JPH02185496A - Memory card - Google Patents
Memory cardInfo
- Publication number
- JPH02185496A JPH02185496A JP1006319A JP631989A JPH02185496A JP H02185496 A JPH02185496 A JP H02185496A JP 1006319 A JP1006319 A JP 1006319A JP 631989 A JP631989 A JP 631989A JP H02185496 A JPH02185496 A JP H02185496A
- Authority
- JP
- Japan
- Prior art keywords
- insulating frame
- peripheral edge
- circuit board
- printed circuit
- connector
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 230000015654 memory Effects 0.000 claims abstract description 11
- 230000035515 penetration Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location 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〕
本発明はパーソナルコンピュータ、ハンディターミナル
、ワードプロセッサ等の外部記憶装置に使４用するメモ
リカードに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a memory card used in an external storage device such as a personal computer, a handy terminal, or a word processor.
従来この種のメモリカードは第４図に示す如く印刷配線
基板１上にメモリＩＣ２−１，２−２゜・・・およびデ
コーダ等の制御用ＩＣを搭載してなる印刷回路板をコネ
クタ３と接続し、強度を持たせるためプラスチックによ
る絶縁性フレーム４に嵌め込み第１の金属パネル５−１
、第２の金属パネル５−２を取り付け、接着材等で固定
しメモリカードを構成していた。又金属ばね６−１．６
−２、・・・は表裏両面の第１．第２の金属パネル間を
電気的に接続し、静電気を蓄積しないようにするための
ものである。又ＳＲＡＭカードでは一旦記憶したデータ
を保存するために、例えばコイン型リチウム電池を内蔵
するメモリカードもある。Conventionally, this type of memory card has a connector 3 and a printed circuit board on which memory ICs 2-1, 2-2... and control ICs such as a decoder are mounted on a printed wiring board 1, as shown in FIG. A first metal panel 5-1 is fitted into an insulating frame 4 made of plastic for connection and strength.
, a second metal panel 5-2 was attached and fixed with an adhesive or the like to constitute a memory card. Also metal spring 6-1.6
-2, . . . are the first . This is to electrically connect the second metal panels to prevent static electricity from accumulating. Furthermore, some SRAM cards have a built-in coin-type lithium battery, for example, in order to save data once stored.
上述した従来のメモリカードにおいて金属パネルは、通
常、デザインを印刷するため、絶縁材で保護されるが、
金属パネルの外周縁は、プレス加エ等により形成される
ので金属がむき出しに出ている。このため人体等に蓄積
された静電気が放電しやすい、また、金属パネル外周と
プラスチック等による絶縁性フレームの間は静電気が入
り込みやすくその近くに印刷回路板上の配線導体もしく
は接地導体があればそこに放電し、メモリカードに記憶
されたデータが破壊されたり、メモリＩＣ自体が破壊迄
に到る事がある。In the conventional memory cards mentioned above, the metal panel is usually protected with an insulating material to print the design.
The outer peripheral edge of the metal panel is formed by pressing, etc., so the metal is exposed. For this reason, static electricity accumulated in the human body is likely to be discharged, and static electricity is likely to enter between the outer periphery of the metal panel and the insulating frame made of plastic, etc., if there is a wiring conductor or ground conductor on a printed circuit board nearby. This may cause the data stored on the memory card to be destroyed or the memory IC itself to be destroyed.
また、ＳＲＡＭカードのデータ保存用リチウム電池は、
記憶保持特電流が流れ消耗するため通常は電池を取替る
ことができる構造になっている。In addition, the lithium battery for data storage in SRAM cards is
Normally, the structure is such that the battery can be replaced because a memory retention special current flows and the battery is consumed.
このため電池取出用の電池ホルダーとメモリカードの絶
縁性フレームの間ですき間ができる。この場合電池への
静電気放電が起こらない様に設計することが必要である
がこのすき間を通して静電気放電が起りやすい。この結
果は前述と同様データ又はＩＣの破壊へつながる。This creates a gap between the battery holder for removing the battery and the insulating frame of the memory card. In this case, it is necessary to design the battery so that electrostatic discharge does not occur, but electrostatic discharge is likely to occur through this gap. This result leads to data or IC destruction as described above.
本発明のメモリカードは、印刷配線板に電気部品を取り
付けてメモリ回路を構成した印刷回路板をコネクタにプ
ラグインしたのち絶縁性フレームに嵌め込み、間に導電
性のばねを挟んで前記絶縁性フレームの表裏にそれぞれ
第１の金属パネル及び第２の金属パネルを取り付けてな
るメモリカードにおいて、前記絶縁性フレームは、前記
印刷回路板のコネクタに挿入された部分を除き周縁部の
表面、裏面及び側面を覆う周縁保護部を有しているとい
うものである。In the memory card of the present invention, a printed circuit board in which a memory circuit is configured by attaching electrical parts to a printed circuit board is plugged into a connector and then fitted into an insulating frame, and a conductive spring is sandwiched between the printed circuit boards and the insulating frame. In a memory card in which a first metal panel and a second metal panel are attached to the front and back sides of the printed circuit board, respectively, the insulating frame covers the front, back, and side surfaces of the peripheral edge of the printed circuit board except for the portion inserted into the connector. It has a peripheral edge protection part that covers the periphery.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の第１の実施例の破砕断面斜視図、第２
図（ａ）は第１の実施例に使用する絶縁性フレームの上
面図、第２図（ｂ）及び（ｃ）はそれぞれ第２図（ａ）
のＹ、−Ｙ、’線断面図及びＹ２−Ｙ２′線断面図であ
る。FIG. 1 is a perspective view of a fractured cross section of the first embodiment of the present invention, and FIG.
Figure (a) is a top view of the insulating frame used in the first embodiment, and Figures 2 (b) and (c) are respectively Figure 2 (a).
FIG.
この実施例は印刷配線板１にメモリＩＣ２−１，２−２
，・・・等の電気部品を取り付けてメモリ回路を構成し
た印刷回路板をコネクタ３に１ラクインしたのち絶縁性
フレーム１４に嵌め込み、間に金属ばね６−１．６−２
．・・・を挟んで絶縁性フレーム１４の表裏にそれぞれ
第１の金属パネル５−１及び第２の金属パネル５−２を
取り付けてなるメモリカードにおいて、絶縁性フレーム
１４は、前述の印刷回路板のコネクタ１３に挿入された
部分を除き周縁部の表面、裏面及び側面を覆うプラスチ
ック製の周縁保護部１４ａを有しているというものであ
る。なお８は電池挿入部である。In this embodiment, the printed wiring board 1 has memory ICs 2-1 and 2-2.
A printed circuit board on which a memory circuit is constructed by attaching electrical parts such as , .
．． In a memory card in which a first metal panel 5-1 and a second metal panel 5-2 are attached to the front and back sides of an insulating frame 14, respectively, with . It has a peripheral edge protection part 14a made of plastic that covers the front, back, and side surfaces of the peripheral edge except for the part inserted into the connector 13. Note that 8 is a battery insertion part.
第４図の従来例と異なり周縁保護部１４ａは印刷回路板
の表面にも廻り込んでいるので、静電気の放電径路が長
くなり静電気耐圧が向上する。Unlike the conventional example shown in FIG. 4, the peripheral edge protection portion 14a extends around the surface of the printed circuit board, so that the discharge path of static electricity is lengthened and the static electricity withstand voltage is improved.
静電気放電の侵入径路の距離を３１１にとることにより
実用レベル１０ｋＶの静電気放電を防止できる。By setting the distance of the electrostatic discharge penetration path to 311, it is possible to prevent electrostatic discharge at a practical level of 10 kV.
尚６−１．６−２の金属ばねは捲線形のばねの一例を示
したが、金属パネル５−１．５−２間を短絡させること
ができる板ばねであってもよい。Although the metal spring 6-1.6-2 is an example of a coiled spring, it may also be a plate spring that can short-circuit between the metal panels 5-1 and 5-2.
第３図（ａ）は第２の実施例に使用する絶縁性フレーム
の上面図、第３図（ｂ）は第３図（ａ）のＹ−Ｙ’線断
面図である。FIG. 3(a) is a top view of the insulating frame used in the second embodiment, and FIG. 3(b) is a sectional view taken along the line Y-Y' in FIG. 3(a).
第１の実施例との相違は電池挿入部がないことであり電
池が不要なマスクＲＯＭカート又は１度だけ書込み可能
なＯＴＰ ＲＯＭカード等に適している。The difference from the first embodiment is that there is no battery insertion section, and this embodiment is suitable for mask ROM carts that do not require batteries or OTP ROM cards that can be written only once.
以上説明したように本発明は、印刷配線板の周縁部の表
面、裏面及び側面を覆う周縁保護部を有しているので、
外周部からの静電気放電の侵入を防止する事ができ、メ
モリカードの静電気耐圧を向上できる効果がある。As explained above, the present invention has a peripheral edge protection part that covers the front surface, back surface, and side surface of the peripheral edge of a printed wiring board.
This has the effect of preventing electrostatic discharge from entering from the outer periphery and improving the electrostatic withstand voltage of the memory card.
第１図は本発明の第１の実施例の破砕断面斜視図、第２
図（ａ）は第１の実施例に使用する絶縁性フレームの上
面図、第２図（ｂ）及び（Ｃ）はそれぞれ第２図（ａ）
のＹ、−Ｙ、’線断面図及びＹ２−Ｙ２’線断面図、第
３図（ａ）は第２の実施例に使用する絶縁性フレームの
上面図、第３図（ｂ）は第３図（ａ）のＹ−Ｙ’線断面
図、第４図は従来例の破砕断面斜視図である。
１・・・印刷配線板、２−１．２−２・・・メモリＩＣ
ｌ３・・・コネクタ、４，１４．２４・・・絶縁性フレ
ーム、１４ａ・・・周縁保護部、５−１・・・第１の金
属フレーム、５−２・・・第２の金属フレーム、６−１
６−２・・・金属ばね、７−１．７−２・・・ばね搭載
孔、８・・・電池挿入部。FIG. 1 is a perspective view of a fractured cross section of the first embodiment of the present invention, and FIG.
Figure (a) is a top view of the insulating frame used in the first embodiment, and Figures 2 (b) and (C) are respectively Figure 2 (a).
3(a) is a top view of the insulating frame used in the second embodiment, and FIG. 3(b) is a top view of the insulating frame used in the second embodiment. FIG. 4 is a sectional view taken along the Y-Y' line in FIG. 1...Printed wiring board, 2-1.2-2...Memory IC
l3... Connector, 4, 14.24... Insulating frame, 14a... Peripheral protection part, 5-1... First metal frame, 5-2... Second metal frame, 6-1
6-2...Metal spring, 7-1.7-2...Spring mounting hole, 8...Battery insertion part.
Claims (1)
した印刷回路板をコネクタにプラグインしたのち絶縁性
フレームに嵌め込み、間に導電性のばねを挟んで前記絶
縁性フレームの表裏にそれぞれ第１の金属パネル及び第
２の金属パネルを取り付けてなるメモリカードにおいて
、前記絶縁性フレームは、前記印刷回路板のコネクタに
挿入された部分を除き周縁部の表面、裏面及び側面を覆
う周縁保護部を有していることを特徴とするメモリカー
ド。A printed circuit board, in which a memory circuit is configured by attaching electrical components to the printed wiring board, is plugged into a connector, and then fitted into an insulating frame, and a conductive spring is sandwiched between the printed circuit boards, and first conductive springs are placed on the front and back sides of the insulating frame, respectively. In the memory card having a metal panel and a second metal panel attached thereto, the insulating frame has a peripheral edge protection portion that covers the front, back, and side surfaces of the peripheral edge except for the portion inserted into the connector of the printed circuit board. A memory card that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1006319A JPH02185496A (en) | 1989-01-13 | 1989-01-13 | Memory card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1006319A JPH02185496A (en) | 1989-01-13 | 1989-01-13 | Memory card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02185496A true JPH02185496A (en) | 1990-07-19 |
Family
ID=11635045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1006319A Pending JPH02185496A (en) | 1989-01-13 | 1989-01-13 | Memory card |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02185496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0452078U (en) * | 1990-09-10 | 1992-05-01 |
-
1989
- 1989-01-13 JP JP1006319A patent/JPH02185496A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0452078U (en) * | 1990-09-10 | 1992-05-01 |
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