JPH03273800A - Dome type loudspeaker - Google Patents
Dome type loudspeakerInfo
- Publication number
- JPH03273800A JPH03273800A JP7303390A JP7303390A JPH03273800A JP H03273800 A JPH03273800 A JP H03273800A JP 7303390 A JP7303390 A JP 7303390A JP 7303390 A JP7303390 A JP 7303390A JP H03273800 A JPH03273800 A JP H03273800A
- Authority
- JP
- Japan
- Prior art keywords
- dome
- diaphragm
- voice coil
- outer periphery
- cylindrical
- 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
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は周波数特性を改善したドーム型スピーカに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dome-shaped speaker with improved frequency characteristics.
従来の技術
近年、高品質なデジタルソースを再生するためにドーム
型スピーカを用いて再生周波数帯域を広げることが実施
されている。2. Description of the Related Art In recent years, dome-shaped speakers have been used to widen the reproduction frequency band in order to reproduce high-quality digital sources.
第３図は、従来の一般的なドーム型スピーカの構成を示
す断面図である。FIG. 3 is a sectional view showing the configuration of a conventional general dome-shaped speaker.
第３図に示すように、ボイスコイル２２はボイスコイル
ボビン２８の上に巻かれ、ボイスコイルボビン２８は振
動板２１に接着されている。マグネット２Ｂの表面にプ
レート２５が、裏面にヨーク２７が接着され界磁部を構
成している。エツジ２３の外周はプレート２５に取り付
けられたフレーム２４に接着されている。また、エツジ
２３の内周は振動板２１の外周水平部に接着され、ボイ
スコイル２２およびボイスコイルボビン２８がプレート
２５とヨーク２７と０間のギャップ部分に接触しないよ
うに構成されている。As shown in FIG. 3, the voice coil 22 is wound on a voice coil bobbin 28, and the voice coil bobbin 28 is bonded to the diaphragm 21. A plate 25 is bonded to the front surface of the magnet 2B, and a yoke 27 is bonded to the back surface of the magnet 2B to form a field section. The outer periphery of the edge 23 is glued to a frame 24 attached to the plate 25. Further, the inner periphery of the edge 23 is bonded to the horizontal outer periphery of the diaphragm 21 so that the voice coil 22 and the voice coil bobbin 28 do not come into contact with the gap between the plate 25 and the yoke 27.
ところで、第３図に示すような極めて一般的なドーム型
スピーカの構成では、ボイスコイル２２の振動は、ボイ
スコイルボビン２８と、ボイスコイルボビン２８と振動
板２１との間の接着剤とを介して振動板２１に伝達され
ることになるため、高域再生限界周波数（以下Ｆｈと呼
ぶ）が往々にして低下してしまいがちであった。By the way, in the configuration of an extremely common dome-shaped speaker as shown in FIG. Since the signal is transmitted to the plate 21, the high frequency reproduction limit frequency (hereinafter referred to as Fh) often tends to decrease.
従来、Ｆｈを高めるためドーム型スピーカとして、 「
ラジオ技術Ｊ １９８２年３月臨時増刊号１９６頁に示
すような構成のものがあった。以下、その構成について
第２図を参照しながら説明する。Conventionally, in order to increase Fh, as a dome-shaped speaker,
There was a structure as shown on page 196 of the March 1982 special issue of Radio Technology J. The configuration will be explained below with reference to FIG. 2.
第２図に示すように、ボイスコイル１２はその端部が振
動板１１の外周水平部に直接接着されている。また、エ
ツジ１３はボイスコイル１２がプレート１５とヨーク１
７との間のギャップに接触することなく振動できるよう
に、その一方は振動板１１の外周水平部に接着され、他
方はフレーム１４に支持されている。その他は第３図上
同様である。As shown in FIG. 2, the end of the voice coil 12 is directly bonded to the outer horizontal portion of the diaphragm 11. In addition, the edge 13 has a voice coil 12 connected to a plate 15 and a yoke 1.
One of them is bonded to the outer peripheral horizontal part of the diaphragm 11, and the other is supported by the frame 14 so that it can vibrate without contacting the gap between the diaphragm 11 and the diaphragm 7. Other details are the same as those shown in FIG.
したがって、ボイスコイル１２の振動は第３図に示すよ
うなボイスコイルボビンを介することなく、直接振動板
１１に伝達されることになる。Therefore, the vibrations of the voice coil 12 are directly transmitted to the diaphragm 11 without going through the voice coil bobbin as shown in FIG.
発明が解決しようとする課題
しかしながら従来のドーム型スピーカでは、大入力が入
って大振幅をしたとき、振動板１１がヨーク１７に接触
しないようにおよびエツジ１３がプレート１５に接触し
ないように構成されているために、ボイスコイル１２を
プレート１５とヨーク１７との間のギャップ部分の長さ
よりも長く（図中Ｈ）Ｌなければならなかった。そのた
めにスピーカの能率（特性）が低下してしまうばかりで
なく、ボイスコイル１２の重量が重くなるためにＦｈが
十分に高くなりにくい等の問題があった。Problems to be Solved by the Invention However, conventional dome-shaped speakers are configured so that the diaphragm 11 does not come into contact with the yoke 17 and the edge 13 does not come into contact with the plate 15 when a large input is applied and a large amplitude is generated. Therefore, the voice coil 12 had to be longer (H in the figure) than the length of the gap between the plate 15 and the yoke 17. This not only reduces the efficiency (characteristics) of the speaker, but also increases the weight of the voice coil 12, causing problems such as difficulty in achieving a sufficiently high Fh.
本発明は上記課題を解決するもので、スピーカの能率を
低下させることなくＦｈを高め、再生周波数帯域の広い
ドーム型スピーカを提供することを目的としている。The present invention has been made to solve the above problems, and aims to provide a dome-shaped speaker that increases Fh without reducing the efficiency of the speaker and has a wide reproduction frequency band.
課題を解決するための手段
本発明は上記目的を達成するために、ドーム部とこのド
ーム部外周より延長して設けた円筒部とこの円筒部下端
部の外周側に設けた水平部とを一体に成型した振動板と
、前記水平部に端部が接着されたボイスコイルと、前記
振動板のドーム部と円筒部の境界付近に接着されたエツ
ジとを備えてなるものである。Means for Solving the Problems In order to achieve the above object, the present invention integrates a dome part, a cylindrical part extending from the outer periphery of the dome part, and a horizontal part provided on the outer periphery side of the lower end of the cylinder. The diaphragm includes a diaphragm molded into a diaphragm, a voice coil whose end portion is bonded to the horizontal portion, and an edge bonded near the boundary between the dome portion and the cylindrical portion of the diaphragm.
作用
本発明は上記した構成により、ボイスコイルの幅を長く
する必要がないため能率が低下することがなく、またボ
イスコイルボビンを介していないので、およびボイスコ
イルが重くならないので、Ｆｈを高くすることができる
ものである。Effect of the Invention With the above-described configuration, the present invention does not require increasing the width of the voice coil, so efficiency does not decrease, and since the voice coil is not provided through a bobbin, and the voice coil does not become heavy, it is possible to increase Fh. It is something that can be done.
実施例
以下、本発明の一実施例について第１図を参照しながら
説明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG.
第１図は、本発明のドーム型スピーカの一実施例を示す
断面図である。FIG. 1 is a sectional view showing an embodiment of a dome-shaped speaker of the present invention.
図に示すように、振動板１は、ドーム部１ａとその外周
より延長して設けた円筒部１ｂと、その円筒部１ｂの下
端部の外周側に設けた水平部１ｃとを一体に成型してい
る。振動板１の水平部１ｃにはボイスコイル２の端部が
接着されている。上記円筒部１ｂの長さを、大振幅時に
振動板１およびエツジ３がヨーク７やプレート５に接触
しない長さに設定することにより、ボイスコイル２の長
さは一般のドーム型スピーカと同様に、プレート５とヨ
ーク７との間のギャップの長さ、つまりプレート５の厚
さ（図中Ｗ）とほとんど同じ程度でよい。マグネット６
の表面にプレート５が、裏面にヨーク７が接着され界磁
部を構成している。フレーム４はプレート５に取り付け
られ、エツジ３の外周部はフレーム４に取り付けられて
いる。振動板１のドーム部１ａと円筒部１ｂの境界付近
にエツジ３の内周部が接着され、ボイスコイル２がギャ
ップに接触することなく振動できるように支持されてい
る。As shown in the figure, the diaphragm 1 is formed by integrally molding a dome portion 1a, a cylindrical portion 1b extending from the outer periphery of the dome portion 1a, and a horizontal portion 1c provided on the outer periphery side of the lower end of the cylindrical portion 1b. ing. The end of the voice coil 2 is bonded to the horizontal portion 1c of the diaphragm 1. By setting the length of the cylindrical portion 1b to such a length that the diaphragm 1 and edge 3 do not come into contact with the yoke 7 or plate 5 during large amplitude, the length of the voice coil 2 can be made the same as that of a general dome-shaped speaker. , the length of the gap between the plate 5 and the yoke 7, that is, the thickness of the plate 5 (W in the figure) may be approximately the same. magnet 6
A plate 5 is adhered to the front surface and a yoke 7 is adhered to the back surface of the magnetic field part. The frame 4 is attached to the plate 5, and the outer periphery of the edge 3 is attached to the frame 4. The inner peripheral part of the edge 3 is bonded near the boundary between the dome part 1a and the cylindrical part 1b of the diaphragm 1, and the voice coil 2 is supported so as to be able to vibrate without coming into contact with the gap.
