JPS5480733A - Speaker diaphragm - Google Patents

Speaker diaphragm

Info

Publication number
JPS5480733A
JPS5480733A JP14813777A JP14813777A JPS5480733A JP S5480733 A JPS5480733 A JP S5480733A JP 14813777 A JP14813777 A JP 14813777A JP 14813777 A JP14813777 A JP 14813777A JP S5480733 A JPS5480733 A JP S5480733A
Authority
JP
Japan
Prior art keywords
carbon fibers
woven
improve
reinforced
plastics
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
JP14813777A
Other languages
Japanese (ja)
Inventor
Toshio Haneda
Toshitaka Sugimoto
Masaru Kurata
Takemi Watanabe
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
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
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 Chemical Co Ltd, Hitachi Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP14813777A priority Critical patent/JPS5480733A/en
Publication of JPS5480733A publication Critical patent/JPS5480733A/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

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 simplify the steps and improve the characteristics by laminating or sandwitching plastics, which are easy in handling and production and which are reinforced with woven carbon fibers, and a metal foil. CONSTITUTION:As woven fibric of carbon fibers, a weaving structure is selected suitably for purposes from one of plain, twill and satin weaves. One kind is selected from a thermoplastic resin such as polycarbonate or polyethylene or a thermoset resin such as phenol or epoxy and is dissolved in a suitble organic solvent. Woven fabric of carbon fibers is dipped in the solution and is dried with air and by heat to produce a prepreg plate of plastics reinforced with woven fabric of carbon fibers. An aluminum or titanium foil of a preset thinkness is applied to one or both sides of the prepreg plate, which is impregnated with 15 to 25 wt. %. risin and the cutting is accomplished to have a preset size. The cut one is held between a pair of male and female molds having a shape corresponding to a desired diaphramg and is molded at an elevated temperature and under pressure. Thus, it is possible to improve the characteristics.
JP14813777A 1977-12-12 1977-12-12 Speaker diaphragm Pending JPS5480733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14813777A JPS5480733A (en) 1977-12-12 1977-12-12 Speaker diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14813777A JPS5480733A (en) 1977-12-12 1977-12-12 Speaker diaphragm

Publications (1)

Publication Number Publication Date
JPS5480733A true JPS5480733A (en) 1979-06-27

Family

ID=15446086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14813777A Pending JPS5480733A (en) 1977-12-12 1977-12-12 Speaker diaphragm

Country Status (1)

Country Link
JP (1) JPS5480733A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997034U (en) * 1982-12-22 1984-06-30 ダイヤテックス株式会社 Aluminum vapor deposited sheet
JPH01309499A (en) * 1989-04-14 1989-12-13 Onkyo Corp Diaphragm for speaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997034U (en) * 1982-12-22 1984-06-30 ダイヤテックス株式会社 Aluminum vapor deposited sheet
JPH01309499A (en) * 1989-04-14 1989-12-13 Onkyo Corp Diaphragm for speaker

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