JPH0129913Y2 - - Google Patents
Info
- Publication number
- JPH0129913Y2 JPH0129913Y2 JP12815184U JP12815184U JPH0129913Y2 JP H0129913 Y2 JPH0129913 Y2 JP H0129913Y2 JP 12815184 U JP12815184 U JP 12815184U JP 12815184 U JP12815184 U JP 12815184U JP H0129913 Y2 JPH0129913 Y2 JP H0129913Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- voice coil
- dome
- edge
- extension
- 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
- 239000000463 material Substances 0.000 claims description 13
- 239000007779 soft material Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000003190 viscoelastic substance Substances 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】
〔産業上の利用分野〕
この考案は電気音響機器の分野におけるドーム
型スピーカーの振動系の改良に関する。[Detailed description of the invention] [Field of industrial application] This invention relates to an improvement of the vibration system of a dome-shaped speaker in the field of electroacoustic equipment.
ドーム型スピーカーは一般的に第3図に示すご
とく、マグネツト31、センターポール32、フ
ロントプレート33、およびバツクプレート34
よりなる磁気回路のセンターポール32とフロン
トプレート33とで形成される磁気空隙に振動板
35の外周に固着したボイスコイル36が位置す
るごとくにエツジ37により振動板を支持し、ボ
イスコイル36に音声電流を通じて振動板35を
駆動し音波を放射する。
A dome-shaped speaker generally has a magnet 31, a center pole 32, a front plate 33, and a back plate 34, as shown in FIG.
The edge 37 supports the diaphragm so that the voice coil 36 fixed to the outer periphery of the diaphragm 35 is positioned in the magnetic gap formed by the center pole 32 and the front plate 33 of the magnetic circuit. The diaphragm 35 is driven through an electric current to emit sound waves.
振動板35は分割振動周波数を可及的に高くし
て周波数特性を良好にするため、ジユラルミンの
如き軽量で高剛性の材料を使用するのが通例であ
る。 The diaphragm 35 is usually made of a lightweight and highly rigid material such as duralumin in order to increase the divided vibration frequency as much as possible and improve the frequency characteristics.
ドーム型スピーカーの他の構成として、振動板
に内部損失が極めて大きい軟質材料を使用した、
いわゆるソフトドーム型スピーカーが存在する。 Another configuration of the dome-shaped speaker is that the diaphragm is made of a soft material with extremely high internal loss.
There are so-called soft dome speakers.
上記した従来例において高剛性材料を使用した
振動板は材料としての機械的内部損失が少ないた
め、ピストン振動域より高域の周波数において、
振動板周辺から伝達された振動エネルギーと振動
板中央で反射した振動エネルギーとが干渉し、所
謂***振により振動板外周附近に振動節を生じ
る。この振動節の外部と内部とでは振動板の振動
位相が相互に逆となるため当該***振の周波数
FRにおいて周波数特性上にデイツプを生じる。
またその後の高域共振周波数FHではピークを生
じて周波数特性や過度特性が劣化し、聴感を害し
ていた。
In the conventional example described above, the diaphragm using a high-rigidity material has low mechanical internal loss as a material, so at frequencies higher than the piston vibration range,
The vibration energy transmitted from the periphery of the diaphragm and the vibration energy reflected at the center of the diaphragm interfere with each other, causing vibration nodes near the outer periphery of the diaphragm due to so-called anti-resonance. Since the vibration phase of the diaphragm outside and inside this vibration node is opposite to each other, the frequency of the anti-resonance is
A dip occurs in the frequency characteristics in FR .
Furthermore, a peak was generated at the subsequent high-frequency resonance frequency FH , resulting in deterioration of the frequency characteristics and transient characteristics, which impaired the sense of hearing.
また、後者のソフトドームスピーカーでは振動
板の内部損失が極めて大きいため共振や***振は
生じにくいが、振動板質量が大きく、且つ振動エ
ネルギーが伝達しにくいのでスピーカーとしての
変換能率が極めて低い欠点があつた。 In addition, in the latter type of soft dome speaker, the internal loss of the diaphragm is extremely large, so resonance and anti-resonance are unlikely to occur, but the diaphragm has a large mass and it is difficult to transmit vibration energy, so the conversion efficiency as a speaker is extremely low. It was hot.
