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JP2004120517A - Speaker - Google Patents

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Publication number
JP2004120517A
JP2004120517A JP2002282979A JP2002282979A JP2004120517A JP 2004120517 A JP2004120517 A JP 2004120517A JP 2002282979 A JP2002282979 A JP 2002282979A JP 2002282979 A JP2002282979 A JP 2002282979A JP 2004120517 A JP2004120517 A JP 2004120517A
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JP
Japan
Prior art keywords
diaphragm
driver
speaker
present
moving magnet
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
Application number
JP2002282979A
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Japanese (ja)
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JP3905814B2 (en
Inventor
Kazuki Nagoya
名古屋 一樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foster Electric Co Ltd
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Foster Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to JP2002282979A priority Critical patent/JP3905814B2/en
Publication of JP2004120517A publication Critical patent/JP2004120517A/en
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Publication of JP3905814B2 publication Critical patent/JP3905814B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive speaker with excellent sound quality which obtains an excellent frequency characteristic with one driver. <P>SOLUTION: A rectangular diaphragm 1 is molded by being curved in its length direction. Both ends of the diaphragm are pressurized, and a moving magnet type driver 2 is used to perform single point driving of a central part. In this case, the diaphragm 1 is formed in a honeycomb structure, and a pressurizing means is made of a shock absorbing material 5 like rubber or foamed urethane, or a spring. In addition, a driver 2 is formed in a moving magnet structure. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、音響機器用のスピーカに関する。
【0002】
【従来の技術】
スピーカとしては種々のタイプのものが存在するが、このうち例えば特公昭44−23783号や特公昭62−21479号等に示されるように、簡易構成により高域まで再生可能な矩形の平面形の振動板を備えてなるスピーカがある。
【0003】
図8はその一従来例の正面図を示す。図中1’は平面形振動板、2’は平面振動板1’の節の位置にそれぞれ設けられたドライバであり、平面形振動板1’は複数個のドライバ2’による多点駆動方式となっている。
【0004】
振動板が平板であるスピーカにおいては、振動板1’の剛性を持たせるためハニカム構造にするなどして振動させるが、形状剛性が一定のため、その構造により周波数は変わるものの、一次振動において特定の周波数で振動板に節を生じ、振動板1’は一体振動する帯域が狭くなり周波数特性にディップができる。
【0005】
これを改善するために図8に示したように節の部分にドライバ2’を取り付け、多点駆動する構成としていた。
【0006】
図9は多点駆動用のドライバ2’の構成例であり、10’はヨーク、11’はポールピース、12’はマグネット、13’はこれらの部材からなる磁気回路、14’は先端が振動板1’の背面に接続されたボイスコイル、15’は一端がボイスコイル14’に結合され、他端がフレーム16’に取り付けられたダンパである。
【0007】
また、このような構成のドライバ2’に加え、特公昭57−65094号に示されるように、重りをつけて振動板のバランスをとるなどして周波数の平坦化を図るようにしていた。
【0008】
【発明が解決しようとする課題】
このように従来の平板形の振動板を用いたスピーカでは、多点駆動すべく複数のドライバ2’を取り付けたり、あるいは重りをつけるなどしていたため、製造が煩雑で、かつコスト高を招来する、という課題があった。
【0009】
また、中音域において図7(b)に示すように、大きなディップが生じ、音質が良好でない、という課題もあった。すなわち、平板状の有限バッフルを用いた従来例ではその長さにより後面の音が前面へ廻り込み移相が逆のため、バッフルの長さと音の波長の関係でディップを生じ、良好な音質を得ることができなかった。
【0010】
この発明は上記のことに鑑み提案されたもので、その目的とするところは、一つのドライバで、優れた周波数特性を得ることができ、かつ音質が良好で小型化をも図ることができる安価なスピーカを提供することにある。
【0011】
【課題を解決するための手段】
この発明は、矩形の振動板1を有するスピーカにおいて、前記振動板1をその長さ方向に沿って湾曲形成し、その両端部を加圧手段を介して更に曲げ方向に加圧しながら支持し、かつ前記振動板1のほぼ中心部にドライバ2を取り付け駆動する構成とすることにより、上記目的を達成している。
【0012】
また、前記振動板1はハニカム構造からなり、かつ前記加圧手段は、ゴムもしくは発泡ウレタンの如き緩衝材5またはスプリングからなることを特徴とする。
【0013】
また、前記ドライバ2はムービングマグネット構造からなることを特徴とする。
【0014】
【発明の実施の形態】
以下、図面に沿って本発明を説明する。
【0015】
【実施例】
図1は本発明の一実施例の要部構成を示す。図2は本発明の振動板の斜視図を示す。図中1は振動板であり、この振動板1は軽量化と剛性を持たせるために、クラフト紙等をハニカム構造にしたもの、あるいは発泡スチロール、バルサ材等が用いられ、かつ成形時に弧状になるように大きな曲率でもって湾曲して形成されている。
【0016】
振動板1は横長の矩形状をなし、その長さ方向に沿って湾曲形成され、かつその背面のほぼ中心点にムービングマグネット型のドライバ2が一つ設けられている。
【0017】
また、振動板1の両端部は支持部3により、緩衝材5を介して常に一定の圧力を掛けた状態で支持されている。
【0018】
図3は支持部3の構成例を示す。この支持部3は断面ほぼコ字状のホルダー4を有している。ホルダー4は互いに離間して対向配置された一対のアーム4aと、この一対のアーム4aの外端部に設けられた連結部4bとを備えている。一対のアーム4a間に振動板1の外端部が収納され、支持される。
【0019】
一対のアーム4a間内には、例えばゴムのような弾性部材からなる緩衝材5が設けられ、振動板1の外端部はこの緩衝材5に当接される。当接状態は直接でも良く、あるいはスペーサを介し間接的であっても良い。
【0020】
また、一対のアーム4a間内であって、緩衝材5の外側には板状の加圧器6が設けられている。
【0021】
さらに、連結部4bのほぼ中央部には進退自在に加圧用のねじ7が螺設され、ねじ7の先端は加圧器6の外面に当接され、外側から適宜ねじ7を締め込んだり、あるいは戻すことにより加圧器6への加圧状態を任意に調整できるように構成されている。
【0022】
このように本発明の振動板1は、両端部を緩衝材5、加圧器6、ねじ7等を介して更に湾曲方向に曲げる力を加えて支持され、この加圧力はねじ7を締め付けたり、緩めたりすることにより容易に調整できるように構成されている。なお、加圧にあたっては両側の加圧力は等しくされる。
【0023】
なお、振動板1の両端から加圧力を付与する部材としては、ゴムのような緩衝材5に代え、発泡ウレタンのような緩衝材でも良く、あるいはスプリング等を用いるようにしても良い。
【0024】
図4は振動板1を支持する支持部3を支持板8上に固定した状態の平面図を示す。支持部8の底部はねじ9を用いてのねじ止め等の適宜の固定手段によって支持板8に固定される。
【0025】
図5は枠状のケース9に図4に示したスピーカユニットを組み込んだ状態の背面図を示す。
【0026】
図6は本発明に用いられるムービングマグネット型のドライバ2の一構成例を示す。
【0027】
このドライバ2は、ヨーク10とポールピース11およびその間に設けられたマグネット12からなる磁気回路13と、この磁気回路13の磁気ギャップ間に一端が配置され、他端が振動板1の背面のほぼ中心部に接着により結合されたボイスコイル14とを備えている。
【0028】
ヨーク10の各側部はダブル構造のダンパ15の一端が結合され、ダンパ15の他端はフレーム16の内壁に取り付けられ、これらによってドライバ2が構成されている。
【0029】
なお、フレーム16の外周部には外側に向かって延びる取り付け用のフランジ16aが形成され、このフランジ16aにはねじ穴が形成され、取り付けねじ17およびスペーサ18を介し振動板1の背面側にセットされたドライバ2を、振動板1前面側から埋め込みナット19を取り付けねじ17の先端に螺設して取り付ける。
【0030】
このように、本発明のドライバ2は、ボイスコイル14を振動板1に接着し、振動板1のボイスコイル14の周辺にフレーム取り付け用のねじ17を埋め込み、フレーム16の取り付け部分だけが振動板1と接触するようにスペーサ18を設けて磁気回路保持機構のフレーム16をねじ止めするボイスコイル14と磁気回路13とのセパレート構造となっている。
【0031】
この構造によれば、ドライバ2の磁気回路13はボイスコイル14と全く接触せずセパレートした形で振動板1にねじ止めされたフレーム16に取り付けられ、機械的強度が大きいため、大型で強力な磁気回路13を使え高能率なスピーカを得ることができる。
【0032】
動作にあたっては、ボイスコイル14に音声信号を加えるとボイスコイル14は振動し、その振動は振動板1に伝達される。
【0033】
本発明の振動板1は長さ方向に沿って湾曲して成形され、その両端は緩衝材5を介して常に一定の圧力を掛け、振動板1は両端から更に湾曲させるような力が加えられているため、振動板1の中心部を駆動すると振動板1は一体運動し、コーン型スピーカでのピストンモーションの動きとなる。
【0034】
このため、図7aに示すように、fから分割振動の始まる中音域まで、平坦な周波数特性となり、1つのドライバ2でも良好な周波数特性を持つ、比較的小型で薄型のスピーカを構成できる。
【0035】
なお、上記実施例において、加圧は湾曲方向に加圧する例について説明したが、逆方向(引っ張り方向)としても同様の作用効果を得ることができる。逆方向とする場合、例えば振動板1の両端部を断面コ字状の部材で挟持し、この部材をねじ7に連結し、ねじ7を外側に移動させ、引張力を与える構成とすれば良い。または、振動板1の両端部に直接または間接的にそれぞれスプリングの一端を取り付け、そのばね力によって引っ張り、負方向に加圧する構成等としても良い。
【0036】
【発明の効果】
以上のように本発明によれば、矩形の振動板1をその長さ方向に沿って湾曲形成し、その両端を加圧状態にて支持し、そのほぼ中心部を駆動するようにしたため、振動板1はピストンモーションの動きとなり、fから中音域まで平坦な周波数特性を有するスピーカを得ることができる。
【0037】
平板状の有限バッフルの場合は、形状寸法が900×1800mmのような大きな板を用いないと低い周波数までの再生ができないが、このシステムは形状寸法が例えば200×300mmという小さな曲面状の板でfから分割振動までの特性を改善でき、小型化を図ることもできる。
【0038】
また、従来のように、周波数特性改善のためにドライバを複数使用せず、1つのドライバ2で駆動するようにしているため、コストを削減することができる。
【0039】
また、振動板1はハニカム構造のため、上記効果に加え軽量、かつ剛性があり、ドライバ2も一つであるので、全体重量も軽減でき、しかも加圧手段は簡易構成のため、コスト高を抑えることができる。
【0040】
また、ドライバ2はムービングマグネット型とし、大型の磁気回路13を使えるようにしたため、高能率なスピーカを得ることができる。
【図面の簡単な説明】
【図1】本発明の一実施例の平面図を示す。
【図2】本発明の一実施例に用いられる振動板の斜視図を示す。
【図3】本発明の一実施例に用いられる振動板の支持部の一構成例を示す。
【図4】本発明の一実施例のスピーカユニットを支持板に取り付けた状態を示す平面図。
【図5】本発明の一実施例のスピーカ装置の背面説明図。
【図6】本発明の一実施例に用いられるムービングマグネット型ドライバの一構成例を示す。
【図7】(a)は本発明の音圧に対する周波数特性、(b)は従来例を示す。
【図8】従来例のスピーカの概略構成を示す。
【図9】従来例で用いられるドライバの構成説明図を示す。
【符号の説明】
1  振動板
2  ドライバ
3  支持部
4  ホルダー
4a アーム
4b 連結部
5  緩衝材
6  加圧器
7  ねじ
8  支持板
9  ケース
10 ヨーク
11 ポールピース
12 マグネット
13 磁気回路
14 ボイスコイル
15 ダンパ
16 フレーム
17 ねじ
18 スペーサ
19 埋め込みナット
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a speaker for audio equipment.
