JPWO2002101885A1

JPWO2002101885A1 - Connector for electroacoustic component and connection structure thereof

Info

Publication number: JPWO2002101885A1
Application number: JP2003504513A
Authority: JP
Inventors: 青木　和彦; 和彦青木
Original assignee: Shin Etsu Polymer Co Ltd
Current assignee: Shin Etsu Polymer Co Ltd
Priority date: 2001-06-08
Filing date: 2002-05-30
Publication date: 2004-09-30
Also published as: EP1394905A1; EP1394905A8; WO2002101885A1; CN1541433A; KR100598250B1; TWI277736B; CN1331275C; NO20035457D0; EP1394905A4; KR20040007662A

Abstract

電気音響部品１の裏面外周部に部分的に嵌合される絶縁性のホルダ１０と、ホルダ１０に貫通支持されて電気音響部品１の電極に圧接する導電接続子２０とを備える。ホルダ１０を電気音響部品１の電極部２に被覆嵌合する断面略Ｕ字形に形成し、ホルダ１０にポケット孔１１を穿孔する。そして、導電接続子２０を、ホルダ１０のポケット孔１１に嵌合する絶縁性の弾性樹脂体２１と、弾性樹脂体２１の内部高さ方向に埋設されて所定のピッチで配列され、電気音響部品１と回路基板３０の電極間を導通させる複数本の金属細線２２とから構成する。The electroacoustic component 1 includes an insulating holder 10 that is partially fitted to the outer periphery of the back surface, and a conductive connector 20 that is supported by the holder 10 and pressed against an electrode of the electroacoustic component 1. The holder 10 is formed in a substantially U-shaped cross section so as to cover and fit the electrode portion 2 of the electroacoustic component 1, and a pocket hole 11 is formed in the holder 10. Then, the conductive connectors 20 are arranged at a predetermined pitch by being buried in the height direction of the inside of the elastic resin body 21 and the insulating elastic resin body 21 fitted in the pocket hole 11 of the holder 10. 1 and a plurality of fine metal wires 22 for conducting between the electrodes of the circuit board 30.

