JP3301406B2 - Ejector for insertion and removal of printed circuit board and structure to prevent electrostatic breakdown of printed circuit board - Google Patents
Ejector for insertion and removal of printed circuit board and structure to prevent electrostatic breakdown of printed circuit boardInfo
- Publication number
- JP3301406B2 JP3301406B2 JP10374999A JP10374999A JP3301406B2 JP 3301406 B2 JP3301406 B2 JP 3301406B2 JP 10374999 A JP10374999 A JP 10374999A JP 10374999 A JP10374999 A JP 10374999A JP 3301406 B2 JP3301406 B2 JP 3301406B2
- Authority
- JP
- Japan
- Prior art keywords
- printed circuit
- circuit board
- ejector
- electronic device
- plastic
- 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.)
- Expired - Fee Related
Links
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
- Elimination Of Static Electricity (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プリント基板を電
子装置から挿抜するための挿抜用イジェクタおよびプリ
ント基板の静電破壊防止構造に関し、特に静電破壊防止
機能付き挿抜用イジェクタとプリント基板の静電破壊防
止構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector for inserting and removing a printed circuit board from an electronic device, and a structure for preventing electrostatic discharge of the printed circuit board. It relates to a structure for preventing electrical breakdown.
【０００２】[0002]
【従来の技術】一般に人間に蓄積される静電気は１ｋＶ
〜４０ｋＶ程度になることが知られている。このような
高圧静電気を帯電したメンテナンス作業者が電子機器、
特に電子回路を実装したプリント基板に触れることで帯
電した静電気が人体からプリント基板へ短時間に放電さ
れ、プリント基板上の電子回路の誤動作を引き起こした
り、さらには破壊してしまう恐れがある。2. Description of the Related Art Generally, static electricity accumulated in humans is 1 kV.
It is known that it becomes about 40 kV. Maintenance workers charged with such high-voltage static electricity are
In particular, static electricity charged by touching a printed circuit board on which an electronic circuit is mounted is discharged from a human body to the printed circuit board in a short time, which may cause a malfunction of the electronic circuit on the printed circuit board or even destroy it.
【０００３】静電気の放電による電子回路障害を防止す
るため、プリント基板交換等のメンテナンス作業時に
は、作業基準としてリストバンドでアースをとり人体か
ら帯電静電気を除去しながら作業するよう義務づけられ
ている。[0003] In order to prevent electronic circuit failure due to static electricity discharge, it is obligatory to perform work while removing charged static electricity from a human body by grounding with a wrist band as a work standard during maintenance work such as replacement of a printed circuit board.
【０００４】しかし実際には、リストバンドの装着を忘
れたまま作業を行うケースが多々あり、帯電静電気によ
る電子機器障害が後を絶たない。[0004] However, in practice, there are many cases in which work is performed while forgetting to attach the wristband, and failure of electronic equipment due to electrified static electricity continues.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、静電
気を帯びた作業者から静電気がプリント基板に短時間で
放電されることを防止するためのプリント基板挿抜用イ
ジェクタを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide an ejector for inserting and removing a printed circuit board, which prevents static electricity from being discharged to the printed circuit board in a short time by a worker charged with the static electricity. .
【０００６】本発明の他の目的は、プリント基板上に実
装された電子回路が作業者の静電気によって破壊される
ことを防止した静電破壊防止構造を提供することにあ
る。Another object of the present invention is to provide an electrostatic discharge protection structure which prevents an electronic circuit mounted on a printed circuit board from being broken by an operator's static electricity.
【０００７】[0007]
【課題を解決するための手段】本発明は、プリント基板
挿抜用イジェクタに絶縁性を有する有機・無機物の粒子
または繊維の表面に帯電機能を有する金属を薄膜コーテ
ィングした物質がプラスチック素材に添加され混合され
たもの、或いは、金属酸化物がプラスチック素材に添加
された半導電性プラスチックのような半導電性材料を適
用することで、作業者の人体に帯電した静電気をプリン
ト基板挿抜用イジェクタを通してグラウンドに緩やかに
除電させる。そのことにより、電子機器、特に回路基板
への静電気放電による回路破壊もしくはノイズによる誤
動作を防ぐ。SUMMARY OF THE INVENTION The present invention provides an organic / inorganic particle having an insulating property in a printed circuit board insertion / ejection ejector.
Alternatively, apply a metal having a charging function to the surface of
Material is added to the plastic material and mixed
Or metal oxide added to plastic material
By applying the semi-conductive material, such as has been semiconductive plastic is slowly neutralization to ground static electricity charged to the body of the worker through the printed circuit board insertion-extraction ejector. This prevents circuit destruction due to electrostatic discharge to an electronic device, particularly a circuit board, or malfunction due to noise.
【０００８】本発明の場合、挿抜用イジェクタの導電特
性として、表面抵抗値を１０5〜１０10［Ω］としてい
る。In the case of the present invention, the surface resistance is set to 10 5 to 10 10 [Ω] as the conductive property of the insertion / ejection ejector.
【０００９】本発明のプリント基板の静電破壊防止構造
は、作業者の人体に帯電した静電気をグラウンドに緩や
かに除電させるため、半導電性のプリント基板挿抜用イ
ジェクタを有するプリント基板を使用し、プリント基板
挿抜用イジェクタが導電体を介して電子装置の金属フレ
ームに放電されるか、プリント基板のアース配線パター
ンやグラウンド電極を介して放電される。The structure for preventing electrostatic discharge of a printed circuit board of the present invention uses a printed circuit board having a semiconductive printed circuit board ejector for ejecting static electricity charged on a human body to a ground slowly. The ejector for ejecting the printed circuit board is discharged to the metal frame of the electronic device via the conductor, or discharged via the ground wiring pattern or the ground electrode of the printed circuit board.
【００１０】[0010]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して詳細に説明する。Next, embodiments of the present invention will be described in detail with reference to the drawings.
【００１１】図１及び図２は本発明の実施の形態を示
し、図１はプリント基板を電子装置に収納する前の状態
を示す平面図、図２は図１のプリント基板を電子装置に
収納完了した状態を示す斜視図である。1 and 2 show an embodiment of the present invention. FIG. 1 is a plan view showing a state before a printed circuit board is stored in an electronic device. FIG. 2 is a plan view showing the printed circuit board of FIG. It is a perspective view showing the state where it was completed.
【００１２】図１において、プリント基板２は、電子装
置１にガイドレール１０Ａ、１０Ｂに沿ってスライドし
て収納される。プリント基板２には、半導体などの回路
素子と導電体の配線パターンからなる電子回路３が実装
され、プリント基板の奥側（電子装置１に収容される奥
側という意味）の１辺には、電子装置１のコネクタ１１
に接続するコネクタ部４が形成されている。プリント基
板上の電子回路３はコネクタ部４、コネクタ１１を通し
て電子装置１に接続される。In FIG. 1, a printed circuit board 2 is housed in an electronic device 1 by sliding along guide rails 10A and 10B. An electronic circuit 3 composed of a circuit element such as a semiconductor and a wiring pattern of a conductor is mounted on the printed circuit board 2, and one side on the back side of the printed circuit board (meaning the back side accommodated in the electronic device 1) is: Connector 11 of electronic device 1
Is formed. The electronic circuit 3 on the printed board is connected to the electronic device 1 through the connector section 4 and the connector 11.
【００１３】プリント基板２の取り出し側には、半導電
性の１対のプリント基板挿抜用イジェクタ（以下、単に
「挿抜用イジェクタ」と称す）５が固定されている。A pair of semi-conductive ejectors 5 for inserting and removing a printed circuit board (hereinafter simply referred to as "ejectors for inserting and removing") 5 are fixed to the take-out side of the printed circuit board 2.
【００１４】挿抜用イジェクタ５は、てこの原理を利用
してプリント基板を収納する電子装置から挿抜できる構
造である。すなわち、リブ５ａをつまみ、プリント基板
２に固定された金属の回転軸５ａを中心にして回転させ
ることで、挿抜用イジェクタ５の一部を電子装置１のフ
レームに引っかけ、てこの原理によってプリント基板２
の抜き差しを容易にする構造である。The insertion / extraction ejector 5 has a structure that can be inserted / extracted from an electronic device that houses a printed circuit board by utilizing the principle of leverage. That is, by gripping the rib 5a and rotating it about the metal rotation shaft 5a fixed to the printed circuit board 2, a part of the ejector 5 for insertion and removal is hooked on the frame of the electronic device 1, and the lever of the printed circuit board is used. 2
It is a structure that makes it easy to insert and remove the device.
【００１５】図１に示すように、挿抜用イジェクタ５の
つまみ５ａが開いている状態では、プリント基板２のコ
ネクタ部４と電子装置のコネクタ１１とが接続されてい
ない。つまみ５ａを図１の矢印Ａ方向に回転させること
によって、挿抜用イジェクタ５の図１のＢ部を電子装置
１のフレームに引っかけ、回転軸５ｂを中心とするてこ
の原理によってプリント基板２をコネクタ１１側にスラ
イドさせ、図２に示すようにコネクタ部４とコネクタ１
１との接続を完了する。As shown in FIG. 1, when the knob 5a of the ejector 5 is open, the connector 4 of the printed circuit board 2 and the connector 11 of the electronic device are not connected. By rotating the knob 5a in the direction of arrow A in FIG. 1, the portion B of FIG. 1 of the ejector 5 for insertion and removal is hooked on the frame of the electronic device 1, and the printed circuit board 2 is connected to the connector by the principle of leverage about the rotation shaft 5b. 11 side, and as shown in FIG.
1 is completed.
【００１６】逆に、図２の状態からプリント基板２を抜
くときには、挿抜用イジェクタ５のリブ５ａを図２の矢
印Ｂ方向に回転させれば、図１の状態となる。Conversely, when removing the printed circuit board 2 from the state shown in FIG. 2, if the rib 5a of the ejector 5 for insertion / removal is rotated in the direction of arrow B in FIG. 2, the state shown in FIG. 1 is obtained.
【００１７】図2において、挿抜用イジェクタ５の金属
の回転軸５ｂは、プリント基板２のアース配線パターン
２０に接続され、そのアース配線パターンは、コネクタ
部４を介してコネクタ１１に接続され、電子装置１のグ
ランド配線に接続される。In FIG. 2, a metal rotating shaft 5b of the insertion / ejection ejector 5 is connected to a ground wiring pattern 20 of the printed circuit board 2, and the ground wiring pattern is connected to the connector 11 via the connector section 4, and It is connected to the ground wiring of the device 1.
【００１８】したがって、図2に示すように、プリント
基板2が電子装置1に装着されている状態で、作業者（人
体）がプリント基板２を抜くために挿抜用イジェクタ５
の表面に触れると、作業者に蓄積された静電気は半導電
性プラスチックの挿抜用イジェクタ５から金属の回転軸
５ｂに伝わり、プリント基板２のアース配線パターン２
０に流れ、そのアース配線パターン２０からコネクタ部
４を介してコネクタ１１に流れ、電子装置１のグランド
電極に放電される。Therefore, as shown in FIG. 2, when the printed circuit board 2 is mounted on the electronic device 1, an operator (human body) inserts and removes the ejector 5 for removing the printed circuit board 2.
When the surface of the printed circuit board 2 is touched, the static electricity accumulated in the worker is transmitted from the semi-conductive plastic ejector 5 to the metal rotating shaft 5b, and the ground wiring pattern 2
0, flows from the ground wiring pattern 20 to the connector 11 via the connector section 4, and is discharged to the ground electrode of the electronic device 1.
【００１９】挿抜用イジェクタ５は、プラスチック（表
面抵抗値：１０16［Ω］以上）に導電材料を添加したも
ので形成され、半導電性を有する。例えば、絶縁性を有
する有機・無機物の粒子または繊維の表面に帯電機能を
有する金属を薄膜コーティングした充填材を結晶性熱可
塑性プラスチックに添加して混ぜ合わせることで半導電
性プラスチックが得られる。The ejector 5 for insertion and removal is made of plastic (surface resistance: 10 16 [Ω] or more) to which a conductive material is added, and has semiconductivity. For example, a semiconductive plastic can be obtained by adding a filler obtained by coating a thin film of a metal having a charging function on the surface of organic or inorganic particles or fibers having an insulating property to a crystalline thermoplastic plastic and mixing the resulting mixture.
【００２０】あるいは、カーボン粒子またはカーボン繊
維を結晶性熱可塑性プラスチックに添加して混ぜ合わせ
ることで半導電性プラスチックが得られる。また、ウィ
スカ（Ｋ2Ｏ・ｎＴｉＯ2）などの金属酸化物の粒子また
は繊維を結晶性熱可塑性プラスチックに添加して混ぜ合
わせることで半導電性プラスチックが得られる。Alternatively, a semiconductive plastic can be obtained by adding carbon particles or carbon fibers to a crystalline thermoplastic and mixing them. A semiconductive plastic can be obtained by adding particles or fibers of a metal oxide such as whisker (K 2 O.nTiO 2 ) to a crystalline thermoplastic and mixing them.