[0002]
[Prior art]
There are various types of loudspeakers. Among them, as shown in, for example, Japanese Patent Publication No. 44-23783 and Japanese Patent Publication No. 62-21479, a rectangular flat type speaker capable of reproducing to a high frequency by a simple configuration is disclosed. There is a speaker provided with a diaphragm.
[0003]
FIG. 8 shows a front view of one conventional example. In the figure, reference numeral 1 'denotes a planar diaphragm, 2' denotes a driver provided at each node of the planar diaphragm 1 ', and the planar diaphragm 1' has a multi-point drive system using a plurality of drivers 2 '. Has become.
[0004]
In the case of a loudspeaker having a flat diaphragm, the diaphragm 1 'is vibrated by, for example, forming a honeycomb structure to have rigidity. However, since the shape rigidity is constant, the frequency varies depending on the structure, but it is specified in the primary vibration. A node is generated in the diaphragm at the frequency of, and the band in which the diaphragm 1 'vibrates integrally is narrowed, and a dip can be formed in the frequency characteristics.
[0005]
In order to improve this, a driver 2 'is attached to a node as shown in FIG. 8 to perform multipoint driving.
[0006]
FIG. 9 shows an example of the configuration of a driver 2 'for multi-point driving, wherein 10' is a yoke, 11 'is a pole piece, 12' is a magnet, 13 'is a magnetic circuit composed of these members, and 14' is a vibrating tip. A voice coil 15 'connected to the back of the plate 1' is a damper having one end connected to the voice coil 14 'and the other end attached to the frame 16'.
[0007]
In addition to the driver 2 'having such a configuration, as shown in Japanese Patent Publication No. 57-65094, the frequency is flattened by, for example, adding a weight to balance the diaphragm.
[0008]
[Problems to be solved by the invention]
As described above, in the speaker using the conventional flat diaphragm, a plurality of drivers 2 'are attached or weighted for multi-point driving, so that the manufacturing is complicated and the cost is increased. , There was a problem.
[0009]
In addition, as shown in FIG. 7B, there is a problem that a large dip occurs in the middle sound range and the sound quality is not good. In other words, in the conventional example using a flat finite baffle, the sound on the rear surface goes to the front surface due to its length and the phase shift is reversed, so a dip occurs due to the relationship between the length of the baffle and the wavelength of the sound, and good sound quality is obtained. I couldn't get it.
[0010]
The present invention has been proposed in view of the above, and it is an object of the present invention to provide an excellent frequency characteristic with a single driver, a good sound quality, and a small size that can be downsized. It is to provide a simple speaker.
[0011]
[Means for Solving the Problems]
The present invention relates to a speaker having a rectangular diaphragm 1, wherein the diaphragm 1 is formed to be curved along its length direction, and both ends thereof are supported while being further pressed in a bending direction via a pressing means, The above object is achieved by a configuration in which the driver 2 is mounted and driven substantially at the center of the diaphragm 1.
[0012]
Further, the vibration plate 1 has a honeycomb structure, and the pressurizing means comprises a cushioning material 5 such as rubber or urethane or a spring.
[0013]
Further, the driver 2 has a moving magnet structure.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings.
