CN201657311U - Single-pointed-direction capacitance type microphone - Google Patents
Single-pointed-direction capacitance type microphone Download PDFInfo
- Publication number
- CN201657311U CN201657311U CN2010201326443U CN201020132644U CN201657311U CN 201657311 U CN201657311 U CN 201657311U CN 2010201326443 U CN2010201326443 U CN 2010201326443U CN 201020132644 U CN201020132644 U CN 201020132644U CN 201657311 U CN201657311 U CN 201657311U
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- Prior art keywords
- acoustic resistance
- capacitive microphone
- wiring board
- unidirectional capacitive
- unidirectional
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Abstract
The utility model discloses a single-pointed-direction capacitance type microphone, which comprises a circuit board and a tubular conductive case, wherein the tubular conductive case is combined with the circuit board, sound holes are respectively arranged on the circuit board and at the bottom of the case, the circuit board and the case form a protector of the single-pointed-direction capacitance type microphone, the position inside the protector corresponding to the sound holes of the case is provided with a capacitance assembly, a sound resistance device and an electric connector are sequentially arranged between the capacitance assembly and the circuit board, the electric connector comprises an electric connecting element and a sound resistance fixing device, the electric connector and the case are isolated through an insulation cavity, and in addition, the sound resistance fixing device is in a plastic structure with a metal layer coated on the surface. When the design is adopted, on the premise of not influencing the acoustic performance of the microphone, the low-cost method of coating the metal layer on the plastic surface is adopted for forming the electric connector, the production cost can be reduced, and at the same time, the automatic production is more convenient.
Description
Technical field
The utility model relates to a kind of Electret Condencer Microphone, is specifically related to a kind of unidirectional capacitive microphone.
Background technology
Along with the expansion of electrical type consumption market, electronic products such as mobile phone, notebook obtain a large amount of application, and therefore, the uni-directional microphone of cost performance excellence has the market demand widely.As shown in Figure 5; cross-sectional view for unidirectional capacitive microphone in the prior art; comprise the wiring board 1 that has hole 11; the tubular external conductive casing 2 that has hole 21; wiring board 1 and tubular external conductive casing 2 are in conjunction with the protective device that forms unidirectional capacitive microphone; the inner side near sound hole 21 of protective device is equipped with capacitance component; capacitance component comprises the ring 41 that shakes; vibrating diaphragm 42; pole plate 44 and the insulation spacer 43 between pole plate 44 and vibrating diaphragm 42; the grid shell 51b of metal material and grating ring 51a form arrangements of electric connection; this arrangements of electric connection is electrically connected the electronic devices and components on pole plate 44 and the wiring board 1 12; the double acoustic resistance fixture of doing unidirectional capacitive microphone of grid shell 51b; grid shell 51b is the cap shape; and acoustic resistance unit (known as foam etc.) is installed in the inside of grid shell 51b; insulation cavity 3 fixed polar plate 44 and arrangements of electric connections, and itself and shell 2 are isolated.
The grid shell of this unidirectional capacitive microphone and grating ring all adopt the higher metal material of cost (as copper) to make, and are unfavorable for the saving of cost.So be necessary the unidirectional capacitive microphone of said structure is improved, to avoid above-mentioned defective.
The utility model content
Technical problem to be solved in the utility model provides a kind of unidirectional capacitive microphone, under the prerequisite that does not influence the microphone acoustical behavior, can reduce production costs.
For solving the problems of the technologies described above, the technical scheme that the utility model proposed is: a kind of unidirectional capacitive microphone, comprise wiring board and the tubular external conductive casing that combines with described wiring board, be respectively equipped with hole on described wiring board and the outer casing bottom, described wiring board and shell form the protective device of unidirectional capacitive microphone; The place, sound hole of the inner corresponding described shell of described protective device is provided with capacitance component; acoustic resistance unit and arrangements of electric connection are installed between described capacitance component and the wiring board successively; described arrangements of electric connection comprises electrical connector and acoustic resistance fixture; described arrangements of electric connection and shell are isolated by the insulation cavity, and: described acoustic resistance fixture is coated with the plastic construction of metal level for the surface.
As a kind of improvement, described electrical connector and acoustic resistance fixture are structure as a whole.
Improve as another kind, described electrical connector and described acoustic resistance fixture are for dividing body structure.
Improve as another kind, described electrical connector is a loop configuration.
As further improvement, described acoustic resistance fixture is a cap-like structure.
As a kind of improvement of technique scheme, described acoustic resistance unit is a foaming structure.
As further improvement, described acoustic resistance unit is a foam.
Another kind as technique scheme improves, and described acoustic resistance fixture is a slab construction.
As further improvement, described acoustic resistance unit is a wire netting.
