JPS63164797A - Dynamic speaker - Google Patents
Dynamic speakerInfo
- Publication number
- JPS63164797A JPS63164797A JP31221986A JP31221986A JPS63164797A JP S63164797 A JPS63164797 A JP S63164797A JP 31221986 A JP31221986 A JP 31221986A JP 31221986 A JP31221986 A JP 31221986A JP S63164797 A JPS63164797 A JP S63164797A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- speaker
- yoke
- slot
- magnetic gap
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 26
- 230000005520 electrodynamics Effects 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 239000011553 magnetic fluid Substances 0.000 abstract description 8
- 230000004907 flux Effects 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 3
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 3
- 239000010419 fine particle Substances 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はご低音域における高忠実再生をねらいとする薄
形動電形スピーカて関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a thin electrodynamic speaker aiming at high fidelity reproduction in the bass range.
従来の技術
従来、薄形のスピーカは内磁形スピーカを例にとると、
第３図のようである。すなわちヨーク１の中央付近にマ
グネット２を接合しマグネットのヨーク接合面と反対の
面にポールピース３を接合、ヨークとポールピースで構
成される磁気ギャップＧには周囲をフレーム７に固定さ
れたダンノζ−４に接合されたボイスコイル６の線輪６
′を磁気ギャップ周囲に触れないように配する。ボイス
コイル６には振動板６を接合し、外周はフレーム７にエ
ツジ８を介して接合する。さらに振動板６の中央付近に
は、磁気ギャップへのゴミの侵入を防ぐダストキャップ
９を接合する。Conventional technology Conventionally, thin speakers are, for example, internal magnetic speakers.
As shown in Figure 3. That is, the magnet 2 is connected near the center of the yoke 1, and the pole piece 3 is connected to the opposite side of the magnet to the yoke joint surface. Wire ring 6 of voice coil 6 joined to ζ-4
′ is placed around the magnetic gap so that it does not touch the magnetic gap. A diaphragm 6 is joined to the voice coil 6, and its outer periphery is joined to a frame 7 via an edge 8. Furthermore, a dust cap 9 is attached near the center of the diaphragm 6 to prevent dust from entering the magnetic gap.
次に、動作であるが、ボイスコイル線輪６′にシース電
流が流れると、線輪６′は磁気ギャップの磁束より力を
受は図中の矢印の方向に往復運動を行なう。ボイスコイ
ル６に接合された撮動板θはこれに伴って運動し、振動
板６の前面の空気を振動させ音を発生させるのである。Next, in operation, when a sheath current flows through the voice coil wire 6', the wire 6' receives a force from the magnetic flux of the magnetic gap and performs reciprocating motion in the direction of the arrow in the figure. The imaging plate θ connected to the voice coil 6 moves accordingly, vibrates the air in front of the diaphragm 6, and generates sound.
この時ボイスコイル６の往復運動の運動範囲（以下振幅
と呼ぶ）は、ダンパー４のヨーク１への衝突までの寸法
゛ゞＡ”、ボイスコイルのヨークへの衝突寸法４１８１
１及びエツジ、ダンパーの最大伸長寸法により制限され
る。At this time, the range of motion of the reciprocating motion of the voice coil 6 (hereinafter referred to as amplitude) is the dimension ``A'' until the damper 4 collides with the yoke 1, and the dimension 4181 when the voice coil collides with the yoke.
1 and edge, limited by the maximum extension dimension of the damper.
これに伴い振動板６も同じように振幅を制限される。Accordingly, the amplitude of the diaphragm 6 is similarly limited.
発明が解決しようとする問題点
近年の音楽ソースの質の向上に伴い、スピーカの低音域
再生能力の向上要求も強くなっており、省スペース化に
貢献している薄形スピーカに対しても、例外ではない。Problems that the invention aims to solve As the quality of music sources has improved in recent years, there has been a strong demand for improved low frequency reproduction capabilities of speakers. This is not an exception.
ここで、“Ｂ”の寸法すなわちボイスコイル６のヨーク
１への衝突寸法について考察する。第４図ａ、ｂは“Ｂ
”の寸法を大きくするための内磁形磁気回路型、外磁形
磁気回回型の従来技術であり、ヨーク、プレートの底面
をそれぞれ凹形状とした例であるが、この構造であると
、スピーカ高さの制限された薄形スピーカには有効では
ない。薄形スピーカには第４図Ｑ。Here, the dimension "B", that is, the dimension of the collision of the voice coil 6 with the yoke 1 will be considered. Figure 4 a and b are “B”
This is an example of the conventional technology of the internal magnetic circuit type and the external magnetic circuit type to increase the size of the yoke and the bottom of the plate. It is not effective for thin speakers with limited height.Figure 4Q is used for thin speakers.
ｄに示す方法が有効である。この方法であると、スピー
カの高さを一定に保ったままで、６Ｂ”の寸法を大きく
する事ができる。尚、第４図Ｇは内磁形磁気回路型、同
図ｄは外磁気回路型の断面図である。しかし、この方法
の欠点は、ヨーク、あるいはプレートに設けた溝の部分
のヨーク、プレート厚みが薄くなり、この部分の磁気抵
抗が増し、磁気ギャップの磁束密度が低下する事である
。そレニヨリスピーカの薄形化は実現できても、スピー
カの能率低下をまねくという問題が起こる。本発明では
、この点に着目、スピーカの能率低下をまねく事ない動
電形スピーカを提供せんとするものである。The method shown in d is effective. With this method, the 6B" dimension can be increased while keeping the height of the speaker constant. Note that G in Figure 4 is an internal magnetic circuit type, and d in the same figure is an external magnetic circuit type. However, the disadvantage of this method is that the thickness of the yoke or plate becomes thinner at the grooves provided in the plate, the magnetic resistance increases in this area, and the magnetic flux density of the magnetic gap decreases. Even if it is possible to make a thinner speaker, there is a problem that the efficiency of the speaker decreases.The present invention focuses on this point and develops an electrodynamic speaker that does not cause a decrease in speaker efficiency. This is what we intend to provide.
問題点を解決するための手段
本発明では磁気ギャップに対応するヨーク部分に溝を設
け、この溝に磁性流体を配したものである。Means for Solving the Problems In the present invention, a groove is provided in the yoke portion corresponding to the magnetic gap, and a magnetic fluid is arranged in this groove.
作用
この溝部分の磁性流体には強磁性体の微粒子が多量に含
まれており、磁気ギャップの磁束密度は上昇し、スピー
カ能率も高くなる。Function: The magnetic fluid in this groove portion contains a large amount of ferromagnetic particles, increasing the magnetic flux density in the magnetic gap and increasing the speaker efficiency.
実施例
第１図は本発明の第１の実施例を示゛す断面図であり、
内磁形磁気回路に適用した例であり、ヨーク１に溝を設
け、この溝に磁性流体１０を配した例である。第２図は
本発明の第２の実施例を示す断面図であり、外磁形磁気
回路に適用した例であり、ポールピース付プレートに溝
を設け、この溝に磁性流体を配した例である。ここで１
′はポールピース付プレート、２′はドーナツ形状のマ
グネット、３′はトッププレートであり、他の部品は内
磁形スピーカと同じである。本実施例によれば溝を設け
ても、この溝に磁性流体を配置するので、磁気抵抗の増
大はない。Embodiment FIG. 1 is a sectional view showing a first embodiment of the present invention.
