CN2713706Y - Circuit protector and electric outlet - Google Patents

Circuit protector and electric outlet Download PDF

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Publication number
CN2713706Y
CN2713706Y CN 200420043732 CN200420043732U CN2713706Y CN 2713706 Y CN2713706 Y CN 2713706Y CN 200420043732 CN200420043732 CN 200420043732 CN 200420043732 U CN200420043732 U CN 200420043732U CN 2713706 Y CN2713706 Y CN 2713706Y
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CN
China
Prior art keywords
pin
circuit
power
coil
output
Prior art date
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.)
Expired - Fee Related
Application number
CN 200420043732
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Chinese (zh)
Inventor
杨文和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DONGGUAN DALANG JINZHUN ELECTRIC APPLIANCE PLANT
Original Assignee
DONGGUAN DALANG JINZHUN ELECTRIC APPLIANCE PLANT
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Publication date
Application filed by DONGGUAN DALANG JINZHUN ELECTRIC APPLIANCE PLANT filed Critical DONGGUAN DALANG JINZHUN ELECTRIC APPLIANCE PLANT
Priority to CN 200420043732 priority Critical patent/CN2713706Y/en
Application granted granted Critical
Publication of CN2713706Y publication Critical patent/CN2713706Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model belongs to the technical field of emergency protective circuit device. The utility model solves the complicated structure of the prior-leakage switching circuit, many electronic components and large occupied volume. If the power socket is inserted with too many electric devices or too large, the overload is generated and the fuse of the feed circuit is burned out. Thus, the entire feed circuit is cut off and other sockets without overload are affected on cutting off. The circuit protector comprises an input end, an output end, a lead wire connected between the input end and the output end, an AC-DC power-source converting circuit which is connected on the input end and provides the power for the circuits that need the DC voltage. The circuit protector also comprises a switching circuit which is connected on the lead wire in series and is used for cutting off the output current passing through the lead wire. A magnet ring M1 which is sheathed on the lead wire is included in the circuit protector and the magnet ring M1 is provided with a coil L1. The circuit protector also comprises a control circuit which is supplied the power by the AC-DC power-source converting circuit. The control circuit receives the signal of the output end of the coil L1 and controls the on-off of the switching circuit. The control circuit is provided with a resetting push-button S2 which makes the switching circuit switch on.

Description

Circuit brake and supply socket
Technical field
The utility model belongs to emergency protective circuit device technique field.
Background technology
Existing leakage switch includes electric-leakage detection circuit, switching circuit, current detection circuit, ac-dc power conversion circuit, control circuit.Its shortcoming is the circuit structure complexity, and electronic devices and components are many, and the volume that takies is big.Supply socket comprises housing, is provided with pin electrode and power connector end in housing.After power connector end was connected with the mains line, the plug of electrical equipment inserted in the jack and just can use.Its shortcoming is, the electrical equipment that is patched on socket is too much, or when excessive, will produce overload, can cause that the insurance in the power supply circuits is blown, and causes whole power supply circuits to have a power failure, and influences other sockets that excess load is not arranged outages.And a load electric leakage ought wherein be arranged, and also will cause the leakage switch tripping operation, influence other socket outages.
Summary of the invention
The purpose of this utility model is to provide a kind of circuit structure simple, and electronic devices and components are few, the circuit brake that volume is little.
The purpose of this utility model is to utilize the foregoing circuit protector, provides a kind of circuit structure simple, and electronic devices and components are few, the supply socket that volume is little.
For realizing the purpose of this utility model, described circuit brake comprises input A, B end and exports A ', B ' end; Be connected to the lead L between input, the output A-A ', L B-B 'One ac-dc power conversion circuit is connected on the input, for other needs the circuit supply of direct voltage work; One is serially connected in lead L A-A ', L B-B 'On switching circuit, be used to cut off output current by lead; Described lead L A-A ', L B-B 'On be with a magnet ring M 1, described magnet ring M 1Be provided with coil L 1A control circuit is by ac-dc power conversion circuit power supply, receiving coil L 1Output end signal, switching circuit is carried out break-make control, described control circuit is provided with the reset key S2 that switching circuit is connected.
Because lead L A-A ', L B-B 'On be with a magnet ring M 1, described magnet ring M 1Be provided with coil L 1, work as L A-A ', L B-B 'On current imbalance, leaky has been described, coil L 1Export a signal of telecommunication to control circuit, make its control switch circuit break line L A-A ', L B-B '
For realizing another purpose of the present utility model, described supply socket is connected to output, the input of aforesaid circuit brake between pin electrode and power connector end, and reset key is arranged on panel.
Like this, as long as leaky appears in the power consumption equipment in this supply socket, then pin electrode outage, thus avoid whole circuit outage, convenient to the electric equipment maintenance, and can know which electric equipment electric leakage.After electric equipment overhauls, press reset key and restore electricity.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is the circuit block diagram of the utility model circuit brake.
Fig. 2 is for realizing the concrete line map of Fig. 1.
Fig. 3 is the another kind of form circuit diagram of control circuit among Fig. 1.
Fig. 4 is another the ac-dc power conversion circuit figure among Fig. 1.
Fig. 5 is the utility model electric outlet structure figure.
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail:
As shown in fig. 1, circuit brake described in the utility model comprises the housing (not shown), wherein is provided with input A, B end, output A ', B ' end, lead L A-A ', L B-B ', ac-dc power conversion circuit, switching circuit, magnet ring M 1, coil L 1, control circuit, reset key S2, detection of electrical leakage button S 1, resistance R 7, magnet ring M 2, coil L 2, integrated operational amplifier circuit L 324
At magnet ring M 1The lead L on both sides A-A ', L B-B 'On be connected to the detection of electrical leakage button S of serial connection 1And resistance R.
Described lead L B-B 'On be with a magnet ring M 2, described magnet ring M 2Be provided with coil L 2, coil L 2The input of output termination switching circuit.
Switching circuit is for being serially connected in lead L A-A ', L B-B 'On controllable silicon BT and relay coil J, the normally opened contact J of relay KBe serially connected in lead L A-A ', L B-B 'On.On the trigger electrode of controllable silicon BT, obtain triggering signal, can make the normally opened contact J of relay KClosure is led to input A, B end and output A ', B ' termination.
As shown in Figure 2, ac-dc power conversion circuit can also be to comprise rectifier bridge Q 1, its ac input end voltage is by the resistance R of serial connection 1, R 2And C 1Parallel circuits step-down, dc output end voltage are connected to voltage stabilizing didoe D in parallel 2With filter capacitor C 2, after step-down, rectification again is by voltage stabilizing didoe D with 110 or 220 volts high pressure 2With filter capacitor C 2Voltage regulation filtering output galvanic current is pressed, for control circuit work.
As shown in Figure 4, ac-dc power conversion circuit comprises rectifier bridge Q 1, its dc output end passes through resistance R 1Be connected to voltage stabilizing didoe D in parallel 2With filter capacitor C 1After 110,220 volts high pressure elder generation rectification, through resistance R 1After the step-down, again by voltage stabilizing didoe D 2With filter capacitor C 1Voltage regulation filtering output galvanic current is pressed, for control circuit work.
Described control circuit is integrated operational amplifier circuit L 324,
Pin 1 connects the power cathode of ac-dc power conversion circuit by diode D6;
Pin 2 is connected to tie point between the resistance R 6 that is serially connected on the ac-dc power conversion circuit power output end, the R5;
Pin 3 wiring circle L 1, L 2An end, and be provided with resistance R 4 between the power cathode;
Pin 4 connects positive source;
Be serially connected with reset key S2 and diode D5 between pin 5 and the pin 8,12, be connected to resistance R 3 between pin 5 and the power cathode;
Pin 6 and coil L 1, L 2Another termination power cathode;
Pin 7 links to each other with pin 10;
Pin 9 connects positive source with pin 13;
Pin 11 connects power cathode;
Pin 14 is the control output end, connects the control end of switching circuit.
As reset key S 2During connection, pin 14 output signals make controllable silicon BT conducting, relay coil J energising, its normally opened contact J KClosed.
As coil L 1Perhaps coil L 2Or both in conjunction with output voltage signal the time, be added in integrated operational amplifier circuit L 324Pin 3,6 on, in pin 14 output signals controllable silicon BT is turn-offed, relay coil J outage, its normally opened contact J KDisconnect.Coil L 1The output signal of telecommunication, expression produces leakage current.Coil L 2The output voltage signal value is big more, and the expression load current is big more, as coil L 2When output voltage signal reaches set point, controllable silicon BT is turn-offed in pin 14 output signals.
As detection of electrical leakage button S 1After pressing, resistance R 7Be equivalent to load and be added in lead L A-A ', L B-B 'On magnet ring M 1Before and after between, this moment lead L A-A ', L B-B 'At magnet ring M 1In the electric current disequilibrium, coil L 1Produce voltage signal, be equivalent to artificial electric leakage, be used to detect relay and whether move.
IC in the described control circuit can also be constituted by 555 time-base integrated circuits and its peripheral electron element, as shown in Figure 3.
As shown in Figure 5, the utility model supply socket is on the basis of existing technology, is connected to output, the input of the circuit brake of aforesaid any form between pin electrode Ф and power connector end N, reset key S 2Be arranged on the panel detection of electrical leakage button S 1Be arranged on the panel.
During use, press reset key S 2, be switched between pin electrode Ф and the power connector end N, when load produces electric leakage, short circuit, overload phenomenon, will be disconnected by relay between pin electrode Ф and the power connector end N.
The utility model circuit brake and according to the supply socket of its structural design is installed on the circuit, has the leakage, breaking protection, short interruption protection, the function of overload cut out protection.Defencive function is wide, protection quick action, high, the light and handy safety easy to use of structure of stability.

Claims (7)

1. a circuit brake comprises
Input A, B end and output A ', B ' end;
Be connected to the lead L between input, the output A-A ', L B-B '
One ac-dc power conversion circuit is connected on the input, for other needs the circuit supply of direct voltage work;
One is serially connected in lead L A-A ', L B-B 'On switching circuit, be used to cut off output current by lead;
It is characterized in that:
Described lead L A-A ', L B-B 'On be with a magnet ring M 1, described magnet ring M 1Be provided with coil L 1
A control circuit is by ac-dc power conversion circuit power supply, receiving coil L 1Output end signal, switching circuit is carried out break-make control, described control circuit is provided with the reset key S2 that switching circuit is connected.
2. circuit brake according to claim 1 is characterized in that at magnet ring M 1The lead L on both sides A-A ', L B-B 'On be connected to the detection of electrical leakage button S of serial connection 1And resistance R 6
3. circuit brake according to claim 1 and 2 is characterized in that described lead L B-B 'On be with a magnet ring M 2, described magnet ring M 2Be provided with coil L 2, coil L 2The input of output termination switching circuit.
4. circuit brake according to claim 1 and 2 is characterized in that described control circuit is integrated operational amplifier circuit L 324,
Pin 1 connects the power cathode of ac-dc power conversion circuit by diode D6;
Pin 2 is connected to tie point between the resistance R 6 that is serially connected on the ac-dc power conversion circuit power output end, the R5;
Pin 3 wiring circle L 1, L 2An end, and be provided with resistance R 4 between the power cathode;
Pin 4 connects positive source;
Be serially connected with reset key S2 and diode D5 between pin 5 and the pin 8,12, be connected to resistance R 3 between pin 5 and the power cathode;
Pin 6 and coil L 1, L 2Another termination power cathode;
Pin 7 links to each other with pin 10;
Pin 9 connects positive source with pin 13;
Pin 11 connects power cathode;
Pin 14 is the control output end, connects the control end of switching circuit.
5. circuit brake according to claim 3 is characterized in that described control circuit is integrated operational amplifier circuit L 324,
Pin 1 connects the power cathode of ac-dc power conversion circuit by diode D6;
Pin 2 is connected to tie point between the resistance R 6 that is serially connected on the ac-dc power conversion circuit power output end, the R5;
Pin 3 wiring circle L 1, L 2An end, and be provided with resistance R 4 between the power cathode;
Pin 4 connects positive source;
Be serially connected with reset key S2 and diode D5 between pin 5 and the pin 8,12, be connected to resistance R 3 between pin 5 and the power cathode;
Pin 6 and coil L 1, L 2Another termination power cathode;
Pin 7 links to each other with pin 10;
Pin 9 connects positive source with pin 13;
Pin 11 connects power cathode;
Pin 14 is the control output end, connects the control end of switching circuit.
6. supply socket is characterized in that being connected to output, input as described any one circuit brake of claim 1～5 between pin electrode Φ and power connector end N, reset key S2 is arranged on the panel.
7. supply socket according to claim 6 is characterized in that described detection of electrical leakage button S 1Be arranged on the panel.
CN 200420043732 2004-03-19 2004-03-19 Circuit protector and electric outlet Expired - Fee Related CN2713706Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420043732 CN2713706Y (en) 2004-03-19 2004-03-19 Circuit protector and electric outlet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420043732 CN2713706Y (en) 2004-03-19 2004-03-19 Circuit protector and electric outlet

Publications (1)

Publication Number Publication Date
CN2713706Y true CN2713706Y (en) 2005-07-27

Family

ID=34872041

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420043732 Expired - Fee Related CN2713706Y (en) 2004-03-19 2004-03-19 Circuit protector and electric outlet

Country Status (1)

Country Link
CN (1) CN2713706Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130176A (en) * 2016-08-29 2016-11-16 苏州工业园区科佳自动化有限公司 A kind of band lightning protection miniature double loop power supply switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106130176A (en) * 2016-08-29 2016-11-16 苏州工业园区科佳自动化有限公司 A kind of band lightning protection miniature double loop power supply switch
CN106130176B (en) * 2016-08-29 2018-07-17 苏州工业园区科佳自动化有限公司 A kind of miniature double loop power supply switch of band lightning protection

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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: 20050727

Termination date: 20110319