以上のような構成において以下その動作を説明する。ボ
イスコイル２が振動するとその振動は直接振動板１の円
筒部１ｂに伝わりドーム部１ａを振動させる。この円筒
部１ｂとドーム部１ａは一体になっているので、ボイス
コイルボビンを介した場合に発生しがちな不要共振や伝
達損失がなく、Ｆｈを高くすることができる。また、振
動板１の円筒部１ｂの長さを大振幅時に振動板１および
エツジ３がヨーク７やプレート５に接触しない長さに設
定することにより、ボイスコイル２の長さはプレート５
とヨーク７との間のギャップの長さ、つまりプレート５
の厚さとほとんど同じ程度でよいので能率の低下が起こ
らない。The operation of the above configuration will be explained below. When the voice coil 2 vibrates, the vibration is directly transmitted to the cylindrical portion 1b of the diaphragm 1, causing the dome portion 1a to vibrate. Since the cylindrical portion 1b and the dome portion 1a are integrated, there is no unnecessary resonance or transmission loss that tends to occur when a voice coil bobbin is used, and Fh can be increased. In addition, by setting the length of the cylindrical portion 1b of the diaphragm 1 to a length that prevents the diaphragm 1 and the edges 3 from coming into contact with the yoke 7 or the plate 5 during large amplitude, the length of the voice coil 2 can be adjusted to the length of the plate 5.
and the length of the gap between plate 5 and yoke 7, i.e. plate 5
Since the thickness can be almost the same as that of , there is no reduction in efficiency.
このように本実施例のドーム型スピーカによれば、ボイ
スコイル２の振動はボイスコイルボビンを介さずに直接
振動板１に伝達されるばかりでなく、ボイスコイル２の
長さを第２図の従来例に示したように長くしなくてもよ
いのでボイスコイル２が重くならず、Ｆｈを高くできる
。およびスピーカの能率の低下もない。As described above, according to the dome-shaped speaker of this embodiment, not only is the vibration of the voice coil 2 directly transmitted to the diaphragm 1 without going through the voice coil bobbin, but also the length of the voice coil 2 is shorter than that of the conventional speaker shown in FIG. Since it does not have to be as long as shown in the example, the voice coil 2 does not become heavy and Fh can be increased. And there is no decrease in speaker efficiency.
なお本実施例においてはエツジ３の形状がフラットであ
るが、これがロール状、その他の形状であってもよいこ
とは言うまでもない。また振動板１のドーム部と円筒部
との境目がシャープでなくＲで連続的につながっていて
も構わない。また振動板１の円筒部とこの下端部の外周
側に設けた水平部との境目がシャープでなくＲで連続的
につながっていても、ボイスコイル２の端部を振動板１
に付ける接着剤がこのＲ部とボイスコイル２の端部との
間を充填すれば、何ら問題はない。Although the edge 3 has a flat shape in this embodiment, it goes without saying that it may have a roll shape or other shapes. Further, the boundary between the dome portion and the cylindrical portion of the diaphragm 1 may not be sharp, but may be continuous with an R. Furthermore, even if the boundary between the cylindrical part of the diaphragm 1 and the horizontal part provided on the outer circumferential side of the lower end part is not sharp but is continuous with an R, the end of the voice coil 2 is connected to the diaphragm 1.
As long as the adhesive applied to the voice coil 2 fills the space between this R portion and the end of the voice coil 2, there will be no problem.
発明の効果
以上の説明から明らかなように、本発明によれば、ドー
ム部とこのドーム部外周より延長して設けた円筒部とこ
の円筒部下端部の外周側に設けた水平部とを一体に成型
した振動板と、上記水平部に端部を接着されたボイスコ
イルと、前記振動板のドーム部と円筒部の境界付近に接
着されたエツジとを備えたことにより、ボイスコイルの
振動はボイスコイルボビンを介さずに直接振動板に伝達
されるばかりでなく、ボイスコイルの長さを長くしなく
てもよいので、スピーカの能率の低下を避けるとともに
Ｆｈを高くした、再生周波数帯域の広いドーム型スピー
カを提供できる。Effects of the Invention As is clear from the above description, according to the present invention, the dome part, the cylindrical part extending from the outer periphery of the dome part, and the horizontal part provided on the outer periphery side of the lower end of the cylinder are integrated. The voice coil is equipped with a diaphragm molded into a shape, a voice coil whose end is glued to the horizontal part, and an edge glued near the boundary between the dome part and the cylindrical part of the diaphragm, so that the vibration of the voice coil can be reduced. A dome with a wide playback frequency band that not only transmits directly to the diaphragm without going through the voice coil bobbin, but also eliminates the need to increase the length of the voice coil, avoiding a drop in speaker efficiency and increasing Fh. We can provide type speakers.
第１図は本発明の一実施例のドーム型スピーカの構造を
示す断面図、第２図は従来のＦｈを高めたドーム型スピ
ーカの構造を示す断面図、第３図は従来の一般的なドー
ム型スピーカの構造を示す断面図である。
１・・・振動板、 ２・・・ボイスコイル、 ３・・
・エツジ。Fig. 1 is a sectional view showing the structure of a dome-shaped speaker according to an embodiment of the present invention, Fig. 2 is a sectional view showing the structure of a conventional dome-shaped speaker with increased Fh, and Fig. 3 is a sectional view showing the structure of a conventional dome-shaped speaker with increased Fh. FIG. 2 is a cross-sectional view showing the structure of a dome-shaped speaker. 1...Diaphragm, 2...Voice coil, 3...
・Etsuji.
Claims (1)
とこの円筒部下端部の外周側に設けた水平部とを一体に
成型した振動板と、前記水平部に端部が接着されたボイ
スコイルと、前記振動板のドーム部と円筒部の境界付近
に接着されたエッジより構成されたことを特徴とするド
ーム型スピーカ。A diaphragm that is integrally formed with a dome part, a cylindrical part extending from the outer periphery of the dome part, and a horizontal part provided on the outer periphery side of the lower end of the cylinder, and a voice whose end part is glued to the horizontal part. A dome-shaped speaker comprising a coil and an edge bonded near the boundary between the dome part and the cylindrical part of the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7303390A JPH03273800A (en) | 1990-03-22 | 1990-03-22 | Dome type loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7303390A JPH03273800A (en) | 1990-03-22 | 1990-03-22 | Dome type loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03273800A true JPH03273800A (en) | 1991-12-04 |
Family
ID=13506632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7303390A Pending JPH03273800A (en) | 1990-03-22 | 1990-03-22 | Dome type loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03273800A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876079A1 (en) * | 1997-04-30 | 1998-11-04 | AKG Acoustics GmbH | Electroacoustic transducer |
| EP1796426A2 (en) | 2005-12-09 | 2007-06-13 | Sony Corporation | Speaker and method of outputting acoustic sound |
-
1990
- 1990-03-22 JP JP7303390A patent/JPH03273800A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876079A1 (en) * | 1997-04-30 | 1998-11-04 | AKG Acoustics GmbH | Electroacoustic transducer |
| EP1796426A2 (en) | 2005-12-09 | 2007-06-13 | Sony Corporation | Speaker and method of outputting acoustic sound |
| EP1796426A3 (en) * | 2005-12-09 | 2007-08-22 | Sony Corporation | Speaker and method of outputting acoustic sound |
| EP2268061A1 (en) * | 2005-12-09 | 2010-12-29 | Sony Corporation | Speaker and method of outputting acoustic sound |
| US8090140B2 (en) | 2005-12-09 | 2012-01-03 | Sony Corporation | Speaker and method of outputting acoustic sound |
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