EP0457474A3 - Acoustic diaphragm and method for producing same - Google Patents

Acoustic diaphragm and method for producing same Download PDF

Info

Publication number: EP0457474A3
Authority: EP; European Patent Office
Prior art keywords: producing same; acoustic diaphragm; diaphragm; acoustic; producing
Prior art date: 1990-05-18
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

Application number

EP19910304093

Other versions

EP0457474B1 (en

EP0457474A2 (en

Inventor

Masaru Uryu

Noboru Kurihara

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.)

Ajinomoto Co Inc

Sony Corp

Original Assignee

Ajinomoto Co Inc

Sony Corp

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.)

1990-05-18

Filing date

1991-05-07

Publication date

1992-09-16

1991-05-07 Application filed by Ajinomoto Co Inc, Sony Corp filed Critical Ajinomoto Co Inc

1991-11-21 Publication of EP0457474A2 publication Critical patent/EP0457474A2/en

1992-09-16 Publication of EP0457474A3 publication Critical patent/EP0457474A3/en

1995-07-19 Application granted granted Critical

1995-07-19 Publication of EP0457474B1 publication Critical patent/EP0457474B1/en

2011-05-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Manufacturing & Machinery (AREA)
Diaphragms For Electromechanical Transducers (AREA)

EP91304093A 1990-05-18 1991-05-07 Method of producing an acoustic diaphragm Expired - Lifetime EP0457474B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2126819A JP2953743B2 (en)	1990-05-18	1990-05-18	Acoustic diaphragm and manufacturing method thereof
JP126819/90		1990-05-18

Publications (3)

Publication Number	Publication Date
EP0457474A2 EP0457474A2 (en)	1991-11-21
EP0457474A3 true EP0457474A3 (en)	1992-09-16
EP0457474B1 EP0457474B1 (en)	1995-07-19

Family

ID=14944735

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91304093A Expired - Lifetime EP0457474B1 (en)	1990-05-18	1991-05-07	Method of producing an acoustic diaphragm

Country Status (4)

Country	Link
EP (1)	EP0457474B1 (en)
JP (1)	JP2953743B2 (en)
KR (1)	KR100230673B1 (en)
DE (1)	DE69111297T2 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2719261B2 (en) *	1992-01-31	1998-02-25	シャープ株式会社	Speaker diaphragm
EP0610001B1 (en) *	1993-01-29	2001-09-26	Sony Corporation	Loudspeaker
DE69431177T2 (en) *	1993-09-22	2003-05-08	Sony Corp., Tokio/Tokyo	A horn speaker system
TW354866B (en) *	1994-03-31	1999-03-21	Matsushita Electric Ind Co Ltd	Loudspeaker and a method for producing the same
JP2005096844A (en) *	2003-08-27	2005-04-14	Showa Marutsutsu Co Ltd	Compact
JP2007088879A (en) *	2005-09-22	2007-04-05	Pioneer Electronic Corp	Diaphragm for speaker
JP2007235521A (en) *	2006-03-01	2007-09-13	Matsushita Electric Ind Co Ltd	Production facility for paper diaphragm for speaker, paper diaphragm for speaker manufactured by the production facility, and speaker
JP4742940B2 (en) *	2006-03-29	2011-08-10	パナソニック株式会社	Speaker papermaking part manufacturing method, speaker papermaking part manufactured by this manufacturing method, and speaker
JP4742941B2 (en) *	2006-03-29	2011-08-10	パナソニック株式会社	Speaker papermaking parts production equipment, speaker papermaking parts produced by this production equipment, and speakers
US8343313B2 (en)	2006-03-01	2013-01-01	Panasonic Corporation	Plant for production of paper-made part for speaker, paper-made part for speaker produced thereby, and speaker utilizing the same
WO2007099865A1 (en)	2006-03-01	2007-09-07	Matsushita Electric Industrial Co., Ltd.	Method for manufacturing component for speaker by papermaking, copmponent for speaker by papermaking, vibrating plate for speaker, subcone for speaker, dust cap for speaker, and speaker
JP2008124962A (en) *	2006-11-15	2008-05-29	Matsushita Electric Ind Co Ltd	Paper diaphragm for speakers, speaker using the diaphragm, electronic equipment and apparatus using the speaker
JP4765904B2 (en) *	2006-11-15	2011-09-07	パナソニック株式会社	Papermaking diaphragm for speaker, speaker using the same, and electronic device and apparatus using the speaker
WO2008084641A1 (en)	2006-12-22	2008-07-17	Panasonic Corporation	Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker
JP4858156B2 (en) *	2006-12-22	2012-01-18	パナソニック株式会社	Speaker frame, speaker using the same, electronic device, and moving device
JP4793255B2 (en) *	2006-12-26	2011-10-12	パナソニック株式会社	Speaker diaphragm, speaker using the same, and electronic device and apparatus using the speaker
JP4765927B2 (en) *	2006-12-22	2011-09-07	パナソニック株式会社	DUST CAP FOR SPEAKER, SPEAKER USING THE SAME, AND ELECTRONIC DEVICE AND DEVICE USING THE SPEAKER
JP2008160362A (en) *	2006-12-22	2008-07-10	Matsushita Electric Ind Co Ltd	Dust cap for loudspeaker, loudspeaker using it and electronic equipment and device using its loudspeaker
JP5018344B2 (en) *	2007-08-29	2012-09-05	パナソニック株式会社	Resin frame for speaker and speaker using the same
JP5470761B2 (en) *	2008-07-07	2014-04-16	パナソニック株式会社	Speaker diaphragm, speaker using the same, electronic device and apparatus using the speaker, and method for manufacturing the speaker diaphragm
TWI408232B (en)	2010-05-24	2013-09-11	Nympheas Internationalcorp	Bacterial cellulose film, and use thereof
JP5240308B2 (en) *	2011-02-23	2013-07-17	パナソニック株式会社	Speaker diaphragm, speaker using the same, and electronic device and apparatus using the speaker
JP5333484B2 (en) *	2011-03-03	2013-11-06	パナソニック株式会社	Speaker frame, speaker using the same, electronic device, and moving device
JP2011142671A (en) *	2011-03-16	2011-07-21	Panasonic Corp	Loudspeaker diaphragm, loudspeaker employing the same, and electronic equipment and apparatus employing the loudspeaker
JP2013226675A (en) *	2012-04-24	2013-11-07	Yamaha Corp	Sheet for press forming and method for producing formed body
JP6584784B2 (en) *	2015-02-09	2019-10-02	フォスター電機株式会社	Method for manufacturing diaphragm for electroacoustic transducer
FR3035611B1 (en) *	2015-04-28	2019-08-09	Centre Technique Du Papier	METHOD AND DEVICE FOR MANUFACTURING LAMINATED MATERIAL COMPRISING A FIBRILED CELLULOSE LAYER
CN109863761B (en) *	2016-10-28	2020-12-01	索尼公司	Electroacoustic transducer and electroacoustic transducer device
CN111918178B (en) *	2020-07-29	2021-12-10	国光电器股份有限公司	Preparation method of carbon fiber cone for loudspeaker
KR102410339B1 (en) *	2020-12-28	2022-06-22	범진시엔엘 주식회사	Method for manufacturing diaphragm of speaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0200409A2 (en) *	1985-04-16	1986-11-05	Agency Of Industrial Science And Technology	Moulded material comprising bacteria-produced cellulose

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS59144299A (en) *	1983-02-07	1984-08-18	Dainichi Nippon Cables Ltd	Diaphragm material for acoustics
JPH0736636B2 (en) *	1985-06-07	1995-04-19	工業技術院長	Acoustic diaphragm

