WO2008029514A1 - Microphone capteur de vibrations - Google Patents

Microphone capteur de vibrations Download PDF

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Publication number
WO2008029514A1
WO2008029514A1 PCT/JP2007/000966 JP2007000966W WO2008029514A1 WO 2008029514 A1 WO2008029514 A1 WO 2008029514A1 JP 2007000966 W JP2007000966 W JP 2007000966W WO 2008029514 A1 WO2008029514 A1 WO 2008029514A1
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
case
diaphragm
sub
vibration
Prior art date
Application number
PCT/JP2007/000966
Other languages
English (en)
Japanese (ja)
Inventor
Mikio Fukuda
Original Assignee
Temco Japan 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 Temco Japan Co., Ltd. filed Critical Temco Japan Co., Ltd.
Priority to JP2008533041A priority Critical patent/JPWO2008029514A1/ja
Publication of WO2008029514A1 publication Critical patent/WO2008029514A1/fr

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Definitions

  • the present invention relates to a vibration pickup microphone, and more particularly to a vibration pickup microphone of a type that picks up bone vibration and vocal cord vibration.
  • Bone conduction microphones and throat microphones are microphones that are difficult to detect external noise and pick up only the voice of the speaker.
  • an acceleration pickup type microphone using a piezoelectric element and supporting it by a support portion as shown in FIG.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2 026 _ 2 0 2 4 7
  • Patent Document 2 Japanese Patent Laid-Open No. 2 0 0 4 _ 2 2 9 1 4 7
  • Patent Document 3 Japanese Patent Laid-Open No. 2 0 0 1 _ 2 9 2 4 8 9
  • Patent Document 4 Japanese Patent Laid-Open No. 2 00 0 _ 2 0 1 8 7 5 Disclosure of the invention
  • the present invention has been made in view of the disadvantages of the conventional microphone mouthphone that is intended to pick up only the voice of the speaker as described above.
  • the challenge is to provide a small and highly sensitive vibration pick-up microphone that makes it difficult to detect external noise and vibration as an input microphone.
  • the invention according to claim 1 for solving the above-mentioned problem is that an elastic material that covers the entire outer surface including a case having an upper surface that accommodates a microphone unit and an upper end surface of the case is provided.
  • An air chamber is formed between the sub diaphragm and the microphone unit, and the upper surface of the sub diaphragm is the same as the upper end surface of the case. It is characterized in that it is done or a little protruding from it.
  • the case may have a double structure of an outer case and an inner case housed in the outer case via an elastic spacer.
  • the microphone holder is provided with a support frame that fits into the sub diaphragm and supports the sub diaphragm on an upper surface, and the sub diaphragm contacts the lower surface of the case at the lower end.
  • the sub diaphragm is in a spherical shape on the upper surface.
  • the present invention is as described above, and the microphone unit is hermetically sealed in a housing composed of a case and a cover when in use, so that the microphone unit is not easily affected by external noise, and thus has a high My for voice calls and voice recognition input As a crophone, there is an effect of obtaining a small and highly sensitive vibration pickup microphone that is difficult to detect external noise and vibration.
  • a vibration pickup microphone includes a case 2 for housing a microphone unit 1, a cover 3 for covering the case, a microphone holder 4 for supporting the microphone mouthphone unit 1 in the case 2, and a microphone holder. It consists of the sub diaphragm 5 loaded in the case 2 so as to cover the part 4.
  • Case 2 is a container having an open top surface, and is typically made of a high specific gravity material such as brass, stainless steel, or iron, and has a hole 7 for drawing out lead wire 6 coming out of microphone unit 1 at the bottom of the side wall. Is formed.
  • the cover 3 is made of an elastic material such as a silicon rubber, and covers the entire outer surface including the upper end surface of the case 2.
  • the upper end of the cover 3 is extended inward so as to cover the upper end surface of the case 2, thereby forming an annular skin contact portion 8.
  • a hole 9 is also formed in the cover 3 at a position corresponding to the hole 7 of the case 2, and the lead wire 6 is drawn out therefrom.
  • the microphone holder 4 is also made of an elastic material such as a silicon rubber, and is closely fitted in the case 2.
  • the microphone holder 14 has a peripheral leg 10 that is in close contact with the inner surface of the case 2, and a holding opening 11 for holding the microphone unit 1 is formed at the center of the upper surface.
  • a support frame 12 that supports the sub diaphragm 5 by being fitted into the sub diaphragm 5 is formed on the upper surface thereof.
  • the sub diaphragm 5 has, for example, a spherical upper surface and a flange 13 at the lower end.
  • the flanges 13 serve to separate the outer surface of the sub diaphragm 5 from the inner surface of the case 2 by contacting the inner surface of the case 2.
  • the sub diaphragm 5 is firmly loaded in the case 2 by being fitted to the support frame 12 of the microphone holder 4, and the air chamber 14 is secured inside thereof.
  • the upper surface of the sub diaphragm 5 is designed to be the same height as the skin contact portion 8 of the cover 3 or to protrude slightly more.
  • the upper surface of the sub diaphragm 5 is the same as or larger than the upper end surface of the case 2, the upper surface of the sub diaphragm 5 is in close contact with the skin. At the same time, the skin contact portion 8 also comes into close contact with the skin. However, the skin contact portion 8 is not thick enough to inhibit the close contact with the sub diaphragm 5, and the skin is elastic, so the sub diaphragm 5 fully adheres to the skin.
  • the vibration pickup microphone is extremely resistant to vibration and external noise.
  • the housing part is composed of a case 2 and a cover 3, and the case 2 is made of high specific gravity material such as brass, stainless steel or iron for the purpose of reducing the sensitivity to sound pressure (air vibration). Formed.
  • the cover 3 by using an elastic material for the cover 3, airtightness between the skin and the skin contact portion 8 in contact with the skin can be ensured, thereby preventing the entry of external sound. it can.
  • the microphone holder 4 made of an elastic material, a configuration in which unnecessary vibrations are less likely to be detected can be achieved.
  • the case 2 has a double structure consisting of an outer case 15 and an inner case 16, and the configuration other than that is the same as the above embodiment.
  • the inner case 16 is accommodated in the outer case 15 via the spacer 17 made of elastic material, and the buffer space 18 is held between the inner and outer cases 15 and 16. .
  • this structure In the case of this embodiment, since the buffer space 18 exists, the transmission of external sound to the microphone port unit 1 is more reliably prevented. Therefore, this structure In the case of construction, it can be fully used even under noise of 1 2 0 d BSPL or more.
  • FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.
  • FIG. 2 is a use state diagram of an embodiment of the present invention.
  • FIG. 3 is a longitudinal sectional view of another embodiment of the present invention.
  • FIG. 4 is a longitudinal sectional view showing a configuration example of a conventional bone conduction microphone mouthphone.
  • FIG. 5 is a longitudinal sectional view of a conventional dynamic type microphone.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

L'invention concerne un petit microphone capteur de vibrations de haute sensibilité, utilisable pour des conversations menées dans un environnement très bruyant, ou comme un dispositif d'entrée pour la reconnaissance vocale insensible aux bruits extérieurs ou aux vibrations. Le microphone capteur de vibrations comprend: un boîtier (2) présentant une surface supérieure destinée à contenir une unité de microphone (1); un couvercle (3) en matière élastique qui recouvre entièrement la surface extérieure comprenant la face d'extrémité supérieure du boîtier (2); un support de microphone (4) en matière élastique disposé dans le boîtier (2) pour retenir l'unité de microphone (1) dans un état flottant; et un sous-diaphragme (5) disposé dans le boîtier (2) pour recouvrir le support de microphone (4), qui se caractérise en ce qu'une chambre à air (14) est formée entre le sous-diaphragme (5) et l'unité de microphone (1) et que la surface supérieure du sous-diaphragme (5) affleure la face d'extrémité supérieure du boîtier (2) ou le déborde légèrement.
PCT/JP2007/000966 2006-09-07 2007-09-06 Microphone capteur de vibrations WO2008029514A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008533041A JPWO2008029514A1 (ja) 2006-09-07 2007-09-06 振動ピックアップマイクロホン

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006242992 2006-09-07
JP2006-242992 2006-09-07

Publications (1)

Publication Number Publication Date
WO2008029514A1 true WO2008029514A1 (fr) 2008-03-13

Family

ID=39156960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/000966 WO2008029514A1 (fr) 2006-09-07 2007-09-06 Microphone capteur de vibrations

Country Status (2)

Country Link
JP (1) JPWO2008029514A1 (fr)
WO (1) WO2008029514A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100290660A1 (en) * 2008-02-08 2010-11-18 Temco Japan Co., Ltd. Vibration pickup microphone
WO2018040716A1 (fr) * 2016-08-29 2018-03-08 深圳市本军科技有限公司 Écouteurs à conduction osseuse et lunettes les comprenant
WO2021128351A1 (fr) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Capteur de conduction osseuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127491U (fr) * 1979-02-28 1980-09-09
JPS6387983U (fr) * 1986-11-26 1988-06-08
JPH1196959A (ja) * 1997-09-17 1999-04-09 Hitachi Ltd 超精密処理装置
JP2001309473A (ja) * 2000-04-26 2001-11-02 Yoshio Kitamura 防水型振動マイクロホン

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259174A (en) * 1979-03-19 1981-03-31 Mobil Oil Corporation Catalytic dewaxing of hydrocarbon oils
IT1196484B (it) * 1986-07-11 1988-11-16 Sclavo Spa Vettore ad espressione e secrezione in lieviti,utile per la preparazione di proteine eterologhe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127491U (fr) * 1979-02-28 1980-09-09
JPS6387983U (fr) * 1986-11-26 1988-06-08
JPH1196959A (ja) * 1997-09-17 1999-04-09 Hitachi Ltd 超精密処理装置
JP2001309473A (ja) * 2000-04-26 2001-11-02 Yoshio Kitamura 防水型振動マイクロホン

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100290660A1 (en) * 2008-02-08 2010-11-18 Temco Japan Co., Ltd. Vibration pickup microphone
WO2018040716A1 (fr) * 2016-08-29 2018-03-08 深圳市本军科技有限公司 Écouteurs à conduction osseuse et lunettes les comprenant
WO2021128351A1 (fr) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Capteur de conduction osseuse

Also Published As

Publication number Publication date
JPWO2008029514A1 (ja) 2010-01-21

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