JPH06235738A - Detector - Google Patents
DetectorInfo
- Publication number
- JPH06235738A JPH06235738A JP4599993A JP4599993A JPH06235738A JP H06235738 A JPH06235738 A JP H06235738A JP 4599993 A JP4599993 A JP 4599993A JP 4599993 A JP4599993 A JP 4599993A JP H06235738 A JPH06235738 A JP H06235738A
- Authority
- JP
- Japan
- Prior art keywords
- probe
- voltage
- resin
- conductive material
- conductive member
- 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.)
- Pending
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、非接触状態あるいは
接触状態で電圧を計測して表示する検電器に用いるプロ
ーブに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a probe used in a voltage detector for measuring and displaying a voltage in a non-contact state or a contact state.
【0002】[0002]
【従来の技術】従来より電圧を計測して表示する手段と
して検電器が広く用いられている。2. Description of the Related Art Conventionally, a voltage detector has been widely used as a means for measuring and displaying a voltage.
【0003】図3は検電器の一例を示す概略斜視図であ
る。本体1の一端には、導電性ゴムで成るプローブ2が
装着されており、このプローブ2にて計測対象の電圧が
検出される。検出された電圧は検電プローブ2に接続さ
れかつ本体1に内蔵された分圧手段にて分圧される。そ
して、分圧手段の出力電圧は分圧手段に接続されかつ本
体1に内蔵された計測表示手段にて計測され、その値が
本体1の側面に配設された液晶表示板3に表示される。FIG. 3 is a schematic perspective view showing an example of a voltage detector. A probe 2 made of conductive rubber is attached to one end of the main body 1, and the probe 2 detects a voltage to be measured. The detected voltage is connected to the detection probe 2 and divided by the voltage dividing means built in the main body 1. Then, the output voltage of the voltage dividing means is measured by the measuring and displaying means which is connected to the voltage dividing means and built in the main body 1, and the value is displayed on the liquid crystal display plate 3 provided on the side surface of the main body 1. .
【0004】このような構成において、例えば絶縁被覆
電線の電圧を計測し表示させたい場合は、作業者が検電
器の本体1を持ってプローブ2を絶縁被覆電線の表面に
押し当て、本体1に配設されたスイッチ4を押す。これ
により絶縁被覆電線の電圧が計測され、その値が液晶表
示板3に表示される。上述した検電方法は非接触状態の
場合であるが、計測対象の電圧充電部に直接触れること
ができる場合は、非接触状態での検電時の結合容量変化
に起因する誤差を回避するために、プローブ2を計測対
象の電圧充電部に接触させて検電を行なうことがある。
なお、この場合においても非接触検電時と同様、検電器
のアース側は本体1を介して人体へ容量結合されてい
る。In such a structure, for example, when it is desired to measure and display the voltage of the insulation-coated electric wire, an operator holds the main body 1 of the voltage detector and presses the probe 2 against the surface of the insulation-coated electric wire, The switch 4 provided is pushed. As a result, the voltage of the insulation-coated wire is measured, and the value is displayed on the liquid crystal display board 3. The above-mentioned voltage detection method is for a non-contact state, but if the voltage charging unit to be measured can be directly touched, in order to avoid an error caused by a change in coupling capacitance during power detection in a non-contact state. In some cases, the probe 2 may be brought into contact with the voltage charging unit to be measured to perform voltage detection.
Also in this case, the ground side of the voltage detector is capacitively coupled to the human body through the body 1 as in the non-contact voltage detection.
【0005】[0005]
【発明が解決しようとする課題】上述した従来の検電器
に用いられているプローブは、導電性ゴムで成っている
ため、摩擦係数が大きくかつたわみ易く、その抵抗値は
たかだか数+kΩである。従って、例えば家庭用電源の
コンセント等の狭い隙間に差込むことが困難であるた
め、差込み最中に誤まってプローブに触れると感電のお
それがあり、検電作業の安全面で問題があった。Since the probe used in the above-mentioned conventional voltage detector is made of conductive rubber, it has a large friction coefficient and is easily bent, and its resistance value is at most + kΩ. Therefore, for example, it is difficult to insert it into a narrow gap such as an outlet of a household power supply, and if the user accidentally touches the probe during insertion, there is a risk of electric shock, which is a problem in terms of safety of power detection work. .
【0006】この発明は上述した事情から成されたもの
であり、この発明の目的は、検電作業の安全性が高い検
電器を提供することにある。The present invention has been made under the circumstances described above, and an object of the present invention is to provide a voltage detector having a high level of safety in the voltage detection work.
【0007】[0007]
【課題を解決するための手段】この発明は、非接触状態
あるいは接触状態で電圧を計測して表示する検電器に用
いるプローブに関するものであり、この発明の上記目的
は、絶縁性の樹脂で被覆された導電材でなる前記電圧を
検出するためのプローブを具備することによって達成さ
れる。SUMMARY OF THE INVENTION The present invention relates to a probe used in a voltage detector for measuring and displaying a voltage in a non-contact state or a contact state, and the above-mentioned object of the present invention is to cover with an insulating resin. This is accomplished by providing a probe for detecting the voltage, which is made of a conductive material.
【0008】[0008]
【作用】この発明にあっては、プローブを構成する導電
材を絶縁性の高い樹脂で被覆するようにしているので、
人体が触れたときの感電を防止することができる。In the present invention, the conductive material forming the probe is coated with a resin having a high insulating property.
It is possible to prevent electric shock when touched by the human body.
【0009】[0009]
【実施例】図1はこの発明の検電器に用いるプローブの
一例を示す概略斜視図であり、図2はその側面図であ
る。1 is a schematic perspective view showing an example of a probe used in a voltage detector of the present invention, and FIG. 2 is a side view thereof.
【0010】このプローブ10は、検電器の本体に内蔵
された分圧手段に配線11を介して接続され、周囲が絶
縁性の樹脂12で覆われた導電材13で成る。このよう
に、導電材13を絶縁性の樹脂12で被覆することによ
り、作業者が誤まってプローブ10に触れても感電のお
それはなく、検電作業の安全性を高めることが出来る。
この絶縁性の樹脂12としてフレキシブルであって耐環
境性の高いものを用いれば使用時の破損等を減少させて
長寿命化を図ることができるので、例えばポリイミド樹
脂が使用される。そして、ポリイミド樹脂で被覆した
後、さらにポリプロピレンで裏打ちすれば、強度上さら
に優れたものとなる。また、導電材13としては導電性
の良好なものが計測上望ましく、例えば銅箔が使用され
る。The probe 10 is made of a conductive material 13 which is connected to a voltage dividing means built in the main body of a voltage detector via a wiring 11 and whose periphery is covered with an insulating resin 12. As described above, by covering the conductive material 13 with the insulating resin 12, there is no risk of electric shock even if an operator touches the probe 10 by mistake, and the safety of the power detection operation can be improved.
If a flexible and highly environmentally resistant resin 12 is used as the insulating resin 12, damages during use can be reduced and the service life can be extended. Therefore, for example, a polyimide resin is used. Then, after coating with a polyimide resin and further backing with polypropylene, the strength is further improved. Further, as the conductive material 13, a material having good conductivity is desirable in measurement, and for example, copper foil is used.
【0011】ここで、プローブを従来の導電型からこの
発明の絶縁型に変えても検電作業に支障がないことを説
明する。計測対象とプローブの対向面積を数十mm2と
し、樹脂膜の厚みを100μm程度と仮定すると、静電
容量は数百pFとなる。まず、接触状態での検電時にお
いては、計測対象の電源周波数が50Hzであったと仮
定しても、プローブの交流インピーダンスはたかだか数
MΩであり、検電器本体の入力インピーダンスを1GΩ
程度に設定してやればプローブの電圧損失は極めて少な
い。そして、非接触状態での検電時においては、計測対
象側を覆っている絶縁物の結合容量への寄与の方が格段
に大きく、プローブ側の樹脂膜の有無は無視し得る。す
なわち、導電型のプローブを用いたときでさえ計測対象
とプローブとの結合容量は数pFと低く、絶縁型のプロ
ーブを用いたときに挿入される数百pFの直列静電容量
は無視し得るのである。Here, it will be explained that even if the probe is changed from the conventional conductivity type to the insulation type of the present invention, there is no hindrance to the power detection work. Assuming that the facing area between the measurement target and the probe is several tens of mm 2 and the thickness of the resin film is approximately 100 μm, the electrostatic capacitance is several hundred pF. First, at the time of voltage detection in a contact state, even assuming that the power supply frequency of the measurement target was 50 Hz, the AC impedance of the probe was at most several MΩ, and the input impedance of the voltage detector main body was 1 GΩ.
The voltage loss of the probe is extremely small if it is set to a certain level. Then, at the time of voltage detection in the non-contact state, the contribution of the insulator covering the measurement target side to the coupling capacitance is remarkably large, and the presence or absence of the resin film on the probe side can be ignored. That is, even when the conductive probe is used, the coupling capacitance between the measurement target and the probe is as low as a few pF, and the series capacitance of several hundred pF inserted when the insulating probe is used can be ignored. Of.
【0012】[0012]
【発明の効果】以上のようにこの発明の検電器によれ
ば、検電作業の安全性を高めることができるので、検電
作業の迅速化を図ることができると共に、検電器の普及
率を高めることができる。As described above, according to the voltage detector of the present invention, it is possible to enhance the safety of the voltage detection work, so that it is possible to speed up the voltage detection work and increase the diffusion rate of the voltage detector. Can be increased.
【図1】この発明の検電器に用いるプローブの一例を示
す概略斜視図である。FIG. 1 is a schematic perspective view showing an example of a probe used in a voltage detector of the present invention.
【図2】図1に示すこの発明の検電器に用いるプローブ
の側面断面図である。FIG. 2 is a side sectional view of a probe used in the voltage detector of the present invention shown in FIG.
【図3】検電器の一例を示す概略斜視図である。FIG. 3 is a schematic perspective view showing an example of a voltage detector.
1 本体 2,10 プローブ 3 液晶表示板 4 スイッチ 11 配線 12 樹脂 13 導電材 1 main body 2, 10 probe 3 liquid crystal display board 4 switch 11 wiring 12 resin 13 conductive material
Claims (2)
り前記計測対象の電圧を計測して表示する検電器におい
て、絶縁性の樹脂で被覆された導電材でなる前記電圧を
検出するためのプローブを備えたことを特徴とする検電
器。1. A voltage detector for measuring and displaying a voltage of the measurement target by bringing the voltage of the measurement target close to or in contact with the measurement target, and a probe for detecting the voltage made of a conductive material coated with an insulating resin. An electroscope characterized by having.
1に記載の検電器。2. The voltage detector according to claim 1, wherein the resin is a polyimide resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4599993A JPH06235738A (en) | 1993-02-10 | 1993-02-10 | Detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4599993A JPH06235738A (en) | 1993-02-10 | 1993-02-10 | Detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06235738A true JPH06235738A (en) | 1994-08-23 |
Family
ID=12734798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4599993A Pending JPH06235738A (en) | 1993-02-10 | 1993-02-10 | Detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06235738A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008058255A (en) * | 2006-09-04 | 2008-03-13 | Hioki Ee Corp | Electroscope |
WO2011001826A1 (en) * | 2009-06-29 | 2011-01-06 | 長谷川電機工業株式会社 | Voltage detector and manufacturing method thereof |
KR101953070B1 (en) * | 2018-10-12 | 2019-02-27 | 한전케이피에스 주식회사 | Detachable Electrode |
-
1993
- 1993-02-10 JP JP4599993A patent/JPH06235738A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008058255A (en) * | 2006-09-04 | 2008-03-13 | Hioki Ee Corp | Electroscope |
JP4641988B2 (en) * | 2006-09-04 | 2011-03-02 | 日置電機株式会社 | Voltage detector |
WO2011001826A1 (en) * | 2009-06-29 | 2011-01-06 | 長谷川電機工業株式会社 | Voltage detector and manufacturing method thereof |
KR101953070B1 (en) * | 2018-10-12 | 2019-02-27 | 한전케이피에스 주식회사 | Detachable Electrode |
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