1990
- 1990-05-18 JP JP2126819A patent/JP2953743B2/en not_active Expired - Fee Related
1991
- 1991-05-07 EP EP91304093A patent/EP0457474B1/en not_active Expired - Lifetime
- 1991-05-07 DE DE69111297T patent/DE69111297T2/en not_active Expired - Fee Related
- 1991-05-16 KR KR1019910007921A patent/KR100230673B1/en not_active IP Right Cessation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0200409A2 (en) *	1985-04-16	1986-11-05	Agency Of Industrial Science And Technology	Moulded material comprising bacteria-produced cellulose

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 145 (E-505)12 December 1986 & JP-A-61 281 800 ( AGENCY FO IND SCIENCE & TECHNOLOGY ) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 277 (E-285)18 August 1984 & JP-A-59 144 299 ( DAINICHI NIPPON DENSEN KK ) *

Also Published As

Publication number	Publication date
JPH0423597A (en)	1992-01-27
DE69111297D1 (en)	1995-08-24
EP0457474B1 (en)	1995-07-19
DE69111297T2 (en)	1996-01-11
KR100230673B1 (en)	1999-11-15
KR910021175A (en)	1991-12-20
JP2953743B2 (en)	1999-09-27
EP0457474A2 (en)	1991-11-21

Publication	Publication Date	Title
EP0457474A3 (en)	1992-09-16	Acoustic diaphragm and method for producing same
US5647013C1 (en)	2001-05-08	Electroacoustic transducer
GB2272819B (en)	1996-07-03	Electroacoustic transducer
GB2305092B (en)	1999-10-27	Method to simulate the acoustical quality of a room and associated audio-digital processor
GB2220819B (en)	1992-07-22	Electroacoustic transducer
HK1007375A1 (en)	1999-04-09	Electroacoustic transducer apparatus
EP0445382A3 (en)	1991-12-04	Pressure transducer and its manufacturing method
EP0255509A3 (en)	1990-03-21	Loudspeaker front and method of producing the same
GB9014251D0 (en)	1990-08-15	Method for monitoring acoustic emissions
GB9107549D0 (en)	1991-05-29	Diaphragm for speaker
GB2050758B (en)	1983-07-20	Acoustic diaphragm for speakers and method of producing the same
HK1011138A1 (en)	1999-07-02	Electroacoustic transducer and method of fabricating the same
HK1000811A1 (en)	1998-05-01	Magnetoelectric transducer and process for producing the same
HK1011137A1 (en)	1999-07-02	Electroacoustic transducer
EP0512764A3 (en)	1993-06-09	Method for producing electret filter
HK1010417A1 (en)	1999-06-17	Acoustic signal producing apparatus
EP0457211A3 (en)	1992-12-23	Piezoelectric sound generator and process for its manufacture
HUT58877A (en)	1992-03-30	Ball-duct and method for producing the ball-deflecting structures of this ball-duct
HUT62316A (en)	1993-04-28	Process for producing aids vaccine and for diagnosing aids
GB9225650D0 (en)	1993-01-27	An electroacoustic transducer
GB2348774B (en)	2001-02-21	Electro-acoustic transducers
HUT60378A (en)	1992-08-28	Holding plate and method for producing same
AU7345291A (en)	1991-10-10	Wad mat and method for producing the same
GB9113160D0 (en)	1991-08-07	Voice transducer
EP0468524A3 (en)	1993-01-27	Method of manufacturing acoustic diaphragm

Legal Events

Date	Code	Title	Description
1991-10-04	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-11-21	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB
1992-07-28	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-09-16	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB
1993-04-21	17P	Request for examination filed	Effective date: 19930222
1994-03-30	17Q	First examination report despatched	Effective date: 19940214
1995-06-02	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-07-19	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB
1995-08-24	REF	Corresponds to:	Ref document number: 69111297 Country of ref document: DE Date of ref document: 19950824
1995-10-27	ET	Fr: translation filed
1996-05-24	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-05-24	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-07-10	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2009-08-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20090429 Year of fee payment: 19 Ref country code: FR Payment date: 20090515 Year of fee payment: 19
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2011-01-26	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20100507
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2011-04-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101201
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