JPS59868Y2 - flat speaker - Google Patents
flat speakerInfo
- Publication number
- JPS59868Y2 JPS59868Y2 JP4896679U JP4896679U JPS59868Y2 JP S59868 Y2 JPS59868 Y2 JP S59868Y2 JP 4896679 U JP4896679 U JP 4896679U JP 4896679 U JP4896679 U JP 4896679U JP S59868 Y2 JPS59868 Y2 JP S59868Y2
- Authority
- JP
- Japan
- Prior art keywords
- flat
- diaphragm
- speaker
- ring
- cone
- 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
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
【考案の詳細な説明】 本考案は平板スピーカの改良に関するものである。[Detailed explanation of the idea] The present invention relates to an improvement of a flat plate speaker.
従来から、スピーカ振動板はコーン形状をなしたものが
広く用いられている。Conventionally, cone-shaped speaker diaphragms have been widely used.
これはコーン形状が構造状極めて強固なために、振動板
が分割振動を起こしに＜＜、従って広い再生帯域を容易
に得られたためである。This is because the cone shape has an extremely strong structure, which makes it difficult for the diaphragm to cause split vibration, making it easy to obtain a wide reproduction band.
また、振動板材料としても天然繊維を用いた紙コーンの
ように安価なものを用いても十分その性能が遠戚されて
いた。In addition, even if inexpensive materials such as paper cones made of natural fibers were used as the material for the diaphragm, their performance was sufficiently improved.
このように広く用いられていたコーン型スピーカは、コ
ーン形状の凹みのために、音圧周波数特性上に大きなピ
ーク・テ゛イップが発生することが欠点としてあげられ
ている。The cone-shaped speaker, which has been widely used in this way, has a drawback in that a large peak tip occurs in the sound pressure frequency characteristic due to the concave shape of the cone.
しかもこのピーク・ディップが発生する周波数が、本来
振動板がピストン振動領域であるために、最近の高性能
スピーカの要求を満たすには大きな障害となってきた。Moreover, since the frequency at which this peak/dip occurs is originally in the piston vibration range of the diaphragm, this has become a major obstacle in meeting the demands of recent high-performance speakers.
また、コーン形状によるピーク・ディップをなくすため
には平板状の振動板を用いればよいが、単に平板状振動
板の中央部を駆動するだけでは、平板のために曲げ振動
が起きやすく、帯域的にはコーン形状の士以下程度しか
得られず実用には供さなかった。In addition, a flat diaphragm can be used to eliminate peaks and dips due to the cone shape, but simply driving the center of the flat diaphragm tends to cause bending vibrations due to the flat plate. However, it was not possible to put it into practical use as it was only possible to obtain a cone shape or less.
一方、この平板型スピーカの欠点を除去するものとして
、リング状平板振動板の軸対称−次分割振動の節を駆動
する方法が考えられる。On the other hand, as a way to eliminate the drawbacks of this flat plate type speaker, a method of driving an axially symmetrical-order divided vibration node of a ring-shaped flat plate diaphragm can be considered.
本方法ではピストン領域をコーン型スピーカと同等以上
に出来る利点と音圧周波数特性を平坦にする利点を有す
ることができる。This method has the advantage that the piston area can be made equal to or larger than that of a cone-type speaker, and the advantage that the sound pressure frequency characteristic can be flattened.
反面、平坦な特性を得られるために、エツジの共振での
小さなピーク・ディップが目立つことがある。On the other hand, because flat characteristics are obtained, small peaks and dips at edge resonances may become noticeable.
第１図は、従来の平板形スピーカの断面図であって、１
は平板状の振動板、２はこれを駆動するボイスコイル、
３は平板状振動板の外周部につながれこれを支持するエ
ツジ、４はボイスコイル２につながれ、振動系の直線性
を保持するスパイダ、５は磁気回路部である。FIG. 1 is a cross-sectional view of a conventional flat speaker.
is a flat diaphragm, 2 is a voice coil that drives this,
Reference numeral 3 designates an edge connected to the outer periphery of the flat diaphragm to support it, 4 a spider connected to the voice coil 2 and maintaining the linearity of the vibration system, and 5 a magnetic circuit section.
このように構成された平板状振動板を用いた平板型スピ
ーカは、平坦な音圧周波数特性を得ることが出来た反面
、振動板が曲げ起こしやすく、使用帯域はおのずと制限
されていた。Although a flat speaker using a flat diaphragm configured in this manner was able to obtain flat sound pressure frequency characteristics, the diaphragm was prone to bending, and its usable band was naturally limited.
第２図はこの考案の基礎となるリング平板を用いた平板
型スピーカの断面図であって、１はリング状平板、２は
リング状平板１の軸対称１次分割振動の節を駆動するボ
イスコイル、３はリング状平板の内外周につながれこれ
を支持するエツジ、４は、ボイス・コイル２につながれ
、振動系の直線性を保持するスパイダ、５は磁気回路部
である。FIG. 2 is a cross-sectional view of a flat speaker using a ring-shaped flat plate, which is the basis of this invention. 1 is a ring-shaped flat plate, and 2 is a voice that drives nodes of the axisymmetric primary division vibration of the ring-shaped flat plate 1. The coil, 3, is an edge that is connected to the inner and outer periphery of the ring-shaped flat plate and supports it, 4 is a spider that is connected to the voice coil 2 and maintains the linearity of the vibration system, and 5 is a magnetic circuit section.
このように構成された平板型スピーカは、平板型スピー
カの特徴である音圧周波数特性の平坦さと、コーン型ス
ピーカの特徴である広いピストン領域とを兼ね備えてい
た。The flat speaker configured in this manner has both the flat sound pressure frequency characteristic characteristic of a flat speaker and the wide piston area characteristic of a cone speaker.
しかし、音圧周波数特性が平坦なために、エツジの共振
によるピーク・ディップが目立つ欠点があった。However, because the sound pressure frequency characteristics are flat, there is a drawback that peak dips due to edge resonance are noticeable.
本考案は、リング状の平板ハニカム振動板の裏面の内周
部および外周部に補強リングを貼着して、これらエツジ
の共振による小さなピーク・ディップも押え、より平坦
な音圧周波数特性を可能にするものである。In this invention, reinforcing rings are attached to the inner and outer peripheries of the back side of the ring-shaped flat honeycomb diaphragm to suppress small peak dips caused by the resonance of these edges, making it possible to achieve flatter sound pressure frequency characteristics. It is meant to be.
第３図は、本考案によるリング平板を用いた平板型スピ
ーカー実施例の断面図で、１はハニカム構造のリング状
平板、２はリング状平板１の裏面の軸対称１次分割振動
の節位置に結合され、このリング状平板１を駆動するボ
イスコイル、３はリング状平板の内外周につながれこれ
を支持するエツジ、４はボイスコイル２につながれ、振
動系の直線性を保持するスパイダ、５は磁気回路、６は
、振動板の内周部及び外周部の裏面に貼着されたリング
である。FIG. 3 is a cross-sectional view of an embodiment of a flat-plate speaker using a ring-shaped flat plate according to the present invention, in which 1 is a ring-shaped flat plate with a honeycomb structure, and 2 is the node position of the axisymmetric primary division vibration on the back side of the ring-shaped flat plate 1. 3 is an edge connected to the inner and outer periphery of the ring-shaped flat plate to support it; 4 is a spider connected to the voice coil 2 to maintain the linearity of the vibration system; 1 is a magnetic circuit, and 6 is a ring attached to the inner and outer surfaces of the diaphragm.
このように構成された本考案の一実施例による平板型ス
ピーカでは、単にリング状平板を振動板に用いたスピー
カにくらべより平坦な音圧周波数特性が可能になるもの
である。The flat speaker according to the embodiment of the present invention configured as described above enables a flatter sound pressure frequency characteristic than a speaker that simply uses a ring-shaped flat plate as a diaphragm.
従来のコーン形スピーカは既に述べたようにコーン形状
の構造的な強固さにより紙コーンのように物理定数の比
較的低いものを用いても広いピストン領域を有していた
。As already mentioned, conventional cone-shaped speakers have a wide piston area even when using a material with relatively low physical constants, such as a paper cone, due to the structural strength of the cone shape.
しかし、コーンの凹みの影響で音場が乱れ、ピストン領
域中で大きなピーク・テ゛イツプを起こしていた。However, the sound field was disturbed by the effect of the dent in the cone, causing a large peak and taper in the piston area.
又、通常、この落ち込みが生じる周波数は、位相定数を
ｋ、波長をλ、振動板半径をａとすると、ｋａ＝２πａ
／λが２〜３のときに起きていた。Also, normally, the frequency at which this drop occurs is ka = 2πa, where k is the phase constant, λ is the wavelength, and a is the radius of the diaphragm.
This occurred when /λ was 2 to 3.
例えば口径２０ｃｍのスピーカでは、使用帯域である１
０００ Ｈｚ付近から落ち込みが生ずることになる。For example, for a speaker with a diameter of 20 cm, the operating band is 1
A drop occurs from around 000 Hz.
一方、コーン形スピーカはセンターキャップを通常備え
ているが、このセンターキャップからの音の放射があり
、全体として平坦な音圧周波数特性を得ることが困難で
あった。On the other hand, although cone-shaped speakers usually include a center cap, sound is radiated from the center cap, making it difficult to obtain flat sound pressure frequency characteristics as a whole.
又、エツジ共振による小さなピーク・テ゛イツプもコー
ンの音場の影響で目立つことは少なかった。Also, small peaks and taps due to edge resonance were less noticeable due to the influence of the cone's sound field.
第２図の平板型スピーカでは、振動板が平面であるため
にコーン型振動板で起きていたピーク・テ゛イツプは起
きないが、逆にエツジ共振による小さなピーク・ディッ
プが目立つ欠点があった。In the flat speaker shown in FIG. 2, since the diaphragm is flat, the peak dip that occurs with a cone diaphragm does not occur, but on the contrary, it has the disadvantage that small peak dips due to edge resonance are noticeable.
このエツジ共振によるピーク・ディップは、エツジ共振
により、振動板も変形を起こし、音の放射が乱れるため
に起きるものと予想される。This peak dip due to edge resonance is expected to occur because the diaphragm also deforms due to edge resonance, and sound radiation is disturbed.
第３図の本考案の平板型スピーカでは、リング状振動板
の内周及び外周部に補強用リングをつけているために、
エツジの共振により、振動板が変形を起こすことが少な
くなり、ピーク・テ゛イップのレベルもかなり押えるこ
とができる。In the flat speaker of the present invention shown in Fig. 3, reinforcing rings are attached to the inner and outer peripheries of the ring-shaped diaphragm.
Due to the edge resonance, the diaphragm is less likely to deform, and the peak and tip levels can be significantly suppressed.
しかも、音の放射方向と反対側の裏面にリングを設けて
いるがら、このリングが音の放射を乱すようなことがな
い
第４図は、本考案による実施例の平板スピーカと同じ口
径を有するコーン型スピーカの音圧周波数特性ａとの比
較であって、本考案による平板スピーカの音圧周波数特
性すは平坦な特性が得られている。Moreover, although a ring is provided on the back surface opposite to the direction of sound radiation, this ring does not disturb sound radiation.The ring shown in FIG. 4 has the same diameter as the flat speaker of the embodiment according to the present invention. In comparison with the sound pressure frequency characteristic a of the cone type speaker, the sound pressure frequency characteristic of the flat plate speaker according to the present invention is flat.
本考案は以上述べたように、リング状の平板ハニカム振
動板の裏面の内周部および外周部に補強ノングを貼着し
たから、この補強リングは音の放射を乱すことなく振動
板の変形を防止し、エツジの共振による小さなピーク・
ディップを押え、より平坦な音圧周波数特性を得ること
ができる。As described above, this invention has reinforcing rings attached to the inner and outer peripheries of the back side of the ring-shaped flat honeycomb diaphragm, so this reinforcing ring can prevent the deformation of the diaphragm without disturbing sound radiation. Prevents small peaks due to edge resonance.
It is possible to suppress dips and obtain flatter sound pressure frequency characteristics.
したがって、コーンスピーカに比べて音質が改善されて
いる従来の平板スピーカの音質をさらに向上させること
ができるという効果がある。Therefore, it is possible to further improve the sound quality of conventional flat speakers, which have improved sound quality compared to cone speakers.
第１図は従来の平板型スピーカの断面図、第２図は本考
案の基礎となるリング状平板型スピーカの断面図、第３
図は本考案の一実施例のリング状平板型スピーカの断面
図、第４図は本考案の一実施例のスピーカと従来のコー
ン形スピーカの音圧周波数特性の比較図である。
図中 １は振動板、２はボイスコイル、３はエツジ、４
はスパイダ、５は磁気回路、６は補強リングであって、
同一符号は同一部分あるいは相当部分を示す。Figure 1 is a cross-sectional view of a conventional flat-plate speaker, Figure 2 is a cross-sectional view of a ring-shaped flat-plate speaker that is the basis of the present invention, and Figure 3 is a cross-sectional view of a ring-shaped flat speaker that is the basis of the present invention.
The figure is a sectional view of a ring-shaped flat speaker according to an embodiment of the present invention, and FIG. 4 is a comparison diagram of the sound pressure frequency characteristics of the speaker according to an embodiment of the present invention and a conventional cone-shaped speaker. In the diagram, 1 is the diaphragm, 2 is the voice coil, 3 is the edge, 4
is a spider, 5 is a magnetic circuit, 6 is a reinforcing ring,
The same reference numerals indicate the same or equivalent parts.
Claims (1)
軸対称−次分割振動の節位置にボイスリングを結合する
と共に、前記裏面の内周部および外周部に補強リングを
貼着したことを特徴とする平板スピーカ。A voice ring is coupled to the back surface of a non-long-shaped flat honeycomb diaphragm at the node position of the axially symmetrical-order divided vibration of this diaphragm, and reinforcing rings are attached to the inner and outer periphery of the back surface. Features a flat speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4896679U JPS59868Y2 (en) | 1979-04-13 | 1979-04-13 | flat speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4896679U JPS59868Y2 (en) | 1979-04-13 | 1979-04-13 | flat speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55150578U JPS55150578U (en) | 1980-10-30 |
| JPS59868Y2 true JPS59868Y2 (en) | 1984-01-11 |
Family
ID=28933679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4896679U Expired JPS59868Y2 (en) | 1979-04-13 | 1979-04-13 | flat speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59868Y2 (en) |
-
1979
- 1979-04-13 JP JP4896679U patent/JPS59868Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55150578U (en) | 1980-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7599511B2 (en) | Loudspeaker with undulated membrane | |
| US4146756A (en) | Moving voice coil transducer with diaphragm having concentric sections of opposite curvature | |
| JP2007533229A (en) | Diaphragm for speaker drive unit or microphone | |
| JPS6326959B2 (en) | ||
| US3955055A (en) | Dynamic loudspeaker | |
| US3154173A (en) | Loudspeaker cone suspension | |
| WO2020059638A1 (en) | Speaker vibration plate | |
| US4086450A (en) | Variable thickness cone for a dynamic speaker and quality control inspection method therefor | |
| JPS59868Y2 (en) | flat speaker | |
| JPS62248398A (en) | Cone loudspeaker | |
| JPH03175800A (en) | Piezoelectric speaker | |
| JPH09275598A (en) | Centering spider for speaker and speaker using it | |
| JPH04115698A (en) | Flat speaker | |
| JPH048716Y2 (en) | ||
| JPS5837186Y2 (en) | electroacoustic transducer | |
| JPH0241988Y2 (en) | ||
| JPS58222700A (en) | Flat loudspeaker | |
| JPS5816314Y2 (en) | flat speaker | |
| JPH0418316Y2 (en) | ||
| JPS6029278Y2 (en) | flat speaker | |
| JPS6349994Y2 (en) | ||
| JPS5853827Y2 (en) | speaker | |
| JP2952920B2 (en) | Speaker | |
| JPS58138196A (en) | Diaphragm for loudspeaker | |
| JPH05168091A (en) | Speaker |