JP2005019320A

JP2005019320A - Battery with contact, socket for mounting battery on circuit board, and manufacturing method of battery with contact

Info

Publication number: JP2005019320A
Application number: JP2003185215A
Authority: JP
Inventors: Shoji Konishi; 昭治小西; Masaru Yamaguchi; 勝山口
Original assignee: Munekata Co Ltd
Current assignee: Munekata Co Ltd
Priority date: 2003-06-27
Filing date: 2003-06-27
Publication date: 2005-01-20
Anticipated expiration: 2023-06-27
Also published as: JP4009563B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery with a contact easy to mount, capable of being replaced freely, manufactured at low cost, contributing to the miniaturization and weight saving of an apparatus mounting it, a socket for mounting the battery on a circuit board, and to provide a manufacturing method of the battery with the contact. <P>SOLUTION: Respective contacts 5, 5a are fitted on a positive electrode face 3 and a negative electrode face 4 of a battery body 2, a dummy socket 150 is fitted to the battery body 2 in that state and mounted in a cavity 181 of a mold 180. The mold 180 is closed, a hotmelt agent is injected into the cavity 181, and the outside of the battery body 2 and the contacts 5, 5a are covered with an insulation coating layer 8 by a hotmelt agent and insulated. The battery 1 is mounted in free attachment and detachment by loading contact terminals 7, 7a on the socket 20 mounted on the circuit board 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、バックアップ電池を必要とする電子機器にあって電池の交換や使用済み電池の回収が必要な時、その電池の脱着を容易に可能ならしめるために電源となるコイン型電池またはボタン型電池に代表される電池にホットメルト剤による絶縁被覆層を形成すると同時に、回路基板に実装したソケットに対して電池を直接装着するためのコンタクトを一体に取り付けたコンタクト付電池及びこの電池を回路基板に実装するためのソケット並びに前記電池の製法に関するものである。
【０００２】
【従来の技術】
パソコン等に代表される各種の電子機器において、主にバックアップ用電源としてコイン型、またはボタン型電池が用いられている。このような電池としては、回路基板に設けられたコネクターと接続のために、電池にリード線を接続し、その先端にコンタクトを取り付けたものや、回路基板に直接半田付け等で接続するために端子を電池にスポット溶接等の工法で取り付けたもの等がある。
このような用途を有するコイン型、またはボタン型電池の一例として、ポリ塩化ビニール製の収縮チューブ等で絶縁被覆したものがあり、この例を図５２に示す。
【０００３】
図５２（ａ）及び（ｂ）はリード線付きのコイン型電池をポリ塩化ビニール製の収縮チューブで絶縁被覆する事例であって、この絶縁被覆は、図５２（ａ）に示すように予めコイン型電池本体２００の周縁をポリ塩化ビニール製またはＰＥＴ製の熱収縮チューブ２０１でドーナツ状に被覆することにより電極用端子を溶接する時に正極と負極がショートするのを防止している。その上で、コンタクト２０６付の各々リード線２０４、２０５に電極用端子板２０２、２０３を接続させてから電池本体２００の正極と負極面に端子板２０２、２０３をスポット溶接する。次に図５２（ｂ）に示すように熱収縮チューブ２０７を電池本体２００に被せ、外部からの熱風や輻射熱で熱収縮チューブ２０７を加熱収縮させることにより、電池本体２００に密着させ、この被覆層で絶縁を図っている。
【０００４】
しかし、この構造では、電池本体２００のコンタクト２０６部分を介して回路基板（図示せず）に設けられたコネクターに接続するため、ビニール線等を用いたリード線２０４、２０５等の接続部品が必要となり、コスト的にも不利である。
更に、本出願人は、特願平２００３−０６５５２８号にて電池に絶縁被覆層が容易に形成できる「電子部品の低圧、低温絶縁被覆方法」を提案している。この内容は、図５３に示す様に、電池本体２００とリード線２０４、２０５の先端２０４ａ、２０５ａを直接電池本体２００のそれぞれの極へスポット溶接などで接続し、次に、電池本体２００の周囲にはホットメルト接着剤層を形成し、この接着層を絶縁被覆層２０８としたものである。また、リード線２０４、２０５の引き出し部（ネック部）２０９も絶縁被覆層２０８で一体に覆い、且つ、リード線２０４、２０５の樹脂被覆層と前記絶縁被覆層２０８は成形時に互いに融着させている。
【０００５】
更に、他の電池形態として、図５４に示すような電池本体２００の正極面２１０と負極面２１１に端子２１２、２１３をスポット溶接した構成の電池もあるが、この場合、電池本体２００の表面が絶縁されておらず、他の電子部品などと接触した場合、ショートなどの危険性がある。また、この電池の場合、端子２１２、２１３を図５５に示す様に回路基板３００に差し込み、半田付け２１４、２１５を行うため、電池の交換が容易に出来ないという欠点がある。
他の例として、コイン型電池そのものを回路基板上に接続固定するのではなく、電池を保持するためのホルダーが回路基板上に実装されていて、このホルダーへ電池を挿入することにより電気的に接続されるように構成したものもある。しかし、この場合、ホルダーを予め回路基板上に実装しておくことが必要であり、且つ、電池を収納するためホルダーを大きくする必要があることから、小型化や、コストの面で不利である。
【０００６】
【発明が解決しようとする課題】
以上の様に、前記図５２に示したコイン型またはボタン型電池を被覆する方法は、
１．スポット溶接部分の補強に電子用端子板２０２、２０３を使用しなければならず、コスト高となるばかりでなく、強度的にも不完全である。
２．電池本体２００の周縁全体を熱収縮チューブ２０１で覆う必要があり、電池本体２００と熱収縮チューブ２０１の位置決めが難しく、そのため、被覆位置がズレたりして商品価値が低下する。
３．電極用端子板２０２、２０３の加工及び溶接と、コイン型電池を予めドーナツ状に熱収縮チューブ２０１で被覆し、次に全体を熱収縮チューブ２０７で被覆するため、二度の加熱工程があり、生産性が悪い。
４．電極用端子板２０２、２０３とコンタクト２０６の間にリード線２０４、２０５を介在させなければならないため、材料面、加工面でもコスト高となる。
５．熱収縮チューブ２０１、２０７の材料にポリ塩化ビニールを用いている場合は、廃棄物となった時に環境への悪影響が懸念される。
６．特願２００３−０６５５２８号による被覆方法の場合には、リード線２０４、２０５やコンタクト２０６用のハウジング、更にはそれぞれをカシメ、溶接等で接続する工数などが必要になることから、これらの工数分コストがかかる。
などの問題がある。
【０００７】
本発明は、係る従来例に見られる欠点を有しないコンタクト付電池及びこの電池用を回路基板に実装するためのソケット並びに前記電池の製法を提供するのが目的であって、その第１の目的は、リード線を介在させず且つ電極用端子板、更にはコンタクトのハウジングをも必要とせず、電池本体に絶縁被覆層を形成する時に同時にコンタクト部のハウジング機能をも一体形成した電池を提供することである。
次に、第２の目的は、回路基板等に対して簡単に実装することができると共に、電池の交換あるいは分別廃棄が簡単に出来る電池を提供することである。
次に、第３の目的は、上記第１、第２の目的を達成した電池を、回路基板に簡単に実装するためのソケットを提供することである。
次に、第４の目的は、上記第１、第２の目的を達成する電池を能率的に製造することが可能な製法を提供することである。
【０００８】
【課題を解決するための手段】
上記、第１及び第２の目的を達成するため、請求項１に記載の発明においては、コンタクト付電池において、電池本体の正極面と負極面に夫々コンタクトの電極用端子部を接続すると共に前記コンタクトの先端には夫々コンタクト端子部を形成したこと、前記電池本体及びコンタクトの外側にはホットメルト剤で絶縁被覆層を形成し、前記コンタクト端子部は、前記絶縁被覆層に形成した正極側コンタクト端子孔と負極側コンタクト端子孔内に位置させたことを特徴とするものである。
【０００９】
更に、請求項２に記載の発明においては、請求項１に記載の発明において、絶縁被覆層の外表面であって、コンタクト端子部が位置する端子部被覆層の外側には、実装時に正極と負極をとり違えないようにするための誤装着防止手段が形成されていることを特徴とするものである。
【００１０】
更に、請求項３に記載の発明においては、請求項１に記載の発明において、絶縁被覆層の外表面であって、コンタクト端子部が位置する端子部被覆層の外側には、コンタクト端子部をソケットに装着したときに、その抜け止めとなる掛合手段が形成されていることを特徴とするものである。
【００１１】
更に、請求項４に記載の発明においては、請求項１において、絶縁被覆層は、ホットメルト剤で形成されていることを特徴とするものである。
【００１２】
更に、請求項５に記載の発明においては、ソケットにおいて、低部と側部を閉塞し、上方を開放したソケット本体の前記低部には、上方に向けて正極と負極から成る電極ピンを夫々突設したこと、前記ソケット本体の一部には、電池側の誤装着防止手段との共働作用で正極と負極の端子部の装着を取り違えることがないようにするためのソケット側誤装着防止手段を形成し、更に、電池側に形成した掛合手段との共働作用で電池側の端子部を一旦装着した後、電池が簡単に外れるのを防止するためのソケット側掛合手段を形成したことを特徴とするものである。
【００１３】
更に、請求項６に記載の発明においては、コンタクト付電池の製法において、
ａ．金属性導電板に電極用端子形成部とコンタクト端子形成部から成るコンタクト形成板を打ち抜き加工する、
ｂ．前記コンタクト形成板において、コンタクト端子形成部を折り曲げ加工して断面Ｕ字状であって、奥の部分にゲート有し、且つ、先端を開放した構成のコンタクト端子部を形成する、
ｃ．前記コンタクト端子部を挿入することが出来る端子部収容凹溝を形成した端子部収容ボスと、このボスの凹溝内であって、前記端子部内にその先端側から入る固定ピンを夫々併設し、且つ前記凹溝及び固定ピンの位置関係は、互いに反対方向を向くように設定された絶縁性ダミーソケットを用いて、
ｄ．先ず、前記コンタクト形成板の一つの端子部にダミーソケットの端子部収容凹溝を外挿し、併せて固定ピンを端子部内に挿入したのち、導電板からコンタクト形成板をカットしてコンタクト形成板を切り離す、
ｅ．次に、ダミーソケットを１８０°回転してもう一方のボスの端子部収容凹溝を隣のコンタクト形成板の端子部に外挿し、併せて固定ピンを端子部内に挿入したのち、導電板からコンタクト形成板をカットしてコンタクト形成板を切り離す、
ｆ．次に、前記２板のコンタクト形成板の電極用端子形成部間に電池本体を挟み込み、電極用端子形成部を電池本体の正極と負極面に夫々スポット溶接する、
ｇ．次に、金型のキャビティ内に電池本体とダミーソケットが一体となったものを絶縁スペーサを用いて固定し、型閉めしてホットメルト剤をキャビティ内に充填することにより、電池本体の外側及びコンタクト形成板の外側並びにダミーソケットにおいて、ボスの外側の部分にホットメルト剤による絶縁被覆層を形成する、
ｈ．次に、金型を開き、キャビティ内から絶縁被覆層で覆われた電池本体とダミーソケットを取り出し、ダミーソケットを電池本体側のコンタクト端子部から引き抜くことにより、コンタクト端子部の周囲にこの抜きとりによるコンタクト端子孔を形成すると共にこの端子孔内にコンタクト端子部を露出させて製品とする、
ｉ．ことを特徴とするものである。
【００１４】
更に、請求項７に記載の発明において、請求項６において、コンタクト端子形成部の先端側の側面の上端縁の一部を内側にプレスして対向するように凸部を形成することにより、このコンタクト端子形成部をＵ字状に折り曲げ加工したときに、コンタクト端子部のＵ字状の上縁に係合部を形成し、ソケット側の電極ピンがＵ字状のコンタクト端子部内にスムーズに挿入され、且つ電池をソケットに装着したときに、電池が安定するように工夫したことを特徴とするものである。
【００１５】
【作用】
電池には、端子部を形成したコンタクトが直接取り付けられており、更に、電池とコンタクトの外側はホットメルト剤による絶縁被覆層で保護されているため、ショートしたりしない。又、電池にコンタクトが直接取り付けられているため、電池を回路基板のソケットに直接実装することができると共に電池交換あるいは分別が必要となったときには、ソケットから簡単に取り外すことができる。
電池とソケットには、電池の正極と負極をとり違えて装着しないように誤装着防止手段が形成されていることから間違うことがないと共に、掛合手段により電池が妄りに外れたりしない。
【００１６】
【発明の実施の形態】
本発明に係る電池は、コイン型またはボタン型電池などをパソコンなどの電子機器に実装し、メモリーのバックアップ等をする目的において使用されるもので、電池と、この電池のコンタクトは、ホットメルト剤による絶縁被覆層で被われている。
使用する成形用金型は、ホットメルト剤成形に使用される一般的なアルミ材が用いられているが、コンタクトを保持する部分、電池の固定ガイド部分には絶縁材が使用されている。
【００１７】
絶縁被覆層形成用のホットメルト剤は、一般的に使用されている汎用のポリアミド系のもので良い。ホットメルト剤の主成分であるポリアミドは、一般的に言われる樹脂成形用の石油系のポリアミドとは異なり、結晶化温度も低くホットメルト剤の溶解温度も低い。更に成形時の射出圧力も低いために電池に加えられる熱的影響を低く抑えることが出来る。更には、スポット溶接部分にかかる成形時の圧力も抑えることが出来るため、絶縁被覆層の形成には良好である。
【００１８】
【実施例１】
本実施例１は、請求項１〜４に記載した本発明に係るコイン型電池の実施例であって、図１〜図３は、ホットメルト剤による絶縁被覆層を形成する前であって、電池本体の正と負の極面にコンタクトを取り付けた状態の説明図、図４〜図７は、電池本体及びコンタクトの外側をホットメルト剤による絶縁被覆層で被った状態の説明図である。
この図１〜図７において、符号の１は電池、２は電池本体、３はこの電池本体２の正極面、４は負極面、５は正極面３に取り付けられたコンタクト、５ａは負極面４に取り付けられたコンタクトであって、上記コンタクト５、５ａは電池本体２の正極面３と負極面４に夫々スポット溶接されている電極用端子部６、６ａと、この電極用端子部６、６ａから電池本体２の周縁に空隙ａを形成して突出しているコンタクト端子部７、７ａとから成る。そして、このコンタクト端子部７、７ａは、図３４に示すように、側板７ｂ、７ｃと底板７ｅで断面Ｕ字状に形成されていて、先端側にはソケット側の電極ピン挿入口７ｆを形成すると共に側板７ｂ、７ｃの上縁には凸部７ｇ、７ｈを形成し、コンタクト端子部７の基部にはゲート７ｄ、７ｄ´を形成した構成から成る。
ホットメルト剤による絶縁被覆層８は、図４〜図７に示すように、前記した電池本体２とコンタクト５、５ａをその外側から完全に被覆している。但し、端子部７、７ａは、正極側と負極側がホットメルト剤で区画されていて、電極ピン挿入口７ｆ側のみが電極ピン挿入孔１１、１２内に露出している。
また、端子部７、７ａの外表面であって、端子部被覆層１０の外側には、突起１３が形成されていて、この突起１３は、後述するソケット２０に装着するときに、正極と負極をとり違わないようにするためのものである。
また、端子部被覆層１０の外側には、段部１４が形成されていて、この段部１４は、ソケット２０に電池１を装着したときに、外れないようにするための掛け合いとして機能する。
【００１９】
【実施例２】
本実施例２は、実施例１に説明した電池を回路基板に実装するときに用いられるソケットに関し、請求項５に対応している。
このソケット２０は、図８〜図１１に示すように、底板２２と四方をとり囲む側板２３及び、上方を開放した枡状ソケット本体２１から成り、底板２２には正極用電極ピン２４と負極用電極ピン２５が直立し、背板２６には電池１側に形成した段部１４に係合する爪２７が形成され、側板２３の一方には、上縁から下向きに電池１側に形成した突起１３が係合するスリット２８が形成されている。２９は回路基板３０側に対するハンダ付け部である。
図１２（Ａ）、図１３、図１４は、回路基板３０にソケット２０を実装し、このソケット２０に電池１を装着した状態を示すものである。図１２（Ｂ）は、回路基板３０にソケット２０を横向きに寝かせ、電池１を水平に実装した例である。３１、３２は正極側と負極側のリードである。
【００２０】
【実施例３】
本実施例３は、図１５〜図１８に示すように、端子部７、７ａを電池本体２の周囲内に収めて小型化を図った電池１の例であって、このコンタクト５、５ａのコンタクト端子部７、７ａは、偏平な鞘状に形成されている。図１９は、ホットメルト剤による絶縁被覆層８を電池本体２とコンタクト５、５ａの外側に形成し、コンタクト端子部７、７ａの挿入口１１、１２のみを開口した状態の電池１を示すものである。
なお、図１８において、（Ｂ）は実施例３の電池１に絶縁被覆層８を形成するためのダミーソケットを示すものであって、この詳細は後述する。
【００２１】
【実施例４】
本実施例４は、実施例３に示した電池用ソケットの例であって、図２０において、このソケット４０は、底板４１から正極用電極片４２と負極用電極片４３を突出させると共に位置決めリブ４４を突出させ、この電極片４２、４３に電池１のコンタクト端子部７、７ａを夫々装着して、図２１に示すように回路基板３０に電池１を実装するものである。
【００２２】
【実施例５】
本実施例５は、回路基板３０へコンタクト付電池１を水平に実装することができるように構成した例であって、図２２は、ホットメルト剤による絶縁被覆層８で被覆されたコンタクト付電池１の平面図、図２３は側面図、図２４は斜視図、図２５はＤ−Ｄ´部断面図、図２６は本実施例５の電池１を回路基板に実装するときに用いられるソケット５０の斜視図、図２７はソケット５０の平面図、図２８は図２７におけるＥ−Ｅ´線断面図、図２９〜図３１は回路基板３０へソケット５０を介して電池１を実装した状態の説明図である。
【００２３】
本実施例５に用いるコンタクト５、５ａは、Ｌ型に形成されており、断面を示す図２５から判るように、電池本体２の正極面３と負極面４にコンタクト５、５ａの電極用端子部６、６ａを接続した時、電池本体２は、コンタクト端子部７、７ａの方向に対して水平になる形状となっている。
本実施例５の電池１において、コンタクト５、５ａを取り付けた電池本体２及びコンタクト５、５ａの外側にはホットメルト剤による絶縁被覆層８を形成するのは実施例１と同様である。
図２６〜図２８は、実施例５の電池１に用いられるソケット５０の具体例である。このソケット５０には、絶縁被覆層８で被われたコンタクト５、５ａの部分が挿入されるホルダー孔５１、５２が形成してあり、各々のホルダー孔５１、５２内にはコンタクト端子部７、７ａを受ける電極５３、５４が具備されている。
本実施例５では、誤挿入用の手段は設けていないが、前記実施例１同様に誤装着防止手段を設けることは可能である。
図２９〜図３１は、実施例５の電池１を回路基板３０へソケット５０を介して実装した様子を示す説明図である。
【００２４】
【実施例６】
本実施例６は請求項６、７に記載の発明に対応するコンタクト付電池の製法である。以下、図３２〜図５１を参照しつつ詳細に説明する。
先ず、図３２に示すように、燐青銅などのバネ性を有する板材の導電板１００を同一ピッチで打ち抜くことにより、電極用端子形成部１０２とコンタクト端子形成部１０３から成るコンタクト形成板１０１を形成する。
次に、このコンタクト形成板１０１には、図３３で示すように、コンタクト形成板１０１におけるコンタクト端子形成部１０３側にカット部１０１ａを形成し、更に突起（凸部）７ｇ、７ｈをプレス加工し、更にコンタクト端子形成部１０３には、図３４に示すように、側板部７ｂ、７ｃを起立させると共にゲート７ｄ、７ｄ´を起立させ更に９０°水平方向に折り曲げて断面Ｕ字状のコンタクト端子部７、７ａを形成する。
【００２５】
図３５は、実施例６の電池製造時に用いるダミーソケットであって、このダミーソケット１５０は、図３５に示すように、本体１５１の先端面１５１ａに凹溝１５４、１５５を形成したボス１５２、１５３を凹溝１５４、１５５が互いに逆方向を向くようにして突出させ、このボス１５２、１５３の凹溝１５４、１５５の前に沿ってダミー電極ピン１５６、１５７を夫々突設し、本体１５１の胴体部にガイド孔１５８を設けた構成から成る。
上記構成から成るダミーソケット１５０をコンタクト端子部７、７ａに外挿する直前を示したのが図３６、図３７、図３９である。
上記したコンタクト形成板１０１とダミーソケット１５０を用い、射出成形金型を用いてホットメルト剤による絶縁被覆層８を電池本体２の外に形成する工程を次に説明する。
【００２６】
図３７及び図３９に示すように、導電板１００のコンタクト端子部７にダミーソケット１５０のボス１５２側を対向させた後、ボス１５２の凹溝１５４内にコンタクト端子部７を結合させる。その時の様子について全体図を図３８に示し、拡大図を図４０に示す。この結合は、先ず、図３７及び図３９に示すように、ダミーソケット１５０のボス１５２の凹溝１５４を下向きに設定し、この状態で凹溝１５４をコンタクト端子部７に外挿する。このとき、コンタクト端子部７内には、ダミー電極ピン１５６が同時に挿入される。
次に、図４０、図４１に示すように、このダミーソケット１５０が装着されたコンタクト形成板１０１を導電板１００から切り離し（導電板１００より切り離すことにより、コンタクト形成板１０１はコンタクト５、５ａとなる）、次に図４１において矢印ｂに示すように、ダミーソケット１５０を１８０°回転させたのち、図４２に示すように、コンタクト端子部７ａにボス１５３を対向させ、さらに、図４３に示すように、次のコンタクト形成板１０１のコンタクト端子部７ａにボス１５３の凹溝１５５及び電極ピン１５７を結合させ、次に図４４に示すように、コンタクト端子形成板１０１を導電板１００から切り離す。
【００２７】
次に、図４５に示すように、電池本体２をコンタクト５、５ａの電極用端子部６、６ａ間に挟み込み、図４６に示すように電極用端子部６、６ａを電池本体２の電極面３、４に夫々スポット溶接を行う。
次に、図４７に示すような金型１８０及びホットメルト剤充填ユニット１８５、導管１８６から成る装置を用いて絶縁被覆層８を形成する。先ず、図４８に示す金型のキャビティ１８１について説明すると、電池本体２の円周側に相当するキャビティ１８１壁面に位置決めリブ１８２を要所に設けている。なお、位置決めリブ１８２は他方の金型へ設けるかどうかについては自由に選択できる。また、電池本体２の正極面３及び負極面４に対応する両キャビティ面については、保持ピン１８９を金型１８０が閉じたとき電池本体２を挟む様に両金型へ具備している。保持ピン１８９については負極面４は絶縁材を使用するが、正極面３においては絶縁材または金属材でもよい。
この位置決めリブ１８２と保持ピン１８９の作用により、電池本体２の周囲はキャビティ面との間に均等な空隙が形成される。
その他に、ダミーソケット１５０のガイド孔１５８へ挿入されるガイドピン１８８などを形成した金型１８０内に電池本体２とダミーソケット１５０を組み込み、金型１８０を閉じ、ホットメルト剤をスプルー１８３からゲートを経由してキャビティ１８１内に注入して、電池本体２とダミーソケット１５０のボス１５２、１５３の外側に絶縁被覆層８を形成する。このホットメルト剤の注入時に、端子部７、７ａのゲート７ｄ、７ｄ´が端子部７、７ａ内にホットメルト剤が侵入するのを防ぎ、ダミーソケット１５０のピン１５６、１５７はコンタクト端子部７、７ａが注入圧で動くのを固定する。
【００２８】
次に、図４９に示すように、金型１８０を開き、絶縁被覆層８が形成された電池１とダミーソケット１５０を一緒に取り出す。
図５０は、このようにして取り出された電池１とダミーソケット１５０を示すもので、スプルースクラップ１８４をカットしたのち、図５１に示すように、ダミーソケット１５０を電池１側から引き抜く。このようにすると、ダミーソケット１５０のボス１５２、１５３が抜けた跡に、電極ピン挿入口１１、１２が形成され、この挿入口１１、１２内にコンタクト端子部７、７ａが露出する。以上が、請求項１〜４に記載した電池１の製法であるが、実施例３、５に記載した電池１についても、同様の製法で絶縁被覆層８を形成することができる。この時、実施例３の電池１については、図１８（Ｂ）に示すダミー端子１５１ａ、１５２ａ、ガイド孔１５８ａ付のダミーソケット１５０ａを用いる。実施例６の製法で製造された電池１は、図４〜図７に示した完成品となる。
【００２９】
【発明の効果】
以上説明したように、本発明のコンタクト付電池は、電池本体全体及びコンタクトをホットメルト剤による絶縁被覆層で一体に被覆した。さらに、専用のソケットを用いて電池を回路基板へ実装することができるように構成したことにより、次の効果を奏する。
１，本発明のコンタクト付電池は、ホットメルト剤の本来の特性である接着性により、コンタクトの電極用端子部は電池本体により良く密着し、電池本体とコンタクトの接合強度を更に補強することが出来ると共に、電池全体の絶縁を図ることができる（請求項１〜４）。
２，本発明のコンタクト付電池は、コンセント機能も備えているので、従来例に示すリード線や電極用端子が必要でないばかりでなく、また、機器の小型、軽量化にも貢献することが出来る。その結果、これらを構成する上で必要となる加工費も不要となり、経済的効果は計り知れない（請求項１〜４）。
３，本発明のコンタクト付電池は、着脱自在のソケットを備えているため、電池交換の出来なかった様式のものも容易に交換できるようになる（請求項１〜５）。
４，本発明のコンタクト付電池は、成形金型を用いてホットメルト剤による絶縁被覆層を形成する時、ダミーソケットにてコンタクト端子部を保持するため、寸法精度の高いコンタクトを形成することができる（請求項６）。
５，本発明のコンタクト付電池は、コンタクト端子部にホットメルト剤の侵入防止用のゲートを設けたことにより、端子部の孔の形成が容易であり、更に、本発明の電池とソケットには、回路基板へ実装するとき誤挿入を防止する手段を設けていることにより、誤接続の危険を防止することができる（請求項２）。
６，本発明のコンタクト付電池とそれに用いるソケットには、お互いに掛け合わせ手段を有しているため、確実な接合と、一旦装着したのち、妄りに外れたりしない（請求項３）。
７，本発明による電池の製法によると、コンタクト付電池を能率良く、低コストにより生産できる（請求項６、７）。
【図面の簡単な説明】
【図１】実施例１による電池本体にコンタクトを取り付けた状態の負極面側から見た正面図。
【図２】図１の側面図。
【図３】図１の下面図。
【図４】絶縁被覆層を成形した電池の負極面側から見た正面図。
【図５】図４の下面図。
【図６】図４の斜視図。
【図７】Ａ−Ａ´線断面図。
【図８】ソケットの平面図。
【図９】ソケットの側面図。
【図１０】ソケットの斜視図。
【図１１】Ｂ−Ｂ´線断面図。
【図１２】（Ａ）はソケットに電池を装着した状態の斜視図。（Ｂ）はソケット及び電池を水平に寝かせて回路基盤に実装した状態の説明図。
【図１３】ソケットに電池を装着した状態の正面図。
【図１４】Ｃ−Ｃ´線断面図。
【図１５】実施例４による電池であって、絶縁被覆層を形成する前の正面図。
【図１６】図１５の下面図。
【図１７】図１５の側面図。
【図１８】（Ａ）は図１５の電池。（Ｂ）はダミーソケットの説明図。
【図１９】絶縁被覆層を形成した図１５の電池の斜視図。
【図２０】図１５の電池用ソケットの説明図。
【図２１】図１５の電池を図２０のソケットに装着した状態の説明図。
【図２２】実施例５の電池の説明図。
【図２３】図２２の電池の説明図。
【図２４】図２２の電池の斜視図。
【図２５】Ｄ−Ｄ´線断面図。
【図２６】図２２の電池用ソケットの説明図。
【図２７】図２６のソケットの平面図。
【図２８】Ｅ−Ｅ´線断面図。
【図２９】図２２の電池を図２６のソケットに装着し、回路基板に実装した状態の説明図。
【図３０】図２９の側面図。
【図３１】Ｆ−Ｆ´線断面図。
【図３２】コンタクト端子形成板の説明図。
【図３３】コンタクト端子形成部の説明図。
【図３４】端子部の説明図。
【図３５】ダミーソケットの説明図。
【図３６】端子部にダミーソケットを結合する直前の説明図。
【図３７】本発明に係るコンタクト付電池の製法の説明図。
【図３８】本発明に係るコンタクト付電池の製法の説明図。
【図３９】本発明に係るコンタクト付電池の製法の説明図。
【図４０】本発明に係るコンタクト付電池の製法の説明図。
【図４１】本発明に係るコンタクト付電池の製法の説明図。
【図４２】本発明に係るコンタクト付電池の製法の説明図。
【図４３】本発明に係るコンタクト付電池の製法の説明図。
【図４４】本発明に係るコンタクト付電池の製法の説明図。
【図４５】本発明に係るコンタクト付電池の製法の説明図。
【図４６】本発明に係るコンタクト付電池の製法の説明図。
【図４７】本発明に係るコンタクト付電池の製法の説明図。
【図４８】本発明に係るコンタクト付電池の製法の説明図。
【図４９】本発明に係るコンタクト付電池の製法の説明図。
【図５０】本発明に係るコンタクト付電池の製法の説明図。
【図５１】本発明に係るコンタクト付電池の製法の説明図。。
【図５２】（ａ）（ｂ）は従来のリード線付電池の説明図。
【図５３】従来のリード線付電池の説明図。
【図５４】従来の端子付電池の説明図。
【図５５】従来の端子付電池を回路基板に実装した状態の説明図。
【符号の説明】
１電池
２電池本体
５、５ａコンタクト
６、６ａ電極用端子部
７、７ａコンタクト端子部
８絶縁被覆層
９電池本体被覆層
１０端子部被覆層
１３突起
１４段部
２０ソケット
２３スリット
２５爪
３０回路基板
１００導電板
１０１コンタクト形成板
１０２電極用端子形成部
１０３コンタクト端子形成部
１５０ダミーソケット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device that requires a backup battery, and when a battery needs to be replaced or a used battery must be collected, a coin-type battery or button-type battery that becomes a power source in order to enable easy removal of the battery A battery with a contact in which an insulating coating layer is formed by a hot melt agent on a battery typified by a battery, and at the same time a contact for directly attaching the battery to a socket mounted on the circuit board is mounted, and the battery is connected to the circuit board. And a method for manufacturing the battery.
[0002]
[Prior art]
In various electronic devices typified by personal computers and the like, coin-type or button-type batteries are mainly used as a backup power source. As such a battery, in order to connect with a connector provided on a circuit board, a lead wire is connected to the battery and a contact is attached to the tip of the battery, or it is connected to a circuit board directly by soldering or the like. There are those in which the terminal is attached to the battery by a method such as spot welding.
As an example of a coin-type or button-type battery having such a use, there is one that is insulation-coated with a shrink tube made of polyvinyl chloride or the like, and this example is shown in FIG.
