JP4292537B2 - Battery holder - Google Patents

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Publication number
JP4292537B2
JP4292537B2 JP2003035186A JP2003035186A JP4292537B2 JP 4292537 B2 JP4292537 B2 JP 4292537B2 JP 2003035186 A JP2003035186 A JP 2003035186A JP 2003035186 A JP2003035186 A JP 2003035186A JP 4292537 B2 JP4292537 B2 JP 4292537B2
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contact
elastic
housing
battery
bottom plate
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JP2004247143A (en
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直之 小野
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SMK Corp
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SMK Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Description

【0001】
【発明の属する技術分野】
本発明は、主にビデオカメラ等の電子機器のバックアップ等に使用されるリチウムバッテリ等の扁平型電池を収容し、プリント配線基板等に電気的に接続させる電池ホルダに関する。
【0002】
【従来の技術】
一般に、ビデオカメラ等の電子機器では、内部時計の継続動作や、メモリーのバックアップ用にリチウムバッテリ等の円盤状の扁平型電池を、主電源とは別に備えており、このような扁平型電池は、図9に示す如き電池ホルダを用いて電子機器のプリント配線基板上に装着されるようになっている(例えば、特許文献1を参照)。
【0003】
電池ホルダ1は、平板状の底版部2及び底版部2の周縁に立ち上げた周壁3を有するハウジング4と、底版部より突出し、扁平型電池5の一端面5aに弾性的に接触する端面側接触端子6と、扁平型電池5の周面5bに弾性的に接触する周面側接触端子7とを備えるとともに、ハウジング4の上面に内側に突出した前方鍔部8及び後方鍔部9が一体に形成され、端面側接触端子6及び周面側接触端子7の接続片6a,7aがそれぞれプリント配線基板10のパターン上に半田等を介して接続されるようになっている。
【0004】
端面側接触端子6は、基端側が支持され、扁平型電池の一端面5aに接触する接触部11を有する弾性接触片12を備え、扁平型電池5がハウジング4に装填されると、扁平型電池5の一端面5a即ち負極の面が弾性接触片12の弾性に抗して接触部11に接触し、電気的に接続されるとともに、弾性接触片12の弾性力により前後方鍔部側(上側)8,9に扁平型電池5が付勢されるようになっている。
【0005】
尚、扁平型電池5は、図10に示すように、円盤状に形成され、一方の端面5cと周面5bとは金属板により一体に形成されて正極をなし、他方の端面5aを構成する金属板はこの正極とは絶縁されて負極をなしている。
【0006】
【特許文献1】
特公平3−40464号公報(第4図、第6図)
【0007】
【発明が解決しようとする課題】
しかし、扁平型電池の厚みにはバラツキがあり、薄い扁平型電池を上述のような従来の電池ホルダに装填すると、弾性接触片が接触片の基端側のみを支持する片持ち構造であるので、十分な接触圧が得られない場合があるという問題があった。
【0008】
また、扁平型電池をハウジング内に挿入する際に、扁平型電池の外面が誤って端面側接触端子の弾性接触片先端に接触してしまい、弾性接触片が変形してしまうことがあるという問題があった。
【0009】
本発明は、このような従来の技術の状況を鑑み、接触端子が扁平型電池に対して常に安定した接触圧で接触し、且つ誤って接触することによる端面側接触端子の変形が防止できる電池ホルダの提供を目的とする。
【0010】
【課題を解決するための手段】
上述の如き従来の問題を解決し、所期の目的を達成するための請求項1の発明は、平板状の底版部と、該底版部の周縁に立ち上げた周壁とを有し、内部に扁平型電池を着脱可能に収容するハウジングと、該ハウジングの底版部より突出して前記扁平型電池の一方の端面に弾性的に接触する弾性接触部を有する端面側接触端子とを備えた電池ホルダにおいて、弾性接触部は、前記扁平型電池の一方の端面に接触する接触部を有する断面山型形状の一対の弾性片と、該両弾性片の両端部を互いに連結する連結片とを一体に備え、該両連結片がそれぞれ前記ハウジングの底版部に接触するようにし、該ハウジングは、底版部に端面側接触端子の連結片がスライド自在に嵌り込む保持用溝を備え、該保持用溝にはその底面を、弾性片の長さ方向に幅を持たせて窪ませ、前記弾性片が扁平電池によって押し込まれて変形しても、前記連結片以外の部分がハウジング底版部に接触しないようにした逃げ用凹部が形成されていることを特徴とする。
【0011】
このように構成することによって、端面側接触端子が扁平型電池の一端面に対し、常に安定した接触圧で接触するようになる。また、弾性接触部の先端部分を引っ掛けることによっておこる変形を好適に防止することができ、弾性接触部の先端部、即ち連結片を引っ掛けることなくスライド可能となり、また、連結片が保持溝の縁に当接することによって、弾性片の両端が好適に支持され安定した接触圧を得ることができ、更に、接触端子が変形しても連結片以外の部分がハウジングに対して接触することがない。
【0012】
【発明の実施の形態】
次に、本発明に係る電池ホルダの実施の形態を図について説明する。尚、上述の従来例と同一の部分には、同一符号を付して説明を省略する。
【0013】
図1〜図3は電池ホルダをプリント配線基板に設置した状態を示し、符号20は電池ホルダ、符号5は扁平型電池、10はプリント配線基板である。
【0014】
扁平型電池5は、図10に示す従来例と同様に、円盤状に形成され、一方の端面5cと周面5bとは金属板により一体に形成されて正極をなし、他方の端面5aを構成する金属板はこの正極とは絶縁されて負極をなしている。
【0015】
電池ホルダ20は、扁平型電池5を収容するハウジング21と、扁平型電池の端面5aに接触する端面側接触端子22と、扁平型電池の周面5bに接触する周面側接触端子23とを備え、端面側接触端子22及び周面側接触端子23の接続部がプリント配線基板上のパターンに半田等を介して接続されることによって、電池ホルダ20がプリント配線基板10に対し、電気的且つ力学的に接続されるようになっている。
【0016】
端面側接触端子22は、図4に示すように、扁平型電池5の一端面、即ちマイナス電極側端面5aに接触する弾性接触部24と、ハウジング21に固定される取付部25と、プリント配線基板10のパターンに半田等を介して接続される接続部26とを備え、これらが導電性金属材を折曲加工することにより一体に形成されている。
【0017】
弾性接触部24は、断面山型形状の一対の弾性片27,27と、両弾性片27,27の端部を相互に連結する連結片28,28とを備え、弾性片27の山型の頂上部に扁平型電池のマイナス電極側端面5aに接触する接点部29が形成されている。
【0018】
連結片28は、円弧状に形成され、その一部がハウジング21の底版部に接触するようになっている。
【0019】
取付部25は、一対の把持片30a,30bを有する断面コ字状に形成され、その一方の把持片30aの端部が接続片31を介して弾性接触部24の一方の連結片28と連結されている。
【0020】
また、他方の把持片30bの両側縁には、ハウジング21に形成された圧入溝に圧入される圧入片32,32が一体に形成され、両把持片30a,30bでハウジング21の肉厚部を把持するとともに、圧入片32をハウジング21に形成された圧入溝に圧入することにより、端面側接触端子22をハウジング21に固定するようになっている。
【0021】
接続部26は、平板状に形成され、取付部25の把持片30bの端部に連続して形成され、この接続部26を半田等を介してプリント配線基板10のパターン上に接続することによって、電池ホルダ20全体がプリント配線基板10上に取り付けられるようになっている。
【0022】
周面側接触端子23は、図5に示すように、扁平型電池の周面5b、即ちプラス電極に接触する弾性接触部33と、ハウジング21に固定される取付部34と、プリント配線基板のパターンに半田等を介して接続される接続部35とを備え、これらが導電性金属材を折曲加工することにより一体に形成されている。
【0023】
取付部35は、一対の把持片36a,36bを有する断面コ字状に形成され、一方の把持片36bの両側縁には、ハウジング21に形成された圧入溝に圧入される圧入片37,37が一体に形成され、両把持片36a,36bでハウジング21の肉厚部を把持するとともに、圧入片37,37をハウジング21の圧入溝に圧入することにより、端面側接触端子23をハウジング21に固定するようになっている。
【0024】
弾性接触部33は、取付部35の他方の把持片36aの両側縁より突出した一対の弾性片38,38を備え、弾性片38の先端部に扁平型電池の周面5bに接触する接点部39が形成されている。
【0025】
また、弾性片38は、円弧状に形成され、先端部に行くに従って、ハウジング21の周壁部内面と弾性片38との間の隙間が広くなるようになっており、こうすることによって、弾性片先端の接触部39が扁平型電池の周面5bに弾性的に接触するようになっている。
【0026】
接続部35は、平板状に形成され、取付部35の把持片36bの端部に連続して形成され、この接続部35を半田等を介してプリント配線基板10のパターン上に接続することによって、電池ホルダ20全体がプリント配線基板10上に取り付けられるようになっている。
【0027】
ハウジング21は、合成樹脂材等の絶縁材をもって一体成形され、平板状の底版部40と、底版部40の周縁より立ち上げた形状の周壁部41とを備え、底版部40及び周壁部41に囲まれた部分に扁平型電池5が収容される電池収容部42が形成されている。
【0028】
底版部40の内側面、即ち電池収容部42の底面には、小判型の保持溝43が形成され、この保持溝43に端面側接続端子22の連結片28がスライド自在に嵌り込むようになっている。
【0029】
この保持溝43を設けることによって、電池収容部42に扁平型電池5を装填し、弾性片27,27がマイナス電極側端面5aに押圧されると、弾性片27の山型が拡開し、連結片28が保持溝43に沿ってスライドし、ある程度スライドすると連結片28は保持溝43の縁に当接する。そして、弾性片27は、その両端、即ち両連結片28,28をハウジングの底版部40に支持され、所定の接触圧により扁平型電池5と接触するようになっている。
【0030】
また、保持溝43の中央部分には、該保持溝43の底面を窪ませた逃げ用凹部44が形成されている。この逃げ用凹部44は、図6に示すように、弾性片43の長さ方向に幅を持たせて形成されており、弾性片27が扁平電池5によって押し込まれて変形しても、連結片28以外の部分がハウジング底版部40には接触しないようになっている。
【0031】
尚、底版部40の裏面には、プリント配線基板10に形成された位置決め用穴に挿入され、プリント配線基板10に対する電池ホルダ20の位置決めを行う為の突起45が形成されている。
【0032】
周壁部41には、端面側接触端子22及び周面側接触端子23を取り付ける為の取付部46,46が相互に対向した位置に形成されている。
【0033】
この取付部46には、端面側接触端子22及び周面側接触端子23の把持片によって把持される把持用肉厚部47と、把持用肉厚部47の一端面と連続したスリット状の圧入溝48とが形成されている。
【0034】
また、このハウジング21の両側部には、底版部40から周壁部41に亘って溝部49,49が設けられ、その溝部49,49に挟まれて可変弾性片50が形成され、また、周壁部41の上端部に溝51,51が設けられ、その溝51,51に挟まれて、可変弾性片50に一体に支持された爪支持部52が形成されている。
【0035】
可変弾性片50は、底版部40より水平方向に一体に突出した水平梁部50aと、水平梁部50aの端部より上向きに突出した垂直梁部50bとが一体に形成され、底版部40に支持された水平梁部50aの基端部を基点として弾性変形できるようになっている。
【0036】
爪支持部52は、扁平型電池5の外周に沿った形状に形成され、その周方向長さは指が係る程度の長さとなっている。また、この爪支持部52の扁平型電池側、即ち内側面の両端部には、それぞれ係止爪53,53が一体に突設されている。
【0037】
係止爪53は、下側が厚いテーパ状に形成され、下面が扁平型電池の端面5cに当接して抜け止めするようになっている。
【0038】
この電池ホルダ20に扁平型電池5を装填するには、扁平型電池5の一端面、即ちマイナス電極面5aをハウジング21の底版部40に対向させ、そのまま他端面、即ちプラス電極側端面5cを押して、端面側接触端子22の弾性に抗しながら電池収容部42に扁平型電池5を押し込む。
【0039】
このとき、係止爪53,53のテーパ面に扁平型電池5の周面5bが接触し、係止爪53、爪支持部52を可変弾性片50の弾性に抗して半径方向に押し広げる。
【0040】
そして、図3に示すように、扁平型電池5が電池収容部42に収容されると、可変弾性片50の弾性により係止爪53、爪支持部52が元の位置に回復するとともに、扁平型電池5が端面側接触端子22、即ち弾性接触部24の弾性片27,27の弾性力により付勢されることにより、係止爪53,53の下面に扁平型電池のプラス電極側端面5cが当接して抜け止めされ、電池ホルダ20に扁平型電池が装填される。
【0041】
一方、電池ホルダ20より扁平型電池5を取り外すには、爪支持部52に指を当て、軽く半径方向に押し広げることによって、係止爪53がプラス電極側端面5cより外れるとともに、扁平型電池5が端面側接触端子22の弾性力により押し出されるようになっている。
【0042】
尚、上述の実施例では、端面側接触端子の連結片28,28を円弧状に形成した例について説明したが、連結片を真っ直ぐな帯状に形成してもよい。即ち、上述の実施例では、弾性接触部24が円環状に形成されていたものであるのに対し、弾性接触部を四角形状としてもよい。
【0043】
また、可変弾性片を上述の実施例の他、図8に示すように、ハウジングの周壁部41の周方向に溝60を形成することにより、可変弾性片61を形成してもよい。この場合、可変弾性片61の端部が爪支持部を形成するようになっている。
【0044】
【発明の効果】
上述のように、本発明に係る電池ホルダは、弾性接触部は、扁平型電池の一方の端面に接触する接触部を有する断面山型形状の一対の弾性片と、両弾性片の両端部を互いに連結する連結片とを一体に備え、両連結片がそれぞれハウジングの底版部に接触するようにしたことによって、弾性片が2点支持構造となり、端面側接触端子が扁平型電池の一端面に対し、常に安定した接触圧で接触するようになる。
【0045】
また、弾性接触部の先端部分が、弾性片の端部を連結片により連結した構造となっているので、引っ掛けることによる弾性接触部の変形を好適に防止することができ、連結片を円弧状とすることで更に引っ掛かり難くなる。
【0046】
更に、弾性片はその両端を連結片によって連結されているので、両弾性片は扁平型電池に対して、バランス良く接触し、安定した接触圧で接触するとともに、扁平型電池全体をバランス良く上方に付勢する。従って、爪支持部を押し広げると、扁平型電池を好適に押しだし、簡単に取り外すことができる。
【0047】
ハウジングが、底版部に端面側接触端子の連結片がスライド自在に嵌り込む保持用溝を備えることによって、弾性接触部の先端部、即ち連結片を引っ掛けることなくスライド可能となり、また、連結片が保持溝の縁に当接することによって、安定した接触圧を得ることができる。
【0048】
保持用溝が、中央部に逃げ用凹部を備えたことによって、接触端子が変形しても連結片以外の部分がハウジングに対して接触することがない。
【図面の簡単な説明】
【図1】 本発明に係る電池ホルダの実施の一例を示す平面図である。
【図2】 同上のA−A線断面図である。
【図3】 同上の扁平型電池を収容した状態を示す断面図である。
【図4】 (a)は図1中の端面側接続端子を示す平面図、(b)は同正面図である。
【図5】 (a)は同上の周面側接触端子を示す平面図、(b)は同正面図である。
【図6】 (a)は図1中のハウジングを示す平面図、(b)は同側面図、(c)は同底面図である。
【図7】 図6中のハウジングを示す部分破断斜視図である。
【図8】 同上のハウジングの他の一例を示す部分破断斜視図である。
【図9】 従来の電池ホルダの一例を示す斜視図である。
【図10】 (a)は扁平型電池を示す上から見た斜視図、(b)は同下から見た斜視図である。
【符号の説明】
20 電池ホルダ
21 ハウジング
22 端面側接触端子
23 周面側接触端子
24 弾性接触部
25 取付部
26 接続部
27 弾性片
28 連結片
29 接点部
30 把持片
31 接続片
32 圧入片
33 弾性接触部
34 取付部
35 接続部
36 把持片
37 圧入片
38 弾性片
39 接点部
40 底版部
41 周壁部
42 電池収容部
43 保持溝
44 逃げ用凹部
45 突起
46 取付部
47 把持用肉厚部
48 圧入溝
49 切欠部
50 可変弾性片
50a 水平梁部
50b 垂直梁部
51 切欠
52 爪支持部
53 係止爪
60 溝
61 可変弾性片
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery holder that accommodates a flat battery such as a lithium battery that is mainly used for backup of an electronic device such as a video camera and is electrically connected to a printed wiring board or the like.
[0002]
[Prior art]
In general, electronic devices such as video cameras are equipped with a disc-shaped flat battery such as a lithium battery for continuous operation of the internal clock and backup of the memory separately from the main power supply. 9 is mounted on a printed circuit board of an electronic device using a battery holder as shown in FIG. 9 (see, for example, Patent Document 1).
[0003]
The battery holder 1 includes a flat bottom plate portion 2 and a housing 4 having a peripheral wall 3 raised at the periphery of the bottom plate portion 2, and an end surface side that protrudes from the bottom plate portion and elastically contacts one end surface 5 a of the flat battery 5. A contact terminal 6 and a peripheral surface side contact terminal 7 that elastically contacts the peripheral surface 5 b of the flat battery 5 are provided, and a front collar 8 and a rear collar 9 projecting inwardly on the upper surface of the housing 4 are integrated. The connection pieces 6a and 7a of the end surface side contact terminal 6 and the peripheral surface side contact terminal 7 are respectively connected to the pattern of the printed wiring board 10 via solder or the like.
[0004]
The end surface side contact terminal 6 includes an elastic contact piece 12 that is supported on the base end side and has a contact portion 11 that contacts the one end surface 5a of the flat battery. When the flat battery 5 is loaded into the housing 4, the flat surface One end surface 5a of the battery 5, that is, the surface of the negative electrode is in contact with the contact portion 11 against the elasticity of the elastic contact piece 12 and is electrically connected, and the front / rear flange side (by the elastic force of the elastic contact piece 12) The flat battery 5 is biased to the upper side 8 and 9.
[0005]
As shown in FIG. 10, the flat battery 5 is formed in a disk shape, and one end surface 5c and the peripheral surface 5b are integrally formed of a metal plate to form a positive electrode and constitute the other end surface 5a. The metal plate is insulated from the positive electrode to form a negative electrode.
[0006]
[Patent Document 1]
Japanese Examined Patent Publication No. 3-40464 (FIGS. 4 and 6)
[0007]
[Problems to be solved by the invention]
However, there is variation in the thickness of the flat battery, and when a thin flat battery is loaded in the conventional battery holder as described above, the elastic contact piece has a cantilever structure that supports only the base end side of the contact piece. There is a problem that sufficient contact pressure may not be obtained.
[0008]
Further, when the flat battery is inserted into the housing, the outer surface of the flat battery may accidentally contact the tip of the elastic contact piece of the end surface side contact terminal, and the elastic contact piece may be deformed. was there.
[0009]
In view of the state of the prior art, the present invention is a battery in which the contact terminal is always in contact with the flat battery with a stable contact pressure, and deformation of the end face side contact terminal due to erroneous contact can be prevented. The purpose is to provide a holder.
[0010]
[Means for Solving the Problems]
The invention of claim 1 for solving the conventional problems as described above and achieving the intended purpose has a flat bottom plate portion and a peripheral wall raised at the periphery of the bottom plate portion. A battery holder comprising: a housing that detachably accommodates a flat battery; and an end surface side contact terminal that protrudes from a bottom plate portion of the housing and has an elastic contact portion that elastically contacts one end surface of the flat battery. The elastic contact portion integrally includes a pair of angle-shaped elastic pieces having a contact portion in contact with one end face of the flat battery, and a connecting piece for connecting both ends of the elastic pieces to each other. The connecting pieces are in contact with the bottom plate portion of the housing , and the housing is provided with holding grooves into which the connecting pieces of the end surface side contact terminals are slidably fitted into the bottom plate portion. Make the bottom surface wider in the length direction of the elastic piece. Myself understood by depressing, even the elastic piece is deformed pushed in by the flat battery, a portion other than the connecting piece, characterized in that the recess for relief that was not in contact with the housing bottom plate portion.
[0011]
By comprising in this way, an end surface side contact terminal always comes in contact with the one end surface of a flat battery with a stable contact pressure. In addition, deformation caused by hooking the tip portion of the elastic contact portion can be suitably prevented, and the tip end portion of the elastic contact portion, that is, the connecting piece can be slid without being hooked. By being in contact with each other, both ends of the elastic piece are suitably supported, and a stable contact pressure can be obtained. Further, even if the contact terminal is deformed, portions other than the connecting piece do not contact the housing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a battery holder according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part same as the above-mentioned prior art example, and description is abbreviate | omitted.
[0013]
1 to 3 show a state in which a battery holder is installed on a printed wiring board. Reference numeral 20 denotes a battery holder, reference numeral 5 denotes a flat battery, and reference numeral 10 denotes a printed wiring board.
[0014]
As in the conventional example shown in FIG. 10, the flat battery 5 is formed in a disk shape, and one end surface 5c and the peripheral surface 5b are integrally formed of a metal plate to form a positive electrode and constitute the other end surface 5a. The metal plate is insulated from the positive electrode to form a negative electrode.
[0015]
The battery holder 20 includes a housing 21 that accommodates the flat battery 5, an end surface side contact terminal 22 that contacts the end surface 5 a of the flat battery, and a peripheral surface side contact terminal 23 that contacts the peripheral surface 5 b of the flat battery. The battery holder 20 is electrically and electrically connected to the printed wiring board 10 by connecting the connecting portions of the end surface side contact terminals 22 and the peripheral surface side contact terminals 23 to the pattern on the printed wiring board via solder or the like. It is designed to be connected dynamically.
[0016]
As shown in FIG. 4, the end surface side contact terminal 22 includes an elastic contact portion 24 that contacts one end surface of the flat battery 5, that is, the negative electrode side end surface 5a, an attachment portion 25 fixed to the housing 21, and a printed wiring. And a connection portion 26 connected to the pattern of the substrate 10 via solder or the like, and these are integrally formed by bending a conductive metal material.
[0017]
The elastic contact portion 24 includes a pair of elastic pieces 27 and 27 having a mountain-shaped cross section, and connecting pieces 28 and 28 for connecting the ends of both elastic pieces 27 and 27 to each other. A contact portion 29 that contacts the negative electrode side end surface 5a of the flat battery is formed at the top.
[0018]
The connecting piece 28 is formed in an arc shape, and a part of the connecting piece 28 comes into contact with the bottom plate portion of the housing 21.
[0019]
The mounting portion 25 is formed in a U-shaped cross section having a pair of gripping pieces 30 a and 30 b, and the end of one gripping piece 30 a is connected to one connecting piece 28 of the elastic contact portion 24 via the connecting piece 31. Has been.
[0020]
In addition, press-fitting pieces 32 and 32 that are press-fitted into press-fitting grooves formed in the housing 21 are integrally formed on both side edges of the other holding piece 30b, and the thickened portion of the housing 21 is formed by both the holding pieces 30a and 30b. The end face side contact terminal 22 is fixed to the housing 21 by gripping and press-fitting the press-fitting piece 32 into a press-fitting groove formed in the housing 21.
[0021]
The connection portion 26 is formed in a flat plate shape, is formed continuously with the end portion of the gripping piece 30b of the attachment portion 25, and is connected to the pattern of the printed wiring board 10 via solder or the like. The entire battery holder 20 is mounted on the printed wiring board 10.
[0022]
As shown in FIG. 5, the peripheral surface side contact terminal 23 includes an elastic contact portion 33 that contacts the peripheral surface 5b of the flat battery, that is, the positive electrode, an attachment portion 34 that is fixed to the housing 21, and a printed circuit board. And a connection portion 35 connected to the pattern via solder or the like, and these are integrally formed by bending a conductive metal material.
[0023]
The attachment portion 35 is formed in a U-shaped cross section having a pair of gripping pieces 36a and 36b, and press-fitting pieces 37 and 37 that are press-fitted into press-fitting grooves formed in the housing 21 on both side edges of one gripping piece 36b. Are formed integrally, and the gripping pieces 36a and 36b are used to grip the thick portion of the housing 21, and the press-fitting pieces 37 and 37 are press-fitted into the press-fitting grooves of the housing 21, whereby the end face side contact terminals 23 are fitted into the housing 21 It is designed to be fixed.
[0024]
The elastic contact portion 33 includes a pair of elastic pieces 38 and 38 protruding from both side edges of the other gripping piece 36 a of the attachment portion 35, and a contact portion that contacts the peripheral surface 5 b of the flat battery at the tip of the elastic piece 38. 39 is formed.
[0025]
In addition, the elastic piece 38 is formed in an arc shape, and the gap between the inner surface of the peripheral wall portion of the housing 21 and the elastic piece 38 becomes wider toward the tip portion. The contact portion 39 at the tip is elastically in contact with the peripheral surface 5b of the flat battery.
[0026]
The connecting portion 35 is formed in a flat plate shape and is continuously formed at the end of the grip piece 36b of the mounting portion 35. By connecting the connecting portion 35 onto the pattern of the printed wiring board 10 via solder or the like. The entire battery holder 20 is mounted on the printed wiring board 10.
[0027]
The housing 21 is integrally formed with an insulating material such as a synthetic resin material, and includes a flat plate-shaped bottom plate portion 40 and a peripheral wall portion 41 having a shape raised from the periphery of the bottom plate portion 40, and the bottom plate portion 40 and the peripheral wall portion 41 have A battery accommodating portion 42 in which the flat battery 5 is accommodated is formed in the enclosed portion.
[0028]
An oblong holding groove 43 is formed on the inner side surface of the bottom plate portion 40, that is, the bottom surface of the battery housing portion 42, and the connecting piece 28 of the end surface side connection terminal 22 is slidably fitted into the holding groove 43. ing.
[0029]
By providing the holding groove 43, when the flat battery 5 is loaded in the battery housing portion 42 and the elastic pieces 27, 27 are pressed against the negative electrode side end face 5a, the mountain shape of the elastic piece 27 expands, When the connecting piece 28 slides along the holding groove 43 and slides to some extent, the connecting piece 28 comes into contact with the edge of the holding groove 43. The elastic piece 27 has both ends, that is, both connecting pieces 28 and 28 supported by the bottom plate portion 40 of the housing, and comes into contact with the flat battery 5 by a predetermined contact pressure.
[0030]
In addition, an escape recess 44 is formed in the central portion of the holding groove 43 by recessing the bottom surface of the holding groove 43. As shown in FIG. 6, the escape recess 44 is formed with a width in the length direction of the elastic piece 43, and even if the elastic piece 27 is pushed and deformed by the flat battery 5, the connecting piece Parts other than 28 do not come into contact with the housing bottom plate portion 40.
[0031]
A protrusion 45 for positioning the battery holder 20 with respect to the printed wiring board 10 is formed on the back surface of the bottom plate portion 40 in a positioning hole formed in the printed wiring board 10.
[0032]
Mounting portions 46 and 46 for mounting the end surface side contact terminals 22 and the peripheral surface side contact terminals 23 are formed on the peripheral wall portion 41 at positions facing each other.
[0033]
The mounting portion 46 has a gripping thick portion 47 that is gripped by gripping pieces of the end surface side contact terminal 22 and the peripheral surface side contact terminal 23, and a slit-like press fit that is continuous with one end surface of the gripping thick portion 47. A groove 48 is formed.
[0034]
Further, on both side portions of the housing 21, groove portions 49, 49 are provided from the bottom plate portion 40 to the peripheral wall portion 41, the variable elastic pieces 50 are formed between the groove portions 49, 49, and the peripheral wall portion. Grooves 51, 51 are provided at the upper end portion of 41, and a claw support portion 52 that is integrally supported by the variable elastic piece 50 is formed between the grooves 51, 51.
[0035]
The variable elastic piece 50 is formed integrally with a horizontal beam portion 50a that protrudes integrally from the bottom plate portion 40 in the horizontal direction and a vertical beam portion 50b that protrudes upward from the end of the horizontal beam portion 50a. The base end portion of the supported horizontal beam portion 50a can be elastically deformed from the base point.
[0036]
The nail support part 52 is formed in a shape along the outer periphery of the flat battery 5, and its circumferential length is as long as a finger is involved. Further, locking claws 53 and 53 are integrally protruded at the flat battery side of the claw support portion 52, that is, at both end portions of the inner surface.
[0037]
The locking claw 53 is formed in a thick tapered shape on the lower side, and the lower surface is in contact with the end surface 5c of the flat battery to prevent it from coming off.
[0038]
In order to load the flat battery 5 into the battery holder 20, one end surface of the flat battery 5, that is, the negative electrode surface 5 a is opposed to the bottom plate portion 40 of the housing 21, and the other end surface, that is, the positive electrode side end surface 5 c is used as it is. The flat battery 5 is pushed into the battery housing portion 42 while resisting the elasticity of the end face side contact terminals 22 by pushing.
[0039]
At this time, the peripheral surface 5b of the flat battery 5 comes into contact with the tapered surfaces of the locking claws 53 and 53, and the locking claw 53 and the claw support portion 52 are pushed in the radial direction against the elasticity of the variable elastic piece 50. .
[0040]
As shown in FIG. 3, when the flat battery 5 is accommodated in the battery accommodating portion 42, the locking claw 53 and the claw support portion 52 are restored to their original positions by the elasticity of the variable elastic piece 50, and the flat battery 5 is flattened. When the battery 5 is biased by the elastic force of the elastic pieces 27 and 27 of the end face side contact terminal 22, that is, the elastic contact portion 24, the positive electrode side end face 5c of the flat battery is formed on the lower surface of the locking claws 53 and 53. Comes into contact with and is prevented from coming off, and the battery holder 20 is loaded with a flat battery.
[0041]
On the other hand, in order to remove the flat battery 5 from the battery holder 20, the fingernail is applied to the nail support 52 and lightly spread in the radial direction, whereby the locking claw 53 comes off from the positive electrode side end face 5c and the flat battery is removed. 5 is pushed out by the elastic force of the end face side contact terminal 22.
[0042]
In the above-described embodiment, an example in which the connecting pieces 28 and 28 of the end face side contact terminal are formed in an arc shape has been described, but the connecting piece may be formed in a straight band shape. That is, in the above-described embodiment, the elastic contact portion 24 is formed in an annular shape, but the elastic contact portion may be formed in a quadrangular shape.
[0043]
In addition to the above-described embodiment, the variable elastic piece 61 may be formed by forming the groove 60 in the circumferential direction of the peripheral wall portion 41 of the housing, as shown in FIG. In this case, the end portion of the variable elastic piece 61 forms a claw support portion.
[0044]
【The invention's effect】
As described above, in the battery holder according to the present invention, the elastic contact portion includes a pair of elastic pieces having a mountain-shaped cross section having a contact portion that contacts one end surface of the flat battery, and both end portions of both elastic pieces. The connecting pieces are connected to each other so that both connecting pieces are in contact with the bottom plate portion of the housing, whereby the elastic piece has a two-point support structure, and the end surface side contact terminal is on one end surface of the flat battery. On the other hand, it always comes in contact with a stable contact pressure.
[0045]
Moreover, since the tip part of the elastic contact portion has a structure in which the end portions of the elastic piece are connected by the connecting piece, the elastic contact portion can be suitably prevented from being deformed by being hooked, and the connecting piece has an arc shape. This makes it even more difficult to get caught.
[0046]
Furthermore, since both ends of the elastic piece are connected by connecting pieces, both elastic pieces are in contact with the flat battery in a well-balanced manner and are in contact with a stable contact pressure, and the entire flat battery is well-balanced upward. Energize to. Therefore, when the nail support portion is pushed out, the flat battery can be suitably pushed out and easily removed.
[0047]
The housing includes a holding groove in which the connecting piece of the end surface side contact terminal is slidably fitted into the bottom plate portion, so that the tip of the elastic contact portion, that is, the connecting piece can be slid without being caught. A stable contact pressure can be obtained by contacting the edge of the holding groove.
[0048]
Since the holding groove is provided with a relief recess at the center, even if the contact terminal is deformed, a portion other than the connecting piece does not contact the housing.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of implementation of a battery holder according to the present invention.
FIG. 2 is a sectional view taken along line AA of the above.
FIG. 3 is a cross-sectional view showing a state in which the flat battery is accommodated.
4A is a plan view showing an end face side connection terminal in FIG. 1, and FIG. 4B is a front view of the same.
5A is a plan view showing the peripheral surface side contact terminal of the above, and FIG. 5B is a front view of the same.
6A is a plan view showing the housing in FIG. 1, FIG. 6B is a side view thereof, and FIG. 6C is a bottom view thereof.
7 is a partially cutaway perspective view showing the housing in FIG. 6. FIG.
FIG. 8 is a partially broken perspective view showing another example of the housing.
FIG. 9 is a perspective view showing an example of a conventional battery holder.
FIG. 10A is a perspective view of a flat battery as viewed from above, and FIG. 10B is a perspective view of the battery as viewed from below.
[Explanation of symbols]
20 battery holder 21 housing 22 end surface side contact terminal 23 peripheral surface side contact terminal 24 elastic contact portion 25 attachment portion 26 connection portion 27 elastic piece 28 connection piece 29 contact portion 30 gripping piece 31 connection piece 32 press fit piece 33 elastic contact portion 34 attachment Part 35 connecting part 36 gripping piece 37 press-fitting piece 38 elastic piece 39 contact part 40 bottom plate part 41 peripheral wall part 42 battery housing part 43 holding groove 44 relief recess 45 protrusion 46 attachment part 47 thick part for gripping 48 press-fitting groove 49 notch part 50 variable elastic piece 50a horizontal beam part 50b vertical beam part 51 notch 52 claw support part 53 locking claw 60 groove 61 variable elastic piece

Claims (1)

平板状の底版部と、該底版部の周縁に立ち上げた周壁とを有し、内部に扁平型電池を着脱可能に収容するハウジングと、該ハウジングの底版部より突出して前記扁平型電池の一方の端面に弾性的に接触する弾性接触部を有する端面側接触端子とを備えた電池ホルダにおいて、
弾性接触部は、前記扁平型電池の一方の端面に接触する接触部を有する断面山型形状の一対の弾性片と、該両弾性片の両端部を互いに連結する連結片とを一体に備え、該両連結片がそれぞれ前記ハウジングの底版部に接触するようにし、
該ハウジングは、底版部に端面側接触端子の連結片がスライド自在に嵌り込む保持用溝を備え、
該保持用溝にはその底面を、弾性片の長さ方向に幅を持たせて窪ませ、前記弾性片が扁平電池によって押し込まれて変形しても、前記連結片以外の部分がハウジング底版部に接触しないようにした逃げ用凹部が形成されていることを特徴としてなる電池ホルダ。
A housing having a flat bottom plate portion and a peripheral wall raised at the peripheral edge of the bottom plate portion, in which a flat battery is detachably accommodated, and one of the flat batteries protruding from the bottom plate portion of the housing; A battery holder comprising an end face side contact terminal having an elastic contact portion that elastically contacts the end face of
The elastic contact portion integrally includes a pair of mountain-shaped elastic pieces having a contact portion that comes into contact with one end face of the flat battery, and a connecting piece that connects both ends of both elastic pieces, The connecting pieces are in contact with the bottom plate of the housing,
The housing includes a holding groove into which the connecting piece of the end surface side contact terminal is slidably fitted in the bottom plate portion,
The bottom surface of the holding groove is recessed with a width in the length direction of the elastic piece, and even if the elastic piece is pushed and deformed by a flat battery, the portion other than the connecting piece remains in the housing bottom plate portion. battery holder comprising characterized by relief recesses which was not in contact is formed on.
JP2003035186A 2003-02-13 2003-02-13 Battery holder Expired - Fee Related JP4292537B2 (en)

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JP4292537B2 true JP4292537B2 (en) 2009-07-08

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