本考案は上記した従来例の欠点を除き、***振
が生じにくいように改良した振動系を使用して、
周波数特性や能率を良好にしたドーム型スピーカ
ーを得ることを目的とする。
The present invention eliminates the drawbacks of the conventional example described above and uses an improved vibration system to prevent anti-resonance from occurring.
The purpose is to obtain a dome-shaped speaker with good frequency characteristics and efficiency.
上記の目的を達成するために、本考案に係るド
ーム型スピーカーの振動系は、ボイスコイルボビ
ン、当該ボイスコイルボビンに捲回されたボイス
コイル、該ボイスコイルよりも小直径のドーム形
状の硬質材料振動板、および前記ボイスコイルボ
ビン上端に接着されたエツジから構成され、当該
エツジが硬質材料薄膜と軟質材料シートがラミネ
ートされた複合材料からなり、且つ内周部に前記
振動板と同曲率の延長部が一体成形され、当該延
長部には1箇所以上、硬質材料薄膜を部分的に除
去して軟質材料シートのみからなる柔軟部を設
け、前記振動板を該延長部内周辺に貼着した構成
を有する。
In order to achieve the above object, the vibration system of the dome-shaped speaker according to the present invention includes a voice coil bobbin, a voice coil wound around the voice coil bobbin, and a dome-shaped hard material diaphragm having a smaller diameter than the voice coil. , and an edge bonded to the upper end of the voice coil bobbin, the edge is made of a composite material in which a thin film of hard material and a sheet of soft material are laminated, and an extension part having the same curvature as the diaphragm is integrally formed on the inner periphery. The thin film of hard material is partially removed from one or more locations of the extended portion to provide a flexible portion made of only a sheet of soft material, and the diaphragm is adhered to the inside and periphery of the extended portion.
上記構成を有する振動系においては、振動板を
支持するエツジ延長部に設けられた柔軟部により
当該延長部の剛性が全周囲にわたつて不均一であ
り、結果的に当該延長部に結合されている振動板
の外周辺における剛性が周方向に沿つて場所的に
異なるので、前記従来例の如きFRやFHにおける
著しい***振や共振は分散され、それらに起因し
て生じる周波数特性上のデイツプやピークは消失
して平坦な周波数特性となり、同時に著しい共振
が消失することにより過度特性も良好となるの
で、再生音質は著しく改善されることとなる。
尚、その上に、ボイスコイルボビンが振動板に直
結されていないので、延長部のスチフネスがハイ
カツトフイルターとして作用し、不用な高域を遮
断する作用を有する。
In the vibration system having the above configuration, the rigidity of the edge extension that supports the diaphragm is nonuniform over the entire circumference due to the flexible part provided in the edge extension, and as a result, the stiffness of the edge extension that supports the diaphragm is not uniform over the entire circumference. Since the stiffness of the outer periphery of the diaphragm differs along the circumferential direction, significant anti-resonance and resonance in F R and F H as in the conventional example are dispersed, and the frequency characteristics caused by these are dispersed. Dips and peaks disappear, resulting in flat frequency characteristics, and at the same time, significant resonance disappears, resulting in good transient characteristics, resulting in a marked improvement in reproduced sound quality.
Furthermore, since the voice coil bobbin is not directly connected to the diaphragm, the stiffness of the extension acts as a high-cut filter, and has the effect of cutting off unnecessary high frequencies.
本考案に係るドーム型スピーカーの振動系を第
1図〜第2図により詳述する。
The vibration system of the dome-shaped speaker according to the present invention will be explained in detail with reference to FIGS. 1 and 2.
ボイスコイルボビン2は従来と同一の材料で円
筒形に仕上げられ、下端部にボイスコイル3が捲
回される。 The voice coil bobbin 2 is finished in a cylindrical shape using the same material as the conventional one, and the voice coil 3 is wound around the lower end.
