JPS572192A - Speaker diaphragm - Google Patents

Speaker diaphragm

Info

Publication number
JPS572192A
JPS572192A JP7603080A JP7603080A JPS572192A JP S572192 A JPS572192 A JP S572192A JP 7603080 A JP7603080 A JP 7603080A JP 7603080 A JP7603080 A JP 7603080A JP S572192 A JPS572192 A JP S572192A
Authority
JP
Japan
Prior art keywords
diaphragm
graphite
control material
phenol resin
characteristic control
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
JP7603080A
Other languages
Japanese (ja)
Other versions
JPS5853558B2 (en
Inventor
Kazuo Tsuchiya
Fumio Kawahara
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.)
Mogami Denki Corp
Pioneer Corp
Original Assignee
Mogami Denki Corp
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 Mogami Denki Corp, Pioneer Electronic Corp filed Critical Mogami Denki Corp
Priority to JP7603080A priority Critical patent/JPS5853558B2/en
Publication of JPS572192A publication Critical patent/JPS572192A/en
Publication of JPS5853558B2 publication Critical patent/JPS5853558B2/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 speaker diaphragm having a high efficiency, an excellent moisture resistance and heat resistance, by impregnating a characteristic control material obtained by dispersing graphite into a dipping agent for a diaphragm made of pulp at the whole or part of its thickness direction. CONSTITUTION:A diaphragm prototype of a prescribed form is paper-made by using the crushed pulp and then dipped into a solution of a characteristic control material. This control material is obtained by mixing and dissolving the phenol resin into alcohol and adding the graphite. Then the diaphragm prototype is taken out of the solution of characteristic control material to undergo a forming with pressure and heating after a predrying. Thus a prescribed diaphragm is obtained. The diaphragm thus obtined contains the graphite and phenol resin over the entire section widthwise and thus forms an impermeable material containing the phenol resin filled among the graphite particles. This prevents the leakage of air to ensure an excellent reistance to both moisture and heat.
JP7603080A 1980-06-04 1980-06-04 Diaphragm for speaker Expired JPS5853558B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7603080A JPS5853558B2 (en) 1980-06-04 1980-06-04 Diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7603080A JPS5853558B2 (en) 1980-06-04 1980-06-04 Diaphragm for speaker

Publications (2)

Publication Number Publication Date
JPS572192A true JPS572192A (en) 1982-01-07
JPS5853558B2 JPS5853558B2 (en) 1983-11-30

Family

ID=13593416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7603080A Expired JPS5853558B2 (en) 1980-06-04 1980-06-04 Diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS5853558B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6988584B2 (en) * 2002-05-20 2006-01-24 Matsushita Electric Industrial Co., Ltd. Speaker diaphragm edge and its manufacturing method
JP2008237997A (en) * 2007-03-26 2008-10-09 Sumitomo Heavy Ind Ltd Waste water treatment apparatus
JP2008264646A (en) * 2007-04-18 2008-11-06 Ihi Corp High-pressure fluidized bed aerobic wastewater treatment equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6988584B2 (en) * 2002-05-20 2006-01-24 Matsushita Electric Industrial Co., Ltd. Speaker diaphragm edge and its manufacturing method
JP2008237997A (en) * 2007-03-26 2008-10-09 Sumitomo Heavy Ind Ltd Waste water treatment apparatus
JP2008264646A (en) * 2007-04-18 2008-11-06 Ihi Corp High-pressure fluidized bed aerobic wastewater treatment equipment

Also Published As

Publication number Publication date
JPS5853558B2 (en) 1983-11-30

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