CN204858162U - Wiring board with lightning protection device - Google Patents
Wiring board with lightning protection device Download PDFInfo
- Publication number
- CN204858162U CN204858162U CN201520578569.6U CN201520578569U CN204858162U CN 204858162 U CN204858162 U CN 204858162U CN 201520578569 U CN201520578569 U CN 201520578569U CN 204858162 U CN204858162 U CN 204858162U
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- China
- Prior art keywords
- lightning protection
- wiring board
- gas discharge
- discharge tube
- detecting unit
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- 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.)
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Abstract
The utility model discloses a wiring board with lightning protection device, the problem of the user can forget and open the lightning protection function on the wiring board is solved, its technical scheme main points are including the wiring board circuit, be equipped with first lightning protection circuit on the wiring board circuit, first lightning protection circuit includes a gas discharge tube, first lightning protection circuit includes a detecting element and the 2nd detecting element, a detecting element is coupled and is used for the real -time detection overvoltage in the live wire, export first detected signal, the 2nd detecting element is coupled and is used for the real -time detection overvoltage on the zero line, output second detected signal, a detecting element and the 2nd detecting element all are coupled in a gas discharge tube, a gas discharge tube opens and close with the realization in response to first detected signal or second detected signal, the utility model discloses a wiring board with lightning protection device carries out real -time detection to live wire, zero line through a detecting element, the 2nd detecting element, avoids forgetting that it appears to open and result in the circumstances that electrical apparatus damaged with the lightning protection function.
Description
Technical field
The utility model relates to a kind of wiring board, and more particularly, it relates to a kind of wiring board with lightning protection device.
Background technology
Socket; also known as supply socket; combined socket and switch; comprise some international general-purpose holes and a plug; various wiring can be inserted by it; be convenient to and other circuit ON; for multiple power consumption equipment is powered, in order to meet protection requirements, general socket is also provided with leakage protection circuit; for the power supply of the disconnecting plug end of incoming cables when there is leakage current; to play the protective effect to power consumption equipment, most wiring board does not have the function of lightning protection simultaneously, and the Special lightning protection patch board on market is complicated; expensive, ordinary people requirement can not be met.
In order to overcome above-mentioned shortcoming, a kind of wiring board of built-in electrode surge arrester lightning protection device disclosed in application number 201510168436.6, it mainly comprises wiring board shell, wiring board circuit, in described wiring board circuit, electrode surge arrester lightning protection device is installed, because of when in lightning induction or other reason circuit, voltage reaches electrode surge arrester threshold values, electrode surge arrester conducting, electric current is discharged into ground wire, thus reaches the object of lightning protection.Further, described electrode surge arrester has three pins, a pin connects live wire, a pin connects zero line, another one pin connects ground wire, and no matter overvoltage electric current introduces from zero line, or introduce from live wire, electrode surge arrester can be discharged into ground wire, thus reaches the object of lightning protection.
Can know by its accompanying drawing; this lightning protection device realizes opening and closing by switch; due to general lightning protection device with less than; so this function is often closed by switch by user; because the weather that thunders is that occasional occurs, thus cause user often can forget switch opens when thundering weather, then cannot reach the effect of lightning protection; thus also can cause damage to electrical equipment, so current the used wiring board with lightning protection device has certain room for improvement.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of wiring board with lightning protection device, and can realize detecting in real time.
For achieving the above object, the utility model provides following technical scheme: a kind of wiring board with lightning protection device, comprise wiring board circuit, described wiring board circuit is provided with the first lightning protection circuit, described first lightning protection circuit comprises the first gas discharge tube, described first lightning protection circuit comprises the first detecting unit and the second detecting unit, described first detecting unit is coupled to live wire for being detected voltage in real time, and export the first detection signal, described second detecting unit is coupled on zero line for being detected voltage in real time, and export the second detection signal, described first detecting unit and the second detecting unit are all coupled to the first gas discharge tube, described first gas discharge tube in response to the first detection signal or the second detection signal to realize opening and closing.
Preferably, described first detecting unit and the second detecting unit are piezo-resistance.
Preferably, described first gas discharge tube is two pole discharge tubes.
Preferably, also comprise the second lightning protection circuit, described second lightning protection circuit is coupled between the first lightning protection circuit and load.
Preferably, described second lightning protection circuit comprises the second gas discharge tube, the second coil, the 3rd gas discharge tube and tertiary coil, described second gas discharge tube is series on live wire, described second coils from parallel connection of coils is in the second gas discharge tube, described 3rd gas discharge tube is series on zero line, and described tertiary coil is parallel to the 3rd gas discharge tube.
