CN2585449Y

CN2585449Y - Automatic on/off switch type electric power socket

Info

Publication number: CN2585449Y
Application number: CN02291723U
Authority: CN
Inventors: 周炳生
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-16
Filing date: 2002-12-16
Publication date: 2003-11-05
Anticipated expiration: 2012-12-16

Abstract

The utility model discloses an automatic on/off switch type electric source socket which comprises a fuse and the socket. The utility model is characterized in that the utility model also comprises an isolating circuit, an electric detection circuit, a control circuit, a mechanical executive device and an electric source isolating switch. The utility model can automatically follow the load to control the on-off control of an electric source switch because the utility model is provided with the isolating circuit, the electric detection circuit, the control circuit, the mechanical executive device and the electric source isolating switch on the basis of a common electric source socket. The utility model can automatically disengage from an electric network without the load so that the socket is conveniently used, the safe factor of electric use is raised, and electric appliance are ensured free from lightning strike when the lightning strike happens but a person does not appear. The utility model brings safety for children, and simultaneously decreases the poor contact which results from the troubles of frequently inserting or pulling out the common electric source socket. The utility model has the advantages of reasonable design and safety, and is a novel electric source socket.

Description

A kind of supply socket of auto switching switch

Technical field

The utility model relates to supply socket, especially relates to a kind of supply socket of auto switching switch.

Background technology

At present, no matter whether electrical equipment uses, common power socket commonly used all communicates with electrical network all the time.In daily life and the work, particularly in thunderstorm season, often because of the people not at the scene, and attaching plug fails in time to pull away, when suffering that near electrical network or electrical network strong thunder attacks, powerful induced voltage can the breakdown potential source switch the inter-air space, seal in the machine and damage parts, the particularly electronic product of those overvoltage capabilities differences and damage especially easily.Overvoltage from closed antenna seals in also can enter television set with damages such as high-frequency tuners often through supply socket.And in uninhabited warehouse, because of aging circuit or electric wire chew because of mouse, under the effect of dust, cause and climb arc for a long time and become fire to suffer from.

Summary of the invention

The purpose of this utility model provides a kind of supply socket of auto switching switch, it automatically follow load carry out the break-make control of mains switch, when zero load, it can break away from electrical network automatically, to improve safety factor.

The purpose of this utility model is achieved in that the utility model comprises fuse and socket, and feature is also to comprise buffer circuit, electronic detection circuit, control circuit, mechanical actuating unit and power-supply isolation switch.Behind load energized switch, electronic detection circuit begins to detect its internal resistance, makes electronic detection circuit provide an of short duration power supply for mechanical actuating unit, and motor is just exported an of short duration power, promotes power-supply isolation switch and is the load power supply.After load was started working, its operating current was detected by electronic detection circuit, blocks breaking circuit simultaneously, keeps power supply state; Behind load power cutoff switch, block and remove, electronic detection circuit provides an of short duration reverse voltage for motor, and motor is just exported an of short duration reverse power, promotes power-supply isolation switch with dump.

The utility model has also designed normal open circuit, auxiliary starting circuit and auxiliary switch.

The utility model is owing to designed buffer circuit, electronic detection circuit, control circuit, mechanical actuating unit and power-supply isolation switch on the basis of common power socket, it automatically follow load carry out the break-make control of mains switch, when zero load, it can break away from electrical network automatically, it is very convenient to make that this socket uses, also improved the safety factor of electricity consumption greatly, electrical equipment exempts from thunderbolt when having guaranteed that the people is absent from the scene, concerning children, also bring safety, reduced trouble that the common power socket frequently plugs and unplugs and the loose contact that therefore causes simultaneously.Therefore the utlity model has advantage reasonable in design, that the scope of application is wide, safe and reliable, is a kind of novel supply socket.

Description of drawings

Fig. 1 is the circuit theory diagrams of embodiment 1 of the present utility model;

Fig. 2 is the structural representation of the mechanical actuating unit energized of embodiment 1;

Fig. 3 is the structural representation of the mechanical actuating unit deenergization of embodiment 1;

Fig. 4 is the circuit theory diagrams of embodiment 2 of the present utility model.

Embodiment

Embodiment 1:

The utility model comprises fuse RD and socket 1, and it also comprises buffer circuit, electronic detection circuit, control circuit, mechanical actuating unit and power-supply isolation switch ZK.

Buffer circuit is made up of miniature isolating transformer B, step-down current-limiting resistance R0, diode D1, adjustable resistance W1.One end of electrical network and the other end that gets access to grid after the primary coil of fuse RD, step-down current-limiting resistance R0, miniature isolating transformer B is connected successively, the anode of one terminating diode D1 of the secondary coil of miniature isolating transformer B, the common port of another termination capacitor C 1 negative pole and thyristor BT1 negative electrode, the negative electrode of diode D1 and the positive pole that connects capacitor C 1 after adjustable resistance W1 connects.

Electronic detection circuit is by opening testing circuit, the testing circuit of keeping power supply and turn-offing is formed, wherein open testing circuit by triode BG1, adjustable resistance W2, resistance R 1 and voltage stabilizing didoe D2 form, the negative electrode of voltage stabilizing didoe D2 is connected on the contact B2 of the switch-dividing ZK-2 of power-supply isolation switch ZK, anode be connected on the base stage of triode BG1 after resistance R 1 is connected, the control utmost point of the emitter of triode BG1 and thyristor BT1 joins, collector electrode and the anode that meets thyristor BT1 after resistance R 2 is connected, adjustable resistance W2 is connected in parallel between the base stage of the negative electrode of thyristor BT1 and triode BG1; The testing circuit of keeping power supply and turn-offing is made up of diode D7-D9, triode BG2, resistance R 7, adjustable resistance W3, the anode of the public terminating diode D7 of diode D8 negative electrode and triode BG2 emitter, the negative electrode of diode D7 connects the anode of diode D9, the negative electrode of diode D9 connects the anode of diode D8, the base stage of triode BG2 and the anode that meets diode D9 after resistance R 7 is connected, adjustable resistance W3 is connected in parallel between the base stage and emitter of triode BG2, and the collector electrode of triode BG2 connects the anode of diode D4.

Control circuit is by opening power control circuit and the power cutoff control circuit is formed, wherein opening power control circuit is made up of thyristor BT1, polar capacitor C1, capacitor C 2, motor D, this positive pole of motor D one termination capacitor C, the anode of another termination thyristor BT1 of motor D, capacitor C 2 are connected in parallel between the negative electrode of the negative electrode of thyristor BT1 and voltage stabilizing didoe D2; The power cutoff control circuit is by thyristor BT2, motor D, voltage stabilizing didoe D3, diode D4--D6, capacitor C 3, polar capacitor C4, resistance R 2--R6 and LED 1 are formed, the anode of thyristor BT2 connects the positive pole of capacitor C 1, negative electrode connects the common port of capacitor C 4 negative poles and diode D5 anode, resistance R 4 is connected in parallel between the negative electrode and the control utmost point of thyristor BT2, capacitor C 3 is in parallel with resistance R 4, the control utmost point of one termination thyristor BT2 of resistance R 3, the anode of another termination voltage stabilizing didoe D3, the negative electrode of voltage stabilizing didoe D3 connects thyristor BT1 anode, the common port of capacitor C 4 positive poles and diode D4 negative electrode, resistance R 5 is connected in parallel between the negative electrode of the anode of diode D4 and thyristor BT2, the negative electrode of LED 1 and the anode that meets diode D4 after resistance R 6 is connected, anode connects the negative electrode of diode D6.

Power-supply isolation switch ZK is a double-point double-throw switch, middle end points A1, two terminal contacts B1, C1 constitute switch-dividing ZK-1, middle end points A2, two terminal contacts B2, C2 constitute switch-dividing ZK-2, contact C1 connects the common port of fuse RD and step-down current-limiting resistance R0, contact B1 connects the anode of thyristor BT2, middle end points A1 connects the common port of diode D5 negative electrode and diode D7 anode, contact C2 connects the primary coil of miniature isolating transformer B and the common port of electrical network one end, contact B2 connects the negative electrode of voltage stabilizing didoe D2, and middle end points A2 connects the anode of diode D6.

Mechanical actuating unit is made up of motor D, worm screw 3, worm gear 4, and the intermediate sleeve of worm screw 3 is on the output shaft 2 of motor D, and worm screw 3 meshes with worm gear 4, and the dead man 6 of double-point double-throw switch ZK is arranged in the breach 7 of worm gear 4.

The utility model also comprises the normal open circuit, normal open electric routing switch CK, resistance R 8 and LED 2 are formed, the anode of the termination LED 1 of switch CK, the anode of sending and receiving optical diode LED2 after the other end is connected with resistance R 8, the negative electrode of LED 2 connects the anode of diode D9.

The utility model also comprises auxiliary starting circuit, and auxiliary starting circuit is made up of push-button switch AK and dummy resistance R9, and push-button switch AK that is cascaded and dummy resistance R9 are connected in parallel between the negative electrode of the anode of diode D6 and diode D7.

The utility model also comprises auxiliary switch 9, is processed with in the outside of worm gear 4 to pull out retaining 8 projectioies that contact 5 with the centre of auxiliary switch 9, and auxiliary switch 9 is used for finishing being switched on or switched off of other power supply or signal source as switch.

Use:

The utility model is when the initial turn-on civil power, the 220V supply voltage provides power supply through fuse RD, step-down current-limiting resistance R0 to miniature isolating transformer B, and on the secondary coil of transformer B the induction a lower voltage, this voltage charges to capacitor C 1 by adjustable resistance W1 after diode D1 rectification, other circuit does not constitute the loop, after capacitor C 1 was filled, transformer B just was in Light Condition, and the utility model also is in holding state.Plug insertion socket 1 with load L, after the mains switch fK of load L connects, voltage on the capacitor C 1 is by the positive pole of capacitor C 1, the contact B1 of switch-dividing ZK-1, the A1 end, diode D7, load L, mains switch fK is to the contact A 2 of switch-dividing ZK-2, the B2 end, voltage stabilizing didoe D2, resistance R 1, triode BG1, thyristor BT1 arrives the negative pole of capacitor C 1, triode BG1 conducting, electric current after moving big is by the positive pole of the capacitor C 1 interior resistance through motor D, resistance R 2, triode BG1, thyristor BT1 arrives the negative pole of capacitor C 1, constitute the triggering passage of thyristor BT1, thyristor BT1 triggering and conducting, capacitor C 1 is discharged to electronic device machine D, motor D just obtains an of short duration positive power, drive worm screw 3, worm gear 4 rotates, make the worm gear 4 of band breach 7 clockwise rotate an angle, and drive power-supply isolation switch ZK closes a floodgate, plug-in strip is by contact A 1-B1, A2-B2 switches to contact A 1-C1, A2-C2, cut off the triggering passage of thyristor BT1, connect civil power simultaneously, be load L power supply.

After the load L work, its operating current is flowed through by diode D7, D8, the shunt that D9 constitutes, when power supply is negative half period, electric current flow through two mutually the polyphone diode D8, D9, between two pipes, produce the voltage drop of an about 1.4V, this voltage is added in the input circuit that blocks triode BG2, form base flow through biasing resistance R7, triode BG2 saturation conduction, its collector electrode is locked in the cathode voltage of diode D4 on several volts at zero point, thereby capacitor C 4 can't obtain charging voltage, and motor D also just can't obtain Reverse Power, at this moment, circuit is also just kept power supply state.When the mains switch fK of load L disconnects, load L quits work, its operating current disappears, blockade triode BG2 loses base flow and ends, power supply is when negative half period, the other end that reaches power supply through diode D6, LED 1, resistance R 6, resistance R 5, diode D5 forms the loop, and the voltage on the resistance R 5 charges to capacitor C 4 through diode D4.When the voltage of capacitor C 4 is charged to setting height, voltage stabilizing didoe D3 is breakdown, voltage is by the positive pole of capacitor C 4, voltage stabilizing didoe D3, resistance R 3, thyristor BT2 is to the negative pole of capacitor C 4, constitute the triggering passage of thyristor BT2, thyristor BT2 triggering and conducting, capacitor C 4 is just to motor D back discharge, motor D obtains an of short duration reverse power, through mechanical speed change, worm gear 4 rotates counterclockwise an angle, promotes power-supply isolation switch ZK, and plug-in strip is by contact A 1-C1, A2-C2 switches to contact A 1-B1, A2-B2, civil power is cut off, contact A 2-B2 connects the triggering passage of thyristor BT1 once more simultaneously, but because the mains switch fK of load this moment L is disconnected, does not constitute trigger condition, so circuit enters holding state, for following task is got ready.

Open the testing process of testing circuit: after the mains switch fK of load L closes, its internal resistance is just in the place in circuit, voltage on the capacitor C 1, constitute triggering passage through two groups of contact A 1-B1, A2-B2 of power-supply isolation switch ZK, interior resistance, triode BG1 and the thyristor BT1 of load L, make thyristor BT1 trigger, capacitor C 1 just forms power by thyristor BT1 to micromotor D discharge.General pure resistive load can measure more than the 100K (internal resistance).As changing sensitivity, can adjust adjustable resistance W2.For inductive load,, be easy to detect because its D.C. resistance is less.Carry out the load of step-down for some with electric capacity,, also can form trigger impulse, make thyristor BT1 open-minded because electric capacity when energized, has the charging effect.

For adopting the electrical equipment (as fluorescent lamp) of gas discharge, because added voltage is very low when detecting, deficiency is so that the neon ionization in the fluorescent lamp starter for load L, and its resistance can not be detected.Therefore circuit can't be opened.For this reason, the utility model design has auxiliary starting circuit, and when pressing push-button switch AK, dummy resistance R9 inserts, the power supply demand working, and after the load L work, its operating current is blocked triode BG2 and detects, thereby the function that automatically shuts down is still constant.

The testing process of the testing circuit of keeping power supply and turn-offing: keeping power supply and turn-offing is the operating current that detects load L: when load L power is very little (below the 0.1W), its electric current is in tens microamperes, because shunt is the diode D8 that is in series by two, D9 constitutes, its impedance comprises two knot internal electric fields (about 1.4V), and in the input circuit of the blockade triode BG2 that is in parallel with it, has only an about 0.7V of knot electric field (emitter junction), when electric current is very little, pressure drop on the base resistance R7 is also less than 0.7V, therefore, the total impedance of blocking triode BG2 input circuit is less than shunt diode D8, the total impedance of D9, load current will all flow to the input circuit of triode BG2, make triode BG2 conducting block.When the power of continuous increase load L, its operating current also increases thereupon, voltage drop on the resistance R 7 is also along with increase, when being increased to 0.7V and when on the rise, shunt diode D8, D9 conducting, because diode forward has constant-voltage characteristic, the later electric current that increases is shunted by diode entirely, and triode BG2 input circuit electric current is by constant.Therefore, fill the power of load maximum perhaps, will depend on the size of shunt diode, irrelevant with lockout circuit.

For resistive load: the collector electrode of triode BG2 can be locked in charging voltage on several volts at zero point, load (as band transformer and motor) for the band perception, because detected electric current falls behind angle of voltage (less than л/2), and through the electric current (resistive) and voltage homophase of diode D6 to capacitor C 4 chargings.In this phase difference, charging current can not be blocked, and still to capacitor C 4 chargings, therefore, can increase gradually when the voltage on the capacitor C 4 begins, because the charge condition of electric capacity just can carry out in the time of must being higher than the voltage on the electric capacity at the instantaneous value of sinusoidal quantity.Along with the voltage on the capacitor C 4 constantly increases, its rise the electrical degree of supplementing with money also with after move, when moving on to and blocking a little phase place when identical, phase difference disappears.The voltage of electric capacity is locked on this value, and thyristor BT2 can't obtain turning-on voltage equally, and circuit is still kept load L is powered.

Normal open electric routing switch CK, resistance R 8, LED 2 are formed.In daily life, sometimes because of certain needs to need break-make load continually in (as the maintain electrical devices) short time,, reduce the wearing and tearing of mechanical perseveration simultaneously for easy to operate, at this moment, can connect Live switch CK, LED 2 is bright, and its operating current is detected, circuit blocks, device loses the ability of automatically shutting down, cut-off switch CK, functional rehabilitation.

Embodiment 2:

Embodiment 2 is basic identical with the circuit theory on embodiment ground, difference is: buffer circuit is made up of resistance R 01, R02, R03, diode D01, D02, D03, the anode of diode D01 meets the contact C1 of switch-dividing ZK-1, the negative electrode of diode D01 and the anode that meets diode D03 after resistance R 01, R02, R03 connect successively, the negative electrode of diode D03 meets the contact C2 of switch-dividing ZK-2, the anode connecting resistance R01 of diode D02, the common port of R02, negative electrode connects the positive pole of capacitor C 1.

Claims

1, a kind of supply socket of auto switching switch, comprise fuse (RD) and socket (1), it is characterized in that: also comprise buffer circuit, electronic detection circuit, control circuit, mechanical actuating unit and power-supply isolation switch (ZK), electronic detection circuit is by opening testing circuit, the testing circuit of keeping power supply and turn-offing is formed, wherein open testing circuit by triode (BG1), adjustable resistance (W2), resistance (R1) and voltage stabilizing didoe (D2) are formed, the negative electrode of voltage stabilizing didoe (D2) is connected on the contact (B2) of the switch-dividing (ZK-2) of power-supply isolation switch (ZK), anode be connected on the base stage of triode (BG1) after resistance (R1) is connected, the control utmost point of the emitter of triode (BG1) and thyristor (BT1) joins, collector electrode and the anode that meets thyristor (BT1) after resistance (R2) is connected, adjustable resistance (W2) are connected in parallel between the base stage of the negative electrode of thyristor (BT1) and triode (BG1); The testing circuit of keeping power supply and turn-offing is by diode (D7-D9), triode (BG2), resistance (R7), adjustable resistance (W3) is formed, the anode of the public terminating diode (D7) of diode (D8) negative electrode and triode (BG2) emitter, the negative electrode of diode (D7) connects the anode of diode (D9), the negative electrode of diode (D9) connects the anode of diode (D8), the base stage of triode (BG2) and the anode that meets diode (D9) after resistance (R7) is connected, adjustable resistance (W3) is connected in parallel between the base stage and emitter of triode (BG2), and the collector electrode of triode (BG2) connects the anode of diode (D4);

Control circuit is by opening power control circuit and the power cutoff control circuit is formed, wherein opening power control circuit is made up of thyristor (BT1), polar capacitor (C1), electric capacity (C2), motor (D), this positive pole of motor (D) termination capacitor (C), the anode of another termination thyristor (BT1) of motor (D), electric capacity (C2) are connected in parallel between the negative electrode of the negative electrode of thyristor (BT1) and voltage stabilizing didoe (D2); The power cutoff control circuit is by thyristor (BT2), motor (D), voltage stabilizing didoe (D3), diode (D4--D6), electric capacity (C3), polar capacitor (C4), resistance (R2-R6) and light-emitting diode (LED1) are formed, the anode of thyristor (BT2) connects the positive pole of electric capacity (C1), negative electrode connects the common port of electric capacity (C4) negative pole and diode (D5) anode, resistance (R4) is connected in parallel between the negative electrode and the control utmost point of thyristor (BT2), electric capacity (C3) is in parallel with resistance (R4), the control utmost point of one termination thyristor (BT2) of resistance (R3), the anode of another termination voltage stabilizing didoe (D3), the negative electrode of voltage stabilizing didoe (D3) connects thyristor (BT1) anode, the common port of electric capacity (C4) positive pole and diode (D4) negative electrode, resistance (R5) is connected in parallel between the negative electrode of the anode of diode (D4) and thyristor (BT2), the negative electrode of light-emitting diode (LED1) and the anode that meets diode (D4) after resistance (R6) is connected, anode connects the negative electrode of diode (D6);

Power-supply isolation switch ZK is a double-point double-throw switch, middle end points (A1), two terminal contacts (B1, C1) constitute switch-dividing (ZK-1), middle end points (A2), two terminal contacts (B2, C2) constitute switch-dividing (ZK-2), contact (C1) connects the common port of fuse (RD) and step-down current-limiting resistance (R0), contact (B1) connects the anode of thyristor (BT2), middle end points (A1) connects the common port of diode (D5) negative electrode and diode (D7) anode, contact (C2) connects the primary coil of miniature isolating transformer (B) and the common port of electrical network one end, contact (B2) connects the negative electrode of voltage stabilizing didoe (D2), and middle end points (A2) connects the anode of diode (D6);

Mechanical actuating unit is made up of motor (D), worm screw (3), worm gear (4), the intermediate sleeve of worm screw (3) is on the output shaft (2) of motor (D), worm screw (3) and worm gear (4) engagement, the dead man (6) of double-point double-throw switch (ZK) is arranged in the breach (7) of worm gear (4).

2, the supply socket of auto switching switch as claimed in claim 1 is characterized in that: buffer circuit is made up of miniature isolating transformer (B), step-down current-limiting resistance (R0), diode (D1), adjustable resistance (W1).One end of electrical network and the other end that gets access to grid after the primary coil of fuse (RD), step-down current-limiting resistance (R0), miniature isolating transformer (B) is connected successively, the anode of one terminating diode (D1) of the secondary coil of miniature isolating transformer (B), the common port of another termination capacitor (C1) negative pole and thyristor (BT1) negative electrode, the negative electrode of diode (D1) and the positive pole that meets electric capacity (C1) after adjustable resistance (W1) is connected.

3, the supply socket of auto switching switch as claimed in claim 1, it is characterized in that: buffer circuit is made up of resistance (R01, R02, R03), diode (D01, D02, D03), the anode of diode (D01) connects the contact (C1) of switch-dividing (ZK-1), the negative electrode of diode (D01) and the anode that meets diode (D03) after resistance (R01, R02, R03) is connected successively, the negative electrode of diode (D03) connects the contact (C2) of switch-dividing (ZK-2), the common port of the anode connecting resistance of diode (D02) (R01, R02), negative electrode connects the positive pole of electric capacity (C1).

4, as the supply socket of claim 2 or 3 described auto switching switches, it is characterized in that: also comprise the normal open circuit, normal open electric routing switch (CK), resistance (R8) and light-emitting diode (LED2) are formed, the anode of one termination light-emitting diode (LED1) of switch (CK), the anode of sending and receiving optical diodes (LED2) after the other end is connected with resistance (R8), the negative electrode of light-emitting diode (LED2) connects the anode of diode (D9).

5, the supply socket of auto switching switch as claimed in claim 4, it is characterized in that: also comprise auxiliary starting circuit, auxiliary starting circuit is made up of push-button switch (AK) and dummy resistance (R9), and push-button switch that is cascaded (AK) and dummy resistance (R9) are connected in parallel between the negative electrode of the anode of diode (D6) and diode (D7).

6, the supply socket of auto switching switch as claimed in claim 5 is characterized in that: also comprise auxiliary switch (9), be processed with in the outside of worm gear (4) and can pull out the projection (5) that retaining (8) contacts with the centre of auxiliary switch (9).