Description

技術分野
本発明は、携帯電話、携帯端末機（ハンディパーソナル、ＰＤＡ等）で使用されるマイクロホン、スピーカ等からなる電気音響部品と回路基板等からなる電気接合物とを電気的に導通させる電気音響部品用コネクタ及びその接続構造に関するものである。
背景技術
携帯電話の音声通信や確認音発生手段として電気音響部品を使用する場合には、電気音響部品と回路基板とを電気的に導通させるが、この導通の手段としては、従来、ピン端末やリード線によるハンダ付けによる取付方法が用いられる。また近年、携帯電話等の普及が進んで製品の品種が増加し、製品寿命が短くなるにしたがい、電気音響部品の実装方法も見直されているが、その見直しの一つとして、使用設備や製造コストの観点から、安価なバネ端子を使用する方法が検討されている。
以上のように、従来、電気音響部品と回路基板の電極間を電気的に導通させる場合には、ピン端子やリード線によるハンダ付け、安価なバネ端子を使用する方法が用いられるが、これらには以下に示す問題がある。
先ず、回路基板と直接的に接続するハンダ付けの場合には、作業ミス等によりリペアが必要なとき、電気音響部品を再度使用することができないので、効率化を到底図ることができないという問題がある。
また、バネ端子を使用する場合、接続のためにある程度のスペースを確保する必要があるので、近年の携帯電話の小型化や軽量化に対応することが困難である。また、電気音響部品は、その構造上、周囲に振動を否応なく発生させるが、振動が生じるとバネ端子の接続抵抗が不安定化することとなる。さらに、バネ端子は、荷重が繰り返し加えられるので、疲労（へたりともいう）したり、電極の金メッキ部分が削れるおそれが少なくなく、この結果、抵抗値が上昇して安定した接続導通を確保することができなくなる。
このような問題を解決するため、コイルタイプのバネ端子を使用する技術が提案されている。この技術によれば、上記問題をある程度解決することができるものの、バネ端子の疲労等を解消するのは困難である。
本発明は、上記に鑑みなされたもので、リペアが必要な場合でも電気音響部品を再度使用することができ、電気接合物の小型化や軽量化にも対応することができ、しかも、振動に伴う接続抵抗の不安定化、接続子の疲労、不安定な接続等を解消することのできる電気音響部品用コネクタ及びその接続構造を提供することを目的としている。
発明の開示
本発明は上記目的を達成するため成されたものであって、その要旨とするところは、次のとおりである。
まず、本発明の第１の要旨は、電極を備えた電気音響部品に取り付けられる電気音響部品用コネクタであって、
上記電気音響部品に取り付けられる絶縁性のホルダと、このホルダに設けられて該電気音響部品の電極に接触する導電接続子とを含んでなることを特徴とする電気音響部品用コネクタにある。
次に、本発明の第２の要旨は、上記ホルダを上記電気音響部品の電極に嵌まる断面略Ｕ字形又は略角筒形に形成し、上記導電接続子を、上記ホルダに設けられる絶縁性の弾性樹脂体と、この弾性樹脂体の高さ方向に埋められて所定のピッチで並べられ、上記電気音響部品の電極に接触する複数本の導電細線とから構成した前記要旨１記載の電気音響部品用コネクタにある。
また、本発明の第３の要旨は、上記ホルダを上記電気音響部品の電極に被覆又は嵌合状態で嵌まる断面略Ｕ字形又は略角筒形に形成し、このホルダにはポケット孔を設け、上記導電接続子を、上記ホルダのポケット孔に設けられる絶縁性の弾性樹脂体と、この弾性樹脂体の表面に所定のピッチで並べられて上記電気音響部品の電極に接触する複数本の導線細線とから構成した前記要旨１記載の電気音響部品用コネクタにある。
次に、本発明の第４の要旨は、上記ホルダを上記電気音響部品の電極に被覆又は嵌合状態で嵌まる断面略Ｕ字形又は略角筒形に形成し、このホルダにはポケット孔を設け、上記導電接続子を、上記ホルダのポケット孔に設けられる弾性樹脂体とするとともに、この弾性樹脂体を絶縁性エラストマーと導電性エラストマーとを交互に重ねて構成し、この弾性樹脂体の導電性エラストマーを上記電気音響部品の電極に接触させるようにした前記要旨１記載の電気音響部品用コネクタにある。
また、本発明の第５の要旨は、上記導電接続子を、上記電気音響部品の電極に傾いて接触する導電線条材と、この導電線条材の一面に部分的に設けられる弾性の第一の絶縁性エラストマーと、該導電線条材の他面に部分的に設けられる弾性の第二の絶縁性エラストマーとから構成し、該導電線条材の長さ方向の略中心部を基準にして上記第一、第二の絶縁性エラストマーを略点対称に配置するとともに、該導電線条材の露出面と該第一、第二の絶縁性エラストマーとの間に接触面積減少空間をそれぞれ形成し、上記ホルダに該第一、第二の絶縁性エラストマーのいずれか一方を設けた前記要旨１記載の電気音響部品用コネクタにある。
さらに、本発明の第６の要旨は、電極を備えた電気音響部品に取り付けられる絶縁性のホルダと、このホルダに設けられて該電気音響部品の電極に接触する導電接続子とを含んでなる電気音響部品用コネクタにより外周部に電極を備えた上記電気音響部品と電気接合物の電極とを電気的に導通させるようにしたことを特徴とする電気音響部品用コネクタの接続構造にある。
次に、本発明の第７の要旨は、上記ホルダを上記電気音響部品の電極に嵌まる断面略Ｕ字形又は略角筒形に形成し、上記導電接続子を、上記ホルダに設けられる絶縁性の弾性樹脂体と、この弾性樹脂体の高さ方向に埋められて所定のピッチで並べられ、上記電気音響部品の電極に接触する複数本の導電細線とから構成した前記要旨６記載の電気音響部品用コネクタの接続構造にある。
また、本発明の第８の要旨は、上記ホルダを上記電気音響部品の電極に被覆又は嵌合状態で嵌まる断面略Ｕ字形又は略角筒形に形成し、このホルダにはポケット孔を設け、上記導電接続子を、上記ホルダのポケット孔に設けられる絶縁性の弾性樹脂体と、この弾性樹脂体の表面に所定のピッチで並べられて上記電気音響部品の電極に接触する複数本の導電細線とから構成した前記要旨６記載の電気音響部品用コネクタの接続構造にある。
次に、本発明の第９の要旨は、上記ホルダを上記電気音響部品の電極に被覆又は嵌合状態で嵌まる断面略Ｕ字形又は略角筒形に形成し、このホルダにはポケット孔を設け、上記導電接続子を、上記ホルダのポケット孔に設けられる弾性樹脂体とするとともに、この弾性樹脂体を絶縁性エラストマーと導電性エラストマーとを交互に重ねて構成し、この弾性樹脂体の導電性エラストマーを上記電気音響部品の電極に接触させるようにした前記要旨６記載の電気音響部品用コネクタの接続構造にある。
また本発明の第１０の要旨は、上記導電接続子を、上記電気音響部品の電極に傾いて接触する導電線条材と、この導電線条材の一面に部分的に設けられる弾性の第一の絶縁性エラストマーと、該導電線条材の他面に部分的に設けられる弾性の第二の絶縁性エラストマーとから構成し、該導電線条材の長さ方向の略中心部を基準にして上記第一、第二の絶縁性エラストマーを略点対称に配置するとともに、該導電線条材の露出面と該第一、第二の絶縁性エラストマーとの間に接触面積減少空間をそれぞれ形成し、上記ホルダに該第一、第二の絶縁性エラストマーのいずれか一方を設けた前記要旨６記載の電気音響部品用コネクタの接続構造にある。
ここで、本発明における電気音響部品は、ボタン形、円柱形、四角形、四角柱、多角形等のいずれの形状でも良い。この電気音響部品の電極は、平坦な一対の金属板からなるものでも良いが、複数の屈曲した板バネやコイルバネ等からなるものでも良い。この電気音響部品に対するホルダの取り付け態様としては、凹凸等を使用する嵌め合い、位置決めピンを使用する挿入、接着、粘着等があげられる。また、ホルダと導電接続子とは、別々に構成することもできるし、別々に製造した後の組み立てやシリコーンゴム等を用いた一体成形等により一体化することも可能である。
また、ホルダを電気音響部品の電極に被覆又は嵌合状態で嵌まる断面略Ｕ字形又は略角筒形に形成し、このホルダにはポケット孔を設け、導電接続子を、ホルダのポケット孔に設けられる絶縁性の弾性樹脂体と、この弾性樹脂体の高さ方向に埋められて所定のピッチで並べられ、電気音響部品の電極に接触する複数本の導電細線とから構成することもできる。断面略Ｕ字形には、類似のコ字形やＣ字等が含まれる。略中心部には、厳密な意味の中心部と、おおよその意味の中心部が含まれる。略点対称の文言についても同様である。さらに、電気接合物としては、各種の回路基板（例えば、プリント基板、フレキシブル基板、ビルドアップ配線板）、液晶ディスプレイ等が含まれる。
発明を実施するための最良の形態
以下、図面を参照して本発明の好ましい実施形態を説明すると、本実施形態における電気音響部品用コネクタは、図１ないし図９、図１８に示すように、携帯電話を構成する電気音響部品１の裏面外周部における電極部２に被覆又は嵌合される絶縁性のホルダ１０と、このホルダ１０に貫通支持されて下方の電気音響部品１の一対の電極３に圧接する導電接続子２０とを備え、電気音響部品１の一対の電極３と上方の回路基板３０の電極とを圧縮されることにより導通させる。
電気音響部品１は、各種のスピーカ（レシーバを含む）やマイクロホン（例えば、無指向性マイクロホンや指向性マイクロホン等）等からなり、図４の下方向に振動膜を向けた状態で配置される。この電気音響部品１は、図１及び図２に示すように、基本的には低い円柱形あるいは丸いボタン形等に形成され、外周部の一部が半径方向に略矩形に突出形成されて電極部２を形成し、この電極部２の裏面であるパックプレートには、矩形の金属板からなる一対の電極３が所定の間隔をおいて並設されている。
ホルダ１０は、所定の材料を使用して射出成形、押出成形、貼り合わせ、切削等により形成され、図３ないし図５に示すように、電気音響部品１の外周部である電極部２に着脱自在に嵌合係止されている。このホルダ１０の材料としては、汎用プラスチック、耐熱性、寸法安定性、成形性に優れるエンジニアリングプラスチックや各種のエラストマー（例えば、シリコーンゴム）等があげられる。具体的には、ポリプロピレン、塩化ビニル、ポリエチレン、ＡＢＳ樹脂、ポリカーボネート、ガラス繊維入りポリカーボネート、ポリエーテルイミド、ポリアミド、ポリエーテルサルホン、芳香族ポリエステル、液晶ポリマー等が使用される。これらの材料の中でも、加工性やコスト等の観点からポリカーボネートが最適である。
なお、ホルダ１０の材料は、なんらこれらに限定されるものではない。例えば、後述する弾性樹脂体２１やサポート層２３と同様の材料を使用することもできる。
ホルダ１０は、図３、図５ないし図７に示すように、基本的には平面略凸字、断面略Ｕ字、あるいは略角筒形に屈曲形成され、導電接続子用のポケット孔１１が細長い略小判形あるいは矩形に穿孔される。このホルダ１０の下方に伸びる両自由端部には、組み込み性やコスト等を考慮して脱落防止爪１２がそれぞれ内方向に屈曲形成（図６（ａ）参照）され、この脱落防止爪１２が電気音響部品１の電極部２に着脱自在に係合して導電接続子２０の脱落を有効に規制する。
但し、このような構成になんら限定されるものではなく、ホルダ１０の両自由端部を電気音響部品１の電極部２に嵌合して脱落を規制したり、ホルダ１０の両自由端部を角筒形に形成し、電気音響部品１の電極部２に嵌合して脱落を規制するようにしても良い（図６（ｂ）、（ｃ）参照）。
導電接続子２０は、図３、図８、図９に示すように、ホルダ１０のポケット孔１１に着脱自在あるいは固定状態に嵌合する絶縁性の弾性樹脂体２１と、この弾性樹脂体２１の高さ方向に直線的に埋設されて所定のピッチで長手方向に複数列に並べられ、電気音響部品１の一対の電極３に接触する複数本の金属細線２２とから構成される。弾性樹脂体２１は、自重で著しく変形したり、硬化後に塑性変形することのない形状的に安定な所定の材料を使用してブロック体に形成され、両面あるいは片面に同形のサポート層２３が選択的に接着される。
弾性樹脂体２１やサポート層２３の材料としては、天然ゴム、ブタジエン・スチレン、アクリロニトリル・ブタジエン、アクリロニトリル・ブタジエン・スチレン、スチレン・エチレン、エチレン・プロピレン、エチレン・プロピレン・ジエン等の各共重合体ゴム、クロロプレンゴム、シリコーンゴム、ブタジエンゴム、イソプレンゴム、クロロスルホン化ポリエチレンゴム、ポリサルファイドゴム、ブチルゴム、フッ素ゴム、ウレタンゴム、ポリイソブチレンゴム等の合成ゴム類の他、ポリエステルエラストマー等の熱可塑性エラストマー、塑性化塩化ビニル系樹脂、酢酸ビニル樹脂、塩化ビニル・酢酸ビニル共重合体樹脂等があげられる。これらの中でも、時効特性、電気絶縁性、耐熱性、圧縮永久歪み、加工性等に優れる安価なシリコーンゴムが最適である。
なお、ホルダ１０と同一の材料を使用すれば、ホルダ１０と導電接続子２０との一体化に最適である。
シリコーンゴム類としては、通常、ジメチル−、メチルフェニル−、メチルビニル−等の各ポリシロキサン類、シリカのような充填剤を配合して適当なレオロジー特性が付与されたハロゲン化ポリシロキサン類、金属塩類でバルカナイズされ、あるいは硬化されたハロゲン化ポリシロキサン類等があげられる。
複数本の金属細線２２は、電気音響部品１の各電極３に２本以上の金属細線２２が接触するよう配列される。これは、電気音響部品１の各電極３に複数本の金属細線２２が接触すれば、抵抗値が安定し、しかも、応力集中の緩和が期待できるからである。各金属細線２２は、金、銀、金合金、銅、アルミニウム、アルミニウム−ケイ素合金、真鍮、リン青銅、ベリリウム銅、ニッケル、ニッケル−チタン合金、モリブデン、タングステン、ステンレス、鉄、鉄−炭素合金等の材料が使用されたり、必要に応じてこれらの材料に金属メッキ処理が施される。これらの中でも、金系のメッキが施された金属細線２２は、抵抗値や高温高湿下等の環境における腐食等の安定性の観点から好ましい。
さらに、各金属細線２２の径は、３〜５００μｍ、好ましくは１０〜１００μｍの範囲とされる。これは、細過ぎると配列時に断線のおそれがあり、逆に太過ぎると小ピッチが得られないからである。また、各金属細線２２の径を３〜５００μｍ、好ましくは１０〜１００μｍの範囲とすれば、成形性や取り扱いが容易となるからである。
上記構成において、電気音響部品１と回路基板３０とを導通する場合には、電気音響部品１の電極部２にホルダ１０を嵌合被覆し、このホルダ１０のポケット孔１１に導電接続子２０を貫通支持させてその金属細線２２の一端部を電気音響部品１の電極３に接触させるとともに、携帯電話等のケースに組み込み、金属細線２２の他端部に回路基板３０の電極を接触させ、回路基板３０を押圧圧下固定すれば、電気音響部品１と回路基板３０とを確実に導通させることができる（図１８参照）。
なお、電気音響部品１と回路基板３０とを導通する場合、ホルダ１０のポケット孔１１に導電接続子２０を貫通支持させ、電気音響部品１の電極部２にホルダ１０を嵌合被覆し、導電接続子２０の金属細線２２を電気音響部品１の電極３に接触させるようにしても良い。また、ホルダ１０のポケット孔１１に導電接続子２０を貫通支持させる方法については、手作業でも良いし、自動実装装置による自動作業でも良い。さらに、ホルダ１０と導電接続子２０とを別々ではなく、図１０に示すように一体成形して部品点数の削減を図ることも可能である。
上記構成によれば、電気音響部品１と回路基板３０とをハンダ付けで導通するのではないから、例え作業ミス等によりリペアが必要となった場合でも、電気音響部品１を再度使用することができ、これにより作業等の著しい効率化を図ることができる。また、バネ端子を使用するのではなく、細い金属細線２２を使用するので、接続のために所定のスペースをなんら確保する必要がない。したがって、近年の携帯電話等の小型化や軽量化にも十分対応することができる。
また、接続抵抗が不安定化したり、繰り返し荷重に伴い疲労したり、電極の金メッキ部分が剥れるおそれがないので、きわめて安定した接続導通を確保することができる。さらに、コイルタイプのバネ端子を使用するのではないから、疲労等を有効に解消することが可能になる。さらにまた、ホルダ１０が、電気音響部品１を嵌合収納するのではなく、電気音響部品１の電極部２のみを嵌合被覆するので、材料の削減と製造コストの低減が大いに期待できる。
次に、図１１は本発明の第２の実施形態を示すもので、この場合には、導電接続子２０を、ホルダ１０のポケット孔１１に着脱自在に嵌合する略半小判形を呈した絶縁性の弾性樹脂体２１と、この弾性樹脂体２１の湾曲した表面に所定のピッチで一列に並設されて電気音響部品１と回路基板３０の電極に圧接する略Ｕ字形を呈した複数本の金属細線２２とから構成し、弾性樹脂体２１の直線的な立面に、図示しない別体のラバー層を選択的に接着するようにしている。
ホルダ１０と導電接続子２０とは、別々ではなく、一体成形することも可能である。また、弾性樹脂体２１の材料は、弾性樹脂体２１やサポート層２３と同様である。その他の部分については、上記実施形態と同様であるので説明を省略する。
本実施形態においても上記実施形態と同様の作用効果が期待でき、しかも、弾性樹脂体２１の高さ方向に金属細線２２を直線的に埋設することができない場合等にきわめて有効である。
次に、図１２は本発明の第３の実施形態を示すもので、この場合には、導電接続子２０をホルダ１０のポケット孔１１に着脱自在に嵌合するブロック形の弾性樹脂体２１とし、この弾性樹脂体２１を、薄板形を呈する弾性の絶縁性エラストマー２５と導電性エラストマー２６とをその接合面が互いに平行となるよう、交互にかつ多重に積層して横一列に配列することにより構成し、この弾性樹脂体２１の複数の導電性エラストマー２６を電気音響部品１と回路基板３０の電極に圧接するようにしている。
弾性樹脂体２１は、５０〜８０°、好ましくは６０〜８０°の硬度（ＪＩＳ−Ｋ６２５３（ＩＳＯ７６１９）の試験方法で測定）に設定される。この硬度設定により、導通の際、圧縮率が２〜１０％ときわめて小さな値でも均一な接続が可能となり、圧縮に伴う座屈を殆ど解消することができる。また、確実で安定した接続状態が得られ、機器に与える負荷が小さくなり、これを通じて小型軽量化を期待することができる。
弾性樹脂体２１は、印刷法やカレンダ法等の方法で製造されるが、安定して生産することのできるカレンダ法で製造されるのが好ましい。例えば、ポリエチレンテレフタレートフィルム上に絶縁性エラストマー２５をカレンダで薄膜に製膜して設け、加熱硬化し、さらに絶縁性エラストマー２５に導電性エラストマー２６をカレンダで薄膜に製膜して設けるとともに、得られた積層薄膜をポリエチレンテレフタレートフィルムから剥離してこれを同順に多数枚積層してブロック体とし、その後、これをスライスして裁断すれば、弾性樹脂体２１を製造することができる。
絶縁性エラストマー２５と導電性エラストマー２６とは、導電性材料が添加されているか否かのみ相違する。これら絶縁性エラストマー２５と導電性エラストマー２６の材料は、弾性樹脂体２１やサポート層２３と同様である。導電性エラストマー２６は、導電性材料が５０〜８００重量部、好ましくは１００〜６００重量部添加される。これは、５０重量部未満では、十分な抵抗値を得ることができず、コネクタとしての機能を期待することができなくなるからである。逆に、８００重量部よりも多いと、弾性体としての機能に欠けるからである。
導電性エラストマー２６の導電性材料としては、カーボン系、黒鉛、金、銀、金合金、銅、アルミニウム、アルミニウム−ケイ素合金、真鍮、リン青銅、ベリリウム銅、ニッケル、ニッケル−チタン合金、モリブデン、タングステン、ステンレス、鉄、鉄−炭素合金等の材料が使用される。この導電性材料の粒子形状としては、球形、楕円形、フレーク形等の様々な形で良い。この粒子としては、必要に応じて金属材料の粒子や熱可塑性樹脂粒子、熱硬化性樹脂粒子、あるいはシリカ粒子等に対して金属によるメッキ処理が施されたものでも良い。これらは、単一で使用しても、あるいは２種以上混合して使用しても良いが、銀系や金系のメッキを施すのが抵抗値の安定性の観点から好ましい。
なお、ホルダ１０と弾性樹脂体２１、すなわち、ホルダ１０と導電接続子２０とを別々ではなく、一体成形することも可能である。その他の部分については、上記実施形態と同様であるので説明を省略する。
本実施形態においても上記実施形態と同様の作用効果が期待でき、しかも、複数本の金属細線２２を並設する必要がないので、部品点数の削減と作業性の向上が大いに期待できるのは明かである。
次に、図１３ないし図１６（ａ）、（ｂ）は本発明の第４の実施形態を示すもので、この場合には、ホルダ１０を電気音響部品１の裏面電極部２に重ねて被覆接着あるいは被覆粘着される断面略Ｌ字形に屈曲形成する。そして、導電接続子２０を、電気音響部品１と回路基板３０の電極間に介在されてこれらの上下接近方向に対し傾斜配置される複数本の導電線条材２７と、この複数本の導電線条材２７の裏面に部分的に接着されて電気音響部品１の電極３に弾接する弾性の第一の絶縁性エラストマー２８と、複数本の導電線条材２７の表面に部分的に接着されて回路基板３０の電極に弾接する弾性の第二の絶縁性エラストマー２８Ａとから構成し、導電線条材２７の長さ方向の略中心部Ｐを基準にして第一、第二の絶縁性エラストマー２８・２８Ａを略点対称にずらして断面略Ｘ字形に配置するとともに、導電線条材２７の露出面と第一、第二の絶縁性エラストマー２８・２８Ａとの間に断面三角形の接触面積減少空間２９をそれぞれ区画形成し、ホルダ１０に第一の絶縁性エラストマー２８の端部を接着して連結するようにしている。
複数本の導電線条材２７は、図１３や図１５（ａ）、（ｂ）に示すように、例えば０．０２ｍｍ以上の所定のピッチで横一列に並んで配置されている。この複数本の導電線条材２７は所定の傾斜角度で直線的に伸びるが、この傾斜角度は３０°〜６０°、好ましくは４５°の範囲が良い。これは、傾斜角が３０°未満の場合には、導通時の圧力軽減効果が低く、導電線条材２７に座屈が生じやすいからである。逆に、６０°を超える場合、電気音響部品用コネクタの高さ寸法が低くなり、電気音響部品用コネクタの圧縮に伴う変位を吸収することができなくなるからである。
各導電線条材２７は、金、金合金、銅、アルミニウム、アルミニウム−ケイ素合金、真鍮、りん青銅、ベリリウム銅、ニッケル、ニッケル−チタン合金、モリブデン、タングステン、ステンレス、鉄、鉄−炭素合金等の材料を使用して細長い板形、帯状、線条に形成され、表面に金や金合金等のメッキが必要に応じて施される。導電線条材２７の表面は、第一、第二の絶縁性エラストマー２８・２８Ａとの接着を良好ならしめるため、必要に応じて溶剤で脱脂処理される。また、第一、第二の絶縁性エラストマー２８・２８Ａがシリコーンゴムからなる場合には、接着性を高めるため、シリコーンゴムとの接着助剤（例えば、シランカップリング剤）が必要に応じて塗布される。
各導電線条材２７の厚さとしては、０．０１〜０．５ｍｍ、好ましくは０．０２〜０．５ｍｍの範囲が良い。これは、０．０１ｍｍ未満の場合には、材料自体の強度に欠け、製品としての使用時に耐久性がなく、しかも、成形時のハンドリング性が悪化するからである。逆に０．５ｍｍを超える場合、材料の剛性が高すぎ、接続荷重を抑制することが困難になり、例えばエッチング、レーザ、スタンピングプレス等の加工が困難になるからである。
なお、導電線条材２７の長さ方向の略中心部Ｐとは、導電線条材２７の長さの１／２の点、あるいはその近傍をいう。
第一、第二の絶縁性エラストマー２８・２８Ａは、弾性を有するシリコーンゴム、ポリブタジエンゴム、天然ゴム、ポリイソプレンゴム、ウレタンゴム、クロロプレンゴム、ポリエステル系ゴム、スチレン−ブタジエン共重合体ゴム、エピクロルヒドリンゴム等の非発泡材料、これらの発泡材料を使用して図１２の奥方向に伸びる肉厚の断面略Ｌ字、略Ｖ字、略く字等に屈曲成形され、製造時には導電線条材２７を挟んで一部が重なる。この同形状を呈した第一、第二の絶縁性エラストマー２８・２８Ａの材料としては、上記材料の中でも、電気絶縁性、耐熱性、耐薬品性、耐熱性、圧縮永久歪みに優れるシリコーンゴムの使用が最適である。
第一、第二の絶縁性エラストマー２８・２８Ａの硬度としては、ゴム硬度１０°〜７０°Ｈ、好ましくはゴム硬度３０°〜６０°Ｈの範囲が良い。これは、係る範囲から外れると、ゴム硬度が高くなり、接圧が高くなるからである。また、ゴム硬度が３０°Ｈ未満の場合には、成形後にシリコーンゴム特有のべたつき感が表面に生じ、取扱いに難を生じるからである。逆に、ゴム硬度が６０°Ｈを超える場合、接圧が必要以上に高くなる。
なお、ホルダ１０と導電接続子２０とは、別々ではなく、一体成形することも可能である。その他の部分については、上記実施形態と同様であるので説明を省略する。
上記構成において、電気音響部品１の電極部２にホルダ１０を粘着材等で貼着又は嵌合固定し、電気音響部品１と回路基板３０とに導電接続子２０を位置決め挟持させ、電気音響部品１に向けて回路基板３０を押圧圧下すれば、弾性支持体として機能する第一、第二の絶縁性エラストマー２８・２８Ａがそれぞれ圧縮し、電気音響部品１の電極、回路基板３０の電極、複数本の導電線条材２７が確実に接触して導通する。
本実施形態においても上記実施形態と同様の作用効果が期待でき、しかも、第一、第二の絶縁性エラストマー２８・２８Ａの上部間と下部間とに、凹み部である接触面積減少空間２９をそれぞれ形成するので、接続面の接触面積を縮小することができる。また、接続圧力が複数本の導電線条材２７の傾斜方向に逃げるので、接続圧力が緩和され、この結果、簡易な構成で接続荷重を大幅に軽減することができる。
また、複数本の導電線条材２７が傾斜しているので、圧縮に伴う導電線条材２７の座屈を抑制防止し、繰り返し圧縮性を著しく向上させることが可能になる。具体的には、１００回の繰り返し圧縮を行っても、安定した導通抵抗が得られるのを確認した。さらに、第一、第二の絶縁性エラストマー２８・２８Ａの形状や硬度を変更すれば、接続荷重をコントロールすることができるので、製品の幅や高さ寸法を大幅に変更しなくても、荷重を任意の値に設定することができる。
なお、上記実施形態では弾性樹脂体２１に複数本の金属細線２２を二列に並べて埋設したものを示したが、弾性樹脂体２１に金属細線２２を一例に並べて埋設しても良いし、三列以上に並べても良い。また、第４の実施形態ではホルダ１０を断面略Ｌ字形に屈曲形成したが、なんらこれに限定されるものではない。例えば、ホルダ１０を断面略板形、断面略Ｃ字形、断面略Ｊ字形等に形成することができる。さらに、ホルダ１０に第二の絶縁性エラストマー２８Ａの端部を接着して連結しても良い。
次に、図１７は本発明の第５の実施形態を示すもので、この場合には、導電接続子２０を、ホルダ１０に所定の間隔で並べて貫通支持される一対の導電ゴムピン４０とし、各導電ゴムピン４０を弾性の導電性エラストマー２６を用いて形成し、一対の導電ゴムピン４０の露出する上下両端部を電気音響部品１と回路基板３０の電極に圧接するようにしている。
各導電ゴムピン４０は、図示のような円柱形でも良いが、なんらこれに限定されるものではなく、例えば楕円の柱形、角柱形、三角形、多角形の柱形等とすることもできる。また、図示のような２本ではなく、３本、４本、５本、６本、８本等のような複数本に増加することもできる。その他の部分については、上記実施形態と同様であるので説明を省略する。
本実施形態においても上記実施形態と同様の作用効果が期待できるのは明白である。さらに、弾性樹脂体２１や絶縁性エラストマー２５等を省略することができるので、部品点数の削減や構成の簡素化が大いに期待できる。
産業上の利用可能性
以上のように本発明によれば、例えリペアが必要な場合でも、電気音響部品を再度使用することができ、しかも、携帯電話等の小型化や軽量化にも有効に対応することができるという効果がある。また、電気音響部品の振動に伴う接続抵抗の不安定化、接続子の疲労、あるいは不安定な接続等を解消することができる。
【図面の簡単な説明】
図１は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態における電気音響部品を示す斜視図である。
図２は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態における電気音響部品の裏面側からの斜視図である。
図３は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態を示す裏面図である。
図４は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態を示す側面図である。
図５は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態を示す平面図である。
図６は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態におけるホルダを示す断面図で、（ａ）図はホルダの両自由端部に脱落係止爪を屈曲形成した説明図、（ｂ）図はホルダの両自由端部を電気音響部品の電極部に嵌合する状態を示す説明図、（ｃ）図はホルダの両自由端部を角筒形に形成した説明図である。
図７は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態におけるホルダを示す説明図である。
図８は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態における導電接続子を示す平面図である。
図９は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態における導電接続子を示す断面図である。
図１０は本発明に係る電気音響部品用コネクタ及びその接続構造の実施形態におけるホルダと導電接続子とを一体化した状態を示す説明図である。
図１１は本発明に係る電気音響部品用コネクタ及びその接続構造の第２の実施形態における導電接続子を示す斜視図である。
図１２は本発明に係る電気音響部品用コネクタ及びその接続構造の第３の実施形態における導電接続子を示す斜視図である。
図１３は本発明に係る電気音響部品用コネクタ及びその接続構造の第４の実施形態を示す裏面図である。
図１４は本発明に係る電気音響部品用コネクタ及びその接続構造の第４の実施形態を示す側面図である。
図１５は本発明に係る電気音響部品用コネクタ及びその接続構造の第４の実施形態におけるホルダと導電接続子とを示す説明図である。
図１６は本発明に係る電気音響部品用コネクタ及びその接続構造の第４の実施形態におけるホルダと導電接続子とを示す説明図である。
図１７は本発明に係る電気音響部品用コネクタ及びその接続構造の第５の実施形態におけるホルダと導電接続子とを示す説明図である。
図１８は本発明に係る電気音響部品用コネクタの接続構造を示す断面説明図である。Technical field
The present invention relates to an electro-acoustic component for electrically connecting an electro-acoustic component such as a microphone, a speaker, and the like used in a mobile phone and a portable terminal (a handy personal device, a PDA, etc.) to an electric joint such as a circuit board. The present invention relates to a connector and its connection structure.
Background art
When an electroacoustic component is used as voice communication or confirmation sound generation means for a mobile phone, the electroacoustic component and the circuit board are electrically connected. Conventionally, the means for this connection is a pin terminal or a lead wire. Is used. In recent years, with the spread of mobile phones and other products, product types have increased and product life has been shortened, the mounting method of electro-acoustic components has been reviewed. From the viewpoint of cost, a method of using an inexpensive spring terminal is being studied.
As described above, conventionally, when electrically conducting between the electroacoustic component and the electrode of the circuit board, a method using soldering with a pin terminal or a lead wire and using an inexpensive spring terminal is used. Has the following problems.
First, in the case of soldering which is directly connected to a circuit board, when repair is required due to a work error or the like, the electroacoustic component cannot be used again, so that there is a problem that efficiency cannot be improved at all. is there.
In addition, when a spring terminal is used, it is necessary to secure a certain amount of space for connection, and it is difficult to cope with a recent reduction in size and weight of a mobile phone. Further, the electro-acoustic component inevitably generates vibration around its structure, but when the vibration is generated, the connection resistance of the spring terminal becomes unstable. Further, since a load is repeatedly applied to the spring terminal, there is not less a risk of fatigue (also referred to as settling) and a possibility of shaving the gold-plated portion of the electrode. As a result, the resistance value increases and stable connection conduction is ensured. You can't do that.
In order to solve such a problem, a technique using a coil type spring terminal has been proposed. According to this technique, the above problem can be solved to some extent, but it is difficult to eliminate fatigue of the spring terminal.
The present invention has been made in view of the above, and even when repair is necessary, the electroacoustic component can be used again, and it is possible to cope with the miniaturization and weight reduction of the electric joint, and furthermore, it is possible to reduce vibration. It is an object of the present invention to provide a connector for an electroacoustic component and a connection structure therefor, which can eliminate the associated instability of connection resistance, fatigue of connectors, unstable connection, and the like.
Disclosure of the invention
The present invention has been made to achieve the above object, and the gist thereof is as follows.
First, a first gist of the present invention is a connector for an electro-acoustic component attached to an electro-acoustic component having an electrode,
An electroacoustic component connector comprising: an insulating holder attached to the electroacoustic component; and a conductive connector provided on the holder and in contact with an electrode of the electroacoustic component.
Next, a second gist of the present invention resides in that the holder is formed in a substantially U-shaped or substantially rectangular tubular cross section to be fitted to the electrode of the electroacoustic component, and the conductive connector is provided on the insulating member provided on the holder. 3. The electroacoustic device according to the abstract 1, comprising: an elastic resin body; and a plurality of conductive thin wires embedded in the height direction of the elastic resin body, arranged at a predetermined pitch, and in contact with electrodes of the electroacoustic component. It is in the connector for parts.
Further, a third gist of the present invention is that the holder is formed to have a substantially U-shaped or substantially rectangular cylindrical cross section which is fitted or fitted in an electrode of the electroacoustic component in a fitted state, and the holder is provided with a pocket hole. An insulating elastic resin body provided in a pocket hole of the holder, and a plurality of conductive wires arranged at a predetermined pitch on the surface of the elastic resin body and in contact with electrodes of the electroacoustic component. The connector for an electroacoustic component according to the first aspect, comprising a thin wire.
Next, a fourth gist of the present invention is that the holder is formed to have a substantially U-shaped or substantially rectangular cylindrical cross section which is fitted or fitted in an electrode of the electroacoustic component in a fitted state, and a pocket hole is formed in the holder. The conductive connector is provided as an elastic resin body provided in a pocket hole of the holder, and the elastic resin body is formed by alternately stacking an insulating elastomer and a conductive elastomer. The electroacoustic component connector according to the above aspect 1, wherein the conductive elastomer is brought into contact with the electrode of the electroacoustic component.
Further, a fifth gist of the present invention is that the conductive connector is provided with a conductive wire material which is inclinedly contacted with the electrode of the electroacoustic component, and an elastic first wire provided partially on one surface of the conductive wire material. One insulating elastomer, and an elastic second insulating elastomer provided partially on the other surface of the conductive wire material, with reference to a substantially central portion in the longitudinal direction of the conductive wire material. The first and second insulating elastomers are arranged substantially point-symmetrically, and contact area reduction spaces are respectively formed between the exposed surface of the conductive wire and the first and second insulating elastomers. The electroacoustic component connector according to the above aspect 1, wherein the holder is provided with one of the first and second insulating elastomers.
Further, a sixth aspect of the present invention includes an insulating holder attached to an electroacoustic component having an electrode, and a conductive connector provided on the holder and in contact with the electrode of the electroacoustic component. A connection structure for an electro-acoustic component connector, wherein the electro-acoustic component connector has an electrode on an outer peripheral portion thereof and an electrode of an electric joint electrically connected to the electrode by an electro-acoustic component connector.
Next, a seventh gist of the present invention resides in that the holder is formed in a substantially U-shaped or substantially rectangular cylindrical cross section to be fitted to the electrode of the electroacoustic component, and the conductive connector is provided on the insulating member provided on the holder. 7. The electroacoustic device according to the summary 6, comprising an elastic resin body, and a plurality of conductive fine wires embedded in the height direction of the elastic resin body and arranged at a predetermined pitch and in contact with the electrodes of the electroacoustic component. In the connection structure of the component connector.
According to an eighth aspect of the present invention, the holder is formed in a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted in an electrode of the electroacoustic component in a fitted state, and the holder is provided with a pocket hole. An insulating elastic resin body provided in a pocket hole of the holder, and a plurality of conductive connectors arranged at a predetermined pitch on the surface of the elastic resin body and in contact with the electrodes of the electroacoustic component. The connection structure of the connector for an electroacoustic component according to the sixth aspect, wherein the connector comprises a thin wire.
Next, a ninth gist of the present invention is that the holder is formed in a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted in an electrode of the electroacoustic component in a fitted state, and a pocket hole is formed in the holder. The conductive connector is provided as an elastic resin body provided in a pocket hole of the holder, and the elastic resin body is formed by alternately stacking an insulating elastomer and a conductive elastomer. In the connection structure for an electroacoustic component connector according to the sixth aspect, the conductive elastomer is brought into contact with the electrode of the electroacoustic component.
Further, a tenth aspect of the present invention resides in that the conductive connector is formed by connecting a conductive wire material inclined to the electrode of the electroacoustic component and an elastic first wire provided partially on one surface of the conductive wire material. An insulating elastomer and an elastic second insulating elastomer partially provided on the other surface of the conductive wire material, and with reference to a substantially central portion in the longitudinal direction of the conductive wire material. The first and second insulating elastomers are arranged substantially point-symmetrically, and contact area reduction spaces are respectively formed between the exposed surface of the conductive filament material and the first and second insulating elastomers. The connection structure for a connector for an electroacoustic component according to the sixth aspect, wherein the holder is provided with one of the first and second insulating elastomers.
Here, the electroacoustic component in the present invention may have any shape such as a button shape, a cylindrical shape, a square shape, a square shape, and a polygonal shape. The electrodes of the electroacoustic component may be formed of a pair of flat metal plates, or may be formed of a plurality of bent leaf springs, coil springs, or the like. Examples of the manner of attaching the holder to the electroacoustic component include fitting using unevenness or the like, insertion using a positioning pin, adhesion, adhesion, and the like. Further, the holder and the conductive connector can be formed separately, or they can be integrated after being manufactured separately or by integral molding using silicone rubber or the like.
In addition, the holder is formed in a substantially U-shaped or substantially rectangular cylindrical cross-section that is fitted or fitted to the electrode of the electroacoustic component in a fitted state, and a pocket hole is provided in the holder, and the conductive connector is inserted into the pocket hole of the holder. It may be composed of an insulating elastic resin body to be provided, and a plurality of conductive fine wires that are buried in the height direction of the elastic resin body and are arranged at a predetermined pitch and contact the electrodes of the electroacoustic component. The substantially U-shaped cross section includes similar U-shaped and C-shaped. The substantially central portion includes a central portion having a strict meaning and a central portion having a rough meaning. The same applies to the substantially point-symmetric wording. Furthermore, examples of the electrical joint include various circuit boards (for example, printed boards, flexible boards, build-up wiring boards), liquid crystal displays, and the like.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 9 and FIG. An insulating holder 10 covered or fitted to the electrode portion 2 in the outer peripheral portion of the back surface of the device, and a conductive connector 20 penetrated and supported by the holder 10 and pressed against the pair of electrodes 3 of the lower electroacoustic component 1. The pair of electrodes 3 of the electroacoustic component 1 and the electrodes of the upper circuit board 30 are electrically connected to each other by being compressed.
The electroacoustic component 1 includes various kinds of speakers (including a receiver), microphones (for example, non-directional microphones, directional microphones, and the like), and is arranged with the diaphragm facing downward in FIG. As shown in FIGS. 1 and 2, the electroacoustic component 1 is basically formed in a low columnar shape or a round button shape, and a part of an outer peripheral portion is formed to protrude in a substantially rectangular shape in a radial direction to form an electrode. A pair of electrodes 3 made of a rectangular metal plate are arranged side by side at a predetermined interval on a pack plate which forms a portion 2 and which is a back surface of the electrode portion 2.
The holder 10 is formed by injection molding, extrusion molding, bonding, cutting, or the like using a predetermined material, and is attached to and detached from the electrode portion 2 which is the outer peripheral portion of the electroacoustic component 1 as shown in FIGS. It is freely fitted and locked. Examples of the material of the holder 10 include general-purpose plastics, engineering plastics having excellent heat resistance, dimensional stability, and moldability, various elastomers (for example, silicone rubber), and the like. Specifically, polypropylene, vinyl chloride, polyethylene, ABS resin, polycarbonate, polycarbonate containing glass fiber, polyetherimide, polyamide, polyethersulfone, aromatic polyester, liquid crystal polymer and the like are used. Among these materials, polycarbonate is most suitable from the viewpoint of workability, cost, and the like.
The material of the holder 10 is not limited to these. For example, the same material as the elastic resin body 21 and the support layer 23 described later can be used.
As shown in FIGS. 3, 5 to 7, the holder 10 is basically bent and formed into a substantially convex shape in a plane, a substantially U-shaped cross section, or a substantially rectangular tube shape, and a pocket hole 11 for a conductive connector is formed. It is perforated in an elongated, generally oval or rectangular shape. At the two free ends extending below the holder 10, fall-off preventing claws 12 are formed to be bent inward (see FIG. 6A) in consideration of the incorporation property and cost, etc. It detachably engages with the electrode portion 2 of the electroacoustic component 1 to effectively prevent the conductive connector 20 from falling off.
However, the present invention is not limited to such a configuration. The two free ends of the holder 10 are fitted to the electrode portions 2 of the electro-acoustic component 1 to prevent the holder 10 from falling off. It may be formed in the shape of a rectangular tube, and fitted to the electrode portion 2 of the electroacoustic component 1 to regulate the falling off (see FIGS. 6B and 6C).
As shown in FIGS. 3, 8, and 9, the conductive connector 20 includes an insulating elastic resin body 21 which is detachably or fixedly fitted in the pocket hole 11 of the holder 10, and The electroacoustic component 1 includes a plurality of fine metal wires 22 that are buried linearly in the height direction and arranged in a plurality of rows in the longitudinal direction at a predetermined pitch. The elastic resin body 21 is formed into a block body using a predetermined material that is not deformed significantly by its own weight nor plastically deformed after curing, and is formed into a block body. Adhesively bonded.
Examples of the material of the elastic resin body 21 and the support layer 23 include copolymer rubbers such as natural rubber, butadiene / styrene, acrylonitrile / butadiene, acrylonitrile / butadiene / styrene, styrene / ethylene, ethylene / propylene, and ethylene / propylene / diene. , Synthetic rubbers such as chloroprene rubber, silicone rubber, butadiene rubber, isoprene rubber, chlorosulfonated polyethylene rubber, polysulfide rubber, butyl rubber, fluorine rubber, urethane rubber, polyisobutylene rubber, thermoplastic elastomers such as polyester elastomer, plastic Vinyl chloride resin, vinyl acetate resin, vinyl chloride / vinyl acetate copolymer resin, and the like. Among these, an inexpensive silicone rubber excellent in aging characteristics, electrical insulation, heat resistance, compression set, workability and the like is most suitable.
Note that if the same material as that of the holder 10 is used, the holder 10 and the conductive connector 20 are optimally integrated.
Examples of the silicone rubbers include polysiloxanes such as dimethyl-, methylphenyl-, and methylvinyl-, halogenated polysiloxanes having appropriate rheological properties by adding a filler such as silica, and metals. Examples include halogenated polysiloxanes that have been vulcanized or cured with salts.
The plurality of thin metal wires 22 are arranged so that two or more thin metal wires 22 contact each electrode 3 of the electroacoustic component 1. This is because, if a plurality of fine metal wires 22 are in contact with each electrode 3 of the electroacoustic component 1, the resistance value is stabilized and the stress concentration can be expected to be reduced. Each thin metal wire 22 is made of gold, silver, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium copper, nickel, nickel-titanium alloy, molybdenum, tungsten, stainless steel, iron, iron-carbon alloy, etc. Are used, or metal plating is applied to these materials as necessary. Among these, the thin metal wire 22 plated with gold is preferable from the viewpoint of the resistance value and the stability such as corrosion in an environment such as high temperature and high humidity.
Further, the diameter of each thin metal wire 22 is in the range of 3 to 500 μm, preferably 10 to 100 μm. This is because if it is too thin, there is a risk of disconnection during arrangement, and if it is too thick, a small pitch cannot be obtained. Further, when the diameter of each of the thin metal wires 22 is in the range of 3 to 500 μm, preferably 10 to 100 μm, moldability and handling are facilitated.
In the above configuration, when the electroacoustic component 1 and the circuit board 30 are electrically connected, the electrode portion 2 of the electroacoustic component 1 is fitted and covered with the holder 10, and the conductive connector 20 is inserted into the pocket hole 11 of the holder 10. The metal wire 22 is penetrated and supported, and one end of the thin metal wire 22 is brought into contact with the electrode 3 of the electroacoustic component 1 and also incorporated in a case of a mobile phone or the like, and the other end of the thin metal wire 22 is brought into contact with the electrode of the circuit board 30. If the board 30 is fixed under pressing pressure, the electroacoustic component 1 and the circuit board 30 can be reliably conducted (see FIG. 18).
When conducting the electroacoustic component 1 and the circuit board 30, the conductive connector 20 is penetrated and supported in the pocket hole 11 of the holder 10, and the holder 10 is fitted and covered on the electrode portion 2 of the electroacoustic component 1. The thin metal wire 22 of the connector 20 may be brought into contact with the electrode 3 of the electroacoustic component 1. In addition, the method of allowing the conductive connector 20 to penetrate and support the pocket hole 11 of the holder 10 may be a manual operation or an automatic operation by an automatic mounting device. Furthermore, it is also possible to reduce the number of parts by integrally molding the holder 10 and the conductive connector 20 as shown in FIG. 10 instead of separately.
According to the above configuration, the electro-acoustic component 1 and the circuit board 30 are not electrically connected to each other by soldering. Therefore, even if repair is required due to a work error or the like, the electro-acoustic component 1 can be used again. This makes it possible to significantly improve the efficiency of work and the like. In addition, since a thin metal wire 22 is used instead of using a spring terminal, there is no need to secure a predetermined space for connection. Therefore, it is possible to sufficiently cope with the recent reduction in size and weight of mobile phones and the like.
Further, since there is no fear that the connection resistance becomes unstable, fatigue occurs due to the repeated load, and the gold-plated portion of the electrode peels off, extremely stable connection conduction can be ensured. Furthermore, since a coil-type spring terminal is not used, fatigue and the like can be effectively eliminated. Furthermore, since the holder 10 does not fit and store the electro-acoustic component 1 but fits and covers only the electrode portion 2 of the electro-acoustic component 1, a reduction in material and a reduction in manufacturing cost can be greatly expected.
