JPH0129911Y2 - - Google Patents
Info
- Publication number
- JPH0129911Y2 JPH0129911Y2 JP10663484U JP10663484U JPH0129911Y2 JP H0129911 Y2 JPH0129911 Y2 JP H0129911Y2 JP 10663484 U JP10663484 U JP 10663484U JP 10663484 U JP10663484 U JP 10663484U JP H0129911 Y2 JPH0129911 Y2 JP H0129911Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- voice coil
- dome
- coil bobbin
- soft
- 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 17
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229940006076 viscoelastic substance Drugs 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２図に示すご
とく、ヤグネツト２１、センターポール２２、フ
ロントプレート２３、およびバツクプレート２４
よりなる磁気回路のセンターポール２２とフロン
トプレート２３とで形成される磁気空隙に振動板
２５の外周に固着したボイスコイル２６が位置す
るごとくにエツジ２７により振動系を支持し、ボ
イスコイル２６に音声電流を通じて振動板２５を
駆動し音波を放射する。
A dome-shaped speaker generally has a Yagnet 21, a center pole 22, a front plate 23, and a back plate 24, as shown in FIG.
The vibration system is supported by the edges 27 so that the voice coil 26 fixed to the outer periphery of the diaphragm 25 is positioned in the magnetic gap formed by the center pole 22 and the front plate 23 of the magnetic circuit, and the voice coil 26 receives sound. The diaphragm 25 is driven through an electric current to emit sound waves.
振動板２５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にジユラルミンの
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 25 is usually made of a lightweight and highly rigid material such as duralumin in order to make the divided vibration frequency as high 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渡特性が劣化し、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 frequency characteristics and transient characteristics, which impairs 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
変換能力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 ability 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、振動板とボイスコ
イルボビンが布、もしくは不織布に硬、軟２種の
賦形材を場所別に含浸させた複合材料で一体成形
されており、その含浸状態が前記振動板とボイス
コイルボビンとの境界部において軟質の賦形材を
含浸させた軟質部を１箇所以上設け、残余の部分
には硬質の賦形材を含浸させて成形し、前記境界
部の剛性を場所的に変化せしめたものである。
In order to achieve the above object, the vibration system of the dome-shaped speaker according to the present invention has a diaphragm and a voice coil bobbin made of a composite material made of cloth or non-woven fabric impregnated with two types of excipient materials, one hard and one soft. It is integrally molded, and the impregnated state is such that one or more soft parts are impregnated with a soft excipient material at the boundary between the diaphragm and the voice coil bobbin, and the remaining parts are impregnated with a hard excipient material. The rigidity of the boundary portion is varied depending on the location.
上記構成を有する振動系においては、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
て平担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渡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。
In the vibration system having the above configuration, the stiffness at the outer periphery of the diaphragm differs along the circumferential direction, so significant anti-resonance and resonance in F R and F H as in the conventional example are dispersed and The resulting dips and peaks in the frequency characteristics disappear, resulting in flat frequency characteristics, and at the same time, significant resonance disappears, resulting in good transient characteristics.
The playback quality will be significantly improved.
第１図により本考案ドーム型スピーカーの振動
系の構成を詳述する。
The configuration of the vibration system of the dome-shaped speaker of the present invention will be explained in detail with reference to FIG.
１は振動板、２はボイスコイルボビンで、とも
に布、もしくは不織布に硬、軟２種の賦形材を所
定の部位に応じて別々に含浸させて一体成形した
複合材料よりなり、振動板１とボイスコイルボビ
ン２との境界に、軟質の賦形材を使用した軟質部
５を少くとも１箇所以上設け、残余の部分には硬
質の賦形材を使用することにより前記境界部の剛
性が場所的に変化する構成となつている。 1 is a diaphragm, and 2 is a voice coil bobbin, both of which are made of a composite material made by impregnating cloth or non-woven fabric with two types of excipients, hard and soft, depending on predetermined areas and molding them into one piece. By providing at least one soft portion 5 using a soft excipient material at the boundary with the voice coil bobbin 2, and using hard excipient material for the remaining portions, the rigidity of the boundary portion can be reduced depending on the location. The structure is changing.
ボイスコイル３は前記ボイスコイルボビン２に
捲回され、エツジ４はボイスコイルボビン２と振
動板１との境界近傍に接着される。 The voice coil 3 is wound around the voice coil bobbin 2, and the edge 4 is bonded near the boundary between the voice coil bobbin 2 and the diaphragm 1.
前記した軟質部５の大きさは、実験の結果によ
ると、幅Ｗは振動板全周長の３〜50％程度、径方
向の幅ｄは振動板半径の１〜50％程度、数量は１
箇所以上（図示例では４箇所）５箇所程度が良好
な結果を与える。 According to the results of experiments, the size of the soft portion 5 described above is such that the width W is about 3 to 50% of the total circumferential length of the diaphragm, the radial width d is about 1 to 50% of the radius of the diaphragm, and the quantity is 1.
Approximately 5 or more locations (4 locations in the illustrated example) give good results.
別の実施例として、前記した軟質部５において
軟質の賦形材を省略しても振動板１とボイスコイ
ルボビン２との境界の剛性が場所的に変化し、本
考案における作用効果を得ることができる。 As another embodiment, even if the soft excipient material is omitted in the above-mentioned soft portion 5, the rigidity of the boundary between the diaphragm 1 and the voice coil bobbin 2 changes depending on the location, and the effects of the present invention can be obtained. can.
振動板１およびボイスコイルボビン２を形成す
る複合材料の材質に関して、布、もしくは不織布
の材料として天燃繊維、もしくは合成繊維、或は
両者を混合した繊維等、材質は限定されない。 Regarding the material of the composite material forming the diaphragm 1 and the voice coil bobbin 2, the material is not limited, and the material of the cloth or nonwoven fabric may be natural fiber, synthetic fiber, or a mixture of both.
硬質の賦形材としてはエポキシ樹脂、ウレタン
樹脂、アクリル系樹脂、フエノール樹脂、等、ま
た軟質の賦形材としては、ゴム、シリコーン樹
脂、UVロス剤、等の粘弾性物質を使用すること
ができる。 As hard excipients, epoxy resins, urethane resins, acrylic resins, phenolic resins, etc. can be used, and as soft excipients, viscoelastic substances such as rubber, silicone resins, UV loss agents, etc. can be used. can.
第３図に本考案によるドーム型スピーカーと従
来例との周波数特性を比較して示す。
FIG. 3 shows a comparison of the frequency characteristics of the dome-shaped speaker according to the present invention and a conventional example.
実線は本考案のドーム型スピーカーで、点線は
従来例である。 The solid line is the dome-shaped speaker of the present invention, and the dotted line is the conventional example.
従来例スピーカーの特性にはほぼ20KHzに***
振によるデイツプと、30KHz付近に高域共振によ
るピークが見られるのに対し、本考案ドーム型ス
ピーカーにおいては上記周波数帯域において著し
いピークやデイツプが消失していることから、本
考案による振動系の構造が著しい共振や***振を
分散消失させるのに有効であることを示してい
る。 In the characteristics of conventional speakers, there is a dip due to anti-resonance at approximately 20KHz and a peak due to high-frequency resonance around 30KHz, whereas in the dome-shaped speaker of the present invention, significant peaks and dips disappear in the above frequency band. This shows that the structure of the vibration system according to the present invention is effective in dispersing and eliminating significant resonance and anti-resonance.
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
特性と過度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 a 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図は本考案ドーム型スピーカーの振動系の
一部切欠斜視図、第２図は従来一般のドーム型ス
ピーカーの断面図、第３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、５は軟質部である。
FIG. 1 is a partially cutaway perspective view of the vibration system of the dome-shaped speaker of the present invention, FIG. 2 is a sectional view of a conventional dome-shaped speaker, and FIG. 3 is a frequency characteristic diagram. 1 is a diaphragm, 2 is a voice coil bobbin, 3 is a voice coil, 4 is an edge, and 5 is a soft part.
