JP3637580B2 - Shielded flat wire - Google Patents

Shielded flat wire Download PDF

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Publication number
JP3637580B2
JP3637580B2 JP19923699A JP19923699A JP3637580B2 JP 3637580 B2 JP3637580 B2 JP 3637580B2 JP 19923699 A JP19923699 A JP 19923699A JP 19923699 A JP19923699 A JP 19923699A JP 3637580 B2 JP3637580 B2 JP 3637580B2
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Japan
Prior art keywords
electric wire
flat electric
connecting portion
electrostatic shielding
insulating sheet
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JP19923699A
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Japanese (ja)
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JP2001023447A (en
Inventor
洋一 清水
隆司 森
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Yazaki Corp
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Yazaki Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、各種電子機器や床下屋内配線などに使用される静電遮蔽機能を備えたシールドフラット電線に関する。
【0002】
【従来の技術】
近年、各種電子機器や床下屋内配線にフラット電線・ケーブルが多用されている。図6は、フラット電線1の一般的な構造例を示しており、横並びに平行な複数本の導体2a,2b,2c・・・を表側と裏側からそれぞれ絶縁テープ3,4で覆い、導体のうちの任意の1本、たとえば真ん中の導体2bを接地線用としている。また、図7に示すシールドフラット電線5は、上記図6のフラット電線1の全長にわたって銅製の静電遮蔽板6で覆って静電遮蔽した構造のものである。この場合、接地線用の導体2bと遮蔽板6を導通させるために、あらかじめ表側の絶縁テープ3にこの長さ全長にわたって間欠的に導通孔3aを孔明けして設けている。この導通孔3aを通して接地線用の導体2bに静電遮蔽板6を点圧着して接続している。
【0003】
従来、このようなフラット電線1およびシールドフラット電線5を基本にして、たとえば実開平7−41874号公報に記載されたシールドフラット電線など多くの技術が提案されている。
図8において上記公報のシールドフラット電線7を概略的に示すに、平行な複数本の導体8のうち接地線用の導体8aを覆う部分の絶縁フィルム9を剥離し、剥離した部分の凹溝9aに導電性インキ10を充填し、その導電性インキ10を介して接地線用の導体8aとシールドテープ層11とを接続させている。それにより、接地線用の導体8aとシールドテープ層11との間の接地抵抗が小さく、また周辺部品から電気的影響を受けにくいノイズ防止に有効なシールドフラット電線7が得られるとしている。
【0004】
【発明が解決しようとする課題】
しかしながら、上記各図に示す従来例のフラット電線1やシールドフラット電線5,7にあっては、いずれも次の問題点がある。
まず、図6のフラット電線1は、銅板を用いた静電遮蔽が必要となった場合、それに対応して専用のコネクタで遮蔽板に接続するために、接続部の厚さが大きく肥大化する不都合がある。
また、図7のシールドフラット電線5にあっては、導通孔3aを通して接地線の導体2bに静電遮蔽板6が点圧着され、その点圧着が電線全長にわたって施されている。そのため、静電遮蔽が不要な個所であっても、静電遮蔽板6を取り除くことができず、不経済である。
【0005】
また、図8の公報記載のシールドフラット電線7の場合、接地線用の導体8aに対応して、その全長にわたって絶縁フィルム9を剥離して凹溝9aを設ける作業手間とか、その凹溝9aに導電性インク10を充填する作業手間がかかり、しかも構造が非常に複雑となる不具合がある。
【0006】
したがって、本発明の目的は、電線全長にわたって必要な個所だけに静電遮蔽を簡易に施せて経済的なシールドフラット電線を提供することにある。
【0007】
【課題を解決するための手段】
上記目的を達成するために、本発明による請求項1に記載のシールドフラット電線は、横並びに平行な複数本の導体を有し、これら全導体の表側と裏側から絶縁シートで覆ってさらにその表側の絶縁シートの上に静電遮蔽板を電線全長にわたって設けたものであって、接地線用とした前記導体の1本に対応する位置の前記静電遮蔽板にスリットで形成された適宜形状の接続部を設け、この接続部を内側に押し込んでめり込ませることにより前記表側の絶縁シートを突き抜けさせて前記接地線用の導体に接触可能に構成したことを特徴とする。
以上の構成から、シールドフラット電線の配索時、その静電遮蔽の必要な部分だけの静電遮蔽板において接続部を押し込んでめり込ませ、内側の絶縁シートを突き抜けさせてさらにその内側の接地線用の導体に接触させる。静電遮蔽の不要な部分の静電遮蔽板を切断して除去することで、その除去分の静電遮蔽板を節約できる。
【0008】
また、請求項2に記載のシールドフラット電線は、前記静電遮蔽板に前記接続部を電線全長にわたって断続的に設け、それら接続部の形状の向きを一つ置きに互い違いにして一直線上に配列してなっていることを特徴とするものである。
以上の構成から、断続的に設けた接続部の形状の向きを一つ置きに互い違いとすることで、それらをめり込ませて接地線用の導体に接触させた際、接触時の当接反力が相殺し合って静電遮蔽板の長さ方向へのずれが抑えられる。
【0009】
また、請求項3に記載のシールドフラット電線は、前記接続部の形状が三角形状であり、その先端の鋭角部の向きを互い違いにして一直線上に配列してなっていることを特徴とするものである。
以上の構成から、この場合接続部を三角形状とすると、その先端の鋭角部が鋭利で内側の絶縁シートを突き抜けやすくなる。
【0010】
また、請求項4に記載のシールドフラット電線は、前記接続部の形状がU字形状であり、そのU字形状の向きを正逆互い違いにして一直線上に配列してなっていることを特徴とするものである。
以上の構成から、この場合は断続的に設けたU字形状の接続部の形状の向きを一つ置きに互い違いとすることで、それらをめり込ませて接地線用の導体に接触させた際、接触時の当接反力が相殺し合って静電遮蔽板の長さ方向へのずれが抑えられる。
【0011】
また、請求項5に記載のシールドフラット電線は、前記接続部の形状がU字形状である場合に、前記表側の絶縁シートの対応する位置に補助スリットを切り込んで設けて、U字形状の接続部が表側の絶縁シートに突き抜け容易となるようにしたことを特徴とするものである。
以上の構成から、接続部がU字形状である場合は、押し込んでめり込ませる先端が鈍角であるから、上記三角形状の場合と比べて内側の絶縁シートに突き抜け難くなる。それを補うために絶縁シートに補助スリットを設けておけば、接続部の突き抜けが容易となる。
【0012】
【発明の実施の形態】
以下、本発明にかかるシールドフラット電線の実施の形態について、図面を参照して詳細に説明する。
【0013】
図1は、第1実施の形態のシールドフラット電線20を示す斜視図である。本シールドフラット電線20は、横並びに平行な複数本の導体21,22,23・・・を有し、そのうちの1本のたとえば導体22が接地線となっており、全導体の表側と裏側からテープ状の絶縁シート24,25で挟み込んで被覆してフラットに構成されている。普通、導体21,22,23・・・は用途ごとに識別用の印刷とか表示色が施されているため、接地線用となる導体22の位置は容易に確認できるようになっている。また、絶縁シート24,25は、シート厚さが0.15〜0.30mmのプラスチック樹脂製である。
【0014】
図2は、表側の絶縁シート24を上から覆って設けられるたとえば銅(Cu)製の静電遮蔽板26を示している。この静電遮蔽板26は、たとえば板厚0.05〜0.20mmの軟銅であり、その長さ方向の全長にわたって上記接地線用の導体22に対応する位置の直上に、向きを交互に違えてスリットによる複数の三角形状の接続部27,28が形成されている。すなわち、電線全長にわたってその一方向へ向いて接続部27が先端の鋭角部27aを揃え、この接続部27と一つ飛びに逆方向へ向かせて接続部28が先端の鋭角部28aを揃えて、たとえば50mm程度のピッチで向きを互い違いに配列されている。
【0015】
以上の構成から、本シールドフラット電線20をたとえば床下屋内配線などに用いて配索する場合、静電遮蔽が必要な個所では次の処理が行われる。静電遮蔽板26の向きが互い違いの接続部27,28を内側に押し込み、三角形状の先端の鋭角部27a,28aをめり込ませて下の絶縁シート24に突き抜けさせる。銅製であるから、鋭角部27a,28aによるプラスチック樹脂製の絶縁シート24への突き抜けが容易である。絶縁シート24を突き抜けると、接続部27,28の各鋭角部27a,28aが接地線用の導体22に接触する。これにて接地線用の導体12と静電遮蔽板26が接続状態となる。
その際、接続部27,28の鋭角部27a,28aは逆向きに絶縁シート24を突き抜けた状態となるから、突き抜け時の反力が相殺し合うことにより、電線長さ方向への静電遮蔽板26のずれが抑えられる。
【0016】
以上から明らかなように、シールドフラット電線20の配索現場において、静電遮蔽の必要な部分だけに静電遮蔽板26を施せばよく、静電遮蔽が不要な部分の静電遮蔽板26は板厚0.05〜0.20mmといった薄い軟銅製であるから、鋏などのカッター工具で簡便に切断して除去できる。その除去した部分の静電遮蔽板26だけ材料費を節約でき、経済的である。
なお、配索施工時のシールドフラット電線20は、静電遮蔽板26の上からさらに保護板や粘着テープで固定されるため、電線横方向へのずれも抑えることができる。
【0017】
次に、図3〜図5は、本発明にかかる第2実施の形態のシールドフラット電線30を示している。
本例のシールドフラット電線30は、上記第1実施の形態と基本的には同一構造であり、図4に示すように、静電遮蔽板26に設けられる接続部31,32の形状を本発明でいうU字形状に形成した点、この場合U字に似た矩形状に形成した点が異なっている。接続部31,32は、接地線用の導体22に対応する位置の直上に矩形状の向きを正逆互い違いにしたスリットで形成され、それぞれ適宜ピッチで断続的に配列されている。
【0018】
以上から、この第2実施の形態においても、シールドフラット電線30の配索施工時、静電遮蔽が必要な個所において上記第1実施の形態のシールドフラット電線20の場合と同様に処理され、同様な作用が得られる。
【0019】
ただし、接続部31,32がU字形状や矩形状の場合、めり込み先端部が鈍角であるから、絶縁シート24への突き抜けが上記第1実施の形態の三角形状の鋭角部27a,28aよりも若干難しくなる。それを補うため、図5に示すように、表側の絶縁シート24の対応する位置にたとえば平行2本線からなる補助スリット24aを形成しておくことができる。
【0020】
【発明の効果】
以上説明したように、本発明による請求項1に記載のシールドフラット電線は、配索施工時に静電遮蔽の必要な部分だけ、静電遮蔽板の接続部を押し込んでめり込ませ、絶縁シートを突き抜けさせてさらにその内側の接地線用の導体に接触させる。静電遮蔽の不要な部分の静電遮蔽板は切断して除去することで、その除去分の静電遮蔽板を節約できる。
【0021】
また、請求項2に記載のシールドフラット電線は、断続的に設けた接続部の形状の向きを一つ置きに互い違いとすることで、それらをめり込ませて接地線用の導体に接触させた際、接触時の当接反力が相殺し合って静電遮蔽板の長さ方向へのずれを抑えるのに有効である。
【0022】
また、請求項3に記載のシールドフラット電線は、この場合接続部を三角形状とすると、その先端の鋭角部が鋭利で内側の絶縁シートに突き抜けやすくなる利点がある。
【0023】
また、請求項4に記載のシールドフラット電線は、この場合は断続的に設けたU字形状の接続部の形状の向きを一つ置きに互い違いとすることで、それらをめり込ませて接地線用の導体に接触させた際、接触時の当接反力が相殺し合って静電遮蔽板の長さ方向へのずれを抑えるのに有効である。
【0024】
また、請求項5に記載のシールドフラット電線は、接続部がU字形状である場合は押し込んでめり込ませる先端が鈍角であるから、上記三角形状の場合よりも絶縁シートに突き抜け難くなるが、それを補うために絶縁シートに補助スリットを形成することで、接続部の突き抜けが容易となる。
【図面の簡単な説明】
【図1】本発明にかかる第1実施の形態のシールドフラット電線を示す斜視図である。
【図2】この第1実施の形態で用いられる銅板製の静電遮蔽板を示す斜視図である。
【図3】本発明にかかる第2実施の形態のシールドフラット電線を示す斜視図である。
【図4】この第2実施の形態で用いられる銅板製の静電遮蔽板を示す斜視図である。
【図5】同じく第2実施の形態において、絶縁シートに補助スリットを設けた場合を示す示す斜視図である。
【図6】従来例のフラット電線を示す斜視図である。
【図7】従来例のシールドフラット電線を示す斜視図である。
【図8】従来例として公報記載のシールドフラット電線を示す断面図である。
【符号の説明】
20,30 シールドフラット電線
21,23 導体
22 接地線用の導体
24,25 絶縁シート
24a 補助スリット
26 静電遮蔽板
27,28 接続部
27a,28a 鋭角部
31,32 接続部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shielded flat electric wire having an electrostatic shielding function used for various electronic devices, underfloor indoor wiring, and the like.
[0002]
[Prior art]
In recent years, flat electric wires and cables have been frequently used for various electronic devices and indoor wiring under the floor. FIG. 6 shows an example of a general structure of the flat electric wire 1, in which a plurality of conductors 2a, 2b, 2c,... That are parallel to each other are covered with insulating tapes 3 and 4 from the front side and the back side, respectively. Any one of them, for example, the middle conductor 2b is used for the ground line. Moreover, the shield flat electric wire 5 shown in FIG. 7 is a thing of the structure covered with the electrostatic shielding board 6 made from copper over the full length of the flat electric wire 1 of the said FIG. In this case, in order to electrically connect the conductor 2b for the grounding wire and the shielding plate 6, a conductive hole 3a is intermittently provided in advance on the insulating tape 3 on the front side over the entire length. The electrostatic shielding plate 6 is connected to the conductor 2b for the grounding wire through the conduction hole 3a by spot compression.
[0003]
Conventionally, on the basis of such a flat electric wire 1 and a shield flat electric wire 5, many techniques such as a shield flat electric wire described in Japanese Utility Model Laid-Open No. 7-41874 have been proposed.
8 schematically shows the shield flat electric wire 7 of the above publication, the insulating film 9 covering the ground wire conductor 8a among the plurality of parallel conductors 8 is peeled, and the groove 9a of the peeled portion is removed. The conductive ink 10 is filled in, and the ground wire conductor 8 a and the shield tape layer 11 are connected via the conductive ink 10. As a result, the shielded flat electric wire 7 effective for noise prevention is obtained in which the grounding resistance between the conductor 8a for the grounding wire and the shield tape layer 11 is small, and it is less susceptible to electrical influence from peripheral components.
[0004]
[Problems to be solved by the invention]
However, the conventional flat electric wires 1 and shielded flat electric wires 5 and 7 shown in the respective drawings have the following problems.
First, when the flat electric wire 1 of FIG. 6 requires electrostatic shielding using a copper plate, the thickness of the connecting portion is enlarged and enlarged in order to connect to the shielding plate with a dedicated connector correspondingly. There is an inconvenience.
Moreover, in the shield flat electric wire 5 of FIG. 7, the electrostatic shielding board 6 is point-pressure bonded to the conductor 2b of the ground wire through the conduction hole 3a, and the point pressure bonding is applied over the entire length of the electric wire. For this reason, the electrostatic shielding plate 6 cannot be removed even at places where electrostatic shielding is not required, which is uneconomical.
[0005]
Further, in the case of the shielded flat electric wire 7 described in the publication of FIG. 8, corresponding to the conductor 8a for the grounding wire, the work for providing the concave groove 9a by peeling the insulating film 9 over the entire length thereof, or the concave groove 9a There is a problem that the work of filling the conductive ink 10 is troublesome and the structure becomes very complicated.
[0006]
Accordingly, an object of the present invention is to provide an economical shield flat electric wire by simply applying electrostatic shielding to only necessary portions over the entire length of the electric wire.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the shield flat electric wire according to claim 1 according to the present invention has a plurality of conductors parallel to each other in parallel and covered with an insulating sheet from the front side and the back side of all the conductors, and further on the front side. An electrostatic shielding plate is provided over the entire length of the electric wire on the insulating sheet, and has an appropriate shape formed by a slit in the electrostatic shielding plate at a position corresponding to one of the conductors used for a grounding wire. A connecting portion is provided, and the connecting portion is pushed inward so as to penetrate the front insulating sheet so as to be able to contact the conductor for the ground wire.
From the above configuration, when the shielded flat wire is routed, the connecting portion is pushed in and inserted into the electrostatic shielding plate of only the necessary portion of the electrostatic shielding, the inner insulating sheet is penetrated, and the inner side is further inserted. Make contact with the conductor for grounding wire. By cutting and removing the portion of the electrostatic shielding plate that does not require electrostatic shielding, the portion of the electrostatic shielding plate that has been removed can be saved.
[0008]
Moreover, the shield flat electric wire according to claim 2 is arranged in a straight line in which the connection portions are intermittently provided on the electrostatic shielding plate over the entire length of the electric wire, and the directions of the shapes of the connection portions are alternately staggered. It is characterized by that.
From the above configuration, when the direction of the shape of the intermittently provided connecting portions is alternated every other, when they are indented and brought into contact with the conductor for the grounding wire, contact at the time of contact The reaction forces cancel each other, and the displacement of the electrostatic shielding plate in the length direction is suppressed.
[0009]
Moreover, the shield flat electric wire according to claim 3 is characterized in that the shape of the connecting portion is triangular and the direction of the acute angle portion at the tip thereof is staggered and arranged in a straight line. It is.
In this case, when the connecting portion is triangular, the acute angle portion at the tip is sharp and the inner insulating sheet can be easily penetrated.
[0010]
The shield flat electric wire according to claim 4 is characterized in that the shape of the connecting portion is U-shaped, and the directions of the U-shape are alternately arranged in a straight line. To do.
From the above configuration, in this case, the orientation of the U-shaped connecting portions provided intermittently is alternated every other direction so that they are sunk in contact with the conductor for the grounding wire. At this time, the contact reaction force at the time of contact cancels each other, and displacement of the electrostatic shielding plate in the length direction is suppressed.
[0011]
Moreover, the shield flat electric wire according to claim 5 is provided with a U-shaped connection by cutting an auxiliary slit at a corresponding position of the insulating sheet on the front side when the shape of the connecting portion is U-shaped. The portion is made easy to penetrate the front side insulating sheet.
From the above configuration, when the connecting portion is U-shaped, the tip to be pushed in is obtuse, and therefore, it is difficult to penetrate into the inner insulating sheet as compared with the triangular shape. If an auxiliary slit is provided in the insulating sheet to compensate for this, it is easy to penetrate the connecting portion.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a shielded flat electric wire according to the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a perspective view showing a shield flat electric wire 20 according to the first embodiment. The shield flat electric wire 20 has a plurality of conductors 21, 22, 23,... Which are parallel to each other, and one of them, for example, the conductor 22 serves as a ground line, and from the front and back sides of all the conductors. It is configured to be flat by being sandwiched and covered with tape-like insulating sheets 24 and 25. In general, the conductors 21, 22, 23,... Are printed with identification printing or display colors for each application, so that the position of the conductor 22 for the grounding wire can be easily confirmed. The insulating sheets 24 and 25 are made of plastic resin having a sheet thickness of 0.15 to 0.30 mm.
[0014]
FIG. 2 shows an electrostatic shielding plate 26 made of, for example, copper (Cu) provided so as to cover the front-side insulating sheet 24 from above. The electrostatic shielding plate 26 is, for example, annealed copper having a thickness of 0.05 to 0.20 mm, and the direction is alternately changed directly above the position corresponding to the conductor 22 for the grounding wire over the entire length in the length direction. A plurality of triangular connection portions 27 and 28 are formed by slits. That is, the connecting portion 27 is aligned in one direction over the entire length of the electric wire, and the acute angle portion 27a is aligned with the connecting portion 27. For example, the directions are arranged alternately at a pitch of about 50 mm.
[0015]
From the above configuration, when the shield flat electric wire 20 is routed using, for example, an underfloor indoor wiring, the following processing is performed at a place where electrostatic shielding is necessary. The connecting portions 27 and 28 having different directions of the electrostatic shielding plate 26 are pushed inward, and the acute-angle portions 27a and 28a at the tips of the triangles are pushed into the insulating sheet 24 below. Since it is made of copper, it is easy to penetrate the insulating sheet 24 made of plastic resin by the acute angle portions 27a and 28a. When the insulating sheet 24 is penetrated, the acute angle portions 27a and 28a of the connection portions 27 and 28 come into contact with the conductor 22 for grounding wire. As a result, the conductor 12 for grounding wire and the electrostatic shielding plate 26 are connected.
At that time, the acute angle portions 27a and 28a of the connection portions 27 and 28 are in a state of penetrating the insulating sheet 24 in the opposite direction, so that the reaction force at the time of the penetration cancels each other, thereby electrostatic shielding in the electric wire length direction. The displacement of the plate 26 is suppressed.
[0016]
As is clear from the above, in the installation site of the shield flat electric wire 20, it is only necessary to apply the electrostatic shielding plate 26 only to the portion where electrostatic shielding is necessary. Since it is made of thin annealed copper with a plate thickness of 0.05 to 0.20 mm, it can be easily cut and removed with a cutter tool such as a scissors. Only the removed portion of the electrostatic shielding plate 26 can save material costs and is economical.
In addition, since the shield flat electric wire 20 at the time of wiring construction is further fixed with a protective plate or an adhesive tape from above the electrostatic shielding plate 26, it is possible to suppress a deviation in the electric wire lateral direction.
[0017]
Next, FIGS. 3-5 has shown the shield flat electric wire 30 of 2nd Embodiment concerning this invention.
The shield flat electric wire 30 of the present example has basically the same structure as that of the first embodiment, and as shown in FIG. 4, the shape of the connecting portions 31 and 32 provided on the electrostatic shielding plate 26 is the present invention. The difference is that it is formed in a U shape, and in this case, it is formed in a rectangular shape similar to the U shape. The connecting portions 31 and 32 are formed by slits having a rectangular shape that is alternately reversed forward and backward immediately above the position corresponding to the conductor 22 for the ground wire, and are arranged intermittently at appropriate pitches.
[0018]
From the above, also in the second embodiment, when the shield flat electric wire 30 is installed, it is processed in the same manner as in the case of the shield flat electric wire 20 of the first embodiment at a place where electrostatic shielding is necessary. The effect is obtained.
[0019]
However, when the connection portions 31 and 32 are U-shaped or rectangular, the indented tip portion has an obtuse angle, so that the penetration into the insulating sheet 24 is more than the triangular acute angle portions 27a and 28a of the first embodiment. Slightly difficult. In order to compensate for this, as shown in FIG. 5, auxiliary slits 24 a made up of, for example, parallel two lines can be formed at corresponding positions on the front insulating sheet 24.
[0020]
【The invention's effect】
As described above, the shielded flat electric wire according to claim 1 according to the present invention is formed by pressing the connecting portion of the electrostatic shielding plate into the necessary portion of the electrostatic shielding at the time of wiring construction, and insulating sheet. And is further brought into contact with the conductor for the grounding wire inside. By cutting away and removing the portions of the electrostatic shielding plate that do not require electrostatic shielding, the portion of the electrostatic shielding plate removed can be saved.
[0021]
Further, the shielded flat electric wire according to claim 2 is configured such that the direction of the shape of the connecting portions provided intermittently is alternated so that they are indented and brought into contact with the conductor for the grounding wire. In this case, the contact reaction force at the time of contact cancels each other, and it is effective to suppress the displacement of the electrostatic shielding plate in the length direction.
[0022]
Moreover, the shield flat electric wire according to claim 3 has an advantage that if the connecting portion has a triangular shape, the acute angle portion at the tip thereof is sharp and easily penetrates into the inner insulating sheet.
[0023]
Further, in this case, the shield flat electric wire according to claim 4 is grounded by interposing them alternately by alternately arranging the directions of the U-shaped connecting portions provided intermittently. When contacting with the conductor for wire, the contact reaction force at the time of contact cancels each other, and it is effective to suppress the displacement of the electrostatic shielding plate in the length direction.
[0024]
Moreover, since the front end to which the shield flat electric wire according to claim 5 is pushed in and indented has an obtuse angle when the connecting portion is U-shaped, it is more difficult to penetrate the insulating sheet than in the case of the triangular shape. In order to compensate for this, an auxiliary slit is formed in the insulating sheet, thereby facilitating penetration of the connecting portion.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a shield flat electric wire according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing an electrostatic shielding plate made of a copper plate used in the first embodiment.
FIG. 3 is a perspective view showing a shield flat electric wire according to a second embodiment of the present invention.
FIG. 4 is a perspective view showing an electrostatic shielding plate made of a copper plate used in the second embodiment.
FIG. 5 is a perspective view showing a case where an auxiliary slit is provided in an insulating sheet in the second embodiment.
FIG. 6 is a perspective view showing a conventional flat wire.
FIG. 7 is a perspective view showing a shield flat electric wire of a conventional example.
FIG. 8 is a cross-sectional view showing a shielded flat electric wire described in the publication as a conventional example.
[Explanation of symbols]
20, 30 Shield flat electric wires 21, 23 Conductor 22 Ground wire conductors 24, 25 Insulating sheet 24a Auxiliary slit 26 Electrostatic shielding plates 27, 28 Connection portions 27a, 28a Acute angle portions 31, 32 Connection portions

Claims (5)

横並びに平行な複数本の導体を有し、これら全導体の表側と裏側からテープ状の絶縁シートで覆い、さらにその表側の絶縁シートを覆って静電遮蔽板を電線全長にわたって設けたシールドフラット電線であって、
接地線用とした前記導体の1本に対応する位置の前記静電遮蔽板にスリットで形成された適宜形状の接続部を設け、この接続部を内側に押し込んでめり込ませることにより前記表側の絶縁シートを突き抜けさせて前記接地線用の導体に接触可能に構成したことを特徴とするシールドフラット電線。
A shielded flat electric wire having a plurality of conductors parallel to each other, covered with a tape-like insulating sheet from the front and back sides of all the conductors, and further covered with an insulating sheet on the front side to provide an electrostatic shielding plate over the entire length of the electric wire Because
By providing a connecting portion of an appropriate shape formed by a slit in the electrostatic shielding plate at a position corresponding to one of the conductors used for the grounding wire, the connecting portion is pushed inward to be inserted into the front side. A shielded flat electric wire configured to be able to contact the ground wire conductor by penetrating the insulating sheet.
前記静電遮蔽板に前記接続部を電線全長にわたって断続的に設け、それら接続部の形状の向きを一つ置きに互い違いにして一直線上に配列してなっていることを特徴とする請求項1に記載のシールドフラット電線。2. The connection portion is provided intermittently over the entire length of the electric wire on the electrostatic shielding plate, and the direction of the shape of the connection portions is alternated and arranged in a straight line. Shield flat electric wire as described in 1. 前記接続部の形状が三角形状であり、その先端の鋭角部の向きを互い違いにして一直線上に配列してなっていることを特徴とする請求項2に記載のシールドフラット電線。The shield flat electric wire according to claim 2, wherein the shape of the connecting portion is a triangular shape, and the sharp angle portions at the tips thereof are alternately arranged in a straight line. 前記接続部の形状がU字形状であり、そのU字形状の向きを正逆互い違いにして一直線上に配列してなっていることを特徴とする請求項2に記載のシールドフラット電線。The shield flat electric wire according to claim 2, wherein the shape of the connecting portion is U-shaped, and the U-shaped directions are arranged in a straight line with the directions of the U-shape being alternately reversed. 前記接続部の形状がU字形状である場合に、前記表側の絶縁シートの対応する位置に補助スリットを設けることにより、U字形状の接続部が表側の絶縁シートに突き抜け容易となるようにしたことを特徴とする請求項4に記載のシールドフラット電線。When the shape of the connecting portion is U-shaped, an auxiliary slit is provided at a corresponding position of the front-side insulating sheet so that the U-shaped connecting portion can be easily penetrated into the front-side insulating sheet. The shield flat electric wire according to claim 4.
JP19923699A 1999-07-13 1999-07-13 Shielded flat wire Expired - Fee Related JP3637580B2 (en)

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