JPH01248900A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPH01248900A JPH01248900A JP7748488A JP7748488A JPH01248900A JP H01248900 A JPH01248900 A JP H01248900A JP 7748488 A JP7748488 A JP 7748488A JP 7748488 A JP7748488 A JP 7748488A JP H01248900 A JPH01248900 A JP H01248900A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- titanium oxide
- oxide film
- mica
- fabric
- 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
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010445 mica Substances 0.000 claims abstract description 12
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 12
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 238000001746 injection moulding Methods 0.000 claims abstract description 8
- -1 polypropylene Polymers 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000012784 inorganic fiber Substances 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims 1
- 239000004917 carbon fiber Substances 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 claims 1
- 239000008188 pellet Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract 4
- 239000000088 plastic resin Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
スピーカ用振動板多くは、パルプや繊維材などを主材料
とした紙製のものであり、この紙製の振動板は、質量が
小さく、比較的ヤング率が大きく、さらには、内部損失
が適度に大きいなどの理由のほか、成形が容易で、かつ
、廉価に提供できるなども大きな特徴になっている。
また、振動板自体としては、過渡特性がよく、能率が高
く、高音域で伸びがよく、さらに、分離振動が抑えられ
、周波数特性における高音域のピーク、デイツプが小さ
いなどが要求されている。
これらの特性を悉く満足させるには、紙素材のもつ基本
的物性により自ら限度があり、特性向上のためには、紙
に他の材料を混抄するか、全く池の材料に置換えてしま
うことが必要である。
パルプを材料とする振動板は、パルプ繊維の引張、圧縮
弾性率の非直線性繊維間の結合と捉み合いなどにより成
立っているので、抗張力が低いこと１機械抵抗は繊維間
の摩擦が主たるものであるので、チタン、アルミニウム
等の金属製振動板に比較するとヤング率が低く、中高音
域用振動板としては再生能力に限界があった、Most speaker diaphragms are made of paper, mainly made of pulp or fiber materials, and these paper diaphragms have a small mass, a relatively large Young's modulus, and a moderate internal loss. In addition to its large size, other major features are that it is easy to mold and can be provided at a low price. Furthermore, the diaphragm itself is required to have good transient characteristics, high efficiency, good stretch in the high range, suppressed isolated vibrations, and small peaks and dips in the high range in frequency characteristics. In order to satisfy all of these properties, there is a limit due to the basic physical properties of the paper material, and in order to improve the properties, it is necessary to mix other materials into the paper or replace it with Ike's materials altogether. is necessary. A diaphragm made of pulp is made up of the tension of pulp fibers and the bonding and trapping of non-linear fibers with a compressive elastic modulus, so the tensile strength is low.1 Mechanical resistance is due to the friction between the fibers. Because it is the main material, the Young's modulus is lower than that of metal diaphragms such as titanium and aluminum, and there is a limit to its reproduction ability as a diaphragm for medium and high frequency ranges.
上述のようなパルプ繊維により得な振動板の特性上の問
題を解決するには、チタンや、アルミニウムなどの金属
製振動板に置換えれば問題は解決されるが、新たに成形
上の問題、即ち、振動板の加工が面倒であり、さらに、
高価となって製品のコストアップの問題が生じ、これら
の問題を解決するために、成形が容易で、かつ、コスト
が廉価なものにするために合成樹脂製の振動板が注目を
浴びている。
る特性が得られない問題があった。
そこで、この発明は振動■、とくに、合成樹脂製の振動
板の特性を向上させるために、充填材を改良することを
目的とするものである。In order to solve the above-mentioned problem with the properties of the diaphragm made of pulp fibers, replacing the diaphragm with a metal diaphragm made of titanium or aluminum would solve the problem, but there would be new molding problems, That is, processing the diaphragm is troublesome, and furthermore,
This has led to the problem of increased product costs, and to solve these problems, synthetic resin diaphragms have been attracting attention because they are easy to mold and inexpensive. . There was a problem that the characteristics could not be obtained. Therefore, the object of the present invention is to improve the filler material in order to improve vibration (1), particularly the characteristics of a synthetic resin diaphragm.
上述のような目的を達成するなめに、この発明は、無機
有機材の鱗片状、繊維状の表面に酸化チタン膜を施し、
これを熱可塑性樹脂に混入して射出成形して得ることを
特徴とするものである。In order to achieve the above-mentioned object, the present invention applies a titanium oxide film to the scale-like or fibrous surface of an inorganic organic material,
It is characterized in that it is obtained by mixing it into a thermoplastic resin and injection molding it.
以下、この発明の詳細な説明する。この発明により得た
振動板は、ポリプロピレン樹脂のように熱可塑性樹脂が
用いられ、この熱可塑性樹脂に対して重量比にして３０
％の鱗状のマイカが混入されて射出成形用のペレットが
形成され、そのマイカによる鱗片は粒径が１０〜２００
μｍの範囲に揃えられ、その表面に厚さ０．０５〜０．
２μｍの酸化チタン膜が施される。
次に「ポリプロピレン単体」、「ポリプロピレン７０
ｗ ｔ％に無処理マイカ３０ｗｔ％を加えたものＪ、［
ポリプロピレン７０ｗｔ％に酸化チタン膜を形成したも
の３０ｗｔ％」により得た振動板の物性を比較する。
上述のように、マイカに酸化チタン膜を施したして好ま
しい方向に向上している。
振動板の成形に際しては射出成形法が最も適し、ポリプ
ロピレンに対して酸化チタン膜が施されたマイカ３０ｗ
ｔ％のベレットを予め用意しておくことで、その射出成
形時にナチュラルポリプロピレンを加えてマイカ含有率
の制御も容易である。The present invention will be described in detail below. The diaphragm obtained by this invention uses a thermoplastic resin such as polypropylene resin, and has a weight ratio of 30 to the thermoplastic resin.
% of scaly mica is mixed in to form pellets for injection molding, and the mica scales have a particle size of 10 to 200 mica.
The surface has a thickness of 0.05 to 0.05 μm.
A 2 μm titanium oxide film is applied. Next, “Polypropylene alone” and “Polypropylene 70
30 wt% of untreated mica added to wt% J, [
The physical properties of diaphragms obtained from 30 wt % polypropylene with a titanium oxide film formed on 70 wt % polypropylene will be compared. As mentioned above, when a titanium oxide film is applied to mica, the performance is improved in a favorable direction. Injection molding is the most suitable method for molding the diaphragm, and mica 30W is made of polypropylene with a titanium oxide film applied.
By preparing pellets of t% in advance, it is easy to control the mica content by adding natural polypropylene during injection molding.
【他の実施例］
以上の説明では、マイカの鱗片状のものを用いることで
説明を行ったが、他の鱗片状物質１例えば、フレーク状
の黒鉛、ガラス粉、金属粉に酸化チタン膜を設けたもの
、あるいは、炭素正、ガスｍＭＩなどの無機繊維、ある
いは、アラミド繊維などの有機繊維に酸化チタン膜を形
成しものであってもよい。
【発明の効果】
以上の説明から明らかなように、この発明のスピーカ用
振動板は、従来品に比較してヤング率。
内部損失などの物性において優れ、周波数特性の広帯域
化、平均化を図ることができ、音質の向上を期待するこ
とができる。
また、物性の制御も容易でスピーカ設計上の自由度が大
きくなる。
特許出願人 パイオニア株式会社代理人 弁理士
小 橋 信 滓
量 弁理士 村 井 進[Other Examples] In the above explanation, mica flakes were used. However, other flaky substances 1, such as flakes of graphite, glass powder, and metal powder, were coated with a titanium oxide film. Alternatively, a titanium oxide film may be formed on inorganic fibers such as carbon positive or gas mMI, or organic fibers such as aramid fibers. [Effects of the Invention] As is clear from the above description, the speaker diaphragm of the present invention has a lower Young's modulus than conventional products. It has excellent physical properties such as internal loss, and can be used to widen and average frequency characteristics, and can be expected to improve sound quality. Furthermore, physical properties can be easily controlled, increasing the degree of freedom in speaker design. Patent applicant: Pioneer Co., Ltd. Agent: Patent attorney: Nobu Kobashi, Patent attorney: Susumu Murai
Claims (3)
鱗片状にして表面に０．０５〜０．２μｍ厚の酸化チタ
ン膜が施され、粒径が１０〜２００μｍのマイカが混入
されて射出成形によって得たスピーカ用振動板。(1) Thermoplastic resin such as polypropylene, and
A diaphragm for a speaker obtained by injection molding, the surface of which is formed into scales and coated with a titanium oxide film having a thickness of 0.05 to 0.2 μm and mixed with mica having a particle size of 10 to 200 μm.
に酸化タチン膜を施し、これを熱可塑性樹脂に混入して
成形して得られたスピーカ用振動板。(2) A diaphragm for a speaker obtained by applying a tatin oxide film to the surface of flaky graphite, glass powder, metal powder, etc., mixing it with a thermoplastic resin, and molding it.
、アラミド繊維などの有機繊維に酸化チタン膜を施し、
これを熱可塑性樹脂に混入して射出成形して得られたス
ピーカ用振動板。(3) Applying a titanium oxide film to inorganic fibers such as carbon fibers and glass fibers, or organic fibers such as aramid fibers,
A speaker diaphragm obtained by mixing this with thermoplastic resin and injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748488A JPH01248900A (en) | 1988-03-30 | 1988-03-30 | Diaphragm for speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7748488A JPH01248900A (en) | 1988-03-30 | 1988-03-30 | Diaphragm for speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01248900A true JPH01248900A (en) | 1989-10-04 |
Family
ID=13635257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7748488A Pending JPH01248900A (en) | 1988-03-30 | 1988-03-30 | Diaphragm for speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01248900A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006325189A (en) * | 2005-04-20 | 2006-11-30 | Matsushita Electric Ind Co Ltd | Method for producing diaphragm for speaker |
| JP2010011436A (en) * | 2008-05-28 | 2010-01-14 | Onkyo Corp | Speaker diaphragm, and electrodynamic loudspeaker using the same |
| US8122996B2 (en) | 2006-12-22 | 2012-02-28 | Panasonic Corporation | Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker |
-
1988
- 1988-03-30 JP JP7748488A patent/JPH01248900A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006325189A (en) * | 2005-04-20 | 2006-11-30 | Matsushita Electric Ind Co Ltd | Method for producing diaphragm for speaker |
| US8122996B2 (en) | 2006-12-22 | 2012-02-28 | Panasonic Corporation | Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker |
| US8177021B1 (en) | 2006-12-22 | 2012-05-15 | Panasonic Corporation | Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker |
| US8230966B2 (en) | 2006-12-22 | 2012-07-31 | Panasonic Corporation | Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker |
| US8235168B2 (en) | 2006-12-22 | 2012-08-07 | Panasonic Corporation | Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker |
| JP2010011436A (en) * | 2008-05-28 | 2010-01-14 | Onkyo Corp | Speaker diaphragm, and electrodynamic loudspeaker using the same |
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