CN2909656Y - Leakage alarm device of three-pin plug-in two-pin socket - Google Patents
Leakage alarm device of three-pin plug-in two-pin socket Download PDFInfo
- Publication number
- CN2909656Y CN2909656Y CN 200620025427 CN200620025427U CN2909656Y CN 2909656 Y CN2909656 Y CN 2909656Y CN 200620025427 CN200620025427 CN 200620025427 CN 200620025427 U CN200620025427 U CN 200620025427U CN 2909656 Y CN2909656 Y CN 2909656Y
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- pin
- jack
- jacks
- pins
- hole
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Abstract
A leak warning apparatus for socket with 3 jacks and 2 pins, having a third-pin jack, a diode, a fuse, second-jack pins, resistors, capacitors, a buzzer, a check lamp and a first-pin and second-pin jacks equipped on the circuit wafer. General holes corresponding to the first, the second and the third-pin jacks are on the front shell with three jacks; general holes corresponding to second-jack pins are on the back shell with two pins, one for ground wire of the power source, the other for live wire of the power source. The diode, the fuse, the pin for ground wire of the second-jack pins, and the third-pin jack form an earthing; the diode, one of the two capacitors and one of the two resistors form an electric source for the buzzer to warn. Three pins of appliance can plug in the first, second and third-pin jacks on the front shell, and the two second-jack pins can plug in the electric outlet, whereby eliminating the electric leak of metal plate or shell of the appliance, or the induced current of the appliance. The buzzer makes a warning sound when the leak of appliance exceeds a certain point.
Description
One, technical field
The utility model relates to earth leakage protective device, relates in particular to the electric leakage warning device that a kind of three jacks change two pin receptacle.
Two, background technology
Electrical appliances such as existing general computer, refrigerator, washing machine, microwave oven, mostly adopt three pin plug power lines, wherein two pins are that socket power is used, the 3rd pin is that the electrical appliance metal seat board or the earthing of casing are used, so as to the electric current of elimination electrical appliance induction, and eliminate electrical appliance leaks off to electrical appliance metal seat board or shell because of defective insulation electric current.
Again, the household electricity of China is the power supply supply of single-phase-two-wire, a line ground connection and wherein as ground wire, and another line is unearthed and as live wire.Three pin plug power lines can't directly use two receptacle electrical connectors of two lines, must cooperate three jacks to change two pin receptacle uses, but, after cooperating three jacks to change the use of two pin receptacle, the 3rd pin is unsettled, the electrical appliance user will face the danger of the electrical appliance electric leakage electric shock that is being hidden, and can't eliminate the electric current of electrical appliance induction.
Three, utility model content
Main purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of three jacks to change the electric leakage warning device of two pin receptacle, this three jack changes the function that two pin receptacle remain with tripod ground connection, and when electrical appliance metal seat board or body leakage amount over insurance silk load, the sound that can give a warning allows the user know electrical appliance seriously electric leakage.
The purpose of this utility model is realized by following technical scheme.
The utility model three jacks change the electric leakage warning device of two pin receptacle, comprise circuit board; It is characterized in that described circuit board is provided with a tripod jack, diode, fuse, two second hole pins, two resistors, two capacitors, buzzer, inspection and shows lamp and one first pin jack and crus secunda jack; One three jack fore shell, its antetheca are provided with the through hole of the corresponding first pin jack, crus secunda jack and tripod jack; One two pin back cover is provided with two through holes and the corresponding second hole pin; The described second hole pin, one of them is the power ground pin, another is the power firestreak pin; The power ground pin of described diode, fuse, two second hole pins and tripod jack form ground connection, the combination of one of one of diode and two capacitors and two resistors, and form the power supply that gives a warning for buzzer; When three plugs of an electrical appliance insert the first pin jack, crus secunda jack and tripod jack by the antetheca of fore shell, when two second hole pins insert supply socket, can eliminate the induced current of electrical appliance metallic plate or body leakage and electrical appliance, and when the electrical appliance electric leakage surpassed certain electric current, sound gave a warning.
Aforementioned three jacks change the electric leakage warning device of two pin receptacle, and wherein the lamp combination is shown in another resistor and inspection, shows live wire, the ground wire of power supply with inspection.
Aforementioned three jacks change the electric leakage warning device of two pin receptacle, and wherein inspection shows that lamp is the neon lamp.
Aforementioned three jacks change the electric leakage warning device of two pin receptacle, and wherein the second hole pin is that power line connects a plug formation.
The beneficial effect that the utility model three jacks change the electric leakage warning device of two pin receptacle is, can eliminate the electric current of electrical appliance induction, and when electrical appliance metallic plate or body leakage over insurance silk load, can be by the buzzer sound that gives a warning, in time allow the user learn electrical appliance seriously electric leakage, be convenient to take suitable remedial measure, effectively prevent the injury in addition that the electrical appliance electric leakage causes.
Four, description of drawings
Fig. 1 changes the electric leakage warning device board circuit schematic diagram of two pin receptacle for the utility model three jacks.
Fig. 2 changes the electric leakage warning device electronic component planar structure schematic diagram of two pin receptacle for the utility model three jacks.
Fig. 3 changes the electric leakage warning device stereochemical structure decomposing schematic representation of two pin receptacle for the utility model three jacks.
Major label description in figure: the A first pin jack, B crus secunda jack, C tripod jack, the D second hole pin, the E second hole pin, 1 circuit board, 2 diodes, 3 fuses, 4 liang of pin back covers, 5 three jack fore shells, 6 capacitors, 7 resistance, 8 capacitors, 9 buzzers, 10 neon lamps, 11 resistance, 12 inspections show that contact, 13 inspections show the lamp display aperture.
Five, embodiment
Consult Fig. 1, Fig. 2, shown in Figure 3, a kind of three jacks that the utility model provides change the electric leakage warning device of two pin receptacle, mainly comprise a circuit board 1, three jack fore shells 5 and one two a pin back cover 4; This circuit board 1 is provided with a tripod jack C, diode 2, fuse 3, two second hole pin D and E, two resistors 7 and 11, two capacitors 6 and 8, buzzers 9, neon lamp 10, the first pin jack A and a crus secunda jack B.The second hole pin D is the power ground pin, and the second hole pin E is the power firestreak pin; The antetheca of three jack fore shells 5 is provided with the inspection of a fire, ground wire and shows lamp display aperture 13, with so that neon lamp 10 is contained in wherein, and is provided with an inspection shows contact 12 on the one sidewall, shows fire, ground wire with inspection; The antetheca of fore shell 5 is provided with the through hole of the corresponding first pin jack A, crus secunda jack B and tripod jack C; Two pin back covers 4 are provided with two through holes and corresponding second hole pin D and the E.
At first, when one three plug inserts the first pin jack A, crus secunda jack B and tripod jack C by the antetheca of fore shell 5, when the second hole pin D and E insert supply socket, electric current reaches tripod jack C ground connection through the fuse 3 unidirectional importing second hole pin D (being the power ground pin) again by diode 2, thereby eliminates the induced current of electrical appliance.Secondly, continue again and meet the second hole pin D behind the capacitor 6 by the diode 2 that continues of the tripod jack C on the circuit board 1, and continue again behind the adapting electric voltage 7 capacitor 8 and buzzer 9; When electrical appliance metallic plate or body leakage over insurance silk load, fuse 3 opens circuit, and electric current through diode 2, imports buzzers 9 sound that gives a warning through resistance 7 by tripod jack C again; The resistor 11 of neon lamp 10 cooperates inspection to show that contact 12 constitutes the device that live wire, ground wire are shown in inspection.
From the above, when three jacks that use the utility model to provide change the electric leakage warning device of two pin receptacle, can eliminate the electric current of electrical appliance induction, and when electrical appliance metallic plate or body leakage over insurance silk load, can be by buzzer 9 sound that gives a warning, in time allow the user learn electrical appliance seriously electric leakage, be convenient to take suitable remedial measure, therefore can effectively prevent the injury in addition that the electrical appliance electric leakage causes.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1, a kind of three jacks change the electric leakage warning device of two pin receptacle, comprise circuit board; It is characterized in that described circuit board is provided with a tripod jack, diode, fuse, two second hole pins, two resistors, two capacitors, buzzer, inspection and shows lamp and one first pin jack and crus secunda jack; One three jack fore shell, its antetheca are provided with the through hole of the corresponding first pin jack, crus secunda jack and tripod jack; One two pin back cover is provided with two through holes and the corresponding second hole pin; The described second hole pin, one of them is the power ground pin, another is the power firestreak pin; The power ground pin of described diode, fuse, two second hole pins and tripod jack form ground connection, the combination of one of one of diode and two capacitors and two resistors, and form the power supply that gives a warning for buzzer.
2, change the electric leakage warning device of two pin receptacle according to described three jacks of claim 1, it is characterized in that, the lamp combination is shown in described another resistor and inspection, shows live wire, the ground wire of power supply with inspection.
3, change the electric leakage warning device of two pin receptacle according to described three jacks of claim 1, it is characterized in that, described inspection shows that lamp is the neon lamp.
4, change the electric leakage warning device of two pin receptacle according to described three jacks of claim 1, it is characterized in that, the described second hole pin is that power line connects a plug formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025427 CN2909656Y (en) | 2006-02-28 | 2006-02-28 | Leakage alarm device of three-pin plug-in two-pin socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025427 CN2909656Y (en) | 2006-02-28 | 2006-02-28 | Leakage alarm device of three-pin plug-in two-pin socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909656Y true CN2909656Y (en) | 2007-06-06 |
Family
ID=38128866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025427 Expired - Fee Related CN2909656Y (en) | 2006-02-28 | 2006-02-28 | Leakage alarm device of three-pin plug-in two-pin socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2909656Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103378504A (en) * | 2012-04-24 | 2013-10-30 | 亚旭电子科技(江苏)有限公司 | Power supply expansion structure with socket and plug and power supply expansion device |
| CN108834310A (en) * | 2018-07-28 | 2018-11-16 | 贵州航天天马机电科技有限公司 | A kind of metal shell insulation indicating circuit plate |
-
2006
- 2006-02-28 CN CN 200620025427 patent/CN2909656Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103378504A (en) * | 2012-04-24 | 2013-10-30 | 亚旭电子科技(江苏)有限公司 | Power supply expansion structure with socket and plug and power supply expansion device |
| CN103378504B (en) * | 2012-04-24 | 2015-06-17 | 亚旭电子科技(江苏)有限公司 | Power supply expansion structure with socket and plug and power supply expansion device |
| CN108834310A (en) * | 2018-07-28 | 2018-11-16 | 贵州航天天马机电科技有限公司 | A kind of metal shell insulation indicating circuit plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |