JPS572192A - Speaker diaphragm - Google Patents
Speaker diaphragmInfo
- 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
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.
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)
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 |
-
1980
- 1980-06-04 JP JP7603080A patent/JPS5853558B2/en not_active Expired
Cited By (3)
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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