[0015]
【Example】
FIG. 1 shows a configuration of a main part of an embodiment of the present invention. FIG. 2 shows a perspective view of the diaphragm of the present invention. In the figure, reference numeral 1 denotes a diaphragm, which is made of kraft paper or the like in a honeycomb structure, or made of styrene foam, balsa material, or the like in order to reduce the weight and provide rigidity, and is formed into an arc shape at the time of molding. It is formed with a large curvature as described above.
[0016]
The diaphragm 1 has a horizontally long rectangular shape, is formed to be curved along its length direction, and one moving magnet type driver 2 is provided substantially at the center of the back surface.
[0017]
Further, both ends of the diaphragm 1 are supported by the support portion 3 through the cushioning material 5 while constantly applying a constant pressure.
[0018]
FIG. 3 shows a configuration example of the support unit 3. The support 3 has a holder 4 having a substantially U-shaped cross section. The holder 4 includes a pair of arms 4a spaced apart and opposed to each other, and a connecting portion 4b provided at an outer end of the pair of arms 4a. The outer end of the diaphragm 1 is housed and supported between the pair of arms 4a.
[0019]
Between the pair of arms 4a, a cushioning member 5 made of an elastic member such as rubber is provided, and the outer end of the diaphragm 1 is in contact with the cushioning member 5. The contact state may be direct or indirect via a spacer.
[0020]
A plate-shaped pressurizer 6 is provided between the pair of arms 4 a and outside the cushioning material 5.
[0021]
Further, a screw 7 for pressurizing is screwed in a substantially central part of the connecting portion 4b so as to be able to advance and retreat, and the tip of the screw 7 is in contact with the outer surface of the pressurizer 6, and the screw 7 is appropriately tightened from the outside, or By returning, the pressurized state of the pressurizer 6 can be adjusted arbitrarily.
[0022]
As described above, the diaphragm 1 of the present invention is supported by applying a force for bending both ends in the bending direction through the cushioning member 5, the pressurizer 6, the screw 7, and the like. This pressing force tightens the screw 7, It is configured to be easily adjusted by loosening. In pressing, the pressing force on both sides is made equal.
[0023]
In addition, as a member for applying a pressing force from both ends of the diaphragm 1, a cushioning material such as urethane foam may be used instead of the cushioning material 5 such as rubber, or a spring or the like may be used.
[0024]
FIG. 4 is a plan view showing a state in which the support portion 3 supporting the diaphragm 1 is fixed on the support plate 8. The bottom of the support portion 8 is fixed to the support plate 8 by an appropriate fixing means such as screwing using a screw 9.
[0025]
FIG. 5 is a rear view showing a state where the speaker unit shown in FIG.
[0026]
FIG. 6 shows a configuration example of a moving magnet type driver 2 used in the present invention.
[0027]
The driver 2 has a magnetic circuit 13 composed of a yoke 10, a pole piece 11 and a magnet 12 provided between the yoke 10 and a magnetic gap of the magnetic circuit 13. And a voice coil 14 bonded to the center by bonding.
[0028]
One end of a double-structured damper 15 is connected to each side of the yoke 10, and the other end of the damper 15 is attached to the inner wall of a frame 16, and these constitute the driver 2.
[0029]
A mounting flange 16a extending outward is formed on the outer periphery of the frame 16, and a screw hole is formed in the flange 16a. The flange 16a is set on the rear side of the diaphragm 1 via mounting screws 17 and spacers 18. The mounted driver 2 is mounted by screwing the embedded nut 19 to the tip of the mounting screw 17 from the front side of the diaphragm 1.
[0030]
As described above, the driver 2 of the present invention adheres the voice coil 14 to the diaphragm 1, embeds the frame mounting screw 17 around the voice coil 14 of the diaphragm 1, and sets only the mounting portion of the frame 16 to the diaphragm 1. A spacer 18 is provided so as to be in contact with the magnetic circuit holding mechanism 1, and a separate structure is provided between the voice coil 14 for screwing the frame 16 of the magnetic circuit holding mechanism and the magnetic circuit 13.
[0031]
According to this structure, the magnetic circuit 13 of the driver 2 is attached to the frame 16 which is screwed to the diaphragm 1 in a separated form without any contact with the voice coil 14 and has a large mechanical strength. Using the magnetic circuit 13, a highly efficient speaker can be obtained.
[0032]
In operation, when an audio signal is applied to the voice coil 14, the voice coil 14 vibrates, and the vibration is transmitted to the diaphragm 1.
[0033]
The diaphragm 1 of the present invention is formed to be curved along the length direction, and both ends thereof are constantly applied with a constant pressure via the cushioning material 5. Therefore, when the central portion of the diaphragm 1 is driven, the diaphragm 1 moves integrally, and becomes a piston motion in a cone type speaker.
[0034]
For this reason, as shown in FIG. 7A, the frequency characteristics become flat from f 0 to the mid-range where split vibration starts, and a relatively small and thin loudspeaker having good frequency characteristics even with one driver 2 can be configured.
[0035]
In the above-described embodiment, the example in which the pressure is applied in the bending direction has been described. However, the same operation and effect can be obtained even in the opposite direction (pulling direction). In the case of the opposite direction, for example, both ends of the diaphragm 1 may be sandwiched by members having a U-shaped cross section, this member may be connected to the screw 7, the screw 7 may be moved outward, and a tensile force may be applied. . Alternatively, one end of each spring may be directly or indirectly attached to both ends of the diaphragm 1, and the spring may be pulled by the spring force to apply a pressure in the negative direction.
[0036]
【The invention's effect】
As described above, according to the present invention, the rectangular diaphragm 1 is formed to be curved along its length direction, both ends thereof are supported in a pressurized state, and the substantially central portion thereof is driven. plate 1 becomes a movement of the piston motion, it is possible to obtain a speaker having a flat frequency characteristic to midrange from f 0.
[0037]
In the case of a plate-shaped finite baffle, reproduction to a low frequency cannot be performed unless a large plate having a shape size of 900 × 1800 mm is used, but this system uses a small curved plate having a shape size of, for example, 200 × 300 mm. can improve the properties of the f 0 to divided vibration can also be miniaturized.
[0038]
Further, unlike the related art, a plurality of drivers are not used to improve the frequency characteristics, and the driver is driven by one driver 2, so that the cost can be reduced.
[0039]
Further, since the diaphragm 1 has a honeycomb structure, it has light weight and rigidity in addition to the above effects, and the number of the driver 2 is one, so that the overall weight can be reduced. Can be suppressed.
[0040]
Further, since the driver 2 is of a moving magnet type and a large magnetic circuit 13 can be used, a highly efficient speaker can be obtained.
[Brief description of the drawings]
FIG. 1 shows a plan view of one embodiment of the present invention.
FIG. 2 is a perspective view of a diaphragm used in one embodiment of the present invention.
FIG. 3 shows an example of a configuration of a supporting portion of a diaphragm used in an embodiment of the present invention.
FIG. 4 is a plan view showing a state in which the speaker unit according to one embodiment of the present invention is mounted on a support plate.
FIG. 5 is an explanatory rear view of the speaker device according to the embodiment of the present invention;
FIG. 6 shows a configuration example of a moving magnet type driver used in one embodiment of the present invention.
7A shows a frequency characteristic with respect to a sound pressure according to the present invention, and FIG. 7B shows a conventional example.
FIG. 8 shows a schematic configuration of a conventional speaker.
FIG. 9 is a diagram illustrating a configuration of a driver used in a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Diaphragm 2 Driver 3 Support part 4 Holder 4a Arm 4b Connection part 5 Buffer material 6 Pressurizer 7 Screw 8 Support plate 9 Case 10 Yoke 11 Pole piece 12 Magnet 13 Magnetic circuit 14 Voice coil 15 Damper 16 Frame 17 Screw 18 Spacer 19 Embedded nut

Claims (3)

矩形の振動板(1)を有するスピーカにおいて、
前記振動板(1)をその長さ方向に沿って湾曲形成し、その両端部を加圧手段を介して更に曲げ方向に加圧しながら支持し、かつ前記振動板(1)のほぼ中心部にドライバ(2)を取り付け駆動することを特徴とするスピーカ。
In a speaker having a rectangular diaphragm (1),
The vibrating plate (1) is formed in a curved shape along its length direction, and both ends thereof are supported while being further pressed in a bending direction via a pressing means, and at substantially the center of the vibrating plate (1). A speaker to which a driver (2) is attached and driven.
請求項1記載において、前記振動板(1)はハニカム構造からなり、かつ前記加圧手段は、ゴムもしくは発泡ウレタンの如き緩衝材(5)またはスプリングからなることを特徴とするスピーカ。2. A speaker according to claim 1, wherein said diaphragm (1) has a honeycomb structure, and said pressing means comprises a cushioning material (5) such as rubber or urethane or a spring. 請求項1記載において、前記ドライバ(2)はムービングマグネット構造からなることを特徴とするスピーカ。The speaker according to claim 1, wherein the driver (2) has a moving magnet structure.
JP2002282979A 2002-09-27 2002-09-27 Speaker Expired - Fee Related JP3905814B2 (en)

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JP2009027665A (en) * 2007-07-24 2009-02-05 Sony Corp Vibration member and sound output apparatus
DE102008059312A1 (en) * 2008-11-27 2010-06-02 Weiss, Tobias Electro acoustic transducer i.e. bending wave transducer, for use as flat loud speakers, has acoustic diaphragm designed as rigid, rectangular plate body that is supported in area of two outer edges, and bracket designed as absorption parts
JP2010171927A (en) * 2008-12-22 2010-08-05 Yoshiyasu Muto Speaker diaphragm, and speaker employing the same
KR101242855B1 (en) * 2008-12-22 2013-03-12 교세라 케미카르 가부시키가이샤 Diaphragm for speaker and speaker using it
JP2014233063A (en) * 2013-06-28 2014-12-11 有限会社ZenTec Piezoelectric speaker structure
DE102014219630A1 (en) * 2014-09-26 2016-03-31 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic transducer
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JP2009027665A (en) * 2007-07-24 2009-02-05 Sony Corp Vibration member and sound output apparatus
DE102008059312A1 (en) * 2008-11-27 2010-06-02 Weiss, Tobias Electro acoustic transducer i.e. bending wave transducer, for use as flat loud speakers, has acoustic diaphragm designed as rigid, rectangular plate body that is supported in area of two outer edges, and bracket designed as absorption parts
JP2010171927A (en) * 2008-12-22 2010-08-05 Yoshiyasu Muto Speaker diaphragm, and speaker employing the same
KR101159037B1 (en) 2008-12-22 2012-06-22 교세라 케미카르 가부시키가이샤 Diaphragm for speaker and speaker using it
KR101242855B1 (en) * 2008-12-22 2013-03-12 교세라 케미카르 가부시키가이샤 Diaphragm for speaker and speaker using it
JP2014233063A (en) * 2013-06-28 2014-12-11 有限会社ZenTec Piezoelectric speaker structure
DE102014219630A1 (en) * 2014-09-26 2016-03-31 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic transducer
WO2016046412A1 (en) 2014-09-26 2016-03-31 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic sound transducer
US10136224B2 (en) 2014-09-26 2018-11-20 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic sound transducer
JP6206994B1 (en) * 2016-07-06 2017-10-04 篤志 倉田 Speaker device
JP2018007139A (en) * 2016-07-06 2018-01-11 篤志 倉田 Speaker device
WO2018181626A1 (en) * 2017-03-29 2018-10-04 Agc株式会社 Glass plate component
CN110521217A (en) * 2017-03-29 2019-11-29 Agc株式会社 Glass-plate structure body
JPWO2018181626A1 (en) * 2017-03-29 2020-02-13 Agc株式会社 Glass plate structure
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