JPH11262080A - Loudspeaker - Google Patents
LoudspeakerInfo
- Publication number
- JPH11262080A JPH11262080A JP6086598A JP6086598A JPH11262080A JP H11262080 A JPH11262080 A JP H11262080A JP 6086598 A JP6086598 A JP 6086598A JP 6086598 A JP6086598 A JP 6086598A JP H11262080 A JPH11262080 A JP H11262080A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- voice coil
- frequency
- joint
- speaker
- 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.)
- Pending
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は各種音響機器に使用
されるスピーカに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used for various kinds of audio equipment.
【0002】[0002]
【従来の技術】従来のスピーカについて図3の半断面図
により説明する。2. Description of the Related Art A conventional speaker will be described with reference to a half sectional view of FIG.
【0003】同図によると、1はポールピース付き下部
プレートであり、上部プレート2との間にマグネット3
を配し、上記ポールピース付き下部プレート1のポール
ピースと上記上部プレート2の間には均一な隙間の磁気
ギャップ4が設けられている。According to FIG. 1, reference numeral 1 denotes a lower plate with a pole piece, and a magnet 3
A magnetic gap 4 having a uniform gap is provided between the pole piece of the lower plate 1 with the pole piece and the upper plate 2.
【0004】上部プレート2にはフレーム5を接合し、
そのフレーム5にはダンパー6、振動板7を接合し、こ
れらの部品は、ボイスコイル8と接合されてボイスコイ
ル8の線輪9が磁気ギャップ4に触れないように支持し
ている。A frame 5 is joined to the upper plate 2,
A damper 6 and a diaphragm 7 are joined to the frame 5, and these parts are joined to the voice coil 8 to support the wire 9 of the voice coil 8 so as not to touch the magnetic gap 4.
【0005】なお、上記振動板7の中心付近には、磁気
ギャップ4へのゴミの侵入を防ぐダストキャップ10が
設けられている。A dust cap 10 for preventing dust from entering the magnetic gap 4 is provided near the center of the diaphragm 7.
【0006】次にこのスピーカの動作であるが、ボイス
コイル8の線輪9に電気信号が入力されると、ボイスコ
イル8は磁気ギャップ4から力を受けて動き、この力は
ボイスコイル8に接合された振動板7を動かし、振動板
7はスピーカの前面に音を発生する。Next, the operation of this speaker is as follows. When an electric signal is input to the wire 9 of the voice coil 8, the voice coil 8 moves by receiving a force from the magnetic gap 4, and this force is applied to the voice coil 8. The joined diaphragm 7 is moved, and the diaphragm 7 generates sound on the front of the speaker.
【0007】ここで、振動板7は、図4に示すようにボ
イスコイル8との接合部から外周のエッジ貼り合わせ部
に至る形状が単一半径(R)もしくは、複数(合成)の
合成半径(R)からなる曲面形状となっている。Here, as shown in FIG. 4, the diaphragm 7 has a single radius (R) or a plurality (composite) of composite radii from the joint with the voice coil 8 to the outer edge bonding portion. (R).
【0008】[0008]
【発明が解決しようとする課題】しかしながら、スピー
カの周波数特性をワイドレンジ化するための高域の伸び
向上には振動板7の中心部の頂角Aを図4に示すように
小さくするのが望ましく、且つ低域の応答性を良くし中
域の周波数特性の乱れ等を緩和するには、振動板7の形
状的な剛性の強さと適度な柔軟性が必要でありそのため
には一つの尺度として振動板7の外周部のエッジ貼り合
わせ部のエッジとの接触角Bを大きくするのが望まし
い。However, in order to improve the elongation in the high frequency range for widening the frequency characteristics of the loudspeaker, it is necessary to reduce the apex angle A at the center of the diaphragm 7 as shown in FIG. Desirably, in order to improve the responsiveness in the low frequency range and mitigate the disturbance of the frequency characteristics in the middle frequency range, the diaphragm 7 needs to have a high degree of rigidity in terms of shape and moderate flexibility. It is desirable to increase the contact angle B between the outer peripheral portion of the diaphragm 7 and the edge of the edge bonding portion.
【0009】しかしながら曲面形状が図4のように単一
Rで構成されていると、ボイスコイル8との接合部の頂
角Aを小さくし、且つ外周のエッジ貼り合わせ部との接
触角Bを大きくするような両立させる形状にはできず、
ワイドレンジな再生を行うスピーカ用振動板には適して
いない。そこで、曲面形状を図5に示す合成R形状にす
ることによってボイスコイル8との接合部の頂角Aaを
小さくし、外周のエッジ貼り合わせ部との接触角Bbを
大きくするような形状を実現することができるが、Ra
とRbの接点が変(屈)曲点となり振動板7の強度が弱
くなり、図6の周波数特性図で示すように共振が起こり
易く中域から中高域にかけて周波数特性の乱れ(ピーク
・ディップ)が発生し易くなるという課題を有するもの
であった。However, when the curved surface is formed as a single R as shown in FIG. 4, the apex angle A of the joint with the voice coil 8 is reduced, and the contact angle B with the outer edge bonding portion is reduced. It is not possible to make the shape compatible with making it larger,
It is not suitable for speaker diaphragms that perform wide-range reproduction. Therefore, by forming the curved surface shape into a composite R shape shown in FIG. 5, a shape is realized in which the apex angle Aa of the joint portion with the voice coil 8 is reduced and the contact angle Bb with the outer edge bonding portion is increased. Can be
The contact point between Rb and Rb becomes an inflection point, and the strength of the diaphragm 7 becomes weak, and resonance easily occurs as shown in the frequency characteristic diagram of FIG. Has a problem that it is likely to occur.
【0010】本発明は上記課題を解決するもので、ボイ
スコイルとの接合部の頂角を小さくし、振動板の外周の
エッジ貼り合わせ部の接触角を大きくするような形状を
実現しつつ、低域の応答性を向上させ中域から中高域の
周波数特性の乱れ(ピーク・ディップ)量を低減し、か
つ高域再生周波数帯域を向上した音質の優れたスピーカ
を提供するものである。The present invention solves the above-mentioned problems, and realizes a shape in which the apex angle of the joint portion with the voice coil is reduced and the contact angle of the edge bonding portion on the outer periphery of the diaphragm is increased. An object of the present invention is to provide a speaker with excellent sound quality, which has improved low-frequency response, reduced disturbance (peak dip) in frequency characteristics in the middle to middle and high ranges, and improved a high-frequency reproduction frequency band.
【0011】[0011]
【課題を解決するための手段】上記課題を解決するため
に、本発明のスピーカは、少なくともボイスコイルとの
接合部から外周のエッジ貼り合わせ部に至る曲面の形状
を複数の半径を有すると共に、この半径の交差部分が変
曲点とならないように形成された振動板を用いたもので
あり、複数の半径を有する曲面形状でありながら、変曲
点を有さないものとしてボイスコイルとの接合部の頂角
を小さくし、外周のエッジ貼り合わせ部の接触角を大き
くする形状を実現して、低域の応答性を向上させ中域か
ら中高域の周波数特性の乱れ(ピーク・ディップ)量を
低減し、かつ高域再生周波数帯域を向上した音質の優れ
たスピーカを提供できるものである。In order to solve the above-mentioned problems, a speaker according to the present invention has a curved surface shape having at least a plurality of radii from a joint portion with a voice coil to an outer edge bonding portion. It uses a diaphragm formed so that the intersection of the radii does not become an inflection point, and joins with a voice coil as having no inflection point while having a curved surface shape with multiple radii. Realizes a shape that reduces the apex angle of the part and increases the contact angle of the outer edge bonding part, improves the response in the low frequency range, and disturbs the frequency characteristics (peak dip) in the mid-range to mid-high range. It is possible to provide a loudspeaker having excellent sound quality in which the frequency is reduced and the high-frequency reproduction frequency band is improved.
【0012】[0012]
【発明の実施の形態】本発明の請求項1に記載の発明
は、少なくともボイスコイルとの接合部から外周のエッ
ジ貼り合わせ部に至る曲面の形状を複数の半径を有する
と共に、この半径の交差部分が変曲点とならないように
形成された振動板を用いたものであり、振動板の曲面を
複数の半径を有する曲面形状でありながら変曲点を有さ
ないものとしてボイスコイルとの接合部の頂角を小さく
し、外周のエッジ貼り合わせ部の接触角を大きくする形
状を実現したので、共振分散による歪みを低減し、かつ
高域再生周波数帯域を向上した音質の優れたスピーカを
提供するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, at least a curved surface shape from a joint portion with a voice coil to an outer edge bonding portion has a plurality of radii, and an intersection of the radii. Using a diaphragm formed so that the part does not become an inflection point, and joining the voice coil with the curved surface of the diaphragm as a curved surface shape having multiple radii but having no inflection point Provides a speaker with excellent sound quality that reduces the apex angle of the part and increases the contact angle of the outer edge bonding part, thereby reducing distortion due to resonance dispersion and improving the high frequency reproduction frequency band. Is what you do.
【0013】本発明の請求項2に記載の発明は、請求項
1のスピーカの振動板曲面を長円の一部で形成したもの
であり、共振分散による歪みを低減し、かつ高域再生周
波数帯域の向上に適した振動板を容易に提供でき優れた
スピーカを実現できるものである。According to a second aspect of the present invention, the curved surface of the diaphragm of the loudspeaker according to the first aspect is formed by a part of an ellipse, the distortion due to resonance dispersion is reduced, and the high frequency reproduction frequency is reduced. It is possible to easily provide a diaphragm suitable for improving the band and to realize an excellent speaker.
【0014】以下、本発明のスピーカの一実施の形態を
図1(a),(b)、図2により説明する。なお、スピ
ーカの構成そのものは、従来技術と同様であるため、説
明を省略して説明する。An embodiment of the speaker according to the present invention will be described below with reference to FIGS. 1 (a), 1 (b) and 2. Note that the configuration of the speaker itself is the same as that of the related art, and thus the description will be omitted.
【0015】図1(a)は本発明のスピーカの一実施の
形態の要部である振動板の半断面図を示すものであり、
図1(b)はこの振動板とエッジおよびボイスコイルと
の関係を説明するための半断面図である。FIG. 1A is a half sectional view of a diaphragm which is a main part of an embodiment of a speaker according to the present invention.
FIG. 1B is a half sectional view for explaining the relationship between the diaphragm, the edge and the voice coil.
【0016】同図によると7aは振動板であり、11は
エッジ貼り合わせ部を介して振動板7aの外周に結合さ
れたエッジである。この振動板7aは曲面形状が、長径
と短径からなる正楕円形状の一部で形成されており、変
(屈)曲点を有さない滑らかな形状となっている。According to FIG. 1, reference numeral 7a denotes a diaphragm, and 11 denotes an edge connected to the outer periphery of the diaphragm 7a via an edge bonding portion. The diaphragm 7a has a curved surface formed by a part of a regular elliptical shape having a major axis and a minor axis, and has a smooth shape having no inflection (flexion) curve point.
【0017】次に上記実施の形態1のより具体的なスピ
ーカと比較例との比較結果を(表1)に示す。Next, the comparison results between the more specific speaker of the first embodiment and a comparative example are shown in (Table 1).
【0018】なお、比較例Aは図4の振動板形状を有す
る振動板を用いたスピーカのものであり、比較例Bは図
5の振動板形状を有する振動板を用いたスピーカのもの
である。Comparative Example A is for a speaker using the diaphragm having the diaphragm shape shown in FIG. 4, and Comparative Example B is for a speaker using the diaphragm having the diaphragm shape shown in FIG. .
【0019】[0019]
【表1】 [Table 1]
【0020】(表1)から明らかなように本実施の形態
のスピーカは比較例A,Bより中高域を中心に周波数特
性の乱れが減少し、高域再生周波数帯域が向上している
ことが確認された。As is clear from Table 1, the loudspeaker according to the present embodiment has less frequency characteristic disturbance centered on the middle and high frequencies than the comparative examples A and B, and the high frequency reproduction frequency band is improved. confirmed.
