GB2253117A - Capacitor microphone cartridge - Google Patents
Capacitor microphone cartridge Download PDFInfo
- Publication number
- GB2253117A GB2253117A GB9126840A GB9126840A GB2253117A GB 2253117 A GB2253117 A GB 2253117A GB 9126840 A GB9126840 A GB 9126840A GB 9126840 A GB9126840 A GB 9126840A GB 2253117 A GB2253117 A GB 2253117A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fixed electrode
- diaphragm
- dielectric material
- microphone cartridge
- material 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims description 15
- 239000003989 dielectric material Substances 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for microphones
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The cartridge has a dielectric material plate 20 coated with electrostatic material which is separate from a diaphragm 5. The plate 20 is arranged on top of a fixed electrode 16 with the diaphragm 5 beneath the fixed electrode. Several apertures 21 are peripherally provided in the fixed electrode 16 for controlling the directional and frequency characteristics. The diaphragm 5 is made thinner in comparison with conventional ones whereby the frequency characteristic is improved. The dielectric material plate 20 is made thicker than conventional whereby static electricity reserving capacity is enhanced. Such an arrangement reduces the number of parts in the cartridge and simplifies manufacture. <IMAGE>
Description
SPECIFICATION
TITLE OF THE INVENTION
CAPACITOR MICROPHONE CARTRIDGE
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a capacitor mierophone cartridge.
More particularly, the present invention relates to a capaitor mierophone cartridge having special feathers capable of controlling Hregtional and frequency characteristics.
2. Description Relative to the Prior Art.
A capacitor microphone cartridge is mounted to a telephone, @ape recorder, toy or microphone usd for converting an audio signal inte an electric signal. For example, as shown in Fig. 2 a capactor mierophone cartridgeis described in Japanese Patent Laid-open Application No. 63-27 5300. That is when reviewing this, it is structured in such a manner that the capacitor microphone cartridge comprise a case 1 having a through hole 2 at center of bottom thereof and attatched with a cover 3 at its
Exterior, An electrode ring 4 and a diaphragm 5 are fixed by adhering within the case 3 and a fixed electrode 6 and an insulator 7 are laid on the diaphragm 5. On the fixed electrode 6 there is a metal terminal plate 8.An amplifying element 9 is connected to the metal terminal plate 8 via an input lead 10 and an output lead 11 of the amplifying element 9 is connected to a printed circuit board 12 by a soldering 13.
However, since such conventional capaciter mierophone eartridge is tructured for its components such that the fixed electrode 6 and the metal electrode Pj ar:D sucessively connected on the top of the diaphragm 5 spread with a dielectric material and also the insulator 7 of eylindrical shape is required for insulation of the fixed electrode 6 and thereby a number of parts being of expensive in general are assembled, there has been problem that dimension of product becomes larger and assembling process becomes compliented as well as capacity becoming deterieratei.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention ro solve the pro- blem of such conventional capactor microphone cartridge.
In order to achieve the above and other objects and advantages of this Invention1 a capactor microphone cartridge in which an electrode.
ring and a diaphragm are provided within a case defined with a through hole at center of bottom side and mounted with a cover at its exterior and also an amplifying element is fixed to a printed circuit board by soldering, the capacitor microphone cartridge comprising: a cylindrical fixed electrode having a plurality of apertures defined at peripheral edge the fixed electrode so as to control directional and frequency characteristics and a protrusion portion protruded from the bottom of the fixed electrode, the fixed electrode is arranged on the diaphragm and connected to an input lead of said amplifying element at its top; an insulation ring for insulation the fixed electrode from the case; and a dielectric material pl.ate mounted on the protrusion portion of the fixed electrode and having a thickness so as to improve a statie electricity reserving capacity, the diaphragm having a thin thicknes is separately provided from the dielectric material plate so as to
enhance a frequency characteristic.
In accordance with the present invention, all of the parts can be autematically assembled by a through process without employing a number of parts being of expensinve as convention whereby manufactueing cost is rednend and thereby more improved product in capacity can be munufactured by making it thinner type.
The forgoing and other objects as well as advantages of the present invention will become clear by followng description of the ivention with reference to the accompanying drawinge.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, and to show how the same may be carried out into effect, reference will now be made, by way of example witb respect to the accompanying drawings, in which:
FIG. 1 is a cross sectional view of a capactor microphone cartridge according to the present invention, and
FIG. 2 is a cross sectional view of conventional capacitor microphone cartridge.
Throughout the drawings, like reference numerals and symbols are used for desingnating like or equivalent parts or portions, for simplicity of illustration and explanation.
DETAILED DESCRIPTION OF THE INVENTION Hereinafter the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a cross sectional view of a capaciter mierophone cartridge of the present invention, and it is constructed in such a manner that, in a capacitor mierophone cartridge in which an electrode ring 4 and a disphragm 5 are provided within a case 1 defined with through hole 2 at center of bottom thereof and mounted with a cover 3 at its exterior and also an ampligying element 9 is fixed to a printed circuit board 12 by a older lag 1.3, a fixed electrode 16 connected wi.th an input lead 10 of the amplifying element 9 insulated by an insulation ring 17 is laid on at the top of the diaphragm 5 and also a dielectric plate 20 spread with an electrostatic meterial is provided on its top side again and then several apertures 21 are defined at peripheral edge of the fixed electrode IF.
According to a capacitor microphone cartridge of the present invention constructed as above, since the dielectric material plate 20 separate- ly adhered on top of the fixed electrode 16 at a state that the fixed electrode 16 insulated from the case 3 by the insulation ring 17 is directly connected with the diaphragm 5. The diaphragm 5 can be made thinner in comparing with conventional one and thereby there is advantage that frequency characteristic can be improved, and simultaneously since the dielectric material plate 20 is separately provided from the diaphragm 5, thickness of the dielectric material plate 20 can be made thicker whereby static electricity reserving capacity is made to be bigger, therefore there is effect that capacity of the capacitor microphone cartridge can be remarkably improved.
Moredver, according to the capacitor mierophone cartridge of the present invention, since a plurality of through holes 21 are defined at peripheral edge of the fixed electrode 16, there is special feature sapable of controlling directional characteristie and fowquency characterissie.
Thus, the capacitor microphone cartridge of the present invention is a novel invention having an effect that its interier structure is improved and thereby the number of parts are deereased and manufacturing process is raduced, so that not only manufacturing cost can be decreased but also excellent product in capacity can be manufactured into more thinner -pc.
It wili be appreciated that the present invention is not restricted to the particular embodiment that has been described hereinbefore and that variations anti modifications may be matle therein without departing from the spirit and scope of the invention as defined in the appended claims and equivalents thereof.
Claims (3)
1. A capactor microphone cartridge in which an electrode ring and a diaphragm are provided within a case defined with a through hole at center of bottom side and mounted with a cover at its exterior and also an amplifying element is fixed to a printed circuit board by soldering, the capacitor microphone cartridge comprising:
a cylindrical fixed electrode having a plurality of apertures defined at peripheral edge said fixed electrode so as to control directional and frequency characteristics and a protrusion portion protruded from the bottom of said fixed electrode, said fixed electrode is arranged on said diaphragm and connected to an input lead of said amplifying element at its top;
an insulation ring for insulating said fixed electrode from said case; and
a dielectric material plate mounted on said protrusion portion of said fixed electrode and having a thickness so as to improve a static electricity reserving capacity, said diaphragm having a thin thickness is separately provided from said dielectric material plate so as to enhance a frequency characteristic.
2. A capacitor microphone cartridge substantially as herein described with reference to, and as illustrated in, Figure 1 of the accompanying drawing.
3. A capacitor microphone cartridge comprising a metallic casing having an end wall with a sound hole therein, an electrode ring and a diaphragm mounted within the casing and a printed circuit board carried by the casing and having an amplifying element fixed thereto, wherein the microphone cartridge further comprises a fixed electrode having a cylindrical portion provided with a plurality of apertures for controlling directional and frequency characteristics and an end wall portion having a central region, said fixed electrode being arranged on said diaphragm and being connected to an input of said amplifying element, an electrically insulating ring insulating the fixed electrode from the casing, and a dielectric material plate mounted on the central region and having a relatively large thickness for improving static electricity reserving capacity, the diaphragm having a relatively thin thickness and being separate from the dielectric material plate so as to enhance a frequency characteristic.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900021440A KR930003063B1 (en) | 1990-12-22 | 1990-12-22 | Condenser microphone cartridge |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9126840D0 GB9126840D0 (en) | 1992-02-19 |
GB2253117A true GB2253117A (en) | 1992-08-26 |
GB2253117B GB2253117B (en) | 1994-11-23 |
Family
ID=19308162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9126840A Expired - Fee Related GB2253117B (en) | 1990-12-22 | 1991-12-18 | Capacitor microphone cartridge |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH04227200A (en) |
KR (1) | KR930003063B1 (en) |
CN (1) | CN1022882C (en) |
GB (1) | GB2253117B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1718109A1 (en) * | 2005-04-29 | 2006-11-02 | BSE Co., Ltd. | Casing of condenser microphone |
US8848949B2 (en) | 2010-08-26 | 2014-09-30 | Kabushiki Kaisha Audio-Technica | Condenser microphone unit and condenser microphone |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101505420B1 (en) * | 2013-04-05 | 2015-03-26 | 싸니코전자 주식회사 | Electret Condenser Microphone |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5830399U (en) * | 1981-08-20 | 1983-02-28 | 三洋電機株式会社 | piezoelectric speaker |
JPS637454A (en) * | 1986-06-25 | 1988-01-13 | 吉野 茂 | Waterproof construction method using metal plate |
-
1990
- 1990-12-22 KR KR1019900021440A patent/KR930003063B1/en not_active IP Right Cessation
-
1991
- 1991-06-20 JP JP3148703A patent/JPH04227200A/en active Pending
- 1991-07-19 CN CN91104894A patent/CN1022882C/en not_active Expired - Fee Related
- 1991-12-18 GB GB9126840A patent/GB2253117B/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1718109A1 (en) * | 2005-04-29 | 2006-11-02 | BSE Co., Ltd. | Casing of condenser microphone |
US7620197B2 (en) | 2005-04-29 | 2009-11-17 | Bse Co., Ltd. | Casing of condenser microphone |
US8848949B2 (en) | 2010-08-26 | 2014-09-30 | Kabushiki Kaisha Audio-Technica | Condenser microphone unit and condenser microphone |
Also Published As
Publication number | Publication date |
---|---|
GB2253117B (en) | 1994-11-23 |
KR930003063B1 (en) | 1993-04-17 |
CN1022882C (en) | 1993-11-24 |
KR920014339A (en) | 1992-07-30 |
GB9126840D0 (en) | 1992-02-19 |
CN1062632A (en) | 1992-07-08 |
JPH04227200A (en) | 1992-08-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20061218 |