JPS57196694A - Diaphragm for speaker - Google Patents

Diaphragm for speaker

Info

Publication number
JPS57196694A
JPS57196694A JP8091081A JP8091081A JPS57196694A JP S57196694 A JPS57196694 A JP S57196694A JP 8091081 A JP8091081 A JP 8091081A JP 8091081 A JP8091081 A JP 8091081A JP S57196694 A JPS57196694 A JP S57196694A
Authority
JP
Japan
Prior art keywords
diaphragm
fiber
increased
porous
density
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.)
Pending
Application number
JP8091081A
Other languages
Japanese (ja)
Inventor
Yoshihide Arakawa
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP8091081A priority Critical patent/JPS57196694A/en
Publication of JPS57196694A publication Critical patent/JPS57196694A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To decrease the density of a diaphragm and to extend the reproducing frequency band, by forming a diaphragm mixing porous acryl fiber with wooden pulp. CONSTITUTION:A diaphragm is formed by mixing a natural fiber or synthetic fiber to wooden pulp and beating then machining the mixture. As the mixed fiber, 5-40% of porous acryl fiber is conbined. This fiber is porous and the cross section shows discontinuous lotus root and openings are provided on the surface of fiber. The density of the diaphragm is low and the thickness of the diaphragm can be increased if the weight of the oscillation system is constant. Thus, the stiffness of the top of the diaphragm is increased, high range resonance frequency is increased and the band of reproduction can be extended.
JP8091081A 1981-05-29 1981-05-29 Diaphragm for speaker Pending JPS57196694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8091081A JPS57196694A (en) 1981-05-29 1981-05-29 Diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8091081A JPS57196694A (en) 1981-05-29 1981-05-29 Diaphragm for speaker

Publications (1)

Publication Number Publication Date
JPS57196694A true JPS57196694A (en) 1982-12-02

Family

ID=13731535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8091081A Pending JPS57196694A (en) 1981-05-29 1981-05-29 Diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS57196694A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594435A1 (en) * 1992-10-22 1994-04-27 Asahi Kasei Kogyo Kabushiki Kaisha Speaker cone and process for production thereof
JP2007235521A (en) * 2006-03-01 2007-09-13 Matsushita Electric Ind Co Ltd Production equipment for loudspeaker paper diaphragms, loudspeaker paper diaphragms and loudspeakers manufactured by the production equipment
JP2007267179A (en) * 2006-03-29 2007-10-11 Matsushita Electric Ind Co Ltd Speaker papermaking part manufacturing method, speaker papermaking part manufactured by this manufacturing method, and speaker
US8144912B2 (en) 2006-03-01 2012-03-27 Panasonic Corporation Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594435A1 (en) * 1992-10-22 1994-04-27 Asahi Kasei Kogyo Kabushiki Kaisha Speaker cone and process for production thereof
AU652897B2 (en) * 1992-10-22 1994-09-08 Asahi Kasei Kogyo Kabushiki Kaisha Speaker cone and process for production thereof
US5458958A (en) * 1992-10-22 1995-10-17 Asahi Kasei Kogyo Kabushiki Kaisha Speaker cone and process for production thereof
JP2007235521A (en) * 2006-03-01 2007-09-13 Matsushita Electric Ind Co Ltd Production equipment for loudspeaker paper diaphragms, loudspeaker paper diaphragms and loudspeakers manufactured by the production equipment
US8144912B2 (en) 2006-03-01 2012-03-27 Panasonic Corporation Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker
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
JP2007267179A (en) * 2006-03-29 2007-10-11 Matsushita Electric Ind Co Ltd Speaker papermaking part manufacturing method, speaker papermaking part manufactured by this manufacturing method, and speaker

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