JPH07203589A - Bi-direction radiation speaker - Google Patents
Bi-direction radiation speakerInfo
- Publication number
- JPH07203589A JPH07203589A JP5353957A JP35395793A JPH07203589A JP H07203589 A JPH07203589 A JP H07203589A JP 5353957 A JP5353957 A JP 5353957A JP 35395793 A JP35395793 A JP 35395793A JP H07203589 A JPH07203589 A JP H07203589A
- Authority
- JP
- Japan
- Prior art keywords
- center
- speaker
- magnetic circuit
- ring
- magnetic
- 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
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種の音響機器に配設
されて、磁気回路を中心にして前後双方向に音響を輻射
する漏洩磁気の少ないスピーカに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker which is installed in various kinds of audio equipment and which radiates sound back and forth centering on a magnetic circuit with little leakage magnetism.
【０００２】[0002]
【従来の技術】従来この種のスピーカ３０は、図３に示
した様に、ヨーク３１、トッププレート３２及びマグネ
ット３５から構成された磁気回路３４を有し、ヨーク３
１とトッププレート３２の間には円環状磁気空隙３３が
形成されており、該磁気回路３４にフレーム４０が装着
され、外部の電気入力に接続されたボイスコイル３６
が、前記磁気空隙３３に遊嵌的に支持されるように、該
ボイスコイル３６を巻着したボイスコイルボビン３７に
同心的に固着したダンパ３８、振動板３９等から形成さ
れる振動系によって、前記フレーム４０に取り付けられ
ている。４１はダストキヤップ、４２は振動板３９の外
周をフレーム４０に押し付けるガスケットである。2. Description of the Related Art Conventionally, a speaker 30 of this type has a magnetic circuit 34 composed of a yoke 31, a top plate 32 and a magnet 35, as shown in FIG.
A ring-shaped magnetic gap 33 is formed between the top plate 32 and the top plate 32, a frame 40 is attached to the magnetic circuit 34, and a voice coil 36 is connected to an external electric input.
By a vibration system formed by a damper 38, a vibration plate 39, and the like, which are concentrically fixed to a voice coil bobbin 37 around which the voice coil 36 is wound so as to be loosely supported in the magnetic gap 33. It is attached to the frame 40. Reference numeral 41 is a dust cap, and 42 is a gasket for pressing the outer periphery of the diaphragm 39 against the frame 40.
【０００３】[0003]
【発明が解決しようとする課題】したがって、従来のこ
の種のスピーカ３０の磁気回路３４においては、マグネ
ット３５の周辺部からの磁気漏洩が大きく、周辺の他の
機器に磁気的な影響を与える恐れが多分にあった。ま
た、磁気空隙３３を１組しか有しないので、単体の振動
板３９を有する１組の振動系しか取り付けられなかった
ので、一方向だけしか音響を輻射できないという問題が
あった。Therefore, in the conventional magnetic circuit 34 of the speaker 30 of this type, the magnetic leakage from the peripheral portion of the magnet 35 is large, and there is a risk of magnetically affecting other peripheral devices. Was probably there. Further, since there is only one set of the magnetic gaps 33, only one set of the vibration system having the single vibrating plate 39 can be attached, so that there is a problem that the sound can be radiated only in one direction.
【０００４】そこで、本発明は、このような従来のスピ
ーカ３０が有していた課題を解決するために、図１に示
すように、リング状マグネット５を装着した円環状磁気
空隙３を形成した通常の外磁型磁気回路のセンターポー
ル２を後方に延長して延長部２ａを形成するとともに、
トッププレート６の外縁を外方に拡大延長して、椀形の
外部ヨーク４の外端縁に接合し、前記ヨーク４の中心に
設けた中心孔と前記センターポール２の延長部２ａとの
間に円環状磁気空隙３ａを形成することによって、リン
グ状マグネット５の表裏両面方向に円環状磁気空隙３，
３ａを形成した構成により、双方向に音響輻射を可能に
するとともに、漏洩磁気を極小にした磁気回路１５を装
着した双方向輻射スピーカ２３を提供しようとするもの
である。Therefore, in order to solve the problem of the conventional speaker 30 according to the present invention, as shown in FIG. 1, an annular magnetic gap 3 having a ring magnet 5 is formed. The center pole 2 of a normal outer magnet type magnetic circuit is extended rearward to form an extension 2a, and
The outer edge of the top plate 6 is enlarged and extended outwardly and joined to the outer edge of the bowl-shaped outer yoke 4, and between the center hole provided at the center of the yoke 4 and the extension portion 2a of the center pole 2. By forming the annular magnetic gap 3a in the annular magnetic gap 3, the annular magnetic gap 3a is formed in both front and back directions of the ring-shaped magnet 5.
It is intended to provide a bidirectional radiating speaker 23 equipped with the magnetic circuit 15 that minimizes the leakage magnetism while enabling acoustic radiation in both directions by the configuration in which 3a is formed.
【０００５】[0005]
【課題を解決するための手段】該目的を達成するための
本発明の構成を、実施例に対応する図１及び図２を用い
て説明すると、本発明は、リング状マグネット５を装着
した、円環状磁気空隙３を形成した磁気回路１５におい
て、その内部プレート１の中心に垂直に立設されたセン
ターポール２の下端を内部プレート１の後方に延長した
延長端２ａを形成するとともに、トッププレート６の外
縁を外方に拡大延長して、椀形の外部ヨーク４の外端縁
に接合し、前記外部ヨーク４の中心に設けた中心孔と前
記センターポール２の延長端２ａとの間に円環状磁気空
隙３ａを形成して、リング状マグネット５の表裏両面方
向に円環状磁気空隙３，３ａを形成した磁気回路１５を
装着した構成の双方向輻射スピーカ２３である。The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 and 2 corresponding to the embodiments. In the present invention, a ring-shaped magnet 5 is mounted, In the magnetic circuit 15 in which the annular magnetic gap 3 is formed, an extension end 2a is formed by extending the lower end of the center pole 2 standing upright at the center of the inner plate 1 to the rear of the inner plate 1 and the top plate. The outer edge of 6 is expanded and extended outwardly, joined to the outer edge of the bowl-shaped outer yoke 4, and between the center hole provided at the center of the outer yoke 4 and the extended end 2a of the center pole 2. A bidirectional radiating speaker 23 having a configuration in which a magnetic circuit 15 having an annular magnetic gap 3a formed therein and annular magnetic gaps 3 and 3a formed in both front and back directions of a ring-shaped magnet 5 is mounted.
【０００６】[0006]
【作用】従って、本発明の双方向輻射スピーカ２３は、
このような構造としたものであるから、該磁気回路１５
の磁気空隙３，３ａを中心として、表裏両外面に取り付
けたフレーム１０，２０に、それぞれ振動板９，１９、
ボイスコイル７ａ，１７ａ、及び同ボビン７，１７、ダ
ンパ８，１８等を同心的に組み立て接合した音響輻射振
動系の外周部を装着することにより、磁気回路１５の双
方向に音響を輻射することができる。Therefore, the bidirectional radiation speaker 23 of the present invention is
Since the magnetic circuit 15 has such a structure,
The magnetic gaps 3 and 3a are centered on the frames 10 and 20 attached to the outer surfaces of the front and back, respectively, and the diaphragms 9 and 19, respectively.
Radiating sound in both directions of the magnetic circuit 15 by mounting the outer peripheral part of the acoustic radiation vibration system in which the voice coils 7a and 17a, the bobbins 7 and 17, the dampers 8 and 18 and the like are concentrically assembled and joined. You can
【０００７】その結果、スピーカ２３の軸上において前
後双方向に、また、いずれか片方の音響輻射振動系の振
動板９（，１９）からの音響を、他方の振動板１９（，
９）からの音響と同一方向に輻射できる反射形のキヤビ
ネットに装着することによって、２個の振動板９，１９
の音圧を互いに一方向に相加えることができる。また、
この場合、前後の振動板９，１９の特性を例えばウーフ
ァとトゥイータのように変化を与えて装置することもで
きて、単体のスピーカで種々の特性を有せしめることが
できる。また、トッププレート６の外方に拡大延長した
外縁を、椀形の外部ヨーク４の外端縁に接合してあるの
で、リング状マグネット５の周辺部すなわち、内部プレ
ート１又はトッププレート６との接合部等から漏洩する
漏洩磁気をシールドできるので、スピーカ２３の周辺の
他の機器に磁気的悪影響を及ぼす恐れを解消できる。As a result, the sound from the diaphragm 9 (, 19) of either one of the acoustic radiation vibrating systems on the axis of the speaker 23 in the front-back direction and the sound of the other diaphragm 19 (,
9) by attaching to a reflective type cabinet that can radiate in the same direction as the sound from 9).
The sound pressures can be applied in one direction to each other. Also,
In this case, the front and rear diaphragms 9 and 19 can be changed in characteristics such as a woofer and a tweeter, and a single speaker can have various characteristics. Further, since the outer edge of the top plate 6 which is enlarged and extended outwardly is joined to the outer edge of the bowl-shaped outer yoke 4, the outer edge of the ring-shaped magnet 5, that is, the inner plate 1 or the top plate 6 Since it is possible to shield the leakage magnetism that leaks from the joint portion or the like, it is possible to eliminate the possibility of magnetically adversely affecting other devices around the speaker 23.
【０００８】[0008]
【実施例】以下本発明の実施例について図面に基づいて
説明する。図中、図１及び図２は、本発明の１実施例を
示す図であって、図１は、本発明のスピーカの断面図で
ある。図２は本発明スピーカに使用する磁気回路の断面
図である。図１及び図２に示すように、１は磁気的に軟
らかい軟鉄を素材とした平円盤状の内部プレートであっ
て、その中心にセンターポール２を垂直に立設してあ
る。前記センターポール２を内部プレート１の後方に延
長して延長部２ａを形成してある。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing an embodiment of the present invention, and FIG. 1 is a sectional view of a speaker of the present invention. FIG. 2 is a sectional view of a magnetic circuit used in the speaker of the present invention. As shown in FIGS. 1 and 2, reference numeral 1 denotes a flat disc-shaped inner plate made of magnetically soft soft iron, and a center pole 2 is vertically provided at the center of the inner plate. The center pole 2 is extended rearward of the inner plate 1 to form an extension 2a.
【０００９】そして、リング状マグネット５を前記内部
プレート１の上に同心的に載置し、さらにその上にトッ
ププレート６を載置して、該トッププレート６の中心に
穿設した孔と、前記センターポール２との間に円環状磁
気空隙３形成してある。また、トッププレート６の外縁
を外方に拡大延長して、椀形の外部ヨーク４の外端縁に
接合して、椀形ヨーク４のボトムの中心に穿設した中心
孔と、前記センターポール２の延長部２ａとの間に円環
状磁気空隙３ａを形成してある。Then, the ring-shaped magnet 5 is concentrically placed on the inner plate 1, the top plate 6 is further placed thereon, and a hole formed at the center of the top plate 6, An annular magnetic gap 3 is formed between the center pole 2 and the center pole 2. Further, the outer edge of the top plate 6 is enlarged and extended outwardly, joined to the outer edge of the bowl-shaped outer yoke 4, and a center hole formed at the center of the bottom of the bowl-shaped yoke 4 and the center pole. An annular magnetic gap 3a is formed between the two extended portions 2a.
【００１０】したがって磁気回路１５は、リング状マグ
ネット５を中心にして、前後に磁気空隙３，３ａを有す
る構造の磁気回路である。かかる構造の磁気回路１５の
前後両面にフレーム１０，２０をそれぞれ取り付け、外
部の電気入力に接続されるボイスコイル７ａ，１７ａ
が、前記磁気空隙３，３ａ内に遊嵌的に支持されるよう
に、該ボイスコイル７ａ，１７ａを巻着したボイスコイ
ルボビン７，１７に同心的に固着したダンパ８，１８、
振動板９，１９等から形成される音響輻射振動系によっ
て、前記フレーム１０，２０に取り付けられている。１
１，２１はダストキヤップ、１２，２２は振動板９，１
９の外周をフレーム１０，２０に押し付けるガスケット
である。Therefore, the magnetic circuit 15 is a magnetic circuit having a structure having magnetic gaps 3 and 3a in the front and back of the ring-shaped magnet 5. Frames 10 and 20 are attached to the front and rear surfaces of the magnetic circuit 15 having such a structure, respectively, and voice coils 7a and 17a are connected to external electric inputs.
Is concentrically secured to the voice coil bobbins 7, 17 around which the voice coils 7a, 17a are wound so as to be loosely supported in the magnetic gaps 3, 3a.
It is attached to the frames 10 and 20 by an acoustic radiation vibration system formed of diaphragms 9 and 19. 1
1, 21 are dust caps, 12 and 22 are diaphragms 9 and 1.
It is a gasket that presses the outer periphery of 9 against the frames 10 and 20.
【００１１】このように、本発明スピーカ２３は、リン
グ状マグネット５の表裏両面方向に円環状磁気空隙３，
３ａを形成した構成により、磁気回路１５の前後双方向
に音響を輻射することが可能である。前述のように構成
された本実施例のデュアルギヤップ磁気回路を有するス
ピーカについて、その動作を説明する。ボイスコイル
７、１７には同一、またはそれぞれ独立した信号源によ
る入力が印加され、振動板９、１９をそれぞれ独立に駆
動させることができる。As described above, the speaker 23 of the present invention has the ring-shaped magnet 5 with the annular magnetic gaps 3 in the front and back directions.
With the configuration in which 3a is formed, it is possible to radiate sound in both the front and rear directions of the magnetic circuit 15. The operation of the speaker having the dual gearup magnetic circuit of this embodiment configured as described above will be described. Inputs from the same or independent signal sources are applied to the voice coils 7 and 17, and the diaphragms 9 and 19 can be driven independently.
【００１２】この２組のスピーカを動作できることは多
くの利点がある。センターポール２の外形を上部、下部
とも同一径として構成したスピーカとして説明してある
が、勿論異なる径であってもよい。すなわち、一方を低
音輻射用スピーカとして使用し、他方を高音輻射用スピ
ーカとして使用すれば２ウエイスピーカとしてＨｉＦｉ
再生上極めて良好な音質で再生が可能となる。さらに異
なるタイプのスピーカを取り付けることにより各種の音
響効果により多様な音質の再生が可能である。以上本発
明の代表的と思われる実施例について説明したが、本発
明は必ずしもこれらの実施例構造のみに限定されるもの
ではなく、本発明にいう前記の構成要件を備え、かつ、
本発明にいう目的を達成し、以下にいう効果を有する範
囲内において適宜改変して実施することができるもので
ある。Being able to operate these two sets of speakers has many advantages. Although the center pole 2 is described as a speaker in which the outer shape is the same for both the upper part and the lower part, of course, the speaker may have different diameters. That is, if one is used as a speaker for low-frequency radiation and the other is used as a speaker for high-frequency radiation, a two-way speaker is used as a HiFi.
Playback is possible with extremely good sound quality. Furthermore, by attaching different types of speakers, various sound effects can be reproduced with various sound effects. Although the examples considered to be typical of the present invention have been described above, the present invention is not necessarily limited only to the structures of these examples, and includes the above-mentioned constituents referred to in the present invention, and
The present invention can be carried out by appropriately modifying it within a range that achieves the object of the present invention and has the following effects.
【００１３】[0013]
【発明の効果】以上の説明から既に明らかなように、本
発明のスピーカは、その装着した磁気回路は単体のリン
グ状マグネットの使用効率は極めてよく、又、磁気漏洩
の極めて少ない磁気回路であって、一個の磁気回路の前
後双方向に、２組のスピーカを動作させることができ、
ＨｉＦｉ再生上極めて優秀なスピーカである。また、２
組のスピーカを別々に組み立てる場合に比して、部品材
料コスト及び工数の削減が可能となり、よってコストダ
ウンを図り得る顕著な効果がある。As is apparent from the above description, in the speaker of the present invention, the magnetic circuit equipped with the speaker is a magnetic circuit in which the use efficiency of the single ring magnet is extremely good and the magnetic leakage is extremely small. Thus, it is possible to operate two sets of speakers in front and back of one magnetic circuit,
It is an extremely excellent speaker for HiFi playback. Also, 2
Compared with the case where a set of speakers is assembled separately, the cost of parts material and the number of steps can be reduced, and thus, there is a remarkable effect that the cost can be reduced.
【図１】本発明のスピーカの１実施例を示した断面図。FIG. 1 is a sectional view showing an embodiment of a speaker of the present invention.
【図２】図１のスピーカの磁気回路の断面図。2 is a cross-sectional view of a magnetic circuit of the speaker of FIG.
【図３】従来のスピーカの断面図。FIG. 3 is a sectional view of a conventional speaker.
１ 内部プレート ２ センターポール ２ａ 延長部 ３，３ａ 磁気空隙 ４ 外部ヨーク ５ リング状マグネット ６ トッププレート ７，１７ ボイスコイルボビン ７ａ，１７ａ ボイスコイル ８，１８ ダンパ ９，１９ 振動板 １０，２０ フレーム １１，２１ ダストキヤップ １２，２２ ガスケット １５ 磁気回路 1 Inner Plate 2 Center Pole 2a Extension 3,3a Magnetic Air Gap 4 Outer Yoke 5 Ring Magnet 6 Top Plate 7,17 Voice Coil Bobbin 7a, 17a Voice Coil 8,18 Damper 9,19 Vibration Plate 10,20 Frame 11,21 Dust cap 12,22 Gasket 15 Magnetic circuit
Claims (1)
磁気空隙３を形成した磁気回路１５において、その内部
プレート１の中心に垂直に立設されたセンターポール２
の下端を内部プレート１の後方に延長した延長端２ａを
形成するとともに、トッププレート６の外縁を外方に拡
大延長して、椀形の外部ヨーク４の外端縁に接合し、前
記外部ヨーク４の中心に設けた中心孔と前記センターポ
ール２の延長端２ａとの間に円環状磁気空隙３ａを形成
して、リング状マグネット５の表裏両面方向に円環状磁
気空隙３，３ａを形成した磁気回路１５を装着した双方
向輻射スピーカ２３。1. A center pole 2 standing upright at the center of an inner plate 1 of a magnetic circuit 15 having a ring-shaped magnet 5 and having an annular magnetic gap 3.
An extension end 2a is formed by extending the lower end of the rear end of the inner plate 1 to the rear, and the outer edge of the top plate 6 is enlarged and extended outward to be joined to the outer end edge of the bowl-shaped outer yoke 4. An annular magnetic air gap 3a is formed between a center hole provided at the center of 4 and the extension end 2a of the center pole 2, and annular magnetic air gaps 3, 3a are formed on both sides of the ring-shaped magnet 5. A bidirectional radiating speaker 23 equipped with a magnetic circuit 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35395793A JP3236921B2 (en) | 1993-12-28 | 1993-12-28 | Two-way radiation speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35395793A JP3236921B2 (en) | 1993-12-28 | 1993-12-28 | Two-way radiation speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07203589A true JPH07203589A (en) | 1995-08-04 |
| JP3236921B2 JP3236921B2 (en) | 2001-12-10 |
Family
ID=18434359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35395793A Expired - Fee Related JP3236921B2 (en) | 1993-12-28 | 1993-12-28 | Two-way radiation speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3236921B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006033694A (en) * | 2004-07-21 | 2006-02-02 | Pioneer Electronic Corp | Speaker unit, its manufacturing method, and speaker system |
| KR100672366B1 (en) * | 2005-03-22 | 2007-01-24 | 엘지전자 주식회사 | Double-base speaker |
| WO2010106686A1 (en) | 2009-03-19 | 2010-09-23 | パイオニア株式会社 | Speaker device |
| CN106792394A (en) * | 2017-01-24 | 2017-05-31 | 范邱燕 | A kind of two-way loudspeaker and stereo set |
-
1993
- 1993-12-28 JP JP35395793A patent/JP3236921B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006033694A (en) * | 2004-07-21 | 2006-02-02 | Pioneer Electronic Corp | Speaker unit, its manufacturing method, and speaker system |
| JP4573591B2 (en) * | 2004-07-21 | 2010-11-04 | パイオニア株式会社 | Speaker unit, manufacturing method thereof, and speaker device |
| KR100672366B1 (en) * | 2005-03-22 | 2007-01-24 | 엘지전자 주식회사 | Double-base speaker |
| WO2010106686A1 (en) | 2009-03-19 | 2010-09-23 | パイオニア株式会社 | Speaker device |
| US8290198B2 (en) | 2009-03-19 | 2012-10-16 | Pioneer Corporation | Speaker device |
| CN106792394A (en) * | 2017-01-24 | 2017-05-31 | 范邱燕 | A kind of two-way loudspeaker and stereo set |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3236921B2 (en) | 2001-12-10 |
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