JPS57196694A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS57196694A JPS57196694A JP8091081A JP8091081A JPS57196694A JP S57196694 A JPS57196694 A JP S57196694A JP 8091081 A JP8091081 A JP 8091081A JP 8091081 A JP8091081 A JP 8091081A JP S57196694 A JPS57196694 A JP S57196694A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- fiber
- increased
- porous
- density
- 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.)
- Pending
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 decrease the density of a diaphragm and to extend the reproducing frequency band, by forming a diaphragm mixing porous acryl fiber with wooden pulp. CONSTITUTION:A diaphragm is formed by mixing a natural fiber or synthetic fiber to wooden pulp and beating then machining the mixture. As the mixed fiber, 5-40% of porous acryl fiber is conbined. This fiber is porous and the cross section shows discontinuous lotus root and openings are provided on the surface of fiber. The density of the diaphragm is low and the thickness of the diaphragm can be increased if the weight of the oscillation system is constant. Thus, the stiffness of the top of the diaphragm is increased, high range resonance frequency is increased and the band of reproduction can be extended.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8091081A JPS57196694A (en) | 1981-05-29 | 1981-05-29 | Diaphragm for speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8091081A JPS57196694A (en) | 1981-05-29 | 1981-05-29 | Diaphragm for speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57196694A true JPS57196694A (en) | 1982-12-02 |
Family
ID=13731535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8091081A Pending JPS57196694A (en) | 1981-05-29 | 1981-05-29 | Diaphragm for speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57196694A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0594435A1 (en) * | 1992-10-22 | 1994-04-27 | Asahi Kasei Kogyo Kabushiki Kaisha | Speaker cone and process for production thereof |
JP2007235521A (en) * | 2006-03-01 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Production facility for paper diaphragm for speaker, paper diaphragm for speaker manufactured by the production facility, and speaker |
JP2007267179A (en) * | 2006-03-29 | 2007-10-11 | Matsushita Electric Ind Co Ltd | Method for manufacturing component for speaker by papermaking, component for speaker by papermaking manufactured by the method, and speaker |
US8144912B2 (en) | 2006-03-01 | 2012-03-27 | Panasonic Corporation | Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker |
US8343313B2 (en) | 2006-03-01 | 2013-01-01 | Panasonic Corporation | Plant for production of paper-made part for speaker, paper-made part for speaker produced thereby, and speaker utilizing the same |
-
1981
- 1981-05-29 JP JP8091081A patent/JPS57196694A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0594435A1 (en) * | 1992-10-22 | 1994-04-27 | Asahi Kasei Kogyo Kabushiki Kaisha | Speaker cone and process for production thereof |
AU652897B2 (en) * | 1992-10-22 | 1994-09-08 | Asahi Kasei Kogyo Kabushiki Kaisha | Speaker cone and process for production thereof |
US5458958A (en) * | 1992-10-22 | 1995-10-17 | Asahi Kasei Kogyo Kabushiki Kaisha | Speaker cone and process for production thereof |
JP2007235521A (en) * | 2006-03-01 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Production facility for paper diaphragm for speaker, paper diaphragm for speaker manufactured by the production facility, and speaker |
US8144912B2 (en) | 2006-03-01 | 2012-03-27 | Panasonic Corporation | Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker |
US8343313B2 (en) | 2006-03-01 | 2013-01-01 | Panasonic Corporation | Plant for production of paper-made part for speaker, paper-made part for speaker produced thereby, and speaker utilizing the same |
JP2007267179A (en) * | 2006-03-29 | 2007-10-11 | Matsushita Electric Ind Co Ltd | Method for manufacturing component for speaker by papermaking, component for speaker by papermaking manufactured by the method, and speaker |
JP4742940B2 (en) * | 2006-03-29 | 2011-08-10 | パナソニック株式会社 | Speaker papermaking part manufacturing method, speaker papermaking part manufactured by this manufacturing method, and speaker |
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