JPS59132300A - Fully driving type dynamic speaker - Google Patents

Fully driving type dynamic speaker

Info

Publication number
JPS59132300A
JPS59132300A JP584183A JP584183A JPS59132300A JP S59132300 A JPS59132300 A JP S59132300A JP 584183 A JP584183 A JP 584183A JP 584183 A JP584183 A JP 584183A JP S59132300 A JPS59132300 A JP S59132300A
Authority
JP
Japan
Prior art keywords
gap
pole piece
voice coil
magnet
pieces
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
JP584183A
Other languages
Japanese (ja)
Inventor
Tatsuya Watanabe
達也 渡辺
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
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 Clarion Co Ltd filed Critical Clarion Co Ltd
Priority to JP584183A priority Critical patent/JPS59132300A/en
Publication of JPS59132300A publication Critical patent/JPS59132300A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/025Magnetic circuit

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 improve the efficiency, transient response and damping characteristic by inserting only one voice coil to each gap formed by magnet bodies so as to increase the magnetic flux density of the air gap. CONSTITUTION:Plural pole pieces 6a- are stood at an equal pitch from a base plate 6 made of a magnetic substance. Magnets M1- are fixed to the plate 6 among the pieces 6a- poled in the same direction with a required length of air gaps 7- from the pieces 6a-. Further, the voice coil C- arranged to the air gaps 7- so as to surround the magnets M1- is fitted in common to a diaphragm D expanded upward the magets M1- and the pieces 6a-. Thus, each one voice coil is inserted to each air gap 7 respectively in this way. Then, the magnetic flux density of the air gaps is increased, allowing to improve the efficiency, transient response and damping characteristic.

Description

【発明の詳細な説明】 この発明は全面駆動形ダイナミックスピーカに関する。[Detailed description of the invention] The present invention relates to a full-plane drive type dynamic speaker.

従来の全面駆動形ダイナミックスピーカとしては例えば
第1図および第2図に示すようなものがある。図中符号
(1)はベースプレー)%(2)はフレーム、MIM3
M3・・・は磁石体で、これらの磁石体M!・・・はそ
れぞれ角柱状でその対向面側がNSの磁極となるように
磁化されている。そしてこれらの磁石体M、・・・が、
その磁極極性がN−8,S−Nとなるように交互に逆向
きで且つそれぞれ所要の間隔をおいてベースプレート(
1)上に接層されている。各磁石体M1・・・の先端部
にはヨーク(31a (3)b (3)c・・・がそれ
ぞれ接着され、このヨーク同士(3)a−(3)bs 
(3)b  (3)cの間に所要の空隙(4)・・・が
形成されている。そして各ヨーク(各磁石体M1・・・
の磁極部)(3)a・・・を周回するように空隙(4)
の部分に配置された各ボイスコイルC・・・が共通のダ
イアフラムDに取付けられている。(5)はエツジであ
る。
2. Description of the Related Art Conventional full-plane drive type dynamic speakers include those shown in FIGS. 1 and 2, for example. In the figure, code (1) is base play)% (2) is frame, MIM3
M3... is a magnet, and these magnets M! . . . are respectively prismatic and magnetized so that the opposing surfaces thereof serve as NS magnetic poles. And these magnet bodies M,...
The base plate (
1) Layered on top. A yoke (31a (3)b (3)c...) is adhered to the tip of each magnet M1..., and these yokes (3)a-(3)bs
A required gap (4) is formed between (3)b and (3)c. And each yoke (each magnet M1...
(magnetic pole part) (3) air gap (4) surrounding a...
The voice coils C... arranged in the section are attached to a common diaphragm D. (5) is an edge.

そして駆動信号電流がボイスコイルC・・・に通電され
るとダイアフラムD全体が均等に振動して音声再生がな
される。
Then, when the drive signal current is applied to the voice coils C..., the entire diaphragm D vibrates uniformly to reproduce sound.

しかしながらこ□のような従来の全面駆動形グイ1ナミ
ックスピーカにあっては、各磁石体MI M2 M3・
・・はその一方の磁極がベースプレート(1)に接着さ
れていて使用されないため漏洩磁束が多くなシ、さらに
は1つの空隙(4)にそれぞれ2個のボイスコイルC・
が介在しているので空隙長が長くなって、この空隙(4
)部の磁束密度が3000ガウス程度で単体のダイナミ
ックスピーカの%〜%程度に低下してしまう。このため
能率(出力)が後述のように80dB程度に低下すると
ともに過渡応答およびダンピング特性が悪いという問題
点があった。また構成上の点においても所要個数の空隙
(4)・・・を形成するのに要する磁石体M1・・・の
数が増し、さらにはボイスコイルCの巻線作業が複雑化
してコスト高を招くという問題点があった。
However, in a conventional full-plane drive type single-channel speaker like this □, each magnet element MI M2 M3,
... has one of the magnetic poles glued to the base plate (1) and is not used, so there is a lot of leakage magnetic flux.Furthermore, two voice coils C and ... are placed in each air gap (4).
intervening, the gap length becomes longer and this gap (4
) When the magnetic flux density of the part is about 3000 Gauss, it decreases to about % to % of that of a single dynamic speaker. For this reason, there were problems in that the efficiency (output) decreased to about 80 dB as described later, and the transient response and damping characteristics were poor. In addition, in terms of configuration, the number of magnets M1 required to form the required number of air gaps (4) increases, and furthermore, the winding work of the voice coil C becomes complicated, leading to higher costs. There was a problem with inviting people.

この発明はこのような従来の問題点を解決することを目
的としている。
This invention aims to solve these conventional problems.

以下この発明を図面に基づいて説明する。第3図および
第4図はこの発明の実施例を示す図であおよび第2図に
おける部材または部位と同一ないし均等のものは前記と
同一符号を以って示し重複した説明を省略する。
The present invention will be explained below based on the drawings. 3 and 4 are diagrams showing an embodiment of the present invention, and the same or equivalent members or parts as in FIG. 2 are designated by the same reference numerals and redundant explanation will be omitted.

まず構成を説明すると、この発明においてはベースプレ
ート(6)が−例としてFe等の磁性体で作製され、こ
のベースプレート(6)から所要の等間隔で複数個のポ
ールピース体(6)a (61b・・・が立設されてい
る。そしてこれらのポールピース体(6)a・・・ノ各
間に磁石体Ml・・・が、その磁極極性がN−8,N−
8となるように同−向きで且つ当該各ポールピース体(
6)a・・・とけ所要間隙長の空隙(7)・・・を有せ
しめてベースプレート(6)に固着されている。(31
a (3)b・・・は前記と同様のヨークで、ポールピ
ース体(6)a・・・はその高さがこのヨーク(3)a
・・・を含めた磁石体Ml・・・の高さとほぼ同一で、
その長さく第3図縦方向の長さ)も磁石体M1の長さと
ほぼ等しく形成されている。而してこの発明ではポール
ピース体(6)a・・・で一方の磁極(図の例ではS極
)が形成されて49合うポールピース体とヨーク(各磁
石体M1・・・の磁極部)との間(6)a−(3)a 
s (3)a  (6)b 1(6)b  (3)b・
・・に所要の空隙(7)・・・が形成されている。そし
て各磁石体M1におけるヨーク(6)a・・・部分を周
回するようにして空隙部(7)・・・に配置されたボイ
スコイルC・・・が、磁石体M1・・・およびポールピ
ース体(6)a・・・の上方に展設したダイア72ムD
に共通に取付けられている。このようにして前記第2図
に示した従来のものが1つの空隙(4)に2個のボイス
コイルCを介在させたのに対して、この発明では1つの
空隙(7)・・にはそれぞれ1個のボイスコイルCを介
在させている。(8)・・・は背圧逃げ孔で、ダイアフ
ラムDの背圧を逃がすために設けられている。
First, to explain the configuration, in this invention, the base plate (6) is made of a magnetic material such as Fe, and a plurality of pole piece bodies (6) a (61 b ... are erected between each of these pole piece bodies (6)a..., and between each of them a magnet Ml... whose magnetic polarity is N-8, N-
8 in the same direction and each pole piece body (
6) a... is fixed to the base plate (6) with a gap (7)... having a required gap length. (31
a (3) b... is a yoke similar to the above, and the pole piece body (6) a... has a height similar to that of this yoke (3) a.
Almost the same height as the magnet body Ml... including...
Its length (length in the vertical direction in FIG. 3) is also approximately equal to the length of the magnet M1. In this invention, one magnetic pole (in the example shown, the S pole) is formed in the pole piece body (6) a..., and the pole piece body and the yoke (the magnetic pole part of each magnet M1...) are aligned. ) between (6)a-(3)a
s (3)a (6)b 1(6)b (3)b・
A required void (7) is formed in .... Then, the voice coil C... arranged in the gap (7) so as to go around the yoke (6) a... portion of each magnet M1 is connected to the magnet M1... and the pole piece. Diameter 72 D placed above the body (6)a...
are commonly installed in In this way, while the conventional device shown in FIG. 2 has two voice coils C interposed in one gap (4), in this invention, one gap (7)... One voice coil C is interposed in each. (8)... are back pressure relief holes, which are provided to release the back pressure of the diaphragm D.

次に作用を説明する。駆動信号電流でダイアフラムDの
全体が均等に振動して音声再生がなされるという動作原
理は従来のものとほぼ同様である。
Next, the effect will be explained. The operating principle in which the entire diaphragm D vibrates uniformly with the drive signal current to reproduce sound is almost the same as that of the conventional one.

ダイアフラムDの振動の際の背圧は背圧逃げ孔(8)・
・・から外部に逃れる。そしてこのような動作に際して
この発明では1個の空隙(7)にそれぞれ1個のみのボ
イスコイルCが介在されているので、その空隙長は単体
のダイナミックスピーカのものとほぼ同程度にすること
ができる。また磁石体M1・・・、ベースプレート(6
)およびポールピース体(6)a・・・の経路で効果的
に磁気回路が形成される。このため空隙(7)部の磁束
密度が単体のダイナミックスピーカのものと同程度の値
にまで向上する。このようにこの発明のものけボイスコ
イルCの単位横断面積当シの磁束数が増大してその能率
(出力)が第5図中A特性で示すように従来のB特性の
ものと比較してほぼ10dB程度向上する。またこれと
ともに過渡応答およびダンピング特性も向上する。
The back pressure when the diaphragm D vibrates is released through the back pressure relief hole (8).
Escape from ... to the outside. In the case of such an operation, in the present invention, only one voice coil C is interposed in each gap (7), so the gap length can be made approximately the same as that of a single dynamic speaker. can. Also, magnet M1..., base plate (6
) and the pole piece body (6)a... A magnetic circuit is effectively formed. Therefore, the magnetic flux density in the air gap (7) is improved to a value comparable to that of a single dynamic speaker. In this way, the number of magnetic fluxes per unit cross-sectional area of the Mononoke voice coil C of the present invention increases, and its efficiency (output) increases compared to the conventional B characteristic as shown by A characteristic in Figure 5. The improvement is approximately 10 dB. At the same time, transient response and damping characteristics are also improved.

一方、組付けに際しては、所要個数の空隙(4)・・・
を形成するのに要する磁石体M1・・・の個数が減少す
るので生産性の向上が図られる。
On the other hand, when assembling, the required number of gaps (4)...
Since the number of magnet bodies M1 .

以上詳述したようにこの発明によれば磁性体製ノヘース
プレートから複数個のポールビメース体ヲ立設し、この
ポールピース体の各間に磁極極性を同−向きとし且つポ
ールピース体とは所要の空隙を有せしめて磁石体をそれ
ぞれ配設し、さらに各磁石体を周回するようにして空隙
部に配置したボイスコイルのそれぞれを共通のダイアフ
ラムに取付けたから、各空隙にはそれぞれ1個のみのボ
イスコイ省が介在する構成となって空隙長を従来例のも
のより短かくすることができる。また磁石体、ベースプ
レートおよびポールピース体の経路で効果的な磁気回路
が形成されて漏洩磁束が減少する。
As described in detail above, according to the present invention, a plurality of pole vimace bodies are erected from a magnetic head plate, and the magnetic poles are set in the same direction between each of the pole piece bodies, and the pole piece bodies are different from each other. The magnets are arranged with the required air gap, and the voice coils placed in the air gap so as to go around each magnet are attached to a common diaphragm, so there is only one voice coil in each air gap. The structure is such that the voice coil reduction is involved, and the gap length can be made shorter than that of the conventional example. Furthermore, an effective magnetic circuit is formed in the path of the magnet body, base plate, and pole piece body, and leakage magnetic flux is reduced.

したがって上記のことが相まって空隙部の磁束密度が増
大するので能率が向上し、さらには過渡応答オヨヒタン
ピング特性を向上させることができるという効果が得ら
れる。また所要個数の空隙を形成するのに要する磁石体
の数が減少するので組付工数が短縮され、またボイスコ
イルの巻線ないしは取付作業が容易となってコスト低減
を図ることができるという効果が得られる。
Therefore, in combination with the above, the magnetic flux density in the gap increases, so that the efficiency is improved and furthermore, the transient response Oyohittamping characteristics can be improved. In addition, the number of magnets required to form the required number of air gaps is reduced, reducing assembly man-hours, and the voice coil winding or installation work becomes easier, reducing costs. can get.

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

第1図は従来の全面駆動形ダイナミ・ツクスピーカの平
面図、第2図は第1図の■−■線断面図、第3図はこの
発明に係る全面駆動形ダイナミ・ツクスピーカの実施例
を示す一部破断平面図、第4図は第3図の■−IV線断
面図、第5図は第3図の実施例および第1図の従来例の
出力特性を併せ示す特性曲線図である。 2ニア+/−ム3a、3b・・・:ヨーク5:エツジ 
     6:ベースプレート6a、6b・・・:ポー
ルピース体 7;空隙       8:背圧逃げ孔C:ボイスコイ
ル   D=ダイアフラムM1、M2・・・:、磁石体 り2リオン株式会社 代理人 芦 1)直 衛
FIG. 1 is a plan view of a conventional fully driven dynamometer speaker, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is an embodiment of a fully driven dynamometer speaker according to the present invention. FIG. 4 is a partially cutaway plan view, FIG. 4 is a sectional view taken along the line ■-IV in FIG. 3, and FIG. 5 is a characteristic curve diagram showing the output characteristics of the embodiment shown in FIG. 3 and the conventional example shown in FIG. 2 Near+/-mu 3a, 3b...: Yoke 5: Edge
6: Base plate 6a, 6b...: Pole piece body 7; Gap 8: Back pressure relief hole C: Voice coil D = Diaphragm M1, M2...:, Magnet body 2 Rion Co., Ltd. agent Ashi 1) Direct Mamoru

Claims (1)

【特許請求の範囲】[Claims] 磁性体製のベースプレートから略等間隔で複数個のポー
ルピース体を立設し、当該ポールピース体の各間に磁極
極性を同−向きとし且つ前記ポールピース体とは所要の
空隙を有せしめて磁石体を配設し、前記各磁石体を周回
するように前記空隙部に配置したボイスコイルのそれぞ
れを前記磁石体およびポールピース体の上方に展設した
共通のダイア72ムに取付けたことを特徴とする全面駆
動形ダイナミックスピーカ。
A plurality of pole piece bodies are erected from a base plate made of a magnetic material at approximately equal intervals, the magnetic polarity is set in the same direction between each of the pole piece bodies, and there is a required air gap between the pole piece bodies. A magnet body is arranged, and each of the voice coils arranged in the gap so as to go around each of the magnet bodies is attached to a common diaphragm 72 extended above the magnet body and the pole piece body. Features a fully-driven dynamic speaker.
JP584183A 1983-01-19 1983-01-19 Fully driving type dynamic speaker Pending JPS59132300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP584183A JPS59132300A (en) 1983-01-19 1983-01-19 Fully driving type dynamic speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP584183A JPS59132300A (en) 1983-01-19 1983-01-19 Fully driving type dynamic speaker

Publications (1)

Publication Number Publication Date
JPS59132300A true JPS59132300A (en) 1984-07-30

Family

ID=11622238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP584183A Pending JPS59132300A (en) 1983-01-19 1983-01-19 Fully driving type dynamic speaker

Country Status (1)

Country Link
JP (1) JPS59132300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60177594U (en) * 1984-03-22 1985-11-26 三星電子株式会社 Flat diaphragm speaker with leakage magnetic flux prevention piece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60177594U (en) * 1984-03-22 1985-11-26 三星電子株式会社 Flat diaphragm speaker with leakage magnetic flux prevention piece
JPH0432868Y2 (en) * 1984-03-22 1992-08-06

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