JPS57208793A - Speaker diaphragm plate - Google Patents

Speaker diaphragm plate

Info

Publication number
JPS57208793A
JPS57208793A JP9386681A JP9386681A JPS57208793A JP S57208793 A JPS57208793 A JP S57208793A JP 9386681 A JP9386681 A JP 9386681A JP 9386681 A JP9386681 A JP 9386681A JP S57208793 A JPS57208793 A JP S57208793A
Authority
JP
Japan
Prior art keywords
film
base
diaphragm plate
speaker diaphragm
clipped
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
JP9386681A
Other languages
Japanese (ja)
Inventor
Toshio Haneda
Yoichi Murayama
Kunihiro Kashiwagi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9386681A priority Critical patent/JPS57208793A/en
Publication of JPS57208793A publication Critical patent/JPS57208793A/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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped

Landscapes

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

Abstract

PURPOSE:To prevent the generation of deformation during the use of speaker, by removing a distortion in a plastic thin plate base, forming a film of metal or metallic compound with the high frequency ion plating while cooling the film gradually. CONSTITUTION:Plastic film 1-1 is clipped between a pair of male and female molds 2-1 and 2-2, the film is formed at 230 deg.C under 1.5kg/cm<2>, the film is held as it is being clipped between the molds 2-1 and 2-2, is cooled and a base formed with heat processing can be obtained. The heat hysteresis inherent in the base can all be cancelled by the heat processing and the distortion in the base can be eliminated. On the surface of the base, the film based on high hardness and high elastic metal or its metallic compound is formed with a high frequency ion plating and gradually cooled to form a speaker diaphragm plate.
JP9386681A 1981-06-19 1981-06-19 Speaker diaphragm plate Pending JPS57208793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9386681A JPS57208793A (en) 1981-06-19 1981-06-19 Speaker diaphragm plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9386681A JPS57208793A (en) 1981-06-19 1981-06-19 Speaker diaphragm plate

Publications (1)

Publication Number Publication Date
JPS57208793A true JPS57208793A (en) 1982-12-21

Family

ID=14094363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9386681A Pending JPS57208793A (en) 1981-06-19 1981-06-19 Speaker diaphragm plate

Country Status (1)

Country Link
JP (1) JPS57208793A (en)

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