CN201213179Y - Novel leakage protection socket - Google Patents
Novel leakage protection socket Download PDFInfo
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- CN201213179Y CN201213179Y CNU2008200797080U CN200820079708U CN201213179Y CN 201213179 Y CN201213179 Y CN 201213179Y CN U2008200797080 U CNU2008200797080 U CN U2008200797080U CN 200820079708 U CN200820079708 U CN 200820079708U CN 201213179 Y CN201213179 Y CN 201213179Y
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Abstract
The utility model discloses a novel creepage protection socket, which is characterized in that a mechanical reset/trip device which can cause an elastic power input sheet metal and a power output conductor, an elastic connection output sheet metal and a power output sheet metal to be charged/or powered off is arranged on a control circuit board of the creepage protection socket. The mechanical reset/trip device comprises a reset guide pole embedded at the bottom of the creepage protection socket, a reset spring and a rapid trip spring sleeved on the reset guide pole, a reset pad, a T-shaped tripper in linkage with a reset button, a locking catch, a locking catch spring and a trip coil. The reset guide pole, the reset spring and the rapid trip spring sleeved on the reset guide pole, the resetting pad, the T-shaped trip interlocked with the reset button, the locking catch, a simulative leakage current generating switch interlocked with the reset button, a reset start switch and the trip coil are mutually connected to form a freely movable integrated body, which are mutually matched and are indispensable.
Description
Technical field
The utility model relates to a kind of earth leakage protective socket, the new type electric leakageproof socket that refer to that especially a kind of long service life, working stability, reliability height, fail safe are good, has anti-lightning strike function.
The disclosed earth leakage protective socket of the utility model need not to operate any parts and just can carry out life-span stop detection and show testing result earth leakage protective socket automatically after the power line in its power input and the wall connects.
Background technology
Along with the continuous development of earth leakage protective socket industry, people are more and more higher to the safety in utilization and the requirement in useful life of earth leakage protective socket.Hope when its inner components and parts lost efficacy the forfeiture creepage protection function when its end-of-life, can in time be reminded the user in the use of earth leakage protective socket, change new product.Simultaneously, the useful life that people also wish earth leakage protective socket, the longer the better, and this also proves this earth leakage protective socket working stability, fail safe, good reliability from another point of view.
Yet; common in the market earth leakage protective socket; 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, and security reliability is poor.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 in the market earth leakage protective socket is shorter useful life.And earth leakage protective socket common on the market does not also have anti-lightning strike function.When the instantaneous pressure that atmospheric electrical phenomena or other reasons cause occurring, very easily earth leakage protective socket is caused damage.
Summary of the invention
In view of the foregoing, main purpose of the present utility model provides a kind of long service life, working stability, reliability height, new type electric leakageproof socket that fail safe is good.
Another purpose of the present utility model provides a kind of new type electric leakageproof socket, need not to operate any parts and just can be automatically whether earth leakage protective socket be still had creepage protection function and detect and show testing result after the power input of this earth leakage protective socket and the power line in the wall connect.Homing light lights when the earth leakage protective socket inner member is intact when not having end-of-life, and expression can be set up correct reset mechanism automatically, and reset button can reset, after resetting, homing light goes out, and the power supply output indicator is bright, show that earth leakage protective socket can operate as normal, power supply output is arranged; When earth leakage protective socket inner member open circuit or short circuit are current leakage jack life termination; the utility model by homing light do not work 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 utility model provides a kind of earth leakage protective socket with anti-lightning strike function.When the instantaneous pressure that thunder and lightning or other reasons cause occurring, earth leakage protective socket can be protected himself by the discharge of discharge metal sheet.
For achieving the above object, the utility model is by the following technical solutions: a kind of new type electric leakageproof socket, it comprises housing, be installed in the earth leakage protective socket realized in the housing has/control circuit board of non-transformer output, and on this control circuit board, be provided with a pair of power input, a pair of power output end, at least one pair of elastic sheet metal, be used to detect the differential differentiating transformer of leakage current;
On described control circuit board, be provided with described power input is connected with power output end electric power/or the mechanical device that resets/trip that disconnects by elastic sheet metal;
This mechanical device that resets/trip comprises the reset guide post that is embedded in below the earth leakage protective socket reset button, is enclosed within the back-moving spring on the reset guide post, the pad that resets, with " T " font release, snap close and the tripping coil of reset button interlock;
The top diameter of described reset guide post forms step greater than its underpart diameter between the upper and lower part; Back-moving spring is enclosed within the top of reset guide post, between the middle layer bracket of reset button and insulation;
Be with a fast trip spring in the lower part of described reset guide post, this fast trip spring housing is in the lower part of reset guide post, at the step of reset guide post and reset between the pad; The reset guide post has a locked groove that caves near its place, bottom, and the bottom surface of reset guide post is the plane;
Have a through hole that runs through before and after it at the middle part of release, cross release middle part through hole and be provided with a snap close of movably making, be provided with a bonnet lock hole at the end face of snap close by metal material; When reset button is in trip status, the bottom surface of reset guide post be positioned at snap close above, and be the dislocation shape with bonnet lock hole on the snap close.
After the power line in the utility model power input and the wall connects, need not to operate any parts and just can whether still have the new type electric leakageproof socket that creepage protection function detected and showed testing result to earth leakage protective socket automatically.The utility model function is complete, and is safe in utilization, long service life.
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 is the front view after the utility model removes loam cake;
Fig. 4 is the annexation schematic diagram between the utility model power input, power output end, the elastic sheet metal;
Fig. 5 is that each module position concerns schematic diagram on the utility model circuit board;
Fig. 6 is the utility model three-dimensional decomposition texture schematic diagram of mechanical device 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 pushed 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, reset button reset power socket is working properly when power supply output is arranged, and each module position concerns schematic diagram;
Fig. 7-the 4th, the B-B partial sectional view of Fig. 3 is pushed the testing button reset button and is threaded off that 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, the 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, the 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, the simulation leakage current generating switch and the starting switch view that resets;
Figure 10 is the utility model control circuit physical circuit figure.
Embodiment
As shown in Figure 1, the disclosed new type electric leakageproof socket of the utility model mainly by housing, be installed in the earth leakage protective socket realized in the housing and have/control circuit board 18 of non-transformer output constitutes.
Described housing is combined by the 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 middle layer bracket 3 that insulate and base 4, be provided with control circuit board 18.
As shown in Figure 1 and Figure 2, on loam cake 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.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, loam cake 2 is fixed with base 4 be in the same place with the draw-in groove 4-B of base 4 inboards.
Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A, lead between the middle layer bracket 3 of loam cake 2 and insulation.On metal ground connection mounting panel 1, should locate to be provided with ground connection blade 11,12 with the ground hole of loam cake 2 power supply output plugholes 5,6 is up and down vertical opposite.Two ends at metal ground connection mounting panel 1 are provided with installing hole 13-B.
As Fig. 1, shown in Figure 3, be placed with a conductive metal sheet 14 and 13 respectively in the both sides of the middle layer bracket 3 that insulate.At the two ends of conductive metal sheet 13,14, should locate to be provided with sheet clip leaf wing 60,61,62,63 with null line hole, the live wire hole of loam cake 2 power supply output plugholes 5,6 are up and down vertical opposite.As shown in Figure 3, Figure 4, an end of a conductive metal sheet 14 also is provided with a fixed contact 16 therein, and 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 another root 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 to hold 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 utility model 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, make reset button reliably, stably reset/or dropout, anti-lightning strike function.
As Fig. 1, shown in Figure 5, on circuit board 18, be provided with two elasticity power firestreaks, zero line input 51,50.One end of power input 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 input wires screw 10 links to each other with power firestreak in the wall by lead, and zero-power line input wires screw 9 links to each other with zero-power line in the wall by lead; The other end of power input 51,50 is 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 81,80.End at power firestreak, zero line output 81,80 is respectively equipped with a fixed contact 53,52.
As Fig. 3, Fig. 4, shown in Figure 5, a pair of moving contact 55,54 on the elasticity power input 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 constitutes one group of live wire, zero line mains switch.Contact with a pair of fixed contact 53,52 on the power output end 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, constitute another and organize live wire, zero line mains switch.Moving contact, fixed contact on above-mentioned power input 51,50, conductive metal sheet 14,13, elastic sheet metal 21,20 and the power output end 81,80 constitutes two groups of four pairs of live wires, zero line mains switch 55 and 16,54 and 15,23 and 53,22 and 52 altogether, 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 that is used to detect 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 detect control chip IC (model is RV4145) to leakage current by output voltage signal; 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 has/or non-transformer output.
Shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7-1, Fig. 9-1, on circuit board 18, be provided with can make power input 50,51 be connected with conductive metal sheet 13,14 electric power/or disconnect and by the elastic sheet metal 20,21 that links to each other with conductive metal sheet 13,14 make power output end 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 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 with reset button 8 interlocks, snap close 30, 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 to form and carry arm, and the pad 28A that resets is positioned at the below of reset button 8, the top of " T " font release 28.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 ccontaining reset pad 28A and release 28, be provided with and be used to limit the 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, power input 50,51, elastic sheet metal 20,21 are placed on the top that release about 28 is carried arm respectively, the reset below of pad 28A makes power input 50,51 carry arm and reset between the pad 28A at release about 28. Drive power input 51,50 and elastic sheet metal 21,20 move up and down in release 28 and reset button 8 linkages from top to bottom.
Be provided with a vertical clear opening 29A that reset guide post 35 is passed in the centre of the pad 28A that resets, also be provided with a central perforation longitudinally 29 in the centre of release 28, shown in Fig. 7-1, Fig. 9-1, the reset guide post 35 that is with back-moving spring 91, fast trip spring 66-A that is embedded in reset button 8 bottom surfaces can move up and down along clear opening 29A, the central perforation 29 in the middle of the pad 28A that resets, the release 28.The top diameter of reset guide post 35 forms step 35A greater than its underpart diameter between the upper and lower part; Back-moving spring 91 is enclosed within the top of reset guide post 35, between the middle layer bracket 3 of reset button 8 and insulation; Be with a fast trip spring 66-A in the lower part of reset guide post 35, this fast trip spring 66-A is at the step 35A of reset guide post 35 and reset between the pad 28A.This fast trip spring 66-A can make reset button 8 quickly and reliably thread off, and prolongs the useful life of earth leakage protective socket greatly.
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; Reset when reset button is pressed pad 28A and release 28 is separated from one another.
Shown in Fig. 7-1, reset guide post 35 has a locked groove 36 that caves near its place, bottom, and the bottom surface of reset guide post 35 is plane 41, when reset button 8 is in trip status, the bottom surface 41 of reset guide post 35 be positioned at snap close 30 above, and with snap close 30 on bonnet lock hole 31 dislocation.
Have a through hole 30E who runs through before and after it at the middle part of release 28, cross release 28 middle part through hole 30E and be provided with a snap close 30 of movably making, be provided with a bonnet lock hole 31 at the end face of snap close 30 by metal material.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 snap close 30.Snap close 30 can laterally move 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).Be with 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 elastic sheet metal 66,67,88 that triangular shape puts by three and constitutes.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.In correctly Connect Power source and when being in trip status of earth leakage protective socket; 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 also contacted conducting with the contact 68C of sheet metal 66 upper surfaces; 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, elastic sheet metal 88 makes the contact 68B on its lower surface and the contact 68C of sheet metal 66 upper surfaces disconnect under self elastic reaction, and the 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 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; zero line connects back 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 produces simulation leakage current loop automatically; 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, produce the simulation leakage current automatically, 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 corresponding sections.Electric contact 72A is welded on the circuit board, links to each other by the anode of lead with 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 released, and the starting switch that resets disconnects, thus the state of 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, on its end face, be provided with four oblong aperture 80A, 81A; Respectively be provided with a hook pin 41-B who is used to hook the hole on the circuit board 18 about its side.Be provided with the step 41-F that is used to hold elasticity connection output sheet metal 21,20 in the side of tripping coil protective cover 41-C; Be provided with the step 41-H that is used to hold power supply input sheet metal 51,50 at the end face of tripping coil protective cover 41-C and the junction of side; carry the pressure of arm to alleviate 51,50 pairs of release 28 left and right sides of elastic sheet metal 21,20 and power input, make elastic sheet metal 21,20 and power input 51,50 steady operations.
Constitute 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, simulation leakage current generating switch 66,67,88, the starting switch 72 that resets, 72A and tripping coil 26 with reset button 8 interlocks with reset button 8 interlocks mutual be connected become one can the freedom activity integral body, they are fitted to each other, and are indispensable.
As Fig. 7-1, shown in Figure 3, the utility model also is provided with elastic sheet metal 46 and the simulation leakage current current-limiting resistance 47 that is used for manually producing the simulation leakage current below testing button 7, this elastic sheet metal 46 and simulation leakage current current-limiting resistance 47 (resistance R 3 among Figure 10) constitute 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 pushing testing button 7 downwards, elastic sheet metal 46 contacts with simulation leakage current current-limiting resistance 47 and manually produces the simulation leakage current; Shown in Fig. 7-1, 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 the utility model earth leakage protective socket control circuit physical circuit figure.As shown in the figure, this control circuit is mainly by the differential differentiating transformer L1 (1000:1) that is used to detect 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; 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 detection signal output 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 ends 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 is a switch that has a pair of normally-closed contact and a pair of normally opened contact, and 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 and K switch R-2-1, the KR-2-2 of reset button RESET interlock, KR-3-1, KR-3-2 closure/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 to represent whether earth leakage protective socket has the power supply output indicator V3 (LED1) of 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 to represent the whether homing light V5 (LED2) of end-of-life of earth leakage protective socket.When leakage protection circuit working properly, constitute 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 constituting 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 do not work, and shows leakage protection circuit end-of-life, the earth leakage protective socket of reminding the user in time more to finish 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 constitutes the utility model leakage protection circuit 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 be 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 produce a simulation leakage current automatically.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, the normally opened contact closure, 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 the back reset button when not resetting, 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 produce the simulation leakage current automatically, 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 given the gate pole of controllable silicon V4, controllable silicon V4 is triggered, positive pole and negative pole conducting, there is big 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 closure of simulation leakage current generating K switch R-1, normally-closed contact disconnects, and the simulation leakage current disappears.
Otherwise; if leakage protection circuit can't operate as normal; current leakage jack life termination; then not conducting of controllable silicon V4; all the time there is not big 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.
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 does not disconnect as yet, starting switch KR-4 and the reset button RESET interlock owing to reset, starting switch KR-4 closure resets, 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 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 closure, the simulation leakage current disappears.After reset button RESET resets, Lian Dong K switch R-2-1 with it, KR-2-2; KR-3-1, the KR-3-2 closure, 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 inserts power supply, press reset button RESET, load end LOAD and receptacle face have electric power output, socket operate as normal.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 the L2 (200:1) that is used to detect 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 a closure state, A point and B point are same point, because of 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 whether just often detecting the earth leakage protective socket function, shown in Fig. 7-4, can push testing button TEST, make with it the Test Switchboard KR-5 closure of interlock, produce the simulation leakage current, detect whether end-of-life of earth leakage protective socket.If leakage protection circuit can't operate as normal, 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 suppress the generation of false triggering through being attempted by the filtering of the anti-interference capacitor C 5 between silicon controlled gate pole and the ground.
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; as Figure 10, shown in Figure 5; the utility model extends point discharge sheet metal 25A, a 24A who is used to discharge respectively 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 utility model is passing discharge metal sheet 51A, the 50A that also extends a right angle trigonometry shape that is used to discharge on the power firestreak of differential differentiating transformer, the zero line input sheet metal 51,50 respectively, 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; discharge metal sheet 25A, 51A and the air dielectric that is connected between discharge metal sheet 24A, the 50A of right angle trigonometry shape at input zero line place of right angle trigonometry shape that is connected to input live wire place is breakdown; form atmospherical discharges; most of high pressure consumes by the discharge metal sheet; 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 embodiment of the utility model, described piezo-resistance MOV selects surge inhibition type piezo-resistance for use, makes it can also play the effect that prevents electrophoresis.
As shown in figure 10, the utility model 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 between the single-phase three-wire supply hub of earth leakage protective socket load output LOAD and receptacle face with reset button RESET interlock; 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 utility model 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 constitutes) 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, and shows wiring error.After the erector had only 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 utility model adopts above technical scheme, so the disclosed earth leakage protective socket of the utility model has following outstanding advantage:
(1) long service life, handling safety is reliable.
Because the utility model is with a fast trip spring 66-A again 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 power supply output conductor 14; fixed contact 16 on 13; 15 separate fast; elasticity connects output 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 in the extremely short time, to separate reliably; thereby reduce moving; the electric arc that fixed contact is produced when separating; prolong moving; in the useful life of fixed contact, make the longer service life of earth leakage protective socket.
(2), the defencive function that has the destruction that instantaneous pressure that anti-lightning strike and other reasons produces causes earth leakage protective socket.
(3) after the power line in earth leakage protective socket power input and the wall connects; need not to operate any parts; just can produce the simulation leakage current automatically, 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 constitutes 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 operate as normal;
B. when the element open circuit that constitutes earth leakage protective socket or short circuit are end-of-life; homing light V5 does not work; represent this leakage protection circuit end-of-life; 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.
So, 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.
(4) has manual detection and show the function of testing result.
A. produce leakage current when manual simulation, 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 operate as normal, and can reset that 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; this earth leakage protective socket end-of-life 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 utility model 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 had only 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 embodiment of the utility model and the know-why used, and is any based on the equivalent transformation on the technical solutions of the utility model basis, all belongs within the utility model protection range.
Claims (12)
1, a kind of new type electric leakageproof socket, it comprises housing, be installed in the earth leakage protective socket realized in the housing has/control circuit board of non-transformer output, and on this control circuit board, be provided with a pair of power input, a pair of power output end, at least one pair of elastic sheet metal, be used to detect the differential differentiating transformer of leakage current;
On described control circuit board, be provided with described power input is connected with power output end electric power/or the mechanical device that resets/trip that disconnects by elastic sheet metal;
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 the back-moving spring (91) on the reset guide post (35), the pad that resets (28A), with " T " font release (28), snap close (30) and the tripping coil (26) of reset button (8) interlock; It is characterized in that:
The top diameter of described reset guide post (35) forms step (35A) greater than its underpart diameter between the upper and lower part; Back-moving spring (91) is enclosed within the top of reset guide post (35), is positioned between the middle layer bracket (3) of reset button (8) and insulation;
Be with a fast trip spring (66-A) in the lower part of described reset guide post (35), this 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 a locked groove (36) that caves near its place, bottom, and the bottom surface of reset guide post (35) is plane (41);
Have a through hole (30E) that runs through before and after it at the middle part of release (28), cross release (28) middle part through hole (30E) and be provided with a snap close of movably making (30), be provided with a bonnet lock hole (31) at the end face of snap close (30) by metal material; 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).
2, new type electric leakageproof socket according to claim 1; it is characterized in that: described power input (51,50) links to each other with power firestreak, zero line input wires screw (10,9) by power supply input wires sheet (25,24); extend a point discharge sheet metal right angle trigonometry shape, that be used to discharge (25A, 24A) on the described power supply input wires sheet (25,24) respectively; the two metal sheets tip is staggered relatively, and keeps certain intervals.
3, new type electric leakageproof socket according to claim 1; it is characterized in that: on described power input (51,50), extend a point discharge sheet metal right angle trigonometry shape, that be used to discharge (51A, 50A) respectively; the two metal sheets tip is staggered relatively, and keeps certain intervals.
4, according to the described new type electric leakageproof socket of one of claim 1-3, it is characterized in that: described a pair of power input is placed on the top of carrying arm about described release (28), the below of the pad that resets.
5, new type electric leakageproof socket according to claim 4 is characterized in that: the described resetting/mechanical device that trips also comprises a simulation leakage current generating switch (KR-1) that links with reset button (8);
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 triangular shape is 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 is provided with a contact (68A, 68B) on the upper and lower surface of intermediate metal film (88), is 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), constitutes 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 produces automatically with contact (67A) on the sheet metal (67) topmost.
6, new type electric leakageproof socket according to claim 5 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;
In correctly Connect Power source and when being in trip status, of earth leakage protective socket at described fast trip spring
Under the pushing (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.
7, new type electric leakageproof socket according to claim 6 is characterized in that: the described resetting/mechanical device that trips also comprises a starting switch that resets (KR-4) 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, 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 lead, 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.
8, new type electric leakageproof socket according to claim 7 is characterized in that: described 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 that resets (28A), " T " font release (28), snap close (30), latch spring (34) with reset button (8) interlock, with simulation leakage current generating switch (KR-1), the starting switch that resets (KR-4) and the tripping coil (26) of reset button (8) interlock be connected mutually become one can the freedom activity integral body.
9, new type electric leakageproof socket according to claim 8, it is characterized in that: the surface of this new type electric leakageproof socket also is equipped with a testing button (7), also is provided with the elastic sheet metal (46) and the simulation leakage current current limliting sheet metal (47) that are used for manually producing the simulation leakage current in the below of testing button (7); 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 simulation leakage current current limliting sheet metal; The unsettled below that is positioned at elastic sheet metal (46) of one end of this simulation leakage current current limliting sheet metal (47), the other end finally links to each other with the zero line of power input.
10, new type electric leakageproof socket according to claim 9 is characterized in that: the live wire of described power input (51) links to each other with the zero line (50) of described power input through tripping coil (26), a piezo-resistance (MOV).
11, new type electric leakageproof socket according to claim 10, it is characterized in that: after the live wire (51) of described earth leakage protective socket power input (LINE), zero line (50) pass differential differentiating transformer, by linking to each other with live wire, zero line output conduction sleeve in the single-phase three-wire power supply output plughole on one group of mains switch (KR-2-1, KR-2-2) of reset button interlock and earth leakage protective socket surface; Simultaneously, the live wire in the single-phase three-wire power supply output plughole on earth leakage protective socket surface, zero line output conduction sleeve link to each other with live wire, the zero line of earth leakage protective socket power output end by the mains switch (KR-3-1, KR-3-2) of another group with the reset button interlock again.
12, new type electric leakageproof socket according to claim 11, it is characterized in that: also be provided with two indicator lights on described circuit board (18) side by side, one is used for representing that whether the homing light (V5) of end-of-life and one are used for representing whether earth leakage protective socket has the power supply output indicator (V3) of power supply output to earth leakage protective socket; Be provided with a light lead pipe (77) of vertically placing above the indicator light at two, the top of this light lead pipe is positioned at indicator lamp hole (30-A) below on loam cake (2) surface;
Described power supply output indicator (V3) is connected between earth leakage protective socket power firestreak, the zero line output (81,80); Described homing light (V5) is connected in the loop that makes described mechanical trip device action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200797080U CN201213179Y (en) | 2008-04-01 | 2008-04-01 | Novel leakage protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200797080U CN201213179Y (en) | 2008-04-01 | 2008-04-01 | Novel leakage protection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201213179Y true CN201213179Y (en) | 2009-03-25 |
Family
ID=40497357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200797080U Expired - Lifetime CN201213179Y (en) | 2008-04-01 | 2008-04-01 | Novel leakage protection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201213179Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509919A (en) * | 2011-10-31 | 2012-06-20 | 黄华道 | Leakage protection socket with inverted wiring protection function |
| CN101552412B (en) * | 2008-04-01 | 2012-09-19 | 黄华道 | Novel electric leakage protecting socket |
| CN103094878A (en) * | 2011-10-31 | 2013-05-08 | 黄华道 | Leakage detecting and protecting circuit with function of preventing and protecting impact of lightning |
| CN105048190A (en) * | 2015-09-02 | 2015-11-11 | 李琴琴 | Electrical equipment automatic wiring device used for two-phase circuit |
| CN105071136A (en) * | 2015-09-02 | 2015-11-18 | 方新刚 | A connection device used for connecting a two-phase circuit to an electrical apparatus and provided with a resetting spring |
| CN105186212A (en) * | 2015-09-02 | 2015-12-23 | 安溪县百家宜家居用品有限公司 | Electrical equipment connection device employing two-phase circuits and dissipating heat with fan |
-
2008
- 2008-04-01 CN CNU2008200797080U patent/CN201213179Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552412B (en) * | 2008-04-01 | 2012-09-19 | 黄华道 | Novel electric leakage protecting socket |
| CN102509919A (en) * | 2011-10-31 | 2012-06-20 | 黄华道 | Leakage protection socket with inverted wiring protection function |
| CN103094878A (en) * | 2011-10-31 | 2013-05-08 | 黄华道 | Leakage detecting and protecting circuit with function of preventing and protecting impact of lightning |
| CN103094878B (en) * | 2011-10-31 | 2016-08-03 | 黄华道 | There is the leakage current detection protection circuit of thunder-lightning surge protection function |
| CN105048190A (en) * | 2015-09-02 | 2015-11-11 | 李琴琴 | Electrical equipment automatic wiring device used for two-phase circuit |
| CN105071136A (en) * | 2015-09-02 | 2015-11-18 | 方新刚 | A connection device used for connecting a two-phase circuit to an electrical apparatus and provided with a resetting spring |
| CN105186212A (en) * | 2015-09-02 | 2015-12-23 | 安溪县百家宜家居用品有限公司 | Electrical equipment connection device employing two-phase circuits and dissipating heat with fan |
| CN105071136B (en) * | 2015-09-02 | 2017-02-01 | 国网山东省电力公司日照供电公司 | A connection device used for connecting a two-phase circuit to an electrical apparatus and provided with a resetting spring |
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| C14 | Grant of patent or utility model | ||
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