JPS63245098A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS63245098A JPS63245098A JP7774887A JP7774887A JPS63245098A JP S63245098 A JPS63245098 A JP S63245098A JP 7774887 A JP7774887 A JP 7774887A JP 7774887 A JP7774887 A JP 7774887A JP S63245098 A JPS63245098 A JP S63245098A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- urushiol
- speaker
- pulp
- phenol derivative
- 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.)
- Granted
Links
- RMTXUPIIESNLPW-UHFFFAOYSA-N 1,2-dihydroxy-3-(pentadeca-8,11-dienyl)benzene Natural products CCCC=CCC=CCCCCCCCC1=CC=CC(O)=C1O RMTXUPIIESNLPW-UHFFFAOYSA-N 0.000 claims abstract description 12
- QARRXYBJLBIVAK-UEMSJJPVSA-N 3-[(8e,11e)-pentadeca-8,11-dienyl]benzene-1,2-diol;3-[(8e,11e)-pentadeca-8,11,14-trienyl]benzene-1,2-diol;3-[(8e,11e,13e)-pentadeca-8,11,13-trienyl]benzene-1,2-diol;3-[(e)-pentadec-8-enyl]benzene-1,2-diol;3-pentadecylbenzene-1,2-diol Chemical compound CCCCCCCCCCCCCCCC1=CC=CC(O)=C1O.CCCCCC\C=C\CCCCCCCC1=CC=CC(O)=C1O.CCC\C=C\C\C=C\CCCCCCCC1=CC=CC(O)=C1O.C\C=C\C=C\C\C=C\CCCCCCCC1=CC=CC(O)=C1O.OC1=CC=CC(CCCCCCC\C=C\C\C=C\CC=C)=C1O QARRXYBJLBIVAK-UEMSJJPVSA-N 0.000 claims abstract description 12
- IYROWZYPEIMDDN-UHFFFAOYSA-N 3-n-pentadec-8,11,13-trienyl catechol Natural products CC=CC=CCC=CCCCCCCCC1=CC=CC(O)=C1O IYROWZYPEIMDDN-UHFFFAOYSA-N 0.000 claims abstract description 12
- DQTMTQZSOJMZSF-UHFFFAOYSA-N urushiol Natural products CCCCCCCCCCCCCCCC1=CC=CC(O)=C1O DQTMTQZSOJMZSF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 150000002989 phenols Chemical class 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 239000002655 kraft paper Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は音響出力機器等に用いられるスピーカ用振動板
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker diaphragm used in acoustic output equipment and the like.
従来の技術
近年、カセットテープレコーダ、マイクロカセットテー
プレコーダ、ハイファイステレオ業界においては音響出
力機器としてのスピーカの音響特性においても、従来よ
りもさらに出力音圧、歪み率、平坦性に優れたスピーカ
が望まれており、音響特性を左右するスピーカ用振動板
はますます重要視されている。Conventional technology In recent years, in the cassette tape recorder, micro cassette tape recorder, and high-fidelity stereo industries, there has been a demand for speakers with better output sound pressure, distortion rate, and flatness than before in terms of the acoustic characteristics of speakers used as audio output equipment. Speaker diaphragms, which influence acoustic characteristics, are becoming increasingly important.
従来より、一般にスピーカは振動板、ボイスコイルボビ
ン、ボイスコイルなどの振動系と、マグネット、ポール
、プレート、ヨークよりなる磁気回路系（図示せず）よ
シなり、一様な磁場中の中にあるボイスコイルに音声電
流が流れると、ボイスコイルに上下方向の電磁力が発生
し、電流に応じて振動するが、この振動を正しく振動板
の振動に伝え音波として放射される（例えば、早坂寿雄
：音響工学入門、日刊工業新聞社）。Conventionally, speakers generally consist of a vibration system such as a diaphragm, voice coil bobbin, and voice coil, and a magnetic circuit system (not shown) consisting of magnets, poles, plates, and yokes, and are located in a uniform magnetic field. When an audio current flows through the voice coil, a vertical electromagnetic force is generated in the voice coil, causing it to vibrate in accordance with the current, but this vibration is correctly transmitted to the vibration of the diaphragm and radiated as a sound wave (for example, Toshio Hayasaka: Introduction to Acoustic Engineering, Nikkan Kogyo Shimbun).
発明が解決しようとする問題点
しかしながら、スピーカの振動板は使用する周波数帯域
にわたってピストン運動することが理想とされるが、振
動中に振動板が変形したり分割振動が生ずると音圧−周
波数特性、歪み率、位相特性等が劣化し、高忠実再生の
妨げとなる。また、従来の紙コーン振動板やプラスチッ
ク振動板は振動板材料のもつＥ／ｐｃただし、Ｅ：弾性
率、ρ：密度）が小さいため、高域共振周波数が低く、
スピーカが高域まで再生できないという欠点があったＯ
本発明は上記問題点に鑑み、振動中に振動板が変形した
り分割振動を生ぜず、高域共振周波数が高いスピーカ用
振動板を提供するものである。Problems to be Solved by the Invention However, it is ideal that the diaphragm of a speaker makes piston motion over the frequency band used, but if the diaphragm deforms during vibration or split vibration occurs, the sound pressure-frequency characteristics will deteriorate. , distortion rate, phase characteristics, etc. deteriorate, and high-fidelity reproduction is hindered. In addition, conventional paper cone diaphragms and plastic diaphragms have a low high-frequency resonance frequency because the diaphragm material has a low E/pc (E: elastic modulus, ρ: density).
In view of the above problem, the present invention provides a diaphragm for a speaker that does not deform or split vibration during vibration and has a high resonant frequency in the high range. It is something.
問題点を解決するための手段
この目的を達成するために本発明のスピーカ用振動板は
、フェノール誘導体であるウルシオールをパルプに含浸
した成形物からなっている。Means for Solving the Problems In order to achieve this object, the speaker diaphragm of the present invention is made of a molded product in which pulp is impregnated with urushiol, which is a phenol derivative.
作 用
本発明のスピーカ用振動板は、フェノール誘導体である
ウルシオールをパルプに含浸しているため、非常に弾性
率が大きく、振動板の曲げ剛性が非常に大きくなり、振
動中に振動板が変形したり分割共振が生じない。また、
基材として例えばクラフトパルプを用い、これに上述の
含浸剤を含浸させることにより、比弾性率Ｅ／ρ（但し
、Ｅ：弾性率、ρ：密度）が大きく、スピーカの再生帯
域がのび、優れた音圧“−周波数特性、歪み率、位相特
性を持つスピーカを得ることができる。Function: Since the speaker diaphragm of the present invention has pulp impregnated with urushiol, which is a phenol derivative, the modulus of elasticity is extremely high, and the flexural rigidity of the diaphragm is extremely large. No deformation or split resonance occurs. Also,
By using, for example, kraft pulp as the base material and impregnating it with the above-mentioned impregnating agent, the specific elastic modulus E/ρ (where E: elastic modulus, ρ: density) is large, and the reproduction band of the speaker is extended and excellent. It is possible to obtain a speaker having sound pressure-frequency characteristics, distortion rate, and phase characteristics.
さらに、この振動板はフェノール誘導体であるウルシオ
ールを含浸剤として用いているため、耐溶剤性、耐水性
、耐熱性に優れているため、非常に過酷な条件でのスピ
ーカの使用に耐えるものである。Furthermore, since this diaphragm uses urushiol, a phenol derivative, as an impregnating agent, it has excellent solvent resistance, water resistance, and heat resistance, so it can withstand use as a speaker under extremely harsh conditions. be.
実施例
以下、本発明の一実施例のスピーカ用振動板について説
明する。本発明の一実施例におけるスピーカ用振動板は
、フェノール誘導体であるウルシオールをパルプに含浸
した後、加熱した成形物からなっている。EXAMPLE A speaker diaphragm according to an example of the present invention will be described below. A speaker diaphragm according to an embodiment of the present invention is made of a molded product obtained by impregnating pulp with urushiol, which is a phenol derivative, and then heating the pulp.
