JPS5619298A - Speaker diaphragm - Google Patents

Speaker diaphragm

Info

Publication number
JPS5619298A
JPS5619298A JP9540179A JP9540179A JPS5619298A JP S5619298 A JPS5619298 A JP S5619298A JP 9540179 A JP9540179 A JP 9540179A JP 9540179 A JP9540179 A JP 9540179A JP S5619298 A JPS5619298 A JP S5619298A
Authority
JP
Japan
Prior art keywords
cone
knitted
substance
density
fiber materials
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
JP9540179A
Other languages
Japanese (ja)
Inventor
Noriyuki Arakawa
Hideo Kobayashi
Mitsuru Takashima
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.)
Sony Corp
Original Assignee
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.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP9540179A priority Critical patent/JPS5619298A/en
Publication of JPS5619298A publication Critical patent/JPS5619298A/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; 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

PURPOSE:To increase the vibrating efficiency as well as facilitate an easy manufacture, by expanding one end of a cylindrical knitted substance formed by knitting the fiber materials to obtain a conical form and then giving a close density of the fibers at the neck part of the cone with a coarse density given at the extended opening part respectively. CONSTITUTION:The fiber materials, e.g., carbon fiber materials 3 are knitted to form a cylindrical substance, and then this knitted substance is expanded outward at one end to btain a conical form through molding by the metal mold. Thus each fiber material 3 extends substantially from the neck part toward the expanded opening part of the cone and spirally or radially. At the same time, the density of materials 3 is close at the center part, i.e., the neck part and then coarse at the circumference part, i.e., the expanded opening part of the cone respectively.
JP9540179A 1979-07-26 1979-07-26 Speaker diaphragm Pending JPS5619298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9540179A JPS5619298A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9540179A JPS5619298A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Publications (1)

Publication Number Publication Date
JPS5619298A true JPS5619298A (en) 1981-02-23

Family

ID=14136632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9540179A Pending JPS5619298A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Country Status (1)

Country Link
JP (1) JPS5619298A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000744A1 (en) * 1980-08-14 1982-03-04 P Sylvestre Improvements in electroacoustic transducer diaphragms
FR2518348A1 (en) * 1981-12-16 1983-06-17 Guyot Michel SPEAKER MEMBRANE AND METHOD FOR MANUFACTURING THE SAME
JPS59146953A (en) * 1983-02-12 1984-08-23 Central Glass Co Ltd Production of heat ray reflection glass
JPH03126643A (en) * 1989-10-09 1991-05-29 Asahi Glass Co Ltd Production of heat ray reflecting glass and coating solution
EP1615466A3 (en) * 2004-07-07 2006-12-27 Tadashi Nagaoka Acoustic diaphragm
US8345916B2 (en) 2007-05-18 2013-01-01 Sennheiser Electronic Gmbh & Co. Kg Electroacoustic sound transducer, receiver and microphone

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000744A1 (en) * 1980-08-14 1982-03-04 P Sylvestre Improvements in electroacoustic transducer diaphragms
FR2518348A1 (en) * 1981-12-16 1983-06-17 Guyot Michel SPEAKER MEMBRANE AND METHOD FOR MANUFACTURING THE SAME
JPS59146953A (en) * 1983-02-12 1984-08-23 Central Glass Co Ltd Production of heat ray reflection glass
JPH0130771B2 (en) * 1983-02-12 1989-06-21 Central Glass Co Ltd
JPH03126643A (en) * 1989-10-09 1991-05-29 Asahi Glass Co Ltd Production of heat ray reflecting glass and coating solution
EP1615466A3 (en) * 2004-07-07 2006-12-27 Tadashi Nagaoka Acoustic diaphragm
US7483545B2 (en) 2004-07-07 2009-01-27 Tadashi Nagaoka Acoustic diaphragm
US7986805B2 (en) 2004-07-07 2011-07-26 Tadashi Nagaoka Acoustic diaphragm
US8345916B2 (en) 2007-05-18 2013-01-01 Sennheiser Electronic Gmbh & Co. Kg Electroacoustic sound transducer, receiver and microphone

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