振動板1は金属、硬質賦形材を含浸させた紙、
布、もしくは高剛性充填剤で強化した合成樹脂
等、軽量で高剛性材料からなり、その直径はボイ
スコイルボピン2の直径より小直径となつてい
る。 The diaphragm 1 is made of metal, paper impregnated with a hard excipient,
It is made of a lightweight, highly rigid material such as cloth or synthetic resin reinforced with a highly rigid filler, and its diameter is smaller than that of the voice coil bopin 2.
エツジ4は金属、セラミツク、グラフアイト等
高剛性充填材で強化した合成樹脂等の硬質材料薄
膜5と、軟質合成樹脂、ゴム、布、粘弾性体含浸
布等、軟質材料シート6とがラミネートされた複
合材料で形成され、内周部から振動板1と同一曲
率で延長部41が一体に形成され、当該延長部4
1に、前記した振動板1が接着され、当該振動板
より外側の、前期エツジ4延長部41に、1箇所
以上、(図示例では4箇所)前記した硬質材料薄
膜5を部分的に除去して軟質材料シート6のみか
らなる柔軟部42を形成し、延長部41の剛性が
場所的に不均一となるようにする。 The edge 4 is laminated with a thin film 5 of a hard material such as a synthetic resin reinforced with a highly rigid filler such as metal, ceramic, or graphite, and a sheet 6 of a soft material such as a soft synthetic resin, rubber, cloth, cloth impregnated with a viscoelastic material, etc. An extension part 41 is integrally formed from the inner peripheral part with the same curvature as the diaphragm 1, and the extension part 4
1, the above-mentioned diaphragm 1 is adhered, and the above-mentioned hard material thin film 5 is partially removed from one or more places (four places in the illustrated example) on the front edge 4 extension part 41 outside the diaphragm. The flexible portion 42 is formed of only the soft material sheet 6, and the rigidity of the extension portion 41 is made non-uniform locally.
下端にボイスコイル3を捲回したボイスコイル
ボビン2が、エツジ4の下面に接着され、ボイス
コイル3からの駆動力はボイスコイルボビン2を
伝わり、前記エツジ4の延長部41を介して振動
板1の外周部に伝達される。 A voice coil bobbin 2 with a voice coil 3 wound around its lower end is adhered to the lower surface of the edge 4, and the driving force from the voice coil 3 is transmitted through the voice coil bobbin 2 and is applied to the diaphragm 1 via the extension 41 of the edge 4. transmitted to the outer periphery.
このエツジ4延長部41に設けられた柔軟部4
2の大きさは、振動板より外側の前記延長部の範
囲内に入る大きさであつて、径方向の寸法dは単
なる切目程度の最小限の隙間からエツジ内周部半
径の50%程度、幅Wはエツジ4内周部全周の3〜
50%程度、設ける箇数は1箇所以上(図示例にお
いては4箇所)6箇所程度が実験結果により良好
な結果を与える。 The flexible portion 4 provided in this edge 4 extension portion 41
The size of No. 2 is a size that falls within the range of the extension outside the diaphragm, and the radial dimension d ranges from a minimum gap of a mere cut to about 50% of the radius of the inner circumference of the edge. Width W is 3~3 of the entire inner circumference of edge 4
Approximately 50%, and the number of locations provided is one or more (four in the illustrated example) and approximately six provides better results according to experimental results.
更にエツジ4部の硬質材料薄膜5を部分的に、
又は全体を除去することによりエツジコンプライ
アンスを調節することも可能である。 Furthermore, the hard material thin film 5 on the edge 4 is partially coated.
Alternatively, it is also possible to adjust the edge compliance by removing the entire layer.
第4図に本考案によるドーム型スピーカーの周
波数特性を従来例と比較して示す。
FIG. 4 shows the frequency characteristics of the dome-shaped speaker according to the present invention in comparison with a conventional example.
実線は本考案ドーム型スピーカーの特性で、点
線は従来例の特性である。 The solid line shows the characteristics of the dome-shaped speaker of the present invention, and the dotted line shows the characteristics of the conventional example.
従来例は約20KHz〜30KHzにおいて共振や***振
に起因すると思われる大きなピークとデイツプが
存在するが、本考案においてはこれらのピークや
デイツプは分散されて消失し、周波数特性は平坦
となつていることから本考案に係る振動系の構成
が、ドーム型スピーカーの周波数特性を良好にす
るのに極めて有効であることが明らかである。In the conventional example, there are large peaks and dips at approximately 20KHz to 30KHz that are thought to be caused by resonance and anti-resonance, but in the present invention, these peaks and dips are dispersed and disappear, and the frequency characteristics are flat. Therefore, it is clear that the configuration of the vibration system according to the present invention is extremely effective in improving the frequency characteristics of a dome-shaped speaker.
また振動板主体が硬質材料でありソフトドーム
振動板と比較して軽量であるため、能率が低下す
ることもなく、従来例に見られない優れた周波数
特性と過渡特性を有するドーム型スピーカーを得
ることができるものである。 In addition, since the diaphragm is mainly made of hard material and is lighter than a soft dome diaphragm, there is no drop in efficiency, resulting in a dome-shaped speaker with excellent frequency characteristics and transient characteristics not seen in conventional speakers. It is something that can be done.
第1図および第2図は本考案ドーム型スピーカ
ーの振動系の正面図および半断面図、第3図は一
般的なドーム型スピーカーの断面図、第4図は周
波数特性図である。
1は振動板、2はボイスコイルボビン、3はボ
イスコイル、4はエツジ、41は延長部、42は
柔軟部である。
1 and 2 are a front view and a half-sectional view of the vibration system of the dome-shaped speaker of the present invention, FIG. 3 is a sectional view of a general dome-shaped speaker, and FIG. 4 is a frequency characteristic diagram. 1 is a diaphragm, 2 is a voice coil bobbin, 3 is a voice coil, 4 is an edge, 41 is an extension part, and 42 is a flexible part.
Claims (1)
および当該ボイスコイルボビン2に捲回されたボ
イスコイル3、前記ボイスコイルボビン2の上端
部に接着されたエツジ4とからなる振動系を有す
るドーム型スピーカーにおいて、前記エツジ4が
硬質材料薄膜5と軟質材料シート6とがラミネー
トされた複合材料からなり、前記エツジ4内周部
に振動板1と略同曲率の延長部41を形成し、当
該延長部41に1箇所以上、硬質材料薄膜5を部
分的に除去して軟質材料シート6のみからなる柔
軟部42を設け、ボイスコイル3より小径の振動
板1を前記延長部41内周辺に貼着した構成の振
動系を有することを特徴とするドーム型スピーカ
ー。 Dome-shaped diaphragm 1, voice coil bobbin 2,
and a dome-shaped speaker having a vibration system consisting of a voice coil 3 wound around the voice coil bobbin 2, and an edge 4 bonded to the upper end of the voice coil bobbin 2. The sheet 6 is made of a laminated composite material, and an extension 41 having approximately the same curvature as the diaphragm 1 is formed on the inner circumference of the edge 4, and the hard material thin film 5 is partially applied to the extension 41 at one or more locations. A dome-shaped vibration system having a vibration system configured such that a flexible portion 42 made of only a soft material sheet 6 is removed, and a diaphragm 1 having a smaller diameter than the voice coil 3 is attached to the inside and periphery of the extension portion 41. speaker.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12815184U JPS6142191U (en) | 1984-08-23 | 1984-08-23 | dome type speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12815184U JPS6142191U (en) | 1984-08-23 | 1984-08-23 | dome type speaker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6142191U JPS6142191U (en) | 1986-03-18 |
JPH0129913Y2 true JPH0129913Y2 (en) | 1989-09-12 |
Family
ID=30686781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12815184U Granted JPS6142191U (en) | 1984-08-23 | 1984-08-23 | dome type speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6142191U (en) |
-
1984
- 1984-08-23 JP JP12815184U patent/JPS6142191U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6142191U (en) | 1986-03-18 |
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