JPS586440B2 - Onkiyoukikiyoushindoban - Google Patents
OnkiyoukikiyoushindobanInfo
- Publication number
- JPS586440B2 JPS586440B2 JP10671875A JP10671875A JPS586440B2 JP S586440 B2 JPS586440 B2 JP S586440B2 JP 10671875 A JP10671875 A JP 10671875A JP 10671875 A JP10671875 A JP 10671875A JP S586440 B2 JPS586440 B2 JP S586440B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- diaphragm
- ethylene
- copolymer
- vinyl acetate
- 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.)
- Expired
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)
- Compositions Of Macromolecular Compounds (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【発明の詳細な説明】
本発明は音響機器用振動板、特にオープンエアータイプ
ヘッドホン用振動板、ツイータ用高分子フイルム振動板
として弾性率が高くしかも適度の内部損失を有し、軽量
で周波数特性の良好な振動板を提供するものである。Detailed Description of the Invention The present invention is a diaphragm for audio equipment, particularly a diaphragm for open-air type headphones, and a polymer film diaphragm for tweeters, which has a high elastic modulus and moderate internal loss, is lightweight, and has excellent frequency characteristics. This provides a good quality diaphragm.
従来、スピーカあるいはヘッドホン用振動板としては、
天然および合成繊維、紙、布等をコーン状、ドーム状に
成形加工した振動板またはポリエステル、ポリアミドの
成形物が使用されていた。Conventionally, as a diaphragm for speakers or headphones,
Vibration plates made of natural or synthetic fibers, paper, cloth, etc. into cone or dome shapes, or molded products of polyester or polyamide were used.
しかしながら、ポリエステルフイルムは比弾性率は大き
いが内部損失が小さ《周波数特性は“アバレ“を生じ歪
が大きいなどの欠点を有していた。However, polyester film has drawbacks such as high specific elastic modulus but low internal loss (frequency characteristics exhibit "ablation" and large distortion).
またポリアミドの場合内部損失は大きいが比弾性率が小
さく高城再生特性が悪い欠点を有していた。In addition, in the case of polyamide, the internal loss is large, but the specific elastic modulus is small and Takagi regeneration characteristics are poor.
本発明はこれら従来のフイルム振動板の欠点をな《し広
帯域再生が可能でしかも低歪の振動板を提供するもので
ある。The present invention overcomes the drawbacks of these conventional film diaphragms and provides a diaphragm that can reproduce a wide band and has low distortion.
即ち高重合度ポリ塩化ビニール（平均重合度１６００）
を主成分とし、エチレン、酢酸ビニール共重合体の塩化
ビニールグラフト共重合物をブレンドした配合物を射出
成形またはフイルムにした後熱成形して成る振動板であ
り本発明振動板は周波数特性が従来のフイルム振動板に
比較してはるかにすぐれている特徴を有するものである
。That is, high polymerization degree polyvinyl chloride (average degree of polymerization 1600)
The diaphragm of the present invention is made by injection molding or thermoforming a blend of ethylene, vinyl acetate copolymer, and vinyl chloride graft copolymer. It has far superior features compared to the film diaphragm.
主剤のポリ塩化ビニールにより高弾性率を維持し、エチ
レン、酢酸ビニール、塩化ビニール３元共重合体により
ゴム的な粘弾性と内部損失を保ち、更に主剤に対する相
容性を高め、長期間にわたり安定した特性の維持を可能
ならしめたものである。The base material, polyvinyl chloride, maintains a high elastic modulus, and the ethylene, vinyl acetate, and vinyl chloride ternary copolymer maintains rubber-like viscoelasticity and internal loss.It also increases compatibility with the base material and remains stable over a long period of time. This makes it possible to maintain the same characteristics as before.
以下本発明の実施例について詳細に説明する。Examples of the present invention will be described in detail below.
実施例 １
平均重合度１６００のポリ塩化ビニール１００部に対し
、エチレン・酢酸ビニール共重合体の塩化ビニールグラ
フト共重合体（共重合比５０：５０：１０）を２０部、
安定剤として有機錫ラウレート２部を熱ロールにより混
練し配合物を作成した。Example 1 To 100 parts of polyvinyl chloride with an average degree of polymerization of 1600, 20 parts of vinyl chloride graft copolymer of ethylene/vinyl acetate copolymer (copolymerization ratio 50:50:10),
A blend was prepared by kneading 2 parts of organic tin laurate as a stabilizer using a hot roll.
この配合物により厚さ１ｙｘｍ、巾１０ｍｙｎ，長さ１
５０ｍｍの試験片を作成しこれを振動リード法によって
内部損失、弾性率、比弾性率を測定した。With this compound, the thickness is 1yxm, the width is 10myn, and the length is 1yxm.
A 50 mm test piece was prepared, and its internal loss, elastic modulus, and specific elastic modulus were measured using the vibrating lead method.
実施例 ２
実施例１においてエチレン・酢酸ビニール共重合体の塩
化ビニールグラフト共重合体を４０部としたもの。Example 2 Example 1 except that the vinyl chloride graft copolymer of ethylene/vinyl acetate copolymer was added to 40 parts.
実施例 ３
平均重合度１６００のポリ塩化ビニールｌｏｏ部に対し
て、エチレン・酢酸ビニール共重合体の塩化ビニールグ
ラフト共重合体（共重合比５ｏ：５０：２ＯＷｔ比）を
２０部、安定剤として有機錫ラウレート２部を配合し、
熱ロールにより混線を行ない配合物を作成した。Example 3 20 parts of vinyl chloride graft copolymer of ethylene/vinyl acetate copolymer (copolymerization ratio 5o:50:2OWt ratio) was added to the loo part of polyvinyl chloride with an average degree of polymerization of 1600, and an organic stabilizer was added. Contains 2 parts of tin laurate,
A mixture was prepared by cross-crossing using a hot roll.
実施例１と同様にして試験片を作成し特性の測定を行な
った。A test piece was prepared in the same manner as in Example 1, and its properties were measured.
実施例 ４
実施例３において、エチレン・酢酸ビニール共重合体の
塩化ビニールグラフト共重合体を４０部としたもの。Example 4 Example 3 except that the vinyl chloride graft copolymer of ethylene/vinyl acetate copolymer was added to 40 parts.
なお上記実施例の配合条件中共重合体量が２０部及び４
０部のものを示したが、振動板としては２０部〜５０部
が最も良く、それ以外では弾性率と損失の大きさが一方
にかたより振動板としての総合特性が劣化することがわ
かった。In addition, in the blending conditions of the above examples, the amount of copolymer was 20 parts and 4 parts.
Although 0 parts was shown, it was found that 20 parts to 50 parts is best for a diaphragm, and other than that, the elastic modulus and loss are skewed to one side, and the overall characteristics as a diaphragm deteriorate. .
図は実施例１Ａ、実施例２Ｂ、ポリエステルを用いた従
来例Ｃおよびポリアミドを用いた従来例Ｄの応力〜歪特
性を示している。The figure shows the stress-strain characteristics of Example 1A, Example 2B, Conventional Example C using polyester, and Conventional Example D using polyamide.
ドーム振動板として好ましい性状は降伏点応力が大きく
しかもその応力によって伸長の大きな材料が適している
ことが実験の結果明らかとなった。Experiments have revealed that the preferred properties for a dome diaphragm are materials that have a large yield point stress and are also able to elongate due to that stress.
このような性状は高分子量の塩化ビニールとエチレン酢
酸ビニール・塩化ビニール共重合体の配合物により得ら
れることがわかった。It has been found that such properties can be obtained by blending high molecular weight vinyl chloride and ethylene vinyl acetate/vinyl chloride copolymer.
ジオクチルフタレートなどの可塑性により可塑化した場
合には得られずゴム系材料によっても得られない。It cannot be obtained by plasticizing with dioctyl phthalate or the like, nor can it be obtained by using rubber-based materials.
本発明による配合物により１９φドーム（厚み４０μ）
を成形しツイータを試作した結果再生周波数特性はポリ
エステルフイルムに比較して再生帯域はほとんど変らず
、平坦性が非常に良く歪も大巾に改善できることを確認
した。19φ dome (thickness 40μ) with the compound according to the invention
As a result of molding it and making a prototype tweeter, we confirmed that the playback frequency characteristics showed almost no change in the playback band compared to polyester film, the flatness was very good, and distortion could be greatly improved.
図は本発明の音響機器用振動板および従来例の応力一歪
特性を示す図である。The figure is a diagram showing the stress-strain characteristics of the diaphragm for audio equipment of the present invention and a conventional example.
Claims (1)
ル１００部に対してエチレン、酢酸ビニール共重合体の
塩化ビニールグラフト共重合体を２０〜５０部、安定剤
を１〜５部加えた樹脂配合物を成形して成る音響機器用
振動板。1. A resin compound containing polyvinyl chloride as the main component and 20 to 50 parts of a vinyl chloride graft copolymer of ethylene and vinyl acetate copolymer and 1 to 5 parts of a stabilizer added to 100 parts of this polyvinyl chloride. A molded diaphragm for audio equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10671875A JPS586440B2 (en) | 1975-09-02 | 1975-09-02 | Onkiyoukikiyoushindoban |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10671875A JPS586440B2 (en) | 1975-09-02 | 1975-09-02 | Onkiyoukikiyoushindoban |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5229725A JPS5229725A (en) | 1977-03-05 |
| JPS586440B2 true JPS586440B2 (en) | 1983-02-04 |
Family
ID=14440722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10671875A Expired JPS586440B2 (en) | 1975-09-02 | 1975-09-02 | Onkiyoukikiyoushindoban |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586440B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6135616A (en) * | 1984-07-27 | 1986-02-20 | Tdk Corp | Field effect transistor drive circuit |
| JPS61224725A (en) * | 1985-03-29 | 1986-10-06 | Shindengen Electric Mfg Co Ltd | Drive circuit of switching element |
| JPH02113622A (en) * | 1988-10-21 | 1990-04-25 | Nec Corp | Mosfet transistor driving circuit |
| JPH0226228Y2 (en) * | 1983-11-10 | 1990-07-17 | ||
| JPH0344228B2 (en) * | 1983-04-27 | 1991-07-05 | Aisin Seiki | |
| JPH0450662Y2 (en) * | 1985-06-12 | 1992-11-30 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5096517A (en) * | 1973-12-29 | 1975-07-31 |
-
1975
- 1975-09-02 JP JP10671875A patent/JPS586440B2/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0344228B2 (en) * | 1983-04-27 | 1991-07-05 | Aisin Seiki | |
| JPH0226228Y2 (en) * | 1983-11-10 | 1990-07-17 | ||
| JPS6135616A (en) * | 1984-07-27 | 1986-02-20 | Tdk Corp | Field effect transistor drive circuit |
| JPS61224725A (en) * | 1985-03-29 | 1986-10-06 | Shindengen Electric Mfg Co Ltd | Drive circuit of switching element |
| JPH0450662Y2 (en) * | 1985-06-12 | 1992-11-30 | ||
| JPH02113622A (en) * | 1988-10-21 | 1990-04-25 | Nec Corp | Mosfet transistor driving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5229725A (en) | 1977-03-05 |
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