CN101399418B - Novel leakage protection socket - Google Patents

Novel leakage protection socket Download PDF

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Publication number
CN101399418B
CN101399418B CN200710164228A CN200710164228A CN101399418B CN 101399418 B CN101399418 B CN 101399418B CN 200710164228 A CN200710164228 A CN 200710164228A CN 200710164228 A CN200710164228 A CN 200710164228A CN 101399418 B CN101399418 B CN 101399418B
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China
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sheet metal
zero line
contact
resets
power
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CN200710164228A
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CN101399418A (en
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黄华道
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黄华道
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Abstract

The invention discloses a novel electric leakage protection socket which is characterized by comprising an analog leakage current generation switch which is in linkage with a reset button. The novel electric leakage protection socket consists of three elastic sheet metals which are arranged in a triangular shape; one of the sheet metals is arranged on the bottom, one sheet metal is arranged in the middle, and the other sheet metal is arranged on the top: the lower sheet metal is connected with a power supply zero line which runs through a differential differentiating transformer by a current limiting resistor; the middle sheet metal is connected with a live wire of a power supply input end by a trip coil; the upper sheet metal is connected with the power supply zero line by a thyristor. The power supply input end of the electric leakage protection socket is connected with the power wire in the wall, and the middle sheet metal is in contact and conducted with the lower sheet metal to form a loop which can automatically generate analog leakage current without operations on any components to generate the analog leakage current; when the reset button is reset, the middle sheet metal tilts up under the elastic action thereof, and is disconnected from the lower sheet metal and in contact and conducted with the upper sheet metal, and the analog leakage current fades away.

Description

New type electric leakageproof socket
Technical field
The present invention relates to a kind of new type electric leakageproof socket, refer to a kind of new type electric leakageproof socket that any parts just can carry out life-span stop detection to earth leakage protective socket automatically and show testing result that after the power line in earth leakage protective socket power input and the wall connects, need not to operate especially; This earth leakage protective socket also has and prevents the function of being struck by lightning, and the function that stops the reverse wiring mistake.
Background technology
Along with the continuous development of earth leakage protective socket industry, people require increasingly high to the safety in utilization 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.
Yet common in the market earth leakage protective socket does not only have life end checking function; And; When its end-of-life, the prompt facility that concerning the user, has no, its SR 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 in the market earth leakage protective socket does not also have the function of anti-thunderbolt.When the instantaneous pressure that atmospheric electrical phenomena or other reasons cause occurring, very easily earth leakage protective socket is caused damage.
Common in the market earth leakage protective socket does not also have the function that stops the reverse wiring mistake.When installation personnel links to each other the power firestreak in the wall, zero line by error 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 basic inner leakage protection circuit of earth leakage protective socket of just not flowing through of the electric current of the power consumption equipment of flowing through; So; This moment, earth leakage protective socket basic did not just play any earth leakage protective effect, if 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 and a kind ofly after the power line in earth leakage protective socket 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.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 SR automatically and can be resetted, after resetting; Homing light goes out; The power supply output indicator is bright, shows that earth leakage protective socket can operate as normal, 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 through homing light do not work point out this earth leakage protective socket of user end-of-life and stop SR to reset; Make the single-phase three-wire power supply output plughole of load output and the receptacle face of earth leakage protective socket 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 object of the present invention provides a kind of earth leakage protective socket with anti-thunderbolt function.When the instantaneous pressure that thunder and lightning or other reasons cause occurring, earth leakage protective socket can be protected himself through the discharge of discharge metal sheet.
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 by error with the power output end of earth leakage protective socket; Earth leakage protective socket of the present invention can stop SR 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 realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of new type electric leakageproof socket, and it comprises housing, be installed in the earth leakage protective socket realized in the housing has/and the control circuit board of non-transformer output, elasticity power firestreak, zero line input sheet metal, power firestreak, zero line output conductor, elasticity connect output sheet metal, power firestreak, zero line output sheet metal, be used to detect the differential differentiating transformer of leakage current; It is characterized in that: this earth leakage protective socket also comprises a simulation leakage current generating switch that links with SR;
This simulation leakage current generating switch is positioned at the below of the release below the earth leakage protective socket SR, and it is the elastic sheet metal that triangular shape puts by three and constitutes;
Wherein, sheet metal is positioned at below, and in the middle of a sheet metal was positioned at, a sheet metal was positioned at the top; Upper surface at nethermost sheet metal is provided with a contact, respectively is provided with a contact on the upper and lower surface of intermediate metal film, is provided with a contact at the lower surface of uppermost sheet metal;
Said nethermost sheet metal links to each other with the zero-power line that passes differential differentiating transformer through simulation leakage current current-limiting resistance; Intermediate metal film links to each other with the live wire of ac power input end through tripping coil; Topmost sheet metal links to each other with the zero line of power input through 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 SR when being in trip status, the contact on the intermediate metal film lower surface contacts conducting with the contact of bottom sheet metal upper surface; The live wire of power input links to each other with the power input zero line through tripping coil, intermediate metal film, bottom sheet metal, simulation leakage current current-limiting resistance, constitutes to need not to operate the simulation leakage current generating loop that any parts can produce the simulation leakage current automatically;
When SR was pressed, the intermediate metal film upper contact still contacted with the contact of bottom sheet metal, continued to produce the simulation leakage current;
When SR resets; Intermediate metal film is tilted upward under the elastic reaction of himself; Contact on contact on its lower surface and the bottom sheet metal is broken off, and the contact on its upper surface contact conducting, the simulation leakage current of generation disappearance automatically with contact on the sheet metal topmost.
After the power line in power input of the present invention 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; Function is complete, and is safe in utilization, long service life.
Description of drawings
Fig. 1 is the three-dimensional decomposition texture sketch map of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the front view after the present invention removes loam cake;
Fig. 4 is power supply input sheet metal of the present invention, power supply output conductor, elasticity connects the output sheet metal and power supply is exported the annexation sketch map between the sheet metal;
Fig. 5 is that each module position concerns sketch map on the circuit board of the present invention;
Fig. 6 is the present invention's three-dimensional decomposition texture sketch map of mechanical device that resets/trip;
Fig. 7-the 1st, the B-B partial sectional view of Fig. 3, each module position concerns sketch map during the output of socket initial condition non-transformer;
Fig. 7-the 2nd, the B-B partial sectional view of Fig. 3 is pushed SR each module position of moment and is concerned sketch map;
Fig. 7-the 3rd, the B-B partial sectional view of Fig. 3, each module position concerned sketch map when SR reset power socket operate as normal had power supply output;
Fig. 7-the 4th, the B-B partial sectional view of Fig. 3, each module position concerns sketch map when pushing the output of testing button SR dropout outage supply socket power supply;
Fig. 8-the 1st, the C-C partial sectional view of Fig. 3, after SR resetted, each module position concerned sketch map when supply socket had power supply output;
Fig. 8-the 2nd, the C-C partial sectional view of Fig. 3, SR is threaded off, and each module position did not concern sketch map when supply socket had power supply output;
Fig. 9-the 1st, the A-A partial sectional view of Fig. 3, during the SR 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 SR 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 SR reset mode, the 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 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.
Said 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.
Like Fig. 1, shown in Figure 2, on loam cake 2, have power supply output plughole 5,6, SR hole 8-A, testing button hole 7-A and status indicator lamp hole 30-A.In SR hole 8-A and testing button hole 7-A, be provided with SR (RESET) 8 and testing button (TEST) 7, SR 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 base 4 inboard draw-in groove 4-B.
Metal ground connection mounting panel 1 links to each other with the earth through 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.
Like Fig. 1, shown in Figure 3, be placed with a power firestreak output conductor 14 and a zero-power line output conductor 13 respectively in the both sides of the middle layer bracket 3 that insulate.At the two ends of power supply output conductor 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.Like Fig. 3, shown in Figure 4, also be provided with a fixed contact 16 at an end of power firestreak output conductor 14, other end riveted joint has an elasticity to connect output sheet metal 21, and the end that connects output sheet metal 21 in elasticity is provided with a moving contact 23.Equally, be provided with a fixed contact 15 at an end of zero-power line output conductor 13, other end riveted joint has an elasticity to connect output sheet metal 20, and the end that connects output sheet metal 20 in elasticity is provided with a moving contact 22.
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 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, make SR reset/or thread off, anti-thunderbolt, stop the function of reverse wiring mistake.
Like Fig. 1, shown in Figure 5, on circuit board 18, be provided with two elasticity power firestreaks, zero line input sheet metal 51,50.One end downwarping, 90 degree of elasticity power supply input sheet metal 51,50; 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 through power supply input wires sheet 25,24; Power firestreak input wires screw 10 links to each other with power firestreak in the wall through lead, and zero-power line input wires screw 9 passes through lead and links to each other with zero-power line in the wall; The other end of elasticity power supply input sheet metal 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 sheet metal 81,80.End at power firestreak, zero line output sheet metal 81,80 is respectively equipped with a fixed contact 53,52.
Like 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 respectively be arranged on middle layer bracket 3 on power supply output conductor 14,13 on a pair of fixed contact 16,15 contact or break off, constitute one group of live wire, zero line mains switch.Two elasticity that link to each other with power supply output conductor 14,13 are connected a pair of moving contact 23,22 and power supply on the output sheet metal 21,20 to be exported a pair of fixed contact 53,52 on the sheet metal 81,80 and contacts or break off, and constitutes another and organizes live wire, zero line mains switch.Moving contact, fixed contact that above-mentioned power supply input sheet metal 51,50, power supply output conductor 14,13, elasticity connect on output sheet metal 21,20 and the power supply output sheet metal 81,80 constitute live wire, two groups of mains switches 55 of zero line 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.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 through controllable silicon (SCR) V4, and SR 8 is threaded off; The power supply output of earth leakage protective socket is cut off in the earth leakage protective socket tripping operation.
Shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7-1, Fig. 9-1, on circuit board 18, be provided with can make elasticity power supply input sheet metal 50,51 is connected with power supply output conductor 13,14 electric power/or break off and through the elasticity that link to each other with power supply output conductor 13,14 is connected output 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 SR 8, be enclosed within back-moving spring 91 and the fast trip spring 66-A on the reset guide post 35, the pad 28A that resets, " T " font release 28, snap close 30, latch spring 34 with SR 8 interlocks, with simulation leakage current generating switch 66,67,88, the starting switch 72 that resets, 72A and the tripping coil 26 of SR 8 interlocks.
" T " font release 28 is positioned at the below of SR 8, with SR 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.On every grade of step, be provided with a little convex cylindrical 28F.The pad 28A that resets is positioned at the below of SR 8, the top of " T " font release 28.The convex cylindrical 28F corresponding section of carrying on the arm at bottom surface and the release about 28 of the pad 28A that resets is provided with the circular hole that falls in, and convex cylindrical 28F can be embedded in this circular hole, and moves up and down.Carry the convex cylindrical 28F and the circular hole that pad 28A bottom surface falls in that resets on the arm through release about 28, reset pad 28A and release 28 can be combined, move 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.
As shown in Figure 5, connect on the output sheet metal 21,20 in elasticity power supply input sheet metal 51,50, elasticity, the little convex cylindrical 28F corresponding section of carrying on the arm with release about 28 has through hole 69.When assembling release 28 and resetting pad 28A; After earlier release about 28 being carried convex cylindrical 28F on the arm and is passed elasticity power supply input sheet metal 51,50 and is connected the through hole of exporting on the sheet metal 21,20 69 with elasticity; Be inserted in again in the circular hole that the pad 28A bottom surface that resets falls in, elasticity power supply input sheet metal 51,50 be connected with elasticity export sheet metal 21,20 to be positioned at the below of the pad 28A that resets, the top of release 28; In release 28 and SR 8 linkages from top to bottom, driving elasticity power supply input sheet metal 51,50 is connected with elasticity and exports sheet metal 21,20 and move up and down.
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 SR 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 the lower part 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 SR 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 SR 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 guide post 35 has the locked groove 36 of a circle depression near its at; The bottom surface of reset guide post 35 is plane 41; When SR 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 " L " shape snap close 30 of movably processing, be provided with a bonnet lock hole 31 at the end face of snap close 30 by metal material.When SR 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 in the outside of snap close 30 sidewalls one be built-in with movable core 42 tripping coil 26, tripping coil 26 built-in movable cores 42 face the sidewall of 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 SR 8 in the bonnet lock hole 31 of snap close 30 end faces, penetrate or pass, and SR 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; Below release 28, be provided with a simulation leakage current generating switch (the K switch R-1 among Figure 10) with SR (RESET) 8 interlock, 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 a contact 68A, 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 SR 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 SR from static state to the reset mode; Shown in Fig. 9-3; When SR 8 is in reset mode; Release 28 moves up, and drives the pad 28A that resets and moves up together, and 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 contact 68B and the contact 68C of sheet metal 66 upper surfaces on its lower surface break off 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.Shown in figure 10, sheet metal 66 links to each other with the zero-power line that passes differential differentiating transformer through simulation leakage current current-limiting resistance R4; Middle sheet metal 88 links to each other with the live wire of ac power input end through tripping coil 26 (L3 among Figure 10); Sheet metal 67 links to each other with the zero line of power input through 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 connect back and SR 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 links to each other with the power input zero line that passes differential differentiating transformer L1, L2 through tripping coil 26 (L3), sheet metal 88, sheet metal 66, simulation leakage current current-limiting resistance R4, constitutes to need not to operate any parts and produce automatically and simulate the 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 SR to reset, and homing light V5 does not work.After SR 8 resetted, sheet metal 88 broke off 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 SR 8.This starting switch that resets is made up of with electric contact 72A elastic sheet metal 72.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 through 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 through the anode of lead with controllable silicon V4.Shown in Fig. 7-1, and SR 8 is when being in reset mode shown in Fig. 7-3 time when SR 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 SR 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 breaks off with contact 72A when SR 8 is released, and the starting switch that resets breaks off, thus the state of reaction SR 8.
As shown in Figure 6, the pad 28A that resets, release 28, snap close 30, latch spring 34, 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 SR 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; Elasticity connects output sheet metal 21,20 and power supply is imported the pressure that 51,50 pairs of release 28 left and right sides of sheet metal are carried arm to alleviate, and makes elasticity connect output sheet metal 21,20 and power supply input sheet metal 51,50 steady operations.
Constitute the mechanical device that resets/trip reset guide post 35, be enclosed within back-moving spring 91 and the fast trip spring 66-A on the reset guide post 35, the pad 28A that resets, " T " font release 28, snap close 30, latch spring 34, simulation leakage current generating switch 66,67,88, the starting switch 72 that resets, 72A and tripping coil 26 with SR 8 interlocks with SR 8 interlocks mutual be connected become one can the freedom activity integral body; They are fitted to each other, and are indispensable.
Like Fig. 7-1, shown in Figure 3; The present invention also is provided with the elastic sheet metal 46 and 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 constitutes the K switch R-5 shown in Figure 10 with simulation leakage current current-limiting resistance 47 (resistance R 3 among 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; Discharge testing button 7, elastic sheet metal 46 breaks off 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 mainly by the differential differentiating transformer L1 (1000: 1) that is used for detecting leakage current, L2 (200: 1), control chip IC (RV4145), the tripping coil L3 (SOL) that is built-in with iron core, controllable silicon V4, with the simulation leakage current generating K switch R-1 of earth leakage protective socket SR RESET interlock, be connected on supply line and K switch R-2-1 SR RESET interlock, KR-2-2, KR-3-1, KR-3-2, the starting switch KR-4 that resets, homing light V5, power supply output indicator V3 and simulation leakage current current-limiting resistance R4, R3 and diode that some are relevant, resistance, electric capacity etc. and form with SR RESET interlock.
After the live wire HOT of earth leakage protective socket power input LINE, zero line WHITE pass differential differentiating transformer L1, L2, link to each other through exporting the conduction sleeve with live wire, zero line in the surperficial single-phase three-wire power supply output plughole of earth leakage protective socket with K switch R-2-1, the KR-2-2 of SR RESET interlock; Simultaneously, the live wire HOT in the single-phase three-wire power supply output plughole on earth leakage protective socket surface, zero line WHITE output conduction sleeve link to each other with live wire HOT, the zero line WHITE of earth leakage protective socket power output end (load link) LOAD through K switch R-3-1, the KR-3-2 of another group with SR 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 through 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 SR RESET interlock; Simultaneously, the anode of controllable silicon V4 also with simulation leakage current generating K switch R-1 in the sheet metal 67 of formation normally opened contact link to each other.
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 through 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 through 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 SR RESET through 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 SR RESET interlock closed/or break off; And the disconnection of simulation leakage current generating K switch R-1 normally-closed contact/or closed, the normally opened contact closure/or break off.
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 in proper working order; Element such as the controllable silicon V4, tripping coil L3, differential differentiating transformer L1, L2, the control chip IC that constitute leakage protection circuit are intact; Controllable silicon V4 is intact can normally the time; Along with the conducting of controllable silicon V4, homing light LED2 is bright, explains that earth leakage protective socket has creepage protection function; Otherwise; When leakage protection circuit can not be in proper working order, break down like one of the element controllable silicon V4 that constitutes leakage protection circuit, tripping coil L3, differential differentiating transformer L1, L2, control chip IC, 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 leakage 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 SR RESET interlock, formation need not to operate any parts can produce automatically one simulate leakage current simulation leakage current generating circuit.After the power input LINE of earth leakage protective socket and the power line in the wall connect; When SR RESET was in trip status and does not reset, promptly earth leakage protective socket was in initial condition, when SR 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 SR RESET interlock; Its live wire HOT and zero line WHITE with power input directly is communicated with, and produces 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.In proper working order when leakage protection circuit, detect this leakage current after, through the mechanical device that resets/trip the normally-closed contact of simulation leakage current K switch R-1 is broken off, normally opened contact is closed, the simulation leakage current disappears, SR RESET resets.
Shown in figure 10, when the power input of earth leakage protective socket and the power supply in the wall connect the back SR when not resetting, because a pair of normally-closed contact of simulation leakage current generating K switch R-1 links to each other the live wire HOT of power input with the zero-power line WHITE that passes differential differentiating transformer L1, L2; 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, and differential differentiating transformer L1, L2 output 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, and anodal and negative pole conducting has big electric current to flow through in the tripping coil L3; Tripping coil L3 produces magnetic field; Its built-in iron core action makes SR RESET action through the mechanical device that resets/trip, and SR can reset; Simultaneously, the normally opened contact of simulation leakage current generating K switch R-1 is closed, and normally-closed contact breaks off, 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 does not have big electric current to flow through all the time in the tripping coil L3, can't produce magnetic field; Its inner iron core is failure to actuate, and the mechanical device that resets/trip is failure to actuate all the time, and SR can not be reset all the time; Homing light V5 does not work all the time, and 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.
Shown in Figure 10, Fig. 7-2, Fig. 9-2; When pressing SR RESET, the normally-closed contact 68C of simulation leakage current generating K switch R-1, when 68B does not break off as yet, because the starting switch KR-4 that resets links with SR RESET; 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, and it is last that the voltage at former AB two ends is added to tripping coil (SOL) L3, and making has certain electric current to flow through and produce magnetic field in the tripping coil; Inner iron core is done ballistic motion, through the mechanical device that resets/trip SR can be resetted shown in Fig. 7-3, 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 SR RESET action is broken off 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 SR 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 inserts power supply, press SR RESET, load end LOAD and receptacle face have electric power output, socket operate as normal.Owing to 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 this moment in the circuit when in the circuit leakage current generating is arranged; The voltage signal that differential differentiating transformer L1 and L2 induce certain value at once is input to IC, outputs a control signal to the gate pole of controllable silicon V4 from 5 pin of IC, and controllable silicon V4 is triggered; Positive pole and negative pole conducting are electronegative potential thereby make the positive pole place B point of controllable silicon V4, because the normally opened contact of K switch R-1 is a closure state at this moment; A point and B point are same point, and 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, through the mechanical device that resets/trip SR 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, and 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 of interlock closed, 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 SR RESET can not reset.
In above various situation, must through the filtering of the anti-interference capacitor C 5 that being attempted by between silicon controlled gate pole and the ground from the control signal that 5 pin of IC are exported, 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; Like Figure 10, shown in Figure 5; The present invention 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, two metal sheets is most advanced and sophisticated to be placed relatively, and keeps certain intervals.
Shown in Figure 10, Fig. 7-1, Fig. 8-1; The present invention also extends point discharge sheet metal 51A, a 50A who is used to discharge respectively passing on the power firestreak of differential differentiating transformer, the zero line input sheet metal 51,50; Two metal sheets is most advanced and sophisticated to be placed 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; Be connected to point discharge sheet metal 25A, the 51A at input live wire place and be connected to point discharge sheet metal 24A, the air dielectric between the 50A at input zero line place breakdown; Form atmospherical discharges; Most of high pressure consumes through the discharge metal sheet, and the residue sub-fraction consumes through tripping coil SOL, piezo-resistance MOV, thereby has protected earth leakage protective socket not broken by high pressure.
In specific embodiment of the present invention, said piezo-resistance MOV selects surge inhibition type piezo-resistance for use, makes it can also play the effect that prevents electrophoresis.
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 through 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 SR RESET interlock; Between the live wire of the live wire of earth leakage protective socket input LINE, zero line and the single-phase three-wire supply hub of receptacle face, the zero line also is to link to each other through K switch R-2-1, KR-2-2 with SR RESET interlock; So; When the installer linked to each other the power line in the wall by error with earth leakage protective socket load output LOAD, the present invention need not to operate the circuit (normally-closed contact, resistance R 4, tripping coil SOL by simulation leakage current K switch R-1 constitute) that any parts can produce the simulation leakage current automatically can't produce leakage current, and control chip IC can't export control signal; Not conducting of controllable silicon V5; Do not have 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 SR to reset; All the time be in off-state with K switch R-2-1, KR-2-2, KR-3-1, the KR-3-2 of SR RESET interlock, 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 SR 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, so earth leakage protective socket disclosed by the invention has following outstanding advantage:
(1) 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 SR; After resetting, V3 is bright for the power supply output indicator, and homing light V5 extinguishes, and explains 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 SR to reset, and 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.
(2) earth leakage protective socket long service life.
Because the present invention is with a fast trip spring 66-A again on reset guide post 35; When SR is in trip status; The fast trip spring 66-A pad 28A that can promote to reset is downward; Make that the downward haptic element 28E of the pad 28A that resets is stable to be pressed in elastic sheet metal 88 tops, make reliable and stable contact of contact 68C on contact 68B and the sheet metal 66 on the elastic sheet metal 88, produce and simulate leakage current; After SR resets; This fast trip spring 66-A is in confined state, and when SR tripped, this fast trip spring 66-A was released; Can help the moving contact 55,54 on the power supply input sheet metal 51,50 to separate fast with fixed contact 16,15 on the power supply output conductor 14,13; The moving contact 23,22 that elasticity connects on the output sheet metal 21,20 separates with fixed contact 53,53 on the power supply output sheet metal 81,80 fast, guarantees extremely short reliably disengaging time, thus the electric arc that is produced when reducing dynamic and static contact separation; Prolong the useful life of dynamic and static contact, make the longer service life of earth leakage protective socket.
(3), the defencive function that has the destruction that instantaneous pressure that anti-thunderbolt and other reasons produce causes earth leakage protective socket.
(4) has manual detection and show the function of testing result.
A. produce leakage current when manual simulation, earth leakage protective socket is in proper working order, and when not having end-of-life, homing light V5 is bright, explains that earth leakage protective socket can operate as normal, and can reset that after, 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, and this earth leakage protective socket end-of-life is described, and stops SR 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 were connected to the power line in the wall on the earth leakage protective socket output by error, the present invention need not to operate the circuit that any parts can produce the simulation leakage current automatically can't produce leakage current, and control chip IC can't produce control signal; Not conducting of controllable silicon V4; Do not have 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 SR 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 SR 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 present invention and the know-why used, and is any based on the equivalent transformation on the technical scheme of the present invention basis, all belongs within the protection range of the present invention.

Claims (13)

1. new type electric leakageproof socket, it comprises housing, being installed in the earth leakage protective socket realized in the housing has/control circuit board (18) of non-transformer output; Elasticity power firestreak, zero line input sheet metal (51,50); Power firestreak, zero line output conductor (14,13); Elasticity connects output sheet metal (21,20); Power firestreak, zero line output sheet metal (81,80); Be used to detect the differential differentiating transformer (19) of leakage current; It is characterized in that: this earth leakage protective socket also comprises a simulation leakage current generating switch (KR-1) that links with SR (8);
This simulation leakage current generating switch is positioned at the below of the release (28) below the earth leakage protective socket SR, 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);
Said nethermost sheet metal (66) links to each other with the zero-power line that passes differential differentiating transformer through simulation leakage current current-limiting resistance (R4); Intermediate metal film (88) links to each other with the live wire of ac power input end through tripping coil (26); Topmost sheet metal (67) links to each other with the zero line of power input through 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 SR 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 SR (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 SR (8) when resetting; Intermediate metal film (88) is tilted upward under the elastic reaction of himself; Contact on its lower surface (68B) is broken off with the contact (68C) on the bottom sheet metal (66); 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.
2. new type electric leakageproof socket according to claim 1 is characterized in that: on earth leakage protective socket control circuit board (18), be provided with and can make said elasticity power firestreak, zero line input sheet metal (51,50) be connected with power firestreak, zero line output conductor (14,13) electric power/or break off and connect through power firestreak, zero line output conductor (14,13), elasticity that to export that sheet metal (20,21) makes power firestreak, zero line is exported sheet metal (81,80) 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 SR (8), be enclosed within back-moving spring (91) and fast trip spring (66-A) on the reset guide post (35), the pad that resets (28A), " T " font release (28), snap close (30), latch spring (34) and the tripping coil (26) that link with SR (8);
" T " font release (28) is positioned at the below of SR (8), links with SR (8); " T " font release (28) left and right sides stretches out and forms the stair-stepping arm of carrying, and is provided with a little convex cylindrical (28F) on every grade of step of arm carrying; The pad (28A) that resets is positioned at the below of SR (8), the top of " T " font release (28); Convex cylindrical (28F) corresponding section of about the bottom surface of the pad that resets (28A) and release (28), carrying on the arm is provided with the circular hole that falls in; Convex cylindrical (28F) can be embedded in this circular hole; The pad (28A) that resets can be combined with release (28); Move up and down with release (28), also can be separated from one another with release (28); In the framework of trip coil (26K) of ccontaining pad that resets (28A) and release (28), be provided with and be used for limiting pad (28A) positive stop (26Z) of minimum removable point downwards that resets;
Connect on the output sheet metal (21,20) in said elasticity power firestreak, zero line input sheet metal (51,50), elasticity, have through hole (69) with little convex cylindrical (28F) corresponding section of carrying about release (28) on the arm; When assembling release (28) and the pad that resets (28A); Earlier with after putting forward convex cylindrical (28F) on the arm about release (28) and passing elasticity power firestreak, zero line input sheet metal (51,50) and be connected the through hole of exporting on the sheet metal (21,20) (69) with elasticity; Be inserted in again in the circular hole that the pad that resets (28A) bottom surface falls in, elasticity power firestreak, zero line input sheet metal (51,50) be connected with elasticity export sheet metal (21,20) to be positioned at the below of the pad that resets (28A), 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 central perforation longitudinally (29) in the centre of release (28), the reset guide post (35) that is with back-moving spring (91), fast trip spring (66-A) that is embedded in SR (8) bottom surface can move up and down along clear opening (29A), the central perforation (29) in the middle of the pad that resets (28A), the release (28);
The top diameter of reset guide post (35) forms step (35A) greater than the lower part 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 SR (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) that a circle caves near its at, 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 " L " shape snap close (30) of movably processing, be provided with a bonnet lock hole (31) at the end face of snap close (30) by metal material; At SR (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);
Between the sidewall of release (28) and snap close (30) madial wall, be provided with a latch spring (34); Be provided with in the outside of snap close (30) sidewall one be built-in with movable core (42) tripping coil (26), the built-in movable core (42) of tripping coil (26) faces the sidewall of 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 SR (8) in the bonnet lock hole (31) of snap close (30) end face, penetrate or pass, and SR (8) resets or threads off.
3. new type electric leakageproof socket according to claim 2 is characterized in that: the said pad that resets (28A) stretches out a haptic element (28E) downwards, and this haptic element (28E) is pressed on the intermediate metal film (88) of said formation simulation leakage current generating switch;
In correctly Connect Power source and when being in trip status of earth leakage protective socket; Under the pushing of said fast trip spring (66-A), the haptic element (28E) that the pad that resets (28A) stretches out downwards makes the contact (68B) of intermediate metal film (88) lower surface and the contact (68C) of bottom sheet metal (66) upper surface be permanently connected to conducting; When SR (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 intermediate metal film (88); Intermediate metal film (88) makes the contact (68B) on its lower surface break off with the contact (68C) of bottom sheet metal (66) upper surface under self elastic reaction, and the contact (68A) on intermediate metal film (88) upper surface contacts conducting with contact (67A) on sheet metal (67) lower surface of the top.
4. new type electric leakageproof socket according to claim 3 is characterized in that: the said resetting/mechanical device that trips also comprises a starting switch that resets (KR-4) that links with SR (8);
This starting switch that resets is made up 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 through 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 through lead, controllable silicon (V4);
When SR (8) was in trip status, reset mode, this starting switch that resets was in off-state; At SR (8) when being depressed, this starting switch closure that resets; When SR (8) when being released, this starting switch that resets becomes off-state from closure state.
5. new type electric leakageproof socket according to claim 4 is characterized in that: said reset guide post (35), be enclosed within back-moving spring (91) and fast trip spring (66-A) on the reset guide post (35), the pad that resets (28A), " T " font release (28), snap close (30), latch spring (34) with SR (8) interlock, with simulation leakage current generating switch (KR-1), the starting switch that resets (KR-4) and the tripping coil (26) of SR (8) interlock be connected each other become one can the freedom activity integral body.
6. new type electric leakageproof socket according to claim 5 is characterized in that: said power firestreak, zero line output conductor (14,13) are placed on the both sides of the middle layer bracket (3) of insulation in the housing respectively; At the two ends of power firestreak, zero line output conductor (14,13), go up with case top lid (2) that live wire hole, the null line hole of power supply output plughole (5,6) is up and down vertical opposite should locate to be provided with sheet clip leaf wing (62,63,60,61); End at power firestreak output conductor (14) also is provided with a fixed contact (16), and other end riveted joint has a said elasticity to connect output sheet metal (21), and the end that connects output sheet metal (21) in this elasticity is provided with a moving contact (23); End at zero-power line output conductor (13) is provided with a fixed contact (15), and other end riveted joint has another root elasticity to connect output sheet metal (20), and the end that connects output sheet metal (20) in this elasticity is provided with a moving contact (22);
One end downwarping, 90 degree of said elasticity power firestreak, zero line input sheet metal (51,50); 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) through 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 through lead; The other end of elasticity power firestreak, zero line input sheet metal (51,50) is respectively equipped with moving contact (55,54);
One end of said 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 elasticity power firestreak, the zero line input sheet metal (51,50) respectively be arranged on middle layer bracket (3) on power firestreak, a pair of fixed contact (16,15) on the zero line output conductor (14,13) contact or break off, constitute one group of live wire, zero line mains switch; Contact with a pair of fixed contact (53,52) on power firestreak, the zero line output sheet metal (81,80) with a pair of moving contact (23,22) on two elastic sheet metals (21,20) that power firestreak, zero line output conductor (14,13) link to each other or break off, constitute another and organize live wire, zero line mains switch;
The dynamic and static contact that above-mentioned elasticity power firestreak, zero line input sheet metal (51,50), power firestreak, zero line output conductor (14,13), elasticity connect on output sheet metal (20,21), power firestreak, the zero line output sheet metal (81,80) constitutes zero line, two groups of mains switch (KR-2-2 of live wire altogether; KR-3-2; KR-2-1, KR-3-1).
7. new type electric leakageproof socket according to claim 6 is characterized in that: also be provided with the elastic sheet metal (46) and the simulation leakage current current-limiting resistance (47) that are used for manually producing the simulation leakage current in the below of earth leakage protective socket testing button (7); Be used for a manual end that produces the elastic sheet metal (46) of simulation leakage current and link to each other with the live wire of earth leakage protective socket power output end (LOAD), the other end is unsettled, thereunder is provided with a simulation leakage current current-limiting resistance (47); The unsettled below that is used for manually producing the elastic sheet metal (46) of simulating leakage current that is positioned at 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.
8. new type electric leakageproof socket according to claim 7; It is characterized in that: 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, extend a point discharge sheet metal that is used to discharge (25A, 24A) respectively; Two metal sheets is most advanced and sophisticated to be placed relatively, and keeps certain intervals.
9. new type electric leakageproof socket according to claim 8; It is characterized in that: import on the sheet metal (51,50) at said elasticity power firestreak, the zero line that passes differential differentiating transformer and extend a point discharge sheet metal that is used to discharge (51A, 50A) respectively; Two metal sheets is most advanced and sophisticated to be placed relatively, and keeps certain intervals.
10. according to Claim 8 or 9 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 said 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 (HOT) of earth leakage protective socket power input (LINE), zero line (WHITE) pass differential differentiating transformer, link to each other through exporting the conduction sleeve with live wire, zero line in the surperficial single-phase three-wire power supply output plughole of earth leakage protective socket with one group of mains switch (KR-2-1, KR-2-2) of SR interlock; 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 through the mains switch (KR-3-1, KR-3-2) of another group with the SR interlock again.
12. new type electric leakageproof socket according to claim 11; It is characterized in that: on said circuit board (18), be provided with two indicator lights side by side, one is used for representing that whether homing light (V5) and one of end-of-life 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;
Said power supply output indicator (V3) is connected between earth leakage protective socket power firestreak, the zero line output sheet metal (81,80); Said homing light (V5) is connected in the loop that makes said mechanical trip device action.
13. new type electric leakageproof socket according to claim 12 is characterized in that; The said pad that resets (28A), release (28), snap close (30), latch spring (34), all place in the framework of trip coil (26K) with the simulation leakage current generating switch (66,67,88) of SR (8) interlock and the starting switch that resets (72,72A); Outside the coil of tripping coil (26), be provided with a tripping coil protective cover (41-C), respectively be provided with a hook pin (41-B) that 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 said 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 elasticity power firestreak, zero line input sheet metal (51,50) at the end face of tripping coil protective cover (41-C) and the junction of side.
CN200710164228A 2007-09-30 2007-09-30 Novel leakage protection socket Expired - Fee Related CN101399418B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101895088A (en) * 2009-05-20 2010-11-24 黄华道 Leakage detection protection circuit
CN101950895B (en) * 2010-08-06 2012-08-22 浙江万盛电气有限公司 Leakage protection socket with reverse wiring and end of life detection function
CN104143812A (en) * 2014-07-30 2014-11-12 黄华道 Electric leakage detection protection circuit
CN104934268B (en) * 2015-05-28 2017-03-08 深圳市良辉科技有限公司 A kind of earth leakage protective device that can force tripping operation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2599734Y (en) * 2003-01-30 2004-01-14 黄华道 Automatic cut-off for arc fault
CN2729896Y (en) * 2004-09-16 2005-09-28 黄华道 Electromagnetic socker with earth leakage and arc protection function
CN2781596Y (en) * 2004-09-27 2006-05-17 黄华道 Electromagnet socket with leakage and arc protection function
CN201107827Y (en) * 2007-09-30 2008-08-27 黄华道 Novel earth leakage protection socket

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2599734Y (en) * 2003-01-30 2004-01-14 黄华道 Automatic cut-off for arc fault
CN2729896Y (en) * 2004-09-16 2005-09-28 黄华道 Electromagnetic socker with earth leakage and arc protection function
CN2781596Y (en) * 2004-09-27 2006-05-17 黄华道 Electromagnet socket with leakage and arc protection function
CN201107827Y (en) * 2007-09-30 2008-08-27 黄华道 Novel earth leakage protection socket

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