CN201274561Y - Uni-directional capacitive microphone - Google Patents
Uni-directional capacitive microphone Download PDFInfo
- Publication number
- CN201274561Y CN201274561Y CNU2008201891747U CN200820189174U CN201274561Y CN 201274561 Y CN201274561 Y CN 201274561Y CN U2008201891747 U CNU2008201891747 U CN U2008201891747U CN 200820189174 U CN200820189174 U CN 200820189174U CN 201274561 Y CN201274561 Y CN 201274561Y
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- CN
- China
- Prior art keywords
- pole plate
- back pole
- metal spring
- points
- condenser microphone
- 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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Abstract
The utility model relates to a single-pointing capacitor microphone, which comprises a shell with an accommodating cavity; a soleplate of the shell is provided with a plurality of sound holes; a vibrating diaphragm, an insulation cushion, a back pole plate, a damping cushion, a back pole seat and a circuit board are arranged inside the accommodating cavity in turn from the interior to the exterior; the back pole plate, the back pole seat and the circuit board are provided with sound holes; the back pole seat is also provided with a contact electrode; both poles of the contact electrode are respectively connected with a first metal spring and a second metal spring; the first metal spring is electrically connected with the circuit board, and the second metal spring is electrically connected with the back pole plate. The elastic contact is adopted to form the electric connection form, so that the assembling is more compact, and the electric connection can be adequately ensured, and the consistence of the pointing indexes can be improved, thereby improving the quality of the product.
Description
Technical field
The utility model relates to the condenser microphone field, refers in particular to a kind of single condenser microphone that points to.
Background technology
Along with developing rapidly of communication career, condenser microphone is that its demand is increasing thereupon as a kind of acoustical-electrical transducer spare.It is several that condenser microphone is divided into full sensing, de-noising type and single sensing at present, and single directional property system that points to condenser microphone embodies with the sensitivity difference on 180 ° of directions of the positive 0 ° of direction and the back side of microphone; At present, existing single condenser microphone that points to includes members such as shell, wiring board, metal connection polar ring, back-pole base, back pole plate, damping, insulation spacer and vibrating diaphragm, be to be connected polar ring by this metal to be electrically connected between this wiring board and back pole plate, because this metal connects polar ring and belongs to rigid and contact with wiring board, back pole plate system, easily come in contact bad phenomenon after the assembly, and directional property is inconsistent, thereby influences product quality.Relevant existing correlation technique patent documentation can be consulted Chinese patent notification number CN2735701Y and CN201066931Y and hold within disclosed, does not add to give one by one at this and analyzes.
The utility model content
The utility model is at the existing disappearance of above-mentioned prior art, and main purpose is to provide a kind of assembly compactness, can guarantees electrical connection properties and promotes the conforming single condenser microphone that points to of directional gain.
For realizing above-mentioned purpose, the utility model is taked following technical scheme:
A kind of single condenser microphone that points to, comprise that one has the shell of containing cavity, this shell bottom plate is provided with hole, in this containing cavity, be provided with vibrating diaphragm, insulation spacer, back pole plate, damping pad, back-pole base and wiring board from inside to outside successively, be equipped with hole on this back pole plate, back-pole base, the wiring board, described backboard seat is provided with a contact electrode, these contact electrode the two poles of the earth have been right after first metal spring, second metal spring respectively, this first metal spring system and wiring board electrically connect, and this second metallic elastic system electrically connects with back pole plate.
Be provided with foam rubber cushion between described damping pad and the back pole plate.
Described back-pole base offers the hollow hole of a ccontaining contact electrode, the bottom of this back-pole base offers first accommodation space and second accommodation space around this hollow hole, described damping pad and foam rubber cushion are located in this first accommodation space, and described back pole plate is located in this second accommodation space.
Described shell bottom plate inboard is provided with a metal knitted net, and this metal knitted net is compressed by the support ring of vibrating diaphragm; This metal knitted net is a steel mesh.
The advantage of the utility model is to utilize contact electrode and is located at contact electrode two extreme metal springs to form electric connection with wiring board, back pole plate Elastic Contact respectively, so under elastic reaction, the assembly compactness, can fully guarantee mutual electric connection, promote the consistency of directional gain again, thereby improve the quality of products.
Description of drawings
Fig. 1 is the utility model combination back cross-sectional schematic;
Fig. 2 is the frequency response curve of the utility model on frontal and back side direction.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
See also shown in Figure 1ly, a kind of single condenser microphone that points to comprises shell 1, metal knitted net 2, vibrating diaphragm 3, insulation spacer 4, back pole plate 5, foam rubber cushion 6, damping pad 7, back-pole base 8 and wiring board 9, wherein:
Shell 1 is a metal material, and it has a containing cavity 11, and base plate is provided with hole 12.
Metal knitted net 2 can be steel mesh, is the base plate inboard of being located at shell 1, in order to dustproof.
Vibrating diaphragm 3 is located at metal knitted net 2 tops, and the support ring 31 of vibrating diaphragm 3 compresses this metal knitted net 2.
Insulation spacer 4 is to be located on the vibrating diaphragm 3.
Back pole plate 5 is to be located on the insulation spacer 4, and this back pole plate is provided with hole 51.
Foam rubber cushion 6 is to be located on the backboard 5, its role is to change the pressure of sound hole, to improve the quality of products.
Damping pad 7 is located on the foam rubber cushion 6.
Back-pole base 8 offers hollow hole 81 and sound hole 82, bottom at this back-pole base 8 offers first accommodation space 83 and second accommodation space 84 around this hollow hole 81, described damping pad 7 is located in this first accommodation space 83 with foam rubber cushion 6, and described back pole plate 5 is located in this second accommodation space 84.
Wiring board 9 is offered sound hole 91, and this wiring board 9 is to be located at the containing cavity 11 of sealing shell 1 on the back-pole base 8.
This wiring board 9 is to be connected by an electrical connecting unit with 5 of backboard plates, this electrical connecting unit system is made of contact electrode 10, first metal spring 20, second metal spring 30, wherein to be next to contact electrode 10 1 extreme for these first metal spring, 20 1 ends, and the other end is next on the wiring board 9; These second metal spring, 30 1 ends are next to contact electrode 10, and another is extreme, and the other end then is next on the back pole plate 5.So, during assembly, after compressing by wiring board 9, make first metal spring 20, second metal spring 30 be elastic deformation, thereby make the assembly compactness, and can guarantee mutual fully electrically contacting.
Have two-way sound source under the utility model operating state, one tunnel system sound hole from the wiring board enters in the containing cavity 11 of shell 1, and sound hole 82 arrives vibrating diaphragms 3 by damping pad 7, foam rubber cushion 6 and produces back side sound on back-pole base 8 then; Sound hole 12 directly arrives vibrating diaphragm 3 through metal knitted net 2 and produces front sound on another Lu Zecong shell 1 base plate, thereby front sound and back side sound can carry out the difference computing is shaken vibrating diaphragm 3, the capacity of the plane-parallel capacitor of compositions such as vibrating diaphragm 3, back pole plate 5 is changed, convert voice signal to the signal of telecommunication then, finally the signal of telecommunication is passed on the wiring board 9 by contact electrode 10 grades.
As Fig. 2, be the frequency response curve on 180 ° of directions of the positive 0 ° of direction and the back side of the utility model, test out the curve of sensitivity, directive property, wherein curve 1 is represented sensitivity, curve 2 is represented directive property, can find obviously that from figure the consistency of directional gain is preferable.
The utility model design focal point is to utilize contact electrode and is located at contact electrode two extreme metal springs to form electric connection with wiring board, back pole plate Elastic Contact respectively, substitute the hard way of contact of metal connection polar ring in the prior art, so under elastic reaction, assembly is convenient, compact conformation, can fully guarantee mutual electric connection, promote the consistency of directional gain again, thereby improve the quality of products.
The above, it only is the utility model preferred embodiment, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, a kind of single condenser microphone that points to, comprise that one has the shell of containing cavity, this shell bottom plate is provided with hole, in this containing cavity, be provided with vibrating diaphragm, insulation spacer, back pole plate, damping pad, back-pole base and wiring board from inside to outside successively, be equipped with hole on this back pole plate, back-pole base, the wiring board, it is characterized in that: described backboard seat is provided with a contact electrode, these contact electrode the two poles of the earth have been right after first metal spring, second metal spring respectively, this first metal spring system and wiring board electrically connect, and this second metallic elastic system electrically connects with back pole plate.
2, single condenser microphone that points to according to claim 1 is characterized in that: be provided with foam rubber cushion between described damping pad and the back pole plate.
3, single condenser microphone that points to according to claim 2, it is characterized in that: described back-pole base offers the hollow hole of a ccontaining contact electrode, the bottom of this back-pole base offers first accommodation space and second accommodation space around this hollow hole, described damping pad and foam rubber cushion are located in this first accommodation space, and described back pole plate is located in this second accommodation space.
4, single condenser microphone that points to according to claim 1, it is characterized in that: described shell bottom plate inboard is provided with a metal knitted net, and this metal knitted net is compressed by the support ring of vibrating diaphragm.
5, single condenser microphone that points to according to claim 1, it is characterized in that: described metal knitted net is a steel mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201891747U CN201274561Y (en) | 2008-08-27 | 2008-08-27 | Uni-directional capacitive microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201891747U CN201274561Y (en) | 2008-08-27 | 2008-08-27 | Uni-directional capacitive microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274561Y true CN201274561Y (en) | 2009-07-15 |
Family
ID=40884899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201891747U Expired - Fee Related CN201274561Y (en) | 2008-08-27 | 2008-08-27 | Uni-directional capacitive microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274561Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547907A (en) * | 2019-01-23 | 2019-03-29 | 东莞泉声电子有限公司 | Lesser electret capacitor microphone of noise coefficient and preparation method thereof |
-
2008
- 2008-08-27 CN CNU2008201891747U patent/CN201274561Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109547907A (en) * | 2019-01-23 | 2019-03-29 | 东莞泉声电子有限公司 | Lesser electret capacitor microphone of noise coefficient and preparation method thereof |
| CN109547907B (en) * | 2019-01-23 | 2024-01-05 | 东莞泉声电子有限公司 | Electret capacitor microphone and manufacturing method thereof |
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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: 20090715 Termination date: 20130827 |