JPS56137787A - Enclosure for acoustic equipment - Google Patents

Enclosure for acoustic equipment

Info

Publication number
JPS56137787A
JPS56137787A JP4027080A JP4027080A JPS56137787A JP S56137787 A JPS56137787 A JP S56137787A JP 4027080 A JP4027080 A JP 4027080A JP 4027080 A JP4027080 A JP 4027080A JP S56137787 A JPS56137787 A JP S56137787A
Authority
JP
Japan
Prior art keywords
enclosure
graphite powder
resin
vinyl chloride
acoustic equipment
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
JP4027080A
Other languages
Japanese (ja)
Other versions
JPS6144440B2 (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 JP4027080A priority Critical patent/JPS56137787A/en
Priority to US06/241,554 priority patent/US4343376A/en
Priority to GB8107438A priority patent/GB2071679B/en
Publication of JPS56137787A publication Critical patent/JPS56137787A/en
Publication of JPS6144440B2 publication Critical patent/JPS6144440B2/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/22—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L27/24—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Casings For Electric Apparatus (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To obtain a lightweight, high elastic and high internal loss enclosure having excellent temperature resistant characteristics, by forming an acoustic equipment enclosure by using a kneaded material consisting essentially of postchlorinated vinyl chloride and flake graphite powder. CONSTITUTION:An enclosure for acoustic equipment is made of a mixture of a post-chlorinated vinyl chloride monomer or a mixture of the monomer and polymethyl methacrylate PMMA and, at need, a kneaded material of a mixed material, obtained by mixing a rubbery material, such as acrylonitrile butadiene rubber NBR, into synthetic resin of said materials, and flake graphite powder. The flake graphite powder is oriented along the surface of the enclosure and preferably has a mean grain size of about 20mum and below. With reagard to the compounding ratio of the graphite powder and resin, the improvement of the modulus of elasticity can be expected, for example, when 10-90wt% graphite powder and 90-10wt% resin are used; moldability is not spoiled and the enbrittlement of moldings never occurs. Then compounding ratio of PMMA and post-chlorinated vinyl chloride is determined freely. Then, the 2-50wt% rubber type material is favorably mixed into the resin.
JP4027080A 1980-03-18 1980-03-31 Enclosure for acoustic equipment Granted JPS56137787A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4027080A JPS56137787A (en) 1980-03-31 1980-03-31 Enclosure for acoustic equipment
US06/241,554 US4343376A (en) 1980-03-18 1981-03-09 Vibratory elements for audio equipment
GB8107438A GB2071679B (en) 1980-03-18 1981-03-10 Vibratory elements for audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4027080A JPS56137787A (en) 1980-03-31 1980-03-31 Enclosure for acoustic equipment

Publications (2)

Publication Number Publication Date
JPS56137787A true JPS56137787A (en) 1981-10-27
JPS6144440B2 JPS6144440B2 (en) 1986-10-02

Family

ID=12575942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4027080A Granted JPS56137787A (en) 1980-03-18 1980-03-31 Enclosure for acoustic equipment

Country Status (1)

Country Link
JP (1) JPS56137787A (en)

Also Published As

Publication number Publication date
JPS6144440B2 (en) 1986-10-02

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