Next, FIG. 11 shows a second embodiment of the present invention. In this case, the conductive connector 20 has a substantially semi-oval shape in which the conductive connector 20 is detachably fitted into the pocket hole 11 of the holder 10. A plurality of insulating elastic resin bodies 21 and a plurality of substantially U-shaped members which are arranged side by side on the curved surface of the elastic resin bodies 21 at a predetermined pitch and are in pressure contact with the electroacoustic component 1 and the electrodes of the circuit board 30; , And a separate rubber layer (not shown) is selectively adhered to the linear upright surface of the elastic resin body 21.
The holder 10 and the conductive connector 20 can be integrally formed instead of being separated. The material of the elastic resin body 21 is the same as that of the elastic resin body 21 and the support layer 23. The other parts are the same as those in the above-described embodiment, and the description is omitted.
In this embodiment, the same operation and effect as the above embodiment can be expected, and it is extremely effective when the thin metal wires 22 cannot be buried linearly in the height direction of the elastic resin body 21.
Next, FIG. 12 shows a third embodiment of the present invention. In this case, the conductive connector 20 is formed as a block-shaped elastic resin body 21 which is removably fitted into the pocket hole 11 of the holder 10. The elastic resin bodies 21 are formed by laminating an elastic insulating elastomer 25 having a thin plate shape and a conductive elastomer 26 alternately and multiplely so that their joint surfaces are parallel to each other and arranging them in a horizontal row. The plurality of conductive elastomers 26 of the elastic resin body 21 are pressed against the electroacoustic component 1 and the electrodes of the circuit board 30.
The elastic resin body 21 has a hardness of 50 to 80 °, preferably 60 to 80 ° (measured by a test method of JIS-K6253 (ISO7619)). With this hardness setting, even when the compression ratio is as small as 2 to 10%, uniform connection can be achieved during conduction, and buckling due to compression can be almost eliminated. In addition, a reliable and stable connection state can be obtained, and the load applied to the device can be reduced, whereby a reduction in size and weight can be expected.
The elastic resin body 21 is manufactured by a method such as a printing method or a calendar method, but is preferably manufactured by a calendar method that can be stably manufactured. For example, on a polyethylene terephthalate film, an insulating elastomer 25 is formed into a thin film by a calendar and provided, cured by heating, and a conductive elastomer 26 is further formed on the insulating elastomer 25 by a calendar to be formed into a thin film. The elastic resin body 21 can be manufactured by peeling the laminated thin film from the polyethylene terephthalate film, laminating a large number of the same in the same order to form a block body, and then slicing and cutting the block body.
The insulating elastomer 25 and the conductive elastomer 26 differ only in whether or not a conductive material is added. The materials of the insulating elastomer 25 and the conductive elastomer 26 are the same as those of the elastic resin body 21 and the support layer 23. The conductive elastomer 26 is added with a conductive material in an amount of 50 to 800 parts by weight, preferably 100 to 600 parts by weight. This is because if the amount is less than 50 parts by weight, a sufficient resistance cannot be obtained, and the function as a connector cannot be expected. Conversely, if it is more than 800 parts by weight, the function as an elastic body is lacking.
Examples of the conductive material of the conductive elastomer 26 include carbon, graphite, gold, silver, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium copper, nickel, nickel-titanium alloy, molybdenum, and tungsten. , Stainless steel, iron, iron-carbon alloy and the like are used. Various shapes such as a spherical shape, an elliptical shape, and a flake shape may be used as the particle shape of the conductive material. As the particles, metal particles, thermoplastic resin particles, thermosetting resin particles, silica particles, or the like may be subjected to a metal plating treatment as necessary. These may be used singly or as a mixture of two or more kinds. However, it is preferable to apply silver-based or gold-based plating from the viewpoint of stability of resistance value.
Note that the holder 10 and the elastic resin body 21, that is, the holder 10 and the conductive connector 20 can be integrally formed instead of being separated. The other parts are the same as those in the above-described embodiment, and the description is omitted.
In this embodiment, the same operation and effect as those of the above embodiment can be expected. Further, since it is not necessary to arrange a plurality of thin metal wires 22 side by side, it is apparent that a reduction in the number of parts and an improvement in workability can be greatly expected. It is.
13 to 16 (a) and (b) show a fourth embodiment of the present invention. In this case, the holder 10 is overlaid on the back electrode 2 of the electroacoustic component 1 to cover the holder. It is bent and formed into a substantially L-shaped cross section to be adhered or coated. A plurality of conductive wire members 27 interposed between the electroacoustic component 1 and the electrodes of the circuit board 30 and arranged obliquely with respect to the vertical approach direction, and the plurality of conductive wires An elastic first insulating elastomer 28 which is partially adhered to the back surface of the strip material 27 and elastically contacts the electrode 3 of the electroacoustic component 1; A second elastic elastomer 28A elastically in contact with the electrodes of the circuit board 30, and the first and second insulating elastomers 28 are formed with reference to a substantially central portion P of the conductive wire material 27 in the longitudinal direction. 28A is displaced substantially point-symmetrically and arranged in a substantially X-shaped cross-section, and a contact area reduction space having a triangular cross-section is formed between the exposed surface of the conductive wire material 27 and the first and second insulating elastomers 28 and 28A. 29 are separately formed, and the holder 1 It is to be connected by bonding an end portion of the first insulating elastomer 28.
As shown in FIG. 13 and FIGS. 15A and 15B, the plurality of conductive wires 27 are arranged in a row at a predetermined pitch of, for example, 0.02 mm or more. The plurality of conductive wires 27 extend linearly at a predetermined inclination angle, and the inclination angle is preferably in a range of 30 ° to 60 °, and more preferably 45 °. This is because when the inclination angle is less than 30 °, the effect of reducing the pressure during conduction is low, and buckling is likely to occur in the conductive wire material 27. Conversely, if the angle exceeds 60 °, the height of the connector for electro-acoustic components is reduced, and it becomes impossible to absorb the displacement caused by the compression of the connector for electro-acoustic components.
Each conductive wire material 27 is made of gold, gold alloy, copper, aluminum, aluminum-silicon alloy, brass, phosphor bronze, beryllium copper, nickel, nickel-titanium alloy, molybdenum, tungsten, stainless steel, iron, iron-carbon alloy, etc. Is formed into an elongated plate shape, a band shape, or a striated material, and the surface is plated with gold or a gold alloy as necessary. The surface of the conductive wire material 27 is degreased with a solvent as necessary in order to improve the adhesion with the first and second insulating elastomers 28 and 28A. When the first and second insulating elastomers 28 and 28A are made of silicone rubber, an adhesion aid (for example, a silane coupling agent) with the silicone rubber may be applied as needed to enhance the adhesiveness. Is done.
The thickness of each conductive wire 27 is in the range of 0.01 to 0.5 mm, preferably 0.02 to 0.5 mm. This is because if the thickness is less than 0.01 mm, the material itself lacks strength, has no durability when used as a product, and has poor handleability during molding. On the other hand, if it exceeds 0.5 mm, the rigidity of the material is too high, and it is difficult to suppress the connection load, and it becomes difficult to perform processing such as etching, laser, and stamping press.
In addition, the substantially central portion P in the length direction of the conductive wire material 27 refers to a point which is の of the length of the conductive wire material 27 or its vicinity.
The first and second insulating elastomers 28A are elastic silicone rubber, polybutadiene rubber, natural rubber, polyisoprene rubber, urethane rubber, chloroprene rubber, polyester rubber, styrene-butadiene copolymer rubber, and epichlorohydrin rubber. Non-foamed materials, such as these, are formed into a thick L-shaped, substantially V-shaped, substantially V-shaped cross section extending in the depth direction of FIG. 12 by using these foamed materials. Partial overlap between them. Among the materials of the first and second insulating elastomers 28 and 28A having the same shape, among the above materials, silicone rubber having excellent electrical insulation, heat resistance, chemical resistance, heat resistance, and compression set is used. Use is optimal.
The hardness of the first and second insulating elastomers 28 and 28A is preferably in the range of rubber hardness 10 ° to 70 ° H, and more preferably in the range of rubber hardness 30 ° to 60 ° H. This is because, if it is out of the range, the rubber hardness increases and the contact pressure increases. Also, if the rubber hardness is less than 30 ° H, stickiness peculiar to silicone rubber is generated on the surface after molding, and handling becomes difficult. Conversely, when the rubber hardness exceeds 60 ° H, the contact pressure becomes higher than necessary.
Note that the holder 10 and the conductive connector 20 can be integrally formed instead of being separated. The other parts are the same as those in the above-described embodiment, and the description is omitted.
In the above configuration, the holder 10 is attached or fixed to the electrode portion 2 of the electroacoustic component 1 with an adhesive or the like, and the conductive connector 20 is positioned and sandwiched between the electroacoustic component 1 and the circuit board 30. When the circuit board 30 is pressed down toward 1, the first and second insulating elastomers 28 and 28A functioning as elastic supports are respectively compressed, and the electrodes of the electroacoustic component 1, the electrodes of the circuit board 30, The conductive wire members 27 are reliably brought into contact with each other to conduct electricity.
In this embodiment, the same operation and effect as those of the above embodiment can be expected. In addition, a contact area reduction space 29 which is a recess is provided between the upper and lower portions of the first and second insulating elastomers 28 and 28A. Since each is formed, the contact area of the connection surface can be reduced. Further, since the connection pressure escapes in the direction of inclination of the plurality of conductive wires 27, the connection pressure is reduced, and as a result, the connection load can be greatly reduced with a simple configuration.
Further, since the plurality of conductive wires 27 are inclined, it is possible to prevent buckling of the conductive wires 27 due to compression, and to remarkably improve the repetitive compressibility. Specifically, it was confirmed that a stable conduction resistance was obtained even after 100 times of compression. Further, if the shape and hardness of the first and second insulating elastomers 28 and 28A are changed, the connection load can be controlled. Therefore, even if the width and height of the product are not largely changed, the load can be reduced. Can be set to any value.
In the above embodiment, a plurality of fine metal wires 22 are arranged and embedded in the elastic resin body 21 in two rows. However, the fine metal wires 22 may be arranged and embedded in the elastic resin body 21 as an example. They may be arranged in rows or more. In the fourth embodiment, the holder 10 is formed to have a substantially L-shaped cross section. However, the present invention is not limited to this. For example, the holder 10 can be formed in a substantially plate-shaped cross section, a substantially C-shaped cross section, a substantially J-shaped cross section, or the like. Furthermore, the end of the second insulating elastomer 28A may be bonded to the holder 10 by bonding.
Next, FIG. 17 shows a fifth embodiment of the present invention. In this case, the conductive connectors 20 are formed as a pair of conductive rubber pins 40 which are arranged in the holder 10 at predetermined intervals and are supported by being penetrated. The conductive rubber pins 40 are formed using the elastic conductive elastomer 26, and the exposed upper and lower ends of the pair of conductive rubber pins 40 are pressed against the electroacoustic component 1 and the electrodes of the circuit board 30.
Each conductive rubber pin 40 may have a cylindrical shape as shown in the figure, but is not limited thereto, and may have an elliptical column shape, a rectangular column shape, a triangular shape, a polygonal column shape, or the like. Further, instead of two as shown, the number can be increased to a plurality of three, four, five, six, eight or the like. The other parts are the same as those in the above-described embodiment, and the description is omitted.
It is apparent that the present embodiment can expect the same operation and effect as the above embodiment. Furthermore, since the elastic resin body 21 and the insulating elastomer 25 can be omitted, the number of parts can be reduced and the configuration can be greatly simplified.
Industrial applicability
As described above, according to the present invention, even when repair is required, the electro-acoustic component can be used again, and moreover, it is possible to effectively cope with miniaturization and weight reduction of a mobile phone or the like. effective. In addition, unstable connection resistance, fatigue of the connector, or unstable connection due to vibration of the electroacoustic component can be eliminated.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an electro-acoustic component in an embodiment of an electro-acoustic component connector and a connection structure thereof according to the present invention.
FIG. 2 is a perspective view from the back side of the electroacoustic component in the embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 3 is a rear view showing an embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 4 is a side view showing an embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 5 is a plan view showing an embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 6 is a cross-sectional view showing a holder in the embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention. FIG. (B) is an explanatory view showing a state in which both free ends of the holder are fitted to the electrode portions of the electroacoustic component, and (c) is an explanatory view in which both free ends of the holder are formed in a rectangular cylindrical shape. .
FIG. 7 is an explanatory view showing a holder in the embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 8 is a plan view showing a conductive connector in the embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 9 is a sectional view showing a conductive connector in an embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 10 is an explanatory view showing an integrated state of the holder and the conductive connector in the embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 11 is a perspective view showing a conductive connector according to a second embodiment of the connector for an electroacoustic component and its connection structure according to the present invention.
FIG. 12 is a perspective view showing a conductive connector according to a third embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 13 is a rear view showing a fourth embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 14 is a side view showing a fourth embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 15 is an explanatory view showing the holder and the conductive connector in the fourth embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 16 is an explanatory view showing a holder and a conductive connector in a fourth embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 17 is an explanatory view showing a holder and conductive connectors in a fifth embodiment of the connector for an electroacoustic component and the connection structure thereof according to the present invention.
FIG. 18 is an explanatory sectional view showing the connection structure of the connector for an electroacoustic component according to the present invention.

Claims

An electro-acoustic component connector attached to an electro-acoustic component having electrodes,
A connector for an electro-acoustic component, comprising: an insulating holder attached to the electro-acoustic component; and a conductive connector provided on the holder and in contact with an electrode of the electro-acoustic component.

The holder is formed in a substantially U-shaped or substantially rectangular cylindrical shape in cross section to be fitted to the electrode of the electroacoustic component, and the conductive connector is provided by an insulating elastic resin body provided in the holder and a height of the elastic resin body. 2. The connector for an electroacoustic component according to claim 1, comprising a plurality of conductive thin wires that are buried in a vertical direction, are arranged at a predetermined pitch, and are in contact with the electrodes of the electroacoustic component.

The holder is formed to have a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted to the electrode of the electroacoustic component in a fitted state. 2. An electro-acoustic component comprising: an insulating elastic resin body provided in a hole; and a plurality of thin conductive wires arranged on a surface of the elastic resin body at a predetermined pitch and in contact with electrodes of the electroacoustic component. The connector for an electroacoustic component according to the above.

The holder is formed to have a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted to the electrode of the electroacoustic component in a fitted state. The elastic resin body is provided in the hole, and the elastic resin body is formed by alternately stacking an insulating elastomer and a conductive elastomer, and the conductive elastomer of the elastic resin body is brought into contact with the electrode of the electroacoustic component. The connector for an electroacoustic component according to claim 1, wherein

A conductive wire material that contacts the electrode of the electroacoustic component at an angle, an elastic first insulating elastomer partially provided on one surface of the conductive wire material, and the conductive wire material. An elastic second insulating elastomer partially provided on the other surface of the material, and the first and second insulating elastomers based on a substantially central portion in a longitudinal direction of the conductive wire material. Are arranged substantially symmetrically with respect to each other, and contact area reduction spaces are respectively formed between the exposed surface of the conductive wire material and the first and second insulating elastomers, and the first and second spaces are formed in the holder. 2. The connector for an electroacoustic component according to claim 1, wherein one of the insulating elastomers is provided.

An electrode is provided on an outer peripheral portion by an electroacoustic component connector including an insulating holder attached to an electroacoustic component having an electrode and a conductive connector provided on the holder and in contact with an electrode of the electroacoustic component. A connection structure for a connector for an electro-acoustic component, wherein the electro-acoustic component provided is electrically connected to an electrode of an electric joint.

The holder is formed in a substantially U-shaped or substantially rectangular cylindrical shape in cross section to be fitted to the electrode of the electroacoustic component, and the conductive connector is provided by an insulating elastic resin body provided in the holder and a height of the elastic resin body. 7. The connection structure for a connector for an electroacoustic component according to claim 6, comprising a plurality of conductive thin wires that are buried in the width direction and are arranged at a predetermined pitch and contact the electrodes of the electroacoustic component.

The holder is formed to have a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted to the electrode of the electroacoustic component in a fitted state. 7. The electro-acoustic component according to claim 6, comprising: an insulating elastic resin body provided in the hole; and a plurality of conductive thin wires arranged on the surface of the elastic resin body at a predetermined pitch and in contact with the electrodes of the electroacoustic component. The connection structure of the connector for an electroacoustic component according to the above.

The holder is formed to have a substantially U-shaped or substantially rectangular tubular cross section which is fitted or fitted to the electrode of the electroacoustic component in a fitted state. The elastic resin body is provided in the hole, and the elastic resin body is formed by alternately stacking an insulating elastomer and a conductive elastomer, and the conductive elastomer of the elastic resin body is brought into contact with the electrode of the electroacoustic component. 7. The connection structure for a connector for an electroacoustic component according to claim 6, wherein

A conductive wire material that contacts the electrode of the electroacoustic component at an angle, an elastic first insulating elastomer partially provided on one surface of the conductive wire material, and the conductive wire material. An elastic second insulating elastomer partially provided on the other surface of the material, and the first and second insulating elastomers based on a substantially central portion in a longitudinal direction of the conductive wire material. Are arranged substantially symmetrically with respect to each other, and contact area reduction spaces are respectively formed between the exposed surface of the conductive wire material and the first and second insulating elastomers, and the first and second spaces are formed in the holder. 7. The connection structure for a connector for an electroacoustic component according to claim 6, wherein one of the insulating elastomers is provided.