CN101567510B - Novel electric leakage protection socket - Google Patents
Novel electric leakage protection socket Download PDFInfo
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- CN101567510B CN101567510B CN 200810104713 CN200810104713A CN101567510B CN 101567510 B CN101567510 B CN 101567510B CN 200810104713 CN200810104713 CN 200810104713 CN 200810104713 A CN200810104713 A CN 200810104713A CN 101567510 B CN101567510 B CN 101567510B
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Abstract
The invention discloses a novel electric leakage protection socket, which is characterized in that: input ends of a live wire and a zero line of a power supply are respectively extended with a right-angled triangular point discharge metal sheet used for discharge; and points of the two metal sheets are oppositely arranged and spaced at a certain interval. In a concrete embodiment of the invention,power input connection pieces connected with input metal sheets of the live wire and the zero line of the power supply and input terminal screws of the live wire and the zero line of the power supply are respectively extended with a point discharge metal sheet for discharge, and points of the two metal sheets are oppositely arranged and spaced at a certain interval. The live wire of the power inp ut end of the electric leakage protection socket is also connected with the zero line at the power input end through a tripping coil and a voltage dependent resistor. The novel electric leakage protection socket can prevent thunder and lightening and the damage caused by high transient voltage due to other causes, and also prevent loads connected with the electric leakage protection socket, namelyhousehold appliances such as refrigerators, color TVs, air conditioners and the like from being stricken by high voltage.
Description
Technical field
The present invention relates to a kind of new type electric leakageproof socket, espespecially a kind of new type electric leakageproof socket with anti-lightning strike function.
Background technology
Along with the development of earth leakage protective socket industry, people require more and more higher to the safety in utilization of earth leakage protective socket.Hope is in the use procedure of earth leakage protective socket, and when its internal component lost efficacy the forfeiture creepage protection function when its end-of-life, in time reminding user was changed new product.
Yet; common earth leakage protective socket in the market; not only do not have life end checking function; and; when its end-of-life, concerning the user without any prompt facility, its reset button still can reset; the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face still has power supply output, misleads the user and continues to use.When leaky occurring, this earth leakage protective socket does not have any protective effect, very easily causes the get an electric shock generation of dead accident of user.
In addition, common earth leakage protective socket does not also have anti-lightning strike function in the market.When the instantaneous pressure that atmospheric electrical phenomena or other reasons cause occurring, very easily earth leakage protective socket is caused damage.
Common earth leakage protective socket does not also have the function that stops the reverse wiring mistake in the market.When installation personnel links to each other the power firestreak in the wall, zero line mistakenly with the power output end of earth leakage protective socket; the single-phase three-wire power supply output plughole on earth leakage protective socket surface just has power supply output; and this moment; the flow through leakage protection circuit of the basic earth leakage protective socket inside of just not flowing through of electric current of power consumption equipment; so; this moment, earth leakage protective socket basic did not just play any leakage protection, if there is leaky, very easily caused the get an electric shock generation of dead accident of user.
Summary of the invention
In view of the foregoing, main purpose of the present invention provides a kind of new type electric leakageproof socket with anti-lightning strike function.When the instantaneous pressure that thunder and lightning or other reasons cause occurring, earth leakage protective socket can discharge by discharge metal sheets, and himself is protected.
Another object of the present invention provides and need not to operate any parts after a kind of power line in earth leakage protective socket power input and wall connects and just can automatically whether still have the new type electric leakageproof socket that creepage protection function detected and showed testing result to earth leakage protective socket.Homing light lights when the earth leakage protective socket inner member is intact when not having end-of-life, and expression can automatically be set up correct reset mechanism reset button and can be resetted, after resetting, homing light goes out, the power supply output indicator is bright, shows that earth leakage protective socket can work, and power supply output is arranged; When earth leakage protective socket inner member open circuit or short circuit are current leakage jack life termination; the present invention by homing light do not work to point out this earth leakage protective socket of user end-of-life and stop reset button to reset; make the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face all not have power supply output, avoid when leaky occurs because of earth leakage protective socket end-of-life but it still has power supply to export the get an electric shock generation of dead accident of the user who causes.
Another purpose of the present invention provides a kind of earth leakage protective socket that stops reverse wiring mistake function that has.When installation personnel links to each other the power firestreak in the wall, zero line mistakenly with the power output end of earth leakage protective socket; earth leakage protective socket of the present invention can stop reset button to reset, and makes the power input of earth leakage protective socket and the single-phase three-wire power supply output plughole on earth leakage protective socket surface all not have power supply output.
For achieving the above object, the present invention is by the following technical solutions: a kind of new type electric leakageproof socket, and it comprises housing, be installed in the earth leakage protective socket realized in the housing with/without the control circuit board of power supply output, power firestreak, zero line input, conductive metal sheet, power firestreak, zero line output, for detection of the differential differentiating transformer of leakage current;
Extend respectively for the point discharge sheet metal that discharges at described power firestreak, zero line input end, two discharge metal sheets tips are staggered relatively, and keep certain intervals.
Described power firestreak, zero line input end refer to input power firestreak, the zero line input wires sheet that sheet metal links to each other with power firestreak, zero line input wires screw with power firestreak, zero line; Extend respectively the described point discharge sheet metal for discharge on this power firestreak, zero line input wires sheet, the two metal sheets tip is staggered relatively, and keeps certain intervals.
Described power firestreak, zero line input end refer to power firestreak, zero line input sheet metal; Extend respectively the described point discharge sheet metal for discharge on this power firestreak, zero line input sheet metal, the two metal sheets tip is staggered relatively, and keeps certain intervals.
The rectangular triangle of described point discharge sheet metal.
The live wire of earth leakage protective socket power input links to each other with the zero line of power input through a tripping coil, a piezo-resistance.
The present invention has thunder-lightning and because the instant high-voltage that other reasons causes causes the function of damage to earth leakage protective socket.
Need not to operate any parts after the power line in power input of the present invention and the wall connects, whether the present invention just can be automatically still has creepage protection function to earth leakage protective socket is detected and shows testing result.The present invention also has the function that prevents the reverse wiring mistake.Advantage of the present invention: function is complete, uses safety, long service life.
Description of drawings
Fig. 1 is stereo decomposing structural representation of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is the front view after the present invention removes loam cake;
Fig. 4 is the annexation schematic diagram between power supply input sheet metal of the present invention, connection metal sheet and the power supply output sheet metal;
Fig. 5 is that each module position concerns schematic diagram on the circuit board of the present invention;
Fig. 6 is the present invention's mechanical device stereo decomposing structural representation that resets/trip;
Fig. 7-the 1st, the B-B partial sectional view of Fig. 3, each module position concerns schematic diagram during the output of socket initial condition non-transformer;
Fig. 7-the 2nd, the B-B partial sectional view of Fig. 3 is pressed reset button each module position of moment and is concerned schematic diagram;
Fig. 7-the 3rd, the B-B partial sectional view of Fig. 3, each module position concerned schematic diagram when the normal operation of reset button reset power socket had power supply output;
Fig. 7-the 4th, the B-B partial sectional view of Fig. 3 is pressed testing button, and reset button is threaded off, and each module position concerns schematic diagram when cutting off the electricity supply socket power output;
Fig. 8-the 1st, the C-C partial sectional view of Fig. 3, after reset button resetted, each module position concerned schematic diagram when supply socket had power supply output;
Fig. 8-the 2nd, the C-C partial sectional view of Fig. 3, reset button is threaded off, and each module position did not concern schematic diagram when supply socket had power supply output;
Fig. 9-the 1st, the A-A partial sectional view of Fig. 3, during the reset button trip status, simulation leakage current generating switch and the starting switch view that resets;
Fig. 9-the 2nd, the A-A partial sectional view of Fig. 3, the moment that reset button is pressed, simulation leakage current generating switch and the starting switch view that resets;
Fig. 9-the 3rd, the A-A partial sectional view of Fig. 3, during the reset button reset mode, simulation leakage current generating switch and the starting switch view that resets;
Figure 10 is control circuit physical circuit figure of the present invention.
Embodiment
As shown in Figure 1, new type electric leakageproof socket disclosed by the invention mainly is made of with/without the control circuit board 18 of power supply output housing, the earth leakage protective socket realized that is installed in the housing.
Described housing is combined by middle layer bracket 3 and the base 4 of loam cake 2, insulation; Between the middle layer bracket 3 of loam cake 2 and insulation, be provided with metal ground connection mounting panel 1; Between the middle layer bracket 3 that insulate and base 4, be provided with control circuit board 18.
As shown in Figure 1 and Figure 2, have power supply output plughole 5,6, reset button hole 8-A, testing button hole 7-A and status indicator lamp hole 30-A at loam cake 2.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 insulation middle layer bracket 3 and contact with assembly on the circuit board 18.Be provided with four grab 2-A in the side of loam cake 2, be used for fixing with the draw-in groove 4-B of base 4 inboards, loam cake 2 is fixed with base 4 be in the same place.
Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A, wire between the middle layer bracket 3 of loam cake 2 and insulation.On metal ground connection mounting panel 1, locate to be provided with ground connection blade 11,12 with loam cake 2 power supply output plugholes 5,6 ground hole are vertical up and down.Two ends at metal ground connection mounting panel 1 are provided with installing hole 13-B.
Such as Fig. 1, shown in Figure 3, be placed with respectively a conductive metal sheet 13,14 in the both sides of the middle layer bracket 3 that insulate.At conductive metal sheet 13,14 two ends, locate to be provided with sheet clip leaf wing 60,61,62,63 with power supply output plughole 5 on the loam cake 2,6 null line hole, live wire hole are vertical up and down.As shown in Figure 3, Figure 4, also be provided with a fixed contact 16 at an end of conductive metal sheet 14, other end riveted joint has an elastic sheet metal 21, is provided with a moving contact 23 in the end of elastic sheet metal 21.Equally, be provided with a fixed contact 15 at an end of conductive metal sheet 13, other end riveted joint has an elastic sheet metal 20, is provided with a moving contact 22 in the end of elastic sheet metal 20.
As shown in Figure 1, base 4 is used for holding middle layer bracket 3 and control circuit board 18.The bilateral symmetry of base 4 be provided with a pair of zero-power line, live wire input wires screw 9,10 and a pair of zero-power line, live wire output connection screw 109,110.
Core component of the present invention is mounted in the control circuit board 18 in the housing, the power supply output connection screw 109,110 that it has the power supply output plughole 5,6 that makes on the socket loam cake 2, base 4 both sides has/or non-transformer output and detect earth leakage protective socket whether end-of-life, show testing result, reset button resetted/or dropout, anti-lightning strike, the function that stops the reverse wiring mistake.
Such as Fig. 1, shown in Figure 5, be provided with two elasticity power firestreaks, zero line input sheet metal 51,50 at circuit board 18.Elasticity power supply input sheet metal 51, an end of 50 are bent downwardly 90 degree, passing differential differentiating transformer 19 is welded on the circuit board 18, link to each other with power firestreak, zero line input wires screw 10,9 by power supply input wires sheet 25,24, power firestreak input wires screw 10 links to each other with power firestreak in the wall by wire, and zero-power line input wires screw 9 links to each other with zero-power line in the wall by wire; Elasticity power supply input sheet metal 51,50 the other end are respectively equipped with moving contact 55 and 54.
The other end at circuit board 18 also is welded with a pair of power firestreak that contacts with power supply output connection screw 110,109, zero line output sheet metal 81,80.Be respectively equipped with a fixed contact 53,52 in power firestreak, zero line output sheet metal 81,80 end.
Such as Fig. 3, Fig. 4, shown in Figure 5, a pair of moving contact 55,54 on the elasticity power supply input sheet metal 51,50 contacts with a pair of fixed contact 16,15 on the conductive metal sheet 14,13 that is arranged on middle layer bracket 3 both sides respectively or disconnects, and consists of one group of live wire, zero line mains switch.Contact with a pair of fixed contact 53,52 on the power supply output sheet metal 81,80 with a pair of moving contact 23 on two elastic sheet metals 21,20 that conductive metal sheet 14,13 links to each other, 22 or disconnect, consist of another and organize live wire, zero line mains switch.Above-mentioned power supply input sheet metal 51,50, conductive metal sheet 14,13, elastic sheet metal 21,20 and power supply output sheet metal 81,80 on moving contact, fixed contact consist of altogether two groups of live wires, zero line mains switch 55 and 16,54 and 15,23 and 53,22 and 52, correspond respectively to the K switch R-2-1 among circuit Figure 10, KR-2-2, KR-3-1, KR-3-2.
Shown in Fig. 1, Fig. 5, Fig. 7-1, on circuit board 18, also be provided with the differential differentiating transformer 19 for detection of leakage current.As shown in figure 10, power firestreak HOT, zero line WHITE pass differential differentiating transformer 19 (L1 among the figure, L2).When leaky occurring in the current supply circuit; differential differentiating transformer will output voltage signal to leakage current test control chip IC (model is RV4145); the pin 5 output control signals of chip IC make controllable silicon (SCR) V4 conducting; make resetting on the circuit board 18/mechanical device that trips action by controllable silicon (SCR) V4; make reset button 8 reset/or thread off; earth leakage protective socket resets/or tripping operation, and earth leakage protective socket has/or the power supply output of nothing.
Shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7-1, Fig. 9-1, circuit board 18 be provided with can make elasticity power supply input sheet metal 50,51 is connected with conductive metal sheet 13,14 electric power/or disconnect and make power supply export sheet metal 80,81 charged/or the mechanical device that resets/trip that cuts off the power supply by the elastic sheet metal 20,21 that links to each other with conductive metal sheet 13,14.This mechanical device that resets/trip comprises the reset guide post 35 that is embedded in below the reset button 8, be enclosed within back-moving spring 91 on the reset guide post 35 and fast trip spring 66-A, the pad 28A that resets, " T " font release 28, snap close 30, latch spring 34, with simulation leakage current generating switch 66,67,88, the starting switch 72 that resets, 72A and the tripping coil 26 of reset button 8 interlocks.
