JP2004319423A

JP2004319423A - Battery with terminal board

Info

Publication number: JP2004319423A
Application number: JP2003184922A
Authority: JP
Inventors: Akira Kishida; 章岸田
Original assignee: Hitachi Maxell Ltd
Current assignee: Maxell Ltd
Priority date: 2002-06-27
Filing date: 2003-06-27
Publication date: 2004-11-11
Anticipated expiration: 2023-06-27
Also published as: JP3989017B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery with a terminal board in which a terminal board can be easily and reliably mounted only by pressing in the lead-out end part of the terminal board to a circuit board without the need for soldering treatment. <P>SOLUTION: The battery includes a battery body 2, an electric conductive section 6 provided at a circuit board 5, a terminal board 7 for establishing electric connections between the battery body 2 and the electric conductive section 6 of the circuit board 5. The terminal board 7 includes a base end section connected to the battery body 2 side, and a lead-out end section 9 led out from the battery body 2 and connected to the electric conductive section 6. The electric conductive section 6 of the circuit board 5 includes a through-hole 13. The lead-out end section 9 of the terminal board 7 has a contact piece 11 coming into contact with the electric conductive section 6 within the through-hole 13, and an engagement piece 12 pressed in within the through-hole 13 for fixing the lead-out end section 9 to the circuit board 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、端子板付き電池に関する。さらに詳しくは、ハンダ付け処理をしなくとも電子機器等の回路基板に取り付け可能な端子板付き電池に関する。
【０００２】
【従来の技術】
ボタン形やコイン形などの扁平形の電池、あるいは、角形、円筒形などの電池は、アルカリ乾電池、リチウム電池、リチウム二次電池、アルカリ蓄電池に代表される一次電池、二次電池のいずれも、各種電子機器の主電源やメモリーバックアップ電源として広く用いられている。
【０００３】
上記電池を電子機器の回路基板に実装するにあたり、製造工程の効率化のために、回路基板へのハンダ付けを可能にする端子板を電池に接続し、他の電子部品と共に、リフロー炉を用いて回路基板にハンダ付けすることが考えられている。
【０００４】
ところが、リフロー炉の通過の際に電池が加熱され、短時間ではあるが、電池の温度が例えば１５０℃を越える高温に達するため、電池の構成部材に物理的変化あるいは化学的変化が生じ、電池の密閉性の低下、放電特性の低下、内部短絡、サイクル特性の低下などの問題を生じる。一方、電池を保護するために、他の電子部品とは別に電池のみ手作業でハンダ付けを行うと、作業効率が大幅に低下するため、リフロー炉を通過させても電池特性などに悪影響のない耐熱性の高い電池が求められていた。特に、融点が低い金属リチウムを負極に用い、揮発性の高い有機溶媒を電解液溶媒としたリチウム電池では、耐熱化のための技術開発が強く要望されていた。
【０００５】
このような要望に対し、耐熱性の高いパッキングを用いたり、高温での貯蔵性を向上させる添加剤を用いた電池が提案されている（特許文献１および２参照）。これによれば、電池の耐熱性が高まり、リフロー炉の通過に支障のない電池が得られる。
【０００６】
一方、ハンダ付けによる電池の固定をやめ、電池本体とこれに取り付けた端子板とで回路基板を挟み込むことにより、回路基板上に電池を固定し、電池の交換保守を容易にした電池の実装構造も提案されている（特許文献３参照）。この形式によれば、ハンダ付けなしでの電池の実装が可能となる。
【０００７】
【特許文献１】
特開平８−１５３５００号公報（段落番号０００２−０００８）
【特許文献２】
特開２０００−３２３１７１号公報（段落番号０００５−０００７）
【特許文献３】
特開平１０−６４４９０号公報（段落番号０００２−０００５）
【０００８】
【発明が解決しようとする課題】
しかしながら、電池そのものに耐熱性を付与する形態では、リフロー炉の通過に対応させるために電池のパッキングを耐熱性の高い材料にすると、汎用のポリオレフィンなどの材料に比べて材料コストが大幅にアップする。また、電解液に添加剤を含有させた場合は、程度の差がありこそすれ放電特性の低下を来すため、使用可能な電子機器が限定される。添加剤を加えたとしても、他の構成部材まで同様に耐熱性の高い材料を用いる必要があるため、やはり大幅なコストアップを招く。そもそも、回路基板との導通接続のためにハンダを用いることは、ハンダに含まれる鉛の環境への影響の問題もあり、環境保護の観点からハンダ使用量の低減化が求められている現状において好ましくない。
【０００９】
一方、電池本体とこれに取り付けた端子板とで回路基板を挟み込む実装構造によるときは、電池の外装体と回路基板の導電部とを直に接触させるため、実装時の電池の配置構成が限定され、電子機器の薄型化や回路の省スペース化などの点でネックになる。そのほか、振動による接触不良も生じやすく、信頼性の点でも問題が出る。
【００１０】
そこで本発明の目的は、電子機器等の回路基板に電池を実装する際の上記問題点を解決し、ハンダ付け処理をしなくとも、電池本体から導出した端子板の導出端部分を回路基板の導電部に圧入するだけで簡単かつ確実に取り付けられる端子板付き電池を提供することにある。
【００１１】
【課題を解決するための手段】
本発明の端子板付き電池は、図１ないし図４に示すごとく、電池本体２と、回路基板５の導電部６に電池本体２を電気的に接続するための端子板７とを備えている。端子板７は、電池本体２側につながる基端部と、電池本体２から導出されて導電部６に設けたスルーホール１３に圧入される導出端部分９とを含む。
【００１２】
本発明は、かかる端子板付き電池において、前記導出端部分９に、スルーホール１３内に臨む前記導電部６に接触する接触片１１を有し、導出端部分９をスルーホール１３に圧入したとき、接触片１１が弾性変形を受けて、その弾性復元力で導電部６に圧接するようにしたことを特徴とする（請求項１）。これによれば、スルーホール１３に導出端部分９を圧入するだけで、スルーホール１３内の導電部６に接触片１１が圧接することにより、導通性が図られるとともに、該当の圧接力で導出端部分９を回路基板５の導電部６に確りと抜け止め状に支持固定できる。
【００１３】
また、本発明は、図１ないし図４に示すごとく、上記形態の端子板付き電池において、前記導出端部分９が、前記導電部６に接触する接触片１１と、前記スルーホール１３に抜け止め状に係合する係合片１２とを備えていることを特徴とする（請求項２）。これによれば、接触片１１が導出端部分９と導電部６との導通性を図る役割をし、係合片１２がスルーホール１３に導出端部分９を確りと支持固定する役割を担う。この場合の接触片１１は必ずしもスルーホール１３内に圧入されることを要しない。
【００１４】
電池本体２としては、ボタン形やコイン形などの扁平形の電池が用いて好適である。一つの電池本体２には二つの端子板７・７を備えており、回路基板５上に電池本体２を配置した状態において、各端子板７が、電池本体２の上下面の負極と正極とにそれぞれ溶接固定されて水平方向に延びる水平腕８と、水平腕８の延出端から下向きに折り曲げられた導出端部分９とを有する（請求項３）。
【００１５】
そのうえで、端子板７の導出端部分９には、接触片１１が導出端部分９の前後厚み方向に突出するよう弾性変形可能に打ち出し形成されており、この接触片１１は、スルーホール１３に弾性変形を受けた状態で圧入され、接触片１１がこれ自体の弾性復元力でスルーホール１３に臨む導電部６に圧接している（請求項４）。このように、接触片１１が弾性復元力で導電部６に圧接していると、接触片１１と導電部６との導通性が良好に確保され、かつ回路基板５に電池本体２をガタつくことなく安定的に支持固定できることになる。
【００１６】
接触片１１は、上下縦長に形成し（請求項５）、そのうえで上下端が前記導出端部分９に両持ち梁状につながる形態を採ることができる（請求項６）。このように、接触片１１が両持ち梁状に形成されていると、接触片１１の弾性復元力、ひいてはスルーホール１３内の導電部６に対する圧接力を有効に確保できることになる。
【００１７】
更に具体的には、前記導出端部分９に、係合片１２が導出端部分９の前後厚み方向に突出するよう弾性変形可能に切り起こし形成されており、係合片１２は、これの下端が導出端部分９の下端につながっていて、上面側が導出端部分９から離れる向きに自由状態で突出しており、係合片１２は、これ自体が弾性変形することでスルーホール１３にこれの上方から圧入可能であり、スルーホール１３に導出端部分９を完全に圧入した状態において、係合片１２の上端が、図１に示すごとくスルーホール１３の下端の開口周縁に受け止められるようにすることができる（請求項７）。この係合片１２も、回路基板５に電池本体２を安定的に支持することに貢献する。
【００１８】
請求項７において、前記導出端部分９の幅方向の左右に、接触片１１を上下縦長に形成したうえで、導出端部分９には、両接触片１１・１１間の下方に上下縦長の前記係合片１２を形成することができる（請求項８）。
【００１９】
尤も、本発明においては、図５および図６に示すごとく端子板７の導出端部分９の下端に、係合片１２を上方に向けて折り返し形成し、スルーホール１３に導出端部分９を完全に圧入した状態において、係合片１２の上端が、スルーホール１３の下端の開口周縁に受け止められるようにしてもよい（請求項９）。
【００２０】
先の請求項７または請求項９において、スルーホール１３の下端の開口周縁には、導電部６を張り出し形成し、この導電部６の張り出し部分６ｃに、係合片１２の上端が受け止められるようにすることができる（請求項１０）。これによれば、導出端部分９と導電部６との導通性がより確実になる。
【００２１】
導出端部分９には、図２に示すごとく、これの前後厚み方向の一方に接触片１１が、他方に係合片１２がそれぞれ突出している（請求項１１）。これによれば、接触片１１の弾性復元力で導出端部分９が押されるので、係合片１２の上端がスルーホール１３の下端の開口周縁に確実に受け止められた状態によく維持されることになる。
【００２２】
更に、導出端部分９の左右幅方向の両端には、図３に示すごとくスルーホール１３の上端の開口周縁に受け止められるストッパー縁１４・１４が形成されている（請求項１２）。これによれば、ストッパー縁１４・１４がスルーホール１３の上端の開口周縁に受け止められるまで、導出端部分９をスルーホール１３に圧入すればよく、スルーホール１３に対して導出端部分９を常に過不足なく差し込むことができる。そのうえで、ストッパー縁１４・１４は、回路基板５に電池本体２を安定的に支持することにも貢献する。
【００２３】
接触片１１は、図７および図８に示すごとく、導出端部分９の前後厚み方向の一方に打ち出し形成されて前後厚み方向に弾性変形可能な中央のばね板部１５と、中央のばね板部１５の左右幅方向の両外側において導出端部分９の前後厚み方向の他方に打ち出し形成されて前後厚み方向に弾性変形可能な左右のばね板部１６・１６とを含む形態にすることができる（請求項１３）。
【００２４】
更に図７および図８に示すごとく、端子板７の導出端部分９は、左右幅方向の中央に配された前記接触片１１と、該接触片１１の左右幅方向の両外側に配された係合片１２・１２とを含み、各係合片１２が左右幅方向に弾性変形可能であり、各係合片１２が、スルーホール１３に弾性変形を受けた状態で差し込まれ、各係合片１２がこれ自体の弾性復元力でスルーホール１３に対して上下方向へは抜け止め状に係合するようにしてもよい（請求項１４）。
【００２５】
請求項１４の各係合片１２が、スルーホール１３に臨む前記導電部６に接触していると（請求項１５）、導出端部分９と導電部６との導通性を更に確実に確保できることになる。
【００２６】
その各係合片１２は、下方に向けて片持ち状に連出されており、各係合片１２の下端に、図７（ｂ）に示すごとくスルーホール１３の下端の開口周縁に引っ掛かる係止部２２を形成することができる（請求項１６）。これによれば、スルーホール１３に差し込んだ導出端部分９が上方に抜き外れるのをよく防止できる。
【００２７】
また、本発明は、図９および図１０に示すごとく、電池本体２と、該電池本体２を回路基板５の導電部６ａ・６ｂに電気的に接続するための二つの端子板７ａ・７ｂとからなり、一方の端子板７ｂの導出端部分９が回路基板５に対して電池本体２を固定する端子板付き電池であって、一方の端子板７ｂの導出端部分９が、回路基板５をその表裏両面側から挟持する挟持部３４・３５を備えており、一方の挟持部３４に、回路基板５の導電部６ｂと接触する接触部が設けられていることを特徴とする（請求項１７）。
【００２８】
そのうえで、前記導出端部分９の他方の挟持部３５には、図９および図１０に示すごとく、回路基板５に係合することにより、回路基板５に対する電池本体２の位置決めを図る係合部３７が設けられている（請求項１８）。
【００２９】
また、本発明は、図１１および図１２に示すごとく、電池本体２と、該電池本体２を回路基板５の導電部６ａ・６ｂに電気的に接続するための端子板７ａ・７ｂとからなる端子板付き電池であって、前記端子板７ａ・７ｂは、前記回路基板５の導電部６ａ・６ｂと接触して導電接続される接触部４２・４４を有し、前記接触部４２・４４には、貫通孔４３・４５または切り欠きが設けられており、前記貫通孔４３・４５または切り欠きに挿通されるリベット４０・４０により、前記回路基板５に前記端子板７ａ・７ｂが固定されていることを特徴とする（請求項１９）。
【００３０】
【発明の実施の形態】
（第１実施例）図１ないし図４は本発明の第１実施例を示しており、扁平な電池１としてコイン形リチウム電池を用いた。電池１は、ひとつの電池本体２に二つの端子板７・７を備えている。各端子板７・７の基端部は、電池本体２の上下の正負極にそれぞれ溶接固定されている。
【００３１】
電池本体２は、上面に開口部を有する有底筒状の電池ケース３と、この開口部を密閉状に封する蓋部４とからなり、電池ケース３を正極とし、蓋部４を負極としている。
【００３２】
端子板７・７は、回路基板５に設けられた２か所の導電部６・６と、電池本体２の上下の正負極との間を電気的に接続するとともに、この電池本体２を回路基板５に対して遊動不能に固定保持する機能を持つ。電池本体２は回路基板５上に両端子板７・７を介して僅かに浮き離れた状態で配置する。
【００３３】
各端子板７は、電池本体２の上下面の負極と正極とにそれぞれ溶接固定されて前後の水平方向に延びる水平腕８と、この水平腕８の延出端から下向きに折り曲げられた導出端部分９とが一体に形成された側面視で略Ｌ字形のプレス成形品である。なお、電池本体２の正極につながる端子板７は、水平腕８の延出端を上方にいったん持ち上げたのち、水平腕８の延出端に下向きの導出端部分９がつながっている。
【００３４】
各端子板７の導出端部分９には、幅方向の左右に一対の接触片１１・１１が導出端部分９の前後厚み方向に突出するよう弾性変形可能に打ち出し形成されている。
【００３５】
各接触片１１は所定の左右幅を有する上下縦長に形成されており、上下端が導出端部分９に両持ち梁状につながっている。とくに、接触片１１の下端部には、上がり傾斜のガイド部１１ａが曲げ形成されており、接触片１１の上端部１１ｂも下り傾斜状に曲げ形成されている。
【００３６】
更に、各端子板７の導出端部分９には、左右の接触片１１・１１間の下方に弾性変形可能な係合片１２が導出端部分９の前後厚み方向に突出するよう上向きに切り起こし形成されている。
【００３７】
この係合片１２は左右小幅で上下縦長に形成されており、これの下端が導出端部分９に片持ち状につながっている。係合片１２は、下端部１２ａが斜め上方に立ち上がる形状に形成され、上端部１２ｂが真っ直ぐ上向きの垂直状に形成されている。
【００３８】
接触片１１と係合片１２とは、接触片１１が前後厚み方向の一方に突出するとき、係合片１２が導出端部分９の他方に突出する関係にある。
【００３９】
回路基板５の導電部６にはスルーホール１３が上下貫通状に設けられている。すなわち、スルーホール１３の内周面が導電部６になっている。スルーホール１３の上下端の開口周縁には導電部６が張り出し形成されている。符号６ｃは、この導電部６の張り出し部分である。スルーホール１３は、平面視で左右方向に長く、前後方向に短い略四角形状を呈している。
【００４０】
次に、回路基板５に対する端子板付き電池１の装着要領を説明すると、電池本体２に一体化された各端子板７の導出端部分９を回路基板５のスルーホール１３にこれの上方から圧入する。このとき、接触片１１は傾斜状の下端ガイド部１１ａでスルーホール１３内にスムーズに嵌合案内され、係合片１２も傾斜下端部１２ａでスルーホール１３内にスムーズに嵌合案内される。そして、接触片１１および係合片１２は、スルーホール１３内の前後の導電部６の内面に接してそれぞれ導出端部分９側に弾性変形する。
【００４１】
導出端部分９の左右幅方向の両端には、スルーホール１３に対する導出端部分９の差し込み限界を規制するストッパー縁１４・１４が段付き状に形成されている。従って、導出端部分９はスルーホール１３に対してこれの上端の開口周縁にストッパー縁１４・１４が受け止められるまで完全に圧入することになる。
【００４２】
スルーホール１３に導出端部分９を完全に圧入すると、係合片１２の上端がスルーホール１３の下方に出て元の突出状態に弾性復元し、係合片１２の上端がスルーホール１３の下端の開口周縁に受け止められる。
【００４３】
スルーホール１３の下端の開口周縁には、導電部６の張り出し部分６ｃが形成されているので、係合片１２の上端は導電部６の張り出し部分６ｃで受け止められることになる。これにて、導出端部分９がスルーホール１３の上方へ抜け出ることが規制される。
【００４４】
スルーホール１３に導出端部分９を圧入した状態において、左右一対の各接触片１１は、弾性変形を受けているので、その弾性復元力で接触片１１の上下端部１１ａ・１１ｂ間の中間平坦部分１１ｃがスルーホール１３内に臨む導電部６に対して全面的に圧接する。
【００４５】
とくに接触片１１は、これの上下端が導出端部分９につながる両持ち梁状に形成されているので、スルーホール１３内の導電部６に対する接触片１１の上記圧接力は強力になる。したがって、この圧接力のみにてもスルーホール１３に対して導出端部分９をガタつきなく、かつ不用意に上下方向へは位置ずれすることなく確実に保持固定できる。そのうえで、各端子板７の導出端部分９は、回路基板５の導電部６に対して接触片１１・１１で電気的に導通状態となる。ストッパー縁１４・１４および係合片１２の上端も導通状態を補助する。
【００４６】
回路基板５から端子板付き電池１を離脱させる必要があるときは、係合片１２の上端を指先などでつかんで端子板７の導出端部分９に向かって撓み変形させることにより、係合片１２の上端をスルーホール１３内に導き、そのまま導出端部分９を引き上げればよい。
【００４７】
（第２実施例）図５および図６は請求項９に対応する本発明の第２実施例を示す。この第２実施例では、左右の接触片１１が端子板７の導出端部分９から切り起こし形成されている。すなわち各接触片１１は下端が導出端部分９に片持ち状につながっていて、上端側が導出端部分９から離れる向きに突出している。これによれば、スルーホール１３にこれの上方から導出端部分９を圧入したとき、接触片１１が導出端部分９側に弾性変形し、その弾性復元力で接触片１１の上端部分がスルーホール１３に臨む前後の導電部６に圧接する。
【００４８】
また、各端子板７の導出端部分９の下端には、左右の両接触片１１・１１間において係合片１２が上向きに折り返し形成されている。これによれば、スルーホール１３に導出端部分９を完全に圧入した状態において、係合片１２の上端が、スルーホール１３から抜け出て、これの下端の開口周縁（導電部６の張り出し部分６ｃ）に受け止められる。この状態は係合片１２の反対側に突出する接触片１１の弾発作用で維持される。
【００４９】
第２実施例のその他の点は、先の第１実施例と実質的に同じであるから、同一部材には同一符号を付して説明を省略する。第２実施例での係合片１２は弾性変形することを要しないが、係合片１２を断面Ｖ字状に折り曲げ形成し、係合片１２が第１実施例と同様に前後方向へ弾性変形するようにしてもよい。
【００５０】
端子板７の導出端部分９に左右一対の接触片１１・１１が設けられていると、回路基板５に対して導出端部分９、ひいては電池本体２をガタつくことなくバランスをとって支持固定するに有利である。しかし、本発明はこの実施形式に限られず、スルーホール１３内の導電部６に接触する接触片１１は１個でも３個以上であってもよい。
【００５１】
導出端部分９には、接触片１１が片持ち状にほぼ水平姿勢で折り曲げ連出されており、この接触片１１がスルーホール１３の上端開口周縁に設けた導電部６にばね性をもって弾性接触し、これのみにて導出端部分９と導電部６との導通性を図る形態でもよい。
【００５２】
本発明の係合片１２は、導出端部分９の左右幅方向の両端に設けられていてもよい。その場合は、左右の係合片１２・１２間に前記接触片１１が存在する形態を採ることができる。
【００５３】
（第３実施例）図７および図８は本発明の第３実施例を示す。図７（ａ）は、コイン形リチウム電池１の側面図、図７（ｂ）は、図７（ａ）のＣ−Ｃ縦断面図、図８は図７（ｂ）のＤ−Ｄ線断面図である。コイン形リチウム電池１は、電池本体２と、この電池本体２の正負極に溶接固定された端子板７・７とからなる。電池本体２は、上面に開口部を有する有底筒状の電池ケース３と、この開口部を密閉状に封する蓋部４とからなり、電池ケース３を正極とし、蓋部４を負極とする。
【００５４】
端子板７・７は、回路基板５に設けられた導電部６と電池本体２の正負極を電気的に接続するとともに、この電池本体２を回路基板５に対して遊動不能に固定保持する。各端子板７は、電池本体２の上下面に溶接固定されて前後水平方向に伸びる水平腕８と、水平腕８の遊端から下向きに折り曲げられた導出端部分９とが一体に形成された、側面視で略Ｌ字形のプレス成形品である。
【００５５】
図７および図８に示すように、導出端部分９は、水平腕８の折り返し部分から下方向に向かって片持ち状に連出される中央の接触片１１と、この接触片１１を挟むように下方向に向かって片持ち状に連出されて左右方向に弾性変形可能な一対の係合片１２・１２とからなる。そして、接触片１１および係合片１２が、回路基板５に設けられたスルーホール１３に差し込み装着されることにより、導出端部分９は、スルーホール１３の内壁面に形成された導電部６に接触して、導電部６と電池本体２の正負極を電気的に接続するとともに、回路基板５に抜け止め状に保持されて、電池本体２を遊動不能に固定保持する。
【００５６】
図８に示すように、スルーホール１３は、平面視で左右方向に長く、前後方向に短い略四角形状を呈しており、その内周面は上下の開口寸法が同一寸法のストレート状に形成されている。スルーホール１３の内周面の全面には、導電部６が形成されている。
【００５７】
図７および図８に示すごとく、接触片１１は、電池本体２側、すなわち後方向に膨出状に成形されて、前後方向に弾性変形可能な中央のばね板部１５と、前方向に膨出状に成形されて、前後方向に弾性変形可能な左右のばね板部１６・１６とからなる。これらのばね板部１５・１６は、上側の連出基端部１７と下側の連出端部１８との間で両持ち状に支持されている。ばね板部１５・１６の前後方向の対向間隔寸法は、スルーホール１３の前後方向の開口寸法よりも僅かに大きく設定されており、スルーホール１３内に差し込み装着されたとき、ばね板部１５・１６はスルーホール１３の前後壁に押圧状に接触する。
【００５８】
係合片１２は、上端部から下方向に向かって連出される基端部２０と、基端部２０の左右の外壁面が肉盗みされてなる薄肉部２１と、薄肉部２１の連出端に一体に設けられて左右外方向に突出する係合部２２とからなる。係合部２２の左右の外壁面は、上広がりのテーパー状のガイド面２３となっている。これら係合片１２・１２は、接触片１１の連出基端部１７の左右外側の離れた位置から延びており、係合片１２・１２の左右の内面とこれに対向する接触片１１の外面との間に、係合片１２・１２が接触片１１の方向へ弾性変形することを許す変形隙間Ｇが確保されている。すなわち、係合片１２と接触片１１とは僅かな隙間を介して近接対向しており、係合片１２は接触片１１と分離独立して左右方向に弾性変形できる。
【００５９】
図７（ｂ）に示すごとく、薄肉部２１の左右の外壁面どうしの間隔寸法は、スルーホール１３を形成する左右の内壁面の対向間隔寸法と略同等に設定されている。従って、係合部２２は、それの左右方向の薄肉部２１と比較した厚み分だけ、スルーホール１３の内壁面よりも左右外側に突出する。基端部２０と係合部２２との上下間隔寸法、すなわち薄肉部２１の上下寸法は、スルーホール１３の周縁における回路基板５の厚み寸法と略同等に設定されている。
【００６０】
端子板付き電池１の装着要領を説明する。まず、係合部２２のガイド面２３をスルーホール１３の左右内壁の上端に当接させながら、係合片１２をスルーホール１３内に差し込んでいくと、係合片１２はいったん変形隙間Ｇ方向に弾性変形する。そして、スルーホール１３に導出端部分９を完全に差し込み装着された図７（ｂ）の状態において、係合片１２の弾性復元力で係合部２２がスルーホール１３から左右方向に突出して、係合部２２がスルーホール１３の下端周縁に係る回路基板５に係合する。この係合部２２とスルーホール１３の下端周縁の回路基板５との係合により、スルーホール１３から端子板７が不用意に抜け出るのを阻止できる。すなわち、係合片１２がスルーホール１３の周縁に係る回路基板５に引っ掛かることにより、端子板７の上方への抜け止めが図られる。
【００６１】
また、係合片１２をスルーホール１３内に装着したとき、端子板７は薄肉部２１の上下長さの範囲内で上下方向の移動が規制される。具体的には、基端部２０の薄肉部２１との段差部分が、スルーホール１３の上端周縁の回路基板５で受け止められ、これにて端子板７は下方へ沈み込むことなくスルーホール１３内で確実に装着できる。また、係合部２２がスルーホール１３の下端周縁の回路基板５に係合していることで上方への抜け止めが図られている。かくして、端子板７が外部衝撃を受けてスルーホール１３から不用意に抜け外れたり、位置ズレしたりすることを確実に阻止できる。薄肉部２１の左右外側面が、スルーホール１３の左右方向の内壁面と当接することで、端子板７が左右方向に位置ズレすることもない。
【００６２】
加えて、係合片１２はこれ自体が弾性変形できるようにしてあるので、係合部２２をスルーホール１３内に先入れしたのちも、端子板７をスルーホール１３内に押し込むことにより、係合部２２はスルーホール１３の左右側面を滑り移動しながらスルーホール１３に貫通状に係合できる。従って、スルーホール１３に対する端子板付き電池１の装着作業が容易に行え、必要に応じて逆の手順で端子板付き電池１を簡単に取り外すことができる。すなわち、端子板付き電池１を回路基板５から離脱させる場合には、係合片１２の係合部２２を指先でつかんで、接触片１１の方向に撓み変形させて、該係合部２２の回路基板５に対する係合を解除してから、端子板７を上方向に持ち上げればよい。
【００６３】
また、スルーホール１３に端子板７を差し込んでいくと、接触片１１を構成するばね板部１５・１６が、その前後方向の対向間隔寸法が小さくなるように弾性変形する。そして、スルーホール１３に導出端部分９を完全に差し込み装着した図７（ａ）および図８の状態において、接触片１１は、ばね板部１５・１６の弾性復元力でスルーホール１３の前後方向の内壁面に押圧状に係合する。このばね板部１５・１６とスルーホール１３の内壁面との押圧係合により、端子板７と導電部６との電気的な導通が確保され、同時に前後方向の位置ズレを阻止できる。
【００６４】
（第４実施例）図９および図１０は本発明に係る端子板付き電池の第４実施例を示す。この場合の端子板付き電池１は、電池本体２と、電池本体２の上面に溶接固定された負極端子板７ａと、電池本体２の下面に溶接固定された正極端子板７ｂとからなり、回路基板５の周縁に実装・固定される。
【００６５】
負極端子板７ａは、後方向に延びる水平腕３０と、水平腕３０の遊端に逆へ字状に折り曲げ形成されて回路基板５の導電部６ａに接する接触部３１とが一体に成形されたプレス成形品であり、水平腕３０の基端部が電池本体２の上面に溶接固定される。接触部３１の導電部６ａに対する接触部分は平坦面とされている。
【００６６】
図１０において正極端子板７ｂは、電池本体２の下面を受けるベース壁３２と、ベース壁３２の後端左右から上方側へ折り起こした左右一対の支持腕３３・３３と、各支持腕３３の上端に連続して斜め下向きに折り曲げられた上係合腕３４と、ベース壁３２の後端中央から後方向に連出された下係合腕３５と、下係合腕３５の遊端から斜め下向きに折り曲げられた解除片３６とが一体に成形されたプレス成形品であり、ベース壁３２の上面に電池本体２を溶接固定してある。下係合腕３５の上面には、固定用の突起（係合部）３７が切り起こし形成されている。支持腕３３の左右の対向間隔寸法は、負極端子板７ａの左右幅寸法よりも大きく設定されており、上下の係合腕３４・３５の対向間隔寸法は、回路基板５の厚み寸法よりも僅かに小さく設定されている。上下の係合腕３４・３５は、上下方向に僅かに弾性変形可能であり、これら係合腕３４・３５で本発明における導出端部分および挟持部を構成する。
【００６７】
図９（ａ）・（ｂ）において、符号１３は、回路基板５の周縁近傍に形成された略四角形状のスルーホールを示す。このスルーホール１３と回路基板５の周縁との間における回路基板５の上面には、負極用の導電部６ａを設けてあり、この負極用の導電部６ａの左右両側には、正極用の導電部６ｂを設けてある。すなわち、回路基板５の上面には、左右方向に並列状に、正負極用の導電部６ａ・６ｂを形成してある。スルーホール１３の左右の幅寸法は、先の突起３７のそれよりも僅かに大きく設定されている。
【００６８】
以上のような構成からなる端子板付き電池１においては、正極端子板７ｂの上下の係合腕３４・３５の間に回路基板５を差し込むことで、回路基板５に対する電池１の実装がなされる。つまり、上下の係合腕３４・３５でクリップ状に回路基板５を上下方向から挟持することで、回路基板５に対する電池１の実装がなされる。このとき、係合腕３４・３５の弾性力により電池１が回路基板に対して固定されるとともに、導電部６ｂに上係合腕３４が接触して、電池本体２の正極と回路基板５との導電接続がなされる。同時に下係合腕３５に設けられた固定用の突起３７が、回路基板５に設けられたスルーホール１３に入り込み、これで電池１は回路基板５に抜け止め状に係合保持される。一方、導電部６ａに、負極端子板７ａの接触部３１が接触することにより、電池本体２の負極と回路基板５との導電接続がなされる。
【００６９】
端子板付き電池１を回路基板５から離脱させる場合には、下係合腕３５の解除片３６を指先でつかんで、下係合腕３５を下方向に撓み変形させて、突起３７のスルーホール１３に対する係合を解除してから、電池１を前方向に引き出せばよい。
【００７０】
（第５実施例）図１１および図１２は本発明に係る端子板付き電池の第５実施例を示す。ここでの端子板付き電池１は、電池本体２と、電池本体２の上面に溶接固定された負極端子板７ａと、電池本体２の下面に溶接固定された正極端子板７ｂとからなり、リベット４０・４０を用いて回路基板５に対して固定・実装される。
【００７１】
負極端子板７ａは、電池本体２から外方向に延びる水平部４１と、回路基板５にリベット固定される受板（接触部）４２とを階段状に折り曲げたプレス成形品であり、受板４２の板面中央にリベット４０用の貫通孔４３が形成されている。正極端子板７ｂは、長尺平板状の金属板であり、遊端部（接触部）４４の中央にリベット４０用の貫通孔４５が形成されている。
【００７２】
回路基板５には、電池本体２を収容する電池室４６を貫通状に設けてあり、電池室４６の周縁にかかる回路基板５の正負極端子板７ａ・７ｂとの対向壁面に、導電部６ａ・６ｂが埋設状に形成されている。各導電部６ａ・６ｂおよびそれに対応する回路基板５には、リベット４０用の貫通孔４７が形成されている。
【００７３】
端子板付きの電池１を回路基板に実装・固定する場合には、まず、電池室４６内に正極端子板７ｂを挿入し、電池１を回路基板５に仮り組みする。次に、端子板７ａ・７ｂおよび導電部６ａ・６ｂの貫通孔４３・４５・４７を位置合わせしてから、これら貫通孔４３・４５・４７にリベット４０を挿通し、最後に貫通孔４３・４４から突出しているリベット４０の先端部を扁平に変形させて、端子板７ａ・７ｂを回路基板５にかしめ固定する。このとき、回路基板５に形成された導電部６ａ・６ｂと端子板７ａ・７ｂの受板４２および遊端部４４とがそれぞれ接触して、電池本体２と回路基板５との導電接続がなされる。
【００７４】
上記実施例においては、正極端子板および負極端子板のどちらも本発明の端子板構成を有するものであるが、一方の端子板のみ上記構成とするのでもよく、また、電池の配置も例示のものに限定されない。
【００７５】
本発明において、端子板の材質は、特に限定されるものではなく、鉄、銅、ニッケル、アルミニウム、チタンなどの金属材料やその合金（ステンレス鋼、真鍮など）、あるいは前記部材のクラッド板などのように複数の材質が複合化されたものなどを挙げることができる。さらに、前記部材の表面にニッケルメッキ、錫メッキ、ハンダメッキ、銅メッキ、金メッキなどのメッキを施したものであってもよい。ただし、電池の外装缶に端子板が溶接により取り付けられる場合は、外装缶との溶接性を考慮して端子板の材質を選択するのが望ましく、外装缶がステンレス鋼である場合は、端子板の材質はステンレス鋼あるいはニッケルであるのが好ましく、外装缶がアルミニウムあるいはその合金である場合は、端子板の材質もアルミニウムあるいはその合金を選択するのが好ましい。
【００７６】
【発明の効果】
以上みたとおり、本発明の端子板付き電池によれば、電池を電子機器の回路基板へ実装するにあたり、ハンダ付け処理をしなくても、電池本体の回路基板への取り付けが可能になる。とくに回路基板のスルーホールに端子板の導出端部分を圧入するだけで、回路基板に電池本体を導通状態に接続できるとともに、簡単かつ確実に支持固定できる。
【図面の簡単な説明】
【図１】本発明に係る端子板付き電池の第１実施例を示す縦断側面図
【図２】第１実施例の端子板を示す斜視図
【図３】図１におけるＡ−Ａ線断面図
【図４】図３におけるＢ−Ｂ線断面図
【図５】本発明に係る端子板付き電池の第２実施例を示す側面図
【図６】第２実施例の端子板を示す斜視図
【図７】本発明に係る端子板付き電池の第３実施例を示しており、図７（ａ）は縦断側面図、図７（ｂ）は図７（ａ）におけるＣ−Ｃ縦断面図
【図８】図７（ｂ）におけるＤ−Ｄ線断面図
【図９】本発明に係る端子板付き電池の第４実施例を示しており、図９（ａ）は側面図、図９（ｂ）は要部の平面図
【図１０】第４実施例の分解斜視図
【図１１】本発明に係る端子板付き電池の第５実施例を示す側面図
【図１２】第５実施例の分解斜視図
【符号の説明】
１端子板付き電池
２電池本体
５回路基板
６導電部
７端子板
８水平腕
９導出端部分
１１接触片
１２係合片
１３スルーホール[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a battery with a terminal plate. More specifically, the present invention relates to a battery with a terminal plate that can be attached to a circuit board of an electronic device or the like without performing a soldering process.
[0002]
[Prior art]
Button-shaped or coin-shaped flat batteries, or square or cylindrical batteries are alkaline dry batteries, lithium batteries, lithium secondary batteries, primary batteries typified by alkaline storage batteries, any of secondary batteries, It is widely used as a main power supply for various electronic devices and a memory backup power supply.
[0003]
When mounting the battery on a circuit board of an electronic device, a terminal plate that enables soldering to the circuit board is connected to the battery, and a reflow furnace is used together with other electronic components to increase the efficiency of the manufacturing process. Soldering to a circuit board has been considered.
[0004]
However, the battery is heated when passing through the reflow furnace, and for a short time, the temperature of the battery reaches a high temperature exceeding, for example, 150 ° C., so that a physical change or a chemical change occurs in the components of the battery, and the battery is heated. This causes problems such as a decrease in hermeticity, a decrease in discharge characteristics, an internal short circuit, and a decrease in cycle characteristics. On the other hand, if only the battery is manually soldered separately from the other electronic components in order to protect the battery, the work efficiency is significantly reduced, so that passing through a reflow furnace does not adversely affect the battery characteristics and the like. A battery with high heat resistance has been demanded. In particular, in a lithium battery in which metallic lithium having a low melting point is used for the negative electrode and a highly volatile organic solvent is used as an electrolyte solvent, there has been a strong demand for technical development for improving heat resistance.
[0005]
In response to such demands, batteries using a highly heat-resistant packing or using an additive that improves the storability at high temperatures have been proposed (see Patent Documents 1 and 2). According to this, the heat resistance of the battery is increased, and a battery that does not hinder passage through the reflow furnace can be obtained.
[0006]
On the other hand, the mounting structure of the battery, which stops the fixing of the battery by soldering and sandwiches the circuit board between the battery body and the terminal board attached to it, thereby fixing the battery on the circuit board and facilitating battery replacement and maintenance Has also been proposed (see Patent Document 3). According to this form, the battery can be mounted without soldering.
[0007]
[Patent Document 1]
JP-A-8-153500 (paragraph number 0002-0008)
[Patent Document 2]
JP-A-2000-323171 (paragraph number 0005-0007)
[Patent Document 3]
JP-A-10-64490 (paragraph number 0002-0005)
[0008]
[Problems to be solved by the invention]
However, in the form of imparting heat resistance to the battery itself, if the packing of the battery is made of a material having high heat resistance in order to cope with the passage through the reflow furnace, the material cost is significantly increased as compared with a material such as a general-purpose polyolefin. . Further, when an additive is added to the electrolytic solution, the discharge characteristics are reduced to a certain extent, and the available electronic devices are limited. Even if the additive is added, it is necessary to use a material having high heat resistance similarly to other constituent members, which also causes a significant increase in cost. In the first place, the use of solder for conductive connection with the circuit board has the problem of the effect of lead contained in the solder on the environment, and in the current situation where reduction in the amount of solder used is required from the viewpoint of environmental protection. Not preferred.
[0009]
On the other hand, in the case of the mounting structure in which the circuit board is sandwiched between the battery body and the terminal board attached to the battery body, the arrangement of the battery at the time of mounting is limited because the battery outer package and the conductive part of the circuit board are in direct contact. This is a bottleneck in terms of reducing the thickness of electronic devices and circuit space. In addition, poor contact due to vibration is likely to occur, and there is a problem in reliability.
[0010]
Therefore, an object of the present invention is to solve the above-described problem when mounting a battery on a circuit board of an electronic device or the like, and to attach a lead end portion of a terminal plate led out of a battery body to a circuit board without soldering. An object of the present invention is to provide a battery with a terminal plate that can be easily and reliably attached by simply press-fitting a conductive portion.
[0011]
[Means for Solving the Problems]
As shown in FIGS. 1 to 4, the battery with a terminal plate of the present invention includes a battery main body 2 and a terminal plate 7 for electrically connecting the battery main body 2 to the conductive portion 6 of the circuit board 5. . The terminal plate 7 includes a base end portion connected to the battery main body 2 side, and a lead end portion 9 led out of the battery main body 2 and pressed into a through hole 13 provided in the conductive portion 6.
[0012]
The present invention provides such a battery with a terminal plate, wherein the lead-out end portion 9 has a contact piece 11 that contacts the conductive portion 6 facing the inside of the through-hole 13, and the lead-out end portion 9 is press-fitted into the through-hole 13. The contact piece 11 is elastically deformed and is brought into pressure contact with the conductive portion 6 by its elastic restoring force (claim 1). According to this, merely by press-fitting the lead-out end portion 9 into the through hole 13, the contact piece 11 is pressed into contact with the conductive portion 6 in the through hole 13, thereby achieving conductivity and drawing out with a corresponding pressing force. The end portion 9 can be securely supported and fixed to the conductive portion 6 of the circuit board 5 in a retaining shape.
[0013]
Further, as shown in FIGS. 1 to 4, in the battery with the terminal plate according to the present invention, the lead-out end portion 9 is prevented from coming off by the contact piece 11 contacting the conductive portion 6 and the through hole 13. And an engagement piece 12 that engages in a shape (claim 2). According to this, the contact piece 11 plays a role of ensuring conductivity between the lead-out end portion 9 and the conductive portion 6, and the engagement piece 12 plays a role of securely supporting and fixing the lead-out end portion 9 to the through hole 13. In this case, the contact piece 11 does not necessarily need to be pressed into the through hole 13.
[0014]
As the battery body 2, a flat battery such as a button shape or a coin shape is preferably used. One battery main body 2 is provided with two terminal plates 7. When the battery main body 2 is arranged on the circuit board 5, each terminal plate 7 is connected to the negative and positive electrodes on the upper and lower surfaces of the battery main body 2. A horizontal arm 8 which is welded and fixed to the horizontal arm and extends in the horizontal direction, and a leading end portion 9 bent downward from the extending end of the horizontal arm 8 (claim 3).
[0015]
In addition, a contact piece 11 is formed on the lead-out end portion 9 of the terminal plate 7 so as to be elastically deformable so as to protrude in the front-rear thickness direction of the lead-out end portion 9. The contact piece 11 is pressed into contact with the conductive portion 6 facing the through hole 13 by its own elastic restoring force (claim 4). As described above, when the contact piece 11 is pressed against the conductive portion 6 by the elastic restoring force, good conductivity between the contact piece 11 and the conductive portion 6 is ensured, and the battery main body 2 is loosened on the circuit board 5. It is possible to stably support and fix without any problem.
[0016]
The contact piece 11 is formed to be vertically long (Claim 5), and the upper and lower ends can be connected to the leading end portion 9 in a doubly supported manner (Claim 6). Thus, when the contact piece 11 is formed in a doubly-supported beam shape, the elastic restoring force of the contact piece 11 and the press-contact force against the conductive portion 6 in the through hole 13 can be effectively secured.
[0017]
More specifically, the engaging piece 12 is cut and raised in the leading end portion 9 so as to be elastically deformable so as to protrude in the front-rear thickness direction of the leading end portion 9. Is connected to the lower end of the lead-out end portion 9, and the upper surface protrudes in a free state in a direction away from the lead-out end portion 9. When the leading end portion 9 is completely pressed into the through hole 13, the upper end of the engagement piece 12 can be received by the opening periphery of the lower end of the through hole 13 as shown in FIG. 1. (Claim 7). This engagement piece 12 also contributes to stably supporting the battery body 2 on the circuit board 5.
[0018]
The contact piece 11 is vertically formed vertically on the left and right sides in the width direction of the lead-out end part 9, and the lead-out end part 9 has a vertically long part below the contact pieces 11. The engagement piece 12 can be formed (claim 8).
[0019]
However, in the present invention, as shown in FIGS. 5 and 6, the engaging piece 12 is formed to be folded upward at the lower end of the leading end portion 9 of the terminal plate 7, and the leading end portion 9 is completely formed in the through hole 13. The upper end of the engaging piece 12 may be received by the peripheral edge of the opening at the lower end of the through-hole 13 in a state where the press-fitting is performed.
[0020]
In claim 7 or claim 9, the conductive portion 6 is formed so as to protrude from the periphery of the opening at the lower end of the through hole 13, and the protruding portion 6c of the conductive portion 6 receives the upper end of the engagement piece 12. (Claim 10). According to this, the conductivity between the lead-out end portion 9 and the conductive portion 6 is further ensured.
[0021]
As shown in FIG. 2, the leading end portion 9 has a contact piece 11 protruding on one side in the front-rear thickness direction and an engaging piece 12 protruding on the other side. According to this, the leading end portion 9 is pushed by the elastic restoring force of the contact piece 11, so that the upper end of the engaging piece 12 is well maintained in the state of being securely received by the opening periphery of the lower end of the through hole 13. become.
[0022]
Further, at both ends in the left-right width direction of the leading end portion 9, stopper edges 14, 14 received on the peripheral edge of the opening at the upper end of the through hole 13 are formed as shown in FIG. 3. According to this, the lead-out end portion 9 may be press-fitted into the through-hole 13 until the stopper edge 14 is received by the opening peripheral edge at the upper end of the through-hole 13. It can be inserted without excess or shortage. In addition, the stopper edges 14 contribute to stably supporting the battery body 2 on the circuit board 5.
[0023]
As shown in FIGS. 7 and 8, the contact piece 11 is formed on one of the leading end portions 9 in the front-rear thickness direction and is formed so as to be elastically deformable in the front-rear thickness direction. 15, left and right width directions of both sides of the leading end portion 9 may be formed on the other side in the front-rear thickness direction, and may include left and right spring plate portions 16, 16 which are elastically deformable in the front-rear thickness direction. Claim 13).
[0024]
Further, as shown in FIGS. 7 and 8, the leading end portion 9 of the terminal plate 7 is provided with the contact piece 11 disposed at the center in the left-right width direction and on both outer sides of the contact piece 11 in the left-right width direction. Each of the engaging pieces 12 is elastically deformable in the left-right width direction, and each of the engaging pieces 12 is inserted into the through hole 13 while being elastically deformed. The piece 12 may be engaged with the through-hole 13 in the up-down direction by its own elastic restoring force in a vertically retaining manner.
[0025]
When each of the engagement pieces 12 of claim 14 is in contact with the conductive portion 6 facing the through hole 13 (claim 15), the conductivity between the lead-out end portion 9 and the conductive portion 6 can be more reliably ensured. become.
[0026]
Each engaging piece 12 is protruded downward in a cantilever manner, and is engaged with a lower end of each engaging piece 12 at a lower end of the through hole 13 as shown in FIG. 7B. The stop 22 can be formed (claim 16). According to this, it is possible to prevent the leading end portion 9 inserted into the through hole 13 from being removed upward.
[0027]
In addition, as shown in FIGS. 9 and 10, the present invention includes a battery body 2 and two terminal plates 7 a and 7 b for electrically connecting the battery body 2 to the conductive portions 6 a and 6 b of the circuit board 5. The terminal end portion 9 of the one terminal plate 7b is a battery with a terminal plate for fixing the battery body 2 to the circuit board 5, and the terminal end portion 9 of the one terminal plate 7b is connected to the circuit board 5. It is provided with holding portions 34 and 35 for holding from both the front and back sides, and one of the holding portions 34 is provided with a contact portion that contacts the conductive portion 6b of the circuit board 5 (claim 17). ).
[0028]
Then, as shown in FIGS. 9 and 10, the other holding portion 35 of the lead-out end portion 9 is engaged with the circuit board 5 so as to position the battery body 2 with respect to the circuit board 5. Is provided (claim 18).
[0029]
As shown in FIGS. 11 and 12, the present invention includes a battery main body 2 and terminal plates 7a and 7b for electrically connecting the battery main body 2 to the conductive portions 6a and 6b of the circuit board 5. In a battery with a terminal plate, the terminal plates 7a and 7b have contact portions 42 and 44 that are in contact with conductive portions 6a and 6b of the circuit board 5 and are conductively connected. Are provided with through holes 43, 45 or notches, and the terminal plates 7a, 7b are fixed to the circuit board 5 by rivets 40, 40 inserted into the through holes 43, 45 or notches. (Claim 19).
[0030]
BEST MODE FOR CARRYING OUT THE INVENTION
First Embodiment FIGS. 1 to 4 show a first embodiment of the present invention, in which a coin-type lithium battery is used as the flat battery 1. The battery 1 is provided with two terminal plates 7 on one battery main body 2. The base ends of the terminal plates 7 are welded and fixed to the upper and lower positive and negative electrodes of the battery body 2 respectively.
[0031]
The battery main body 2 includes a bottomed cylindrical battery case 3 having an opening on the upper surface, and a lid 4 for sealing the opening in a sealed manner. The battery case 3 serves as a positive electrode, and the cover 4 serves as a negative electrode. I have.
[0032]
The terminal plates 7.7 electrically connect the two conductive portions 6.6 provided on the circuit board 5 to the upper and lower positive and negative electrodes of the battery main body 2 and connect the battery main body 2 to the circuit. It has a function of fixedly holding the substrate 5 so that it cannot move freely. The battery main body 2 is arranged on the circuit board 5 in a state of being slightly separated from the circuit board 5 via the two terminal plates 7.
[0033]
Each terminal plate 7 has a horizontal arm 8 that is welded and fixed to the negative electrode and the positive electrode on the upper and lower surfaces of the battery main body 2 and extends in the front-rear horizontal direction, and a leading end bent downward from the extending end of the horizontal arm 8. This is a substantially L-shaped press-formed product in a side view in which the portion 9 is integrally formed. In the terminal plate 7 connected to the positive electrode of the battery body 2, the extension end of the horizontal arm 8 is once lifted up, and the extension end of the horizontal arm 8 is connected to a downward leading end portion 9.
[0034]
A pair of contact pieces 11 are formed on the leading end portion 9 of each terminal plate 7 so as to be elastically deformable so as to project in the front-rear thickness direction of the leading end portion 9 on the left and right in the width direction.
[0035]
Each contact piece 11 is formed in a vertically long shape having a predetermined left-right width, and upper and lower ends thereof are connected to the leading end portion 9 in a doubly supported manner. In particular, a guide portion 11a having an upward slope is formed at a lower end portion of the contact piece 11, and an upper end portion 11b of the contact piece 11 is also formed so as to be bent downward.
[0036]
Further, an engaging piece 12 that can be elastically deformed downward between the left and right contact pieces 11 and 11 is cut and raised upward at the leading end portion 9 of each terminal plate 7 so as to project in the front-rear thickness direction of the leading end portion 9. Is formed.
[0037]
The engaging piece 12 is formed to have a small left and right width and a vertically long shape, and the lower end thereof is connected to the leading end portion 9 in a cantilever manner. The engagement piece 12 is formed in a shape in which a lower end portion 12a rises obliquely upward, and an upper end portion 12b is formed in a vertically straight vertical shape.
[0038]
The contact piece 11 and the engagement piece 12 have a relationship in which when the contact piece 11 protrudes in one of the front and rear thickness directions, the engagement piece 12 protrudes to the other of the lead-out end portions 9.
[0039]
A through hole 13 is provided in the conductive portion 6 of the circuit board 5 in a vertically penetrating manner. That is, the inner peripheral surface of the through hole 13 is the conductive portion 6. The conductive portion 6 is formed to protrude from the upper and lower ends of the through hole 13 around the opening. Reference numeral 6c denotes a projecting portion of the conductive portion 6. The through hole 13 has a substantially rectangular shape that is long in the left-right direction and short in the front-rear direction in plan view.
[0040]
Next, the procedure for mounting the battery 1 with a terminal plate on the circuit board 5 will be described. The lead-out end portion 9 of each terminal plate 7 integrated with the battery main body 2 is pressed into the through hole 13 of the circuit board 5 from above. I do. At this time, the contact piece 11 is smoothly fitted and guided into the through-hole 13 by the inclined lower end guide portion 11a, and the engaging piece 12 is also smoothly fitted and guided into the through-hole 13 by the inclined lower end portion 12a. Then, the contact piece 11 and the engagement piece 12 are in contact with the inner surfaces of the front and rear conductive portions 6 in the through-hole 13 and are elastically deformed toward the leading end portion 9 respectively.
[0041]
At both ends in the left-right width direction of the lead-out end portion 9, stopper edges 14, 14 for regulating the insertion limit of the lead-out end portion 9 into the through hole 13 are formed in a stepped shape. Therefore, the lead-out end portion 9 is completely press-fitted into the through hole 13 until the stopper edges 14 are received in the peripheral edge of the opening at the upper end thereof.
[0042]
When the lead-out end portion 9 is completely press-fitted into the through hole 13, the upper end of the engaging piece 12 projects below the through hole 13 to elastically restore to the original protruding state, and the upper end of the engaging piece 12 becomes the lower end of the through hole 13. Of the opening.
[0043]
Since the projecting portion 6c of the conductive portion 6 is formed on the periphery of the opening at the lower end of the through hole 13, the upper end of the engaging piece 12 is received by the projecting portion 6c of the conductive portion 6. This restricts the leading end portion 9 from coming out above the through hole 13.
[0044]
In a state in which the lead-out end portion 9 is press-fitted into the through hole 13, the left and right contact pieces 11 are elastically deformed, so that the elastic restoring force causes an intermediate flat between the upper and lower end portions 11a and 11b of the contact piece 11. The portion 11c is entirely pressed against the conductive portion 6 facing the through hole 13.
[0045]
In particular, since the upper and lower ends of the contact piece 11 are formed in a doubly-supported shape that connects to the lead-out end portion 9, the above-described pressing force of the contact piece 11 against the conductive portion 6 in the through hole 13 becomes strong. Therefore, the lead-out end portion 9 can be securely held and fixed to the through hole 13 without backlash and without carelessly displacing in the vertical direction only by this pressing force. Then, the lead-out end portion 9 of each terminal plate 7 is electrically connected to the conductive portion 6 of the circuit board 5 by the contact pieces 11. The stopper edges 14 and the upper end of the engagement piece 12 also assist the conduction state.
[0046]
When it is necessary to detach the battery 1 with terminal plate from the circuit board 5, the upper end of the engaging piece 12 is grasped with a fingertip or the like, and is bent toward the lead-out end portion 9 of the terminal plate 7. What is necessary is just to guide the upper end of 12 into the through-hole 13, and pull up the leading-out end part 9 as it is.
[0047]
Second Embodiment FIGS. 5 and 6 show a second embodiment according to the present invention. In the second embodiment, the left and right contact pieces 11 are cut and raised from the lead-out end 9 of the terminal plate 7. That is, each contact piece 11 has a lower end connected to the leading end portion 9 in a cantilever manner, and an upper end side protruding away from the leading end portion 9. According to this, when the lead-out end portion 9 is pressed into the through-hole 13 from above, the contact piece 11 is elastically deformed toward the lead-out end portion 9, and the upper end portion of the contact piece 11 is elastically restored by the elastic restoring force. 13 is pressed into contact with the conductive part 6 before and after.
[0048]
At the lower end of the lead-out end portion 9 of each terminal plate 7, an engagement piece 12 is formed to be folded upward between the left and right contact pieces 11 and 11. According to this, in a state where the lead-out end portion 9 is completely pressed into the through hole 13, the upper end of the engaging piece 12 comes out of the through hole 13, and the opening edge of the lower end thereof (the projecting portion 6 c of the conductive portion 6). ). This state is maintained by the resilient action of the contact piece 11 projecting to the opposite side of the engagement piece 12.
[0049]
The other points of the second embodiment are substantially the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted. The engaging piece 12 in the second embodiment does not need to be elastically deformed, but is formed by bending the engaging piece 12 into a V-shaped cross section, and the engaging piece 12 is elastically movable in the front-rear direction similarly to the first embodiment. It may be deformed.
[0050]
If a pair of left and right contact pieces 11 are provided on the lead-out end portion 9 of the terminal plate 7, the lead-out end portion 9 and the battery main body 2 are supported and fixed to the circuit board 5 without rattling. It is advantageous to However, the present invention is not limited to this embodiment, and the number of the contact pieces 11 that contact the conductive portion 6 in the through hole 13 may be one or three or more.
[0051]
A contact piece 11 is bent to a cantilever shape in a substantially horizontal posture and is connected to the lead-out end portion 9, and the contact piece 11 elastically contacts the conductive portion 6 provided on the peripheral edge of the upper end opening of the through hole 13. However, it is also possible to adopt a mode in which conduction between the lead-out end portion 9 and the conductive portion 6 is achieved only by this.
[0052]
The engagement pieces 12 of the present invention may be provided at both ends of the lead-out end portion 9 in the left-right width direction. In that case, a form in which the contact piece 11 exists between the left and right engagement pieces 12 can be adopted.
[0053]
Third Embodiment FIGS. 7 and 8 show a third embodiment of the present invention. 7A is a side view of the coin-shaped lithium battery 1, FIG. 7B is a vertical cross-sectional view taken along the line CC of FIG. 7A, and FIG. 8 is a cross-sectional view taken along the line DD of FIG. FIG. The coin-shaped lithium battery 1 includes a battery main body 2 and terminal plates 7 fixed to the positive and negative electrodes of the battery main body 2 by welding. The battery main body 2 includes a bottomed cylindrical battery case 3 having an opening on the upper surface, and a lid 4 for sealing the opening in a sealed manner. The battery case 3 serves as a positive electrode, and the lid 4 serves as a negative electrode. I do.
[0054]
The terminal plates 7 electrically connect the conductive part 6 provided on the circuit board 5 to the positive and negative electrodes of the battery body 2, and fix and hold the battery body 2 non-movably with respect to the circuit board 5. Each terminal plate 7 is integrally formed with a horizontal arm 8 welded and fixed to the upper and lower surfaces of the battery main body 2 and extending in the front-rear horizontal direction, and a leading end portion 9 bent downward from the free end of the horizontal arm 8. It is a substantially L-shaped press-formed product in side view.
[0055]
As shown in FIGS. 7 and 8, the lead-out end portion 9 is formed so as to sandwich the contact piece 11 with a central contact piece 11 that is cantilevered downwardly from the folded portion of the horizontal arm 8. It comprises a pair of engaging pieces 12 which are extended downward in a cantilever manner and are elastically deformable in the left-right direction. When the contact piece 11 and the engagement piece 12 are inserted and mounted in the through hole 13 provided in the circuit board 5, the lead-out end portion 9 is connected to the conductive portion 6 formed on the inner wall surface of the through hole 13. The conductive part 6 is electrically connected to the positive and negative electrodes of the battery body 2 while being in contact with each other, and is held by the circuit board 5 so as not to come off, so that the battery body 2 is fixedly held non-movably.
[0056]
As shown in FIG. 8, the through hole 13 has a substantially rectangular shape that is long in the left-right direction and short in the front-rear direction in plan view, and has an inner peripheral surface formed in a straight shape with the same upper and lower opening dimensions. ing. The conductive portion 6 is formed on the entire inner peripheral surface of the through hole 13.
[0057]
As shown in FIGS. 7 and 8, the contact piece 11 is formed in a bulging shape toward the battery body 2, that is, in the rearward direction, and has a central spring plate portion 15 that is elastically deformable in the front-rear direction and a frontward bulging portion. The left and right spring plates 16 are formed in a protruding shape and are elastically deformable in the front-rear direction. These spring plates 15 and 16 are supported in a double-supporting manner between the upper end 17 and the lower end 18. The distance between the opposed spring plates 15 and 16 in the front-rear direction is set to be slightly larger than the size of the opening in the front-rear direction of the through-hole 13. Reference numeral 16 contacts the front and rear walls of the through hole 13 in a pressing manner.
[0058]
The engagement piece 12 has a base end portion 20 extending downward from the upper end portion, a thin portion 21 in which the left and right outer wall surfaces of the base end portion 20 are stolen, and an extension end of the thin portion 21. And an engaging portion 22 provided integrally with and protruding outward in the left-right direction. The left and right outer wall surfaces of the engaging portion 22 are tapered guide surfaces 23 that expand upward. These engaging pieces 12 extend from the left and right outer positions of the proximal end portion 17 of the contact piece 11 and extend from the left and right inner surfaces of the engaging pieces 12 and the contact pieces 11 facing the contact pieces. A deformation gap G that allows the engaging pieces 12 to elastically deform in the direction of the contact piece 11 is secured between the outer surface and the outer surface. That is, the engagement piece 12 and the contact piece 11 are closely opposed to each other with a slight gap therebetween, and the engagement piece 12 can be elastically deformed in the left-right direction independently of the contact piece 11.
[0059]
As shown in FIG. 7B, the distance between the left and right outer wall surfaces of the thin portion 21 is set substantially equal to the distance between the left and right inner wall surfaces forming the through hole 13. Therefore, the engaging portion 22 projects left and right outside the inner wall surface of the through hole 13 by the thickness compared to the thin portion 21 in the left and right direction. The vertical distance between the base end portion 20 and the engaging portion 22, that is, the vertical size of the thin portion 21 is set substantially equal to the thickness of the circuit board 5 at the periphery of the through hole 13.
[0060]
A procedure for mounting the battery 1 with a terminal plate will be described. First, when the engagement piece 12 is inserted into the through hole 13 while the guide surface 23 of the engagement portion 22 is in contact with the upper ends of the left and right inner walls of the through hole 13, the engagement piece 12 is once in the deformation gap G direction. Elastically deformed. Then, in the state of FIG. 7B in which the lead-out end portion 9 is completely inserted and mounted in the through hole 13, the engaging portion 22 protrudes from the through hole 13 in the left-right direction by the elastic restoring force of the engaging piece 12. The engaging portion 22 engages with the circuit board 5 at the lower edge of the through hole 13. The engagement between the engaging portion 22 and the circuit board 5 at the lower peripheral edge of the through-hole 13 can prevent the terminal plate 7 from coming out of the through-hole 13 carelessly. That is, the engagement piece 12 is hooked on the circuit board 5 on the periphery of the through hole 13, so that the terminal plate 7 is prevented from coming off.
[0061]
When the engagement piece 12 is mounted in the through hole 13, the movement of the terminal plate 7 in the vertical direction is restricted within the range of the vertical length of the thin portion 21. Specifically, the stepped portion of the base end portion 20 from the thin portion 21 is received by the circuit board 5 on the upper peripheral edge of the through-hole 13, whereby the terminal plate 7 does not sink downward and remains inside the through-hole 13. Can be installed securely. Further, since the engaging portion 22 is engaged with the circuit board 5 at the lower peripheral edge of the through hole 13, it is prevented from coming off upward. Thus, it is possible to reliably prevent the terminal plate 7 from accidentally coming off the through hole 13 or being displaced due to an external impact. Since the left and right outer surfaces of the thin portion 21 abut against the left and right inner wall surfaces of the through hole 13, the terminal plate 7 does not shift in the left and right direction.
[0062]
In addition, since the engagement piece 12 itself can be elastically deformed, the terminal plate 7 is pushed into the through hole 13 even after the engagement portion 22 is first inserted into the through hole 13, whereby the engagement piece 12 is engaged. The joint 22 can penetrate the through hole 13 while sliding on the left and right side surfaces of the through hole 13. Therefore, the work of mounting the battery 1 with a terminal plate to the through hole 13 can be easily performed, and the battery 1 with a terminal plate can be easily removed by a reverse procedure as necessary. That is, when the battery with terminal plate 1 is detached from the circuit board 5, the engaging portion 22 of the engaging piece 12 is grasped with a fingertip and is bent and deformed in the direction of the contact piece 11, and After releasing the engagement with the circuit board 5, the terminal plate 7 may be lifted upward.
[0063]
Further, when the terminal plate 7 is inserted into the through hole 13, the spring plate portions 15 and 16 constituting the contact piece 11 are elastically deformed so as to reduce the dimension of the facing space in the front-rear direction. In the state shown in FIGS. 7A and 8 in which the lead-out end portion 9 is completely inserted into the through hole 13 and mounted, the contact piece 11 is moved in the front-rear direction of the through hole 13 by the elastic restoring force of the spring plates 15 and 16. Is pressed into engagement with the inner wall surface. Due to the pressing engagement between the spring plates 15 and 16 and the inner wall surface of the through hole 13, electrical conduction between the terminal plate 7 and the conductive portion 6 is ensured, and at the same time, positional deviation in the front-rear direction can be prevented.
[0064]
Fourth Embodiment FIGS. 9 and 10 show a fourth embodiment of the battery with terminal plate according to the present invention. The battery 1 with a terminal plate in this case comprises a battery body 2, a negative electrode terminal plate 7a welded and fixed to the upper surface of the battery body 2, and a positive electrode terminal plate 7b welded to the lower surface of the battery body 2 to form a circuit. It is mounted and fixed on the periphery of the substrate 5.
[0065]
The negative electrode terminal plate 7a is formed integrally with a horizontal arm 30 extending in the rearward direction and a contact portion 31 which is bent at the free end of the horizontal arm 30 in an inverted shape to be in contact with the conductive portion 6a of the circuit board 5. The base end of the horizontal arm 30 is welded and fixed to the upper surface of the battery body 2. The contact portion of the contact portion 31 with the conductive portion 6a is a flat surface.
[0066]
In FIG. 10, the positive electrode terminal plate 7 b includes a base wall 32 that receives the lower surface of the battery body 2, a pair of left and right support arms 33 bent upward from the right and left rear ends of the base wall 32, and a pair of support arms 33. An upper engaging arm 34 bent obliquely downward continuously to the upper end, a lower engaging arm 35 extended rearward from the center of the rear end of the base wall 32, and an oblique angle from the free end of the lower engaging arm 35. It is a press-formed product in which the release piece 36 bent downward is integrally formed, and the battery main body 2 is fixed to the upper surface of the base wall 32 by welding. On the upper surface of the lower engaging arm 35, a fixing projection (engaging portion) 37 is cut and raised. The distance between the left and right sides of the support arm 33 is set to be larger than the width of the left and right sides of the negative electrode terminal plate 7 a, and the distance between the upper and lower engagement arms 34 and 35 is slightly smaller than the thickness of the circuit board 5. Is set to small. The upper and lower engagement arms 34 and 35 are slightly elastically deformable in the up and down direction, and these engagement arms 34 and 35 constitute a leading end portion and a holding portion in the present invention.
[0067]
9A and 9B, reference numeral 13 denotes a substantially square through hole formed near the periphery of the circuit board 5. A conductive portion 6a for a negative electrode is provided on the upper surface of the circuit board 5 between the through hole 13 and the periphery of the circuit board 5, and a conductive portion 6a for the positive electrode is provided on both left and right sides of the conductive portion 6a for the negative electrode. A portion 6b is provided. That is, on the upper surface of the circuit board 5, the conductive portions 6a and 6b for positive and negative electrodes are formed in parallel in the left-right direction. The left and right widths of the through hole 13 are set slightly larger than those of the projection 37.
[0068]
In the battery 1 with a terminal board having the above-described configuration, the battery 1 is mounted on the circuit board 5 by inserting the circuit board 5 between the upper and lower engaging arms 34 and 35 of the positive electrode terminal board 7b. . That is, the battery 1 is mounted on the circuit board 5 by sandwiching the circuit board 5 from above and below in a clip shape with the upper and lower engagement arms 34 and 35. At this time, the battery 1 is fixed to the circuit board by the elastic force of the engagement arms 34 and 35, and the upper engagement arm 34 comes into contact with the conductive portion 6b, so that the positive electrode of the battery body 2 and the circuit board 5 Is made. At the same time, the fixing projection 37 provided on the lower engagement arm 35 enters the through hole 13 provided on the circuit board 5, whereby the battery 1 is engaged and held on the circuit board 5 in a retaining shape. On the other hand, when the contact portion 31 of the negative electrode terminal plate 7a comes into contact with the conductive portion 6a, conductive connection between the negative electrode of the battery main body 2 and the circuit board 5 is made.
[0069]
When the battery with terminal plate 1 is detached from the circuit board 5, the release piece 36 of the lower engagement arm 35 is grasped with a fingertip, and the lower engagement arm 35 is bent and deformed downward, so that the protrusion 37 has a through hole. After the engagement with the battery 13 is released, the battery 1 may be pulled out forward.
[0070]
Fifth Embodiment FIGS. 11 and 12 show a fifth embodiment of the battery with terminal plate according to the present invention. The battery 1 with a terminal plate here comprises a battery body 2, a negative electrode terminal plate 7a welded and fixed to the upper surface of the battery body 2, and a positive electrode terminal plate 7b welded to the lower surface of the battery body 2 and rivets. It is fixed and mounted on the circuit board 5 by using 40.
[0071]
The negative electrode terminal plate 7a is a press-formed product in which a horizontal portion 41 extending outward from the battery main body 2 and a receiving plate (contact portion) 42 that is riveted to the circuit board 5 are bent stepwise. A through hole 43 for a rivet 40 is formed at the center of the plate surface of the rivet 40. The positive electrode terminal plate 7 b is a long flat metal plate, and has a through hole 45 for the rivet 40 formed at the center of the free end (contact portion) 44.
[0072]
The circuit board 5 is provided with a battery chamber 46 for accommodating the battery body 2 in a penetrating manner, and a conductive portion 6a is provided on a wall of the circuit board 5 facing the periphery of the battery chamber 46 and facing the positive and negative electrode terminal plates 7a and 7b. 6b is buried. Through holes 47 for rivets 40 are formed in each of the conductive portions 6a and 6b and the circuit board 5 corresponding thereto.
[0073]
When mounting and fixing the battery 1 with the terminal board to the circuit board, first, the positive electrode terminal board 7 b is inserted into the battery chamber 46, and the battery 1 is temporarily assembled to the circuit board 5. Next, after aligning the through holes 43, 45, 47 of the terminal plates 7a, 7b and the conductive portions 6a, 6b, the rivets 40 are inserted into the through holes 43, 45, 47, and finally, the through holes 43, 45. The tip of the rivet 40 protruding from 44 is deformed flat, and the terminal plates 7 a and 7 b are caulked and fixed to the circuit board 5. At this time, the conductive portions 6a and 6b formed on the circuit board 5 come into contact with the receiving plates 42 and the free ends 44 of the terminal plates 7a and 7b, respectively, so that the conductive connection between the battery body 2 and the circuit board 5 is made. You.
[0074]
In the above embodiment, both the positive electrode terminal plate and the negative electrode terminal plate have the terminal plate configuration of the present invention, but only one terminal plate may have the above configuration, and the arrangement of the battery is also exemplified. It is not limited to one.
[0075]
In the present invention, the material of the terminal plate is not particularly limited, and may be a metal material such as iron, copper, nickel, aluminum, or titanium or an alloy thereof (such as stainless steel or brass), or a clad plate of the member. As described above, a composite of a plurality of materials can be used. Further, the surface of the member may be plated with nickel plating, tin plating, solder plating, copper plating, gold plating, or the like. However, when the terminal plate is attached to the outer can of the battery by welding, it is desirable to select the material of the terminal plate in consideration of the weldability with the outer can, and when the outer can is made of stainless steel, the terminal plate is selected. Is preferably stainless steel or nickel. When the outer can is aluminum or an alloy thereof, it is preferable that the terminal plate is also made of aluminum or an alloy thereof.
[0076]
【The invention's effect】
As described above, according to the battery with the terminal plate of the present invention, when the battery is mounted on the circuit board of the electronic device, the battery main body can be attached to the circuit board without performing a soldering process. In particular, the battery main body can be connected to the circuit board in a conductive state by simply press-fitting the lead-out end portion of the terminal plate into the through hole of the circuit board, and the support can be easily and reliably fixed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional side view showing a first embodiment of a battery with a terminal plate according to the present invention.
FIG. 2 is a perspective view showing a terminal board of the first embodiment.
FIG. 3 is a sectional view taken along line AA in FIG. 1;
FIG. 4 is a sectional view taken along line BB in FIG. 3;
FIG. 5 is a side view showing a second embodiment of the battery with terminal plate according to the present invention.
FIG. 6 is a perspective view showing a terminal plate of a second embodiment.
7A and 7B show a third embodiment of the battery with terminal plate according to the present invention, wherein FIG. 7A is a longitudinal sectional side view, and FIG. 7B is a CC longitudinal sectional view in FIG. 7A.
FIG. 8 is a sectional view taken along line DD in FIG. 7 (b).
9A and 9B show a fourth embodiment of the battery with terminal plate according to the present invention, wherein FIG. 9A is a side view and FIG. 9B is a plan view of a main part.
FIG. 10 is an exploded perspective view of the fourth embodiment.
FIG. 11 is a side view showing a fifth embodiment of the battery with terminal plate according to the present invention.
FIG. 12 is an exploded perspective view of the fifth embodiment.
[Explanation of symbols]
1 Battery with terminal board
2 Battery body
5 Circuit board
6 Conductive part
7 Terminal board
8 horizontal arms
9 Outgoing end
11 Contact piece
12 Engagement piece
13 Through hole

Claims

The battery body,
A terminal portion for electrically connecting the battery body to a conductive portion of the circuit board,
The terminal plate includes a base end portion connected to the battery main body side, and a lead end portion that is led out of the battery main body and pressed into a through hole provided in the conductive portion,
The lead end portion has a contact piece that contacts the conductive portion facing the through hole,
When the lead-out end portion is press-fitted into the through-hole, the contact piece undergoes elastic deformation, and is pressed against the conductive portion by its elastic restoring force.

The battery body,
A terminal portion for electrically connecting the battery body to a conductive portion of the circuit board,
The terminal plate includes a base end portion connected to the battery main body side, and a lead end portion that is led out of the battery main body and pressed into a through hole provided in the conductive portion,
A battery with a terminal plate, wherein the lead-out end portion includes a contact piece that comes into contact with the conductive portion and an engaging piece that engages with the through hole in a retaining shape.

One battery body includes two terminal plates,
In a state where the battery main body is arranged on the circuit board, the terminal plate is horizontally fixed by welding to the negative electrode and the positive electrode on the upper and lower surfaces of the battery main body, and extends horizontally. The battery with a terminal plate according to claim 1, comprising the lead-out end portion bent downward from an end.

The contact piece is formed on the lead-out end portion so as to be elastically deformable so as to protrude in the front-rear thickness direction of the lead-out end portion,
4. The terminal board according to claim 3, wherein the contact piece is press-fitted into the through hole while being elastically deformed, and the contact piece is pressed against the conductive portion facing the through hole by its own elastic restoring force. With battery.

The battery with a terminal plate according to claim 4, wherein the contact piece is formed vertically vertically.

The battery with a terminal plate according to claim 5, wherein upper and lower ends of the contact piece are connected to the leading end portion in a doubly supported manner.

In the lead-out end portion, the engagement piece is cut and raised to be elastically deformable so as to protrude in the front-rear thickness direction of the lead-out end portion,
The engagement piece has a lower end connected to a lower end of the lead-out end portion, and an upper surface side projects in a free state in a direction away from the lead-out end portion,
The engagement piece can be press-fitted into the through hole from above by elastically deforming itself.
The battery with a terminal plate according to claim 2, wherein the upper end of the engagement piece is received by a peripheral edge of an opening at a lower end of the through-hole in a state where the lead-out end portion is completely pressed into the through-hole.

On the left and right in the width direction of the leading end portion, the vertically long contact piece is formed,
The battery with a terminal plate according to claim 7, wherein the vertically extending engagement piece is formed below the left and right contact pieces at the leading end portion.

At the lower end of the lead-out end portion, the engaging piece is formed by folding back upward,
The battery with a terminal plate according to claim 3 or 4, wherein an upper end of the engagement piece is received by an opening periphery of a lower end of the through hole in a state where the lead-out end portion is completely pressed into the through hole.

On the periphery of the opening at the lower end of the through hole, the conductive portion is formed so as to protrude,
The battery with a terminal plate according to claim 7 or 9, wherein an upper end of the engagement piece is received by a protruding portion of the conductive portion.

The battery with a terminal plate according to claim 7, wherein the contact piece protrudes on one side in the front-rear thickness direction of the lead-out end and the engagement piece 12 protrudes on the other side.

The battery with a terminal plate according to claim 1, wherein stopper edges are formed at both ends in the left-right width direction of the lead-out end portion, the stopper edges being received by an opening peripheral edge at an upper end of the through hole.

The contact piece is formed on one of the leading end portions in the front-back thickness direction and is elastically deformable in the front-back thickness direction. 5. The battery with terminal plate according to claim 4, further comprising left and right spring plate portions which are formed on the other end of the leading end portion in the front-back thickness direction and are elastically deformable in the front-back thickness direction.

The lead-out end portion includes the contact piece disposed in the center in the left-right width direction, and the engagement piece disposed on both outer sides in the left-right width direction of the contact piece,
The engagement piece is elastically deformable in the left-right width direction,
The engagement piece is inserted into the through hole in a state where it has undergone elastic deformation,
4. The battery with a terminal plate according to claim 3, wherein each of the engaging pieces is engaged with the through hole in a vertical direction with its own elastic restoring force.

The battery with a terminal plate according to claim 14, wherein the engagement piece is in contact with the conductive portion facing the through hole.

The engagement piece is extended in a cantilever shape downward,
The battery with a terminal plate according to claim 14 or 15, wherein a locking portion is formed at a lower end of the engagement piece so as to be hooked on an opening periphery of a lower end of the through hole.

A battery main body, and two terminal plates for electrically connecting the battery main body to a conductive portion of a circuit board, and the lead-out end portion of one of the terminal plates is connected to the circuit board by the battery main body. Battery with a terminal plate for fixing
The lead-out end portion of one of the terminal boards has a holding portion for holding the circuit board from both front and back sides thereof,
A battery with a terminal plate, wherein one of the holding portions is provided with a contact portion that contacts the conductive portion of the circuit board.

The battery with a terminal plate according to claim 17, wherein the other holding portion of the lead-out end portion is provided with an engaging portion that engages with the circuit board to position the battery body with respect to the circuit board. .

A battery with a terminal plate comprising a battery body and a terminal plate for electrically connecting the battery body to a conductive portion of a circuit board,
The terminal plate has a contact portion that is in conductive contact with the conductive portion of the circuit board,
The contact portion is provided with a through hole or a notch,
A battery with a terminal plate, wherein the terminal plate is fixed to the circuit board by a rivet inserted through the through hole or the notch.