CN202550222U - Socket safety protection device and safety protection socket - Google Patents
Socket safety protection device and safety protection socket Download PDFInfo
- Publication number
- CN202550222U CN202550222U CN201220108064XU CN201220108064U CN202550222U CN 202550222 U CN202550222 U CN 202550222U CN 201220108064X U CN201220108064X U CN 201220108064XU CN 201220108064 U CN201220108064 U CN 201220108064U CN 202550222 U CN202550222 U CN 202550222U
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- Prior art keywords
- socket
- circuit
- chip microcomputer
- relay
- resistance
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Abstract
The utility model discloses a socket safety protection device which comprises a single chip microcomputer control circuit, a motion circuit and a current detection circuit. The single chip microcomputer control circuit comprises a single chip microcomputer, the motion circuit comprises a relay and an elastic button, the relay is connected with an output end of the single chip microcomputer, contact switches of the relay are serially connected onto a power source input line of a socket, the elastic button and the contact switches are in linkage, a first end of the current detection circuit is connected with the single chip microcomputer, a second end of the current detection circuit is connected with a working circuit through a mutual inductor, and the single chip microcomputer is used for judging whether a load is in a standby state or not according to current IA input by the current detection circuit and stopping driving the relay when the load is in the standby state. The socket safety protection device has functions of automatic outage in standby and self-locking protection in blackout to eliminate electric energy waste and thoroughly protect safety in use of household appliances. In addition, the utility model further discloses a safety protection socket using the socket safety protection device.
Description
Technical field
The utility model relates to and is used to conduct electricity the socket that connects, especially a kind of socket secure protective device, and the safeguard protection socket that uses this safety guard.
Background technology
Household electrical appliance in use tend to run into following safety problem: 1, do not use for a long time and forgotten outage, cause the long-time standby of electrical equipment, not only take electricity and also cause component aging easily, cause security incident.2, household electrical appliance have a power failure suddenly in normal course of operation, pull out appliance plug if the user forgets, incoming call back household electrical appliance can continue automatic operation again, have wasted electric energy.And often at the initial stage of restoring electricity, power quality is also unstable, phenomenons such as voltage fluctuation, surge impact often occur in the electrical network, like household electrical appliance operation automatically at this moment, causes damage easily, even causes security incident.3, because the instability of power quality, household electrical appliance in running the time regular meeting run into over-voltage condition, for example: wrong line during track remodelling, change the 220V power supply into 380V, can cause household electrical appliance to burn out like this even the initiation fire accident.
At present, more existing solve the protective device of the simple function of above-mentioned safety problem, for example overvoltage protection switch, the socket or the like that cuts off the power supply automatically.But all emergency situations that single defencive function can not effectively avoid power-supply system to occur; If the user wants above-mentioned three kinds of common situation are protected; To have to adopt three groups of protective devices; So both wasting spaces, installation connection be difficulty very again, and three groups of protective device costs are also higher.
Summary of the invention
The utility model first technical problem to be solved is, a kind of socket secure protective device is provided, and it possesses, and standby is cut off the power supply automatically, power failure self-lock protection function, to stop waste of energy, thoroughly protects the safe in utilization of household electrical appliance.
The utility model second technical problem to be solved is, a kind of safeguard protection socket that uses above-mentioned socket secure protective device is provided.
The technical scheme that above-mentioned first technical problem that solves the utility model adopts is: a kind of socket secure protective device, and its bag comprises single chip machine controlling circuit, actuating circuit and current detection circuit, said single chip machine controlling circuit comprises single-chip microcomputer; Said actuating circuit comprises relay and elastic button, and said relay is connected with the output of said single-chip microcomputer, and the contact switch of this relay is connected on the socket power incoming line, said elastic button and the interlock of said contact switch; Said current detection circuit first end is connected with single-chip microcomputer, and second end is connected with operating circuit through instrument transformer, between said current detection circuit first end and second end current amplification circuit is set; Said single-chip microcomputer is used for judging according to the electric current I A of said current detection circuit input whether load is in holding state, and when load is in holding state, stops to drive said relay.
Among embodiment, said relay has two said contact switchs therein, and these two contact switchs are connected on respectively on the live wire and zero line of socket power incoming line, and these two contact switchs interlocks.
Therein among embodiment; Said actuating circuit also comprises relay drive circuit; This relay drive circuit comprises switch triode, first resistance, second resistance and first electric capacity; The collector electrode of said switch triode is connected with an end of said relay coil; The other end of said relay coil is connected with the live wire of socket power incoming line, and the base stage of said switch triode is connected with the output of said single-chip microcomputer through first resistance, and said second resistance and said first electric capacity are connected in parallel between the base stage and collector electrode of said switch triode.
Among embodiment, said actuating circuit also comprises diode therein, and this diode is connected between the live wire of said relay coil and socket power incoming line.
Among embodiment, the input of the power supply circuits of said single chip machine controlling circuit is connected with said socket power incoming line therein.
Therein among embodiment; Said socket secure protective device also comprises overvoltage circuit; This overvoltage circuit is used for the voltage U A on the test socket power input line; And said voltage U A is input to said single-chip microcomputer, said single-chip microcomputer is used for judging whether overvoltage of supply voltage according to said voltage U A, and when the supply voltage overvoltage, stops to drive said relay.
Therein among embodiment; Said overvoltage circuit comprises transient voltage restraining diode, the 3rd resistance, the 4th resistance, second electric capacity and the 3rd electric capacity; The input of said transient voltage restraining diode is connected on the live wire of socket power incoming line; The output of said transient voltage restraining diode is connected with an end of said the 3rd resistance; The other end one tunnel of said the 3rd resistance is connected with the input of said single-chip microcomputer, and another road is through said the 4th resistance parallel with one another, said second electric capacity and said the 3rd capacity earth.
The technical scheme that above-mentioned second technical problem that solve the utility model adopts is: a kind of safeguard protection socket, it comprises jack body, in said jack body, is provided with described socket secure protective device.
Compared with prior art, the utility model has the advantages that:
Socket secure protective device that the utility model provided and safeguard protection socket have that standby is cut off the power supply automatically, power failure self-lock protection function and overvoltage power down function:
1, standby automatic circuit break function: during the household electrical appliance standby, power consumption is lower, and electric current is minimum, detects the standby current value through current detection circuit; Single-chip microcomputer judges whether electrical equipment is in holding state, and calculates stand-by time through counter, surpasses certain time length and can think that the user does not use for a long time; Then single-chip microcomputer stops the drive actions circuit, and the relay coil dead electricity is unclamped contact switch; Socket quits work, and restores electricity like need, must manually press elastic button energized once more;
2, power failure auto-lock function: jack design has an elastic button, and the back elastic button that has a power failure ejects, and restores electricity like need, must manually press elastic button ability energized, plays the effect of power-failure protecting;
3, overvoltage power down function: through the voltage of overvoltage circuit testing circuit, and feed back to single-chip microcomputer, when high voltage such as 380V appear in system; Single-chip microcomputer stops the drive actions circuit, and the relay coil dead electricity is unclamped contact switch; Socket quits work, and electrical equipment is protected.Restore electricity like need, must manually press elastic button energized once more.
This shows; Through socket secure protective device and the safeguard protection socket that the utility model provided; Can protect three types of common safety problems that occur in the household electrical appliance use, thoroughly protect the safe in utilization of household electrical appliance, and; Also possesses the long-time standby power saving function of outage automatically, to stop waste of energy.
Description of drawings
Fig. 1 is the circuit diagram of the socket secure protective device among one of them embodiment of the utility model;
Fig. 2 is the workflow diagram of the socket secure protective device among one of them embodiment of the utility model.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing:
Shown in Figure 1 is the circuit diagram of the socket secure protective device among one of them embodiment of the utility model; The socket secure protective device mainly is made up of single chip machine controlling circuit, actuating circuit 10, current detection circuit 20 and overvoltage circuit 30; Wherein, Single chip machine controlling circuit comprises single-chip microcomputer U2 and power supply circuits 40, and the input of these power supply circuits 40 is connected with zero line N with the live wire L of socket power incoming line respectively, and the output of power supply circuits 40 is connected with the power end of single-chip microcomputer U2 respectively.
Actuating circuit 10 mainly is made up of relay, relay drive circuit and elastic button 11; The relay of present embodiment has two contact switch K12, K34; These two contact switch K12, K34 are connected on respectively on the live wire L and zero line N of socket power incoming line, and these two contact switch K12, K34 interlock.The purpose that two contact switchs are set is to avoid the live wire L of socket and the live wire L and the zero line N of zero line N and power supply to connect inverse time, and safety guard also can be worked.The relay drive circuit of present embodiment is made up of switch triode Q2, resistance R 14, resistance R 15 and capacitor C 10; The collector electrode of said switch triode Q2 is connected with the end of said relay coil K1; The other end of said relay coil K1 is connected with the live wire L of socket power incoming line through diode; The base stage of said switch triode Q2 is connected with the output P1.2 of said single-chip microcomputer U2 through resistance R 14, and said resistance R 15 and said capacitor C 10 are connected in parallel between the base stage and collector electrode of said switch triode Q2.Elastic button 11 is arranged on the top of contact switch K12, K34, and with contact switch K12, K34 interlock, this elastic button 11 has back-moving spring.When pressing elastic button 11, can be with contact switch K12, K34 closure, when unclamping elastic button 11, elastic button 11 resets under the effect of back-moving spring.
Current detection circuit 20 is used for the operating current of detection equipment, and feeds back to single-chip microcomputer U2.Current detection circuit 20 first ends are connected with the input P1.1 of single-chip microcomputer, and second end is connected with operating circuit through instrument transformer 21, between current detection circuit first end and second end current amplification circuit is set.The current amplification circuit of present embodiment mainly is made up of divider resistance R23, divider resistance R24, diode D14, diode D15, capacitor C 15, voltage stabilizing didoe D6, resistance R 25 and amplifier U6.
Overvoltage circuit 30 is used for the voltage U A of testing circuit, and feeds back to single-chip microcomputer U2.Overvoltage circuit 30 is made up of transient voltage restraining diode D13, resistance R 21, resistance R 22, capacitor C 13 and capacitor C 14; The input of transient voltage restraining diode D13 is connected on the live wire L of socket power incoming line; The output of transient voltage restraining diode D13 is connected with an end of resistance R 21; The other end one tunnel of resistance R 21 is connected with the input P1.0 of said single-chip microcomputer U2, and another road is through resistance R parallel with one another 22, capacitor C 13 and capacitor C 14 ground connection.During operate as normal, overvoltage circuit 30 not conductings, the input P1.0 on the single-chip microcomputer U2 receives low level signal always; When line voltage was higher than setting threshold suddenly, the transient voltage restraining diode D13 in the overvoltage circuit 30 was punctured overvoltage circuit 30 conductings by restorability ground; Input P1.0 on the single-chip microcomputer U2 receives high level signal; Single-chip microcomputer U2 stops drive actions circuit 10, coil K1 dead electricity, trip switch; The safeguard protection socket quits work, the power consumption equipment outage.
Below in conjunction with Fig. 2 the operation principle of the socket secure protective device of present embodiment is described:
When using the safeguard protection socket of present embodiment, at first with the plug insertion socket of power consumption equipment, press the elastic button 11 in the socket, the socket secure protective device is started working.Single-chip microcomputer U2 drive actions circuit 10 work in the circuit, the coil K1 of relay is charged, and adhesive contact switch K12, K34 are kept closed contact switch K12, K34.When following situation occurring, single-chip microcomputer U2 stops drive actions circuit 10, and relay coil K1 dead electricity is unclamped contact switch K12, K34, and the safeguard protection socket quits work.
1, when socket secure protective device operate as normal, single-chip microcomputer U2 will be by the electric current I of current detection circuit 20 inputs
AWith the setting electric current I
BCompare, if electric current I
ALess than electric current I
B, single-chip microcomputer U2 internal counter picks up counting, and works as electric current I
ALess than electric current I
BTime when surpassing setting-up time N (N was generally 60 seconds), can judge that then load is in holding state, single-chip microcomputer U2 stops drive actions circuit 10, makes relay coil K1 dead electricity, thereby contact switch K12, K34 are broken off; Otherwise, if electric current I
AGreater than electric current I
B, perhaps electric current electric current I
ALess than electric current I
BTime less than setting-up time, single-chip microcomputer U2 continues 10 work of drive actions circuit.
2, when socket secure protective device operate as normal, the electrical network sudden power, relay coil K1 dead electricity is unclamped contact switch K12, K34, and the safeguard protection socket quits work.
3, when socket secure protective device operate as normal, single-chip microcomputer U2 will be by the voltage U of overvoltage circuit 30 inputs
AWith setting voltage U
BCompare, if voltage U
AGreater than voltage U
B, single-chip microcomputer U2 stops drive actions circuit 10, and relay coil K1 dead electricity is unclamped contact switch K12, K34, and the safeguard protection socket quits work, the power consumption equipment outage.
After above-mentioned three kinds of situation occurring, the safeguard protection socket quits work, and restores electricity like need, must manually press elastic button 11 energized once more.This shows; Socket secure protective device and safeguard protection socket through present embodiment; Can protect three types of common safety problems that occur in the household electrical appliance use, thoroughly protect the safe in utilization of household electrical appliance, and; Also possesses the long-time standby power saving function of outage automatically, to stop waste of energy.
More than be merely the specific embodiment of the utility model, do not limit the protection range of the utility model with this; Do not violate any replacement and the improvement of being done on the basis of the utility model design, all belonging to the protection range of the utility model.
Claims (8)
1. socket secure protective device, it is characterized in that: comprise single chip machine controlling circuit, actuating circuit and current detection circuit, said single chip machine controlling circuit comprises single-chip microcomputer; Said actuating circuit comprises relay and elastic button, and said relay is connected with the output of said single-chip microcomputer, and the contact switch of this relay is connected on the socket power incoming line, said elastic button and the interlock of said contact switch; Said current detection circuit first end is connected with single-chip microcomputer, and second end is connected with operating circuit through instrument transformer, between said current detection circuit first end and second end current amplification circuit is set; Said single-chip microcomputer is used for judging according to the electric current I A of said current detection circuit input whether load is in holding state, and when load is in holding state, stops to drive said relay.
2. socket secure protective device according to claim 1 is characterized in that: said relay has two said contact switchs, and these two contact switchs are connected on respectively on the live wire and zero line of socket power incoming line, and these two contact switch interlocks.
3. socket secure protective device according to claim 1; It is characterized in that: said actuating circuit also comprises relay drive circuit; This relay drive circuit comprises switch triode, first resistance, second resistance and first electric capacity; The collector electrode of said switch triode is connected with an end of said relay coil; The other end of said relay coil is connected with the live wire of socket power incoming line, and the base stage of said switch triode is connected with the output of said single-chip microcomputer through first resistance, and said second resistance and said first electric capacity are connected in parallel between the base stage and collector electrode of said switch triode.
4. socket secure protective device according to claim 3 is characterized in that: said actuating circuit also comprises diode, and this diode is connected between the live wire of said relay coil and socket power incoming line.
5. socket secure protective device according to claim 1 is characterized in that: the input of the power supply circuits of said single chip machine controlling circuit is connected with said socket power incoming line.
6. according to each described socket secure protective device of claim 1 to 5; It is characterized in that: also comprise overvoltage circuit; This overvoltage circuit is used for the voltage U A on the test socket power input line; And said voltage U A is input to said single-chip microcomputer, said single-chip microcomputer is used for judging whether overvoltage of supply voltage according to said voltage U A, and when the supply voltage overvoltage, stops to drive said relay.
7. socket secure protective device according to claim 6; It is characterized in that: said overvoltage circuit comprises transient voltage restraining diode, the 3rd resistance, the 4th resistance, second electric capacity and the 3rd electric capacity; The input of said transient voltage restraining diode is connected on the live wire of socket power incoming line; The output of said transient voltage restraining diode is connected with an end of said the 3rd resistance; The other end one tunnel of said the 3rd resistance is connected with the input of said single-chip microcomputer, and another road is through said the 4th resistance parallel with one another, said second electric capacity and said the 3rd capacity earth.
8. safeguard protection socket, it comprises jack body, it is characterized in that: in said jack body, be provided with like each described socket secure protective device of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220108064XU CN202550222U (en) | 2012-03-20 | 2012-03-20 | Socket safety protection device and safety protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220108064XU CN202550222U (en) | 2012-03-20 | 2012-03-20 | Socket safety protection device and safety protection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550222U true CN202550222U (en) | 2012-11-21 |
Family
ID=47170793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220108064XU Expired - Lifetime CN202550222U (en) | 2012-03-20 | 2012-03-20 | Socket safety protection device and safety protection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550222U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326191A (en) * | 2012-03-20 | 2013-09-25 | 珠海格力电器股份有限公司 | Socket safety protection device and safety protection socket |
| CN104485552A (en) * | 2014-12-26 | 2015-04-01 | 小米科技有限责任公司 | Socket on-off control method and device |
| CN111555088A (en) * | 2020-05-26 | 2020-08-18 | 广州慧洁日用品有限公司 | Safety timing switch socket for children |
-
2012
- 2012-03-20 CN CN201220108064XU patent/CN202550222U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326191A (en) * | 2012-03-20 | 2013-09-25 | 珠海格力电器股份有限公司 | Socket safety protection device and safety protection socket |
| CN103326191B (en) * | 2012-03-20 | 2016-08-10 | 珠海格力电器股份有限公司 | A kind of socket safety protector and safety protective socket |
| CN104485552A (en) * | 2014-12-26 | 2015-04-01 | 小米科技有限责任公司 | Socket on-off control method and device |
| CN104485552B (en) * | 2014-12-26 | 2017-05-03 | 小米科技有限责任公司 | Socket on-off control method and device |
| CN111555088A (en) * | 2020-05-26 | 2020-08-18 | 广州慧洁日用品有限公司 | Safety timing switch socket for children |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |