EP0814637A3 - Method for producing a diaphragm for an electroacoustic transducer - Google Patents

Method for producing a diaphragm for an electroacoustic transducer Download PDF

Info

Publication number
EP0814637A3
EP0814637A3 EP97890105A EP97890105A EP0814637A3 EP 0814637 A3 EP0814637 A3 EP 0814637A3 EP 97890105 A EP97890105 A EP 97890105A EP 97890105 A EP97890105 A EP 97890105A EP 0814637 A3 EP0814637 A3 EP 0814637A3
Authority
EP
European Patent Office
Prior art keywords
membrane
thickness
diaphragm
producing
reduced
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
Application number
EP97890105A
Other languages
German (de)
French (fr)
Other versions
EP0814637A2 (en
EP0814637B1 (en
Inventor
Gino Dipl.Ing. Pavlovic
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Priority to AT97890105T priority Critical patent/ATE309686T1/en
Publication of EP0814637A2 publication Critical patent/EP0814637A2/en
Publication of EP0814637A3 publication Critical patent/EP0814637A3/en
Application granted granted Critical
Publication of EP0814637B1 publication Critical patent/EP0814637B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49005—Acoustic transducer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/4908—Acoustic transducer

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

The membrane manufacture procedure provides areas of reduced thickness in a deformable thermoplastics material of constant thickness by clamping the inner areas (8) which are to remain at the initial thickness and the periphery of the membrane via respective fixing devices (6,6'; 7,7'). The intermediate parts (9) of the membrane are reduced in thickness by applied tensile force and heat. The obtained membrane is then positioned in a stamping mould for providing a shaped membrane with a raised central area, enclosed by an annular raised area and a flat peripheral lip.
EP97890105A 1996-06-19 1997-06-18 Method for producing a diaphragm for an electroacoustic transducer Expired - Lifetime EP0814637B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT97890105T ATE309686T1 (en) 1996-06-19 1997-06-18 METHOD FOR PRODUCING A MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT108596 1996-06-19
AT1085/96 1996-06-19
AT0108596A AT403751B (en) 1996-06-19 1996-06-19 METHOD FOR PRODUCING A MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER

Publications (3)

Publication Number Publication Date
EP0814637A2 EP0814637A2 (en) 1997-12-29
EP0814637A3 true EP0814637A3 (en) 2004-09-15
EP0814637B1 EP0814637B1 (en) 2005-11-09

Family

ID=3506264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97890105A Expired - Lifetime EP0814637B1 (en) 1996-06-19 1997-06-18 Method for producing a diaphragm for an electroacoustic transducer

Country Status (6)

Country Link
US (1) US6185809B1 (en)
EP (1) EP0814637B1 (en)
JP (1) JP3927651B2 (en)
AT (2) AT403751B (en)
DE (1) DE59712472D1 (en)
DK (1) DK0814637T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3597061B2 (en) * 1998-11-13 2004-12-02 日本電気株式会社 Piezo speaker
KR100338785B1 (en) * 1999-05-28 2002-05-31 허 훈 Manufacturing Method of Diaphragm for Dynamic Receiver of Cellular Phone
JP4557412B2 (en) 2000-11-20 2010-10-06 パナソニック株式会社 Speaker
ATE315880T1 (en) * 2003-09-11 2006-02-15 Akg Acoustics Gmbh DYNAMIC ELECTROACOUSTIC TRANSDUCER, ESPECIALLY SMALL SPEAKER
WO2005084076A1 (en) 2004-02-17 2005-09-09 Koninklijke Philips Electronics N.V. Method of and device for modifying the properties of a membrane for an electroacoustic transducer
EP1694094A1 (en) 2005-02-18 2006-08-23 AKG Acoustics GmbH Membrane for a dynamic converter
US20070261912A1 (en) * 2006-05-11 2007-11-15 Altec Lansing Technologies, Inc. Integrated audio speaker surround
CN102868959B (en) * 2012-10-12 2015-01-21 张百良 Aluminium strip speaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277023A (en) * 1968-08-27 1972-06-07 Emi Ltd Improvements in or relating to diaphragms
DE2238831A1 (en) * 1971-08-11 1973-02-22 Shell Int Research THERMOPLASTIC HOLLOW SHAPED PART AND PROCESS FOR ITS MANUFACTURING

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219918A (en) * 1968-08-08 1971-01-20 Standard Telephones Cables Ltd Improvements in and relating to moving coil transducers
US3586792A (en) * 1970-02-24 1971-06-22 Int Standard Electric Corp Method for assembling electro-acoustical transducer diaphragm assemblies
JPS53119023A (en) * 1977-03-26 1978-10-18 Kenzou Inoue Moving coil type sound converting vibration plate
JPS555168A (en) * 1978-06-27 1980-01-16 Matsushita Electric Ind Co Ltd Production of diaphragm for speaker
GB2062405B (en) * 1979-10-20 1983-07-20 Plessey Co Ltd Acoustic transducer production for telephones
US5033093A (en) 1990-01-17 1991-07-16 Peavey Electronics Corporation Compact microphone and method of manufacture
JPS56141697A (en) * 1980-04-08 1981-11-05 Mitsubishi Electric Corp Preparation of vibration diaphragm for speaker
JPS58157293A (en) * 1982-03-15 1983-09-19 Mitsubishi Electric Corp Diaphragm for speaker
JPS58157294A (en) * 1982-03-15 1983-09-19 Mitsubishi Electric Corp Diaphragm for speaker
JPS5927697A (en) * 1982-08-04 1984-02-14 Sanyo Electric Co Ltd Join method of speaker diaphragm and edge
JPS59190799A (en) * 1983-04-14 1984-10-29 Onkyo Corp Fitting method of diaphragm edge
GB2145300B (en) 1983-08-16 1987-05-07 Standard Telephones Cables Ltd Electroacoustic transducer
NL8501650A (en) 1985-06-07 1987-01-02 Philips Nv ELECTRODYNAMIC CONVERTER WITH A TWO-PIECE MEMBRANE.
US5014322A (en) * 1987-03-04 1991-05-07 Hosiden Electronics Co., Ltd. Diaphragm unit of a condenser microphone, a method of fabricating the same, and a condenser microphone
JPH0715793A (en) * 1993-06-28 1995-01-17 Sony Corp Diaphragm for speaker and its molding method
DE4329637A1 (en) 1993-09-02 1995-03-09 Sennheiser Electronic Method for producing a contoured diaphragm for electroacoustic transducers such as headphones, and a transducer diaphragm produced in accordance with this method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277023A (en) * 1968-08-27 1972-06-07 Emi Ltd Improvements in or relating to diaphragms
DE2238831A1 (en) * 1971-08-11 1973-02-22 Shell Int Research THERMOPLASTIC HOLLOW SHAPED PART AND PROCESS FOR ITS MANUFACTURING

Also Published As

Publication number Publication date
US6185809B1 (en) 2001-02-13
EP0814637A2 (en) 1997-12-29
DE59712472D1 (en) 2005-12-15
EP0814637B1 (en) 2005-11-09
JP3927651B2 (en) 2007-06-13
AT403751B (en) 1998-05-25
JPH1070794A (en) 1998-03-10
ATA108596A (en) 1997-09-15
DK0814637T3 (en) 2006-03-20
ATE309686T1 (en) 2005-11-15

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