CN2613082Y - Safety protector for electric appliance - Google Patents
Safety protector for electric appliance Download PDFInfo
- Publication number
- CN2613082Y CN2613082Y CN 03246626 CN03246626U CN2613082Y CN 2613082 Y CN2613082 Y CN 2613082Y CN 03246626 CN03246626 CN 03246626 CN 03246626 U CN03246626 U CN 03246626U CN 2613082 Y CN2613082 Y CN 2613082Y
- Authority
- CN
- China
- Prior art keywords
- relay
- bridge rectifier
- output end
- full bridge
- socket
- 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
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
An electric apparatus protector relates to the electric safe technological field, comprising two power inlet wires which are connected to a power output portion of an electric apparatus socket by a protecting switch, the two power inlet wires are connected with an alternation current input end of a whole bridge rectifier circuit before going to the protection switch, the protection switch is a dynamic broken contact of a relay, one route on one end of the relay coil is connected on a direct current output end of the whole bridge rectifier circuit, and the other route is connected with the other direct current output end of the whole bridge rectifier circuit by a dynamic contact of the relay. Compared with the prior art, the utility model not only has small volume, is convenient to be equipped on a plurality kinds of electric apparatuses, but also has high working reliability, won't delay the action, is used safely, has low cost, is suitable to be equipped on a power source socket, household electric apparatus and electric instruments, and can be used in each kind of processing machine and electric apparatus devices matching with the contact.
Description
Technical field
The utility model relates to the safety technique for using electricity field, especially a kind of security appliance protector of simple in structure, reliable operation.
Background technology
Power consumption equipment or household electrical appliance electric leakage; voltage surpasses 36V and human body touches and can injure; take place for fear of tragedy; people have invented various earth leakage protective devices; (China Patent No.: 99246369.6), this technical scheme is for adopting the zero-sequence current check as " earth leakage protective socket " patent; SCR control circuit, this technical scheme can only detect the leakage current that constitutes the loop with ground wire; if electrical appliance outer casing electrification; but electric current is without ground, and earth leakage protective socket can not move, and human body touches its shell; after the electric shock; electric current imports into underground, the action of protection socket side, so; this patent is used dangerous, and it is unreliable to work.
Summary of the invention
The purpose of this utility model provides and a kind ofly can solve the Electrical Safety problem that no grounding receptacle powers, the security appliance protector that has overcurrent protection, over-voltage protecting function concurrently.
In order to address the above problem, the scheme that the utility model adopts is: include two electric power incoming lines and be connected to the part of the power output end of appliance socket by protection switch, described two electric power incoming lines are connected with the ac input end of a full bridge rectifier to described protection switch; Described protection switch is the break contact of a relay; one of this relay coil terminates at a dc output end of described full bridge rectifier; the other end of described relay coil is leaded up to a break contact of its relay and is connected with the protective grounding of described appliance socket, and another road is connected with another dc output end of described full bridge rectifier by a make contact of described relay.
Be in series with decompression capacitor between the ac input end of above-mentioned full bridge rectifier and the electric power incoming line; The dc output end of described full bridge rectifier can be in series with a reset switch between the make contact of described relay; Can be in series with the detection of electrical leakage branch road that rectifier diode constitutes in the connecting circuit of the break contact of described relay and the protective grounding of described appliance socket; Can be connected with an experiment detection branch of connecting and constituting between the power output end of described appliance socket and the protective grounding by current-limiting resistance and button switch.
The two ends of above-mentioned relay make contact can be parallel with a tongue tube, and the other solenoid of this tongue tube is connected on described protection switch between the power output end of described appliance socket.
The two ends of above-mentioned relay make contact are connected with the collector and emitter of a triode, and the base stage of this triode is connected with a dc output end of described full bridge rectifier with current-limiting resistance by a voltage stabilizing didoe.
Owing to adopted such scheme the utility model compared with prior art to have following beneficial effect:
1, functional reliability height can misoperation, and is easy to use.
2, function is many, and element is few, and cost is low.
3, can not restore electricity before fault is got rid of, after only fixing a breakdown, could be with the manual mode recovery normal power supply that resets, thereby safe in utilization.
Description of drawings
Fig. 1 is the utility model frame assumption diagram.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with the accompanying drawing example structure of the present utility model is described in further detail:
Among the embodiment shown in Figure 1, the utility model is made up of the power rectifier circuit, electric leakage, overvoltage, over-current detection circuit, control circuit and the protection switch that are contained on the circuit board.
Among the embodiment shown in Figure 2, the utility model includes two electric power incoming lines and is connected to the part of the power output end of appliance socket by protection switch J1-2, J1-3, and two electric power incoming lines are connected with the ac input end of full-bridge rectification VD1-VD4 circuit to protection switch J1-2, J1-3; Protection switch J1-2, J1-3 are the break contacts of relay J, and one of relay coil J terminates on the VD4 of full bridge rectifier; The other end of relay coil J is leaded up to the break contact J1-1 of relay J and is connected with the protective grounding of appliance socket, and another road is connected with another dc output end of full bridge rectifier VD1-VD4 by the make contact J1-1 ' of relay.Be in series with diode VD5 between the power output end of appliance socket and the protective grounding and constitute the detection of electrical leakage branch road; when the protective grounding of appliance socket when power output end produces potential difference because of electric leakage takes place; from the protective grounding of appliance socket through relay coil J; the VD3 of full bridge rectifier forms current branch between the electric power incoming line; make the relay J adhesive; relay J break contact J1-2; J1-3 disconnects; cut off the power supply of appliance socket; in addition; in the time of the relay J adhesive; the make contact J1-1 ' of relay connects the power supply that full bridge rectifier is given relay coil J; make relay J keep attracting state; when pressing reset switch FS; relay J side discharges, and this security appliance protector reenters protection garrison state.
Can be connected with one between the power output end of appliance socket and the protective grounding is connected by current-limiting resistance R3 and button switch SB and to constitute the experiment detection branch; press switch S B; equal artificial giving and impose certain leakage current, this security appliance protector is by above-mentioned principle generation earth leakage protective action.
The two ends of relay make contact J1-1 ' are parallel with a tongue tube KH, when electrical equipment electricity consumption electric current during greatly to set point, the other solenoid L of tongue tube KH produces magnetic field force, make tongue tube KH connect full bridge rectifier and give relay coil J power supply, make relay J keep attracting state, relay J break contact J1-2, J1-3 disconnect, and cut off the power supply of appliance socket; In the time of the relay J adhesive; the make contact JI-I ' of relay J connects full bridge rectifier and gives relay coil J power supply; even over-current state disappears; this security appliance protector still keeps adhesive; when pressing reset switch FS; relay J side discharges, and this security appliance protector reenters protection garrison state.
The two ends of relay J make contact JI-I ' are connected with the collector and emitter of triode V, the base stage of triode V is connected with a dc output end of full bridge rectifier with current-limiting resistance RP by voltage stabilizing didoe VD7, when the power supply supply power voltage is too high when reaching set point, voltage stabilizing didoe VD7 punctures conducting, triode V changes conducting into by ending, connect full bridge rectifier and give relay coil J power supply, make relay J keep attracting state, relay break contact J1-2, J1-3 disconnect, and cut off the power supply of appliance socket; In the time of the relay J adhesive; the make contact JI-I ' of relay connects full bridge rectifier and gives relay coil J power supply; even overvoltage condition disappears; this security appliance protector still keeps adhesive; when pressing reset switch FS; relay J side discharges, and this security appliance protector reenters protection garrison state.
Claims (4)
1, a kind of security appliance protector includes two electric power incoming lines and is connected to the part of the power output end of appliance socket by protection switch, and described two electric power incoming lines are connected with the ac input end of a full bridge rectifier to described protection switch; Described protection switch is the break contact of a relay; one of this relay coil terminates at a dc output end of described full bridge rectifier; it is characterized in that: the other end of described relay coil is leaded up to a break contact of its relay and is connected with the protective grounding of described appliance socket, and another road is connected with another dc output end of described full bridge rectifier by a make contact of described relay.
2, security appliance protector according to claim 1 is characterized in that; Be in series with decompression capacitor between the ac input end of described full bridge rectifier and the electric power incoming line; The dc output end of described full bridge rectifier is in series with a reset switch between the make contact of described relay; Be in series with the detection of electrical leakage branch road that rectifier diode constitutes in the connecting circuit of the break contact of described relay and the protective grounding of described appliance socket; Be connected with an experiment detection branch of connecting and constituting between the power output end of described appliance socket and the protective grounding by current-limiting resistance and button switch.
3, security appliance protector according to claim 1 and 2 is characterized in that; The two ends of described relay make contact are parallel with a tongue tube, and the other solenoid of this tongue tube is connected on described protection switch between the power output end of described appliance socket.
4, security appliance protector according to claim 3 is characterized in that; The two ends of described relay make contact are connected with the collector and emitter of a triode, and the base stage of this triode is connected with a dc output end of described full bridge rectifier with current-limiting resistance by a voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246626 CN2613082Y (en) | 2003-04-17 | 2003-04-17 | Safety protector for electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246626 CN2613082Y (en) | 2003-04-17 | 2003-04-17 | Safety protector for electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2613082Y true CN2613082Y (en) | 2004-04-21 |
Family
ID=34169547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03246626 Expired - Fee Related CN2613082Y (en) | 2003-04-17 | 2003-04-17 | Safety protector for electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2613082Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061036A (en) * | 2016-07-19 | 2016-10-26 | 吴建堂 | Light-controlled street lamp along with environment brightness changes |
| CN110888012A (en) * | 2019-12-11 | 2020-03-17 | 国网河南省电力公司新乡供电公司 | Lightning arrester monitoring system |
-
2003
- 2003-04-17 CN CN 03246626 patent/CN2613082Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061036A (en) * | 2016-07-19 | 2016-10-26 | 吴建堂 | Light-controlled street lamp along with environment brightness changes |
| CN110888012A (en) * | 2019-12-11 | 2020-03-17 | 国网河南省电力公司新乡供电公司 | Lightning arrester monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201590645U (en) | AC input over-voltage and under-voltage protection device for electric apparatus | |
| CN103066559B (en) | Power-off protector | |
| CN101021719A (en) | Electrical measurement-based control switch and switch control socket | |
| CN201717601U (en) | Power supply failure shunt trip and overvoltage, under-voltage protection miniature circuit breaker | |
| CN2613082Y (en) | Safety protector for electric appliance | |
| CN205583646U (en) | Earth leakage protection wall switch | |
| CN110018384B (en) | Method for detecting a ground fault condition in a power conversion device | |
| CN204012658U (en) | Distribution transformer broken neutral line protective device | |
| CN214754507U (en) | Circuit with timing function and leakage protection plug | |
| CN203243019U (en) | Power-off protector | |
| CN108306257A (en) | Three pole break-make leakage protecting plug of intelligent control type | |
| CN105021936A (en) | Method and electric device for detecting electric leakage | |
| CN202737456U (en) | Surge protection circuit | |
| CN2520063Y (en) | Thunder protector for electric net | |
| CN102064521A (en) | Overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller | |
| CN206977324U (en) | Power circuit for low-voltage circuit breaker | |
| CN202309027U (en) | Automatic time-delay reset earth leakage protector | |
| CN106681178A (en) | Intelligent power on/off control circuit and safe socket | |
| CN206962425U (en) | residual current action breaker device | |
| CN205724835U (en) | Residual current action breaker circuit | |
| CN2375021Y (en) | Overvoltage safety protector for electrical appliances | |
| CN215894899U (en) | Single-phase alternating current connection fault line detection circuit and air conditioner | |
| CN214590557U (en) | Intelligent leakage human body protection safety device | |
| CN216530536U (en) | A-type leakage protector with phase-loss protection function | |
| CN220822915U (en) | Bidirectional DC/DC control circuit system and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |