CN202975234U

CN202975234U - Power socket detector

Info

Publication number: CN202975234U
Application number: CN 201220432072
Authority: CN
Inventors: 郭胜利; 刘忠道; 吉学庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-06-05
Anticipated expiration: 2022-08-29

Abstract

A power socket detector disclosed by the utility model is provided with a live line terminal L, a neutral line terminal N and a ground line terminal G on a detecting plug. The live line terminal L end is connected with an L-end induction voltage detection circuit which is composed of a touch metal member H2, a resistor R2 and a neon tube S2. The neutral line terminal N end is connected with an N-end induction voltage detection circuit which is composed of a touch metal member H1, a resistor R4 and a neon tube S1. The neutral line end N is connected with the ground line terminal G through a voltage detection circuit which is composed of a resistor R1, a diode D1 and a red light emitting diode LED1. The live line terminal L is connected with the ground line terminal G through a voltage detection circuit which is composed of a resistor R2, a diode D2 and a green light emitting diode LED2. The neutral line terminal N is connected with the live line terminal LG through a voltage detection circuit which is composed of a resistor R3, a diode D3 and a blue light emitting diode LED3. Whether the wiring of the power socket is correct can be detected visually and correctly.

Description

The supply socket detecting device

Affiliated technical field

The utility model belongs to electron electric power testing tool technical field, and what mainly relate to is a kind of supply socket detecting device.

Background technology

Mentioning supply socket, is well-known, widely known.As a kind of instrument (product) that AC power is provided to electrical equipment, its purposes is very large, and the use field is very wide, and every place that has alternating current to use just has supply socket.For the correctly use supply socket of safety, national departments concerned has proposed clear and definite standard mode of connection to correct use socket.Yet in real productive life, whether a lot of people a lot of families have little understanding to the method for exact connect ion, correctly also unclear to the socket in using, as long as think that it is exactly correct having electric energy to use.Factory, enterprise, unit generally make mistakes less; because the electrotechnics personnel's of specialty detection is arranged, but for the supply socket that family uses, investigate according to relevant department; domestic consumer's supply socket of 85% is connected with problem, and the overwhelming majority does not connect the protection ground wire.Also has the Live line Zero line cross connection; this is all wrong; the protection ground wire is to prevent the consumer electric leakage and a kind of important measure of protection; especially to the washing machine in family, the shower heater of the use of having a bath, micro-wave oven; and the household electrical appliance such as televisor, computer are all very important security means, and it can be eliminated electrostatic interference and make more steady operation of household electrical appliances.It can prevent the danger of getting an electric shock.So correct wiring is the primary condition of safe handling supply socket.At present, much buy the family that the house carries out electric finishing, generalized case is not know the supply socket after finishing is carried out an acceptance inspection or unclear how the detection, and most of families think that it is exactly qualified plugging that electrical equipment can work.The user who understands some electrician's knowledge who has wants to detect examination, but lacks a kind of simple suitable tool using.Can only understand live wire with electroprobe whether electricity and position are arranged.The instrument and meter of employing specialty generally is difficult to realize.Cause many families not know or do not know whether the connection of the supply socket of using is correct.

Summary of the invention

The purpose of this utility model is to propose a kind of supply socket detecting device, can intuitive and accurately detect the wiring correctness of supply socket, and show with the coloured light form.Have characteristics easy and simple to handle, multiple functional, safe and reliable.

The utility model realizes that the technical scheme that above-mentioned purpose is taked is: a kind of supply socket detecting device is in test plug, fire line terminal L, zero terminal N and ground wire terminal G to be set, these three terminals are corresponding with firewire jack L, zero line jack N and ground wire jack G jack on Three-hole socket, are connected with the L end induced voltage testing circuit that is comprised of touch metallic object, resistance, neon bulb at fire line terminal L end; Be connected with the N end induced voltage testing circuit that is formed by touch metallic object, resistance, neon bulb at zero terminal N end; Be connected with by resistance diode, the voltage detecting circuit that red luminotron forms between zero terminal N and ground wire terminal G; Be connected with by resistance diode, the voltage detecting circuit that green luminotron forms between fire line terminal L and ground wire terminal G; Be connected with by resistance diode, the voltage detecting circuit that the blue-light-emitting pipe forms between zero terminal N and fire line terminal LG.

The utility model is simple in structure, and is easy and simple to handle, multiple functional, and anyone can use, and only need be inserted in socket, just can intuitive and accurately detect the correctness of supply socket wiring.Filled up domestic blank.

Description of drawings

Fig. 1 isStructure principle chart of the present utility model.

Fig. 2 is the structural representation of existing Three-hole socket.

In figure: L, fire line terminal, N, zero terminal, G, ground wire terminal.

Embodiment

By reference to the accompanying drawings, provide embodiment of the present utility model as follows:

As Fig. 1 in conjunction with shown in Figure 2: the described supply socket detecting device of the present embodiment comprises test plug and three metal terminals fixed thereon, be respectively fire line terminal L, zero terminal N and ground wire terminal G, these three metal terminals are corresponding with firewire jack L, zero line jack N and ground wire jack G on Three-hole socket.

Ground wire terminal G be positioned at test socket directly over.Effect is to play fine protection effect; when if leaky occurs in consumer; ground wire can prevent that people from electric shock accidents occuring; on the other hand; to some electrical equipment accurately; such as computer, televisor, micro-wave oven, automatic washing machine, water heater etc. can play fine electrostatic-proof function, eliminate and disturb, make electrical work more stable.Zero terminal N is positioned at the left side side of test socket, connects the zero line of AC power.Fire line terminal L is positioned at the right side side of test socket, connects the live wire of AC power.

Be connected with the L end induced voltage testing circuit that is formed by touch metallic object H2, resistance R 5, neon bulb S2 at fire line terminal L end; Be connected with the N end induced voltage testing circuit that is formed by touch metallic object H1, resistance R 4, neon bulb S1 at zero terminal N end; Be connected with by resistance R 1 diode D1, the voltage detecting circuit that red luminotron LED1 forms between zero terminal N and ground wire terminal G; Be connected with by resistance R 2 diode D2, the voltage detecting circuit that green luminotron LED2 forms between fire line terminal L and ground wire terminal G; Be connected with by resistance R 3 diode D3, the voltage detecting circuit that blue-light-emitting pipe LED3 forms between zero terminal N and fire line terminal LG.

Under standard correct wiring condition:

1. there is no voltage between N and G, N is zero line, and G is ground wire, and the LED1 red luminotron does not work.

2. have the alternating voltage of nearly 220 ⅴ between G and L, this voltage is through the step-down of R2 resistance current limliting, and through D2 diode half-wave rectification, the LED2 green emitting is in control operating voltage and is luminous.

3. be two lines of alternating current normal supply between N and L, exist the alternating voltage of 220 ⅴ, this voltage by the D3 diode rectification, makes the LED3 blue-light-emitting be in control operating voltage and luminous through the step-down of R3 resistance current limliting.

4. under correct wiring, human body touch is during to H1, and S1 can be not luminous, is on zero line because S1 is connected to N, there is no induced voltage, and S1 does not work naturally.

5. under correct wiring, human body touch is during to H2, and the rubescent chromatic flicker light of S2 because S2 is connected on the L live wire, has produced induced voltage, and S2 is inevitable bright.

Thus, the conclusion that obtains is: under the correct wiring condition, red luminotron LED1 does not work.Green luminotron LED2, blue-light-emitting pipe LED3 are simultaneously bright.During human body touch H1, S1 does not work, and during human body touch H2, the S2 flicker is bright.

During lower surface analysis wiring error, each luminotron shows result:

1.G ground wire broken string or when not connecing:

LED1, LED2 can not get operating voltage can be not bright.But during human body touch H2, S2 can be shinny, only has LED3 blue-light-emitting Guan Changliang.Testing result when this is G ground wire broken string or unearthed line.What deserves to be explained is that this situation is the most general; because generally not affecting electrical equipment uses; in most families, the earth-free line of Three-hole socket is a lot; this phenomenon should be paid attention to especially; earth-free line; electrical equipment can not get effective protection; in case leak electricity; be easy to cause user of service's electric shock accidents; especially the electrical equipment that the human bodies such as washing machine, shower heater is directly contacted is even more important, and ground wire has been arranged, and leaks electricity exactly; can well be protected (electric energy forms the loop by the earth, can not damage human body).

2.N neutral line break or when not connecing:

It is not luminous that LED1, LED3 can not get operating voltage, and LED2 obtains the voltage power supply glow green between G and L.When human body touch H1 and H2, only have S2 luminous, this demonstration result proves the N neutral line break or zero line does not connect.Generally seldom have, because electrical equipment can not be worked, people easily realize.

3.L live wire broken string or when not connecing:

This phenomenon is rare, because there is no alternating current fire wire, LED1, LED2, LED3 and S1, S2 can not be bright.So when entirely not working, illustrate that the L live wire breaks or the L live wire does not connect.

4.N zero line---during-L live wire transposition:

At this moment LED1, LED3 red luminotron and blue-light-emitting Guan Liang, human body touch H1, during H2, S1 is luminous.This situation is very general, and supply socket fire zero is staggered and does not affect use, is difficult for realizing, but this wiring is unsafe, because electrical equipment is when producing, is that zero line carries out standard to the processing of power supply according to the left side, such as electric switch, electric current major loop protective tubes etc. are all through live wire, and after N-L dislocation, live wire can not get corresponding processing, be easy to electric leakage, people touch the sensation that electric appliance casing has the fiber crops electricity sometimes, are exactly that this wiring causes, and should note.Simultaneously, our effect that S1 is set is exactly to judge the position of live wire institute Adopts measure.

5.G when ground wire and the mutual wrong position of L live wire:

This moment LED1, LED2 is simultaneously bright, LED3 goes out.Human body touch H1, during H2, S1, S2 are not luminous.This phenomenon is easily realized, because electrical equipment can not use.

6. if three LED1 occur, LED2, LED3 is complete when bright.

During G and L intervening portion and G broken string or N is when breaking with L intervening portion and N.But this phenomenon is seldom rarely found.Here only perform an analysis and illustrate.

Claims

1. supply socket detecting device, it is characterized in that: be provided with fire line terminal L, zero terminal N and ground wire terminal G in test plug, these three terminals are corresponding with firewire jack L, zero line jack N and ground wire jack G jack on Three-hole socket, are connected with the L end induced voltage testing circuit that is comprised of touch metallic object H2, resistance R 5, neon bulb S2 at fire line terminal L end; Be connected with the N end induced voltage testing circuit that is formed by touch metallic object H1, resistance R 4, neon bulb S1 at zero terminal N end; Be connected with by resistance R 1 diode D1, the voltage detecting circuit that red luminotron LED1 forms between zero terminal N and ground wire terminal G; Be connected with by resistance R 2 diode D2, the voltage detecting circuit that green luminotron LED2 forms between fire line terminal L and ground wire terminal G; Be connected with by resistance R 3 diode D3, the voltage detecting circuit that blue-light-emitting pipe LED3 forms between zero terminal N and fire line terminal LG.