JP3711035B2

JP3711035B2 - Battery holder

Info

Publication number: JP3711035B2
Application number: JP2001129248A
Authority: JP
Inventors: 諭高大越; 正広中野
Original assignee: Iriso Electronics Co Ltd
Current assignee: Iriso Electronics Co Ltd
Priority date: 2001-04-26
Filing date: 2001-04-26
Publication date: 2005-10-26
Anticipated expiration: 2021-04-26
Also published as: JP2002324532A

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば電子機器のプリント回路基板に備えるメモリのバックアップ用電源として使用されるボタン形電池を収容するための電池ホルダに関する。
【０００２】
【従来の技術】
例えば携帯電話のような電子機器のプリント回路基板にはメモリが備わっているが、そのバックアップ用電源としてボタン形電池が利用されている。そして、基板回路とボタン形電池との間で電力供給の橋渡し役を担うのが電池ホルダである。この電池ホルダについては、衝撃や振動を受けても収容したボタン形電池が容易に離脱しないことが重要で、特に携帯電話のように比較的大きな衝撃や振動を受け易い電子機器に用いる場合には基本性能として要求される。従来の電池ホルダでは、ボタン形電池の離脱防止性能を満足すべく、ボタン形電池を収容するホルダ本体に、ボタン形電池と導電接触するコンタクトを取付けるためのブロック形の保持部を形成したり（第１の従来技術）、ボタン形電池の周側面を周方向に渡って囲う円弧形の周壁を垂設し（第２の従来技術）、ブロック形の保持部や円弧形の周壁にボタン形電池の上面に係止する係止爪を形成したようなものがある（類似技術として特開平１０−１５４４９３号公報参照）。
【０００３】
【発明が解決しようとする課題】
しかしながら、第１の従来技術にあっては、剛性の高いブロック形の保持部に係止爪が形成されているので、予め正規の収容位置（収容位置から外れていない状態をいう。以下、同じ。）の上方に位置決めした状態からボタン形電池を押込まないと、硬くてホルダ本体に収容しにくい、という問題がある。特に、ボタン形電池が直径５ｍｍ以下の扱い難い小型サイズであると、人手で収容するにしても多大な労力を強いられる。
【０００４】
また、第２の従来技術にあっては、ボタン形電池が正規の収容位置から若干外れる程度にずれていても、ボタン形電池の押込み時に円弧形の周壁が若干外方に撓むため、第１の従来技術よりも押込み時の硬さは緩和される。しかしながら、この従来技術では、ボタン形電池や樹脂成形したホルダ本体の寸法誤差によってホルダ本体の収容空間よりもボタン形電池の方が相対的に大きいと、ホルダ本体に垂設した円弧形の周壁がボタン形電池による外向きの押圧を継続的に受けて無理に撓んでしまう。すると、周壁の付け根付近にクラックが発生し易いという問題や、周壁の係止爪が上向きに反り返った状態でボタン電池の上面に点接触で係止するために僅かな衝撃でボタン形電池が離脱し易いという問題がある。また、円弧形の周壁はボタン形電池の周側面を囲うものであるため、ホルダ本体をボタン形電池よりも大きなサイズで形成しなければならず、その分実装面積が大きくなってしまうという問題もある。
【０００５】
この発明は、以上のような従来技術を背景に成されたもので、その目的は、ボタン形電池の取付硬さ（硬くてホルダ本体に収容しにくい状態をいう。以下、同じ。）を低減でき、ホルダ本体のクラックの発生とボタン形電池の離脱を防ぐことのできる電池ホルダを提供することにある。
【０００６】
【課題を解決するための手段】
この目的を達成すべく、本発明の電池ホルダは、ボタン形電池を収容するホルダ本体にボタン形電池の上面に係止するロック部を形成した電池ホルダについて、ロック部をボタン形電池の収容位置の外側で柱形に突設すると共にボタン形電池の周側面と向き合う該ロック部の対峙面を該ボタン形電池の中心方向に内倒させて形成したことを特徴としている。
【０００７】
この電池ホルダでは、ロック部をボタン形電池の収容位置の外側に柱形に突設したため、正規の収容位置から若干外れた状態でボタン形電池を上方から押込んでも、ロック部の柔軟性が高く柔らかく撓ませることができる。そのため、ブロック形の保持部（第１の従来技術）や周壁（第２の従来技術）と比較して、高い柔軟性によって取付硬さを低減できる。また、ボタン形電池の周側面と向き合うロック部の対峙面をボタン形電池の中心方向に内倒させたので、その分ロック部の撓み量が大きい。そのため、ボタン形電池やホルダ本体の寸法誤差によってホルダ本体の収容空間よりもボタン形電池の方が相対的に大きく、ロック部が収容したボタン形電池から継続的な押圧を受けても、大きな撓み量によって寸法誤差を吸収することができ、ロック部の付け根付近におけるクラックの発生も防止できる。なお、柱形のロック部の断面形状は、正多角形状、異形多角形状、正円形状、楕円形状、あるいはこれらの複合形状の何れでもよい。
【０００８】
また、上記電池ホルダは、ロック部の対峙面にボタン形電池の上面を抑える爪部を突設し、該上面に係止する該爪部の係止面を下向きに傾斜させて形成したものとして構成できる。
【０００９】
ボタン形電池や樹脂成形したホルダ本体の寸法誤差によって、例えば、正規の収容位置よりもボタン形電池の上面位置の方が高さ方向で高くなってしまったり、ホルダ本体の収容空間よりもボタン形電池の方が相対的に大きくなってしまって、ロック部が収容したボタン形電池から継続的な押圧を受けて反り返る場合がある。本発明では、ロック部の対峙面にボタン形電池の上面を抑える爪部を突設し、該上面に係止する該爪部の係止面を下向きに傾斜させて形成したので、そのような場合でも、係止面がボタン形電池の上面に対して下向き傾斜する点接触の状態で若しくは面接触の状態で係止する。従って、十分な係止力を発揮することができ、落下等による衝撃を受けてもボタン形電池が離脱しない。
【００１０】
さらに、上記電池ホルダは、ボタン形電池の周側面を周方向で部分的に囲うと共にロック部よりも低背な保持壁を、ロック部に一体形成したものとして構成できる。
【００１１】
保持壁は、ボタン形電池の周側面を周方向で部分的に囲うので、落下等による衝撃が加わった場合でも、正規の収容位置からボタン形電池が離脱するのを防止できる。また、保持壁はロック部の高さよりも低背に一体形成してあるので、ロック部の柔軟性をほとんど阻害せず、且つ過度の撓みや外力に対してロック部を補強することができる。
【００１２】
また、上記電池ホルダは、保持壁におけるロック部との連続部分に下向き切欠形状の凹部を形成したものとして構成できる。
【００１３】
保持壁におけるロック部との連続部分に下向き切欠形状の凹部を形成することで、保持壁が持つボタン形電池の離脱防止機能はそのままで、ロック部の柔軟性を更に向上させることができる。
【００１４】
そして、上記電池ホルダは、ホルダ本体にボタン形電池と導電接触するコンタクトの取付部を形成すると共に、該取付部に該コンタクトを上方から圧入する上向き開口形状の係合溝を形成したものとして構成できる。
【００１５】
この電池ホルダは、コンタクトの取付部にコンタクトを上方から圧入する上向き開口形状の係合溝を形成したので、プリント回路基板とこれにはんだ付けするコンタクトとでホルダ本体を挟み込むようにプリント回路基板に固着できる。そのため、落下等の衝撃を受けても、はんだ付けしたプリント回路基板に対するコンタクトの接合力によって、プリント回路基板からのホルダ本体の離脱を防止できる。
【００１６】
【発明の実施の形態】
以下、本発明の実施形態について図面を参照しつつ説明する。
【００１７】
この実施形態に係る電池ホルダ１は、ホルダ本体２に二つのコンタクト３，４を備えて構成されている。
【００１８】
ホルダ本体２は、弾性を有する熱可塑性樹脂で一体形成したもので、ボタン形電池Ｂの正規の収容位置の外側に、計４本の柱形のロック部５が備わっている。各ロック部５は、図４で示すように、ボタン形電池Ｂの周側面Ｂｓと向き合う対峙面５ａが垂直線Ｌｖに対して角θ_１ほどボタン形電池Ｂの中心点Ｐ１の方向に内倒している。この対峙面５ａの上部には、ホルダ本体２に収容したボタン形電池Ｂの上面Ｂｕを抑える爪部５ｂが突設してあり、この爪部５ｂには該上面Ｂｕに係止する係止面５ｃが水平線Ｌｈに対して角θ_２ほど下向きに傾斜させて形成してある。なお、角θ_１と角θ_２とでは後者の方が角度が大きく、従って対峙面５ａが垂直線Ｌｖに沿うまで撓んでも係止面５ｃは下向きに傾斜したままの状態でボタン形電池Ｂの上面Ｂｕに係止する。また、ロック部５の下端には、外方へ広がる裾部５ｄが形成されている（図４参照）。
【００１９】
各ロック部５の一方側面側には、ロック部５よりも長さｄ１ほど背の低い保持壁６が一体形成されている（図５参照）。この保持壁６は、ボタン形電池Ｂの周側面Ｂｓを周方向で部分的に囲うと共に、該周側面Ｂｓに対して押圧しない程度に僅かに接触した状態でボタン形電池Ｂを保持している。
【００２０】
各ロック部５の他方側面側には、溝形スリット７を介してコンタクト取付部８，９が設けてある。このようにロック部５とコンタクト取付部８，９との間に溝形スリット７を介在させたため、ロック部５の柔軟性は阻害されていない。コンタクト取付部８には取付溝８ａが形成されていて、そこに一方電極を成すボタン形電池Ｂの下面Ｂｄと導電接触するコンタクト２を圧入し固定する。また、コンタクト取付部９にも同様の取付溝９ａが形成されていて、そこに他方電極を成すボタン形電池Ｂの周側面Ｂｓと導電接触するコンタクト４を圧入し固定する。
【００２１】
コンタクト３には、テール部３ａ、曲折部３ｂ、ばね接触部３ｃが形成されている。テール部３ａは、プリント回路基板１０にはんだ付けする部分で、基板回路のパターン形状に対応する形状となっている。曲折部３ｂには、折り曲げて２重にした中央部３ｄから左右に延びる固定部３ｅが形成されており、この固定部３ｅには係止爪３ｆが横向きに突設してある。そして、コンタクト３をコンタクト取付部８の取付溝８ａに挿入すると、係止爪３ｆがその内壁に食い込んで係止し、この係止力によってコンタクト３がホルダ本体２に固定される。ばね接触部３ｃは、曲折部３ｂとの連結部分である基端部３ｇから伸長し、二股形状の先端側にはボタン形電池Ｂの下面Ｂｄに対して弾発的に導電接触する二つの接点部３ｈが形成されている。なお、ばね接触部３ｃの基端部３ｇはホルダ本体２の底部モールドの肉厚内に位置しており、その長さ方向と上下方向の両方向について、ばね長さを十分に確保できるようになっている。このように、ばね長さを十分に確保できるのは、ホルダ本体２にコンタクト３の外形に略相応する大きな切欠形状のＵ形肉抜き部２ａを形成したためである。そして、このＵ形肉抜き部２ａを形成したため、コンタクト取付部８は左右に分割された形状で、樹脂の使用量が少なくなっている。
【００２２】
コンタクト４にもコンタクト３と同様に、プリント回路基板１０にはんだ付けされるテール部４ａ、断面Ｕ形に折り曲げた曲折部４ｂ、他方電極を成すボタン形電池Ｂの周側面Ｂｓと導電接触するばね接触部４ｃが形成されている。また、このコンタクト４の曲折部４ｂにも、左右方向へ延びる固定部４ｄを備えており、この固定部４ｄの係止爪４ｅがホルダ本体２のコンタクト取付部９に形成した取付溝９ａの内壁に食い込み係止し、この係止力によってコンタクト４がホルダ本体２に固定される。
【００２３】
次に、以上のような構成の電池ホルダ１の作用・効果を説明する。
【００２４】
（１）．この実施形態の電池ホルダ１は、ロック部５をボタン形電池Ｂの収容位置（図２におけるＢの位置）の外側に柱形として突設したため、収容位置(Ｂ)から若干外れた状態でボタン形電池Ｂを上方から押込んでも、ロック部５の柔軟性が高く柔らかく撓ませることができる。この高い柔軟性があるため、ボタン形電池５の取付硬さを低減できる。
【００２５】
（２）．例えば、図６（ａ）で二点鎖線で示すように対峙面５ａ′を内倒せずに垂直に形成したロック部５′の場合は、ボタン形電池Ｂやホルダ本体２′の寸法誤差によって正規の収容空間よりもボタン形電池Ｂが相対的に大きく、収容したボタン形電池Ｂから継続的な押圧を受けると、実線で示すようにロック部５′が外向きに大きく反り返ってしまい、その付け根付近に応力集中によりクラックを生じる恐れがある。しかしながら、この実施形態のロック部５は、図６（ｂ）で二点鎖線で示すようにボタン形電池Ｂの周側面Ｂｓと向き合う対峙面５ａがボタン形電池Ｂの中心点Ｐ１の方向へ内倒しているため、その分、ロック部５の撓み量が大きい。従って、ボタン形電池Ｂやホルダ本体２の寸法誤差によってホルダ本体２の収容空間に対してボタン形電池Ｂが若干大きく、収容したボタン形電池Ｂから継続的な押圧を受けても、大きな撓み量によってその寸法誤差を吸収でき、ロック部４の付け根付近におけるクラックの発生も防止できる。
【００２６】
（３）．ボタン形電池Ｂや樹脂成形したホルダ本体２の寸法誤差によって、例えば正規の収容位置(Ｂ)よりもボタン形電池Ｂの上面位置の方が高さ方向で高くなってしまったり、ホルダ本体２の収容空間よりもボタン形電池Ｂの方が相対的に大きくなってしまって、ロック部５が収容したボタン形電池Ｂから継続的な押圧を受けて反り返る場合がある。こうした場合、図６（ａ）で二点鎖線で示すように、ボタン形電池Ｂの上面Ｂｕに係止する係止面５ｃ′が水平であると、図６（ａ）で実線で示すように、その水平な係止面５ｃ′が上向きに反り返った状態でボタン形電池Ｂの上面Ｂｕに対して点接触で係止するため、十分な係止力が得られず落下等の衝撃を受けると比較的容易にボタン形電池Ｂが離脱してしまう。しかしながら、この実施形態のロック部５は、図６（ｂ）で二点鎖線で示すように爪部５ｂの係止面５ｃを下向きに傾斜しているので、そのような場合でも図６（ｂ）で実線で示すように係止面５ｃがボタン形電池Ｂの上面Ｂｕに対して面接触で係止する。従って、十分な係止力を発揮することができ、落下等による衝撃を受けてもボタン形電池が離脱しない。
【００２７】
（４）．ロック部５と一体形成した保持壁６は、ボタン形電池Ｂの周側面Ｂｓを周方向で部分的に囲うため、落下等による衝撃が加わった場合でも、正規の収容位置(Ｂ)からボタン形電池Ｂが離脱するのを防止できる。しかも、この保持壁６は、ロック部５の高さよりも低背に一体形成されているので、ロック部５の柔軟性をほとんど阻害せず、且つ過度の撓みや外力に対してロック部５を補強することができる。
【００２８】
（５）．また、ホルダ本体２が、正規の収容位置に収容したボタン形電池Ｂの直径サイズに対して、長手方向で大きく該長手方向に対する直交方向で小さい略長方形状に形成すると共に、ボタン形電池Ｂと干渉しない空きスペースとなる略長方形状の対角位置にロック部５と保持壁６を形成したので、プリント回路基板１０に対する実装面積を小さくできる。
【００２９】
