CN101882732B - Leakage protection socket - Google Patents
Leakage protection socket Download PDFInfo
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- CN101882732B CN101882732B CN 200910083524 CN200910083524A CN101882732B CN 101882732 B CN101882732 B CN 101882732B CN 200910083524 CN200910083524 CN 200910083524 CN 200910083524 A CN200910083524 A CN 200910083524A CN 101882732 B CN101882732 B CN 101882732B
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- earth leakage
- leakage protective
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Abstract
The invention discloses a novel leakage protection socket. The leakage protection socket is characterized in that the trip/reset mechanical device also contains a lock latch and a bucking bar; the front end of the lock catch is provided with a slot; the lock latch is perpendicular to the front end of the lock catch to place, a plug board is fixed in the hollowed-out part of the lock latch; an elastic element is positioned under the lock latch, the bucking bar is on the lock latch; and a spring is sleeved on the bucking bar, the bucking bar is arranged under the side plate of a reset button, and the bottom of the bucking bar can be butted on the top of the lock latch. When the leakage protection socket is in an initial state, the lock catch is inserted in the hollowed-out part of the lock latch and positioned on the plug board, the spring element below the lock latch is compressed, and the bottom surface of a reset guide post and the lock hole on the top surface of the lock are staggered; and when the power input end of the leakage protection socket is combined with a power line in the wall and the end of life of the leakage protection socket is not reached, the hollowed-out part of the lock latch is inserted in the slot on the front end of the lock catch, the lock catch is fixed, and the lock hole on the top surface of the lock just faces to the bottom surface of the reset guide post to prepare for the reset of the reset button.
Description
Technical field
The present invention relates to a kind of earth leakage protective socket; Especially refer to a kind of when the power line in its power input and the wall connects after, the first testing button/or need not to operate any parts manually pushed, whether promptly detect earth leakage protective socket automatically intact; If earth leakage protective socket does not have end-of-life; Still have creepage protection function, the snap close in the earth leakage protective socket just is opened, and waits for the new type electric leakageproof socket that SR resets; If current leakage jack life termination then stops SR to reset, SR will can't reset all the time, and earth leakage protective socket does not have power supply output.
Background technology
Along with the continuous development of earth leakage protective socket industry, people to the safety in utilization of earth leakage protective socket and useful life require increasingly high.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 hope earth leakage protective socket, the longer the better, and this also proves earth leakage protective socket working stability, fail safe, good reliability from another point of view.
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, 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.
Summary of the invention
In view of the foregoing, main purpose of the present invention provides a kind of novel earth leakage protective socket.After the power input of this earth leakage protective socket and the power line in the wall connect; Manually push earlier testing button/or need not to operate any parts; Whether intact, if earth leakage protective socket does not have end-of-life, still have creepage protection function if promptly detecting earth leakage protective socket automatically; Its inner snap close promptly is opened, and waits for that SR resets; At this moment, push SR, SR just can reset, and earth leakage protective socket has power supply output; Otherwise, if current leakage jack life termination, its inner snap close can not be opened; Stop SR to reset; SR will can't reset all the time, and earth leakage protective socket does not have power supply output all the time, and prompting user this earth leakage protective socket is end-of-life.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: 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 said control circuit board, be provided with and can make power supply input sheet metal and power supply output sheet metal realize that electric power is connected/or the mechanical device that resets/trip of disconnection;
This mechanical device that resets/trip comprises the reset guide post that is embedded in below the earth leakage protective socket SR, is enclosed within back-moving spring, fast trip spring, the pad that resets, " T " font release, snap close, tripping coil on the reset guide post, and it is characterized in that: this mechanical device that resets/trip also comprises lock bolt, the top rod of hollow out; Leading section at said snap close is provided with draw-in groove; The lock bolt of said hollow out is placed perpendicular to the leading section of snap close, is installed with plate in the inside at lock bolt hollow out position; Below lock bolt, be placed with an elasticity original paper, above lock bolt, be placed with a said top rod; Be with spring on the rod of said top, the top rod is positioned at the below of SR side plate, and the bottom of top rod can be against on the top of lock bolt;
The power input of earth leakage protective socket not with wall in power line when linking to each other; Earth leakage protective socket is in initial condition; Said snap close inserts the hollow-out parts of said lock bolt; And be shelved on the said plate, the elasticity original paper of lock bolt below is compressed, and the bonnet lock hole of the bottom surface of reset guide post and snap close end face is the dislocation shape;
After the power input of earth leakage protective socket and the power line in the wall connect; If earth leakage protective socket does not have end-of-life; The plate at said lock bolt hollow out position inserts in the draw-in groove of snap close leading section; Snap close is fixed, and the bonnet lock hole of snap close end face just faces the bottom surface of reset guide post, waits for resetting of SR.
This earth leakage protective socket also comprises a normally closed switch; One end of this normally closed switch links to each other with the power firestreak/zero line of power input, and the other end links to each other with the zero-power line/live wire from magnetic test coil that passes the induction coil that is used to detect leakage current, be used to detect the low resistance fault through current-limiting resistance;
When the earth leakage protective socket power input links to each other with power line in the wall; And when earth leakage protective socket does not have end-of-life; Earth leakage protective socket produces the simulation leakage current automatically once connecting with the mains; Said resetting/the mechanical device that trips action waits for that SR resets, and the simulation leakage current that produces automatically simultaneously disappears.
