JP2004039346A

JP2004039346A - Battery holder

Info

Publication number: JP2004039346A
Application number: JP2002192554A
Authority: JP
Inventors: Yuichi Akita; 穐田　裕一
Original assignee: Yazaki Corp; Japan Chain Terminal Co Ltd
Current assignee: Yazaki Corp; Japan Chain Terminal Co Ltd
Priority date: 2002-07-01
Filing date: 2002-07-01
Publication date: 2004-02-05

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cost and a weight. <P>SOLUTION: A battery storage part 10 for storing a button type battery 2 is formed of a bottom plate 7, and two peripheral walls 8 and 9 provided opposed to the bottom plate 7, so as to form a minus electrode in a bottom plate side. Protruded pieces 25 and 25 contacting with a circular surface in a plus electrode side of the battery 2 are provided in the one side peripheral wall 9 to prevent the stored battery 2 from being separated. A plus terminal 5 contacting with a plus electrode of the battery 2 is attached to the other peripheral wall 8. The plus terminal 5 has an elastic terminal part 33 deformed elastically to store the battery 2 located in a portion opposed to a contacting portion into the battery storage part 10 beyond over the protruded pieces 25 and 25, when the battery 2 is brought into contact from an upper side of the one side peripheral wall 9 along a diagonal direction, and a contact piece 34 contacting with the circular surface in the plus electrode side of the battery 2 to prevent the stored battery 2 from being separated. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、ボタン電池を収容する電池ホルダに関するものである。
【０００２】
【従来の技術】
ボタン電池は、ＰＣ（パーソナルコンピュータ）、ゲーム機、ＡＶ機器等の配線基板にメモリをバックアップするために用いられている。ボタン電池は、配線基板に固着されている電池ホルダに着脱自在に収容されている。
電池ホルダとしては、既にいろいろなものが提案されており、例えば、ほぼ円形状の底板の周縁部に円筒形の周壁を設けて、円盤状のボタン電池を内側に収容できるホルダ本体（ほぼ有底円筒状のホルダ本体）と、そのホルダ本体に取り付けられた２つの端子とからなる。そのホルダ本体内にボタン電池を嵌め込んで収容させると、ボタン電池は周壁に設けられた抜出防止部によってホルダ本体から簡単に抜けないように収容されると共に、プラス端子がボタン電池のプラス極に、マイナス端子がボタン電池のプラス極にそれぞれ電気的に接続されるようになっている。
【０００３】
しかしながら、前記電池ホルダは、ボタン電池を簡単には抜けないように保持することができるが、ホルダ本体は強度を考慮すると全体的に厚いものとなってしまう。ボタン電池は、例えば、ＰＣ等の大量生産される配線基板等にバックアップ電源として用いられるため、ボタン電池を収容する電池ホルダも大量に生産される。このため、近年の低コスト化及び配線基板の軽量化を図る上ではできるだけ、電池ホルダの低コスト化及び軽量化も図りたい。
【０００４】
【発明が解決しようとする課題】
そこで、本発明は、このような実状に鑑みなされたものであり、その目的は、低コスト化及び軽量化を図ることができる電池ホルダを提供することにある。
【０００５】
【課題を解決するための手段】
前記目的を達成するために、本発明の電池ホルダは、底板とその底板に設けられた周壁とからなる電池収容部に、マイナス極が底板側になるようにボタン電池を収容させ、プラス端子がボタン電池のプラス極に、マイナス端子がマイナス極にそれぞれ電気的に接続される電池ホルダにおいて、前記周壁が、前記プラス端子及びマイナス端子がそれぞれ個別に取り付けられる対向する２つの周壁からなり、該マイナス端子が取り付けられる周壁に、収容したボタン電池の離脱を防止すべくボタン電池のプラス極側円形表面に接触する突出片を設け、前記プラス端子が、ボタン電池をマイナス端子６が取り付けられる周壁上から斜め方向に接触させたとき、この接触箇所と対向する箇所のボタン電池が前記突出片を越えて電池収容部内に収容されるべく弾性変形する弾性端子部と、収容されたボタン電池の離脱を防止すべくその電池のプラス側円形表面に接触する接触片とを有するものである（請求項１）。
【０００６】
このように構成することで、ボタン電池をマイナスが底板側にしてマイナス端子が取り付けられる周壁（第２周壁）上から斜め方向に電池収容部内へと挿入すると、プラス端子の弾性端子部に接触して弾性端子部が付勢力に抗して弾性変形し、この接触箇所と対向する箇所のボタン電池が他方の周壁の突出片を越えて、電池収容部内に入る。この電池収容部内に入ったボタン電池は、弾性端子部の付勢力（復元力）により第２周壁に押圧され、第２周壁の突出片及びプラス端子の接触片により電池収容部からの離脱が防止された状態でボタン電池が収容される。
従って、周壁は、底板の全体に設ける必要は無いと共に、プラス端がボタン電池を電池収容部に収容（係止）させるために寄与し、ボタン電池を係止するための部材を少なくすることができるので、低コスト化及び軽量化を図ることができる。
【０００７】
前記底板に、前記一方の周壁の近傍又は両方の周壁の近傍をそれぞれ切り欠いた切欠部を設けると共に、両方の周壁の近傍をそれぞれ切り欠いたとき、切欠部間の底板の厚さを他の底板の厚さより薄くすることが好ましい（請求項２）。
このように、底板に切欠部を設けると共に切欠部間の底板を薄くすることにより、より軽量化を図れると共に、底板は周壁が対向する方向に沿って撓み（可撓し）易くなっているので、ボタン電池の電池収容部への挿入を容易に行えることなる。
【０００８】
前記底板の前記周壁が設けられている箇所の近傍に、前記ボタン電池の逆向きの挿入を防止する段部を設けることが好ましい（請求項３）。
これにより、ボタン電池が電池収容部へ逆向きに挿入されても段部が設けられているので、その挿入が行えず、ボタン電池が逆向きに（プラス極とマイナス極が反対の状態で）収容されることがなくなる。
【０００９】
前記プラス端子が、細長のほぼ矩形状の金属片を、前記一方の周壁に取り付けられるべくほぼコ字状に折り曲げて形成される取付部と、その取付部を形成する金属片の一部に設けられ、前記一方の周壁と係合して取付部を係止する係止部と、前記取付部より電池収容部側となる金属片をほぼＵ字状に折り曲げて形成される弾性端子部と、その弾性端子部より電池収容部側となる金属片を折り曲げて形成される接触片とを有することが好ましい（請求項４）。
【００１０】
このように、プラス端子が細長のほぼ矩形状の金属片を折り曲げて形成されているため、１枚の金属板から多数のプラス端子を製造する場合には、無駄になる部分が少ないので、大量生産には特に適し、プラス端子の生産コストを可及的に低減することができる。
【００１１】
前記マイナス端子が、細長のほぼ矩形状の金属片を、前記他方の周壁に折曲先端部が前記底板側に位置されて取り付けられるべくほぼコ字状に折り曲げて形成される取付部と、その取付部を形成する金属片の一部に設けられ、前記他方の周壁と係合して取付部を係止する係止部と、前記取付部より電池収容部側となる金属片を、その取付部を他方の周壁に取り付けたとき、電池収容部に収容されたボタン電池のマイナス極側円形表面に接触すべく底板に対して傾斜して折り曲げて形成される接触端子部とを有することが好ましい（請求項５）。
【００１２】
このように、マイナス端子が細長のほぼ矩形状の金属片を折り曲げて形成されているため、１枚の金属板から多数のマイナス端子を製造する場合には、無駄になる部分が少ないので、大量生産には特に適し、マイナス端子の生産コストを可及的に低減することができる。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態を添付図面に基づいて詳述する。
図１乃至図３は本発明の電池ホルダの一例を示めした図である。図１乃至図３において、１は円盤状のボタン電池２を収容する電池ホルダを示す。
ボタン電池２は、市販されている円盤状に形成されているものである。ボタン電池２の円形面の一面がプラス極に、他の面がマイナス極として形成されている。プラス極の円形面はマイナス極の円形面より径が大きく形成され、このマイナス極の周縁部にはプラス極とマイナス極とを仕切る段差３が設けられている。つまり、ボタン電池２は、マイナス極側の円形面と周面（側面）とが連接されてプラス極として形成されている。
【００１４】
電池ホルダ１は、ボタン電池２を収容するホルダ本体４と、ホルダ本体４に取付けられ、収容されたボタン電池２のプラス極に電気的に接続されるプラス端子５と、ホルダ本体４に取付けられ、収容されたボタン電池２のマイナス極に電気的に接続されるマイナス端子６とからなる。
【００１５】
ホルダ本体４は、底板７と、その底板７の対向する２箇所に設けられる２つの周壁８、９とから一体的に絶縁材料例えば合成樹脂により成形され、その底板７と周壁８、９とにより電池収容部１０が形成される。
【００１６】
底板７は、少なくともボタン電池２の直径より長い長い部分があればどのような形状に形成してもよく、例えば、ボタン電池２の径より大径の円形平板状に形成されている。
底板７の周壁間８、９の一方の周壁８の近傍又は両方の周壁９の近傍、図示例では両方の周壁８、９の近傍には切欠部１１がそれぞれ設けられている。切欠部１１の形状は、特に限定されず、図示するようにほぼ矩形状でもよく、また円形状、矩形状、多角形状どのような形状に形成してもよい。
底板７の切欠部１１、１１間の厚さは、他の底板７の厚さより薄く形成することが好ましい。
【００１７】
２つの周壁８、９は、円形の底板７の周縁部の対向す２箇所にその平面に対してほぼ直交する方向に沿って一体的にそれぞれ設けられている。これら周壁８、９は、外周が底板７の周縁部の径とほぼ同径で、内周がボタン電池２（プラス極側の円形面）の外径より小径の円弧状にそれぞれ形成されている。これら周壁の一方は、その周方向の長さが比較的長い第１周壁８として、他方は第１周壁８より周方向の長さが短い第２周壁９として形成されている。これら第１周壁８と第２周壁９とは、厚さがほぼ同じで同一の軸を中心とした円周上に配設されている。第１、第２周壁８、９の高さは、底板７からボタン電池２の厚さよりやや高く形成されている。
【００１８】
また、第１周壁８と第２周壁９とが設けられている底板７の周縁部には、ボタン電池２の電池収容部１０への逆向き（プラス面が底板７側になる向き）の挿入を防止する段部１２がそれぞれ一体的に設けられている。
段部１２は、マイナス面の周縁部の段差３を利用してボタン電池２の逆向きの挿入を防止するものであり、ボタン電池２のマイナス極の円形面の周縁部の形状に嵌合するように形成されている。つまり、段部１２は、ボタン電池２の円形面の周縁部がプラス極の場合には平面状に形成され、マイナス極の場合には段差３が設けられているので、その段差３に嵌合するように形成されている。
【００１９】
第１周壁８の周方向のほぼ中央部には、第１端子装着部１３が一体的に設けられていると共に、第２周壁９の周方向のほぼ中央部には、第２端子装着部１４が一体的に設けられている。
第１端子装着部１３は、一対の脚部１５、１６と、それら脚部１５、１６間を連結すると共にプラス端子５が取り付けられる端子取付部１７とからなる。
【００２０】
一対の脚部１５、１６は、第１周壁８の中央部から周方向にそれぞれ所定の距離離間した底板７の周縁部の２箇所に、第１、第２周壁８、９の対向方向に沿ってほぼ平行に延在する板状にそれぞれ形成されている。これら脚部８、９の互いに対向する内面の底板９の周縁部上より少し径方向外方には、その径方向に対してほぼ直交する方向に沿って延在する端子取付部１７が一体的に設けられている。
【００２１】
端子取付部１７は、ほぼ矩形平板状に形成され、電池収容部１０側の表面（第１面）１７ａが底板７の外周の円周上より径方向外方に位置されている。
端子取付部１７の底板７側の底板７とほぼ平行な面（下面）は、底板７の裏面の近傍の箇所に位置されていると共に、下面と対向する面（上面）は、底板７側の端部からほぼボタン電池２の厚さ離間した箇所（第１周壁８の延出端部（底板７とは反対側の端部）より底板７側に所定の距離離間した箇所）に位置されている。
【００２２】
端子取付部１７の第１面１７ａには、上面側の端部の近傍から下面側の端部までに係合部である断面ほぼ凹状の凹溝１８が設けられている。
端子取付部１７の反対の面（第２面）１７ｂには、下面側の端部の近傍から上面の端部にかけて漸次傾斜した傾斜面１９が設けられている。
【００２３】
第２端子装着部１４は、第１端子装着部１３と同様に、一対の脚部２０、２１と、それら脚部２０、２１間を連結すると共にマイナス端子６が取り付けられる端子取付部２２とからなる。
一対の脚部２０、２１は、第２周壁９の中央部から周方向にそれぞれ所定の距離離間した底板７の周縁部の２箇所に、第１、第２周壁８、９の対向方向に沿ってほぼ平行に延在する板状にそれぞれ形成されている。これら脚部２０、２１の互いに対向する内面の底板７の周縁部上より少し径方向外方には、その径方向に対してほぼ直交する方向に沿って延在する端子取付部２２が一体的に設けられている。
【００２４】
端子取付部２２は、ほぼ矩形平板状に形成され、電池収容部１０側の表面（第１面）２２ａが底板７の外周の円周上より径方向外方に位置されている。
端子取付部２２の底板７側の底板７とほぼ平行な面（下面）は、底板７の裏面の近傍の箇所に位置されていると共に、下面と対向する面（上面）は、底板７側の端部からほぼボタン電池２の厚さ離間した箇所（第２周壁９の延出端部（底板７とは反対側の端部）より底板７側に所定の距離離間した箇所）に位置されている。
端子取付部２２の両面２２ａ、２２ｂには、下面側の端部の近傍から上面の端部にかけて漸次傾斜した傾斜面２３、２４がそれぞれ設けられている。
【００２５】
この第２端子装着部１４に連設する第２周壁９の延出端部には、第１周壁方向に沿って底板７とほぼ平行に延在する突出片２５、２５が設けられている。突出片２５、２５は、電池収容部１０に収容したボタン電池２の離脱を防止すべくボタン電池２のプラス極側円形表面に接触するものである。突出片２５、２５の突出端部は、その突出端部と対向する第１周壁８との間の長さがボタン電池２（プラス極側円形面）の直径より若干長くなるような位置に配設されている。
【００２６】
このように、ホルダ本体４は、底板７と、その底板７の対向する箇所に設けられ、第１、第２端子装着部１３、１４を有する第１、第２周壁８、９とからなるが、図４に示すように、ボタン電池２の収容に寄与していない部分、例えば、第１、第２周壁８、９の両端部を直線で結んだ直線上から周壁８、９とは反対側（周壁８、９が設けられていない側）の部分を切り欠いたようなほぼ矩形状にホルダ本体２６を形成するようにしてもよい。
【００２７】
プラス端子５は、図１及び図５に示すように、細長のほぼ矩形状の例えば金属片３０を折り曲げて形成されている。
すなわち、プラス端子５は、具体的には例えば、金属片３０を、配線基板に半田付けにより固着される固着部３５からほぼ直交する方向に沿って折り曲げる。この第１折曲部３６ａから第１端子装着部１３の端子取付部１７の長手方向の長さ（上面と下面との間の長さ）より若干長い長さ離間した位置で固着部３５側とは反対側にほぼ直交する方向に沿って折り曲げ、さらにその第２折曲部３６ｂから端子取付部１７の厚さより若干厚い長さ離間した位置で折り返すようにほぼ直交する方向に沿って折り曲げる。すなわち、金属片３０は、固着部３５からほぼコ字状に折り曲げられ、このコ字状に折り曲げられた部分が第１端子装着部１３の端子取付部１７に取り付けられる取付部３１として形成される。
【００２８】
