JPH0224314Y2 - - Google Patents
Info
- Publication number
- JPH0224314Y2 JPH0224314Y2 JP1643284U JP1643284U JPH0224314Y2 JP H0224314 Y2 JPH0224314 Y2 JP H0224314Y2 JP 1643284 U JP1643284 U JP 1643284U JP 1643284 U JP1643284 U JP 1643284U JP H0224314 Y2 JPH0224314 Y2 JP H0224314Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil bobbin
- drive cone
- diaphragm
- central portion
- electrodynamic 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.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 230000005520 electrodynamics Effects 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は平板状振動板を二点駆動することによ
り第１次および第２次共振を極力抑制して一点駆
動の場合に比べて周波数特性のピークデイツプを
少なくしたもので、その二点駆動を単一のドライ
ブコーン（サブコーン）により達成するように構
成したもの、詳しくは平板状振動板の下面で板周
辺部と板中央部との二点に、単一ドライブコーン
で同一方向に突出する周辺部分および中央部分を
接着するとともに、このドライブコーンの中央部
下面にコイルボビンの上端を接着してなる動電型
スピーカに関する。[Detailed description of the invention] This invention suppresses the primary and secondary resonances as much as possible by driving the flat diaphragm at two points, thereby reducing the peak dip of the frequency characteristics compared to the case of driving at one point. , a configuration in which the two-point drive is achieved by a single drive cone (sub-cone). Specifically, a single drive cone is installed at two points on the bottom surface of the flat diaphragm, at the periphery of the plate and at the center of the plate. The present invention relates to an electrodynamic speaker in which a peripheral portion and a central portion protruding in the same direction are bonded together, and the upper end of a coil bobbin is bonded to the lower surface of the center of the drive cone.
上記の如く単一のドライブコーンを用いて振動
板を二点駆動するように構成したものでは、各別
の二つのドライブコーンを用いて二点駆動するよ
うに構成するものに比べて、中央駆動部の構造が
簡単で組立作業、特にドライブコーンとコイルボ
ビンとの接着を容易に行ない易いといつた製作組
立上の利点を有するが、このような単一ドライブ
コーンによる二点駆動方式で従来から知られてい
るものに、実開昭56−147696号公報で開示されて
いるような構造のものがある。その代表的なもの
について簡単に説明すると、第５図イ又はロで示
したように、断面Ｖ字状の単一の環状ドライブコ
ーン０２の上端夫々を振動板０１の下面に接着す
るとともに、このドライブコーン０２の下端部の
外周面又は内周面にコイルボビン０３の上端を接
着したもの或いは第６図イ又はロで示したよう
に、前記ドライブコーン０２の下端部に円筒部０
２′を一体形成し、この円筒部０２′に前記コイル
ボビン０３の上端を内嵌又は外嵌させて接着した
ものである。 As described above, when the diaphragm is configured to be driven at two points using a single drive cone, compared to the configuration where the diaphragm is driven at two points using two separate drive cones, It has advantages in terms of production and assembly, such as the simple structure of the part and ease of assembly, especially the adhesion of the drive cone and coil bobbin. One of the structures disclosed in Japanese Utility Model Application Publication No. 147696/1983 is disclosed. To briefly explain a typical example, as shown in FIG. The upper end of the coil bobbin 03 is glued to the outer or inner peripheral surface of the lower end of the drive cone 02, or the cylindrical part 0 is attached to the lower end of the drive cone 02, as shown in FIG.
2' is integrally formed, and the upper end of the coil bobbin 03 is fitted internally or externally into this cylindrical part 02' and bonded.
然し乍ら、上記構成の従来例においては、第５
図のもの、或いは第６図のものの何れにしてもド
ライブコーンとコイルボビンとの接着時に両者を
同芯状態に仮止め保持することが困難でボビンが
振動板に対し傾き姿勢で接着されてしまつて、ギ
ヤツプズレ等多くの製品不良を発生する可能性が
高く、しかも接着後においてコイルボビンの駆動
力が、コイルボビン軸芯に沿つた又はそれに対し
て傾斜した接着面を介して間接的に又は分力とし
てドライブコーンに伝達されるので、エネルギー
減衰率の面で不利であつた。 However, in the conventional example with the above configuration, the fifth
In either case of the one shown in the figure or the one shown in Fig. 6, it is difficult to temporarily hold the drive cone and coil bobbin in a concentric state when gluing them together, and the bobbin ends up being glued in an inclined position with respect to the diaphragm. , there is a high possibility that many product defects such as gear misalignment will occur, and furthermore, after bonding, the driving force of the coil bobbin is driven indirectly or as a component force through the bonding surface along the coil bobbin axis or inclined with respect to it. Since the energy is transmitted to the cone, it is disadvantageous in terms of energy attenuation rate.
本考案はかかる実情に鑑み、ドライブコーンの
極く簡単な改良をもつて、ドライブコーンとコイ
ルボビンとの同芯接着を確実、容易に行なえ、し
かも、駆動力伝達をロスなく行なえて振動特性の
著しい向上が図れる動電型スピーカを提供する点
に目的を有する。 In view of the above circumstances, the present invention has been proposed to make a very simple improvement of the drive cone, to reliably and easily concentrically bond the drive cone and coil bobbin, and to transmit driving force without loss, resulting in remarkable vibration characteristics. The purpose is to provide an electrodynamic speaker that can be improved.
上記の目的達成のために本考案に係る動電型ス
ピーカは、前記単一ドライブコーンの突出中央部
分の基端部に、前記コイルボビンと同芯又はほぼ
同芯の円筒周壁部と前記コイルボビンの軸芯に対
して垂直でそのコイルボビン上端縁が接当する突
当で周壁部とからなる段部を一体形成してあると
いう構成に特徴を有するものであり、これによつ
て次のような作用効果が得られるに至つたのであ
る。 In order to achieve the above object, the electrodynamic speaker according to the present invention includes a cylindrical peripheral wall portion concentric or substantially concentric with the coil bobbin and an axis of the coil bobbin at the base end of the protruding central portion of the single drive cone. It is characterized by a structure in which a stepped part is integrally formed with the surrounding wall part and an abutment perpendicular to the core and against which the upper edge of the coil bobbin comes into contact, and this provides the following effects. was finally obtained.
つまり、前記単一ドライブコーンとコイルボビ
ンとを接着するにあたつて、ドライブコーンをそ
の突出中央部分の基端部に形成の前記段部が上向
きに姿勢するように水平面上に載置した状態で前
記段部内にコイルボビンの上端部をその上端縁が
前記突当て周壁部に接当するまで嵌入載置するだ
けで、コイルボビンをその軸芯が振動板に対して
確実に垂直な姿勢に保たれた状態でドライブコー
ン上に安定自立させることができる。そして、こ
のような安定自立姿勢に保たれたコイルボビンの
上端部周縁と前記段部の円筒周壁部との間に接着
剤を介在させることでコイルボビンとドライブコ
ーンとを一次元面内での相対移動のみによつて同
芯に接着することができる。換言すると、前記段
部の形成により、ドライブコーンとコイルボビン
との組立及び同芯接着を確実、容易に行なえ、生
産性向上並びに歩留りの改善が図れる。しかも、
組立接着状態ではコイルボビン駆動力が突当て面
を介してドライブコーンにダイレクトに伝達さ
れ、エネルギーの減衰を極力抑制できるので、既
述の従来例に比べて振動特性の向上が図り得る。
その上、本考案のドライブコーンにおいては、そ
の形状から鑑みて、抄造方法による成形が可能で
あり、あるいはまた、シートを用いてのプレス加
工といつた量産体制の製作も可能であり、コスト
面でも有利な結果が得られるに至つたのである。 That is, when bonding the single drive cone and the coil bobbin, the drive cone is placed on a horizontal surface with the step formed at the proximal end of the protruding central portion facing upward. By simply inserting and placing the upper end of the coil bobbin into the stepped portion until its upper edge abuts the abutting peripheral wall portion, the coil bobbin can be reliably maintained in an attitude in which its axis is perpendicular to the diaphragm. It can stand stably on its own on the drive cone. Then, by interposing an adhesive between the periphery of the upper end of the coil bobbin maintained in such a stable self-supporting position and the cylindrical peripheral wall of the stepped portion, the coil bobbin and the drive cone can be moved relative to each other within a one-dimensional plane. Can be glued concentrically using a chisel. In other words, by forming the stepped portion, the drive cone and the coil bobbin can be reliably and easily assembled and concentrically bonded, and productivity and yield can be improved. Moreover,
In the assembled and bonded state, the coil bobbin driving force is directly transmitted to the drive cone via the abutment surface, and energy attenuation can be suppressed as much as possible, so vibration characteristics can be improved compared to the conventional example described above.
Furthermore, considering the shape of the drive cone of the present invention, it is possible to form it by a papermaking method, or it can also be manufactured in a mass production system such as press processing using sheets, which is cost effective. However, favorable results were obtained.
以下本考案の一実施例を図面に基づいて詳述す
る。 An embodiment of the present invention will be described in detail below with reference to the drawings.
第１図及び第２図において、４はセンターポー
ル５が一体形成されたヨーク、６はヨーク４の上
面に固定された環状マグネツト、７は前記マグネ
ツト６の上面に固定された環状プレートであり、
この環状プレート７の孔内周面と前記センターポ
ール５の外周面との間に環状の磁気ギヤツプ８が
形成される。９はプレート７に固定されたフレー
ム、１は平面視小判形で平板状の振動板であり、
この振動板１は小判形環状のエツジ部材１０を介
して前記フレーム９に支持されている。２がドラ
イブコーンであり、このドライブコーン２は第３
図で示したように、全体が平面視においてほぼ小
判形でその周辺部分２Ａおよび中央部分２Ｂが同
一方向に同一高さ突出形成されており、その突出
周辺部分２Ａおよび中央部分２Ｂが前記振動板１
下面の周辺部及び中央部でこの振動板１の第二次
共振により生じる二つの節円部に接着されてい
る。３はボイスコイル１１が巻回されたコイルボ
ビンであり、このコイルボビン３は、ボイスコイ
ル１１が前記磁気ギヤツプ８に配置される状態で
その上下中間部がダンパー１２を介してフレーム
９に支持され、かつその上端がドライブコーン２
の中央部下面に接着されている。 In FIGS. 1 and 2, 4 is a yoke on which a center pole 5 is integrally formed, 6 is an annular magnet fixed to the upper surface of the yoke 4, and 7 is an annular plate fixed to the upper surface of the magnet 6.
An annular magnetic gap 8 is formed between the inner peripheral surface of the hole of the annular plate 7 and the outer peripheral surface of the center pole 5. 9 is a frame fixed to the plate 7; 1 is a flat diaphragm that is oval in plan view;
The diaphragm 1 is supported by the frame 9 via an oval annular edge member 10. 2 is a drive cone, and this drive cone 2 is the third drive cone.
As shown in the figure, the whole has a substantially oval shape in plan view, and its peripheral portion 2A and central portion 2B are formed to protrude in the same direction and at the same height, and the protruding peripheral portion 2A and central portion 2B are the same as the diaphragm plate. 1
The diaphragm 1 is bonded to two nodal parts generated by the second resonance of the diaphragm 1 at the periphery and center of the lower surface. 3 is a coil bobbin around which a voice coil 11 is wound; this coil bobbin 3 is supported by a frame 9 at its upper and lower middle portions via a damper 12 with the voice coil 11 disposed in the magnetic gap 8; The upper end is drive cone 2
It is glued to the bottom of the center.
上記構成の動電型スピーカにおいて前記ドライ
ブコーン２の前記コイルボビン３上端の取付部構
造は次のように構成されている。 In the electrodynamic speaker configured as described above, the structure of the mounting portion of the drive cone 2 at the upper end of the coil bobbin 3 is configured as follows.
第４図で明示の如く、前記ドライブコーン２の
突出中央部分２Ｂの基端部に、前記コイルボビン
３と同芯で下方ほどやや大径の円筒周壁部２C1
と前記コイルボビン３の軸芯に対して垂直でその
コイルボビン３上端縁が接当する突当で周壁部２
C2とからなる段部２Ｃを一体形成したものであ
り、この段部２Ｃ内に挿入したコイルボビン３の
上端縁３ａを前記突当て周壁部２c2に接当させた
状態でこのコイルボビン３上端部外周面と前記円
筒周壁部２c1内面との間に流し込み塗布させた接
着剤を介して、コイルボビン３とドライブコーン
２とを接着一体化してある。 As clearly shown in FIG. 4, at the base end of the protruding central portion 2B of the drive cone 2, there is a cylindrical peripheral wall portion 2C 1 that is concentric with the coil bobbin 3 and has a slightly larger diameter toward the bottom.
The peripheral wall portion 2 is perpendicular to the axis of the coil bobbin 3 and is in contact with the upper edge of the coil bobbin 3.
C 2 is integrally formed with a stepped portion 2C, and when the upper end edge 3a of the coil bobbin 3 inserted into the stepped portion 2C is in contact with the abutment peripheral wall portion 2c 2 , the upper end portion of the coil bobbin 3 is The coil bobbin 3 and the drive cone 2 are bonded and integrated through an adhesive poured and applied between the outer circumferential surface and the inner surface of the cylindrical circumferential wall portion 2c1 .
尚、振動板１およびドライブコーン２は、小判
形に限らず、矩形、円形、その他いかなる形状で
あつても良い。 Note that the diaphragm 1 and the drive cone 2 are not limited to the oval shape, but may be rectangular, circular, or any other shape.
また、ドライブコーン２はシートからのプレス
加工成形品であつても、抄造法による成形法を使
用したものであつても良い。 Further, the drive cone 2 may be a press-molded product made from a sheet, or may be formed using a papermaking method.
第１図は本考案に係る動電型スピーカ全体の概
略縦断面図、第２図は第１図の半横断面図、第３
図はドライブコーンの斜視図、第４図は要部の拡
大縦断面図、第５図イ，ロ及び第６図イ，ロは
夫々従来例の要部拡大縦断面図である。
１……振動板、２……ドライブコーン、３……
コイルボビン、２Ａ……突出周辺部分、２Ｂ……
突出中央部分、２Ｃ……段部、４……ヨーク、５
……センターポール、６……マグネツト、７……
プレート、９……フレーム、１０……エツジ部
材。
Fig. 1 is a schematic vertical cross-sectional view of the entire electrodynamic speaker according to the present invention, Fig. 2 is a half cross-sectional view of Fig. 1, and Fig. 3
The figure is a perspective view of a drive cone, FIG. 4 is an enlarged longitudinal sectional view of the main part, and FIGS. 5A and 6B are enlarged longitudinal sectional views of the main part of the conventional example. 1...Diaphragm, 2...Drive cone, 3...
Coil bobbin, 2A... protruding peripheral part, 2B...
Protruding central portion, 2C...Stepped portion, 4...Yoke, 5
...Center pole, 6...Magnet, 7...
Plate, 9...Frame, 10...Edge member.
Claims (1)
部との二点に、単一ドライブコーン２で同一方
向に突出する周辺部分２Ａおよび中央部分２Ｂ
を接着するとともに、このドライブコーン２の
中央部下面にコイルボビン３の上端を接着して
なる動電型スピーカであつて、前記ドライブコ
ーン２の突出中央部分２Ｂの基端部に、前記コ
イルボビン３と同芯又はほぼ同芯の円筒周壁部
２C1と前記コイルボビン３の軸芯に対して垂
直でそのコイルボビン３上端縁３ａが接当する
突当て周壁部２C2とからなる段部２Ｃを一体
形成してあることを特徴とする動電型スピー
カ。 前記振動板１が小判形である実用新案登録請
求の範囲第項に記載の動電型スピーカ。[Claims for Utility Model Registration] On the lower surface of the flat diaphragm 1, a peripheral portion 2A and a central portion 2B are provided with a single drive cone 2 protruding in the same direction at two points: the peripheral portion of the plate and the central portion of the plate.
This is an electrodynamic speaker in which the upper end of the coil bobbin 3 is adhered to the lower surface of the center of the drive cone 2, and the coil bobbin 3 and the upper end of the coil bobbin 3 are attached to the base end of the protruding central portion 2B of the drive cone 2. A stepped portion 2C is integrally formed with a concentric or nearly concentric cylindrical peripheral wall portion 2C 1 and an abutment peripheral wall portion 2C 2 that is perpendicular to the axis of the coil bobbin 3 and that the upper end edge 3a of the coil bobbin 3 abuts. An electrodynamic speaker characterized by: An electrodynamic speaker according to claim 1, wherein the diaphragm 1 has an oval shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1643284U JPS60129798U (en) | 1984-02-07 | 1984-02-07 | electrodynamic speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1643284U JPS60129798U (en) | 1984-02-07 | 1984-02-07 | electrodynamic speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60129798U JPS60129798U (en) | 1985-08-30 |
| JPH0224314Y2 true JPH0224314Y2 (en) | 1990-07-03 |
Family
ID=30503196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1643284U Granted JPS60129798U (en) | 1984-02-07 | 1984-02-07 | electrodynamic speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60129798U (en) |
-
1984
- 1984-02-07 JP JP1643284U patent/JPS60129798U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60129798U (en) | 1985-08-30 |
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