JPH0227675Y2 - - Google Patents
Info
- Publication number
- JPH0227675Y2 JPH0227675Y2 JP7177184U JP7177184U JPH0227675Y2 JP H0227675 Y2 JPH0227675 Y2 JP H0227675Y2 JP 7177184 U JP7177184 U JP 7177184U JP 7177184 U JP7177184 U JP 7177184U JP H0227675 Y2 JPH0227675 Y2 JP H0227675Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- flat
- flat plate
- vibration
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【考案の詳細な説明】
考案の目的
〔産業上の利用分野〕
この考案は長楕円形もしくは縦横比の大きい長
方形の平板型スピーカーにおける振動伝達部材の
形状に関する。[Detailed Description of the Invention] Purpose of the Invention [Industrial Field of Application] This invention relates to the shape of a vibration transmission member in a flat-plate speaker that is oblong or rectangular with a large aspect ratio.
ボイスコイルにより平板振動板のある特定の場
所を駆動する平板型スピーカーは平板振動板が中
域周波数で分割振動を生じるため周波数特性上に
著しいピークやデイツプを生じて再生音質を悪く
する欠点があつた。
Flat-plate speakers that use a voice coil to drive a specific location on a flat-plate diaphragm have the disadvantage that the flat-plate diaphragm produces divided vibrations at mid-range frequencies, resulting in significant peaks and dips in the frequency response, which deteriorates the quality of reproduced sound. Ta.
この欠点を除くため、例えば(1)実公昭58−
16314号に記載された考案の如くコーン型の駆動
部材により平板振動板の低次の分割振動の節部を
駆動する方式、また(2)実開昭57−43694号に記載
された従来例の如く大寸法のボイスコイルを使用
し、当該ボイスコイルボビンを補強リブとして利
用するもの、或は(3)実開昭57−4892号記載された
如く襞付きのコーン状駆動部材１枚を使用して、
節線近傍を駆動し、より高次の分割共振を抑制す
る方法が存在するが、これらの第１の方法は駆動
される節部に相当するモード以外の分割振動は防
止できず、第２の方法は特に長方形の場合製造が
困難で、高価なものとなること、また更に第３の
方法においては、特に、振動板形状が長方形や長
楕円形の場合、360゜方向の等方性形状を有する支
持兼伝達部材では効果が少なく、また変形等方性
にした場合、幅の狭い方向は成形が困難となる。
特に縦横比が大きな長方形及び長楕円形について
は長手方向に対する補強，節駆動が必要となり、
この種の形状の駆動部材では効果が少ないという
欠点があつた。 In order to eliminate this drawback, for example (1)
16314, in which a cone-shaped drive member drives the low-order divided vibration nodes of a flat diaphragm, and (2) the conventional method described in Utility Model Application Publication No. 57-43694. (3) Using a large-sized voice coil and using the voice coil bobbin as a reinforcing rib, or (3) Using one cone-shaped drive member with pleats as described in Utility Model Application No. 57-4892. ,
There are methods to suppress higher-order split resonance by driving the vicinity of the nodal line, but these first methods cannot prevent split vibrations other than modes corresponding to the driven node, and the second This method is difficult and expensive to manufacture, especially when the diaphragm is rectangular, and the third method requires an isotropic shape in the 360° direction, especially when the diaphragm shape is rectangular or oblong. The supporting and transmitting member that has this structure has little effect, and if the deformation is isotropic, it will be difficult to mold in the narrow direction.
In particular, for rectangular and long oval shapes with a large aspect ratio, longitudinal reinforcement and joint drive are required.
A driving member having this type of shape has the drawback of being less effective.
本考案は上記した従来技術の欠点を解決し、特
殊な形状の振動伝達部材を使用して分割振動を抑
制することにより、安価で性能の優れた長楕円も
しくは長方形の平板型スピーカーを得ることを目
的とする。
The present invention solves the above-mentioned drawbacks of the conventional technology and suppresses split vibration using a specially shaped vibration transmission member, thereby making it possible to obtain an oblong or rectangular flat plate speaker with excellent performance at low cost. purpose.
考案の構成
〔問題解決の手段〕
本考案の平板スピーカーの構造を示す第１図，
第２図において、周辺がエツジ５により支持され
た長楕円形もしくは長方形の平板振動板１の裏面
に下端がボイスコイルボビン３に結合された振動
伝達部材２が連結されている。振動伝達部材２は
第２図の如く平板振動板１との連結部は当該平板
振動板１とほぼ同形状であつて、連結部から下端
のボイスコイルボビン３結合部に向つて錘面を形
成している。さらに、長手方向両端部に長手方向
と平行に、平板振動板１の長手方向の１次振動モ
ードの節線Ｎを含む大きさの補強用襞４が形成さ
れ、襞４の上面も平板振動板に連結されている。
この振動伝達部材２は下端部をダンパ６で支持さ
れ、平板振動板１と一体となつて前記エツジ５と
ダンパ６によりフレーム７内の所定位置に保持さ
れる。Structure of the invention [Means for solving the problem] Figure 1 shows the structure of the flat plate speaker of the invention.
In FIG. 2, a vibration transmitting member 2 whose lower end is connected to a voice coil bobbin 3 is connected to the back surface of an oblong or rectangular flat plate diaphragm 1 whose periphery is supported by edges 5. As shown in FIG. 2, the vibration transmitting member 2 has a connecting portion with the flat diaphragm 1 having almost the same shape as the flat diaphragm 1, and forms a conical surface from the connecting portion toward the connecting portion of the voice coil bobbin 3 at the lower end. ing. Furthermore, reinforcing folds 4 having a size that includes the nodal line N of the primary vibration mode in the longitudinal direction of the flat plate diaphragm 1 are formed parallel to the longitudinal direction at both ends in the longitudinal direction, and the upper surface of the pleat 4 also serves as a plate diaphragm. is connected to.
