CN105580230A - Electric safety circuit for use with an electric receptacle - Google Patents
Electric safety circuit for use with an electric receptacle Download PDFInfo
- Publication number
- CN105580230A CN105580230A CN201380078802.8A CN201380078802A CN105580230A CN 105580230 A CN105580230 A CN 105580230A CN 201380078802 A CN201380078802 A CN 201380078802A CN 105580230 A CN105580230 A CN 105580230A
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- connector
- circuit
- signal
- control
- state
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
An electric safety circuit for use with an electric receptacle includes a relay and contacts in which power from a mains is supplied through the contacts to the receptacle only when the contacts are closed; a transistor for controlling the relay to open or close the contacts; an enabling device for supplying an enabling signal to the transistor to close the contacts when a plug of an electrically connected device is inserted into the receptacle, the electrically connected device is turned on, and there is no electrical contact by a person with the power supplied to the electrically connected device; and a disabling device for supplying a disabling signal to the transistor to open the contacts when there is electrical contact by a person with the power supplied to the electrically connected device.
Description
Background technology
The present invention relates generally to electric safety socket (socket), and more specifically for the electric safety socket that will prevent deleterious current from flowing to the people of the heat lead-in wire of touch electric connecting device or the thermoelectricity lead-in wire of other exposure any or activation.
When the plug of electric connecting device is inserted in wall socket, electric connecting device becomes and can operate.Such as, for firing equipment, the coil of firing equipment have run through they with produce heat electric current.
But, sometimes there is the hot wire contacts of people and electric connecting device.This can such as by following and occur: the coil touching firing equipment, the exposure contact (contact) touching damaged bulb, touch heat lead-in wire etc. by wearing and tearing electric wire.Under these circumstances, high electric current may cause the injury to people.
Summary of the invention
Thus, the object of this invention is to provide a kind of electric safety socket overcoming the problems referred to above.
Another object of the present invention is to provide a kind of electric safety socket, and it permits the flowing of high operating current when being connected to electric equipment, but it prevents the flowing of so high operating current when people touches the heat lead-in wire of electric connecting device.
According to an aspect of of the present present invention, provide a kind of electric safety circuit of electrical outlet (receptacle) for having spill (female) electrical connector (connector).Electricity safety circuit comprises: the connector with the first connector state and the second connector state, in described first connector state, be fed to the spill electrical connector of socket by described connector from the power of main line, in described second connector state, the power from main line is prevented to be fed to the spill electrical connector of socket by described connector; And for controlling the control circuit of connector between the first and second connector states.Electricity safety circuit also comprises: enable equipment, its for being inserted in the spill electrical connector of socket at the plug of electric connecting device, electric connecting device is switched on and there is not people with when being fed to the electrical contact of power of electric connecting device, will enable signal provision to control circuit being the first connector state by connector control; And disablement device, its for be inserted into socket at the plug of electric connecting device spill electrical connector in and there is people with when being fed to the electrical contact of power of electric connecting device, disable signal be supplied to control circuit to be controlled to be the second connector state by connector.
Preferably, connector comprises having closes (close) and in the second connector state, opens the relay (relay) of two contacts of (open) in the first connector state, and wherein the first contact is electrically connected with the power from main line, and the second contact is electrically connected with spill electrical connector.
Control circuit comprises can the circuit element of operation between following: control signal to be supplied to connector to be in the second state of a control in the second connector state to provide connector to be in the first state of a control in the first connector state and to prevent control signal to be fed to connector in response to the disable signal from disablement device to provide connector in response to from enabling the enabling signal of equipment by circuit element.Preferably, circuit element is included in the semiconductor device in the first state of a control, control signal being supplied to connector.More specifically, semiconductor device comprises the transistor with base stage and emitter-collector path (path), wherein base stage be supplied with to connect transistor and by its emitter-collector path control signal is supplied to connector from enable equipment enable signal or in order to turn off transistor and anti-stop signal arrives the disable signal from disablement device of connector by emitter-collector path.
The equipment of enabling comprises: initial circuit, its plug in response to electric connecting device is inserted in the spill electrical connector of socket and connects to export initialize signal, and turns off once the spill electrical connector being fed to socket by connector at the power from main line; And middle enable circuit, it is in enabling signal provision in the first state of a control with control circuit element to the circuit element of control circuit in response to the initialize signal from initial circuit.
