JP4728859B2 - Diaphragm for flat speaker - Google Patents

Diaphragm for flat speaker Download PDF

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JP4728859B2
JP4728859B2 JP2006091850A JP2006091850A JP4728859B2 JP 4728859 B2 JP4728859 B2 JP 4728859B2 JP 2006091850 A JP2006091850 A JP 2006091850A JP 2006091850 A JP2006091850 A JP 2006091850A JP 4728859 B2 JP4728859 B2 JP 4728859B2
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diaphragm
flat speaker
voice coil
edge
metal
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JP2007267237A (en
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宏 池田
利光 西脇
秀一 田中
俊哉 樋上
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THE FURUKAW ELECTRIC CO., LTD.
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THE FURUKAW ELECTRIC CO., LTD.
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Description

本発明は、外部回路との接続に錦糸線を用い、該錦糸線とボイスコイルからの引出し線とを金属接合して接続する平面スピーカ用の振動板に関する。   The present invention relates to a diaphragm for a flat speaker in which a tinsel wire is used for connection to an external circuit, and the tinsel wire and a lead wire from a voice coil are connected by metal bonding.

平面スピーカ用振動板の従来例を図３に示す。図３に示す振動板は、特許文献２で開示されたものであり、ボイスコイルを粘着層上に形成するのに、特許文献１で開示された布線技術を用いている。   A conventional example of a flat speaker diaphragm is shown in FIG. The diaphragm shown in FIG. 3 is disclosed in Patent Document 2, and the wiring technique disclosed in Patent Document 1 is used to form the voice coil on the adhesive layer.

特許文献１で開示された布線技術は、少なくとも一方の面に粘着層を有するシート状基材（以下、粘着性シートと称する）の表面に沿って、相対的に移動可能な布線ヘッドを前記粘着性シートの表面上に間欠的に点接触させながら線状導体を繰り出すことで、前記粘着性シートの表面上に前記線状導体を順次貼付けていくという手法である。   The wiring technique disclosed in Patent Document 1 includes a wiring head that is relatively movable along the surface of a sheet-like substrate (hereinafter referred to as an adhesive sheet) having an adhesive layer on at least one surface. This is a technique of sticking the linear conductors sequentially on the surface of the adhesive sheet by drawing out the linear conductors while intermittently making point contacts on the surface of the adhesive sheet.

前記布線技術を用いて前記粘着性シートの粘着層上に渦巻状ボイスコイルを設け、該ボイスコイルを保護する目的で別のシート状基材で覆うように貼付することで振動板を形成している。特許文献２に記載の平面スピーカは、上記のように形成された振動板と、前記ボイスコイルに対向する位置に設けられた磁石とから構成されている。
上記の通り形成された従来の振動板において、前記ボイスコイルを所定の外部回路と接続する方法として、例えば特許文献２に記載の方法が開示されている。前記外部回路と前記ボイスコイルを接続するために、前記ボイスコイルから引出し線が前記粘着層の外側に引き出されている。 A spiral voice coil is provided on the pressure-sensitive adhesive layer of the pressure-sensitive adhesive sheet by using the wiring technique, and a diaphragm is formed by pasting so as to be covered with another sheet-like base material for the purpose of protecting the voice coil. ing. The flat speaker described in Patent Document 2 includes a diaphragm formed as described above and a magnet provided at a position facing the voice coil.
As a method of connecting the voice coil to a predetermined external circuit in the conventional diaphragm formed as described above, for example, a method disclosed in Patent Document 2 is disclosed. In order to connect the external circuit and the voice coil, a lead wire is drawn from the voice coil to the outside of the adhesive layer.

前記引出し線と前記外部回路に接続された外部配線を接続する従来例を図４に示す。引出し線１０１との接続に用いられる前記外部配線には、図４に示すように、通常は錦糸線１０２が用いられている。錦糸線１０２と引出し線１０１との接続として、従来は図４に示すようなループを形成したループ構造の金属接合を実施していた。
特開平１１−２５５８５６号公報 ＷＯ０３／０７３７８７号公報 FIG. 4 shows a conventional example in which the lead wire and the external wiring connected to the external circuit are connected. As the external wiring used for connection to the lead wire 101, a tinsel wire 102 is usually used as shown in FIG. Conventionally, as a connection between the tinsel wire 102 and the lead-out wire 101, metal bonding of a loop structure in which a loop as shown in FIG. 4 is formed has been performed.
JP-A-11-255856 WO03 / 073787

しかしながら、図４に示すような錦糸線１０２と引出し線１０１との接続をループ構造の金属接合で行う従来の方法では、金属接合部１０３に振動板の振動が直接加わってしまうため、金属接合部１０３で断線が多発してしまうといった問題があった。   However, in the conventional method in which the connection between the tinsel wire 102 and the lead wire 101 as shown in FIG. 4 is performed by metal bonding with a loop structure, the vibration of the diaphragm is directly applied to the metal bonding portion 103. There was a problem that disconnection occurred frequently at 103.

すなわち、錦糸線１０２と引出し線１０１との接続をループ構造の金属接合で行わせるようにした場合、金属接合部１０３の固定位置が、振動板をエッジに固定している外周部１０４より内側となってしまうために、スピーカ駆動時に前記振動板の機械振動が金属接合部１０３に直接加わってしまう。その結果、金属接合部１０３での金属疲労等により断線が発生していた。   That is, when the tinsel wire 102 and the lead wire 101 are connected by a loop-structured metal joint, the fixing position of the metal joint portion 103 is on the inner side of the outer peripheral portion 104 that fixes the diaphragm to the edge. Therefore, the mechanical vibration of the diaphragm is directly applied to the metal joint 103 when the speaker is driven. As a result, disconnection occurred due to metal fatigue or the like at the metal joint 103.

そこで、本発明は上記の事情に鑑みてなされたものであり、振動板の振動を直接受けないようにすることで断線を防止した信頼性の高い平面スピーカ用振動板を提供することを目的とするものである。   Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide a highly reliable flat speaker diaphragm that prevents disconnection by not directly receiving vibration of the diaphragm. To do.

本発明の平面スピーカ用振動板の第１の態様は、外周部の全周にわたって設けられたエッジ糊代部が平面スピーカのエッジに接着固定された平面スピーカ用振動板であって、線状導体を巻き回して形成されたボイスコイルを1以上平面状に配列したボイスコイル層と、前記ボイスコイルの両端を前記ボイスコイル層の外部に引き出すための引出し線と、前記ボイスコイル層の一方または両方の面に形成された１層または２層の接着層と、前記１層または２層の接着層の前記ボイスコイル層とは反対側の面に貼り合わされた基材と、を備え、前記引出し線と所定の回路に接続されて前記引出し線より高い強度を有する錦糸線とを各々の端部がともに同じ方向に向くように揃えて前記各々の端部から所定幅だけ金属接合して形成された金属接合部をさらに備え、前記金属接合部が前記エッジ糊代部に固定されていることを特徴とする平面スピーカ用振動板である。 According to a first aspect of the diaphragm for a flat speaker of the present invention, there is provided a flat speaker diaphragm in which an edge adhesive margin provided over the entire circumference of the outer peripheral portion is bonded and fixed to an edge of the flat speaker, One or both of a voice coil layer in which one or more voice coils formed by winding a coil are arranged in a planar shape, a lead wire for pulling out both ends of the voice coil to the outside of the voice coil layer, and the voice coil layer 1 layer or 2 layers of adhesive layer formed on the surface, and a substrate bonded to the surface of the 1 layer or 2 layers of adhesive layer opposite to the voice coil layer, and the lead wire And a tinsel wire connected to a predetermined circuit and having a strength higher than that of the lead-out line are aligned so that both ends are directed in the same direction, and are formed by metal bonding by a predetermined width from each end. Metal joints The flat speaker diaphragm is further provided, wherein the metal joint is fixed to the edge glue margin .

本発明によれば、ボイスコイルからの引出し線と錦糸線との金属接合部を、ループを形成しないループレス構造（以下では、ループレス構造と呼ぶ）とすることで、前記金属接合部をエッジとの接合部である振動板外周部に固着することが可能となる。これにより前記振動板の機械振動が前記金属接合部に直接加わるのを回避することが可能となり、前記金属接合部での断線を防止して信頼性の高い平面スピーカ用振動板を提供することが可能となる。   According to the present invention, the metal joint portion between the lead wire from the voice coil and the tinsel wire has a loopless structure that does not form a loop (hereinafter referred to as a loopless structure), whereby the metal joint portion is connected to the edge. It becomes possible to adhere to the outer peripheral part of the diaphragm which is a joint part. As a result, it is possible to avoid the mechanical vibration of the diaphragm from being directly applied to the metal joint, and to provide a highly reliable planar speaker diaphragm by preventing disconnection at the metal joint. It becomes possible.

図面を参照して本発明の好ましい実施の形態における平面スピーカ用振動板について、以下に詳細に説明する。なお、同一機能を有する各構成部については、図示及び説明簡略化のため、同一符号を付して示す。   A flat speaker diaphragm according to a preferred embodiment of the present invention will be described in detail below with reference to the drawings. In addition, about each structural part which has the same function, the same code | symbol is attached | subjected and shown for simplification of illustration and description.

図１は、本発明の実施の形態に係る平面スピーカ用振動板を備えた平面スピーカを示す模式図である。平面スピーカ１は、本実施形態の平面スピーカ用振動板１０とエッジ２０を備えており、平面スピーカ用振動板１０は外周部がエッジ２０に接着固定されている。   FIG. 1 is a schematic diagram showing a flat speaker provided with a flat speaker diaphragm according to an embodiment of the present invention. The flat speaker 1 includes the flat speaker diaphragm 10 and the edge 20 of the present embodiment, and the flat speaker diaphragm 10 is bonded and fixed to the edge 20 at the outer periphery.

すなわち、平面スピーカ用振動板１０の外周部には、全周に渡ってエッジ糊代部２３が設けられており、エッジ糊代部２３がエッジ２０に接着固定されている。平面スピーカ用振動板１０のエッジ糊代部２３より内側は、平面スピーカ１の駆動時に機械振動する部分である。   In other words, the edge glue margin 23 is provided over the entire circumference of the planar speaker diaphragm 10, and the edge glue margin 23 is bonded and fixed to the edge 20. The portion inside the edge glue margin 23 of the flat speaker diaphragm 10 is a portion that mechanically vibrates when the flat speaker 1 is driven.

平面スピーカ用振動板１０の詳細を図２に示す。平面スピーカ用振動板１０は、渦巻状に形成されたボイスコイル１１と、該ボイスコイル１１を挟んで接着された２層の接着層１２と、接着層１２のボイスコイル層１１とは反対側（外側）に接着された基材１３とから形成されている。   The details of the flat speaker diaphragm 10 are shown in FIG. The flat speaker diaphragm 10 includes a voice coil 11 formed in a spiral shape, a two-layer adhesive layer 12 bonded with the voice coil 11 interposed therebetween, and a side opposite to the voice coil layer 11 of the adhesive layer 12 ( And a base material 13 adhered to the outer side.

平面スピーカ用振動板１０には複数（図２では８個）のボイスコイル１１が形成されており、これらは１本の線状導体を巻き回して形成されている。そして、前記線状導体の両端部は、引出し線１４として平面スピーカ用振動板１０の内部から引き出されている。
平面スピーカ用振動板１０の内部から引き出された引出し線１４は、所定の電気回路と接続させるために、図１に示す錦糸線２１の一端と接続させる必要がある。錦糸線２１は、他端が前記所定の電気回路に接続されており、振動等の外部からの衝撃に対しても断線する恐れを極力低減させたものである。 A plurality of (eight in FIG. 2) voice coils 11 are formed on the flat speaker diaphragm 10, and these are formed by winding a single linear conductor. Then, both ends of the linear conductor are led out from the inside of the flat speaker diaphragm 10 as lead wires 14.
The lead wire 14 drawn from the inside of the flat speaker diaphragm 10 needs to be connected to one end of the tinsel wire 21 shown in FIG. 1 in order to be connected to a predetermined electric circuit. The tinsel wire 21 has the other end connected to the predetermined electric circuit, and reduces the possibility of disconnection against external impacts such as vibration.

本実施形態の平面スピーカ用振動板１０では、図１に示すように、引出し線１４がループレス構造で引出し線１４と錦糸線２１とを金属接合させるようにしている。図１において符号２２で示す箇所が、引出し線１４と錦糸線２１とを金属接合させた金属接合部である。   In the flat speaker diaphragm 10 of the present embodiment, as shown in FIG. 1, the lead wire 14 has a loopless structure, and the lead wire 14 and the tinsel wire 21 are metal-joined. In FIG. 1, a portion indicated by reference numeral 22 is a metal joint portion in which the lead wire 14 and the tinsel wire 21 are metal-joined.

前記ループレス構造の金属接合部２２は、以下のように形成される。図１に示すように、引出し線１４の端部と錦糸線２１の端部とがともに同じ方向に向くように前記両端部を揃え、さらに前記両端部から所定の幅だけ金属接合することにより、金属接合部２２を形成する。   The metal joint 22 having the loopless structure is formed as follows. As shown in FIG. 1, by aligning the both end portions so that both the end portion of the lead wire 14 and the end portion of the tinsel wire 21 are directed in the same direction, and further metal-bonding a predetermined width from the both end portions, Metal joint 22 is formed.

上記のように引出し線１４と錦糸線２１とを金属接合させた場合には、金属接合部２２がエッジ糊代部２３の上に位置するように金属接合部２２を形成することが容易となる。金属接合部２２がエッジ糊代部２３の上に位置するように形成されると、金属接合部２２をエッジ糊代部２３に容易に固定することが可能となる。
エッジ糊代部２３は、本実施形態の平面スピーカ用振動板１０をエッジ２０に固定している部分であり、平面スピーカ１の駆動によって平面スピーカ用振動板１０が振動しているときも、エッジ糊代部２３の振幅量は小さい。その結果、平面スピーカ１の駆動時にも、エッジ糊代部２３に固定された金属接合部２２は平面スピーカ用振動板１０の振動の影響を受ける恐れが少なくなる。 When the lead wire 14 and the tinsel wire 21 are metal-bonded as described above, it is easy to form the metal joint 22 so that the metal joint 22 is positioned on the edge glue margin 23. . When the metal joint portion 22 is formed so as to be positioned on the edge glue margin 23, the metal joint 22 can be easily fixed to the edge glue margin 23.
The edge margin portion 23 is a portion that fixes the planar speaker diaphragm 10 of the present embodiment to the edge 20, and even when the planar speaker diaphragm 10 vibrates by driving the planar speaker 1, The amplitude amount of the margin part 23 is small. As a result, even when the flat speaker 1 is driven, the metal joint portion 22 fixed to the edge glue margin 23 is less likely to be affected by the vibration of the flat speaker diaphragm 10.

上位の通り、本実施形態の平面スピーカ用振動板１０は、引出し線１４と錦糸線２１との金属接合を前記ループレス構造で形成するようにしたことにより、金属接合部２２をエッジ糊代部２３に固定することが可能となっている。その結果、平面スピーカ１の駆動時にも金属接合部２２に平面スピーカ用振動板１０の振動の影響を受けることは少なくなり、金属接合部２２での断線、とくに錦糸線２１より強度の低い引出し線１４の断線の可能性を低減することができる。   As described above, the flat speaker diaphragm 10 according to the present embodiment is configured such that the metal joint between the lead wire 14 and the tinsel wire 21 is formed by the loopless structure, so that the metal joint portion 22 is replaced with the edge glue margin 23. It is possible to fix to. As a result, even when the flat speaker 1 is driven, the metal joint portion 22 is less affected by the vibration of the flat speaker diaphragm 10, and disconnection at the metal joint portion 22, particularly a lead wire having lower strength than the tinsel wire 21. The possibility of disconnection of 14 can be reduced.

このように、金属接合部２２での断線の可能性を低減することで、信頼性の高い平面スピーカ用振動板１０を提供することが可能となる。   Thus, it becomes possible to provide the highly reliable planar speaker diaphragm 10 by reducing the possibility of disconnection at the metal joint portion 22.

図１は、本発明の平面スピーカ用振動板を備えた平面スピーカを示す模式図である。FIG. 1 is a schematic diagram showing a flat speaker provided with the diaphragm for a flat speaker of the present invention. 図２は、平面スピーカ用振動板１０の詳細を示す平面図である。FIG. 2 is a plan view showing details of the flat speaker diaphragm 10. 図３は、従来の平面スピーカ用振動板の例を示す平面図である。FIG. 3 is a plan view showing an example of a conventional diaphragm for a flat speaker. 図４は、引出し線と外部配線を接続する従来例を示す模式図である。FIG. 4 is a schematic diagram showing a conventional example of connecting a lead line and external wiring.

符号の説明Explanation of symbols

１・・・平面スピーカ
１０・・・平面スピーカ用振動板
１１・・・ボイスコイル
１２・・・接着層
１３・・・基材
１４、１０１・・・引出し線
２０・・・エッジ
２１，１０２・・・錦糸線
２２、１０３・・・金属接合部
２３・・・エッジ糊代部
１０４・・・振動板外周部 DESCRIPTION OF SYMBOLS 1 ... Planar speaker 10 ... Diaphragm for flat speakers 11 ... Voice coil 12 ... Adhesive layer 13 ... Base material 14, 101 ... Lead wire 20 ... Edge 21, 102- .... Kinshi wire 22, 103 ... Metal joint 23 ... Edge glue margin 104 ... Diaphragm outer periphery

Claims (1)

外周部の全周にわたって設けられたエッジ糊代部が平面スピーカのエッジに接着固定された平面スピーカ用振動板であって、
線状導体を巻き回して形成されたボイスコイルを1以上平面状に配列したボイスコイル層と、
前記ボイスコイルの両端を前記ボイスコイル層の外部に引き出すための引出し線と、
前記ボイスコイル層の一方または両方の面に形成された１層または２層の接着層と、
前記１層または２層の接着層の前記ボイスコイル層とは反対側の面に貼り合わされた基材と、を備え、
前記引出し線と所定の回路に接続されて前記引出し線より高い強度を有する錦糸線とを各々の端部がともに同じ方向に向くように揃えて前記各々の端部から所定幅だけ金属接合して形成された金属接合部をさらに備え、
前記金属接合部が前記エッジ糊代部に固定されている
ことを特徴とする平面スピーカ用振動板。 An edge glue margin provided over the entire circumference of the outer peripheral portion is a diaphragm for a flat speaker in which the edge of the flat speaker is bonded and fixed,
A voice coil layer in which one or more voice coils formed by winding a linear conductor are arranged in a plane;
A lead wire for pulling out both ends of the voice coil to the outside of the voice coil layer;
One or two adhesive layers formed on one or both sides of the voice coil layer;
And a substrate which is bonded to the surface opposite to the voice coil layer of the adhesive layer of the one or two layers,
The lead wires and the tinsel wires that are connected to a predetermined circuit and have higher strength than the lead wires are aligned so that both ends are directed in the same direction, and are metal-bonded by a predetermined width from the respective ends. further comprising a formed metal junction,
The diaphragm for a flat speaker, wherein the metal joint is fixed to the edge adhesive margin .
JP2006091850A 2006-03-29 2006-03-29 Diaphragm for flat speaker Expired - Fee Related JP4728859B2 (en)

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