JPS5619296A - Speaker diaphragm - Google Patents

Speaker diaphragm

Info

Publication number
JPS5619296A
JPS5619296A JP9540279A JP9540279A JPS5619296A JP S5619296 A JPS5619296 A JP S5619296A JP 9540279 A JP9540279 A JP 9540279A JP 9540279 A JP9540279 A JP 9540279A JP S5619296 A JPS5619296 A JP S5619296A
Authority
JP
Japan
Prior art keywords
bridge formation
layer
carbon fiber
layers
surface layer
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
JP9540279A
Other languages
Japanese (ja)
Other versions
JPS6210078B2 (en
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 JP9540279A priority Critical patent/JPS5619296A/en
Publication of JPS5619296A publication Critical patent/JPS5619296A/en
Publication of JPS6210078B2 publication Critical patent/JPS6210078B2/ja
Granted 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

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

PURPOSE:To secure a proper internal loss without lowering the rigidity and thus enhance the frequency characteristics, by laminating the carbon fiber surface layer on both surfaces of the intermediate layer via the binder which can give the common bridge formation for the polymers having different Young's moduli. CONSTITUTION:The spongelike material containing bubbles, for instance, is provide as inmatermediate layer 2. Then carbon fiber surface layer 3 and 4 plus, e.g., the surface layer composed of so-called prepreg with the unwoven fabric of the carbon fiber or the carbon fibers disposed in a fixed direction are provided on bith surfaces of layer 2. Thus at least a 3-layer structure is obtained. These layers are laminated into one body via at least two or more types of heteropolymers used for the binder to give the common bridge formation to those layers, and then receive a forming by compression. The binders have different Young's moduli from each other and also use two or more types of polymers which is capable of the be common bridge formation. With this commn bridge formation, layers 2, 3 and 4 can adhered tight to each other.
JP9540279A 1979-07-26 1979-07-26 Speaker diaphragm Granted JPS5619296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9540279A JPS5619296A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9540279A JPS5619296A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Publications (2)

Publication Number Publication Date
JPS5619296A true JPS5619296A (en) 1981-02-23
JPS6210078B2 JPS6210078B2 (en) 1987-03-04

Family

ID=14136662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9540279A Granted JPS5619296A (en) 1979-07-26 1979-07-26 Speaker diaphragm

Country Status (1)

Country Link
JP (1) JPS5619296A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60232517A (en) * 1984-02-21 1985-11-19 フユ−ジヨン・ユ−ブイ・キユアリング・システムズ・コ−ポレ−シヨン Color coded optical fiber waveguide and coloring thereof
JPS6153715U (en) * 1984-09-14 1986-04-11
WO2014175329A1 (en) * 2013-04-24 2014-10-30 三菱鉛筆株式会社 Carbonaceous acoustic diaphragm and process for producing same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60232517A (en) * 1984-02-21 1985-11-19 フユ−ジヨン・ユ−ブイ・キユアリング・システムズ・コ−ポレ−シヨン Color coded optical fiber waveguide and coloring thereof
JPS6153715U (en) * 1984-09-14 1986-04-11
JPH0440177Y2 (en) * 1984-09-14 1992-09-21
WO2014175329A1 (en) * 2013-04-24 2014-10-30 三菱鉛筆株式会社 Carbonaceous acoustic diaphragm and process for producing same
JP2014216752A (en) * 2013-04-24 2014-11-17 三菱鉛筆株式会社 Carbonaceous acoustic diaphragm and process of manufacturing the same

Also Published As

Publication number Publication date
JPS6210078B2 (en) 1987-03-04

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