JP3885746B2 - Memory card adapter - Google Patents

Memory card adapter Download PDF

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Publication number
JP3885746B2
JP3885746B2 JP2003064059A JP2003064059A JP3885746B2 JP 3885746 B2 JP3885746 B2 JP 3885746B2 JP 2003064059 A JP2003064059 A JP 2003064059A JP 2003064059 A JP2003064059 A JP 2003064059A JP 3885746 B2 JP3885746 B2 JP 3885746B2
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JP
Japan
Prior art keywords
memory card
card
cover
contact
base
Prior art date
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Expired - Fee Related
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JP2003064059A
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Japanese (ja)
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JP2004272704A (en
Inventor
利弘 山本
博久 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2003064059A priority Critical patent/JP3885746B2/en
Priority to US10/531,457 priority patent/US7094106B2/en
Priority to CNB2004800011636A priority patent/CN100361143C/en
Priority to KR1020057007107A priority patent/KR100682570B1/en
Priority to PCT/JP2004/003028 priority patent/WO2004081858A1/en
Priority to TW093106282A priority patent/TWI253591B/en
Publication of JP2004272704A publication Critical patent/JP2004272704A/en
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Publication of JP3885746B2 publication Critical patent/JP3885746B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、小型メモリカードを一回り大きな大型メモリカード用のソケットに接続するためのメモリカード用アダプタに関するものである。
【0002】
【従来の技術】
従来より、図21に示すようなSDメモリカードやマルチメディアカード(MMC)のようなメモリカードMCが提供されている。
【0003】
このメモリカードMCは外周形状が矩形状になっており、メモリカードMCの後部(挿入側)の裏面側には複数個のI/O接触面(図示せず)が並設されている。またメモリカードMCの後部の一方の角を落として切欠部61を形成するとともに、裏面部の両側部には、表面側の幅よりも裏面側の幅を狭くした段部62,62を形成してあり、切欠部61と段部62とでメモリカードMCを挿抜自在に接続するソケットへの逆差しを防止している。
【0004】
メモリカードMCにおいて切欠部61を形成した一方の側縁には矩形状に陥没したロック用切欠63が設けられており、メモリカードMCをソケットに接続した際にソケットのロック片がロック用切欠63と係止することによって、メモリカードMCの脱落を防止するようになっている。またメモリカードMCにおいて切欠部61を形成した側と反対側の側面には、ライトプロテクトのスイッチSWの摘み64が露出する凹部65を設けており、スイッチSWの摘み64の凹部65内の移動位置によって、ライトプロテクト状態にあるか否かを示すようになっている。
【0005】
ところで、近年メモリカードMCを使用するPDAなどの機器の小型化に伴ってSDメモリカードの小型化が望まれており、図22及び図23に示すような構造を有しSDメモリカードの外形を一回り小さくしたミニSDカードMSDが提案されている。
【0006】
ミニSDカードMSDは扁平な略矩形板状であって、SDメモリカードに比べて外形が一回り小さくなっており、後部(挿入側)の一方の角には切欠部51が形成されている。また、ミニSDカードMSDの後部下面には凹所52が形成され、この凹所52には複数(ミニSDカードMSDの場合は11個)のI/O接触面53が並行に配設されている。また、ミニSDカードMSDの挿入側の左右両側縁には上向き段部54,54を形成してあり、上記切欠部51よりも前側(挿入側と反対側)の位置には上面の左右両側縁にロック用凹所55,55を形成している。
【0007】
このようなミニSDカードMSDは従来のメモリカードMCに比べて外形が一回り小さいので、従来のメモリカードMC用のソケットにミニSDカードMSDを接続するためには、ミニSDカードMSDを保持してメモリカードMC用のソケットに接続され、ミニSDカードMSDとソケットとの間を電気的に接続するメモリカード用アダプタが必要となる。なお、この種のメモリカード用アダプタとしては、例えば特許文献1に示されるようにPCカードを装着して、フレキシブルディスクのドライブ装置に接続するためのものが従来より提供されている。
【0008】
【特許文献1】
特開平11−3405号公報(第3頁−第5頁、及び、第2図)
【0009】
【発明が解決しようとする課題】
ところで、ミニSDカードMSDをメモリカードMC用のソケットに接続するためのメモリカード用アダプタでは、ミニSDカードMSDを収容するケースを樹脂製のベースとカバーとを結合して形成しているが、小型で薄いSDメモリカードやマルチメディアカード(MMC)のようなメモリカードMCに対応した寸法でケースを形成しているため、ベース及びカバーの厚みを薄くしなければならず、ケースの剛性が低下するという問題があった。またベース及びカバーが樹脂製のため耐ノイズ性が低いという問題もあった。
【0010】
本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、コストアップを招くことなく剛性を高めたメモリカード用アダプタを提供することにある。また請求項3の発明の目的とするところは、上記の目的に加えて耐ノイズ性を向上させたメモリカード用アダプタを提供することにある。
【0011】
【課題を解決するための手段】
上記目的を達成するために、請求項1の発明では、扁平な略矩形板状であってソケットへの挿入側には一面に複数のI/O接触面が並行に配設されたメモリカードを装着して、前記メモリカードよりも外形が大きい大型メモリカード用のソケットに前記メモリカードを電気的且つ機械的に接続するためのメモリカード用アダプタであって、大型メモリカードと縦、横、厚みの各寸法が同じ寸法に形成され、ソケットへの挿入側には厚み方向の一面に複数の端子片が大型メモリカードと同じ端子配列で並べて配置され、ソケットへの挿入方向と反対側の側面の略全体に開口するカード挿入口を通してメモリカードが挿抜されるカード収納室を内部に設けた箱状のアダプタ本体と、カード挿入口を通してカード収納室に挿入されるメモリカードの複数のI/O接触面にそれぞれ対向配置されて各I/O接触面と弾接する複数の接触ばね片と複数の前記端子片とがそれぞれ一体に形成された複数の導電部材とを備え、前記アダプタ本体を、メモリカードのI/O接触面が形成された一面に対向配置され、各I/O接触面と対向する面に各I/O接触面に対向して各接触ばね片が配列されるとともに、反対側の面に大型メモリカードと同じ端子配列で端子片が配列された樹脂製のベースと、カード収納室に挿入されたメモリカードと厚み方向において重なる位置に開口部を形成することによって平面視の形状がコ字形に形成され、ベースにおけるメモリカード側の面であってカード収納室の周りの部位に重ねて被着される樹脂製のカバーと、カバーとは別体に形成されてカバーの開口部に取着される金属シェルとで構成し、前記複数の導電部材の内、接地用の導電部材と電気的に接続される接続端子を金属シェルと一体に形成したことを特徴とする。
【0012】
請求項2の発明では、請求項1の発明において、金属シェルと一体に、ベースとカバーとの間で挟持される固定片を形成するとともに、当該固定片が挿入される凹溝をベースに形成し、凹溝内に固定片を挿入した状態でベースとカバーとを接合することを特徴とする。
【0014】
請求項の発明では、請求項1の発明において、メモリカードの両側面に設けられたロック用凹部とそれぞれ係止する係止ばね片を金属シェルと一体に形成したことを特徴とする。
【0015】
【発明の実施の形態】
