JPS6049400B2 - Manufacturing method of speaker diaphragm - Google Patents
Manufacturing method of speaker diaphragmInfo
- Publication number
- JPS6049400B2 JPS6049400B2 JP15512478A JP15512478A JPS6049400B2 JP S6049400 B2 JPS6049400 B2 JP S6049400B2 JP 15512478 A JP15512478 A JP 15512478A JP 15512478 A JP15512478 A JP 15512478A JP S6049400 B2 JPS6049400 B2 JP S6049400B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- manufacturing
- speaker
- speaker diaphragm
- furnace
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
Description
【発明の詳細な説明】 本発明は、窒化珪素（Ｓｉ。[Detailed description of the invention] The present invention uses silicon nitride (Si).
Ｎ、）にて形成されたスピーカ振動板の製造方法に関す
る。スピーカとして、良好な周波数特性を得るためには
その振動板の弾性率が高いこと及びロスが適当てあるこ
とが必要であるが、その一にヤング率が約３．９×１０
Ｈｋ９／イの窒化珪素を用いることが考えられている。The present invention relates to a method of manufacturing a speaker diaphragm formed by N.). In order to obtain good frequency characteristics as a speaker, it is necessary for the diaphragm to have a high elastic modulus and appropriate loss, and one of these is the Young's modulus of approximately 3.9×10
It has been considered to use Hk9/I silicon nitride.
最近、その製造方法として、所望の振動板形状に成形さ
れた母型を炉中に入れ、シリコンを含有したガス、窒素
を含有したガスを圧入し、炉内で気相反応を行なわしめ
、母型上に窒化珪素を沈積せしめて、母型より沈積物を
剥離し、振動板を形成する方法が提案されている。Recently, as a manufacturing method, a mother mold formed into the desired diaphragm shape is placed in a furnace, gas containing silicon and gas containing nitrogen are injected under pressure, a gas phase reaction is carried out in the furnace, and the mother mold is placed in a furnace. A method has been proposed in which a diaphragm is formed by depositing silicon nitride on a mold and peeling off the deposit from the mother mold.
然しながらこの方法は剥離に際し破損しやすい問題点が
ある。また、珪素粉末を所望の振動板形状にプレス成型
して加熱炉中て窒素ガスを反応させて窒化珪素のスピー
カ振動板を得る方法が考えられているが、実用的なスピ
ーカ振動板の厚さで粉末をプレス成型し、炉中に移動す
る工程及び離型時に於て破損しやすい問題点がある。且
つ、前記いずれの方法にても得られる振動板はＳｉ３Ｎ
４単一物質であり、ロスは極めて小さく、また比重が３
．１８と大きいので高い伝導音速（ＶＥ／ρ）を得るに
は不充分である。However, this method has the problem that it is easily damaged during peeling. In addition, a method to obtain a silicon nitride speaker diaphragm by press-molding silicon powder into a desired diaphragm shape and reacting with nitrogen gas in a heating furnace has been considered, but the practical thickness of a speaker diaphragm is There is a problem in that the powder is easily damaged during the process of press-molding the powder and moving it into the furnace and during demolding. Moreover, the diaphragm obtained by any of the above methods is Si3N.
4 Single substance, loss is extremely small, and specific gravity is 3.
．． 18, which is insufficient to obtain a high conduction sound velocity (VE/ρ).
更にまた実用スピーカの音圧放射能率（即ち振動系重量
）を得るためには一般的にはＳｉａＮ。単一体では２０
〜３０μ程度の薄いことが必要であり、スピーカの駆動
時に破損するなどの欠点があつた。本発明はこれらの欠
点のない振動板の製造方法を提案するものである。即ち
本発明は、珪素繊維を所望の振動板形状に抄造成形し、
炉の中で窒素ガスを反応させ珪素を窒化させてＳｉ３Ｎ
。Furthermore, in order to obtain the sound pressure radiation efficiency (that is, the weight of the vibration system) of a practical speaker, SiaN is generally used. 20 for a single body
It needs to be as thin as ~30 μm, which has the disadvantage of being damaged when driving the speaker. The present invention proposes a method for manufacturing a diaphragm that does not have these drawbacks. That is, the present invention involves forming silicon fiber into a desired diaphragm shape,
Nitrogen gas is reacted in a furnace to nitride silicon to form Si3N.
.
層を形成させて後にフェノール樹脂、メタアクリル酸エ
ステル等の合成樹脂を含浸して繊維の結着をより強化さ
せることを特徴とするスピーカ振動板の製造方法である
。以上の如き本発明方法によれば製造工程中に破損する
ことがなく、また本方法により製造される振動板は、高
剛性な繊維質振動板となりスピーカ″駆動時に破損する
おそれがなく、嵩比重が１．９〜２．６（ｙ／ｄ）とな
り、適度なロス（Ｔａｎσ■０．０２〜０．０８）を持
つ、軽量て、高剛性な振動板となる。This method of manufacturing a speaker diaphragm is characterized in that a layer is formed and then impregnated with a synthetic resin such as a phenol resin or a methacrylic acid ester to further strengthen the binding of fibers. According to the method of the present invention as described above, there will be no damage during the manufacturing process, and the diaphragm manufactured by this method will be a highly rigid fibrous diaphragm that will not be damaged when the speaker is driven, and will have a high bulk density. is 1.9 to 2.6 (y/d), resulting in a lightweight and highly rigid diaphragm with a moderate loss (Tanσ■0.02 to 0.08).
更にまた、窒化の度合を反応時間で制御するこ・とがで
きるので、振動板に所望の特性を持たせることもでき、
きわめて実用的である。Furthermore, since the degree of nitriding can be controlled by the reaction time, it is possible to give the diaphragm desired characteristics.
Extremely practical.
Claims (1)
で窒素ガスを反応させて、繊維全体又は繊維の表面を窒
化珪素とする工程及び窒化後の基体に合成樹脂を含浸す
る工程からなるスピーカ振動板の製造方法。1. A process consisting of a step of converting a substrate made of silicon fiber into the shape of a diaphragm by reacting it with nitrogen gas in a furnace to make the entire fiber or the surface of the fiber silicon nitride, and a step of impregnating the nitrided substrate with a synthetic resin. A method of manufacturing a speaker diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15512478A JPS6049400B2 (en) | 1978-12-14 | 1978-12-14 | Manufacturing method of speaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15512478A JPS6049400B2 (en) | 1978-12-14 | 1978-12-14 | Manufacturing method of speaker diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5580994A JPS5580994A (en) | 1980-06-18 |
| JPS6049400B2 true JPS6049400B2 (en) | 1985-11-01 |
Family
ID=15599075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15512478A Expired JPS6049400B2 (en) | 1978-12-14 | 1978-12-14 | Manufacturing method of speaker diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6049400B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132500A (en) * | 1983-12-20 | 1985-07-15 | Onkyo Corp | Diaphragm for electroacoustic transducer and method for manufacturing the same |
| JPH0250831A (en) * | 1988-08-12 | 1990-02-20 | Matsushita Electric Works Ltd | Laminated sheet |
-
1978
- 1978-12-14 JP JP15512478A patent/JPS6049400B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5580994A (en) | 1980-06-18 |
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