" T " font release 28 is positioned at the below of reset button 8, with reset button 8 interlocks." T " font release 28 left and right sides stretch out and form the stair-stepping arm of carrying, and in the specific embodiment of the invention, carrying arm about it is the step-like 27A of two-stage, 28B.The pad 28A that resets is positioned at the below of reset button 8, the top of " T " font release 28.For the ease of assembling, shown in Fig. 9-1, the pad 28A that resets is shorter in length than the length that release 28 left and right sides are carried arm.Reset pad 28A and release 28 can be combined, and moves up and down with release 28; Simultaneously, resetting pad 28A again can be separated from one another with release 28.In the framework of trip coil 26K of accommodating reset pad 28A and release 28, be provided with for the restriction pad 28A positive stop 26Z of minimum removable point downwards that resets.
Shown in Fig. 9-1, when assembling release 28 and resetting pad 28A, elastic sheet metal 21,20 is placed on the top that release about 28 is carried arm outside step 28B, elasticity power supply input sheet metal 51,50 is placed on release about 28 is carried the top of arm inner side step 27A, the below of the pad 28A that resets; In release 28 and reset button 8 linkages from top to bottom band dynamic elasticity power supply input sheet metal 51,50 and elastic sheet metal 21,20 move up and down.
Have a vertical clear opening 29A that reset guide post 35 is passed in the centre of the pad 28A that resets, also have a longitudinally central perforation 29 in the centre of release 28, shown in Fig. 7-1, Fig. 9-1, the cover that is embedded in reset button 8 bottom surfaces has the reset guide post 35 of back-moving spring 91, fast trip spring 66-A to move up and down along the pad 28A that resets, release 28 middle clear opening 29A, central perforations 29.The upper section diameter of reset guide post 35 forms step 35A greater than lower section diameter between the upper and lower part; Back-moving spring 91 is enclosed within the upper part of reset guide post 35, between the middle layer bracket 3 of reset button 8 and insulation; Fast trip spring 66-A is enclosed within the lower part of reset guide post 35, at the step 35A of reset guide post 35 and reset between the pad 28A.When reset button is in trip status, reset pad 28A under the pushing of fast trip spring 66-A, reset pad 28A and release 28 are combined; Simultaneously, make moving contact 55 on the elasticity power supply input sheet metal 51,50,54 with conductive metal sheet 14,13 on fixed contact 16,15 disconnect fast, prolong the life-span of dynamic and static contact, thereby, the useful life of prolongation earth leakage protective socket.
Have a through hole 30E who runs through before and after it at the middle part of release 28, cross release 28 middle through-hole 30E and be provided with a snap close 30 of movably being made by metal material, be provided with a bonnet lock hole 31 at the end face of snap close 30.When reset button 8 is in trip status, is contained in the clear opening 29A of the pad 28A that resets, release 28 centres, the bottom surface 41 of the reset guide post 35 in the central perforation 29 and the bonnet lock holes 31 of snap close 30 end faces and is the dislocation shape.
Between the sidewall of release 28 and snap close 30 madial walls, be provided with a latch spring 34.Be provided with a tripping coil 26 that is built-in with movable core 42 in the outside of snap close 30 sidewalls, tripping coil 26 built-in movable cores 42 face the sidewall of snap close 30.Snap close 30 can transverse shifting under the effect of iron core 42, thereby makes the bottom surface 41 of the reset guide post 35 under the reset button 8 penetrate or pass in the bonnet lock hole 31 of snap close 30 end faces, and reset button 8 resets or threads off (tripping operation).Cover has turriform spring 42A in the end of movable core 42.
Shown in Fig. 6, Fig. 9-1, be provided with a simulation leakage current generating switch (the K switch R-1 among Figure 10) with reset button (RESET) 8 interlock below release 28, this simulation leakage current generating switch is the sheet metal 66,67,88 that three position shapes put by three and consists of.Sheet metal 66 is positioned at below, and in the middle of elastic sheet metal 88 was positioned at, sheet metal 67 was positioned at the top.Upper surface at sheet metal 66 is provided with a contact 68C, respectively is provided with contact 68A, a 68B on the upper and lower surface of elastic sheet metal 88, is provided with a contact 67A at the lower surface of sheet metal 67.The pad 28A that resets stretches out a haptic element 28E downwards, and this haptic element 28E is pressed on the elastic sheet metal 88.At earth leakage protective socket exact connect ion power source and when being in trip status; under the pushing of fast trip spring 66-A; the haptic element 28E that the pad 28A that resets stretches out downwards makes the contact 68B of elastic sheet metal 88 lower surfaces and the contact 68C of sheet metal 66 upper surfaces be permanently connected to conducting, shown in Fig. 9-1.When reset button 8 was pressed, shown in Fig. 9-2, the contact 68B on elastic sheet metal 88 lower surfaces still contacted conducting with the contact 68C of sheet metal 66 upper surfaces, and the starting switch 72 that resets, 72A are closed; Along with reset button from static state to the reset mode, shown in Fig. 9-3, when reset button 8 is in reset mode, release 28 moves up, the drive pad 28A that resets moves up together, the haptic element 28E that the pad 28A that resets is stretched out downwards moves apart the upper surface of elastic sheet metal 88, and elastic sheet metal 88 makes contact 68B on its lower surface and the contact 68C of sheet metal 66 upper surfaces disconnect under self elastic reaction, and the starting switch that resets disconnects; Contact 68A on elastic sheet metal 88 upper surfaces contacts conducting with contact 67A on sheet metal 67 lower surfaces.As shown in figure 10, sheet metal 66 links to each other with the zero-power line that passes differential differentiating transformer by simulation leakage current current-limiting resistance R4; Middle elastic sheet metal 88 links to each other with the live wire of ac power input end by tripping coil 26 (L3 among Figure 10); Sheet metal 67 links to each other with the zero line of power input by the controllable silicon V4 in the electric-leakage detection circuit; so; when the power input of earth leakage protective socket and the power firestreak in the wall; after zero line connects and reset button when being in trip status; under the pushing of fast trip spring 66-A; the haptic element 28E that the pad 28A that resets stretches out downwards makes the contact 68B of elastic sheet metal 88 lower surfaces and the contact 68C of sheet metal 66 upper surfaces be permanently connected to conducting; reach and need not to operate any parts of earth leakage protective socket; the live wire of power input is through tripping coil 26 (L3); sheet metal 88; sheet metal 66; simulate leakage current current-limiting resistance R4 and pass differential differentiating transformer L1; the power input zero line of L2 links to each other; formation need not to operate any parts and automatically produces simulation leakage current loop; automatically produce the simulation leakage current, detect whether end-of-life of earth leakage protective socket.If earth leakage protective socket does not have end-of-life, homing light V5 is bright, if current leakage jack life termination, earth leakage protective socket stops reset button to reset, and homing light V5 does not work.After reset button 8 resetted, sheet metal 88 disconnected with sheet metal 66, contacts conducting with sheet metal 67, the Lock-out of simulation leakage current.
