JPS63195981A - Safety device - Google Patents
Safety deviceInfo
- Publication number
- JPS63195981A JPS63195981A JP62025885A JP2588587A JPS63195981A JP S63195981 A JPS63195981 A JP S63195981A JP 62025885 A JP62025885 A JP 62025885A JP 2588587 A JP2588587 A JP 2588587A JP S63195981 A JPS63195981 A JP S63195981A
- Authority
- JP
- Japan
- Prior art keywords
- side plug
- conductor
- input
- output side
- protector
- 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
- 239000004020 conductor Substances 0.000 claims description 40
- 239000003990 capacitor Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000001012 protector Effects 0.000 claims description 14
- 229910000859 α-Fe Inorganic materials 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の技術分野〕
本発明は、ＣＡＴＶなどの高周波信号を伝送する同軸ケ
ーブルとテレビ受像機の信号入力部との間に設置し、異
常電圧を遮断し、高周波信号を損失なく伝送すると共に
、高周波信号の漏洩を防止する保安器に関する。Detailed Description of the Invention [Technical Field of the Invention] The present invention provides a coaxial cable that is installed between a coaxial cable that transmits high-frequency signals such as CATV and a signal input section of a television receiver, and that cuts off abnormal voltage and transmits high-frequency signals. The present invention relates to a protector that transmits signals without loss and prevents leakage of high-frequency signals.
［従来の技術とその欠点コ
従来の保安器は雷などの異常電圧の遮断や高周波信号の
伝送は考慮されていたが、高周波信号の漏洩に関しては
殆ど考慮がはられれていなかった。[Conventional technology and its drawbacks] Conventional protectors take into account the ability to cut off abnormal voltages such as those caused by lightning and the transmission of high-frequency signals, but little consideration is given to the leakage of high-frequency signals.
しかしながら都市型ＣＡＴＶや強電界地区におけるＣＡ
ＴＶにおいては、外部妨害波に打ち勝つために増幅の出
力を大きくし、高いレベルの高周波信号を伝送するよう
になってきた。従来の保安器は高域通過型の特性を有し
ており、しかも同軸ケーブルの入力側と出力側の接栓の
外部導体は同一金属ケース内に設置されず、絶縁物を介
して保持されていたため、この部分より高周波信号が漏
洩し、他に妨害を与える欠点があった。However, urban CATV and CA in strong electric field areas
In TVs, in order to overcome external interference waves, the amplification output has been increased to transmit high-level high-frequency signals. Conventional protectors have high-pass characteristics, and the outer conductors of the connectors on the input and output sides of the coaxial cable are not installed in the same metal case, but are held through an insulator. Therefore, there was a drawback that high frequency signals leaked from this part and caused interference to others.
［発明の目的］
本発明は上記のような実情に鑑みてなされたもので、入
力側接栓と出力側接栓の間で直流は通過させずに高周波
信号を通過させる一方、漏洩を防止することのできる保
安器を提供することを目的とする。[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and aims to prevent leakage while allowing high frequency signals to pass between the input side plug and the output side plug without passing direct current. The purpose is to provide a safety device that can
［発明の要点コ
本発明は、入力側接栓と出力側接栓との間に絶縁した２
本線を巻回したフェライト素子（以下「トランス」とも
称する）を付加したもので、該２本線の一次側を入力側
接栓の内部導体及び外部導体にそれぞれ接続し、同二次
側を出力側接栓の内部導体及び外部導体にそれぞれ接続
すると共に、出力側接栓の外部導体と、接地されている
保安器本体の金属ケースとの間にコンデンサを挿入する
ようにしたものである。[Key Points of the Invention] The present invention provides two insulated connectors between the input side plug and the output side plug.
A ferrite element (hereinafter also referred to as a "transformer") wound around the main wire is added, and the primary side of the two wires is connected to the internal conductor and external conductor of the input side plug, respectively, and the secondary side is connected to the output side. A capacitor is connected to the inner conductor and outer conductor of the connector, and is inserted between the outer conductor of the output connector and the grounded metal case of the main body of the protector.
［発明の実施例〕 以下図面を参照して本発明の一実施例を説明する。[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.
第１図はその回路構成を示すもので、１は入力側接栓、
ｌａ、ｌｂはそれぞれの内部導体、外部導体であり、同
様に２は外部側接栓、２ａ、２ｂはそれぞれの内部導体
、外部導体である。入力側接栓１の外部導体１ｂは保安
器本体の金属ケース３に直接固定、接続され、この金属
ケース３がアースライン４を介して接地される。また、
出力側接栓２の外部導体２ｂは接地コンデンサ５を介し
て高周波的に金属ケース３と接続される。入力側接栓１
の内部導体１ａと金属ケース間に、避雷器６が接続され
る。Figure 1 shows the circuit configuration, where 1 is the input side plug;
la and lb are the respective inner conductors and outer conductors, 2 is the outer side plug, and 2a and 2b are the respective inner conductors and outer conductors. The external conductor 1b of the input side plug 1 is directly fixed and connected to the metal case 3 of the main body of the protector, and this metal case 3 is grounded via the earth line 4. Also,
The outer conductor 2b of the output side plug 2 is connected to the metal case 3 via a grounding capacitor 5 at high frequency. Input side plug 1
A lightning arrester 6 is connected between the internal conductor 1a and the metal case.
入力側接栓１の内部導体１ａと外部導体１ｂの間に、フ
ェライトに２本線を巻回して構成されるトランス７の一
次側が接続され、同トランス７の二次側が出力側接栓２
の内部導体２ａと外部導体２ｂとの間に接続される。さ
らにトランス７の二次側には、整合コンデンサ８が接続
される。The primary side of a transformer 7 made up of two wires wound around a ferrite is connected between the internal conductor 1a and the external conductor 1b of the input side plug 1, and the secondary side of the transformer 7 is connected to the output side plug 2.
is connected between an inner conductor 2a and an outer conductor 2b. Furthermore, a matching capacitor 8 is connected to the secondary side of the transformer 7.
上記したように金属ケース３は、異常電圧をア便宜的に
名付けたもので、一般にはＣＡＴＶ同輔ケーブル側に接
続し、その反対に出力側を家庭内のテレビ受像機側に接
続するもので、高周波信号に対しては可逆性を有してい
る。As mentioned above, the metal case 3 is a convenient name for abnormal voltage, and is generally connected to the CATV cable side, and conversely, the output side is connected to the TV receiver in the home. , has reversibility for high frequency signals.
次に第２図によりその断面構造を示す。入力側接栓１は
金属ケース３に入力側接栓締め付はナツト１１で直接固
定する。また、出力側接栓２は絶縁物１２を介して金属
ケース３と絶縁し、さらに機械的に回転しないように出
力側接栓締め付はナツト１３で固定する。接地コンデン
サ５はリード線を極力短かくし、大容量の貫通コンデン
サあるいはセラミックコンデンサを複数個間隔をあけて
配設される。コンデンサ５．８はすべて耐電圧が５００
Ｖ以上のものが用いられ、整合コンデンサ８は５［ｐＦ
］のものが、接地コンデンサ５は２２００［ｐＦ］のも
のが４ケが用いられる。そして、以上の回路全体が、金
属カバー１４が覆われる。Next, FIG. 2 shows its cross-sectional structure. The input side plug 1 is directly fixed to the metal case 3 with a nut 11 to tighten the input side plug. Further, the output side plug 2 is insulated from the metal case 3 via an insulator 12, and the output side plug is tightened with a nut 13 to prevent mechanical rotation. The grounding capacitor 5 has a lead wire as short as possible, and a plurality of large-capacity feedthrough capacitors or ceramic capacitors are arranged at intervals. All capacitors 5.8 have a withstand voltage of 500
V or more is used, and the matching capacitor 8 is 5 [pF
], and four ground capacitors 5 of 2200 [pF] are used. Then, the entire circuit described above is covered with the metal cover 14.
上記のような構成の保安器においては、ＣＡＴＶに用い
られる高周波信号は入力側接栓１の内部導体１ａに伝送
されてトランス７を通り、出力側接栓２の内部導体２ａ
に伝達される。一方、入力側接栓１の外部導体１ｂと出
力側接栓２の外部導体２ｂとの間では金属ケース３と接
地コンデンサ５により高周波信号は導通している。In the protector configured as described above, a high frequency signal used for CATV is transmitted to the internal conductor 1a of the input side plug 1, passes through the transformer 7, and is transmitted to the internal conductor 2a of the output side plug 2.
transmitted to. On the other hand, high frequency signals are conducted between the external conductor 1b of the input side plug 1 and the external conductor 2b of the output side plug 2 by the metal case 3 and the grounding capacitor 5.
ここで落雷や漏電による異常電圧が入力側接栓１の内部
導体１ａと外部導体１ｂに印加されると、トランス７に
よって短絡されて電圧は降下する。When abnormal voltage due to lightning or electric leakage is applied to the inner conductor 1a and outer conductor 1b of the input side plug 1, a short circuit is caused by the transformer 7 and the voltage drops.
この際の急峻な波形の高電圧は避雷器６により短絡され
て電圧は降下する。一方、出力側接栓２はトランス７で
絶縁状態となり、異常電圧は伝送されない。The high voltage with a steep waveform at this time is short-circuited by the lightning arrester 6, and the voltage drops. On the other hand, the output side plug 2 is insulated by the transformer 7, and no abnormal voltage is transmitted.
また、入力側接栓１の外部導体１ｂとアースライン４に
印加された場合、出力側接栓２の外部導体２ｂは接地コ
ンデンサ５により直流的に遮断された状態となっている
のでやはり異常電圧は伝送されず、出力側接栓２に接続
されたテレビ受像機を保護する。In addition, when a voltage is applied to the external conductor 1b of the input side plug 1 and the ground line 4, the external conductor 2b of the output side plug 2 is in a DC-blocked state by the grounding capacitor 5, so the abnormal voltage is also applied. is not transmitted and protects the television receiver connected to the output connector 2.
次に出力側で例えば落雷時の逆閃絡のように異常電圧が
発生し、あるいはテレビ受像機が故障して受像機より異
常電圧が出力側接栓２に加えられた場合でも、直流阻止
用の接地コンデンサ５が介在しているために異常電圧は
入力接栓１に伝送されず、ＣＡＴＶ回路を保護すること
ができる。Next, even if an abnormal voltage occurs on the output side, such as a reverse flash during a lightning strike, or if the TV receiver malfunctions and abnormal voltage is applied from the receiver to the output side plug 2, the DC blocking Since the grounding capacitor 5 is interposed, abnormal voltage is not transmitted to the input connector 1, and the CATV circuit can be protected.
次に本発明の主要部であるトランス７の構成例を第３図
により示す。Next, an example of the configuration of the transformer 7, which is the main part of the present invention, is shown in FIG.
第３図（ａ）は短かいフェライト棒の軸方向に２つの穴
を穿設した眼鏡型フェライト７１に絶縁した２本組の導
線７２．７３を巻回したものである。 第３図（ｂ）は
リング型フェライト７４の環部に絶縁した２本組の導線
７５．７６を巻回したものである。この場合、巻数は１
〜２回が適当である。FIG. 3(a) shows a pair of insulated conducting wires 72 and 73 wound around a spectacle-shaped ferrite 71 in which two holes are bored in the axial direction of a short ferrite rod. FIG. 3(b) shows a ring-shaped ferrite 74 in which a pair of insulated conducting wires 75 and 76 are wound around the ring. In this case, the number of turns is 1
~2 times is appropriate.
上記いずれの場合にも、フェライト７１．７４によって
線７２，７３，７５．７６が傷付くと耐電圧が低下する
ため、フェライト７１．７４には保護カバーを付けた方
がよい、また、フェライト７１．７４としては、高周波
帯で低損失、低周波帯で透磁率の高いものが適している
。In any of the above cases, if the wires 72, 73, 75.76 are damaged by the ferrite 71.74, the withstand voltage will decrease, so it is better to attach a protective cover to the ferrite 71.74. As for .74, one that has low loss in the high frequency band and high magnetic permeability in the low frequency band is suitable.
以上述べたようにトランス７を付加した場合、保安器の
入力周波数に対する漏洩量は第４図に破線で示す如ｉる
。参考までにトランス７を有していない従来の保安器の
同特性を実線Ａで示す。As described above, when the transformer 7 is added, the leakage amount with respect to the input frequency of the protector is as shown by the broken line in FIG. For reference, the same characteristics of a conventional protector without the transformer 7 are shown by a solid line A.
図示する如く周波数帯域５０〜３００［ＭＨ２］で−４
０［ｄＢ］以下の漏洩量となっており、周辺の他の装置
等に影響なく、妨害を与えないレベルとなっている。-4 in the frequency band 50 to 300 [MH2] as shown in the figure.
The amount of leakage is less than 0 [dB], which is at a level that does not affect other devices in the vicinity and does not cause interference.
また、上記第１図に示した回路構成によれば、ＣＡＴＶ
用保安器の部品としてチョーク、結合コンデンサ等を除
去できるので、部品点数を少なくすることができるとい
う利点も有する。Furthermore, according to the circuit configuration shown in FIG.
Since chokes, coupling capacitors, etc. can be removed as parts of the safety device, there is also the advantage that the number of parts can be reduced.
［発明の効果］
以上詳記したように本発明によれば、入力端接栓と出力
側接栓との間に絶縁した２本線を巻回したフェライト素
子を付加し、該２本線の一次側を入力側接栓の内部導体
及び外部導体に、同二次側を出力側接栓の内部導体及び
外部導体にそれぞれ接続すると共に、出力側接栓の外部
導体と保安器本体の接地されている金属ケースとの間に
コンデンサを挿入するようにしたので、入力側接栓と出
力側接栓の間で直流の通過を阻止しながら高周波信号を
通過させ、かつ、高周波信号の漏洩を充分小さなレベル
とすることのできる漏洩防止型の保安器を提供すること
ができる。[Effects of the Invention] As detailed above, according to the present invention, a ferrite element in which two insulated wires are wound is added between the input end plug and the output end plug, and the primary side of the two wires is are connected to the internal conductor and external conductor of the input side plug, and the secondary side is connected to the internal conductor and external conductor of the output side plug, respectively, and the external conductor of the output side plug and the main body of the protector are grounded. Since a capacitor is inserted between the metal case and the input side plug, it is possible to block the passage of direct current between the input side plug and the output side plug while allowing high frequency signals to pass through, and to reduce the leakage of high frequency signals to a sufficiently small level. It is possible to provide a leak-proof protector that can be used as a protector.
図面は本発明の一実施例を示すもので、第１図は回路構
成を示す図、第２図は実装構造を示す縦断面図、第３図
は２本線巻フェライト（トランス）の具体構造を例示す
る図、第４図は本発明における周波数と漏洩量との関係
を示す図である。
１・・・入力側接栓、１ａ・・・入力端接栓内部導体、
１ｂ・・入力側接栓外部導体、２・・・出力側接栓、２
ａ・・・出力側接栓内部導体、２ｂ・・・出力側接栓外
部導体、３・・・金属ケース、４・・・アースライン、
５・・・接地コンデンサ、６・・・避雷器、７・・・ト
ランス、８・・・整合コンデンサ、１１・・・入力側接
栓締め付はナツト、１２・・・絶縁物、１３・・・出力
側接栓締め付はナツト、１４・・・金属カバー、７１・
・・眼鏡型フェライト、７２，７３，７５．７６・・・
導線、７４・・・リング型フェライト。
出願人代理人 弁理士 鈴江武彦
第１図
第２図The drawings show one embodiment of the present invention; FIG. 1 is a diagram showing a circuit configuration, FIG. 2 is a vertical cross-sectional view showing a mounting structure, and FIG. 3 is a concrete structure of a two-wire wound ferrite (transformer). An illustrative diagram, FIG. 4, is a diagram showing the relationship between frequency and leakage amount in the present invention. 1... Input side connector, 1a... Input end connector internal conductor,
1b... Input side connector external conductor, 2... Output side connector, 2
a... Output side connector internal conductor, 2b... Output side connector outer conductor, 3... Metal case, 4... Earth line,
5... Grounding capacitor, 6... Lightning arrester, 7... Transformer, 8... Matching capacitor, 11... Input side connector tightened with nut, 12... Insulator, 13... Tighten the output side plug with a nut, 14...metal cover, 71...
・・Glasses-type ferrite, 72, 73, 75.76...
Conductor, 74...Ring type ferrite. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2
Claims (1)
入力−出力間で直流の通過は阻止するが高周波信号は通
過させる保安器において、 フェライトに絶縁した２本線を巻回し、その一次側を入
力側接栓の内部導体と外部導体にそれぞれ接続し、同二
次側を出力側接栓の内部接栓と外部接栓に接続すると共
に、該出力側接栓の外部導体と上記金属ケースとの間に
複数個のコンデンサを挿入してなることを特徴とする漏
洩防止型の保安器。[Claims] In a protector that fixes the input side plug directly to a metal case and blocks the passage of direct current between the input and output of a coaxial cable but allows high frequency signals to pass, the protector has two insulated wires wound around ferrite. Connect the primary side to the internal conductor and external conductor of the input side plug, respectively, and connect the secondary side to the internal and external conductor of the output side plug, and connect the external conductor of the output side plug. A leak-proof protector characterized by having a plurality of capacitors inserted between a conductor and the metal case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025885A JPS63195981A (en) | 1987-02-06 | 1987-02-06 | Safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62025885A JPS63195981A (en) | 1987-02-06 | 1987-02-06 | Safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63195981A true JPS63195981A (en) | 1988-08-15 |
| JPH0554234B2 JPH0554234B2 (en) | 1993-08-12 |
Family
ID=12178238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62025885A Granted JPS63195981A (en) | 1987-02-06 | 1987-02-06 | Safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63195981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008136303A (en) * | 2006-11-28 | 2008-06-12 | Otowa Denki Kogyo Kk | Lightning surge protector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4531993B2 (en) * | 2000-05-29 | 2010-08-25 | マスプロ電工株式会社 | External noise prevention device and signal amplifier, protector, antenna plug |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617679U (en) * | 1979-07-18 | 1981-02-16 | ||
| JPS6033775U (en) * | 1983-08-15 | 1985-03-07 | 株式会社東芝 | Shield wire noise prevention device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51134119A (en) * | 1975-05-16 | 1976-11-20 | Matsushita Electric Ind Co Ltd | Keyed electronic musical instrument |
| JPS6033775B2 (en) * | 1981-05-28 | 1985-08-05 | 工業技術院長 | Method of manufacturing anti-reflective glass |
-
1987
- 1987-02-06 JP JP62025885A patent/JPS63195981A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617679U (en) * | 1979-07-18 | 1981-02-16 | ||
| JPS6033775U (en) * | 1983-08-15 | 1985-03-07 | 株式会社東芝 | Shield wire noise prevention device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008136303A (en) * | 2006-11-28 | 2008-06-12 | Otowa Denki Kogyo Kk | Lightning surge protector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0554234B2 (en) | 1993-08-12 |
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