EP0126841A3 - Loudspeaker diaphragm - Google Patents

Loudspeaker diaphragm Download PDF

Info

Publication number
EP0126841A3
EP0126841A3 EP84100977A EP84100977A EP0126841A3 EP 0126841 A3 EP0126841 A3 EP 0126841A3 EP 84100977 A EP84100977 A EP 84100977A EP 84100977 A EP84100977 A EP 84100977A EP 0126841 A3 EP0126841 A3 EP 0126841A3
Authority
EP
European Patent Office
Prior art keywords
thickness
loudspeaker diaphragm
paper
layers
membrane
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
EP84100977A
Other languages
German (de)
French (fr)
Other versions
EP0126841A2 (en
Inventor
Michael Bolz
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.)
Visaton Peter Schukat
Original Assignee
Visaton Peter Schukat
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 Visaton Peter Schukat filed Critical Visaton Peter Schukat
Publication of EP0126841A2 publication Critical patent/EP0126841A2/en
Publication of EP0126841A3 publication Critical patent/EP0126841A3/en
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
    • 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
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Eine Lautsprechermembran aus zwei Papierschichten, zwischen denen eine Zwischenschicht aus einem mit kleinen Unterbrechungen (6) versehenen Kunststoff mit einem Ela­ stizitätsmodul von mehr als 25 000 daN/cm² vorgesehen ist, die eine Dicke von mindestens dem Einfachen bis höchstens dem Dreifachen der Dicke einer der Papierschichten aufweist und diese flächig miteinander verbindet. Die Membran ist besonders leicht und formsteif. A speaker membrane made of two layers of paper, between which an intermediate layer of one with small ones Interruptions (6) provided plastic with an ela strength module of more than 25,000 daN / cm² is provided, which is a thickness from at least the simple to the maximum three times the thickness of one of the paper layers and flatly connects them with each other. The membrane is particularly light and dimensionally stable.

EP84100977A 1983-05-28 1984-02-01 Loudspeaker diaphragm Ceased EP0126841A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3319423 1983-05-28
DE19833319423 DE3319423C2 (en) 1983-05-28 1983-05-28 Speaker cone

Publications (2)

Publication Number Publication Date
EP0126841A2 EP0126841A2 (en) 1984-12-05
EP0126841A3 true EP0126841A3 (en) 1986-03-12

Family

ID=6200129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100977A Ceased EP0126841A3 (en) 1983-05-28 1984-02-01 Loudspeaker diaphragm

Country Status (3)

Country Link
EP (1) EP0126841A3 (en)
CA (1) CA1210338A (en)
DE (1) DE3319423C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925787C1 (en) * 1999-06-05 2000-12-21 Roehm Gmbh Process for the production of membranes for electroacoustic transducers and membranes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974931C (en) * 1950-06-08 1961-06-08 Emil Dr Podszus Loudspeaker membrane made of frozen foam
DE1925119A1 (en) * 1968-05-18 1969-11-27 Nippon Musical Instruments Mfg Loudspeaker diaphragm having plastics foam sounding
FR2297536A1 (en) * 1975-01-07 1976-08-06 Manger J W MEMBRANE FOR ELECTRO-ACOUSTIC CONVERTER AND ELECTRO-ACOUSTIC CONVERTER EQUIPPED WITH SUCH A MEMBRANE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851745C2 (en) * 1978-11-30 1985-01-10 Elektrotechnik Ehmann Gmbh, 6953 Gundelsheim Multi-layer membrane for an electroacoustic transducer
JPS579194A (en) * 1980-06-18 1982-01-18 Pioneer Electronic Corp Diaphragm for speaker
JPS57155897A (en) * 1981-03-20 1982-09-27 Matsushita Electric Ind Co Ltd Diaphragm for speaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974931C (en) * 1950-06-08 1961-06-08 Emil Dr Podszus Loudspeaker membrane made of frozen foam
DE1925119A1 (en) * 1968-05-18 1969-11-27 Nippon Musical Instruments Mfg Loudspeaker diaphragm having plastics foam sounding
FR2297536A1 (en) * 1975-01-07 1976-08-06 Manger J W MEMBRANE FOR ELECTRO-ACOUSTIC CONVERTER AND ELECTRO-ACOUSTIC CONVERTER EQUIPPED WITH SUCH A MEMBRANE

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 259 (E-149)[1137], 17. Dezember 1982; & JP-A-57 155 897 (MATSUSHITA DENKI SANGYO K.K.) 27.09.1982 *
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 67 (E-104)[945], 28. April 1982; & JP-A-57 009 194 (PIONEER K.K.) 18.01.1982 *
PATENTS ABSTRACTS OF JAPAN, Band 6, Nr. 67 (E-104)[945], 28. April 1982; & JP - A - 57 9194 (PIONEER K.K.) 18.01.1982 *
WIRELESS WORLD, Dezember 1958, Seiten 564-569, I.P.C. Business Press Ltd., Hayloards Heath, Sussex, GB; D.A. BARLOW: "Rigidity of loudspeaker Diaphragms, advantages of sandwich construction" *

Also Published As

Publication number Publication date
CA1210338A (en) 1986-08-26
DE3319423A1 (en) 1984-11-29
DE3319423C2 (en) 1985-03-28
EP0126841A2 (en) 1984-12-05

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Inventor name: BOLZ, MICHAEL