GB1271539A - Diaphragm for loud speakers and method of making the same - Google Patents

Diaphragm for loud speakers and method of making the same

Info

Publication number
GB1271539A
GB1271539A GB62585/69A GB6258569A GB1271539A GB 1271539 A GB1271539 A GB 1271539A GB 62585/69 A GB62585/69 A GB 62585/69A GB 6258569 A GB6258569 A GB 6258569A GB 1271539 A GB1271539 A GB 1271539A
Authority
GB
United Kingdom
Prior art keywords
cloth
resin
diaphragm
fused
foamed
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.)
Expired
Application number
GB62585/69A
Inventor
Hiroaki Shinohara
Ryoji Yoshida
Hidekazu Ichikawa
Takahisa Sano
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.)
Foster Electric Co Ltd
Original Assignee
Foster Electric 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 Foster Electric Co Ltd filed Critical Foster Electric Co Ltd
Publication of GB1271539A publication Critical patent/GB1271539A/en
Expired 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
    • H04R7/12—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
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

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

Abstract

1,271,539. Loud-speaker diaphragms. FOSTER ELECTRIC CO. Ltd. 23 Dec., 1969 [22 Oct., 1969 (2)], No. 62585/69. Heading H4J A loud-speaker diaphragm has a foamed synthetic resin fused to one or both sides of a cloth. The cloth 4 (Fig. 4) has foamed resin 5 fused to it and may have a cloth insertion 7. A flat diaphragm (Fig. 2, not shown) has foamed resin fused on each side, except at the edge, which is corrugated. The cloth may be preimpregnated with a thermosetting resin (e.g. a phenolic urethane, polyester or epoxy resin). The foamed resin (e.g. a urethane, styrene, vinyl "A.B.S." or epoxy resin) may be cellular or collapsed. The cloth comprises yarns or rovings and may be of natural, synthetic or inorganic fibres and may be non-woven fabric.
GB62585/69A 1969-10-22 1969-12-23 Diaphragm for loud speakers and method of making the same Expired GB1271539A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8441769 1969-10-22
JP10038569 1969-10-22

Publications (1)

Publication Number Publication Date
GB1271539A true GB1271539A (en) 1972-04-19

Family

ID=26425455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB62585/69A Expired GB1271539A (en) 1969-10-22 1969-12-23 Diaphragm for loud speakers and method of making the same

Country Status (3)

Country Link
DE (1) DE2003815B1 (en)
FR (1) FR2067239B1 (en)
GB (1) GB1271539A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711996A1 (en) * 1976-03-19 1977-09-29 Hugh Dudley Harwood MEMBRANE FOR A SPEAKER
GB2245451A (en) * 1990-04-13 1992-01-02 Sansui Electric Co Diaphragm for speaker
EP1788839A1 (en) 2005-11-21 2007-05-23 Pioneer Corporation Speaker apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8301653A (en) * 1983-05-10 1984-12-03 Philips Nv ELECTRO-ACOUSTIC CONVERTER WITH AN AIR-PERMISSIBLE MEMBRANE.
US5162619A (en) * 1987-07-03 1992-11-10 Ewd Electronic-Werke Deutschland Gmbh Diaphragm for a loudspeaker
CN103686547A (en) 2013-12-09 2014-03-26 歌尔声学股份有限公司 Loudspeaker diaphragm and manufacturing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711996A1 (en) * 1976-03-19 1977-09-29 Hugh Dudley Harwood MEMBRANE FOR A SPEAKER
GB2245451A (en) * 1990-04-13 1992-01-02 Sansui Electric Co Diaphragm for speaker
EP1788839A1 (en) 2005-11-21 2007-05-23 Pioneer Corporation Speaker apparatus
US8045745B2 (en) 2005-11-21 2011-10-25 Pioneer Corporation Edge support for a speaker apparatus comprising multiple ridges

Also Published As

Publication number Publication date
FR2067239B1 (en) 1974-03-01
FR2067239A1 (en) 1971-08-20
DE2003815B1 (en) 1971-04-22

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