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JP3558895B2
JP3558895B2 JP29567298A JP29567298A JP3558895B2 JP 3558895 B2 JP3558895 B2 JP 3558895B2 JP 29567298 A JP29567298 A JP 29567298A JP 29567298 A JP29567298 A JP 29567298A JP 3558895 B2 JP3558895 B2 JP 3558895B2
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JP2000125464A (en
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博 桜井
彰平 米村
一浩 横田
崇 横山
誠也 桑原
正治 佐藤
重雄 近井
光男 服部
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Nippon Telegraph and Telephone Corp
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Nippon Telegraph and Telephone Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、複数のコンピュータ端末装置を一つの信号線網(例えばLAN,Local Area Network) に接続するための接続器具として利用する。本発明は、コンピュータ端末装置と信号線との接続点に避雷放電素子を含む避雷器を接続するための装置に関する。特に、多数の装置を一つの通信網に接続することができる接続器具に関する。またその接続器具に雷サージに伴う電流を放電することができる接地を接続するための実装構造に関する。
【0002】
【従来の技術】
高速通信網のLANの一つの規格である100Base−Tあるいは10Base−5に例示されるように、一つの基幹ケーブルから数個の回線を分岐するLANの規格が採用されることになった。このような規格では、図11に示すように、信号を分岐するための装置としてHUB装置が導入されるが、このHUB装置の端末側には例えば5個の回線を取ることができ、これにそれぞれコンピュータ端末装置などを接続することができる。またこのHUB装置を動作させるために、商用電源を取り込むことが必要である。
【0003】
一方通信回線の分岐点に避雷放電素子を接続した避雷器を設置して、通信回線に混入するサージ電圧から装置を防護する技術が知られている。これは、図12に示すように、一対の通信回線および接地電位との間に3極放電管を接続して、通信回線に異常高電圧が混入したときに、通信回線の対間を短絡するとともにこれを接地電位に接続するものである。このような装置は古くから電話線の引込み点に設置されている。
【0004】
さらに、商用電源に混入する異常高電圧が装置に影響しないように、商用電源の電流通路と接地との間に3極放電管を接続して、異常高電圧に伴う電流を接地に放電させる回路は、通信装置の電源回路その他に広く用いられている。
【0005】
【発明が解決しようとする課題】
上述のLANでは、通信線が広いビル内や隣接する建造物などにまたがって配線されることがあり、回線の分岐点で通信回線側から高電圧サージが混入することがある。このような高電圧サージからHUB装置に接続されるコンピュータ装置その他を防護するために、HUB装置の端末側にサージ防護回路を設けることが必要になった。また、このような高電圧サージはLAN回線から到来するだけでなく、HUB装置を動作させるための商用電源からも到来する可能性もある。
【0006】
このために、従来から利用されている避雷器をこのHUB装置の出力側に設置することが考えられるが、例えば5個の避雷器をケーブルの途中に個別に接続することは、多数のケーブルを混乱させることになって装置まわりの整理が悪くなる。また、避雷器には確実な接地をとることが必要である。かりに接地電位が不確実であると、これが新たなサージ発生の原因となるばかりか、コンピュータなどを操作する人体に対しても危険が及ぶことにもなる。このためには、それぞれの避雷器に対して、太い接地ケーブルを接触不良などが発生しないように確実に配線しなければならない。
【0007】
本発明はこのような背景に行われたものであって、LAN回線の分岐点まわりのケーブルの整理を良くすることができる便利な保安器を提供することを目的とする。本発明は、避雷回路に確実な接地電位を接続することができ、操作する者の危険を少なくすることができる装置を提供することを目的とする。本発明は、商用電源から混入する高電圧サージを併せて防護することができる装置を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明は、一つの信号線網(例えばLAN)とコンピュータ端末装置を含む各種情報機器との接続に用いる避雷放電素子を実装した保安器を複数使用するときに、積み重ねた状態で接地導体を堅固に連結するとともに、一つの端子で確実な接地を行うことができる構造を特徴とする。
【0009】
すなわち、本発明の第一の特徴は、信号線用保安器の構造についてであって、信号入力端子と、信号出力端子と、この信号入力端子とこの信号出力端子との対応する電極をそれぞれ相互に接続する複数の導体と、この複数の導体と接地電位との間にそれぞれ接続された避雷放電素子とが基板に実装され、この基板が取付けられた底板と、この基板を覆うとともにこの底板に締付けられる蓋とを備えた信号線用保安器において、前記接地電位に接続された一枚の接地導体が前記底板の側部と前記蓋の側部とにまたがって設けられ、この接地導体には上下に2個のネジ孔が形成され、前記保安器が複数積み重ねて利用されるとき、下になる保安器の上のネジ孔に螺合するネジと、上になる保安器の下のネジ孔に螺合するネジと、この二つのネジを連結する連結金具とを備えたことを特徴とする。