（６）．ホルダ本体２に形成したコンタクト取付部８，９に、コンタクト３，４を上方から圧入する上向き開口形状の取付溝８ａ，９ａを形成したので、プリント回路基板１０とこれにはんだ付けするコンタクト３，４とでホルダ本体２を挟み込むようにプリント回路基板１０に固着できる。そのため、落下等の衝撃を受けても、はんだ付けしたプリント回路基板１０に対するコンタクト３，４の接合力によって、プリント回路基板１０からのホルダ本体２の離脱を防止できる。
【００３０】
以上のような本発明の一実施形態による電池ホルダ１は、以下のように変形実施することも可能である。
【００３１】
また、上記実施形態では、図４で示すようにロック部５の下端に裾部５ｄを形成してロック部５に撓み支点Ｐ２を設定した例を示したが、例えば図４で破線で示すように裾部５ｄを無くして、ロック部５の下端部に撓み支点Ｐ３を設定するようにしてもよい。前者では撓み支点Ｐ２を中心にロック部５が撓むが、後者によれば撓み支点Ｐ３がロック部５の下端になるので、ロック部５の全体の柔軟性をさらに向上させることができる。
【００３２】
上記実施形態では、保持壁６の高さを一定としてあるが、例えば図５で破線で示すように、ロック部５との連続部分に下向き切欠形状の凹部６ａを形成してもよい。これによれば、保持壁６が持つボタン形電池Ｂの離脱防止機能はそのままで、ロック部５の柔軟性を更に向上させることができる。
【００３３】
【発明の効果】
本発明の電池ホルダは、ロック部をボタン形電池の正規の収容位置の外側で柱形に突設したため、正規の収容位置から若干外れた状態でボタン形電池を上方から押込んでも、ロック部の柔軟性が高く柔らかく撓ませてボタン形電池を収容することができる。また、ボタン形電池の周側面と向き合うロック部の対峙面をボタン形電池の中心方向に内倒させたので、その分ロック部の撓み量が大きい。そのため、ボタン形電池やホルダ本体の寸法誤差によってホルダ本体の収容空間に対してボタン形電池が若干大きく、収容したボタン形電池から継続的な押圧を受けても、大きな撓み量によって寸法誤差を吸収でき、ロック部の付け根付近におけるクラックの発生も防止できる。
【００３４】
本発明の電池ホルダでは、ロック部の対峙面にボタン形電池の上面を抑える爪部を突設し、該上面に係止する該爪部の係止面を下向きに傾斜させて形成したので、ボタン形電池や樹脂成形したホルダ本体の寸法誤差によって、例えば正規の収容位置よりもボタン形電池の上面位置の方が高さ方向で高くなってしまってロック部が反り返った場合でも、係止面がボタン形電池の上面に対して下向き傾斜する点接触の状態で若しくは面接触の状態で係止する。従って、十分な係止力を発揮することができ、落下等による衝撃を受けてもボタン形電池が離脱しない。
【００３５】
本発明の電池ホルダは、ボタン形電池の周側面を周方向で部分的に囲う保持壁を形成したので、落下等による衝撃が加わった場合でも、正規の収容位置からボタン形電池が離脱するのを防止できる。また、保持壁はロック部の高さよりも低背に一体形成してあるので、ロック部の柔軟性をほとんど阻害せず、且つ過度の撓みや外力に対してロック部を補強することができる。
【００３６】
本発明の電池ホルダでは、保持壁におけるロック部との連続部分に下向き切欠形状の凹部を形成したので、保持壁が持つボタン形電池の離脱防止機能はそのままで、ロック部の柔軟性を更に向上させることができる。
【００３７】
本発明の電池ホルダでは、ホルダ本体にボタン形電池と導電接触するコンタクトの取付部を形成すると共に、該取付部に該コンタクトを上方から圧入する上向き開口形状の係合溝を形成したので、プリント回路基板とこれにはんだ付けされるコンタクトとでホルダ本体を挟み込むようにプリント回路基板に固着できる。そのため、落下等の衝撃を受けても、はんだ付けしたプリント回路基板に対するコンタクトの接合力によって、プリント回路基板からのホルダ本体の離脱を防止できる。
【図面の簡単な説明】
【図１】一実施形態による電池ホルダの分解組立斜視図。
【図２】一実施形態による電池ホルダの平面図。
【図３】図２の矢示ＳＡ−ＳＡ線断面図。
【図４】図２の矢示ＳＢ−ＳＢ線拡大断面図。
【図５】図２の矢示ＳＣ−ＳＣ線拡大断面図。
【図６】電池ホルダのロック部の動作説明図で、分図（ａ）は比較例によるロック部の動作説明図、分図（ｂ）は図１のロック部の動作説明図。
【符号の説明】
１電池ホルダ
２ホルダ本体
３，４コンタクト
５ロック部
５ａ対峙面
５ｂ爪部
５ｃ係止面
６保持壁
６ａ凹部
８，９コンタクト取付部（取付部）
８ａ，９ａ取付溝（係合溝）
１０プリント回路基板
Ｂボタン形電池（正規の収容位置）
Ｂｓ周側面
Ｂｕ上面
Ｐ１ボタン形電池の中心点[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery holder for housing a button-type battery used as a backup power source for a memory provided in a printed circuit board of an electronic device, for example.
[0002]
[Prior art]
For example, a printed circuit board of an electronic device such as a cellular phone has a memory, but a button-type battery is used as a backup power source. The battery holder plays a role of bridging the power supply between the substrate circuit and the button-type battery. For this battery holder, it is important that the stored button-type battery is not easily detached even when subjected to shock or vibration, especially when used for electronic devices that are subject to relatively large shock or vibration, such as mobile phones. Required as basic performance. In the conventional battery holder, in order to satisfy the button-type battery detachment preventing performance, a block-type holding portion for attaching a contact that makes conductive contact with the button-type battery is formed on the holder body that accommodates the button-type battery ( First prior art), an arc-shaped peripheral wall surrounding the peripheral side surface of the button-type battery in the circumferential direction is suspended (second prior art), and a button is provided on the block-shaped holding portion or the arc-shaped peripheral wall. There is a battery that has locking claws formed on the upper surface of the battery (see Japanese Patent Application Laid-Open No. 10-154493 as a similar technique).
[0003]
[Problems to be solved by the invention]
However, in the first prior art, since the locking claw to the holding portion of the high block-shaped rigid is formed, and a state of not deviate from previously normal accommodation position (yield capacity position. Hereinafter, The same is true.) If the button-type battery is not pushed in from the position positioned above, there is a problem that it is hard to be accommodated in the holder body. In particular, if the button-type battery is a small size that is difficult to handle with a diameter of 5 mm or less, a great deal of labor is required even if it is housed manually.
[0004]
In addition, in the second prior art, even if the button-shaped battery is slightly deviated from the normal housing position, the arc-shaped peripheral wall slightly bends outward when the button-shaped battery is pushed, The hardness at the time of pressing is relaxed compared to the first prior art. However, in this prior art, when the button-type battery is relatively larger than the accommodation space of the holder body due to the dimensional error of the button-type battery or the resin-molded holder body, the arc-shaped peripheral wall suspended from the holder body However, it will bend | forced forcibly by receiving the outward press by a button-type battery continuously. Then, the problem that cracks are likely to occur near the base of the peripheral wall, and the button-type battery comes off with a slight impact because it is locked to the upper surface of the button battery by point contact with the locking claw of the peripheral wall curving upward. There is a problem that it is easy to do. Moreover, since the arc-shaped peripheral wall surrounds the peripheral side surface of the button-type battery, the holder body must be formed in a size larger than that of the button-type battery, and the mounting area increases accordingly. There is also.
[0005]
The present invention has been made against the background of the prior art as described above, and its object is to reduce the mounting hardness of the button-type battery (which is hard and difficult to be accommodated in the holder body; the same applies hereinafter). Another object of the present invention is to provide a battery holder that can prevent cracks in the holder body and detachment of the button-type battery.
[0006]
[Means for Solving the Problems]
In order to achieve this object, a battery holder of the present invention, the battery holder forming a locking unit for locking the upper surface of the button-type battery holder body for accommodating the button-type battery, the locking portion of the button-type battery Osamu Description It is characterized in that it is formed in a columnar shape on the outside of the position, and the opposite surface of the lock portion facing the peripheral side surface of the button-type battery is formed inwardly in the center direction of the button-type battery.
[0007]
In this battery holder, because of the projecting lock portion columnar outside the yield capacity position of the button-type battery, also pushed do a button-type battery from above in a state deviated slightly from the accommodation position of the normal flexibility of the locking portion High and can be bent softly. Therefore, compared with a block-shaped holding part (first prior art) and a peripheral wall (second prior art), the mounting hardness can be reduced by high flexibility. Further, since the facing surface of the lock portion facing the peripheral side surface of the button-type battery is turned inward in the center direction of the button-type battery, the amount of bending of the lock portion is large accordingly. For this reason, the button-type battery is relatively larger than the holder body storage space due to the dimensional error of the button-type battery and the holder body, and even if the button-type battery accommodated in the lock part receives continuous pressing, it is greatly deflected. The dimensional error can be absorbed by the amount, and the occurrence of cracks near the base of the lock portion can also be prevented. In addition, the cross-sectional shape of the columnar lock portion may be any of a regular polygon shape, an irregular polygon shape, a perfect circle shape, an elliptical shape, or a composite shape thereof.
[0008]
Further, the battery holder is formed by projecting a claw portion for holding the upper surface of the button-type battery on the opposite surface of the lock portion, and tilting the locking surface of the claw portion to be locked to the upper surface downward. Can be configured.
[0009]
Due to dimensional errors of the button-type battery or the resin-molded holder main body, for example, the upper surface position of the button-type battery is higher in the height direction than the normal housing position, or the button shape is larger than the housing space of the holder main body. The battery may become relatively large, and may be warped by receiving continuous pressing from the button-type battery accommodated in the lock portion. In the present invention, a claw portion that holds the upper surface of the button-type battery is provided on the opposite surface of the lock portion, and the locking surface of the claw portion that is locked to the upper surface is formed to be inclined downward. Even in this case, the locking surface is locked in a point contact state or a surface contact state in which the locking surface is inclined downward with respect to the upper surface of the button-type battery. Accordingly, a sufficient locking force can be exerted, and the button-type battery does not come off even when subjected to an impact due to dropping or the like.
[0010]
Furthermore, the battery holder can be configured such that a holding wall that partially surrounds the peripheral side surface of the button-type battery in the circumferential direction and that is lower than the lock portion is integrally formed with the lock portion.
[0011]
Since the holding wall partially surrounds the circumferential side surface of the button-type battery in the circumferential direction, it is possible to prevent the button-type battery from being detached from the normal housing position even when an impact due to dropping or the like is applied. In addition, since the holding wall is integrally formed with a height lower than the height of the lock portion, the lock portion is hardly hindered and the lock portion can be reinforced against excessive bending or external force.
[0012]
In addition, the battery holder can be configured such that a recessed portion having a downward notch shape is formed in a continuous portion of the holding wall with the lock portion.
[0013]
By forming a downward notch-shaped concave portion in a continuous portion of the holding wall with the lock portion, it is possible to further improve the flexibility of the lock portion without changing the button-type battery detachment preventing function of the holding wall.
[0014]
The battery holder is configured such that an attachment portion for a contact that makes conductive contact with the button-type battery is formed in the holder body, and an engagement groove having an upward opening shape that press-fits the contact from above is formed in the attachment portion. it can.
[0015]
This battery holder has an engagement groove with an upward opening that press-fits the contact from above in the mounting portion of the contact, so that the holder body is sandwiched between the printed circuit board and the contact to be soldered to the printed circuit board. Can stick. Therefore, even when subjected to an impact such as a drop, the holder main body can be prevented from being detached from the printed circuit board by the bonding force of the contact with the soldered printed circuit board.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0017]
The battery holder 1 according to this embodiment is configured by providing the holder body 2 with two contacts 3 and 4.
[0018]
The holder main body 2 is integrally formed of a thermoplastic resin having elasticity, and a total of four columnar lock portions 5 are provided outside the normal storage position of the button-type battery B. As shown in FIG. 4, each lock portion 5 is inwardly inclined in the direction of the center point P <b> _{1 of the} button-type battery B by the angle θ <b> _{1 with} respect to the vertical line Lv. ing. A claw portion 5b for holding the upper surface Bu of the button-type battery B accommodated in the holder main body 2 projects from the upper surface of the facing surface 5a. The claw portion 5b has a locking surface for locking to the upper surface Bu. 5c is is formed to be inclined downward as the angle theta ₂ to the horizontal Lh. In the angle theta ₁ and angle theta _2, the latter has a larger angle, thus facing surfaces 5a are locking surface 5c also deflected up along the vertical line Lv is a button type battery B in a state inclined downward The upper surface Bu is locked. Moreover, the bottom part 5d which spreads outward is formed in the lower end of the lock part 5 (refer FIG. 4).
[0019]
A holding wall 6 that is shorter than the lock portion 5 by a length d1 is integrally formed on one side surface of each lock portion 5 (see FIG. 5). The holding wall 6 partially surrounds the circumferential side surface Bs of the button-type battery B in the circumferential direction, and holds the button-type battery B in a state of being slightly in contact with the circumferential side surface Bs so as not to be pressed. .
[0020]
Contact mounting portions 8 and 9 are provided on the other side surface side of each lock portion 5 via a grooved slit 7. Thus, since the groove-shaped slit 7 is interposed between the lock portion 5 and the contact mounting portions 8 and 9, the flexibility of the lock portion 5 is not hindered. A mounting groove 8a is formed in the contact mounting portion 8, and the contact 2 that is in conductive contact with the lower surface Bd of the button-type battery B forming one electrode is press-fitted and fixed therein. A similar mounting groove 9a is also formed in the contact mounting portion 9, and the contact 4 that is in conductive contact with the peripheral side surface Bs of the button-type battery B forming the other electrode is press-fitted and fixed therein.
[0021]
The contact 3 is formed with a tail portion 3a, a bent portion 3b, and a spring contact portion 3c. The tail portion 3a is a portion to be soldered to the printed circuit board 10 and has a shape corresponding to the pattern shape of the board circuit. The bent portion 3b is formed with a fixed portion 3e extending left and right from the bent central portion 3d. A locking claw 3f protrudes laterally from the fixed portion 3e. When the contact 3 is inserted into the mounting groove 8a of the contact mounting portion 8, the locking claw 3f bites into and locks the inner wall, and the contact 3 is fixed to the holder body 2 by this locking force. The spring contact portion 3c extends from a base end portion 3g that is a connecting portion with the bent portion 3b, and two contact points that elastically conduct contact with the lower surface Bd of the button-type battery B on the front end side of the bifurcated shape. A portion 3h is formed. The base end portion 3g of the spring contact portion 3c is located within the thickness of the bottom mold of the holder body 2, and a sufficient spring length can be secured in both the length direction and the vertical direction. ing. Thus, the reason why the spring length can be sufficiently secured is that the holder body 2 is formed with the U-shaped cutout portion 2a having a large notch shape substantially corresponding to the outer shape of the contact 3. And since this U-shaped thinning part 2a was formed, the contact attachment part 8 is the shape divided | segmented into right and left, and the usage-amount of resin has decreased.
