JPH02254584A - Connection structure between ic memory card and system side connector - Google Patents
Connection structure between ic memory card and system side connectorInfo
- Publication number
- JPH02254584A JPH02254584A JP1079214A JP7921489A JPH02254584A JP H02254584 A JPH02254584 A JP H02254584A JP 1079214 A JP1079214 A JP 1079214A JP 7921489 A JP7921489 A JP 7921489A JP H02254584 A JPH02254584 A JP H02254584A
- Authority
- JP
- Japan
- Prior art keywords
- memory card
- side connector
- connector
- system side
- card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract description 15
- 230000005611 electricity Effects 0.000 abstract description 14
- 238000007599 discharging Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、揮発性半導体メモリを内蔵するＩＣメモリ
カードを外部機器のシステム側コネクタへ挿入する際の
接続構造に関するもので、人体に帯電した静電気を無理
なく放電させるものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a connection structure for inserting an IC memory card containing a volatile semiconductor memory into a system-side connector of an external device. This allows static electricity to be discharged easily.
従来この種の構造として、第３図に示す様なものがあっ
た０図において、１はメモリカード、２はシステム側コ
ネクタ、２ａはシステム側コネクタのカードガイド部、
３はメモリカードコネクタ、４はメモリカードコネクタ
３内に設けられたコンタクトバネ、５はシステム側コネ
クタ２内に設けられたコンタクトピン、６はメモリカー
ドパネル、７はメモリカードフレームを示す。Conventionally, this type of structure was as shown in FIG. 3. In FIG. 0, 1 is a memory card, 2 is a system side connector, 2a is a card guide part of the system side connector,
3 is a memory card connector, 4 is a contact spring provided in the memory card connector 3, 5 is a contact pin provided in the system side connector 2, 6 is a memory card panel, and 7 is a memory card frame.
次に人手によるメモリカードの外部機器への挿入動作に
ついて説明する。第３図において、静電気を帯電した人
手によって保持されたメモリカード１を、外部機器のシ
ステム側コネクタ２へ挿入する際、最初にメモリカード
フレーム７とシステム側コネクタ２のカードガイド部２
ａが接触するが、このメモリカードフレーム７とカード
ガイド部２ａは、いずれも絶縁性樹脂により構成されて
いるために、人体に帯電した静電気の放電は生じない−
。Next, the operation of manually inserting a memory card into an external device will be explained. In FIG. 3, when inserting the memory card 1 held by an electrostatically charged hand into the system side connector 2 of an external device, first the memory card frame 7 and the card guide part 2 of the system side connector 2 are inserted.
Although the memory card frame 7 and the card guide portion 2a are both made of insulating resin, no discharge of static electricity from the human body occurs.
.
そして、その後メモリカード１のシステム側コネクタ２
への挿入が進み、メモリカード側のコンタクトバネ４と
、システム側コネクタのコンタクトビン５が接触する瞬
間、もしくは直前に、このコネクタコンタクトバネ４と
コンタクトビン５を通して人体の静電気が放電される。Then, after that, the system side connector 2 of the memory card 1
As insertion progresses, static electricity from the human body is discharged through the connector contact spring 4 and the contact pin 5 at or just before the contact spring 4 on the memory card side and the contact pin 5 on the system side connector come into contact.
その結果、メモリカード１内部の揮発性半導体メモリ素
子及びその他の回路素子を実装した配線基板のパターン
上を、瞬時ではあるが過大な静電気放電電流が流れる。As a result, an instantaneous but excessive electrostatic discharge current flows over the pattern of the wiring board on which the volatile semiconductor memory element and other circuit elements inside the memory card 1 are mounted.
そして、この放電電流の大きさ、あるいは放電電流の流
れる配線パターンの経路によっては、揮発性半導体メモ
リ素子のコントロール入力端子の電位が変動し、内部保
持データの破壊が生じる。Then, depending on the magnitude of this discharge current or the route of the wiring pattern through which the discharge current flows, the potential of the control input terminal of the volatile semiconductor memory element fluctuates, causing destruction of internally held data.
従来のＩＣメモリカードとシステム側コネクタの接続構
造は、以上の様に構成されているので、静電気を帯電し
た人手によるメモリカード１の外部機器への挿入に際し
、メモリカードコネクタ３のコンタクトバネ４を介して
静電気放電が生じ、メモリカード１内の揮発性半導体メ
モリ素子の保持データが破壊されるという問題点があっ
た。The conventional connection structure between an IC memory card and a system-side connector is configured as described above, so when inserting the memory card 1 into an external device by hand charged with static electricity, the contact spring 4 of the memory card connector 3 must be There has been a problem in that electrostatic discharge occurs through the memory card 1, and data held in the volatile semiconductor memory element in the memory card 1 is destroyed.
この発明は、上記従来の問題点を解消するためになされ
たもので、メモリカードを外部機器へ挿入する際の、人
体の静電気放電によるカード内保持データの破壊を防止
することを目的とする。The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to prevent data held in the card from being destroyed due to electrostatic discharge from the human body when a memory card is inserted into an external device.
この発明に係るＩＣメモリカードとシステム側コネクタ
との接続構造は、揮発性半導体メモリ素子を内蔵するＩ
Ｃメモリカードのメモリカードコネクタと外部機器のシ
ステム側コネクタとの電気的接続を図るものであって、
前記ＩＣメモリカードのパネルを導電体で形成し、この
パネルと同電位となる静電気放電電極を前記ＩＣメモリ
カードのコネクタ側の端側面部に設けるとともに、シス
テムのフレームグランド又はシグナルグランドと同電位
の導電体を前記システム側コネクタのカードガイドの内
部側面部に設けたものである。The connection structure between an IC memory card and a system side connector according to the present invention is an IC memory card having a built-in volatile semiconductor memory element.
A device for electrically connecting a memory card connector of a C memory card and a system side connector of an external device,
The panel of the IC memory card is formed of a conductive material, and an electrostatic discharge electrode having the same potential as the panel is provided on the side surface of the connector side of the IC memory card. A conductor is provided on the inner side surface of the card guide of the system side connector.
この発明において、ＩＣメモリカードをシステム側コネ
クタに挿入する際、前記メモリカードコネクタとシステ
ム側コネクタの相互コンタクト部が接触する前に、ＩＣ
メモリカードの静電気放電電極がシステム側コネクタの
導電性カードガイド部に接触して、帯電した静電気を放
電する。In this invention, when inserting the IC memory card into the system side connector, before the mutual contact portions of the memory card connector and the system side connector come into contact with each other, the IC memory card is inserted into the system side connector.
The electrostatic discharge electrode of the memory card comes into contact with the conductive card guide portion of the system-side connector to discharge the static electricity.
以下、この発明の一実施例を図について説明する。第１
図において、１は揮発性半導体メモリ素子を内蔵するメ
モリカード、２はこのメモリカード１を外部機器へ接続
するためのシステム側コネクタ、３はメモリカードコネ
クタ、４はこのメモリカードコネクタ３に設けられたコ
ンタクトバネ、５はシステム側コネクタ２に設けられた
コンタクトビン、６は導電体のメモリカードパネル、７
は絶縁性樹脂よりなるメモリカードフレーム、８は前記
メモリカード１の前端側面部に設けられた静電気放電電
極であり、前記メモリカードパネル６と同電位となして
いる。９はシステム側コネクタ２に設けられた導電性カ
ードガイドであり、システムのフレームグランドもしく
はシグナルグランドと同電位となしている。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is a memory card with a built-in volatile semiconductor memory element, 2 is a system side connector for connecting this memory card 1 to an external device, 3 is a memory card connector, and 4 is a connector provided on this memory card connector 3. 5 is a contact pin provided in the system side connector 2; 6 is a conductive memory card panel; 7 is a contact spring;
Reference numeral 8 indicates a memory card frame made of insulating resin, and 8 indicates an electrostatic discharge electrode provided on the front end side surface of the memory card 1, which is at the same potential as the memory card panel 6. Reference numeral 9 denotes a conductive card guide provided on the system side connector 2, which is at the same potential as the frame ground or signal ground of the system.
次に、第２図により、上記実施例におけるＩＣメモリカ
ード挿入時の動作を説明する。すなわち、静電気を帯電
した人手によってメモリカードパネル６を保持すると、
メモリカード１の静電気放電電極８は、人体の静電気と
同電位となる。そして、メモリカード１を外部機器へ挿
入する際、先ず最初にメモリカードｌの静電気放電電極
８と、システム側コネクタ２の導電性カードガイド９が
接触する。この結果、人体に帯電していた静電気は、人
手→メモリカードパネル６→靜電気放電電極８→導電性
カードガイド９を介して、外部機器のフレームグランド
、もしくはシグナルグランドに放電される。さらに挿入
が進み、メモリカードコネクタのコンタクトバネ４とシ
ステム側コネクタのコンタクトビン５が接触する瞬間ま
でには、人体の静電気は静電負放電電ｆ！８及び導電性
カードガイド９を介して、確実に放電されているため、
メモリカードコネクタのコンタクトバネ４及びシステム
側コネクタのコンタクトビン５の間では、静電気放電は
生じない、従って、ＩＣメモリカード１内部の揮発性半
導体メモリ素子及びその他の回路素子を実装した配線基
板のパターン上を、静電気放電電流が流れることもなく
、揮発性半導体メモリ素子の内部保持データの破壊は生
じない。Next, referring to FIG. 2, the operation when inserting the IC memory card in the above embodiment will be explained. That is, when the memory card panel 6 is held by a hand charged with static electricity,
The electrostatic discharge electrode 8 of the memory card 1 has the same potential as the static electricity of the human body. When the memory card 1 is inserted into an external device, the electrostatic discharge electrode 8 of the memory card 1 and the conductive card guide 9 of the system connector 2 first come into contact. As a result, the static electricity charged on the human body is discharged to the frame ground or signal ground of the external device via the human hand, the memory card panel 6, the static discharge electrode 8, and the conductive card guide 9. As the insertion progresses further, by the time the contact spring 4 of the memory card connector comes into contact with the contact pin 5 of the system connector, the static electricity in the human body has increased to an electrostatic negative discharge voltage f! 8 and the conductive card guide 9, the discharge is ensured.
Electrostatic discharge does not occur between the contact spring 4 of the memory card connector and the contact pin 5 of the system side connector. Therefore, the pattern of the wiring board on which the volatile semiconductor memory element and other circuit elements inside the IC memory card 1 are mounted. No electrostatic discharge current flows through the device, and data held internally in the volatile semiconductor memory device is not destroyed.
以上の様にこの発明によれば、ＩＣメモリカードにメモ
リカードパネルと同電位の静電気放電電極を、かつ、シ
ステム側コネクタにはシステムのフレームグランドもし
くはシグナルグランドと同電位の導電性カードガイドを
設けたことにより、カード挿入時の人体の静電気放電に
よるカード内部の揮発性半導体メモリ素子のデータ破壊
の生じない、信頼性の高いＩＣメモリカードシステムを
提供することが出来る。As described above, according to the present invention, the IC memory card is provided with an electrostatic discharge electrode having the same potential as the memory card panel, and the system side connector is provided with a conductive card guide having the same potential as the frame ground or signal ground of the system. As a result, it is possible to provide a highly reliable IC memory card system in which data in the volatile semiconductor memory element inside the card is not destroyed due to electrostatic discharge of the human body when the card is inserted.
第１図（Ａ）、（Ｂ）はこの発明の一実施例によるＩＣ
メモリカード及びシステム側コネクタを示す斜視図、第
２図は前記ＩＣメモリカードをシステム側コネクタに挿
入する動作を示す一部断面平面図、第３図は従来のＩＣ
メモリカードとシステム側コネクタの接続構造を示す一
部断面平面図である。
図中、１はメモリカード、２はシステム側コネクタ、３
はメモリカードコネクタ、４はコンタクトバネ、５はコ
ンタクトビン、６はメモリカードパネル、７はメモリカ
ードフレーム、８は静電気放電電極、９は導電性カード
ガイドである。
なお、図中同一符号は同−又は相当部分を示す。FIGS. 1(A) and 1(B) show an IC according to an embodiment of the present invention.
FIG. 2 is a partially sectional plan view showing the operation of inserting the IC memory card into the system connector; FIG. 3 is a perspective view of a conventional IC
FIG. 2 is a partially sectional plan view showing a connection structure between a memory card and a system-side connector. In the figure, 1 is a memory card, 2 is a system side connector, and 3 is a memory card.
4 is a memory card connector, 4 is a contact spring, 5 is a contact bin, 6 is a memory card panel, 7 is a memory card frame, 8 is an electrostatic discharge electrode, and 9 is a conductive card guide. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
のメモリカードコネクタと外部機器のシステム側コネク
タとの電気的接続を行う接続構造において、前記ＩＣメ
モリカードのパネルを導電体で形成し、このパネルと同
電位となる静電気放電電極を前記ＩＣメモリカードのコ
ネクタ側の端側面部に設けるとともに、システムのフレ
ームグランド又はシグナルグランドと同電位の導電体を
前記システム側コネクタのカードガイド部の内部側画部
に設けたことを特徴とするＩＣメモリカードとシステム
側コネクタとの接続構造。In a connection structure for electrically connecting a memory card connector of an IC memory card containing a volatile semiconductor memory element to a system-side connector of an external device, the panel of the IC memory card is formed of a conductive material, and the panel is made of a conductive material. An electrostatic discharge electrode having a potential is provided on the end side surface of the IC memory card on the connector side, and a conductor having the same potential as the frame ground or signal ground of the system is provided on the inner side of the card guide section of the system side connector. A connection structure between an IC memory card and a system side connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079214A JPH0795338B2 (en) | 1989-03-29 | 1989-03-29 | Connection structure between IC memory card and system side connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079214A JPH0795338B2 (en) | 1989-03-29 | 1989-03-29 | Connection structure between IC memory card and system side connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02254584A true JPH02254584A (en) | 1990-10-15 |
| JPH0795338B2 JPH0795338B2 (en) | 1995-10-11 |
Family
ID=13683682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1079214A Expired - Fee Related JPH0795338B2 (en) | 1989-03-29 | 1989-03-29 | Connection structure between IC memory card and system side connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795338B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04279990A (en) * | 1991-03-07 | 1992-10-06 | Canon Inc | Card connector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59149598A (en) * | 1983-07-06 | 1984-08-27 | 株式会社東芝 | Medium receiver |
| JPS60163597U (en) * | 1984-04-03 | 1985-10-30 | カシオ計算機株式会社 | Electronic equipment with a memory card slot |
-
1989
- 1989-03-29 JP JP1079214A patent/JPH0795338B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59149598A (en) * | 1983-07-06 | 1984-08-27 | 株式会社東芝 | Medium receiver |
| JPS60163597U (en) * | 1984-04-03 | 1985-10-30 | カシオ計算機株式会社 | Electronic equipment with a memory card slot |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04279990A (en) * | 1991-03-07 | 1992-10-06 | Canon Inc | Card connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0795338B2 (en) | 1995-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
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| LAPS | Cancellation because of no payment of annual fees |