【0010】
前記蓋の上部には一対のレールが形成され、前記底板の下部にはこのレールに嵌合するツメが形成され、前記連結金具に設けられた二つのネジの通し孔の間隔は上記接地導体に設けられた上下2個のネジ孔の間隔に等しいことが望ましい。
【0011】
信号入力端子に信号線網側の接続プラグを差込み、信号出力端子に装置側の接続プラグを差込むことにより信号線網と装置とが接続されるとともに、避雷放電素子が接地電位との間に接続される。これにより、信号入力端子に到来した信号は電極から導体を介して信号出力端子に送信され、信号線に落雷などによるサージ電圧が混入したときは避雷放電素子から接地電位に放電が行われる。
【0012】
コンピュータ端末装置やその関連機器を複数使用するときは、それぞれの保安器を複数積み重ね、下になる保安器の接地導体に形成された上側のネジ孔と上になる保安器の接地導体に形成された下側のネジ孔上に連結金具をまたがせて配置し、ネジ孔の位置に対応して形成された通し孔からネジを螺合させて固定する。これにより、下になる保安器の接地導体と上になる保安器の接地導体は電気的に接続され、接地を個別に行うことなく一つに集結して行うことができる。さらに、保安器の数が増加した場合も、保安器の筐体を順次積み重ね、接続金具を用いて同様の接地電極の接続を行うことにより、整理をよくするとともに接地電位の確実な接続を行うことができる。
【0013】
保安器を積み重ねるときは、下になる保安器の蓋に形成された一対のレールの端部に、上になる保安器の底板に形成されたツメの端部を嵌合させ、その端面が一致する方向に摺動させることにより容易に連結させることができる。積み重ねる数がさらに増加しても同様の操作を行うことにより順次連結することができる。
【0014】
本発明の第二の特徴は、電源線用保安器の構造についてであって、前記底板、前記蓋、前記接地導体、前記連結金具の形状が前記信号線用保安器と等しい形状であり、その内部に商用電源の保安回路が実装され、前記信号線用保安器を積み重ねて利用されることを特徴とする。前記接地導体とは別に接地配線用端子が形成されることが望ましい。この接地配線用端子を利用して、太い電線により接地配線が行われる。
【0015】
通信線ネットワークから信号を分岐するための装置としてHUB装置が用いられ、このHUB装置には動作させるための商用電源が取込まれる。この商用電源からの高電圧サージの混入を防止するために用いる電源線用保安器も、前記信号線用保安器と同様の構造に構成する。これにより、電源線用保安器の上部に一つもしくはそれ以上の通信線用保安器を積み重ねて使用することができる。また、信号線用保安器の上部に電源線用保安器を積み重ねて利用することもできる。
【0016】
この電源線用保安器には、接地導体とは別に、この接地導体に電気的に接続された接地線配線用端子を設ける。これにより、積み重ねられた通信線用保安器を含めて確実に接地を行うことができる。
【0017】
このように本発明によれば、複数の保安器が用いられても、積み重ねた状態でそれぞれの接地導体を順次接続することができ、積み重ねた個々の保安器に接地用ケーブルを接続することなく、一つの接地配線により接地電位を避雷回路に確実に接続することができる。さらに、ケーブルの数が削減されるので装置周辺の整理をよくすることができ安全性を向上させることができる。
【0018】
【発明の実施の形態】
【0019】
【実施例】
次に、本発明実施例を図面に基づいて説明する。図1は本発明実施例保安器に係わる通信線ネットワークの全体構成の一例を示す図である。ここには、通信線ネットワーク1のトランシーバにHUB装置3が接続され、このHUB装置3から携帯用コンピュータ端末装置4および卓上型コンピュータ端末装置5などに信号線用保安器10を介して、信号線が分岐された例が示されている。HUB装置3には商用電源が電源線用保安器20を介して供給される。
【0020】
図2は本発明実施例信号線用保安器の要部の構成を示す分解斜視図、図3は本発明実施例信号線用保安器の外観形状を示す斜視図である。
【0021】
本発明実施例信号線用保安器10は、信号入力端子11と、信号出力端子12と、この信号入力端子11と信号出力端子12との対応する電極をそれぞれ相互に接続する複数の導体と、この複数の導体と接地電位との間にそれぞれ接続された避雷放電素子とが基板14に実装され、この基板14が取付けられた底板15と、基板14を覆うとともに底板15に締付けられる蓋16とが備えられる。
【0022】
蓋16の上部には一対の溝状のレール16aが形成され、底板15の下部にはこのレール16aに嵌合するツメ15aが形成される。このツメ15aの一方の端部近傍には一対の係合溝15bが形成され、蓋16の上部に形成されたレール16aの一対の係合溝15bに対応する位置にはこの係合溝15bに嵌合する一対の突起部16bが形成される。
【0023】
さらに、接地電位に接続された一枚の接地導体6が底板15の側部と蓋16の側部とにまたがって設けられ、この接地導体6には上下に2個のネジ孔6aおよび6bが形成されるとともに、その中央部に通し孔6cが形成され、保安器が複数積み重ねて利用されるとき、下になる保安器の上のネジ孔6aに螺合するネジ7aと、上になる保安器の下のネジ孔6bに螺合するネジ7bと、この二つのネジ7aおよび7bを連結する連結金具8とが備えられる。
【0024】
連結金具8に設けられた二つの通し孔8aおよび8bの間隔は、接地導体6に設けられた上下2個のネジ孔6aおよび6bの間隔に等しく設定される。さらに、この連結金具8には通し孔8aと8bとの中央部に別の通し孔8cが形成され、その上端部および下端部には半円径の切欠き8dが形成される。接地導体6に連結金具8がネジ7aおよび7bにより固定された状態でその外側にプラスチック製またはゴム製のアースカバー9が被せられる。
【0025】
図4(a)は本発明実施例通信線用保安器に用いられるアースカバーの表面側の拡大斜視図、(b)はその裏面側の拡大斜視図である。
【0026】
アースカバー9の裏面には、連結金具8の通し孔8cおよび接地導体6の通し孔6cに圧入状態で挿入され上下方向の移動を抑制する凸部9aと、ネジ7aおよび7bの頭部を内包する二つの凹部9bとが形成される。
【0027】
図5は本発明実施例信号線用保安器のアースカバー取付け前の積み重ね状態を示す側面図、図6は本発明実施例信号線用保安器を積み重ねアースカバーを取付けた状態を示す斜視図である。
【0028】
ここで、通信線用保安器の積み重ね操作について説明する。まず、図6に示す下になる保安器の蓋16に形成されたレール16aのA側の端部に、上になる保安器の底板15に形成されたツメ15aのB側の端部を嵌合させ、上になる保安器を白抜き矢印方向に摺動させる。図7(a)はその摺動中の状態を示す図である。
【0029】
この摺動操作により底板15のB側の端面が蓋16のレール16aの上に形成された突起部16bに当接する。この当接状態からさらに矢印方向に蓋16を摺動させると、図7(b)に示すように、ツメ15aの当接部が突起部16bに乗り上げた後に、図7(c)に示すように蓋16の空間部16cに落ち込む。これにより、下になる保安器の蓋16と上になる保安器の底板15とは完全に係合した状態で連結される。
【0030】
次に、連結金具8により下になる接地導体6と上になる接地導体6との連結を行う。まず、図2に示す連結金具8の通し孔8aおよび8bを上になる接地導体6のネジ孔6bおよび下になる接地導体6のネジ孔6aに対応させ、図5に示すようにネジ7aおよび7bにより固定する。これにより、上になる接地導体6と下になる接地導体6とが連結金具8により接続される。
【0031】
この接地状態で上になる接地導体6に形成された通し孔6cの下側の円弧と連結金具8の上部に形成された半円状の切欠き8dとが対応して通し孔状態となり、下になる接地導体6に形成された通し孔6cの上側の円弧と連結金具8の下部に形成された半円状の切欠き8dとが対応して通し孔状態となる。
【0032】
この上下の通し孔にそれぞれアースカバー9の凸部9aを押し込むことにより圧入され、上部の凹部9bにネジ7aの頭部が収容されるとともに、下部の凹部9bにネジ7bの頭部が収容される。凸部9aは圧入状態にあるので二つのアースカバー9は図6に示すように連結金具8により接地導体6の連結部を覆った状態で固定される。
【0033】
重ねられた保安器を分離するときは、アースカバー9を手前に引き出すことにより凸部9aは通し孔から分離される。次いで、ネジ7aおよび7bを外して連結金具8を接地導体6から分離する。これにより上下の接地導体6の連結は解除される。この状態で上に重ねられた保安器を図6に示す白抜き矢印の方向とは逆の方向に引き出すと、図7(c)に示すツメ15aが空間部16cに落ち込んだ状態から図7(b)に示すように突起部16b上に乗り上げ、さらに引き出すことにより図7(a)に示すように突起部16bによるツメ15aの係合が解除され、上になる保安器の底板15と下になる保安器の蓋16とが分離される。
【0034】
図8は本発明実施例電源線用保安器の要部の構成を示す分解斜視図、図9は本発明実施例電源線用保安器の外観形状を示す斜視図である。
【0035】
本発明実施例電源線用保安器20は、商用電源を取込む差込みプラグ21がコードを介して接続され商用電源の保安回路および接地配線用端子22が実装された基板24と、この基板24が取付けられた底板25と、基板24を覆うとともに底板25に締付けられる蓋26とが備えられる。蓋26には接地配線用端子に対応する部分に接地線の接続を行うための開口部23が形成され、この開口部23には着脱自在の接地配線部蓋27が設けられる。
【0036】
蓋26の上部には、信号線用保安器10と同様に、一対の溝上のレール16aが形成され、底板15の下部にはこのレール16aに嵌合するツメ15aが形成される。このツメ15aの一方の端部近傍には一対の係合溝15bが形成され、蓋26の上部に形成されたレール16aの一対の係合溝15bに対応する位置にはこの係合溝15bに嵌合する一対の突起部16bが形成される。さらに、接地導体部が形成される。この接地導体部は前述した信号線用保安器10と同様に構成される。
【0037】
接地配線用端子22は二つの端子により構成され、一つの接地線が分岐して取付けられる。これは接地を確実に行うための構成であって、仮に一方の端子のネジにゆるみが生じるようなことがあっても他方の端子から確実に接地を行うことができる。
【0038】
図10は本発明実施例電源線用保安器の上に信号線用保安器を積み重ねた状態を示す斜視図である。
【0039】
このように、電源線用保安器20の上に信号線用保安器10を積み重ねることができる。この例では一つの信号線用保安器10が積み重ねられているが、さらにその上部に複数の信号線用保安器10を積み重ねることができる。また、信号線用保安器10の上に電源線用保安器20を積み重ねることも可能である。その積み重ねおよび接地導体6の連結金具8による連結操作は前述した信号線用保安器と同様に行うことができる。
【0040】
【発明の効果】
以上説明したように本発明によれば、複数の保安器を簡単な操作で積み重ね、それぞれの接地導体を順次接続することができ、積み重ねた個々の保安器に接地用ケーブルを接続することなく、一つの接地配線により接地電位を避雷回路に確実に接続することができる。さらに、ケーブルの数が削減されるので装置周辺の整理をよくすることができ、安全性を向上させることができる。
【図面の簡単な説明】
【図1】本発明実施例保安器に係わる通信線ネットワークの全体構成の一例を示す図。
【図2】本発明実施例信号線用保安器の要部の構成を示す分解斜視図。
【図3】本発明実施例信号線用保安器の外観形状を示す斜視図。
【図4】(a)は本発明実施例信号線用保安器に用いられるアースカバーの表面側の拡大斜視図、(b)はその裏面側の拡大斜視図。
【図5】本発明実施例信号線用保安器のアースカバー取付け前の積み重ね状態を示す側面図。
【図6】本発明実施例信号線用保安器を積み重ねアースカバーを取付けた状態を示す斜視図。
【図7】(a)は本発明実施例信号線用保安器を積み重ねるときのレールとツメの係合状態を示す拡大斜視図、(b)はツメが突起部に乗り上げた状態を示す拡大斜視図、(c)はツメが空間部に落ち込んだ状態を示す拡大斜視図。
【図8】本発明実施例電源線用保安器の要部の構成を示す分解斜視図。
【図9】本発明実施例電源線用保安器の外観形状を示す斜視図。
【図10】本発明実施例電源線用保安器の上に信号線用保安器を積み重ねた状態を示す斜視図。
【図11】従来例保安器に係わる通信線ネットワークの全体構成の一例を示す図。
【図12】従来例保安器の電気回路の一例を示す図。
【符号の説明】
1 通信線ネットワーク
3 HUB装置
4 携帯用コンピュータ端末装置
5 卓上型コンピュータ端末装置
6 接地導体
6a、6b ネジ孔
6c、8a、8b、8c 通し孔
7a、7b ネジ
8 連結金具
8d 切欠き
9 アースカバー
9a 凸部
9b 凹部
10 信号線用保安器
11 信号入力端子
12 信号出力端子
14、24 基板
15、25 底板
15a ツメ
15b 係合溝
16、26 蓋
16a レール
16b 突起部
16c 空間部
20 電源線用保安器
21 差込みプラグ
22 接地配線用端子
23 開口部
27 接地配線部蓋
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is used as a connection device for connecting a plurality of computer terminal devices to one signal line network (for example, LAN, Local Area Network). The present invention relates to a device for connecting a lightning arrester including a lightning discharge element to a connection point between a computer terminal device and a signal line. In particular, it relates to a connection device that can connect a number of devices to one communication network. Further, the present invention relates to a mounting structure for connecting a ground capable of discharging a current accompanying a lightning surge to the connection device.
[0002]
[Prior art]
As exemplified by 100Base-T or 10Base-5, which is one standard of a LAN of a high-speed communication network, a LAN standard that branches several lines from one trunk cable has been adopted. In such a standard, as shown in FIG. 11, a HUB device is introduced as a device for splitting a signal. For example, five lines can be provided on the terminal side of the HUB device. Each can be connected to a computer terminal device or the like. In order to operate the HUB device, it is necessary to take in a commercial power supply.
[0003]
On the other hand, a technique is known in which a lightning arrester having a lightning discharge element connected to a branch point of a communication line is installed to protect the device from surge voltage mixed into the communication line. In this method, as shown in FIG. 12, a three-electrode discharge tube is connected between a pair of communication lines and a ground potential to short-circuit the pair of communication lines when an abnormally high voltage is mixed in the communication lines. In addition, this is connected to the ground potential. Such devices have long been installed at telephone service points.
[0004]
Furthermore, a circuit for connecting a three-pole discharge tube between the current path of the commercial power supply and the ground to discharge the current accompanying the abnormally high voltage to the ground so that the abnormal high voltage mixed in the commercial power does not affect the device. Are widely used in power supply circuits of communication devices and the like.
[0005]
[Problems to be solved by the invention]
In the above-mentioned LAN, a communication line may be wired in a wide building or an adjacent building, and a high voltage surge may be mixed from a communication line side at a branch point of the line. In order to protect a computer device or the like connected to the HUB device from such a high voltage surge, it is necessary to provide a surge protection circuit on the terminal side of the HUB device. Further, such a high voltage surge may not only come from a LAN line but also come from a commercial power supply for operating the HUB device.
[0006]
For this purpose, it is conceivable to install a conventionally used lightning arrester on the output side of this HUB device. For example, connecting five lightning arresters individually in the middle of a cable confuses many cables. Eventually, the arrangement around the device becomes worse. Also, it is necessary to ensure that the lightning arrestor is grounded. If the ground potential is uncertain, this not only causes a new surge, but also poses a danger to a human body operating a computer or the like. For this purpose, a thick grounding cable must be securely wired to each lightning arrester so that a contact failure or the like does not occur.
[0007]
The present invention has been made in such a background, and an object of the present invention is to provide a convenient protector capable of improving the arrangement of cables around a branch point of a LAN line. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device capable of connecting a reliable ground potential to a lightning arrester circuit and reducing the danger of an operator. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device capable of simultaneously protecting against a high voltage surge mixed from a commercial power supply.
[0008]
[Means for Solving the Problems]
According to the present invention, when a plurality of protectors mounted with a lightning discharge element used for connection between one signal line network (for example, LAN) and various information devices including a computer terminal device are used, the ground conductors are firmly stacked in a stacked state. And a structure that enables reliable grounding with a single terminal.
[0009]
That is, the first feature of the present invention relates to the structure of the signal line protector, in which the signal input terminal, the signal output terminal, and the corresponding electrodes of the signal input terminal and the signal output terminal are mutually connected. A plurality of conductors connected to the plurality of conductors, and lightning arresters respectively connected between the plurality of conductors and the ground potential are mounted on a board, and a bottom plate on which the board is mounted, and a cover for the board and a cover for the bottom plate. In a signal line protector having a lid to be fastened, one ground conductor connected to the ground potential is provided over a side portion of the bottom plate and a side portion of the lid, and the ground conductor has When two or more screw holes are formed on the upper and lower sides, and when a plurality of the protectors are used in a stack, a screw screwed into a screw hole on a lower protector and a screw hole on a lower protector. Screw and these two screws Characterized by comprising a connecting fitting for binding.
[0010]
A pair of rails are formed on the upper part of the lid, and claws are formed on the lower part of the bottom plate so as to fit into the rails. It is desirable that the distance be equal to the distance between the two upper and lower screw holes.
[0011]
The signal line network and the device are connected by inserting the signal line connection plug into the signal input terminal and the device side connection plug into the signal output terminal. Connected. Thus, the signal arriving at the signal input terminal is transmitted from the electrode to the signal output terminal via the conductor, and when a surge voltage due to lightning strike or the like is mixed into the signal line, the lightning arrester discharges to the ground potential.
[0012]
When using a plurality of computer terminal devices and related equipment, a plurality of protective devices are stacked, and the upper protective screw hole formed in the ground conductor of the lower protective device and the ground conductor of the upper protective device are formed. The connecting fitting is placed over the lower screw hole, and screws are screwed into and fixed through through holes formed corresponding to the positions of the screw holes. As a result, the ground conductor of the lower protector and the ground conductor of the upper protector are electrically connected to each other, and can be collectively performed without individually performing grounding. Furthermore, even when the number of protectors increases, the housings of the protectors are sequentially stacked, and the same ground electrode is connected by using the connection fittings, thereby improving the organization and securely connecting the ground potential. be able to.
[0013]
When stacking the protectors, fit the ends of the claws formed on the bottom plate of the protector on the upper side with the ends of the pair of rails formed on the lid of the protector on the lower side. The connection can be easily made by sliding in the direction in which the connection is made. Even if the number of stacks further increases, the same operation can be performed to sequentially connect.
[0014]
The second feature of the present invention is about the structure of the power line protector, wherein the shape of the bottom plate, the lid, the ground conductor, the connection fitting is the same shape as the signal line protector, A security circuit of a commercial power supply is mounted inside, and the signal line protectors are stacked and used. It is preferable that a ground wiring terminal is formed separately from the ground conductor. Utilizing the ground wiring terminal, ground wiring is performed by a thick electric wire.
[0015]
A HUB device is used as a device for branching a signal from a communication line network, and a commercial power supply for operating the HUB device is taken into the HUB device. The power line protector used to prevent the high-voltage surge from the commercial power supply from being mixed in has the same structure as the signal line protector. Thus, one or more communication line protectors can be stacked and used on the power line protector. In addition, a power line protector can be stacked and used above the signal line protector.
[0016]
The power line protector is provided with a ground line wiring terminal electrically connected to the ground conductor separately from the ground conductor. As a result, the grounding including the stacked communication line protectors can be reliably performed.
[0017]
As described above, according to the present invention, even when a plurality of protectors are used, each ground conductor can be sequentially connected in a stacked state, without connecting a grounding cable to each stacked protector. The ground potential can be reliably connected to the lightning arrester circuit by one ground wiring. Further, since the number of cables is reduced, the arrangement around the device can be improved, and the safety can be improved.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
[0019]
【Example】
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an example of the entire configuration of a communication line network relating to a protector according to an embodiment of the present invention. Here, the HUB device 3 is connected to the transceiver of the communication line network 1, and from the HUB device 3 to the portable computer terminal device 4 and the desktop computer terminal device 5 via the signal line protector 10 via the signal line protector 10. Is shown. Commercial power is supplied to the HUB device 3 via a power line protector 20.
[0020]
FIG. 2 is an exploded perspective view showing a configuration of a main part of the signal line protector according to the embodiment of the present invention, and FIG. 3 is a perspective view showing an external shape of the signal line protector according to the embodiment of the present invention.
[0021]
The signal line protector 10 according to the embodiment of the present invention includes a signal input terminal 11, a signal output terminal 12, a plurality of conductors for mutually connecting the corresponding electrodes of the signal input terminal 11 and the signal output terminal 12, A lightning arrester connected between the plurality of conductors and the ground potential is mounted on a substrate 14, and a bottom plate 15 to which the substrate 14 is attached, a lid 16 covering the substrate 14 and fastened to the bottom plate 15 are provided. Is provided.
[0022]
A pair of groove-shaped rails 16a is formed on the upper part of the lid 16, and a claw 15a fitted to the rail 16a is formed on the lower part of the bottom plate 15. A pair of engagement grooves 15b is formed near one end of the claw 15a, and a pair of engagement grooves 15b is formed at a position corresponding to the pair of engagement grooves 15b of the rail 16a formed on the top of the lid 16. A pair of fitting projections 16b are formed.
[0023]
Further, one ground conductor 6 connected to the ground potential is provided over the side of the bottom plate 15 and the side of the lid 16, and this ground conductor 6 has two screw holes 6a and 6b at the top and bottom. When a plurality of protectors are stacked and used, a screw 7a screwed into a screw hole 6a above the protector below and a security above it. A screw 7b that is screwed into the screw hole 6b below the container, and a connection fitting 8 that connects the two screws 7a and 7b are provided.
[0024]
The distance between the two through holes 8a and 8b provided in the connection fitting 8 is set equal to the distance between the upper and lower two screw holes 6a and 6b provided in the ground conductor 6. Further, another through-hole 8c is formed in the center of the through-holes 8a and 8b, and a notch 8d having a semicircular diameter is formed at the upper end and the lower end thereof. A grounding cover 9 made of plastic or rubber is put on the outside of the grounding conductor 6 with the connecting fitting 8 fixed to the grounding conductor 6 by screws 7a and 7b.
[0025]
FIG. 4A is an enlarged perspective view of the front side of an earth cover used in the communication line protector according to the embodiment of the present invention, and FIG. 4B is an enlarged perspective view of the back side thereof.
[0026]
On the back surface of the ground cover 9, a convex portion 9a which is inserted into the through hole 8c of the connecting fitting 8 and the through hole 6c of the ground conductor 6 in a press-fit state to suppress the vertical movement, and the heads of the screws 7a and 7b are included. And two concave portions 9b are formed.
[0027]
FIG. 5 is a side view showing a state in which the signal line protector according to the embodiment of the present invention is stacked before the earth cover is attached, and FIG. 6 is a perspective view showing a state where the signal line protector is stacked and the earth cover is attached. is there.
[0028]
Here, the stacking operation of the communication line protector will be described. First, the B-side end of the claw 15a formed on the bottom plate 15 of the upper protector is fitted to the A-side end of the rail 16a formed on the lower protector lid 16 shown in FIG. And slide the protector on top in the direction of the white arrow. FIG. 7A is a view showing a state during the sliding.
[0029]
By this sliding operation, the end surface on the B side of the bottom plate 15 comes into contact with the projection 16b formed on the rail 16a of the lid 16. When the lid 16 is further slid in the direction of the arrow from this contact state, as shown in FIG. 7B, the contact portion of the claw 15a rides on the projection 16b, as shown in FIG. And falls into the space 16c of the lid 16. As a result, the lower protector lid 16 and the upper protector bottom plate 15 are connected in a completely engaged state.
[0030]
Next, the connection between the lower ground conductor 6 and the upper ground conductor 6 is performed by the connection fitting 8. First, the through holes 8a and 8b of the connection fitting 8 shown in FIG. 2 are made to correspond to the screw hole 6b of the upper ground conductor 6 and the screw hole 6a of the lower ground conductor 6 as shown in FIG. 7b. As a result, the upper ground conductor 6 and the lower ground conductor 6 are connected by the connection fitting 8.
[0031]
The lower arc of the through hole 6c formed in the ground conductor 6 which is formed above in the ground state and the semicircular notch 8d formed in the upper part of the connection fitting 8 correspond to the through hole state. The arc above the through hole 6c formed in the ground conductor 6 and the semicircular notch 8d formed in the lower part of the connection fitting 8 correspond to the through hole state.
[0032]
The protrusions 9a of the ground cover 9 are pressed into the upper and lower through holes, respectively, so that the heads of the screws 7a are housed in the upper recesses 9b and the heads of the screws 7b are housed in the lower recesses 9b. You. Since the projections 9a are in a press-fit state, the two earth covers 9 are fixed in a state where the connection portions of the ground conductors 6 are covered by the connection fittings 8 as shown in FIG.
[0033]
When separating the stacked protectors, the convex portion 9a is separated from the through hole by pulling the ground cover 9 toward the user. Next, the screws 7 a and 7 b are removed to separate the connection fitting 8 from the ground conductor 6. Thus, the connection between the upper and lower ground conductors 6 is released. In this state, when the protector placed on top is pulled out in the direction opposite to the direction of the white arrow shown in FIG. 6, the claw 15a shown in FIG. As shown in FIG. 7 (b), the claw 15a is disengaged from the protruding portion 16b by being climbed on the protruding portion 16b and further pulled out, as shown in FIG. Is separated from the protector lid 16.
[0034]
FIG. 8 is an exploded perspective view showing a configuration of a main part of the power line protector according to the embodiment of the present invention, and FIG. 9 is a perspective view showing an external shape of the power line protector according to the embodiment of the present invention.
[0035]
A power supply line protector 20 according to the present invention includes a board 24 on which a plug-in 21 for taking in commercial power is connected via a cord and on which a security circuit of commercial power and a ground wiring terminal 22 are mounted. A bottom plate 25 is provided, and a cover 26 that covers the substrate 24 and is fastened to the bottom plate 25 is provided. The lid 26 is formed with an opening 23 for connecting a ground wire to a portion corresponding to the ground wiring terminal. The opening 23 is provided with a detachable ground wiring part cover 27.
[0036]
Similarly to the signal line protector 10, a rail 16a on a pair of grooves is formed on an upper portion of the lid 26, and a claw 15a fitted to the rail 16a is formed on a lower portion of the bottom plate 15. A pair of engagement grooves 15b is formed near one end of the claw 15a, and the engagement groove 15b is formed at a position corresponding to the pair of engagement grooves 15b of the rail 16a formed on the top of the lid 26. A pair of fitting projections 16b are formed. Further, a ground conductor is formed. This ground conductor is configured similarly to the signal line protector 10 described above.
[0037]
The ground wiring terminal 22 is composed of two terminals, and one ground line is branched and attached. This is a configuration for ensuring grounding. Even if the screw of one terminal is loosened, grounding can be reliably performed from the other terminal.
[0038]
FIG. 10 is a perspective view showing a state in which the signal line protector is stacked on the power supply line protector according to the embodiment of the present invention.
[0039]
Thus, the signal line protector 10 can be stacked on the power supply line protector 20. In this example, one signal line protector 10 is stacked, but a plurality of signal line protectors 10 can be further stacked thereon. The power line protector 20 can be stacked on the signal line protector 10. The stacking operation and the connection operation of the grounding conductor 6 by the connection fitting 8 can be performed in the same manner as in the signal line protector described above.
[0040]
【The invention's effect】
As described above, according to the present invention, a plurality of protectors can be stacked by a simple operation, and the ground conductors can be sequentially connected, without connecting a grounding cable to each stacked protector. The ground potential can be reliably connected to the lightning arrester circuit by one ground wiring. Furthermore, since the number of cables is reduced, the arrangement around the device can be improved, and safety can be improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of the entire configuration of a communication line network related to a protector according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating a configuration of a main part of the signal line protector according to the embodiment of the present invention.
FIG. 3 is a perspective view showing the external shape of the signal line protector according to the embodiment of the present invention.
FIG. 4A is an enlarged perspective view of the front side of an earth cover used in the signal line protector according to the embodiment of the present invention, and FIG. 4B is an enlarged perspective view of the back side thereof.
FIG. 5 is a side view showing a stacked state of the signal line protector according to the embodiment of the present invention before the ground cover is attached.
FIG. 6 is a perspective view showing a state in which signal line protectors according to the embodiment of the present invention are stacked and an earth cover is attached.
FIG. 7A is an enlarged perspective view showing an engagement state of a rail and a nail when stacking signal protectors according to the embodiment of the present invention, and FIG. 7B is an enlarged perspective view showing a state in which the nail rides on a protrusion; FIG. 3C is an enlarged perspective view showing a state where the claws have fallen into the space.
FIG. 8 is an exploded perspective view showing a configuration of a main part of the power line protector according to the embodiment of the present invention.
FIG. 9 is a perspective view showing the external shape of the power line protector according to the embodiment of the present invention.
FIG. 10 is a perspective view showing a state in which the signal line protector is stacked on the power supply line protector according to the embodiment of the present invention.
FIG. 11 is a diagram showing an example of the entire configuration of a communication line network related to a conventional protector.
FIG. 12 is a diagram showing an example of an electric circuit of a conventional protector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Communication line network 3 HUB device 4 Portable computer terminal device 5 Desktop computer terminal device 6 Ground conductors 6a, 6b Screw holes 6c, 8a, 8b, 8c Through holes 7a, 7b Screw 8 Connecting metal fitting 8d Notch 9 Ground cover 9a Convex part 9b Concave part 10 Protector for signal line 11 Signal input terminal 12 Signal output terminal 14, 24 Board 15, 25 Bottom plate 15a Claw 15b Engagement groove 16, 26 Lid 16a Rail 16b Projection 16c Space 20 Power supply line protector DESCRIPTION OF SYMBOLS 21 Insertion plug 22 Ground wiring terminal 23 Opening 27 Ground wiring part cover

Claims (4)

信号入力端子と、信号出力端子と、この信号入力端子とこの信号出力端子との対応する電極をそれぞれ相互に接続する複数の導体と、この複数の導体と接地電位との間にそれぞれ接続された避雷放電素子とが基板に実装され、この基板が取付けられた底板と、この基板を覆うとともにこの底板に締付けられる蓋とを備えた信号線用保安器において、
前記底板の側部と前記蓋の側部とに縦方向に連続する溝が設けられ、
この溝内に嵌まる一枚の接地導体板が設けられ、この接地導体板には蓋内部に突出し前記基板内の接地電位端子に接続される突起が設けられ、
前記接地導体板には上下に2個のネジ孔が形成され、
前記保安器が複数積み重ねられて利用されるとき、前記溝内の前記接地導体板のネジ孔に連結されて上下の保安器を連結する連結金具を備え、
前記連結金具には、積み重ねられた上下の前記接地導体板のネジ孔のそれぞれ一方のネジ孔に重なるネジ孔が設けられ、連結金具と前記接地導体板とを連結して上下の保安器を連結するネジが取り付けられる
ことを特徴とする信号線用保安器。
A signal input terminal, a signal output terminal, a plurality of conductors interconnecting corresponding electrodes of the signal input terminal and the signal output terminal, respectively, and a plurality of conductors connected between the plurality of conductors and a ground potential, respectively. A lightning protection device is mounted on a substrate, a signal line protector including a bottom plate to which the substrate is attached, and a lid that covers the substrate and is fastened to the bottom plate.
A groove that is continuous in the vertical direction is provided on a side of the bottom plate and a side of the lid,
One ground conductor plate fitted in the groove is provided, and the ground conductor plate is provided with a projection protruding inside the lid and connected to a ground potential terminal in the substrate,
Two screw holes are formed on the ground conductor plate at the top and bottom,
When a plurality of the protectors are used by being stacked, a connection metal fitting is connected to a screw hole of the ground conductor plate in the groove to connect upper and lower protectors,
The connection metal fitting is provided with screw holes overlapping one screw hole of each of the screw holes of the stacked upper and lower ground conductor plates, and connects the connection metal fitting and the ground conductor plate to connect the upper and lower protectors. A signal line protector, which is provided with a screw .
前記蓋の上部には一対のレールが形成され、前記底板の下部にはこのレールに嵌合するツメが形成された請求項1記載の信号線用保安器。2. The signal line protector according to claim 1, wherein a pair of rails is formed on an upper portion of the lid, and a claw fitting with the rail is formed on a lower portion of the bottom plate. 前記底板、前記蓋、前記接地導体、および前記連結金具の形状が請求項1記載の信号線用保安器と等しい形状であり、その内部に商用電源の保安回路が実装され、前記信号線用保安器を積み重ねて利用される電源線用保安器。 The shape of the bottom plate, the lid, the grounding conductor, and the connection fitting has the same shape as that of the signal line protector according to claim 1, wherein a security circuit of a commercial power supply is mounted therein, and the signal line security is provided. Power line protector that is used by stacking containers. 接地線が取り付けられる接地配線用端子が前記接地導体板とは別に前記基板内に設けられ、この接地配線用端子部分を覆う着脱自在なカバーが前記蓋に設けられた請求項3記載の電源線用保安器。 4. The power supply line according to claim 3, wherein a ground wiring terminal to which a ground wire is attached is provided in the substrate separately from the ground conductor plate, and a removable cover for covering the ground wiring terminal portion is provided on the lid. Protector.
JP29567298A 1998-10-16 1998-10-16 Protector Expired - Lifetime JP3558895B2 (en)

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