CN201282554Y - Condenser microphone polar plate - Google Patents
Condenser microphone polar plate Download PDFInfo
- Publication number
- CN201282554Y CN201282554Y CNU2008201225106U CN200820122510U CN201282554Y CN 201282554 Y CN201282554 Y CN 201282554Y CN U2008201225106 U CNU2008201225106 U CN U2008201225106U CN 200820122510 U CN200820122510 U CN 200820122510U CN 201282554 Y CN201282554 Y CN 201282554Y
- Authority
- CN
- China
- Prior art keywords
- capacitor microphone
- polar plate
- substrate
- groove
- pole 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 - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000003340 mental effect Effects 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Images
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model relates to a polar plate of a capacitor microphone, which comprises a mental baseplate and an insulation column, wherein, a circular groove is formed on the polar plate of the capacitor microphone; the baseplate is circular or polygonal, and the column-shaped insulation column having the same height as the baseplate is embedded in the middle position of the baseplate in a tight-fit manner; the insulation column is embedded into the baseplate to form a whole, and a circular groove is formed on the periphery of the insulation column by adopting the mechanical processing method. In moist environment, a capacitor telex device made of a polar plate of a capacitor microphone provided with a groove gathers the wet gas in the groove and an air gap is formed in the groove so as to improve the insulativity between the vibration diaphragm and the polar plate. The polar plate of a capacitor microphone can effectively prevent the capacitor microphone from generating noise in moist environment effectively and the electroacoustic performance of the capacitor microphone is improved.
Description
Technical field
The utility model relates to a kind of electro-acoustic element microphone unit, relates in particular to a kind of capacitor microphone pole plate.
Background technology
The electro-acoustic element microphone can be divided into electrodynamic type by its transduction principle type, condenser type and piezoelectric microphone.The basic comprising of condenser microphone cartridge is by a vibrating diaphragm and a metal polar plate that is coated with metal level, middle being separated by with an insulation spacer forms the structure of a capacitor, and vibrating diaphragm produces vibration under the effect of sound wave, is about to acoustical signal and converts the signal of telecommunication to, sound is propagated in the conversion of realization acoustic-electric.Capacitor microphone pole plate adopts circular metal plate usually, and is drilled with the damping hole of some in the above at present, but after adopting such pole plate to make condenser microphone, under wet environment, condenser microphone is easy to generate bigger noise, influences the normal use of condenser microphone.
Summary of the invention:
The purpose of this utility model: provide a kind of capacitor microphone pole plate of novel structure, can prevent effectively that condenser microphone from producing noise under wet environment, improve the electroacoustic performance of condenser microphone.
To achieve these goals, the utility model is realized by the following technical solutions, a kind of capacitor microphone pole plate comprises metal substrate, and damping hole is set on substrate, it is characterized in that: described capacitor microphone pole plate is made of metal substrate and insulated column, capacitor microphone pole plate is provided with circular groove, and substrate is circular or is polygon that substrate is provided with many damping holes, so that during the vibrating diaphragm vibration, air flows; Described insulated column is cylindrical, and its height is identical with substrate, and tight fit is embedded in the centre position on the substrate, and substrate and insulated column are inlayed the back and formed one, and adopts machining process at the insulated column circumferential periphery circular groove to be set; Described insulated column adopts nonmetallic materials to make.
Advantage of the present utility model and good effect
The utility model capacitor microphone pole plate is made of metal substrate and insulated column, because circular groove is set on capacitor microphone pole plate, have the made condenser microphone of the capacitor microphone pole plate of groove under wet environment, make moisture accumulation in groove, the formed air-gap of groove, to improve the insulating properties between vibrating diaphragm and the pole plate, can prevent effectively that condenser microphone from producing noise under wet environment, improve the electroacoustic performance of condenser microphone
Description of drawings
Fig. 1 provides the structural representation of the utility model capacitor microphone pole plate.
Fig. 2 provides the sectional structure schematic diagram of Fig. 1.
Specific embodiments:
As shown in Figure 1 and Figure 2, below provide embodiment: the utility model capacitor microphone pole plate, comprise by substrate 1 and insulated column 2 and being formed that substrate 1 adopts metal material to make, profile is circular, also can make polygon according to the structure needs.On substrate 1, be provided with many damping holes, and be equipped with a through hole, be used to inlay insulated column 2 at centre bit.Insulated column 2 is cylindrical, adopts nonmetallic materials to make, and height is identical with substrate 1, and tight fit is embedded on the centre position of substrate 1, forms one.After insulated column 2 is inlayed with substrate 1, adopt machining process a circular groove 2a to be set, need also can be provided with a plurality of groove 2a as structure at the circumferential periphery of insulated column 2.The degree of depth of groove 2a and width adjust definite according to the size of substrate 1, select depth of groove usually about 0.2mm-0.5mm, and recess width is about 1.0mm.
The another kind of method that groove 2a on the capacitor microphone pole plate forms is, centre position boss with the upper end and the bottom of insulated column 2, make the circumferential periphery part recessed, after insulated column 2 and substrate 1 tight fit are inlayed, just on capacitor microphone pole plate, form a circular groove 2a.Used in force material is commercial prod.
Can constitute the utility model---capacitor microphone pole plate according to above-mentioned making.
Claims (3)
1, a kind of capacitor microphone pole plate comprises metal substrate, and damping hole is set on substrate, it is characterized in that: described capacitor microphone pole plate is made of metal substrate and insulated column, and pole plate is provided with circular groove, and substrate is circular or is polygon.
2, capacitor microphone pole plate according to claim 1, it is characterized in that: described insulated column is cylindrical, and its height is identical with substrate, and tight fit is embedded in the centre position on the substrate, substrate and insulated column are inlayed the back and are formed one, and at the insulated column circumferential periphery circular groove are set.
3, capacitor microphone pole plate according to claim 1 is characterized in that: described insulated column, adopt nonmetallic materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201225106U CN201282554Y (en) | 2008-09-16 | 2008-09-16 | Condenser microphone polar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201225106U CN201282554Y (en) | 2008-09-16 | 2008-09-16 | Condenser microphone polar plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282554Y true CN201282554Y (en) | 2009-07-29 |
Family
ID=40929418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201225106U Expired - Lifetime CN201282554Y (en) | 2008-09-16 | 2008-09-16 | Condenser microphone polar plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282554Y (en) |
-
2008
- 2008-09-16 CN CNU2008201225106U patent/CN201282554Y/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090729 |