The utility model hinge structure is compared to be had: detected in real time live wire, zero line by the first detecting unit, the second detecting unit, avoids forgetting that the situation causing electrical equipment to damage lightning protection function unlatching occurs.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit theory diagrams of circuit of the present utility model.
In figure: 1, housing; 2, the first USB interface; 3, secondary USB interface; 4, testing button; 5, reset button; 6, power supply indicator; 400, wiring board circuit; 410, the first lightning protection circuit; 411, the first detecting unit; 412 second detecting units; 420, the second lightning protection circuit; 430, detection control circuit; 440, indicating circuit; .
Embodiment
Shown in Fig. 2, embodiment is described further.
A kind of wiring board with lightning protection device disclosed in the utility model, comprise housing 1 and wiring board circuit 400, housing 1 includes the first USB interface 2 and secondary USB interface 3, charging current corresponding to two USB interface is different, the corresponding charging current of the first USB interface 2 is 2.5A, to make can be charged to equipment such as mobile phones fast by the first USB interface 2, and the corresponding charging current of secondary USB interface 3 is 1.2A, so that ordinary appliances can charge normal, two different USB interface are to be applicable to different environment and state, leave if worry, then quick charge can be adopted, leave if be not eager, then can adopt common charging modes, housing is still provided with testing button 4 and reset button 5 simultaneously, by testing button to realize whether having drain conditions to wiring board, if no problem, then directly press reset button 5 can realize resetting, thus wiring board can normally be used, housing is also provided with power supply indicator 6 and first indicator light corresponding with the first USB interface 2, second indicator light corresponding with secondary USB interface 3, by the setting of above-mentioned indicator light so that display working condition, be convenient to the state that user understands charging.
Wiring board circuit 400 is provided with the first lightning protection circuit 410, first lightning protection circuit 410 comprises the first gas discharge tube GDT1, first lightning protection circuit 410 comprises the first detecting unit 411 and the first detecting unit 412, first detecting unit 411 is piezo-resistance RV1, and the first detecting unit 412 is piezo-resistance RV2.
The operation principle of piezo-resistance is as follows: when being added in the threshold value of the voltage in piezo-resistance lower than it, the electric current flowing through it is minimum, and it is equivalent to the infinitely-great resistance of resistance.That is, when being added in the voltage above it lower than its threshold value, it is equivalent to the switch of an off-state; When being added in the voltage in piezo-resistance and exceeding its threshold value, the electric current flowing through it increases sharply, and it is equivalent to the infinitesimal resistance of resistance.That is, when being added in the voltage above it higher than its threshold value, it is equivalent to the switch of a closure state.
First detecting unit 411 is coupled to live wire for being detected voltage in real time, and export the first detection signal, first detecting unit 412 is coupled on zero line for being detected voltage in real time, and export the second detection signal, first detecting unit 411 and the first detecting unit 412 are all coupled to the first gas discharge tube GDT1, first gas discharge tube GDT1 in response to the first detection signal or the second detection signal to realize opening and closing, first gas discharge tube GDT1 is two pole discharge tubes, one end of two pole discharge tubes and piezo-resistance RV1, piezo-resistance RV2 connects, other end ground connection, by the first detecting unit 411, first detecting unit 412 pairs live wire, zero line detects in real time, avoid forgetting that the situation causing electrical equipment to damage lightning protection function unlatching occurs.
The operation principle of gas discharge tube is gas discharge, when applied voltage increases above the dielectric strength of gas, the gap of two interpolars is by discharge breakdown, be converted into conduction state by original state of insulation, the voltage after conducting between discharge tube the two poles of the earth maintains the residual voltage level of putting electric arc channel and determining.
By the effect of piezo-resistance RV1 and piezo-resistance RV2, to being struck by lightning, the high voltage produced detects, by piezo-resistance RV1, live wire is detected, and piezo-resistance RV2 detects zero line, if the resistance of piezo-resistance RV1 diminishes, then high voltage live wire existing and is struck by lightning and causes is described; If the resistance of piezo-resistance RV2 diminishes, then high voltage zero line existing and is struck by lightning and causes is described; If the resistance of the resistance of piezo-resistance RV1 and piezo-resistance RV2 all diminishes, then high voltage zero line, live wire all existing and is struck by lightning and causes is described; No matter in which kind of situation above-mentioned, all the electric current of the surge brought of being struck by lightning is flowed into the first gas discharge tube GDT1 and carry out earial drainage.
Wiring board circuit 400 also comprises the second lightning protection circuit 420, second lightning protection circuit 420 is coupled between the first lightning protection circuit 410 and load, second lightning protection circuit 420 comprises the second gas discharge tube GDT2, the second coil L2, the 3rd gas discharge tube GDT3 and tertiary coil L3, second gas discharge tube GDT2 is series on live wire, second coil L2 is parallel to the second gas discharge tube GDT2,3rd gas discharge tube GDT3 is series on zero line, and tertiary coil L3 is parallel to the 3rd gas discharge tube GDT3.
Because the electric current of the surge brought of being struck by lightning is very large, and can there is the risk increased sharply electric current cannot let out completely in the first lightning protection circuit 410, so arranging a second lightning protection electric current, do not produced infringement by having let out to electrical equipment to prevent the electric current increased sharply.
Detection control circuit 430 is provided with between first lightning protection circuit 410 and load, detection control circuit 430 is piezo-resistance RV3, one end of detection control circuit 430 is coupled to live wire, the other end is coupled to zero line, detecting unit is used for being detected voltage in real time, and in response to overvoltage with by wiring board circuit 400 short circuit, when the first lightning protection circuit 410 damages due to fault, then earial drainage is not carried out to the electric current increased sharply, thus detect by piezo-resistance RV3 the high voltage that thunderbolt produces, the resistance of piezo-resistance RV3 is diminished, electric current directly flows into zero line from live wire through piezo-resistance RV3, thus by the short circuit of whole wiring board circuit 400, avoid causing damage to the load of access wiring board, and when the first lightning protection circuit 410 can normally work, then detection control circuit 430 does not work.
Indicating circuit 440 is provided with between first lightning protection circuit 410 and detection control circuit 430; indicating circuit 440 comprises protective resistance and indicator light; be coupled between live wire and zero line after protective resistance R9 and indicator light LED strip join; when the first lightning protection circuit 410 normally works; then indicator light LED can normally light; if when the first lightning protection circuit 410 damages, then detection control circuit 430 works and by this wiring board circuit 400 short circuit, and indicator light LED extinguishes simultaneously.
First lightning protection circuit 410, indicating circuit 440, detection control circuit 430 and the second lightning protection circuit 420 are coupled between live wire and zero line successively.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. the wiring board with lightning protection device, comprise wiring board circuit, described wiring board circuit is provided with the first lightning protection circuit, described first lightning protection circuit comprises the first gas discharge tube, it is characterized in that: described first lightning protection circuit comprises the first detecting unit and the second detecting unit, described first detecting unit is coupled to live wire for being detected voltage in real time, and export the first detection signal, described second detecting unit is coupled on zero line for being detected voltage in real time, and export the second detection signal, described first detecting unit and the second detecting unit are all coupled to the first gas discharge tube, described first gas discharge tube in response to the first detection signal or the second detection signal to realize opening and closing.
2. a kind of wiring board with lightning protection device according to claim 1, is characterized in that: described first detecting unit and the second detecting unit are piezo-resistance.
3. a kind of wiring board with lightning protection device according to claim 2, is characterized in that: described first gas discharge tube is two pole discharge tubes.
4. a kind of wiring board with lightning protection device according to claim 1, is characterized in that: also comprise the second lightning protection circuit, and described second lightning protection circuit is coupled between the first lightning protection circuit and load.
5. a kind of wiring board with lightning protection device according to claim 4, it is characterized in that: described second lightning protection circuit comprises the second gas discharge tube, the second coil, the 3rd gas discharge tube and tertiary coil, described second gas discharge tube is series on live wire, described second coils from parallel connection of coils is in the second gas discharge tube, described 3rd gas discharge tube is series on zero line, and described tertiary coil is parallel to the 3rd gas discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578569.6U CN204858162U (en) | 2015-08-04 | 2015-08-04 | Wiring board with lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578569.6U CN204858162U (en) | 2015-08-04 | 2015-08-04 | Wiring board with lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204858162U true CN204858162U (en) | 2015-12-09 |
Family
ID=54748681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520578569.6U Expired - Fee Related CN204858162U (en) | 2015-08-04 | 2015-08-04 | Wiring board with lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204858162U (en) |
-
2015
- 2015-08-04 CN CN201520578569.6U patent/CN204858162U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |