CN1933679A - Waterpoof and dampproof electret capacitance microphone - Google Patents
Waterpoof and dampproof electret capacitance microphone Download PDFInfo
- Publication number
- CN1933679A CN1933679A CN 200610069116 CN200610069116A CN1933679A CN 1933679 A CN1933679 A CN 1933679A CN 200610069116 CN200610069116 CN 200610069116 CN 200610069116 A CN200610069116 A CN 200610069116A CN 1933679 A CN1933679 A CN 1933679A
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- water
- metal shell
- pole plate
- vibrating diaphragm
- back pole
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Abstract
An electret-capacity microphone of waterproof and antimoisture type is prepared as setting voice hole at sealed end of metal shell; fixing waterproof screen at external side of said voice hole for avoiding dust or moisture to enter internal of microphone; superposing support ring of water blocking screen, water blocking screen, vibration diaphragm, insulation pad, back polar plate, polar ring and printed circuit board in sequence in metal shell.
Description
Technical field
The present invention relates to a kind of electret capacitor microphone.
Background technology
Disclose multiple electret microphone in the prior art, they all include the capacitor unit that is made of back pole plate and vibrating diaphragm, are used to receive sound wave to convert the signal of telecommunication of expression sound wave to.
Electret microphone in use, if steam enters into capacitor unit, water vapor condensation forms moisture film or water droplet on the capacitor unit surface then, when two surface spacings dwindle in the capacitor unit course of work, lip-deep moisture film or water droplet touch another surface, will cause capacitor unit to lose efficacy, can not accurately change and transmit acoustic information.
The method of existing water-proof function is that waterproof sheet or antidrip thin slice are set, to cover on the sound hole of adopting the line part.For anti-sealing infiltrates sheet material, just need to improve the fastness to water of this sheet material.But problem is if make the high sheet material thickness thickening of fastness to water, and aeration variation is then pronounced or the tonequality characteristic of adopting the line part correspondingly degenerates.That is, in order to improve fastness to water, just produced the thickness that will increase sheet material, perhaps reduce the aperture of the minute aperture that forms again on the porousness thin slice, the tonequality characteristic that will make pronunciation like this or adopt the line part degenerates.
Summary of the invention
Technical problem to be solved by this invention provides the waterpoof and dampproof electret capacitance microphone of a kind of water resistance height and acoustical sound.
For achieving the above object, technical scheme of the present invention is: waterpoof and dampproof electret capacitance microphone, comprise metal shell, the blind end of described housing is provided with hole, the lateral surface in described sound hole is installed with and prevents that dust or water smoke from entering into the anti-network of rivers of microphone inside from described sound hole, also comprise overlaying successively in the described metal shell
The water-blocking net support ring, it is positioned at the inboard of described housings close end and circlewise, is used to support water-blocking net, and as the electric connecting part of water-blocking net and metal shell;
Water-blocking net, the stainless (steel) wire of disk shape, and stainless (steel) wire is more than 500 orders;
The vibrating diaphragm support ring between described water-blocking net in its seat and the vibrating diaphragm and circlewise, is used to keep do not contact mutually between water-blocking net and the vibrating diaphragm, and as the electric connecting part between water-blocking net and the vibrating diaphragm;
The side that vibrating diaphragm, vibrating diaphragm are covered with metal level is electrically connected with described vibrating diaphragm support ring;
Insulation spacer in the form of a ring, between vibrating diaphragm and back pole plate, is used to remain in the distance between vibrating diaphragm and the back pole plate;
Back pole plate is the disk shape, and a side of the electret film of described back pole plate contacts with insulation spacer by polar ring insulating barrier 8a, described back pole plate and the insulation of described metal shell;
Polar ring, the ring-type electric conductor is between back pole plate and printed substrate, as the electric conductor between back pole plate and the printed substrate;
The polar ring insulating barrier between the excircle side and excircle side and described metal shell of described polar ring and back pole plate, keeps the insulation between described polar ring and the described metal shell;
Printed substrate, be positioned at polar ring after, and constitute the cylinder blanket space with metal shell; The medial surface that printed substrate is positioned at outer casing space is provided with the conductive strips that contact with polar ring, and the lateral surface that printed substrate is positioned at outer casing space is provided with output electrode;
The openend of described metal shell radially inwardly bends towards printed substrate and makes between described polar ring, back pole plate, insulation spacer, vibrating diaphragm, water-blocking net and the water-blocking net support ring and is maintained fixed contact;
As a kind of improvement, the described anti-network of rivers is the anti-network of rivers of vinal vinyl paper, and the waterproof reticular density is 30-40g/m
2, the anti-network of rivers the two-layer of folded and edge bonding of attaching most importance to.
As a kind of improvement, described polar ring insulating barrier is the insulation enamelled coating that is coated in described polar ring excircle side, perhaps be sleeved on the workpiece of described polar ring excircle side, perhaps be coated in described metal shell medial surface and corresponding to the insulation enamelled coating of described polar ring excircle side.
As a kind of improvement, described water-blocking net support ring and described metal shell are integral structure.
Owing to adopt technique scheme, waterpoof and dampproof electret capacitance microphone, comprise metal shell, the blind end of described housing is provided with hole, the lateral surface in described sound hole is installed with and prevents that dust or water smoke from entering into the anti-network of rivers of microphone inside from described sound hole, also comprise the water-blocking net support ring, water-blocking net, vibrating diaphragm, insulation spacer, back pole plate, polar ring and the printed substrate that overlay successively in the metal shell; The setting of water-blocking net, make by the anti-network of rivers steam be blocked, compile and dewfall at this, blocking-up steam or water droplet enter the electric capacity that vibrating diaphragm, insulation spacer and back pole plate are formed, simultaneously, water-blocking net is a rigid mesh, can not cause obstruction to sound wave, and transaudient effect keeps better.The present invention can reach following effect at waterproof and dampproof aspect of performance:
1. Hose Test: experimental condition: by requirement in the GB/T 2423-38-90 test standard, water pressure 80～100KPa discharge is 10 ± 0.5L/min.1min/m
2Duration 5min, distance 300～500mm places after 12 hours the measurement sensitivity variation less than ± 3dB.
2. water test: experimental condition: immersed depth 2.0m, duration 2h take out to place after 24 hours measurement sensitivity and changes less than ± 3dB.
From test class, reached International Industry dustproof and waterproof grade IP (JIS) 57.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the expanded view of embodiment of the invention component units.
Embodiment
As shown in Figure 1 and Figure 2, waterpoof and dampproof electret capacitance microphone, comprise metal shell 1, the blind end of described housing 1 is provided with hole 1a, the lateral surface of described sound hole 1a is installed with and prevents that dust or water smoke from entering into the anti-network of rivers 10 of microphone inside from described sound hole 1a, the described anti-network of rivers 10 is the anti-network of rivers of vinal vinyl paper, and the waterproof reticular density is 30-40g/m
2, the anti-network of rivers 10 be overlapping and the edge bond two-layer; Also comprise and overlaying successively in the described metal shell 1
Water-blocking net support ring 2, it is positioned at the inboard of described housing 1 blind end and circlewise, is used to support water-blocking net 3, and as the electric connecting part of water-blocking net 3 and metal shell 1; Described water-blocking net support ring 2 is an integral structure with described metal shell 1, can once finish in the technology of punching press housing like this.
Water-blocking net 3, the stainless (steel) wire of disk shape, and stainless (steel) wire is more than 500 orders, and stainless (steel) wire has corrosion resistant characteristic, and can not cause obstruction to sound wave, and transaudient effect keeps better.
Vibrating diaphragm support ring 4, it between described water-blocking net 3 and vibrating diaphragm 5 and circlewise is used to keep do not contact mutually between water-blocking net 3 and the vibrating diaphragm 5, and as the electric connecting part between water-blocking net 3 and the vibrating diaphragm 5.
The side that vibrating diaphragm 5, vibrating diaphragm 5 are covered with metal level is electrically connected with described vibrating diaphragm support ring 4;
Insulation spacer 6 in the form of a ring, between vibrating diaphragm 5 and back pole plate 7, is used to remain in the distance between vibrating diaphragm 5 and the back pole plate 7.
Polar ring insulating barrier 8a between the excircle side and excircle side and described metal shell 1 of described polar ring 8 and back pole plate 7, keeps the insulation between described polar ring 8 and the described metal shell 1; Described polar ring insulating barrier 8a is the workpiece that is sleeved on described polar ring 8 and back pole plate 7 excircle sides, perhaps is coated in described metal shell 1 medial surface and corresponding to the insulation enamelled coating of described polar ring 8 and back pole plate 7 excircle sides.
Printed substrate 9, be positioned at polar ring 8 after, and constitute the cylinder blanket space with metal shell 1; The medial surface that printed substrate 9 is positioned at outer casing space is provided with the conductive strips that contact with polar ring 8, and the lateral surface that printed substrate 9 is positioned at outer casing space is provided with output electrode.
The openend of described metal shell 1 radially inwardly bends towards printed substrate 9 and makes between described polar ring 8, back pole plate 7, insulation spacer 6, vibrating diaphragm 5, vibrating diaphragm support ring 4, water-blocking net 3 and the water-blocking net support ring 2 and is maintained fixed contact.
Claims (4)
1. waterpoof and dampproof electret capacitance microphone, comprise metal shell (1), the blind end of described housing (1) is provided with hole (1a), the lateral surface in described sound hole (1a) is installed with and prevents that dust or water smoke from entering into the anti-network of rivers (10) of microphone inside from described sound hole (1a), is characterized in that: also comprise overlaying successively in the described metal shell (1)
Water-blocking net support ring (2), it is positioned at the inboard of described housing (1) blind end and circlewise, is used to support water-blocking net (3), and as the electric connecting part of water-blocking net (3) and metal shell (1);
Water-blocking net (3), the stainless (steel) wire of disk shape, and stainless (steel) wire is more than 500 orders;
Vibrating diaphragm support ring (4), it is positioned between described water-blocking net (3) and the vibrating diaphragm (5) and circlewise, is used to keep do not contact mutually between water-blocking net (3) and the vibrating diaphragm (5), and as the electric connecting part between water-blocking net (3) and the vibrating diaphragm (5);
The side that vibrating diaphragm (5), vibrating diaphragm (5) are covered with metal level is electrically connected with described vibrating diaphragm support ring (4);
Insulation spacer (6) in the form of a ring, is positioned between vibrating diaphragm (5) and the back pole plate (7), is used to remain in the distance between vibrating diaphragm (5) and the back pole plate (7);
Back pole plate (7) is the disk shape, and a side of the electret film of described back pole plate (7) contacts with insulation spacer (6), and described back pole plate (7) is by polar ring insulating barrier (8a) and described metal shell (1) insulation;
Polar ring (8), the ring-type electric conductor is positioned between back pole plate (7) and the printed substrate (9), as the electric conductor between back pole plate (7) and the printed substrate (9);
Polar ring insulating barrier (8a) is positioned between the excircle side and described metal shell (1) of described polar ring (8) and back pole plate (7), keeps the insulation between described polar ring (8) and the described metal shell (1);
Printed substrate (9), be positioned at polar ring (8) after, and constitute the cylinder blanket space with metal shell (1); The medial surface that printed substrate (9) is positioned at outer casing space is provided with the conductive strips that contact with polar ring (8), and the lateral surface that printed substrate (9) is positioned at outer casing space is provided with output electrode;
The openend of described metal shell (1) radially inwardly bends towards printed substrate (9) and makes between described polar ring (8), back pole plate (7), insulation spacer (6), vibrating diaphragm (5), vibrating diaphragm support ring (4), water-blocking net (3) and the water-blocking net support ring (2) and is maintained fixed contact;
2. waterpoof and dampproof electret capacitance microphone as claimed in claim 1 is characterized in that: the described anti-network of rivers (10) is the anti-network of rivers of vinal vinyl paper, and the waterproof reticular density is 30-40g/m
2, the anti-network of rivers (10) be overlapping and the edge bond two-layer.
3. waterpoof and dampproof electret capacitance microphone as claimed in claim 1, it is characterized in that: described polar ring insulating barrier (8a) is for being sleeved on the workpiece of described polar ring (8) and back pole plate (7) excircle side, perhaps is coated in described metal shell (1) medial surface and corresponding to the insulation enamelled coating of described polar ring (8) and back pole plate (7) excircle side.
4. waterpoof and dampproof electret capacitance microphone as claimed in claim 1 is characterized in that: described water-blocking net support ring (2) is an integral structure with described metal shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069116 CN1933679B (en) | 2006-09-30 | 2006-09-30 | Waterpoof and dampproof electret capacitance microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069116 CN1933679B (en) | 2006-09-30 | 2006-09-30 | Waterpoof and dampproof electret capacitance microphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1933679A true CN1933679A (en) | 2007-03-21 |
| CN1933679B CN1933679B (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610069116 Expired - Fee Related CN1933679B (en) | 2006-09-30 | 2006-09-30 | Waterpoof and dampproof electret capacitance microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1933679B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045631A (en) * | 2009-10-19 | 2011-05-04 | 宝星电子股份有限公司 | Condenser microphone |
| CN104113801A (en) * | 2014-06-20 | 2014-10-22 | 宁波兴隆电子有限公司 | Waterproof microphone |
| CN105578370A (en) * | 2016-03-15 | 2016-05-11 | 深圳捷力泰科技开发有限公司 | Electret microphone |
| US9363589B2 (en) | 2014-07-31 | 2016-06-07 | Apple Inc. | Liquid resistant acoustic device |
| US9681210B1 (en) | 2014-09-02 | 2017-06-13 | Apple Inc. | Liquid-tolerant acoustic device configurations |
| US9811121B2 (en) | 2015-06-23 | 2017-11-07 | Apple Inc. | Liquid-resistant acoustic device gasket and membrane assemblies |
| US9820038B2 (en) | 2013-09-30 | 2017-11-14 | Apple Inc. | Waterproof speaker module |
| CN108989959A (en) * | 2018-08-09 | 2018-12-11 | 京东方科技集团股份有限公司 | Electret microphone and its manufacturing method, display device |
| US10209123B2 (en) | 2016-08-24 | 2019-02-19 | Apple Inc. | Liquid detection for an acoustic module |
| WO2019140575A1 (en) * | 2018-01-17 | 2019-07-25 | Hewlett-Packard Development Company, L.P. | Waterproof sound-transmission membranes |
| US10425738B2 (en) | 2014-04-30 | 2019-09-24 | Apple Inc. | Evacuation of liquid from acoustic space |
-
2006
- 2006-09-30 CN CN 200610069116 patent/CN1933679B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045631A (en) * | 2009-10-19 | 2011-05-04 | 宝星电子股份有限公司 | Condenser microphone |
| US9820038B2 (en) | 2013-09-30 | 2017-11-14 | Apple Inc. | Waterproof speaker module |
| US10750287B2 (en) | 2014-04-30 | 2020-08-18 | Apple Inc. | Evacuation of liquid from acoustic space |
| US10425738B2 (en) | 2014-04-30 | 2019-09-24 | Apple Inc. | Evacuation of liquid from acoustic space |
| CN104113801A (en) * | 2014-06-20 | 2014-10-22 | 宁波兴隆电子有限公司 | Waterproof microphone |
| US9363589B2 (en) | 2014-07-31 | 2016-06-07 | Apple Inc. | Liquid resistant acoustic device |
| US9681210B1 (en) | 2014-09-02 | 2017-06-13 | Apple Inc. | Liquid-tolerant acoustic device configurations |
| US9811121B2 (en) | 2015-06-23 | 2017-11-07 | Apple Inc. | Liquid-resistant acoustic device gasket and membrane assemblies |
| CN105578370A (en) * | 2016-03-15 | 2016-05-11 | 深圳捷力泰科技开发有限公司 | Electret microphone |
| US10209123B2 (en) | 2016-08-24 | 2019-02-19 | Apple Inc. | Liquid detection for an acoustic module |
| WO2019140575A1 (en) * | 2018-01-17 | 2019-07-25 | Hewlett-Packard Development Company, L.P. | Waterproof sound-transmission membranes |
| CN108989959A (en) * | 2018-08-09 | 2018-12-11 | 京东方科技集团股份有限公司 | Electret microphone and its manufacturing method, display device |
| CN108989959B (en) * | 2018-08-09 | 2020-11-10 | 京东方科技集团股份有限公司 | Electret microphone, manufacturing method thereof and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1933679B (en) | 2011-04-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Address after: 261200 Weifang, Shandong Province Feng Shan Road, No. 68, Fangzi Patentee after: Gongda Electroacoustics Co., Ltd. Address before: 261200 No. 69, Longquan street, Fangzi District, Shandong, Weifang Patentee before: Shandong Gettop Acoustic Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20200930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |