JPS60224399A - Dynamic speaker - Google Patents

Dynamic speaker

Info

Publication number
JPS60224399A
JPS60224399A JP8255684A JP8255684A JPS60224399A JP S60224399 A JPS60224399 A JP S60224399A JP 8255684 A JP8255684 A JP 8255684A JP 8255684 A JP8255684 A JP 8255684A JP S60224399 A JPS60224399 A JP S60224399A
Authority
JP
Japan
Prior art keywords
coil
turns
voice coil
coils
current
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
Application number
JP8255684A
Other languages
Japanese (ja)
Inventor
Ayumi Terajima
寺島　歩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP8255684A priority Critical patent/JPS60224399A/en
Publication of JPS60224399A publication Critical patent/JPS60224399A/en
Pending legal-status Critical Current

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

PURPOSE:To obtain a dynamic speaker having a high efficiency with simple constitution by providing a voice coil formed by plural coils connected in parallel. CONSTITUTION:By winding two coils Cb and Cb having numbers Nb of turns twice the number of turns Na of a conventional voice coil Ca in vertical two layers, voice coils 11 are connected in parallel. In this case a current Ib flowing in each coil Cb goes to 1/2 of a current flowing in the coil Ca. However, since the magnetic intensity produced by the coil is in proportion to the current value flowing in the coil and the sequare of the number of turns of the coil, the magnetic intensity produced by one coil Cb becomes approximately twice that of the coil Ca. In this case two coils Cb and Cb are provided, and therefore the magnetic intensity becomes approximately four times. Thus the amplitude of a cone can be made larger without replacement of supply electric power, and ability of a speaker can be improved.

Description

【発明の詳細な説明】 この発明は、ダイナミックスビーカーのボイスコイルの
構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a voice coil for a dynamics beaker.

ダイナミックスビーカー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
流すことにより、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 dynamics beaker inserts a voice coil between a strong magnetic gap, and by passing an audio current from an amplifier through the coil, the coil is moved in the axial direction in response to changes in the current. It emits sound by vibrating a cone.

ダイナミックスビーカーの能率を高める一つの方法は、
ボイスコイルの電流変化に対応するコーンの振幅を大き
くする事である。コーンの振幅はボイスコイルに流れる
電流の大きさとコイルの巻数の関数で与えられ、ボイス
コイルに流れる電流を大きくするか、コイルの巻数を多
くすればスピーカーの能率を高くすることができる。し
かし一般にコイルの巻数を多くすれば抵抗も増大するの
でコイルを流れる電流が減少し、かえってコーンの振幅
を小さくしてスピーカーの能率を下げる結果となる。One way to increase the efficiency of a dynamics beaker is to
The purpose is to increase the amplitude of the cone that corresponds to the change in voice coil current. The amplitude of the cone is given as a function of the magnitude of the current flowing through the voice coil and the number of turns in the coil, and the efficiency of the speaker can be increased by increasing the current flowing through the voice coil or by increasing the number of turns in the coil. However, in general, increasing the number of turns in the coil increases the resistance, which reduces the current flowing through the coil, which in turn reduces the amplitude of the cone and lowers the efficiency of the speaker.

本発明は、上記問題を解決して能率の高いダイナミック
スビーカーを得ることを目的としている。The present invention aims to solve the above problems and obtain a highly efficient dynamics beaker.

図は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ビーカーの断面図、第２図はボイ
スコイルの回路図であり、（Ａ）は従来のボイスコイル
、（Ｂ）は本発明のボイスコイルを示したものである。The figures show one embodiment of the present invention. FIG. 1 is a cross-sectional view of a dynamics beaker according to the present invention, FIG. 2 is a circuit diagram of a voice coil, and (A) is a conventional voice coil; B) shows the voice coil of the present invention.

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およびダンパ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Ｃａ　Ｉ　Ｃｂはコイル、Ｉａ＋ＩｂはコイルＣ
ａ、Ｃｂを流れる電流、Ｎ、ａ＋ＮｂはコイルＣａ　＋
　Ｃｂの巻数である。In Figure 1, 1 is a magnet, 2 is a yoke, 3 is a center ball, 4 is a substrate, 5 is a magnetic gap provided in magnetic circuits 1, 2, 3.4, 6 is a frame, and 7 is an edge on the frame 6. 8 and a cone supported by a damper 9, 10 a dustproof cap, 11 a voice coil wound around the base cylinder 7a of the cone, 12 a terminal of the voice coil, and Ca I Cb in FIG. 2 a coil, Ia+Ib. is coil C
a, current flowing through Cb, N, a+Nb is coil Ca +
It is the number of turns of Cb.

本実施例のボイスコイル１１は、従来のボイスコイルＣ
ａの巻数Ｎａの２倍の巻数Ｎｂを有する２つのコイルｃ
ｂ、ｃｂを上下２層に巻回して並列接続したものである
（第２図（Ｂ）参照）。The voice coil 11 of this embodiment is a conventional voice coil C.
Two coils c with the number of turns Nb twice the number of turns Na of a
b and cb are wound in two layers, upper and lower, and connected in parallel (see Fig. 2 (B)).

コイルｃｂはコイルＣａの２倍の巻数Ｎｂを有しており
、可聴周波数帯域においてはコイルの抵抗のほとんどが
直流抵抗であるから、コイルｃｂの抵抗はコイルＣａの
抵抗の約２倍となり、電流Ｉｂはほぼ１　ａ　／　２と
なる。そこでコイルｃｂを２つ並列に接続してボイスコ
イルを形成すると、全体として抵抗の大きさを変えずに
巻数をＮａの４倍にしたボイスコイルを得ることができ
る。この場合各コイルｃｂに流れる電流ＩｂはコイルＣ
ａに流れる電流Ｉａの１／２となるが、コイルにより生
起される磁力はコイルの巻数の自乗および当該コイルを
流れる電流値に比例するから、−個のコイルｃｂによっ
て生起される磁力はコイルＣａにおいて生起される磁力
の約２倍となり、コイルｃｂが２個設けられているので
、結局本発明のボイスコイルで生起される磁力は従来の
ボイスコイルの約４倍と、なる。また、３倍の巻数を有
するコイルを３つ並列に接続したボイスコイルでは生起
される磁力は従来のボイスコイルの約９倍となる。した
がってアンプの供給電力を替えることなくコーンの振幅
を大きくすることができ、ダイナミックスビーカーの能
率を高めることができる。Coil cb has twice the number of turns Nb as coil Ca, and since most of the resistance of the coil is DC resistance in the audio frequency band, the resistance of coil cb is approximately twice that of coil Ca, and the current Ib is approximately 1 a/2. Therefore, by connecting two coils cb in parallel to form a voice coil, it is possible to obtain a voice coil with four times the number of turns as Na without changing the resistance as a whole. In this case, the current Ib flowing through each coil cb is the coil C
However, since the magnetic force generated by a coil is proportional to the square of the number of turns of the coil and the value of the current flowing through the coil, the magnetic force generated by - coils cb is 1/2 of the current Ia flowing through coil Ca. Since two coils cb are provided, the magnetic force generated by the voice coil of the present invention is approximately four times that of the conventional voice coil. Furthermore, in a voice coil in which three coils having three times the number of turns are connected in parallel, the magnetic force generated is about nine times that of a conventional voice coil. Therefore, the amplitude of the cone can be increased without changing the power supplied to the amplifier, and the efficiency of the dynamics beaker can be increased.

実際には機械損失や質量損失が増加するので、上記の如
く構成したボイスコイルの巻数と能率とは必ずしも比例
しないが、最終的には供給電力の８０パーセント近くを
音声出力として取り出すことができる。In reality, mechanical loss and mass loss increase, so the number of turns and efficiency of the voice coil configured as described above are not necessarily proportional, but in the end nearly 80% of the supplied power can be extracted as audio output.

以上のように本発明のダイナミックスビーカーは、並列
に接続した複数のコイルｃｂ、ｃｂで形成されたボイス
コイル１１を有するものであり、簡単な構造で極めて能
率の高いダイナミックスビーカーを得ることができると
いう効果がある。As described above, the dynamics beaker of the present invention has the voice coil 11 formed by a plurality of coils cb and cb connected in parallel, and it is possible to obtain an extremely efficient dynamics beaker with a simple structure. effective.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例を示したもので、第１図はダイナ
ミックスビーカーの断面図、第２図はボイスコイルの回
路図であり、（Ａ）は従来のボイスコイルを、（Ｂ）は
本発明のボイスコイルを示したものである。 図中、７はコーン、１１はボイスコイル、Ｃｂはコイル
、Ｉｂは電流、Ｎｂは巻数である。 代理人　弁理士　西　孝雄 第１図 第２図The figures show one embodiment of the present invention. Figure 1 is a cross-sectional view of a dynamics beaker, and Figure 2 is a circuit diagram of a voice coil. (A) is a conventional voice coil, and (B) is a circuit diagram of a voice coil. 1 shows a voice coil of the present invention. In the figure, 7 is a cone, 11 is a voice coil, Cb is a coil, Ib is a current, and Nb is the number of turns. Agent: Patent Attorney Takao NishiFigure 1Figure 2

Claims (1)

【特許請求の範囲】[Claims] （１）並列に接続した複数のコイルで形成されたボイス
コイルを有する、ダイナミックスビーカー。(1) A dynamics beaker that has a voice coil formed by multiple coils connected in parallel.
JP8255684A 1984-04-23 1984-04-23 Dynamic speaker Pending JPS60224399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8255684A JPS60224399A (en) 1984-04-23 1984-04-23 Dynamic speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8255684A JPS60224399A (en) 1984-04-23 1984-04-23 Dynamic speaker

Publications (1)

Publication Number Publication Date
JPS60224399A true JPS60224399A (en) 1985-11-08

Family

ID=13777765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8255684A Pending JPS60224399A (en) 1984-04-23 1984-04-23 Dynamic speaker

Country Status (1)

Country Link
JP (1) JPS60224399A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546647A (en) * 1978-09-29 1980-04-01 Mitsubishi Electric Corp Speaker system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546647A (en) * 1978-09-29 1980-04-01 Mitsubishi Electric Corp Speaker system

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