JPS6146844U - Electric shock prevention device for inverter-driven power tools - Google Patents

Electric shock prevention device for inverter-driven power tools

Info

Publication number
JPS6146844U
JPS6146844U JP13179884U JP13179884U JPS6146844U JP S6146844 U JPS6146844 U JP S6146844U JP 13179884 U JP13179884 U JP 13179884U JP 13179884 U JP13179884 U JP 13179884U JP S6146844 U JPS6146844 U JP S6146844U
Authority
JP
Japan
Prior art keywords
inverter
prevention device
electric shock
driven power
ground wire
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
Application number
JP13179884U
Other languages
Japanese (ja)
Inventor
滋 田中
宏 林
Original Assignee
神鋼電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 神鋼電機株式会社 filed Critical 神鋼電機株式会社
Priority to JP13179884U priority Critical patent/JPS6146844U/en
Publication of JPS6146844U publication Critical patent/JPS6146844U/en
Pending legal-status Critical Current

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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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例のブロック線図、第２図は交流
電源、インバータ、電動工具間の結線の様子を示す図、
である。 ■・・・インバータ側、■・・・電動工具側、ａ・・・
アース線、ｂ・・・信号線、Ｒ１・・・電動工具側抵抗
器、Ｒ２・・・インバータ側抵抗器、Ｂ・・・信号電圧
源、Ａ・・・基準電圧源、ｃｐ・・・比較器。Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a diagram showing the connection between an AC power source, an inverter, and a power tool.
It is. ■...Inverter side, ■...Power tool side, a...
Ground wire, b...signal line, R1...power tool side resistor, R2...inverter side resistor, B...signal voltage source, A...reference voltage source, cp...comparison vessel.

Claims (1)

【実用新案登録請求の範囲】 インバータ駆動電動工具で、交流電源、インバータ、電
動工具間にアース線を備えたものにおいて、電動工具側
のアース線と、信号電圧源Ｂより信号電圧■で付勢され
る信号線との間に挿入の抵抗器Ｒ１、同じくインバータ
側のアース線と信号電圧源Ｂ負極側の接地間に挿入の抵
抗器Ｒ２、よＲ２ リなりアース線電圧信号。 、＋Ｒ２・■、を生成するアース線電圧信号生成手段と
、この電圧信号を基準電圧Ｖｓと比較し大小を判別、一
即一・■くＲ１＋Ｒ２ ＶＳ，なるときにインバータの入力電源をしゃ断する電
源しゃ断指令を出力する比較器、を備えたことを特徴と
するインバータ駆動電動工具の感電防止装置。[Scope of Claim for Utility Model Registration] In an inverter-driven power tool that is equipped with a ground wire between the AC power source, the inverter, and the power tool, the ground wire on the power tool side is energized by signal voltage ■ from signal voltage source B. Resistor R1 is inserted between the ground wire on the inverter side and the ground wire on the negative side of signal voltage source B. , +R2・■, and a power supply that compares this voltage signal with the reference voltage Vs to determine whether it is large or small, and immediately shuts off the input power supply of the inverter when it becomes 1・■ R1+R2 VS. An electric shock prevention device for an inverter-driven power tool, comprising a comparator that outputs a cutoff command.
JP13179884U 1984-08-29 1984-08-29 Electric shock prevention device for inverter-driven power tools Pending JPS6146844U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13179884U JPS6146844U (en) 1984-08-29 1984-08-29 Electric shock prevention device for inverter-driven power tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13179884U JPS6146844U (en) 1984-08-29 1984-08-29 Electric shock prevention device for inverter-driven power tools

Publications (1)

Publication Number Publication Date
JPS6146844U true JPS6146844U (en) 1986-03-28

Family

ID=30690372

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13179884U Pending JPS6146844U (en) 1984-08-29 1984-08-29 Electric shock prevention device for inverter-driven power tools

Country Status (1)

Country Link
JP (1) JPS6146844U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0370019U (en) * 1989-11-11 1991-07-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0370019U (en) * 1989-11-11 1991-07-12

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