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WO2009005211A1 - Membrane ayant une gorge d'air et microphone à condensateur utilisant celle-ci - Google Patents

Membrane ayant une gorge d'air et microphone à condensateur utilisant celle-ci Download PDF

Info

Publication number
WO2009005211A1
WO2009005211A1 PCT/KR2008/001860 KR2008001860W WO2009005211A1 WO 2009005211 A1 WO2009005211 A1 WO 2009005211A1 KR 2008001860 W KR2008001860 W KR 2008001860W WO 2009005211 A1 WO2009005211 A1 WO 2009005211A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
case
backplate
sound hole
diaphragm 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.)
Ceased
Application number
PCT/KR2008/001860
Other languages
English (en)
Inventor
Jong-Sub Lee
Kyoung-Ku Han
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSE Co Ltd
Original Assignee
BSE Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BSE Co Ltd filed Critical BSE Co Ltd
Publication of WO2009005211A1 publication Critical patent/WO2009005211A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to a condenser microphone, and more particularly, to a condenser microphone with a diaphragm plate having an air groove.
  • Condenser microphones are widely used in mobile communication terminals and audio equipment.
  • a typical condenser microphone includes a voltage bias element, a diaphragm/backplate pair configured to form a capacitor (C) varying with a sound pressure, and a junction field effect transistor (JFET) configured to buffer an output signal.
  • Such a typical condenser microphone is fabricated by assembling a diaphragm plate, a spacer ring, an insulating ring, a backplate, a conductive ring, and a printed circuit board (PCB) within a case, and curling an edge portion of the case.
  • PCB printed circuit board
  • FIG. 1 is a cross-sectional view illustrating a condenser microphone assembly according to a related art.
  • the related art microphone assembly has a structure that a diaphragm plate 12 including a diaphragm and a polar ring, a spacer 13, a backplate 14, an insulating base 15, a conductive base 16 are inserted into a case 11, and finally a printed circuit board (PCB) 17 is mounted to the case 11 and an edge portion of the case 11 is curled.
  • PCB printed circuit board
  • a sound hole 1 Ia is disposed in a middle portion of a bottom of the case 11 to introduce an external sound.
  • An air groove 1 Ib, connecting the middle portion of the bottom to a surrounding portion thereof, is radially disposed to provide an air passage when the case 11 comes in close contact with the diaphragm plate 12.
  • a condenser microphone which includes a mesh provided to a sound hole in a case, to prevent a foreign material from being introduced through the sound hole for introducing external sound.
  • An object of the present invention is to provide a condenser microphone with a diaphragm plate having an air groove for allowing an air flow.
  • Technical Solution [8] To achieve the objects of the present invention, there is provided a diaphragm plate including: a diaphragm vibrated by a sound pressure introduced through a sound hole; a polar ring to which the diaphragm is attached including an air hole and forming a space allowing the diaphragm to vibrate, the air hole allowing an air flow between an inner side and an outer side of the ring.
  • a condenser microphone including: a container-shaped case having an open side and a mesh sound hole disposed in a middle portion of a bottom; a diaphragm plate including a polar ring and a diaphragm, the polar ring including an air groove for providing an air flow for the mesh sound hole in the middle portion when being in close contact with the case, the diaphragm being vibrated by a sound pressure introduced through the mesh sound hole; a backplate including a sound hole; a spacer for forming a space between the diaphragm plate and the backplate; an insulating base for electrically insulating the backplate from the case; a conductive base electrically insulated from the case through the insulating base; and a printed circuit board (PCB) on which a connection terminal and a circuit part are mounted, the PCB electrically connected to the backplate through the conductive base and connected to the diaphragm plate through the case.
  • PCB printed circuit board
  • an air passage is provided through an air hole disposed in a diaphragm plate, so that the diaphragm in equilibrium provides a favorable sound quality.
  • FIG. 1 is a cross-sectional view illustrating a condenser microphone assembly according to a related art.
  • FIG. 2 is a view illustrating a diaphragm plate including an air groove according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view illustrating a condenser microphone assembly according to an embodiment of the present invention.
  • FIG. 2 is a view illustrating a diaphragm plate including an air groove according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view illustrating a condenser microphone assembly according to an embodiment of the present invention.
  • a diaphragm plate 120 includes a diaphragm 122 and a polar ring
  • the diaphragm 122 is vibrated by an external sound pressure.
  • the polar ring 124 includes an air groove 124a on both sides thereof to allows an air flow with a sound hole 110a disposed in a middle portion of a bottom of the case 110.
  • a condenser microphone assembly with the diaphragm plate 120 including the air groove 124a includes a container-shaped case 110, the diaphragm plate 120, a spacer 130, a backplate 140, an insulating base 150, a PCB 170, and a conductive base 160.
  • the case 110 provides a mesh to the sound hole 110a.
  • the diaphragm plate 120 provides an air passage for the sound hole 110a in the middle portion and allows the diaphragm 122 to be vibrated by an external pressure when the polar ring 124 including the air groove 124a comes in close contact with the case 110.
  • the spacer 130 forms a space between the diaphragm plate 120 and the backplate 140.
  • the backplate 140 includes a sound hole 140a.
  • the insulating base 150 electrically insulates the backplate 140 from the case 110.
  • the conductive base 160 is electrically insulated from the case 110 by the insulating base 150, but electrically connects the backplate 140 to the PCB 170. Connection terminals and circuit parts are mounted on the PCB 170.
  • the case 110 is a metal cylindrical or tetragonal container thinner than a related art, to provide the mesh to the sound hole 110a. A side of the case 110 is opened, and the mesh sound hole 110a for introducing an external sound is disposed in the middle portion of the bottom.
  • the diaphragm plate 120 includes the diaphragm 122 and the polar ring 124.
  • the diaphragm 122 is vibrated by a sound pressure introduced through the mesh sound hole 110a.
  • the polar ring 124 to which the diaphragm 122 is attached, includes the air groove 124a.
  • the air groove 124a allows an air flow between the middle portion of the bottom of the case 110 and a surrounding portion.
  • the polar ring 124 forms the space between the case 110 and the diaphragm 122 to allow the diaphragm 122 to vibrate.
  • the diaphragm 122 functioning as a movable electrode is connected to an electric circuit of the PCB 170 through a conductive path formed by the polar ring 124 and the case 110, and the backplate 140 functioning as a fixed electrode is connected to the electric circuit of the PCB 170 through the conductive base 160.
  • the diaphragm 122 vibrates to cause variations in a distance between the diaphragm 122 functioning as a movable electrode and the backplate 140 functioning as a fixed electrode. Accordingly, a capacitance varies between the fixed electrode and the movable electrode.
  • the variations in the capacitance are signal-processed by a semiconductor device mounted on the PCB 170 and transmitted to the outside through the connection terminals.
  • a back chamber as a space behind the diaphragm 122 is connected to the air passage reaching the mesh sound hole 110a through the conductive base 160, the insulating base 150, and the air groove 124a in the polar ring 124. Accordingly, air pressure in both spaces separated by the diaphragm 122 is in equilibrium to provide a favorable sound quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Multimedia (AREA)

Abstract

L'invention concerne un microphone à condensateur ayant une membrane plate avec une gorge d'air. Le microphone à condensateur comprend un boîtier en forme de conteneur ayant un côté ouvert et un trou acoustique à mailles disposé dans une partie médiane d'une partie inférieure, une plaque de membrane comprenant un anneau polaire et une membrane, l'anneau polaire comprenant une gorge d'air pour transmettre un écoulement d'air pour le trou acoustique à mailles situé dans la partie médiane lorsqu'il est en contact étroit avec le boîtier, la membrane étant mise à vibrer par une pression sonore introduite à travers le trou acoustique à mailles, une plaque arrière comprenant un trou acoustique, une pièce d'écartement pour former un espace entre la plaque de membrane et la plaque arrière, une base isolante pour isoler électriquement la plaque arrière du boîtier, une base conductrice électriquement isolée du boîtier par l'intermédiaire de la base isolante, et une carte à circuit imprimé (PCB) sur laquelle une borne de connexion et une partie de circuit sont montées, la PCB étant raccordée électriquement à la plaque arrière par l'intermédiaire de la base conductrice et raccordée à la plaque de membrane à travers le boîtier.
PCT/KR2008/001860 2007-07-03 2008-04-03 Membrane ayant une gorge d'air et microphone à condensateur utilisant celle-ci Ceased WO2009005211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2007-0010932 2007-07-03
KR2020070010932U KR20090000180U (ko) 2007-07-03 2007-07-03 에어 홈이 형성된 진동판 및 이를 이용한 콘덴서마이크로폰

Publications (1)

Publication Number Publication Date
WO2009005211A1 true WO2009005211A1 (fr) 2009-01-08

Family

ID=40226220

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/001860 Ceased WO2009005211A1 (fr) 2007-07-03 2008-04-03 Membrane ayant une gorge d'air et microphone à condensateur utilisant celle-ci

Country Status (3)

Country Link
KR (1) KR20090000180U (fr)
CN (1) CN201197187Y (fr)
WO (1) WO2009005211A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517184A (ja) * 2009-11-18 2012-07-26 ビーエスイー カンパニー リミテッド Ｍｅｍｓマイクロホンパッケージ及びパッケージング方法
EP2477514B1 (fr) 2009-09-18 2016-09-21 Smart Chip Microelectronic Co., Ltd. Appareil à fumer électronique
CN106976837A (zh) * 2017-04-24 2017-07-25 广东美的制冷设备有限公司 微型加热器及其加工方法
US10420374B2 (en) 2009-09-18 2019-09-24 Altria Client Services Llc Electronic smoke apparatus
CN111449296A (zh) * 2020-04-22 2020-07-28 深圳市湃科集成技术有限公司 一种电容式气流传感器及电子烟
CN111954138A (zh) * 2020-08-19 2020-11-17 苏州礼乐乐器股份有限公司 一种带音梁及音隧的全频段硅麦

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4893860B1 (ja) * 2011-02-21 2012-03-07 オムロン株式会社 マイクロフォン
CN104125530A (zh) * 2014-06-20 2014-10-29 宁波兴隆电子有限公司 一种高信噪比曲线双跌传声器
KR101947094B1 (ko) 2017-03-16 2019-02-12 소스트 주식회사 요철구조체 진동판을 갖는 멤스 마이크로폰
CN109223029B (zh) * 2018-09-30 2024-11-01 邱晓龙 一种穿戴式心肺检测仪的声音采集装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281222A (en) * 1978-09-30 1981-07-28 Hosiden Electronics Co., Ltd. Miniaturized unidirectional electret microphone
JPS61219298A (ja) * 1985-03-26 1986-09-29 Matsushita Electric Ind Co Ltd エレクトレツトコンデンサマイクロホン
JP2004320144A (ja) * 2003-04-11 2004-11-11 Rion Co Ltd コンデンサマイクロホン
KR20060119278A (ko) * 2005-05-19 2006-11-24 이승택 내부 공기배출 시스템을 포함하는 콘덴서마이크로폰

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281222A (en) * 1978-09-30 1981-07-28 Hosiden Electronics Co., Ltd. Miniaturized unidirectional electret microphone
JPS61219298A (ja) * 1985-03-26 1986-09-29 Matsushita Electric Ind Co Ltd エレクトレツトコンデンサマイクロホン
JP2004320144A (ja) * 2003-04-11 2004-11-11 Rion Co Ltd コンデンサマイクロホン
KR20060119278A (ko) * 2005-05-19 2006-11-24 이승택 내부 공기배출 시스템을 포함하는 콘덴서마이크로폰

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2477514B1 (fr) 2009-09-18 2016-09-21 Smart Chip Microelectronic Co., Ltd. Appareil à fumer électronique
US10420374B2 (en) 2009-09-18 2019-09-24 Altria Client Services Llc Electronic smoke apparatus
EP2477514B2 (fr) † 2009-09-18 2021-12-29 Altria Client Services LLC Appareil à fumer électronique
US11974610B2 (en) 2009-09-18 2024-05-07 Altria Client Services Llc Electronic smoke apparatus
US12471637B2 (en) 2009-09-18 2025-11-18 Altria Client Services Llc Electronic smoke apparatus
JP2012517184A (ja) * 2009-11-18 2012-07-26 ビーエスイー カンパニー リミテッド Ｍｅｍｓマイクロホンパッケージ及びパッケージング方法
CN106976837A (zh) * 2017-04-24 2017-07-25 广东美的制冷设备有限公司 微型加热器及其加工方法
CN111449296A (zh) * 2020-04-22 2020-07-28 深圳市湃科集成技术有限公司 一种电容式气流传感器及电子烟
CN111954138A (zh) * 2020-08-19 2020-11-17 苏州礼乐乐器股份有限公司 一种带音梁及音隧的全频段硅麦

Also Published As

Publication number Publication date
CN201197187Y (zh) 2009-02-18
KR20090000180U (ko) 2009-01-08

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