JPS5875398A - Loud speaker diaphragm - Google Patents
Loud speaker diaphragmInfo
- Publication number
- JPS5875398A JPS5875398A JP17426381A JP17426381A JPS5875398A JP S5875398 A JPS5875398 A JP S5875398A JP 17426381 A JP17426381 A JP 17426381A JP 17426381 A JP17426381 A JP 17426381A JP S5875398 A JPS5875398 A JP S5875398A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- mica
- heat resistance
- speaker diaphragm
- diaphragm
- 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】
本発明は比弾性率に優れ、耐湿性、耐熱性に優れたスピ
ーカ用振動板に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker diaphragm having an excellent specific modulus of elasticity, moisture resistance, and heat resistance.
従来のスピーカ用振動板としては、天然パルプを抄造し
て得られたものを利用しているが、弾性率が低く耐湿性
に劣り、湿度変化によって音質が変化するなど満足でき
るものでなかった。Conventional speaker diaphragms have been made using natural pulp paper, but these have been unsatisfactory as they have low elastic modulus, poor moisture resistance, and change in sound quality due to changes in humidity.
このようなことから、炭素繊維とエポキシ樹脂との複合
振動板、集成マイカと合成樹脂から得られる振動板も開
発されて一部実用化されているものもあるが、比弾性率
が高く優れた物性を有し）いるものの脆弱性があり大出
力用スピーカに用いた場合には破損してしまうなど信頼
性に欠けるとともに厚みが不均一になりやすく特性がば
らつくといった問題があった。For this reason, composite diaphragms made of carbon fiber and epoxy resin, and diaphragms made from laminated mica and synthetic resin have been developed and some have been put into practical use, but they have a high specific modulus and are excellent. Although it has physical properties, it is brittle, and when used in high-output speakers, it lacks reliability, such as breakage, and the thickness tends to be uneven, resulting in variations in characteristics.
本発明は以上のような従来の欠点を除去するものであり
、比弾性率が大きく、耐熱性、耐湿性。The present invention eliminates the above-mentioned conventional drawbacks, and has a high specific modulus, heat resistance, and moisture resistance.
寸法安定性に優れ、さらに脆弱性のないスピーカ用振動
板を提供することを目的とするものである。The object of the present invention is to provide a speaker diaphragm that has excellent dimensional stability and is free from brittleness.
上記目的を達成するために本発明は高弾性率を有する繊
維からなる基布に扁平形状の集成マイカ単独または天然
パルプを配合した集成マイカを積層させてシート状とし
たものに耐熱性と剛性に優れた合性樹脂を含浸したもの
を加熱成形して構成されたことを特徴とするものである
。In order to achieve the above object, the present invention has a base fabric made of fibers with a high modulus of elasticity and a laminated sheet of laminated mica in a flat shape or laminated mica mixed with natural pulp, which has high heat resistance and rigidity. It is characterized by being constructed by thermoforming a material impregnated with an excellent synthetic resin.
以下、本発明の実施例を図面第１図、第２図により説明
する。Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.
１は中央にネック部２を有し、このネック部２の周囲に
コーン部３を連続して構成したスピーカ用振動板である
。Reference numeral 1 denotes a speaker diaphragm having a neck portion 2 at the center and a cone portion 3 continuously arranged around the neck portion 2. As shown in FIG.
このスピーカ用振動板１は第２図に示すように、耐熱性
、比弾性率に優れ、寸法変化の少ないガラス繊維や炭素
繊維さらには芳香族ポリアミド繊維から得られる基布４
と、３０〜２ｏＯメツシユの大きさに破剥して得られる
扁平な微細マイカ鱗片よりなる集成マイカ６単独、また
は天然パルプ６を配合した集成マイカ６を積層したシー
ト状のものに耐熱性と剛性に優れたエポキシ、フェノー
ルなどの熱硬化性樹脂あるいは剛性、接着性の優れたア
クリル系などの熱可塑性樹脂などの合成樹脂７とよりな
っている。As shown in FIG. 2, this speaker diaphragm 1 has a base fabric 4 made of glass fiber, carbon fiber, or aromatic polyamide fiber, which has excellent heat resistance and specific modulus, and has little dimensional change.
The laminated mica 6 alone, which is made up of flat fine mica scales obtained by exfoliating into the size of 30 to 2 oO mesh, or laminated with laminated mica 6 mixed with natural pulp 6, has heat resistance and rigidity. It is made of synthetic resin 7, such as a thermosetting resin such as epoxy or phenol, or a thermoplastic resin such as acrylic resin, which has excellent rigidity and adhesiveness.
すなわち、その製造は基布４上に微細マイカ−片６単独
または天然パルプ６を配合した集成マイカ６を積層して
シート状とし、これに合成樹脂７を含浸し、乾燥した後
、成形金型により１８０℃〜２０Ｃ）Ｃで５〜６秒加熱
加圧成形して第１図に示すような形状のスピーカ用振動
板１を得る。このとき、シート状のものが＋ミキュアの
状態であれば、スピーカ用振動板として全高の低いもの
については成形可能であるが、シート状のものが完全硬
化状態であればコーン形状に合わせてあらかじめ扇状に
シートを切抜いてから第１図に示すようにシームドコー
ンに加熱成形すればスピーカ用振動板１として全高の高
いものが得られる。That is, its production involves laminating fine mica pieces 6 alone or composite mica 6 mixed with natural pulp 6 on base fabric 4 to form a sheet, impregnating this with synthetic resin 7, drying, and then molding it into a mold. The diaphragm 1 for a speaker having the shape shown in FIG. 1 is obtained by heat-pressing molding at 180 DEG C. to 20 DEG C. for 5 to 6 seconds. At this time, if the sheet-like material is in a +micure state, it is possible to form a speaker diaphragm with a low overall height, but if the sheet-like material is in a fully cured state, it can be molded in advance to match the cone shape. If a sheet is cut out in a fan shape and then heated and formed into a seamed cone as shown in FIG. 1, a loudspeaker diaphragm 1 with a high overall height can be obtained.
なお、上記実施例をさら°に具体的に説明すると、基布
４として厚さ０．１簡のガラス繊維基布を用い、これに
３０〜２００メツシユの集成マイカ６と天然パルプ６配
合の素材を積層させてシート状となす。集成マイカ６と
天然パルプ６の配合比は６０〜８０重量部＝２０〜６０
重量部で、これにシー゛ ト状のもの１００重量部に対
し１０〜１ｏｏ重量部のエポキシ樹脂７を含浸させた。To explain the above embodiment in more detail, a glass fiber base fabric with a thickness of 0.1 is used as the base fabric 4, and a material containing 30 to 200 meshes of laminated mica 6 and natural pulp 6 is used. are laminated to form a sheet. The blending ratio of aggregate mica 6 and natural pulp 6 is 60-80 parts by weight = 20-60
This was impregnated with 10 to 100 parts by weight of epoxy resin 7 per 100 parts by weight of the sheet-like material.
このシート状のものは、ガラス繊維基布：集成マイカ＋
天然パルプ：エポキシ樹脂が３０ 二５０：２０（重量
比）とし、これを熱ロールでシート化し、これをシーム
ド工法によりスピーカ用振動板形状に成形した。This sheet-like material consists of glass fiber base fabric: laminated mica +
The ratio of natural pulp to epoxy resin was 30 to 50:20 (weight ratio), and this was formed into a sheet using a hot roll, which was then molded into the shape of a speaker diaphragm using a seamed construction method.
上記組成の本発明のスピーカ用振動板と、従来の天然パ
ルプの振動板、マイカ振動板との物性の比較を下表に示
す。A comparison of physical properties between the speaker diaphragm of the present invention having the above composition and conventional natural pulp diaphragms and mica diaphragms is shown in the table below.
この結果、マイカ振動板は物性は良好であるが共振の鋭
さＱが大きいといった欠点があり、本発明のスピーカ用
振動板は比弾性率の点でマイカ振動板に近く、共振の鋭
さＱについても天然パルプ振動板には及ばないもののマ
イカ振動板より十分に小さくなり、スピーカ用振動板と
して優れたものとなる。As a result, although mica diaphragms have good physical properties, they have the disadvantage of having a large resonance sharpness Q.The speaker diaphragm of the present invention is close to mica diaphragms in terms of specific elastic modulus, and also has a high resonance sharpness Q. Although it is not as large as a natural pulp diaphragm, it is sufficiently smaller than a mica diaphragm, making it an excellent speaker diaphragm.
以上のように本発明のスピーカ用振動板は構成されるた
め、比弾性率に優れ、耐湿性、耐熱性も良好でもろさも
なく大出力用スピーカにも十分使用できる信頼性の高い
ものとなシ、厚みも均一でコスト−面でも有利であるな
どの効果をもち、工業的価値の大なるものである。Since the speaker diaphragm of the present invention is constructed as described above, it has excellent specific elastic modulus, good moisture resistance and heat resistance, is not brittle, and is highly reliable enough to be used in high-output speakers. It has a uniform thickness and is advantageous in terms of cost, and is of great industrial value.
第１図は本発明のスピーカ用振動板の一実施例を示す半
断面正面図、第２図は同要部の拡大断面図である。
４・・・・・・基布、６・・・・・・集成マイカ、６・
・・・・・天然パルプ、７・・・・・・合成樹脂。FIG. 1 is a half-sectional front view showing an embodiment of a speaker diaphragm according to the present invention, and FIG. 2 is an enlarged sectional view of the main part thereof. 4...Base fabric, 6...Laminated mica, 6.
...Natural pulp, 7...Synthetic resin.
Claims (1)
イカ単独または天然パルプを配合した集成マイカを積層
したシート状のものに耐熱性、剛性に優れた合成樹脂を
含浸して一体化したものを振動板形状に加熱成形してな
るスピーカ用振動板。A sheet made by laminating a flat laminated mica alone or laminated mica mixed with natural pulp on a base fabric made of fibers with a high modulus of elasticity, impregnated with a synthetic resin with excellent heat resistance and rigidity, and integrated. A speaker diaphragm made by heating and molding into a diaphragm shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17426381A JPS5875398A (en) | 1981-10-29 | 1981-10-29 | Loud speaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17426381A JPS5875398A (en) | 1981-10-29 | 1981-10-29 | Loud speaker diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5875398A true JPS5875398A (en) | 1983-05-07 |
Family
ID=15975574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17426381A Pending JPS5875398A (en) | 1981-10-29 | 1981-10-29 | Loud speaker diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875398A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230498U (en) * | 1985-08-07 | 1987-02-24 | ||
| JPH01100596U (en) * | 1987-12-25 | 1989-07-06 | ||
| JPH0265949A (en) * | 1988-08-27 | 1990-03-06 | Yamazaki Mazak Corp | Measuring device for work of machine tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275317A (en) * | 1975-12-19 | 1977-06-24 | Mitsubishi Electric Corp | Diaphragm for speakers |
-
1981
- 1981-10-29 JP JP17426381A patent/JPS5875398A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275317A (en) * | 1975-12-19 | 1977-06-24 | Mitsubishi Electric Corp | Diaphragm for speakers |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230498U (en) * | 1985-08-07 | 1987-02-24 | ||
| JPH01100596U (en) * | 1987-12-25 | 1989-07-06 | ||
| JPH0265949A (en) * | 1988-08-27 | 1990-03-06 | Yamazaki Mazak Corp | Measuring device for work of machine tool |
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