JPH028474Y2 - - Google Patents
Info
- Publication number
- JPH028474Y2 JPH028474Y2 JP1982121320U JP12132082U JPH028474Y2 JP H028474 Y2 JPH028474 Y2 JP H028474Y2 JP 1982121320 U JP1982121320 U JP 1982121320U JP 12132082 U JP12132082 U JP 12132082U JP H028474 Y2 JPH028474 Y2 JP H028474Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- moisture
- vinylidene chloride
- resin
- base
- 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
- -1 polypropylene Polymers 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 229920005672 polyolefin resin Polymers 0.000 claims description 10
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000835 fiber Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004823 Reactive adhesive Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
【考案の詳細な説明】
この考案は特に耐湿、耐水性を考慮したスピー
カー用振動板の改良に関する。[Detailed Description of the Invention] This invention relates to an improvement of a speaker diaphragm with particular consideration to moisture resistance and water resistance.
従来スピーカー用振動板は主としてパルプ繊維
を用いたものが多用されているが周知のごとくパ
ルプ繊維は吸湿性が高く周囲環境の湿度により音
響特性が劣化する欠点があり、ましてや耐水性能
においてはその機能を全く達成することができな
かつた。 Conventionally, diaphragms for speakers have mainly been made of pulp fibers, but as is well known, pulp fibers are highly hygroscopic and have the disadvantage that their acoustic properties deteriorate due to the humidity of the surrounding environment, and their water resistance performance is even worse. could not be achieved at all.
そこで、当該パルプ繊維に種々の耐湿又は耐水
物質を混入した振動板が考えられているが、この
ような物質の添加は振動板重量の増加や、振動板
物性の劣化等の原因になる場合が多い。 Therefore, diaphragms are being considered in which various moisture-resistant or water-resistant substances are mixed into the pulp fibers, but the addition of such substances may cause an increase in the weight of the diaphragm or a deterioration of the physical properties of the diaphragm. many.
又パルプ繊維にくらべて耐湿、耐水特性のすぐ
れた合成樹脂シートを成形してなる振動板が考え
られているが音響特性から検討するとかならずし
も満足するものでない。 Also, diaphragms made of synthetic resin sheets, which have superior moisture and water resistance properties compared to pulp fibers, have been considered, but they are not always satisfactory when considered from the standpoint of acoustic properties.
たとえば最も多用されているポリエチレンテレ
フタレート樹脂シートを成形してなる振動板は内
部損失(tanδ)が小さい(0.009;20℃)ため分
割振動領域で周波数特性にピークやデイツプが生
じ又歪が大きくなる。 For example, a diaphragm made of polyethylene terephthalate resin sheet, which is most commonly used, has a small internal loss (tan δ) (0.009; 20°C), which causes peaks and dips in frequency characteristics in the divided vibration region, and increases distortion.
又ポリカーボネート樹脂シートを成形した振動
板は内部損失が小さく(0.005;20℃)、上記ポリ
エチレンテレフタレート樹脂振動板を同様の欠点
を有する他、有機溶剤に溶解しやすく、スピーカ
ー組立時において多用されている有機溶剤を用い
たゴム系接着剤の使用ができないので限られた接
着剤しか使用できない欠点を有する。 In addition, diaphragms made of polycarbonate resin sheets have low internal loss (0.005; 20°C), and have the same drawbacks as the polyethylene terephthalate resin diaphragms mentioned above, but are also easily dissolved in organic solvents, and are often used when assembling speakers. It has the disadvantage that only a limited number of adhesives can be used because rubber adhesives using organic solvents cannot be used.
更に内部損失の大きい材質としてポリオレフイ
ン系樹脂、特にポリプロピレン(tanδ=0.097;
20℃)やポリエチレン(tanδ=0.18;20℃)がス
ピーカー用振動板として使用され音響特性におい
てある程度満足するものが得られているが耐湿、
耐水特性において今だ満足されていなかつた。 Furthermore, polyolefin resins, especially polypropylene (tan δ = 0.097;
20℃) and polyethylene (tan δ = 0.18; 20℃) are used as diaphragms for speakers, and have achieved somewhat satisfactory acoustic properties, but moisture resistance and
The water resistance properties were still unsatisfactory.
そこで、この考案は上記ポリオレフイン系樹脂
の音響特性の良好な利点を保持しつつ更に耐湿、
耐水特性を向上せしめたものであり以下実施例に
ついて更に詳しく説明する。 Therefore, this invention maintains the good acoustic properties of the polyolefin resin, while also providing moisture resistance and
The water resistance properties are improved, and examples will be explained in more detail below.
第1図はこの考案実施例のドーム型スピーカー
で、ポリプロピレン、ポリエチレン等のポリオレ
フイン系樹脂1を基体とし、この両面に塩化ビニ
リデン樹脂2を成層した構成を有する。 FIG. 1 shows a dome-shaped speaker according to an embodiment of this invention, and has a structure in which a polyolefin resin 1 such as polypropylene or polyethylene is used as a base, and vinylidene chloride resin 2 is layered on both sides of the base.
当該振動板を得るにはたとえば、ポリオレフイ
ン系樹脂のシートの両面をコロナ放電処理により
活性化した後、塩化ビニリデン樹脂溶液中を通し
て両面に塩化ビニリデン樹脂溶液を成層し、これ
をコートナイフにより一定の厚みにした後、乾燥
する。 To obtain the diaphragm, for example, after activating both sides of a polyolefin resin sheet by corona discharge treatment, the vinylidene chloride resin solution is layered on both sides by passing it through a vinylidene chloride resin solution, and this is coated with a coat knife to a certain thickness. After that, dry it.
そして上記工程により得られたシートを真空成
形によつてドーム状に成形する。 Then, the sheet obtained in the above steps is formed into a dome shape by vacuum forming.
このようにして得られた振動板の耐湿、耐水特
性を確認するため、基体にポリプロピレン及びポ
リエチレンを用いた振動板について透湿度及び水
分含有量を測定したところ第2図及び第3図の結
果を得た。 In order to confirm the moisture resistance and water resistance characteristics of the diaphragm obtained in this way, we measured the moisture permeability and water content of diaphragms using polypropylene and polyethylene as the base, and the results shown in Figures 2 and 3 were obtained. Obtained.
なお第2図及び第3図においてaは厚さ50μm
のポリプロピレンよりなる振動板、bは厚さ
50μmのポリエチレンよりなる振動板、cは厚さ
30μmのポリプロピレンを基体としてこの両面に
それぞれ10μmの塩化ビニリデン樹脂を成層した
本考案実施の振動板、およびdは厚さ40μmのポ
リエチレンを基体としこの両面にそれぞれ5μmの
塩化ビニリデン樹脂を成層した本考案実施の振動
板のそれぞれの特性である。 In addition, in Figures 2 and 3, a is 50 μm thick.
diaphragm made of polypropylene, b is the thickness
Vibration plate made of 50 μm polyethylene, c is the thickness
The diaphragm of the present invention is made of a 30 μm thick polypropylene base and 10 μm of vinylidene chloride resin is layered on each side, and d is the present invention that has a 40 μm thick polyethylene base and 5 μm of vinylidene chloride resin is layered on each side. These are the characteristics of each diaphragm in practice.
この図から明らかなようにこの考案によれば、
従来のポリオレフイン系樹脂単体の振動板に比較
して透湿率及び水分含有率をそれぞれ約1/2程度
にすることができた。 As is clear from this figure, according to this idea,
Compared to conventional diaphragms made of polyolefin resin alone, the moisture permeability and moisture content can be reduced to approximately 1/2.
本考案の塩化ビニリデン樹脂層は上記のごとく
耐湿、耐水特性の改善に寄与するのみでなく次の
利点も有する。 The vinylidene chloride resin layer of the present invention not only contributes to the improvement of moisture resistance and water resistance as described above, but also has the following advantages.
すなわち、周知のごとくポリオレフイン系樹脂
は接着性に極めて乏しくスピーカーに組立てる上
において問題を有するが、この考案によれば塩化
ビニリデン樹脂層が接着に関与する最外皮層とな
るので従来多用されているエポキシ樹脂系等の反
応型接着剤やクロロプレンゴム系等の溶剤揮発型
接着剤を用いて接着を行うことができた。 In other words, as is well known, polyolefin resin has extremely poor adhesion and has problems when assembled into speakers, but according to this invention, the vinylidene chloride resin layer becomes the outermost skin layer involved in adhesion, so it can be used instead of epoxy, which is commonly used in the past. Adhesion could be achieved using a reactive adhesive such as a resin-based adhesive or a solvent-volatile adhesive such as a chloroprene rubber-based adhesive.
以上に説明したようにこの考案はポリオレフイ
ン系樹脂を基体とし、この両面に塩化ビニリデン
樹脂層を成層したスピーカー用振動板であつて、
耐湿、耐水特性のすぐれたスピーカー用振動板を
提供でき、かつスピーカー組立時における接着性
を改善せしめたものであり実用的に極めてすぐれ
た考案である。 As explained above, this invention is a speaker diaphragm that has a polyolefin resin as its base and vinylidene chloride resin layers on both sides.
This is an extremely practical idea that can provide a speaker diaphragm with excellent moisture and water resistance properties, and also improves adhesiveness during speaker assembly.
第1図はこの考案の振動板の断面図、第2及び
第3図はそれぞれ透湿度、水分含有率を示す図で
ある。
FIG. 1 is a sectional view of the diaphragm of this invention, and FIGS. 2 and 3 are diagrams showing moisture permeability and moisture content, respectively.
Claims (1)
の両面に接着剤を介することなく塩化ビリニデ
ン樹脂を成層したことを特徴とするスピーカ用
振動板。 2 オレフイン系樹脂がポリプロピレンであるこ
とを特徴とする実用新案登録請求の範囲第1項
記載のスピーカ用振動板。 3 オレフイン系樹脂がポリエチレンであること
を特徴とする実用新案登録請求の範囲第1項記
載のスピーカ用振動板。[Claims for Utility Model Registration] 1. A diaphragm for a speaker, characterized in that it has an olefin resin as a base, and that vinylidene chloride resin is layered on both sides of the base without using an adhesive. 2. The speaker diaphragm according to claim 1, wherein the olefin resin is polypropylene. 3. The speaker diaphragm according to claim 1, wherein the olefin resin is polyethylene.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12132082U JPS5925890U (en) | 1982-08-09 | 1982-08-09 | Diaphragm for speakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12132082U JPS5925890U (en) | 1982-08-09 | 1982-08-09 | Diaphragm for speakers |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5925890U JPS5925890U (en) | 1984-02-17 |
JPH028474Y2 true JPH028474Y2 (en) | 1990-02-28 |
Family
ID=30277720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12132082U Granted JPS5925890U (en) | 1982-08-09 | 1982-08-09 | Diaphragm for speakers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5925890U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5538683A (en) * | 1978-09-12 | 1980-03-18 | Mitsubishi Electric Corp | Mass-storage static shift register |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5819912Y2 (en) * | 1978-12-14 | 1983-04-23 | オンキヨー株式会社 | Diaphragm for speakers |
-
1982
- 1982-08-09 JP JP12132082U patent/JPS5925890U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5538683A (en) * | 1978-09-12 | 1980-03-18 | Mitsubishi Electric Corp | Mass-storage static shift register |
Also Published As
Publication number | Publication date |
---|---|
JPS5925890U (en) | 1984-02-17 |
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