この振動板の製造方法について述べると、まず、フェノ
ール誘導体であるウルシオールを目付け２６ｙ／ｒｒ？
、口径２８Ｉａｌのクラフトパルプを含浸した後、加熱
、硬化して、例えば目付け３ｏｙ／ｒｒ？のドーム状振
動板を形成する。Describing the manufacturing method of this diaphragm, first, urushiol, which is a phenol derivative, has a basis weight of 26y/rr?
After impregnating kraft pulp with a diameter of 28 Ial, it is heated and hardened to give a basis weight of, for example, 3 oy/rr? form a dome-shaped diaphragm.
以上のよ・う、に形成された振動板は、フェノール誘導
体であるウルシオールをパルプに含浸しているため、非
常に弾性率が大きく、振動板の曲げ剛性が非常に大きく
なり、振動中に振動板が変形したり分割共振が生ぜず良
好な音響特性が得られ、同じ形状のアルミニウム製ドー
ム型振動板と比較して歪み率を２３ｄＢ低下させること
ができる。The diaphragm formed in the above manner has a very high elastic modulus because the pulp is impregnated with urushiol, a phenol derivative, and the flexural rigidity of the diaphragm is extremely large. Good acoustic characteristics can be obtained without deforming the diaphragm or causing split resonance, and the distortion rate can be reduced by 23 dB compared to an aluminum dome-shaped diaphragm of the same shape.
また、高域共振周波数は２１ＫＨｚよシ３０ＫＨｚに上
昇させることができるとともに、出力音圧のピークディ
ップも±３ｄＢとアルミニウムの振動板と比較して、約
±３ｄＢ低下させることができ、優れた音圧−周波数特
性、歪み率、位相特性を持つスピーカを実現できる。さ
らに、ウルシオールを含浸剤として用いているため、耐
溶剤性、耐水性に優れ、過酷な条件下でのスピーカの使
用に耐えることもできる。In addition, the high-frequency resonance frequency can be raised from 21KHz to 30KHz, and the peak dip of the output sound pressure can also be lowered by about ±3dB, which is ±3dB compared to an aluminum diaphragm, resulting in excellent sound. A speaker with pressure-frequency characteristics, distortion rate, and phase characteristics can be realized. Furthermore, since urushiol is used as an impregnating agent, it has excellent solvent resistance and water resistance, and can withstand the use of speakers under harsh conditions.
尚、本実施例において、振動板の形状はドーム状のみな
らず、コーン形でも同様の効果が得られるものであシ１
、さらに、サンドイッチ構造の平板振動板の表面材とし
て用いてもいいものである。In this example, the shape of the diaphragm is not limited to a dome shape, but a cone shape can also provide the same effect.
Furthermore, it may be used as a surface material for a flat plate diaphragm having a sandwich structure.
発明の効果
以上のように本発明は、フェノール誘導体であるウルシ
オールをパルプに含浸した成形物を撮動板として用いる
ことにより、歪み率が小さく、高域共振周波数が高く、
また音響出力の大きなスピーカを得ることができ、良好
な音響特性を有する優れたスピーカを実現できるもので
ある。Effects of the Invention As described above, the present invention uses a molded product obtained by impregnating pulp with urushiol, which is a phenol derivative, as a photographing plate, so that the distortion rate is small, the high-frequency resonance frequency is high, and
Further, it is possible to obtain a speaker with a large acoustic output, and an excellent speaker with good acoustic characteristics can be realized.
Claims (1)
に含浸した成形物からなるスピーカ用振動板。A speaker diaphragm made of a molded product made of pulp impregnated with urushiol, a phenol derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7774887A JPH0667029B2 (en) | 1987-03-31 | 1987-03-31 | Vibration plate for speakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7774887A JPH0667029B2 (en) | 1987-03-31 | 1987-03-31 | Vibration plate for speakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63245098A true JPS63245098A (en) | 1988-10-12 |
| JPH0667029B2 JPH0667029B2 (en) | 1994-08-24 |
Family
ID=13642536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7774887A Expired - Fee Related JPH0667029B2 (en) | 1987-03-31 | 1987-03-31 | Vibration plate for speakers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667029B2 (en) |
-
1987
- 1987-03-31 JP JP7774887A patent/JPH0667029B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0667029B2 (en) | 1994-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |