CN2469581Y - Multifunction autodistinguishing shockproof safety jack - Google Patents
Multifunction autodistinguishing shockproof safety jack Download PDFInfo
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- CN2469581Y CN2469581Y CN 01212807 CN01212807U CN2469581Y CN 2469581 Y CN2469581 Y CN 2469581Y CN 01212807 CN01212807 CN 01212807 CN 01212807 U CN01212807 U CN 01212807U CN 2469581 Y CN2469581 Y CN 2469581Y
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- electric shock
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Abstract
The utility model relates to a multifunction autodistinguishing shockproof safety jack which is a series loop formed by an intelligent measuring circuit, a pulse charging circuit, a drive circuit, an output socket and a continuous power supply circuit; wherein, a short protective control circuit is also connected in series between the intelligent measuring circuit and the drive circuit. Before the utility model is used by an electrical appliance, the contact sheet of a socket is without electricity. When people touch the contact sheet unconsciously or touch the two contact sheets at the same time, an electric shock can be avoided. As long as the utility model is inserted into the power supply plug of the electrical appliance, the electric source can be provided for the electrical appliance. When the electrical appliance has creepage, the utility model can automatically cut off the power supply; and when the electrical appliance is in short circuit, the utility model disenables the supply of power for the electrical appliance.
Description
The utility model relates to a kind of multi-functional automatic identification protection against electric shock safety socket.
Along with popularizing of household electrical appliances, the use of supply socket is more extensive.Electric shock accidents takes place in family life nearly all cause, so some people carried out various transformations to socket, Ru Jiamen, added a cover etc., but made attaching plug be difficult to insert, made troubles to use by socket.
It is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, the multi-functional automatic identification protection against electric shock safety socket that can cut off the electricity supply automatically under the situation of electrical leakage or people's electric shock.
The purpose of this utility model is achieved through the following technical solutions: it is made up of socket, it is characterized in that: it also is made up of Intelligent Measurement circuit, short control circuit, continued power circuit, drive circuit and the pulse current charge circuit protected, be connected to form series loop by Intelligent Measurement circuit, pulse current charge circuit, drive circuit, accessory power outlet and continued power circuit, also be in series with the short control circuit of protecting between Intelligent Measurement circuit and drive circuit, power series is between pulse current charge circuit, drive circuit and accessory power outlet.
The utility model just adds some electronic devices and components in original socket.When not using electrical appliance, the contact chip of socket is not charged, runs into contact chip unintentionally the people, or runs into two contact chips simultaneously and can not get an electric shock yet.Only at the attaching plug that inserts electrical appliance and when using, its can provide power supply for electrical appliance.After the attaching plug of pulling out electrical appliance or powered-down switch, or when electrical appliance leaked electricity, it can be cut off the electricity supply automatically, made the people exempt from electric shock.When the electrical appliance short circuit, it can forbid providing power supply to electrical appliance.The utlity model has characteristics simple in structure, that cost is low, safe and reliable, is desirable safety socket.
Fig. 1 is a basic circuit block diagram of the present utility model.
Fig. 2 is a basic circuit schematic diagram of the present utility model.
Fig. 3 is a kind of preferred embodiments circuit diagram of the present utility model.
In order to make the utility model structure clear more complete, the utility model is described further below in conjunction with accompanying drawing.
As shown in Figure 1: the utility model is to add Intelligent Measurement circuit, short control circuit, continued power circuit, drive circuit and the pulse current charge circuit composition protected in original socket, be connected to form series loop by Intelligent Measurement circuit, pulse current charge circuit, drive circuit, accessory power outlet and continued power circuit, also be in series with the short control circuit of protecting between Intelligent Measurement circuit and drive circuit, power series is between pulse current charge circuit, drive circuit and accessory power outlet.As shown in Figure 2: the Intelligent Measurement circuit is, the normally closed point of resistance R 6, R5 and relay is serially connected between the phase line output terminal [18] of power supply ground [24] and socket, heavy-duty diode D3 and D4 forward series connection back and D5 reverse parallel connection, the anode of D3 is connected on the input (being Vcc) [21] of zero line, the negative electrode of D4 is connected on the zero line output [19] of socket, resistance R 4 is connected across on the base stage [26] of phototriode of the contact of R5 and R6 and photoelectrical coupler U2, becomes the Intelligent Measurement control end of this circuit.The continued power circuit is that the light-emitting diodes tube cathode [22] of photoelectrical coupler U2 links with R3, the light-emitting diodes tube anode [21] of photoelectrical coupler U2, the negative electrode of D5 and anode and the Vcc of D3 link, the zero line output [19] of the negative electrode of the other end of R3, the anode of D5 and D4 and socket links, and becomes the control end of this circuit continued power function.The anode that short protection control circuit is voltage stabilizing didoe ZD2 links to each other with the base stage of switch triode 01, and the ZD2 negative electrode links to each other with the contact of R5 and R6, and the collector and emitter of Q1 is connected on respectively on B point and power supply ground [24], constitutes the short control end of protecting of this circuit.Drive circuit is composed in series by U4, R10, Q2, JR1.The pulse current charge circuit is that switching diode D6, resistance R 8 and R9 are serially connected between the output [2] and power supply ground [24] of U3, and electrolytic capacitor C4 is in parallel with resistance R 9, and the contact of R8 and R9 is connected on the B point, has constituted pulse charge and discharge circuit.
The phase line of alternating current 220V voltage is through nonpolarity thin-film capacitor C1 step-down, diode D1 and D2 rectification, electrolytic capacitor C2 filtering, and after voltage stabilizing didoe ZD1 and the integrated regulator U1 voltage stabilizing, use on output 12V and 5V DC-voltage supply road.With C1 parallel resistor R1 for discharge usefulness, be connected the contact of rectifier diode D1 and D2 and the resistance R 2 between the capacitor C 1 and be used for limit inrush currents.
After inserting electrical appliance, because of the internal resistance of electrical appliance less, Vcc (+5V) voltage is through heavy-duty diode D3, D4, the zero line contact chip [19] of socket, electrical appliance, phase line contact chip [18], the common port of relay J R1 [16], normal-closed end [15], resistance R 5 and R6 dividing potential drop raise A is ordered in the circuit current potential and greater than 0.6V, this voltage through being connected across resistance R 5 and R6 contact and the resistance R 4 between the base stage [26] of the phototriode of photoelectrical coupler U2, make the phototriode conducting of photoelectrical coupler U2, the emitter of phototriode [24] is connected on power supply ground, collector electrode [25] is connected on not gate U3 input [1], so U3 input low level and overturning, output [2] output high level, switching diode D6 conducting, B point current potential raises and greater than the positive threshold values V of not gate U4 input [3] in the circuit
T+The input of not gate U4 [3] is the high level upset, output [4] output low level, because of the base stage of triode Q2 is connected on the output [4] of U4 through resistance R 10, the emitter of triode Q2 be connected on Vcc (+5V), triode Q2 conducting, one of relay J R1 coil terminates at triode Q2 collector electrode, the other end is connected on-the 12V power supply on, relay J R1 adhesive.The alternating current 220V phase voltage through fuse FUSE1, be connected on the Chang Kaiduan point [17] of relay J 1, offer electrical appliance through public point [16] again, electrical appliance is started working.Meanwhile heavy-duty diode D3, D4 and D5 produce AC voltage drop in the loop.Be connected on the negative electrode of D4 through resistance R 3 because of the negative electrode [22] of the light-emitting diode of photoelectrical coupler U2, the anode of light-emitting diode [21] is connected on the anode of D3, make the LED flash of U2, the periodically conducting or end U3 output [2] output square-wave pulse of the phototriode of photoelectrical coupler U2.
In pulse charge and discharge circuit, because of the existence of switching diode D6 is arranged, have only direct impulse to charge rapidly, when switching diode D6 ends through 8 couples of electrochemical capacitor C4 of resistance R, electrochemical capacitor C4 discharges lentamente through resistance R 9, makes current potential that B orders all the time greater than the negative threshold values V of not gate U4 input [3]
T-, not gate U4 output [4] keeps low level, and triode Q2 continues conducting, and relay J R1 continues adhesive, electrical appliance continuous firing.
Pull out the electrical appliance attaching plug or close the electrical appliance mains switch, the current potential that A is ordered in the circuit descends, the phototriode of photoelectrical coupler U2 ends, the input of not gate U3 [1] is clamped on high potential by resistance R 7, output [2] output low level, diode D6 ends, and electrochemical capacitor C4 slowly discharges through resistance R 9, through after some times, the current potential that B is ordered drops to the negative threshold values V of not gate U4 input [3]
T-, not gate U4 circuit overturns, output [4] output high level, and triode Q2 ends, and relay J R1 discharges, phase line contact chip [18] outage of socket.
When the electrical appliance short circuit, Vcc (+5V) voltage is through R5 and R6 dividing potential drop, the potential rise that A is ordered gets higher, voltage stabilizing didoe ZD2 is breakdown, switch triode Q1 conducting simultaneously, and the emitter of Q1 is connected on power supply ground [24], collector electrode is connected on the B point, even the phototriode conducting of photoelectrical coupler U2, not gate U3 overturns, and the B point still is a low level.So the output [4] of not gate U4 keeps high level constant, triode Q2 still ends, and relay J R1 does not have adhesive, and the phase line contact chip [18] of socket is not charged.
When staff is run in the socket two contact chips, because of the cuticula resistance higher (being generally tens of kilohms) of the skin of staff ,+5V voltage is through it and dividing potential drops such as resistance R 5 and R6, the small rising of the current potential that A is ordered in the circuit, the phototriode of photoelectrical coupler U2 still ends, not gate U3 output [2] output low level, B point still are low level, and not gate U4 output high level is constant, triode Q2 ends, relay J R1 does not have adhesive, and the phase line contact chip [18] of socket is not charged, makes the people exempt to get an electric shock.
As shown in Figure 3, the phase line of alternating current 220V voltage is through nonpolarity thin-film capacitor C1 step-down, diode D1 and D2 rectification, electrolytic capacitor C2 filtering, and after voltage stabilizing didoe ZD1 and the integrated regulator U1 voltage stabilizing, use on output 12V and 5V DC-voltage supply road.With C1 parallel resistor R1 for discharge usefulness, be connected the contact of rectifier diode D1 and D2 and the resistance R 2 between the capacitor C 1 and be used for limit inrush currents.
After inserting electrical appliance, because of the internal resistance of electrical appliance less, Vcc (+5V) voltage is through heavy-duty diode D3, D4, the zero line contact chip [19] of socket, electrical appliance, phase line contact chip [18], the common port of relay J R1 [16], normal-closed end [15], resistance R 5 and R6 dividing potential drop raise A is ordered in the circuit current potential and greater than 0.6V, this voltage through being connected across resistance R 5 and R6 contact and the resistance R 4 between the base stage [26] of the phototriode of photoelectrical coupler U2, make the phototriode conducting of photoelectrical coupler U2, the emitter of phototriode U2 [24] is connected on power supply ground, collector electrode [25] is connected on two input NAND gate U3 input [1] and [2], so U3 input low level and overturning, output [3] output high level, switching diode D6 conducting, R point current potential raises and greater than the positive threshold values V of two input NAND gate U4 inputs [5] in the circuit
T+Two input NAND gate U5 and U6 constitute basic R-S trigger in the circuit, and they play the state latch effect in circuit.The input [13] of supposing U5 is the reset terminal R of R-S trigger, the output of U5 [11] links to each other as the Q-output of R-S trigger with the input [9] of U6, the input of U6 [8] is the set end S of R-S trigger, and the output of U6 [10] links to each other as the Q+ output of R-S trigger with the input [12] of U5.Under normal circumstances, when not using electrical appliance after the socket energising, the S end of R-S trigger is high level, the R end is low level, and then R-S trigger is in " 0 " state, and its output Q+ is a low level, Q-is a high level, and promptly the input [6] of two input NAND gate U4 remains high level.When using electrical appliance, the current potential that R is ordered in the circuit raises, the input [5] of two input NAND gate U4 links to each other with the R point, two inputs [5] of two input NAND gate U4 and [6] are the high level upset, output [4] output low level, because of the base stage of triode Q2 is connected on the output [4] of U4 through resistance R 10, the emitter of triode Q2 be connected on Vcc (+5V), triode Q2 conducting, triode Q2 collector electrode is connected on an end of relay J R1 coil, the coil other end is connected on-the 12V power supply on, relay J R1 adhesive.The alternating current 220V phase voltage is connected on normal battle [17] of relay J 1 through fuse FUSE1, offers electrical appliance through common point [16] again, and electrical appliance is started working.Meanwhile heavy-duty diode D3, D4 and D5 produce AC voltage drop in the loop.Be connected on the negative electrode of D4 through resistance R 3 because of the negative electrode [22] of the light-emitting diode of photoelectrical coupler U2, the anode of light-emitting diode [21] is connected on the anode of D3, make the luminous tube flicker of U2, the periodically conducting or end U3 output [2] output square-wave pulse of the photosensitive tube of photoelectrical coupler U2.
Switching diode D6, resistance R 8 and R9 are serially connected between the output [3] and ground of U3 in circuit, and electrochemical capacitor C4 is in parallel with resistance R 9, and the contact of R8 and R9 is connected on the R point, and they have constituted pulse charge and discharge circuit.Because of the existence of switching diode D6 is arranged, have only direct impulse to charge rapidly through 8 couples of electrochemical capacitor C4 of resistance R, switching diode D6 by the time, electrochemical capacitor C4 discharges lentamente through resistance R 9, makes current potential that R orders all the time greater than the negative threshold values V of two input NAND gate U4 inputs [5]
T-, two input NAND gate U4 outputs [4] keep low level, and triode Q2 continues conducting, and relay J R1 continues adhesive, electrical appliance continuous firing.
Pull out the electrical appliance attaching plug or close the mains switch of electrical appliance, the current potential that A is ordered in the circuit descends, the phototriode of photoelectrical coupler U2 ends, input [1] and [2] of two input NAND gate U3 are clamped on high potential by resistance R 7, output [3] output low level, diode D6 ends, electrolytic capacitor C4 slowly discharges through resistance R 9, through after some times, the current potential that R is ordered drops to the negative threshold values VT-of two input NAND gate U4 inputs [5], and two input NAND gate U4 circuit overturn, output [4] output high level, triode Q2 ends, and relay J R1 discharges, phase line contact chip [18] outage of socket.
When the electrical appliance short circuit, + 5V voltage is through R5 and R6 dividing potential drop, the potential rise that A is ordered gets higher, breakdown and the switch triode Q1 conducting of voltage stabilizing didoe ZD2, the emitter of Q1 is connected on power supply ground, and collector electrode is connected on the R point, even the phototriode conducting of photoelectrical coupler U2, two input NAND gate U3 overturn, and the R point still is a low level.So the output [4] of two input NAND gate U4 keeps high level constant, triode Q2 still ends, and relay J R1 does not have adhesive, and the phase line contact chip [18] of socket is not charged.
When staff is run in the socket two contact chips, cuticula resistance higher (being generally tens of kilohms) because of the skin of staff, + 5V voltage is through it and dividing potential drops such as resistance R 5 and R6, the small rising of the current potential that A is ordered in the circuit, the phototriode of photoelectrical coupler U2 still ends, two input NAND gate U3 output [3] output low levels, the R point is a low level, two input NAND gate U4 output high level is constant, triode Q2 ends, relay J R1 does not have adhesive, and the socket contact chip is not charged, makes the people exempt from electric shock.
When electrical appliance leaked electricity, electrical leakage voltage made the luminous tube among the photoelectrical coupler U7 luminous through R12, the photosensitive tube conducting, R-S trigger overturns, two input NAND gate U4 also overturn, and triode Q2 ends, and relay J R1 discharges, the electrical appliance outage makes the user exempt from electric shock.Because of R-S trigger has the function of state latch, even the current potential that R is ordered keeps high level, it is constant that it continues to keep state, and triode Q2 still ends.Only pull out after the attaching plug of electrical appliance, the state when R-S trigger just overturns to electricity consumption not is for electricity consumption is next time got ready.
This socket also has extensibility; the input of U6 [8] can add the protective circuit that various outputs are open collector output in circuit, can develop out various protector for household electrical appliances as the circuit such as earth leakage protective of overvoltage, under-voltage, overcurrent, band zero-sequence transformer.
Points for attention:
1.220V the phase line of AC power should be through capacitor C 1 place in circuit, and adds fuse FUSE1 between it.
2. resistance R 6 resistances should not got too greatly and (generally be got between 2K7-6K8.When too big, when staff touches two contact chips of socket simultaneously, the A point current potential after the resistance of staff and R5, the R6 dividing potential drop in the circuit will be greater than 0.6V, the phototriode conducting of photoelectrical coupler U2, and relay J R1 adhesive causes electric shock accidents.
3. the resistance of resistance R 5 is wanted suitably.When too big,, make circuit lose short guarantor's effect if the electrical appliance short circuit can't make voltage-stabiliser tube ZD2 puncture and switch triode Q1 conducting.Too hour, the electrical appliance that interior resistance is little can't be worked.
4. resistance R 8 resistances should not obtain too big.When too big, resistance R 8 is too little with the dividing potential drop of R9, makes R is ordered in the circuit current potential not reach the positive threshold values V of Schmidt trigger input
T+, circuit can't operate as normal.
5. the capacity of electrochemical capacitor C4 should not obtained too little.Too hour, in the pulse charge-discharge circuit, the current potential that R is ordered can't be kept the negative threshold values V greater than two input NAND gate inputs
T-, circuit is overturn continuously, electrical appliance can't operate as normal.
Claims (8)
1. multi-functional automatic identification protection against electric shock safety socket, form by socket, it is characterized in that: it also is made up of Intelligent Measurement circuit, short control circuit, continued power circuit, drive circuit and the pulse current charge circuit protected, connect connection by Intelligent Measurement circuit, pulse current charge circuit, drive circuit, accessory power outlet and continued power circuit and form series loop, between Intelligent Measurement circuit and drive circuit, also be in series with the short control circuit of protecting, between power supply mediation and pulse current charge circuit, drive circuit and the accessory power outlet.
2. multi-functional automatic identification protection against electric shock safety socket according to claim 1, it is characterized in that: the Intelligent Measurement circuit is a resistance R 6, the normally closed point of R5 and relay is serially connected between the phase line output terminal [18] of power supply ground [24] and socket, heavy-duty diode D3 and D4 forward series connection back and D5 reverse parallel connection, the anode of D3 is connected on the input (being Vcc) [21] of zero line, the negative electrode of D4 is connected on the zero line output [19] of socket, resistance R 4 is connected across on the base stage [26] of phototriode of the contact of R5 and R6 and photoelectrical coupler U2, becomes the Intelligent Measurement control end of this circuit.
3. multi-functional automatic identification protection against electric shock safety socket according to claim 1, it is characterized in that: the continued power circuit is that the light-emitting diodes tube cathode [22] of photoelectrical coupler U2 links with R3, the light-emitting diodes tube anode [21] of photoelectrical coupler U2, the negative electrode of D5 and anode and the Vcc of D3 link, the zero line output [19] of the negative electrode of the other end of R3, the anode of D5 and D4 and socket links, and becomes the control end of this circuit continued power function.
4. multi-functional automatic identification protection against electric shock safety socket according to claim 1; it is characterized in that: the anode that short protection control circuit is voltage stabilizing didoe ZD2 links to each other with the base stage of switch triode Q1; the ZD2 negative electrode links to each other with the contact of R5 and R6; the collector and emitter of Q1 is connected on respectively on B point and power supply ground [24], constitutes the short control end of protecting of this circuit.
5. multi-functional automatic identification protection against electric shock safety socket according to claim 1, it is characterized in that: drive circuit is composed in series by U4, R10, Q2, JR1.
6. multi-functional automatic identification protection against electric shock safety socket according to claim 1, it is characterized in that: the pulse current charge circuit is that switching diode D6, resistance R 8 and R9 are serially connected between the output [2] and power supply ground [24] of U3, electrolytic capacitor C4 is in parallel with resistance R 9, the contact of R8 and R9 is connected on the B point, has constituted pulse charge and discharge circuit.
7. according to claim 1 or 5 or 6 described multi-functional automatic identification protection against electric shock safety sockets, it is characterized in that: between not gate U4 and resistance R 9, be in series with mutual not gate U5 and U6 in parallel.
8. multi-functional automatic identification protection against electric shock safety socket according to claim 1 is characterized in that: the input at not gate U6 is provided with the protective circuit that output is open collector output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01212807 CN2469581Y (en) | 2001-03-17 | 2001-03-17 | Multifunction autodistinguishing shockproof safety jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01212807 CN2469581Y (en) | 2001-03-17 | 2001-03-17 | Multifunction autodistinguishing shockproof safety jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469581Y true CN2469581Y (en) | 2002-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01212807 Expired - Fee Related CN2469581Y (en) | 2001-03-17 | 2001-03-17 | Multifunction autodistinguishing shockproof safety jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469581Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035098A (en) * | 2010-10-31 | 2011-04-27 | 华南理工大学 | Photoelectric protective safety socket and photoelectric protective method thereof |
| CN104682124A (en) * | 2014-07-30 | 2015-06-03 | 粟有忠 | Self-checking and self-supply mode power strip |
| CN105580230A (en) * | 2013-06-06 | 2016-05-11 | D·阿维坦 | Electric safety circuit for use with an electric receptacle |
| CN109792217A (en) * | 2016-07-24 | 2019-05-21 | 郭振华 | Intelligent control circuit, charger, earth leakage protective device and intelligent socket |
-
2001
- 2001-03-17 CN CN 01212807 patent/CN2469581Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035098A (en) * | 2010-10-31 | 2011-04-27 | 华南理工大学 | Photoelectric protective safety socket and photoelectric protective method thereof |
| CN105580230A (en) * | 2013-06-06 | 2016-05-11 | D·阿维坦 | Electric safety circuit for use with an electric receptacle |
| CN105580230B (en) * | 2013-06-06 | 2018-09-14 | D·阿维坦 | The electric safety circuit used for electrical outlet |
| CN104682124A (en) * | 2014-07-30 | 2015-06-03 | 粟有忠 | Self-checking and self-supply mode power strip |
| CN109792217A (en) * | 2016-07-24 | 2019-05-21 | 郭振华 | Intelligent control circuit, charger, earth leakage protective device and intelligent socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020102 |