JPS63275298A - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JPS63275298A JPS63275298A JP10985887A JP10985887A JPS63275298A JP S63275298 A JPS63275298 A JP S63275298A JP 10985887 A JP10985887 A JP 10985887A JP 10985887 A JP10985887 A JP 10985887A JP S63275298 A JPS63275298 A JP S63275298A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- speaker
- amplitude
- edge
- periphery
- 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
- 230000007935 neutral effect Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は、音響再生装置に用いられるスピーカ装置に
係り、特に振幅動作が直線的に変化するようにした振動
板の支持装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a speaker device used in a sound reproduction device, and particularly to a diaphragm support device that allows amplitude operation to vary linearly. .
[従来の技術]
従来のスピーカ装置は、布や発泡ポリエチレン等をロー
ル状あるいは波形状に成形し、これらを振動板のスピー
カエッヂおよびダンパとして設け、音声出力として振幅
する振動板を支持している。[Prior Art] In conventional speaker devices, cloth, foamed polyethylene, or the like is formed into a roll or wave shape, and these are provided as the speaker edge and damper of a diaphragm to support the diaphragm that vibrates as audio output. .
第3図(a) 、 (b)はこの種のスピーカ装置の一
例を中心から一方の側を示した正面図および断面図であ
る。図において、(1)は振動板(2)とフレーム(3
)との円周間に介装され、布等の可撓性が優れた素材に
よって成形されて振動板(2)を支持しているスピーカ
エツジ、(4)は振動板(1)と同様に可撓性が優れた
素材によって形成され、振動板(2)の下部を支持して
いるダンパ、(5)は音声信号が入力するボイスコイル
、(6)はこのボイスコイル(5)の音声信号電流によ
って音声信号を磁気エネルギに変換する磁気回路部、(
7)はボイスコイル(5)が捲回されたボイスコイルボ
ビンである。FIGS. 3(a) and 3(b) are a front view and a sectional view showing one side from the center of an example of this type of speaker device. In the figure, (1) represents the diaphragm (2) and the frame (3).
), the speaker edge is formed from a highly flexible material such as cloth and supports the diaphragm (2), and (4) is the same as the diaphragm (1). The damper is made of a highly flexible material and supports the lower part of the diaphragm (2), (5) is the voice coil into which the audio signal is input, and (6) is the audio signal of this voice coil (5). A magnetic circuit section that converts audio signals into magnetic energy using electric current (
7) is a voice coil bobbin around which the voice coil (5) is wound.
また、通常のスピーカ装置における振幅動作による非直
線性歪を改善するために、例えば特開昭57−2108
00号公報に開示されているような、広い振幅の直線性
領域を有して歪を少なくするとともに、振動板やボイス
コイルの横ずれ方向の力に対して強い抗力を支持する装
置、あるいは特開昭60−68799号公報に開示され
ているような、曲率半径の異なる少なくとも2つのロー
ル部とこれらを接続する連結部とを有し、この連結部の
応力変形によって円周方向に伸縮するエツジで振動板を
支持している装置等がある。In addition, in order to improve nonlinear distortion caused by amplitude operation in ordinary speaker devices, for example, Japanese Patent Laid-Open No. 57-2108
A device that has a wide amplitude linearity region to reduce distortion and supports strong resistance against forces in the direction of lateral displacement of a diaphragm or voice coil, as disclosed in Japanese Patent No. 00, or Japanese Patent Application Laid-Open No. As disclosed in Japanese Patent Publication No. 60-68799, it has at least two roll parts with different radii of curvature and a connecting part connecting these parts, and has an edge that expands and contracts in the circumferential direction due to stress deformation of this connecting part. There are devices that support the diaphragm.
次に、上記第3図に基づいて動作を説明する。Next, the operation will be explained based on FIG. 3 above.
ボイスコイル(5)に音声信号電流が入力すると、この
信号電流が磁気回路部(6)において磁気エネルギに変
換され、この磁気エネルギの作用によってボイスコイル
ボビン(7)を介した上記音声信号電流に応じた振動板
(1)の軸方向の振幅が生じ、音声波を軸方向に出力し
て再生音を放射するようになりでいる。この振動板(1
)の軸方向の振幅を音声信号電流に対して直線性が低下
しないように、振動板(2)とフレーム(3)の円周部
で固定されたスピーカエツジ(1)とダンパ(4)とに
よって、軸に対して垂直方向(以下横方向と云う)への
振動板(2)の動きを拘束するようになっている。When an audio signal current is input to the voice coil (5), this signal current is converted into magnetic energy in the magnetic circuit section (6), and the action of this magnetic energy causes the audio signal current to flow through the voice coil bobbin (7). An amplitude is generated in the axial direction of the diaphragm (1), and audio waves are output in the axial direction to radiate reproduced sound. This diaphragm (1
), the speaker edge (1) and damper (4) are fixed at the circumference of the diaphragm (2) and frame (3) so that the linearity of the amplitude in the axial direction with respect to the audio signal current does not deteriorate. This restricts the movement of the diaphragm (2) in the direction perpendicular to the axis (hereinafter referred to as the lateral direction).
[発明が解決しようとする問題点]
上記のような従来のスピーカ装置では、例えば第3図に
示すような装置のスピーカエツジ(1)およびダンパ(
4)が長期にわたって振動板(1)の支持を続けると、
その素材の不均一なことなどに起因して部分的に軸方向
の可撓性(柔軟性)の均衡を失い、振動板(1)の振幅
による横方向の分力が作用するようになると、音声信号
電流に対する軸方向の音声波の直線性が低下して、再生
音の歪が発生するようになる。[Problems to be Solved by the Invention] In the conventional speaker device as described above, the speaker edge (1) and the damper (
4) continues to support the diaphragm (1) for a long time,
If the balance of axial flexibility is partially lost due to non-uniformity of the material, and a lateral component force due to the amplitude of the diaphragm (1) begins to act, The linearity of the audio wave in the axial direction with respect to the audio signal current deteriorates, causing distortion in the reproduced sound.
また、この再生音の歪を防止する対策としてなされた特
開昭57−210800号公報に開示された装置によっ
ても、軸方向および横方向ともに不均一性な面があると
ともに、エツジ部材の成形のためにコスト高となる。さ
らに、特開昭60−68799号公報に開示された装置
では、横方向の特性が不均一になってしまう等の問題が
あった。Furthermore, even with the device disclosed in Japanese Patent Application Laid-open No. 57-210800, which was developed as a measure to prevent distortion of the reproduced sound, there is non-uniformity in both the axial and lateral directions, and the forming of the edge member is difficult. This results in high costs. Furthermore, the device disclosed in Japanese Patent Application Laid-Open No. 60-68799 has problems such as non-uniform characteristics in the lateral direction.
この発明は上記のような問題点を解消するためになされ
たもので、振動板を長期間振幅させて使用しても軸方向
の動きの直線性の劣化がほとんどなく、横方向への伸縮
性を全周にわたって均一な状態に保持することができる
ような振動板の支持装置を備えたスピーカ装置を得るこ
とを目的とする。This invention was made to solve the above-mentioned problems, and even if the diaphragm is used with vibration for a long period of time, there is almost no deterioration in the linearity of the axial movement, and it has good elasticity in the lateral direction. It is an object of the present invention to provide a speaker device equipped with a support device for a diaphragm that can maintain a diaphragm in a uniform state over its entire circumference.
[問題点を解消するための手段]
この発明に係るスピーカ装置は、スピーカエツジの両端
部を振動板およびフレーム外周部に固着゛した支持装置
を備えたものにおいて、上記スピーカエツジを、全周に
わたって均一な可撓特性を有しかつ上記振動板の振幅時
には常に引張力によって振動板を支持する断面形状に成
形するようにしたちある。[Means for Solving the Problems] A speaker device according to the present invention is provided with a support device that fixes both ends of a speaker edge to a diaphragm and an outer peripheral portion of a frame, in which the speaker edge is fixed to the diaphragm and the outer periphery of the frame. The diaphragm is formed into a cross-sectional shape that has uniform flexibility and always supports the diaphragm by a tensile force when the diaphragm vibrates.
[作用]
この発明における振幅時の振動板は、全周にわたって均
等な可撓特性による引張力で支持されているので、振動
板は正しくスピーカ軸方向にのみ振幅変位する。[Function] Since the diaphragm according to the present invention is supported by a tensile force due to uniform flexibility over the entire circumference during amplitude, the diaphragm correctly oscillates only in the axial direction of the speaker.
[実施例]
第1図はこの発明の一実施例によるスピーカ装置におけ
る振動板の振幅変化によるエツジ部の変位状態を示す断
面図であり、(1) 、 (2) 、 (3)は従来例
を示した第2図における同符号の部分と同一または相当
部分を示す。また、(a)は振動板= 4 −
(2)が振幅して音声放射の前方へ移動時に状態を示し
、(b)および(C)は同じく中立位置の状態および音
声放射の後方へ移動時の状態をそれぞれ示す。[Embodiment] Fig. 1 is a cross-sectional view showing the displacement state of the edge portion due to the amplitude change of the diaphragm in a speaker device according to an embodiment of the present invention, and (1), (2), and (3) are the conventional example. The same or corresponding parts are shown with the same reference numerals in FIG. In addition, (a) shows the state when the diaphragm = 4 - (2) is oscillated and moves to the front of the sound radiation, and (b) and (C) similarly show the state at the neutral position and when it moves to the back of the sound radiation. The status of each is shown.
スピーカエツジ(1)は振動板(2)による力が加わら
ない中立状態を示す(b)図における断面形状で、全周
にわたって極めて均一な可撓特性を有するように繊維等
によって成形され、接着剤等により両端部(la)、
(lb)と振動板(2)およびフレーム(3)の外周部
とを固着している。The speaker edge (1) has a cross-sectional shape in figure (b), which shows the neutral state where no force is applied by the diaphragm (2). etc., both ends (la),
(lb) and the outer periphery of the diaphragm (2) and frame (3) are fixed.