Initial circuit comprises: for exporting the signal provision element of initialize signal; And actuation element, its have with by connector to the first side that the positive current of main line is connected and the second side of being connected with neutral point (neutral) when the plug of electric connecting device is initially inserted in the spill electrical connector of socket so that actuated signal supply element exports initialize signal.Signal provision element has base stage and emitter-collector path for the infrared crystal pipe exporting initialize signal, and actuation element comprises infrared lamp, infrared signal is supplied to the base stage of infrared crystal pipe to connect infrared crystal pipe to export initialize signal by its emitter-collector path by it.When connector moves to the first connector state, the second side of actuation element is supplied with by the positive current of connector to main line, to turn off actuation element.
Equipment of enabling also comprises holding circuit, and circuit element maintains in the first state of a control to middle enable circuit suppling signal to control middle enable circuit in response to connector is in the first connector state when initial circuit turns off by it.
Disablement device comprises: disable circuit element, and for disable signal being supplied to control circuit to make control circuit be operable in the second state of a control, it prevents from control signal being supplied to connector to be in the second connector state to provide connector; Suppling signal is to connect the middle disable circuit of disable circuit element; And initial disabled circuit, it to be inserted in the spill electrical connector of socket at the plug of electric connecting device and to there is people with when being fed to the electrical contact of power of electric connecting device, produces initial disabled signal and controls middle disable circuit suppling signal to connect disable circuit element.
Disable circuit element comprises transistor, described transistor has the base stage and emitter-collector path that are supplied with from the signal of middle disable circuit, and neutral point is supplied to control circuit to be controlled to be the second connector state by connector as disable signal by it.
Initial disabled circuit comprises the winding of transformer, power is fed to the spill electrical connector of socket from main line by it, and it produces initial disabled signal with when being fed to the electrical contact of power of electric connecting device there is people, and this causes the imbalance of the power being fed to the spill electrical connector of socket from main line.
Also existence is connected the Resetting Switching for deexcitation disablement device with disablement device.
The following embodiment of reading by reference to the accompanying drawings according to it becomes easily obviously by above and other objects, features and advantages of the present invention.
Accompanying drawing explanation
Fig. 1 is the circuit layout card of the bulb/IR transistor component of the safety circuit that power supply AC safety socket according to the present invention uses; And
Fig. 2 is the detailed circuit wiring diagram according to whole safety circuit of the present invention.
Embodiment
Initial with reference to its Fig. 1 with reference to accompanying drawing, first will discuss and be used for basis of the present invention.
As illustrated herein, electric AC electricity safety socket 10 according to the present invention is provided for and electric connecting device is connected to power supply removedly.Safety socket 10 comprises the socket 12 with the spill electrical connector 14,16 and 18 being suitable for three the sharp plugs receiving electric connecting device.Although socket 12 is shown as the delivery outlet being suitable for reception three sharp plugs, persons of ordinary skill in the art will recognize that and can use any delivery outlet or generation and any equipment or the mechanism that represent the electrical characteristics similar with socket 12.In one embodiment, bulb/IR transistor component 21(is hereafter discussing in more detail) can produce when not using socket 12 and also can insert or be used as the part of miscellaneous equipment (not shown).Turn back to the description of socket 12, spill electrical connector 14 comprises the charged or thermo-contact part H transporting charged (live) or thermocurrent from power supply to load (such as electric connecting device).Spill electrical connector 16 comprises the neutral contact N making electric current turn back to power supply.Spill electrical connector 18 comprises the 3rd contact for being connected to ground 20, protects with the insulation fault for electric connecting device.
As discussed above, the problem about known socket is, the people such as being touched the thermo-contact part of electric connecting device by the heater coil etc. of damaged bulb, wearing and tearing electric wire, heater will to be placed in and may be that dangerous big current contacts for people.
According to the present invention, safety socket 10 permits the flowing of high operating current when being connected to electric connecting device, but prevents the supply of so high electric current when people touches the thermo-contact part of electric connecting device.
Particularly, form the bulb/IR transistor component 21 enabling the initial circuit of equipment of the present invention and comprise four lamps 22,24,26 and 28, its each can be visible by the housing of socket 12, although they need not be like this.Preferably, lamp 22 and 24 is neon bulbs, and lamp 26 needs to send yellow or amber LED when resetting at circuit, and lamp 28 is infrared lamps.Neon lamp 22 has the terminal being directly connected to thermo-contact part H by resistor 30, and neon lamp 24 has the terminal being directly connected to thermo-contact part H by resistor 32.Neon lamp 22 and 24 be can't see forever, but is only provided for completing circuit.In a similar manner, LED green light 26 has the terminal being directly connected to thermo-contact part H by resistor 34.Infrared lamp 28 formation is enabled the actuation element of the initial circuit of equipment and has the terminal being directly connected to thermo-contact part H.Other contact of lamp 22 and 24 is linked together and is connected to the another terminal of lamp 26 by diode 36 and is connected to the another terminal of lamp 28 by resistor 38.As those of ordinary skill in the art can understand, neon lamp is the cathode gas discharge lamp of the generation of the electric discharge by the gas light of a type.
Bulb/IR transistor component 21 also comprise infrared (IR) transistor 40 using as enable equipment initial circuit signal provision element and be provided as adjacent with infrared lamp 28.Infrared crystal pipe 40 has input or base stage (not shown) and positive emitter 42 and negative collector electrode 44.When infrared transistor 40 is activated, permitting current flows to negative collector electrode 44 from positive emitter 42.As hereafter by discussed in detail, when electric connecting device is initially connected to thermo-contact part H and the neutral contact N of socket 12, such as by its three sharp plugs are inserted in spill electrical connector 14,16 and 18, permit high-current flow to lamp 22,24,26 and 28, turn-on lamp 22,24,26 and 28 thus.Because infrared lamp 28 is switched on, connects to make infrared crystal pipe 40 so be supplied to infrared crystal pipe 40 from its infrared light, thus cause completing and causing electric current to be fed to another circuit operating current being fed to electric connecting device of circuit.The part of infrared crystal pipe 40 and lamp 28 is encased in sleeve pipe (sleeve) 41.
Referring now to Fig. 2, use description to now the complete circuit of electric AC safety socket 10, it comprises the circuit of Fig. 1.As those of ordinary skill in the art can understand, AC safety socket 10 can be modified as and adapts to different delivery outlet, socket and equipment and do not depart from the scope of the present invention.Below describe and only mean exemplary, and the present invention should do not limited thus.
Be connected to the electrical connector 14 and 16 of socket 12 due to the low-power four-operational amplifier 48 controlled by bulb/IR transistor component 21 from the main line in the main line of power supply 50 i.e. wall or other power supply.
Particularly, from the main line in the main line of power supply 50 i.e. wall, thermocurrent H is fed to the incoming line 52 of the first loop coil or transformer 54, it is fed to the circuit 56 being connected to the connector comprising the relay 58 with the first and second contact C1 and C2 by transformer 54, and especially, be connected to the first contact C1 of relay 58.First contact C1 is also inputted with one of lamp 28 to be connected and to be inputted with of lamp 24 by the resistor 32 of bulb/IR transistor component and is connected.The neutral point N come from from the main line of wall at incoming line 60 place is supplied to the first transformer 54 and loop coil around the first transformer 54 is wound around six times, and then leave at circuit 62 place, described circuit 62 is connected with circuit 64 by the second transformer or loop coil 66, and is connected to the neutral spill electrical connector 16 of socket 12.Circuit 52 and 60 is isolated from each other by capacitor 68.
Be connected to hot spill electrical connector 14 by the circuit 70 of the second transformer 64, be connected to the second contact C2 of relay 58, and the connection between the resistor 30 and 34 being connected to bulb/IR transistor component 21.
Preferably, low-power four-operational amplifier 48 is LM324 modules, its comprise four independently, high-gain, internal frequency compensated operational amplifier 76,78,80 and 82, each has positive input, negative input and output at pin (pin) 1-14 place respectively.Operational amplifier 76 and 78 forms the middle enable circuit of equipment of enabling, and operational amplifier 80 and 82 forms the middle disable circuit of disablement device of the present invention.
Be connected to the negative input numbering 2 of operational amplifier 76 by resistor 83 from the output of the collector electrode 44 of IR transistor 40.The output of resistor 83 is also connected to the parallel circuits of resistor 86 and capacitor 88 by another resistor 84, and the output of this parallel circuits is connected to the positive input numbering 3 of operational amplifier 76.The output numbering 1 of operational amplifier is directly connected with the collector electrode 44 of IR transistor 40 and is connected to the positive input numbering 5 of operational amplifier 78.
The collector electrode 44 of IR transistor 40 is also connected to the capacitor 90 be connected in series with resistor 92.
First transformer 54 comprises secondary winding 94 and the second transformer 66 has secondary winding 96.A lead-in wire 100 of one of secondary winding 94 lead-in wire 98 and secondary winding 96 is by being connected to the side of the parallel circuits of the Zener diode 102 and 104 of two opposite orientation together with the input 11 of low-power four-operational amplifier 48, and be connected to resistor 86, and be connected to the collector electrode-emitter path of the transistor 106 forming control circuit of the present invention.The opposition side of the parallel circuits of the Zener diode 102 and 104 of two opposite orientation is connected to another lead-in wire 108 of secondary winding 94, and is connected to the connection between capacitor 90 and resistor 92 via another resistor 91.
Collector electrode-the emitter path of transistor 106 is also connected with the input of Zener diode 110.The output of Zener diode 110 is connected to the input numbering 4 of low-power four-operational amplifier 48 by resistor 112, be connected to the negative input numbering 6 of operational amplifier 78 by resistor 114, and be connected to the negative input numbering 13 of operational amplifier 82 by resistor 116.
Two resistors be connected in series 118 and 120 are connected between the negative input numbering 6 of operational amplifier 78 and the negative input numbering 13 of operational amplifier 82.Diode 122 is connected between the connection between the output of resistor 114 and resistor 118 and 120, and wherein the output of diode 122 is also connected to the collector electrode-emitter path of transistor 106.
The output numbering 7 of operational amplifier 78 is fed to the parallel circuits of resistor 140 and diode 142 and the diode 144 be connected in series and the resistor 146 be connected in series.The output of this parallel circuits is fed to the base stage of transistor 106 and is fed to the collector electrode of transistor 106 by the parallel circuits of capacitor 150 and resistor 152, and wherein this collector electrode is also connected with the input of Zener diode 126.
Collector electrode-the emitter path of transistor 106 is connected with the side L13 of the coil of relay 58, wherein the parallel circuits of diode 154 and capacitor 156 be connected to the coil of relay 58 side L12 and L13 between to isolate them.Relay 58 is provided to open or close contact C1, C2 by contact C3, as hereafter by description.
In addition, red LED 210 has a lead-in wire of the side L13 of the coil being directly connected to relay 58, and the opposite side L12 of relay 58 is connected to another lead-in wire of red LED 210 by diode 212.Red LED 210 is connected when relay is connected, and is provided in socket 12 place and there is high AC electric current and therefore the electrical connector 14 and 16 of socket 12 is unsafe visible instruction for the touch by people.
Green LED 214 has the terminal being connected to the emitter side of transistor 106 by diode 216, and another terminal is connected to the collector electrode side of transistor 106 by resistor 218.Green LED 214 is connected when transistor 106 turns off and relay 58 turns off, and is provided in socket 12 place and there is not high AC electric current and make the electrical connector 14 and 16 of socket 12 be safe instruction for the touch by people.When transistor 106 is connected, there is the electric current by its emitter-collector path, make two of green LED 214 terminals all at identical voltage place, green LED 214 is turned off.Preferably user is allowed to know dangerous currents when in flowing or when touch socket or other electric transmitter is safe for user's these lamps visible.
Electric current is also fed to diode bridge circuit 166 by capacitor 164 by the main line from power supply 50, an one terminal 166a is connected to the side L12 of the coil of relay 58 as thermocurrent, its another terminal 166b is connected to the neutral circuit 60 of the neutral current N being supplied with the main line come from from power supply 50, and wherein its another terminal 166c is provided with neutral current.
Circuit and the resistor 172 of electrolytic capacitor 170, two Zener diodes be connected in series 174 and 176 are connected in parallel with each other between terminal 166a and 166c of diode bridge circuit 166.
Capacitor 164, diode bridge circuit 166, electrolytic capacitor 170, Zener diode 174 and 176 and resistor 172 are for being reduced to much smaller voltage by the voltage from main line 50, such as be reduced to about 20 volts of DC, it is supplied to the side L12 of the coil of relay 58.This voltage never appears at socket 12 place.
Second transformer 66 comprises the secondary winding 96 with lead-in wire 100 and 101, and wherein lead-in wire 100 and 101 is isolated from each other by capacitor 103.In the connection that discussed above is lead-in wire 100.Lead-in wire 101 is connected to low-power four-operational amplifier 48 by resistor/capacitor circuit 184.Particularly, lead-in wire 101 is connected to the positive input numbering 10 of operational amplifier 80 by two resistors be connected in series 186 and 188.The output of the second resistor 188 is also connected to the connection between two capacitors 190 and 192, and wherein the opposition side of capacitor 190 is connected to the negative input numbering 9 of operational amplifier 80.Resistor 194 is connected in parallel with being connected in series of capacitor 190 and 192.Resistor 194 is connected to the output numbering 8 of operational amplifier 80 by another resistor 196, is connected to the positive input numbering 12 of operational amplifier 82, and is connected to a pole of Resetting Switching 198.Between the tie point that capacitor 200 is connected to resistor 186 and 188 and the output of resistor 196.
The circuit 98 of the first transformer 54 is also connected to the collector electrode-emitter path of transistor 202, and wherein the base stage of transistor 202 is connected to the output numbering 14 of operational amplifier 82 by resistor 204.When transistor 202 is connected by its base stage of electric current, electric current flows through the collector electrode-emitter path of transistor 202.Between the base stage that other transistor 206 is connected to transistor 202 and collector electrode.The output numbering 14 of operational amplifier 82 is also connected to the phase antipole of Resetting Switching 198 by diode 208.
Finally, exist and be connected to Test Switchboard 162 between the circuit 64 of the second transformer 66 and the contact C2 of relay 58, for providing the test of circuit to determine that it operates via resistor 219.
The operation of above circuit will be described now.
First suppose that electric connecting device plug is inserted in the electrical connector 14 and 16 of socket 12 and electric connecting device is switched on.
From the main line of wall or power supply 50, thermocurrent H is fed to incoming line 52, it arrives circuit 56 through the first transformer 54 and then arrives the contact C1 of relay 58.This thermocurrent H is fed to infrared lamp 28 and arrives neon lamp 24 by resistor 32.Now, the neutral point N come from from the main line of wall at incoming line 60 place is supplied to the first loop coil 54 and is wound around six times around the first loop coil 54, and then leave at circuit 62 place, described circuit 62 is connected with circuit 64 and is connected to the neutral spill electrical connector 16 of socket 12.
Because electric connecting device plug is inserted in electrical connector 14 and 16, so hot spill electrical connector 14 is connected to neutral point by neutral spill electrical connector 16, and as a result, neutral current is supplied to circuit 70 and is fed to contact C2 thus.At this time durations, relay 58 is opened and contact C1 and C2 is free of attachment to each other.Neutral current is also supplied to resistor 30 and 34.As a result, all lamps 22,24,26 and 28 are lighted, that is, because there is thermocurrent at the contact C1 side place of bulb/IR transistor component 21 and there is neutral current at the contact C2 side place of bulb/IR transistor component 21.
Because infrared lamp 28 is lighted, so required infrared signal is supplied to the base stage of the infrared crystal pipe 40 of connection by this, electric current is made to flow to its collector electrode 44 from emitter 42.
Now, the thermocurrent H from main line is also supplied by capacitor 164, diode bridge 166, electrolytic capacitor 170 and Zener diode 174 and 176 so that voltage is reduced to less level, such as about 20 volts.This low-voltage is supplied to the side L12 of main relay 58 and is then fed to the emitter of infrared crystal pipe 40 by resistor 210 and 212.Then this low-voltage is passed to the collector electrode of the infrared crystal pipe 40 connected by infrared lamp 28, and directly supplied, and via resistor 83,84,86,92, capacitor 88 and 90 and Zener diode 102 and 104 and be fed to the input numbering 2 and 3 of operational amplifier 76, the output numbering 1 of described operational amplifier 76 is fed to the positive input numbering 5 of operational amplifier 78.Low-voltage is also fed to the negative input numbering 6 of operational amplifier 78 by resistor 114,118 and 120 and diode 110 and 122.As a result, positive current is fed to the base stage of transistor 106 by the output numbering 7 of operational amplifier 78 by resistor 140,146 and 152, diode 142 and 144 and capacitor 150, this causes transistor 148 to be connected.As a result, the other end L13 of main relay 58 is in neutrality or negative, because afterbody or the negative terminal of the Zener diode 174 of close main line are connected to the other end L13 of main relay 58 by the collector electrode-emitter path of transistor 106, and therefore main relay 58 activated to cut out contact C1 and C2 by contact C3.
Now, the thermocurrent H at contact C1 place is also connected to contact C2 and makes the both sides of bulb/IR transistor component 21 all be supplied with thermocurrent H now, and bulb thus/IR transistor component 21 turns off, and lamp 22,24,26 and 28 is no longer lighted.This means that IR transistor 40 also turns off and its emitter-collector path is closed.
Now, because bulb/IR transistor component 21 turns off, so do not have electric current to flow through the emitter-collector path of IR transistor 40, and therefore there is not the electric current from this path to operational amplifier 76 and 78.But, because contact C1 and C2 closes, so provide small area analysis at output winding 94 place of transformer 54, and especially, at circuit 98 place, its via resistor 83,84,91,92, capacitor 88 and 90 and Zener diode 102 and 104 be fed to the input numbering 2 and 3 of operational amplifier 76.As a result, the winding 94 of transformer 54 is replaced now and is supplied operating current to operational amplifier 76 and 78 so that the positive input maintained to transistor 106 is to maintain on-state by transistor 106, makes contact C1 and C2 maintain closedown.Therefore, the first transformer 54 holding circuit is connected, thermocurrent H is fed to hot spill electrical connector 14 when bulb/IR transistor component 21 turns off.
Now, the thermocurrent from contact C2 is supplied to circuit 70 and is then fed to the hot spill electrical connector 14 of socket 12.As a result, total power be supplied to electric connecting device for operating it.
And now, due to there is circuit 64 and 70 place electric current between balance, so there is not power stage at secondary winding 96 place of transformer 66.This means do not have electric current to be fed to operational amplifier 80 and 82.
If now, then there is the leakage immediately to ground in people's heater coil etc. of heater of touching wearing and tearing electric wire, touching the contact of damaged bulb, touch electric connecting device.Therefore now, no longer balance between its positive and negative lead-in wire of the second transformer 66 on electric wire 64 and 70, make to supply low-voltage by the winding 96 of the second transformer 66, it is fed to operational amplifier 80 and 82 by resistor 186,188,194 and 196 and capacitor 190,192 and 200, and positive voltage is fed to the base stage of transistor 202 to connect transistor 202 by the output numbering 14 of operational amplifier 82 thus.This causes the afterbody of the Zener diode 174 of close main line or negative terminal to be connected to the collector electrode-emitter path of transistor 202 by the input numbering 11 of low-power four-operational amplifier 48.Because this Path Connection is to the output numbering 7 of operational amplifier 78, so this output numbering 7 is changed to negative or neutral value, this causes transistor 106 to turn off.As a result, relay 58 is de-energized and contact C1 and C2 is opened again, and thermocurrent H is no longer fed to circuit 70 and hot spill electrical connector 14 by contact C1 and C2.In this respect, transistor 202 forms the disable circuit element of disablement device of the present invention, and operational amplifier 80 and 82 forms the middle disable circuit of disablement device, and winding 96 forms the initial disabled circuit of disablement device of the present invention.And now, bulb 26 is switched on to be provided as the visible gold-tinted requiring the instruction reset.
More than operate and occur extremely rapidly, that is, occur in several milliseconds, make to there is not the injury to people.
Circuit can reset as follows.Particularly, be only necessary that and press Resetting Switching 198.This for being disconnected from circuit by transistor 102 and turning off transistor 102 thus, thus removes the negative of the base stage place of transistor 106 or neutral current, again positive current is fed to automatically the base stage of transistor 106 thus in mode discussed above.Then operation turns back to initial condition as discussed above, wherein supposes that electric connecting device plug is inserted in the electrical connector 14 and 16 of socket 12, makes the operation of electric connecting device again to start with same way discussed above.
If the plug of electric connecting device is not inserted in spill electrical connector 14,16 and 18, then contact C1 and C2 opens, and thermocurrent H is provided at the side place of bulb/IR transistor component 21.But the opposition side of bulb/IR transistor component 21 is connected to contact C2 and is connected with the circuit 70 all opened and hot spill electrical connector 14.Owing to there is open circuit, so bulb/IR transistor component 21 turns off and does not have electric current to be supplied to the hot spill electrical connector 14 of socket 12.
By not limiting example, describe although above and relate generally to AC socket or delivery outlet, all or some feature can be incorporated in other electric equipment (such as hair-dryer or baking box) by some embodiment of the present invention, to provide benefit described above.The use of enable circuit and disable circuit is not limited to realization described above, but can enable and forbid flowing and the equipment of various electric current.The use of some aspect described above is also anticipated and is suitable for but is not limited to other mechanism of fuse box, lamp stand or supply or received current.When not limiting foregoing teachings, according to one embodiment of present invention, bulb as shown in Figure 1/IR transistor component 21 operates in the following manner.If the sufficiently high electric current being such as derived from electric product is fed to bulb/IR transistor component 21, then infrared lamp 28 is lighted.In this scenario, all or some in lamp 22,24 and 26 is also lighted.When infrared lamp 28 is lighted, it works to activate infrared crystal pipe 40.When infrared transistor 40 is activated, permitting current flows.If do not have electric current to be supplied, then each in bulb 22,24,26 and 28 is unglazed or do not light by maintenance.If the less electric current making infrared lamp 28 light (fewer than high electric current discussed above) is supplied to bulb/IR transistor component 21, then any or all of likely in lamp 22,24 or 26 will be lighted.But because infrared lamp 28 is not lighted, so infrared crystal pipe 40 is not activated, and therefore electric current can not flow.Such as, in FIG, electric current can not flow to negative collector electrode 44 from positive emitter 42.Thus, the use operation of bulb/IR transistor component 21 and neon lamp 22 and 24 and/or LED26 makes it possible to light infrared lamp 28 or lack lighting of infrared lamp 28, and it enables and forbids infrared crystal pipe 40 then to control the flowing of electric current.In addition, as those of ordinary skill in the art can understand, can use not based on other infrared lamp or transistor to make it possible to for induced current.
Describe concrete preferred embodiment of the present invention with reference to the accompanying drawings, to understand, the invention is not restricted to this definite embodiment and those of ordinary skill in the art can realize various change and amendment wherein and not depart from as the spirit or scope of the present invention defined by the appended claims.
Claims (15)
1., for the electrical outlet with spill electrical connector or the electric safety circuit of electric connecting device be connected with electrical outlet, described electric safety circuit comprises:
There is the connector of the first connector state and the second connector state, in described first connector state, be fed to the spill electrical connector of socket by described connector from the power of main line, in described second connector state, the power from main line is prevented to be fed to the spill electrical connector of socket by described connector;
For controlling the control circuit of the operation of described connector between described first and second connector states;
Enable equipment, its for being inserted in the spill electrical connector of socket at the plug of electric connecting device, electric connecting device is switched on and there is not people with when being fed to the electrical contact of power of described electric connecting device, will enable signal provision to described control circuit to control as described first connector state by described connector; And
Disablement device, its for be inserted into socket at the plug of electric connecting device spill electrical connector in and there is people with when being fed to the electrical contact of power of described electric connecting device, disable signal be supplied to described control circuit to control described connector for described second connector state.
2. electric safety circuit according to claim 1, wherein said connector comprises having closes and the relay of two contacts opened in the second connector state in the first connector state, and wherein said first contact is electrically connected with the power from main line, and the second contact is electrically connected with spill electrical connector.
3. electric safety circuit according to claim 2, wherein said control circuit comprises can the circuit element of operation between following:
Enable signal described in equipment in response to from described enabling and control signal to be supplied to described connector to be in the first state of a control in described first connector state to provide described connector by described circuit element, and
Prevent described control signal to be fed to described connector in response to the described disable signal from described disablement device and be in the second state of a control in described second connector state to provide described connector.
4. electric safety circuit according to claim 3, wherein said circuit element is included in the semiconductor device in described first state of a control, described control signal being supplied to described connector.
5. electric safety circuit according to claim 4, wherein said semiconductor device comprises the transistor with base stage and emitter-collector path, and wherein said base stage is supplied with one of following:
A) signal is enabled from described enabling described in equipment, in order to connect transistor and by its emitter-collector path, control signal to be supplied to described connector, and
B) from the described disable signal of described disablement device, in order to turn off transistor and anti-stop signal arrives described connector by emitter-collector path.
6. electric safety circuit according to claim 3, wherein
Described equipment of enabling comprises:
Initial circuit, its plug in response to electric connecting device is inserted in the spill electrical connector of socket and connects to export initialize signal, and turns off once the spill electrical connector being fed to socket by connector at the power from main line; And
Middle enable circuit, it is in enabling signal provision in described first state of a control to control described circuit element to the described circuit element of control circuit in response to the described initialize signal from described initial circuit.
7. electric safety circuit according to claim 6, wherein said equipment of enabling also comprises holding circuit, and it is in described first connector state in response to described connector when described initial circuit turns off and is maintained in described first state of a control by described circuit element to control described middle enable circuit to described middle enable circuit suppling signal.
8. electric safety circuit according to claim 6, wherein said initial circuit comprises:
For exporting the signal provision element of initialize signal; And
Actuation element, its have with by connector to the first side that the positive current of main line is connected and the second side of being connected with neutral point when the plug of electric connecting device is initially inserted in the spill electrical connector of socket, to activate described signal provision element exporting described initialize signal.
9. electric safety circuit according to claim 8, wherein said signal provision element has base stage and emitter-collector path for the infrared crystal pipe exporting initialize signal, and described actuation element comprises infrared lamp, infrared signal is supplied to the base stage of described infrared crystal pipe to connect described infrared crystal pipe to export described initialize signal by its emitter-collector path by it.
10. electric safety circuit according to claim 9, also comprises the sleeve pipe enclosing described infrared crystal pipe and described infrared lamp.
11. electric safety circuits according to claim 8, wherein when connector moves to described first connector state, described second side of actuation element is supplied with by the positive current of connector to main line, to turn off described actuation element.
12. electric safety circuits according to claim 3, wherein said disablement device comprises:
Disable circuit element, for described disable signal being supplied to described control circuit to make described control circuit be operable in described second state of a control, it prevents from described control signal being supplied to described connector to be in described second connector state to provide described connector;
Suppling signal is to connect the middle disable circuit of described disable circuit element; And
Initial disabled circuit, it to be inserted in the spill electrical connector of socket at the plug of electric connecting device and to there is people with when being fed to the electrical contact of power of described electric connecting device, produces initial disabled signal and controls described middle disable circuit and supply described signal to connect described disable circuit element.
13. electric safety circuits according to claim 12, wherein said disable circuit element comprises transistor, described transistor has the base stage and emitter-collector path that are supplied with from the signal of middle disable circuit, and neutral point is supplied to described control circuit to control described connector for described second connector state as described disable signal by it.
14. electric safety circuits according to claim 12, wherein said initial disabled circuit comprises the winding of transformer, power is fed to the spill electrical connector of socket from main line by it, and it produces described initial disabled signal with when being fed to the electrical contact of power of described electric connecting device there is people, and this causes the imbalance of the power being fed to the spill electrical connector of socket from main line.
15. electric safety circuits according to claim 14, also comprise the Resetting Switching be connected with disablement device for disablement device described in deexcitation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2013/044531 WO2014196977A2 (en) | 2013-06-06 | 2013-06-06 | Electric safety circuit for use with an electric receptacle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105580230A true CN105580230A (en) | 2016-05-11 |
| CN105580230B CN105580230B (en) | 2018-09-14 |
Family
ID=52008682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380078802.8A Active CN105580230B (en) | 2013-06-06 | 2013-06-06 | The electric safety circuit used for electrical outlet |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3005508A4 (en) |
| CN (1) | CN105580230B (en) |
| CA (1) | CA2929550C (en) |
| HK (1) | HK1219812A1 (en) |
| WO (1) | WO2014196977A2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052752A (en) * | 1990-11-12 | 1991-07-03 | 姚福来 | Safety intelligence socket |
| CN1059425A (en) * | 1990-08-28 | 1992-03-11 | 戴维·M·沃尔夫 | The controller of programmable safety electrical socket |
| US5151841A (en) * | 1988-05-23 | 1992-09-29 | B & R Electrical Plc | Electrical safety apparatus |
| CN2469581Y (en) * | 2001-03-17 | 2002-01-02 | 陈全俤 | Multifunction autodistinguishing shockproof safety jack |
| CN1384578A (en) * | 2001-04-27 | 2002-12-11 | 钟汝祥 | Comprehensive leakage protection plug |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3668469A (en) * | 1970-12-21 | 1972-06-06 | Safety Co The | Monitor for receptacle with two or three contacts |
| CH598702A5 (en) * | 1975-03-26 | 1978-05-12 | Kloeckner Werke Ag | |
| US5003486A (en) * | 1989-02-24 | 1991-03-26 | Nero Technologies Ltd. | Programmable safety electrical socket controller |
| US7400476B1 (en) * | 2003-12-10 | 2008-07-15 | Hull Jr Vernon M | Safety device for prevention of electrical shocks |
| US7505237B2 (en) * | 2005-10-05 | 2009-03-17 | Energy Safe Technologies, Inc. | Electrical safety outlet |
| US8228071B2 (en) * | 2006-07-24 | 2012-07-24 | Newire, Inc. | Electrical safety devices and systems for use with electrical wiring, and methods for using same |
-
2013
- 2013-06-06 CA CA2929550A patent/CA2929550C/en active Active
- 2013-06-06 EP EP13886438.4A patent/EP3005508A4/en not_active Withdrawn
- 2013-06-06 CN CN201380078802.8A patent/CN105580230B/en active Active
- 2013-06-06 WO PCT/US2013/044531 patent/WO2014196977A2/en active Application Filing
-
2016
- 2016-07-04 HK HK16107690.0A patent/HK1219812A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151841A (en) * | 1988-05-23 | 1992-09-29 | B & R Electrical Plc | Electrical safety apparatus |
| CN1059425A (en) * | 1990-08-28 | 1992-03-11 | 戴维·M·沃尔夫 | The controller of programmable safety electrical socket |
| CN1052752A (en) * | 1990-11-12 | 1991-07-03 | 姚福来 | Safety intelligence socket |
| CN2469581Y (en) * | 2001-03-17 | 2002-01-02 | 陈全俤 | Multifunction autodistinguishing shockproof safety jack |
| CN1384578A (en) * | 2001-04-27 | 2002-12-11 | 钟汝祥 | Comprehensive leakage protection plug |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3005508A2 (en) | 2016-04-13 |
| EP3005508A4 (en) | 2017-03-15 |
| CN105580230B (en) | 2018-09-14 |
| WO2014196977A3 (en) | 2015-07-02 |
| CA2929550A1 (en) | 2014-12-11 |
| HK1219812A1 (en) | 2017-04-13 |
| WO2014196977A2 (en) | 2014-12-11 |
| CA2929550C (en) | 2018-08-21 |
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