CN200972969Y - Leakage protection socket - Google Patents
Leakage protection socket Download PDFInfo
- Publication number
- CN200972969Y CN200972969Y CN 200620148728 CN200620148728U CN200972969Y CN 200972969 Y CN200972969 Y CN 200972969Y CN 200620148728 CN200620148728 CN 200620148728 CN 200620148728 U CN200620148728 U CN 200620148728U CN 200972969 Y CN200972969 Y CN 200972969Y
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- China
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- power supply
- moving contact
- sheet metal
- earth leakage
- leakage protective
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- Expired - Lifetime
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Abstract
The utility model discloses a current leakage protection socket capable of automatic service life termination detection and the detection result display and is characterized in that the power supply input metal sheet is provided with four dynamic contact points; the power supply output electric conductor and the power supply output metal sheet are also provided with four static contact points; above four dynamic and static contact points compose four pairs of paralleled power supply switches; the current leakage protection socket is also provided with a tripping operation device that enables the above four dynamic and static contact points to contact/or break off; the circuit board is also provided with the service life termination detection circuit; when the socket is connected into the power supply, the socket can automatically conduct detection with current leakage protection function. If the service life of the socket is terminated, the restoration push-button restoration is impeded, so that the load end of the socket and the power supply output orifice have no power supply output. Then the service life is displayed through the failure situation indicating lamp to remind the user to timely replace the current leakage protection socket. The utility model has complete functions and high safety and can well guarantee personal safety of the user and safety of the electrical appliance.
Description
Technical field
The utility model relates to a kind of supply socket with creepage protection function, refers to a kind of earth leakage protective socket that any parts just can carry out life-span stop detection to supply socket automatically and show testing result that need not to operate especially; In addition, this earth leakage protective socket can also be threaded off by force by mechanical structure, cuts off the power supply output of socket.
Background technology
Along with the continuous development of earth leakage protective socket (being called for short GFCI) industry, people require more and more higher to the safety in utilization of earth leakage protective socket.Hope is in the earth leakage protective socket use, and its inner components and parts lost efficacy when its end-of-life, during the forfeiture creepage protection function, can in time remind the user, changes new product.
Yet; common in the market earth leakage protective socket does not have life end checking function basically; whether the user can't detect its end-of-life before using earth leakage protective socket; so; often occur when earth leakage protective socket end-of-life; the user is still still unaware; continue to use; push its reset button; reset button still can reset; the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face still has power supply output, misleads the user and continues to use.When leaky occurring, because this earth leakage protective socket end-of-life has not had any protective effect, so very easily cause 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 utility model provide a kind of need not to operate any parts just can be automatically to earth leakage protective socket whether still have creepage protection function promptly whether end-of-life detect and show the earth leakage protective socket of testing result.When the earth leakage protective socket inner member is intact, can set up correct reset mechanism automatically reset button is resetted, after resetting, normal condition indicator light Chang Liang illustrates that earth leakage protective operation can operate as normal; When earth leakage protective socket inner member open circuit or short circuit are end-of-life; the utility model stops reset button to reset; make the load output of earth leakage protective socket and the single-phase three-wire power supply output plughole of receptacle face all not have power supply output; show earth leakage protective socket end-of-life by the malfunction indicator light simultaneously; remind the user in time to change new product, when avoiding leaky occurring again because of earth leakage protective socket end-of-life the generation of dead accident but its user who still has power supply output to cause gets an electric shock.
Another purpose of the present utility model provides a kind of earth leakage protective socket with mechanical tripping function.When the inefficacy of the components and parts in the earth leakage protective socket is end-of-life, can make earth leakage protective socket tripping operation/dropout mechanically, cut off its power supply output by force.
For achieving the above object, the utility model by the following technical solutions: a kind of earth leakage protective socket, it is by housing and be installed in the earth leakage protective socket realized in the housing and have/control circuit board of non-transformer output constitutes;
Described housing is combined by loam cake, base and the insulation middle layer bracket between loam cake, base; Be provided with the power output socket hole last covering, be provided with a pair of power supply input wires screw and a pair of power supply output connection screw in the base shell both sides; Be respectively equipped with power firestreak, zero line output conductor in insulation middle layer bracket both sides, on this power supply output conductor with loam cake on power output socket null line hole, corresponding position, live wire hole be provided with sheet clip leaf wing; Both sides are provided with a pair of power firestreak that links to each other with power supply output connection screw, zero line output sheet metal in base; It is characterized in that:
Differential differentiating transformer that a pair of elasticity power firestreak, zero line input sheet metal, one be used to detect leakage current is installed on described control circuit board and controls this elasticity power firestreak, zero line input sheet metal and contact with power supply output conductor, power supply output sheet metal/or the tripgear of disconnection;
Described elasticity power firestreak, zero line input sheet metal one end are bent downwardly 90 degree, pass differential differentiating transformer and be welded on the electric network plate and link to each other, link to each other with power firestreak, zero line in the wall by lead again with power supply input wires screw with the input metal wiring film; The other end of a pair of elasticity power supply input sheet metal laterally is divided into two moving contact arms respectively, and the end face every moving contact arm end is respectively equipped with a moving contact abreast, and four moving contact arm ends are provided with two pairs of four moving contacts altogether abreast;
Be respectively equipped with a pair of fixed contact in the vertical up and down corresponding position of importing on the sheet metal moving contact arm with power supply on the described a pair of power supply output conductor of moving contact; On the described a pair of power supply output sheet metal with power supply input sheet metal moving contact arm on another vertical up and down corresponding position of moving contact also is respectively equipped with a pair of fixed contact; Above-mentioned two pairs of moving contacts and two pairs of fixed contacts constitute the two groups of four pairs of switches of live wire, zero line that be arranged in parallel;
Described tripgear comprises that release, snap close, latch spring, dropout top flat, tripping operation lift up bar, reset lever, lift up bar spring and tripping coil;
Release is positioned at the below of the reset button that covers, the centre of elasticity power supply input sheet metal, it is a cylinder, be fixed on the bobbin and also can move along straight line about the bobbin, its top is provided with a vertical central perforation, and the reset guide post that is with back-moving spring that is embedded in the reset button bottom surface can move up and down along central perforation;
In the bottom of release, cross release and be provided with " L " shape snap close of movably making by metal material, be provided with bonnet lock hole in the bottom surface of snap close, be arranged in the reset guide post of release central perforation and the bonnet lock hole of snap close bottom surface and misplace; Between the sidewall of release and snap close madial wall, be provided with a round groove, be built-in with latch spring;
Relative with the sidewall of " L " shape snap close, be provided with one at the opposite side of release and can lift up bar around the tripping operation that is erectility of its rotation; Lift up in tripping operation and to be provided with one between the inboard and release sidewall of bar and to lift up the bar spring; Lift up the bar outside in tripping operation and be provided with a tripping coil that is built-in with movable core, be with spring in the end of iron core, the end of iron core faces the latter half that bar is lifted up in tripping operation;
What be arranged on the reset button that covers each side stretches out the outrigger arm that resets, and hook block has a upright reset lever on each resets the outrigger arm; At the middle part of each reset lever, be provided with two/or the gib head of a protrusion with two moving contact arm corresponding sections on the elasticity power supply input sheet metal; When earth leakage protective socket was in initial condition, gib head was positioned at the top of moving contact arm, was in the volt attitude process that resets at earth leakage protective socket, and gib head is positioned at the below of moving contact arm;
Below the testing button that on being arranged on, covers, fixedly be provided with a dropout top flat above the bobbin of release; This dropout top flat is " L " shape heat insulating lamella that a dextrorotation that has chamfering turn 90 degrees; Be provided with pumping slot in the bobbin upper surface left and right sides, in dropout top flat and the bobbin contact-making surface left and right sides were provided with the pumping slot that salient point is hooked in the bobbin surface, the dropout top flat can freely move forward and backward at the bobbin upper surface; Have five holes on the dropout top flat, one is the hole that release is exposed; One is the sidewall that makes snap close from hole that the dropout top flat passes; One is the hole that fixed-handle circuit breaker is lifted up bar; Two other is the hole that is used for fixing two reset lever;
Release, snap close, latch spring, dropout top flat, tripping operation lift up bar, reset lever, lift up the bar spring be connected mutually become one can free movable integral body.
The horizontal parallel a pair of elasticity moving contact arm that is provided with of the other end of described power firestreak input sheet metal, its end end face respectively is provided with a moving contact, moving contact and the fixed contact on the described power firestreak output conductor on its outside moving contact arm constitute pair of switches, and the fixed contact on moving contact on its inboard moving contact arm and the power firestreak output sheet metal constitutes pair of switches;
The horizontal parallel a pair of elasticity moving contact arm that is provided with of the other end of described zero-power line input sheet metal, its end end face respectively is provided with a moving contact, moving contact and the fixed contact on the zero-power line output conductor on its outside moving contact arm constitute pair of switches, fixed contact on moving contact on its inboard moving contact arm and the zero-power line output sheet metal constitutes pair of switches, and above-mentioned four pairs of dynamic and static contacts constitute live wire, two groups of four pairs of mains switches that be arranged in parallel of zero line altogether.
The described testing button that covers that is arranged on is extended with a pin downwards, and the upper end of pin is with a spring; One lateral edges of testing button is extended with an arm downwards, and the arm point is being pressed a metallic test sheet, also is provided with a sheet metal below the metallic test sheet, and when earth leakage protective socket was in initial condition and reset mode, the metallic test sheet did not contact with sheet metal; One end of metallic test sheet links to each other with power firestreak, and the other end is unsettled, and the sheet metal that is positioned under it links to each other with zero-power line by a resistance;
When described testing button is pressed to primary importance downwards, the bottom of its arm compresses the metallic test sheet, the unsettled end of metallic test sheet contacts with sheet metal, and power firestreak is through metallic test sheet, sheet metal, resistance and zero-power line short circuit, and artificial simulation produces leakage current;
When described testing button continues to be pressed to the second place downwards; its pin that extends is downwards pressed the inclined-plane at described dropout top flat chamfering place; promoting the dropout top flat drives described tripping operation and lifts up bar, reset lever and move to the tripping coil direction together; gib head on the described a pair of reset lever separates with four moving contact arms of elasticity power supply input sheet metal; fixed contact on moving contact on the moving contact arm of power supply input sheet metal and the power supply output conductor and the fixed contact on the power supply output sheet metal separate, and cut off the power supply output of earth leakage protective socket by force.
Between the bottom surface of described release and circuit board, be provided with a power condition switch of making by elastic metallic material, it and reset button interlock; It is connected on the control tripping coil whether in the switching device such as silicon controlled control loop in electric generation magnetic field.
This earth leakage protective socket also be provided with one with reset button interlock be used to detect the reset button state of switch; This switch series is associated in the control circuit; It is made up of fixed mount, two spring leafs, and two spring leafs link to each other by being used to control the pin that latchs flip chip that count/resets of putting that produces the simulation leakage current whether automatically in resistance and the control circuit.
Control circuit on the described control circuit board comprise realize leakage current detects, reset button resets/threads off main circuit, simulate leakage current generating circuit and display circuit, reset button resets/trip status identification circuit, analog detection feedback circuit, resetting voltage output circuit, life terminating detection judging circuit, manual test circuit and socket output voltage display circuit.
Because the utility model adopts above technical scheme; make the utility model not only have creepage protection function; and after the power firestreak in the utility model and wall, zero line were connected, need not to operate any parts can detect by automatic creepage protection function to earth leakage protective socket.When the earth leakage protective socket inner member is intact, can set up correct reset mechanism automatically reset button is resetted, after resetting, normal condition indicator light Chang Liang illustrates that earth leakage protective socket can operate as normal; When earth leakage protective socket inner member open circuit or short circuit are end-of-life; the utility model shows its end-of-life by the malfunction indicator light; remind the user in time to change new product; and stop reset button to reset; make the load output of earth leakage protective socket and the single-phase three-wire power supply output plughole of receptacle face all not have power supply output; when avoiding leaky occurring again because of earth leakage protective socket end-of-life; or its inner components and parts cisco unity malfunction that breaks down, the generation of dead accident but its user who still has power supply output to cause gets an electric shock.In addition, when certain the spare and accessory parts fault in the earth leakage protective socket,, can cut off the power supply output of socket mechanically by force by pushing testing button particularly when tripping coil or controllable silicon opens circuit or the leakage current detecting element damages can't operate as normal the time.The utility model function is complete, fail safe good, and is safe in utilization, can guarantee user's personal safety and security appliance really.
Description of drawings
Fig. 1 is the three-dimensional decomposition texture schematic diagram of the utility model;
Fig. 2 is a front view of the present utility model;
Fig. 3 removes front view behind the loam cake for the utility model;
Fig. 4 is that each module position concerns schematic diagram on the utility model circuit board;
Fig. 5-1 is the C-C partial sectional view of Fig. 3, socket initial condition schematic diagram;
Fig. 5-2 is the C-C partial sectional view of Fig. 3, socket view when pushing reset button;
Fig. 5-3 is the C-C partial sectional view of Fig. 3, pushes reset button tripgear action socket view;
Fig. 5-4 is the C-C partial sectional view of Fig. 3, and pushing reset button sound contact contact base has power supply when output view;
Fig. 5-5 is the C-C partial sectional view of Fig. 3, pushes testing button socket tripping operation/trip status schematic diagram;
Fig. 5-6 is the C-C partial sectional view of Fig. 3, pushes the mechanical by force dropout socket of testing button view;
Fig. 6-1 is the A-A partial sectional view of Fig. 3, the view during output of socket initial condition non-transformer;
Fig. 6-2 is the A-A partial sectional view of Fig. 3, socket view when reset button is pressed;
Fig. 6-3 is the A-A partial sectional view of Fig. 3, view when sound contact contact base has power supply output;
Fig. 7 is the utility model control circuit loop control theory block diagram;
Fig. 8 is the utility model control circuit physical circuit figure.
Embodiment
As shown in Figure 1, the disclosed earth leakage protective socket of the utility model mainly is made of housing, the circuit board that is installed in the housing.This circuit board not only has the control earth leakage protective socket and has/function of non-transformer output; and, also have need not to operate any parts can be automatically to earth leakage protective socket whether end-of-life, whether still have the function that creepage protection function detected and showed testing result.
As shown in the figure, described housing is combined by loam cake 2, insulation middle layer bracket 3 and base 4; Between loam cake 2 and middle layer bracket 3, be provided with metal ground connection mounting panel 1; Between middle layer bracket 3 and base 4, be provided with circuit board 18.
As shown in Figure 1 and Figure 2, on loam cake 2, have power supply output plughole 5,6, reset button hole 8-A, testing button hole 7-A and status indicator lamp hole 30-A.Be provided with reset button (RESET) 8 and testing button (TEST) 7 in reset button hole 8-A and testing button hole 7-A, reset button 8 and testing button 7 pass metal ground connection mounting panel 1 and middle layer bracket 3 and contact with assembly on the circuit board 18.
Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A (as shown in Figure 2), lead.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.
As Fig. 1, shown in Figure 3, be separately installed with a power firestreak output conductor 14 and a zero-power line output conductor 13 in middle layer bracket 3 both sides of insulation.On power supply output conductor 14,13, should locate to be provided with sheet clip leaf wing 60,61 and 62,63 with live wire hole, the null line hole of loam cake 2 power supply output plugholes 5,6 are up and down vertical opposite.On power supply output conductor 13,14, be respectively equipped with fixed contact 15 and 16, form a pair of fixed contact 15 and 16.
As shown in Figure 1, base 4 is used to hold middle layer bracket 3 and circuit board 18.The bilateral symmetry of base 4 shells be provided with a pair of zero-power line, live wire input wires screw 9,10 and a pair of input metal wiring film 24,25 and a pair of zero-power line, live wire output earthing screw 109,110 and a pair of power supply output sheet metal 80,81, on power supply output sheet metal 80,81, be provided with a pair of fixed contact 52,53.
Core component of the present utility model is mounted in the circuit board 18 in the housing, the power supply output connection screw 109,110 that it has the power supply output plughole 5,6 that makes on the supply socket loam cake 2, base 4 both sides has/or non-transformer output and need not operate any parts and can detect whether end-of-life and show the function of testing result of earth leakage protective socket automatically.
As Fig. 1, shown in Figure 4, this circuit board 18 is provided with two elasticity zero-power lines, live wire input sheet metal 50,51.One end of elasticity power supply input sheet metal 50,51 is bent downwardly 90 degree, passing differential differentiating transformer 19 is welded on the circuit board 18 with input metal wiring film 24,25, and link to each other with zero-power line, live wire input wires screw 9,10, zero-power line input wires screw 9 links to each other with zero-power line in the wall by lead, and power firestreak input wires screw 10 links to each other with power firestreak in the wall by lead; The other end of elasticity power supply input sheet metal 50,51 laterally is divided into two moving contact arm B-1, B-2, A-1, A-2 respectively, and the end face of four moving contact arm ends is respectively equipped with moving contact 54,22 and 23,55.Wherein, moving contact 23,22 on elasticity power supply input sheet metal 51,50 outermost moving contact arm A-1, the B-2 is corresponding with the fixed contact 16,15 on the power firestreak that is arranged on middle layer bracket 3 both sides, the zero line output metallic conductor 14,13 respectively, be that moving contact 23 is corresponding with fixed contact 16, moving contact 22 and fixed contact 15 corresponding (as shown in Figure 3); Moving contact 55,54 on moving contact arm A-2, the B-1 of elasticity power supply input sheet metal 51,50 inboards respectively be arranged on base 4 in power firestreak, fixed contact 53,52 on the zero line output sheet metal 81,80 corresponding, be that moving contact 55 is corresponding with fixed contact 53, moving contact 54 and fixed contact 52 corresponding (as shown in Figure 3), above-mentioned four pairs of sound contacts that be arranged in parallel have constituted live wire as shown in Figure 8, two groups of four couples of mains switch K that be arranged in parallel of zero line
R2-1, K
R2-2, K
R3-1, K
R3-2
As shown in Figure 8, a pair of elasticity moving contact arm A-1, the A-2 end end face of above-mentioned power firestreak input sheet metal 51 respectively are provided with a moving contact 23,55, and the moving contact 23 on the moving contact arm A-1 of its outside constitutes pair of switches K with the fixed contact 16 on the power firestreak output conductor 14
R2-1, the moving contact 55 on its inboard moving contact arm A-2 constitutes pair of switches K with the fixed contact 53 that power firestreak is exported on the sheet metal 81
R3-1A pair of elasticity moving contact arm B-1, the B-2 end end face of zero-power line input sheet metal 50 respectively are provided with a moving contact 54,22, and the moving contact 22 on the moving contact arm B-2 of its outside constitutes pair of switches K with the fixed contact 15 on the zero-power line output conductor 13
R2-2, the moving contact 54 on its inboard moving contact arm B-1 constitutes pair of switches K with the fixed contact 52 that zero-power line is exported on the sheet metal 80
R3-2, above-mentioned four pairs of dynamic and static contacts constitute live wire, two groups of four couples of mains switch K of zero line altogether
R2-1, K
R3-1, K
R2-2, K
R3-2
Shown in Fig. 1, Fig. 4, Fig. 5-1, on circuit board 18, also be provided with and make above-mentioned four pairs of dynamic and static contacts contact/or disconnect, thereby make earth leakage protective socket realize that electric power connects/or the tripgear that disconnects.This tripgear comprises that release 28, snap close 30, latch spring 34-2, dropout top flat 37, tripping operation lift up bar 32, reset lever 35A, lift up bar spring 34-1 and tripping coil 26.
In the bottom of release 28, cross release 28 and be provided with " L " shape snap close 30 of movably making by metal material.Be provided with bonnet lock hole 31 in the bottom surface of snap close 30, be arranged in the reset guide post 35 of release 28 central perforations 29 and the bonnet lock hole 31 of snap close 30 bottom surfaces and misplace.Between the sidewall of release 28 and snap close 30 madial walls, be provided with a round groove, be built-in with latch spring 34-2.
Relative with the sidewall of " L " shape snap close 30, be provided with one at the opposite side of release 28 and can lift up bar 32 around the tripping operation that is erectility of its rotation.Lift up in tripping operation and to be provided with one between inboard and release 28 sidewalls of bar 32 and to lift up bar spring 34-1.Lift up bar 32 outsides in tripping operation and be provided with a tripping coil 26 that is built-in with movable core 42, be with spring in the end of iron core 42, the end of iron core 42 faces the latter half that bar 32 is lifted up in tripping operation.
Shown in Fig. 1, Fig. 5-1, the utility model reset button 8 each side stretch out the outrigger arm 35B that resets, hook block has a upright reset lever 35A on each resets outrigger arm 35B.At the middle part of each reset lever 35A, be provided with two/or the gib head 36 of a protrusion with two moving contact arm corresponding sections on the elasticity power supply input sheet metal 50,51.When earth leakage protective socket was in initial condition, gib head 36 was positioned at the top (shown in Fig. 5-1) of moving contact arm, lied prostrate in the attitude process when earth leakage protective socket is in to reset, and gib head 36 is positioned at the below (shown in Fig. 5-3, Fig. 5-4) of moving contact arm.
Shown in Fig. 1, Fig. 5-1, below testing button 7, fixedly be provided with a dropout top flat 37 above the bobbin of release 28.This dropout top flat 37 is " L " shape heat insulating lamella that a dextrorotation that has chamfering turn 90 degrees.Be provided with pumping slot in the bobbin upper surface left and right sides, in the dropout top flat 37 and the bobbin contact-making surface left and right sides are provided with the pumping slot that salient point is hooked in the bobbin surface, make dropout top flat 37 freely to move forward and backward at the bobbin upper surface.Have five holes on dropout top flat 37, one is the bigger hole 37-C that release 28 is exposed; One is the sidewall that makes snap close 30 from hole 37-D that dropout top flat 37 passes; One is the hole 37-B that fixed-handle circuit breaker is lifted up bar 32; Two other is the hole 37-A that is used for fixing two reset lever 35A.
As shown in Figure 4, the utility model also is provided with the differential differentiating transformer 19 (coil L1, the L2 of Fig. 8) that is used for detecting leakage current on circuit board 18.Power firestreak HOT, zero line WHITE pass differential differentiating transformer.When leaky occurring in the current supply circuit; differential differentiating transformer is exported a voltage signal; making in the tripping coil 26 that is built-in with movable core 42 by a switching device such as controllable silicon has electric current to flow through; produce magnetic field; make iron core 42 actions; thereby; make the tripgear action; moving contact 22,23,54,55 on the elasticity power supply input sheet metal 50,51 is disconnected with fixed contact 52,53 on fixed contact 15,16 on the power supply output conductor 13,14 and the power supply output sheet metal 80,81, cut off the power supply of earth leakage protective socket and export.
To shown in Fig. 5-6, the utility model is provided with a power condition switch of being made by elastic metallic material between the bottom surface of release 28 and circuit board 18 be K among Fig. 8 as Fig. 5-1
R4, it and reset button (RESET) 8 link, when reset button 8 is pressed, and power condition switch K
R4Closure, when reset button 8 is released, power condition switch K
R4Disconnect.This power condition switch K
R4Constitute by two spring leafs 67,68, it be connected on control tripping coil 26 whether in the switching device such as silicon controlled control loop in electric generation magnetic field.
The utility model realize earth leakage protective socket have/or the theory of mechanics of unregulated power output be:
Shown in Fig. 5-1; when earth leakage protective socket is in initial condition; no current flows through in the tripping coil 26; its built-in iron core 42 is failure to actuate; bar 32 is lifted up in tripping operation in the tripgear; reset lever 35A all is in erectility; gib head 36 on the reset lever 35A all is positioned at elasticity power supply input sheet metal 50; 51 moving contact arm A-1; A-2; B-1; the top of B-2; make power supply input sheet metal 50; moving contact 23 on the 51 moving contact arms; 55; 54; 22 with power supply output conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 53 on 81; 52 do not contact, the output of earth leakage protective socket non-transformer.
Shown in Fig. 5-2, push reset button 8 downwards, when reset button 8 moves downward, Lian Dong power condition switch K with it
R4(sheet metal 67,68) closure, make control tripping coil 26 whether electric switching device conducting, tripping coil 26 must electricly have electric current to flow through, produce magnetic field, make built-in iron core 42 action wherein shown in Fig. 5-3, promote tripping operation and lift up bar 32, lift up bar 32 pulling dropout top flats 37 by tripping operation and head on reset lever 35A and move to the tripping coil direction together around its rotation, simultaneously, latch spring 34-2, lift up bar spring 34-1 and be compressed simultaneously.Lift up bar 32, dropout top flat 37, reset lever 35A together in the process that the tripping coil direction moves in tripping operation, four/two gib heads 36 on a pair of reset lever 35A move to 35 angle positions simultaneously, separate with four moving contact arm A-1, A-2, B-1, B-2 of elasticity power supply input sheet metal, gib head 36 becomes the position that is positioned at moving contact arm below shown in Fig. 5-3 from the position that is positioned at moving contact arm top shown in Fig. 5-2.
Shown in Fig. 5-4, discharge reset button 8, Lian Dong power condition switch K with it
R4(sheet metal 67,68) disconnects, make control tripping coil 26 whether electric switching device disconnects, no currents flow through in the tripping coil 26, the magnetic field disappearance, iron core 42 returns to initial position; At latch spring 34-2, lift up under the effect of bar spring 34-1, dropout top flat 37 returns to initial position, the tripping operation lift up bar 32, reset lever 35A returns to erectility; Under the effect of spring 91; reset button 8 moves upward; the reset lever 35A that drives its both sides simultaneously moves upward together; gib head 36 on the reset lever 35A power supply input sheet metal 50 with regard to hook; 51 moving contact arm A-1; A-2; B-1; B-2 moves upward together; make power supply input sheet metal 50; moving contact 23 on the 51 moving contact arms; 55; 54; 22 with power supply output conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 53 on 81; 52 contacts; make earth leakage protective socket power output end 80; 81 and the power supply output plughole 5 of receptacle face; 6 have power supply output; be that earth leakage protective socket has power supply output, earth leakage protective socket operate as normal.
When detecting, differential differentiating transformer 19 has leaky in the current supply circuit, during short circuit phenomenon, as leaky because of the damaged generation of power line, when short circuit phenomenon and people produce leakage current for pushing the testing button simulation, differential differentiating transformer 19 outputs one voltage signal, make control tripping coil 26 whether electric switching device such as controllable silicon conducting, tripping coil 26 must electricly have electric current to flow through, produce magnetic field, make built-in iron core 42 actions wherein, promote tripping operation and lift up bar 32, lift up bar 32 pulling dropout top flats 37 by tripping operation and head on reset lever 35A and move to tripping coil 26 directions together around its rotation; Gib head 36 on the reset lever 35A is separated with moving contact arm A-1, A-2, B-1, the B-2 of power supply input sheet metal 50,51; Because action of gravity; moving contact arm A-1, A-2, B-1, the B-2 of power supply input sheet metal 50,51 fall; fixed contact 53,52 on fixed contact 15,16 on moving contact 23,55,54,22 on it and the power supply output conductor 13,14 and the power supply output sheet metal 80,81 separates; the power supply output plughole 5,6 of earth leakage protective socket power output end 80,81 and receptacle face does not all have power supply output, cuts off all power supply outputs of earth leakage protective socket.
Shown in Fig. 6-1 ∽ Fig. 6-3, the utility model also be provided with one with the switch of reset button 8 interlock be KR1 among Fig. 8, when reset button was in tripped condition, the spring leaf 102 of K switch R1 contacted conducting (as Fig. 6-1) with spring leaf 103 under the effect on inclined-plane, reset button side; When reset button was in reset mode, owing to moving down of inclined-plane, reset button side, spring leaf 102 resiled, and separates with spring leaf 103, is in not on-state (as Fig. 6-2, Fig. 6-3).This K switch R1 is mainly used in the state that detects reset button 8, and gives control circuit with its state transfer.It is made up of fixed mount 101, two spring leafs 102,103, spring leaf 102 links to each other with the pin 2 that latchs flip chip IC2 (model ZQC-051208) that count/resets of putting among Fig. 8 by resistance R 7, R3, capacitor C 1, spring leaf 103 with put the pin 4 that latchs flip chip IC2 (model ZQC-051208) that count/resets and link to each other.
Fig. 7 realizes the control circuit theory diagram of earth leakage protective, life end checking function for the utility model.As shown in the figure, the utility model control circuit comprise realize leakage current detects, reset button resets/threads off main circuit U1, simulate leakage current generating circuit and display circuit U2, reset button resets/trip status identification circuit U3, analog detection feedback circuit U4, resetting voltage output circuit U5, life terminating detection judging circuit U6, manual test circuit U 7 and socket output voltage display circuit U8.
Power input L when earth leakage protective socket
IN, N
INAfter connecting with power firestreak, zero line in the wall; earth leakage protective socket powers on; reset button resets/and trip status identification circuit U3 detects the state of reset button 8 (RESET) automatically; when earth leakage protective socket is in trip status; reset button resets/and KR1 among the trip status identification circuit U3 is in closure state; U3 sends 2 pin of a state recognition signal to IC2 among the life terminating detection judging circuit U6; this moment, signal of 3 pin output of IC2 was given simulation leakage current generating circuit and display circuit U2, drove U2 and produced a simulation leakage current automatically.If the earth leakage protective socket function is intact; there is not end-of-life; then leakage current detects; the main circuit U1 that reset button resets/threads off will detect this leakage current; feedback input end 5 pin of IC2 among the pulse signal feed-in U6 of analog detection feedback circuit U4 output normal condition; the 1 pin output high level that makes IC2 is to resetting voltage output circuit U5; the reset mode for the treatment of that earth leakage protective socket is in normally to reset; and the normal condition indicator light V17 among the socket output voltage display circuit U8 is lighted; show that the earth leakage protective socket function is intact; 3 pin of IC2 among the life terminating detection judging circuit U6 change low level state into simultaneously, make U2 stop to produce the simulation leakage current.At this moment press reset button 8, tripgear resets reset button 8, and the earth leakage protective socket operate as normal has power supply output, and state-detection K switch R1 is disconnected by interlock simultaneously.Otherwise; if current leakage jack life termination; U4 does not have 5 pin of the IC2 among the pulse signal feed-in U6 of normal condition; 1 pin of IC2 is in low level state all the time; there is not signal to output to U5; thereby make earth leakage protective socket be in the state that can not reset all the time; the tripgear that is earth leakage protective socket stops reset button 8 to reset all the time; 3 pin of IC2 are in high level always; the simulation leakage current signal that U2 produces exists all the time; make the malfunction indicator light V10 among the U2 bright simultaneously, remind the user in time to change the earth leakage protective socket that has arrived end-of-life.
The utility model except have power on after; automatically produce simulation leakage current detection earth leakage protective socket and whether still have creepage protection function; whether outside the end-of-life; can also produce the simulation leakage current, the function that makes the earth leakage protective socket tripping operation and cut off the output of earth leakage protective socket power supply by force by pushing testing button (TEST) 7 by manual test circuit U 7.Shown in Fig. 5-1 ∽ Fig. 5-5, the utility model testing button 7 is extended with a pin 40A downwards, and the upper end of pin 40A is with a spring 40; One lateral edges of testing button 7 is extended with an arm 46 downwards; the arm point is being pressed a metallic test sheet 47; also be provided with a sheet metal 47A below metallic test sheet 47, when earth leakage protective socket was in initial condition and reset mode, metallic test sheet 47 did not contact with sheet metal 47A.As shown in Figure 8, an end of metallic test sheet 47 links to each other with power firestreak, and the other end is unsettled, and the sheet metal 47A that is positioned under it links to each other with zero-power line by a resistance R 1.Shown in Fig. 5-5, when testing button 7 was pressed, the tip of its arm 46 compressed test pieces 47, and test pieces 47 unsettled ends are contacted with sheet metal 47A, thereby make power firestreak through metallic test sheet 47, sheet metal 47A, resistance R 1 and zero-power line short circuit, artificial simulation produces leakage current.Have creepage protection function if earth leakage protective socket is working properly, earth leakage protective socket should trip, and cuts off its power supply output.If testing button 7 still makes socket not trip by the metallic test sheet being contacted with sheet metal produce the simulation leakage current from inactive state, this earth leakage protective socket end-of-life is described downwards.At this moment, shown in Fig. 5-6, can continue to push testing button 7 downwards by the power supply output of cutting off socket to the second place by mechanical device by force.Shown in Fig. 5-6; after current leakage jack life termination can't trip; can continue to push testing button 7 downwards; the pin 40A that testing button 7 is extended downwards presses the inclined-plane at dropout top flat 37 chamfering places; promoting dropout top flat 37 moves to the direction of tripping coil 26; make dropout top flat 37 drive tripping operation and lift up bar 32; reset lever 35A moves to the tripping coil direction together; thereby make four moving contact arm A-1 of gib head 36 and elasticity power supply input sheet metal on a pair of reset lever 35A; A-2; B-1; B-2 separates; because action of gravity; power supply input sheet metal 50; 51 moving contact arm A-1; A-2; B-1; B-2 falls; moving contact 23 on it; 55; 54; 22 with power supply output conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 53 on 81; 52 separate; cut off the power supply output of earth leakage protective socket by force, make the former output 80 of earth leakage protective socket electricity; 81 and the power supply output plughole 5 of receptacle face; 6 all do not have power supply output.
Fig. 8 is the utility model control circuit physical circuit figure.Its main components and parts comprise: the differential differentiating transformer L1, the L2 that detect leakage current; Leakage current detects control chip IC1 (model RV4145); Life terminating detection judging chip (putting count/resets latchs flip chip) IC2 (model ZQC-051208); Optocoupler IC3, IC4.Automatically the circuit that produces the simulation leakage current after the utility model powers on is made of the resistance R 2, rectifier bridge V6-V9, controllable silicon V11, diode V10, resistance R 14, the R15 that connect.One end of resistance R 2 and power input live wire L
INLink to each other, the other end is by ac power input end and the zero-power line N of rectifier bridge V6-V9
INLink to each other, the anode of controllable silicon V11 links to each other with the dc power anode of rectifier bridge V6-V9, the negative electrode of controllable silicon V11 links to each other with the dc power cathode of rectifier bridge V6-V9, and the control utmost point of controllable silicon V11 links to each other by 3 pin of the IC2 among optocoupler IC3 and the life terminating detection judging circuit U6.After earth leakage protective socket powered on, when 3 pin of IC2 were exported high level, the resistance R 2 of series connection, rectifier bridge V6-V9 produced the simulation leakage current with live wire and zero line short circuit automatically together; When 3 pin of IC2 were low level, the simulation leakage current disappeared automatically.
As shown in Figure 8, if the earth leakage protective socket function is intact, working properly, when having leakage current in the circuit, the magnetic test coil of differential differentiating transformer L1, L2 induces the voltage signal of certain value immediately, detect the signal input part 1 and 2 of control chip IC1 to leakage current, the 5 pin output control signal of IC1 is given the gate pole of controllable silicon V13, make controllable silicon V13 triggering and conducting, thereby the tripping coil (SOL) in the tripgear is got, its inner iron core is done ballistic motion, makes reset button thread off the output of cutting off the electricity supply; Because the dropout of reset button; K switch R1 closure among the U3 of feasible interlock with it; cause and again earth leakage protective socket is detected; if function is intact; 1 pin of the life terminating detection judging chip IC 2 among the U6 becomes high level, makes optocoupler IC4 work among the U8, controllable silicon V18 conducting; V17 is bright for the normal condition indicator light, and this earth leakage protective socket can be reset.Otherwise, if current leakage jack life termination, 1 pin of life terminating detection judging chip IC 2 is a low level among the U6, thereby does not have signal to output to U5, so earth leakage protective socket can not be reset.The high level of 3 pin of IC2 output simultaneously makes optocoupler IC3 work among the U2, controllable silicon V11 conducting, and V10 is bright for the malfunction indicator light, reminds the user in time to change the earth leakage protective socket of end-of-life.
When earth leakage protective socket is intact, work all just often, press reset button RESET, because K switch
R4With reset button RESET interlock, when pressing reset button RESET, K switch
R4Closed; The controllable silicon V13 conducting that is triggered, tripping coil SOL gets electricly has electric current to flow through, and produces magnetic field, and its built-in iron core action promotes the tripgear of earth leakage protective socket, makes latch spring 34-2, lifts up bar spring 34-1 and be compressed simultaneously; Tripping operation is lifted up bar 32, dropout top flat 37, reset lever 35A, snap close 30 and is moved to coil direction together; The gib head 36 that resets on a pair of reset lever 35A is moved to 35 angle positions simultaneously, separate with four moving contact arm A-1, A-2, B-1, B-2 of elasticity power supply input sheet metal, gib head 36 becomes the position that is positioned at moving contact arm below shown in Fig. 5-3 from the position that is positioned at moving contact arm top shown in Fig. 5-2.Discharge reset button 8, Lian Dong power condition switch K with it
R4(sheet metal 67,68) end is opened, make control tripping coil (SOL) 26 whether electric controllable silicon V13 ends, no current flows through in the tripping coil SOL, the magnetic field disappearance, iron core 42 returns to initial position; At latch spring 34-2, lift up under the effect of bar spring 34-1, dropout top flat 37 returns to initial position, the tripping operation lift up bar 32, reset lever 35A returns to erectility; Under the effect of spring 91; reset button 8 moves upward; driving reset lever 35A simultaneously moves upward together; gib head 36 on the reset lever 35A power supply input sheet metal 50 with regard to hook; 51 moving contact arm A-1; A-2; B-1; B-2 moves upward together; make power supply input sheet metal 50; moving contact 23 on the 51 moving contact arms; 55; 54; 22 with power supply output conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 53 on 81; 52 contacts; make earth leakage protective socket power output end 80; 81 and the power supply output plughole 5 of receptacle face; 6 have power supply output; be that earth leakage protective socket has the output of electric power output/power supply, earth leakage protective socket operate as normal.
As shown in Figure 8, press testing button TEST and produce the simulation leakage current, magnetic test coil L1, after L2 (differential differentiating transformer 19) detects leakage current, output voltage signal is given control chip IC1, the 5 pin output high level of chip IC 1, make controllable silicon V13 conducting, there is electric current to pass through in the tripping coil 26 (SOL), produce magnetic field, attract built-in iron core 42 bump tripping operations wherein to lift up bar 32, make and lift up bar spring 34-1, latch spring 34-2 is compressed, and dropout top flat 37, snap close 30, tripping operation is lifted up bar 32 and is moved to the tripping coil direction simultaneously, push reset lever 35A open, make gib head 36 and power supply input sheet metal 50 on the reset lever 35A, 51 moving contact arm A-1, A-2, B-1, B-2 separates; Because action of gravity; moving contact arm A-1, A-2, B-1, the B-2 of power supply input sheet metal 50,51 fall; fixed contact 53,52 on fixed contact 15,16 on moving contact 23,55,54,22 on it and the power supply output conductor 13,14 and the power supply output sheet metal 80,81 separates; the power supply output plughole 5,6 of earth leakage protective socket power output end 80,81 and receptacle face does not all have power supply output, cuts off all power supply outputs of earth leakage protective socket.
When leaky occurring in the current supply circuit; differential differentiating transformer will detect control chip ICI (model RV4145) to leakage current by output voltage signal; the 5 pin output control signal of chip IC I makes controllable silicon V13 conducting; coil 26 produces magnetic field; make the iron core action; and then the tripgear on the circuit board 18 is moved; reset button 8 is threaded off; power supply input sheet metal 50; moving contact 23 on 51; 55; 54; 22 with power supply output conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 53 on 81; 52 separate; the earth leakage protective socket tripping operation, the output of cutting off the electricity supply.
As Fig. 4, shown in Figure 8, on circuit board 18, be provided with two and be used to indicate the whether indicator light of end-of-life of earth leakage protective socket, one is green normal condition indicator light V17, one be the malfunction indicator light V10 of redness.Shown in Fig. 6-1, Fig. 6-2; at indicator light V17, be provided with a light lead pipe D who vertically places above the V10; the top of this light lead pipe D is positioned at the indicator lamp hole 30-A below on loam cake 2 surfaces, and the anaclasis of indicator light V17, V10 being sent by light lead pipe D is to the surface of earth leakage protective socket.
As shown in Figure 4, the utility model is below acting arm A-1, the A-2 of elasticity power supply input chip 50,51, B-1, B-2, and fixedly the bobbin of release 28 is provided with a pair of position-limited block 73,74.
Total the above; the utility model not only has creepage protection function, and, after the power firestreak in the utility model and wall, zero line are connected; need not to operate any parts and just can detect whether end-of-life of earth leakage protective socket automatically, and show testing result by indicator light.If earth leakage protective socket does not have end-of-life, still have creepage protection function, reset button can normally be resetted, and normal condition indicator light Chang Liang, earth leakage protective socket have power supply output.If current leakage jack life termination; the life-span stop detection control chip stops reset button can not be reset all the time; the power supply output plughole of earth leakage protective socket and load output do not have electric power output all the time, remind the user to note in time changing earth leakage protective socket.In addition, during certain spare and accessory parts fault in earth leakage protective socket, particularly when the tripping coil fault can't operate as normal, can cut off the power supply output of socket mechanically by force by pushing testing button.The utility model function is complete, fail safe good, and is safe in utilization, can guarantee user's personal safety.
The above is specific embodiment of the utility model and the know-why used, and is any based on the equivalent transformation on the technical solutions of the utility model basis, all belongs within the utility model protection range.
Claims (10)
1, a kind of earth leakage protective socket, it is by housing and be installed in the earth leakage protective socket realized in the housing and have/and the control circuit board (18) of non-transformer output constitutes;
Described housing is combined by loam cake (2), base (4) and the insulation middle layer bracket (3) between loam cake, base; On loam cake (2), be provided with power output socket hole (5,6), be provided with a pair of power supply input wires screw (9,10) and a pair of power supply output connection screw (109,110) in the base shell both sides; Be respectively equipped with power firestreak, zero line output conductor (14,13) in insulation middle layer bracket both sides, on this power supply output conductor with loam cake on power output socket null line hole, corresponding position, live wire hole be provided with sheet clip leaf wing; Both sides are provided with a pair of power firestreak that links to each other with power supply output connection screw in base, zero line output sheet metal (81,80) is characterized in that:
Differential differentiating transformer (19) and this elasticity power firestreak of control, the zero line input sheet metal (50,51) that a pair of elasticity power firestreak, zero line input sheet metal (51,50), one be used to detect leakage current is installed export sheet metal (80,81) with power supply output conductor (13,14), power supply and contact on described control circuit board (18)/or the tripgear of disconnection;
Described elasticity power firestreak, zero line input sheet metal (51, a 50) end are bent downwardly 90 degree, pass differential differentiating transformer (19) and be welded on circuit board (18) with input metal wiring film (25,24) and go up and to link to each other, link to each other with power firestreak, zero line in the wall by lead again with power supply input wires screw (10,9); The other end of a pair of elasticity power supply input sheet metal (51,50) laterally is divided into two moving contact arms (A-1, A-2, B-1, B-2) respectively, end face every moving contact arm end is respectively equipped with a moving contact abreast, and four moving contact arm ends are provided with two pairs of four moving contacts (54,22 and 23,55) altogether abreast;
Go up the vertical up and down corresponding position of importing on the sheet metal moving contact arm with power supply of moving contact at described a pair of power supply output conductor (13,14) and be respectively equipped with a pair of fixed contact (15,16); Go up at described a pair of power supply output sheet metal (80,81) and to import on the sheet metal moving contact arm another with power supply the vertical up and down corresponding position of moving contact also is respectively equipped with a pair of fixed contact (52,53); Above-mentioned two pairs of moving contacts and two pairs of fixed contacts constitute the two groups of four pairs of switches of live wire, zero line that be arranged in parallel;
Described tripgear comprises that release (28), snap close (30), latch spring (34-2), dropout top flat (37), tripping operation lift up bar (32), reset lever (35A), lift up bar spring (34-1) and tripping coil (26);
Release (28) is positioned at the below of the reset button (8) on the loam cake (2), the centre of elasticity power supply input sheet metal (50,51), it is a cylinder, be fixed on the bobbin and also can move along straight line about the bobbin, its top is provided with a vertical central perforation (29), and the reset guide post (35) that is with back-moving spring (91) that is embedded in reset button 8 bottom surfaces can move up and down along central perforation (29);
In the bottom of release (28), cross release (28) and be provided with " L " shape snap close (30) of movably making by metal material, be provided with bonnet lock hole (31) in the bottom surface of snap close (30), be arranged in the reset guide post (35) of release (28) central perforation (29) and the bonnet lock hole (31) of snap close (30) bottom surface and misplace; Between the sidewall of release (28) and snap close (30) madial wall, be provided with a round groove, be built-in with latch spring (34-2);
Relative with the sidewall of " L " shape snap close (30), be provided with one at the opposite side of release (28) and can lift up bar (32) around the tripping operation that is erectility of its rotation; Lift up in tripping operation and to be provided with one between inboard and release (28) sidewall of bar (32) and to lift up bar spring (34-1); Lift up bar (32) outside in tripping operation and be provided with a tripping coil (26) that is built-in with movable core (42), be with spring in the end of iron core (42), the end of iron core (42) faces the latter half that bar (32) are lifted up in tripping operation;
What be arranged on reset button (8) on the loam cake (2) each side stretches out the outrigger arm (35B) that resets, and going up hook block at each outrigger arm (35B) that resets has a upright reset lever (35A); At the middle part of each reset lever (35A), be provided with the gib head (36) of protrusion with two moving contact arm corresponding sections on the elasticity power supply input sheet metal (50,51); When earth leakage protective socket was in initial condition, gib head (36) was positioned at the top of moving contact arm, was in the volt attitude process that resets at earth leakage protective socket, and gib head (36) is positioned at the below of moving contact arm;
In the below that is arranged on the testing button (7) on the loam cake (2), fixedly be provided with a dropout top flat (37) above the bobbin of release (28); This dropout top flat (37) is " L " shape heat insulating lamella that a dextrorotation that has chamfering turn 90 degrees; Be provided with pumping slot in the bobbin upper surface left and right sides, in dropout top flat (37) and the bobbin contact-making surface left and right sides were provided with the pumping slot that salient point is hooked in the bobbin surface, dropout top flat (37) can freely move forward and backward at the bobbin upper surface; Have five holes on dropout top flat (37), one is the hole (37-C) that release (28) is exposed; One is the sidewall that makes snap close (30) from hole (37-D) that dropout top flat (37) passes; One is the hole (37-B) that fixed-handle circuit breaker is lifted up bar (32); Two other is the hole (37-A) that is used for fixing two reset lever (35A);
Release (28), snap close (30), latch spring (34-2), dropout top flat (37), tripping operation lift up bar (32), reset lever (35A), lift up bar spring (34-1) be connected mutually become one can free movable integral body.
2, earth leakage protective socket according to claim 1 is characterized in that: at the middle part of described each reset lever (35A), be provided with the gib head (36) of two protrusions altogether with each two moving contact arm corresponding section of elasticity power supply input sheet metal (50,51); The middle part of two reset lever (35A), be provided with the gib head (36) of four protrusions altogether with four moving contact arm corresponding sections of a pair of elasticity power supply input sheet metal (50,51).
3, earth leakage protective socket according to claim 1 is characterized in that: at the middle part of described each reset lever (35A), be provided with the gib head (36) of a protrusion altogether with each two moving contact arm corresponding section of elasticity power supply input sheet metal (50,51); The middle part of two reset lever (35A), be provided with the gib head (36) of two protrusions altogether with four moving contact arm corresponding sections of a pair of elasticity power supply input sheet metal (50,51).
4, according to claim 1 or 2 or 3 described earth leakage protective sockets; it is characterized in that: the other end of described power firestreak input sheet metal (51) is the parallel a pair of elasticity moving contact arm (A-1, A-2) that is provided with laterally; its end end face respectively is provided with a moving contact (23,55), and moving contact (23) and the fixed contact (16) on the described power firestreak output conductor (14) on its outside moving contact arm (A-1) constitute pair of switches (K
R2-1), the moving contact (55) on its inboard moving contact arm (A-2) constitutes pair of switches (K with the fixed contact (53) that power firestreak is exported on the sheet metal (81)
R3-1);
The other end of described zero-power line input sheet metal (50) is the parallel a pair of elasticity moving contact arm (B-1, B-2) that is provided with laterally, its end end face respectively is provided with a moving contact (54,22), and moving contact (22) and the fixed contact (15) on the zero-power line output conductor (13) on its outside moving contact arm (B-2) constitute pair of switches (K
R2-2), the moving contact (54) on its inboard moving contact arm (B-1) constitutes pair of switches (K with the fixed contact (52) that zero-power line is exported on the sheet metal (80)
R3-2), above-mentioned four pairs of dynamic and static contacts constitute live wire, two groups of four couples of mains switch (K that be arranged in parallel of zero line altogether
R2-1, K
R3-1, K
R2-2, K
R3-2).
5, earth leakage protective socket according to claim 4 is characterized in that: the described testing button (7) that is arranged on the loam cake (2) is extended with a pin (40A) downwards, and the upper end of pin (40A) is with a spring (40); One lateral edges of testing button (7) is extended with an arm (46) downwards, the arm point is being pressed a metallic test sheet (47), also be provided with a sheet metal (47A) in the below of metallic test sheet (47), when earth leakage protective socket was in initial condition and reset mode, metallic test sheet (47) did not contact with sheet metal (47A); One end of metallic test sheet (47) links to each other with power firestreak, and the other end is unsettled, and the sheet metal (47A) that is positioned under it links to each other with zero-power line by a resistance;
When described testing button (7) is pressed to primary importance downwards, the bottom of its arm (46) compresses metallic test sheet (47), the unsettled end of metallic test sheet (47) contacts with sheet metal (47A), power firestreak is through metallic test sheet (47), sheet metal (47A), resistance and zero-power line short circuit, and artificial simulation produces leakage current;
When described testing button (7) continues to be pressed to the second place downwards; its pin (40A) that extends downwards presses the inclined-plane at described dropout top flat (37) chamfering place; promote the described tripping operation of dropout top flat (37) drive and lift up bar (32); reset lever (35A) moves to the tripping coil direction together; four moving contact arm (A-1 of gib head (36) on the described a pair of reset lever (35A) and elasticity power supply input sheet metal; A-2; B-1; B-2) separate; power supply input sheet metal (50; 51) moving contact arm (A-1; A-2; B-1; B-2) moving contact (23 on; 55; 54; 22) with power supply output conductor (13; 14) fixed contact (15 on; 16) and power supply output sheet metal (80; 81) fixed contact (53 on; 52) separate, cut off the power supply output of earth leakage protective socket by force.
6, earth leakage protective socket according to claim 5 is characterized in that: be provided with a power condition switch (K who is made by elastic metallic material between the bottom surface of described release (28) and circuit board (18)
R4), it and reset button (8) link; It is connected on control tripping coil (26) whether in the switching device such as silicon controlled control loop in electric generation magnetic field.
7, earth leakage protective socket according to claim 6 is characterized in that: this earth leakage protective socket also be provided with one with reset button (8) interlock be used to detect reset button (8) state of switch (K
R1); This switch series is associated in the control circuit; It is made up of fixed mount (101), two spring leafs (102,103), and two spring leafs (102,103) link to each other by being used to control the pin (2,3) that latchs flip chip (IC2) that count/resets of putting that produces the simulation leakage current whether automatically in resistance and the control circuit.
8, earth leakage protective socket according to claim 7 is characterized in that: the control circuit on the described control circuit board (18) comprise realize leakage current detects, reset button resets/threads off main circuit (U1), simulate leakage current generating circuit and display circuit (U2), reset button resets/trip status identification circuit (U3), analog detection feedback circuit (U4), resetting voltage output circuit (U5), life terminating detection judging circuit (U6), manual test circuit (U7) and socket output voltage display circuit (U8).
9, earth leakage protective socket according to claim 8, it is characterized in that: on described circuit board (18), be provided with two and be used to indicate the whether indicator light of end-of-life of earth leakage protective socket, one is normal condition indicator light (V17), and one is malfunction indicator light (V10); On two indicator lights (V17, V10), be provided with a light lead pipe (D) of vertically placing; the top of this light lead pipe (D) is positioned at indicator lamp hole (30-A) below on loam cake (2) surface, and the anaclasis of indicator light (V17, V10) being sent by light lead pipe (D) is to the surface of earth leakage protective socket.
10, earth leakage protective socket according to claim 9; it is characterized in that: below described elasticity power supply input sheet metal (50,51) acting arm (A-1, A-2, B-1, B-2), fixedly the bobbin of release (28) is provided with a pair of position-limited block (73,74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620148728 CN200972969Y (en) | 2006-10-13 | 2006-10-13 | Leakage protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620148728 CN200972969Y (en) | 2006-10-13 | 2006-10-13 | Leakage protection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200972969Y true CN200972969Y (en) | 2007-11-07 |
Family
ID=38884219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620148728 Expired - Lifetime CN200972969Y (en) | 2006-10-13 | 2006-10-13 | Leakage protection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200972969Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162815B (en) * | 2006-10-13 | 2010-12-01 | 黄华道 | Creepage protecting socket |
| CN103268844A (en) * | 2013-05-23 | 2013-08-28 | 浙江三蒙电气科技有限公司 | Residual current ground connection fault earth leakage protection socket with forceful tripping |
-
2006
- 2006-10-13 CN CN 200620148728 patent/CN200972969Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162815B (en) * | 2006-10-13 | 2010-12-01 | 黄华道 | Creepage protecting socket |
| CN103268844A (en) * | 2013-05-23 | 2013-08-28 | 浙江三蒙电气科技有限公司 | Residual current ground connection fault earth leakage protection socket with forceful tripping |
| CN103268844B (en) * | 2013-05-23 | 2015-11-18 | 浙江三蒙电气科技有限公司 | A kind of with mandatory dropout residual current earth fault earth leakage protective socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20071107 Effective date of abandoning: 20061013 |