JPS55125797A - Diaphragm plate for acoustic unit - Google Patents

Diaphragm plate for acoustic unit

Info

Publication number
JPS55125797A
JPS55125797A JP3326379A JP3326379A JPS55125797A JP S55125797 A JPS55125797 A JP S55125797A JP 3326379 A JP3326379 A JP 3326379A JP 3326379 A JP3326379 A JP 3326379A JP S55125797 A JPS55125797 A JP S55125797A
Authority
JP
Japan
Prior art keywords
diaphragm plate
macropolymer
carbon black
graphite powder
internal loss
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
JP3326379A
Other languages
Japanese (ja)
Other versions
JPS6056360B2 (en
Inventor
Kunio Imai
Nobuhiro Tsukagoshi
Shinichi Yokozeki
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 JP54033263A priority Critical patent/JPS6056360B2/en
Priority to GB8009358A priority patent/GB2046274B/en
Priority to DE19803011056 priority patent/DE3011056C2/en
Priority to US06/132,980 priority patent/US4341838A/en
Publication of JPS55125797A publication Critical patent/JPS55125797A/en
Publication of JPS6056360B2 publication Critical patent/JPS6056360B2/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

Abstract

PURPOSE:To increase the specific elasticity and internal loss by forming the vibration plate with macropolymer material inclusing graphite powder and carbon black. CONSTITUTION:Graphite powder 2 and carbon black 3 are added by a given amount to macropolymer material 1 and after heating, mixing this, sheet is obtained by rolling. By vacuum forming, press forming, etc. of this sheet material, the diapharagm plate A is formed. Thus, high elasticity is achieved with the presence of graphite powder and high internal loss can be achieved by the presence of carbon black. Accordingly, the diaphragm plate with light weight, high elasticity and greater internal loss is obtained. Further, the characteristics of diaphragm plate can be controlled with the selection of mixing ratio of each material and the macropolymer material.
JP54033263A 1979-03-23 1979-03-23 Diaphragm for audio equipment Expired JPS6056360B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP54033263A JPS6056360B2 (en) 1979-03-23 1979-03-23 Diaphragm for audio equipment
GB8009358A GB2046274B (en) 1979-03-23 1980-03-20 Moulding compositions and acoustic articles moulded therefrom
DE19803011056 DE3011056C2 (en) 1979-03-23 1980-03-21 Shaped body for use as a component in acoustic instruments
US06/132,980 US4341838A (en) 1979-03-23 1980-03-24 Molding compositions and diaphragms, arm pipes and head shells molded therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54033263A JPS6056360B2 (en) 1979-03-23 1979-03-23 Diaphragm for audio equipment

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6395779A Division JPS55127445A (en) 1979-03-23 1979-05-25 Molding material

Publications (2)

Publication Number Publication Date
JPS55125797A true JPS55125797A (en) 1980-09-27
JPS6056360B2 JPS6056360B2 (en) 1985-12-10

Family

ID=12381626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54033263A Expired JPS6056360B2 (en) 1979-03-23 1979-03-23 Diaphragm for audio equipment

Country Status (1)

Country Link
JP (1) JPS6056360B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869199A (en) * 1981-10-21 1983-04-25 Onkyo Corp Diaphragm for speaker
JPS5875996A (en) * 1981-10-31 1983-05-07 Onkyo Corp Edge for speaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS496019A (en) * 1972-04-21 1974-01-19
JPS5324828A (en) * 1976-08-18 1978-03-08 Matsushita Electric Ind Co Ltd Vibration plate for acoustic instrument and pre paration therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS496019A (en) * 1972-04-21 1974-01-19
JPS5324828A (en) * 1976-08-18 1978-03-08 Matsushita Electric Ind Co Ltd Vibration plate for acoustic instrument and pre paration therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869199A (en) * 1981-10-21 1983-04-25 Onkyo Corp Diaphragm for speaker
JPH029517B2 (en) * 1981-10-21 1990-03-02 Onkyo Kk
JPS5875996A (en) * 1981-10-31 1983-05-07 Onkyo Corp Edge for speaker
JPH029518B2 (en) * 1981-10-31 1990-03-02 Onkyo Kk

Also Published As

Publication number Publication date
JPS6056360B2 (en) 1985-12-10

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