JPS62154998A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS62154998A JPS62154998A JP29292885A JP29292885A JPS62154998A JP S62154998 A JPS62154998 A JP S62154998A JP 29292885 A JP29292885 A JP 29292885A JP 29292885 A JP29292885 A JP 29292885A JP S62154998 A JPS62154998 A JP S62154998A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- heat resistance
- pps
- diaphragm
- composite body
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、録音ソースの性能を忠実に、ＰＩｆ生させ
るために軽量でヤン、グ率（以下Ｅという）が高く、共
振鋭度（以下Ｑという）が低く、かつ耐熱性に優れたス
ピーカー用振動板に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention is lightweight, has a high Young's modulus (hereinafter referred to as E), and has a high resonance sharpness (hereinafter referred to as E) in order to faithfully reproduce the performance of a recording source. This invention relates to a speaker diaphragm that has a low Q) and excellent heat resistance.
一般にスピーカーの振動板の素材には、音響物理特性と
して密度（以下ρという）が小さく、Ｅが高く、かつＱ
が低いものが要求される。ρが小さくてＥが高ければ、
駆動源からの駆動力を忠実に音波に変換でき、さらにＱ
が低いと高音域の共振周波数付近での音圧の急激な上昇
を抑えかつ立下がり特性を大きくする。一方、駆動源の
近傍は、駆動時に高温となるため耐熱性のある素材が望
まれる。In general, the material of a speaker's diaphragm has acoustic physical properties such as low density (hereinafter referred to as ρ), high E, and Q.
A low value is required. If ρ is small and E is high, then
The driving force from the driving source can be faithfully converted into sound waves, and the Q
When the value is low, a sudden rise in sound pressure near the resonant frequency in the high frequency range is suppressed and the fall characteristics are increased. On the other hand, the vicinity of the driving source becomes high temperature during driving, so a heat-resistant material is desired.
従来、ρが小さくＥが高い材料としてアルミニウム、チ
タン、ベリリウムのような金属が用いられているが、こ
れらの材料はＱが大きい問題がある。逆にＱが小さい材
料として、紙やｄ ＩＪプロピレンフィルム、タリエス
テルフィルムナトカ用イられているが、これらの材料で
はＥが低い問題がある。また、ゼリプロピレンフィルム
やポリエステルフィルムでは、カーステレオスピーカー
のような高い耐熱性を要求される用途への使用には難点
がある。Conventionally, metals such as aluminum, titanium, and beryllium have been used as materials with small ρ and high E, but these materials have a problem in that they have a large Q. On the other hand, paper, dIJ propylene film, and talester film are used as materials with low Q, but these materials have the problem of low E. Furthermore, jellypropylene films and polyester films have drawbacks in their use in applications that require high heat resistance, such as car stereo speakers.
そこで本発明は、録音ソースの性能を忠実に再生させる
ために、上述したようガスビーカー用振動板として要求
されるρが小さくＥが高く、またＱが低く、かつ耐熱性
に優れた素材を提供するために案出されたものである。Therefore, in order to faithfully reproduce the performance of the recording source, the present invention provides a material that has a small ρ, a high E, a low Q, and has excellent heat resistance, which are required for a gas beaker diaphragm as described above. It was devised to do so.
すなわち本発明は、ヒリフェニレンザルファイド（以下
ＰＰＳと略記する）とカーボンファイバーからなる複合
体でフィルムを成形してスピーカー用振動板としたもの
である。この複合体に用いられるＰＰＳとしては、例え
ば繰シ返し単位を有する（米国、ＰＨＩＬＬＩＰＳ Ｐ
ＥＴＲＯＬＥｔＪＭ社製）ものがある。この樹脂は、耐
熱性、耐湿耐薬品性、寸法安定性、難燃性及び成形性に
優れている。That is, the present invention provides a diaphragm for a speaker by molding a film from a composite of hyphenylene sulfide (hereinafter abbreviated as PPS) and carbon fiber. The PPS used in this complex includes, for example, a repeating unit (PHILLIPS PPS, USA).
(manufactured by ETROLETJM). This resin has excellent heat resistance, moisture resistance, chemical resistance, dimensional stability, flame retardancy, and moldability.
カーボンファイバーは、プリアクリロニトリル繊維から
製造されたハイモジヱラスタイゾ（引張弾性率３０ ｔ
ｏｎ ／ ｔｔａｎ以上）で平均繊維径が２０μｍ以下
のものが良く特に１０μｍ以下のものが適している。こ
の力〜ボンファイバーをＰＰＳに４０〜７０重量ノぐ一
セント添加することによすρが小さくＥが高く、またＱ
が低くかつ耐熱性に優れた素材を得ることができる。カ
ーボンファイバーの添加量が４０重量ノε−セント以下
では剛性が不足し７０重量Ａ−セント以上では成形性が
悪くなる。ＰＰＳにカーボンファイバーを添加する方法
としては２軸混練機や単軸混練機で行なう。混線条件の
設定としてカーボンファイバーの切断を極力抑えるよう
にする事によってより剛性の大きい材料になる。The carbon fiber is high modulus Tyzo (tensile modulus 30t) manufactured from preacrylonitrile fiber.
on/ttan or more) and the average fiber diameter is preferably 20 μm or less, particularly 10 μm or less. By adding 40 to 70 cents by weight of this force to PPS, ρ is small, E is high, and Q
It is possible to obtain a material with low heat resistance and excellent heat resistance. If the amount of carbon fiber added is less than 40 ε-cents by weight, the rigidity will be insufficient, and if the amount is more than 70 A-cents by weight, the moldability will be poor. Carbon fibers are added to PPS using a twin-screw kneader or a single-screw kneader. By setting the crosstalk conditions to minimize cutting of the carbon fiber, the material becomes more rigid.
以上で得られた素材をプレス成形や圧縮成形によって所
要の形状に成形してスピーカー用振動板を得る。The material obtained above is molded into a desired shape by press molding or compression molding to obtain a speaker diaphragm.
本発明による振動板は、金属に比較してρが小さく弾性
率と密度の比Ｅ／ρがアルミニウムと同レベルで、さら
にＱが小さいだめ、高音域まで分割振動を起こさず広く
再生でき、さらに共振周波数付近での音圧の急激な上昇
を抑えかつ立下がシ特性が良好である。またイリプロビ
ｌ／ンフィルムやぼりエステルフィルムに比較してＥ
／ ｐが極端に大きく、耐熱性（連続使用温度２００℃
以上）、寸法安定性、耐湿性が良好である。以上の理由
からこの振動板は、車載用のスピーカー用やコンノクト
ディスクプレーヤ等に使用される様な高音質スピーカー
用として最適である。The diaphragm according to the present invention has a smaller ρ than metal, and a ratio of elastic modulus to density E/ρ on the same level as aluminum, and also has a small Q, so it can reproduce a wide range of sounds up to the high frequency range without causing split vibration. It suppresses a sudden rise in sound pressure near the resonance frequency and has good fall characteristics. Also, compared to Iripropylene film and Bori ester film, E
/ p is extremely large and heat resistant (continuous use temperature 200℃
above), dimensional stability and moisture resistance are good. For the above reasons, this diaphragm is most suitable for high-quality sound speakers such as those used in car speakers and connoct disc players.
実施例（１）
実施例（２）
以上の割合で２軸混練機を用いて３００℃にて混練して
被合体を得て、これを３５０℃で１５０７、ｑＢ厚みの
フィルムにプレス成形してＥｌ ρ、及びＱの値を測定
した。Example (1) Example (2) The above ratios were kneaded at 300°C using a twin-screw kneader to obtain a composite, which was press-molded at 350°C into a film with a thickness of 1507 qB. The values of El ρ and Q were measured.
比較例として、アルミニウム１００７ａ及びポリプロピ
レンフィルム１５０μｍについて測定した結果を次表に
示す。As a comparative example, the results of measurements on aluminum 1007a and polypropylene film 150 μm are shown in the following table.
実施例（１）及び（２）とも弾性率と密度の比、Ｅ／ρ
においてアルミニウムと同程度であ＃）ビリプロピ１／
ンフイルムよシ極端に大きな値となっており、Ｑ値は、
アルミニウムに比較して非常に小さくなっている。In both Examples (1) and (2), the ratio of elastic modulus to density, E/ρ
The same level as that of aluminum)
The Q value is extremely large compared to other films, and the Q value is
It is very small compared to aluminum.
また、熱変形温度（ＡＳＴＭ Ｄ６４８ １８．６ Ｉ
ＬＣｇ／Ｊ荷重）を測定した結果、実施例はいずれも２
６０℃、ポリプロピレンは６０℃であった。In addition, heat distortion temperature (ASTM D648 18.6 I
As a result of measuring LCg/J load), all of the examples were 2
The temperature was 60°C, and the temperature of polypropylene was 60°C.
Claims (2)
ーからなる複合体で形成されたことを特徴とするスピー
カー用振動板。(1) A diaphragm for a speaker characterized by being formed of a composite material made of polyphenylene sulfide and carbon fiber.
ーがポリアクリロニトリル繊維から製造されたハイモジ
ュラタイプでポリフェニレンサルファイドに対して４０
〜７０重量％添加された複合体で形成されたことを特徴
とするスピーカー用振動板。(2) The carbon fiber according to claim 1 is a high modular type manufactured from polyacrylonitrile fiber and has a carbon fiber with a carbon fiber density of 40% compared to polyphenylene sulfide.
A diaphragm for a speaker, characterized in that it is formed of a composite material to which ~70% by weight is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29292885A JPS62154998A (en) | 1985-12-27 | 1985-12-27 | Diaphragm for speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29292885A JPS62154998A (en) | 1985-12-27 | 1985-12-27 | Diaphragm for speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62154998A true JPS62154998A (en) | 1987-07-09 |
Family
ID=17788220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29292885A Pending JPS62154998A (en) | 1985-12-27 | 1985-12-27 | Diaphragm for speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62154998A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100406257B1 (en) * | 2001-05-30 | 2003-11-14 | 주식회사 삼부커뮤닉스 | A Manufacturing Method of Condenser Microphone |
| WO2007049571A1 (en) * | 2005-10-27 | 2007-05-03 | Toray Industries, Inc. | Polyarylene sulfide film |
-
1985
- 1985-12-27 JP JP29292885A patent/JPS62154998A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100406257B1 (en) * | 2001-05-30 | 2003-11-14 | 주식회사 삼부커뮤닉스 | A Manufacturing Method of Condenser Microphone |
| WO2007049571A1 (en) * | 2005-10-27 | 2007-05-03 | Toray Industries, Inc. | Polyarylene sulfide film |
| US8742061B2 (en) | 2005-10-27 | 2014-06-03 | Toray Industries, Inc. | Polyarylene sulfide film |
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