[0022]
Similarly to the contact 3, the contact 4 also has a tail portion 4 a soldered to the printed circuit board 10, a bent portion 4 b bent in a U-shaped cross section, and a spring in conductive contact with the peripheral side surface Bs of the button-type battery B forming the other electrode. A contact portion 4c is formed. The bent portion 4b of the contact 4 is also provided with a fixing portion 4d extending in the left-right direction, and the inner wall of the mounting groove 9a formed in the contact mounting portion 9 of the holder body 2 by the locking claw 4e of the fixing portion 4d. The contact 4 is fixed to the holder body 2 by this locking force.
[0023]
Next, the operation and effect of the battery holder 1 configured as described above will be described.
[0024]
(1). State the battery holder 1 in the embodiment, since projecting from the Hashiragata the lock portion 5 on the outside of the yield capacity position of the button-shaped battery B (position B in FIG. 2), which is out slightly from the yield capacity position (B) Even if the button-type battery B is pushed in from above, the lock portion 5 is highly flexible and can be bent flexibly. Because of this high flexibility, the mounting hardness of the button-type battery 5 can be reduced.
[0025]
(2). For example, in the case of a lock portion 5 'formed vertically without facing the facing surface 5a' as shown by a two-dot chain line in Fig. 6 (a), the lock portion 5 'is regular due to the dimensional error of the button battery B or the holder body 2'. When the button-type battery B is relatively larger than the storage space of the battery, and the continuous press from the stored button-type battery B is received, the lock portion 5 'largely warps outward as shown by the solid line, and its root There is a risk of cracking due to stress concentration in the vicinity. However, in the lock portion 5 of this embodiment, as shown by a two-dot chain line in FIG. 6B, the facing surface 5a facing the peripheral side surface Bs of the button-type battery B is inward in the direction of the center point P1 of the button-type battery B. Since it is tilted, the amount of bending of the lock portion 5 is large accordingly. Therefore, even if the button-type battery B is slightly larger than the accommodation space of the holder body 2 due to the dimensional error of the button-type battery B or the holder body 2, even if the button-type battery B is continuously pressed, Therefore, the dimensional error can be absorbed, and the occurrence of cracks near the base of the lock portion 4 can also be prevented.
[0026]
(3). Depending on the dimensional error of the button-type battery B or the resin-molded holder main body 2, for example, the upper surface position of the button-type battery B is higher in the height direction than the regular housing position (B), In some cases, the button-type battery B is relatively larger than the housing space, and the button-type battery B housed in the lock portion 5 is continuously pressed and warped. In such a case, as shown by a two-dot chain line in FIG. 6 (a), when the locking surface 5c 'to be locked to the upper surface Bu of the button-type battery B is horizontal, as shown by a solid line in FIG. 6 (a). When the horizontal locking surface 5c 'is warped upward, the button-type battery B is locked by point contact with the upper surface Bu of the button-type battery B. The button battery B is detached relatively easily. However, since the lock part 5 of this embodiment inclines the locking surface 5c of the nail | claw part 5b downward as shown by a dashed-two dotted line in FIG.6 (b), FIG.6 (b) also in such a case. ), The locking surface 5c is locked in surface contact with the upper surface Bu of the button-type battery B as indicated by a solid line. Accordingly, a sufficient locking force can be exerted, and the button-type battery does not come off even when subjected to an impact due to dropping or the like.
[0027]
(4). Since the holding wall 6 integrally formed with the lock portion 5 partially surrounds the circumferential side surface Bs of the button-type battery B in the circumferential direction, even when an impact due to dropping or the like is applied, the button-shaped battery B is formed in the button shape. It is possible to prevent the battery B from being detached. Moreover, since the holding wall 6 is integrally formed with a height lower than the height of the lock portion 5, the flexibility of the lock portion 5 is hardly hindered, and the lock portion 5 is prevented from being excessively bent and external force. Can be reinforced.
[0028]
(5). Further, the holder body 2 is formed in a substantially rectangular shape that is large in the longitudinal direction and small in the direction orthogonal to the longitudinal direction with respect to the diameter size of the button-shaped battery B accommodated in the regular accommodating position. Since the lock part 5 and the holding wall 6 are formed in a substantially rectangular diagonal position that is an empty space that does not interfere, the mounting area for the printed circuit board 10 can be reduced.
[0029]
(6). Since the mounting grooves 8a and 9a having an upward opening shape into which the contacts 3 and 4 are press-fitted from above are formed in the contact mounting portions 8 and 9 formed in the holder main body 2, the printed circuit board 10 and the contacts 3 to be soldered to the printed circuit board 10 are formed. 4 can be fixed to the printed circuit board 10 so as to sandwich the holder body 2 therebetween. Therefore, the holder body 2 can be prevented from being detached from the printed circuit board 10 by the bonding force of the contacts 3 and 4 to the soldered printed circuit board 10 even under impact such as dropping.
[0030]
The battery holder 1 according to the embodiment of the present invention as described above can be modified as follows.
[0031]
Moreover, in the said embodiment, as shown in FIG. 4, although the bottom part 5d was formed in the lower end of the lock part 5, the example which set the bending fulcrum P2 to the lock part 5 was shown, For example, as shown with a broken line in FIG. Alternatively, the skirt portion 5d may be eliminated, and the bending fulcrum P3 may be set at the lower end portion of the lock portion 5. In the former, the lock portion 5 bends around the bending fulcrum P2, but according to the latter, the bending fulcrum P3 becomes the lower end of the lock portion 5, so that the overall flexibility of the lock portion 5 can be further improved.
[0032]
In the above embodiment, the height of the holding wall 6 is constant. However, as shown by a broken line in FIG. 5, for example, a recessed portion 6 a having a downward notch shape may be formed in a continuous portion with the lock portion 5. According to this, it is possible to further improve the flexibility of the lock portion 5 while maintaining the function of preventing the button-type battery B from being held by the holding wall 6.
[0033]
【The invention's effect】
In the battery holder of the present invention, since the lock part protrudes in a column shape outside the normal storage position of the button-type battery, even if the button-type battery is pushed in from the upper side in a state slightly deviated from the normal storage position, the lock part The button-type battery can be accommodated by being highly flexible and flexible. Further, since the facing surface of the lock portion facing the peripheral side surface of the button-type battery is turned inward in the center direction of the button-type battery, the amount of bending of the lock portion is large accordingly. For this reason, the button-type battery is slightly larger than the housing space of the holder body due to the dimensional error of the button-type battery or the holder body, and even if the button-type battery stored is continuously pressed, the dimensional error is absorbed by the large amount of deflection. It is possible to prevent the occurrence of cracks near the base of the lock portion.
[0034]
In the battery holder of the present invention, a claw portion for holding the upper surface of the button-type battery is protruded on the opposite surface of the lock portion, and the locking surface of the claw portion that is locked to the upper surface is inclined downward. Even if the button-type battery or the resin-molded holder body has a dimensional error, for example, the upper surface position of the button-type battery is higher in the height direction than the normal housing position, and the lock part warps, the locking surface Is locked in a point contact state or a surface contact state inclined downward with respect to the upper surface of the button-type battery. Accordingly, a sufficient locking force can be exerted, and the button-type battery does not come off even when subjected to an impact due to dropping or the like.
[0035]
Since the battery holder of the present invention forms a holding wall that partially surrounds the peripheral side surface of the button-type battery in the circumferential direction, the button-type battery can be detached from the normal storage position even when an impact due to dropping or the like is applied. Can be prevented. In addition, since the holding wall is integrally formed with a height lower than the height of the lock portion, the lock portion is hardly hindered and the lock portion can be reinforced against excessive bending or external force.
[0036]
In the battery holder of the present invention, since the recessed part of the downward notch shape is formed in the continuous part of the holding wall with the lock part, the detachment preventing function of the button-type battery possessed by the holding wall remains unchanged, and the flexibility of the lock part is further improved. Can be made.
[0037]
In the battery holder of the present invention, the attachment portion of the contact that makes conductive contact with the button-type battery is formed in the holder body, and the engagement groove having the upward opening shape that press-fits the contact from above is formed in the attachment portion. It can be fixed to the printed circuit board so that the holder body is sandwiched between the circuit board and the contacts soldered thereto. For this reason, even when subjected to an impact such as dropping, the holder main body can be prevented from being detached from the printed circuit board by the bonding force of the contact with the soldered printed circuit board.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a battery holder according to an embodiment.
FIG. 2 is a plan view of a battery holder according to an embodiment.
3 is a cross-sectional view taken along line SA-SA in FIG.
4 is an enlarged sectional view taken along line SB-SB in FIG. 2;
5 is an enlarged sectional view taken along the line SC-SC in FIG.
6A and 6B are operation explanatory views of the lock portion of the battery holder, where FIG. 6A is an operation explanatory view of the lock portion according to a comparative example, and FIG. 6B is an operation explanatory view of the lock portion of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Battery holder 2 Holder main body 3, 4 Contact 5 Lock part 5a Opposite surface 5b Claw part 5c Locking surface 6 Holding wall 6a Recessed part 8, 9 Contact attachment part (attachment part)
8a, 9a Mounting groove (engagement groove)
10 Printed circuit board B Button type battery (regular housing position)
Bs Circumferential side Bu Upper surface P1 Center point of button-type battery

Claims

In the battery holder in which a lock portion that is locked to the upper surface of the button-type battery is formed on the holder body that accommodates the button-type battery,
That the facing surfaces of the locking portion facing the peripheral surface of the button-type battery was formed by inverting the inner to the center of the button-type battery as well as projecting locking portion on the outside of the yield capacity position of the button-type battery columnar A battery holder.

2. A battery holder according to claim 1, wherein a claw portion for holding the upper surface of the button-type battery is provided on the opposite surface of the lock portion so as to project and the locking surface of the claw portion to be locked to the upper surface is inclined downward. .

The battery holder according to claim 1 or 2, wherein a holding wall that partially surrounds the circumferential side surface of the button-type battery in the circumferential direction and that is lower in height than the lock portion is integrally formed with the lock portion.

The battery holder according to claim 3, wherein a concave portion having a downward notch shape is formed in a continuous portion of the holding wall with the lock portion.

5. A contact mounting portion for conductive contact with the button-type battery is formed in the holder body, and an upward opening-shaped engagement groove for press-fitting the contact from above is formed in the mounting portion. The battery holder according to item.