本発明に係るメモリカード用アダプタの一実施形態を図1〜図20に基づいて説明する。尚、以下の説明では特に断りが無い場合、図2における矢印a−b方向を上下方向、矢印c−d方向を左右方向、矢印e−f方向を前後方向として説明を行う。
【0016】
本実施形態のメモリカード用アダプタAは、図22及び図23に示すミニSDカードMSDをSDメモリカード用のソケットに接続するために用いられるもので、ミニSDカードMSDのI/O接触面が形成された一面と対向配置される樹脂製のベース2と、ミニSDカードMSDの他面と対向する部位に開口部1dが形成され、ベース2におけるミニSDカードMSD側の面に被着される樹脂製のカバー1と、カバー1の開口部1dに取着される金属シェル3と、導電部材としての複数本(ミニSDカードの場合は例えば9本)のコンタクト4〜4と、ライトプロテクト用の摘み7とで構成される。カバー1とベース2とは、金属シェル3とコンタクト4〜4と摘み7とを間に挟んだ状態で接合され、前側の側面にはミニSDカードMSDを挿入するためのカード挿入口40が開口し、カード挿入口40に連通してミニSDカードMSDを収納するカード収納室10が設けられている。なお、カバー1とベース2と金属シェル3とで構成されるアダプタ本体はSDメモリカードと縦、横、厚みの各寸法が同じ寸法に形成されている。
【0017】
カバー1は合成樹脂成型品からなり、略矩形状の主部1aの前端部の左右両側からそれぞれ脚部1b,1cが前方に向かって突出しており、主部1aと脚部1b,1cとで平面視の形状がコ字形に形成されている。
【0018】
カバー1の主部1aの後部(図7の上側)には一方の角を落として切欠部5aを形成してある。カバー1において切欠部5aを形成した側の脚部1bの外側縁には矩形状に陥没した切欠6aが設けられ、切欠部5aを形成した側と反対側の脚部1cの外側縁にはライトプロテクト用の摘み7が露出する切欠部8aが設けられている。またカバー1の下面には切欠部8aに連通する矩形状の摘み収納凹部33が形成されており、摘み収納凹部33の奥には前後方向に沿って延びる凹溝34が形成されている。またカバー1の両脚部1a,1bの対向面には、それぞれ、前後方向における中間部に後述する金属カバー3の弾接ばね片44a,44bが配設される凹部11a,11bが設けられ、凹部11a,11bの上側縁には内側に向かって突出する突条11c,11dが一体に形成されている。なお突条11c,11dはそれぞれ前後方向に沿って延びており、弾接ばね片44a,44bがカバー1の上側に突出するのを防止している。
【0019】
またカバー1の主部1aには、ベース2との対向面の後部に平面視の形状が矩形状に形成された複数(本実施形態では例えば9個)の端子片支持台14が左右方向に並べて並設され、またベース2との対向面の前縁には左右方向に沿って延びるコンタクト受け台13がベース2側に向かって突設されている。このコンタクト受け台13には、後述する金属シェル3の連結片45a,45bに対応する部位に切欠溝13a,13aが形成され、各切欠溝13a,13aは対応する端子片支持台14,14の後端まで延びている。またコンタクト受け台13の左右両側には、後述する金属シェル3の固定片43,43に対向する部位に、それぞれ固定片43,43が嵌合する凹溝27,27がそれぞれ形成されている。
【0020】
一方、ベース2は合成樹脂成型品からなり、平面視の形状が略矩形状に形成されており、カバー1の切欠部5aに対応する角を落として切欠部5aとともに逆差し防止用切欠5を構成する切欠部5bが形成され、裏面(カバー1との対向面と反対側の面)の左右両側縁には表面側の幅よりも裏面側の幅を狭くした下向き段部18,18が形成されている。ベース2において切欠部5bを形成した一方の側縁には、カバー1の切欠6aに対応する部位に切欠6aと共にロック用切欠6を構成する矩形状に陥没した切欠6bが設けられ、切欠部5bを形成した側と反対側の側縁には摘み7が露出する切欠部8bが設けられている。
【0021】
ベース2の上面には、切欠部8bに連通する矩形状の摘み収納凹部35が形成され、摘み収納凹部35の奥には前後方向に沿って延びる凹溝36が形成されており、凹溝36底面の前後方向における中間部には上方に向かって係止突起37が突設されている。
【0022】
またベース2の上面には前方に開放された収納凹部10aが形成され、この収納凹部10aとカバー1の両脚部1a,1b間の空間(開口部1d)とでカード収納室10が構成される。収納凹部10aの底面にはミニSDカードMSDの挿抜方向に沿って収納凹部10aの中間部から後端まで延びる幅細の複数本(例えば9本)の溝16が左右方向に並べて形成され、底面の前側略中央にはミニSDカードMSDを抜き差しする際に手が入り込む凹部9を形成してある。また収納凹部10aの底面には、後述する金属シェル3の連結片45a,45bに対向する部位に連結片45a,45bと当接する突台28,28がそれぞれ突設され、金属シェル3の固定片43,43に対向する部位に固定片43,43と当接する突台29,29が突設されている。
【0023】
収納凹部10aの左右両側の脚部2a,2bの内、切欠部8b側の脚部2bの内側面は後側の部位が他の部位よりも脚部2a側に張り出しており、この張出部2dに沿うように金属シェル3と当接するL字形の支持壁31がベース2と一体に突設されている。なお支持壁31の前端面には、ミニSDカードMSDの切欠部51の傾斜面に当接する傾斜面31aが形成されている。また両脚部2a,2bには金属シェル3の固定片42,42に対向する部位に、それぞれ固定片42,42が嵌合する凹溝2c,2cが形成されている。
【0024】
またベース2の後部には、カバー1に設けた端子片支持台14に対向する部位に、ベース2の表裏を貫通する矩形状の貫通孔17が左右方向に並べて形成され、各貫通孔17の前側の端面には貫通孔17に連通する幅狭の圧入溝19が形成されており、ベース2の下面における各貫通孔17の周縁部には、後面側に開放された複数の凹溝32が形成されている。ここに、貫通孔17及び端子片支持台14の配列はSDメモリカードの端子配列と同じ配列になっている。
【0025】
9本のコンタクト4〜4は、図18及び図19に示すように、導電性の良好な金属(例えばリン青銅など)のフープ材20に抜き加工及び曲げ加工を施すことによって、一体に連結された状態で形成される。なおコンタクト4〜4は、下面側から見て9番ピンのコンタクト4が左端に配置され、9番ピンのコンタクト4の右側に1番ピンから8番ピンまでのコンタクト4〜4が順番に配置されている。
【0026】
各コンタクト4〜4は、矩形板状の端子片21と、端子片21の前端部略中央から一体に連設される幅狭の固定片22と、一端部が固定片22を介して端子片21に連結された中央片23と、中央片23の他端部から下向きに折り曲げられた折曲片24と、折曲片24の先端から前方に向かって突出する接触ばね片25とを連続一体に形成して構成される。各接触ばね片25の側面視の形状は、中間部が両端部に比べてカバー1側に向かって突出するような形状(例えばへ字状)に形成されている。そして隣接するコンタクト4〜4の間は中央片23における固定片22との連結部位の側方から連続一体に延設されたコ字形の連結片26を介して連結され、各連結片26は幅狭の繋ぎ片20bを介して短冊状のキャリア部20aに連結されている。また両端に位置するコンタクト4,4は中央片23に一端が連結されたL字状の繋ぎ片20cを介してキャリア部20aに連結されている。なお各端子片21の後端部は上側に向かって斜めに折り曲げられており、各繋ぎ片20b,20cの中間部も各端子片21の後端部と略同じ角度で略Z字状に折曲されている。
【0027】
金属シェル3は、金属の薄板に抜き加工及び曲げ加工を施すことによって形成され、矩形板状の主部41と、主部41の前部の左右両側縁からそれぞれ下向きに突出する断面L字形の固定片42,42と、主部41の後縁から下向きに突出する側部47と、側部47の下側縁の左右両側部からそれぞれ後方に向かって突出する固定片43,43と、側片47の下側縁における3番ピンと6番ピン(下面側から見て左から4番目と7番目)のコンタクト4,4に対応する部位から後方に突出する連結片45a,45bと、各連結片45a,45bの後端縁から後方に突出しコンタクト4,4の端子片21と端子片支持台14との間に配置される矩形板状の端子片46a,46bと、を連続一体に形成してある。なお端子片46a,46bの後端部は、コンタクト4,4の端子片21と同様に、上側に向かって斜めに折り曲げられている。また各固定片42,42の縦片の後縁からはそれぞれ後方に突出する弾接ばね片44a,44bが連続一体に形成されており、各弾接ばね片44a,44bの平面視の形状は、中間部が両端部に比べて対向する弾接ばね片44b,44aに近付く向きに突出するような形状(例えばへ字状)に形成されている。
【0028】
またライトプロテクト用の摘み7は合成樹脂成型品からなり、略直方体状の操作部7aと、操作部7aの一側面の上部から側方に突出する断面T字形の係止片7bとで構成される。摘み7は、係止片7bの先端から上下に突出する爪7c,7cをカバー1及びベース2の凹溝34,36内に挿入した状態で摘み収納凹部33,35内に配置され、操作部7aは切欠部8a,8b内に露出する。そして摘み7は、爪7c,7cが凹溝34,36内を移動することによって前後方向に移動可能となっており、爪7c,7cの前後の側面が係止突起37と係止することにより、切欠部8a,8b内で前端又は後端の切替位置に保持されるようになっており、摘み7の位置によってライトプロテクトの状態にあるか否かが切り替えられる。
【0029】
このような本実施形態のメモリカード用アダプタAを組み立てるに当たっては、先ず図20に示すようにキャリア部20aに繋ぎ片20b,20cを介して連結されたコンタクト4〜4を、端子片21が貫通孔17内に挿入されるとともに、接触ばね片25が溝16内に配置されるようにして、上方からベース2に圧入すると、各コンタクト4〜4の固定片22が圧入溝19内に圧入されるなどしてベース2に仮固定される。この時、各コンタクト4〜4の中央片23とキャリア部20aとを繋ぐ繋ぎ片20b,20cはベース2に設けた溝39内に挿入されており、この状態でキャリア部20aを起こして、各コンタクト4〜4の中央片23に対して繋ぎ片20b,20cを斜め上側に折り曲げると、中央片23と繋ぎ片20bとの連結部位、及び、中央片23と繋ぎ片20cとの連結部位がそれぞれ切断され(ノッチ折り)、各コンタクト4〜4からキャリア部20aが分離される。すなわち、各コンタクト4〜4は個々の部品に分離され、各コンタクト4〜4の間は電気的に絶縁される(図5参照)。
【0030】
その後ベース2の摘み収納凹部35内に摘み7を組み込むとともに、ベース2の上側の所定位置に金属シェル3を載置した状態で、カバー1をベース2の上側から被せて、カバー1とベース2とを接合することで組立が完了する。なおカバー1とベース2とは、超音波溶着、熱着、接着、かしめなどの適宜の方法を用いて接合すれば良い。また本実施形態では固定片22を圧入溝19内に圧入するなどしてベース2に仮固定した状態で、繋ぎ片20b,20cを折り曲げて、各コンタクト4〜4の中央片23と繋ぎ片20b又は繋ぎ片20cとの連結部位を切断して分離した後、ベース2にカバー1を被着してベース2とカバー1との間でコンタクト4〜4を挟持しているが、各コンタクト4〜4をベース2上に載置し、治具などで各コンタクト4〜4を押さえた状態で繋ぎ片20b,20cを折り曲げて、各コンタクト4〜4の中央片23と繋ぎ片20b又は繋ぎ片20cとの連結部位を切断して分離した後、ベース2にカバー1を被着してベース2とカバー1との間でコンタクト4〜4を挟持しても良い。
【0031】
組立完了状態においては、各コンタクト4〜4の端子片21がカバー1の端子片支持台14に直接又は端子片46a,46bを介して当接しており、端子片21の後端の折曲部は、端子片支持台14又は端子片46a,46bの後面に設けた傾斜面に当接して、ベース2の貫通孔17の周縁部と端子片支持台14の傾斜面との間で挟持されている。また金属シェル3は、主部41がカバー1の支持壁31の先端面に当接した状態で、固定片42,42がカバー1の脚部1b,1cとベース2の脚部2a,2bに設けた凹溝2c,2cとの間で挟持され、固定片43,43がカバー1の凹溝27,27とベース2の突台29,29との間で挟持されるとともに、連結片45a,45bの基部がカバー1の切欠溝13a,13aとベース2の突台28,28との間で挟持されることによって、カバー1とベース2との間で挟持されている。而してアダプタ本体の一部を金属製の金属シェル3で構成し、この金属シェル3をカバー1の開口部1dに嵌め込むことによってアダプタ本体を補強しているので、その剛性を高めることができ、さらに金属シェル3はカバー1及びベース2と別体であり、カバー1とベース2との間で挟持されているので、金属シェル3を樹脂製のカバー1と共に同時成形する場合に比べて製造コストを低減でき、メモリカード用アダプタAのコストダウンが図れる。なお本実施形態では、ミニSDカードのI/O接触面が形成された面と反対側の面に対向するカバーの部位の略全体に開口部1dを形成しているが、ミニSDカードと対向する部位の少なくとも一部に開口部を形成して、この開口部に金属シェル3を嵌め込むようにしても良い。
【0032】
また金属シェル3の端子片46a,46bはグランド(SDメモリカードの場合は3番ピンと6番ピン)のコンタクト4,4の端子片21に当接し、ソケットに装着した際にコンタクト4,4の端子片21を介してソケット側のグランドのコンタクトに接続されるので、端子片46a,46bを介して金属シェル3が接地されるから、アダプタ本体のシールド性能を向上することができる。
【0033】
以上にようにして組み立てられたメモリカード用アダプタAにミニSDカードMSDを挿着する際には、ミニSDカードMSDを前後方向及び表裏方向を正規な方向に向けてカード挿入口40からカード収納室10の内部に挿入すると、ミニSDカードMSDがカバー1及びベース2の脚部1b,2aと脚部1c,2bとの間に挿入される。そしてミニSDカードMSDをカード収納室10の内部にさらに挿入すると、カード収納室10内に並行配設される接触ばね片25がミニSDカードMSDの裏面に設けたI/O接触面53に摺接して、接触ばね片25がI/O接触面53に電気的に接続される。さらにミニSDカードMSDをカード収納室10の内部に挿入すると、ミニSDカードMSDの切欠部51が支持壁31の傾斜面31aに当接して、ミニSDカードMSDのそれ以上の挿入が規制されるとともに、金属シェル3に一体に設けた弾接ばね片44a,44bの中間部に設けた係止凸部44c,44cがミニSDカードMSDのロック用凹所55,55に係止することによって、ミニSDカードMSDの脱落が防止される。
【0034】
また、メモリカード用アダプタAに挿着されたミニSDカードMSDを取り外す際には、アダプタ本体から露出するミニSDカードMSDの前端部を把持し、弾接ばね片44a,44bのばね力に抗してミニSDカードMSDを前方に引き抜くと、弾接ばね片44a,44bの係止凸部44c,44cとロック用凹所55,55との係止状態が解除されて、ミニSDカードMSDをメモリカード用アダプタAから容易に取り外すことができる。
【0035】
このように本実施形態では金属シェル3と一体に、ミニSDカードMSDのロック用凹所55,55と係止する弾接ばね片44a,44b(係止ばね片)を形成しているので、アダプタ本体にミニSDカードMSDを挿入した際に弾接ばね片44a,44bがロック用凹部55,55と係止することで、ミニSDカードMSDの抜け止めを行うことができ、さらに弾接ばね片44a,44bを金属シェル3と一体に形成しているので、弾接ばね片44a,44bを別部材とした場合に比べて部品点数を削減でき、メモリカード用アダプタのコストダウンが図れる。
【0036】
【発明の効果】
上述のように、請求項1の発明は、扁平な略矩形板状であってソケットへの挿入側には一面に複数のI/O接触面が並行に配設されたメモリカードを装着して、前記メモリカードよりも外形が大きい大型メモリカード用のソケットに前記メモリカードを電気的且つ機械的に接続するためのメモリカード用アダプタであって、大型メモリカードと縦、横、厚みの各寸法が同じ寸法に形成され、ソケットへの挿入側には厚み方向の一面に複数の端子片が大型メモリカードと同じ端子配列で並べて配置され、ソケットへの挿入方向と反対側の側面の略全体に開口するカード挿入口を通してメモリカードが挿抜されるカード収納室を内部に設けた箱状のアダプタ本体と、カード挿入口を通してカード収納室に挿入されるメモリカードの複数のI/O接触面にそれぞれ対向配置されて各I/O接触面と弾接する複数の接触ばね片と複数の前記端子片とがそれぞれ一体に形成された複数の導電部材とを備え、前記アダプタ本体を、メモリカードのI/O接触面が形成された一面に対向配置され、各I/O接触面と対向する面に各I/O接触面に対向して各接触ばね片が配列されるとともに、反対側の面に大型メモリカードと同じ端子配列で端子片が配列された樹脂製のベースと、カード収納室に挿入されたメモリカードと厚み方向において重なる位置に開口部を形成することによって平面視の形状がコ字形に形成され、ベースにおけるメモリカード側の面であってカード収納室の周りの部位に重ねて被着される樹脂製のカバーと、カバーとは別体に形成されてカバーの開口部に取着される金属シェルとで構成し、前記複数の導電部材の内、接地用の導電部材と電気的に接続される接続端子を金属シェルと一体に形成したことを特徴とし、メモリカードの他面と対向するカバーの部位の少なくとも一部に開口部を形成して、この開口部に金属シェルを取着しているので、アダプタ本体の一部に金属製の金属シェルを使用することで、アダプタ本体を補強して、その剛性を高めることができ、さらに金属ベースを樹脂製のベース及びカバーと別体に形成しているので、金属部品を樹脂製のベースやカバーと共に同時成形する場合に比べて製造コストを低減でき、メモリカード用アダプタのコストダウンが図れるという効果がある。さらに、ソケットに装着した際に接地用の導電部材がグランドのI/O接触面に接続されると、接続端子を介して金属シェルが接地されるから、アダプタ本体のシールド性能が向上するという効果がある。
【0037】
請求項2の発明は、請求項1の発明において、金属シェルと一体に、ベースとカバーとの間で挟持される固定片を形成するとともに、当該固定片が挿入される凹溝をベースに形成し、凹溝内に固定片を挿入した状態でベースとカバーとを接合したことを特徴とし、ベースとカバーとを接合すると、ベースとカバーとの間で固定片が挟持されることで、金属シェルがベース及びカバーに対して固定されるので、請求項1の発明と同様に、金属シェルを樹脂製のカバーと共に同時成形する場合に比べて製造コストを低減でき、メモリカード用アダプタのコストダウンが図れるという効果がある。
【0039】
請求項の発明は、請求項1の発明において、メモリカードの両側面に設けられたロック用凹部とそれぞれ係止する係止ばね片を金属シェルと一体に形成したことを特徴とし、アダプタ本体にメモリカードを挿入した際に係止ばね片がロック用凹部と係止することで、メモリカードの抜け止めを行うことができ、さらに係止ばね片を金属シェルと一体に形成しているので、係止ばね片を別部材とした場合に比べて部品点数を削減でき、メモリカード用アダプタのコストダウンが図れるという効果がある。
【図面の簡単な説明】
【図1】本実施形態のメモリカード用アダプタの分解斜視図である。
【図2】同上の外観斜視図である。
【図3】同上を示し、図5のX−X断面図である。
【図4】同上のカバーとベースとを接合する前の状態を側方から見た断面図である。
【図5】同上のベースにコンタクトを組み込んだ状態を上方から見た図である。
【図6】同上のカバーに金属シェルを組み込んだ状態を示し、(a)は下側から見た図、(b)は前側から見た図である。
【図7】同上のカバーの上面図である。
【図8】同上のカバーを示し、(a)は下面図、(b)は後側から見た図である。
【図9】同上のカバーを示し、(a)はA−A断面図、(b)はB−B断面図、(c)はC−C断面図、(d)はD−D断面図である。
【図10】同上のカバーを示し、(a)はE−E断面図、(b)はF−F断面図である。
【図11】同上のカバーを下側から見た外観斜視図である。
【図12】同上のボディを示し、(a)は上側から見た図、(b)はN−N断面図である。
【図13】同上のボディを示し、(a)は下側から見た図、(b)は後側から見た図である。
【図14】同上のボディを示し、(a)はG−G断面図、(b)はH−H断面図、(c)はI−I断面図、(d)はJ−J断面図である。
【図15】同上のボディを示し、(a)はK−K断面図、(b)はL−L断面図、(c)はM−M断面図である。
【図16】同上の金属シェルを示し、(a)は上側から見た図、(b)は右側面図、(c)は前側から見た図である。
【図17】同上の金属シェルを下側から見た図である。
【図18】同上のコンタクトをフープ材から分離する前の状態の外観斜視図である。
【図19】同上のコンタクトをフープ材から分離した状態の外観斜視図である。
【図20】同上の製造過程を説明する図である。
【図21】SDメモリカードの外観斜視図である。
【図22】本実施形態に装着されるミニSDカードを示し、(a)は正面図、(b)は右側から見た側面図、(c)は下面図である。
【図23】同上のミニSDカードを示し、(a)は背面図、(b)は上面図である。
【符号の説明】
1 カバー
1d 開口部
2 ベース
3 金属シェル
〜4 コンタクト
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a memory card adapter for connecting a small memory card to a socket for a larger large memory card.
[0002]
[Prior art]
Conventionally, a memory card MC such as an SD memory card or a multimedia card (MMC) as shown in FIG. 21 has been provided.
[0003]
The memory card MC has a rectangular outer peripheral shape, and a plurality of I / O contact surfaces (not shown) are arranged in parallel on the back side of the rear portion (insertion side) of the memory card MC. In addition, a notch 61 is formed by dropping one corner of the rear portion of the memory card MC, and step portions 62 and 62 having a width on the back surface side narrower than a width on the front surface side are formed on both sides of the back surface portion. The notch portion 61 and the stepped portion 62 prevent the memory card MC from being inserted back into the socket that is detachably connected.
[0004]
One side edge of the memory card MC in which the notch 61 is formed is provided with a lock notch 63 that is recessed in a rectangular shape, and when the memory card MC is connected to the socket, the lock piece of the socket is the lock notch 63. And the memory card MC is prevented from falling off. Further, on the side of the memory card MC opposite to the side on which the notch 61 is formed, a recess 65 is provided in which the knob 64 of the write protection switch SW is exposed. Indicates whether or not it is in a write protect state.
[0005]
By the way, in recent years, with the miniaturization of devices such as PDAs using the memory card MC, it has been desired to reduce the size of the SD memory card. The external shape of the SD memory card having the structure shown in FIGS. A mini SD card MSD that is slightly smaller has been proposed.
[0006]
The mini SD card MSD has a flat and substantially rectangular plate shape, and its outer shape is slightly smaller than that of the SD memory card, and a notch 51 is formed at one corner of the rear portion (insertion side). Further, a recess 52 is formed in the lower surface of the rear portion of the mini SD card MSD, and a plurality of (11 in the case of the mini SD card MSD) I / O contact surfaces 53 are arranged in parallel in the recess 52. Yes. Further, upward stepped portions 54, 54 are formed on the left and right side edges on the insertion side of the mini-SD card MSD, and the left and right side edges of the upper surface are located on the front side (opposite side to the insertion side) of the notch 51. Are formed with locking recesses 55, 55.
[0007]
Since such a mini SD card MSD is slightly smaller in outer shape than the conventional memory card MC, in order to connect the mini SD card MSD to the socket for the conventional memory card MC, the mini SD card MSD is held. Therefore, a memory card adapter that is connected to the socket for the memory card MC and electrically connects the mini SD card MSD and the socket is required. As this type of memory card adapter, for example, as shown in Japanese Patent Application Laid-Open No. H10-133707, a PC card is mounted and connected to a flexible disk drive device.
[0008]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-3405 (pages 3 to 5 and FIG. 2)
[0009]
[Problems to be solved by the invention]
By the way, in the memory card adapter for connecting the mini SD card MSD to the socket for the memory card MC, a case for housing the mini SD card MSD is formed by combining a resin base and a cover. Since the case is formed with dimensions that are compatible with memory cards MC, such as small and thin SD memory cards and multimedia cards (MMC), the thickness of the base and cover must be reduced, reducing the rigidity of the case. There was a problem to do. In addition, since the base and cover are made of resin, there is a problem that noise resistance is low.
[0010]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a memory card adapter having increased rigidity without incurring an increase in cost. Another object of the present invention is to provide a memory card adapter having improved noise resistance in addition to the above object.
[0011]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, there is provided a memory card having a flat, substantially rectangular plate shape and having a plurality of I / O contact surfaces arranged in parallel on one side on the insertion side into the socket. A memory card adapter that is mounted and electrically and mechanically connects the memory card to a socket for a large memory card having an outer shape larger than that of the memory card. Are formed in the same dimension, and on the insertion side to the socket, a plurality of terminal pieces are arranged side by side in the same terminal arrangement as the large-sized memory card on one side in the thickness direction, and on the side surface opposite to the insertion direction into the socket. A box-shaped adapter body provided with a card storage chamber in which a memory card is inserted / removed through a card insertion opening that is opened almost entirely, and a memory card inserted into the card storage chamber through the card insertion opening. A plurality of contact spring pieces arranged in opposition to a plurality of I / O contact surfaces and elastically contacting with each I / O contact surface, and a plurality of conductive members formed integrally with the plurality of terminal pieces, respectively, The adapter main body is arranged opposite to one surface of the memory card on which the I / O contact surface is formed, and each contact spring piece is arranged opposite to each I / O contact surface on the surface facing each I / O contact surface. In addition, a resin base in which terminal pieces are arranged in the same terminal arrangement as the large-sized memory card on the opposite surface, and an opening at a position overlapping with the memory card inserted in the card storage chamber in the thickness direction are formed. The shape of the plan view is formed in a U-shape, and the cover made of resin that is attached to the surface of the base on the side of the memory card and around the card storage chamber is formed separately from the cover. To the opening of the cover. And it consists of a metal shell, which isA connection terminal electrically connected to the grounding conductive member of the plurality of conductive members is integrally formed with the metal shell;It is characterized by that.
[0012]
  According to a second aspect of the present invention, in the first aspect of the present invention, a fixed piece that is sandwiched between the base and the cover is formed integrally with the metal shell.In addition, a concave groove into which the fixed piece is inserted is formed in the base, and the base and the cover are joined with the fixed piece inserted into the concave groove.It is characterized by that.
[0014]
  Claim3The invention according to claim 1 is characterized in that, in the invention of claim 1, locking spring pieces for locking with the locking concave portions provided on both side surfaces of the memory card are formed integrally with the metal shell.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a memory card adapter according to the present invention will be described with reference to FIGS. In the following description, the arrow ab direction in FIG. 2 will be described as the up and down direction, the arrow cd direction as the left and right direction, and the arrow ef direction as the front and rear direction unless otherwise specified.
[0016]
The memory card adapter A of this embodiment is used to connect the mini SD card MSD shown in FIGS. 22 and 23 to the SD memory card socket, and the I / O contact surface of the mini SD card MSD is An opening 1d is formed in a portion facing the other surface of the mini SD card MSD and the resin base 2 arranged opposite to the formed one surface, and is attached to the surface of the base 2 on the mini SD card MSD side. A resin cover 1, a metal shell 3 attached to the opening 1d of the cover 1, and a plurality of (for example, nine in the case of a mini SD card) contacts 4 as conductive members.1~ 49And a write protect knob 7. Cover 1 and base 2 are metal shell 3 and contact 41~ 49And the tab 7 are sandwiched between them, and a card insertion slot 40 for inserting a mini SD card MSD is opened on the front side surface. The card insertion slot 40 communicates with and stores the mini SD card MSD. A card storage chamber 10 is provided. Note that the adapter main body composed of the cover 1, the base 2 and the metal shell 3 is formed in the same dimensions as the SD memory card in the vertical, horizontal and thickness dimensions.
[0017]
The cover 1 is made of a synthetic resin molded product, and leg portions 1b and 1c protrude from the left and right sides of the front end portion of the substantially rectangular main portion 1a, respectively. The main portion 1a and the leg portions 1b and 1c The shape in plan view is formed in a U shape.
[0018]
At the rear part (upper side in FIG. 7) of the main part 1a of the cover 1, a notch part 5a is formed by dropping one corner. In the cover 1, a rectangular notch 6a is provided at the outer edge of the leg 1b on the side where the notch 5a is formed, and a light is provided on the outer edge of the leg 1c opposite to the side where the notch 5a is formed. A notch 8a is provided through which the protective knob 7 is exposed. Further, a rectangular knob housing recess 33 communicating with the notch 8 a is formed on the lower surface of the cover 1, and a groove 34 extending along the front-rear direction is formed in the back of the knob housing recess 33. Further, on the opposing surfaces of the both leg portions 1a and 1b of the cover 1, concave portions 11a and 11b in which elastic contact pieces 44a and 44b of the metal cover 3 to be described later are disposed at intermediate portions in the front-rear direction are provided. Projections 11c and 11d projecting inward are integrally formed on the upper edges of 11a and 11b. Note that the protrusions 11c and 11d extend in the front-rear direction, respectively, and prevent the elastic contact spring pieces 44a and 44b from protruding above the cover 1.
[0019]
The main portion 1a of the cover 1 has a plurality (for example, nine in this embodiment) of terminal piece support bases 14 formed in a rectangular shape in a plan view in the rear portion of the surface facing the base 2 in the left-right direction. A contact receiving base 13 extending in the left-right direction is provided on the front edge of the surface facing the base 2 so as to project toward the base 2 side. The contact receiving base 13 is formed with cutout grooves 13a and 13a at portions corresponding to connecting pieces 45a and 45b of the metal shell 3 to be described later. The cutout grooves 13a and 13a are formed on the corresponding terminal piece support bases 14 and 14, respectively. It extends to the rear end. Further, on both the left and right sides of the contact cradle 13, concave grooves 27 and 27 into which the fixing pieces 43 and 43 are respectively fitted are formed at portions facing the fixing pieces 43 and 43 of the metal shell 3 described later.
[0020]
On the other hand, the base 2 is made of a synthetic resin molded product and is formed in a substantially rectangular shape in plan view. The corner 2 corresponding to the notch 5a of the cover 1 is dropped and the notch 5 for reverse insertion is provided together with the notch 5a. A notch portion 5b is formed, and downward stepped portions 18 and 18 having a width on the back surface side narrower than a width on the front surface side are formed on the left and right side edges of the back surface (the surface opposite to the surface facing the cover 1). Has been. On one side edge of the base 2 where the notch 5b is formed, a notch 6b that is recessed in a rectangular shape that forms the lock notch 6 together with the notch 6a is provided at a portion corresponding to the notch 6a of the cover 1, and the notch 5b A notch 8b through which the knob 7 is exposed is provided on the side edge opposite to the side on which the tab is formed.
[0021]
A rectangular knob housing recess 35 that communicates with the notch 8 b is formed on the upper surface of the base 2, and a recess groove 36 that extends along the front-rear direction is formed at the back of the knob storage recess 35. A locking projection 37 protrudes upward from an intermediate portion of the bottom surface in the front-rear direction.
