CN2829143Y - Electromagnetic earth leakage protective socket - Google Patents

Abstract

The utility model discloses an electromagnetic type leakage protection socket. The utility model is characterized in that a pair of elastic metal sheets are arranged on a circuit board in the socket, and elastic power input metal sheets are connected with socket power output metal sheets and power output conductors through the elastic metal sheets. In addition, an auxiliary electromagnetic coil with a built-in iron core is installed between a release and a differential differentiating transformer on the circuit board, an unlocking piece is riveted with an end head of the iron core and the other end of the unlocking piece is connected with a lock catch component. When the original main electromagnetic coil on the circuit board is unable to carry out normal operation due to malfunction, the auxiliary electromagnetic coil cuts off the power output of the socket. Two stop blocking pieces are fixed at the bottom of an elastic power input metal sheet on the circuit board of the utility model, and current-limiting resistors are inlaid in the stop blocking pieces. Indication lamps for alarm prompting are respectively arranged on the circuit board and a middle layer bracket, and the current-limiting resistors are connected in series with the indication lamps and form into an alarm display circuit.

Description

Electromagnetic leakage protection socket

Technical field

The utility model relates to the supply socket that a kind of electromagnetic type has creepage protection function, refers to a kind of have double magnetic circuit, prompt functions and the electromagnetic leakage protection socket of mechanical tripping function by force especially.

Background technology

Along with the continuous development of earth leakage protective socket industry, people require more and more higher to the safety in utilization of earth leakage protective socket.Hope when its end-of-life or lost defencive function or during its spare and accessory parts malfunction and failure, can in time remind the user, is changed new product in the earth leakage protective socket use.Yet, yet there are no a earth leakage protective socket in the market, when its end-of-life or when having lost defencive function, can send the alarm signal.

Whether the electromagnetic leakage protection socket that occurs on the market in addition, is normally controlled socket by the on/off electricity of controlling its internal electromagnetic coil has power supply to export.Have at earth leakage protective socket under the situation of power supply output, in case solenoid breaks down can't operate as normal the time, the user can't cut off the power supply output of the earth leakage protective socket that has broken down.

Summary of the invention

In view of the foregoing, main purpose of the present utility model provides a kind of electromagnetic leakage protection socket with double magnetic circuit, when the main electromagnetic coil of electromagnetic leakage protection socket breaks down, can cut off the power supply output of socket by another secondary solenoid.

Another purpose of the present utility model provides a kind of when current leakage jack life termination or its inner spare and accessory parts fault lose protective effect, can send the electromagnetic leakage protection socket of alarm signal.

Another purpose of the present utility model provides a kind of electromagnetic leakage protection socket with mechanical tripping function, when the assembly in the electromagnetic leakage protection socket breaks down, can cut off the power supply output of socket mechanically by force.

For achieving the above object, the utility model by the following technical solutions: a kind of electromagnetic leakage protection socket, it by housing, be installed in the socket realized in the housing and have/circuit board of unregulated power output constitutes;

The differential differentiating transformer that a pair of elasticity zero-power line, live wire input sheet metal is installed, is used to detect leakage current on described circuit board with control the release whether this elasticity zero-power line, live wire input sheet metal and socket power output conductor contact;

This release includes a main electromagnetic coil and a lock buckling part;

In described housing bottom, both sides are provided with a pair of power supply output sheet metal;

In described housing, also be provided with a pair of power supply output conductor; It is characterized in that:

One end of described elasticity zero-power line, live wire input sheet metal passes described differential differentiating transformer and links to each other with zero-power line, live wire input wires screw; The other end is respectively equipped with a pair of moving contact, this moving contact respectively be arranged on base in power supply output sheet metal on a pair of fixed contact corresponding;

Above described circuit board, both sides also are provided with two elastic sheet metals, one end of this elastic sheet metal is resisted against on the described power supply output sheet metal that is arranged in the base, the other end is provided with a pair of moving contact, this moving contact is corresponding with a pair of fixed contact on the described power supply output conductor respectively, constitutes two groups of four pairs of mains switches.

Between the bottom surface and circuit board of described release, be provided with an elasticity unlock switch of making by elastic metallic material; Whether charged the positive pole of the DC power supply of the rectification circuit output of one end of this unlock switch on resistance and circuit board links to each other, and the other end is fixed on the circuit board, control by the silicon controlled in circuit board and the described main electromagnetic coil of control generation magnetic field extremely to link to each other.

Described release is a rectangular cylinder, and its left and right sides stretches out to form and carries arm; The side that described elasticity power supply input sheet metal and elastic sheet metal are positioned at this release is carried the top of arm, and the position above moving contact on the power supply input sheet metal and the moving contact on the elastic sheet metal are carried arm in the release side is cross one another;

Equally, the opposite side that described elasticity power supply input sheet metal and elastic sheet metal are positioned at this release is carried the top of arm, and the position above moving contact on the power supply input sheet metal and the moving contact on the elastic sheet metal are carried arm in the release side also is cross one another.

The one secondary solenoid that is built-in with iron core is installed between described release and differential differentiating transformer, there is one " 1 " font to separate locking plate in the riveted joint of the termination of this iron core, this top of separating locking plate has the inclined-plane that is tilted to the right, and this other end of separating locking plate links to each other with described lock buckling part.

The coil two ends of this pair solenoid are in parallel with the coil two ends of described main electromagnetic coil.

Below described elasticity zero-power line, live wire input sheet metal moving contact, be fixed with two position-limited blocks on the circuit board, in two position-limited blocks, be embedded with current-limiting resistance; On circuit board, be welded with a red led that is used for alarm;

Described current-limiting resistance links to each other with power input live wire, zero line with red led series connection back.

Also be provided with a green indicating lamp that is used to point out power supply output on described middle layer bracket, green indicating lamp links to each other with power output end live wire, zero line with another current-limiting resistance series connection back.

Have a status indicator lamp hole on the surface of described housing; Be provided with a light lead pipe that is used to guide the output of indicator light light above described red, green indicator light, this light lead pipe is embedded in the described status indicator lamp hole.

Below described elastic sheet metal, also be fixed with a pair of position-limited block on the circuit board.

In described housing, the below of testing button, be provided with a leading truck below the test sheet metal, in leading truck, be provided with " L " type slide that a dextrorotation turn 90 degrees, the inclined-plane of scrounging and be tilted to the right in the end of the side arm that this slide extends downwards is placed with a spring between slide and middle layer bracket;

An end that is positioned at the leakage tests resistance below the described test sheet metal contacts with spring, and the other end is welded on the circuit board and links to each other with the zero line of power input;

Described dextrorotation turn 90 degrees " " side arm that the type slide extends downwards passes middle layer bracket and described " 1 " the font upper end of separating locking plate contacts for L.

Because the utility model adopts above technical scheme, makes the utility model not only have creepage protection function, and, when current leakage jack life termination, disabler, can send the alarm signal, remind the user to note, in time change socket.In addition, when certain the spare and accessory parts fault in the earth leakage protective socket, particularly when the main electromagnetic coil fault can't operate as normal, can cut off the power supply output of socket by secondary solenoid; Perhaps, push the power supply output that testing button cuts off socket mechanically by force.The utility model powerful in function, fail safe are good, safe in utilization, can guarantee user's personal safety and security appliance really.

Description of drawings

Fig. 1 is the three-dimensional decomposition texture schematic diagram of the utility model

Fig. 2 is a front view of the present utility model

Fig. 3 removes front view behind the loam cake for the utility model

Fig. 4 is that each module position concerns schematic diagram on the utility model circuit board

Fig. 5-1 is the A-A partial sectional view of Fig. 3, the normal non-transformer output state of socket figure

Fig. 5-2 is the A-A partial sectional view of Fig. 3, and socket normally has power supply output state figure

Fig. 5-3 is the A-A partial sectional view of Fig. 3, pushes testing button and makes socket non-transformer output state figure

Fig. 5-4 is the B-B partial sectional view of Fig. 3, makes socket non-transformer output state figure by secondary solenoid

Fig. 5-5 is the B-B partial sectional view of Fig. 3, pushes testing button and makes socket non-transformer output state figure mechanically by force

Fig. 6 is the C-C partial sectional view of Fig. 3, and socket has power supply output state figure

Fig. 7 is the D-D partial sectional view of Fig. 3, socket non-transformer output state figure

Fig. 8 is the utility model control circuit board physical circuit figure

Embodiment

The utility model discloses a kind of intensified multifunction electromagnetic leakage protection socket, it is number to be on the basis of 200420003413.7,200420092433.6 patent applications in application reference, increased when earth leakage protective socket inefficacy, end-of-life and can pass through light, audible alarm, reminded the user in time to change the function of new product; And when inner spare and accessory parts fault of earth leakage protective socket such as solenoid 26 faults, the user can cut off the function of socket power output by secondary solenoid; And, when the inner spare and accessory parts of earth leakage protective socket break down when all breaking down as solenoid 26 and secondary solenoid, can be by cut off the electricity supply the by force function of output of the machinery mode of threading off.

As shown in Figure 1, the disclosed earth leakage protective socket of the utility model is mainly formed by housing, the circuit board combination that is installed in the socket power the realized output/disconnection in the housing and can sends the sound and light alarm cue when the current leakage jack life termination.

Described housing is combined by loam cake 2, middle layer bracket 3 and base 4; Between loam cake 2 and middle layer bracket 3, be provided with metal ground connection mounting panel 1; Between middle layer bracket 3 and base 4, circuit board 18 is installed.

As shown in Figure 1 and Figure 2, on loam cake 2, have three phase mains output plughole 5,6, reset button hole 8-A, testing button hole 7-A and status indicator lamp hole 30-A.Be provided with reset button (RESET) 8 and testing button (TEST) 7 in reset button hole 8-A and testing button hole 7-A, reset button 8 and testing button 7 pass metal ground connection mounting panel 1 and middle layer bracket 3 and contact with assembly on the circuit board 18.Be embedded with the light lead pipe LED1 that is used to guide indicator light R, the output of G light at status indicator lamp hole 30-A, as shown in Figure 6.

Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A (as shown in Figure 1 and Figure 2), lead.On metal ground connection mounting panel 1, be provided with sheet clip leaf wing 11,12 with the ground hole corresponding section of loam cake 2 power supply output plugholes 5,6.

As Fig. 1, shown in Figure 3, a power firestreak output conductor 14 and a zero-power line output conductor 13 are installed in the both sides of middle layer bracket 3; At the two ends of power supply output conductor 13,14, be provided with sheet clip leaf wing 60,61,62,63 with live wire hole, the null line hole corresponding section of loam cake power supply output plughole 5,6.End at power supply output conductor 13,14 also is respectively equipped with alloy fixed contact 15,16.

As shown in Figure 1, base 4 is used to hold middle layer bracket 3 and circuit board 18.The bilateral symmetry of base 4 be respectively equipped with a pair of power supply input wires screw 9,10 and a pair of power supply output connection screw 109,110.In base 4, be provided with a pair of power firestreak that links to each other with power supply output connection screw 110,109, zero line output sheet metal 81,80, on power supply output sheet metal 80,81, be provided with a pair of fixed contact 52,53.

Core component of the present utility model is mounted in the circuit board 18 in the housing, and it has the power supply output plughole 5,6 that makes on the socket loam cake 2, power supply output connection screw 109,110 charged or the outage and the automatic functions that detect, handle leak current fault of base 4 both sides; The more important thing is when current leakage jack life termination or inner spare and accessory parts break down; the alarm signal can be sent and after the main electromagnetic coil fault on the circuit board, the function of socket power output can be cut off by force by secondary solenoid and mechanical system.

As Fig. 1, shown in Figure 4, this circuit board 18 is provided with two elasticity power supply input sheet metals 50,51.One end of elasticity power supply input sheet metal 50,51 is bent downwardly 90 degree, passes differential differentiating transformer 19, links to each other with zero-power line, live wire input wires screw 9,10 by input wires sheet 24,25; The other end of elasticity power supply input sheet metal 50,51 is respectively equipped with moving contact 54 and 55.This moving contact 54,55 respectively be arranged on base 4 in power supply output sheet metal 80,81 on fixed contact 52,53 (as shown in Figure 3) corresponding.Above circuit board 18, both sides also are provided with two elastic sheet metals 20,21, one end of elastic sheet metal 20,21 is resisted against on the power supply output sheet metal 80,81 that is arranged in the base 4, the other end is provided with moving contact 22,23, this moving contact 22,23 respectively with power supply output conductor 13,14 on fixed contact 15,16 corresponding (as shown in Figure 3), constitute two groups of four pairs of mains switches.

Also be provided with a differential differentiating transformer 19 that is used to detect leakage current on circuit board 18, as shown in Figure 8, power firestreak, zero line pass differential differentiating transformer 19.

As Fig. 1, Fig. 4, Fig. 5-1, shown in Figure 6, on circuit board 18, also be provided with can make elasticity power supply input sheet metal 50,51 is connected with power supply output sheet metal 80,81 electric power/or end is opened and by power supply output sheet metal 80,81 make elastic sheet metal 20,21 charged/or outage and then make power supply output conductor 13,14 electric power connection/or the release 28 of disconnection.

This release 28 is positioned at the below of reset button 8, it is a rectangular cylinder, its left and right sides stretches out to form and carries arm, and described elasticity power supply input sheet metal 50,51, elastic sheet metal 20,21 are located in the top that arm is carried in release 28 left and right sides, and can move up and down along with release 28; And, as shown in Figure 1, position above moving contact 54 on the power supply input sheet metal 50 is carried arm with the moving contact 22 on the elastic sheet metal 20 in release 28 sides is cross one another, equally, the position above the moving contact 55 on the power supply input sheet metal 51 is carried arm with the moving contact 23 on the elastic sheet metal 21 in release 28 sides also is cross one another.

Be provided with a vertical central perforation 29 at the top of release 28, the reset guide post 35 that is with back-moving spring 91 that is embedded in reset button 8 bottom surfaces can move up and down along central perforation 29.Have the locked groove 36 of a circle depression in the bottom of reset guide post 35, near its bottom.In the bottom of release 28, cross release 28 and be provided with one and movably make by metal material Type lock buckling part 30.End face at lock buckling part 30 also is provided with a perforation 31.Between the sidewall of release 28 and lock buckling part 30 inboards, be provided with a circular recess 33, be built-in with a spring 34.Be provided with a main electromagnetic coil 26 that is built-in with movable core 42 in the outside of lock buckling part 30 sidewalls, main electromagnetic coil 26 built-in movable cores 42 face the sidewall of lock buckling part 30.

As Fig. 5-1, shown in Figure 6, between the bottom surface and circuit board 18 of release 28, be provided with an elasticity unlock switch 67,68 of making by elastic metallic material.As shown in Figure 8, the positive pole of the DC power supply of the rectification circuit output of an end 67 of this unlock switch on resistance and circuit board links to each other; Its other end 68 is fixed on the circuit board, and whether charged the control of the controllable silicon SCR 1 by circuit board and control main electromagnetic coil 26 generation magnetic field extremely link to each other.When reset button 8 is pressed, drive reset guide post 35, release 28 move down, make two contacts, 67,68 closures of unlock switch, the control utmost point of controllable silicon SCR 1 gets electric, and controllable silicon SCR 1 conducting has electric current to pass through in the main electromagnetic coil 26, produce magnetic field, attract iron core 42 bump lock buckling parts 30, make it mobile, the central perforation 31 of lock buckling part 30 is passed in the bottom of reset guide post 35; Because the inertia of elasticity unlock switch 67,68, unlock switch pops up, and the two ends 67,68 of unlock switch disconnect, the control utmost point no-voltage of controllable silicon SCR 1, and controllable silicon SCR 1 not conducting, no current passes through in the coil 26, and magnetic field disappears; Spring 34 between lock buckling part 30 and the release 28 back moves lock buckling part 30; the central perforation 31 of lock buckling part 30 is slipped in the gathering sill 36; again because the release of the spring 91 on reset guide post 35 tops; driving release 28 moves up; make elasticity input sheet metal 50; moving contact 54 on 51; 55 with power supply output sheet metal 80; fixed contact 52 on 81; 53 contacts; power supply output sheet metal 80; 81 is charged; thereby; make and power supply output sheet metal 80; 81 contacted elastic sheet metals 20; 21 is charged; elastic sheet metal 20; moving contact 22 on 21; 23 with power supply output metallic conductor 13; fixed contact 15 on 14; 16 contacts; as Fig. 5-2; shown in Figure 6; realized the power supply input; the electric power of output connects, and earth leakage protective socket has power supply output.

In order to realize when current leakage jack life termination or spare and accessory parts fault lose protective effect, can sending the purpose of alarm signal; as Fig. 1, Fig. 6, shown in Figure 7; the utility model below elasticity power supply input sheet metal 50,51 moving contacts and elastic sheet metal 20,21 below; be fixed with two pairs of position-limited blocks 43,44 and 73,74 on the circuit board 18, in position-limited block 73,74, be embedded with current-limiting resistance Rj1Rj2.As Fig. 6, shown in Figure 8, on middle layer bracket 3, be provided with one and be used to point out the green indicating lamp G of power supply output, on circuit board 18, be welded with a red led R who is used for alarm.Current-limiting resistance Rj1, Rj2 link to each other with power input live wire, zero line with red led R series connection back; Green indicating lamp G links to each other with power output end live wire, zero line with current-limiting resistance Rj3 series connection back, constitutes a display circuit that is used to report to the police.For the light that green indicating lamp G and red led R are sent all sends from the status indicator lamp hole 30-A of loam cake 2, as shown in Figure 6, the utility model is provided with a light lead pipe LED1 who is used to guide indicator light R, the output of G light above indicator light R, G, and LED1 is embedded among the 30-A of status indicator lamp hole.

Earth leakage protective socket intact all just often; after earth leakage protective socket is connected in the power supply circuits; be the utility model input terminal screw 9,10 with after power input zero line, live wire link to each other; red led R shown in Fig. 8 is bright, send ruddiness, and this moment, the socket output did not have electric power output.Press reset button 8, moving contact 54,55 on the elasticity power supply input sheet metal 50,51 contacts with the fixed contact 52,53 that power supply is exported on the sheet metal 80,81, make elastic sheet metal 20,21 charged, thereby, moving contact 22,23 on the elastic sheet metal 20,21 is contacted with the fixed contact 15,16 that the power supply power supply is exported on the metallic conductor 13,14, make power supply output conductor 13,14 charged.At this moment, no current flows through, extinguishes in the red led R that is used to report to the police, and, there is electric current to flow through in the green indicating lamp G, send green glow, all are normal for the expression earth leakage protective socket, can relievedly use.

Otherwise; when the inner spare and accessory parts of socket break down, socket lost efficacy or jack life termination; when earth leakage protective socket does not have power supply output; the series loop current-limiting resistance Rj1, the Rj2 red led R that are positioned at power supply input sheet metal 50,51 moving contacts 54,55 belows have electric current to flow through all the time; red led R light yellow all the time sends ruddiness; this shows that the socket output does not have power supply output, and its input separates set with output.Wish that the user confirms once again, promptly remind the user to push reset button 8 once more, if socket can not reset all the time, green indicating lamp G does not still work, and shows that socket lost efficacy, end-of-life, the earth leakage protective socket of reminding the user in time more to renew.

As Fig. 1, shown in Figure 8, below testing button 7, be provided with a testing elastic sheet metal 40.One end of testing elastic sheet metal 40 is positioned at the below of testing button 7, and the other end links to each other with power firestreak output conductor 14.Below testing elastic sheet metal 40, be provided with a leakage tests resistance R 27, an end of leakage tests resistance R 27 be positioned at testing elastic sheet metal 40 below, the other end is welded on the circuit board and links to each other with the zero line of power input.As Fig. 8, shown in Fig. 5-3, when the user need cut off socket power output, can press testing button 7, testing elastic sheet metal 40 is linked to each other with leakage tests resistance R 27, the simulation short trouble, produce short circuit current, make the live wire 14 of short circuit current through the socket output, testing elastic sheet metal 40, leakage tests resistance R 27 is to the zero line of power input, differential differentiating transformer 19, after chip IC detects this fault, export control signal immediately, make controllable silicon SCR 1 conducting, have electric current to flow through in the main electromagnetic coil 26, produce magnetic field, make its inner iron core 42 actions, promote lock buckling part 30 and move, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 fall, and make its moving contact and power supply output sheet metal 80,81 fixed contact disconnects, and then makes and power supply output sheet metal 80,81 elastic sheet metals 20 that link to each other, 21 is not charged, power supply output conductor 13,14 is not charged yet, the output of socket non-transformer.

Working properly at earth leakage protective socket, when its each spare and accessory parts function was intact, when short trouble, leak current fault occurring, the utility model can cut off the power supply output of earth leakage protective socket by said structure.And; when the user wants to cut off socket power output, also can simulate short trouble by test sheet metal 40, test resistance R27 by pushing testing button 7; make main electromagnetic coil 26 get electric generation magnetic field, cut off the power supply output of earth leakage protective socket by said structure.

Since the utility model be by the main electromagnetic coil on the control circuit board 26 the action of release 28 is controlled in electric or outage; thereby; control elasticity power supply input sheet metal 50; whether the moving contact on 51 exports sheet metal 80 with power supply; fixed contact contact on 81; whether the control socket has power supply output; so; in order to prevent because the fault of main electromagnetic coil 26 causes the earth leakage protective socket can't operate as normal; as Fig. 1; shown in Fig. 5-1 ∽ Fig. 5-5; the utility model is on circuit board 18; the one secondary solenoid 39 that is built-in with iron core 38 is installed between release 28 and the differential differentiating transformer 19; " 1 " font is separated locking plate 37 to have one in the riveted joint of the termination of iron core 38; this top of separating locking plate has the inclined-plane that is tilted to the right, and an end of separating locking plate 37 is fixed on the lock buckling part 30 in its hole of offering 32.The coil two ends of secondary solenoid 39 are in parallel with the coil two ends of main electromagnetic coil 26.When main electromagnetic coil 26 faults can't operate as normal, as shown in Figure 8, control chip IC1 can make secondary solenoid 39 coils get, produce magnetic field, attract the iron core 38 in the secondary solenoid 39, by iron core 38 drive be attached thereto separate locking plate 37, move by separating locking plate 37 pulling lock buckling parts 30 again, thereby, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls elasticity power supply input conductor 50,51 fall, and make elasticity power supply input sheet metal 50, moving contact on 51 and power supply output sheet metal 80, fixed contact on 81 disconnects, and then make and power supply output sheet metal 80,81 elastic sheet metals 20 that link to each other, 21 is not charged, thereby, make power supply output conductor 13,14 is not charged, cuts off the power supply output of socket.

In order to prevent because the power supply that as shown in Figure 8 control circuit breaks down or major and minor solenoid 26,38 breaks down can't cut off socket output, shown in Fig. 1, Fig. 5-1 ∽ Fig. 5-5, the utility model also between metal grounding rack 1 and the middle layer bracket 3, testing button 7 below, be provided with a leading truck 64 below the test sheet metal 40, in leading truck 64, be provided with " L " type slide 65 that a dextrorotation turn 90 degrees, the end of the side arm that this slide extends downwards has the inclined-plane that is tilted to the right, and places a spring 66 between slide 65 and middle layer bracket 3.One end of leakage tests resistance R 27 contacts with spring 66, and the other end is welded on the circuit board and links to each other with the zero line of power input.In addition, shown in Fig. 5-1 ∽ Fig. 5-5, the lower end of slide 65 is passed middle layer bracket 3 and is contacted with the upper end of separating locking plate 37.When the socket control circuit breaks down or the master, secondary solenoid all breaks down in the time of can't cutting off socket power output, can exert all one's effort to press testing button 7 by force downwards, make and place testing button 7 following slides 65 to move down, the locking plate 37 separated that the other end that drives an end and 65 times end in contact of slide passes described hole 32 moves to unlocking direction, pulling lock buckling part 30, lock buckling part 30 is moved, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 fall, make its moving contact and power supply output sheet metal 80, fixed contact on 81 disconnects, and then make and power supply output sheet metal 80,81 elastic sheet metals 20 that link to each other, 21 is not charged, thereby, make power supply output conductor 13,14 is not charged, cuts off the power supply output of socket.

The utility model realize earth leakage protective, control earth leakage protective socket power input, output have/or the principle that unregulated power connects be:

As Fig. 5-1, shown in Fig. 5-2, the utility model is intact when working properly, press reset button 8, the reset guide post 35 that is attached thereto is moved down, driving release 28 moves down, make the contact 67 of flexible unlock switch, 68 contacts, main electromagnetic coil 26 is charged, produces magnetic field, attract iron core 42 bump lock buckling parts 30, make it mobile, the central perforation 31 of lock buckling part 30 is passed in the bottom of reset guide post 35, because elasticity unlock switch 67,68 inertia, unlock switch pops up, the two ends 67 of unlock switch, 68 disconnect, and no current passes through in the coil 26, and magnetic field disappears; Spring 34 between lock buckling part 30 and the release 28 back moves lock buckling part 30; the central perforation 31 of lock buckling part 30 is slipped in the gathering sill 36; again because the release of the spring 91 on reset guide post 35 tops; driving release 28 moves up; make elasticity input sheet metal 50; moving contact 54 on 51; 55 with power supply output sheet metal 80; fixed contact 52 on 81; 53 contacts; make it charged; and then; make and power supply output sheet metal 80; 81 elastic sheet metals 20 that link to each other; 21 is charged; make elastic sheet metal 20; moving contact 22 on 21; 23 with power supply output metallic conductor 13; fixed contact 15 on 14; 16 contact electrifications; shown in Fig. 5-2; realized the power supply input; the electric power of output connects, and earth leakage protective socket has power supply output.

As shown in Figure 8, after the utility model was intact, is access in the power supply circuits, red led R just began luminous.Press reset button 8, earth leakage protective socket is working properly when power supply output is arranged, and the green indicating lamp G that is used for alarm indication begins luminous, and red led R extinguishes.Push reset button 8 in any case when current leakage jack life termination, inefficacy, when the equal non-transformer of earth leakage protective socket was exported, red led R was bright all the time, and green indicating lamp G does not work, so, in case green indicating lamp G is bright, illustrate that this earth leakage protective socket is good, can relievedly use; In case push reset button 8 red led R light yellow all the time repeatedly, illustrate that it has problem, need change.

When needs cut off the output of earth leakage protective socket; shown in Fig. 5-3; only need push testing button 7 downwards; testing button 7 following testing elastic sheet metals 40 are linked to each other with leakage tests resistance R 27; the simulation short trouble; produce short circuit current; differential differentiating transformer 19; after chip IC detects this fault; export control signal immediately, make the controllable silicon SCR conducting, have electric current to flow through in the main electromagnetic coil 26; produce magnetic field; make its inner iron core 42 actions, promote lock buckling part 30 and move, reset guide post 35 is jumped out in lock buckling part 30; release 28 falls; elasticity power supply input conductor 50; 51 fall, and make its moving contact and power supply output sheet metal 80; fixed contact on 81 disconnects, and then; make and power supply output sheet metal 80; 81 elastic sheet metals 20 that link to each other; 21 is not charged; thereby, make power supply output conductor 13; 14 is not charged, cuts off the power supply output of socket.

When main electromagnetic coil 26 faults can't operate as normal, as Fig. 1, shown in Fig. 5-4, the utility model can also get by making secondary solenoid 39, the generation magnetic field suction is built in the iron core 38 in the secondary solenoid 39, the locking plate 37 of separating that iron core 38 drives are attached thereto spurs lock buckling parts 30, move it, thereby, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 fall, and make its moving contact and power supply output sheet metal 80, fixed contact on 81 disconnects, and then, make and power supply output sheet metal 80,81 elastic sheet metals 20 that link to each other, 21 is not charged, thereby, make power supply output conductor 13,14 is not charged, cuts off the power supply output of socket.

When control circuit breaks down or the master, secondary solenoid 26, when the power supply that 39 break down can't cut off socket is exported, as Fig. 1, shown in Fig. 5-5, can also exert all one's effort to push testing button 7 downwards, make and place testing button 7 following slides 65 to move down, the locking plate 37 separated that the other end that drives an end and 65 times end in contact of slide passes described hole 32 moves to unlocking direction, pulling lock buckling part 30, lock buckling part 30 is moved, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 fall, make its moving contact and power supply output sheet metal 80, fixed contact on 81 disconnects, and then makes and power supply output sheet metal 80,81 elastic sheet metals 20 that link to each other, 21 is not charged, thereby, make power supply output conductor 13,14 is not charged, cuts off the power supply output of socket.

In addition, the utility model loud speaker of can also in the alarm circuit, connecting.Sound when light shows, realize sound and light alarm, the prompting user notes.

Indulge the above, the utility model not only has creepage protection function, and, when current leakage jack life termination, disabler, can send the alarm signal, remind the user to note in time changing earth leakage protective socket.When the earth leakage protective socket main electromagnetic coil can't operate as normal, the utility model can also pass through secondary solenoid, cut off socket power output.The utility model function is strong, and fail safe is good, and good reliability can be guaranteed the safety of the person and electrical equipment.

Claims (9)

1, a kind of electromagnetic leakage protection socket, it by housing, be installed in the socket realized in the housing and have/circuit board of unregulated power output constitutes;

A pair of elasticity zero-power line, live wire input sheet metal (50,51) is installed on described circuit board (18), is used to detect the differential differentiating transformer (19) of leakage current and this elasticity zero-power line of control, live wire and imports the release (28) whether sheet metal (50,51) and socket power output conductor contact;

This release (28) includes a main electromagnetic coil (26) and a lock buckling part (30);

In described housing bottom, both sides are provided with a pair of power supply output sheet metal (80,81);

Also being provided with a pair of power supply output conductor (13,14) in described housing is characterized in that:

One end of described elasticity zero-power line, live wire input sheet metal (50,51) passes described differential differentiating transformer (19) and links to each other with zero-power line, live wire input wires screw (9,10); The other end is respectively equipped with a pair of moving contact (54,55), and a pair of fixed contact (52,53) that interior with being arranged on base (4) the respectively power supply of this moving contact (54,55) is exported on the sheet metal (80,81) is corresponding;

Above described circuit board, both sides also are provided with two elastic sheet metals (20,21), one end of this elastic sheet metal (20,21) is resisted against on the described power supply output sheet metal (80,81) that is arranged in the base (4), the other end is provided with a pair of moving contact (22,23), this moving contact (22,23) is corresponding with a pair of fixed contact (15,16) on the described power supply output conductor (13,14) respectively, constitutes two groups of four pairs of mains switches.

2, a kind of electromagnetic leakage protection socket according to claim 1 is characterized in that: between the bottom surface and circuit board (18) of described release (28), be provided with an elasticity unlock switch (67,68) of being made by elastic metallic material; One end (67) of this unlock switch links to each other through the positive pole of the DC power supply that resistance and the rectification circuit on the circuit board are exported, whether charged the other end (68) is fixed on the circuit board, extremely link to each other by the silicon controlled control of circuit board with the described main electromagnetic coil of control (26) generation magnetic field.

3, a kind of electromagnetic leakage protection socket according to claim 2, it is characterized in that: described release (28) is a rectangular cylinder, its left and right sides stretches out to form and carries arm;

The side that described elasticity power supply input sheet metal (50) and elastic sheet metal (20) are positioned at this release (28) is carried the top of arm, and the moving contact (54) on the power supply input sheet metal (50) is cross one another with the moving contact (22) on the elastic sheet metal (20) is carried the arm top in release (28) side position;

Equally, the opposite side that described elasticity power supply input sheet metal (51) and elastic sheet metal (21) are positioned at this release (28) is carried the top of arm, and the moving contact (55) on the power supply input sheet metal (51) also is cross one another with the moving contact (23) on the elastic sheet metal (21) is carried the arm top in release (28) side position.

4, a kind of electromagnetic leakage protection socket according to claim 2, it is characterized in that: a secondary solenoid (39) that is built-in with iron core (38) is installed between described release (28) and differential differentiating transformer (19), separate locking plate (37) what the riveted joint of the termination of this iron core (38) had one " a 1 " font, this top of separating locking plate has the inclined-plane that is tilted to the right, and this other end of separating locking plate (37) links to each other with described lock buckling part (30);

The coil two ends of this pair solenoid (39) are in parallel with the coil two ends of described main electromagnetic coil (26).

5, according to claim 1 or 2 or 3 or 4 described a kind of electromagnetic leakage protection sockets; it is characterized in that: in the below of described elasticity zero-power line, live wire input sheet metal (50,51) moving contact (54,55); be fixed with two position-limited blocks (73,74) on the circuit board, in two position-limited blocks (73,74), be embedded with current-limiting resistance (R _J1, R _J2); On circuit board, be welded with a red led (R) that is used for alarm;

Described current-limiting resistance (R _J1, R _J2) link to each other with power input live wire, zero line with red led (R) series connection back.

6, a kind of electromagnetic leakage protection socket according to claim 5 is characterized in that: also be provided with a green indicating lamp (G) that is used to point out power supply output on described middle layer bracket (3), green indicating lamp (G) and another current-limiting resistance (R _J3) connecting then links to each other with power output end live wire, zero line.

7, a kind of electromagnetic leakage protection socket according to claim 6 is characterized in that: have a status indicator lamp hole (30-A) on the surface of described housing;

Be provided with a light lead pipe (LED1) that is used to guide the output of indicator light light in the top of described red, green indicator light (R, G), this light lead pipe (LED1) is embedded in the described status indicator lamp hole (30-A).

8, a kind of electromagnetic leakage protection socket according to claim 5, it is characterized in that: the below in described elastic sheet metal (20,21) also is fixed with a pair of position-limited block (43,44) on the circuit board (18).

9, a kind of electromagnetic leakage protection socket according to claim 4, it is characterized in that: in described housing, the below of testing button (7), be provided with a leading truck (64) below the test sheet metal (40), in leading truck (64), be provided with " L " type slide (65) that a dextrorotation turn 90 degrees, the end of the side arm that this slide extends downwards has the inclined-plane that is tilted to the right, and is placed with a spring (66) between slide (65) and middle layer bracket (3);

An end that is positioned at the following leakage tests resistance (R27) of described test sheet metal (40) contacts with spring (66), and the other end is welded on the circuit board and links to each other with the zero line of power input;

The side arm that " L " type slide (65) that described dextrorotation turn 90 degrees extends downwards passes middle layer bracket (3) and contacts with the upper end of separating locking plate (37) of described " 1 " font.

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