JPS5731297A - Speaker diaphragm and its production - Google Patents
Speaker diaphragm and its productionInfo
- Publication number
- JPS5731297A JPS5731297A JP10612380A JP10612380A JPS5731297A JP S5731297 A JPS5731297 A JP S5731297A JP 10612380 A JP10612380 A JP 10612380A JP 10612380 A JP10612380 A JP 10612380A JP S5731297 A JPS5731297 A JP S5731297A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- foaming
- edge part
- cone part
- elasticity
- 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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
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 diaphragm in which a cone part and an edge part having different modulus of elasticity are unified, by securing a 3-layer structure in which the both surfaces of a heat foamed sheet is held between the thermoplastic resin containing the reinforced fibers and giving three processes of the heating lamination, the foaming softening and the cold pressing respectively. CONSTITUTION:The both surface of a core sheet 1 (low-density polyethylene containing a foaming agent, etc.) are held between surface sheets 2 and 2' (high-density polyethylene synthetic pulp containing carbon fibers, etc.) and heated at a temperature lower than the foaming to obtain a 3-layer lamination sheet. Further this sheet is heated to foam the core material 1 and subjected to the cold pressing while it is soft. In this case, the size of both the upper and lower molds are made that the cone part is contacted and the edge part have a gap respectively. Thus the cone part 9 is pressed into a thin film having no hole and a high modulus of elasticity; while the edge part 10 is kept under a foamed state to secure a large internal loss. In other words, the edge resonance can be suppressed to realize a fixed type diaphragm having the flat sound pressure frequency characteristics. This process is simple, and a continuous production is possible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10612380A JPS5731297A (en) | 1980-07-31 | 1980-07-31 | Speaker diaphragm and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10612380A JPS5731297A (en) | 1980-07-31 | 1980-07-31 | Speaker diaphragm and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5731297A true JPS5731297A (en) | 1982-02-19 |
Family
ID=14425649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10612380A Pending JPS5731297A (en) | 1980-07-31 | 1980-07-31 | Speaker diaphragm and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5731297A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02194800A (en) * | 1989-01-23 | 1990-08-01 | Sanon Kk | Edge for speaker and its manufacture |
EP0647386A4 (en) * | 1992-05-14 | 1995-01-31 | Fred D Yocum | Loudspeaker cone suspension rim having integral gasket. |
JP2002044782A (en) * | 2000-07-28 | 2002-02-08 | Foster Electric Co Ltd | Diaphragm for electric-acoustic transducer |
US6892850B2 (en) * | 2002-04-01 | 2005-05-17 | Pioneer Corporation | Surround for speaker system and manufacturing method thereof |
-
1980
- 1980-07-31 JP JP10612380A patent/JPS5731297A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02194800A (en) * | 1989-01-23 | 1990-08-01 | Sanon Kk | Edge for speaker and its manufacture |
EP0647386A4 (en) * | 1992-05-14 | 1995-01-31 | Fred D Yocum | Loudspeaker cone suspension rim having integral gasket. |
EP0647386A1 (en) * | 1992-05-14 | 1995-04-12 | YOCUM, Fred D. | Loudspeaker cone suspension rim having integral gasket |
JP2002044782A (en) * | 2000-07-28 | 2002-02-08 | Foster Electric Co Ltd | Diaphragm for electric-acoustic transducer |
US6892850B2 (en) * | 2002-04-01 | 2005-05-17 | Pioneer Corporation | Surround for speaker system and manufacturing method thereof |
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