JPH03795Y2 - - Google Patents
Info
- Publication number
- JPH03795Y2 JPH03795Y2 JP11327184U JP11327184U JPH03795Y2 JP H03795 Y2 JPH03795 Y2 JP H03795Y2 JP 11327184 U JP11327184 U JP 11327184U JP 11327184 U JP11327184 U JP 11327184U JP H03795 Y2 JPH03795 Y2 JP H03795Y2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- voice coil
- dome
- coil bobbin
- shaped
- 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 24
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 239000011343 solid material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 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
- 230000002542 deteriorative effect 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
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 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
- 230000003014 reinforcing effect Effects 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
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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、マグネツト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により振動板を支持し、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 magnet 21, a center pole 22, a front plate 23, and a back plate 24, as shown in FIG.
The edge 27 supports the diaphragm 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. 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
(R)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(H)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 phases of the diaphragm are opposite to each other outside and inside this vibration node, a dip occurs in the frequency characteristics at the anti-resonance frequency ( R ).
Furthermore, a peak occurred at the subsequent high resonance frequency ( H ), deteriorating the frequency characteristics and transient characteristics, and impairing 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
ーム型スピーカーは、ドーム型の振動板1、当該
ドーム型の振動板1の外周下面に結合されたボイ
スコイルボビン2、及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、並びに前記振動
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とから成る振動系を有し、前記
ボイスコイルボビン2が布又は不織布を基材と
し、当該基材のボイスコイル3上端部と振動板1
下面との間に該当する部分に少なくとも1箇所以
上、軟質の賦形材を含浸させて成形するか若しく
は賦形材を省略して柔軟とした柔軟部5が形成さ
れると共に、当該柔軟部5以外の部分は硬質の賦
形材を含浸させて成形した堅固な構造とすること
によつて、ボイスコイルボビン2の周方向の剛性
が不均一とならしめた構成を有する。
In order to achieve the above object, the dome-shaped speaker according to the present invention includes a dome-shaped diaphragm 1, a voice coil bobbin 2 coupled to the lower outer circumference of the dome-shaped diaphragm 1, and a voice coil bobbin 2 wound around the voice coil bobbin 2. It has a vibration system consisting of a rotated voice coil 3 and an edge 4 bonded near the joint between the diaphragm 1 and the voice coil bobbin 2, and the voice coil bobbin 2 is made of cloth or nonwoven fabric as a base material, and The upper end of the voice coil 3 and the diaphragm 1 of the base material
At least one flexible part 5 is formed between the lower surface and the corresponding part by impregnating and molding a soft excipient material or by omitting the excipient material, and the flexible part 5 The rest of the voice coil bobbin 2 has a structure in which the rigidity in the circumferential direction of the voice coil bobbin 2 is made non-uniform by impregnating it with a hard excipient material and forming a solid structure.
上記構成を有する振動系においては、ボイスコ
イルボビンの前記柔軟部は剛性が小さく、振動板
に対して補強作用が十分でなく、従つて、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
異なり、更に、振動板への駆動力の伝播も部分的
に不均一となるので、前記従来例の如きRやH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 flexible portion of the voice coil bobbin has low rigidity and does not have a sufficient reinforcing effect on the diaphragm. Furthermore, since the propagation of the driving force to the diaphragm becomes partially uneven, the significant anti-resonance and resonance in R and H as in the conventional example are dispersed, and the resulting frequency characteristics are The dips and peaks of the sound disappear, resulting in a flat frequency characteristic, and at the same time, the significant resonance disappears, resulting in better transient characteristics, resulting in a marked improvement in the reproduced sound quality.
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は振動板で、金属、或は強化された合成樹脂
等軽量、高剛性材料からなり、2はボイスコイル
ボビンで、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、ボイスコイル3捲回
部より上部に一部分軟質の賦形材を使用するか、
又は賦形材を省略することにより、剛性を少さく
した柔軟部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
ボイスコイルボビン2上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 made of a lightweight, highly rigid material such as metal or reinforced synthetic resin; 2 is a voice coil bobbin, which is made of cloth or non-woven fabric with two types of excipients, hard and soft, depending on the predetermined parts; It is made of a composite material that is separately impregnated and integrally molded, and a soft excipient is used in a part above the voice coil 3 winding part, or
Alternatively, the rigidity of the upper part of the voice coil bobbin 2 can be reduced by omitting the shaping material, providing at least one flexible part 5 with reduced rigidity, and using a hard shaping material for the remaining parts. The structure changes over time.
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、上下
方向の幅dは単なるスリツト程度から、ボイスコ
イル捲回部を除く全域以内、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 above-mentioned soft part 5 is that the width W is about 3 to 50% of the total circumference of the diaphragm, and the vertical width d ranges from a simple slit to the entire area excluding the voice coil winding part. Within the range of 1 or more (4 locations in the illustrated example) or about 5 locations, good results are obtained.
他の実施例として、振動板1とボイスコイルボ
ビン2とを同一材料で一体成形してもよい。但し
この場合に振動板1の部位は硬質の賦形材を含浸
させて堅固な構造の振動板とする。 As another embodiment, the diaphragm 1 and the voice coil bobbin 2 may be integrally molded from the same material. However, in this case, the portion of the diaphragm 1 is impregnated with a hard excipient material to provide a diaphragm with a solid structure.
振動板1を別部材とするよりは製造工数を少く
し製造原価を低くし得る特徴を有する。 Compared to using the diaphragm 1 as a separate member, it has the advantage of reducing the number of manufacturing steps and lowering the manufacturing cost.
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
の材料として天然繊維、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
一部切欠き斜視図、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は柔軟部である。
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 flexible portion.
Claims (1)
振動板1の外周下面に結合されたボイスコイル
ボビン2、及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、並びに前記振動板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とから成る振動系を有するドー
ム型スピーカーにおいて、前記ボイスコイルボ
ビン2が布又は不織布を基材とし、当該基材の
ボイスコイル3上端部と振動板1下面との間に
該当する部分に少なくとも1箇所以上、軟質の
賦形材を含浸させて成形するか若しくは賦形材
を省略した柔軟部5が形成されると共に当該柔
軟部5以外の部分は硬質の賦形材を含浸させて
成形した堅固な材質となつていることを特徴と
するドーム型スピーカー。 2 前記ボイスコイルボビン2と前記振動板1と
が同一の材料で、且つ振動板1の部位は硬質の
賦形材のみを含浸させて一体成形されてなるこ
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 hard diaphragm 1, a voice coil bobbin 2 coupled to the lower outer periphery of the dome-shaped diaphragm 1, and a voice coil 3 wound around the voice coil bobbin 2. and the diaphragm 1
In the dome-shaped speaker, the voice coil bobbin 2 has a base material made of cloth or nonwoven fabric, and the voice coil bobbin 2 has an upper end portion of the voice coil 3 of the base material. At least one flexible part 5 is formed between the lower surface of the diaphragm 1 and the corresponding part by impregnating and molding a soft excipient material, or by omitting the excipient material, and at least one part other than the flexible part 5 is formed. A dome-shaped speaker characterized by its parts being made of a solid material impregnated with a hard excipient material and molded. 2. Claims for registration of a utility model characterized in that the voice coil bobbin 2 and the diaphragm 1 are made of the same material, and the diaphragm 1 is integrally formed by impregnating only a hard excipient material. The dome-shaped speaker described in item 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11327184U JPS6129593U (en) | 1984-07-24 | 1984-07-24 | dome type speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11327184U JPS6129593U (en) | 1984-07-24 | 1984-07-24 | dome type speaker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6129593U JPS6129593U (en) | 1986-02-22 |
JPH03795Y2 true JPH03795Y2 (en) | 1991-01-11 |
Family
ID=30672307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11327184U Granted JPS6129593U (en) | 1984-07-24 | 1984-07-24 | dome type speaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6129593U (en) |
-
1984
- 1984-07-24 JP JP11327184U patent/JPS6129593U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6129593U (en) | 1986-02-22 |
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