In a word, when the contact 68B on elastic sheet metal 88 lower surfaces contacts with sheet metal 66 upper surface contact 68C, automatically produce the simulation leakage current, earth leakage protective socket is in detected state.When the contact 68A of elastic sheet metal 88 upper surfaces contacted with sheet metal 67 lower surface contact 67A, the simulation leakage current disappeared, and earth leakage protective device is in reset mode.
Shown in Fig. 6, Fig. 7-1, below release 28, also be provided with a starting switch that resets (KR-4 among Figure 10) that links with reset button 8.This starting switch that resets is made of elastic sheet metal 72 and electric contact 72A.One end of elastic sheet metal 72 is welded on the circuit board, and (L3 among Figure 10) links to each other with the live wire of power input by tripping coil 26; The top that the other end is unsettled, be positioned at electric contact 72A is provided with a contact 72C at itself and electric contact 72 touching positions.Electric contact 72A is welded on the circuit board, links to each other with the power input zero line by wire, controllable silicon V4.Shown in Fig. 7-1, and reset button 8 is when being in reset mode shown in Fig. 7-3 time when reset button 8 is in trip status, and elastic sheet metal 72 does not contact with contact 72A, and this starting switch that resets is in off-state; Shown in Fig. 7-2, release 28 is pressed on the elastic sheet metal 72 when reset button 8 is depressed, and makes elastic sheet metal 72 contact conducting with contact 72A, this starting switch closure that resets; Shown in Fig. 7-4, elastic sheet metal 72 and contact 72A disconnect when reset button 8 is threaded off (tripping operation), and the starting switch that resets disconnects, the state of the starting switch 72 that resets, 72A reaction reset button 8.
As shown in Figure 6, reset pad 28A, release 28, snap close 30, all place in the framework of trip coil 26K with simulation leakage current generating switch 66,67,88 and reset starting switch 72, the 72A of reset button 8 interlocks.Outside the coil of tripping coil 26, be provided with a tripping coil protective cover 41-C, be provided with four oblong aperture 80A, 81A at its end face; Respectively be provided with a hook pin 41-B who is used for hooking circuit board 18 about its side.
Consist of the mechanical device that resets/trip reset guide post 35, be enclosed within back-moving spring 91 on the reset guide post 35 and fast trip spring 66-A, the pad 28A that resets, " T " font release 28, snap close 30, the simulation leakage current generating switch 66,67,88 with reset button 8 interlocks, the starting switch 72 that resets, 72A and 26 mutual linkings of tripping coil become the freely integral body of activity, they are fitted to each other, and are indispensable.
Such as Fig. 7-1, shown in Figure 3, the present invention also is provided with below testing button 7 for the elastic sheet metal 46 that manually produces the simulation leakage current and simulation leakage current current-limiting resistance 47, and this elastic sheet metal 46 and simulation leakage current current-limiting resistance 47 (resistance R 3 among Figure 10) consist of the K switch R-5 shown in Figure 10.One end of elastic sheet metal 46 links to each other with the live wire of earth leakage protective socket power output end LOAD, and the other end is unsettled, thereunder is provided with a simulation leakage current current-limiting resistance 47; The unsettled below that is positioned at elastic sheet metal 46 of one end of simulation leakage current current-limiting resistance 47, the other end links to each other with the zero line of power input.Shown in Fig. 7-4, when pressing testing button 7 downwards, elastic sheet metal 46 contacts with simulation leakage current current-limiting resistance 47 and manually produces the simulation leakage current; Discharge testing button 7, elastic sheet metal 46 disconnects with simulation leakage current current-limiting resistance 47, and the simulation leakage current disappears.
Figure 10 is earth leakage protective socket control circuit physical circuit figure of the present invention.As shown in the figure, this control circuit is mainly by the differential differentiating transformer L1 (1000:1) for detection of leakage current; L2 (200:1); control chip IC (RV4145); be built-in with the tripping coil L3 (SOL) of iron core; controllable silicon V4; simulation leakage current generating K switch R-1 with earth leakage protective socket reset button RESET interlock; be connected in the supply line and K switch R-2-1 reset button RESET interlock; KR-2-2; KR-3-1; KR-3-2; the starting switch KR-4 that resets with reset button RESET interlock; homing light V5; power supply output indicator V3 and simulation leakage current current-limiting resistance R4; R3 and the diode that some are relevant; resistance; the compositions such as electric capacity.
After the live wire HOT of earth leakage protective socket power input LINE, zero line WHITE pass differential differentiating transformer L1, L2, by linking to each other with live wire, zero line output conduction sleeve in the single-phase three-wire power supply output plughole on K switch R-2-1, the KR-2-2 of reset button RESET interlock and earth leakage protective socket surface; Simultaneously, the output of live wire HOT, the zero line WHITE in the single-phase three-wire power supply output plughole on earth leakage protective socket surface conduction sleeve links to each other with live wire HOT, the zero line WHITE of earth leakage protective socket power output end (load link) LOAD by K switch R-3-1, the KR-3-2 of another group with reset button RESET interlock again.
The leakage current test signal output part of differential differentiating transformer L1, L2 links to each other with the signal input part 1,2,3,7 of control chip IC, and the control signal output 5 of control chip IC links to each other with the gate pole of controllable silicon V4.The working power input 6 of control chip IC links to each other with the live wire HOT of earth leakage protective socket power input LINE by diode V1, resistance R 1, tripping coil L3.The place of working pin 4 of control chip IC links to each other with the zero line WHITE of earth leakage protective socket power input LINE.
The negative electrode of controllable silicon V4 links to each other with the zero line WHITE of earth leakage protective socket power input LINE, and the anode warp of controllable silicon V4 links to each other with power input live wire HOT with the starting switch KR-4 that resets, the tripping coil L3 of the normally open of reset button RESET interlock; Simultaneously, the anode of controllable silicon V4 also links to each other with the sheet metal 67 of formation normally opened contact among the simulation leakage current generating K switch R-1.
Simulation leakage current generating K switch R-1 be one with the switch of a pair of normally-closed contact and a pair of normally opened contact, its common port A is that elastic sheet metal 88 links to each other with the live wire HOT of earth leakage protective socket power input LINE by tripping coil L3; Its normally-closed contact is that sheet metal 66 links to each other with the zero-power line WHITE that passes differential differentiating transformer L1, L2 by simulation leakage current current-limiting resistance R4; Its normally opened contact is that sheet metal 67 links to each other with the anode of controllable silicon V4.
The iron core that is built in the tripping coil L3 resets/or dropout reset button RESET by resetting in the earth leakage protective socket/mechanical device that trip; thereby make K switch R-2-1, KR-2-2, KR-3-1, KR-3-2 with reset button RESET interlock closed/or disconnect; and the disconnection of simulation leakage current generating K switch R-1 normally-closed contact/or closed, the normally opened contact closure/or disconnect.
Between the live wire of earth leakage protective socket power output end LOAD and zero line, be connected with one and be used for the power supply output indicator V3 (LED1) whether the expression earth leakage protective socket has power supply output.When earth leakage protective socket had power supply output, LED1 was bright; Otherwise LED1 does not work.
Be connected with one between the common port A of the anode B of controllable silicon V4 in leakage protection circuit and simulation leakage current generating K switch R-1 and be used for the whether homing light V5 (LED2) of end-of-life of expression earth leakage protective socket.When leakage protection circuit working properly, consist of the element of leakage protection circuit such as controllable silicon V4, tripping coil L3, differential differentiating transformer L1, L2, control chip IC is intact, controllable silicon V4 is intact can normally the time, conducting along with controllable silicon V4, homing light LED2 is bright, illustrates that earth leakage protective socket has creepage protection function; Otherwise; when leakage protection circuit can not be working properly; as one of element controllable silicon V4, tripping coil L3, differential differentiating transformer L1, L2, control chip IC of consisting of leakage protection circuit break down; when causing leakage protection circuit end-of-life forfeiture creepage protection function; because leakage protection circuit can't form the loop; homing light LED2 does not work, and shows end-of-life of leakage protection circuit, earth leakage protective socket that reminding user is in time more finished changing.
Shown in Fig. 9-1, power supply output indicator and homing light are arranged side by side on control circuit board 18, be provided with a light lead pipe 77 of vertically placing above the indicator light at two, this light lead pipe 77 passes the hole D (as shown in Figure 3) on the middle layer bracket 3, and its top is positioned at the below of the indicator lamp hole 30-A on loam cake 2 surfaces.
The power input zero line WHITE that consists of leakage current detection protection circuit of the present invention is through simulation leakage current current-limiting resistance R4, link to each other with power input live wire HOT with normally-closed contact, the tripping coil L3 (SOL) of the simulation leakage current K switch R-1 of reset button RESET interlock, and formation need not to operate any parts can produce a simulation leakage current generating circuit of simulating leakage current automatically.After the power input LINE of earth leakage protective socket and the power line in the wall connect; when reset button RESET is in trip status and does not reset; be that earth leakage protective socket is in initial condition; when reset button RESET is not pressed; owing to being in closure state with the normally-closed contact of the simulation leakage current generating K switch R-1 of reset button RESET interlock; its live wire HOT and zero line WHITE with power input directly is communicated with; produce the simulation leakage current; so; after the power input of earth leakage protective socket and the power line in the wall connect, need not to operate the above-mentioned simulation leakage current generating of any parts circuit and can automatically produce a simulation leakage current.Working properly when leakage protection circuit, detect this leakage current after, by the mechanical device that resets/trip the normally-closed contact of simulation leakage current K switch R-1 is disconnected, normally opened contact is closed, the simulation leakage current disappears, reset button RESET resets.
As shown in figure 10, when the power input of earth leakage protective socket and the power supply in the wall connect rear reset button and do not reset, because a pair of normally-closed contact of simulation leakage current generating K switch R-1 is with the live wire HOT of power input and pass differential differentiating transformer L1, the zero-power line WHITE of L2 links to each other, so, need not to operate the above-mentioned simulation leakage current generating of any parts circuit and can automatically produce the simulation leakage current, leakage current flows through differential differentiating transformer L1, L2, differential differentiating transformer L1, L2 outputs signal to control chip IC, the 5 pin output high-level control signal of control chip IC is to the gate pole of controllable silicon V4, controllable silicon V4 is triggered, positive pole and negative pole conducting, there is large electric current to flow through in the tripping coil L3, tripping coil L3 produces magnetic field, its built-in iron core action, make reset button RESET action by the mechanical device that resets/trip, reset button can reset; Simultaneously, the normally opened contact of simulation leakage current generating K switch R-1 is closed, and normally-closed contact disconnects, and the simulation leakage current disappears.
Otherwise; if leakage protection circuit can't work; current leakage jack life termination; then not conducting of controllable silicon V4; all the time there is not large electric current to flow through in the tripping coil L3; can't produce magnetic field; its inner iron core is failure to actuate; the mechanical device that resets/trip is failure to actuate all the time, and reset button can not be reset all the time, and homing light V5 does not work all the time; power supply output indicator V3 does not work yet; thereby prompting user this earth leakage protective socket is end-of-life, the earth leakage protective socket that should more finish changing.
Such as Figure 10, Fig. 7-2, shown in Fig. 9-2, when pressing reset button RESET, the normally-closed contact 68C of simulation leakage current generating K switch R-1, when 68B not yet disconnects, starting switch KR-4 and the reset button RESET interlock owing to resetting, the starting switch KR-4 that resets is closed, this moment is because the closure of KR-4 makes A point and B point short circuit, the voltage at former AB two ends is added on tripping coil (SOL) L3, making has certain electric current to flow through and produces magnetic field in the tripping coil, inner iron core is done ballistic motion, by the mechanical device that resets/trip reset button can be resetted such as Fig. 7-3, shown in Fig. 8-1; The light-emitting diode V5 that is connected between A point, B point is in cut-off state, and the V5 lamp goes out; Simultaneously, because reset button RESET action disconnects normally-closed contact 68B, 68C among the simulation leakage current K switch R-1 that links with it, normally opened contact 67A, 68A are closed, and the simulation leakage current disappears.After reset button RESET resets, the K switch R-2-1 that links with it, KR-2-2; KR-3-1, KR-3-2 is closed, and earth leakage protective socket has power supply output; V3 is bright for the power supply output indicator, shows that the single-phase three-wire jack of receptacle face and load output all have power supply output.
When the earth leakage protective socket function is intact, after earth leakage protective socket correctly accesses power supply, press reset button RESET, load end LOAD and receptacle face have electric power output, the socket normal operation.This moment is when having leakage current generating in the circuit, because power firestreak HOT and zero line WHITE pass differential differentiating transformer L1 (1000:1) and L2 (200:1) for detection of leakage current simultaneously, pass current phasor in two power lines of differential differentiating transformer L1 and L2 and non-vanishing in the circuit, the voltage signal that differential differentiating transformer L1 and L2 induce certain value at once is input to IC, output a control signal to the gate pole of controllable silicon V4 from 5 pin of IC, controllable silicon V4 is triggered, positive pole and negative pole conducting, thereby making the positive pole place B point of controllable silicon V4 is electronegative potential, because this moment, the normally opened contact of K switch R-1 was closure state, A point and B point are same point, because the other end of tripping coil L3 links to each other with power firestreak, the two ends of tripping coil L3 will obtain the voltage of certain value, there is certain electric current to flow through, produce magnetic field, its inner iron core is done ballistic motion, by the mechanical device that resets/trip reset button RESET is threaded off, the output of cutting off the electricity supply is shown in Fig. 8-2, the normally opened contact of K switch R-1 becomes off-state by closure state, power supply output indicator V3 extinguishes, and homing light V5 is bright.
When will detecting the earth leakage protective socket function when whether normal, shown in Fig. 7-4, can press testing button TEST, make the Test Switchboard KR-5 of with it interlock closed, produce the simulation leakage current, detect whether end-of-life of earth leakage protective socket.If leakage protection circuit can't work, current leakage jack life termination, then homing light V5 does not work, and reset button RESET can not reset.
In above various situations, the control signal of exporting from 5 pin of IC must through being attempted by the filtering of the anti-interference capacitor C 5 between silicon controlled gate pole and the ground, suppress the generation of false triggering.
In order to improve the useful life of earth leakage protective socket; avoid because the instantaneous pressure that thunderbolt or other reasons produce damages earth leakage protective socket; such as Figure 10, shown in Figure 5; the present invention extends respectively right angle trigonometry shape point discharge sheet metal 25A, the 24A for discharge on earth leakage protective socket and power supply input wires sheet 25,24 that power firestreak, zero line input wires screw 10,9 link to each other; the two metal sheets tip is staggered relatively, and keeps certain intervals.
Shown in Figure 10, Fig. 7-1, Fig. 8-1, the present invention also can pass right angle trigonometry shape point discharge sheet metal 51A, the 50A that extends respectively on the power firestreak of differential differentiating transformer, the zero line input sheet metal 51,50 for discharge, the two metal sheets tip is staggered relatively, and keeps certain intervals.
In addition, the live wire HOT of power input also links to each other with the zero line WHITE of power input through tripping coil SOL, a piezo-resistance MOV.
When acting on earth leakage protective socket owing to the instantaneous pressure that is struck by lightning or other reasons causes; the air dielectric that is connected to point discharge sheet metal 25A, the 51A at input live wire place and is connected between point discharge sheet metal 24A, the 50A at input zero line place is breakdown; form atmospherical discharges; most of high pressure consumes by discharge metal sheets; the residue sub-fraction consumes by tripping coil SOL, piezo-resistance MOV, thereby has protected earth leakage protective socket not broken by high pressure.
In specific embodiments of the invention, described piezo-resistance MOV selects Surge suppression type piezo-resistance, makes it can also play the effect that prevents electrophoresis.
As shown in figure 10, the present invention also has the defencive function that stops the reverse wiring mistake.As shown in the figure, link to each other by K switch R-3-1, KR-3-2 with reset button RESET interlock between the single-phase three-wire supply hub of earth leakage protective socket load output LOAD and receptacle face; The live wire of earth leakage protective socket input LINE; the live wire of the single-phase three-wire supply hub of zero line and receptacle face; between the zero line also be by with the K switch R-2-1 of reset button RESET interlock; KR-2-2 links to each other; so; when the installer links to each other the power line in the wall mistakenly with earth leakage protective socket load output LOAD; the present invention need not to operate circuit that any parts can produce the simulation leakage current automatically (by the normally-closed contact of simulation leakage current K switch R-1; resistance R 4; tripping coil SOL consists of) can't produce leakage current; control chip IC can't export control signal; not conducting of controllable silicon V5; there is not electric current to flow through in the tripping coil SOL; can't produce magnetic field and promote built-in iron core action wherein; the mechanical device that resets/trip is failure to actuate; automatically stop reset button to reset; K switch R-2-1 with reset button RESET interlock; KR-2-2; KR-3-1; KR-3-2 is in off-state all the time; can't be closed; the equal non-transformer output of the input LINE of earth leakage protective socket and the supply hub of receptacle face; homing light V5 does not work; reset button can't reset, and shows wiring error.After the erector only had wiring correct, homing light V5 was just bright, and reset button just can reset, and the earth leakage protective socket power supply just has power supply output.
In sum, because the present invention adopts above technical scheme, therefore that earth leakage protective socket disclosed by the invention has advantages of is following outstanding:
(1) after the power line in earth leakage protective socket power input and the wall connects; need not to operate any parts; just can automatically produce the simulation leakage current, detect earth leakage protective socket and whether still have the i.e. end-of-life whether of creepage protection function, and show testing result.
A. intact when the element that consists of earth leakage protective socket, when leakage protection circuit does not have end-of-life, homing light V5 is bright, expression can be set up correct reset mechanism automatically can reset reset button; After resetting, V3 is bright for the power supply output indicator, and homing light V5 extinguishes, and illustrates that earth leakage protective socket can work;
B. when the element open circuit that consists of earth leakage protective socket or short circuit are end-of-life; homing light V5 does not work; represent end-of-life of this leakage protection circuit; and stop reset button to reset; make the load output of earth leakage protective socket and the single-phase three-wire power supply output plughole of receptacle face all not have power supply output, power supply output indicator V3 does not work.
Therefore, the state that the user can pass through homing light V5, power supply output indicator V3 judge earth leakage protective socket whether end-of-life with and operating state.
(2) earth leakage protective socket long service life.
Because the present invention overlaps again a fast trip spring 66-A is arranged on reset guide post 35, when reset button is in trip status, the fast trip spring 66-A pad 28A that can promote to reset is downward, make stable elastic sheet metal 88 tops that are pressed in of the downward haptic element 28E of the pad 28A that resets, make reliable and stable contact of contact 68C on contact 68B and the sheet metal 66 on the elastic sheet metal 88, produce the simulation leakage current; After reset button resets; this fast trip spring 66-A is in confined state; when reset button trips; this fast trip spring 66-A is released; can help power supply input sheet metal 51; moving contact 55 on 50; 54 with conductive metal sheet 14; fixed contact 16 on 13; 15 separate fast; elastic sheet metal 21; moving contact 23 on 20; 22 with power supply output sheet metal 81; fixed contact 53 on 80; 53 separate fast; guarantee reliably extremely short disengaging time; thereby reduce moving; the electric arc that fixed contact produces when separating; prolong moving; in the useful life of fixed contact, make the longer service life of earth leakage protective socket.
(3), the defencive function that has the destruction that instantaneous pressure that anti-lightning strike and other reasons produces causes earth leakage protective socket.
Because the present invention is at power firestreak; the zero line input end extends respectively the right angle trigonometry shape point discharge sheet metal 25A (51A) for discharge; 24A (50A); the two metal sheets tip is staggered relatively; and maintenance certain intervals; when acting on earth leakage protective socket owing to the instantaneous pressure that is struck by lightning or other reasons causes; point discharge sheet metal 25A staggered relatively; 24A or 51A; air dielectric between the 50A is breakdown; form atmospherical discharges; most of high pressure consumes by discharge metal sheets; the residue sub-fraction is by tripping coil SOL; piezo-resistance MOV consumes; thereby protected earth leakage protective socket not broken by high pressure, and the load such as the refrigerator that link to each other with this earth leakage protective socket; TV; air-conditionings etc. are not broken by high pressure.。
(4) has manual detection and show the function of testing result.
A. produce leakage current when manually simulating, earth leakage protective socket is working properly, and when not having end-of-life, homing light V5 is bright, illustrates that earth leakage protective socket can work, and can reset, and after resetting, homing light V5 goes out, and V3 is bright for the power supply output indicator;
B. produce leakage current when manually simulating; during the leakage protection circuit end-of-life; homing light V5 does not work; end-of-life of this earth leakage protective socket is described; and stop reset button to reset; make the load output of earth leakage protective socket and the single-phase three-wire power supply output plughole of receptacle face all not have power supply output, power supply output indicator V3 does not work.
(5) has the defencive function that stops the reverse wiring mistake.
When erector or electrician are connected to the power line in the wall on the earth leakage protective socket output mistakenly; the present invention need not to operate the circuit that any parts can produce the simulation leakage current automatically can't produce leakage current; control chip IC can't produce control signal; not conducting of controllable silicon V4; there is not electric current to flow through in the tripping coil L3; can't produce magnetic field and promote built-in iron core action wherein; the mechanical device that resets/trip can't move; automatically stop reset button to reset; the output of socket non-transformer; homing light V5 does not work, and shows wiring error.After the erector only had wiring correct, homing light V5 was just bright, and reset button just can reset, and the earth leakage protective socket power output end just has power supply output, and power supply output indicator V3 is just bright.
The above is specific embodiments of the invention and the know-why used, and is any based on the equivalent transformation on the technical solution of the present invention basis, all belongs within the protection range of the present invention.
Claims (10)
1. new type electric leakageproof socket, it comprises housing, be installed in the earth leakage protective socket realized in the housing with/without the control circuit board of power supply output, power firestreak, zero line input, conductive metal sheet, power firestreak, zero line output, for detection of the differential differentiating transformer of leakage current; It is characterized in that:
Extend respectively for the point discharge sheet metal that discharges at power firestreak, zero line input end, two discharge metal sheets tips are staggered relatively, and keep certain intervals;
The rectangular triangle of described point discharge sheet metal.
2. new type electric leakageproof socket according to claim 1 is characterized in that: described power firestreak, zero line input end refer to the power firestreak, the zero line input wires sheet (25,24) that link to each other with power firestreak, zero line input wires screw (10,9) with power firestreak, zero line input sheet metal (51,50);
Extend respectively the described point discharge sheet metal (25A, 24A) for discharge on this power firestreak, zero line input wires sheet (25,24), the two metal sheets tip is staggered relatively, and keeps certain intervals.
3. new type electric leakageproof socket according to claim 1 is characterized in that: described power firestreak, zero line input end refer to power firestreak, zero line input sheet metal (51,50);
Extend respectively the described point discharge sheet metal (51A, 50A) for discharge on this power firestreak, zero line input sheet metal (51,50), the two metal sheets tip is staggered relatively, and keeps certain intervals.
4. according to claim 1 and 2 or 3 described new type electric leakageproof sockets, it is characterized in that: the live wire of earth leakage protective socket power input (HOT) links to each other with the zero line (WHITE) of power input through a tripping coil (26), a piezo-resistance (MOV).
5. new type electric leakageproof socket according to claim 4 is characterized in that: earth leakage protective socket control circuit board (18) be provided with can make described power firestreak, zero line input sheet metal (50,51) is connected with conductive metal sheet (13,14) electric power/or disconnect and by conductive metal sheet (13,14), elastic sheet metal (20,21) make power supply export sheet metal (80,81) charged/or the mechanical device that resets/trip that cuts off the power supply;
This mechanical device that resets/trip comprises the reset guide post (35) that is embedded in below the earth leakage protective socket reset button (8), is enclosed within back-moving spring (91) and fast trip spring (66-A), the pad that resets (28A), " T " font release (28), snap close (30) and tripping coil (26) on the reset guide post (35);
" T " font release (28) is positioned at the below of reset button (8), links with reset button (8); " T " font release (28) left and right sides stretches out and forms the stair-stepping arm of carrying; The pad (28A) that resets is positioned at the below of reset button (8), the top of " T " font release (28); The pad (28A) that resets can be combined with release (28), moves up and down with release (28), also can be separated from one another with release (28); In the framework of trip coil (26K) of the accommodating pad that resets (28A) and release (28), be provided with for restriction pad (28A) positive stop (26Z) of minimum removable point downwards that resets;
Power firestreak, zero line input sheet metal (51,50) are positioned at the below of the pad that resets (28A), the top of release (28); Elastic sheet metal (21,20) is positioned at the top of release (28);
Be provided with a vertical clear opening (29A) that reset guide post (35) is passed in the centre of the pad that resets (28A), also be provided with a longitudinally central perforation (29) in the centre of release (28), the cover that is embedded in reset button (8) bottom surface has the reset guide post (35) of back-moving spring (91), fast trip spring (66-A) to move up and down along the pad that resets (28A), middle clear opening (29A), the central perforation (29) of release (28);
The upper section diameter of reset guide post (35) forms step (35A) greater than lower section diameter between the upper and lower part; Back-moving spring (91) is enclosed within the upper part of reset guide post (35), is positioned between the middle layer bracket (3) of reset button (8) and insulation; Fast trip spring (66-A) is enclosed within the lower part of reset guide post (35), is positioned between the step (35A) of reset guide post (35) and the pad that resets (28A); Reset guide post (35) has the locked groove (36) of a depression near its place, bottom, the bottom surface of reset guide post (35) is plane (41);
Have a through hole (30E) that runs through its front and back at the middle part of release (28), cross release (28) middle through-hole (30E) and be provided with a snap close of movably being made by metal material (30), be provided with a bonnet lock hole (31) at the end face of snap close (30); In reset button (8) when being in trip status, the bottom surface (41) of reset guide post (35) be positioned at snap close (30) above, and be the dislocation shape with bonnet lock hole (31) on the snap close (30);
Be provided with a tripping coil (26) that is built-in with movable core (42) in the outside of snap close (30) sidewall, the built-in movable core (42) of tripping coil (26) faces the sidewall of snap close (30); Snap close (30) can transverse shifting under the effect of iron core (42), thereby make the bottom surface (41) of the reset guide post (35) under the reset button (8) penetrate or pass in the bonnet lock hole (31) of snap close (30) end face, reset button (8) resets or threads off.
6. new type electric leakageproof socket according to claim 5 is characterized in that: the described resetting/mechanical device that trips also comprises a simulation leakage current generating switch (KR-1) with reset button (8) interlock;
This simulation leakage current generating switch is positioned at the below of described release (28), and it is elastic sheet metal (66,67, the 88) formation that three position shapes are put by three;
Wherein, a sheet metal (66) is positioned at below, and in the middle of a sheet metal (88) was positioned at, a sheet metal (67) was positioned at the top; Upper surface at nethermost sheet metal (66) is provided with a contact (68C), respectively be provided with a contact (68A, 68B) on the upper and lower surface of intermediate metal film (88), be provided with a contact (67A) at the lower surface of uppermost sheet metal (67);
Described nethermost sheet metal (66) links to each other with the zero-power line that passes differential differentiating transformer by simulation leakage current current-limiting resistance (R4); Intermediate metal film (88) links to each other with the live wire of ac power input end by tripping coil (26); Topmost sheet metal (67) links to each other with the zero line of power input by the controllable silicon in the electric-leakage detection circuit;
At the power input of earth leakage protective socket and the power firestreak in the wall, zero line connect and reset button when being in trip status, the contact (68B) on intermediate metal film (88) lower surface contacts conducting with the contact (68C) of bottom sheet metal (66) upper surface; The live wire of power input links to each other with the power input zero line through tripping coil (26), intermediate metal film (88), bottom sheet metal (66), simulation leakage current current-limiting resistance (R4), consists of to need not to operate the simulation leakage current generating loop that any parts can produce the simulation leakage current automatically;
When reset button (8) when being pressed, intermediate metal film (88) upper contact (68B) still contacts with the contact (68C) of bottom sheet metal (66), continues to produce the simulation leakage current;
When reset button (8) when resetting, intermediate metal film (88) is tilted upward under the elastic reaction of himself, contact (68C) on contact on its lower surface (68B) and the bottom sheet metal (66) disconnects, contact on its upper surface (68A) contact conducting, the simulation leakage current disappearance that automatically produces with contact (67A) on the sheet metal (67) topmost.
7. new type electric leakageproof socket according to claim 6, it is characterized in that: the described pad that resets (28A) stretches out a haptic element (28E) downwards, and this haptic element (28E) is pressed on the middle elastic sheet metal (88) of described formation simulation leakage current generating switch;
At earth leakage protective socket exact connect ion power source and when being in trip status, under the pushing of described fast trip spring (66-A), the haptic element (28E) that the pad that resets (28A) stretches out downwards makes the contact (68B) of elastic sheet metal (88) lower surface and the contact (68C) of sheet metal (66) upper surface be permanently connected to conducting; When reset button (8) when being in reset mode, move up with release (28), the haptic element (28E) that the pad (28A) that resets stretches out downwards moves apart the upper surface of elastic sheet metal (88), elastic sheet metal (88) makes the contact (68C) of contact (68B) and sheet metal (66) upper surface on its lower surface disconnect under self elastic reaction, and the contact (68A) on elastic sheet metal (88) upper surface contacts conducting with contact (67A) on sheet metal (67) lower surface.
8. new type electric leakageproof socket according to claim 7 is characterized in that: the described resetting/mechanical device that trips also comprises a starting switch that resets (KR-4) with reset button (8) interlock;
This starting switch that resets is made of elastic sheet metal (72) and electric contact (72A); One end of elastic sheet metal (72) is welded on the circuit board, links to each other with the live wire of power input by tripping coil (26); The top that the other end is unsettled, be positioned at electric contact (72A) is provided with a contact (72C) at itself and electric contact (72) corresponding section; This electric contact (72A) is welded on the circuit board, links to each other with the power input zero line by wire, controllable silicon (V4);
When reset button (8) was in trip status, reset mode, this starting switch that resets was in off-state; In reset button (8) when being depressed, this starting switch closure that resets; When reset button (8) when being released, this starting switch that resets becomes off-state from closure state.
9. new type electric leakageproof socket according to claim 8 is characterized in that: described conductive metal sheet (14,13) is placed on respectively the both sides of the middle layer bracket (3) of insulation in the housing; Sheet clip leaf wing (62,63,60,61) is located to be provided with the live wire hole of case top lid (2) power source output plughole (5,6), null line hole are vertical up and down in two ends in conductive metal sheet (14,13); End at power firestreak conductive metal sheet (14) also is provided with a fixed contact (16), and other end riveted joint has a described elastic sheet metal (21), is provided with a moving contact (23) in the end of this elastic sheet metal (21); End at zero-power line conductive metal sheet (13) is provided with a fixed contact (15), and other end riveted joint has another root elastic sheet metal (20), is provided with a moving contact (22) in the end of this elastic sheet metal (20);
One end of described power firestreak, zero line input sheet metal (51,50) is bent downwardly 90 degree, passing differential differentiating transformer (19) is welded on the circuit board (18), link to each other with power firestreak, zero line input wires screw (10,9) by power supply input wires sheet (25,24), power firestreak, zero line input wires screw (10,9) link to each other with power firestreak, zero line in the wall by wire; The other end of power firestreak, zero line input sheet metal (51,50) is respectively equipped with moving contact (55,54);
One end of described power firestreak, zero line output sheet metal (81,80) is welded on the circuit board, links to each other with power supply output connection screw (110,109), and the end of the other end is respectively equipped with a fixed contact (53,52);
A pair of moving contact (55,54) on power firestreak, the zero line input sheet metal (51,50) respectively be arranged on middle layer bracket (3) on conductive metal sheet (14,13) on a pair of fixed contact (16,15) contact or disconnect, consist of one group of live wire, zero line mains switch; Contact with a pair of fixed contact (53,52) on the power supply output sheet metal (81,80) with a pair of moving contact (23,22) on two elastic sheet metals (21,20) that conductive metal sheet (14,13) links to each other or disconnect, consist of another and organize live wire, zero line mains switch;
Dynamic and static contact on above-mentioned power firestreak, zero line input sheet metal (50,51), conductive metal sheet (13,14), elastic sheet metal (20,21), the power supply output sheet metal (80,81) consists of two groups of live wires, zero line mains switch (KR-2-2 altogether, KR-3-2, KR-2-1, KR-3-1).
10. new type electric leakageproof socket according to claim 9 is characterized in that: also be provided with in the below of earth leakage protective socket testing button (7) for the elastic sheet metal (46) that manually produces the simulation leakage current and simulation leakage current current-limiting resistance (47); One end of elastic sheet metal (46) links to each other with the live wire of earth leakage protective socket power output end (LOAD), and the other end is unsettled, thereunder is provided with a simulation leakage current current-limiting resistance (47); The unsettled below that is positioned at elastic sheet metal (46) of one end of simulation leakage current current-limiting resistance (47), the other end links to each other with the zero line of power input.
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| CN 200810104713 CN101567510B (en) | 2008-04-23 | 2008-04-23 | Novel electric leakage protection socket |
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| CN 200810104713 CN101567510B (en) | 2008-04-23 | 2008-04-23 | Novel electric leakage protection socket |
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| CN101567510B true CN101567510B (en) | 2013-02-13 |
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| CN2888713Y (en) * | 2006-03-14 | 2007-04-11 | 陈明均 | Thunder/overvoltage prevention protector for electrical appliance |
| CN201194289Y (en) * | 2008-04-23 | 2009-02-11 | 黄华道 | Novel leakage protection socket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101567510A (en) | 2009-10-28 |
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