JPS5913498A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS5913498A JPS5913498A JP12357582A JP12357582A JPS5913498A JP S5913498 A JPS5913498 A JP S5913498A JP 12357582 A JP12357582 A JP 12357582A JP 12357582 A JP12357582 A JP 12357582A JP S5913498 A JPS5913498 A JP S5913498A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- speaker
- mica
- resin
- composite film
- 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
Description
【発明の詳細な説明】
産業上の利用分野
本発明はプラスチック、特にノーイドロキノン等のビス
フェノールと、4.4’−ジフルオロベンゾフェノン等
の2個のノ・ロゲン原子がオルト位又はパラ位のケトン
基により活性化されている芳香族ジ・・ライドよりなる
ポリエーテル微香族ケトン型樹脂又はポリエーテル芳香
族ケト/全主体とする樹脂を成形したスピーカ用振動板
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to plastics, particularly bisphenols such as nohydroquinone, and ketones such as 4,4'-difluorobenzophenone in which two norogen atoms are in the ortho or para position. The present invention relates to a speaker diaphragm molded from a polyether slightly aromatic ketone type resin made of an aromatic di-ride activated by a group or a resin consisting entirely of polyether aromatic keto.
従来例の構成とその問題点
従来、プラスチックからなるスピーカ用振動板としてポ
リエチレンテレフタレートフィルムが使用されてきた。Conventional Structure and Problems Conventionally, polyethylene terephthalate film has been used as a speaker diaphragm made of plastic.
しかし、ポリエチレンテレフタレートは弾性率が小さく
、フルレンジのスピーカの場合には高域共振周波数fH
が低く、高音再生は必ずしも良好ではない問題があった
。However, polyethylene terephthalate has a small elastic modulus, and in the case of a full-range speaker, the high resonant frequency fH
There was a problem that the treble reproduction was not necessarily good.
発明の目的
本発明は上記欠点全解消するものであり、高域共振周波
数fHが高くその周波数特性の憂れたスピーカ用振動板
を提供することを目的とするものである。OBJECTS OF THE INVENTION The present invention is intended to eliminate all of the above-mentioned drawbacks, and it is an object of the present invention to provide a diaphragm for a speaker that has a high high-frequency resonance frequency fH and poor frequency characteristics.
発明の構成
本発明のスピーカ用振動板はハイドロキノン等のビスフ
ェノールと、4,4′−ジフルオロベンゾフェノン等の
2個のハロゲン原子がオルト位又はパラ位のケトン基に
より活性化されている芳香族シバライドよりなるポリエ
ーテル芳香族ケトン型樹脂又はポリエーテル芳香族ケト
ンを主体とする樹脂にマスコバイト(白雲母)、70ゴ
ノ(イト(金雲母)などのマイカを適度に複合した複合
フィルムを成形したものである。この複合フィルムは弾
性率が32.000−90.000 (Kg/ cm
) t?あり、ポリエチレンテレフタレートフィルムの
19.000(Kti/ crl )と比べると非常に
大きい。捷た、上記複合フィルム全成形したスピーカ用
振動板は弾性率が高いため、高域共振周波数f)1が高
く高音まで再生用能となる。また、上記複合フィルムの
内部損失は0.015〜0.026であり、ポリエチレ
ンテレフタレートフィルムの0.005と比−妬と3〜
5倍大きいため、これを成形した振動板は周波数特性上
のいわゆるパあばれ°″が小さく、びずみも少ない。ま
た、上記複合フィルムは熱変形温度が1600近辺にあ
り曖れた耐熱性を示す。しかも耐燃性試験では自己消火
性であるためこの複合フィルムを成形した振動板は高温
に耐え、難燃性を有する。従って耐熱性、耐燃性が要求
されるスピーカ用としては最適の振動板を得ることがで
きる。Structure of the Invention The speaker diaphragm of the present invention is made of bisphenols such as hydroquinone and aromatic cybarides such as 4,4'-difluorobenzophenone in which two halogen atoms are activated by a ketone group at the ortho or para position. A composite film is formed by combining polyether aromatic ketone type resin or resin mainly composed of polyether aromatic ketone with a moderate amount of mica such as muscovite (muscovite) and phlogopite (phlogopite). This composite film has an elastic modulus of 32.000-90.000 (Kg/cm
) t? This is extremely large compared to 19,000 (Kti/crl) for polyethylene terephthalate film. Since the speaker diaphragm completely formed from the twisted composite film has a high elastic modulus, the high-frequency resonance frequency f)1 is high, and the diaphragm can be used to reproduce high-pitched sounds. Further, the internal loss of the composite film is 0.015 to 0.026, which is compared to 0.005 of the polyethylene terephthalate film.
Because it is five times larger, a diaphragm made of this material has less so-called power fluctuation in frequency characteristics and less distortion.The above composite film also has a heat distortion temperature of around 1600, and exhibits vague heat resistance. Moreover, in flame resistance tests, the diaphragm molded with this composite film is self-extinguishing, so it can withstand high temperatures and is flame retardant.Therefore, it is the best diaphragm for speakers that require heat resistance and flame resistance. Obtainable.
実施例の説明
〔実施例1 〕
振動板成形用樹脂として下記に示した構造を持つ、ハイ
ドロキノンと4.4′−ジハロベンゾフエとからなるポ
リエーテル芳香族ケトン型樹脂を用い、又、マイカはフ
ロゴバイト(金雲母)系マイカ、分子式KM93(AI
Si301o)・(○H)2を用いた。上記樹脂に重量
比30%のマイカを複合した複合フィルムノ弾性率は5
1 、000 (Kg/ ’aI) 、内部損失は0.
018であっ九上記複合フィルムは圧空成形法により振
動板の成形を行い、直径40胴。Description of Examples [Example 1] A polyether aromatic ketone type resin consisting of hydroquinone and 4,4'-dihalobenzophene having the structure shown below was used as the resin for molding the diaphragm, and mica was phlogovite ( Phlogopite) based mica, molecular formula KM93 (AI
Si301o).(○H)2 was used. The elastic modulus of a composite film made by combining the above resin with mica at a weight ratio of 30% is 5.
1,000 (Kg/'aI), internal loss is 0.
018 and 9 The above composite film was molded into a diaphragm using a pressure forming method, and the diameter was 40 mm.
厚さ80μmのコーン型振動板を得た。図のaはこの振
動板を用いたスピーカの音響特性、図のbは同じ直径と
厚みを持つポリエチレンテレフタレートフィルよりなる
振動板を用いた音響特性金示している。図から明らかな
ように本実施例の複合フィルム振動板を用いたスピーカ
は、弾性率が高いために高域共振周波数fHが高くなり
、高音再生が良好になっていることがわかる。しかも内
部損失が大きいため周波数特性上のいわゆる°あばれ゛
。A cone-shaped diaphragm with a thickness of 80 μm was obtained. Figure a shows the acoustic characteristics of a speaker using this diaphragm, and figure b shows the acoustic characteristics of a speaker using a diaphragm made of polyethylene terephthalate fill having the same diameter and thickness. As is clear from the figure, since the speaker using the composite film diaphragm of this example has a high elastic modulus, the high-frequency resonance frequency fH becomes high, and high-frequency sound reproduction is improved. Moreover, because the internal loss is large, the frequency characteristics are so-called "wavering."
が小さく周波数特性の滑れたスピーカが得られる。This results in a speaker with a small frequency response and smooth frequency characteristics.
〔実施例2〕
実施例1で示した樹脂に対しマイカとの重量Lヒを1.
o%にした複合フィルムの弾性率は32.000(Kr
/Cn)、内部損失は0.015であった。実施例1と
同様にして当該複合フィルムを振動板に成形したスピー
カは、ポリエチレンテレフタレートフィルムよりなる振
動板に比較して高音再生カニ良好で°あばれ”の少い周
波数特性に優れたものであった。[Example 2] The weight L of the resin shown in Example 1 and mica was reduced to 1.
o% of the composite film is 32.000 (Kr
/Cn), and the internal loss was 0.015. A speaker in which the composite film was molded into a diaphragm in the same manner as in Example 1 had better high-frequency sound reproduction and excellent frequency characteristics with less vibration than a diaphragm made of polyethylene terephthalate film. .
〔実施例3〕
実施例1に示した樹脂に対しマイカとの重量比を90係
にした複合フィルムの弾性率は90.000(Kq/
’ ) +内部損失は○、o25であった。実施例1
と同様にして、当該複合フィルム全振動板に成形したス
ピーカは、ポリエチレンテレフタレートフィルムよりな
る振動板に比較して高音再生カニ良好で、パあばれ″の
少ない周波数特性に唆れたものてあった。[Example 3] The elastic modulus of a composite film prepared by setting the weight ratio of mica to the resin shown in Example 1 to 90 parts was 90.000 (Kq/
') + Internal loss was ○, o25. Example 1
Similarly, the speaker molded with the entire composite film diaphragm had better high-frequency sound reproduction than a diaphragm made of polyethylene terephthalate film, which was attributed to its frequency characteristics with less ``fluttering''.
発明の効果
以上のように本発明によればポリエーテル芳香族ケトン
型樹脂にマイカを複合した複合フィルムを用いることに
より、周波数特性の陵れたスピーカ用振動板が得られる
利点を有する。Effects of the Invention As described above, according to the present invention, by using a composite film in which mica is combined with a polyether aromatic ketone type resin, there is an advantage that a speaker diaphragm with smooth frequency characteristics can be obtained.
図は本発明のスピーカ用振動板と従来のスピーカ用振動
板の音圧周波数特性の比較図である。The figure is a comparison diagram of the sound pressure frequency characteristics of the speaker diaphragm of the present invention and a conventional speaker diaphragm.
Claims (1)
フルオロペンゾフエノン等の2個のノ10ゲン原子がオ
ルト位又はパラ位のケトン基により活性化されている芳
香族ジノ・ライドよりなるポリエーテル芳香族ケトン型
樹脂又はポリエーテル芳香族ケトンを主体とする樹脂に
、マスコバイト(白雲母)、フロゴバイト(金雲母)な
どのマイカを複合した複合フィルムを成形したことを特
徴とするスピーカ用振動板。A polyether aromatic compound consisting of a bisphenol such as hydroquinone and an aromatic dino-ride such as 4,4'-difluoropenzophenone in which two 10 atoms are activated by a ketone group at the ortho or para position. A speaker diaphragm characterized by molding a composite film in which mica such as muscovite (muscovite) and phlogovite (phlogopite) is combined with a resin mainly composed of ketone type resin or polyether aromatic ketone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12357582A JPS5913498A (en) | 1982-07-14 | 1982-07-14 | Diaphragm for speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12357582A JPS5913498A (en) | 1982-07-14 | 1982-07-14 | Diaphragm for speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5913498A true JPS5913498A (en) | 1984-01-24 |
Family
ID=14863971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12357582A Pending JPS5913498A (en) | 1982-07-14 | 1982-07-14 | Diaphragm for speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5913498A (en) |
-
1982
- 1982-07-14 JP JP12357582A patent/JPS5913498A/en active Pending
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