned ring and the outside mediation air and be formed with air groove, and be formed for space that above-mentioned vibrating membrane is vibrated.
And to achieve these goals, capacitance microphone of the present utility model is characterized in that, described capacitance microphone is by constituting as the lower part: housing, this housing are the tubular of an opening, are formed with mesh sound hole at the central portion of basal surface; Oscillating plate, this oscillating plate is formed with air groove on polar ring, and when this oscillating plate was close to above-mentioned housing, this air groove provided air flue to the mesh sound hole of above-mentioned central authorities, made the vibrating membrane vibration by the acoustic pressure of going into by above-mentioned mesh sound orifice flow; Sept, this sept are used for forming the space between above-mentioned oscillating plate and back pole plate; Above-mentioned back pole plate forms sound hole on this back pole plate; Insulating base, this insulating base are used for above-mentioned back pole plate and above-mentioned housing electric insulation; Conductive base, this conductive base make above-mentioned back pole plate and PCB conduction simultaneously by above-mentioned insulating base and above-mentioned housing electric insulation; And above-mentioned PCB, splicing ear and circuit block are installed on this PCB, this PCB is electrically connected with above-mentioned back pole plate by above-mentioned conductive base, and is connected with above-mentioned oscillating plate by above-mentioned housing.
The utility model effect
According to the utility model, be formed with in use under the situation of housing in mesh sound hole, can provide air flue by the air groove that is formed on the oscillating plate, make vibrating membrane be in poised state so have so that the effect of good tonequality to be provided.
Description of drawings
Fig. 1 shows the side cross-sectional view of existing capacitance microphone assembly.
Fig. 2 shows the figure that is formed with the oscillating plate of air groove of the present utility model.
Fig. 3 shows the side cross-sectional view of capacitance microphone assembly of the present utility model.
Description of reference numerals
110: housing 110a: mesh sound hole
120: oscillating plate 122: vibrating membrane
124: polar ring 124a: air groove
130: sept (spacer) 140: back pole plate
140a: sound hole 150: insulating base (base)
160: conductive base 170:PCB
Embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.
Fig. 2 shows the figure that is formed with the oscillating plate of air groove of the present utility model.Fig. 3 shows the side cross-sectional view of capacitance microphone assembly of the present utility model.
As shown in Figure 2, oscillating plate 120 of the present utility model is made of vibrating membrane 122 and polar ring 124, this vibrating membrane 122 vibrates by the acoustic pressure of outside, this polar ring 124 is the rings that are attached with vibrating membrane 122, and housing 110 between form the space, so that vibrating membrane 122 can vibrate, and the both sides of polar ring 124 are formed with air groove 124a, so as can with the sound hole 110a mediation air that is arranged at housing basal surface central authorities.
As shown in Figure 3, the capacitance microphone assembly that has utilized this oscillating plate 120 that is formed with air groove 124a is by constituting as the lower part: barrel-type casing 110, and it is formed with mesh on the 110a of sound hole; Oscillating plate 120, it is formed with air groove 124a on polar ring 124, and when oscillating plate 120 and housing 110 were close to, this air groove 124a provided air flue to the sound hole 110a of central authorities, and by external pressure vibrating membrane 122 is vibrated; Sept 130, it is used for forming the space between oscillating plate 120 and back pole plate 140; Back pole plate 140, it forms sound hole; Insulating base 150, it is used for back pole plate 140 and housing 110 electric insulations; Conductive base 160, it is by insulating base 150 and housing 110 electric insulations, and makes back pole plate 140 and PCB 170 conductions; And PCB 170, on this PCB 170 splicing ear and circuit block are installed.
With reference to Fig. 3, in order to form mesh on the sound hole, housing 110 utilizes thickness to form cylinder or square tube than thin in the past metal material, an opening of this housing 110, and near the central authorities of basal surface, be formed with the mesh sound hole 110a that is used to make the external voice inflow.
For sept 130, back pole plate 140, insulating base 150, conductive base 160 and PCB 170, since identical with common capacitance microphone structure, explanation therefore omitted.
The action of the capacitance microphone of the present utility model that following explanation constitutes like this.
In the capacitance microphone that assembling finishes, the vibrating membrane 122 that plays the movable electrode effect is connected with the circuit of PCB 170 by the conductive path of being made up of polar ring 124 and housing 110, and the back pole plate 140 that plays the fixed electrode effect is connected with the circuit of PCB 170 by conductive base 160.
When the mesh sound hole 110a of external voice by housing flow into inside, vibrating membrane 122 vibrates, play the vibrating membrane 122 of movable electrode effect simultaneously and play distance change between the back pole plate 140 of fixed electrode effect, the electric capacity that thereupon is formed between fixed electrode and the movable electrode changes.And the semiconductor element that this changes in capacitance is installed on the PCB 170 carries out signal processing, is sent to the outside by splicing ear.
At this moment, in capacitance microphone of the present utility model, the space that is formed on vibrating membrane 122 rears is promptly carried on the back chamber (back chamber) and is connected with the air flue that arrives mesh sound hole 110a by conductive base 160, insulating base 150 and according to the air groove 124a that is formed on the polar ring of the present utility model.Thus, the air pressure in the space of being divided by vibrating membrane 122, both sides is in poised state, and good sound quality can be provided.
Be illustrated with reference to preferred embodiment of the present utility model in above-mentioned, but those skilled in the art should understand, in the thought of in not breaking away from claim scope of the present utility model, putting down in writing of the present utility model and the category in field, can carry out various corrections and change to the utility model.
Claims (2)
1, a kind of oscillating plate is characterized in that, this oscillating plate is by constituting as the lower part;
Vibrating membrane, this vibrating membrane vibrates by the acoustic pressure of going into by the sound orifice flow; And
Polar ring, this polar ring are the rings that is attached with above-mentioned vibrating membrane, for can be between the inboard of above-mentioned ring and the outside mediation air and be formed with air groove, and be formed for space that above-mentioned vibrating membrane is vibrated.
2, a kind of capacitance microphone is characterized in that, this capacitance microphone is by constituting as the lower part:
Housing, this housing are the tubular of an opening, are formed with mesh sound hole at the central portion of basal surface;
Oscillating plate, this oscillating plate is formed with air groove on polar ring, and when this oscillating plate was close to above-mentioned housing, this air groove provided air flue to the mesh sound hole of above-mentioned central authorities, made the vibrating membrane vibration by the acoustic pressure of going into by above-mentioned mesh sound orifice flow;
Sept, this sept are used for forming the space between above-mentioned oscillating plate and back pole plate;
Above-mentioned back pole plate forms sound hole on this back pole plate;
Insulating base, this insulating base are used for above-mentioned back pole plate and above-mentioned housing electric insulation;
Conductive base, this conductive base make above-mentioned back pole plate and printed circuit board (PCB) conduction simultaneously by above-mentioned insulating base and above-mentioned housing electric insulation; And
Above-mentioned printed circuit board (PCB) is equipped with splicing ear and circuit block on this printed circuit board (PCB), this printed circuit board (PCB) is electrically connected with above-mentioned back pole plate by above-mentioned conductive base, and is connected with above-mentioned oscillating plate by above-mentioned housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2020070010932U KR20090000180U (en) | 2007-07-03 | 2007-07-03 | Diaphragm with air groove and condenser microphone using the same |
| KR2020070010932 | 2007-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201197187Y true CN201197187Y (en) | 2009-02-18 |
Family
ID=40226220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200091265U Expired - Fee Related CN201197187Y (en) | 2007-07-03 | 2008-04-11 | Vibration plate forming air groove and capacitance microphone using the same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20090000180U (en) |
| CN (1) | CN201197187Y (en) |
| WO (1) | WO2009005211A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065362A (en) * | 2009-11-18 | 2011-05-18 | 宝星电子股份有限公司 | MEMS microphone package and packaging method |
| CN102771142A (en) * | 2011-02-21 | 2012-11-07 | 欧姆龙株式会社 | Microphone |
| CN104125530A (en) * | 2014-06-20 | 2014-10-29 | 宁波兴隆电子有限公司 | High-signal to noise ratio curve double-down microphone |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5639176B2 (en) | 2009-09-18 | 2014-12-10 | スマート チップ マイクロエレクトロニック シーオー．リミテッド | Electronic smoke |
| US10420374B2 (en) | 2009-09-18 | 2019-09-24 | Altria Client Services Llc | Electronic smoke apparatus |
| KR101947094B1 (en) | 2017-03-16 | 2019-02-12 | 소스트 주식회사 | Mems microphone having convex0concave shaped diaphragm |
| CN106976837B (en) * | 2017-04-24 | 2020-06-26 | 广东美的制冷设备有限公司 | Micro heater and processing method thereof |
| CN109223029B (en) * | 2018-09-30 | 2024-11-01 | 邱晓龙 | Sound collection device of wearable heart-lung detector |
| CN111449296A (en) * | 2020-04-22 | 2020-07-28 | 深圳市湃科集成技术有限公司 | Capacitive airflow sensor and electronic cigarette |
| CN111954138B (en) * | 2020-08-19 | 2025-01-07 | 苏州礼乐乐器股份有限公司 | A full-band silicon microphone with sound beam and sound tunnel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756640Y2 (en) * | 1978-09-30 | 1982-12-06 | ||
| JPS61219298A (en) * | 1985-03-26 | 1986-09-29 | Matsushita Electric Ind Co Ltd | Electret condenser microphone |
| JP2004320144A (en) * | 2003-04-11 | 2004-11-11 | Rion Co Ltd | Condenser microphone |
| KR20060119278A (en) * | 2005-05-19 | 2006-11-24 | 이승택 | Condenser microphone with internal air exhaust system |
-
2007
- 2007-07-03 KR KR2020070010932U patent/KR20090000180U/en not_active Ceased
-
2008
- 2008-04-03 WO PCT/KR2008/001860 patent/WO2009005211A1/en not_active Ceased
- 2008-04-11 CN CNU2008200091265U patent/CN201197187Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065362A (en) * | 2009-11-18 | 2011-05-18 | 宝星电子股份有限公司 | MEMS microphone package and packaging method |
| CN102771142A (en) * | 2011-02-21 | 2012-11-07 | 欧姆龙株式会社 | Microphone |
| CN104125530A (en) * | 2014-06-20 | 2014-10-29 | 宁波兴隆电子有限公司 | High-signal to noise ratio curve double-down microphone |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009005211A1 (en) | 2009-01-08 |
| KR20090000180U (en) | 2009-01-08 |
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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: 20090218 Termination date: 20140411 |