JPS61131699A - Diaphragm for loudspeaker and its production - Google Patents
Diaphragm for loudspeaker and its productionInfo
- Publication number
- JPS61131699A JPS61131699A JP25163584A JP25163584A JPS61131699A JP S61131699 A JPS61131699 A JP S61131699A JP 25163584 A JP25163584 A JP 25163584A JP 25163584 A JP25163584 A JP 25163584A JP S61131699 A JPS61131699 A JP S61131699A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- fiber
- layer
- base material
- honeycomb core
- 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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
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】
「発明の目的」
(産業上の利用分野)
本発明はスピーカ用振動板とその振動板を製造する方法
に係り、特に、高弾性で高強度を有し。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to a diaphragm for a speaker and a method for manufacturing the diaphragm, particularly a diaphragm having high elasticity and high strength.
耐熱性に優れているのは勿論、歪が少なくピストンモー
ション帯域を拡大できてウーハ−用として最適な振動板
とそのような振動板を簡単且つ的確に製造することがで
きる製造法に関するものである。The present invention relates to a diaphragm that is ideal for use in woofers as it not only has excellent heat resistance but also has low distortion and can expand the piston motion band, and a manufacturing method that can easily and accurately manufacture such a diaphragm. .
(従来の技術)
従来の一殺的なスピーカ用振動板はパルプコーンや樹脂
コーンが使用されているが、これらの振動板は概して剛
性が不足し、耐熱性が低い等の欠点がある。(Prior Art) Pulp cones and resin cones are used as conventional loudspeaker diaphragms, but these diaphragms generally have drawbacks such as insufficient rigidity and low heat resistance.
また、上記したパルプコーンの欠点を解消して振動板の
剛性を高めるために、炭素繊維による基布の表面に合成
樹脂層を形成した振動板も提案されている。Furthermore, in order to eliminate the above-mentioned drawbacks of the pulp cone and increase the rigidity of the diaphragm, a diaphragm in which a synthetic resin layer is formed on the surface of a base cloth made of carbon fibers has also been proposed.
(発明が解決しようとする問題点)
上記した従来の炭素繊維を主材料とする振動板において
は表面樹脂層のピンホールやボイド等によって表面安定
性がなく、殊にピンホールがあると空気負荷がかかり難
くなって3次歪の原因となる。(Problems to be Solved by the Invention) The conventional diaphragm mainly made of carbon fiber described above lacks surface stability due to pinholes and voids in the surface resin layer, and especially when there are pinholes, air load becomes difficult to apply, causing third-order distortion.
また、振動板基材と他の部材との複合体からなる複層振
動板も各種提案されているが、振動板基材と他の部材と
の結合手段や表面層の形成手段等は振動板として優れた
特性を得ようとする場合に極めて重要となる。In addition, various multilayer diaphragms have been proposed that are made of composites of a diaphragm base material and other members, but the means for connecting the diaphragm base material and other members, the means for forming the surface layer, etc. This is extremely important when trying to obtain excellent characteristics as
本発明の第1の目的は、高弾性、高強度を有し、耐候性
、耐熱性において極めて優れているのは勿論1表面安定
性を備えていて歪が少なくピストンモーション帯域を著
しく改善することができ2 るスピー
カ用振動板を提供することにある。The first object of the present invention is to provide a piston with high elasticity, high strength, excellent weather resistance and heat resistance, and also surface stability with little distortion and significantly improve the piston motion band. The object of the present invention is to provide a diaphragm for a speaker that can perform the following functions.
本発明の他の目的は、上記したような振動板を簡単に製
造でき、特に振動板成型時において表面にアセテートセ
ルロースによるフィルム層を的確に形成でき、金型との
離型性が良好なスピーカ用振動板の製造法を提供するこ
とにある。Another object of the present invention is to produce a speaker which can easily produce the above-mentioned diaphragm, can accurately form a film layer of cellulose acetate on the surface during molding of the diaphragm, and has good mold releasability. An object of the present invention is to provide a method for manufacturing a diaphragm for use in automobiles.
「発明の構成」
(問題点を解決するための手段)
本発明に係るスピーカ用振動板は、ハニカムコアによる
振動板基材の少なくとも表面側に高弾性Jl雑による繊
維層を設け、該繊!!層の表面にはアセテートセルロー
スによるフィルム層を形成したものである。"Structure of the Invention" (Means for Solving Problems) A speaker diaphragm according to the present invention includes a fibrous layer made of high elastic Jl material provided on at least the surface side of a diaphragm base material made of a honeycomb core. ! A film layer made of cellulose acetate is formed on the surface of the layer.
そして裏面側に設けられるべき繊!!暦を表面側に設け
られるべき繊維層とは異種の高弾性繊維とすることもで
き、また、振動板基材の裏面側には紙質層を設けて該紙
質層の表面にアセトセルロースによるフィルム層を形成
することもできる。And the fibers that should be placed on the back side! ! The calendar may be made of a different type of high elastic fiber from the fiber layer to be provided on the front side.Also, a paper layer may be provided on the back side of the diaphragm base material, and a film layer made of acetocellulose may be placed on the surface of the paper layer. can also be formed.
本発明に係るスピーカ用振動板の製造法は、炭素繊維等
の高弾性W&維による織布にエポキシ系樹脂等の熱硬化
性樹脂を含浸してこれとハニカムコアによる振動板基材
とを加熱加圧することにより構コ体を得、この構造体を
アセテートセルロース溶液を塗布した振動板成型用金型
で加熱加圧成型して振動板を得るものである。The method for manufacturing a speaker diaphragm according to the present invention involves impregnating a woven fabric made of highly elastic W&fibers such as carbon fiber with a thermosetting resin such as an epoxy resin, and heating this and a diaphragm base material made of a honeycomb core. A structural body is obtained by applying pressure, and a diaphragm is obtained by molding this structural body under heating and pressure using a diaphragm molding die coated with an acetate cellulose solution.
(作用)
本発明に係るスピーカ用振動板は、l\ニカムコアによ
る振動板基材と高弾性繊維による繊維層とによる構造体
をなし、高弾性、高剛性を有すると共にその繊維層の表
面にはアセテートセルロースによるフィルム層が形成さ
れているから耐候性、耐熱性、耐溶剤性を有するのは勿
論、表面安定性を有し、ピンホールやボイド等によって
空気負荷がかかり難くなったりこれに伴なう3次歪が発
生したりすることはない。(Function) The speaker diaphragm according to the present invention has a structure consisting of a diaphragm base material made of Nicum core and a fiber layer made of high elastic fibers, and has high elasticity and high rigidity, and the surface of the fiber layer has Since the film layer is made of cellulose acetate, it not only has weather resistance, heat resistance, and solvent resistance, but also has surface stability, which makes it difficult to apply air loads due to pinholes, voids, etc. Third-order distortion does not occur.
また1本発明に係るスピーカ用振動板は、炭素繊維等の
高弾性繊維による織布にエポキシ系樹脂等の熱硬化性樹
脂を含浸してこれをハニカムコアによる振動板基材面に
配置し、これをオートクレーブ法やコンプレッション法
等により加熱加圧すると上記M&維による織布は硬化す
ると共に上記熱硬化性樹脂の自回融着性によりハニカム
コアと高弾性繊維による織布とが的確に接着して両者に
よる構造体を得ることができる。In addition, the speaker diaphragm according to the present invention includes a woven fabric made of highly elastic fibers such as carbon fiber impregnated with a thermosetting resin such as an epoxy resin, and this is placed on a diaphragm base material surface made of a honeycomb core. When this is heated and pressurized by an autoclave method or compression method, the woven fabric made of M&fibers is cured, and the honeycomb core and the woven fabric made of high elastic fibers are accurately bonded together due to the self-fusing property of the thermosetting resin. You can obtain a structure based on both.
次にこの構造体をアセテートセルロース溶液を塗布した
振動板成型用金型で加熱加圧することにより振動板を成
型するとアセテートセルロース薄膜が形成されて高弾性
繊維基布上に融着する。Next, this structure is heated and pressurized with a diaphragm molding die coated with an acetate cellulose solution to form a diaphragm, and an acetate cellulose thin film is formed and fused onto the high elastic fiber base fabric.
このアセテートセルロースのフィルムは金型に付着せず
離型性に優れているから成型性は極めて良好となり、ま
た、ピンホール等はなく繊維基布表面の改質にも有効で
あり、耐候性、耐熱性及び耐溶剤性において優れたもの
となる。This acetate cellulose film does not adhere to the mold and has excellent mold releasability, so it has extremely good moldability.It also has no pinholes and is effective in modifying the surface of the fiber base, and has excellent weather resistance and It has excellent heat resistance and solvent resistance.
(実施例)
本発明に係るスピーカ用振動板の実施例をその製造法と
共に図面に基づいて説明する。(Example) An example of a speaker diaphragm according to the present invention will be described based on the drawings together with a manufacturing method thereof.
図中、1は振動板全体を示し、ハニカムコアによる振動
板基材2の少なくとも表面側には高弾性繊維による繊維
層3が設けられ、該mta層3の表面にはアセテートセ
ルロースによるフィルムR4が形成されている。In the figure, reference numeral 1 indicates the entire diaphragm, and a fibrous layer 3 made of high elastic fibers is provided at least on the surface side of a diaphragm base material 2 made of a honeycomb core, and a film R4 made of acetate cellulose is provided on the surface of the mta layer 3. It is formed.
第1図は上記繊維層3及びフィルム層4を振動版基材2
の片面(表面側)に設けた例を示し、第2図は表裏両面
に設けた例を示しているが、第3図は裏面側に紙層5を
設けると共にその表面にアセテートセルロースによるフ
ィルム層6を形成した例が示されている。7はエツジ部
材である。なお、図示例はコーン振動板に実施した例を
示しているが、これが平面振動板であってもよいことは
勿論である。FIG. 1 shows the above fiber layer 3 and film layer 4 on a diaphragm base material 2.
Fig. 2 shows an example in which the paper layer 5 is provided on one side (front side), and Fig. 3 shows an example in which the paper layer 5 is provided on the back side, and a film layer made of cellulose acetate is provided on the surface. 6 is shown. 7 is an edge member. Note that although the illustrated example shows an example in which a cone diaphragm is used, it goes without saying that this may be a plane diaphragm.
ハニカム材としては軽量であることから紙ハニカムコア
が有効である。Paper honeycomb cores are effective as honeycomb materials because they are lightweight.
第2図の構成例において裏面側の繊Ia暦3を表面側の
繊維と同一のものとしてもよく、或いはこれと異なる他
の高弾性繊維による織布や不織布としてもよいが、いず
れにしてもピンホール等が出易いのでその表面に上記フ
ィルム層6を形成することが望ましい。In the configuration example shown in FIG. 2, the fiber Ia calendar 3 on the back side may be the same as the fiber on the front side, or may be a woven fabric or non-woven fabric made of other high elastic fibers different from this, but in any case, Since pinholes and the like are likely to appear, it is desirable to form the film layer 6 on the surface thereof.
゛ 次に製造例を述べるに、先ず、−例として炭素繊維
による織布にエポキシ系樹脂を含浸し、これをオートク
レーブ法又はコンプレッション法により、面圧1.0〜
5 Kg/ Cm’、温度130℃で30分間加熱加圧
する。これにより上記繊維による織布は硬化すると共に
上記エポキシ系樹脂の自回融着性でハニカムコアと炭素
繊維による織布とが的確に接着して両者による構造体を
得ることができる。゛ Next, to describe a manufacturing example, first, as an example, a woven fabric made of carbon fiber is impregnated with epoxy resin, and this is heated to a surface pressure of 1.0 to 1.0 by autoclave method or compression method.
Heat and pressurize at 5 Kg/Cm' and a temperature of 130°C for 30 minutes. As a result, the woven fabric made of the fibers is cured, and the honeycomb core and the woven fabric made of carbon fibers are accurately bonded to each other by the self-fusing property of the epoxy resin, so that a structure made of both can be obtained.
次にこの構造体をアセテートセルロース溶液を塗布した
振動板成型用金型で上記と同様の条件、−即ち、面圧1
.0−5にg / crn’、温度130℃で30分間
加熱加圧して振動板を成型するとアセテートセルロース
薄膜が形成されて炭素繊維基布上に融着する。Next, this structure was placed in a diaphragm molding die coated with an acetate cellulose solution under the same conditions as above - i.e., a surface pressure of 1
.. When a diaphragm is molded by heating and pressing at a temperature of 0-5 g/crn' and a temperature of 130° C. for 30 minutes, an acetate cellulose thin film is formed and fused onto the carbon fiber base fabric.
「発明の効果」
本発明に係るスピーカ用振動板によれば、ハニカムコア
による振動板基材と高弾性繊維による繊維層とによる構
造体をなし、高弾性、高剛性を有すると共にその繊#I
層の表面にはアセテートセルロースによるフィルム層が
形成されているから耐候性、耐熱性、耐溶剤性を有する
のは勿論、表面安定性を有し、ピンホールやボイド等に
よって空気負荷がかかり難くなったりこれに伴なう3次
歪が発生したりすることはない、このためピストンモー
ション帯域を著しく広げることができ、優れた特性のス
ピーカ用振動板とすることができる。"Effects of the Invention" According to the speaker diaphragm according to the present invention, it has a structure consisting of a diaphragm base material made of a honeycomb core and a fiber layer made of high elastic fibers, and has high elasticity and high rigidity, and the fiber #I
Since a film layer made of cellulose acetate is formed on the surface of the layer, it not only has weather resistance, heat resistance, and solvent resistance, but also has surface stability and is less susceptible to air loads due to pinholes and voids. Therefore, the piston motion band can be significantly expanded, and a speaker diaphragm with excellent characteristics can be obtained.
また、本発明に係るスピーカ用振動板は、炭素繊維等の
高弾性繊維による織布にエポキシ系樹脂等の熱硬化性樹
脂を含浸してこれをハニカムコアによる振動板基材面に
配置し、これを加熱加圧すると上記繊維による織布は硬
化すると共に上記熱硬化性樹脂の自回融着性によりハニ
カムコアと高弾性繊維による織布とが的確に接着して両
者による構造体を得ることができ、次にこの構造体をア
セテートセルロース溶液を塗布した振動板成型用金型で
加熱加圧して振動板を成型するとアセテートセルロース
薄膜が形成されて高弾性繊維基布上に融着し、簡単且つ
的確にコーティングすることができる。Further, the speaker diaphragm according to the present invention includes a woven fabric made of highly elastic fibers such as carbon fiber impregnated with a thermosetting resin such as an epoxy resin, and placed on a diaphragm base material surface made of a honeycomb core. When this is heated and pressurized, the woven fabric made of the fibers is cured, and the honeycomb core and the woven fabric made of high elastic fibers are accurately bonded together due to the self-fusing property of the thermosetting resin, thereby obtaining a structure made of both. This structure is then heated and pressurized in a diaphragm molding mold coated with an acetate cellulose solution to form a diaphragm.A thin film of acetate cellulose is formed and fused onto the high elastic fiber base fabric, making it easy to mold. Moreover, it can be coated accurately.
このアセテートセルロースのフィルムは金型に付着せず
離型性に優れているから成型性は極めて良好となり、ま
た、ピンホール等はなく繊維基布表面の改質にも有効で
あり、耐候性、耐熱性及び耐溶剤性において優れたもの
であるから、特性的に優れたスピーカ用振動板を簡単に
製造することができる。This acetate cellulose film does not adhere to the mold and has excellent mold releasability, so it has extremely good moldability.It also has no pinholes and is effective in modifying the surface of the fiber base, and has excellent weather resistance and Since it has excellent heat resistance and solvent resistance, it is possible to easily manufacture a speaker diaphragm with excellent characteristics.
図面は本発明に係るスピーカ用振動板の実施例を示し、
第1図は繊#i層及びフィルム層を振動板基材の片面(
表面側)に設けた例を示す断面図。
第2図は表裏両面に設けた例を示す断面図、第3図は裏
面側に紙屑を設けると共にその表面にアセテートセルロ
ースによるフィルム層を形成した例を示す断面図である
。
l:スピーカ用振動板全体、2:振動板基材3:繊mN
、4:フイルム暦、5:紙層、B:フィルム層 。The drawings show an example of a speaker diaphragm according to the present invention,
Figure 1 shows the fiber #i layer and film layer on one side of the diaphragm base material (
FIG. FIG. 2 is a sectional view showing an example in which paper scraps are provided on both the front and back sides, and FIG. 3 is a sectional view showing an example in which paper waste is provided on the back side and a film layer of cellulose acetate is formed on the surface thereof. l: entire speaker diaphragm, 2: diaphragm base material 3: fiber mN
, 4: Film layer, 5: Paper layer, B: Film layer.
Claims (1)
には高弾性繊維による繊維層が設けられ、該繊維層の表
面にはアセテートセルロースによるフィルム層が形成さ
れていることを特徴とするスピーカ用振動板。 2、裏面側に設けられるべき繊維層が表面側に設けられ
るべき繊維層とは異種の高弾性繊維であることを特徴と
する特許請求の範囲第1項記載のスピーカ用振動板。 3 振動板基材の裏面側には紙質層が設けられ、該紙質
層の表面にアセトセルロースによるフィルム層が形成さ
れていることを特徴とする特許請求の範囲第1項記載の
スピーカ用振動板。 4、炭素繊維等の高弾性繊維による織布にエポキシ系樹
脂等の熱硬化性樹脂を含浸してこれとハニカムコアによ
る振動板基材とを加熱加圧することにより構造体を得、
この構造体をアセテートセルロース溶液を塗布した振動
板成型用金型で加熱加圧成型することを特徴とするスピ
ーカ用振動板の製造法。[Claims] 1. A fiber layer made of high elastic fibers is provided on at least the surface side of the diaphragm base material made of a honeycomb core, and a film layer made of cellulose acetate is formed on the surface of the fiber layer. Features speaker diaphragm. 2. The speaker diaphragm according to claim 1, wherein the fiber layer to be provided on the back side is a different type of high elastic fiber from the fiber layer to be provided on the front side. 3. The speaker diaphragm according to claim 1, wherein a paper layer is provided on the back side of the diaphragm base material, and a film layer made of acetocellulose is formed on the surface of the paper layer. . 4. A structure is obtained by impregnating a woven fabric made of high elastic fibers such as carbon fibers with a thermosetting resin such as an epoxy resin and heating and pressurizing this and a diaphragm base material made of a honeycomb core.
A method for manufacturing a diaphragm for a speaker, which comprises heating and press-molding this structure using a diaphragm molding die coated with an acetate cellulose solution.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25163584A JPS61131699A (en) | 1984-11-30 | 1984-11-30 | Diaphragm for loudspeaker and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25163584A JPS61131699A (en) | 1984-11-30 | 1984-11-30 | Diaphragm for loudspeaker and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61131699A true JPS61131699A (en) | 1986-06-19 |
Family
ID=17225751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25163584A Pending JPS61131699A (en) | 1984-11-30 | 1984-11-30 | Diaphragm for loudspeaker and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61131699A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06208386A (en) * | 1992-11-13 | 1994-07-26 | Carl Freudenberg:Fa | Sound-absorbing member |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114577A (en) * | 1978-02-28 | 1979-09-06 | Kohjin Co Ltd | Release paper for decorative laminated sheet |
JPS55147098A (en) * | 1979-05-02 | 1980-11-15 | Mitsubishi Electric Corp | Manufacture of diaphragm plate for speaker |
-
1984
- 1984-11-30 JP JP25163584A patent/JPS61131699A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54114577A (en) * | 1978-02-28 | 1979-09-06 | Kohjin Co Ltd | Release paper for decorative laminated sheet |
JPS55147098A (en) * | 1979-05-02 | 1980-11-15 | Mitsubishi Electric Corp | Manufacture of diaphragm plate for speaker |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06208386A (en) * | 1992-11-13 | 1994-07-26 | Carl Freudenberg:Fa | Sound-absorbing member |
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