JPS56137794A - Acoustic vibrator - Google Patents

Acoustic vibrator

Info

Publication number
JPS56137794A
JPS56137794A JP4027480A JP4027480A JPS56137794A JP S56137794 A JPS56137794 A JP S56137794A JP 4027480 A JP4027480 A JP 4027480A JP 4027480 A JP4027480 A JP 4027480A JP S56137794 A JPS56137794 A JP S56137794A
Authority
JP
Japan
Prior art keywords
graphite powder
acoustic vibrator
flake graphite
polymethylmethacrylate
butadiene rubber
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
JP4027480A
Other languages
Japanese (ja)
Other versions
JPS5853557B2 (en
Inventor
Nobuhiro Tsukagoshi
Shinichi Yokozeki
Sumio Hagiwara
Masataka Uchitoi
Toshikazu Yoshino
Yasuyuki Arai
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP4027480A priority Critical patent/JPS5853557B2/en
Publication of JPS56137794A publication Critical patent/JPS56137794A/en
Publication of JPS5853557B2 publication Critical patent/JPS5853557B2/en
Expired 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)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To obtain a lightweight, high elastic and high internal-loss acoustic vibrator by forming it of a kneaded material consisting essentially of polymethylmethacrylate and flake graphite powder and by orienting the flake graphite powder along the surface. CONSTITUTION:Polymethylmethacrylate is mixed as required with a rubbery material, such as acrylonitrile-butadiene rubber, isobutylene-isoprene rubber and styrene-butadiene rubber to obtain mixed material 1. Then, a mixture of said mixed material 1 and flake graphite powder 2 is molded into acoustic vibrator A. In this case, graphite powder 2 is oriented along the surface.
JP4027480A 1980-03-31 1980-03-31 acoustic vibrator Expired JPS5853557B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4027480A JPS5853557B2 (en) 1980-03-31 1980-03-31 acoustic vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4027480A JPS5853557B2 (en) 1980-03-31 1980-03-31 acoustic vibrator

Publications (2)

Publication Number Publication Date
JPS56137794A true JPS56137794A (en) 1981-10-27
JPS5853557B2 JPS5853557B2 (en) 1983-11-30

Family

ID=12576045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4027480A Expired JPS5853557B2 (en) 1980-03-31 1980-03-31 acoustic vibrator

Country Status (1)

Country Link
JP (1) JPS5853557B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204699A (en) * 1982-05-24 1983-11-29 Kuraray Co Ltd Acoustic diaphragm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204699A (en) * 1982-05-24 1983-11-29 Kuraray Co Ltd Acoustic diaphragm
JPS6347317B2 (en) * 1982-05-24 1988-09-21 Kuraray Co

Also Published As

Publication number Publication date
JPS5853557B2 (en) 1983-11-30

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