【００２１】プラスチックに混ぜ合わせる導電材料とし
て、金属そのものよりも、絶縁性を有する有機・無機物
に金属コーティングした素材を使用したり、カーボンま
たは金属酸化物を使用することにより、挿抜用イジェク
タ５の表面抵抗値を後述するように１０5〜１０
10［Ω］にすることができ、急激な放電を防止できる。As the conductive material to be mixed with the plastic, a material coated with an organic or inorganic material having a more insulating property than the metal itself, or a carbon or metal oxide is used, so that the surface of the ejector 5 for insertion / extraction can be formed. The resistance value is 10 5 to 10 as described later.
10 [Ω] to prevent rapid discharge.
【００２２】挿抜用イジェクタ５の導電特性として、表
面抵抗値を１０5〜１０10［Ω］にすることにより、半
導電性プラスチックの挿抜用イジェクタ５に触れること
で、人体から電子機器部品への静電気伝達速度が緩和さ
れ、スパークによる電子機器の静電破壊を防止できる。
表面抵抗値が１０5［Ω］より小さいと、人体の静電気
の放電時間が短くなり、プリント基板の電子回路との間
でスパークが発生し易くなる。また、表面抵抗値が１０
10［Ω］より大きいと、放電時間が長くなり過ぎ、電荷
が挿抜用イジェクタ５の中に溜まるという問題が発生す
る。図2に示すように、プリント基板2を電子装置１から
抜くために挿抜用イジェクタ５の表面に作業者（人体）
が触れると、作業者に蓄積された静電気が半導電性プラ
スチック内に分散している導電材料に伝達される。この
場合、挿抜用イジェクタ５の導電材料間を伝わる静電気
の伝達速度は、導電材料間を埋めている絶縁性プラスチ
ックにより制御されるため、プリント基板２へ静電気が
スパークすることなく電子装置１のグランドへ随時放電
される。これに伴い帯電静電気の放電電圧は下がるた
め、プリント基板２に伝わる静電気のショックを防止で
き、プリント基板２に実装された電子回路３の破壊を防
ぐとともに電磁波ノイズも緩和される。By setting the surface resistance value to 10 5 to 10 10 [Ω] as the conductive property of the insertion / extraction ejector 5, by touching the semi-conductive plastic insertion / extraction ejector 5, a human body can be connected to an electronic device part. The speed of transmission of static electricity is reduced, and electrostatic breakdown of electronic equipment due to sparks can be prevented.
If the surface resistance value is smaller than 10 5 [Ω], the discharge time of the static electricity of the human body is shortened, and sparks are easily generated between the electronic circuit of the printed circuit board. Further, when the surface resistance value is 10
If it is larger than 10 [Ω], the discharge time becomes too long, and a problem arises that electric charges are accumulated in the ejector 5 for insertion and extraction. As shown in FIG. 2, a worker (human body) is placed on the surface of the ejector 5 for insertion / extraction to remove the printed circuit board 2 from the electronic device 1.
When touched, static electricity accumulated in the worker is transferred to the conductive material dispersed in the semiconductive plastic. In this case, the transmission speed of the static electricity transmitted between the conductive materials of the insertion / ejection ejector 5 is controlled by the insulating plastic filling the space between the conductive materials. Is discharged at any time. Accordingly, the discharge voltage of the charged static electricity is reduced, so that the shock of the static electricity transmitted to the printed circuit board 2 can be prevented, and the electronic circuit 3 mounted on the printed circuit board 2 is prevented from being destroyed and the electromagnetic wave noise is reduced.
【００２３】本発明は以上説明した実施の形態に限定さ
れるものではない。たとえば、挿抜用イジェクタ５は電
子回路３に接続するアース配線パターン２０に接続され
てコネクタ１１に接続されていたが、電子回路３に接続
されない独立した配線を介してグラウンドに接続されて
いても良い。The present invention is not limited to the embodiment described above. For example, although the ejector 5 for insertion / removal is connected to the ground wiring pattern 20 connected to the electronic circuit 3 and connected to the connector 11, it may be connected to the ground via independent wiring not connected to the electronic circuit 3. .
【００２４】あるいは、ガイドレール１０Ａ、１０Ｂが
金属でかつグランドレベルであれば、挿抜用イジェクタ
５は、そのガイドレールに接続され、ガイドレールを介
して放電されるように構成されていても良い。Alternatively, if the guide rails 10A and 10B are metal and at the ground level, the ejector 5 for insertion and removal may be connected to the guide rail and may be configured to discharge through the guide rail.
【００２５】[0025]
【発明の効果】以上説明したように、本発明によれば、
作業者の人体に帯電した静電気をグラウンドに緩やかに
除電させるため、プリント基板に伝わる静電気のショッ
クを防止でき、プリント基板に実装された電子回路の破
壊を防ぐとともに電磁波ノイズも緩和できる。As described above, according to the present invention,
Since the static electricity charged on the human body of the worker is gradually discharged to the ground, the shock of the static electricity transmitted to the printed circuit board can be prevented, the electronic circuit mounted on the printed circuit board can be prevented from being destroyed, and the electromagnetic noise can be reduced.
【００２６】特に、挿抜用イジェクタの導電特性とし
て、表面抵抗値を１０5〜１０10［Ω］にすることによ
り、挿抜用イジェクタに触れることで、人体から電子機
器部品への静電気伝達速度が緩和され、スパークによる
電子機器の静電破壊を防止できる。In particular, by setting the surface resistance value to 10 5 to 10 10 [Ω] as a conductive property of the insertion / extraction ejector, the speed of static electricity transmission from the human body to the electronic device component is reduced by touching the insertion / extraction ejector. Thus, electrostatic breakdown of the electronic device due to the spark can be prevented.
【図１】本発明の実施の形態を示し、プリント基板を電
子装置に装着する直前の状態を示す斜視図である。FIG. 1 is a perspective view illustrating an embodiment of the present invention and illustrating a state immediately before a printed circuit board is mounted on an electronic device.
【図２】本発明の実施の形態を示し、プリント基板を電
子装置に装着終了した状態を示す斜視図である。FIG. 2 is a perspective view showing the embodiment of the present invention and showing a state in which the mounting of the printed circuit board on the electronic device has been completed.
【符号の説明】 １ 電子装置 ２ プリント基板 ３ 電子回路 ４ コネクタ部 ５ プリント基板挿抜用イジェクタ ５ａ ノブ ５ｂ 回転軸 １０Ａ、１０Ｂ ガイドレール １１ コネクタ ２０ アース配線パターン[Description of Signs] 1 Electronic device 2 Printed circuit board 3 Electronic circuit 4 Connector section 5 Ejector for insertion and removal of printed circuit board 5a Knob 5b Rotary shaft 10A, 10B Guide rail 11 Connector 20 Ground wiring pattern
Claims (9)
に設けられ、前記プリント基板を前記電子装置に挿抜す
るときに使用されるプリント基板挿抜用イジェクタにお
いて、前記プリント基板挿抜用イジェクタが絶縁性を有する有
機・無機物の粒子または繊維の表面に帯電機能を有する
金属を薄膜コーティングした物質がプラスチック素材に
添加され混合されたものである 半導電性プラスチックか
ら成るプリント基板挿抜用イジェクタ。1. An ejector for a printed circuit board, which is provided on a side where a printed circuit board is taken out of an electronic device and is used when inserting and removing the printed circuit board from and to the electronic device, wherein the ejector for inserting and removing a printed circuit board has an insulating property. Having
Has a charging function on the surface of inorganic or inorganic particles or fibers
Material with thin film coating of metal becomes plastic material
An ejector for inserting and removing a printed circuit board made of a semiconductive plastic which is added and mixed .
に設けられ、前記プリント基板を前記電子装置に挿抜す
るときに使用されるプリント基板挿抜用イジェクタにお
いて、前記プリント基板挿抜用イジェクタが金属酸化物がプラ
スチック素材に添加された 半導電性プラスチックから成
るプリント基板挿抜用イジェクタ。2. An ejector for inserting and removing a printed circuit board, which is provided on a side where a printed circuit board is taken out of an electronic device and is used when inserting and removing the printed circuit board from the electronic device, wherein the ejector for inserting and removing a printed circuit board is a metal oxide. But plastic
An ejector for inserting and removing printed circuit boards made of semiconductive plastic added to stick material .
がプラスチック素材に添加されたものであることを特徴
とする請求項1または2に記載されたプリント基板挿抜用
イジェクタ。Wherein the semi-conductive plastics, has been printed board insertion-extraction ejector according to claim 1 or 2, characterized in that the carbon is added to the plastic material.
して、表面抵抗値が１０5〜１０10［Ω］であることを
特徴とする請求項1から３のいずれかに記載されたプリ
ント基板挿抜用イジェクタ。Wherein said the conductive properties of semi-conductive plastic, surface resistivity 10 5 ~10 10 [Ω] is a printed circuit board insertion according to any one of claims 1 to 3, characterized in that the Ejector.
電破壊防止構造において、 前記プリント基板の前記電
子装置への取り出し側に設けられ、前記プリント基板を
前記電子装置に挿抜するときに使用され、プラスチック
に絶縁性を有する有機・無機物の粒子または繊維の表面
に帯電機能を有する金属を薄膜コーティングした物質を
混合した半導電性プラスチックから成るプリント基板挿
抜用イジェクタと、前記プリント基板挿抜用イジェクタ
を前記電子装置に接続するための接続手段とを有する静
電破壊防止構造。5. A structure for preventing electrostatic discharge damage of a printed circuit board mounted on an electronic device, wherein the printed circuit board is provided on a take-out side of the printed circuit board to the electronic device, and is used when the printed circuit board is inserted into and removed from the electronic device. , Plastic
Surface of organic or inorganic particles or fibers with insulating properties
A substance coated with a metal having a charging function
An electrostatic discharge prevention structure, comprising: a printed circuit board insertion / ejection ejector made of mixed semiconductive plastic; and connection means for connecting the printed circuit board insertion / extraction ejector to the electronic device.
電破壊防止構造において、 前記プリント基板の前記電
子装置への取り出し側に設けられ、前記プリント基板を
前記電子装置に挿抜するときに使用され、プラスチック
に金属酸化物を混 合した半導電性プラスチックから成る
プリント基板挿抜用イジェクタと、前記プリント基板挿
抜用イジェクタを前記電子装置に接続するための接続手
段とを有する静電破壊防止構造。6. A structure for preventing electrostatic discharge damage of a printed circuit board mounted on an electronic device, wherein the printed circuit board is provided on a take-out side of the printed circuit board to the electronic device, and is used when the printed circuit board is inserted into and removed from the electronic device. , Plastic
Electrostatic breakdown preventing structure and a connection means for connecting the printed circuit board insertion-extraction ejector comprising a metal oxide from the semiconductive plastic combined mixed, the printed circuit board insertion-extraction ejector to said electronic device.
として、表面抵抗値が１０5〜１０10［Ω］であること
を特徴とする請求項５または６に記載された静電破壊防
止構造。7. The structure according to claim 5, wherein the semiconductive plastic has a surface resistance of 10 5 to 10 10 [Ω] as a semiconductive property.
用イジェクタを前記プリント基板に回転可能に固定する
金属の回転軸と、前記回転軸に接続され前記電子装置の
グランド配線に接続される導電体とを有する請求項５か
ら７のいずれかに記載された静電破壊防止構造。8. The connecting means includes: a rotating shaft of metal for rotatably fixing the ejector for inserting and removing the printed circuit board to the printed circuit board; and a conductor connected to the rotating shaft and connected to a ground wiring of the electronic device. 6. The method according to claim 5, wherein
7. The structure for preventing electrostatic destruction according to any one of claims 7 to 7 .
用イジェクタを前記電子装置を介して接地することを特
徴とする請求項５から７のいずれかに記載された静電破
壊防止構造。9. The electrostatic discharge protection structure according to claim 5 , wherein said connecting means grounds said printed board insertion / extraction ejector via said electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10374999A JP3301406B2 (en) | 1999-04-12 | 1999-04-12 | Ejector for insertion and removal of printed circuit board and structure to prevent electrostatic breakdown of printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10374999A JP3301406B2 (en) | 1999-04-12 | 1999-04-12 | Ejector for insertion and removal of printed circuit board and structure to prevent electrostatic breakdown of printed circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000299578A JP2000299578A (en) | 2000-10-24 |
| JP3301406B2 true JP3301406B2 (en) | 2002-07-15 |
Family
ID=14362238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10374999A Expired - Fee Related JP3301406B2 (en) | 1999-04-12 | 1999-04-12 | Ejector for insertion and removal of printed circuit board and structure to prevent electrostatic breakdown of printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3301406B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857247A (en) * | 2012-12-05 | 2014-06-11 | 深圳市共进电子股份有限公司 | Anti-electrostatic interference cabinet veneer |
-
1999
- 1999-04-12 JP JP10374999A patent/JP3301406B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857247A (en) * | 2012-12-05 | 2014-06-11 | 深圳市共进电子股份有限公司 | Anti-electrostatic interference cabinet veneer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000299578A (en) | 2000-10-24 |
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