JPH0576096A - Speaker edge - Google Patents
Speaker edgeInfo
- Publication number
- JPH0576096A JPH0576096A JP25991991A JP25991991A JPH0576096A JP H0576096 A JPH0576096 A JP H0576096A JP 25991991 A JP25991991 A JP 25991991A JP 25991991 A JP25991991 A JP 25991991A JP H0576096 A JPH0576096 A JP H0576096A
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- pet
- polyethylene terephthalate
- edge
- speaker edge
- 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.)
- Granted
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電気音響変換器におけ
るスピーカエッジに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker edge in an electroacoustic transducer.
【０００２】[0002]
【従来の技術】スピーカエッジは、周知のように、スピ
ーカ振動板の外周縁とスピーカフレームとの間に設けら
れ、ダンパとともにボイスコイルやスピーカ振動板を正
しい位置に支持する機能を有するものである。2. Description of the Related Art As is well known, a speaker edge is provided between an outer peripheral edge of a speaker diaphragm and a speaker frame and has a function of supporting a voice coil and a speaker diaphragm in a correct position together with a damper. ..
【０００３】このスピーカエッジに要求される性能は、 (1) スピーカ振動板の振動を妨げぬように、スピーカ振
動板の振動方向には十分に高いコンプライアンスをもつ
こと。 (2) スピーカ振動板を正しい位置に支持する為に、スピ
ーカ振動板の横方向の動きには十分な剛性をもつこと。 (3) 特に低域における高調波歪の発生を抑えるべく、大
振幅領域まで駆動力−変位特性の直線性が良好なこと。 (4) 異常輻射の原因になるエッジ共振や反転振動を起こ
さないこと。 (5) 振動系部品として軽量であること。 等である。The performance required for the speaker edge is as follows: (1) It has a sufficiently high compliance in the vibration direction of the speaker diaphragm so as not to disturb the vibration of the speaker diaphragm. (2) In order to support the speaker diaphragm in the correct position, it must have sufficient rigidity for lateral movement of the speaker diaphragm. (3) The linearity of the driving force-displacement characteristic is good even in a large amplitude region in order to suppress the occurrence of harmonic distortion particularly in the low range. (4) Do not cause edge resonance or inversion vibration that causes abnormal radiation. (5) Lightweight as a vibration system component. Etc.
【０００４】これら条件を満足すべく、従来、形状付与
材としてフェノール樹脂を含浸した織布に吸振材として
アクリル樹脂等を塗布したもの、或いは不織布に熱硬化
性樹脂から成る形状付与材と吸振材とを塗布又は含浸し
たもの等を成形したものが使用されている。In order to satisfy these conditions, conventionally, a woven fabric impregnated with a phenolic resin as a shape-imparting material is coated with an acrylic resin or the like as a vibration-absorbing material, or a non-woven fabric is made of a thermosetting resin and a shape-imparting material and a vibration-absorbing material. A molded product obtained by applying or impregnating and is used.
【０００５】[0005]
【発明が解決しようとする課題】この様な構造を有する
従来のスピーカエッジは、 (1) スピーカ振動板を正しい位置に支持するための剛性
をスピーカエッジにもたせるため、形状付与材を使用し
ているが、この形状付与材はスピーカの使用とともに剛
性が劣化してスピーカのｆ0 が下がり、初期性能を長期
に渡って維持することができない。またコストや重量の
増加、形状付与材の不均一な含浸による品質のバラツキ
等を招きやすい。 (2) 空孔率又は厚みが十分でなく、空気が空孔を通過す
ることによる空気の粘性抵抗が小さいため、スピーカの
Ｑ0 が大きくなり、その周波数特性上にｆ0 において鋭
いピークを生じる。という解決すべき課題があった。The conventional speaker edge having such a structure uses (1) a shape-imparting material in order to give the speaker edge rigidity to support the speaker diaphragm at the correct position. However, this shape-imparting material deteriorates in rigidity as the speaker is used, and the f 0 of the speaker decreases, so that the initial performance cannot be maintained for a long period of time. In addition, the cost and weight increase, and the quality of the shape-imparting material is likely to be unevenly impregnated. (2) Porosity or thickness is not sufficient, and the viscous resistance of air due to air passing through the holes is small, so Q 0 of the speaker becomes large and a sharp peak appears at f 0 on the frequency characteristic. .. There was a problem to be solved.
【０００６】そこで本発明は、上記従来例に付する欠点
を解消し、形状付与材が不要で、経時変化が少なく、空
気の粘性抵抗が十分に大きくスピーカのＱ0が小さくで
きるスピーカエッジを提供することを目的とする。Therefore, the present invention solves the above-mentioned drawbacks of the prior art, provides a speaker edge that does not require a shape-imparting material, has little change over time, and has a sufficiently large viscous resistance of air and a small Q 0 of the speaker. The purpose is to do.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の本発明に係るスピーカエッジは、ポリエチレンテレフ
タレート繊維を用いた不織布を加熱加圧成形してなるこ
とを特徴とし、また前記ポリエチレンテレフタレート繊
維を用いた不織布が、少なくとも２本以上のポリエチレ
ンテレフタレート単繊維を寄り合わせて成るポリエチレ
ンテレフタレート糸を少なくとも２本以上束ねてこの外
周をウレタン樹脂で覆ったポリエチレンテレフタレート
繊維束を用いた不織布とすることもある。A speaker edge according to the present invention for achieving the above object is characterized in that a nonwoven fabric using polyethylene terephthalate fiber is formed by heating and pressing, and the polyethylene terephthalate fiber is used. The non-woven fabric used may be a non-woven fabric using a polyethylene terephthalate fiber bundle in which at least two or more polyethylene terephthalate yarns formed by tying at least two or more polyethylene terephthalate single fibers are bundled and the outer periphery is covered with a urethane resin. ..
【０００８】[0008]
【作用】そして、この様な構成のスピーカエッジでは、
加熱加圧成形されることにより、ポリエチレンテレフタ
レートの結晶化が進み硬度が上がるため、形状付与材を
必要としない。これにより、スピーカエッジの軽量化、
或いはほぼ同一の重量で良いならば厚みを増加させるこ
とが容易に行える。[Operation] And, in the speaker edge having such a configuration,
By heat-press molding, crystallization of polyethylene terephthalate proceeds and hardness increases, so that a shape-imparting material is not required. This reduces the weight of the speaker edge,
Alternatively, if the weight is almost the same, the thickness can be easily increased.
【０００９】さらにウレタン樹脂で覆われたポリエチレ
ンテレフタレート繊維束を用いたものでは、ウレタン樹
脂により内部損失が大幅に向上し、またその構造におい
て不織布としたことと相俟って、空孔率が均一で大きく
前記空気の粘性抵抗が大きくなる。Further, in the case where the polyethylene terephthalate fiber bundle covered with urethane resin is used, the internal loss is greatly improved by the urethane resin, and the porosity is uniform in combination with the fact that it is a non-woven fabric. This greatly increases the viscous resistance of the air.
【００１０】[0010]
【実施例】図１により、本発明の実施例を詳述する。図
１は実施例の構造説明図であり、図１において1 はポリ
エチレンテレフタレート（以下ＰＥＴ）単繊維、2 はＰ
ＥＴ糸、3 はＰＥＴ繊維束、3aはウレタン樹脂である。Embodiment An embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a structural explanatory view of the embodiment. In FIG. 1, 1 is polyethylene terephthalate (PET) single fiber, 2 is P
ET yarn, 3 is a PET fiber bundle, and 3a is a urethane resin.
【００１１】ＰＥＴ単繊維1 を寄り合わせたＰＥＴ糸2
を７〜８本ずつ束ね、この外周をウレタン樹脂3aでコー
ティングし、ＰＥＴ繊維束3 を作製する。このＰＥＴ繊
維束3 を絡ませ合った通気性のある厚さ０．５mmの不織
布を、上下金型の隙間が０．４５mmのロールエッジ形状
の１８０℃に加熱した金型にて１２秒間加熱加圧成形を
行い、結晶化を促進させ、金型より成形物を取り出し、
所定の形状に切断することにより本願に係るスピーカエ
ッジが得られる。PET yarn 2 in which PET monofilaments 1 are twisted together
7 to 8 are bundled and the outer periphery thereof is coated with urethane resin 3a to prepare a PET fiber bundle 3. This non-woven fabric with a thickness of 0.5 mm in which PET fiber bundles 3 are entangled with each other is heated and pressed for 12 seconds by a mold heated to 180 ° C. in a roll edge shape with a gap of 0.45 mm between the upper and lower molds. Perform molding, promote crystallization, take out the molded product from the mold,
The speaker edge according to the present application can be obtained by cutting into a predetermined shape.
【００１２】以上、本発明に係るスピーカエッジについ
て代表的と思われる実施例を基に詳述したが、本発明の
実施態様は、上記実施例に限定されるものではなく、前
記した特許請求の範囲に記載の構成要件を具備し、本発
明にいう作用を呈し、以下に述べる効果を有する限りに
おいて、適宜改変して実施しうるものである。Although the speaker edge according to the present invention has been described above in detail based on the representative examples, the embodiment of the present invention is not limited to the above-mentioned examples, and the above-mentioned claims The present invention can be appropriately modified and carried out as long as it has the constituent requirements described in the range, exhibits the action of the present invention, and has the effects described below.
【００１３】[0013]
【効果】実施例で得られた内径４０mm，外径６８mm，ロ
ール高さ３．３mmのスピーカエッジを用いて外磁型ドー
ムスピーカを完成した。その周波数−出力音圧，アドミ
タンス特性を図２に示す。また比較のため従来例とし
て、ＰＥＴ織布にアクリル樹脂吸振材を塗布したものを
前記と同様に成形したスピーカエッジを用いて外磁型ド
ームスピーカを完成させた。その周波数−出力音圧，ア
ドミタンス特性を図２に示す。[Effect] An outer magnet type dome speaker was completed by using the speaker edge having an inner diameter of 40 mm, an outer diameter of 68 mm, and a roll height of 3.3 mm obtained in the example. The frequency-output sound pressure and admittance characteristics are shown in FIG. As a conventional example for comparison, an outer magnet type dome speaker was completed by using a PET woven cloth coated with an acrylic resin vibration-absorbing material and molding the speaker edge in the same manner as described above. The frequency-output sound pressure and admittance characteristics are shown in FIG.
【００１４】図２からも明らかなように、本願に係るス
ピーカエッジは、空気の粘性抵抗が大きいことにより、
スピーカのＱ0 が小さくなり、ｆ0 でのピークが抑えら
れて、周波数特性が平坦化されるため、音響特性の優れ
たスピーカが得られる。更に形状付与材を用いる必要が
ないため、製造段階で均一な品質を得やすく、形状付与
材の経時変化によるスピーカエッジの劣化を生じない。As is clear from FIG. 2, the speaker edge according to the present invention has a large viscous resistance of air,
Since Q 0 of the speaker is reduced, the peak at f 0 is suppressed, and the frequency characteristic is flattened, a speaker having excellent acoustic characteristics can be obtained. Further, since it is not necessary to use the shape-imparting material, it is easy to obtain uniform quality at the manufacturing stage, and the deterioration of the speaker edge due to the aging of the shape-imparting material does not occur.
【図１】実施例の構造説明図。FIG. 1 is a structural explanatory view of an embodiment.
【図２】実施例及び従来例の周波数−出力音圧，アドミ
タンス特性図。FIG. 2 is a frequency-output sound pressure and admittance characteristic diagram of an example and a conventional example.
1 ＰＥＴ単繊維 2 ＰＥＴ糸 3 ＰＥＴ繊維束 3a ウレタン樹脂 1 PET monofilament 2 PET yarn 3 PET fiber bundle 3a Urethane resin
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 31:38 4Ｆ (72)発明者 古林 正美 大阪府寝屋川市日新町２番１号 オンキヨ ー株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical indication location B29L 31:38 4F (72) Inventor Masami Furubayashi 2-1, Nisshin-cho, Neyagawa-shi, Osaka Onkyo stock In the company
Claims (2)
た不織布を加熱加圧成形してなることを特徴とするスピ
ーカエッジ。1. A speaker edge comprising a non-woven fabric made of polyethylene terephthalate fiber, which is formed by heating and pressing.
用いた不織布が、少なくとも２本以上のポリエチレンテ
レフタレート単繊維を寄り合わせて成るポリエチレンテ
レフタレート糸を少なくとも２本以上束ねてこの外周を
ウレタン樹脂で覆ったポリエチレンテレフタレート繊維
束を用いた不織布であることを特徴とする請求項１記載
のスピーカエッジ。2. A polyethylene terephthalate fiber in which the non-woven fabric using the polyethylene terephthalate fiber has at least two polyethylene terephthalate yarns formed by laying together at least two or more polyethylene terephthalate single fibers and bundling at least two of them and covering the outer periphery with a urethane resin. The speaker edge according to claim 1, wherein the speaker edge is a non-woven fabric using a bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3259919A JPH0795879B2 (en) | 1991-09-10 | 1991-09-10 | Speaker edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3259919A JPH0795879B2 (en) | 1991-09-10 | 1991-09-10 | Speaker edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0576096A true JPH0576096A (en) | 1993-03-26 |
| JPH0795879B2 JPH0795879B2 (en) | 1995-10-11 |
Family
ID=17340756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3259919A Expired - Lifetime JPH0795879B2 (en) | 1991-09-10 | 1991-09-10 | Speaker edge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795879B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379822A (en) * | 1976-12-24 | 1978-07-14 | Ciba Geigy Ag | Phosphonoocarboxyl hybrid acid derivatives process for preparing same and aqueous system treating method using same |
-
1991
- 1991-09-10 JP JP3259919A patent/JPH0795879B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379822A (en) * | 1976-12-24 | 1978-07-14 | Ciba Geigy Ag | Phosphonoocarboxyl hybrid acid derivatives process for preparing same and aqueous system treating method using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0795879B2 (en) | 1995-10-11 |
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