[0022]
A storage recess 10a opened forward is formed on the upper surface of the base 2, and a card storage chamber 10 is constituted by the storage recess 10a and a space (opening 1d) between the legs 1a and 1b of the cover 1. . A plurality of narrow (for example, nine) grooves 16 extending from the intermediate portion of the storage recess 10a to the rear end along the insertion / extraction direction of the mini SD card MSD are formed on the bottom surface of the storage recess 10a side by side in the left-right direction. A concave portion 9 into which a hand enters when inserting / removing the mini-SD card MSD is formed in the approximate center of the front side. Further, on the bottom surface of the storage recess 10a, protrusions 28 and 28 that abut against the connecting pieces 45a and 45b are respectively provided at portions facing the connecting pieces 45a and 45b of the metal shell 3 to be described later. Protrusions 29 and 29 that abut against the fixing pieces 43 and 43 are provided in a projecting manner at portions opposite to 43 and 43.
[0023]
Of the leg portions 2a and 2b on the left and right sides of the storage recess 10a, the rear side of the inner side surface of the leg portion 2b on the cutout portion 8b side projects from the other portion to the leg portion 2a side. An L-shaped support wall 31 that comes into contact with the metal shell 3 is provided so as to protrude along with the base 2 along 2d. An inclined surface 31 a that abuts against the inclined surface of the cutout portion 51 of the mini SD card MSD is formed on the front end surface of the support wall 31. Further, in both leg portions 2a and 2b, concave grooves 2c and 2c into which the fixing pieces 42 and 42 are fitted are formed at portions facing the fixing pieces 42 and 42 of the metal shell 3, respectively.
[0024]
Further, rectangular through holes 17 penetrating the front and back of the base 2 are formed in the rear part of the base 2 so as to face the terminal piece support 14 provided on the cover 1 in the left-right direction. A narrow press-fitting groove 19 that communicates with the through hole 17 is formed on the front end surface, and a plurality of concave grooves 32 that are open to the rear surface side are formed at the peripheral edge of each through hole 17 on the lower surface of the base 2. Is formed. Here, the arrangement of the through holes 17 and the terminal piece support 14 is the same as the terminal arrangement of the SD memory card.
[0025]
9 contacts 41~ 49As shown in FIGS. 18 and 19, the hoop material 20 made of a metal having good conductivity (for example, phosphor bronze) is formed by being punched and bent so as to be integrally connected. Contact 41~ 49Is the pin 4 contact 4 when viewed from the bottom side.9Is located at the left end, and contact 9 of pin 99Contact 4 from pin 1 to pin 8 on the right side of1~ 48Are arranged in order.
[0026]
Each contact 41~ 49Are a rectangular plate-shaped terminal piece 21, a narrow fixed piece 22 integrally connected from the front end portion of the terminal piece 21, and one end portion connected to the terminal piece 21 via the fixed piece 22. The central piece 23, a bent piece 24 bent downward from the other end of the central piece 23, and a contact spring piece 25 protruding forward from the tip of the bent piece 24 are integrally formed. Is done. The shape of each contact spring piece 25 in a side view is formed such that the intermediate portion protrudes toward the cover 1 as compared to both end portions (for example, a letter shape). And adjacent contact 41~ 49Are connected via a U-shaped connecting piece 26 extending continuously and integrally from the side of the connecting portion with the fixed piece 22 in the central piece 23, and each connecting piece 26 is connected via a narrow connecting piece 20b. Are connected to a strip-shaped carrier portion 20a. Contact 4 located at both ends8, 49Is connected to the carrier portion 20a via an L-shaped connecting piece 20c having one end connected to the central piece 23. The rear end portion of each terminal piece 21 is bent obliquely upward, and the intermediate portion of each connecting piece 20b, 20c is also folded in a substantially Z shape at substantially the same angle as the rear end portion of each terminal piece 21. It is tuned.
[0027]
The metal shell 3 is formed by punching and bending a thin metal plate, and has a rectangular plate-shaped main portion 41 and L-shaped cross-sections protruding downward from the left and right side edges of the front portion of the main portion 41. The fixing pieces 42, 42, the side portion 47 protruding downward from the rear edge of the main portion 41, the fixing pieces 43, 43 protruding rearward from the left and right sides of the lower edge of the side portion 47, and the side Pins 4 and 7 at the lower edge of the piece 47 (fourth and seventh from the left as viewed from the bottom) 43, 46The connecting pieces 45a and 45b projecting backward from the portion corresponding to, and the contacts 4 projecting rearward from the rear edge of each coupling piece 45a and 45b.3, 46The rectangular plate-like terminal pieces 46a and 46b disposed between the terminal piece 21 and the terminal piece support base 14 are formed integrally and continuously. The rear ends of the terminal pieces 46a and 46b are contact 43, 46Like the terminal piece 21, it is bent obliquely upward. Also, elastic contact pieces 44a and 44b projecting rearward from the rear edges of the vertical pieces of the fixed pieces 42 and 42 are formed continuously and integrally. The shape of the elastic contact pieces 44a and 44b in plan view is as follows. The intermediate portion is formed in a shape (for example, a U-shape) so as to protrude toward the elastic contact spring pieces 44b, 44a facing each other as compared with the both end portions.
[0028]
The write protect knob 7 is made of a synthetic resin molded product, and includes a substantially rectangular parallelepiped operation portion 7a and a T-shaped locking piece 7b projecting sideways from the upper portion of one side of the operation portion 7a. The The knob 7 is arranged in the knob housing recesses 33 and 35 with the claws 7c and 7c protruding vertically from the tip of the locking piece 7b inserted in the grooves 34 and 36 of the cover 1 and the base 2, and the operation part 7a is exposed in the notches 8a and 8b. The knob 7 can be moved in the front-rear direction as the claws 7c, 7c move in the concave grooves 34, 36, and the front and rear sides of the claws 7c, 7c are engaged with the engagement protrusions 37. In the notches 8a and 8b, the front end or the rear end is held at the switching position, and whether or not the write protection state is set is switched depending on the position of the knob 7.
[0029]
In assembling the memory card adapter A of the present embodiment, first, as shown in FIG. 20, the contact 4 connected to the carrier portion 20a via the connecting pieces 20b and 20c.1~ 49When the terminal piece 21 is inserted into the through-hole 17 and the contact spring piece 25 is disposed in the groove 16 and pressed into the base 2 from above, each contact 41~ 49The fixing piece 22 is temporarily fixed to the base 2 by being press-fitted into the press-fitting groove 19. At this time, each contact 41~ 49The connecting pieces 20b and 20c that connect the central piece 23 and the carrier portion 20a are inserted into the groove 39 provided in the base 2, and in this state, the carrier portion 20a is raised and each contact 41~ 49When the connecting pieces 20b and 20c are bent obliquely upward with respect to the central piece 23, the connecting portion between the central piece 23 and the connecting piece 20b and the connecting portion between the central piece 23 and the connecting piece 20c are cut off (notch). Fold), each contact 41~ 49The carrier portion 20a is separated from. That is, each contact 41~ 49Are separated into individual parts, each contact 41~ 49Are electrically insulated (see FIG. 5).
[0030]
Thereafter, the knob 7 is assembled in the knob housing recess 35 of the base 2, and the cover 1 is covered from the upper side of the base 2 with the metal shell 3 placed at a predetermined position on the upper side of the base 2. Assembling is completed by joining together. The cover 1 and the base 2 may be joined using an appropriate method such as ultrasonic welding, heat welding, adhesion, or caulking. Further, in the present embodiment, the connecting pieces 20b and 20c are bent in a state in which the fixing piece 22 is temporarily fixed to the base 2 by press-fitting into the press-fitting groove 19, etc.1~ 49After the connecting portion between the central piece 23 and the connecting piece 20b or the connecting piece 20c is cut and separated, the cover 1 is attached to the base 2 and the contact 4 is connected between the base 2 and the cover 1.1~ 49Each contact 41~ 49Is placed on the base 2 and each contact 4 is fixed with a jig or the like.1~ 49The connecting pieces 20b, 20c are bent in a state in which the contact 4 is pressed, and each contact 41~ 49After the connecting portion between the central piece 23 and the connecting piece 20b or the connecting piece 20c is cut and separated, the cover 1 is attached to the base 2 and the contact 4 is connected between the base 2 and the cover 1.1~ 49May be sandwiched.
[0031]
In the assembled state, each contact 41~ 49The terminal piece 21 is in contact with the terminal piece support base 14 of the cover 1 directly or via the terminal pieces 46a and 46b, and the bent portion at the rear end of the terminal piece 21 is the terminal piece support base 14 or the terminal piece 46a. , 46b is in contact with the inclined surface provided on the rear surface of the base 2, and is sandwiched between the peripheral portion of the through hole 17 of the base 2 and the inclined surface of the terminal piece support base 14. Further, the metal shell 3 is such that the fixing pieces 42 and 42 are connected to the leg portions 1b and 1c of the cover 1 and the leg portions 2a and 2b of the base 2 in a state where the main portion 41 is in contact with the front end surface of the support wall 31 of the cover 1. The fixing pieces 43 and 43 are sandwiched between the recessed grooves 27 and 27 of the cover 1 and the protrusions 29 and 29 of the base 2, and the connecting pieces 45 a and 45 c are sandwiched between the provided recessed grooves 2 c and 2 c. The base portion 45b is sandwiched between the cover 1 and the base 2 by being sandwiched between the cutout grooves 13a and 13a of the cover 1 and the protrusions 28 and 28 of the base 2. Thus, a part of the adapter main body is constituted by a metal metal shell 3, and the adapter main body is reinforced by fitting the metal shell 3 into the opening 1d of the cover 1, so that the rigidity can be increased. Further, the metal shell 3 is separate from the cover 1 and the base 2 and is sandwiched between the cover 1 and the base 2, so that the metal shell 3 is formed simultaneously with the resin cover 1. The manufacturing cost can be reduced, and the cost of the memory card adapter A can be reduced. In this embodiment, the opening 1d is formed in almost the entire portion of the cover facing the surface opposite to the surface on which the I / O contact surface of the mini SD card is formed, but facing the mini SD card. An opening may be formed in at least a part of the portion to be performed, and the metal shell 3 may be fitted into the opening.
[0032]
The terminal pieces 46a and 46b of the metal shell 3 are ground contacts 4 (pins 3 and 6 in the case of an SD memory card).3, 46Contact 4 when the terminal piece 21 is attached to the socket.3, 46Since the metal shell 3 is grounded via the terminal pieces 46a and 46b, the shield performance of the adapter body can be improved.
[0033]
When the mini-SD card MSD is inserted into the memory card adapter A assembled as described above, the mini-SD card MSD is stored in the card insertion slot 40 with the front-rear direction and the front-back direction facing the normal direction. When inserted into the chamber 10, the mini SD card MSD is inserted between the leg portions 1b, 2a and the leg portions 1c, 2b of the cover 1 and the base 2. When the mini SD card MSD is further inserted into the card storage chamber 10, the contact spring pieces 25 arranged in parallel in the card storage chamber 10 slide on the I / O contact surface 53 provided on the back surface of the mini SD card MSD. In contact with each other, the contact spring piece 25 is electrically connected to the I / O contact surface 53. Further, when the mini SD card MSD is inserted into the card storage chamber 10, the notch 51 of the mini SD card MSD comes into contact with the inclined surface 31a of the support wall 31, and further insertion of the mini SD card MSD is restricted. At the same time, the locking projections 44c, 44c provided at the intermediate portions of the elastic contact pieces 44a, 44b provided integrally with the metal shell 3 are locked to the locking recesses 55, 55 of the mini SD card MSD. The mini SD card MSD is prevented from falling off.
[0034]
Further, when removing the mini SD card MSD inserted in the memory card adapter A, the front end portion of the mini SD card MSD exposed from the adapter body is gripped to resist the spring force of the elastic spring pieces 44a and 44b. Then, when the mini SD card MSD is pulled forward, the locking state between the locking projections 44c, 44c of the elastic contact pieces 44a, 44b and the locking recesses 55, 55 is released, and the mini SD card MSD is removed. It can be easily removed from the memory card adapter A.
[0035]
As described above, in this embodiment, the elastic contact pieces 44a and 44b (locking spring pieces) to be locked with the locking recesses 55 and 55 of the mini SD card MSD are formed integrally with the metal shell 3. When the mini-SD card MSD is inserted into the adapter body, the elastic contact pieces 44a, 44b are engaged with the locking recesses 55, 55, so that the mini-SD card MSD can be prevented from coming off. Since the pieces 44a and 44b are formed integrally with the metal shell 3, the number of parts can be reduced compared to the case where the elastic contact pieces 44a and 44b are separate members, and the cost of the memory card adapter can be reduced.
[0036]
【The invention's effect】
  As described above, the invention of claim 1 is a flat and substantially rectangular plate shape, and a memory card having a plurality of I / O contact surfaces arranged in parallel on one side is mounted on the insertion side into the socket. A memory card adapter for electrically and mechanically connecting the memory card to a socket for a large memory card having an outer shape larger than that of the memory card, the vertical, horizontal and thickness dimensions of the large memory card Are formed with the same dimensions, and on the insertion side to the socket, a plurality of terminal pieces are arranged in one side of the thickness direction in the same terminal arrangement as the large memory card, and on the entire side opposite to the insertion direction to the socket. A box-shaped adapter body having a card storage chamber in which a memory card is inserted / removed through an open card insertion slot and a plurality of I / O contacts of the memory card inserted into the card storage chamber through the card insertion slot A plurality of contact spring pieces arranged in opposition to the respective surfaces and elastically contacting each I / O contact surface, and a plurality of conductive members formed integrally with the plurality of terminal pieces, respectively, and the adapter main body includes a memory card. The I / O contact surfaces of the I / O contact surfaces are arranged opposite to each other, the contact spring pieces are arranged on the surface facing the I / O contact surfaces so as to face the I / O contact surfaces, and on the opposite side. The shape of the plan view is formed by forming an opening at a position overlapping the memory card inserted in the card storage chamber in the thickness direction with a resin base in which terminal pieces are arranged in the same terminal arrangement as the large memory card on the surface A cover made of resin that is formed in a U-shape and is applied to the surface of the base on the side of the memory card that overlaps the area around the card storage chamber, and the cover is formed separately from the cover. Metal sheet attached Constituted by the LeA connection terminal electrically connected to the grounding conductive member of the plurality of conductive members is integrally formed with the metal shell;Since an opening is formed in at least a part of the cover portion facing the other surface of the memory card, and a metal shell is attached to the opening, a metal shell is attached to a part of the adapter body. By using a metal shell made of metal, the adapter body can be reinforced to increase its rigidity, and the metal base is formed separately from the resin base and cover. The manufacturing cost can be reduced and the cost of the memory card adapter can be reduced as compared with the case of simultaneous molding with the base and the cover.Further, when the conductive member for grounding is connected to the I / O contact surface of the ground when mounted on the socket, the metal shell is grounded via the connection terminal, so that the shield performance of the adapter body is improved. There is.
[0037]
  According to a second aspect of the present invention, in the first aspect of the present invention, a fixed piece that is sandwiched between the base and the cover is formed integrally with the metal shell.At the same time, a concave groove into which the fixed piece is inserted is formed in the base, and the base and the cover are joined with the fixed piece inserted into the concave groove.When the base and the cover are joined together, the metal shell is fixed to the base and the cover by sandwiching the fixing piece between the base and the cover. Similarly, the manufacturing cost can be reduced and the cost of the memory card adapter can be reduced as compared with the case where the metal shell is formed simultaneously with the resin cover.
[0039]
  Claim3The invention according to claim 1 is characterized in that, in the invention according to claim 1, locking spring pieces that respectively engage with locking concave portions provided on both side surfaces of the memory card are integrally formed with the metal shell, and the memory card is mounted on the adapter body. When the card is inserted, the locking spring piece locks with the locking recess, so that the memory card can be prevented from coming off, and the locking spring piece is formed integrally with the metal shell. Compared to the case where the spring piece is a separate member, the number of parts can be reduced, and the cost of the memory card adapter can be reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a memory card adapter according to an embodiment.
FIG. 2 is an external perspective view of the same.
3 is a cross-sectional view taken along the line XX of FIG.
FIG. 4 is a cross-sectional view of a state before joining the cover and the base as seen from the side.
FIG. 5 is a view of a state in which a contact is incorporated in the base as seen from above.
6A and 6B show a state in which a metal shell is incorporated in the above-described cover, wherein FIG. 6A is a view seen from the lower side, and FIG. 6B is a view seen from the front side.
FIG. 7 is a top view of the same cover.
8A and 8B show the same cover, where FIG. 8A is a bottom view and FIG. 8B is a view as seen from the rear side.
9A and 9B show the same cover, wherein FIG. 9A is a cross-sectional view taken along line AA, FIG. 9B is a cross-sectional view taken along line BB, FIG. 9C is a cross-sectional view taken along CC, and FIG. is there.
10A and 10B show the same cover, wherein FIG. 10A is a cross-sectional view taken along line EE, and FIG. 10B is a cross-sectional view taken along line FF.
FIG. 11 is an external perspective view of the same cover as viewed from below.
FIGS. 12A and 12B show the same body, where FIG. 12A is a view as seen from above, and FIG. 12B is an NN cross-sectional view.
13A and 13B show the same body, where FIG. 13A is a view as seen from the lower side, and FIG. 13B is a view as seen from the rear side.
FIGS. 14A and 14B show the body, wherein FIG. 14A is a GG sectional view, FIG. 14B is a HH sectional view, FIG. 14C is a II sectional view, and FIG. 14D is a JJ sectional view. is there.
FIGS. 15A and 15B show the same body, wherein FIG. 15A is a KK sectional view, FIG. 15B is a LL sectional view, and FIG. 15C is a MM sectional view;
16A and 16B show the metal shell of the above, where FIG. 16A is a view seen from the upper side, FIG. 16B is a right side view, and FIG. 16C is a view seen from the front side.
FIG. 17 is a view of the above metal shell as seen from below.
FIG. 18 is an external perspective view showing a state before the contacts are separated from the hoop material.
FIG. 19 is an external perspective view showing a state in which the contacts are separated from the hoop material.
FIG. 20 is a diagram for explaining the manufacturing process of the above.
FIG. 21 is an external perspective view of an SD memory card.
22A and 22B show a mini SD card mounted in the present embodiment, where FIG. 22A is a front view, FIG. 22B is a side view seen from the right side, and FIG. 22C is a bottom view.
FIGS. 23A and 23B show the mini SD card of the same, where FIG. 23A is a rear view and FIG. 23B is a top view.
[Explanation of symbols]
1 Cover
1d opening
2 base
3 Metal shell
41~ 49  contact

Claims (3)

扁平な略矩形板状であってソケットへの挿入側には一面に複数のI/O接触面が並行に配設されたメモリカードを装着して、前記メモリカードよりも外形が大きい大型メモリカード用のソケットに前記メモリカードを電気的且つ機械的に接続するためのメモリカード用アダプタであって、
前記大型メモリカードと縦、横、厚みの各寸法が同じ寸法に形成され、ソケットへの挿入側には厚み方向の一面に複数の端子片が前記大型メモリカードと同じ端子配列で並べて配置され、ソケットへの挿入方向と反対側の側面の略全体に開口するカード挿入口を通して前記メモリカードが挿抜されるカード収納室を内部に設けた箱状のアダプタ本体と、
カード挿入口を通して前記カード収納室に挿入されるメモリカードの複数のI/O接触面にそれぞれ対向配置されて各I/O接触面と弾接する複数の接触ばね片と複数の前記端子片とがそれぞれ一体に形成された複数の導電部材とを備え、
前記アダプタ本体を、メモリカードのI/O接触面が形成された一面に対向配置され、各I/O接触面と対向する面に各I/O接触面に対向して前記各接触ばね片が配列されるとともに、反対側の面に前記大型メモリカードと同じ端子配列で前記端子片が配列された樹脂製のベースと、前記カード収納室に挿入されたメモリカードと厚み方向において重なる位置に開口部を形成することによって平面視の形状がコ字形に形成され、ベースにおけるメモリカード側の面であって前記カード収納室の周りの部位に重ねて被着される樹脂製のカバーと、前記カバーとは別体に形成されて前記カバーの開口部に取着される金属シェルとで構成し、前記複数の導電部材の内、接地用の導電部材と電気的に接続される接続端子を金属シェルと一体に形成したことを特徴とするメモリカード用アダプタ。
A large-sized memory card having a flat, substantially rectangular plate shape and having a memory card with a plurality of I / O contact surfaces arranged in parallel on one side of the socket, and having a larger outer shape than the memory card A memory card adapter for electrically and mechanically connecting the memory card to a socket for
The large memory card and the vertical, horizontal, and thickness dimensions are formed in the same dimension, and a plurality of terminal pieces are arranged side by side in the same terminal arrangement as the large memory card on the insertion side to the socket in the thickness direction, A box-shaped adapter main body provided with a card storage chamber in which the memory card is inserted and removed through a card insertion opening that opens to substantially the entire side surface opposite to the insertion direction into the socket;
A plurality of contact spring pieces and a plurality of the terminal pieces are arranged to be opposed to the plurality of I / O contact surfaces of the memory card inserted into the card storage chamber through the card insertion slot and are in elastic contact with the respective I / O contact surfaces. A plurality of conductive members formed integrally with each other;
The adapter body is disposed opposite to one surface of the memory card on which the I / O contact surface is formed, and each contact spring piece is opposed to each I / O contact surface on the surface facing each I / O contact surface. A resin base on which the terminal pieces are arranged in the same terminal arrangement as the large memory card on the opposite surface, and an opening at a position overlapping with the memory card inserted in the card storage chamber in the thickness direction A cover made of resin that is formed in a U-shape in a plan view by forming a portion, and is deposited on the memory card side surface of the base so as to overlap the portion around the card storage chamber, and the cover A metal shell that is formed separately from and attached to the opening of the cover, and a connection terminal that is electrically connected to a grounding conductive member among the plurality of conductive members. integrally formed with the Memory card adapter, characterized in that.
金属シェルと一体に、ベースとカバーとの間で挟持される固定片を形成するとともに、当該固定片が挿入される凹溝をベースに形成し、凹溝内に固定片を挿入した状態でベースとカバーとを接合することを特徴とする請求項1記載のメモリカード用アダプタ。A fixed piece that is sandwiched between the base and the cover is formed integrally with the metal shell, a concave groove into which the fixed piece is inserted is formed in the base, and the fixed piece is inserted into the concave groove. 2. The memory card adapter according to claim 1, wherein the cover and the cover are joined. メモリカードの両側面に設けられたロック用凹部とそれぞれ係止する係止ばね片を金属シェルと一体に形成したことを特徴とする請求項1記載のメモリカード用アダプタ 2. The memory card adapter according to claim 1, wherein a locking spring piece for locking with a locking recess provided on both sides of the memory card is formed integrally with the metal shell .
JP2003064059A 2003-03-10 2003-03-10 Memory card adapter Expired - Fee Related JP3885746B2 (en)

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Application Number Priority Date Filing Date Title
JP2003064059A JP3885746B2 (en) 2003-03-10 2003-03-10 Memory card adapter
US10/531,457 US7094106B2 (en) 2003-03-10 2004-03-09 Adaptor for memory card
CNB2004800011636A CN100361143C (en) 2003-03-10 2004-03-09 Adaptor for memory card
KR1020057007107A KR100682570B1 (en) 2003-03-10 2004-03-09 Adaptor for memory card
PCT/JP2004/003028 WO2004081858A1 (en) 2003-03-10 2004-03-09 Adaptor for memory card
TW093106282A TWI253591B (en) 2003-03-10 2004-03-10 Adaptor for memory card

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JP2006252188A (en) * 2005-03-10 2006-09-21 Alps Electric Co Ltd Card adapter
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