CN201142758Y - Full-shielding capacitor type miniature microphone - Google Patents
Full-shielding capacitor type miniature microphone Download PDFInfo
- Publication number
- CN201142758Y CN201142758Y CNU2008200220961U CN200820022096U CN201142758Y CN 201142758 Y CN201142758 Y CN 201142758Y CN U2008200220961 U CNU2008200220961 U CN U2008200220961U CN 200820022096 U CN200820022096 U CN 200820022096U CN 201142758 Y CN201142758 Y CN 201142758Y
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- base plate
- radome
- microphone
- mini
- sidewall
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Abstract
The utility model discloses a full-shield capacitance mini microphone which comprises a capacitance mini microphone unit with a lead and a shielding casing, a shielding cover matched with or adhered to the circuit board terminal of the capacitance mini microphone unit, and a lead hole formed on the shielding cover for the lead of the capacitance minitype microphone unit to pass through. The microphone adopts the shielding casing and the shielding cover to completely shield electronic elements and devices therein, and has the advantages of simple structure, low cost and good electromagnetic interference resistance. A required electromagnetic interference-resistant capacitance minitype microphone can be easily designed according to practical requirements.
Description
Technical field
The utility model relates to a kind of capacitance type minitype microphone, is not easy to be subjected to the interference of external electromagnetic signal, guarantees that the voice signal transmission is clear.
Background technology
In recent years, a large amount of capacitance type minitype microphones is applied in the electronic products such as mobile phone, notebook in order to receive the external sound signal, general capacitance type minitype microphone structure adopts one one end opening, the other end to be provided with to receive the cylindrical metal shell in sound hole of voice signal or square metal shell to add that a wiring board that electronic devices and components such as amplifier are installed forms, wiring board is with the openend sealing of shell, form an airtight space with shell, inside is equipped with various parts and forms a button capacitor.In this microphone structure, shell generally adopts metal material, and its main purpose is to reach anti-preferably electromagnetic interference effect, and the while wiring board generally need be provided with Copper Foil at two surface large areas and reach anti-electromagnetic interference effect.But along with the electromagnetic environment that electronic product faced becomes increasingly complex, original structure can not well satisfy the desired anti-electromagnetic interference effect of electronic product, and, it also is the mode that comparatively expends cost that the wiring board large tracts of land is provided with Copper Foil, has brought very big difficulty also for the circuit design of wiring board.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, with low cost, and can reach the whole shielding capacitor mini microphone of good anti-electromagnetic interference effect.
For solving the problems of the technologies described above, the technical solution of the utility model is: the whole shielding capacitor mini microphone, comprise the capacitance type minitype microphone unit that has lead-in wire and shield shell, snapping or be bonded in the radome of described capacitance type minitype microphone unit wiring board end, described radome is provided with the fairlead that passes for described capacitance type minitype microphone unit lead-in wire.
The improvement of the technical program is: described radome is the square tube or the cylindrical shape shielding cover of an end opening of aluminium, copper or alloy material making, and perhaps nonmetallic materials are coated with square tube or the cylindrical shape shielding cover that is coated with metal screen layer; Described square tube or cylindrical shape shielding cover comprise the base plate and the sidewall that is socketed in described microphone casing body periphery over against described capacitance type minitype microphone unit wiring board end.
The further improvement of the technical program is: the base plate of described radome is provided with a plurality of micropores, and described fairlead is arranged on the base plate of described radome.
Improvement of the technical scheme is: the base plate of described radome and sidewall are one.
Further improvement in the technical proposal is: the bottom edge of described radome is provided with circular step.
Further improvement in the technical proposal is: the interior of described radome is provided with viscose glue.
The another kind of technique scheme improves and is: the base plate of described radome and sidewall are splits, comprise a base plate and a sidewall, and described side wall ends is provided with the flexure plane towards the inboard, and described base plate is fixed on the described flexure plane of interior.
Another improvement of technique scheme is: the base plate of described radome and sidewall are splits, comprise a base plate and a sidewall, and described side wall ends is provided with the flexure plane towards the inboard, and described base plate is bonded on the described flexure plane of sidewall outside.
A kind of improvement of technique scheme is: the fairlead on the described radome base plate has one or more, and the micropore on the described radome base plate is etch pit or the punching hole of area between 0.001 to 1 square millimeter.
A kind of further improvement of technique scheme is: described capacitance type minitype microphone unit is a directive property capacitance type minitype microphone.
Described lead-in wire is that general bonding wire, coaxial cable, FPCB etc. connect lead-in wire; The sidewall of described radome and base plate can adopt single metal material, also can adopt various material, can adopt metal or alloys such as aluminium, copper, and the mode that also can adopt the nonmetallic materials plating to be coated with electric conducting material is made; Base plate preferably adopts sheet metal, also can adopt wire netting.
Owing to adopt technique scheme, the whole shielding capacitor mini microphone, comprise the capacitance type minitype microphone unit that has lead-in wire and shield shell, snapping or be bonded in the radome of described capacitance type minitype microphone unit wiring board end, described radome is provided with the fairlead that passes for described capacitance type minitype microphone unit lead-in wire; The utility model shields fully by shield shell and the radome electronic devices and components with microphone, not only simple in structure, with low cost, and can reach good anti-electromagnetic interference effect, can design needed anti-electromagnetic interference capacitance type minitype microphone according to the actual requirements at an easy rate.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the cutaway view of radome among the utility model embodiment two;
Fig. 3 is the upward view of radome among the utility model embodiment two;
Fig. 4 is the cutaway view of radome among the utility model embodiment three;
Fig. 5 is the upward view of radome base plate among the utility model embodiment three;
Fig. 6 is the structural representation of the utility model embodiment three;
Fig. 7 is the structural representation of the utility model embodiment four;
Fig. 8 is the structural representation of the utility model embodiment five.
Among the figure: 1. capacitance type minitype microphone body; 11. capacitance type minitype microphone pad; 12. lead; 13. wire insulation cover; 14. lead-in wire; 2. radome; 21. shield sidewall; 22. radome base plate; 23. fairlead; 24. micropore; 25. bend; 26. viscose glue; 27. step.
Embodiment
Embodiment one: Fig. 1 is the structural representation of the implementation case, and the whole shielding capacitor mini microphone comprises a full capacitance type minitype microphone unit 1 and a radome 2 of pointing to.Full sensing capacitance type minitype microphone unit 1 is a cylindrical shape, its wiring board one end outside is provided with a plurality of pads 11, be welded with a plurality of lead-in wires 14 that the signal of telecommunication that points to 1 generation of capacitance type minitype microphone unit entirely can be transferred out on the pad 11, lead-in wire 14 comprises the insulating case 12 of conductor wire 13 and protection conductor wire 13; Radome 2 is one one end opening, inside dimension and points to the radome that the suitable aluminum metallic material of capacitance type minitype microphone unit 1 external dimensions is made entirely, thereby form a cylinder side wall 21 and a base plate 22, the base plate 22 of radome 2 is provided with a plurality of fairleads 23; To point to capacitance type minitype microphone unit 1 part entirely and insert radome 2, and a plurality of lead-in wires 14 will be passed from a plurality of fairleads 23.The complete structure of pointing to capacitance type minitype microphone unit 1 inside belongs to known technology, and is not shown at this.
The whole shielding capacitor mini microphone of the implementation case structure, do not need the special anti-electromagnetic interference function design of on the wiring board of capacitance type minitype microphone unit, carrying out, and the radome that aluminum metallic material is made making is simple, cheap, and can reach good anti-electromagnetic interference effect.
Embodiment two: in view of the basic fit system of capacitance type minitype microphone unit and radome illustrates in case study on implementation 1, the cutaway view of only representing radome among the utility model embodiment two with Fig. 2, Fig. 3 are the upward views of radome among the utility model embodiment two.Than case study on implementation one, the difference of the implementation case is, the base plate 22 of radome 2 is provided with a plurality of micropores 24, micropore 24 can be made of etching process or Sheet Metal Forming Technology, micropore 24 areas are between 0.001 to 1 square millimeter, generally can be square or circular, Fig. 3 have showed the distribution and the position of the micropore 24 of the implementation case.
Increase the design of a plurality of micropores in the implementation case at the radome base plate, can be so that the better effects if of the anti-low-frequency disturbance of capacitance type minitype microphone.
Embodiment three: as Fig. 4 is the cutaway view of radome among the embodiment three, and Fig. 5 is the upward view of radome base plate among the embodiment three, and Fig. 6 is the structural representation of embodiment three.Than case study on implementation two, the difference of the implementation case is: the sidewall 21 of radome 2 and base plate 22 are made up of two independent parts, as Fig. 4 is the cutaway view of the implementation case radome, Fig. 5 is the upward view of radome base plate in the implementation case, one end of sidewall 21 has a bend 25 to the inside, base plate 22 is packed in the sidewall 21, and the baffle plate that relies on bend 25 to form is fixed; Sidewall 21 inside scribble viscose glue 26, the effect of viscose glue 26 is that capacitance type minitype microphone unit 1 is packed into behind the radome 2, can be with the two be adhesively fixed, avoid the loosening lead-in wire 14 that causes microphone unit 1 in position between microphone unit 1 and the radome 2 to be worn and pad 11 touches base plate 22 easily and causes short circuit; Capacitance type minitype microphone unit 1 is a uni-directional microphone, in this case, a plurality of micropores 24 on the base plate 22 not only can be so that the better effects if of the anti-low-frequency disturbance of capacitance type minitype microphone, and still can guarantee directive property effect and other electroacoustic performances of microphone.
Embodiment four: be the structural representation of embodiment four as Fig. 7, than case study on implementation three, the difference of the implementation case is: base plate 22 usefulness conducting resinls are bonded in bend 25 outsides of sidewall 21 1 ends, after microphone unit 1 is packed radome 2 into, just produced a space between base plate 22 and the microphone body because of the thickness of bend 25, this space can be used as the position of pad 11, and, because the existence in this space, lead-in wire 14 is not easy to be worn, just need not be at sidewall 21 inner coating viscosity glues 26.
Embodiment five: the implementation case makes improvements on the basis of case study on implementation two: Fig. 8 is the structural representation of present embodiment.Around the base plate of radome 2, an independently annulus 27 is installed, after microphone unit 1 is packed radome 2 into, with regard to having produced a space, can be obtained and case study on implementation four akin effects between base plate 22 and the microphone body because of the thickness of annulus 27.
Claims (10)
1. whole shielding capacitor mini microphone, it is characterized in that: comprise the capacitance type minitype microphone unit that has lead-in wire and shield shell, snapping or be bonded in the radome of described capacitance type minitype microphone unit wiring board end, described radome is provided with the fairlead that passes for described capacitance type minitype microphone unit lead-in wire.
2. whole shielding capacitor mini microphone according to claim 1, it is characterized in that: described radome is the square tube or the cylindrical shape shielding cover of an end opening of aluminium, copper or alloy material making, and perhaps nonmetallic materials are coated with square tube or the cylindrical shape shielding cover that is coated with metal screen layer; Described square tube or cylindrical shape shielding cover comprise the base plate and the sidewall that is socketed in described microphone casing body periphery over against described capacitance type minitype microphone unit wiring board end.
3. whole shielding capacitor mini microphone according to claim 2 is characterized in that: the base plate of described radome is provided with a plurality of micropores, and described fairlead is arranged on the base plate of described radome.
4. according to claim 2 or 3 described whole shielding capacitor mini microphones, it is characterized in that: the base plate of described radome and sidewall are one.
5. whole shielding capacitor mini microphone according to claim 4 is characterized in that: the bottom edge of described radome is provided with circular step.
6. according to claim 2 or 3 described whole shielding capacitor mini microphones, it is characterized in that: the interior of described radome is provided with viscose glue.
7. according to claim 2 or 3 described whole shielding capacitor mini microphones, it is characterized in that: the base plate of described radome and sidewall are splits, comprise a base plate and a sidewall, described side wall ends is provided with the flexure plane towards the inboard, and described base plate is fixed on the described flexure plane of interior.
8. according to claim 2 or 3 described whole shielding capacitor mini microphones, it is characterized in that: the base plate of described radome and sidewall are splits, comprise a base plate and a sidewall, described side wall ends is provided with the flexure plane towards the inboard, and described base plate is bonded on the described flexure plane of sidewall outside.
9. whole shielding capacitor mini microphone according to claim 3, it is characterized in that: the fairlead on the described radome base plate has one or more, and the micropore on the described radome base plate is etch pit or the punching hole of area between 0.001 to 1 square millimeter.
10. whole shielding capacitor mini microphone according to claim 9 is characterized in that: described capacitance type minitype microphone unit is a directive property capacitance type minitype microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200220961U CN201142758Y (en) | 2008-01-04 | 2008-01-04 | Full-shielding capacitor type miniature microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200220961U CN201142758Y (en) | 2008-01-04 | 2008-01-04 | Full-shielding capacitor type miniature microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142758Y true CN201142758Y (en) | 2008-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200220961U Expired - Lifetime CN201142758Y (en) | 2008-01-04 | 2008-01-04 | Full-shielding capacitor type miniature microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201142758Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711023A (en) * | 2012-07-04 | 2012-10-03 | 青岛海信移动通信技术股份有限公司 | Loudspeaker sound chamber space expanding method and audio output device |
| WO2017197738A1 (en) * | 2016-05-19 | 2017-11-23 | 中兴通讯股份有限公司 | Device for improving sound of capacitor, and terminal |
| CN108933974A (en) * | 2017-05-24 | 2018-12-04 | 北京小米移动软件有限公司 | Eliminate the device and mobile device of microphone interference |
-
2008
- 2008-01-04 CN CNU2008200220961U patent/CN201142758Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711023A (en) * | 2012-07-04 | 2012-10-03 | 青岛海信移动通信技术股份有限公司 | Loudspeaker sound chamber space expanding method and audio output device |
| CN102711023B (en) * | 2012-07-04 | 2015-01-21 | 青岛海信移动通信技术股份有限公司 | Loudspeaker sound chamber space expanding method and audio output device |
| WO2017197738A1 (en) * | 2016-05-19 | 2017-11-23 | 中兴通讯股份有限公司 | Device for improving sound of capacitor, and terminal |
| CN107404807A (en) * | 2016-05-19 | 2017-11-28 | 中兴通讯股份有限公司 | Device for improving sounding of capacitor and terminal with device |
| CN107404807B (en) * | 2016-05-19 | 2022-05-13 | 中兴通讯股份有限公司 | Device for improving sounding of capacitor and terminal with device |
| CN108933974A (en) * | 2017-05-24 | 2018-12-04 | 北京小米移动软件有限公司 | Eliminate the device and mobile device of microphone interference |
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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: 20081029 |
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| CX01 | Expiry of patent term |