Owing to adopt technique scheme: a kind of unidirectional capacitive microphone, comprise wiring board and the tubular external conductive casing that combines with described wiring board, be respectively equipped with hole on described wiring board and the outer casing bottom, described wiring board and shell form the protective device of unidirectional capacitive microphone; The place, sound hole of the inner corresponding described shell of described protective device is provided with capacitance component; acoustic resistance unit and arrangements of electric connection are installed between described capacitance component and the wiring board successively; described arrangements of electric connection comprises electrical connector and acoustic resistance fixture; described arrangements of electric connection and shell are isolated by the insulation cavity, and: described acoustic resistance fixture is coated with the plastic construction of metal level for the surface.This design under the prerequisite that does not influence the microphone acoustical behavior, adopts the method at frosting metal cladding with low cost to form arrangements of electric connection, can reduce production costs the automated production of being more convenient for simultaneously.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model embodiment one;
Fig. 2 is the cross-sectional view of the utility model embodiment one arrangements of electric connection;
Fig. 3 is the cross-sectional view of the utility model embodiment two;
Fig. 4 is the cross-sectional view of the utility model embodiment three;
Fig. 5 is the cross-sectional view of unidirectional capacitive microphone in the prior art.
Embodiment
Embodiment one:
The structure of the unidirectional capacitive microphone of this implementation process as shown in Figure 1; comprise wiring board 1 that has hole 11 and the tubular external conductive casing 2 that combines by modes such as crimpings with wiring board 1; wiring board 1 inner surface is provided with electronic devices and components 12 such as field effect transistor; the bottom of shell 2 has hole 21, and wiring board 1 and shell 2 form the protective device of this unidirectional capacitive microphone.The inner side near sound hole, shell 2 bottom 21 of this protective device is equipped with capacitance component; be provided with arrangements of electric connection 5 and acoustic resistance unit 6 between capacitance component and the wiring board 1; wherein capacitance component by the ring 41 that shakes, with ring 41 vibrating diaphragms that combine 42 that shake, have the pole plate 44 in hole and be used to isolate vibrating diaphragm 42 and forms, two electrodes of vibrating diaphragm 42 and pole plate 44 formation capacitance components with the insulation spacer 43 of pole plate 44.Pole plate 44 is electrically connected to wiring board 1 by arrangements of electric connection 5, and vibrating diaphragm 42 is electrically connected to wiring board 1 by shake ring 41 and shell 2.
The structure of arrangements of electric connection 5 as shown in Figure 2, its installation site in unidirectional capacitive microphone as shown in Figure 1, acoustic resistance fixture 51 by the be electrically connected T-Ring 52 and the cap-like structure of loop configuration is integrally formed, its manufacturing materials is preferably mechanical property and the approaching thermal plastic POM of metal, arrangements of electric connection 5 also is included in the metal level with conducting function 53 that the POM plating zinc on surface forms, and metal level 53 can constitute for materials such as zinc or copper; Pole plate 44 is realized being electrically connected with electronic devices and components 12 on the wiring board 1 by arrangements of electric connection 5.Acoustic resistance unit 6 in this implementation process is the material of foaming structure, and preferable material is a foam, and acoustic resistance unit 6 bonds together with acoustic resistance fixture 51.Insulation cavity 3 is used for fixing pole plate 44, and pole plate 44 and arrangements of electric connection 5 and shell 2 are isolated, and prevents they and shell 2 short circuits.
The arrangements of electric connection design of this unidirectional capacitive microphone owing to adopt the plastic construction of plating metal on surface, has reduced production cost; Simultaneously,, can produce, simplify production technology, reduce the number of part, be convenient to assembling, can improve consistency of product by modes such as injection mouldings because arrangements of electric connection is structure as a whole; Arrangements of electric connection is structure as a whole and can also avoids the friction between a plurality of parts to cause electrical connection properties bad.In this implementation process independently the T-Ring that is electrically connected of metal material also can adopt the metal-layer structure of the plastic material identical, the neither enforcement that influences this implementation process technical scheme with the acoustic resistance unit structure.
Embodiment two:
This implementation process is with the main distinction of above-mentioned implementation process: as shown in Figure 3, arrangements of electric connection 5 is that the acoustic resistance fixture 51 two parts independent structures by the be electrically connected T-Ring 52 and the cap-like structure of loop configuration assemble, and the acoustic resistance unit 6 and the acoustic resistance fixture 51 of foam material fixedly bond together.Acoustic resistance fixture 51 surfaces are provided with metal level 53, and the T-Ring 52 that is electrically connected that is electrically connected with metal level 53 is metal structures such as copper.
This design of this implementation process replaces traditional metal structure because acoustic resistance fixture utilization surface is coated with the plastic construction of metal level, can realize the technique effect that reduces production costs in the above-mentioned execution mode equally.
Embodiment three:
This implementation process is with the main distinction of above implementation process: as shown in Figure 4, arrangements of electric connection 5 is made of acoustic resistance fixture 51 two parts assembling of the be electrically connected T-Ring 52 and the slab construction of loop configuration, acoustic resistance unit 6 is a metal mesh structure, wherein, be provided with metal level 53 on acoustic resistance fixture 51 surfaces, the acoustic resistance unit 6 of metal mesh structure can be electrically connected pole plate 44 with metal level 53.The present embodiment can realize the technique effect that reduces production costs in the above-mentioned implementation process equally, and same, and be electrically connected T-Ring 52 and acoustic resistance fixture 51 can be structure as a whole, and avoids between the two the assembling back to produce friction and causes conductive effect bad.
In the enforcement of the invention, the POM material only is a preferred material, and the material that other mechanical properties are suitable also can; Electric conductivity good metal materials such as the metal level preferably copper of frosting, zinc also can adopt the plated material that is electrically connected can realized of routines such as nickel or gold; Acoustic resistance unit also can adopt to be provided with the material that micropore etc. can play damping action by the surface and to replace except that foaming structure (foam) or metal mesh structure that above-mentioned implementation process adopted; Metal level can be all or the local parts surface that is arranged on plastic material in this implementation process, and its thickness and size can be actual default according to producing, and the above-mentioned neither enforcement that influences the invention all is interpreted as protection range of the present utility model.
Claims (9)
1. a unidirectional capacitive microphone comprises wiring board and the tubular external conductive casing that combines with described wiring board, is respectively equipped with hole on described wiring board and the outer casing bottom, and described wiring board and shell form the protective device of unidirectional capacitive microphone; The place, sound hole of the inner corresponding described shell of described protective device is provided with capacitance component; acoustic resistance unit and arrangements of electric connection are installed between described capacitance component and the wiring board successively; described arrangements of electric connection comprises electrical connector and acoustic resistance fixture; described arrangements of electric connection and shell are isolated by the insulation cavity, it is characterized in that: described acoustic resistance fixture is coated with the plastic construction of metal level for the surface.
2. a kind of unidirectional capacitive microphone according to claim 1 is characterized in that: described electrical connector and acoustic resistance fixture are structure as a whole.
3. a kind of unidirectional capacitive microphone according to claim 1 is characterized in that: described electrical connector and described acoustic resistance fixture are for dividing body structure.
4. a kind of unidirectional capacitive microphone according to claim 3 is characterized in that: described electrical connector is a loop configuration.
5. according to the described a kind of unidirectional capacitive microphone of the arbitrary claim of claim 1 to 4, it is characterized in that: described acoustic resistance fixture is a cap-like structure.
6. a kind of unidirectional capacitive microphone according to claim 5 is characterized in that: described acoustic resistance unit is a foaming structure.
7. a kind of unidirectional capacitive microphone according to claim 6 is characterized in that: described acoustic resistance unit is a foam.
8. according to the described a kind of unidirectional capacitive microphone of the arbitrary claim of claim 1 to 4, it is characterized in that: described acoustic resistance fixture is a slab construction.
9. a kind of unidirectional capacitive microphone according to claim 7 is characterized in that: described acoustic resistance unit is a wire netting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201326443U CN201657311U (en) | 2010-03-13 | 2010-03-13 | Single-pointed-direction capacitance type microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201326443U CN201657311U (en) | 2010-03-13 | 2010-03-13 | Single-pointed-direction capacitance type microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657311U true CN201657311U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201326443U Expired - Lifetime CN201657311U (en) | 2010-03-13 | 2010-03-13 | Single-pointed-direction capacitance type microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024624A (en) * | 2013-01-16 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Earphone with embedded pressure-equalizing device |
| CN103079137A (en) * | 2013-01-16 | 2013-05-01 | 青岛歌尔声学科技有限公司 | Headset with pressure equalizer |
-
2010
- 2010-03-13 CN CN2010201326443U patent/CN201657311U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024624A (en) * | 2013-01-16 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Earphone with embedded pressure-equalizing device |
| CN103079137A (en) * | 2013-01-16 | 2013-05-01 | 青岛歌尔声学科技有限公司 | Headset with pressure equalizer |
| CN103024624B (en) * | 2013-01-16 | 2015-09-09 | 青岛歌尔声学科技有限公司 | With the earphone of embedded pressure-equalizing device |
| CN103079137B (en) * | 2013-01-16 | 2016-06-08 | 青岛歌尔声学科技有限公司 | Earphone with equalizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |