JPH04261100A - Control device with shielding function - Google Patents
Control device with shielding functionInfo
- Publication number
- JPH04261100A JPH04261100A JP388691A JP388691A JPH04261100A JP H04261100 A JPH04261100 A JP H04261100A JP 388691 A JP388691 A JP 388691A JP 388691 A JP388691 A JP 388691A JP H04261100 A JPH04261100 A JP H04261100A
- Authority
- JP
- Japan
- Prior art keywords
- shielding material
- case
- control device
- shielding
- printed circuit
- 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
- 239000000463 material Substances 0.000 claims abstract description 36
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、外部より輻射される
ノイズから電源、ＣＰＵ及び入出力部を有する制御装置
を保護する遮蔽材の配置位置及び固定方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for arranging and fixing a shielding material for protecting a control device having a power supply, a CPU, and an input/output section from noise radiated from the outside.
【０００２】0002
【従来の技術】例えば、プログラマブルコントローラは
、電源、ＣＰＵ、入出力装置及び各種機能装置から構成
され、また、ユニットやプリント基板単位で隣接して構
成され、更に、外部の高圧線や動力線及び外部機器と近
接して配置される場合が多いため、それらから輻射され
るノイズにより、いずれかが誤動作する恐れがある。
これを防止する方法として、従来からプログラマブルコ
ントローラのケースに遮蔽材が用いられてきた。以下に
その例を説明する。図４（ａ）、（ｂ）、図５（ａ）、
（ｂ）が従来の遮蔽材を用いた構成例である。[Prior Art] For example, a programmable controller is composed of a power supply, a CPU, an input/output device, and various functional devices, and is also composed of adjacent units or printed circuit boards, and further includes external high-voltage lines, power lines, etc. Since they are often placed in close proximity to external devices, noise radiated from them may cause one of them to malfunction. As a method to prevent this, shielding materials have traditionally been used in the case of programmable controllers. An example will be explained below. Figures 4(a), (b), Figure 5(a),
(b) is an example of a configuration using a conventional shielding material.
【０００３】図４は、ケース１の側面内側に遮蔽材３を
両面テープで貼ったものである。該遮蔽材３は薄い銅板
をノーメックスという絶縁材で覆ったものである。これ
により、主に隣接するユニットからの輻射ノイズを遮蔽
材３が遮蔽してケース１内のプリント基板２を輻射ノイ
ズから保護することができる。[0003] FIG. 4 shows a case 1 with a shielding material 3 pasted on the inner side surface with double-sided tape. The shielding material 3 is a thin copper plate covered with an insulating material called Nomex. Thereby, the shielding material 3 mainly shields the radiation noise from the adjacent units, and the printed circuit board 2 inside the case 1 can be protected from the radiation noise.
【０００４】図５は、ケース１の内側全面に遮蔽材３で
あるアルミニウムを薄く蒸着させたものである。プリン
ト基板２上の部品やリードと遮蔽材３との間に所定の絶
縁距離をとって絶縁板１２を貼付している。以上の構成
によって、ケース１の全方向に飛来する輻射ノイズを遮
蔽してプリント基板２を保護し、更にプリント基板が自
ら輻射するノイズが外部機器へ悪影響を与えるのを防止
することができる。FIG. 5 shows a case 1 in which a thin layer of aluminum, which is a shielding material 3, is deposited on the entire inside surface. An insulating plate 12 is attached between components and leads on the printed circuit board 2 and the shielding material 3 with a predetermined insulating distance. With the above configuration, it is possible to protect the printed circuit board 2 by shielding the radiated noise coming in all directions of the case 1, and further to prevent the noise radiated by the printed circuit board from adversely affecting external equipment.
【０００５】[0005]
【発明が解決しようとする課題】従来の制御装置は、い
ずれも遮蔽材がケースの内側に配置されていることから
外部から装着状態の確認が不可能であり、更に遮蔽材を
機械的に固定するのに数ヶ所のねじ止め或いは両面テー
プによる貼付けを必要とするため、工作性やメンテナン
ス性に問題があった。[Problems to be Solved by the Invention] In all conventional control devices, since the shielding material is placed inside the case, it is impossible to confirm the installation state from the outside, and furthermore, the shielding material is mechanically fixed. This requires screwing in several places or attaching with double-sided tape, which poses problems in workability and maintainability.
【０００６】また、遮蔽材をケースの内側に配置した場
合に、ケース内において絶縁板を貼付する等して一定の
絶縁距離を確保しなければならないため、装置の小型化
を阻害するという問題点もあった。Another problem is that when the shielding material is placed inside the case, a certain insulation distance must be secured by pasting an insulating plate inside the case, which hinders miniaturization of the device. There was also.
【０００７】この発明は上記のような問題点を解決する
ためになされたもので、遮蔽材をグランドラインに接続
させて効率のよい輻射ノイズの遮蔽を確保すると共に、
制御装置に対する遮蔽材の取付けに関し、その工作性や
メンテナンス性を向上させ、更に装置の小型化を促進す
ることができる遮蔽機能付制御装置を得ることを目的と
する。The present invention was made to solve the above-mentioned problems, and it connects the shielding material to the ground line to ensure efficient shielding of radiated noise.
It is an object of the present invention to provide a control device with a shielding function that can improve the workability and maintainability of the attachment of a shielding material to the control device, and further promote miniaturization of the device.
【０００８】[0008]
【課題を解決するための手段】この発明は、電源、ＣＰ
Ｕ及び入出力部を有する制御装置のケースの外側或いは
ケース壁内部に遮蔽材を配置する。また、上記遮蔽材の
取り付けは電気的結合を含んだ機械的な固定によりなさ
れる。[Means for Solving the Problems] This invention provides a power source, a CP
A shielding material is disposed outside the case of the control device having the U and the input/output section or inside the case wall. Further, the above-mentioned shielding material is attached by mechanical fixing including electrical connection.
【０００９】[0009]
【作用】この発明の遮蔽機能付制御装置は、その遮蔽材
をケースの外側或いはケース壁内部にグランドラインと
電気的に結合された状態で機械的な固定により配置され
ているので、上記遮蔽材によりケースの全方向に飛来す
る輻射ノイズを遮蔽してプリント基板を保護し、更に、
プリント基板自ら輻射するノイズが外部機器へ悪影響を
与えるのを防止する。[Operation] In the control device with a shielding function of the present invention, the shielding material is mechanically fixed on the outside of the case or inside the case wall in a state electrically connected to the ground line. This protects the printed circuit board by shielding the radiant noise coming from all directions of the case, and furthermore,
To prevent noise radiated by the printed circuit board from adversely affecting external equipment.
【００１０】0010
【実施例】この発明の一実施例を図について説明する。
図１は、遮蔽材３をプログラマブルコントローラユニッ
トにおけるケース１の外側に配置した場合の実施例であ
る。図２は、遮蔽材３をプログラマブルコントローラユ
ニットのケース１に埋め込んだ場合、換言すると、ケー
ス壁内部に配置した場合の実施例である。いずれも遮蔽
材３がねじ６と金属製ねじ付六角サポート４で固定され
ることにより電気的に結合されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment in which a shielding material 3 is placed outside a case 1 in a programmable controller unit. FIG. 2 shows an embodiment in which the shielding material 3 is embedded in the case 1 of the programmable controller unit, in other words, it is placed inside the case wall. Both are electrically coupled by fixing the shielding material 3 with screws 6 and metal threaded hexagonal supports 4.
【００１１】この金属製ねじ付六角サポート４はナット
５によりプリント基板２と固定される。金属製ねじ付六
角サポート４やナット５とプリント基板２と接触する部
分には、プリント基板２上にランド（図示せず）を設け
ておく。このランドは、プリント基板２上におけるグラ
ンドラインへパターンにより接続する。このグランドラ
インには、フレームグランド、シグナルグランド、アナ
ロググランド等が含まれるが、そのユニットにとって最
も遮蔽効果のあるものを選択する。This metal threaded hexagonal support 4 is fixed to the printed circuit board 2 with a nut 5. A land (not shown) is provided on the printed circuit board 2 at a portion where the metal threaded hexagonal support 4 or nut 5 contacts the printed circuit board 2. This land is connected to the ground line on the printed circuit board 2 by a pattern. This ground line includes a frame ground, a signal ground, an analog ground, etc., but the one with the most shielding effect for the unit is selected.
【００１２】また、グランドラインを接地した方が遮蔽
効果が得られる場合は図３のように、プリント基板２上
のパターンによりプリント基板２に取付けた端子台８と
結合して、端子台８から配線により直接接地する。若し
くは、プリント基板２上のマザーボード接続用コネクタ
９へパターンにより結合し、マザーボード１０を介して
マザーボードフレーム１１を盤等の接地された面へねじ
止めして接地する。If the shielding effect can be obtained by grounding the ground line, as shown in FIG. Ground directly by wiring. Alternatively, the motherboard frame 11 is connected to the motherboard connection connector 9 on the printed circuit board 2 by a pattern, and the motherboard frame 11 is screwed to a grounded surface of a board or the like via the motherboard 10 to be grounded.
【００１３】このようにしてケース１の外側にある遮蔽
材３或いはケース１に埋め込んだ遮蔽材３をケース１の
内側のプリント基板２のグランドラインへ電気的に結合
することにより、最良な遮蔽が達成できる。By electrically coupling the shielding material 3 outside the case 1 or the shielding material 3 embedded in the case 1 to the ground line of the printed circuit board 2 inside the case 1 in this way, the best shielding can be achieved. It can be achieved.
【００１４】また、図１或いは図２において、遮蔽材３
のケース１に対する取付けは、ケース１の面に対角線上
に配置した２つのねじ６にて行う。一方のねじ６は前述
した電気的結合を兼ねた固定であり、他方のねじ６は、
ケース１にインサートナット７を埋め込んでおいて、遮
蔽材３を固定する。ユニットを組立てる際には、部品の
取付けが終ったプリント基板１に、金属製ねじ付六角サ
ポート４及びナット５を組付けてケース１に収める。図
１に示したケース１の外側に遮蔽材３を設けるタイプの
場合には、遮蔽材３をケース１に当てがった状態で、ね
じ６を２本締めつけて作業完了となる。ユニットを分解
する際には、上記ねじ６を２本はずしてケース１を開け
て、プリント基板２を取り出すことが可能となる。Furthermore, in FIG. 1 or 2, the shielding material 3
is attached to the case 1 using two screws 6 arranged diagonally on the surface of the case 1. One of the screws 6 serves as a fixation which also serves as the electrical connection mentioned above, and the other screw 6 is
An insert nut 7 is embedded in the case 1, and the shielding material 3 is fixed. When assembling the unit, a metal screwed hexagonal support 4 and a nut 5 are assembled to the printed circuit board 1 to which the parts have been attached, and then placed in the case 1. In the case of the type in which the shielding material 3 is provided on the outside of the case 1 shown in FIG. 1, the work is completed by tightening the two screws 6 with the shielding material 3 in contact with the case 1. When disassembling the unit, the two screws 6 are removed, the case 1 is opened, and the printed circuit board 2 can be taken out.
【００１５】[0015]
【発明の効果】以上のように、この発明によれば、電源
、ＣＰＵ及び入出力部を有する制御装置のケースの外側
或いはケース壁内部に遮蔽材を配置し、また、上記遮蔽
材の取り付けは電気的結合を含んだ機械的な固定により
なされているので、効率のよい輻射ノイズの遮蔽を確保
すると共に、制御装置に対する遮蔽材の取付けに関し、
その工作性やメンテナンス性を向上させ、更に装置の小
型化を促進することができる。As described above, according to the present invention, a shielding material is disposed outside the case of a control device having a power supply, a CPU, and an input/output section, or inside the case wall, and the installation of the shielding material is Since this is done by mechanical fixing including electrical coupling, it not only ensures efficient shielding of radiated noise, but also allows for easy installation of the shielding material to the control device.
The workability and maintainability of the device can be improved, and further downsizing of the device can be promoted.
【図１】図１は、この発明の一実施例による遮蔽機能付
制御装置の構成を示す説明図である。FIG. 1 is an explanatory diagram showing the configuration of a control device with a shielding function according to an embodiment of the present invention.
【図２】図２は、この発明の他の実施例による遮蔽機能
付制御装置の構成を示す説明図である。FIG. 2 is an explanatory diagram showing the configuration of a control device with a shielding function according to another embodiment of the present invention.
【図３】図３は、この発明の他の実施例による遮蔽機能
付制御装置の構成を示す説明図である。FIG. 3 is an explanatory diagram showing the configuration of a control device with a shielding function according to another embodiment of the present invention.
【図４】図４は、従来の遮蔽機能付制御装置の構成を示
す説明図である。FIG. 4 is an explanatory diagram showing the configuration of a conventional control device with a shielding function.
【図５】図５は、従来の遮蔽機能付制御装置の構成を示
す説明図である。FIG. 5 is an explanatory diagram showing the configuration of a conventional control device with a shielding function.
１ ケース
２ プリント基板
３ 遮蔽材
４ 金属製ねじ付六角サポート
５ ナット
６ ねじ７ インサートナット
８ 端子台９ マザ
ーボード接続用コネクタ １０ マザーボ
ード
１１ マザーボードフレーム1 case
2 Printed circuit board 3 Shielding material
4 Metal threaded hexagonal support 5 Nut
6 Screw 7 Insert nut
8 Terminal block 9 Motherboard connection connector 10 Motherboard 11 Motherboard frame
Claims (2)
御装置におけるケースの外側或いはケース壁内部に遮蔽
材を配置したことを特徴とする遮蔽機能付制御装置。1. A control device with a shielding function, characterized in that a shielding material is disposed outside a case or inside a case wall of a control device having a power supply, a CPU, and an input/output section.
含んだ機械的な固定によるものであることを特徴とする
請求項１記載の遮蔽機能付制御装置。2. The control device with a shielding function according to claim 1, wherein the shielding material is attached by mechanical fixing including electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3003886A JP2825353B2 (en) | 1991-01-17 | 1991-01-17 | Control device with shielding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3003886A JP2825353B2 (en) | 1991-01-17 | 1991-01-17 | Control device with shielding function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04261100A true JPH04261100A (en) | 1992-09-17 |
| JP2825353B2 JP2825353B2 (en) | 1998-11-18 |
Family
ID=11569667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3003886A Expired - Lifetime JP2825353B2 (en) | 1991-01-17 | 1991-01-17 | Control device with shielding function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2825353B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100521339B1 (en) * | 1998-10-17 | 2005-12-21 | 삼성전자주식회사 | Mounting structure of semiconductor device module for a computer system |
| KR100530869B1 (en) * | 1998-04-24 | 2006-02-28 | 삼성전자주식회사 | Computer system with the apparatus for mounting semiconductor device module on board |
| JP2013012471A (en) * | 2011-05-30 | 2013-01-17 | Canon Finetech Inc | Electrostatic shielding attachment unit and electronic apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54108610U (en) * | 1978-01-15 | 1979-07-31 | ||
| JPH0245695U (en) * | 1988-09-22 | 1990-03-29 | ||
| JPH02143861U (en) * | 1989-05-09 | 1990-12-06 |
-
1991
- 1991-01-17 JP JP3003886A patent/JP2825353B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54108610U (en) * | 1978-01-15 | 1979-07-31 | ||
| JPH0245695U (en) * | 1988-09-22 | 1990-03-29 | ||
| JPH02143861U (en) * | 1989-05-09 | 1990-12-06 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100530869B1 (en) * | 1998-04-24 | 2006-02-28 | 삼성전자주식회사 | Computer system with the apparatus for mounting semiconductor device module on board |
| KR100521339B1 (en) * | 1998-10-17 | 2005-12-21 | 삼성전자주식회사 | Mounting structure of semiconductor device module for a computer system |
| JP2013012471A (en) * | 2011-05-30 | 2013-01-17 | Canon Finetech Inc | Electrostatic shielding attachment unit and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2825353B2 (en) | 1998-11-18 |
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