[0003]
52 (a) and 52 (b) show an example in which a coin-type battery with a lead wire is insulated by a shrinkable tube made of polyvinyl chloride, and this insulation coating is previously applied to a coin as shown in FIG. 52 (a). The peripheral edge of the battery body 200 is covered in a donut shape with a heat-shrinkable tube 201 made of polyvinyl chloride or PET, thereby preventing a short circuit between the positive electrode and the negative electrode when welding the electrode terminal. Then, electrode terminal plates 202 and 203 are connected to the respective lead wires 204 and 205 with contacts 206, and then the terminal plates 202 and 203 are spot welded to the positive and negative electrode surfaces of the battery body 200. Next, as shown in FIG. 52 (b), the heat shrinkable tube 207 is placed on the battery body 200, and the heat shrinkable tube 207 is heated and shrunk by hot air or radiant heat from the outside to be brought into close contact with the battery body 200. Insulation is aimed at.
[0004]
However, in this structure, since it connects with the connector provided in the circuit board (not shown) via the contact 206 part of the battery main body 200, connection components, such as lead wires 204 and 205 using a vinyl wire, are required. This is disadvantageous in terms of cost.
Furthermore, the present applicant has proposed a “low-pressure, low-temperature insulating coating method for electronic parts” in which an insulating coating layer can be easily formed on a battery in Japanese Patent Application No. 2003-0665528. 53, as shown in FIG. 53, the battery body 200 and the tips 204a and 205a of the lead wires 204 and 205 are directly connected to the respective poles of the battery body 200 by spot welding or the like. A hot melt adhesive layer is formed, and this adhesive layer is used as an insulating coating layer 208. The lead portions (neck portions) 209 of the lead wires 204 and 205 are also integrally covered with the insulating coating layer 208, and the resin coating layer of the lead wires 204 and 205 and the insulating coating layer 208 are fused to each other at the time of molding. Yes.
[0005]
Furthermore, as another battery form, there is a battery having a configuration in which terminals 212 and 213 are spot-welded to the positive electrode surface 210 and the negative electrode surface 211 of the battery main body 200 as shown in FIG. 54. In this case, the surface of the battery main body 200 is If it is not insulated and comes into contact with other electronic components, there is a danger of short circuit. Further, in the case of this battery, since the terminals 212 and 213 are inserted into the circuit board 300 as shown in FIG. 55 and soldering 214 and 215 are performed, the battery cannot be easily replaced.
As another example, instead of connecting and fixing the coin-type battery itself on the circuit board, a holder for holding the battery is mounted on the circuit board, and the battery is electrically inserted by inserting the battery into this holder. Some are configured to be connected. However, in this case, it is necessary to mount the holder on the circuit board in advance, and it is necessary to enlarge the holder to store the battery, which is disadvantageous in terms of downsizing and cost. .
[0006]
[Problems to be solved by the invention]
As described above, the method of covering the coin-type or button-type battery shown in FIG.
1. Electronic terminal plates 202 and 203 must be used to reinforce the spot welded part, which is not only costly but also incomplete in strength.
2. It is necessary to cover the entire periphery of the battery body 200 with the heat-shrinkable tube 201, and it is difficult to position the battery body 200 and the heat-shrinkable tube 201. Therefore, the covering position shifts and the commercial value is lowered.
3. There are two heating steps to process and weld the electrode terminal plates 202 and 203, and to coat the coin-type battery in advance in a donut shape with the heat-shrinkable tube 201 and then cover the whole with the heat-shrinkable tube 207. Productivity is bad.
4). Since it is necessary to interpose the lead wires 204 and 205 between the electrode terminal plates 202 and 203 and the contacts 206, the cost increases in terms of materials and processing.
5. When polyvinyl chloride is used as the material of the heat shrinkable tubes 201 and 207, there is a concern about adverse environmental effects when it becomes waste.
6). In the case of the covering method according to Japanese Patent Application No. 2003-065528, the housings for the lead wires 204 and 205 and the contacts 206 and the man-hours for connecting them by caulking, welding, etc. are required. costly.
There are problems such as.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a contact-attached battery that does not have the disadvantages found in the conventional example, a socket for mounting the battery on a circuit board, and a method for producing the battery. Provides a battery in which the housing function of the contact portion is integrally formed at the same time when the insulating coating layer is formed on the battery body without interposing the lead wire and without the need for the electrode terminal plate or the contact housing. That is.
Next, a second object is to provide a battery that can be easily mounted on a circuit board or the like and can be easily replaced or disposed of separately.
Next, a third object is to provide a socket for easily mounting a battery that has achieved the first and second objects on a circuit board.
Next, a fourth object is to provide a production method capable of efficiently producing a battery that achieves the first and second objects.
[0008]
[Means for Solving the Problems]
In order to achieve the first and second objects described above, in the invention according to claim 1, in the contact-attached battery, the electrode terminal portions of the contacts are connected to the positive electrode surface and the negative electrode surface of the battery body, respectively. A contact terminal portion is formed at the tip of each contact, an insulating coating layer is formed with a hot melt agent on the outside of the battery body and the contact, and the contact terminal portion is a positive contact formed on the insulating coating layer. It is located in the terminal hole and the negative electrode side contact terminal hole.
[0009]
Furthermore, in the invention according to claim 2, in the invention according to claim 1, the outer surface of the insulating coating layer, on the outer side of the terminal portion coating layer where the contact terminal portion is located, has a positive electrode during mounting. It is characterized in that erroneous mounting preventing means is formed so as not to mix up the negative electrode.
[0010]
Furthermore, in the invention according to claim 3, in the invention according to claim 1, a contact terminal portion is provided on the outer surface of the insulating coating layer and outside the terminal portion coating layer where the contact terminal portion is located. Engagement means is formed to prevent the removal when the socket is mounted.
[0011]
Furthermore, the invention according to claim 4 is characterized in that, in claim 1, the insulating coating layer is formed of a hot melt agent.
[0012]
Furthermore, in the invention according to claim 5, in the socket, the lower part and the side part are closed, and the upper part of the socket body which is opened upward is provided with an electrode pin composed of a positive electrode and a negative electrode upward. Protruding, preventing incorrect mounting on the socket side, so that the positive and negative terminal portions are not mismounted due to the cooperative action of the battery-side erroneous mounting prevention means. The socket side engagement means for preventing the battery from being easily detached after the terminal portion on the battery side is once attached by the cooperative action with the engagement means formed on the battery side. It is characterized by.
[0013]
Furthermore, in the invention according to claim 6, in the method for producing a battery with contacts,
a. Punching a contact forming plate composed of an electrode terminal forming portion and a contact terminal forming portion on a metallic conductive plate,
b. In the contact forming plate, the contact terminal forming part is bent to form a contact terminal part having a U-shaped cross section, having a gate in the back part, and having the tip open.
c. A terminal part accommodation boss in which a terminal part accommodation groove into which the contact terminal part can be inserted is formed, and a fixing pin that is inserted into the terminal part from the tip side thereof is provided in the groove of the boss, respectively. And the positional relationship of the said ditch | groove and a fixing pin uses the insulating dummy socket set so that it might face the mutually opposite direction,
d. First of all, after inserting the terminal portion receiving groove of the dummy socket into one terminal portion of the contact forming plate and also inserting the fixing pin into the terminal portion, the contact forming plate is cut from the conductive plate. Disconnect,
e. Next, rotate the dummy socket 180 ° to extrapolate the terminal receiving groove on the other boss to the terminal part of the adjacent contact forming plate, and insert the fixing pin into the terminal part. Cut the forming plate to separate the contact forming plate,
f. Next, the battery main body is sandwiched between the electrode terminal forming portions of the two contact forming plates, and the electrode terminal forming portions are spot welded to the positive and negative electrode surfaces of the battery main body, respectively.
g. Next, the battery body and the dummy socket integrated in the cavity of the mold are fixed using an insulating spacer, the mold is closed, and the hot melt agent is filled in the cavity, so that the outside of the battery body and In the outer side of the contact forming plate and the dummy socket, an insulating coating layer by a hot melt agent is formed on the outer side of the boss.
h. Next, open the mold, take out the battery body and the dummy socket covered with the insulating coating layer from the cavity, and pull out the dummy socket from the contact terminal part on the battery body side. Form a contact terminal hole by and expose the contact terminal part in this terminal hole to make a product,
i. It is characterized by this.
[0014]
Furthermore, in the invention according to claim 7, in claim 6, by forming a convex portion so as to face each other by pressing a part of the upper end edge of the side surface on the front end side of the contact terminal forming portion. When the contact terminal forming part is bent into a U-shape, an engagement part is formed at the U-shaped upper edge of the contact terminal part, and the electrode pin on the socket side is smoothly inserted into the U-shaped contact terminal part In addition, the battery is characterized in that it is devised so that the battery becomes stable when the battery is mounted in the socket.
[0015]
[Action]
The battery is directly attached with a contact having a terminal portion. Further, the battery and the outside of the contact are protected by an insulating coating layer made of a hot melt agent, so that no short circuit occurs. Further, since the contact is directly attached to the battery, the battery can be directly mounted on the socket of the circuit board and can be easily removed from the socket when the battery needs to be replaced or separated.
The battery and the socket are provided with an erroneous attachment preventing means so that the positive electrode and the negative electrode of the battery are not mistakenly attached, so that there is no mistake and the battery does not come loose due to the engaging means.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The battery according to the present invention is used for the purpose of mounting a coin-type or button-type battery on an electronic device such as a personal computer and backing up a memory. The battery and the contact of the battery are a hot melt agent. It is covered with an insulating coating layer.
As a molding die to be used, a general aluminum material used for hot melt agent molding is used, but an insulating material is used for a portion for holding a contact and a fixed guide portion for a battery.
[0017]
The hot-melt agent for forming the insulating coating layer may be a commonly used polyamide-based material. The polyamide which is the main component of the hot melt agent is different from the generally used petroleum-based polyamide for resin molding and has a low crystallization temperature and a low melting temperature of the hot melt agent. Furthermore, since the injection pressure at the time of molding is low, the thermal influence applied to the battery can be kept low. Furthermore, since the pressure at the time of shaping | molding concerning a spot welding part can also be suppressed, it is favorable for formation of an insulation coating layer.
[0018]
[Example 1]
Example 1 is an example of a coin-type battery according to the present invention described in claims 1 to 4, and FIGS. 1 to 3 are before forming an insulating coating layer with a hot melt agent, FIG. 4 to FIG. 7 are explanatory diagrams showing a state where contacts are attached to the positive and negative electrode surfaces of the battery body, and FIGS.
1 to 7, reference numeral 1 denotes a battery, 2 denotes a battery body, 3 denotes a positive electrode surface of the battery body 2, 4 denotes a negative electrode surface, 5 denotes a contact attached to the positive electrode surface 3, and 5a denotes a negative electrode surface 4. The contacts 5, 5a are electrode terminal portions 6, 6a spot-welded to the positive electrode surface 3 and the negative electrode surface 4 of the battery body 2, respectively, and the electrode terminal portions 6, 6a. From the contact terminal portions 7 and 7a projecting from the periphery of the battery body 2 with a gap a formed. As shown in FIG. 34, the contact terminal portions 7 and 7a are formed in a U-shaped cross section with side plates 7b and 7c and a bottom plate 7e, and an electrode pin insertion port 7f on the socket side is formed at the tip side. In addition, convex portions 7g and 7h are formed on the upper edges of the side plates 7b and 7c, and gates 7d and 7d 'are formed on the base portion of the contact terminal portion 7.
As shown in FIGS. 4 to 7, the insulating coating layer 8 made of a hot melt agent completely covers the battery body 2 and the contacts 5, 5 a from the outside. However, as for the terminal parts 7 and 7a, the positive electrode side and the negative electrode side are divided by the hot-melt agent, and only the electrode pin insertion port 7f side is exposed in the electrode pin insertion holes 11 and 12.
Further, a protrusion 13 is formed on the outer surface of the terminal portions 7 and 7a and outside the terminal portion covering layer 10, and these protrusions 13 are connected to a positive electrode and a negative electrode when mounted on a socket 20 described later. This is to avoid confusion.
Further, a step portion 14 is formed on the outer side of the terminal portion covering layer 10, and this step portion 14 functions as a hook for preventing the battery 1 from being detached when the battery 1 is attached to the socket 20.
[0019]
[Example 2]
The second embodiment relates to a socket used when the battery described in the first embodiment is mounted on a circuit board, and corresponds to claim 5.
As shown in FIGS. 8 to 11, the socket 20 is composed of a side plate 23 that surrounds the bottom plate 22, and a bowl-shaped socket body 21 that is open on the upper side. The electrode pin 25 stands upright, the back plate 26 is formed with a claw 27 that engages the step 14 formed on the battery 1 side, and one of the side plates 23 has a protrusion formed on the battery 1 side downward from the upper edge. A slit 28 with which 13 is engaged is formed. Reference numeral 29 denotes a soldering portion for the circuit board 30 side.
FIGS. 12A, 13, and 14 show a state in which the socket 20 is mounted on the circuit board 30 and the battery 1 is mounted on the socket 20. FIG. 12B shows an example in which the socket 1 is laid sideways on the circuit board 30 and the battery 1 is mounted horizontally. 31 and 32 are leads on the positive electrode side and the negative electrode side.
[0020]
[Example 3]
As shown in FIGS. 15 to 18, the third embodiment is an example of the battery 1 in which the terminal portions 7 and 7 a are housed in the periphery of the battery body 2 and the size of the battery 1 is reduced. The contact terminal portions 7 and 7a are formed in a flat sheath shape. FIG. 19 shows the battery 1 in a state in which an insulating coating layer 8 made of a hot melt agent is formed outside the battery body 2 and the contacts 5 and 5a, and only the insertion ports 11 and 12 of the contact terminal portions 7 and 7a are opened. It is.
In FIG. 18, (B) shows a dummy socket for forming the insulating coating layer 8 on the battery 1 of Example 3, which will be described in detail later.
[0021]
[Example 4]
The fourth embodiment is an example of the battery socket shown in the third embodiment. In FIG. 20, the socket 40 projects the positive electrode piece 42 and the negative electrode piece 43 from the bottom plate 41 and positioning ribs. 44 is protruded, the contact terminals 7 and 7a of the battery 1 are mounted on the electrode pieces 42 and 43, respectively, and the battery 1 is mounted on the circuit board 30 as shown in FIG.
[0022]
[Example 5]
Example 5 is an example in which the contact-attached battery 1 can be mounted horizontally on the circuit board 30. FIG. 22 shows a contact-attached battery covered with an insulating coating layer 8 of a hot melt agent. 23 is a side view, FIG. 24 is a perspective view, FIG. 25 is a cross-sectional view taken along the line DD ′, and FIG. 26 is a socket 50 used when the battery 1 of Example 5 is mounted on a circuit board. 27 is a plan view of the socket 50, FIG. 28 is a cross-sectional view taken along the line EE ′ in FIG. 27, and FIGS. 29 to 31 are diagrams illustrating a state where the battery 1 is mounted on the circuit board 30 via the socket 50. FIG.
[0023]
The contacts 5 and 5a used in Example 5 are formed in an L shape. As can be seen from FIG. 25 showing a cross section, the electrode terminals of the contacts 5 and 5a are connected to the positive electrode surface 3 and the negative electrode surface 4 of the battery body 2. When the parts 6 and 6a are connected, the battery body 2 has a shape that is horizontal to the direction of the contact terminal parts 7 and 7a.
In the battery 1 of the fifth embodiment, the insulating coating layer 8 made of a hot melt agent is formed on the outside of the battery main body 2 to which the contacts 5 and 5a are attached and the contacts 5 and 5a as in the first embodiment.
26 to 28 are specific examples of the socket 50 used in the battery 1 of the fifth embodiment. The socket 50 is formed with holder holes 51 and 52 into which the portions of the contacts 5 and 5a covered with the insulating coating layer 8 are inserted, and in each of the holder holes 51 and 52, the contact terminal portion 7, Electrodes 53 and 54 for receiving 7a are provided.
In the fifth embodiment, no means for erroneous insertion is provided, but it is possible to provide erroneous mounting preventing means as in the first embodiment.
FIGS. 29 to 31 are explanatory views showing a state in which the battery 1 of Example 5 is mounted on the circuit board 30 via the socket 50.
[0024]
[Example 6]
Example 6 is a method for manufacturing a battery with contacts corresponding to the inventions described in claims 6 and 7. Hereinafter, it will be described in detail with reference to FIGS.
First, as shown in FIG. 32, a contact plate 101 including electrode terminal formation portions 102 and contact terminal formation portions 103 is formed by punching out conductive plates 100 made of a spring material such as phosphor bronze at the same pitch. To do.
Next, as shown in FIG. 33, the contact forming plate 101 is formed with a cut portion 101a on the contact terminal forming portion 103 side of the contact forming plate 101, and further presses the projections (convex portions) 7g and 7h. Further, in the contact terminal forming portion 103, as shown in FIG. 34, the side plate portions 7b and 7c are erected and the gates 7d and 7d ′ are erected and further bent in the horizontal direction by 90 ° to have a U-shaped contact terminal portion. 7 and 7a are formed.
[0025]
FIG. 35 is a dummy socket used when manufacturing the battery of Example 6. The dummy socket 150 is formed of bosses 152 and 153 having grooves 154 and 155 formed in the front end surface 151a of the main body 151 as shown in FIG. Are projected so that the concave grooves 154 and 155 face in opposite directions, and dummy electrode pins 156 and 157 are provided in front of the concave grooves 154 and 155 of the bosses 152 and 153, respectively. The guide hole 158 is provided in the part.
FIG. 36, FIG. 37, and FIG. 39 show a state immediately before extrapolating the dummy socket 150 configured as described above to the contact terminal portions 7 and 7a.
Next, a process of forming the insulating coating layer 8 by the hot melt agent outside the battery body 2 using an injection mold using the contact forming plate 101 and the dummy socket 150 will be described.
[0026]
As shown in FIGS. 37 and 39, the contact terminal portion 7 of the conductive plate 100 is made to face the boss 152 side of the dummy socket 150, and then the contact terminal portion 7 is coupled into the concave groove 154 of the boss 152. FIG. 38 shows an overall view of the situation at that time, and FIG. 40 shows an enlarged view. First, as shown in FIG. 37 and FIG. 39, the coupling is such that the concave groove 154 of the boss 152 of the dummy socket 150 is set downward, and the concave groove 154 is extrapolated to the contact terminal portion 7 in this state. At this time, dummy electrode pins 156 are simultaneously inserted into the contact terminal portion 7.
Next, as shown in FIGS. 40 and 41, the contact forming plate 101 to which the dummy socket 150 is attached is separated from the conductive plate 100 (by separating from the conductive plate 100, the contact forming plate 101 is connected to the contacts 5, 5a. Next, as shown by an arrow b in FIG. 41, after rotating the dummy socket 150 by 180 °, as shown in FIG. 42, the boss 153 is made to face the contact terminal portion 7a, and further, as shown in FIG. As described above, the groove 155 of the boss 153 and the electrode pin 157 are coupled to the contact terminal portion 7a of the next contact forming plate 101, and then the contact terminal forming plate 101 is separated from the conductive plate 100 as shown in FIG.
[0027]
Next, as shown in FIG. 45, the battery body 2 is sandwiched between the electrode terminal portions 6 and 6a of the contacts 5 and 5a, and the electrode terminal portions 6 and 6a are inserted into the electrode surface of the battery body 2 as shown in FIG. Spot welding is performed on 3 and 4 respectively.
Next, the insulating coating layer 8 is formed using an apparatus comprising a mold 180, a hot melt agent filling unit 185, and a conduit 186 as shown in FIG. First, the mold cavity 181 shown in FIG. 48 will be described. Positioning ribs 182 are provided at key points on the wall surface of the cavity 181 corresponding to the circumferential side of the battery body 2. Note that the positioning rib 182 can be freely selected as to whether it is provided on the other mold. Further, both cavity surfaces corresponding to the positive electrode surface 3 and the negative electrode surface 4 of the battery main body 2 are provided in both molds so that the battery main body 2 is sandwiched between the holding pins 189 when the metal mold 180 is closed. For the holding pin 189, the negative electrode surface 4 uses an insulating material, but the positive electrode surface 3 may be an insulating material or a metal material.
Due to the action of the positioning rib 182 and the holding pin 189, a uniform gap is formed between the battery body 2 and the cavity surface.
In addition, the battery body 2 and the dummy socket 150 are assembled in a mold 180 in which a guide pin 188 to be inserted into the guide hole 158 of the dummy socket 150 is formed, the mold 180 is closed, and the hot melt agent is gated from the sprue 183. Then, the insulating coating layer 8 is formed outside the battery body 2 and the bosses 152 and 153 of the dummy socket 150. When the hot melt agent is injected, the gates 7d and 7d 'of the terminal portions 7 and 7a prevent the hot melt agent from entering the terminal portions 7 and 7a, and the pins 156 and 157 of the dummy socket 150 are connected to the contact terminal portion 7. , 7a is fixed at the injection pressure.
[0028]
Next, as shown in FIG. 49, the mold 180 is opened, and the battery 1 on which the insulating coating layer 8 is formed and the dummy socket 150 are taken out together.
FIG. 50 shows the battery 1 and the dummy socket 150 thus taken out. After the sprue scrap 184 is cut, the dummy socket 150 is pulled out from the battery 1 side as shown in FIG. As a result, the electrode pin insertion holes 11 and 12 are formed in the trace of the bosses 152 and 153 of the dummy socket 150 being removed, and the contact terminal portions 7 and 7a are exposed in the insertion holes 11 and 12. Although the above is the manufacturing method of the battery 1 described in claims 1 to 4, the insulating coating layer 8 can be formed by the same manufacturing method also for the battery 1 described in Examples 3 and 5. At this time, for the battery 1 of Example 3, dummy terminals 151a and 152a and a dummy socket 150a with a guide hole 158a shown in FIG. 18B are used. The battery 1 manufactured by the manufacturing method of Example 6 is the finished product shown in FIGS.
[0029]
【The invention's effect】
As described above, in the battery with contacts of the present invention, the entire battery body and the contacts are integrally covered with the insulating coating layer made of the hot melt agent. Furthermore, since the battery can be mounted on the circuit board using a dedicated socket, the following effects can be obtained.
1. The contact-attached battery of the present invention has an adhesive property, which is an original characteristic of a hot melt agent, so that the electrode terminal portion of the contact is more closely attached to the battery body, thereby further reinforcing the bonding strength between the battery body and the contact. In addition, the entire battery can be insulated (claims 1 to 4).
2. Since the battery with contacts of the present invention also has an outlet function, not only the lead wires and electrode terminals shown in the conventional example are required, but also it can contribute to the miniaturization and weight reduction of the device. . As a result, the processing cost required for configuring these components is unnecessary, and the economic effect is immeasurable (claims 1 to 4).
3. Since the battery with contacts of the present invention is provided with a detachable socket, a battery that cannot be replaced can be easily replaced (claims 1 to 5).
4. The contact-attached battery of the present invention can form a contact with high dimensional accuracy because the contact terminal portion is held by the dummy socket when the insulating coating layer is formed by the hot melt agent using the molding die. (Claim 6).
5, the contact battery of the present invention is easy to form a hole in the terminal portion by providing a gate for preventing the intrusion of hot melt agent in the contact terminal portion. By providing means for preventing erroneous insertion when mounted on the circuit board, the risk of erroneous connection can be prevented (claim 2).
6. The contact-attached battery according to the present invention and the socket used therefor have the means for crossing each other, so that they can be securely joined, and once attached, they will not come loose. (Claim 3)
7. According to the method for producing a battery according to the present invention, a battery with a contact can be produced efficiently and at low cost (claims 6 and 7).
[Brief description of the drawings]
FIG. 1 is a front view of a battery body according to Example 1 as viewed from the negative electrode surface side with a contact attached.
FIG. 2 is a side view of FIG.
3 is a bottom view of FIG. 1. FIG.
FIG. 4 is a front view of a battery formed with an insulating coating layer, as viewed from the negative electrode surface side.
FIG. 5 is a bottom view of FIG. 4;
6 is a perspective view of FIG. 4. FIG.
FIG. 7 is a sectional view taken along line AA ′.
FIG. 8 is a plan view of the socket.
FIG. 9 is a side view of the socket.
FIG. 10 is a perspective view of a socket.
FIG. 11 is a sectional view taken along line BB ′.
FIG. 12A is a perspective view of a state in which a battery is mounted on a socket. (B) is explanatory drawing of the state which mounted the socket and the battery horizontally on the circuit board.
FIG. 13 is a front view of a state in which a battery is attached to the socket.
FIG. 14 is a sectional view taken along line CC ′.
15 is a front view of the battery according to Example 4 before an insulating coating layer is formed. FIG.
16 is a bottom view of FIG. 15. FIG.
17 is a side view of FIG.
FIG. 18A is the battery of FIG. (B) is explanatory drawing of a dummy socket.
19 is a perspective view of the battery of FIG. 15 having an insulating coating layer formed thereon.
20 is an explanatory diagram of the battery socket of FIG. 15;
21 is an explanatory view showing a state in which the battery of FIG. 15 is attached to the socket of FIG.
22 is an explanatory diagram of a battery of Example 5. FIG.
23 is an explanatory diagram of the battery of FIG.
24 is a perspective view of the battery of FIG.
FIG. 25 is a sectional view taken along line DD ′.
26 is an explanatory diagram of the battery socket of FIG. 22;
27 is a plan view of the socket of FIG. 26. FIG.
FIG. 28 is a sectional view taken along line EE ′.
29 is an explanatory diagram of a state in which the battery of FIG. 22 is mounted on the socket of FIG. 26 and mounted on a circuit board.
30 is a side view of FIG. 29. FIG.
FIG. 31 is a sectional view taken along line FF ′.
FIG. 32 is an explanatory diagram of a contact terminal forming plate.
FIG. 33 is an explanatory diagram of a contact terminal forming portion.
FIG. 34 is an explanatory diagram of a terminal portion.
FIG. 35 is an explanatory diagram of a dummy socket.
FIG. 36 is an explanatory diagram immediately before a dummy socket is coupled to a terminal portion.
FIG. 37 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 38 is an explanatory view of a method for producing a battery with contacts according to the present invention.
FIG. 39 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 40 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 41 is an explanatory view of a method for producing a battery with contacts according to the present invention.
FIG. 42 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 43 is an explanatory view of a method for producing a battery with contacts according to the present invention.
44 is an explanatory view of a method for producing a battery with contacts according to the present invention. FIG.
FIG. 45 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 46 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
47 is an explanatory view of a method for producing a battery with contact according to the present invention. FIG.
FIG. 48 is an explanatory view of a method for producing a battery with contacts according to the present invention.
FIG. 49 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 50 is an explanatory diagram of a method for producing a battery with contacts according to the present invention.
FIG. 51 is an explanatory diagram of a method for producing a battery with contacts according to the present invention. .
52 (a) and 52 (b) are explanatory views of a conventional battery with lead wires.
FIG. 53 is an explanatory view of a conventional battery with lead wires.
FIG. 54 is an explanatory diagram of a conventional battery with a terminal.
FIG. 55 is an explanatory diagram of a state in which a conventional battery with a terminal is mounted on a circuit board.
[Explanation of symbols]
1 battery
2 Battery body
5, 5a contact
6, 6a Electrode terminal
7, 7a Contact terminal
8 Insulation coating layer
9 Battery body coating layer
10 Terminal coating layer
13 Protrusion
14 steps
20 sockets
23 Slit
25 nails
30 Circuit board
100 conductive plate
101 Contact forming plate
102 Electrode terminal forming part
103 Contact terminal forming part
150 dummy socket

Claims

The electrode terminal portions of the contacts are connected to the positive electrode surface and the negative electrode surface of the battery body, respectively, and the contact terminal portions are formed at the tips of the contacts, respectively, and the battery body and the contacts are insulated with a hot melt agent. A contact-attached battery in which a layer is formed and the contact terminal portion is positioned in a positive electrode side contact terminal hole and a negative electrode side contact terminal hole formed in the insulating coating layer.

2. The improper mounting preventing means for preventing the positive electrode and the negative electrode from being mixed at the time of mounting on the outer surface of the insulating coating layer and outside the terminal portion coating layer where the contact terminal portion is located. A battery with contacts, characterized in that

2. The hooking means for preventing the contact terminal portion from coming off when the contact terminal portion is attached to the socket, on the outer surface of the insulating coating layer and outside the terminal portion coating layer where the contact terminal portion is located. A battery with contacts, characterized in that

The contact-attached battery according to claim 1, wherein the insulating coating layer is formed of a hot melt agent.

The lower part of the socket main body, which is closed at the lower part and the side part and opened upward, is provided with electrode pins made up of a positive electrode and a negative electrode upward, respectively. Forming a socket-side erroneous mounting preventing means for preventing mis-mounting of the terminal portions of the positive electrode and the negative electrode due to a cooperative action with the erroneous mounting preventing means on the side, and a hooking means formed on the battery side; A socket characterized in that socket side engagement means for preventing the battery from being easily detached after the battery side terminal portion is once mounted by the synergistic action.

a. Punching a contact forming plate composed of an electrode terminal forming portion and a contact terminal forming portion on a metallic conductive plate,
b. In the contact forming plate, the contact terminal forming portion is bent to form a contact terminal portion having a U-shaped cross section, having a gate in the back portion, and having the tip open.
c. A terminal part accommodation boss in which a terminal part accommodation groove into which the contact terminal part can be inserted is formed, and a fixing pin that is inserted into the terminal part from the tip side thereof is provided in the groove of the boss, respectively. And the positional relationship of the said ditch | groove and a fixing pin uses the insulating dummy socket set so that it might face the mutually opposite direction,
d. First of all, after inserting the terminal portion receiving groove of the dummy socket into one terminal portion of the contact forming plate and also inserting the fixing pin into the terminal portion, the contact forming plate is cut from the conductive plate. Disconnect,
e. Next, rotate the dummy socket 180 ° to extrapolate the terminal receiving groove on the other boss to the terminal part of the adjacent contact forming plate, and insert the fixing pin into the terminal part. Cut the forming plate to separate the contact forming plate,
f. Next, the battery main body is sandwiched between the electrode terminal forming portions of the two contact forming plates, and the electrode terminal forming portions are spot welded to the positive and negative electrode surfaces of the battery main body, respectively.
g. Next, the battery body and the dummy socket integrated in the cavity of the mold are fixed using an insulating spacer, the mold is closed, and the hot melt agent is filled in the cavity, so that the outside of the battery body and In the outer side of the contact forming plate and the dummy socket, an insulating coating layer by a hot melt agent is formed on the outer side of the boss.
h. Next, open the mold, take out the battery body and the dummy socket covered with the insulating coating layer from the cavity, and pull out the dummy socket from the contact terminal part on the battery body side. Form a contact terminal hole by and expose the contact terminal part in this terminal hole to make a product,
i. A method for producing a battery with a contact covered with an insulating coating layer by a hot melt agent.

7. The contact terminal forming portion is bent into a U-shape by pressing a part of the upper edge of the side surface on the front end side of the contact terminal forming portion inward to form a convex portion so as to face each other. When an engagement part is formed at the U-shaped upper edge of the contact terminal part, the electrode pin on the socket side is smoothly inserted into the U-shaped contact terminal part, and the battery is mounted in the socket. A method for producing a battery with a contact covered with an insulating coating layer by a hot melt agent, characterized in that the battery is devised to be stable.