After the power line in power input of the present invention and the wall connects, manually push earlier testing button/or need not to operate any parts and just can produce the simulation leakage current automatically, detect earth leakage protective socket of the present invention and whether still have creepage protection function.If earth leakage protective socket does not have end-of-life, still have creepage protection function, its inner snap close promptly is opened, and waits for that SR resets; At this moment, push SR, SR just can reset, and earth leakage protective socket has power supply output.Otherwise, if current leakage jack life termination, its inner snap close can not be opened; Stop SR to reset; SR will can't reset all the time, and earth leakage protective socket does not have power supply output all the time, and prompting user this earth leakage protective socket is end-of-life.Advantage of the present invention: safe in utilization, function is complete, 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. 4-1, Fig. 4-the 2nd, the annexation sketch map between power supply input sheet metal of the present invention, power supply output sheet metal, the elastic 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 A-A partial sectional view of Fig. 3, earth leakage protective socket power input not with wall in power line when being connected each module position concern sketch map;
Fig. 7-the 2nd, the A-A partial sectional view of Fig. 3; The earth leakage protective socket power input with wall in the moment of power line after connecting; Earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 7-the 3rd, the A-A partial sectional view of Fig. 3, each module position concerned sketch map when SR was pressed;
Fig. 7-the 4th, the A-A partial sectional view of Fig. 3, SR reset, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Each module position concerned sketch map when Fig. 7-the 5th, the A-A partial sectional view of Fig. 3, testing button were pressed the output of SR dropout supply socket non-transformer;
Fig. 8-the 1st, the power line in the B-B partial sectional view of Fig. 3, earth leakage protective socket power input and wall connect back each module position of moment and concern sketch map;
Fig. 8-the 2nd, the B-B partial sectional view of Fig. 3, earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 8-the 3rd, the B-B partial sectional view of Fig. 3, SR reset, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Fig. 6 A is the another kind of the present invention three-dimensional decomposition texture sketch map of mechanical device that resets/trip;
Fig. 7 A-1 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, the earth leakage protective socket power input not with wall in power line when being connected each module position concern sketch map;
Fig. 7 A-2 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A; The earth leakage protective socket power input with wall in the moment of power line after connecting; Earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 7 A-3 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and each module position concerned sketch map when SR was pressed;
Fig. 7 A-4 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and SR resets, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Fig. 7 A-5 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and each module position concerned sketch map when testing button was pressed the output of SR dropout supply socket non-transformer;
Fig. 8 A-1 is the B-B partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and the power line in earth leakage protective socket power input and the wall connects back each module position of moment and concerns sketch map;
Fig. 8 A-2 is the B-BA partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 8 A-3 is the B-B partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 A, and SR resets, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Fig. 6 B is the three-dimensional decomposition texture sketch map of another mechanical device that resets/trip of the present invention;
Fig. 7 B-1 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, the earth leakage protective socket power input not with wall in power line when being connected each module position concern sketch map;
Fig. 7 B-2 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B; The earth leakage protective socket power input with wall in the moment of power line after connecting; Earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 7 B-3 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and each module position concerned sketch map when SR was pressed;
Fig. 7 B-4 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and SR resets, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Fig. 7 B-5 is the A-A partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and each module position concerned sketch map when testing button was pressed the output of SR dropout supply socket non-transformer;
Fig. 8 B-1 is the B-B partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and the power line in earth leakage protective socket power input and the wall connects back each module position of moment and concerns sketch map;
Fig. 8 B-2 is the B-B partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and earth leakage protective socket is intact not to be had end-of-life, snap close to be opened to wait for that each module position concerned sketch map when SR resetted;
Fig. 8 B-3 is the B-B partial sectional view that earth leakage protective socket Fig. 3 of the mechanical device that resets/trip is installed shown in Fig. 6 B, and SR resets, and each module position concerned sketch map when earth leakage protective socket is in proper working order to have power supply output;
Fig. 9 is the control circuit physical circuit figure that the earth leakage protective socket of the shown in Figure 6 resetting/mechanical device that trips is installed;
Figure 10 is the control circuit physical circuit figure that the earth leakage protective socket of the mechanical device that resets/trip is installed shown in Fig. 6 A;
Figure 11 is the control circuit physical circuit figure that the earth leakage protective socket of the mechanical device that resets/trip is installed shown in Fig. 6 B.
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, metal ground connection mounting panel 1 is installed; Between middle layer bracket 3 that insulate and base 4, control circuit board 18 is installed.
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.SR (RESET) 8 and testing button (TEST) 7 are installed in SR hole 8-A and testing button hole 7-A, and SR 8 and testing button 7 pass metal ground connection mounting panel 1 and the middle layer bracket 3 of insulation 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, ground connection pressing plate 13-F, lead between the middle layer bracket 3 of loam cake 2 and insulation.On metal ground connection mounting panel 1, locate to be provided with ground connection blade 11,12 with the ground hole of loam cake 2 power supply output plugholes 5,6 is vertical up and down.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 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, 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 vertical up and down.
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 reliably, stably reset/or the function of threading off.
Like Fig. 1, shown in Figure 5, on control circuit board 18, be provided with two elasticity power firestreaks, zero line input sheet metal 51,50.One end downwarping, 90 degree of 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 power supply input sheet metal 51,50 is respectively equipped with moving contact 55 and 54.
The other end at circuit board 18 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 output sheet metal 81 is provided with two fixed contacts 53 and 16; End at zero-power line output sheet metal 80 is provided with two fixed contacts 52 and 15.
Shown in Fig. 1, Fig. 4-1, Fig. 4-2, the end riveted joint that is installed in the conductive metal sheet 14 of middle layer bracket 3 one sides has an elastic sheet metal 21, is provided with a moving contact 23 in the end of elastic sheet metal 21.Equally, the end riveted joint that is installed in the conductive metal sheet 13 of middle layer bracket 3 opposite sides 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 5, a pair of moving contact 55,54 on the elasticity power supply input sheet metal 51,50 and power supply are exported a pair of fixed contact 16,15 on the sheet metal 81,80 and are contacted or break off, and constitute one group of live wire, zero line mains switch; On the power supply output sheet metal 81,80 another contacts with a pair of moving contact 23,22 on the elastic sheet metal 21,20 fixed contact 53,52 or breaks off, and constitutes another and organizes live wire, zero line mains switch.Moving contact, fixed contact on above-mentioned power supply input sheet metal 51,50, the elastic sheet metal 21,20 that links to each other with conductive metal sheet 14,13, the power supply output sheet metal 81,80 constitute 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-3-1 among circuit diagram 9～Figure 11; KR-3-2, KR-2-1; KR-2-2.
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.Like Fig. 9～shown in Figure 11, 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 IC1 (model is RV4145) to leakage current by output voltage signal; The pin 5 output control signals of chip IC 1 make controllable silicon (SCR) V4 conducting; Making the action of resetting on the circuit board 18/mechanical device that trips through controllable silicon (SCR) V4, make SR 8 reset/or thread off, earth leakage protective socket has/or non-transformer output.
Fig. 6 be installed in the earth leakage protective socket, power supply input sheet metal 50,51 is connected with power supply output sheet metal 81,80, conductive metal sheet 13,14 electric power/or disconnection; Thereby, supply socket is had/the mechanical device structure sketch map that resets/trip of non-transformer output.Shown in Fig. 1, Fig. 5, Fig. 6, Fig. 7-1, Fig. 8-1, 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, tripping coil 26, with switch 66,67,88, the lock bolt 99 of SR 8 interlocks, push up excellent 7B.
" 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 to form and carry arm, and the pad 28A that resets is positioned at the below of SR 8, the top of " T " font release 28.Reset pad 28A and release 28 can be combined, and moves up and down (like Fig. 7-2) with release 28; Simultaneously, reset pad 28A again can with release 28 (like Fig. 7-1) separated from one another.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 26H of minimum removable point downwards that resets.
Shown in Fig. 8-1; When assembling release 28 and resetting pad 28A; With power supply import sheet metal 50,51, elastic sheet metal 20,21 is placed on the top that arm is carried in release 28 left and right sides respectively; The reset below of pad 28A makes power supply input sheet metal 50,51 carry arm and reset between the pad 28A at release about 28.In release 28 and SR 8 linkages from top to bottom, driving power supply input sheet metal 51,50 and elastic sheet metal 21,20 moves up and down.
Have a vertical clear opening 29A that reset guide post 35 is passed in the centre of the pad 28A that resets; Also have a central perforation longitudinally 29 in the centre of release 28; Shown in Fig. 7-1, Fig. 8-1, 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.As shown in Figure 6, 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 SR 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 SR 8 quickly and reliably thread off, and moving contact and fixed contact are broken off apace, thereby, prolong useful life of earth leakage protective socket greatly.
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 the snap close 30 movably processed, be provided with a bonnet lock hole 31 at the end face of snap close 30 by metal material.Shown in Fig. 7-1; The earth leakage protective socket power input not with wall in power line when being connected; 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 lateral wall 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 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. 7-1, be provided with draw-in groove 31A. at the leading section of snap close 30.Be placed with the lock bolt 99 of a hollow out perpendicular to the leading section of snap close 30, be installed with plate 99B in the inside at lock bolt 99 hollow out positions.Below lock bolt 99, be placed with a spring 98A, above lock bolt 99, be placed with an excellent 7B in top.Push up and be with spring 7C on the excellent 7B, push up the below that excellent 7B is positioned at SR 8 side plate 8B, the bottom 7F that pushes up excellent 7B can be against on the top 99A of lock bolt 99.
Shown in Fig. 7-1; The power input of earth leakage protective socket not with wall in power line when being connected; Earth leakage protective socket is in initial condition, and snap close 30 inserts the hollow-out parts of lock bolt 99, and is shelved on the plate 99B; The spring 98A of lock bolt 99 belows is compressed, and the bottom surface 41 of reset guide post 35 is the dislocation shape with the bonnet lock hole 31 of snap close 30 end faces.
After the power input of earth leakage protective socket and the power line in the wall connect, manually or earth leakage protective socket produce the detection electric current automatically, detect whether end-of-life of earth leakage protective socket.If earth leakage protective socket does not have end-of-life, then there is electric current to flow through in the tripping coil 26, produce magnetic field in the tripping coil 26, shown in Fig. 7-2, be built in iron core 42 actions in the tripping coil 26, iron core 42 promotes snap close 30 and moves; Simultaneously; Under the effect of spring 98A, lock bolt 99 moves up, and the plate 99B at lock bolt 99 hollow out positions is inserted in the draw-in groove 31A of snap close 30 leading sections; Make snap close 30 be fixed on this position; At this moment, the bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35, waits for resetting of SR 8.
Shown in Fig. 7-3, push SR 8, reset guide post 35 successfully passes the bonnet lock hole 31 of snap close 30 end faces.Simultaneously, the side plate 8B of SR 8 pushes up excellent 7B and pushes lock bolt 99 by the excellent 7B that bears down on one, and lock bolt 99 is moved down, and the plate 99B at lock bolt 99 hollow out positions breaks away from the draw-in groove 31A of snap close 30 leading sections.
Shown in Fig. 7-4; Discharge SR 8; The locked groove 36 of reset guide post 35 is stuck in the bonnet lock hole 31 of snap close 30; SR 8 resets, and the moving contact 55,54 on the power supply input sheet metal 51,50 contacts conducting with the fixed contact 16,15 that power supply is exported on the sheet metal 81,80, and the fixed contact 53,52 on the power supply output sheet metal 81,80 contacts conducting with the moving contact 23,22 on the conductive metal sheet 14,13; Thereby, make the load end of earth leakage protective socket and the jack of receptacle face that power supply output arranged.
Shown in Fig. 7-5, have at earth leakage protective socket under the state of power supply output, when wanting to cut off the power supply output of earth leakage protective socket, push testing button 7, the test sheet metal 46 of testing button 7 belows is contacted with current-limiting resistance 47.The other end of test sheet metal 46 links to each other with the live wire/zero line of power output end, and the other end of current-limiting resistance 47 links to each other with the zero line/live wire of power input, and the live wire/zero line of power output end links to each other with the zero line/live wire of power input with current-limiting resistance 47 through the test sheet metal 46 of contact; Form the loop, manually produce the simulation leakage current, making in the tripping coil 26 has electric current to flow through; Produce magnetic field; Built-in iron core 26 actions wherein promote snap close 30 and move, and the locked groove 36 of reset guide post 35 breaks away from the bonnet lock hole 31 of snap close 30 end faces; SR 8 is threaded off, the earth leakage protective socket tripping operation; Simultaneously, in the process that snap close 30 moves, under the effect of spring 98A; Lock bolt 99 moves up; The plate 99B at lock bolt 99 hollow out positions is inserted again in the draw-in groove 31A of snap close 30 leading sections, make snap close 30 be fixed on this position, at this moment; The bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35, waits for resetting of SR 8.
Shown in Fig. 6, Fig. 8-1, be provided with a switch (the K switch R-6 among Fig. 9, Figure 11) that links with SR (RESET) 8 on the next door of release 28, this switch is made up of elastic sheet metal 66,67,88.Elastic sheet metal 66 is positioned at below, and in the middle of sheet metal 88 was positioned at, sheet metal 67 was positioned at the top.Upper surface at elastic sheet metal 66 is provided with a contact 68C; Lower surface at sheet metal 67 is provided with a contact 67A; Upper surface at sheet metal 88 is provided with a contact 68A, is provided with a contact 68B at the lower surface of sheet metal 88.Sheet metal 66 constitutes a pair of normally closed switch with sheet metal 88, and sheet metal 88 constitutes a pair of normal open switch with sheet metal 67.When SR 8 is in trip status; The normally closed switch that sheet metal 66 and 88 constitutes is closure state; The normal open switch that sheet metal 88 and 67 constitutes is off-state; When SR 8 was in reset mode, the normally closed switch that sheet metal 66 and 88 constitutes was off-state, and the normal open switch that sheet metal 88 and 67 constitutes is closure state.
Like Fig. 8-1 and shown in Figure 9; When SR RESET is in trip status; The contact 68C of sheet metal 66 upper surfaces contacts with the contact 68B of sheet metal 88 lower surfaces, and the anode of controllable silicon V4 links to each other with the power input live wire through sheet metal 66 and 88, tripping coil L3 (26).
Like Fig. 8-2 and shown in Figure 9; There is not an end-of-life in that earth leakage protective socket is intact; Snap close is opened and waits for when SR resets; The contact 68C of sheet metal 66 upper surfaces still contacts conducting with the contact 68B of sheet metal 88 lower surfaces, and the anode of controllable silicon V4 still links to each other with the power input live wire through sheet metal 66 and 88, tripping coil L3 (26).
Like Fig. 8-3 and shown in Figure 9; When SR resets; Earth leakage protective socket is in proper working order when power supply output is arranged; The contact 68B of the contact 68C of sheet metal 66 upper surfaces and sheet metal 88 lower surfaces breaks off, and the contact 68A of sheet metal 88 upper surfaces contacts conducting with the contact 67A of sheet metal 67 lower surfaces, and the anode of controllable silicon V4 links to each other with the power input live wire through sheet metal 67 and 88, tripping coil L3 (26).
Fig. 9 is the control circuit physical circuit figure that the earth leakage protective socket of the shown in Figure 6 resetting/mechanical device that trips is installed.As shown in the figure, this leakage current detection protection circuit comprises the induction coil L1 (1000: 1) that is used to detect leakage current, be used to detect the low resistance fault from magnetic test coil L2 (200: 1), control chip IC1 (RV4145), the tripping coil L3 (SOL) that is built-in with iron core, controllable silicon V4, with K switch R-5, halfwave rectifier diode V1, the power supply output indicator V3 of testing button TEST interlock.
The live wire HOT of leakage current detection protection circuit power input LINE, zero line WHITE pass the induction coil L1 (1000: 1) that is used to detect leakage current, be used to detect the low resistance fault behind magnetic test coil L2 (200: 1), through with the single-phase three-wire power supply output plughole on the mains switch KR-2-1 of supply socket/plug SR RESET interlock, KR-2-2 and supply socket surface in live wire, zero line output conduction sleeve link to each other; Simultaneously; The live wire HOT of leakage current detection protection circuit power input LINE, zero line WHITE pass the induction coil L1 (1000: 1) that is used to detect leakage current, be used to detect the low resistance fault behind magnetic test coil L2 (200: 1), link to each other with live wire HOT, the zero line WHITE of supply socket/plug-in power pack output (load end) LOAD with K switch R-3-1, the KR-3-2 that SR RESET links through another group.
Be used for the differential differentiating transformer 19 that detects the induction coil L1 (1000: 1) of leakage current and be used to detect the low resistance fault from magnetic test coil L2 (200: 1) pie graph 1, Fig. 5.The signal output part of coil L1, L2 links to each other with the signal input part 1,2,3,7 of control chip IC1, and the control signal output ends 5 of control chip IC1 links to each other with the trigger electrode of controllable silicon V4.The working power input 6 of control chip IC1 links to each other with the live wire HOT of power input LINE through resistance R 1, halfwave rectifier diode V1, tripping coil L3.The place of working pin 4 of control chip IC1 links to each other with the zero line WHITE of power input LINE.
The anode of controllable silicon V4 links to each other with the live wire HOT of power input LINE through the switch 66,67,88 with tripping coil L3 interlock, and the negative electrode of controllable silicon V4 links to each other with the zero line WHITE of power input LINE.
Link to each other with the zero line WHITE of power input LINE through resistance R 4 with the end of the K switch R-5 of testing button TEST interlock; The other end links to each other with the power firestreak HOT from magnetic test coil L2 that passes the induction coil L1 that is used to detect leakage current, be used to detect the low resistance fault, and simultaneously, the other end of K switch R-5 also links to each other with the live wire HOT of power output end.
As shown in Figure 9; After the power input of supply socket/attaching plug that leakage current detection protection circuit is installed and the power line in the wall connect; Push testing button TEST earlier, make K switch R-5 closed, the live wire HOT of power input LINE is through induction coil L1, link to each other with the zero line WHITE of power input LINE from magnetic test coil L2, closed K switch R-5, resistance R 4; Form the closed-loop path, manually produce the simulation leakage current.
At this moment; If leakage current detection protection circuit is intact; Do not have end-of-life, still have the current leakage detection protection function, the signal output part from magnetic test coil L2 (200: 1) that then is used to detect the induction coil L1 (1000: 1) of leakage current and is used to detect the low resistance fault outputs signal to control chip IC1; The pin 5 output control signals of control chip IC1 trigger controllable silicon V4.Because the anode of controllable silicon V4 links to each other with power firestreak through sheet metal 66,88, the tripping coil L3 of contact, the negative electrode of controllable silicon V4 links to each other with zero-power line, and the triggering of controllable silicon V4 is high level very; So the controllable silicon V4 conducting that is triggered has big electric current to flow through in the tripping coil L3; Produce magnetic field in the tripping coil L3, be built in the iron core action in the tripping coil L3, make mechanical device (as shown in Figure 6) action that resets/trip in supply socket/plug; Snap close 30 in earth leakage protective socket/attaching plug is opened; Shown in Fig. 7-2, guiding lock 35 is in line with lockhole 31, waits for that SR RESET resets.Discharge testing button TEST, K switch R-5 breaks off, and the simulation leakage current disappears.
At this moment; Shown in Fig. 7-3, push SR RESET, SR RESET resets; Shown in Fig. 7-4; Closed with K switch R-2-1, KR-2-2, KR-3-1, the KR-3-2 of SR RESET interlock, the power supply output plughole on supply socket/plug load end LOAD and supply socket surface has power supply output, and the power supply output indicator V3 that is connected in parallel between supply socket/plug-in power pack output end live wire, zero line is bright.
As shown in Figure 9, after the power input of supply socket/attaching plug that leakage current detection protection circuit is installed and the power line in the wall connect, if at first do not push testing button TEST; At first do not produce the simulation leakage current, making in the tripping coil L3 has electric current to flow through, and produces magnetic field; Make built-in iron core action wherein; Thereby make the mechanical device action that resets/trip in supply socket/plug, snap close 30 is opened, wait SR RESET reset (shown in Fig. 7-2); SR RESET will be prevented from resetting all the time, earth leakage protective socket non-transformer output all the time.
Fig. 6 A is the another kind of the present invention three-dimensional decomposition texture sketch map of mechanical device that resets/trip.Shown in Fig. 6 A, Fig. 7 A-1, Fig. 8 A-1, 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, tripping coil 26, with normally closed switch 72,72A, the lock bolt 99 of tripping coil 26 interlocks, push up excellent 7B.
The difference of resetting shown in Fig. 6 A/trip mechanical device and shown in Figure 6 resetting/mechanical device that trips is: omitted the switch 66,67,88 that links with SR 8, increased normally closed switch 72,72A with tripping coil 26 interlocks.
Like Fig. 6 A, Fig. 7 A-1, Fig. 8 A-1, shown in Figure 10, the normally closed switch KR-4 (referring to Figure 10, Figure 11) that links with tripping coil 26 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 contacting with electric contact 72A or gap is provided with a contact point 72C.Electric contact 72A is welded on the circuit board, links to each other with the power input zero line from magnetic test coil L2 (200: 1) that passes the induction coil L1 (1000: 1) that is used to detect leakage current, be used to detect the low resistance fault through current-limiting resistance R3.Elastic sheet metal 72 and electric contact 72A are positioned at the below of lock bolt 99.
Like Fig. 7 A-1, shown in Figure 10; The power input of earth leakage protective socket not with wall in power line when linking to each other; Earth leakage protective socket is in initial condition, and snap close 30 inserts the hollow-out parts of lock bolt 99, and is shelved on the plate 99B; The elastic sheet metal 72 and the electric contact 72A of lock bolt 99 belows are crimped and touch, and K switch R-4 is closed; The bottom surface 41 of reset guide post 35 is the dislocation shape with the bonnet lock hole 31 of snap close 30 end faces.
After the power input of earth leakage protective socket and the power line in the wall connect; Because K switch R-4 is closed; The live wire of power input is through tripping coil 26 (L3 among Figure 10), closed K switch R-4, current-limiting resistance R3 and pass the induction coil L1 (1000: 1) that is used to detect leakage current, the power input zero line from magnetic test coil L2 (200: 1) that is used to detect the low resistance fault links to each other; Form the closed-loop path; 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, then there is electric current to flow through in the tripping coil 26, produce magnetic field in the tripping coil 26, shown in Fig. 7 A-2, be built in iron core 42 actions in the tripping coil 26, iron core 42 promotes snap close 30 and moves; Simultaneously; Elastic sheet metal 72 pops up under the effect of self, promotes lock bolt 99 and moves up, and the plate 99B at lock bolt 99 hollow out positions is inserted in the draw-in groove 31A of snap close 30 leading sections; Make snap close 30 be fixed on this position; At this moment, the bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35, waits for resetting of SR 8.Because elastic sheet metal 72 is upspring, sheet metal 72 breaks off with electric contact 72A, and K switch R-4 breaks off, and the simulation leakage current disappears.
Shown in Fig. 7 A-3, push SR 8, reset guide post 35 successfully passes the bonnet lock hole 31 of snap close 30 end faces.Simultaneously, the side plate 8B of SR 8 pushes up excellent 7B and pushes lock bolt 99 by the excellent 7B that bears down on one, and lock bolt 99 is moved down, and the plate 99B at lock bolt 99 hollow out positions breaks away from the draw-in groove 31A of snap close 30 leading sections.
Shown in Fig. 7 A-4; Discharge SR 8; The locked groove 36 of reset guide post 35 is stuck in the bonnet lock hole 31 of snap close 30; SR 8 resets, and the moving contact 55,54 on the power supply input sheet metal 51,50 contacts conducting with the fixed contact 16,15 that power supply is exported on the sheet metal 81,80, and the fixed contact 53,52 on the power supply output sheet metal 81,80 contacts conducting with the moving contact 23,22 on the conductive metal sheet 14,13; Thereby, make the load end of earth leakage protective socket and the jack of receptacle face that power supply output arranged.
Shown in Fig. 7 A-5, have at earth leakage protective socket under the state of power supply output, when wanting to cut off the power supply output of earth leakage protective socket, push testing button 7, the test sheet metal 46 of testing button 7 belows is contacted with current-limiting resistance 47.Shown in figure 10, test sheet metal 46 constitutes K switch R-5 with current-limiting resistance 47 (resistance R 4 among Figure 10), and the other end of test sheet metal 46 links to each other with the live wire/zero line of power output end; The other end of current-limiting resistance 47 links to each other with the zero line/live wire of power input, and the live wire/zero line of power output end links to each other with the zero line/live wire of power input with current-limiting resistance 47 through the test sheet metal 46 of contact, forms the loop; Manually produce the simulation leakage current; Making in the tripping coil 26 has electric current to flow through, and produces magnetic field, built-in iron core 26 actions wherein; Promoting snap close 30 moves; The locked groove 36 of reset guide post 35 breaks away from the bonnet lock hole 31 of snap close 30 end faces, and SR 8 is threaded off, the earth leakage protective socket tripping operation; Simultaneously; In the process that snap close 30 moves, lock bolt 99 moves up, and the plate 99B at lock bolt 99 hollow out positions is inserted in the draw-in groove 31A of snap close 30 leading sections; Make snap close 30 be fixed on this position; At this moment, the bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35, waits for resetting of SR 8.
Like Fig. 8 A-1 and shown in Figure 10, the power input of earth leakage protective socket not with wall in power line when linking to each other, earth leakage protective socket is in initial condition, elastic sheet metal 72 contacts with electric contact 72A, with the K switch R-4 of tripping coil interlock be closure state.
After the power input of earth leakage protective socket and the power line in the wall connect; Because K switch R-4 is closed; The live wire of power input is through tripping coil 26 (L3 among Figure 10), closed K switch R-4, current-limiting resistance R3 and pass the induction coil L1 (1000: 1) that is used to detect leakage current, the power input zero line from magnetic test coil L2 (200: 1) that is used to detect the low resistance fault links to each other; Form the closed-loop path; Automatically produce the simulation leakage current, detect whether end-of-life of earth leakage protective socket.
Like Fig. 8 A-2 and shown in Figure 10,, there is electric current to produce in the tripping coil L3 in that earth leakage protective socket is intact when not having end-of-life; Produce magnetic field, built-in iron core 26 actions wherein promote snap close 30 and move; Snap close 30 is opened and waits for that SR resets; At this moment, break off with normally closed switch KR-4 tripping coil L3 interlock, that be made up of elastic sheet metal 72 and electric contact 72A, the simulation leakage current disappears.
Like Fig. 8 A-3 and shown in Figure 10, when SR resets, earth leakage protective socket is in proper working order when power supply output is arranged, and still is in off-state with tripping coil L3 normally closed switch KR-4 interlock, that be made up of elastic sheet metal 72 and electric contact 72A.
Fig. 6 B is the three-dimensional decomposition texture sketch map of another mechanical device that resets/trip of the present invention.Shown in Fig. 6 B, Fig. 7 B-1, Fig. 8 B-1, 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, tripping coil 26, normally closed switch 72,72A with tripping coil 26 interlocks, with switch 66,67,88, the lock bolt 99 of SR 8 interlocks, push up excellent 7B.
Like Fig. 6 B, Fig. 7 B-1, shown in Figure 11, the normally closed switch KR-4 (referring to Figure 11) that links with tripping coil 26 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 11) 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 contacting with electric contact 72A or gap is provided with a contact point 72C.Electric contact 72A is welded on the circuit board, links to each other with the power input zero line from magnetic test coil L2 (200: 1) that passes the induction coil L1 (1000: 1) that is used to detect leakage current, be used to detect the low resistance fault through current-limiting resistance R3.Elastic sheet metal 72 and electric contact 72A are positioned at the below of lock bolt 99.
Shown in Fig. 6 B, Fig. 8 B-1, be provided with a switch that links with SR (RESET) 8 on the next door of release 28, this switch is made up of elastic sheet metal 66,67,88.Elastic sheet metal 66 is positioned at below, and in the middle of sheet metal 88 was positioned at, sheet metal 67 was positioned at the top.Upper surface at elastic sheet metal 66 is provided with a contact 68C; Lower surface at sheet metal 67 is provided with a contact 67A; Upper surface at sheet metal 88 is provided with a contact 68A, is provided with a contact 68B at the lower surface of sheet metal 88.Sheet metal 66 constitutes a pair of normally closed switch with sheet metal 88, and sheet metal 88 constitutes a pair of normal open switch with sheet metal 67.When SR 8 is in trip status; The normally closed switch that sheet metal 66 and 88 constitutes is closure state; The normal open switch that sheet metal 88 and 67 constitutes is off-state; When SR 8 was in reset mode, the normally closed switch that sheet metal 66 and 88 constitutes was off-state, and the normal open switch that sheet metal 88 and 67 constitutes is closure state.
Like Fig. 7 B-1, shown in Figure 11; The power input of earth leakage protective socket not with wall in power line when linking to each other; Earth leakage protective socket is in initial condition, and snap close 30 inserts the hollow-out parts of lock bolt 99, and is shelved on the plate 99B; The elastic sheet metal 72 and the electric contact 72A of lock bolt 99 belows are crimped and touch, and K switch R-4 is closed; The bottom surface 41 of reset guide post 35 is the dislocation shape with the bonnet lock hole 31 of snap close 30 end faces.Shown in Fig. 8 B-1; Sheet metal 66 contacts conducting with 88, and the normally closed switch of formation is closure state, and sheet metal 88 and 67 breaks off; The normal open switch that constitutes is off-state, and the anode of controllable silicon V4 links to each other with the power input live wire through sheet metal 66 and 88, tripping coil L3 (26).
After the power input of earth leakage protective socket and the power line in the wall connect; Because K switch R-4 is closed; The live wire of power input is through tripping coil 26 (L3 among Figure 11), closed K switch R-4, current-limiting resistance R3 and pass the induction coil L1 (1000: 1) that is used to detect leakage current, the power input zero line from magnetic test coil L2 (200: 1) that is used to detect the low resistance fault links to each other; Form the closed-loop path; 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, then there is electric current to flow through in the tripping coil 26, produce magnetic field in the tripping coil 26, shown in Fig. 7 B-2, be built in iron core 42 actions in the tripping coil 26, iron core 42 promotes snap close 30 and moves; Simultaneously; Elastic sheet metal 72 pops up under the effect of self, promotes lock bolt 99 and moves up, and the plate 99B at lock bolt 99 hollow out positions is inserted in the draw-in groove 31A of snap close 30 leading sections; Make snap close 30 be fixed on this position; At this moment, the bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35, waits for resetting of SR 8.Because elastic sheet metal 72 is upspring, sheet metal 72 breaks off with electric contact 72A, and K switch R-4 breaks off, and the simulation leakage current disappears.At this moment; Because SR 8 still is in trip status; Be opened when waiting for that SR resets at snap close 30 like Fig. 8 B-2; The contact 68C of sheet metal 66 upper surfaces still contacts conducting with the contact 68B of sheet metal 88 lower surfaces, and the anode of controllable silicon V4 still links to each other with the power input live wire through sheet metal 66 and 88, tripping coil L3 (26).
Shown in Fig. 7 B-3, push SR 8, reset guide post 35 successfully passes the bonnet lock hole 31 of snap close 30 end faces.Simultaneously, the side plate 8B of SR 8 pushes up excellent 7B and pushes lock bolt 99 by the excellent 7B that bears down on one, and lock bolt 99 is moved down, and the plate 99B at lock bolt 99 hollow out positions breaks away from the draw-in groove 31A of snap close 30 leading sections.
Shown in Fig. 7 B-4; Discharge SR 8; The locked groove 36 of reset guide post 35 is stuck in the bonnet lock hole 31 of snap close 30; SR 8 resets, and the moving contact 55,54 on the power supply input sheet metal 51,50 contacts conducting with the fixed contact 16,15 that power supply is exported on the sheet metal 81,80, and the fixed contact 53,52 on the power supply output sheet metal 81,80 contacts conducting with the moving contact 23,22 on the conductive metal sheet 14,13; Thereby, make the load end of earth leakage protective socket and the jack of receptacle face that power supply output arranged.Shown in Fig. 8 B-3; When SR resets; Earth leakage protective socket is in proper working order when power supply output is arranged; The contact 68B of the contact 68C of sheet metal 66 upper surfaces and sheet metal 88 lower surfaces breaks off, and the contact 68A of sheet metal 88 upper surfaces contacts conducting with the contact 67A of sheet metal 67 lower surfaces, and the anode of controllable silicon V4 links to each other with the power input live wire through sheet metal 67 and 88, tripping coil L3 (26).
Shown in Fig. 7 B-5, have at earth leakage protective socket under the state of power supply output, when wanting to cut off the power supply output of earth leakage protective socket, push testing button 7, the test sheet metal 46 of testing button 7 belows is contacted with current-limiting resistance 47.Shown in figure 11, test sheet metal 46 constitutes K switch R-5 with current-limiting resistance 47 (resistance R 4 among Figure 11), and the other end of test sheet metal 46 links to each other with the live wire/zero line of power output end; The other end of current-limiting resistance 47 links to each other with the zero line/live wire of power input, and the live wire/zero line of power output end links to each other with the zero line/live wire of power input with current-limiting resistance 47 through the test sheet metal 46 of contact, forms the loop; Manually produce the simulation leakage current; Making in the tripping coil 26 has electric current to flow through, and produces magnetic field, built-in iron core 26 actions wherein; Promoting snap close 30 moves; The locked groove 36 of reset guide post 35 breaks away from the bonnet lock hole 31 of snap close 30 end faces, and SR 8 is threaded off, the earth leakage protective socket tripping operation; Simultaneously, in the process that snap close 30 moves, lock bolt 99 moves up; The plate 99B at lock bolt 99 hollow out positions is inserted in the draw-in groove 31A of snap close 30 leading sections; Make snap close 30 be fixed on this position, at this moment, the bonnet lock hole 31 of snap close 30 end faces just faces the bottom surface 41 of reset guide post 35; Wait for resetting of SR 8, shown in Fig. 7 B-2.
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 (6)
1. 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, on said control circuit board, be provided with the mechanical device that resets/trip that can make power supply input sheet metal and power supply output sheet metal realization electric power be connected/break off;
This mechanical device that resets/trip comprises the reset guide post (35) that is embedded in below the earth leakage protective socket SR (8), is enclosed within back-moving spring (91), fast trip spring (66-A), the pad that resets (28A), " T " font release (28), snap close (30), tripping coil (26) on the reset guide post (35), it is characterized in that:
This mechanical device that resets/trip also comprises lock bolt (99), the top rod (7B) of hollow out;
Leading section at said snap close (30) is provided with draw-in groove (31A);
The lock bolt of said hollow out (99) is placed perpendicular to the leading section of snap close (30), is installed with plate (99B) in the inside at lock bolt (99) hollow out position; Be placed with a flexible member in the below of lock bolt (99), be placed with a said top rod (7B) in the top of lock bolt (99);
Be with spring (7C) on the said top rod (7B), top rod (7B) is positioned at the below of SR (8) side plate (8B), and the bottom (7F) of top rod (7B) can be against on the top (99A) of lock bolt (99);
The power input of earth leakage protective socket not with wall in power line when linking to each other; Earth leakage protective socket is in initial condition; Said snap close (30) inserts the hollow-out parts of said lock bolt (99); And be shelved on the said plate (99B), the flexible member of lock bolt (99) below is compressed, and the bottom surface (41) of reset guide post (35) is the dislocation shape with the bonnet lock hole (31) of snap close (30) end face;
After the power input of earth leakage protective socket and the power line in the wall connect; If earth leakage protective socket does not have end-of-life; The plate (99B) at said lock bolt (99) hollow out position inserts in the draw-in groove (31A) of snap close (30) leading section; Snap close (30) is fixed, and the bonnet lock hole (31) of snap close (30) end face just faces the bottom surface (41) of reset guide post (35), waits for resetting of SR (8).
2. earth leakage protective socket according to claim 1; It is characterized in that: this earth leakage protective socket also comprises a normally closed switch; One end of this normally closed switch links to each other with the power firestreak/zero line of power input, and the other end links to each other with the zero-power line/live wire from magnetic test coil (L2) that passes the induction coil (L1) that is used to detect leakage current, be used to detect the low resistance fault through current-limiting resistance;
When the earth leakage protective socket power input links to each other with power line in the wall; And when earth leakage protective socket does not have end-of-life; Earth leakage protective socket produces the simulation leakage current automatically once connecting with the mains; Said resetting/the mechanical device that trips action waits for that SR resets, and the simulation leakage current that produces automatically simultaneously disappears.
3. earth leakage protective socket according to claim 2 is characterized in that: said normally closed switch 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); Electric contact (72A) is welded on the circuit board, links to each other with the power input zero line from magnetic test coil (L2) that passes the induction coil (L1) that is used to detect leakage current, be used to detect the low resistance fault through current-limiting resistance (R3);
Said elastic sheet metal (72) and electric contact (72A) are positioned at the below of said lock bolt (99);
The earth leakage protective socket power input not with wall in power line when linking to each other; Earth leakage protective socket is in initial condition; Said snap close (30) inserts the hollow-out parts of lock bolt (99); And be shelved on the plate (99B), the elastic sheet metal (72) of lock bolt (99) below and electric contact (72A) are crimped and touch normally closed switch (KR-4) closure;
After the power input of earth leakage protective socket and the power line in the wall connect; Automatically produce the simulation leakage current; If earth leakage protective socket does not have end-of-life; Said elastic sheet metal (72) pops up under the effect of self, and sheet metal (72) breaks off with electric contact (72A), and normally closed switch (KR-4) changes off-state into by closure state.
4. earth leakage protective socket according to claim 1 is characterized in that: after the power input of earth leakage protective socket and the power line in the wall connect, push testing button earlier, SR is pressed in the back, and SR resets; Otherwise SR is prevented from resetting.
5. earth leakage protective socket according to claim 4 is characterized in that: below this earth leakage protective socket testing button, be placed with a test sheet metal (46) and current-limiting resistance (47);
One end of test sheet metal (46) is unsettled, waits for contacting with said current-limiting resistance (47), and the other end links to each other with the power firestreak/zero line from magnetic test coil (L2) that passes the induction coil (L1) that is used to detect leakage current, be used to detect the low resistance fault;
One end of current-limiting resistance (47) is unsettled, waits for contacting with said test sheet metal (46), and the other end links to each other with the zero line/live wire of power input;
After the power input of earth leakage protective socket and the power line in the wall connect, push testing button earlier, SR is pressed in the back, and SR resets; Otherwise SR is prevented from resetting.
6. according to claim 1 or 2 or 3 or 4 or 5 described earth leakage protective sockets; It is characterized in that: the said resetting/mechanical device that trips also comprises a switch that links with SR (8), and this switch is made up of the 3rd elastic sheet metal (66), the 4th elastic sheet metal (67), the 5th elastic sheet metal (88);
Wherein, the 3rd elastic sheet metal (66) is positioned at below, and in the middle of the 5th elastic sheet metal (88) was positioned at, the 4th elastic sheet metal (67) was positioned at the top;
The upper surface of the 3rd elastic sheet metal (66) of below is provided with a contact (68C); The lower surface of the 4th elastic sheet metal (67) of the top is provided with a contact (67A); The upper surface that is positioned at the 5th elastic sheet metal (88) in centre position is provided with a contact (68A), and lower surface is provided with a contact (68B);
The 3rd elastic sheet metal (66) of below constitutes a pair of normally closed switch with the 5th elastic sheet metal (88) in centre position, and the 5th elastic sheet metal (88) in centre position constitutes a pair of normal open switch with the 4th elastic sheet metal (67) of the top;
When SR (8) when being in trip status, normally closed switch is closure state, and normal open switch is off-state, and the anode of the controllable silicon on the control circuit board (V4) links to each other with the power input live wire through said normally closed switch, tripping coil (26);
When SR (8) when being in reset mode, normally closed switch is off-state, and normal open switch is closure state, and the anode of the controllable silicon on the control circuit board (V4) links to each other with the power input live wire through said normal open switch, tripping coil (26).
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| CN 200910083524 CN101882732B (en) | 2009-05-08 | 2009-05-08 | Leakage protection socket |
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| CN101882732B true CN101882732B (en) | 2012-12-05 |
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| CN102176574B (en) * | 2011-01-07 | 2013-03-27 | 黄华道 | Improved earth leakage protection socket with baffle latching mechanism |
| CN102882043A (en) * | 2012-10-11 | 2013-01-16 | 黄德富 | Electric leakage protection socket with integrated baffle plate locking mechanism |
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|---|---|---|---|---|
| CN200994025Y (en) * | 2006-01-11 | 2007-12-19 | 黄华道 | Leakage protection socket |
| CN101174746A (en) * | 2006-11-03 | 2008-05-07 | 黄华道 | Creepage protecting socket with life end checking function |
| CN201038480Y (en) * | 2007-02-15 | 2008-03-19 | 黄华道 | Creepage protecting socket |
| CN201549722U (en) * | 2009-05-08 | 2010-08-11 | 黄华道 | Electricity leakage protection socket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101882732A (en) | 2010-11-10 |
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