上記のように構成されたこの発明によるスピーカ装置に
おいて、振動板(2)の振幅にともなって、振動板(2
)およびこれを外周部で支持しているスピーカエツジ(
1)は、第1図(a) 、(b) 、(c)で示すよう
なスピーカ軸(8)とスピーカエツジ(1)の中点P
、P 、P とのそれぞれの距離(半径)a
b c
ra、r、、r を変動させ、この場合(b)で示す
中立状態のエツジ(1)の断面曲率半径Rよりも、(a
) 、 (C)でそれぞれ示すように振動板(2)の前
方あるいは後方の駆動位置におけるスピーカエッジ(1
)の断面曲率半径R,R2の方が大きくなす
るように、スピーカエツジ(1)の断面が変形する。In the speaker device according to the present invention configured as described above, the amplitude of the diaphragm (2) increases as the amplitude of the diaphragm (2) increases.
) and the speaker edge (
1) is the midpoint P between the speaker axis (8) and the speaker edge (1) as shown in Fig. 1 (a), (b), and (c).
, P , P and the respective distances (radius) a
By varying b cr ra, r, , r , in this case, (a
) and (C), the speaker edge (1) at the front or rear drive position of the diaphragm (2).
) The cross section of the speaker edge (1) is deformed such that the cross-sectional curvature radii R and R2 of the speaker edge (1) become larger.
また、スピーカエツジ(1)がスピーカ軸(8)を中心
として極めて均一な可撓特性を有しているため、振動板
(2)の大振幅時でもエツジ(1)は全周にわたって振
動板(2)を均等な引張力で支持するようになっている
。従ワて、振幅時の振動板(2)はスピーカ軸(8)方
向にのみ正しく変位するので、歪がない直線性の優れた
再生音を放射することができるようになる。In addition, since the speaker edge (1) has extremely uniform flexibility around the speaker axis (8), even when the diaphragm (2) has a large amplitude, the edge (1) can be attached to the diaphragm (2) over the entire circumference. 2) is supported with uniform tensile force. As a result, the diaphragm (2) is correctly displaced only in the direction of the speaker axis (8) during amplitude, so that reproduced sound with excellent linearity and no distortion can be emitted.
[発明の効果]
この発明は以上説明したように、均一な可撓特性を有す
るスピーカエツジを振動板の外周部に固着し、この振動
板の振幅時には上記スピーカエツジが振動板全周にわた
って均一な引張力で支持するように構成したので、大振
幅時においても振動板はスピーカ軸方向にのみ変位する
ので、直線性の優れた再生音が得られる効果がある。[Effects of the Invention] As explained above, in this invention, a speaker edge having uniform flexibility is fixed to the outer circumference of a diaphragm, and when the diaphragm is vibrating, the speaker edge is uniform over the entire circumference of the diaphragm. Since it is configured to be supported by tensile force, the diaphragm is displaced only in the axial direction of the speaker even when the amplitude is large, so that reproduced sound with excellent linearity can be obtained.
第1図はこの発明の一実施例によるスピーカ装置の要部
および振幅時の振動板とスピーカエツジの変位を示す断
面図、第2図(a) 、 (b)は通常のスピーカ装置
の構成例の中心から一方の側を示す平面図及び断面図で
ある。
図において、(1)はスピーカエツジ、(2)は振動板
、(3)はフレーム。
なお、図中同一符号は同一または相当部分を示す。Fig. 1 is a sectional view showing the main parts of a speaker device according to an embodiment of the present invention and the displacement of the diaphragm and the speaker edge during vibration, and Fig. 2 (a) and (b) are examples of the configuration of a normal speaker device. FIG. In the figure, (1) is the speaker edge, (2) is the diaphragm, and (3) is the frame. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ム外周部に固着した支持装置を備えたものにおいて、上
記スピーカエッジを、全周にわたって均一な可撓特性を
有しかつ上記振動板の振幅時には常に引張力によって上
記振動板を支持するような断面形状に成形したことを特
徴とするスピーカ装置。A support device is provided in which both ends of the speaker edge are fixed to the diaphragm and the outer periphery of the frame, respectively, and the speaker edge has uniform flexibility over the entire circumference and is always subjected to tensile force when the diaphragm vibrates. A speaker device characterized in that the speaker device is formed into a cross-sectional shape that supports the diaphragm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985887A JPS63275298A (en) | 1987-05-07 | 1987-05-07 | Speaker device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985887A JPS63275298A (en) | 1987-05-07 | 1987-05-07 | Speaker device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63275298A true JPS63275298A (en) | 1988-11-11 |
Family
ID=14520979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10985887A Pending JPS63275298A (en) | 1987-05-07 | 1987-05-07 | Speaker device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63275298A (en) |
-
1987
- 1987-05-07 JP JP10985887A patent/JPS63275298A/en active Pending
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