さらに第３折曲部からほぼＵ字状に金属片３０を折り曲げる。Ｕ字状の底部は固着部３５の近傍に位置されると共に、その底部から先端部間での長さが基端部（第３折曲部３６ｃ）までの長さより長い位置に位置されている。この位置は、プラス端子５を第１端子装着部１３の端子取付部１７に取り付けて、電池収容部１０にボタン電池２を収容したとき、ボタン電池２のプラス極側の円形面より若干高い位置である。このＵ字状に折り曲げられた部分が弾性端子部３３であり、一種の板ばねとして構成されている。
【００２９】
さらに、金属片３０を、Ｕ字状の先端部からＵ字状の部分とは反対側に、固着部３５と平行する面より弾性端子部３３側に傾斜するように折り曲げて、ボタン電池２のプラス極側の円形面に接触する接触端子部である接触片３４として形成され、これにより、プラス端子５が形成される。
【００３０】
また、金属片３０の第１折曲部３６ａの中央部には、金属片３０の長手方向であって第２折曲部３９ｂ方向に沿ってコ字状に延在する切り込みが設けられている。この切り込みにより形成された部分が固着部３５と同一平面状に配設されて、係止部３２であるコ字状の第１係止片３７が形成されていおり、プラス端子５を第１端子装着部１３の端子取付部１７に取り付けたとき、第１係止片３７が端子取付部１７の下面に面接触（係合）してプラス端子５が係止されるようになっている。
【００３１】
また、取付部３１と弾性端子部３３との２つを兼ねる弾性端子部３３の基端部側の金属片３０の基端部の近傍のほぼ中央部には、基端部方向に向ってコ字状に延在する切り込みが設けられている。この切り込みにより形成された部分が取付部３１内へと好ましくは２５〜３５°特に好ましくは３０°傾斜するように折り曲げられて、係止部３２である第２係止片３８が形成されており、プラス端子５を第１端子装着部１３の端子取付部１７に取り付けたとき、第２係止片３８が端子取付部１７の第１面１７ａの凹溝１８に係合してプラス端子５が係止されるようになっている。
【００３２】
また、弾性端子部３３のボタン電池２の周面が接触する箇所つまり先端部側の金属片３０の両側部又は両側部の近傍に、弾性端子部３３内とは反対側に突出した接触部３９、３９をそれぞれ設けることが好ましい。接触部３９は、どのように形成してもよく、また、その形状も特に限定されず、例えば、図示するように両側部に設ける場合には、半円形状に突出させてもよい。また、接触部３９は、両側部の近傍に設ける場合には、図７に示すように、平面部５１を設けてその平面部５１の両側部の近傍に円形状の突出部により形成してもよい。
【００３３】
また、プラス端子５の固着部３５は、配線基板に半田付けにより固着されるように取付部に対してほぼ直交する方向に沿って形成したが、配線基板の溝や貫通孔に挿入する場合には、図６に示すように、固着部３５が連設されている取付部の面とほぼ平行に沿って延在するようにコ字状の連結部５０を介して形成するようにしてもよい。
また、接触片３４は平板状に形成してもよいが、接触片３４の先端部をボタン電池２のプラス極側円形表面とは反対側に湾曲又は屈曲させてもよい。例えば、図７に示すように、先端部近傍を接触片の折り曲げ方向とは反対側に例えばＲに折り曲げることが好ましい。
【００３４】
マイナス端子６は、プラス端子６と同様に細長のほぼ矩形状の例えば金属片４０を折り曲げて形成されている。
すなわち、マイナス端子６は、具体的には例えば、図１及び図８に示すように、金属片４０を、配線基板に半田付けにより固着される固着部４４からほぼ直交する方向に沿って折り曲げる。この第１折曲部４５ａから第２端装着部１４の端子取付部２２の長手方向の長さ（上面と下面との間の長さ）より若干長い長さ離間した位置で固着部４４側とは反対側にほぼ直交する方向に沿って折り曲げ、さらにその第２折曲部４５ｂから端子取付部２２の厚さより若干厚い長さ離間した位置で折り返すようにほぼ直交する方向に沿って折り曲げる。すなわち、金属片４０は、固着部４４からほぼコ字状に折り曲げられ、このコ字状に折り曲げられた部分が第２端子装着部１４の端子取付部２２に取り付けられる取付部４１として形成される。
【００３５】
さらに、金属片４０を、第３折曲部４５ｃから第２端子装着部１４の端子取付部２２の長手方向の長さ（上面と下面との間の長さ）より若干長い長さ離間した位置で固着部４４側とは反対側にほぼ直交する方向に沿って折り曲げる。さらにその第４折曲部４５ｄから所定の距離離間した位置で取付部４１側に傾斜するように折り曲げて、ボタン電池２のマイナス極の円形面に接触する接触端子部４３として形成し、これにより、マイナス端子６が形成される。
接触端子部４３の傾斜角度は、ボタン電池２のマイナス極の円形面に確実に接触するならば任意に決められ、例えば１５°〜２０°であることが好ましく、特に１８°であることが好ましい。
【００３６】
接触端子部４３の先端部は、傾斜方向とは反対側に湾曲又は屈曲させてもよい。例えば、先端部近傍を接触片の折り曲げ方向とは反対側に例えばＲに折り曲げることが好ましい。
また、接触端子部４３の幅方向のほぼ中央部には、基部（傾斜折曲部４５ｅ）の近傍から先端部にかけてスリット４６を設けて、２つの接触端子片４７、４７を構成し、これら２つの接触端子片４７、４７によりボタン電池２のマイナス極の円形面に接触するようにすることが好ましい。
【００３７】
また、金属片４０の第１折曲部４５ａの中央部には、金属片４０の長手方向であって第２折曲部４５ｂ方向に沿ってコ字状に延在する切り込みが設けられ、この切り込みにより形成された部分が固着部４４と同一平面状に配設されて、係止部４２であるコ字状の第１係止片４８が形成されている。
また、金属片４０の第４折曲部４５ｄの中央部には、第３折曲部４５ｃに向ってコ字状に延在する切り込みが設けられ、この切込みにより形成された部分が固着部４４と同一平面状に配設されて、係止部４２であるコ字状の第２係止片４９が形成されている。
これら第１、第２係止片４８、４９は、マイナス端子６を第２端子装着部１４の端子取付部２２に取り付けたとき、端子取付部２２の下面にそれぞれ面接触（係合）してマイナス端子６が係止されるようになっている。
【００３８】
なお、接触端子部４３は、第４折曲部４５ｄから所定の距離離間した位置で傾斜させて形成するが、第４折曲部４５ｄで例えば１５°〜２０°傾斜するように折り曲げて形成するようにしてもよい。
また、このマイナス端子６の固着部は、配線基板に半田付けにより固着されるように取付部４１に対してほぼ直交する方向に沿って形成したが、配線基板の溝や貫通孔に挿入する場合には、図９に示すように、固着部４４が連設されている取付部の面とほぼ平行に沿って延在するようにコ字状の連結部５０を介して形成するようにしてもよい。
【００３９】
さて、この電池ホルダ１は、図１乃至図３に示すように、ホルダ本体４の第１周壁８の第１端子装着部１３にプラス端子５を取り付けると共に、第２周壁９の第２端子装着部１４にマイナス端子６を取り付けてなる。
プラス端子５の取付は、具体的には、固着部３５がホルダ本体４の外側になるようにプラス端子５のほぼコ字状の取付部３１の開口部と第１端子装着部１３の端子取付部１７の上端部とをつき合わせて、プラス端子５の取付部３１を端子取付部１７に被せるように移動させ、取付部３１の第２折曲部３６ｂと第３折曲部３６ｃとの間の端子５が端子取付部１７の上端部に接触すると、第１係止片３７が端子取付部１７の下面に面接触（係合）すると共に、第２係止片３８が端子取付部１７の第１面１７ａの凹溝１８と係合し、プラス端子５がホルダ本体４に係止される。
【００４０】
このとき、端子取付部１７の第２面１７ｂには傾斜面１９が設けられているので、第１係止片３７が取付部３１内に延在していても、容易にプラス端子５を第１端子装着部１３の端子取付部１７に取り付けることができる。
また、係止部３２である第１、第２係止片３７、３８は、端子５の長手方向に沿って延在するコ字状の切り込みによって形成されているため、簡単な形状で確実にプラス端子５の係止を行える。
【００４１】
マイナス端子６の取付は、具体的には、固着部４４がホルダ本体４の外側になるようにマイナス端子６のほぼコ字状の取付部４１の開口部と第２端子装着部１４の端子取付部２２の上端部とをつき合わせて、取付部４１を端子取付部２２に被せるように移動させ、取付部４１の第２折曲部４５ｂと第３折曲部４５ｃとの間の端子６が端子取付部２２の上端部に接触すると、第１、第２係止片４８、４９が端子取付部２２の下面にそれぞれ面接触（係合）し、マイナス端子６がホルダ本体４に係止される。
【００４２】
このとき、端子取付部２２の両面には傾斜面２３、２４がそれぞれ設けられているので、第１、第２係止片４８、４９が取付部４１内にそれぞれ延在していても、容易にマイナス端子６を第２端子装着部１４の端子取付部２２に取り付けることができる。
また、係止部４２である第１、第２係止片４６、４９は、端子６の長手方向に沿って延在するコ字状の切り込みによって形成されているため、簡単な形状で確実にマイナス端子６の係止を行える。
【００４３】
