JPH04199787A - Electromagnetic wave shielding structure for electric cable - Google Patents
Electromagnetic wave shielding structure for electric cableInfo
- Publication number
- JPH04199787A JPH04199787A JP33281190A JP33281190A JPH04199787A JP H04199787 A JPH04199787 A JP H04199787A JP 33281190 A JP33281190 A JP 33281190A JP 33281190 A JP33281190 A JP 33281190A JP H04199787 A JPH04199787 A JP H04199787A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic wave
- shielding structure
- wave shielding
- electric cable
- electromagnetic shielding
- 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
- 239000000696 magnetic material Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は電磁波シールド構造物に引き込まれる電力線
や信号線などの電気ケーブルの電磁波シールド構造に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic shielding structure for electric cables such as power lines and signal lines drawn into an electromagnetic shielding structure.
一般に、電磁波シールド構造物に電力線や信号線などの
電気ケーブルを引き込む場合、これらのケーブルにノイ
ズフィルターや絶縁トランスを取り付けるなどして電磁
波が電気ケーブルを介して室内側に浸入したり、あるい
は外に漏れないように配慮されている。Generally, when electrical cables such as power lines and signal lines are connected to an electromagnetic wave shielding structure, noise filters and insulation transformers are attached to these cables to prevent electromagnetic waves from entering the room through the cables or leaking outside. Care has been taken to prevent leakage.
しかし、ノイズフィルターや絶縁トランスの設置には、
多額の費用がかかり、しかも、取付作業も複雑で多くの
手間・暇を要する。However, when installing noise filters and isolation transformers,
It costs a lot of money, and the installation work is complicated and requires a lot of time and effort.
この発明はこのような前記従来の課題を解決するために
提案されたもので、きわめて簡単な構造によって電気ケ
ーブルを介して浸入若しくは漏れる電磁波を完全に遮蔽
することができる電気ケーブルの電磁波シールド構造を
提供することを目的とするものである。This invention was proposed in order to solve the above-mentioned conventional problems, and provides an electromagnetic wave shielding structure for electric cables that can completely shield electromagnetic waves that enter or leak through electric cables with an extremely simple structure. The purpose is to provide
前記課題を解決するためこの発明にかかる電気ケーブル
の電磁波シールド構造は、電気ケープルを電磁波シール
ド構造物に引き込まれる前の少なくとも長さ２０ｍの長
さにわたって磁性体よりなる電磁波シールド部材によっ
て被覆し、かつ、当該電磁波シールド部材と電磁波シー
ルド構造物の電磁波シールド部材とを電気的に接続して
なる。In order to solve the above problems, an electromagnetic wave shielding structure for an electric cable according to the present invention covers the electric cable with an electromagnetic wave shielding member made of a magnetic material over a length of at least 20 m before being drawn into the electromagnetic wave shielding structure, and , the electromagnetic shielding member and the electromagnetic shielding member of the electromagnetic shielding structure are electrically connected.
以下、この発明を図示する一実施例に基づいて説明する
と、第１図は電磁波シールド構造物における電力線や信
号線などの電気ケーブルの配線状態を示したものである
。The present invention will be described below based on an illustrated embodiment. FIG. 1 shows the wiring state of electric cables such as power lines and signal lines in an electromagnetic shielding structure.
第１図乃至第２図において、電磁波シールド構造物工の
外壁２、基礎スラブ３及び屋上スラブ４の室内側には、
電磁波を完全に遮蔽できるように導電性の良い金属板、
たとえば銅板若しくは鋼板などからなる電磁波シールド
板５が全面にわたって取り付けられている。In Figures 1 and 2, on the indoor side of the outer wall 2, foundation slab 3, and roof slab 4 of the electromagnetic shielding structure,
Metal plate with good conductivity to completely shield electromagnetic waves,
An electromagnetic shielding plate 5 made of, for example, a copper plate or a steel plate is attached over the entire surface.
電気ケーブル６は断路器７で中継され、この断路器７か
ら配電盤８に引き込まれ、ここからバスダクト９を通っ
て各階に配線されている。The electric cable 6 is relayed by a disconnector 7, is led from the disconnector 7 to a switchboard 8, and is routed from there through a bus duct 9 to each floor.
断路器７は電磁波シールド構造物１とは別に、同じ敷地
内の地盤面下に設置され、配電盤８は電磁波シールド構
造物１の地下に設置されている。The disconnect switch 7 is installed below the ground surface in the same site separately from the electromagnetic shielding structure 1, and the switchboard 8 is installed underground under the electromagnetic shielding structure 1.
電気ケーブル６は電磁波シールド構造物１に引き込まれ
る前の少なくとも２０ｍ以上の範囲にわたって電磁波シ
ールド部材１０によって被覆されている。The electric cable 6 is covered with an electromagnetic shielding member 10 over a range of at least 20 m before being drawn into the electromagnetic shielding structure 1.
電磁波シールド部材１０は磁性体である鋼管又はフェラ
イトを被覆しである塩ビ管などの、少なくとも厚さが３
ｍｍ以上の鋼管などより形成されている。The electromagnetic wave shielding member 10 is made of a magnetic steel pipe or a PVC pipe coated with ferrite, and has a thickness of at least 3.
It is made of steel pipe or the like with a diameter of mm or more.
また、電磁波シールド部材１０（以下単にシールド管１
０という）は電磁波シールド構造物１周辺の地盤中に略
水平に埋設され、その一端は電磁波シールド構造物１の
地下に通じている。また、シールド管工０は電磁波シー
ルド板５と溶接半田付は又はボルト接合（第３図）など
によって電気的に接続されている。In addition, an electromagnetic wave shielding member 10 (hereinafter simply a shielding tube 1
0) is buried approximately horizontally in the ground around the electromagnetic shielding structure 1, and one end thereof communicates with the underground of the electromagnetic shielding structure 1. Further, the shield pipework 0 is electrically connected to the electromagnetic shielding plate 5 by welding, soldering, bolting (FIG. 3), or the like.
このように、電気ケーブル６がシールド管１０によって
少なくとも２０ｍ以上にわたって被覆されていることに
より、電気ケーブル６を介して ／浸入乃至漏れる電磁
波を完全に遮蔽することができる。なお、シールド管１
０は必ずしも地盤中に設置する必要はなく、適当なスペ
ースがあれば地上に設置してもよい。In this way, by covering the electric cable 6 with the shield pipe 10 over a length of at least 20 m, electromagnetic waves that enter or leak through the electric cable 6 can be completely shielded. In addition, shield tube 1
0 does not necessarily need to be installed in the ground, but may be installed on the ground if there is an appropriate space.
図中、番号１）は従来のノイズフィルターであり、当該
電磁波シールド構造物１から別棟の電磁波シールド構造
物に電気ケーブル６を配線する場合に、電磁波の漏れを
防止するために設置されるものである。In the figure, number 1) is a conventional noise filter, which is installed to prevent leakage of electromagnetic waves when wiring the electric cable 6 from the electromagnetic shield structure 1 to a separate electromagnetic shield structure. be.
この発明は以上の構成からなるので以下の効果を有する
。Since the present invention has the above configuration, it has the following effects.
電気ケーブルを電磁波シールド構造物に引き込まれる前
の少なくとも長さ２０ｍ以上にわたって、磁性体よりな
る電磁波シールド部材によって被覆するというきわめて
簡単な構造によって電力線や信号線等の電気ケーブルを
介して浸入若しくは漏れる電磁波を完全に遮断すること
ができる。Electromagnetic waves that infiltrate or leak through electric cables such as power lines and signal lines due to a very simple structure in which the electric cable is covered with an electromagnetic shielding member made of a magnetic material over a length of at least 20 m or more before being drawn into an electromagnetic shielding structure. can be completely blocked.
第１図、第２図及び第３図はこの発明の一実施例を示し
たもので、第１図は電磁波シールド構造物における電気
ケーブルの配線状態を示す電磁波シールド構造物の縦断
面図、第２図及び第３図は電磁波シールド構造物を電気
ケーブルが貫通する部分を示す縦断面図である。
１・・・電磁波シールド構造物、２・・・外壁、３・・
・基礎スラブ、４・・・屋上スラブ、５・・・電磁波シ
ールド板、６・・・電気ケーブル、７・・・断路器、８
・・・配電盤、９・・・バスダクト、１０・・・電磁波
シールド部材（シールド管）、１）・・・ノイズフィル
ター。1, 2, and 3 show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of the electromagnetic shielding structure showing the wiring state of electric cables in the electromagnetic shielding structure. 2 and 3 are longitudinal sectional views showing a portion where an electric cable passes through the electromagnetic shielding structure. 1... Electromagnetic wave shielding structure, 2... Outer wall, 3...
・Foundation slab, 4... Rooftop slab, 5... Electromagnetic shielding plate, 6... Electric cable, 7... Disconnector, 8
...Switchboard, 9...Bus duct, 10...Electromagnetic shielding member (shield pipe), 1)...Noise filter.
Claims (1)
ルの電磁波シールド構造において、前記電気ケーブルを
、前記電磁波シールド構造物に引き込まれる前の少なく
とも長さ２０ｍ以上にわたって、磁性体よりなる電磁波
シールド部材によって被覆し、かつ、当該電磁波シール
ド部材と電磁波シールド構造物の電磁波シールド部材と
を電気的に接続してなることを特徴とする電気ケーブル
の電磁波シールド構造。(1) In an electromagnetic shielding structure for an electric cable drawn into an electromagnetic shielding structure, the electric cable is covered with an electromagnetic shielding member made of a magnetic material over a length of at least 20 m or more before being drawn into the electromagnetic shielding structure. An electromagnetic shielding structure for an electric cable, characterized in that the electromagnetic shielding member and the electromagnetic shielding member of the electromagnetic shielding structure are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332811A JP2662091B2 (en) | 1990-11-29 | 1990-11-29 | Electromagnetic wave shield structure of electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332811A JP2662091B2 (en) | 1990-11-29 | 1990-11-29 | Electromagnetic wave shield structure of electric cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04199787A true JPH04199787A (en) | 1992-07-20 |
| JP2662091B2 JP2662091B2 (en) | 1997-10-08 |
Family
ID=18259068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332811A Expired - Fee Related JP2662091B2 (en) | 1990-11-29 | 1990-11-29 | Electromagnetic wave shield structure of electric cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2662091B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003060379A (en) * | 2001-08-17 | 2003-02-28 | Kumagai Gumi Co Ltd | Through-part processing structure of electromagnetic shielding layer, through-part processing member and conductor wire |
| US7547987B2 (en) * | 2006-06-22 | 2009-06-16 | Hitachi, Ltd | EMI reduced power inverter |
| JP2012154106A (en) * | 2011-01-26 | 2012-08-16 | Toyota Home Kk | Ceiling structure and building |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188489U (en) * | 1984-05-25 | 1985-12-13 | 松下電工株式会社 | Communication duct |
| JPS6373996U (en) * | 1986-10-31 | 1988-05-17 | ||
| JPS641958A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Object section visualizer |
-
1990
- 1990-11-29 JP JP2332811A patent/JP2662091B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188489U (en) * | 1984-05-25 | 1985-12-13 | 松下電工株式会社 | Communication duct |
| JPS6373996U (en) * | 1986-10-31 | 1988-05-17 | ||
| JPS641958A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Object section visualizer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003060379A (en) * | 2001-08-17 | 2003-02-28 | Kumagai Gumi Co Ltd | Through-part processing structure of electromagnetic shielding layer, through-part processing member and conductor wire |
| US7547987B2 (en) * | 2006-06-22 | 2009-06-16 | Hitachi, Ltd | EMI reduced power inverter |
| JP2012154106A (en) * | 2011-01-26 | 2012-08-16 | Toyota Home Kk | Ceiling structure and building |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2662091B2 (en) | 1997-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |