JP2006129106A - Speaker - Google Patents

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JP2006129106A
JP2006129106A JP2004315051A JP2004315051A JP2006129106A JP 2006129106 A JP2006129106 A JP 2006129106A JP 2004315051 A JP2004315051 A JP 2004315051A JP 2004315051 A JP2004315051 A JP 2004315051A JP 2006129106 A JP2006129106 A JP 2006129106A
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diaphragm
frame
speaker
damper
shape
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JP4694176B2 (en
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Yuji Shinagawa
裕司 品川
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Foster Electric Co Ltd
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Foster Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thinned speaker in which the driving force of a vibration plate is improved, and which can be used as a sub-woofer. <P>SOLUTION: The speaker includes a plate-like frame 1, a vibration plate 5 which is provided at the back surface of this frame 1 with a slender shape as seen from a front surface and formed substantially in a conical shape, and which is supported by a damper 4; a plurality of magnetic circuits 9 provided at the front surface side of this vibration plate 5, and mounted on the back surface side of the frame 1, and a plurality of voice coils 8 arranged at the magnetic gap part of these magnetic circuits 9, and provided in the lengthwise direction of the vibration plate 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は薄型のスピーカに関する。   The present invention relates to a thin speaker.

薄型化された装置にスピーカを組み込む場合、このスピーカにも薄型のものが要求される。特に、この装置が液晶パネルなどを用いた薄型テレビジョンである場合、薄型テレビジョンの厚さも必然的に薄くなる。こうした薄型の装置にスピーカを組み込む場合、特に厚みの薄いスピーカが必要である。こうした薄型のスピーカとして、振動板の前面側に磁気回路を配置した構造のものがある（特許文献１）。
特開昭６２−１３６１９６号公報 When a speaker is incorporated in a thinned device, the speaker is also required to be thin. In particular, when this apparatus is a thin television using a liquid crystal panel or the like, the thickness of the thin television is inevitably reduced. When a speaker is incorporated into such a thin device, a thin speaker is particularly required. As such a thin speaker, there is one having a structure in which a magnetic circuit is arranged on the front side of a diaphragm (Patent Document 1).
JP-A-62-136196

従来のスピーカには、次の課題がある。すなわち、特許文献１に記載されたスピーカでは、図７に示すように、第１のフレーム１０１を振動板１１０の前面側に設け、この第１のフレーム１０１に磁気回路１２０を取り付けている。また、振動板１１０の後面側に凹状をなす別体の第２のフレーム１０２を設け、この第２のフレーム１０２にダンパ１３０を取り付けている。そして、第２のフレーム１０２を第１のフレーム１０１に固定している。また、従来のスピーカでは、ボイスコイル１４０に振動板１１０とダンパ１３０とを取り付けている。   Conventional speakers have the following problems. That is, in the speaker described in Patent Document 1, as shown in FIG. 7, the first frame 101 is provided on the front side of the diaphragm 110, and the magnetic circuit 120 is attached to the first frame 101. A separate second frame 102 having a concave shape is provided on the rear surface side of the diaphragm 110, and a damper 130 is attached to the second frame 102. The second frame 102 is fixed to the first frame 101. In the conventional speaker, the diaphragm 110 and the damper 130 are attached to the voice coil 140.

こうした構造により、従来のスピーカでは、振動板１１０の振幅による振動板１１０と磁気回路１２０のヨーク１２１との接触を避けるために、距離ａを大きくする必要がある。また、ボイスコイル１４０に振動板１１０とダンパ１３０とを固定するために、厚みｂが必要になる。したがって、従来のスピーカでは、距離ａを大きくし、また厚みｂが必要であるので、これらの分だけスピーカが厚くなってしまう。   With such a structure, the conventional speaker needs to increase the distance a in order to avoid contact between the diaphragm 110 and the yoke 121 of the magnetic circuit 120 due to the amplitude of the diaphragm 110. Further, in order to fix the diaphragm 110 and the damper 130 to the voice coil 140, a thickness b is required. Therefore, in the conventional speaker, since the distance a is increased and the thickness b is required, the speaker becomes thicker by these amounts.

また、従来のスピーカには、２つのフレーム（第１および第２のフレーム１０１、１０２）が必要であり、部品点数が多く、製造工程が複雑になる。さらに、従来のスピーカでは、ターミナル１５０を第２のフレーム１０２の側面に取り付けているため、ダンパ１３０が接近しているが、スピーカの薄型化のためにターミナル１５０を伸ばすことができず、半田付けの製造工程が容易ではない。   In addition, the conventional speaker requires two frames (first and second frames 101 and 102), which requires a large number of parts and a complicated manufacturing process. Further, in the conventional speaker, since the terminal 150 is attached to the side surface of the second frame 102, the damper 130 is approaching, but the terminal 150 cannot be extended to make the speaker thin, and soldering is performed. The manufacturing process is not easy.

この欠点を解決すべく、薄型化を図り、部品点数を減らし、かつ製造工程を簡単化したスピーカが、先に本願出願人によって特願２００４−１６４５４２として提出された。   In order to solve this drawback, a speaker having a reduced thickness, a reduced number of parts, and a simplified manufacturing process was previously filed as Japanese Patent Application No. 2004-164542 by the present applicant.

このスピーカは、ダンパを振動板に取り付け、振動板にボイスコイルを取り付け、ボイスコイルに対するダンパの取り付け分だけ、スピーカの形状を薄型にしている。また、ダンパに立ち上がり部を設け、この立ち上がり部を、ガスケットを介してフレームに取り付け、従来の２つのフレームを一つにし、部品点数を減らしている。さらに、ヨークの先端に対向する振動板の部分に振動板振動時にヨークと接触しないよう逃げ部分を設け、振幅距離と再生帯域とを確保しながら、スピーカを薄型にしている。   In this speaker, a damper is attached to a diaphragm, a voice coil is attached to the diaphragm, and the shape of the speaker is made thin by the amount of the damper attached to the voice coil. In addition, a rising portion is provided in the damper, and this rising portion is attached to the frame via a gasket so that two conventional frames are combined into one to reduce the number of parts. Furthermore, a relief portion is provided in the portion of the diaphragm facing the tip of the yoke so as not to come into contact with the yoke during vibration of the diaphragm, and the speaker is made thin while ensuring an amplitude distance and a reproduction band.

しかしながら、このスピーカは振動板の中央部に設けた一つの磁気回路によって振動板を駆動する構成であるため、サブウーハとして用いるには駆動力が弱く不向きであるなどの課題がある。   However, this speaker has a configuration in which the diaphragm is driven by a single magnetic circuit provided at the center of the diaphragm, and thus there is a problem that the driving force is weak and unsuitable for use as a subwoofer.

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、薄型化を図ったことに加え、振動板の駆動力を高め、サブウーハとしても利用可能とした高耐入力型のスピーカを提供することを目的とするものである。   The present invention has been proposed in view of the above, and the object of the invention is to increase the driving force of the diaphragm in addition to reducing the thickness, and to be used as a subwoofer. The object is to provide a speaker.

前記課題を解決するために請求項１の発明は、板状のフレーム１と、このフレーム１の背面側に設けられ、正面視形状が細長く、ほぼ円錐形状をなし、ダンパ４によって支持された振動板５と、この振動板５の前面側に設けられ、前記フレーム１の背面側に取り付けられた複数個の磁気回路９と、これらの磁気回路９の磁気ギャップ部分に配置され、前記振動板５の長さ方向に設けられた複数個のボイスコイル８とを備えた構成としている。
請求項２の発明は、請求項１記載のスピーカにおいて、コルゲーションが形成されたダンパ本体４ａの正面視形状は前記振動板５の正面視形状とほぼ対応して細長い形状をなし、その内周部は、複数個のボイスコイル８によって駆動される前記振動板５のほぼ円錐状をなす振動板本体５ｂの内周側背面に取り付けられ、かつ前記ダンパ本体４ａの外周部は前方に向って延びる立ち上がり部４ｂが形成され、前記振動板５の外周部は、前記立ち上がり部４ｂの前端部と、前記フレーム１の外周部に形成された第１の凹部１ｃ内に前端部２ａが収納され取り付けられたガスケット２の後端部２ｂとによって挟持・支持したことを特徴としている。
請求項３の発明は、請求項１記載のスピーカにおいて、前記振動板本体５ｂの内周部側を、振動板振動時に前記磁気回路９のヨーク周壁後端部との接触を避けるテーパ状または平坦形状の逃げ部を形成したことを特徴とする。 In order to solve the above-mentioned problem, the invention of claim 1 includes a plate-like frame 1 and a vibration provided on the back side of the frame 1 and having an elongated front view and a substantially conical shape and supported by a damper 4. A plate 5, a plurality of magnetic circuits 9 provided on the front side of the diaphragm 5 and attached to the back side of the frame 1, and disposed in a magnetic gap portion of these magnetic circuits 9, the diaphragm 5 And a plurality of voice coils 8 provided in the length direction.
According to a second aspect of the present invention, in the speaker according to the first aspect, the front view shape of the damper main body 4a in which the corrugation is formed has an elongated shape substantially corresponding to the front view shape of the diaphragm 5, and an inner peripheral portion thereof. Is mounted on the inner peripheral rear surface of the diaphragm body 5b having a substantially conical shape of the diaphragm 5 driven by a plurality of voice coils 8, and the outer peripheral portion of the damper body 4a extends forward. 4b is formed, and the outer peripheral portion of the diaphragm 5 is mounted with the front end portion 2a accommodated in the front end portion of the rising portion 4b and the first recess 1c formed in the outer peripheral portion of the frame 1. It is characterized by being sandwiched and supported by the rear end 2b of the gasket 2.
According to a third aspect of the present invention, in the speaker according to the first aspect, the inner peripheral side of the diaphragm main body 5b is tapered or flat so as to avoid contact with the rear end of the yoke peripheral wall of the magnetic circuit 9 when the diaphragm vibrates. A relief portion having a shape is formed.

本発明によれば、フレーム１を板状のもの一つにし、かつダンパ４を振動板５に取り付け、振動板５にボイスコイル８を設け、ボイスコイル８に対するダンパ４の取り付け分だけ、スピーカの形状を薄型にしている。また、振動板本体５ｂの内周部のヨーク周壁対向部分をテーパ状または平坦状の逃げ部を形成し、振幅距離と再生帯域を確保しながら薄型を実現している。さらに、ダンパ４に立ち上がり部４ｂを設け、この立ち上がり部４ｂを、ガスケット２を介してフレーム１に接続するようにし、特許文献１に示される従来の別体のフレームを不要にし、その分、部品点数を削減している。   According to the present invention, the frame 1 is made into one plate-like one, the damper 4 is attached to the diaphragm 5, the voice coil 8 is provided on the diaphragm 5, and the amount of attachment of the damper 4 to the voice coil 8 is equal to that of the speaker. The shape is thin. In addition, a tapered or flat relief portion is formed in the inner peripheral portion of the diaphragm main body 5b facing the yoke peripheral wall, so that a thin shape is realized while ensuring an amplitude distance and a reproduction band. Further, the damper 4 is provided with a rising portion 4b, and the rising portion 4b is connected to the frame 1 via the gasket 2, so that the conventional separate frame shown in Patent Document 1 is unnecessary, and the parts are accordingly increased. The score has been reduced.

また、振動板５の長さ方向に駆動用の複数個のボイスコイル８を設けたため、十分な駆動力を得ることができ、これによって振動板５を駆動できるため、音圧（ＳＰＬ）を高くすることができる。   Further, since a plurality of driving voice coils 8 are provided in the longitudinal direction of the diaphragm 5, a sufficient driving force can be obtained, and the diaphragm 5 can be driven by this, so that the sound pressure (SPL) is increased. can do.

また、最低共振周波数（Ｑ）を低くできるため、サブウーハとして使用可能である。   Further, since the lowest resonance frequency (Q) can be lowered, it can be used as a subwoofer.

また、ボイスコイル８を複数としたため、一つのボイスコイル８にかかるエネルギー（熱）が分散して軽減されるため、高耐入力化ができる。   Further, since a plurality of voice coils 8 are provided, energy (heat) applied to one voice coil 8 is dispersed and reduced, so that high input resistance can be achieved.

また、通常の複数の磁気回路を有するスピーカ（ツインドライブ）はダンパもそれに対応して複数設けられているが、本発明ではダンパ４を一つとしたため、今までのツインドライブタイプで複数設けられていたダンパの変位のバラツキによる動作不良がなく、また、生産工程も簡単になるため、安定した生産が可能である。   In addition, a plurality of ordinary speakers (twin drives) having a plurality of magnetic circuits are provided with a plurality of dampers. However, in the present invention, a single damper 4 is provided, so that a plurality of conventional twin drive types are provided. In addition, there is no malfunction due to variations in the displacement of the damper, and the production process is simplified, so that stable production is possible.

以下、図面に沿って本発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

［実施の形態１］
図１は本発明にかかるスピーカの一実施例の側断面図、図２は同上スピーカの正面図、図３は平面図、図４は図３中Ａ−Ａ線断面図、図５はＢ−Ｂ線断面図を示す。 [Embodiment 1]
1 is a side sectional view of an embodiment of the speaker according to the present invention, FIG. 2 is a front view of the speaker, FIG. 3 is a plan view, FIG. 4 is a sectional view taken along line AA in FIG. B line sectional drawing is shown.

これらの図中１はほぼ板状のフレームで、このフレーム１は、図２の正面図に示すように、外形は横長の長方形状をなし、四隅に取付孔１ａが形成され、また、適形状の音孔１ｂが複数形成されている。背面外周部には、図１，図４および図５に示すように、第１の凹部１ｃが形成されている。   In these drawings, 1 is a substantially plate-like frame. As shown in the front view of FIG. 2, the outer shape of the frame 1 is a horizontally long rectangular shape, and mounting holes 1a are formed at four corners. A plurality of sound holes 1b are formed. As shown in FIGS. 1, 4 and 5, a first recess 1c is formed in the outer periphery of the back surface.

この第１の凹部１ｃは、図２に示すように、長円形、トラック形状またはほぼ矩形等の細長い形状に形成され、この第１の凹部１ｃには、図１，図４および図５に示すように、前面から見ると同形状をなす細長い筒状のガスケット２の前端部２ａが収納され、その前端部２ａが取り付けられている。   As shown in FIG. 2, the first recess 1c is formed in an elongated shape such as an oval, a track shape, or a substantially rectangular shape, and the first recess 1c is shown in FIGS. 1, 4, and 5. Thus, the front end 2a of the elongated cylindrical gasket 2 having the same shape as viewed from the front is accommodated, and the front end 2a is attached.

ガスケット２の後端部２ｂにはエッジ３の外周部、ダンパ４の外周に形成された折曲部４ｃが接着剤を介し取り付けられ、エッジ３の内周部には振動板５の外周部５ａが取り付けられている。   An outer peripheral portion of the edge 3 and a bent portion 4c formed on the outer periphery of the damper 4 are attached to the rear end portion 2b of the gasket 2 via an adhesive, and an outer peripheral portion 5a of the diaphragm 5 is attached to the inner peripheral portion of the edge 3. Is attached.

振動板５は正面から見るとその外形は長円形、トラック形状またはほぼ矩形等の細長い形状をなし、かつ図１に示すように、ほぼ円錐状をなす振動板本体５ｂを有し、その内周部は後方に向ってほぼテーパをなす首部５ｃが形成され、かつ振動板５の底部５ｄは平坦となっている。   When viewed from the front, the diaphragm 5 has an elongated outer shape such as an oval, a track shape, or a substantially rectangular shape, and has a diaphragm body 5b having a substantially conical shape as shown in FIG. The portion is formed with a neck portion 5c that is substantially tapered toward the rear, and the bottom portion 5d of the diaphragm 5 is flat.

なお、前記ダンパ４のコルゲーションが形成されたダンパ本体４ａの平面形状は、図３に示すように振動板５の正面視形状にほぼ対応した形状に形成され、かつダンパ４の外周縁には前方に向って延びる立ち上がり部４ｂが形成され、この立ち上がり部４ｂの外周縁はＬ字状に折曲され、その折曲部４ｃがガスケット２の後端部２ｂ側に対向し、ダンパ４の内周部は、ほぼ円錐状をなす振動板本体５ｂの内周部側背面に取り付けられ、エッジ３の外周部はダンパ４の折曲部４ｃとガスケット２の後端部２ｂ間に挟持・支持されている。   The damper main body 4a in which the corrugation of the damper 4 is formed is formed in a shape substantially corresponding to the front view shape of the diaphragm 5 as shown in FIG. A rising portion 4b extending in the direction of the outer periphery of the gasket 4 is formed. The outer peripheral edge of the rising portion 4b is bent in an L shape, and the bent portion 4c faces the rear end 2b side of the gasket 2 to The portion is attached to the rear surface on the inner peripheral side of the diaphragm body 5b having a substantially conical shape, and the outer peripheral portion of the edge 3 is sandwiched and supported between the bent portion 4c of the damper 4 and the rear end portion 2b of the gasket 2. Yes.

このようにして本発明においては、立体形状をなすダンパ４が振動板５を包持している構成となっている。   Thus, in the present invention, the damper 4 having a three-dimensional shape is configured to hold the diaphragm 5.

振動板５の底部には図１に示すように、振動板５の長さ方向に沿って第１、第２のボイスコイル取付穴５ｅが形成され、これらの取付穴５ｅに円筒状をなす第１、第２のボイスコイルボビン６の外周部が接着剤を介しそれぞれ取り付けられ、振動板５の底部５ｄから背面側に突出した第１、第２のボイスコイルボビン６の後端部には薄い円板状の防塵キャップ７が取り付けられている。   As shown in FIG. 1, first and second voice coil attachment holes 5e are formed in the bottom of the diaphragm 5 along the length direction of the diaphragm 5, and a cylindrical shape is formed in these attachment holes 5e. 1. The outer peripheral part of the 1st, 2nd voice coil bobbin 6 is each attached via the adhesive agent, and a thin disk is attached to the rear end part of the 1st, 2nd voice coil bobbin 6 which protruded from the bottom part 5d of the diaphragm 5 to the back side. A dust-proof cap 7 is attached.

第１、第２のボイスコイルボビン６の前方外周部には、図１に示すように、第１、第２のボイスコイル８が設けられ、各ボイスコイル８はそれぞれ第１、第２の磁気回路９の磁気ギャップに配設されている。   As shown in FIG. 1, first and second voice coils 8 are provided on the front outer periphery of the first and second voice coil bobbins 6, and each voice coil 8 has first and second magnetic circuits, respectively. 9 magnetic gaps.

各磁気回路９は、有底円筒状のヨーク１０と、このヨーク１０内に設けられた短円柱状のマグネット１１と、このマグネット１１の背面上に設けられた円板状のポール１２とを備え、ポール１２の外周面と、これと対向する筒状をなすヨーク周壁１０ｂの内周面間に磁気ギャップが形成され、この部分にボイスコイル８が配設されている。   Each magnetic circuit 9 includes a bottomed cylindrical yoke 10, a short columnar magnet 11 provided in the yoke 10, and a disk-shaped pole 12 provided on the back surface of the magnet 11. A magnetic gap is formed between the outer peripheral surface of the pole 12 and the inner peripheral surface of the cylindrical yoke peripheral wall 10b facing the pole 12, and the voice coil 8 is disposed in this portion.

ヨーク１０の前面側の底部１０ａの外周は、板状のフレーム１の背面中央部に形成された位置決め兼取り付け固定用の凹部１ｄ内に位置され、かつヨーク底部１０ａの中央部はフレーム１の前面側から螺入された取付ネジ１３が螺設され、これによって複数個の磁気回路９がフレーム１に固定されている。なお、取付ネジ１３の頭部１３ａはフレーム１の前面側に形成された凹部１ｅ内に位置し、頭部１３ａの出張りを吸収し、薄型化を図っている。   The outer periphery of the bottom 10a on the front side of the yoke 10 is positioned in a positioning / mounting / fixing recess 1d formed in the center of the back of the plate-like frame 1, and the center of the yoke bottom 10a is the front of the frame 1 A mounting screw 13 screwed in from the side is screwed, whereby a plurality of magnetic circuits 9 are fixed to the frame 1. The head 13a of the mounting screw 13 is located in a recess 1e formed on the front side of the frame 1, and absorbs the protrusion of the head 13a to reduce the thickness.

このように本発明では、スピーカを薄型にするために、まず、フレーム１を一部材とし、かつこのフレーム１をほぼ平坦な板状にし、その背面にガスケット２の前端部２ａを収納して取り付けるための第１の凹部１ｃを形成し、ガスケット２の寸法の一部を第１の凹部１ｃによって吸収している。   Thus, in the present invention, in order to make the speaker thin, first, the frame 1 is made into one member, and the frame 1 is made into a substantially flat plate shape, and the front end portion 2a of the gasket 2 is housed and attached to the back surface thereof. A first recess 1c is formed, and a part of the dimension of the gasket 2 is absorbed by the first recess 1c.

なお、ヨーク１０の一部もフレーム１の背面に形成した凹部１ｄに収納し、また、フレーム１の前面側にも取付ネジ頭部収納用の凹部１ｅを形成し、この凹部１ｅのほぼ中央部に形成したネジ穴に取付ネジ１３を挿入し、この取付ネジ１３をヨーク底部１０ａに形成したネジ穴に螺設して磁気回路９を固定している。   A part of the yoke 10 is also housed in a recess 1d formed on the back surface of the frame 1, and a recess 1e for housing the mounting screw head is formed on the front surface side of the frame 1, and a substantially central portion of the recess 1e is formed. The mounting screw 13 is inserted into the screw hole formed in the above, and the mounting screw 13 is screwed into the screw hole formed in the yoke bottom portion 10a to fix the magnetic circuit 9.

特許文献１における従来例ではフレームは、前述のように、振動板の前面に設けられ、磁気回路取り付け用の第１のフレームと、ボイスコイル、ダンパ、振動板等の振動系を支持する第２のフレームの２部材からなり、しかも第１、第２のフレームはそれぞれ立体的な形状をなしていたため、厚みが生じていたが、本発明ではフレーム１を板状の一部材にし、その背面に磁気回路９を取り付け、ダンパ４を立体形状にし、その内周部に、長さ方向に複数設けられたボイスコイル８を設けた振動板５を取り付けるとともに、ダンパ４の外周側に前面に向かって延びる立ち上がり部４ｂを形成し、その前端部とガスケット２とによって振動板５の外周部５ａに設けたエッジ３を支持するようにし、一つのダンパ４によって複数のボイスコイル８により駆動される振動板５を支持するようにしている。   In the conventional example in Patent Document 1, as described above, the frame is provided on the front surface of the diaphragm, and the first frame for attaching the magnetic circuit and the second system that supports the vibration system such as the voice coil, the damper, and the diaphragm. However, in the present invention, the frame 1 is formed as a plate-like member on the back surface of the first and second frames. A magnetic circuit 9 is attached, the damper 4 is made into a three-dimensional shape, and a diaphragm 5 provided with a plurality of voice coils 8 provided in the length direction is attached to the inner periphery of the damper 4. A rising portion 4b extending is formed, and an edge 3 provided on the outer peripheral portion 5a of the diaphragm 5 is supported by the front end portion and the gasket 2, and a plurality of voice coils 8 are formed by one damper 4. Ri is adapted to support the vibrating plate 5 to be driven.

また、振動板５が前方へ振動した際、ヨーク１０の周壁後端部と接触しないよう振動板５の首部５ｃを後方に向って延びるテーパ状にし、逃げ部を形成し、振幅距離を確保している。   Further, when the vibration plate 5 vibrates forward, the neck portion 5c of the vibration plate 5 is tapered so as not to come into contact with the rear end portion of the peripheral wall of the yoke 10, thereby forming a relief portion to ensure an amplitude distance. ing.

この逃げ部はテーパ状の形状に代え図６に示すように振動板５の底部５ｄを外側に延設し、平坦状の形状としても良い。   Instead of the tapered shape, the relief portion may have a flat shape by extending the bottom portion 5d of the diaphragm 5 to the outside as shown in FIG.

なお、その他図３において、符号ａ、ｂは錦糸線、ｃはボイスコイルのリード線、ｄは振動板の形状を表す線である。   In FIG. 3, reference numerals a and b are tinsel wires, c is a voice coil lead wire, and d is a line representing the shape of the diaphragm.

動作にあたっては、複数個のボイスコイル８に音声信号を入力することによってボイスコイル８を介し振動板５が駆動される。この場合、ボイスコイル８は複数のため、一つの場合に比べ駆動力はアップする。なお、ボイスコイル８の引出線（図示せず）は振動板本体５ｂに沿って外周部側に引き出され、端子板（図示せず）に接続され、端子板を介し入力信号が加えられるが、これらの構造は本発明の要旨とは関係ないため、省略する。   In operation, the diaphragm 5 is driven via the voice coil 8 by inputting voice signals to the plurality of voice coils 8. In this case, since the voice coil 8 is plural, the driving force is increased as compared with the case of one. Note that a lead wire (not shown) of the voice coil 8 is drawn to the outer peripheral side along the diaphragm body 5b, connected to a terminal plate (not shown), and an input signal is applied via the terminal plate. Since these structures are not related to the gist of the present invention, they are omitted.

振動板５が振動する場合、本発明では振動板５は複数個のボイスコイル８によって高い駆動力によって駆動することができるため、音圧を向上させることができる。また、従来のツインドライブタイプのスピーカではダンパも複数設けられていたが、本発明では振動板５を支持するダンパ４は一つのため、ダンパ変位のバラツキはない。   When the diaphragm 5 vibrates, in the present invention, the diaphragm 5 can be driven by a plurality of voice coils 8 with a high driving force, so that the sound pressure can be improved. In addition, in the conventional twin drive type speaker, a plurality of dampers are provided. However, in the present invention, since the damper 4 supporting the diaphragm 5 is one, there is no variation in the damper displacement.

なお、上記実施例では、振動板５とエッジ３とは別体構造となっているが、一体構造としても良く、また、図示例ではフレーム１は矩形となっているが、長円形、トラック形状としても良い。このように具体的な構成は図示の実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。   In the above-described embodiment, the diaphragm 5 and the edge 3 have a separate structure, but may be integrated. In the illustrated example, the frame 1 has a rectangular shape, but is oval or track-shaped. It is also good. As described above, the specific configuration is not limited to the illustrated embodiment, and any design change or the like within a range not departing from the gist of the present invention is included in the present invention.

本発明の一実施例の側断面図を示す。1 shows a side sectional view of one embodiment of the present invention. 同上の実施例の正面図を示す。The front view of an Example same as the above is shown. 同上の実施例の平面図を示す。The top view of an Example same as the above is shown. 図３中Ａ−Ａ線断面図を示す。AA line sectional view in FIG. 3 is shown. 図３中Ｂ−Ｂ線断面図を示す。A sectional view taken along line BB in FIG. 3 is shown. 本発明の他の実施例の部分断面図を示す。FIG. 3 shows a partial cross-sectional view of another embodiment of the present invention. 従来例の側断面図を示す。The sectional side view of a prior art example is shown.

符号の説明Explanation of symbols

１ フレーム
１ａ 取付孔
１ｂ 音孔
１ｃ 第１の凹部
１ｄ ヨーク位置決め兼取り付け用凹部
１ｅ 取付ネジ頭部収納用の凹部
２ ガスケット
２ａ ガスケット前端部
２ｂ ガスケット後端部
３ エッジ
４ ダンパ
４ａ ダンパ本体
４ｂ 立ち上がり部
４ｃ ダンパ外周の折曲部
５ 振動板
５ａ 振動板外周部
５ｂ 振動板本体
５ｃ 振動板の首部
５ｄ 振動板の底部
５ｅ 取付穴
６ 第１、第２のボイスコイルボビン
７ 防塵キャップ
８ ボイスコイル
９ 磁気回路
１０ ヨーク
１０ａ ヨーク底部
１０ｂ ヨーク周壁
１１ マグネット
１２ ポール
１３ 取付ネジ
１３ａ 頭部 DESCRIPTION OF SYMBOLS 1 Frame 1a Mounting hole 1b Sound hole 1c 1st recessed part 1d Recessed part for yoke positioning and attaching 1e Recessed part for mounting screw head storage 2 Gasket 2a Gasket front end part 2b Gasket rear end part 3 Edge 4 Damper 4a Damper main body 4b Standing part 4c Folding part 5 of damper outer periphery 5 Diaphragm 5a Diaphragm outer peripheral part 5b Diaphragm body 5c Diaphragm neck 5d Diaphragm bottom 5e Mounting hole 6 First and second voice coil bobbin 7 Dustproof cap 8 Voice coil 9 Magnetic circuit 10 Yoke 10a Yoke bottom 10b Yoke peripheral wall 11 Magnet 12 Pole 13 Mounting screw 13a Head

Claims (3)

板状のフレーム（１）と、このフレーム（１）の背面側に設けられ、正面視形状が細長く、ほぼ円錐形状をなし、ダンパ（４）によって支持された振動板（５）と、この振動板（５）の前面側に設けられ、前記フレーム（１）の背面側に取り付けられた複数個の磁気回路（９）と、これらの磁気回路（９）の磁気ギャップ部分に配置され、前記振動板（５）の長さ方向に設けられた複数個のボイスコイル（８）とを備えてなることを特徴とするスピーカ。   A plate-shaped frame (1), a diaphragm (5) provided on the back side of the frame (1), having a long and narrow frontal view, substantially conical, and supported by a damper (4), and this vibration A plurality of magnetic circuits (9) provided on the front side of the plate (5) and attached to the back side of the frame (1), and disposed in a magnetic gap portion of these magnetic circuits (9), the vibration A speaker comprising: a plurality of voice coils (8) provided in a length direction of the plate (5). コルゲーションが形成されたダンパ本体（４ａ）の正面視形状は前記振動板（５）の正面視形状とほぼ対応して細長い形状をなし、その内周部は、複数個のボイスコイル（８）によって駆動される前記振動板（５）のほぼ円錐状をなす振動板本体（５ｂ）の内周側背面に取り付けられ、かつ前記ダンパ本体（４ａ）の外周部は前方に向って延びる立ち上がり部（４ｂ）が形成され、前記振動板（５）の外周部は、前記立ち上がり部（４ｂ）の前端部と、前記フレーム（１）の外周部に形成された第１の凹部（１ｃ）内に前端部（２ａ）が収納され取り付けられたガスケット（２）の後端部（２ｂ）とによって挟持・支持されたことを特徴とする請求項１記載のスピーカ。   The front view shape of the damper main body (4a) on which the corrugation is formed has an elongated shape substantially corresponding to the front view shape of the diaphragm (5), and the inner periphery thereof is formed by a plurality of voice coils (8). A rising portion (4b) which is attached to the inner peripheral back surface of the diaphragm main body (5b) having a substantially conical shape of the driven diaphragm (5), and the outer periphery of the damper main body (4a) extends forward. ), And the outer peripheral portion of the diaphragm (5) has a front end portion in a front end portion of the rising portion (4b) and a first recess (1c) formed in the outer peripheral portion of the frame (1). The speaker according to claim 1, wherein the speaker is sandwiched and supported by a rear end (2b) of a gasket (2) in which (2a) is stored and attached. 前記振動板本体（５ｂ）の内周部側を、振動板振動時に前記磁気回路（９）のヨーク周壁後端部との接触を避けるテーパ状または平坦形状の逃げ部を形成したことを特徴とする請求項１記載のスピーカ。   The inner periphery of the diaphragm main body (5b) is formed with a tapered or flat relief that avoids contact with the rear end of the yoke peripheral wall of the magnetic circuit (9) during vibration of the diaphragm. The speaker according to claim 1.
JP2004315051A 2004-10-29 2004-10-29 Speaker Active JP4694176B2 (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2011025193A2 (en) * 2009-08-27 2011-03-03 Shin Joung Youl Slimline speaker
KR101101991B1 (en) * 2009-10-15 2012-01-02 비에취어쿠스텔 주식회사 Slim type speaker
JP2012151821A (en) * 2011-01-19 2012-08-09 Tiinlab Audio Technology Ltd Speaker structure
RU2746715C1 (en) * 2020-08-14 2021-04-19 Общество С Ограниченной Ответственностью "Синеморе" Flat low frequency loudspeaker

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JPS54119228A (en) * 1978-03-09 1979-09-17 Seiko Epson Corp Thin type speaker
JPS5788390U (en) * 1980-11-20 1982-05-31
JPS62136196A (en) * 1985-11-15 1987-06-19 ボ−ズ・コ−ポレ−シヨン Small size electric acoustic converter
JPS62241500A (en) * 1986-04-14 1987-10-22 Matsushita Electric Ind Co Ltd Speaker
JPH08205283A (en) * 1995-01-20 1996-08-09 Fujitsu Ten Ltd Thin speaker
JPH10327491A (en) * 1997-05-22 1998-12-08 Kenwood Corp Loudspeaker

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JPS51127030U (en) * 1975-04-09 1976-10-14
JPS54119228A (en) * 1978-03-09 1979-09-17 Seiko Epson Corp Thin type speaker
JPS5788390U (en) * 1980-11-20 1982-05-31
JPS62136196A (en) * 1985-11-15 1987-06-19 ボ−ズ・コ−ポレ−シヨン Small size electric acoustic converter
JPS62241500A (en) * 1986-04-14 1987-10-22 Matsushita Electric Ind Co Ltd Speaker
JPH08205283A (en) * 1995-01-20 1996-08-09 Fujitsu Ten Ltd Thin speaker
JPH10327491A (en) * 1997-05-22 1998-12-08 Kenwood Corp Loudspeaker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011025193A2 (en) * 2009-08-27 2011-03-03 Shin Joung Youl Slimline speaker
WO2011025193A3 (en) * 2009-08-27 2011-06-09 Shin Joung Youl Slimline speaker
KR101062039B1 (en) * 2009-08-27 2011-09-05 신정열 Slim speakers
US8767999B2 (en) 2009-08-27 2014-07-01 Joung Youl Shin Slimline speaker
KR101101991B1 (en) * 2009-10-15 2012-01-02 비에취어쿠스텔 주식회사 Slim type speaker
JP2012151821A (en) * 2011-01-19 2012-08-09 Tiinlab Audio Technology Ltd Speaker structure
RU2746715C1 (en) * 2020-08-14 2021-04-19 Общество С Ограниченной Ответственностью "Синеморе" Flat low frequency loudspeaker

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