JPS61152200A - Dynamic speaker - Google Patents
Dynamic speakerInfo
- Publication number
- JPS61152200A JPS61152200A JP28153584A JP28153584A JPS61152200A JP S61152200 A JPS61152200 A JP S61152200A JP 28153584 A JP28153584 A JP 28153584A JP 28153584 A JP28153584 A JP 28153584A JP S61152200 A JPS61152200 A JP S61152200A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- voice coil
- winding
- coils
- sectional area
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、並列接続した複数個のコイルで形成したボ
イスコイルを有するダイナミックスピーカの改良に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a dynamic speaker having a voice coil formed of a plurality of coils connected in parallel.
ダイナミックスピーカは、強い磁気ギャップの間にボイ
スコイルを挿入し、アンプからの音声電流を該コイルに
通電することにより、電流の変化に対応させて該コイル
を軸方向に運動させ、ボイスコイルに連結されているコ
ーンを振動させて音を放射するものである。A dynamic speaker inserts a voice coil between a strong magnetic gap and connects it to the voice coil by passing an audio current from an amplifier through the coil, causing the coil to move in the axial direction in response to changes in the current. It emits sound by vibrating the cone that is attached to it.
而して、このボイスコイルを並列接続された巻数の等し
い複数個のコイルで形成すると、例えばコイルを２個と
した場合にはボイスコイルの全体抵抗を変えずに巻数を
並列接続されたコイルの個数の２倍に相当する４倍に高
め得るので、音声電流が各々のコイルに分流することを
考慮しても、ボイスコイルに働く電磁力はコイルの個数
の２乗の４倍にできて、能率の高いダイナミックスピー
カが得られることが分かった（特願昭和５９−８２５５
６号）。If this voice coil is formed of multiple coils connected in parallel with the same number of turns, for example, if there are two coils, the number of turns of the coils connected in parallel can be increased without changing the overall resistance of the voice coil. Since the number of coils can be increased by four times, which is twice the number of coils, even considering that the voice current is divided into each coil, the electromagnetic force acting on the voice coil can be increased to four times the square of the number of coils. It was found that a highly efficient dynamic speaker could be obtained (patent application 1982-8255).
No. 6).
しかしながら、並列接続すべきコイルは全体として多段
巻として１個のボイスコイルにまとめな・ければならな
いので、巻数の増加はボイスコイル全体の重量、体積の
増加をもたらす結果、磁気ギャップを大きくしなければ
ならないこと、機械的エネルギー損失が増加すること等
のため、却って能率を低下せしめることもあり得るとい
う欠点があった。However, since the coils to be connected in parallel must be combined into a single voice coil as a multi-stage winding, an increase in the number of turns results in an increase in the weight and volume of the voice coil as a whole, and as a result, the magnetic gap must be increased. However, this method has the disadvantage that it may even reduce efficiency due to increased mechanical energy loss.
本発明は、上記欠点を解決して、高能率でしかも実用性
の高い多段巻ボイスコイルを有するダイナミックスピー
カを得ることを目的としており、並列接続した巻数の等
しい複数個のコイルを多段巻にして形成したボイスコイ
ルを有し、且つ、前記コイルの巻線の断面積が０．０３
ｍｍ”以下であるダイナミックスピーカを提供しようと
するものである。The present invention aims to solve the above-mentioned drawbacks and obtain a dynamic speaker having a multi-stage voice coil that is highly efficient and highly practical. a voice coil formed therein, and the cross-sectional area of the winding of the coil is 0.03.
The purpose is to provide a dynamic speaker with a diameter of less than 2 mm.
図は、並列接続したコイルの個数を２個とした場合の本
発明の一実施例を示したもので、第１図は本発明に係る
ダイナミックスピーカの断面図、第２図はボイスコイル
の回路図である。第１図中、１はマグネット、２はヨー
ク、３はセンタボール、４は基板、５は磁気回路１，２
，３．４に設けられた磁気ギャップ、６はフレーム、７
はフレーム６にエツジ８及びダンパ９により支持された
コーン、１０は防塵キャップ、１１はコーンの基部円筒
７ａに巻回されたボイスコイル、１２はボイスコイルの
端子であり、第２図のＣｂ、Ｃｂは並列接続されて、上
下２層に巻回されて１個のボイスコイル１１を形成する
コイルであり、ＮｂはコイルＣｈの巻数を示す。The figures show an embodiment of the present invention in which the number of coils connected in parallel is two. Figure 1 is a cross-sectional view of a dynamic speaker according to the present invention, and Figure 2 is a voice coil circuit. It is a diagram. In Figure 1, 1 is a magnet, 2 is a yoke, 3 is a center ball, 4 is a board, and 5 is a magnetic circuit 1, 2.
, 3. The magnetic gap provided in 4, 6 the frame, 7
1 is a cone supported by an edge 8 and a damper 9 on a frame 6, 10 is a dustproof cap, 11 is a voice coil wound around the base cylinder 7a of the cone, and 12 is a terminal of the voice coil. Cb is a coil connected in parallel and wound in upper and lower layers to form one voice coil 11, and Nb indicates the number of turns of the coil Ch.
コイルの個数を２個とした本発明のダイナミックスピー
カの能率について、コイルＣｂの巻線断面積に着目し、
従来の１個のコイルからなるボイスコイルを有するダイ
ナミックスピーカとの比較において実験を行い、第３図
に曲線すで示す結果を得た。ただし、本発明のコイルＣ
ｂの巻数Ｎｂは従来の１個のコイルの巻数の２倍とした
。Regarding the efficiency of the dynamic speaker of the present invention with two coils, focusing on the winding cross-sectional area of coil Cb,
An experiment was conducted in comparison with a conventional dynamic speaker having a voice coil consisting of one coil, and the results shown in the curve shown in FIG. 3 were obtained. However, the coil C of the present invention
The number of turns Nb of b is twice the number of turns of one conventional coil.
第３図において、従来の１個のコイルからなるボイスコ
イルを有するダイナミックスピーカの能率は、巻線断面
積が約０．０４７ｍｍｚにおいてピークを生じる（第３
図の曲線ａ）のに対し、２個のコイルＣｍ、Ｃｂを並列
接続して、その各々を内層コイルと外層コイルの２段巻
としてボイスコイルを形成した本発明の場合には、能率
のピークは巻線断面積が約０．０１５＋ｓｍ”において
生じ、且つ、そのピーク値は従来のものの２倍強に達す
る（同図の曲線ｂ）。しかしながら、巻線の断面積が０
．００２５ＩＩＩｍ！ヨリ小さい場合、及び、０．０３
１ＩＩＩＩＩｚヨり大きい場合には、従来のもののピー
ク値より能率は悪くなる。In Fig. 3, the efficiency of a conventional dynamic speaker having a single voice coil peaks at a winding cross-sectional area of approximately 0.047 mmz (the third
In contrast to curve a) in the figure, in the case of the present invention in which two coils Cm and Cb are connected in parallel and each of them is wound in two stages of an inner layer coil and an outer layer coil to form a voice coil, the efficiency peaks. occurs when the cross-sectional area of the winding is approximately 0.015+sm", and its peak value reaches more than twice that of the conventional one (curve b in the same figure). However, when the cross-sectional area of the winding is 0.015+sm"
．． 0025IIIm! If the twist is small, and 0.03
If it is larger than 1IIIz, the efficiency will be worse than the peak value of the conventional one.
本発明のダイナミックスピーカの能率曲線が第３図の曲
＆９１ｂの如くなる理由は、２段巻ボイスコイルの採用
によって能率は本来４倍にまで高め得るのであるが、前
述の如くボイスコイルの重量、体積の増加等があるため
それが達成できないこと、巻線断面積が大きいときはこ
れらのマイナス要因が顕著に表面化すること、逆社巻線
断面積が小さいときには直流抵抗の増加による熱損失が
効いてくることによると考えられる。The reason why the efficiency curve of the dynamic speaker of the present invention is as shown in Figure 3, track &91b is that the efficiency can be increased up to four times by adopting a two-stage voice coil, but as mentioned above, the weight of the voice coil, This cannot be achieved due to an increase in volume, etc., when the cross-sectional area of the winding is large, these negative factors become noticeable, and when the cross-sectional area of the reverse winding is small, heat loss due to increased DC resistance is effective. This is thought to be due to the fact that
従って、コイルを３個並列とした場合の能率曲線は、第
３図に曲ｗＡｃで示す如くなり、並列接続されるコイル
の個数が増加するほど能率曲線は第３図の左側に表れ、
そのピーク値も高くなると考えられる。そして、従来の
ものより能率を高く出来るのは、巻線の断面積が０．０
３＋ｕ＋”以下の場合であり、コイルの個数が増大する
ほどコイルの線径を小さくしなければならない。Therefore, the efficiency curve when three coils are connected in parallel is as shown by the curve wAc in Fig. 3, and as the number of coils connected in parallel increases, the efficiency curve appears on the left side of Fig. 3.
The peak value is also considered to be high. The cross-sectional area of the winding is 0.0 which makes it more efficient than the conventional one.
3+u+'' or less, and as the number of coils increases, the wire diameter of the coil must be made smaller.
以上のように、本発明のダイナミックスピーカは、断面
積が０．０３＋ｗｍ”以下の巻線からなる巻数の等しい
２個のコイルを多段巻にしてなる゛ボイスコイル１′１
を有するものであり、簡単な構造で従来の単一コイルか
らなるボイスコイルを有するものより高い能率を発揮し
得るという効果がある。加えて、２個のコイルＣｂ、Ｃ
ｂの巻線断面積が従来のコイルより小さいので、ボイス
コイル１１の重量、体積の増加を避けることができ、更
にこれらのコイルを多段巻としているので巻数の多いボ
イスコイルをコンパクトに形成することができ、実用性
に富むという効果がある。As described above, the dynamic speaker of the present invention has a voice coil 1'1 formed by multi-stage winding of two coils each having an equal number of turns and each having a cross-sectional area of 0.03+wm" or less.
It has a simple structure and has the effect of being able to exhibit higher efficiency than the conventional one having a voice coil consisting of a single coil. In addition, two coils Cb, C
Since the cross-sectional area of the winding b is smaller than that of a conventional coil, an increase in the weight and volume of the voice coil 11 can be avoided, and since these coils are wound in multiple stages, a voice coil with a large number of turns can be formed compactly. It has the effect of being highly practical.
図は本発明の一実施例を示したもので、第１図はダイナ
ミックスピーカの断面図、第２図はボイ・ ゛スコイル
の回路図、第３図はコイルの巻線の断面積と能率との関
係を示すグラフである。
図中、ｌはマグネット、２はヨーク、３はセンタボール
、５は磁気ギャップ、７はコーン、ｌｉはボイスコイル
、曲線ａは従来のダイナミックスピーカの能率曲線、曲
線、ｂ及びＣはコイルを２及び３個並列としたときの本
発明のダイナミックスピーカの能率曲線である。The figures show one embodiment of the present invention. Figure 1 is a cross-sectional view of a dynamic speaker, Figure 2 is a circuit diagram of a voice coil, and Figure 3 is a diagram showing the cross-sectional area and efficiency of the winding of the coil. It is a graph showing the relationship between. In the figure, l is the magnet, 2 is the yoke, 3 is the center ball, 5 is the magnetic gap, 7 is the cone, li is the voice coil, curve a is the efficiency curve of a conventional dynamic speaker, curve b and C are the coils. and an efficiency curve of the dynamic speaker of the present invention when three speakers are connected in parallel.
Claims (1)
にして形成したボイスコイルを有し、前記コイルは０．
０３ｍｍ＾２以下の断面積を有する巻線からなることを
特徴とする、ダイナミックスピーカ。1. It has a voice coil formed by multi-stage winding of a plurality of coils connected in parallel with the same number of turns, and the coil has a 0.
A dynamic speaker comprising a winding wire having a cross-sectional area of 0.3 mm^2 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28153584A JPS61152200A (en) | 1984-12-25 | 1984-12-25 | Dynamic speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28153584A JPS61152200A (en) | 1984-12-25 | 1984-12-25 | Dynamic speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61152200A true JPS61152200A (en) | 1986-07-10 |
Family
ID=17640522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28153584A Pending JPS61152200A (en) | 1984-12-25 | 1984-12-25 | Dynamic speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61152200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807295A (en) * | 1987-08-18 | 1989-02-21 | Dumbroski And Hanson Industrial Designs, Inc. | Loudspeaker |
-
1984
- 1984-12-25 JP JP28153584A patent/JPS61152200A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4807295A (en) * | 1987-08-18 | 1989-02-21 | Dumbroski And Hanson Industrial Designs, Inc. | Loudspeaker |
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