JPH05103395A - Damper for loudspeaker - Google Patents
Damper for loudspeakerInfo
- Publication number
- JPH05103395A JPH05103395A JP3258911A JP25891191A JPH05103395A JP H05103395 A JPH05103395 A JP H05103395A JP 3258911 A JP3258911 A JP 3258911A JP 25891191 A JP25891191 A JP 25891191A JP H05103395 A JPH05103395 A JP H05103395A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- voice coil
- frame
- speaker
- fixed
- 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.)
- Granted
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は動電形スピーカに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodynamic speaker.
【0002】[0002]
【従来の技術】近年、電気音響変換器の一つとしての動
電型スピーカが、音楽・音声の再生に利用されることが
多くなっている。2. Description of the Related Art In recent years, an electrodynamic speaker as one of electro-acoustic transducers has been increasingly used for reproducing music and voice.
【0003】以下に従来の動電型スピーカについて図面
を参照しながら説明する。動電型スピーカは図5に示す
ように、マグネット1、マグネット1の上面に設けられ
た上ヨーク2、マグネット1の下面に設けられた下ヨー
ク3、下ヨーク3と連続しているセンターポール4、上
ヨーク2の内周面とセンターポール4の外周面との間に
できる磁気空隙5、上ヨーク2の上面に設けられたフレ
ーム6、磁気空隙5内に納められたボイスコイル7、内
周をボイスコイル7に、外周をフレーム6に固着した波
形のダンパー8、内周をボイスコイル7に、外周を後述
するエッジに固着した振動板9、内周を振動板9に、外
周をフレーム6に固着したエッジ10などで構成されて
いる。A conventional electrodynamic speaker will be described below with reference to the drawings. As shown in FIG. 5, the electrodynamic speaker includes a magnet 1, an upper yoke 2 provided on the upper surface of the magnet 1, a lower yoke 3 provided on the lower surface of the magnet 1, and a center pole 4 continuous with the lower yoke 3. A magnetic gap 5 formed between the inner peripheral surface of the upper yoke 2 and the outer peripheral surface of the center pole 4, a frame 6 provided on the upper surface of the upper yoke 2, a voice coil 7 housed in the magnetic gap 5, an inner periphery To a voice coil 7, a waveform-shaped damper 8 having an outer periphery fixed to a frame 6, an inner periphery to a voice coil 7, a diaphragm 9 having an outer periphery fixed to an edge described later, an inner periphery to a diaphragm 9, and an outer periphery to the frame 6 It is composed of the edge 10 and the like fixed to the.
【0004】以上のように構成された動電型スピーカに
ついて、以下その動作を説明する。ボイスコイル7に巻
いてあるコイルに電流を流すと、磁気空隙5内の磁界に
対し電流が直交することになり、フレミングの法則によ
り、磁界と電流のそれぞれと直角な方向に力が生じる。
このときダンパー8およびエッジ10はボイスコイル7
をセンターポール4と同心になるように支持し、振動板
9が振動したときに上ヨーク2の厚み方向の中点とボイ
スコイル7のコイル巻幅の中点を一致させるように力が
加わる振動方向のばねとして働く。ボイスコイル7に交
流を流すと、ボイスコイル7と振動板9は、ダンパー8
およびエッジ10に支持されながら振動するため、空気
が振動し疎密波が発生し、音となって聞こえる。The operation of the electrodynamic speaker constructed as above will be described below. When an electric current is passed through the coil wound around the voice coil 7, the electric current is orthogonal to the magnetic field in the magnetic air gap 5, and a force is generated in the directions perpendicular to the magnetic field and the electric current according to Fleming's law.
At this time, the damper 8 and the edge 10 are attached to the voice coil 7.
Is supported so as to be concentric with the center pole 4, and when the diaphragm 9 vibrates, a force is applied so that the midpoint in the thickness direction of the upper yoke 2 and the midpoint of the coil winding width of the voice coil 7 are matched. Acts as a direction spring. When an alternating current is applied to the voice coil 7, the voice coil 7 and the vibration plate 9 move to the damper 8
Further, since the air vibrates while being supported by the edge 10, air vibrates and compressional waves are generated, which is heard as a sound.
【0005】[0005]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、第一の問題点として、従来の波形のダンパ
ー8は円周方向に閉じた構造であるため、図6の振動時
のダンパー断面図に示すように、任意の点Pについて考
えたとき、△Xだけダンパーが振動すると点Pの径は△
r変化することになり、円周方向に力が発生する。この
ため、大振幅振動が困難となり図3に示す「力−変位」
特性図のA曲線に示すように大振幅時に変位が飽和して
しまいスチフネスが非直線となる。However, in the above-mentioned conventional structure, the first problem is that the conventional corrugated damper 8 has a structure that is closed in the circumferential direction. As shown in, when the arbitrary point P is considered, if the damper vibrates by ΔX, the diameter of the point P becomes Δ
Therefore, a force is generated in the circumferential direction. Therefore, large-amplitude vibration becomes difficult, and the "force-displacement" shown in FIG.
As shown by the curve A in the characteristic diagram, the displacement is saturated at a large amplitude and the stiffness becomes non-linear.
【0006】第2の問題点として、図4に示す特性Aの
微小入力時の「力−変位」特性図に示すように、変位が
微小なときはダンパーの復元力が非常に小さくスチフネ
スが非直線となる。これらの現象が原因となって音圧周
波数特性に高調波歪が発生するという問題点を有してい
た。As a second problem, as shown in the "force-displacement" characteristic diagram at the time of minute input of the characteristic A shown in FIG. 4, the restoring force of the damper is very small and the stiffness is not large when the displacement is minute. It becomes a straight line. Due to these phenomena, there is a problem that harmonic distortion occurs in the sound pressure frequency characteristic.
【0007】本発明は上記従来の問題点を解決するもの
で、歪の原因となっているダンパーの非直線性を改善し
直線性のよいスピーカ用ダンパーを提供することを目的
とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a speaker damper having good linearity by improving the non-linearity of the damper which causes distortion.
【0008】[0008]
【課題を解決するための手段】上記目的を達成するため
に本発明のスピーカ用ダンパーは、固定部と可動部の境
界線が直線で、さらに、可動部の中途に半円の両端部か
ら直線を延長した断面形状がロール状をした個片がボイ
スコイルの周囲に放射状に複数個配置し、各個片のフレ
ーム固定部を外周方向に張力を加えた状態でフレームに
固定した構造としている。In order to achieve the above object, a speaker damper according to the present invention has a straight line between a fixed portion and a movable portion, and a straight line from both ends of a semicircle in the middle of the movable portion. A plurality of individual pieces each having a roll-shaped extended cross section are radially arranged around the voice coil, and the frame fixing portion of each individual piece is fixed to the frame with tension applied in the outer peripheral direction.
【0009】[0009]
【作用】本発明は上記した構成によって、微小振幅時か
ら大振幅時まで直線性のよいスピーカ用ダンパーが得ら
れる。According to the present invention, the speaker damper having a good linearity can be obtained from the minute amplitude to the large amplitude by the above-mentioned structure.
【0010】[0010]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【0011】図1、図2に示すように、ダンパーはフレ
ーム固定部11、ロール状をした可動部12、フレーム
固定部11と可動部12の境界線である可動部外周境界
線13、ボイスコイル固定部14、可動部12とボイス
コイル固定部14の境界線である可動部内周境界線1
5、ボイスコイル固定部14の内周に固定したボイスコ
イル16で構成されている。As shown in FIGS. 1 and 2, the damper includes a frame fixed part 11, a movable part 12 in a roll shape, a movable part outer peripheral boundary line 13 which is a boundary line between the frame fixed part 11 and the movable part 12, a voice coil. Inner boundary line 1 of the movable part, which is a boundary line between the fixed part 14, the movable part 12 and the voice coil fixed part 14.
5. The voice coil fixing part 14 is composed of a voice coil 16 fixed to the inner circumference.
【0012】以上のように構成されたスピーカ用ダンパ
ーについて、以下その動作について説明する。スピーカ
ユニットとしての発音の動作は従来例と同様である。可
動部12、可動部外周境界線13、可動部内周境界線1
5が、ボイスコイル16の円周上の接線に平行な直線で
構成されているため、従来のダンパーの動作で述べたよ
うな円周方向にかかる力は発生せず、さらに、可動部1
2のロール状をした個片が上下対称になる構成としてい
るため、図3に示す大振幅時の「力−変位」特性図のB
曲線のように大振幅まで直線性に優れたスチフネスが得
られる。また、ダンパーのフレーム固定部を外周方向に
張力を加えた状態でフレームに固定しているため、微小
振幅時の復元力の非常に弱い部分を使わずに振動させる
ことができ、図4に示す微小振幅時の「力−変位」特性
図のBのように直線性の良いスチフネスが得られる。The operation of the speaker damper thus constructed will be described below. The operation of producing sound as a speaker unit is similar to that of the conventional example. Movable part 12, movable part outer boundary line 13, movable part inner boundary line 1
Since 5 is composed of a straight line parallel to the tangential line on the circumference of the voice coil 16, the force exerted in the circumferential direction as described in the operation of the conventional damper is not generated, and further, the movable portion 1
Since the two roll-shaped pieces are vertically symmetrical, B of the "force-displacement" characteristic diagram at large amplitude shown in FIG.
Stiffness excellent in linearity can be obtained up to large amplitude like a curve. Further, since the frame fixing portion of the damper is fixed to the frame in a state where tension is applied in the outer peripheral direction, it is possible to vibrate without using a portion where the restoring force at the time of minute amplitude is very weak, as shown in FIG. Stiffness with good linearity can be obtained as indicated by B in the "force-displacement" characteristic diagram at a minute amplitude.
【0013】ここで、フレーム固定端に内周方向の力を
加えて固定すると、振動している途中の段階でダンパー
に張力がかからない振動位置を通過することになり、こ
の位置の前後で復元力が弱くなり非線形なスチフネスと
なってしまう。また、隣合う個片のフレーム固定部を高
さ方向に交互に上下させて固定すことによる張力のかけ
方においても同様に非線形なスチフネスとなる。よっ
て、どのような変位量においても可動部12に張力をか
けることのできる外周方向への張力が有効である。本実
施例のスピーカ用ダンパーは、大振幅を要求されるスピ
ーカユニットに用いられることが多く、大振幅を可能に
するため可動部12の中途に半円の両端部から直線を延
長した断面形状がロール状をした形状とした。さらに、
大振幅時の耐久性をもたせるため図1(a)の平面図に
示すように、屈曲を繰り返す可動部12の面積を大きく
とれるように台形の個片形状とした。Here, if a force in the inner circumferential direction is applied to the frame fixed end to fix the frame, the damper will pass through a vibration position where no tension is applied to the damper in the middle of the vibration, and the restoring force before and after this position. Becomes weaker and becomes a non-linear stiffness. Further, the non-linear stiffness is also obtained in the manner of applying tension by alternately fixing the frame fixing portions of adjacent pieces by moving them up and down in the height direction. Therefore, tension in the outer circumferential direction that can apply tension to the movable portion 12 is effective regardless of the amount of displacement. The speaker damper of this embodiment is often used in a speaker unit that requires a large amplitude, and has a cross-sectional shape in which a straight line is extended from both ends of a semicircle in the middle of the movable portion 12 in order to enable a large amplitude. The shape was a roll. further,
As shown in the plan view of FIG. 1 (a), in order to provide durability at a large amplitude, the trapezoidal piece is formed so that the area of the movable portion 12 that repeatedly bends can be large.
【0014】なお、本実施例では、個片の数を10個と
したが、複数であればよい。In this embodiment, the number of pieces is 10, but it may be any number.
【0015】[0015]
【発明の効果】以上の実施例から明らかなように本発明
は、固定部と可動部の境界線が直線で、さらに、可動部
の中途に半円の両端部から直線を延長した断面形状がロ
ール状をした個片がボイスコイルの周囲に放射状に複数
個配置し、各個片のフレーム固定部を外周方向に張力を
加えた状態でフレームに固定した構造にしたことによ
り、微小振幅から大振幅まで直線性のよいスチフネスを
得られ、歪の少い優れたスピーカ用ダンパーを実現でき
るものである。As is apparent from the above embodiments, the present invention has a straight line between the fixed part and the movable part, and a straight line extending from both ends of the semicircle in the middle of the movable part. By arranging a plurality of roll-shaped pieces radially around the voice coil and fixing the frame fixing part of each piece to the frame with tension applied in the outer peripheral direction, a small amplitude to a large amplitude can be obtained. It is possible to obtain a stiffness with good linearity and to realize an excellent speaker damper with little distortion.
【図1】(a)は本発明の一実施例のスピーカ用ダンパ
ー平面図 (b)は同側面図1A is a plan view of a speaker damper according to an embodiment of the present invention, and FIG. 1B is a side view of the same.
【図2】同実施例のスピーカ用ダンパー斜視図FIG. 2 is a perspective view of a speaker damper of the same embodiment.
【図3】同スピーカ用ダンパーの大振幅時の「力−変
位」特性図[Fig. 3] "Force-displacement" characteristic diagram of the speaker damper at large amplitude
【図4】同スピーカ用ダンパーの微小振幅時の「力−変
位」特性図FIG. 4 is a characteristic diagram of “force-displacement” when the damper for the speaker has a small amplitude.
【図5】従来のスピーカ用ダンパーを用いたスピーカユ
ニット断面図FIG. 5 is a sectional view of a speaker unit using a conventional speaker damper.
【図6】同スピーカ用ダンパー振動時の断面図FIG. 6 is a cross-sectional view when the damper for the speaker vibrates.
11 フレーム固定部 12 可動部(ロール状) 13 可動部外周境界線 14 ボイスコイル固定部 15 可動部内周境界線 16 ボイスコイル 11 Frame Fixed Part 12 Movable Part (Rolled) 13 Movable Part Outer Boundary Line 14 Voice Coil Fixed Part 15 Movable Part Inner Boundary Line 16 Voice Coil
Claims (5)
うにフレームに固定された支持体を有し、固定部と可動
部の境界線が直線で、さらに、前記可動部の中途に半円
の両端部から直線を延長した断面形状がロール状をした
個片が前記ボイスコイルの周囲に放射状に複数個配置し
てなるスピーカ用ダンパー。1. A support body fixed to a frame so as to support a voice coil moving up and down, a boundary line between the fixed portion and the movable portion is a straight line, and a semicircle is formed in the middle of the movable portion. A damper for a speaker, wherein a plurality of individual pieces each having a roll shape in a straight line extending from both ends are radially arranged around the voice coil.
向きに配置されてなる請求項1記載のスピーカ用ダンパ
ー。2. The speaker damper according to claim 1, wherein the individual roll-shaped pieces are alternately arranged facing upward and downward.
周上の接線に平行な直線に沿って延びるように配されて
なる請求項1記載のスピーカ用ダンパー。3. The speaker damper according to claim 1, wherein each roll-shaped piece is arranged so as to extend along a straight line parallel to a tangent line on the circumference of the voice coil.
フレーム側を長辺とした台形の形状をしてなる請求項1
記載のスピーカ用ダンパー。4. A plan view of each piece has a voice coil side on a short side,
A trapezoidal shape having the frame side as a long side.
The speaker damper described.
を加えた状態でフレームに固定してなるスピーカ用ダン
パー。5. A speaker damper in which the frame fixing portion of each piece is fixed to the frame in a state where tension is applied in the outer peripheral direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25891191A JP2949957B2 (en) | 1991-10-07 | 1991-10-07 | Speaker damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25891191A JP2949957B2 (en) | 1991-10-07 | 1991-10-07 | Speaker damper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05103395A true JPH05103395A (en) | 1993-04-23 |
JP2949957B2 JP2949957B2 (en) | 1999-09-20 |
Family
ID=17326747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25891191A Expired - Fee Related JP2949957B2 (en) | 1991-10-07 | 1991-10-07 | Speaker damper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2949957B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0836362A2 (en) * | 1996-10-09 | 1998-04-15 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker |
KR100752051B1 (en) * | 2005-09-26 | 2007-08-23 | 에스텍 주식회사 | Speaker Damper |
US7428946B2 (en) * | 2002-10-25 | 2008-09-30 | Matsushita Electric Industrial Co., Ltd. | Suspension and electro-acoustic transducer using the suspension |
WO2009147700A1 (en) * | 2008-06-05 | 2009-12-10 | パナソニック株式会社 | Speaker |
JP2011055215A (en) * | 2009-09-01 | 2011-03-17 | J&K Car Electronics Corp | Corrugation damper and speaker |
GB2621032A (en) * | 2019-11-08 | 2024-01-31 | B&W Group Ltd | Improvements in and relating to loudspeaker spiders |
-
1991
- 1991-10-07 JP JP25891191A patent/JP2949957B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0836362A2 (en) * | 1996-10-09 | 1998-04-15 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker |
US6069965A (en) * | 1996-10-09 | 2000-05-30 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker |
EP0836362A3 (en) * | 1996-10-09 | 2005-03-09 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker |
US7428946B2 (en) * | 2002-10-25 | 2008-09-30 | Matsushita Electric Industrial Co., Ltd. | Suspension and electro-acoustic transducer using the suspension |
KR100752051B1 (en) * | 2005-09-26 | 2007-08-23 | 에스텍 주식회사 | Speaker Damper |
WO2009147700A1 (en) * | 2008-06-05 | 2009-12-10 | パナソニック株式会社 | Speaker |
JP2011055215A (en) * | 2009-09-01 | 2011-03-17 | J&K Car Electronics Corp | Corrugation damper and speaker |
GB2621032A (en) * | 2019-11-08 | 2024-01-31 | B&W Group Ltd | Improvements in and relating to loudspeaker spiders |
GB2621032B (en) * | 2019-11-08 | 2024-04-17 | B&W Group Ltd | Improvements in and relating to loudspeaker spiders |
Also Published As
Publication number | Publication date |
---|---|
JP2949957B2 (en) | 1999-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1322588C (en) | Audio transducer with controlled flexibility diaphragm | |
CN112911470A (en) | Loudspeaker module | |
JP2949957B2 (en) | Speaker damper | |
KR20060093412A (en) | Double diaphragm micro speaker | |
JP2000217192A (en) | Speaker | |
JP3820717B2 (en) | Speaker | |
JPH11205895A (en) | Loudspeaker | |
JPS6231879B2 (en) | ||
JPH10117396A (en) | Speaker | |
JP4088983B2 (en) | Speaker | |
JP3132253B2 (en) | Edge for speaker | |
CN203027474U (en) | Moving-coil loudspeaker | |
JP3168784B2 (en) | Speaker frame | |
JPS61101196A (en) | Slender type flat speaker | |
JPH06315194A (en) | Speaker | |
CN214544762U (en) | Loudspeaker module | |
CN211959518U (en) | Vibrating diaphragm and sound production device | |
JPH1042392A (en) | Speaker | |
JP3600982B2 (en) | Suspension structure for electroacoustic conversion and electroacoustic conversion device | |
JPS61144200A (en) | Speaker | |
JP2940236B2 (en) | Speaker unit | |
JP3002687U (en) | Speaker | |
JP3187610B2 (en) | Speaker device | |
JPH10341498A (en) | Speaker | |
JPH09139997A (en) | Speaker |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |