JP4436962B2 - Card insertion detection device - Google Patents

Card insertion detection device Download PDF

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Publication number
JP4436962B2
JP4436962B2 JP2000250470A JP2000250470A JP4436962B2 JP 4436962 B2 JP4436962 B2 JP 4436962B2 JP 2000250470 A JP2000250470 A JP 2000250470A JP 2000250470 A JP2000250470 A JP 2000250470A JP 4436962 B2 JP4436962 B2 JP 4436962B2
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contact
card
detection
ground
land
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JP2002055738A (en
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眞樹 坂岡
理典 高下
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京セラエルコ株式会社
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Priority to KR10-2001-0015743A priority patent/KR100400196B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket

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  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Conveying Record Carriers (AREA)

Description

【０００１】
【技術分野】
本発明は、メモリカードのような情報記録カードを挿脱するコネクタにおいて、該カードの挿入を検知する装置に関する。
【０００２】
【従来技術およびその問題点】
メモリカードコネクタでは、カードの挿入を検知した上で、記録情報の書込または読込を行っている。従来、このカードの挿入検知は、コネクタの電源端子や信号端子とは無関係に、カードによって押圧変位されて接触する一対の検知コンタクト（検知端子）を設けて行っていた。しかし、小型化の進行する各種のメディアカード用のコネクタにおいて、カードの挿入検知のために設けられる一対の検知コンタクトは、小型化を阻害する要因であり、コストアップ要因であった。
【０００３】
【発明の目的】
本発明は、従来のカードの挿入検知装置についての以上の問題意識に基づき、より簡単にカードの挿入を検知できる装置を得ることを目的とする。
【０００４】
【発明の概要】
本発明は、カードコネクタに必ず設けられる、カードの接地ランドに導通する接地コンタクトを利用してカードの挿入を検知するという着眼に基づいてなされたものである。
すなわち本発明は、接地ランドを有するカードの挿脱部を備えたベース部材と、このベース部材に、カードの接地ランドに対応させて、該カードが挿入されたとき該接地ランドに導通するように設けた接地コンタクトとを有するカードコネクタにおいて、接地コンタクトの一部に、基部を該接地コンタクトに接続し先端を自由にして挿入検知舌片を形成する一方、ベース部材に、挿入されたカードにより押圧変位されたとき、この挿入検知舌片に接触する検知コンタクトを支持したことを特徴としている。
このように接地コンタクトに挿入検知舌片を設け、この挿入検知舌片と対をなす検知コンタクトを設けると、殆どスペースを増大することなく、カードの検知ができる。挿入検知舌片は、具体的には、検知コンタクトによって押圧されたとき、接地コンタクトを接地ランドから離間させない程度に該接地コンタクトから独立して変位可能な態様で設けるものであり、検知コンタクトにより挿入検知舌片に押圧変位力が加わっても、接地コンタクトとカードの接地ランドとの接触を維持し、安定した検知動作を保証できる。
【０００５】
接地コンタクトと検知コンタクトは、カードがベース部材の挿脱部に挿入されるとき、接地コンタクト、検知コンタクトの順に押圧変位されるように配置することが望ましい。
【０００６】
より具体的には、接地コンタクトは、ベース部材への固定部と、この固定部から伸びる弾性変形脚部と、この弾性変形脚部の自由端部に形成した、カードの接地ランドに接触して押圧される着力接点端部と、上記弾性変形脚の一部に形成した上記挿入検知舌片とを備え、検知コンタクトは、ベース部材への固定部と、この固定部から上記接地コンタクトの挿入検知舌片上に伸びる弾性変形脚と、この弾性変形脚部の自由端部に形成した、カードによって押圧変位されたとき上記挿入検知舌片と弾性変形脚部を接触させる着力端部とを備えることが望ましい。
【０００７】
【発明の実施形態】
図示実施形態は、本発明のカード挿入検知装置をメモリカードコネクタに適用した実施形態である。図１、図３に示すように、合成樹脂製のベース部材１０は、基板３０上に固定される。このベース部材１０は、平面的に見て、コンタクト支持壁１１と左右の挿脱壁１２、１３を有する略コ字状をしていて、このコンタクト支持壁１１と挿脱壁１２、１３によって、メモリカードＭＣの挿脱部１４が形成されている。挿脱壁１３側には、この挿脱部１４に挿入されるメモリカードＭＣと当接するスライド部材１５がメモリカードＭＣの挿入方向に移動可能に支持されており、このスライド部材１５は、引張ばね１６によってメモリカードＭＣを排出する方向に移動付勢されている。
【０００８】
スライド部材１５は、ハートカム機構１８によって位置制御される。すなわち、ハートカム機構１８は、挿脱部１４に挿入したメモリカードＭＣによりスライド部材１５を押しながらその挿入端まで移動させると、該スライド部材１５、つまりメモリカードＭＣを挿入位置に保持し、挿入位置でメモリカードＭＣを再び挿入端方向に移動させると、引張ばね１６の力によりスライド部材１５を排出位置に移動させ、メモリカードＭＣを取り出すことができる。このようなハートカム機構１８は周知であり、また、本発明は、メモリカードＭＣを挿入位置と取出位置とに移動させることができるコネクタであれば適用できるので、これ以上の挿脱機構の説明は省略する。
【０００９】
メモリカードＭＣは周知のように情報記憶回路を備えており、その挿入側の端部に、記憶回路に連なる信号ランド群Ｌ、読出電圧を与える電源ランドＰ、及び接地ランドＥを備えている。
【００１０】
一方、ベース部材１０のコンタクト支持壁１１には、これらの信号ランド群Ｌに対応する信号コンタクト群２１、電源ランドＰに対応する電源コンタクト２２及び接地ランドＥに対応する接地コンタクト２３が支持されている。信号コンタクト群２１は、基板３０上の信号ランド群３１に導通し（半田付けされ）、各信号ランド群３１は制御回路（信号回路）４０に接続されている。電源コンタクト２２と接地コンタクト２３はそれぞれ、基板３０上の電源ランド３２と電源接地ランド３３に導通し（半田付けされ）、電源回路４１に接続されている。２４、２５は、ベース部材１０に支持された書込禁止コンタクトであり、メモリカードＭＣにセットした書込禁止突起により、両者が押されて導通すると、その導通信号が書込禁止ランド３４、３５を介して制御回路４０に与えられる。
【００１１】
以上は通常のメモリカードコネクタの回路構成例である。本実施形態は、接地コンタクト２３を利用し、ベース部材１０のコンタクト支持壁１１に新たに検知コンタクト２６を支持することにより、メモリカードＭＣの挿入を検知する検知装置を構成したものである。この接地コンタクト２３と挿入検知コンタクト２６の関係を、図４ないし図８について説明する。
【００１２】
接地コンタクト２３は、基板３０の電源接地ランド３３に半田付けされる半田付け脚２３ａ、ベース部材１０のコンタクト支持壁１１に埋め込み固定される固定部２３ｂ、この固定部２３ｂから挿脱部１４内に伸びる弾性変形脚２３ｃ、及びこの弾性変形脚２３ｃの先端自由端部に形成した着力接点端部２３ｄを備えている。着力接点端部２３ｄは、メモリカードＭＣの接地ランドＥによって押圧されて該接地ランドＥと接触し、このとき弾性変形脚２３ｃが撓んで導通圧力が発生する。
【００１３】
弾性変形脚２３ｃ内には、コ字状の切断部２３ｅにより、固定部２３ｂ側から着力接点端部２３ｄ側に向かって伸びる挿入検知舌片２３ｆが形成されている。この挿入検知舌片２３ｆは、着力接点端部２３ｄがメモリカードＭＣの接地ランドＥに押圧されて導通している状態において、着力接点端部２３ｄと接地ランドＥとの接触状態を維持したまま、該挿入検知舌片２３ｆだけが撓むことができる独立弾性を備えている。
【００１４】
一方、挿入検知コンタクト２６は、基板３０の挿入検知ランド３６に半田付けされる半田付け脚２６ａ、ベース部材１０のコンタクト支持壁１１に埋め込み固定される固定部２６ｂ、この固定部２６ｂから、接地コンタクト２３の挿入検知舌片２３ｆ上に伸びる弾性変形脚２６ｃ及びこの弾性変形脚２６ｃの先端自由端部に形成した着力端部２６ｄを備えている。着力端部２６ｄは、自由状態では、接地コンタクト２３のいずれの部分とも導通することはないが、メモリカードＭＣの接地ランドＥ（または接地ランドＥ以外のメモリカード裏面）によって押圧されると、接地コンタクト２３の挿入検知舌片２３ｆ側に弾性変形し、弾性変形脚２６ｃの一部を該挿入検知舌片２３ｆに接触させる。着力端部２６ｄは、着力接点端部２３ｄよりコンタクト支持壁１１に近い位置にあり、メモリカードＭＣがベース部材１０の挿脱部１４内に挿入されるとき、最初に着力接点端部２３ｄがメモリカードＭＣに押圧されて弾性変形し、次に着力端部２６ｄがメモリカードＭＣに押圧されて弾性変形する関係にある。
【００１５】
以上の挿入検知コンタクト２６の半田付け脚２６ａは、基板３０上の挿入検知ランド３６に導通し（半田付けされ）、この挿入検知ランド３６と電源接地ランド３３とが、挿入検知回路４２に接続されている。
【００１６】
上記構成の本装置は従って、次のようにメモリカードＭＣの挿入を検知することができる。図６のメモリカードＭＣをベース部材１０の挿脱部１４に挿入する前の状態では、接地コンタクト２３と挿入検知コンタクト２６とは導通しておらず、挿入検知回路４２は挿入検知信号を出さない。この図６の状態からメモリカードＭＣを挿入していくと、まず接地ランドＥが接地コンタクト２３の着力接点端部２３ｄに接触して弾性変形脚２３ｃを図の下方に撓ませる。よって、この挿入段階でメモリカードＭＣの接地ランドＥは接地される（図７）。
【００１７】
さらに、メモリカードＭＣを挿入していくと、接地ランドＥが接地コンタクト２３の着力接点端部２３ｄとの導通状態を維持しながら、着力端部２６ｄに接触して弾性変形脚２６ｃを図の下方に撓ませる。すると、弾性変形脚２６ｃの一部が挿入検知舌片２３ｆと導通し、挿入検知回路４２がメモリカードＭＣの挿入を検知する（図８）。すなわち、挿入検知舌片２３ｆは、検知コンタクト２６によって押圧されたとき、接地コンタクト２３を接地ランドＥから離間させない程度に該接地コンタクト２３から独立して変位可能である。別言すると、挿入検知舌片２３ｆは、弾性変形脚２６ｃに押されて弾性変形したとき、着力接点端部２３ｄとメモリカードＭＣの接地ランドＥとの導通関係を阻害しない。
【００１８】
なお、メモリカードＭＣの挿入時には、電源コンタクト２２がメモリカードＭＣの電源ランドＰと接触し、電源回路４１を介してメモリカードＭＣに読出電圧が与えられ、同時に複数の信号コンタクト群２１がメモリカードＭＣの信号ランド群Ｌと接触し、メモリカードＭＣの情報記憶回路に記憶されている情報が制御回路４０に読み出される。この読出動作は従来品と異なるところはない。
【００１９】
以上の実施形態では、接地コンタクト２３の挿入検知舌片２３ｆを、弾性変形脚２３ｃにコ字状の切断部２３ｅを形成して、該弾性変形脚２３ｃの中に設けたが、挿入検知舌片２３ｆを弾性変形脚２３ｃと並列する形で設けることも可能である。また、以上の実施形態では、接地コンタクト２３が電源回路４１の接地コンタクトであるが、接地コンタクト２３は接地されるものであれば、電源回路の接地コンタクトである必要はない。図９は、その実施形態を模式的に示している。本カード挿入検知装置は、メモリカードコネクタ以外の小型薄型のカードの脱着機構一般に適用できる。
【００２０】
【発明の効果】
以上のように本発明は、カードの挿入検知のために必要な一対の検知コンタクトの一方を、接地コンタクトから構成することを可能としたので、小型で部品点数の少ないカード挿入検知装置を得ることができる。
【図面の簡単な説明】
【図１】本発明によるカード挿入検知装置をメモリカードコネクタに適用した実施形態を示す斜視図である。
【図２】同平面図である。
【図３】同側面図である。
【図４】ベース部材に支持された接地コンタクトと検知コンタクトの関係を示す斜視図である。
【図５】同平面図である。
【図６】図５のVI‐VI線に沿う断面図である。
【図７】図５のVI‐VI線に沿う、接地コンタクトだけがカードによって押圧変位された状態の断面図である。
【図８】図５のVI‐VI線に沿う、接地コンタクトと検知コンタクトの双方がカードによって押圧変位された状態の断面図である。
【図９】本発明の別の態様を示す図１に対応する斜視図である。
【符号の説明】
１０ ベース部材
１１ コンタクト支持壁
１２ １３ 挿脱壁
１４ 挿脱部
１５ スライド部材
１６ 引張ばね
１８ ハートカム機構
２１ 信号コンタクト群
２２ 電源コンタクト
２３ 接地コンタクト
２３ａ 半田付け脚
２３ｂ 固定部
２３ｃ 弾性変形脚
２３ｄ 着力接点端部
２６ 挿入検知コンタクト
２６ａ 半田付け脚
２６ｂ 固定部
２６ｃ 弾性変形脚
２６ｄ 着力端部
３０ 基板
３１ 信号ランド群
３２ 電源ランド
３３ 電源接地ランド
３６ 挿入検知ランド
４０ 制御回路
４１ 電源回路
４２ 挿入検知回路
ＭＣ メモリカード
Ｐ 電源ランド
Ｅ 接地ランド
Ｌ 信号ランド群[0001]
【Technical field】
The present invention relates to an apparatus for detecting insertion of an information recording card such as a memory card in a connector.
[0002]
[Prior art and its problems]
In the memory card connector, the recording information is written or read after detecting the insertion of the card. Conventionally, the insertion detection of the card has been performed by providing a pair of detection contacts (detection terminals) which are pressed and displaced by the card regardless of the power supply terminal or signal terminal of the connector. However, in various media card connectors that are becoming smaller in size, the pair of detection contacts provided for card insertion detection is a factor that hinders downsizing and a cost increase.
[0003]
OBJECT OF THE INVENTION
An object of the present invention is to obtain a device that can more easily detect the insertion of a card based on the above awareness of the problems of the conventional card insertion detection device.
[0004]
SUMMARY OF THE INVENTION
The present invention has been made based on the viewpoint of detecting insertion of a card by using a ground contact that is always provided in a card connector and is conductive to a ground land of the card.
That is, according to the present invention, a base member having a card insertion / removal portion having a grounding land, and a base member corresponding to the grounding land of the card are connected to the base member so as to conduct to the grounding land when the card is inserted. In the card connector having the ground contact provided, the base is connected to the ground contact at a part of the ground contact and the tip is freely formed to form the insertion detecting tongue, while the base member is pressed by the inserted card. It is characterized by supporting a detection contact that contacts the insertion detection tongue when displaced.
When the insertion detection tongue piece is provided on the ground contact and the detection contact paired with the insertion detection tongue piece is provided in this way, the card can be detected with almost no increase in space. Specifically, the insertion detecting tongue piece is provided in such a manner that it can be displaced independently from the ground contact so as not to be separated from the ground land when pressed by the detection contact. Even if a pressing displacement force is applied to the detection tongue, the contact between the ground contact and the ground land of the card can be maintained, and a stable detection operation can be guaranteed.
[0005]
It is desirable that the ground contact and the detection contact are arranged so as to be pressed and displaced in the order of the ground contact and the detection contact when the card is inserted into the insertion / removal portion of the base member.
[0006]
More specifically, the ground contact is in contact with the grounding land of the card formed on the fixed part to the base member, the elastically deformable leg extending from the fixed part, and the free end of the elastically deformable leg. The pressing contact end portion to be pressed and the insertion detection tongue formed on a part of the elastically deformable leg, the detection contact is a fixed portion to the base member, and the insertion detection of the ground contact from the fixed portion An elastically deformable leg extending on the tongue piece, and an attachment end formed on a free end of the elastically deformable leg portion, which makes the insertion detecting tongue piece and the elastically deformable leg portion contact when pressed and displaced by a card. desirable.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The illustrated embodiment is an embodiment in which the card insertion detecting device of the present invention is applied to a memory card connector. As shown in FIGS. 1 and 3, the synthetic resin base member 10 is fixed on a substrate 30. The base member 10 has a substantially U-shape having a contact support wall 11 and left and right insertion / removal walls 12 and 13 in plan view, and the contact support wall 11 and insertion / removal walls 12 and 13 An insertion / removal portion 14 for the memory card MC is formed. On the insertion / removal wall 13 side, a slide member 15 that contacts the memory card MC inserted into the insertion / removal portion 14 is supported so as to be movable in the insertion direction of the memory card MC. 16 is urged to move in the direction of ejecting the memory card MC.
[0008]
The position of the slide member 15 is controlled by the heart cam mechanism 18. That is, when the heart cam mechanism 18 moves the slide member 15 to the insertion end while pushing the slide member 15 with the memory card MC inserted into the insertion / removal unit 14, the heart cam mechanism 18 holds the slide member 15, that is, the memory card MC in the insertion position. When the memory card MC is moved again in the insertion end direction, the slide member 15 is moved to the discharge position by the force of the tension spring 16, and the memory card MC can be taken out. Such a heart cam mechanism 18 is well known, and the present invention can be applied to any connector that can move the memory card MC to the insertion position and the extraction position. Omitted.
[0009]
As is well known, the memory card MC is provided with an information storage circuit, and is provided with a signal land group L connected to the storage circuit, a power supply land P for supplying a read voltage, and a ground land E at an end of the memory card MC.
[0010]
On the other hand, the contact support wall 11 of the base member 10 supports a signal contact group 21 corresponding to the signal land group L, a power contact 22 corresponding to the power land P, and a ground contact 23 corresponding to the ground land E. Yes. The signal contact group 21 is electrically connected (soldered) to the signal land group 31 on the substrate 30, and each signal land group 31 is connected to a control circuit (signal circuit) 40. The power contact 22 and the ground contact 23 are electrically connected (soldered) to the power land 32 and the power ground land 33 on the substrate 30, respectively, and are connected to the power circuit 41. Reference numerals 24 and 25 are write-inhibiting contacts supported by the base member 10, and when both are pushed and made conductive by the write-inhibiting protrusion set in the memory card MC, the conduction signal is sent to the write-inhibiting lands 34 and 35. To the control circuit 40.
[0011]
The above is an example of a circuit configuration of a normal memory card connector. In the present embodiment, a detection device that detects insertion of a memory card MC by using a ground contact 23 and newly supporting a detection contact 26 on the contact support wall 11 of the base member 10 is configured. The relationship between the ground contact 23 and the insertion detection contact 26 will be described with reference to FIGS.
[0012]
The ground contact 23 includes a soldering leg 23 a soldered to the power supply ground land 33 of the substrate 30, a fixing portion 23 b embedded and fixed in the contact support wall 11 of the base member 10, and the fixing portion 23 b into the insertion / removal portion 14. An elastically deformable leg 23c that extends, and an applied contact end 23d formed at the free end of the tip of the elastically deformable leg 23c are provided. The force contact point end 23d is pressed by the ground land E of the memory card MC and comes into contact with the ground land E. At this time, the elastically deformable leg 23c is bent and a conduction pressure is generated.
[0013]
In the elastically deformable leg 23c, an insertion detecting tongue piece 23f extending from the fixed portion 23b side toward the applied contact end portion 23d side is formed by a U-shaped cut portion 23e. The insertion detection tongue 23f maintains the contact state between the force contact point end 23d and the ground land E in a state where the force contact point end 23d is pressed against the ground land E of the memory card MC. Only the insertion detecting tongue 23f is provided with independent elasticity capable of bending.
[0014]
On the other hand, the insertion detection contact 26 includes a soldering leg 26a soldered to the insertion detection land 36 of the substrate 30, a fixing portion 26b embedded and fixed in the contact support wall 11 of the base member 10, and a ground contact from the fixing portion 26b. The elastic deformation leg 26c extends on the insertion detection tongue piece 23f of the insertion detection portion 23, and a force application end portion 26d formed at the free end of the distal end of the elastic deformation leg 26c. The force-applying end portion 26d does not conduct with any portion of the ground contact 23 in the free state, but when pressed by the ground land E of the memory card MC (or the back surface of the memory card other than the ground land E), The contact 23 is elastically deformed toward the insertion detecting tongue piece 23f, and a part of the elastic deformation leg 26c is brought into contact with the insertion detecting tongue piece 23f. The force application end portion 26d is located closer to the contact support wall 11 than the force application contact end portion 23d. When the memory card MC is inserted into the insertion / removal portion 14 of the base member 10, the force application contact end portion 23d is first connected to the memory. The card MC is pressed and elastically deformed, and the applied force end portion 26d is then pressed by the memory card MC and elastically deformed.
[0015]
The soldering leg 26a of the insertion detection contact 26 described above is electrically connected (soldered) to the insertion detection land 36 on the substrate 30, and the insertion detection land 36 and the power supply ground land 33 are connected to the insertion detection circuit 42. ing.
[0016]
Therefore, the present apparatus configured as described above can detect the insertion of the memory card MC as follows. In a state before the memory card MC of FIG. 6 is inserted into the insertion / removal portion 14 of the base member 10, the ground contact 23 and the insertion detection contact 26 are not conductive, and the insertion detection circuit 42 does not output an insertion detection signal. . When the memory card MC is inserted from the state shown in FIG. 6, first, the ground land E comes into contact with the applied contact end portion 23d of the ground contact 23 to bend the elastic deformation leg 23c downward in the drawing. Therefore, the ground land E of the memory card MC is grounded at this insertion stage (FIG. 7).
[0017]
Further, when the memory card MC is inserted, the ground land E contacts the force-applying end portion 26d while maintaining the conductive state with the force-contacting contact end portion 23d of the ground contact 23, and the elastic deformation leg 26c is moved downward in the figure. To bend. Then, a part of the elastically deformable leg 26c is electrically connected to the insertion detecting tongue piece 23f, and the insertion detecting circuit 42 detects the insertion of the memory card MC (FIG. 8). In other words, the insertion detection tongue 23f can be displaced independently from the ground contact 23 so as not to separate the ground contact 23 from the ground land E when pressed by the detection contact 26. In other words, the insertion detection tongue 23f does not impede the conduction relationship between the force contact point end 23d and the ground land E of the memory card MC when it is pushed and elastically deformed by the elastic deformation leg 26c.
[0018]
When the memory card MC is inserted, the power contact 22 comes into contact with the power land P of the memory card MC, a read voltage is applied to the memory card MC through the power circuit 41, and a plurality of signal contact groups 21 are simultaneously connected to the memory card MC. The information stored in the information storage circuit of the memory card MC is read out to the control circuit 40 in contact with the signal land group L of the MC. This read operation is not different from the conventional product.
[0019]
In the above embodiment, the insertion detection tongue 23f of the ground contact 23 is provided in the elastic deformation leg 23c by forming the U-shaped cut portion 23e on the elastic deformation leg 23c. It is also possible to provide 23f in parallel with the elastically deformable legs 23c. In the above embodiment, the ground contact 23 is the ground contact of the power supply circuit 41. However, if the ground contact 23 is grounded, it need not be the ground contact of the power supply circuit. FIG. 9 schematically shows the embodiment. The card insertion detection device can be applied to a general small / thin card detaching mechanism other than a memory card connector.
[0020]
【The invention's effect】
As described above, according to the present invention, since one of a pair of detection contacts necessary for detecting card insertion can be constituted by a ground contact, a small card insertion detecting device with a small number of parts can be obtained. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment in which a card insertion detecting device according to the present invention is applied to a memory card connector.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of the same.
FIG. 4 is a perspective view showing a relationship between a ground contact and a detection contact supported by a base member.
FIG. 5 is a plan view of the same.
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a cross-sectional view showing a state in which only the ground contact is pressed and displaced by the card along the line VI-VI in FIG. 5;
8 is a cross-sectional view taken along the line VI-VI in FIG. 5 in a state where both the ground contact and the detection contact are pressed and displaced by the card.
FIG. 9 is a perspective view corresponding to FIG. 1 and showing another aspect of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Base member 11 Contact support wall 12 13 Insertion / removal wall 14 Insertion / removal part 15 Slide member 16 Tension spring 18 Heart cam mechanism 21 Signal contact group 22 Power supply contact 23 Ground contact 23a Soldering leg 23b Fixing part 23c Elastic deformation leg 23d Applying contact end Part 26 Insertion detection contact 26a Soldering leg 26b Fixing part 26c Elastic deformation leg 26d Applying end part 30 Substrate 31 Signal land group 32 Power supply land 33 Power supply ground land 36 Insertion detection land 40 Control circuit 41 Power supply circuit 42 Insertion detection circuit MC Memory card P Power land E Grounding land L Signal land group

Claims (4)

接地ランドを有するカードの挿脱部を備えたベース部材；
このベース部材に、上記カードの接地ランドに対応させて、該カードが挿入されたとき該接地ランドに導通するように設けた接地コンタクト；
この接地コンタクトの一部に、基部を該接地コンタクトに接続し先端を自由にして形成した挿入検知舌片；
上記ベース部材に、挿入されたカードにより押圧変位されたとき、上記挿入検知舌片に接触するように支持した検知コンタクト；及び
この挿入検知舌片と検知コンタクトとの接触によりカードの挿入を検知する検知回路；
を備えたことを特徴とするカード挿入検知装置。A base member having a card insertion / removal portion having a ground land;
A ground contact provided on the base member so as to correspond to the ground land of the card so as to conduct to the ground land when the card is inserted;
An insertion detecting tongue formed on a part of the ground contact with a base connected to the ground contact and having a free end;
A detection contact which is supported so as to contact the insertion detection tongue when the base member is pressed and displaced by the inserted card; and the insertion of the card is detected by contact between the insertion detection tongue and the detection contact. Detection circuit;
A card insertion detection device comprising: 請求項１記載のカード挿入検知装置において、上記挿入検知舌片は、上記検知コンタクトによって押圧されたとき、接地コンタクトを接地ランドから離間させない程度に該接地コンタクトから独立して変位可能であるカード挿入検知装置。2. The card insertion detecting device according to claim 1, wherein when the insertion detection tongue is pressed by the detection contact, the card insertion is displaceable independently from the ground contact so as not to separate the ground contact from the ground land. Detection device. 請求項１または２記載のカード挿入検知装置において、接地コンタクトと検知コンタクトは、カードがベース部材の挿脱部に挿入されるとき、接地コンタクト、検知コンタクトの順に押圧変位されるカード挿入検知装置。3. The card insertion detection device according to claim 1, wherein the ground contact and the detection contact are pressed and displaced in the order of the ground contact and the detection contact when the card is inserted into the insertion / removal portion of the base member. 請求項１ないし３のいずれか１項記載のカード挿入検知装置において、接地コンタクトは、ベース部材への固定部と、この固定部から伸びる弾性変形脚部と、この弾性変形脚部の自由端部に形成した、カードの接地ランドに接触して押圧される着力接点端部と、上記弾性変形脚の一部に形成した上記挿入検知舌片とを備え、
上記検知コンタクトは、ベース部材への固定部と、この固定部から上記接地コンタクトの挿入検知舌片上に伸びる弾性変形脚と、この弾性変形脚部の自由端部に形成した、カードによって押圧変位されたとき上記挿入検知舌片と弾性変形脚部を接触させる着力端部とを備えているカード挿入検知装置。4. The card insertion detecting device according to claim 1, wherein the ground contact includes a fixed portion to the base member, an elastically deformable leg extending from the fixed portion, and a free end of the elastically deformable leg. Formed on the ground contact land of the card and pressed against the contact land, and the insertion detection tongue formed on a part of the elastic deformation leg,
The detection contact is pressed and displaced by a card formed on a fixed portion to the base member, an elastically deformable leg extending from the fixed portion onto an insertion detecting tongue of the ground contact, and a free end of the elastically deformable leg portion. A card insertion detection device comprising: an insertion end portion that brings the insertion detection tongue piece into contact with the elastically deformable leg portion.
JP2000250470A 2000-05-31 2000-08-22 Card insertion detection device Expired - Fee Related JP4436962B2 (en)

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JP2000250470A JP4436962B2 (en) 2000-05-31 2000-08-22 Card insertion detection device
KR10-2001-0015743A KR100400196B1 (en) 2000-05-31 2001-03-26 apparatus for detecting card insertion

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JP2000-161689 2000-05-31
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US7511850B2 (en) * 2003-02-26 2009-03-31 Canon Kabuhsiki Kaisha Storage media control circuit and apparatus including same
JP4428211B2 (en) * 2004-11-26 2010-03-10 ソニー株式会社 connector
JP2009176510A (en) * 2008-01-23 2009-08-06 Honda Tsushin Kogyo Co Ltd Memory card connector
CN102709725B (en) * 2012-05-23 2016-08-24 中兴通讯股份有限公司 SIM deck, mobile terminal and the method for identification SIM card hot plug

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JPS62208192A (en) * 1986-03-10 1987-09-12 Nec Corp Method for detecting loading/unloading of ic card
JPH02307182A (en) * 1989-05-23 1990-12-20 Hitachi Maxell Ltd Ic card reader/writer
JPH06139414A (en) * 1992-10-28 1994-05-20 Sony Corp Ic card detecting device
US5945662A (en) * 1995-03-22 1999-08-31 Framatome Connectors International Connector for a smart card reader apparatus

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