【0021】なお、図2は本実施の形態の周波数音圧特
性図である。また、上記実施の形態1においては正楕円
で振動板の曲面形状を形成したが、ボイスコイルとの接
合部の頂角AAを小さくし、外周のエッジ貼り合わせ部
の接触角BBを大きくするものであり、且つ変曲点を有
するものであれば長円に属するものから適宜選択すれば
良いものである。FIG. 2 is a frequency sound pressure characteristic diagram of the present embodiment. Further, in the first embodiment, the curved shape of the diaphragm is formed as a regular ellipse, but the vertex angle AA at the joint with the voice coil is reduced and the contact angle BB at the outer edge bonding portion is increased. If it has an inflection point, it may be appropriately selected from those belonging to an ellipse.
【0022】[0022]
【発明の効果】以上のように、本発明のスピーカは、ボ
イスコイルとの接合部から外周のエッジ貼り合わせ部に
至る曲面形状が長円の一部からなる振動板を用いるもの
であり、変曲点をもたずにボイスコイルとの接合部の頂
角を小さくし、外周のエッジ貼り合わせ部の接触角を大
きくするような形状を実現して、共振分散により周波数
特性の乱れを低減し、かつ高域再生周波数帯域を向上し
た音質の優れたスピーカを提供するものである。As described above, the loudspeaker of the present invention employs a diaphragm having a curved surface shape that is a part of an ellipse from the joint with the voice coil to the outer edge bonding portion. Reduces the apex angle of the joint with the voice coil without having a bend, and realizes a shape that increases the contact angle of the outer edge bonding part, reducing disturbance of frequency characteristics due to resonance dispersion. Another object of the present invention is to provide a loudspeaker having an excellent sound quality with an improved high-frequency reproduction frequency band.
【図1】(a)本発明のスピーカの一実施の形態の要部
である振動板の半断面図 (b)同ボイスコイルおよびエッジとの関係を説明する
半断面図FIG. 1A is a half sectional view of a diaphragm which is a main part of an embodiment of the speaker of the present invention. FIG.
【図2】同音圧−周波数特性図FIG. 2 is the same sound pressure-frequency characteristic diagram
【図3】従来のスピーカの半断面図FIG. 3 is a half sectional view of a conventional speaker.
【図4】同要部である振動板部分の側断面図FIG. 4 is a side sectional view of a diaphragm portion which is a main part of the same.
【図5】他の従来のスピーカの要部である振動板部分の
側断面図FIG. 5 is a side sectional view of a diaphragm portion which is a main part of another conventional speaker.
【図6】従来のスピーカの周波数音圧特性図FIG. 6 is a diagram showing a frequency sound pressure characteristic of a conventional speaker.
7a 振動板 8 ボイスコイル AA 振動板の中心部頂角(ボイスコイルとの接合部頂
角) BB 振動板の外周部接触角(エッジ貼り合わせ部の接
触角)7a diaphragm 8 voice coil AA vertex angle at center of diaphragm (vertical angle at joint with voice coil) BB outer peripheral contact angle of diaphragm (contact angle at edge bonded portion)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 信夫 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Nobuo Nakamura, Inventor No. 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (2)
外周のエッジ貼り合わせ部に至る曲面の形状を複数の半
径を有すると共に、この半径の交差部分が変曲点となら
ないように形成された振動板を用いたスピーカ。1. A diaphragm having at least a plurality of radii in a curved surface from a joint with a voice coil to an outer edge bonding portion, and formed so that an intersection of the radii does not become an inflection point. Speaker using.
用いた請求項1記載のスピーカ。2. The loudspeaker according to claim 1, wherein a diaphragm whose curved surface is a part of an ellipse is used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6086598A JPH11262080A (en) | 1998-03-12 | 1998-03-12 | Loudspeaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6086598A JPH11262080A (en) | 1998-03-12 | 1998-03-12 | Loudspeaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11262080A true JPH11262080A (en) | 1999-09-24 |
Family
ID=13154721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6086598A Pending JPH11262080A (en) | 1998-03-12 | 1998-03-12 | Loudspeaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11262080A (en) |
-
1998
- 1998-03-12 JP JP6086598A patent/JPH11262080A/en active Pending
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