JPH11187484A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
JPH11187484A
JPH11187484A JP35046297A JP35046297A JPH11187484A JP H11187484 A JPH11187484 A JP H11187484A JP 35046297 A JP35046297 A JP 35046297A JP 35046297 A JP35046297 A JP 35046297A JP H11187484 A JPH11187484 A JP H11187484A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic circuit
coupled
coil
voice coil
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
Application number
JP35046297A
Other languages
Japanese (ja)
Other versions
JP3820717B2 (en
Inventor
Yukio Okamoto
雪生 岡本
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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 Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP35046297A priority Critical patent/JP3820717B2/en
Publication of JPH11187484A publication Critical patent/JPH11187484A/en
Application granted granted Critical
Publication of JP3820717B2 publication Critical patent/JP3820717B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a slender loudspeaker for use in various video devices which has improved characteristics in low frequency reproduction and in transient behavior as well as high input withstanding performance. SOLUTION: This loudspeaker is provided with a diaphragm 10 and a damper 12, that are coupled respectively with an upper coil 8a and a lower coil 8 nearly in the middle inserted to a magnetic circuit 5, having an upper magnetic gap 4a and a lower magnetic gap 4b the magnetic flux directions of which are opposite to each other to enhance low sound frequency reproduction and input withstanding performance, and then split resonance hardly takes place.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は各種映像・音響機器
に使用される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 used for various video and audio equipment.
【0002】[0002]
【従来の技術】従来のスピーカを図7の断面図により説
明する。同図において、円盤状に形成されたプレート1
3はヨーク14の内周との間に一定距離の隙間が円状に
連なる磁気ギャップ15を設け、この磁気ギャップ15
に磁束16が放射状に貫く磁気回路17を磁石18と共
に構成している。
2. Description of the Related Art A conventional speaker will be described with reference to a sectional view of FIG. In the figure, a plate 1 formed in a disk shape
3 is provided with a magnetic gap 15 in which a gap of a certain distance is continuous with the inner periphery of the yoke 14 in a circular shape.
A magnetic circuit 17 through which a magnetic flux 16 radially penetrates is formed together with a magnet 18.
【0003】19はボイスコイルで少なくとも筒状に形
成されたボビン部20とこのボビン部20の外周に沿っ
て巻回され上記磁気ギャップ15に挿入されるコイル部
21とで構成され、外周部をエッジ22を介してフレー
ム23に結合された振動板24の内周に結合されると共
に外周がフレーム23に結合されたダンパー25の内周
に結合され、コイル部21が磁気ギャップ15の適正な
位置に挿入されるように支持されている。
[0003] Reference numeral 19 denotes a bobbin portion 20 formed of at least a cylindrical shape with a voice coil, and a coil portion 21 wound along the outer periphery of the bobbin portion 20 and inserted into the magnetic gap 15. The outer peripheral portion is coupled to the inner periphery of a damper 25 coupled to the frame 23 while the outer periphery is coupled to the inner periphery of a diaphragm 24 coupled to the frame 23 via the edge 22, and the coil portion 21 is positioned at an appropriate position of the magnetic gap 15. It is supported to be inserted into.
【0004】以上のように構成されたスピーカは、ボイ
スコイル19のコイル部21に音声電流が流れるとボイ
スコイル19は音声電流の向きに応じて上下に振動し、
このボイスコイル19に結合されている振動板24も同
じように振動し音波として外部に放射されるものであ
る。なお、26は防塵キャップである。
In the loudspeaker configured as described above, when a voice current flows through the coil portion 21 of the voice coil 19, the voice coil 19 vibrates up and down according to the direction of the voice current.
The diaphragm 24 connected to the voice coil 19 also vibrates in the same manner and is radiated to the outside as sound waves. 26 is a dustproof cap.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、上述の
スピーカは、 (1)外径もしくは横幅を狭くすると自ずと磁気回路1
7も小さくなり音声再生の能率の低下を招く。 (2)外径もしくは横幅を狭くするとダンパー25及び
エッジ部22の幅も小さくなるため振動系スティフネス
が大きくなり、最低共振周波数f0が上昇し低音域再生
が困難になると共に大入力時の振幅に追従できない。 (3)横幅を狭くし同様に振動板24の形状も細長にす
ると、振動板24の中央部のみに駆動力が伝わるため長
軸方向の分割共振が発生し、再生音圧の周波数特性上ピ
ーク・ディップが生じ音質劣化を招く。 (4)ボイスコイル19のコイル部21に発生する駆動
力が一旦ボビン部20に伝わった後振動板24に伝搬さ
れるためボビン部20で伝達ロスが生じ過度特性が良く
ない。 という課題を有するものであった。
However, the above-mentioned loudspeaker has the following disadvantages. (1) When the outer diameter or the width is reduced, the magnetic circuit 1
7 is also reduced, which causes a reduction in the efficiency of voice reproduction. (2) When the outer diameter or the width is reduced, the width of the damper 25 and the edge portion 22 is also reduced, so that the stiffness of the vibration system is increased, the minimum resonance frequency f0 is increased, and it becomes difficult to reproduce the low frequency range, and the amplitude at the time of large input is reduced. I can't follow. (3) If the width is narrowed and the shape of the diaphragm 24 is also elongated, the driving force is transmitted only to the central portion of the diaphragm 24, so that a split resonance in the long axis direction occurs, and a peak occurs in the frequency characteristic of the reproduced sound pressure.・ Dip occurs and sound quality deteriorates. (4) Since the driving force generated in the coil portion 21 of the voice coil 19 is once transmitted to the bobbin portion 20 and then propagated to the diaphragm 24, a transmission loss occurs in the bobbin portion 20, resulting in poor transient characteristics. There was a problem that.
【0006】本発明は上記課題を解決するもので、小口
径及び幅が狭い細長形状にしても能率、耐入力の向上を
図ることができ、再生音圧周波数特性と過度特性の優れ
たスピーカを提供するものである。
The present invention has been made to solve the above-mentioned problems, and a speaker having excellent reproduction sound pressure frequency characteristics and transient characteristics which can improve efficiency and input resistance even in an elongated shape having a small diameter and a narrow width. To provide.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明のスピーカは、磁束方向の異なる上下二つの平
行した磁気ギャップにコイルが挿入されたボイスコイル
と、略中央が上記ボイスコイルの上部に結合され外周が
上記フレームもしくは磁気回路に結合した振動板と、略
中央が上記ボイスコイルの下部と結合し外周が上記フレ
ームもしくは磁気回路に結合したダンパーとで構成した
ことにより、小口径及び横幅が狭い細長構造であっても
再生音圧の能率や耐入力の向上が図れ、しかも最低共振
周波数f0を低く設定した再生音圧周波数の優れたスピ
ーカを提供できるものである。
In order to solve the above-mentioned problems, a speaker according to the present invention comprises a voice coil in which coils are inserted in two upper and lower parallel magnetic gaps having different magnetic flux directions, and a substantially center of the voice coil. The diaphragm is connected to the upper portion and the outer periphery is connected to the frame or the magnetic circuit, and the substantially center is formed by the damper connected to the lower portion of the voice coil and the outer periphery is connected to the frame or the magnetic circuit. It is possible to provide a speaker having an improved reproduction sound pressure frequency and an improved reproduction sound pressure frequency with a low minimum resonance frequency f0 set even if the structure has a narrow width and a narrow structure.
【0008】[0008]
【発明の実施の形態】本発明の請求項1に記載の発明
は、一組の磁石と結合したヨークを二つ互いに向き合わ
せ互いのヨークと磁石との間にそれぞれの磁束方向が逆
となる上下二つの平行した磁気ギャップを設けた磁気回
路と、この磁気回路に結合したフレームと、上記磁気回
路の磁気ギャップにコイルが挿入されたボイスコイル
と、略中央が上記ボイスコイルの上部に結合され外周が
上記フレームもしくは上記磁気回路に結合した振動板
と、略中央が上記ボイスコイルの下部に結合され外周が
上記フレームもしくは上記磁気回路に結合したダンパー
とで構成して、小口径及び横幅の狭い細長構造であって
も支持系の振幅が大入力に追従でき、しかも最低共振周
波数f0を低く設定し再生音圧周波数での平坦化を図る
ものである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, two yokes connected to a set of magnets are opposed to each other, and the directions of magnetic fluxes between the respective yokes and the magnets are opposite to each other. A magnetic circuit having two upper and lower parallel magnetic gaps, a frame coupled to the magnetic circuit, a voice coil having a coil inserted in the magnetic gap of the magnetic circuit, and a substantially center coupled to an upper portion of the voice coil. A diaphragm whose outer periphery is connected to the frame or the magnetic circuit and a damper whose center is connected to a lower portion of the voice coil and whose outer periphery is connected to the frame or the magnetic circuit have a small diameter and a small width. Even in the case of a slender structure, the amplitude of the support system can follow a large input, and the lowest resonance frequency f0 is set low to achieve flatness at the reproduced sound pressure frequency.
【0009】本発明の請求項2に記載の発明は、請求項
1に記載の磁気回路の構成を磁石と結合したヨークを二
つ互いに向き合わせ互いのヨークとヨーク、磁石と磁石
の間に磁束方向の逆となる上下二つの平行した磁気ギャ
ップを設ける磁気回路として構成としたもので、請求項
1記載のスピーカと同様の機能を果たすものである。
According to a second aspect of the present invention, there is provided a magnetic circuit according to the first aspect, wherein two yokes which are connected to a magnet face each other, and a magnetic flux is applied between the yokes and the magnets. It is configured as a magnetic circuit having two upper and lower parallel magnetic gaps in opposite directions, and performs the same function as the speaker according to the first aspect.
【0010】本発明の請求項3に記載の発明は、請求項
1に記載の磁気回路の構成を磁石と結合したヨークとも
う一つのヨークを互いに向き合わせ互いのヨークとヨー
ク、磁石とヨークの間に磁束方向の逆となる上下二つの
平行した磁気ギャップを設ける磁気回路として構成した
もので、請求項1記載のスピーカよりも部品点数を少な
くでき、より安価に請求項1と同様の機能を果たすもの
である。
According to a third aspect of the present invention, there is provided a magnetic circuit according to the first aspect, wherein a yoke coupled to a magnet and another yoke are opposed to each other, and the yokes and the yokes are mutually connected. It is configured as a magnetic circuit having two upper and lower parallel magnetic gaps opposite to each other in the direction of the magnetic flux, so that the number of parts can be reduced as compared with the speaker according to claim 1 and the same function as in claim 1 is provided at a lower cost. To fulfill.
【0011】本発明の請求項4に記載の発明は、ボイス
コイルの上部コイル外周にフレームもしくは磁気回路に
外周を結合するエッジのみを設け請求項1または2また
は3記載の振動板を用いず直接ボイスコイルから音波を
外部に放射するよう構成して伝達ロスの軽減を図るもの
である。
According to a fourth aspect of the present invention, only an edge for connecting the outer periphery to a frame or a magnetic circuit is provided on the outer periphery of the upper coil of the voice coil directly without using the diaphragm according to the first, second or third aspect. The configuration is such that sound waves are radiated from the voice coil to the outside to reduce transmission loss.
【0012】以下、本発明のスピーカの一実施の形態に
ついて図1から図3により説明する。
An embodiment of the speaker according to the present invention will be described below with reference to FIGS.
【0013】(実施の形態1)図1は、本発明の一実施
の形態のスピーカの断面図であり、図2は同要部である
磁気回路の斜視図であり、図3は同要部であるボイスコ
イルの斜視図である。
(Embodiment 1) FIG. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention, FIG. 2 is a perspective view of a magnetic circuit which is the main part, and FIG. FIG. 2 is a perspective view of a voice coil.
【0014】同図によると、1aは磁石でありヨーク2
aに結合されている。また磁石1bとヨーク2bも同じ
ように結合され、これら互いのヨークと磁石との間に磁
束3がそれぞれ逆方向に貫くように上部磁気ギャップ4
aと下部磁気ギャップ4bを設け全体として2組のヨー
クと磁石からなる磁気回路5を構成してフレーム6に結
合している。また、ボイスコイル7は上部磁気ギャップ
4aと下部磁気ギャップ4bに上部コイル8aと下部コ
イル8bがそれぞれ挿入できるように中心9の周辺に巻
回されている。10は略中央で上部コイル8aに結合し
外周でエッジ部11を介して上記フレーム6に結合する
振動板であり、12は略中央で下部コイル8bに結合し
外周で上記磁気回路5に結合するダンパーである。
According to FIG. 1, reference numeral 1a denotes a magnet and a yoke 2
a. Also, the magnet 1b and the yoke 2b are connected in the same manner, and the upper magnetic gap 4 is provided between the respective yokes and the magnet so that the magnetic flux 3 penetrates in opposite directions.
a and a lower magnetic gap 4b are provided to form a magnetic circuit 5 composed of two sets of yokes and magnets as a whole and connected to a frame 6. The voice coil 7 is wound around the center 9 so that the upper coil 8a and the lower coil 8b can be inserted into the upper magnetic gap 4a and the lower magnetic gap 4b, respectively. Reference numeral 10 denotes a diaphragm which is coupled to the upper coil 8a at substantially the center and is coupled to the frame 6 at the outer periphery via the edge portion 11, and 12 is coupled to the lower coil 8b at substantially the center and coupled to the magnetic circuit 5 at the outer periphery. It is a damper.
【0015】以上のように構成されたスピーカについて
図1を用いてその動作を説明する。まず上部磁気ギャッ
プ4aと下部磁気ギャップ4bにそれぞれ配置された上
部コイル部8a、下部コイル部8bに音声電流が流れる
とボイスコイル7は音声電流の向きに応じて振動するた
め、このボイスコイル7に結合している振動板10を通
して外部に音波を放射させる。
The operation of the loudspeaker configured as described above will be described with reference to FIG. First, when a voice current flows through the upper coil portion 8a and the lower coil portion 8b disposed in the upper magnetic gap 4a and the lower magnetic gap 4b, respectively, the voice coil 7 vibrates according to the direction of the voice current. Sound waves are radiated to the outside through the connected diaphragm 10.
【0016】以上の構成としたことにより、スピーカを
小口径もしくは横幅の狭い細長構造としても従来技術に
比べダンパー12と振動板10の外周のエッジ部11の
幅を大きくできるため支持系全体のスティフネスを小さ
く、大入力振幅にも耐えうることができると共に、振動
板10の長軸方向に均一に、かつ直接振動板10に上部
コイル8aの振動エネルギーが伝わるようにできるもの
である。
With the above configuration, the width of the damper 12 and the outer edge portion 11 of the diaphragm 10 can be made larger than in the prior art even if the speaker has a small diameter or an elongated structure with a narrow width. Is small and can withstand a large input amplitude, and the vibration energy of the upper coil 8a can be transmitted to the vibration plate 10 uniformly and directly to the vibration plate 10.
【0017】以上のように本実施の形態によれば振動板
10のエッジ部11とダンパー12の面積を最大限に大
きくできると共に、ボイスコイル7の振動エネルギーを
より均一にして直接振動板10に伝達するため、耐入力
及び低音再生と音圧周波数特性の平坦性に優れたスピー
カの供給を実現できるものである。
As described above, according to the present embodiment, the area of the edge 11 and the damper 12 of the diaphragm 10 can be maximized, and the vibration energy of the voice coil 7 can be made more uniform so that the vibration Since the power is transmitted, it is possible to realize the supply of a speaker having a high input resistance, low sound reproduction, and excellent flatness of sound pressure frequency characteristics.
【0018】なお、上記実施の形態では、振動板10は
フレーム6に結合したものとして説明したが磁気回路5
に結合しても良く、ダンパー12はフレーム6に結合し
ても良いものである。
In the above embodiment, the description has been made assuming that the diaphragm 10 is coupled to the frame 6.
The damper 12 may be connected to the frame 6.
【0019】(実施の形態2)本発明の他の実施の形態
を図4より説明する。なお、実施の形態1と同一箇所は
同一番号を付し、説明を省略して説明する。
(Embodiment 2) Another embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0020】図4は本発明の他の実施の形態の断面図で
ある。同図によると、実施の形態1との相違点は磁石1
bの位置であり、磁石1aと磁石1bとの間に上部磁気
ギャップ4aを設けている点であり、動作は実施の形態
1と同様の動作をするものである。
FIG. 4 is a sectional view of another embodiment of the present invention. According to the figure, the difference from the first embodiment is that the magnet 1
The position b is that an upper magnetic gap 4a is provided between the magnet 1a and the magnet 1b, and the operation is the same as that of the first embodiment.
【0021】(実施の形態3)本発明の他の実施の形態
を図5より説明する。なお、実施の形態1と同一箇所は
同一番号を付し、説明を省略して説明する。
(Embodiment 3) Another embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0022】図5は本発明の他の実施の形態の断面図で
ある。同図によると、実施の形態1との相違点は磁石1
bを設けないで上部磁気ギャップ4a及び下部磁気ギャ
ップ4bを構成している点であり、動作は実施の形態1
と同様の動作をするものである。
FIG. 5 is a sectional view of another embodiment of the present invention. According to the figure, the difference from the first embodiment is that the magnet 1
b, the upper magnetic gap 4a and the lower magnetic gap 4b are formed without the provision of the first embodiment.
It performs the same operation as.
【0023】(実施の形態4)本発明の他の実施の形態
を図6より説明する。なお、実施の形態1と同一箇所は
同一番号を付し、説明を省略して説明する。
(Embodiment 4) Another embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【0024】図6は本発明の他の実施の形態の断面図で
ある。同図によると、実施の形態1との相違点は振動板
10を設けないでボイスコイル7の上部コイル8aの外
周にフレーム6もしくは磁気回路5に外周を結合するエ
ッジ部11を設け上部コイル8aから直接外部に音波を
放射するように構成している点であり、振動板10での
伝達ロスをなくし過度特性の向上を図ったものである。
FIG. 6 is a sectional view of another embodiment of the present invention. According to the figure, the difference from the first embodiment is that an edge portion 11 for connecting the outer periphery to the frame 6 or the magnetic circuit 5 is provided on the outer periphery of the upper coil 8a of the voice coil 7 without providing the diaphragm 10, and the upper coil 8a is provided. The structure is such that sound waves are radiated directly from the outside to the outside, and the transmission loss in the diaphragm 10 is eliminated to improve the transient characteristics.
【0025】[0025]
【発明の効果】以上のように本発明のスピーカは、上下
二つの平行した且つ磁束方向が逆となる磁気ギャップを
設けた磁気回路と、この磁気回路に結合したフレーム
と、略中央がボイスコイルの上部に結合され外周がフレ
ームもしくは磁気回路に結合した振動板と、略中央がボ
イスコイルの下部に結合し外周がフレームもしくは磁気
回路に結合したダンパーとで構成したことにより、小口
径及び横幅を狭くした細長構造をとっても振動板周辺の
エッジとダンパーの面積を最大限に広くし振動系全体の
スティフネスを下げて最低共振周波数f0を低くすると
共に大入力時の振幅にも追従でき、しかもボイスコイル
の振動エネルギーをより均一により直接振動板に伝達す
るため、耐入力及び低音再生と音圧周波数特性の向上が
図れるものである。
As described above, the loudspeaker according to the present invention comprises a magnetic circuit having two upper and lower parallel magnetic gaps having opposite magnetic flux directions, a frame connected to the magnetic circuit, and a voice coil substantially at the center. The diaphragm is connected to the upper part and the outer periphery is connected to the frame or magnetic circuit, and the center is connected to the lower part of the voice coil and the outer periphery is connected to the frame or the magnetic circuit. Even with a narrow slender structure, the edge around the diaphragm and the area of the damper are maximized, the stiffness of the entire vibration system is reduced, the lowest resonance frequency f0 is lowered, and the amplitude at the time of large input can be followed. Since the vibration energy is more uniformly transmitted directly to the diaphragm, it is possible to improve the input resistance, the low-frequency sound reproduction, and the sound pressure frequency characteristic.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の一実施の形態のスピーカの断面図FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention.
【図2】同要部である磁気回路の斜視図FIG. 2 is a perspective view of a magnetic circuit which is a main part of the same.
【図3】同要部であるボイスコイルの斜視図FIG. 3 is a perspective view of a voice coil which is a main part of the same.
【図4】同他の実施の形態のスピーカの断面図FIG. 4 is a cross-sectional view of a speaker according to another embodiment.
【図5】同他の実施の形態のスピーカの断面図FIG. 5 is a sectional view of a speaker according to another embodiment.
【図6】同他の実施の形態のスピーカの断面図FIG. 6 is a cross-sectional view of a speaker according to another embodiment.
【図7】従来のスピーカの断面図FIG. 7 is a sectional view of a conventional speaker.
【符号の説明】[Explanation of symbols]
1a,1b 磁石 2a,2b ヨーク 3 磁束 4a 上部磁気ギャップ 4b 下部磁気ギャップ 5 磁気回路 6 フレーム 7 ボイスコイル 8a 上部コイル 8b 下部コイル 9 中心 10 振動板 11 エッジ部 12 ダンパー 1a, 1b magnet 2a, 2b yoke 3 magnetic flux 4a upper magnetic gap 4b lower magnetic gap 5 magnetic circuit 6 frame 7 voice coil 8a upper coil 8b lower coil 9 center 10 diaphragm 11 edge 12 damper

Claims (4)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 少なくとも一組の磁石と結合したヨーク
    を二つ互いに向き合わせ互いのヨークと磁石との間にそ
    れぞれの磁束方向が逆となる上下二つの平行した磁気ギ
    ャップを設けた磁気回路と、この磁気回路に結合したフ
    レームと、上記磁気回路の磁気ギャップにコイルが挿入
    されたボイスコイルと、略中央が上記ボイスコイルの上
    部に結合され外周が上記フレームもしくは上記磁気回路
    に結合した振動板と、略中央が上記ボイスコイルの下部
    に結合し外周が上記フレームもしくは上記磁気回路に結
    合したダンパーとで構成したスピーカ。
    1. A magnetic circuit comprising two yokes coupled to at least one set of magnets facing each other, and two upper and lower parallel magnetic gaps having opposite magnetic flux directions between the respective yokes and the magnets. A frame coupled to the magnetic circuit, a voice coil having a coil inserted into a magnetic gap of the magnetic circuit, and a diaphragm having a substantially center coupled to an upper portion of the voice coil and an outer periphery coupled to the frame or the magnetic circuit. And a damper having a substantially center coupled to a lower portion of the voice coil and an outer periphery coupled to the frame or the magnetic circuit.
  2. 【請求項2】 磁石と結合したヨークを二つ互いに向き
    合わせ互いのヨークとヨーク、磁石と磁石の間に磁束方
    向の逆となる上下二つの平行した磁気ギャップを設ける
    磁気回路から構成される請求項1に記載のスピーカ。
    2. A magnetic circuit comprising two yokes coupled to a magnet, facing each other, a yoke and a yoke of each other, and a magnetic circuit for providing two upper and lower parallel magnetic gaps between the magnets and having opposite magnetic flux directions. Item 7. The speaker according to Item 1.
  3. 【請求項3】 磁石と結合したヨークともう一つのヨー
    クを互いに向き合わせ互いのヨークとヨーク、磁石とヨ
    ークの間に磁束方向の逆となる上下二つの平行した磁気
    ギャップを設ける磁気回路を構成した請求項1に記載の
    スピーカ。
    3. A magnetic circuit in which a yoke coupled to a magnet and another yoke are opposed to each other, and two upper and lower parallel magnetic gaps whose magnetic flux directions are opposite to each other are formed between the yoke and the yoke. The speaker according to claim 1, wherein
  4. 【請求項4】 ボイスコイルの上部コイル外周にフレー
    ムもしくは磁気回路に外周を結合するエッジを設け振動
    板を用いず直接ボイスコイルから音波を外部に放射する
    よう構成された請求項1に記載のスピーカ。
    4. The loudspeaker according to claim 1, wherein an edge for connecting the outer circumference to a frame or a magnetic circuit is provided on the outer circumference of the upper coil of the voice coil so that sound waves are radiated directly from the voice coil to the outside without using a diaphragm. .
JP35046297A 1997-12-19 1997-12-19 Speaker Expired - Fee Related JP3820717B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35046297A JP3820717B2 (en) 1997-12-19 1997-12-19 Speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35046297A JP3820717B2 (en) 1997-12-19 1997-12-19 Speaker

Publications (2)

Publication Number Publication Date
JPH11187484A true JPH11187484A (en) 1999-07-09
JP3820717B2 JP3820717B2 (en) 2006-09-13

Family

ID=18410663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35046297A Expired - Fee Related JP3820717B2 (en) 1997-12-19 1997-12-19 Speaker

Country Status (1)

Country Link
JP (1) JP3820717B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129665A (en) * 2005-11-07 2007-05-24 Sony Corp Speaker apparatus
WO2010058556A1 (en) * 2008-11-19 2010-05-27 パナソニック株式会社 Speaker and electronic device including speaker
US8027502B2 (en) 2005-12-21 2011-09-27 Pioneer Corporation Speaker device and mobile phone
US8027503B2 (en) 2005-12-21 2011-09-27 Pioneer Corporation Diaphragm for speaker device, speaker device and mobile phone
US8041071B2 (en) 2006-12-27 2011-10-18 Pioneer Corporation Diaphragm and speaker device
CN102256195A (en) * 2010-09-01 2011-11-23 歌尔声学股份有限公司 Moving-coil type electro-acoustic transducer
US8135160B2 (en) 2005-12-21 2012-03-13 Pioneer Corporation Speaker device and mobile phone

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129665A (en) * 2005-11-07 2007-05-24 Sony Corp Speaker apparatus
US8027502B2 (en) 2005-12-21 2011-09-27 Pioneer Corporation Speaker device and mobile phone
US8027503B2 (en) 2005-12-21 2011-09-27 Pioneer Corporation Diaphragm for speaker device, speaker device and mobile phone
US8135160B2 (en) 2005-12-21 2012-03-13 Pioneer Corporation Speaker device and mobile phone
US8041071B2 (en) 2006-12-27 2011-10-18 Pioneer Corporation Diaphragm and speaker device
WO2010058556A1 (en) * 2008-11-19 2010-05-27 パナソニック株式会社 Speaker and electronic device including speaker
US8422723B2 (en) 2008-11-19 2013-04-16 Panasonic Corporation Loudspeaker and electronic device including loudspeaker
JP5372012B2 (en) * 2008-11-19 2013-12-18 パナソニック株式会社 Speaker and electronic device equipped with speaker
CN102256195A (en) * 2010-09-01 2011-11-23 歌尔声学股份有限公司 Moving-coil type electro-acoustic transducer

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