Claims (1)
面に結合されたボイスコイルボビン２、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、前記振動板１とボイスコイルボビン
２との結合部近傍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、前記振動板１とボイスコイルボビン２とが
布もしくは不織布に硬、軟２種の賦形材をそれ
ぞれ場所別に含浸させた複合材料で一体成形さ
れ、前記賦形材の含浸状態が振動板１とボイス
コイルボビン２との境界部において軟質の賦形
材を使用した軟質部５を１箇所以上設け、残余
の部分は硬質賦形材を使用することにより前記
境界部の剛性を場所的に変化せしめた振動系を
有することを特徴とするドーム型スピーカー。 ２ 前記軟質部５の賦形材を省略したことを特徴
とする実用新案登録請求の範囲第１項記載のド
ーム型スピーカー。[Claims for Utility Model Registration] 1. A dome-shaped diaphragm 1, a voice coil bobbin 2 coupled to the lower outer circumference of the diaphragm 1, a voice coil 3 wound around the voice coil bobbin 2, and the diaphragm 1. In a dome-shaped speaker having a vibration system consisting of an edge 4 bonded near the joint with the voice coil bobbin 2, the diaphragm 1 and the voice coil bobbin 2 are made of cloth or nonwoven fabric coated with two types of excipient materials, hard and soft. A soft part 5 is provided at one or more locations at the boundary between the diaphragm 1 and the voice coil bobbin 2, which are integrally molded with a composite material impregnated at different locations, and where the impregnation state of the excipient material is soft at the boundary between the diaphragm 1 and the voice coil bobbin 2; A dome-shaped speaker characterized in that the remaining portion has a vibration system in which the rigidity of the boundary portion is varied locally by using a hard excipient material. 2. The dome-shaped speaker according to claim 1, wherein the excipient material of the soft portion 5 is omitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10663484U JPS6123796U (en) | 1984-07-13 | 1984-07-13 | dome type speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10663484U JPS6123796U (en) | 1984-07-13 | 1984-07-13 | dome type speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6123796U JPS6123796U (en) | 1986-02-12 |
| JPH0129911Y2 true JPH0129911Y2 (en) | 1989-09-12 |
Family
ID=30665914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10663484U Granted JPS6123796U (en) | 1984-07-13 | 1984-07-13 | dome type speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123796U (en) |
-
1984
- 1984-07-13 JP JP10663484U patent/JPS6123796U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123796U (en) | 1986-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100554818B1 (en) | Ultra low frequency transducer and loud speaker comprising same | |
| JPS587757Y2 (en) | Planar drive electric-acoustic mutual converter | |
| US2630189A (en) | Mounting of twin acoustic diaphragm assemblies | |
| JPH0537599Y2 (en) | ||
| JPH0129911Y2 (en) | ||
| JPH0438637Y2 (en) | ||
| JPH03795Y2 (en) | ||
| JPH0129912Y2 (en) | ||
| JPH03796Y2 (en) | ||
| JPH0129910Y2 (en) | ||
| JPH0416557Y2 (en) | ||
| JPH0448073Y2 (en) | ||
| JPH0811003Y2 (en) | Dome type speaker | |
| JPH0129909Y2 (en) | ||
| JPH0445349Y2 (en) | ||
| JPH0233440Y2 (en) | ||
| JPH0340000Y2 (en) | ||
| JPH0129913Y2 (en) | ||
| JPH028476Y2 (en) | ||
| JPS6035350Y2 (en) | Horizontal omnidirectional cone speaker | |
| JP3629777B2 (en) | Speaker | |
| JP3747576B2 (en) | Speaker | |
| JPS6153895A (en) | Speaker | |
| JPS6019419Y2 (en) | composite speaker | |
| JPH0129360B2 (en) |