このように得られた電池ホルダ１にボタン電池２を収容させるには、ボタン電池２をマイナス極側の円形面が底板７側になるようにして、ボタン電池２の周面をプラス端子５の弾性端子部３３に接触させる。このとき、弾性端子部３３と接触している周面と対向する周面側のボタン電池２は第２周壁９上に位置される。つまりボタン電池２は電池収容部１０（底板７）に対して傾斜した状態である。
【００４４】
このボタン電池２の第２周壁９上にある部分をプラス端子５側に押す（スライドさせる）と、ボタン電池２の周面と接触している弾性端子部３３がその押圧力によって付勢力にこうして弾性変形してボタン電池２がプラス端子５方向に移動（スライド移動）し、この接触箇所と対向する箇所のボタン電池２が第２周壁９の突出片２５、２５を越えることにより、ボタン電池２が電池収容部１０内に入る。
【００４５】
このとき、底板７の周壁８、９が設けられている箇所の近傍には段部１２が設けられているため、ボタン電池２が電池収容部１０へ逆向きに挿入されても段部１２によってその挿入が行えないようになっているので、ボタン電池が逆向きに収容されることがない。
【００４６】
電池収容部１０内に入ったボタン電池２は、弾性端子部３３の付勢力（復元力）により第２周壁９方向に押圧されて移動して第２周壁９に当接すると共に、突出片２５、２５がボタン電池２のプラス極側の円形面に接触する。また、この突出片２５、２５が接触した箇所と対向する円形面にはプラス端子５の接触片３４が接触しているので、ボタン電池２は電池収容部１０内に嵌め込まれて電池収容部１０からの離脱が防止された状態で収容されることになる。
【００４７】
このように、電池収容部１０に収容されたボタン電池２の周面にプラス端子５の弾性端子部３３が接触すると共に、プラス極側の円形面に接触片３４が接触するので、ボタン電池２のプラス極とプラス端子５とが電気的に接続された状態となる。
また、ボタン電池２が電池収容部１０内に入ったとき、底板７近傍から電池収容部１０内にマイナス端子６の接触端子部３３が傾斜されているので、マイナス極側の円形面が接触端子部３３を押圧した状態で接触するので、ボタン電池２のマイナス極とマイナス端子６とが電気的に接続された状態となる。
【００４８】
したがって、本発明の電池ホルダ１は、周壁を底板の全体に設ける必要は無く、プラス端子、マイナス端子５、６を取り付ける部分及び突出片２５、２５を設ける部分のみがあればよい。また、プラス端子５の弾性端子部３３の付勢力によって電池収容部１０に収容されたボタン電池２が第２周壁９に押圧されるため、プラス端子５がボタン電池２を電池収容部１０に収容（係止）させるために寄与しているので、ボタン電池２を係止するための部材を少なくすることができる。その結果、本発明の電池ホルダ１は低コスト化及び軽量化を図ることができるものである。
【００４９】
また、図４に示すように、ホルダ本体２６を、ボタン電池２の収容に寄与していない部分、例えば、第１、第２周壁８、９の両端部を直線で結んだ直線上から周壁８、９とは反対側（周壁８、９が設けられていない側）の部分を切り欠いたようなほぼ矩形状に形成することにより、より軽量化及び低コスト化を図れる。
【００５０】
また、底板７に図１に示すように切欠部１１、１１を設けると共に切欠部１１、１１間の底板７を他の底板７より薄く形成することにより、より軽量化を図れる。また、ホルダ本体は、底板７に切欠部１１、１１を設けると共に切欠部１１、１１間の底板７を他の底板７より薄く形成することにより、底板７は周壁が対向する方向に沿って撓み（可撓し）易くなっているので、ボタン電池の電池収容部への挿入を容易に行えることなる。すなわち、底板７が例えばほとんど可撓しない場合には、ボタン電池２を電池収容部１０に挿入するとき、底板７がほとんど可撓しないので、ボタン電池２のみを移動させなければならず挿入し難い。これに対して、底板７が、ボタン電池２を電池収容部１０に挿入するとき、周壁が対向する方向に沿って可撓して例えば湾曲する、つまり、ボタン電池の移動方向に追従して可撓するので、ボタン電池２を挿入し易い。
【００５１】
また、プラス端子５及びマイナス端子６は、図１、図５乃至図９に示すように、いずれも細長のほぼ矩形状の金属片３０、４０を折り曲げて形成されているため、１枚の金属板からプラス端子５及びマイナス端子６を製造する場合には、無駄な部分が可及的に少なくなる。このため、プラス端子５及びマイナス端子６は、大量生産に特に適するので、生産コストを可及的に低減することができる。
【００５２】
【発明の効果】
以上要するに請求項１に記載の発明によれば、低コスト化及び軽量化を図れる電池ホルダが得られる。
【００５３】
請求項２に記載の発明によれば、より軽量化を図れ、かつ、ボタン電池の電池収容部への挿入を容易に行える。
【００５４】
請求項３に記載の発明によれば、ボタン電池の電池収容部への逆向きの挿入を防止することができる。
【００５５】
請求項４に記載の発明によれば、プラス端子が細長のほぼ矩形状の金属片を折り曲げて形成されているため、１枚の金属板から多数のプラス端子を製造する場合には、無駄になる部分が少ないので、大量生産には特に適し、プラス端子の生産コストを可及的に低減することができる。
【００５６】
請求項５に記載の発明によれば、マイナス端子が細長のほぼ矩形状の金属片を折り曲げて形成されているため、１枚の金属板から多数のプラス端子を製造する場合には、無駄になる部分が少ないので、大量生産には特に適し、マイナス端子の生産コストを可及的に低減することができる。
【図面の簡単な説明】
【図１】本発明の電池ホルダの一例を示す分解斜視図である。
【図２】本発明の電池ホルダにボタン電池を装着した状態を示す斜視図である。
【図３】本発明の電池ホルダにボタン電池を装着した状態を示す断面図である。
【図４】本発明のホルダ本体の変形例を示す斜視図である。
【図５】本発明のプラス端子の一例を示す斜視図である。
【図６】本発明のプラス端子の他の例を示す斜視図である。
【図７】本発明のプラス端子の他の例を示す斜視図である。
【図８】本発明のマイナス端子の一例を示す斜視図である。
【図９】本発明のマイナス端子の他の例を示す斜視図である。
【符号の説明】
１　　電池ホルダ
２　　ボタン電池
５　　プラス端子
６　　マイナス端子
７　　底板
８　　第１周壁
９　　第２周壁
１０　電池収容部
１１　切欠部
１２　段部
２５　突出片
３３　弾性端子部
３４　接触片[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a battery holder for storing a button battery.
[0002]
[Prior art]
The button battery is used to back up a memory on a wiring board of a PC (personal computer), a game machine, an AV device, or the like. The button battery is removably housed in a battery holder fixed to the wiring board.
Various types of battery holders have already been proposed. For example, a holder body (substantially bottomed) that can accommodate a disc-shaped button battery inside by providing a cylindrical peripheral wall at the periphery of a substantially circular bottom plate is provided. (A cylindrical holder body) and two terminals attached to the holder body. When the button battery is fitted and accommodated in the holder body, the button battery is housed so as not to be easily pulled out of the holder body by a removal prevention portion provided on the peripheral wall, and the plus terminal is connected to the positive electrode of the button battery. The negative terminal is electrically connected to the positive electrode of the button battery.
[0003]
However, the battery holder can hold the button battery so as not to be easily pulled out, but the holder body becomes thick as a whole in consideration of strength. The button battery is used as a backup power source for a mass-produced wiring board such as a PC, for example, so that a battery holder for accommodating the button battery is also mass-produced. Therefore, in order to reduce the cost and the weight of the wiring board in recent years, it is desirable to reduce the cost and weight of the battery holder as much as possible.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention has been made in view of such a situation, and an object of the present invention is to provide a battery holder capable of reducing cost and weight.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a battery holder of the present invention has a battery housing portion including a bottom plate and a peripheral wall provided on the bottom plate, in which a button battery is housed such that a minus pole is on the bottom plate side, and a plus terminal is provided. In a battery holder in which a minus terminal is electrically connected to a plus pole of a button battery and a minus terminal is respectively connected to a minus pole, the peripheral wall includes two opposed peripheral walls to which the plus terminal and the minus terminal are individually attached, respectively. On the peripheral wall to which the terminal is attached, a protruding piece is provided which comes into contact with the positive electrode side circular surface of the button battery in order to prevent the detached button battery from being detached, and the plus terminal is used to move the button battery from the peripheral wall to which the minus terminal 6 is attached When contacted in an oblique direction, the button battery at a location opposite to the contact location is housed in the battery housing over the protruding piece. To those having a resilient terminal portions of the elastic deformation, in order to prevent separation of the contained button battery and a contact piece for contacting the positive side circular surface of the battery (claim 1).
[0006]
With this configuration, when the button battery is inserted obliquely into the battery housing from the peripheral wall (second peripheral wall) where the minus terminal is attached to the bottom plate side and the minus terminal is attached, the button battery contacts the elastic terminal portion of the plus terminal. As a result, the elastic terminal portion is elastically deformed against the urging force, and the button battery at a portion facing the contact portion enters the battery housing portion beyond the projecting piece of the other peripheral wall. The button battery that has entered the battery housing portion is pressed against the second peripheral wall by the urging force (restoring force) of the elastic terminal portion, and is prevented from being detached from the battery housing portion by the projecting piece of the second peripheral wall and the contact piece of the plus terminal. In this state, the button battery is housed.
Therefore, the peripheral wall does not need to be provided on the entire bottom plate, and the plus end contributes to housing (locking) the button battery in the battery housing portion, thereby reducing the number of members for locking the button battery. Therefore, cost reduction and weight reduction can be achieved.
[0007]
The bottom plate is provided with cutouts in which the vicinity of the one peripheral wall or the vicinity of both peripheral walls is cut out, and when the vicinity of both the peripheral walls is cut out, the thickness of the bottom plate between the cutouts is set to another value. It is preferable that the thickness be smaller than the thickness of the bottom plate (claim 2).
As described above, by providing the cutouts in the bottom plate and making the bottom plate between the cutout portions thinner, the weight can be further reduced, and the bottom plate is easily bent (flexible) along the direction in which the peripheral walls face each other. Thus, the button battery can be easily inserted into the battery housing.
[0008]
It is preferable to provide a step near the place where the peripheral wall of the bottom plate is provided to prevent reverse insertion of the button battery (claim 3).
As a result, even if the button battery is inserted in the battery compartment in the opposite direction, since the step is provided, the insertion cannot be performed, and the button battery is reversed (in the state where the positive and negative poles are opposite). It will not be accommodated.
[0009]
The plus terminal is provided on a mounting portion formed by bending an elongated substantially rectangular metal piece into a substantially U-shape so as to be mounted on the one peripheral wall, and on a part of the metal piece forming the mounting portion. A locking portion that engages with the one peripheral wall to lock the mounting portion, an elastic terminal portion formed by bending a metal piece closer to the battery housing portion side than the mounting portion into a substantially U-shape, It is preferable to have a contact piece formed by bending a metal piece that is closer to the battery housing portion than the elastic terminal portion.
[0010]
As described above, since the plus terminal is formed by bending a slender, almost rectangular metal piece, when a large number of plus terminals are manufactured from a single metal plate, there is little wasted portion. Particularly suitable for production, the production cost of the positive terminal can be reduced as much as possible.
[0011]
A mounting portion formed by bending the elongated negative metal piece into a substantially U-shape so as to be attached to the other peripheral wall with a bent tip positioned on the bottom plate side; A locking portion provided on a part of the metal piece forming the mounting portion and engaging with the other peripheral wall to lock the mounting portion, and a metal piece closer to the battery accommodating portion than the mounting portion is mounted. When the part is attached to the other peripheral wall, it is preferable to have a contact terminal part which is formed by being inclined and bent with respect to the bottom plate so as to come into contact with the negative pole side circular surface of the button battery housed in the battery housing part. (Claim 5).
[0012]
As described above, since the minus terminal is formed by bending an elongated substantially rectangular metal piece, a large number of minus terminals are not wasted when a large number of minus terminals are manufactured from one metal plate. Particularly suitable for production, the production cost of the negative terminal can be reduced as much as possible.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 3 are views showing an example of the battery holder of the present invention. 1 to 3, reference numeral 1 denotes a battery holder that accommodates a disc-shaped button battery 2.
The button battery 2 is a commercially available disc-shaped battery. One circular surface of the button battery 2 is formed as a positive electrode, and the other surface is formed as a negative electrode. The circular surface of the plus pole has a larger diameter than the circular surface of the minus pole, and a step 3 separating the plus and minus poles is provided at the periphery of the minus pole. That is, the button battery 2 is formed as a positive electrode by connecting the circular surface on the negative electrode side and the peripheral surface (side surface).
[0014]
The battery holder 1 is attached to the holder main body 4 for accommodating the button battery 2, a plus terminal 5 attached to the holder main body 4 and electrically connected to a plus pole of the contained button battery 2, and attached to the holder main body 4. And a negative terminal 6 electrically connected to the negative pole of the accommodated button battery 2.
[0015]
The holder body 4 is integrally formed of a bottom plate 7 and two peripheral walls 8, 9 provided at two opposing positions of the bottom plate 7 with an insulating material, for example, a synthetic resin, and is formed by the bottom plate 7 and the peripheral walls 8, 9. The battery housing 10 is formed.
[0016]
The bottom plate 7 may be formed in any shape as long as there is at least a long portion longer than the diameter of the button battery 2. For example, the bottom plate 7 is formed in a circular flat plate shape having a diameter larger than the diameter of the button battery 2.
Notches 11 are provided in the vicinity of one of the peripheral walls 8 and 9 of the bottom plate 7 or in the vicinity of both peripheral walls 9, in the illustrated example, in the vicinity of both peripheral walls 8 and 9. The shape of the notch 11 is not particularly limited, and may be substantially rectangular as shown, or may be formed in any shape such as a circle, a rectangle, and a polygon.
It is preferable that the thickness between the cutouts 11, 11 of the bottom plate 7 is formed smaller than the thickness of the other bottom plates 7.
[0017]
The two peripheral walls 8 and 9 are provided integrally at two opposing peripheral portions of the circular bottom plate 7 along a direction substantially orthogonal to the plane. These peripheral walls 8 and 9 are each formed in an arc shape whose outer periphery is substantially the same diameter as the periphery of the bottom plate 7 and whose inner periphery is smaller in diameter than the outer diameter of the button battery 2 (the circular surface on the positive pole side). . One of these peripheral walls is formed as a first peripheral wall 8 whose peripheral length is relatively long, and the other is formed as a second peripheral wall 9 whose peripheral length is shorter than the first peripheral wall 8. The first peripheral wall 8 and the second peripheral wall 9 have substantially the same thickness and are arranged on a circumference around the same axis. The heights of the first and second peripheral walls 8 and 9 are formed slightly higher than the thickness of the button battery 2 from the bottom plate 7.
[0018]
In addition, the button battery 2 is inserted into the battery accommodating portion 10 in a reverse direction (a direction in which the plus surface is on the bottom plate 7 side) at a peripheral portion of the bottom plate 7 provided with the first peripheral wall 8 and the second peripheral wall 9. Are provided integrally with each other.
The step part 12 prevents the button battery 2 from being inserted in the reverse direction by using the step 3 of the peripheral part of the negative surface, and fits into the shape of the peripheral part of the circular surface of the negative pole of the button battery 2. It is formed as follows. That is, the step portion 12 is formed in a planar shape when the peripheral edge of the circular surface of the button battery 2 has a positive pole, and the step portion 3 is provided when the peripheral portion has a negative pole. It is formed so that.
[0019]
A first terminal mounting portion 13 is provided integrally at a substantially central portion of the first peripheral wall 8 in the circumferential direction, and a second terminal mounting portion 14 is provided at a substantially central portion of the second peripheral wall 9 in the circumferential direction. Are provided integrally.
The first terminal mounting portion 13 includes a pair of legs 15, 16 and a terminal mounting portion 17 for connecting the legs 15, 16 and mounting the plus terminal 5.
[0020]
The pair of legs 15, 16 are provided at two locations on the peripheral edge of the bottom plate 7, which are circumferentially separated from the center of the first peripheral wall 8 by a predetermined distance, respectively, along the opposing directions of the first and second peripheral walls 8, 9. Are formed in plate shapes extending substantially in parallel. A terminal mounting portion 17 extending in a direction substantially perpendicular to the radial direction is formed slightly radially outward from the peripheral edge of the bottom plate 9 on the inner surfaces of the legs 8 and 9 facing each other. It is provided in.
[0021]
The terminal mounting portion 17 is formed in a substantially rectangular flat plate shape, and the surface (first surface) 17a on the battery housing portion 10 side is located radially outward from the circumference of the bottom plate 7.
A surface (lower surface) of the terminal mounting portion 17 that is substantially parallel to the bottom plate 7 on the bottom plate 7 side is located at a position near the back surface of the bottom plate 7, and a surface (upper surface) facing the lower surface is located on the bottom plate 7 side. It is located at a position substantially apart from the end by the thickness of the button battery 2 (a position separated by a predetermined distance from the extended end of the first peripheral wall 8 (the end opposite to the bottom plate 7) to the bottom plate 7 side). I have.
[0022]
The first surface 17a of the terminal mounting portion 17 is provided with a concave groove 18 having a substantially concave cross section, which is an engaging portion, from the vicinity of the upper end to the lower end.
On the opposite surface (second surface) 17b of the terminal mounting portion 17, an inclined surface 19 is provided which is gradually inclined from near the lower end to the upper end.
[0023]
Similarly to the first terminal mounting portion 13, the second terminal mounting portion 14 includes a pair of legs 20 and 21 and a terminal mounting portion 22 which connects the legs 20 and 21 and to which the minus terminal 6 is mounted. Become.
The pair of leg portions 20 and 21 are provided at two locations on the peripheral edge of the bottom plate 7, which are circumferentially separated from the central portion of the second peripheral wall 9 by a predetermined distance, along the opposing directions of the first and second peripheral walls 8 and 9. Are formed in plate shapes extending substantially in parallel. A terminal mounting part 22 extending along a direction substantially perpendicular to the radial direction is formed slightly radially outward from the peripheral edge of the bottom plate 7 on the inner surfaces of the legs 20 and 21 facing each other. It is provided in.
[0024]
The terminal mounting portion 22 is formed in a substantially rectangular flat plate shape, and the surface (first surface) 22a on the battery housing portion 10 side is located radially outward from the circumference of the outer periphery of the bottom plate 7.
A surface (lower surface) of the terminal mounting portion 22 that is substantially parallel to the bottom plate 7 on the bottom plate 7 side is located at a position near the back surface of the bottom plate 7, and a surface (upper surface) facing the lower surface is on the bottom plate 7 side. It is located at a position substantially apart from the end by the thickness of the button battery 2 (a position separated by a predetermined distance from the extended end of the second peripheral wall 9 (end opposite to the bottom plate 7) to the bottom plate 7 side). I have.
On both surfaces 22a and 22b of the terminal mounting portion 22, there are provided inclined surfaces 23 and 24, respectively, which are gradually inclined from near the lower end to the upper end.
[0025]
Projecting pieces 25, 25 extending substantially parallel to the bottom plate 7 along the direction of the first peripheral wall are provided at the extending end of the second peripheral wall 9 connected to the second terminal mounting portion 14. The protruding pieces 25, 25 come into contact with the positive electrode-side circular surface of the button battery 2 to prevent the button battery 2 housed in the battery housing portion 10 from being detached. The protruding ends of the protruding pieces 25, 25 are arranged at positions where the length between the protruding end and the opposing first peripheral wall 8 is slightly longer than the diameter of the button battery 2 (positive pole side circular surface). Has been established.
[0026]
As described above, the holder body 4 includes the bottom plate 7 and the first and second peripheral walls 8 and 9 which are provided at opposing portions of the bottom plate 7 and have the first and second terminal mounting portions 13 and 14. As shown in FIG. 4, a portion not contributing to the storage of the button battery 2, for example, a side opposite to the peripheral walls 8, 9 from a straight line connecting both ends of the first and second peripheral walls 8, 9 with a straight line. The holder main body 26 may be formed in a substantially rectangular shape in which a portion (on the side where the peripheral walls 8 and 9 are not provided) is cut out.
[0027]
As shown in FIGS. 1 and 5, the plus terminal 5 is formed by bending an elongated, substantially rectangular metal piece 30, for example.
That is, the positive terminal 5 specifically, for example, bends the metal piece 30 along a direction substantially orthogonal to the fixing portion 35 fixed to the wiring board by soldering. The fixing portion 35 and the first bent portion 36a are separated from each other at a position slightly longer than the longitudinal length (the length between the upper surface and the lower surface) of the terminal mounting portion 17 of the first terminal mounting portion 13 from the first bent portion 36a. Is bent along the direction substantially perpendicular to the opposite side, and further, is folded along the direction substantially perpendicular to the second bent portion 36b so as to be folded at a position slightly longer than the thickness of the terminal mounting portion 17 from the second bent portion 36b. That is, the metal piece 30 is bent substantially in a U shape from the fixing portion 35, and the bent portion is formed as the mounting portion 31 that is mounted to the terminal mounting portion 17 of the first terminal mounting portion 13. .
[0028]
Further, the metal piece 30 is bent substantially U-shaped from the third bent portion. The U-shaped bottom is located near the fixing portion 35, and the length between the bottom and the tip is longer than the length from the base to the third bent portion 36c. . This position is a position slightly higher than the circular surface of the button battery 2 on the positive pole side when the plus terminal 5 is attached to the terminal attaching portion 17 of the first terminal attaching portion 13 and the button battery 2 is accommodated in the battery accommodating portion 10. It is. The portion bent in the U-shape is the elastic terminal portion 33, and is configured as a kind of leaf spring.
[0029]
Further, the metal piece 30 is bent from the U-shaped tip portion to the side opposite to the U-shaped portion so as to be inclined from the surface parallel to the fixing portion 35 toward the elastic terminal portion 33, so that the button battery 2 It is formed as a contact piece 34 which is a contact terminal portion that comes into contact with the circular surface on the positive pole side, whereby the positive terminal 5 is formed.
[0030]
At the center of the first bent portion 36a of the metal piece 30, a notch extending in a U-shape along the longitudinal direction of the metal piece 30 and in the direction of the second bent portion 39b is provided. . The portion formed by this notch is arranged on the same plane as the fixing portion 35 to form a U-shaped first locking piece 37 which is the locking portion 32, and the plus terminal 5 is connected to the first terminal. When attached to the terminal mounting part 17 of the mounting part 13, the first locking piece 37 comes into surface contact (engagement) with the lower surface of the terminal mounting part 17 so that the plus terminal 5 is locked.
[0031]
In addition, a substantially central portion near the base end of the metal piece 30 on the base end side of the elastic terminal portion 33 serving as the mounting portion 31 and the elastic terminal portion 33 is provided in the direction toward the base end. A notch extending in the shape of a letter is provided. A portion formed by the cut is bent into the mounting portion 31 so as to be inclined preferably at 25 to 35 °, particularly preferably at 30 °, to form a second locking piece 38 as the locking portion 32. When the plus terminal 5 is attached to the terminal attachment portion 17 of the first terminal attachment portion 13, the second locking piece 38 engages with the concave groove 18 of the first surface 17a of the terminal attachment portion 17, and It is designed to be locked.
[0032]
Further, contact portions 39 protruding to the opposite side from the inside of the elastic terminal portion 33 are provided at portions where the peripheral surface of the button battery 2 of the elastic terminal portion 33 comes into contact, that is, at both sides or near both side portions of the metal piece 30 on the tip end side. , 39 are preferably provided. The contact portion 39 may be formed in any manner, and the shape thereof is not particularly limited. For example, when the contact portion 39 is provided on both sides as shown in the drawing, the contact portion 39 may project in a semicircular shape. In the case where the contact portions 39 are provided in the vicinity of both side portions, as shown in FIG. 7, a flat portion 51 may be provided, and the contact portions 39 may be formed by circular protrusions near both side portions of the flat portion 51. Good.
[0033]
The fixing portion 35 of the plus terminal 5 is formed along a direction substantially perpendicular to the mounting portion so as to be fixed to the wiring board by soldering. However, when the fixing portion 35 is inserted into a groove or a through hole of the wiring board. 6, may be formed via a U-shaped connecting portion 50 so that the fixing portion 35 extends substantially parallel to the surface of the mounting portion where the fixing portion 35 is continuously provided. .
The contact piece 34 may be formed in a flat plate shape, but the tip of the contact piece 34 may be curved or bent to the side opposite to the positive electrode side circular surface of the button battery 2. For example, as shown in FIG. 7, it is preferable to bend the vicinity of the distal end portion into, for example, an R on the side opposite to the bending direction of the contact piece.
[0034]
Like the positive terminal 6, the negative terminal 6 is formed by bending an elongated, substantially rectangular metal piece 40, for example.
That is, as shown in FIGS. 1 and 8, for example, the negative terminal 6 bends the metal piece 40 along a direction substantially orthogonal to the fixing portion 44 fixed to the wiring board by soldering. The fixing portion 44 and the first bent portion 45a are separated from the fixing portion 44 at a position slightly longer than the longitudinal length (the length between the upper surface and the lower surface) of the terminal mounting portion 22 of the second end mounting portion 14 from the first bent portion 45a. Is bent along the direction substantially perpendicular to the opposite side, and further, is folded along the direction substantially perpendicular to the second bent portion 45b so as to be folded at a position slightly longer than the thickness of the terminal mounting portion 22 from the second bent portion 45b. That is, the metal piece 40 is bent substantially in a U-shape from the fixing portion 44, and the portion bent in the U-shape is formed as a mounting portion 41 which is mounted to the terminal mounting portion 22 of the second terminal mounting portion 14. .
[0035]
Further, the metal piece 40 is separated from the third bent portion 45c by a length slightly longer than the longitudinal length (the length between the upper surface and the lower surface) of the terminal mounting portion 22 of the second terminal mounting portion 14. To bend along a direction substantially orthogonal to the side opposite to the fixing portion 44 side. Further, it is bent so as to incline toward the mounting portion 41 at a position separated by a predetermined distance from the fourth bent portion 45d, and is formed as a contact terminal portion 43 that comes into contact with the negative pole circular surface of the button battery 2, whereby , A negative terminal 6 is formed.
The inclination angle of the contact terminal portion 43 is arbitrarily determined as long as the contact terminal portion 43 surely contacts the circular surface of the negative pole of the button battery 2, and is preferably, for example, 15 ° to 20 °, and particularly preferably 18 °. .
[0036]
The tip portion of the contact terminal portion 43 may be curved or bent in a direction opposite to the tilt direction. For example, it is preferable to bend the vicinity of the distal end into, for example, an R on the side opposite to the bending direction of the contact piece.
In addition, a slit 46 is provided at a substantially central portion in the width direction of the contact terminal portion 43 from the vicinity of the base portion (inclined bent portion 45e) to the front end portion to form two contact terminal pieces 47, 47. It is preferable that the two contact terminal pieces 47 contact the circular surface of the negative pole of the button battery 2.
[0037]
At the center of the first bent portion 45a of the metal piece 40, a notch extending in a U-shape along the longitudinal direction of the metal piece 40 and in the direction of the second bent portion 45b is provided. The portion formed by the cut is disposed on the same plane as the fixing portion 44, and a U-shaped first locking piece 48 as the locking portion 42 is formed.
At the center of the fourth bent portion 45d of the metal piece 40, a notch extending in a U-shape toward the third bent portion 45c is provided, and the portion formed by this cut is the fixing portion 44. A U-shaped second locking piece 49, which is the locking portion 42, is formed on the same plane as that of FIG.
When the minus terminal 6 is attached to the terminal attaching portion 22 of the second terminal attaching portion 14, the first and second locking pieces 48 and 49 come into surface contact (engagement) with the lower surface of the terminal attaching portion 22, respectively. The minus terminal 6 is locked.
[0038]
The contact terminal portion 43 is formed to be inclined at a position separated by a predetermined distance from the fourth bent portion 45d, and is formed to be bent at the fourth bent portion 45d so as to be inclined at, for example, 15 ° to 20 °. You may do so.
The fixing portion of the minus terminal 6 is formed along a direction substantially perpendicular to the mounting portion 41 so as to be fixed to the wiring board by soldering. Alternatively, as shown in FIG. 9, the fixing portion 44 may be formed via a U-shaped connecting portion 50 so as to extend substantially parallel to the surface of the mounting portion where the fixing portion 44 is continuously provided. Good.
[0039]
As shown in FIGS. 1 to 3, the battery holder 1 attaches the plus terminal 5 to the first terminal attachment portion 13 of the first peripheral wall 8 of the holder main body 4 and attaches the second terminal to the second peripheral wall 9. The negative terminal 6 is attached to the portion 14.
Specifically, the positive terminal 5 is mounted by opening the substantially U-shaped mounting portion 31 of the positive terminal 5 and the terminal mounting of the first terminal mounting portion 13 so that the fixing portion 35 is located outside the holder body 4. The mounting portion 31 of the plus terminal 5 is moved so as to cover the terminal mounting portion 17 by contacting the upper end portion of the portion 17, and between the second bent portion 36 b and the third bent portion 36 c of the mounting portion 31. When the terminal 5 contacts the upper end of the terminal mounting portion 17, the first locking piece 37 makes surface contact (engagement) with the lower surface of the terminal mounting portion 17, and the second locking piece 38 The positive terminal 5 is engaged with the concave groove 18 of the first surface 17a, and is locked to the holder body 4.
[0040]
At this time, since the inclined surface 19 is provided on the second surface 17 b of the terminal mounting portion 17, even if the first locking piece 37 extends into the mounting portion 31, the positive terminal 5 can easily be connected to the second terminal 17. It can be attached to the terminal attachment part 17 of the one terminal attachment part 13.
Further, the first and second locking pieces 37 and 38, which are the locking portions 32, are formed by U-shaped cuts extending along the longitudinal direction of the terminal 5, so that they are reliably formed in a simple shape. The positive terminal 5 can be locked.
[0041]
Specifically, the minus terminal 6 is attached by opening the substantially U-shaped attachment portion 41 of the minus terminal 6 and by attaching the terminal to the second terminal attachment portion 14 such that the fixing portion 44 is located outside the holder body 4. The mounting portion 41 is moved so as to cover the terminal mounting portion 22 by contacting the upper end of the portion 22 and the terminal 6 between the second bent portion 45b and the third bent portion 45c of the mounting portion 41 is moved. When contacting the upper end of the terminal mounting portion 22, the first and second locking pieces 48, 49 are in surface contact (engagement) with the lower surface of the terminal mounting portion 22, respectively, and the minus terminal 6 is locked by the holder body 4. You.
[0042]
At this time, since the inclined surfaces 23 and 24 are respectively provided on both surfaces of the terminal mounting portion 22, even if the first and second locking pieces 48 and 49 extend in the mounting portion 41 respectively, it is easy. The negative terminal 6 can be attached to the terminal attachment portion 22 of the second terminal attachment portion 14.
Further, the first and second locking pieces 46 and 49, which are the locking portions 42, are formed by U-shaped cuts extending along the longitudinal direction of the terminal 6, so that they are reliably formed in a simple shape. The minus terminal 6 can be locked.
[0043]
In order to store the button battery 2 in the battery holder 1 thus obtained, the button battery 2 is arranged such that the circular surface on the minus pole side is on the bottom plate 7 and the peripheral surface of the button battery 2 is It is brought into contact with the elastic terminal portion 33. At this time, the button battery 2 on the peripheral surface opposite to the peripheral surface in contact with the elastic terminal portion 33 is located on the second peripheral wall 9. That is, the button battery 2 is in a state inclined with respect to the battery accommodating portion 10 (the bottom plate 7).
[0044]
When the portion of the button battery 2 on the second peripheral wall 9 is pushed (slid) toward the plus terminal 5, the elastic terminal portion 33 that is in contact with the peripheral surface of the button battery 2 is biased by the pressing force. The button battery 2 is elastically deformed and moves (slides) in the direction of the plus terminal 5, and the button battery 2 at a location facing the contact location passes over the protruding pieces 25, 25 of the second peripheral wall 9, thereby causing the button battery 2 to move. Enters the battery housing 10.
[0045]
At this time, since the step portion 12 is provided in the vicinity of the place where the peripheral walls 8 and 9 of the bottom plate 7 are provided, even if the button battery 2 is inserted into the battery housing portion 10 in the opposite direction, the step portion 12 Since the insertion of the button battery cannot be performed, the button battery is not stored in the opposite direction.
[0046]
The button battery 2 that has entered the battery accommodating portion 10 is pressed and moved in the direction of the second peripheral wall 9 by the urging force (restoring force) of the elastic terminal portion 33 to come into contact with the second peripheral wall 9, and the protruding pieces 25, 25 contacts the circular surface on the positive pole side of the button battery 2. Also, since the contact piece 34 of the plus terminal 5 is in contact with the circular surface facing the place where the projecting pieces 25, 25 are in contact, the button battery 2 is fitted into the battery It is housed in a state where it is prevented from coming off.
[0047]
Thus, the elastic terminal portion 33 of the plus terminal 5 comes into contact with the peripheral surface of the button battery 2 housed in the battery housing portion 10 and the contact piece 34 comes into contact with the circular surface on the plus pole side. And the plus terminal 5 is electrically connected.
When the button battery 2 enters the battery accommodating portion 10, the contact terminal portion 33 of the negative terminal 6 is inclined from the vicinity of the bottom plate 7 into the battery accommodating portion 10, so that the circular surface on the negative pole side has a contact terminal. Since the contact is made in a state where the portion 33 is pressed, the minus pole of the button battery 2 and the minus terminal 6 are electrically connected.
[0048]
Therefore, in the battery holder 1 of the present invention, it is not necessary to provide the peripheral wall on the entire bottom plate, and only the portion for attaching the plus terminal, the minus terminals 5 and 6 and the portion for providing the protruding pieces 25 and 25 are required. Further, the button battery 2 housed in the battery housing portion 10 is pressed against the second peripheral wall 9 by the urging force of the elastic terminal portion 33 of the plus terminal 5, so that the plus terminal 5 houses the button battery 2 in the battery housing portion 10. (Locking), the number of members for locking the button battery 2 can be reduced. As a result, the cost and weight of the battery holder 1 of the present invention can be reduced.
[0049]
As shown in FIG. 4, the holder main body 26 is connected to a portion not contributing to the storage of the button battery 2, for example, from a straight line connecting both ends of the first and second peripheral walls 8 and 9 with a straight line. , 9 is formed in a substantially rectangular shape in which a portion on the opposite side (the side on which the peripheral walls 8 and 9 are not provided) is cut out, so that weight and cost can be further reduced.
[0050]
Also, as shown in FIG. 1, the notches 11, 11 are provided in the bottom plate 7, and the bottom plate 7 between the notches 11, 11 is formed thinner than the other bottom plates 7, so that the weight can be further reduced. Further, the holder main body is provided with cutouts 11, 11 in the bottom plate 7 and the bottom plate 7 between the cutouts 11, 11 is formed thinner than the other bottom plates 7, so that the bottom plate 7 bends along the direction in which the peripheral walls face each other. (Flexibility), so that the button battery can be easily inserted into the battery accommodating portion. That is, when the bottom plate 7 is hardly flexible, for example, when the button battery 2 is inserted into the battery accommodating portion 10, the bottom plate 7 is hardly flexible. . On the other hand, when the bottom plate 7 inserts the button battery 2 into the battery accommodating portion 10, the peripheral wall is flexed and curved, for example, along the direction in which the peripheral wall faces, that is, the bottom wall 7 can follow the moving direction of the button battery. Since the battery is bent, the button battery 2 can be easily inserted.
[0051]
The positive terminal 5 and the negative terminal 6 are each formed by bending a slender, substantially rectangular metal piece 30, 40 as shown in FIGS. When manufacturing the plus terminal 5 and the minus terminal 6 from a plate, useless portions are reduced as much as possible. For this reason, since the plus terminal 5 and the minus terminal 6 are particularly suitable for mass production, the production cost can be reduced as much as possible.
[0052]
【The invention's effect】
In short, according to the first aspect of the present invention, a battery holder that can be reduced in cost and weight can be obtained.
[0053]
According to the second aspect of the present invention, the weight can be further reduced, and the button battery can be easily inserted into the battery accommodating portion.
[0054]
According to the third aspect of the invention, it is possible to prevent the button battery from being inserted in the battery housing in the reverse direction.
[0055]
According to the fourth aspect of the present invention, the plus terminal is formed by bending a slender, substantially rectangular metal piece. Therefore, when a large number of plus terminals are manufactured from one metal plate, the plus terminal is useless. Since the number of parts is small, it is particularly suitable for mass production, and the production cost of the positive terminal can be reduced as much as possible.
[0056]
According to the fifth aspect of the present invention, the minus terminal is formed by bending a slender, substantially rectangular metal piece. Therefore, when a large number of plus terminals are manufactured from one metal plate, the minus terminal is useless. Since the number of parts is small, it is particularly suitable for mass production, and the production cost of the negative terminal can be reduced as much as possible.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an example of a battery holder of the present invention.
FIG. 2 is a perspective view showing a state where a button battery is mounted on the battery holder of the present invention.
FIG. 3 is a cross-sectional view showing a state where a button battery is mounted on the battery holder of the present invention.
FIG. 4 is a perspective view showing a modified example of the holder main body of the present invention.
FIG. 5 is a perspective view showing an example of a plus terminal of the present invention.
FIG. 6 is a perspective view showing another example of the plus terminal of the present invention.
FIG. 7 is a perspective view showing another example of the plus terminal of the present invention.
FIG. 8 is a perspective view showing an example of a minus terminal of the present invention.
FIG. 9 is a perspective view showing another example of the minus terminal of the present invention.
[Explanation of symbols]
1 Battery holder
2 button batteries
5 Plus terminal
6 Negative terminal
7 Bottom plate
8 First peripheral wall
9 Second peripheral wall
10 Battery compartment
11 Notch
12 steps
25 projecting piece
33 elastic terminal
34 contact piece

Claims

A button battery is accommodated in a battery accommodating portion composed of a bottom plate and a peripheral wall provided on the bottom plate such that a negative pole is on the bottom plate side, and a plus terminal is a plus pole of the button battery 2 and a minus terminal is a minus pole, respectively. In a battery holder that is electrically connected,
The peripheral wall includes two opposing peripheral walls to which the plus terminal and the minus terminal are individually attached, and the peripheral wall to which the minus terminal is attached has a circular shape on the positive pole side of the button battery in order to prevent detachment of the stored button battery. A protruding piece that contacts the surface is provided, and when the plus terminal makes the button battery contact obliquely from the peripheral wall to which the minus terminal is attached, the button battery at a location facing the contact location exceeds the protruding piece. A battery holder, comprising: an elastic terminal portion that is elastically deformed to be accommodated in a battery accommodating portion; and a contact piece that contacts a positive-side circular surface of the accommodated button battery to prevent detachment of the accommodated button battery.

The bottom plate is provided with cutouts in which the vicinity of the one peripheral wall or the vicinity of both peripheral walls is cut out, and when the vicinity of both the peripheral walls is cut out, the thickness of the bottom plate between the cutouts is set to another value. The battery holder according to claim 1, wherein the thickness is smaller than the thickness of the bottom plate.

3. The battery holder according to claim 1, wherein a step portion for preventing the button battery from being inserted in a reverse direction is provided near a portion of the bottom plate where the peripheral wall is provided. 4.

The plus terminal is provided on a mounting portion formed by bending an elongated substantially rectangular metal piece into a substantially U-shape to be mounted on the one peripheral wall, and on a part of the metal piece forming the mounting portion. A locking portion that locks the mounting portion by engaging with the one peripheral wall; an elastic terminal portion formed by bending a metal piece on the battery housing portion side from the mounting portion into a substantially U-shape; The battery holder according to any one of claims 1 to 3, further comprising: a contact piece formed by bending a metal piece on the battery housing portion side from the elastic terminal portion.

An attachment portion formed by bending the elongated, substantially rectangular metal piece on the other peripheral wall so that the bent end portion is attached to the bottom plate side so that the minus terminal is attached to the bottom plate side; A locking portion provided on a part of the metal piece forming the mounting portion and engaging with the other peripheral wall to lock the mounting portion, and a metal piece closer to the battery accommodating portion than the mounting portion is mounted. A contact terminal portion formed by being inclined and bent with respect to the bottom plate so as to come into contact with the negative electrode side circular surface of the button battery housed in the battery housing portion when the portion is attached to the other peripheral wall. The battery holder according to any one of claims 4 to 4.