JPS603276B2 - speaker - Google Patents
speakerInfo
- Publication number
- JPS603276B2 JPS603276B2 JP11041578A JP11041578A JPS603276B2 JP S603276 B2 JPS603276 B2 JP S603276B2 JP 11041578 A JP11041578 A JP 11041578A JP 11041578 A JP11041578 A JP 11041578A JP S603276 B2 JPS603276 B2 JP S603276B2
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- layer
- winding
- voice
- coils
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
【発明の詳細な説明】
本発明は同一のボイスコイルボビンに２個のボイスコイ
ルを互の磁束が打消し合うように巻きつけ、これによっ
て放射音圧の歪を低減するようにしたスピーカに関し、
特に２個のボイスコイルを漏れ磁束による影響を受ける
ことなく効率良く巻きつけるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker in which two voice coils are wound around the same voice coil bobbin so that their magnetic fluxes cancel each other out, thereby reducing distortion of radiated sound pressure.
In particular, two voice coils can be wound efficiently without being affected by leakage magnetic flux.
発明者らは、先に特巌昭５３一９１９２２号において、
同一のボイスコイルボビンに互の磁束が打消し合うよう
に２つのボイスコイルを巻きつけ、これによって放射音
圧の歪を低減するようにしたスピーカを提示した。The inventors previously disclosed in Tokugan Sho No. 53-91922,
We have proposed a speaker in which two voice coils are wound around the same voice coil bobbin so that their magnetic fluxes cancel each other out, thereby reducing distortion of radiated sound pressure.
すなわち、一般のスピーカのようにボイスコイルを１個
のみ設けた場合には、直流磁束をＢｏ，ボイスコイルに
よって発生する交流磁束の大きさを△Ｂ，角周波数をの
，駆動電流の大きさをｉｏ，ボイスコイルの長さを△，
駆動力をＦ，時刻をのとすると、Ｆ＝（Ｂ。In other words, when only one voice coil is provided as in a general speaker, Bo is the DC magnetic flux, ΔB is the magnitude of the AC magnetic flux generated by the voice coil, is the angular frequency, and is the magnitude of the drive current. io, voice coil length △,
If the driving force is F and the time is F, then F=(B.
十△ＢＳｉｎ■ｔ）そｉＯＳｉｎのｔ＝舷〆ｉｏｓｉｎ
のｔ＋△Ｂそｉｏ／２（１一沙ｏｓ２のｔ）＝△Ｂ〆ｉ
ｏ／２十Ｂ〆ｉｏｓｉｎ■ｔ−△Ｂ〆ｉＭＯＳ２のｔ
……【１）となる。【１’式において第１
項△Ｂクｊｏノ２は直流駆動力、第２項Ｂのｏｓｉｎの
ｔは基本波、第３項△ＢのＭｏｓ２のｔは第２高周波を
表わし、駆動電流ｉｏが窓歪であっても駆動力Ｆには第
２高周波による歪を生ずることがわかる。そこで、第１
図に示すようにセンターポール１のまわりにマグネット
２と第１，第２のプレート３，４を配置し、ボイスコイ
ルボビン５に第１，第２のボイスコイル６，７を巻きつ
け、しかもこれらのボイスコイル６，７による磁束■，
，■２が互に打ち消しあうようにこれらのコイル６，７
を接続するようにしたものである。10△BSin■t) soiOSin's t = port 〆iosin
t + △B soio/2 (t of 1 isos2) = △B〆i
o/20B〆iosin■t-△B〆iMOS2t
...[1] becomes. [The first in formula 1'
The term △B Kujono2 represents the DC driving force, the t of osin in the second term B represents the fundamental wave, and the t of Mos2 in the third term △B represents the second high frequency. Even if the drive current io is window distortion, It can be seen that distortion occurs in the driving force F due to the second high frequency. Therefore, the first
As shown in the figure, the magnet 2 and the first and second plates 3 and 4 are arranged around the center pole 1, and the first and second voice coils 6 and 7 are wound around the voice coil bobbin 5. Magnetic flux due to voice coils 6 and 7 ■,
,■2 these coils 6 and 7 cancel each other out.
It is designed to connect.
このようにすれば、第１，第２のボイスコイル６，７を
横切るマグネット２による直流磁束は互に逆向きであっ
て、上記第１，第２のボイスコイル６，７に流れる駆動
電流は互に逆向きであるため、上記第１，第２のボイス
コイル６，７には同方向の駆動力を得ることができ、し
かも、第１，第２のボイスコイル６，７に流れる駆動電
流によってボイスコイル６，７自体の図りに発生する磁
束に影響してセンターポールー、マグネット２、プレー
ト３，４を通る第１，第２の磁束流■，．■２ は互に
逆向きに発生して打消されるため、【１｝式において△
Ｂｓｉｎのｔの成分が原理的に発生せず、第２高調波に
よる歪も発生しない。ところがこのようなスピーカにお
いて、第１，第２のボイスコイル６，７を巻く際には、
各コイル６，７の巻終り端をボイスコイルボビン５の上
方へ引きの‘まし、綿糸線により端子板へ接続するのが
一般的であるが、このようにすると特に下方のボイスコ
イル７からの引出線が長くなり、漏れ磁束をひろい易く
なるという問題がある。In this way, the direct current magnetic fluxes caused by the magnet 2 that cross the first and second voice coils 6 and 7 are in opposite directions, and the drive current flowing through the first and second voice coils 6 and 7 is Since the directions are opposite to each other, the first and second voice coils 6 and 7 can receive driving forces in the same direction, and furthermore, the driving current flowing through the first and second voice coils 6 and 7 This influences the magnetic flux generated in the voice coils 6, 7 themselves, and causes the first and second magnetic flux flows to flow through the center pole, the magnet 2, and the plates 3, 4. ■2 occur in opposite directions and cancel each other out, so in formula [1}, △
In principle, the t component of Bsin does not occur, and distortion due to the second harmonic does not occur. However, in such a speaker, when winding the first and second voice coils 6 and 7,
It is common practice to pull the winding end of each coil 6, 7 above the voice coil bobbin 5 and connect it to the terminal board with a cotton thread wire. There is a problem in that the wire becomes longer and leakage magnetic flux becomes easier to collect.
本発明はこのような問題を解決するスピーカを提供する
ものである。The present invention provides a speaker that solves these problems.
以下本発明の一実施例について第２図とともに説明する
。An embodiment of the present invention will be described below with reference to FIG.
第２図において、５はボイスコイルボビン、６，７は１
本の導線で巻かれた第１，第２のボイスコイルである。
各ボイスコイル６，７はそれぞれ２層に巻かれており、
図中斜線を付した部分６ａ，７ａが一層目、その上の部
分６ｂ，７ｂは二層目を示している。この巻き方を説明
すると、まずボイスコイルボビン５の上方から見たとき
、巻始め端Ａから第１のボイスコイル６の一層目を右回
りに巻き、その巻終り端Ｂをボビン５に沿わせて鞠方向
に延長し、さらに第２のボイスコイル７の一層目７ａを
逆に左回り‘こ巻く。In Figure 2, 5 is the voice coil bobbin, 6 and 7 are 1
The first and second voice coils are wound with solid conductive wire.
Each voice coil 6, 7 is wound in two layers,
The hatched portions 6a and 7a in the figure represent the first layer, and the portions 6b and 7b above them represent the second layer. To explain this winding method, first, when viewed from above the voice coil bobbin 5, the first layer of the first voice coil 6 is wound clockwise from the winding start end A, and the winding end B is aligned with the bobbin 5. Extend it in the direction of the ball, and then reversely wind the first layer 7a of the second voice coil 7 in a counterclockwise direction.
続いて、その上に同じく左回りに第２のボイスコイル７
の二層目７ａを巻き、その巻終り端Ｃを上記第１のボイ
スコイル６の一層目の巻終り端Ｂに沿わせてボビン５の
軸万向に引きのばし、さらに第１のボイスコイル６の一
層目６ａの上にそれと同じ右回りに二層目６ｂを巻く。
そしてこの二眉目６ｂの巻終り端Ｄを巻始め端Ａに沿わ
せてボビン５の上方へ引きのぱす。このようにして第１
，第２のボイスコイル６，７が１本の導線で構成され、
しかもその巻き方向から、第１，第２のボイスコイル６
，７の駆動力が同一方向に生じる。そして、このように
すれば、２つのコイル６，７の巻き始め端Ａと巻終り端
Ｄが一箇所からひきだされ、しかも２つのコイル６，７
を接続する部分Ｂ，Ｃも最短距離で済むから、導線によ
り構成されるループを最小限にすることができ、その結
果洩れ磁束による影響を著しく小さくすることができる
。Next, the second voice coil 7 is placed above it in the same counterclockwise direction.
The second layer 7a is wound, and the winding end C thereof is stretched along the winding end B of the first layer of the first voice coil 6 in all directions of the axis of the bobbin 5, and then the first voice coil 6 is wound. Wrap the second layer 6b over the first layer 6a in the same clockwise direction.
Then, the winding end D of the bibrow stitch 6b is pulled upward from the bobbin 5 along the winding start end A. In this way the first
, the second voice coils 6 and 7 are composed of one conductor,
Moreover, from the winding direction, the first and second voice coils 6
, 7 are generated in the same direction. By doing this, the winding start end A and winding end D of the two coils 6, 7 can be pulled out from one place, and the two coils 6, 7 can be pulled out from one place.
Since the connecting portions B and C also require the shortest distance, the loop formed by the conducting wire can be minimized, and as a result, the influence of leakage magnetic flux can be significantly reduced.
また、１本の導線で２つのコイル６，７を巻くことがで
きるから、巻き付け作業も簡略化できる。以上のように
、本発明によれば同一のボイスコイルボビンに巻く２つ
のボイスコイルを最４・限のループで巻くことができる
から、漏れ磁束による影響を４・さくすることができ、
それだけ音圧歪の低減を図ることができる。Further, since the two coils 6 and 7 can be wound with one conductor, the winding work can be simplified. As described above, according to the present invention, since two voice coils can be wound around the same voice coil bobbin with a maximum of 4 loops, the influence of leakage magnetic flux can be reduced by 4.
Sound pressure distortion can be reduced accordingly.
第１図は本発明を適用するスピーカの菱部を示す断面図
、第２図は本発明の一実施例の要部を示す斜視図である
。
１…センターポール、２…マグネット、３，４…プレー
ト、５…ボイスコイルボビン、６…第１のボイスコイル
、６ａ…一層目、６ｂ…二眉目、７・・・第２のボイス
コイル、７ａ・・・一層目、７ｂ・・・二属目。
第１図
第２図FIG. 1 is a sectional view showing a lozenge part of a speaker to which the present invention is applied, and FIG. 2 is a perspective view showing a main part of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Center pole, 2... Magnet, 3, 4... Plate, 5... Voice coil bobbin, 6... First voice coil, 6a... First layer, 6b... Second eyebrow, 7... Second voice coil, 7a. ...1st layer, 7b...2nd genus. Figure 1 Figure 2
Claims (1)
第１，第２のボイスコイルを巻回し、これら第１，第２
のボイスコイルの磁束を互に打消すようにして音圧歪を
低減するようにしたスピーカにおいて、１本の導線の巻
始め端から上記第１のボイスコイルの一層目を巻回し、
その巻終り端を上記ボイスコイルボビンに沿って軸方向
に引き出し、さらにその先端で上記第２のボイスコイル
の一層目および２層目を上記第１のボイスコイルの一層
目とは逆方向に巻回し、該二層目の巻終り端を上記第１
のボイスコイルの一層目の巻終り端に沿わせて上記ボイ
スコイルボビンの軸方向に引き出し、その先端で上記第
１のボイスコイルの一層目の上にこれと同一方向に二層
目を巻回し、その巻終り端を上記導線の巻始め端ととも
に上記ボイスコイルコイルの軸方向に引き出すようにし
たことを特徴とするスピーカ。1 Wind the first and second voice coils each consisting of two layers on the same voice coil bobbin, and
In a speaker configured to reduce sound pressure distortion by mutually canceling the magnetic fluxes of the voice coils, the first layer of the first voice coil is wound from the winding start end of one conductive wire,
The end of the winding is pulled out in the axial direction along the voice coil bobbin, and the first and second layers of the second voice coil are wound at the tip in the opposite direction to the first layer of the first voice coil. , the end of the winding of the second layer is connected to the first
The voice coil is pulled out in the axial direction of the voice coil bobbin along the winding end of the first layer of the voice coil, and a second layer is wound in the same direction on top of the first layer of the first voice coil at the tip thereof, A speaker characterized in that the end of the winding is pulled out in the axial direction of the voice coil coil together with the start end of the winding of the conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11041578A JPS603276B2 (en) | 1978-09-07 | 1978-09-07 | speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11041578A JPS603276B2 (en) | 1978-09-07 | 1978-09-07 | speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5537071A JPS5537071A (en) | 1980-03-14 |
| JPS603276B2 true JPS603276B2 (en) | 1985-01-26 |
Family
ID=14535190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11041578A Expired JPS603276B2 (en) | 1978-09-07 | 1978-09-07 | speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603276B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4584438A (en) * | 1980-07-07 | 1986-04-22 | Erl Koenig | Percussion air motor |
| JP3236469B2 (en) * | 1995-04-06 | 2001-12-10 | アルパイン株式会社 | Magnetic drive device and method of manufacturing the same |
| US6158109A (en) * | 1996-03-20 | 2000-12-12 | Alpine Electronics, Inc. | Coil manufacturing method using ring shaped spacer |
-
1978
- 1978-09-07 JP JP11041578A patent/JPS603276B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5537071A (en) | 1980-03-14 |
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