The vibration transmitting member 2 has its lower end supported by a damper 6, and is held in a predetermined position within the frame 7 by the edge 5 and the damper 6 integrally with the flat diaphragm 1.
ボイスコイル８に発生した駆動力はボイスコイ
ルボビン３を介して前記振動伝達部材２を伝播し
て、錘面部によつて平板振動板１の外周部を、襞
４により外周から１次振動モードの節線を含む広
い領域を駆動されるので、振動板長手方向に対す
る分割振動は抑制され、また振動板短辺方向につ
いては、その形状からして寸法が極めて小さく相
対的に剛性が大きいため分割振動周波数は極めて
高くなつて、結果的に可聴帯域内ではすべての分
割振動は抑制されて、周波数特性は平坦となる。
The driving force generated in the voice coil 8 is propagated through the vibration transmission member 2 via the voice coil bobbin 3, and is transmitted to the outer periphery of the flat diaphragm 1 by the weight surface and from the outer periphery by the folds 4 to the nodes of the primary vibration mode. Since it is driven over a wide area including the lines, the split vibration in the longitudinal direction of the diaphragm is suppressed, and in the short side direction of the diaphragm, the split vibration frequency is suppressed due to its extremely small dimensions and relatively high rigidity. becomes extremely high, and as a result, all split vibrations within the audible band are suppressed and the frequency characteristics become flat.
考案の効果
第３図の周波数特性において、実線は本考案平
板型スピーカーの周波数特性、点線は従来構造の
平板型スピーカーの周波数特性である。実施例ス
ピーカーの振動板寸法は100mm×50mmの長方形で
ある。2KHzから15KHzにかけて本考案平板型ス
ピーカーにおいて、ピーク、デイツプが消失して
いることから本考案による構成の効果が認められ
る。Effects of the invention In the frequency characteristics shown in FIG. 3, the solid line is the frequency characteristic of the flat-plate speaker of the present invention, and the dotted line is the frequency characteristic of the flat-plate speaker of the conventional structure. The dimensions of the diaphragm of the example speaker are rectangles of 100 mm x 50 mm. The effect of the configuration according to the present invention can be recognized from the fact that peaks and dips disappear in the flat speaker according to the present invention from 2KHz to 15KHz.
以上、本考案はボイスコイルに結合した振動伝
達部材により、長楕円形もしくは長方形の平板振
動板の外周辺と、１次振動モードの節線を含む領
域とを駆動し、振動板の分割振動を抑制し、縦横
比の大きい平板型スピーカーにおいて、簡単な構
造で優れた周波数特性を有する平板型スピーカー
である。 As described above, the present invention uses a vibration transmitting member coupled to a voice coil to drive the outer periphery of an oblong or rectangular flat plate diaphragm and the area including the nodal line of the primary vibration mode, thereby causing the divided vibration of the diaphragm. This flat-plate speaker has a simple structure and excellent frequency characteristics, and has a high aspect ratio.
第１図は本考案平板型スピーカーの断面図、第
２図は振動伝達部材の斜視図、第３図は周波数特
性図である。
１は平板振動板、２は振動伝達部材、３はボイ
スコイルボビン、４は補強用襞である。
FIG. 1 is a sectional view of the flat-plate speaker of the present invention, FIG. 2 is a perspective view of a vibration transmitting member, and FIG. 3 is a frequency characteristic diagram. 1 is a flat diaphragm, 2 is a vibration transmission member, 3 is a voice coil bobbin, and 4 is a reinforcing fold.
Claims (1)
端が前記平板振動板１の背面に連結され、他端が
ボイスコイルボビン３に連結された振動伝達部材
２とを備えた平板型スピーカーにおいて、前記振
動伝達部材２の形状が、平板振動板１との連結面
において当該平板振動板１の外形とほぼ等しく、
且つ平板振動板１の長径もしくは長辺方向に平行
に、長手方向の１次の振動モードの節線Ｎに達す
る大きさの補強用襞４を有する如き形状であるこ
とを特徴とする平板型スピーカー。 A flat plate speaker comprising an oblong or rectangular flat plate diaphragm 1 and a vibration transmission member 2 whose one end is connected to the back surface of the flat plate diaphragm 1 and whose other end is connected to the voice coil bobbin 3. The shape of the transmission member 2 is approximately equal to the outer shape of the flat diaphragm 1 at the connection surface with the flat diaphragm 1,
A flat plate speaker characterized in that the flat plate diaphragm 1 has a reinforcing fold 4 parallel to the long axis or long side direction of a size reaching the nodal line N of the first vibration mode in the longitudinal direction. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177184U JPS60184397U (en) | 1984-05-15 | 1984-05-15 | flat speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7177184U JPS60184397U (en) | 1984-05-15 | 1984-05-15 | flat speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60184397U JPS60184397U (en) | 1985-12-06 |
| JPH0227675Y2 true JPH0227675Y2 (en) | 1990-07-25 |
Family
ID=30609558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7177184U Granted JPS60184397U (en) | 1984-05-15 | 1984-05-15 | flat speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184397U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4603972B2 (en) * | 2005-12-21 | 2010-12-22 | パイオニア株式会社 | Diaphragm for speaker device, speaker device, and mobile phone |
| JP4617518B2 (en) * | 2005-12-28 | 2011-01-26 | オンキヨー株式会社 | Speaker diaphragm and speaker using the same |
| JPWO2010050068A1 (en) * | 2008-10-31 | 2012-03-29 | パイオニア株式会社 | Speaker device and automobile |
-
1984
- 1984-05-15 JP JP7177184U patent/JPS60184397U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60184397U (en) | 1985-12-06 |
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