This is an example applied to an internal magnet type magnetic circuit, in which a groove is provided in the yoke 1 and a magnetic fluid 10 is placed in the groove. FIG. 2 is a sectional view showing a second embodiment of the present invention, which is an example applied to an external magnetic circuit, in which a groove is provided in a plate with a pole piece, and a magnetic fluid is arranged in this groove. be. Here 1
' is a plate with a pole piece, 2' is a donut-shaped magnet, and 3' is a top plate; the other parts are the same as the internal magnetic speaker. According to this embodiment, even if a groove is provided, since the magnetic fluid is placed in the groove, the magnetic resistance does not increase.
発明の効果
本発明によシ、薄形スピーカの低音域再生能力を、能率
低下等の性能劣化を伴う事なく向上させる事ができる。Effects of the Invention According to the present invention, the low frequency reproduction ability of a thin speaker can be improved without performance deterioration such as a decrease in efficiency.
第１図、第２図は、本発明の第１．第２の実施例を示す
スピーカの断面図、第３図は従来の薄形スピーカの断面
図、第４図ａ ％ ａは従来のヨーク。
プレートの加工例を示す断面図である。
１・・・・・・ヨーク、２．２′・・・・・・マグネッ
ト、３・・・・・・ポールピース、１′・・・・・・ポ
ールピース付プレート、３′・・・・・・トッププレー
ト、１Ｏ，１Ｃ；・・・・・・磁性流体。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
召良気ギイップ
第２図
硫気科ソグ
／−−−ヨーク ６−据動扱２− マグ
ネット γ一フレーム３−・−ポールピース
８・−エッジ６フーボイスコイル課輸
第３図
（（Ｌ） （ｂ）
β′ンＢ ｓ’ンＢ第４
図FIGS. 1 and 2 illustrate the first aspect of the present invention. FIG. 3 is a sectional view of a conventional thin speaker, and FIG. 4 a is a sectional view of a conventional yoke. It is a sectional view showing an example of processing a plate. 1... Yoke, 2.2'... Magnet, 3... Pole piece, 1'... Plate with pole piece, 3'... ...Top plate, 1O, 1C; ...Magnetic fluid. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Fig. 2 - Yoke 6 - Stationary handling 2 - Magnet γ - Frame 3 - - Pole piece 8 - Edge 6 - Voice coil division Fig. 3 ((L ) (b) β'n B s'n B 4th
figure
Claims (1)
断面形状を持つ溝を、上記磁気ギャップ円筒形状の延長
上のプレート、あるいはヨーク上に設け、この溝部分に
強磁性体を配した事を特徴とする動電形スピーカ。A groove having a donut-shaped cross-sectional shape, which is almost the same as a cylindrical magnetic gap, is provided on a plate or yoke that is an extension of the cylindrical shape of the magnetic gap, and a ferromagnetic material is placed in this groove portion. Features an electrodynamic speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31221986A JPS63164797A (en) | 1986-12-26 | 1986-12-26 | Dynamic speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31221986A JPS63164797A (en) | 1986-12-26 | 1986-12-26 | Dynamic speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63164797A true JPS63164797A (en) | 1988-07-08 |
Family
ID=18026621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31221986A Pending JPS63164797A (en) | 1986-12-26 | 1986-12-26 | Dynamic speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164797A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100858958B1 (en) | 2007-04-05 | 2008-09-17 | 김진상 | Speaker |
| KR100890220B1 (en) | 2008-09-10 | 2009-03-25 | 주식회사 예일전자 | Sensory signal ouput apparatus |
-
1986
- 1986-12-26 JP JP31221986A patent/JPS63164797A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100858958B1 (en) | 2007-04-05 | 2008-09-17 | 김진상 | Speaker |
| KR100890220B1 (en) | 2008-09-10 | 2009-03-25 | 주식회사 예일전자 | Sensory signal ouput apparatus |
| WO2010030071A3 (en) * | 2008-09-10 | 2010-05-06 | 주식회사 예일전자 | Sensory signal output apparatus |
| US8379906B2 (en) | 2008-09-10 | 2013-02-19 | Yea Il Electronics Co., Ltd. | Sensory signal output apparatus |
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