CN101192731B - Secure leakage protection jack with life termination detection function - Google Patents

Secure leakage protection jack with life termination detection function Download PDF

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Publication number
CN101192731B
CN101192731B CN2006101146487A CN200610114648A CN101192731B CN 101192731 B CN101192731 B CN 101192731B CN 2006101146487 A CN2006101146487 A CN 2006101146487A CN 200610114648 A CN200610114648 A CN 200610114648A CN 101192731 B CN101192731 B CN 101192731B
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China
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sheet metal
power
release
zero
output
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CN2006101146487A
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CN101192731A (en
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黄华道
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黄华道
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Publication of CN101192731B publication Critical patent/CN101192731B/en
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Abstract

The invention discloses a leakage protection socket for automatically detecting life termination and displaying detecting result, which is characterized in that a pair of elastic metal sheets connected with a power supply output terminal are added on a socket circuit board; the metal sheets are provided with a pair of moving contacts; a power supply conductor is provided with two pairs of static contacts; the two pairs of static contacts on the power supply output conductor respectively correspond to a moving contact on a power supply input metal sheet and a moving contact on the elastic metal sheets so as to form two groups of and four pairs of switches. A circuit for detecting the life termination is added on the circuit board. When the socket is connected with the power supply, the detection function for leakage protection can be automatically operated. If the termination of socket life is found, a reset button is prevented from resetting so that no power supply can be output from a loading terminal of the socket or from an output hole of the power supply. The invention has complete function and good safety and can ensure personal safety of users and electrical apparatus safety indeed.

Description

Secure leakage protection jack with life end checking function
Technical field
The present invention relates to a kind of earth leakage protective socket; especially refer to need not to operate the secure leakage protection jack that any parts just can carry out life-span stop detection to earth leakage protective socket automatically and show testing result after a kind of power line in earth leakage protective socket power input and wall connects; simultaneously; this earth leakage protective socket can also be threaded off by force by mechanical structure, cuts off the power supply output of earth leakage protective 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 when its inner components and parts lost efficacy the forfeiture creepage protection function when its end-of-life, can in time be reminded the user in the use of earth leakage protective socket, change new product.
Yet; common in the market earth leakage protective socket; not only do not have life end checking function; and; when its end-of-life, concerning the user without any prompt facility, its reset button still can reset; the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face still has power supply output, misleads the user and continues to use.When leaky occurring, this earth leakage protective socket does not have any protective effect, very easily causes the get an electric shock generation of dead accident of user.
In addition, common in the market earth leakage protective socket does not also have reverse wiring error protection function.When the installer linked to each other the power line in the wall mistakenly with the load output of earth leakage protective socket, under the situation of not pushing reset button, the single-phase three-wire power supply output plughole on earth leakage protective socket surface promptly had power supply output.When leaky appearred in electrical appliance work, because reset button do not reset, electric-leakage detection circuit is work not, so 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 and need not to operate any parts after a kind of power line in earth leakage protective socket power input and wall connects and just can whether still have the secure leakage protection jack that creepage protection function detected and showed testing result to earth leakage protective socket automatically.As the earth leakage protective socket inner member is intact when not having end-of-life homing light Chang Liang, expression can be set up correct reset mechanism automatically and can be resetted, and after resetting, power supply output indicator Chang Liang illustrates that earth leakage protective socket can operate as normal; When earth leakage protective socket inner member open circuit or short circuit were end-of-life, the present invention did not work by homing light and represents this earth leakage protective socket end-of-life, the earth leakage protective socket of reminding the user in time more to renew.
Another object of the present invention provides a kind of secure leakage protection jack; when current leakage jack life termination; this earth leakage protective socket not only can not work by indicator light and reminds the user; but also stop reset button to reset; make the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face all not have power supply output, avoided when leaky occurs because of earth leakage protective socket end-of-life but it still has power supply to export the get an electric shock generation of dead accident of the user who causes.
Another purpose of the present invention provides a kind of earth leakage protective socket with mechanical tripping function.Components and parts in earth leakage protective socket; especially in the time of producing the tripping coil inefficacy of impact; when being current leakage jack life termination; the present invention can make earth leakage protective socket tripping operation/dropout mechanically by force; cut off the output of its power supply by force, and make this earth leakage protective socket of end-of-life can't reset again.
Another purpose of the present invention provides a kind of secure leakage protection jack with reverse wiring error protection function; when the installer linked to each other the power line in the wall mistakenly with earth leakage protective socket load output, the power supply output plughole of the power input of this earth leakage protective socket and receptacle face did not all have power supply output.
For achieving the above object, the present invention by the following technical solutions: a kind of secure leakage protection jack with life end checking function, it by housing, be installed in the earth leakage protective socket realized in the housing and have/circuit board of non-transformer output constitutes;
The differential differentiating transformer that the removable power firestreak input of elasticity sheet metal, the removable zero-power line input of elasticity sheet metal are installed, is used to detect leakage current on described circuit board with control the removable power firestreak of this elasticity, zero line input sheet metal and contact/or the mechanical trip device of disconnection with the socket power output conductor; It is characterized in that:
Described mechanical trip device comprises release, release power spring, reset guide post, back-moving spring, snap close, latch spring, dropout slide block and tripping coil;
Release be positioned at reset button under, be a cylinder; Its left and right sides stretches out to form and carries arm, and the removable power supply input of described elasticity sheet metal is positioned at the top that arm is carried in the release left and right sides, and can move up and down along with release; Its bottom is extended with an inserted link that plays fixation and guide effect downwards, is with the release power spring on the inserted link, and the inserted link that is with the release power spring passes circuit board and stretches out circuit board;
Be provided with a vertical central perforation at the top of release, 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; The bottom of described reset guide post, close its bottom have the locked groove of a circle depression;
At the middle part of release, cross release and be provided with " L " shape snap close of movably making by metal material, be provided with bonnet lock hole at the end face of snap close, be provided with a hole at the snap close end face near an end of testing button; Be contained in the interior reset guide post of release central perforation and the bonnet lock hole of snap close end face and be the dislocation shape; Between the sidewall of release and snap close madial wall, be provided with latch spring;
Be provided with a tripping coil that is built-in with movable core in the outside of snap close sidewall, the head of movable core is with the pagoda shape spring, and this movable core faces the sidewall of snap close; This snap close moves forward and backward and reset button is resetted or threads off/trip;
Described dropout slide block be positioned at testing button under, be fixed in the coil rail bracket, its upper surface is provided with inclined downward, its each side extend downwards one the retaining pin; Wherein retaining was worn the hole of snap close end; The end of the haptic element that testing button extends downwards is taper or triangle, and its end is just corresponding with the inclined-plane of dropout slide block upper surface; Push testing button downwards, its end is that taper or leg-of-mutton haptic element contact with the inclined-plane of dropout slide block and promote the dropout slide block and move forward and backward;
Described release, snap close, latch spring and dropout slide block be connected mutually become one can be free movable integral body.
At the retaining pin place of described dropout slide block near differential differentiating transformer one side, be provided with two sheet metals, these two sheet metals constitute a leakage tests switch;
Wherein, an end of a sheet metal contacts with the retaining pin of dropout slide block, and the other end links to each other with the power input zero line;
One end of another sheet metal does not contact with sheet metal, and the other end links to each other with the power output end live wire; When testing button was not pressed, the leakage tests switch that sheet metal constitutes disconnected; When testing button is pushed downwards, the leakage tests switch closure that sheet metal constitutes.
Described testing button is moved to primary importance downwards, the inclined-plane promotion dropout slide block that the haptic element that testing button extends downwards acts on described dropout slide block upper surface moves to primary importance, makes two sheet metals contacts that constitute the leakage tests switch produce the simulation leakage current;
Described testing button continues to be moved to the second place downwards, the inclined-plane that the haptic element that testing button extends downwards continues to act on described dropout slide block upper surface promotes the dropout slide block and moves to the second place, the snap close that spurs in the described mechanical trip device moves, and reset button is threaded off by force/tripped.
On described circuit board, the bottom side of close release is somebody's turn to do " F " shape sheet metal and release power spring and constitutes that link with reset button, as to react a reset button state sensitive switch to also being provided with " F " shape sheet metal;
A long handle is extended in the upper end of release power spring, and this long handle extends to " F " shape sheet metal open side, it from static state to the reset mode along with release together along in " F " shape sheet metal open side, upper and lower position moves; Release power spring lower end links to each other with ground by a controllable silicon, and " F " shape sheet metal links to each other with the live wire line of ac power input end by tripping coil;
When described reset button was in trip status, release power spring long handle just in time was positioned at the groove in the middle of " F " shape sheet metal, and sensitive switch is an off-state; Push reset button, release power spring long handle just touches the outstanding position of " F " shape sheet metal open side bottom, and sensitive switch is closure state; When reset button was in reset mode, release power spring long handle touched outstanding position, " F " shape sheet metal open side top, and sensitive switch is a closure state.
Described socket power output conductor comprises the power firestreak output that is with power firestreak output connection screw that is welded on the circuit board, be welded on the zero-power line output that is with zero-power line output connection screw on the circuit board and be arranged on power firestreak output conductor, the zero-power line output conductor of housing insulation middle layer bracket both sides;
One end of power firestreak input sheet metal passes described differential differentiating transformer and is welded on the circuit board with power supply input wires sheet, links to each other with power firestreak in the wall by power firestreak input wires screw, and the other end is provided with a moving contact; One end of zero-power line input sheet metal passes described differential differentiating transformer and is welded on the circuit board with power supply input wires sheet, links to each other with zero-power line in the wall by zero-power line input wires screw, and the other end is provided with a moving contact;
The power firestreak output is welded on the circuit with the elastic sheet metal contact that is arranged on circuit board top, and links to each other with power firestreak output connection screw, is provided with a moving contact at the other end of elastic sheet metal; The zero-power line output is welded on the circuit board with the elastic sheet metal contact that is arranged on circuit board top, and links to each other with zero-power line output connection screw, also is provided with a moving contact at the other end of elastic sheet metal;
The power firestreak output conductor that is arranged on housing middle layer bracket one side is provided with two sheet clip leaf wings, and two supply hub firewire jacks with receptacle face are vertical up and down corresponding respectively for two sheet clip leaf wings; Be arranged on the zero-power line output conductor of housing middle layer bracket opposite side and also be provided with two sheet clip leaf wings, two supply hub zero line jacks with receptacle face are vertical up and down corresponding respectively for two sheet clip leaf wings;
On the power firestreak output conductor, be provided with two fixed contacts; On the zero-power line output conductor, be provided with two fixed contacts;
Moving contact on the power firestreak input sheet metal is vertical up and down corresponding with a fixed contact on the power firestreak output conductor, contact/or disconnect the formation pair of switches; Moving contact on the elastic sheet metal is vertical up and down corresponding with another fixed contact on the power firestreak output conductor, contact/or disconnect and constitute another to switch; Moving contact on the zero-power line input sheet metal is vertical up and down corresponding with a fixed contact on the zero-power line output conductor, contact/or it is another to switch to disconnect formation; Moving contact on the elastic sheet metal is vertical up and down corresponding with another fixed contact on the power firestreak output conductor, contact/or disconnect and constitute pair of switches again; Come to four pairs of contacts and constitute live wire, two groups of four pairs of switches of zero line.
Described elastic sheet metal lays respectively at described release both sides and carries the arm top; Moving contact and the position of the moving contact on the elastic sheet metal above release one side is carried arm on the described power firestreak input sheet metal are mutual cross-like;
Moving contact (54) on the described zero-power line input sheet metal and the position of moving contact above the release opposite side is carried arm on the elastic sheet metal also are to be mutual cross-like.
Under described elasticity zero-power line input sheet metal moving contact, be provided with a simulation leakage current current-limiting resistance, this resistance one is rectified facing to moving contact, the other end links to each other with live wire on the circuit board through described tripping coil, and contacting with disconnecting of moving contact and resistance constitutes a leakage current analog switch that links with reset button;
When earth leakage protective socket was in initial condition, the moving contact on the described elasticity zero-power line input sheet metal contacted with simulation leakage current current-limiting resistance; After earth leakage protective socket resetted, the moving contact on the described elasticity zero-power line input sheet metal disconnected with simulation leakage current current-limiting resistance;
When earth leakage protective socket is in initial condition; the power input zero line links to each other with power firestreak on the circuit board through leakage current analog switch, simulation leakage current current-limiting resistance, tripping coil, forms to need not to operate any parts and can produce the loop of simulating leakage current automatically.
Connecting with the mains at earth leakage protective socket is in initial condition, and described leakage current analog switch is in closure state, and the sensitive switch that is made of " F " shape sheet metal and release power spring is in off-state; In the process that reset button resets, the leakage current analog switch becomes from the state of not opening as yet, sensitive switch is closed that the leakage current analog switch is opened, the state of sensitive switch closure.
On described circuit board, be provided with a homing light, on middle layer bracket, be provided with the state that a power supply output indicator is represented earth leakage protective socket; Be provided with a light lead pipe of vertically placing above the indicator light at two, the top of this light lead pipe is positioned at the indicator lamp hole below of cap surface;
Described power supply output indicator is connected in parallel between earth leakage protective socket power output end live wire, the zero line; Described homing light is connected in the controllable silicon conducting loop.
Because the present invention adopts above technical scheme; make the present invention not only have creepage protection function, and, after the power firestreak in the present invention and wall, zero line are connected; need not to operate any parts can detect by automatic creepage protection function to earth leakage protective socket, and shows testing result.Can make homing light Chang Liang when the earth leakage protective socket inner member is intact, can sets up correct reset mechanism automatically, reset button is resetted, after resetting, power supply output indicator Chang Liang illustrates earth leakage protective socket energy operate as normal; When earth leakage protective socket inner member open circuit or short circuit are current leakage jack life termination; the present invention does not work by making homing light; the mode that stops reset button to reset represents that the earth leakage protective socket life-span stops; 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; avoid when leaky occurring 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; particularly when the tripping coil fault or controllable silicon opens circuit or the leakage current detecting element damages can't operate as normal the time, can cut off the power supply output of socket mechanically by force by pushing testing button.Function of the present invention 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 present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 removes front view behind the loam cake for the present invention;
Fig. 4 concerns schematic diagram for each module position on the circuit board of the present invention;
Fig. 5-1 is the B-B direction partial sectional view along Fig. 3, and each module position concerns schematic diagram when socket initial condition and the output of tripped condition non-transformer;
Fig. 5-2 is the B-B direction partial sectional view along Fig. 3, and moment socket non-transformer each module position of when output of pushing reset button concerns schematic diagram;
Fig. 5-3 is the B-B direction partial sectional view along Fig. 3, and the reset button socket operate as normal that resets has power supply each module position of when output to concern schematic diagram;
Fig. 6-1 is the C-C direction partial sectional view along Fig. 3, and each module position concerned schematic diagram when reset button reset power socket operate as normal had power supply output;
Fig. 6-2 is the C-C direction partial sectional view along Fig. 3, and the moment that testing button is pressed, each module position concerned schematic diagram;
Fig. 6-3 is the C-C direction partial sectional view along Fig. 3, and each module position concerns schematic diagram when pushing the output of testing button socket tripping operation/reset button dropout socket non-transformer;
Fig. 6-4 is the C-C direction partial sectional view along Fig. 3, and each module position concerns schematic diagram when continuing to push testing button and making socket tripping operation/reset button thread off cut off socket power output by force;
Fig. 7 is the A-A direction partial sectional view along Fig. 3, and each module position concerns schematic diagram during the output of socket initial condition non-transformer;
Fig. 8 is control circuit physical circuit figure of the present invention.
Embodiment
As shown in Figure 1, earth leakage protective socket disclosed by the invention mainly by housing, be installed in the earth leakage protective socket realized in the housing and have/circuit board 18 of non-transformer output constitutes.
Described housing is combined by loam cake 2, insulation middle layer bracket 3 and base 4; Between loam cake 2 and insulation middle layer bracket 3, be provided with metal ground connection mounting panel 1; Between insulation 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 insulation middle layer bracket 3 and contact with assembly on the circuit board 18.Be provided with four grab 2-A in the side of loam cake 2, be used for fixing with the draw-in groove 4-B of base 4 inboards.
Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A, lead between loam cake 2 and insulation middle layer bracket 3.On metal ground connection mounting panel 1, should locate to be provided with ground connection blade 11,12 with the ground hole of loam cake 2 power supply output plugholes 5,6 is up and down vertical opposite.Two ends at metal ground connection mounting panel 1 are provided with installing hole 13B.
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 the both sides of the middle layer bracket 3 that insulate.At the two ends of power supply output conductor 13,14, should locate to be provided with sheet clip leaf wing 60,61,62,63 with null line hole, the live wire hole of loam cake 2 power supply output plugholes 5,6 are up and down vertical opposite.On power supply output conductor 13,14, be respectively equipped with two fixed contacts 15,52 and 16,53, form two groups of fixed contacts 15,16 and 52,53.
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 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 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, the function that mechanically socket is threaded off by force.
As Fig. 1, shown in Figure 4, this circuit board 18 is provided with two removable zero-power lines of elasticity, 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 power supply input wires sheet 24,25, 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 the removable power supply input of elasticity sheet metal 50,51 is respectively equipped with moving contact 54 and 55.Moving contact 54,55 respectively with the power supply output conductor 13,14 that is arranged on the middle layer bracket 3 on one group of fixed contact 52,53 (as shown in Figure 3) up and down vertical opposite should, contact/or disconnect to constitute two pairs of switches.Above circuit board 18, both sides also are provided with two removable sheet metals 20,21 of elasticity; One end of the removable sheet metal 20,21 of elasticity is welded on the circuit board with zero-power line, 80,81 contacts of live wire output, and link to each other with the power supply output connection screw 109,110 that is arranged on base 4 both sides, the other end is provided with moving contact 22,23, this to moving contact 22,23 respectively with power supply output conductor 13,14 on another group fixed contact 15,16 up and down vertical opposite should (as shown in Figure 3), contact/or disconnect and constitute two pairs of switches.Dynamic and static contact on above-mentioned power supply input sheet metal 50,51, power supply output conductor 13,14 and the elastic sheet metal 20,21 constitutes zero line, two groups of four pairs of mains switches 54 of live wire and 52,22 and 15,55 and 53,23 and 16 altogether, correspond respectively to the K switch R-2-2 on the circuit diagram 8, KR-3-2, KR-2-1, KR-3-1.
Also be provided with the differential differentiating transformer 19 that is used to detect leakage current on circuit board 18, as shown in Figure 8, power firestreak HOT, zero line WHITE pass differential differentiating transformer 19 (L1 among Fig. 8, L2).When leaky occurring in the current supply circuit; differential differentiating transformer will detect control chip IC (model is LM1851/RV4145) to leakage current by output voltage signal; the pin one output control signal of chip IC makes the mechanical trip device action on the circuit board 18; reset button is threaded off; the power supply output of earth leakage protective socket is cut off in the earth leakage protective socket tripping operation.
Shown in Fig. 1, Fig. 4, Fig. 5-1, on circuit board 18, also be provided with can make the removable power supply of elasticity input sheet metal 50,51 is connected with power supply output conductor 13,14 electric power/or disconnect and by power supply output conductor 13,14 make the removable sheet metal of elasticity 20,21 charged/or cut off the power supply, and then make power output end 80,81 charged/or the mechanical trip device that cuts off the power supply.This mechanical trip device comprises release 28, release power spring 69, reset guide post 35, back-moving spring 91, snap close 30, latch spring 34, dropout slide block 37 and tripping coil 26.
Release 28 be positioned at reset button 8 under, be a cylinder; Its left and right sides stretches out to form and carries arm, and the removable power supply input of elasticity sheet metal 50,51, the removable sheet metal 20,21 of elasticity are positioned at the top that arm is carried in release 28 left and right sides, and can move up and down along with release 28; Its bottom is extended with an inserted link 68 that plays fixation and guide effect downwards, is with release power spring 69 on the inserted link 68, and the inserted link 68 that is with release power spring 69 passes circuit board 18 and stretches out circuit board 18.As shown in Figure 4, moving contact 54 on the removable zero-power line input of the elasticity sheet metal 50 is mutual cross-like with the position of moving contact 22 above release 28 1 sides are carried arm on the removable sheet metal 20 of elasticity, equally, moving contact 55 on the removable power firestreak input of the elasticity sheet metal 51 and the position of moving contact 23 above release 28 opposite sides are carried arm on the removable sheet metal 21 of elasticity also are mutual cross-like.
As Fig. 5-1, be provided with a vertical central perforation 29 at the top of release 28, 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.Have the locked groove 36 of a circle depression in the bottom of reset guide post 35, close its bottom, the bottom surface of reset guide post 35 is the plane.
At the middle part of release 28, cross release 28 and be provided with " L " shape snap close 30 of movably making by metal material.End face at snap close 30 is provided with bonnet lock hole 31.When earth leakage protective socket initial condition non-transformer was exported, the bonnet lock hole 31 that is contained in reset guide post 35 and snap close 30 end faces in release 28 central perforations 29 was the dislocation shape.Be provided with a hole 32 at the end face of snap close 30 near an end of testing button 7.Between the sidewall of release 28 and snap close 30 madial walls, be provided with a circular recess 33, be built-in with latch spring 34.Be provided with a tripping coil 26 in the outside of snap close 30 sidewalls, be provided with a movable core 42 in the tripping coil 26, its head is with pagoda shape spring 42A.Tripping coil 26 built-in movable cores 42 face the sidewall of snap close 30.Snap close 30 can move forward and backward under the effect of movable core 42, and movable core can turn back to initial position under the effect of the pagoda shape spring 42A of its end, thereby reset button 8 is resetted or threads off (tripping operation).As shown in Figure 1; above tripping coil 26, be provided with a coil protect frame 41; these fender bracket 41 tops are provided with two and are used for the gib head 41-A that hook the moving contact on the removable elastic sheet metal 20,21; its below also is provided with two and is used for the gib head 41-B that hook the wiring board below; its left and right sides is leaned on mutually with power output end 81,80, and middle layer bracket one end is pushed down on the protective cover 41.
Dropout slide block 37 be positioned at testing button 7 under, be fixed in the coil rail bracket 26-A, its upper surface is provided with inclined downward 37-A, it each side extends a retaining pin 37-B, 37-C downwards.Wherein one is kept off the hole 32 that pin 37-C passes snap close 30 ends.The end of the haptic element 40A that is with spring 40 that testing button 7 extends downwards is taper or triangle, the just corresponding or contact in its end with the inclined-plane 37-A of dropout slide block 37 upper surfaces, its haptic element 40A that extends downwards acts on this inclined-plane 37-A during the test button action, and dropout slide block 37 is moved forward and backward.When pushing testing button 7 downwards, its end is that taper or the leg-of-mutton haptic element 40A slide block 37 that can promote to thread off moves forward and backward, thereby pulling snap close 30 moves, and makes reset button 8 reset/or thread off.
Release 28, snap close 30, latch spring 34 and the 37 mutual linkings of dropout slide block become one can free movable integral body.
Shown in Fig. 5-1, the present invention is on circuit board 18, and release power spring 69 places near overlapping on the release 28 bottom inserted links 68 are provided with " F " shape sheet metal 78.Should " F " shape sheet metal 78 and release power spring 69 constitute one with sensitive switches reset button 8 interlocks, that react reset button 8 states, as the KR-4 among Fig. 8.A long handle 69-A is extended in the upper end of release power spring 69, this long handle 69-A extends to " F " shape sheet metal open side intermediate openings 78-C place, it from static state to the reset mode along with release 28 together along in " F " shape sheet metal open side, upper and lower position moves.Release power spring 69 lower ends link to each other with ground by a controllable silicon, and " F " shape sheet metal 78 links to each other with the live wire of ac power input end by tripping coil 26.Shown in Fig. 5-1, when reset button 8 was in trip status, the long handle 69-A of release power spring 69 just in time was arranged in the groove 78-C in the middle of sheet metal 78 open side, and sensitive switch KR-4 disconnects.Shown in Fig. 5-2, when reset button 8 is pressed, release 28 is pressed towards down and moves, pressing the long handle 69-A of release power spring 69 to move vertically downward together, when the top of snap close 30 is run in the bottom of reset guide post 35, release power spring long handle 69-A just contacts conducting, sensitive switch KR-4 closure with the position 78-B that give prominence to " F " shape sheet metal 78 open side bottoms.Shown in Fig. 5-3, when the locked groove 36 of reset guide post 35 bottoms is locked in the bonnet lock hole 31 of snap close 30, release along with reset button, under the effect of the back-moving spring on the reset guide post 35 91, reset guide post 35 moves up release power spring 69 to be released promote release 28 and makes progress simultaneously, release power spring long handle 69-A also moves up thereupon, contacts conducting with the outstanding position 78-A on " F " shape sheet metal open side top, and sensitive switch KR-4 is still closed.So the sensitive switch that the present invention constitutes by release power spring 69 and sheet metal 78 is represented the state of reset button 8, when release power spring long handle 69-A was positioned at sheet metal intermediate groove position 78-C, expression reset button 8 was in trip status; When release power spring long handle 69-A contacted with sheet metal 78 bottom salient position 78-B, expression reset button 8 was pressed; When release power spring long handle 69-A contacted with sheet metal 78 top salient position 78-A, expression reset button 8 was in reset mode.
As shown in Figure 7, under the removable zero-power line input of elasticity sheet metal 50 moving contacts 54, be provided with a simulation leakage current current-limiting resistance R88, this resistance one is rectified facing to moving contact 54, the other end links to each other with live wire on the circuit board through tripping coil, contact and the disconnection of moving contact 54 and resistance R 88 constitutes a leakage current analog switch that links with reset button 8, as the K switch R-1 among Fig. 8.When reset button 8 is in trip status, the end that resistance R 88 makes progress just contacts with moving contact 54, leakage current analog switch KR-1 closure, zero-power line links to each other with power firestreak through leakage current analog switch KR-1, resistance R 88, tripping coil, forms to need not to operate the loop that any parts can produce the simulation leakage current automatically; At this moment, release power spring long handle 69-A is positioned at the middle part 78-C (shown in Fig. 5-1) of sheet metal 78, and promptly the K switch R-4 that is made of release power spring 69 and sheet metal 78 is in off-state.Press reset button, release power spring long handle 69-A contacts conducting (shown in Fig. 5-2) with the outstanding position 78-B in sheet metal 78 bottoms, and promptly the K switch R-4 that is made of release power spring 69 and sheet metal 78 is in closure state; Because release 28 moves down, zero-power line input sheet metal 50 is positioned at the top that arm is carried in the release side, still keep original position, the moving contact 54 on it continues the contact condition of maintenance and resistance R 88, and leakage current analog switch KR-1 still is a closure state.Continue to push reset button, when the locked groove 36 of reset guide post 35 bottoms is locked in the bonnet lock hole 31 of snap close 30, release along with reset button, reset guide post 35 moves up under the effect of back-moving spring 91, driving release 28 moves up, make and be positioned at the zero-power line input sheet metal of carrying on the arm release 28 sides 50 and on driving, moved, moving contact 54 separates disconnection with resistance R 88, leakage current analog switch KR-1 disconnects, and the moving contact 54 on the zero-power line input sheet metal 50 contacts conducting with the fixed contact 52 on the zero-power line output conductor 13; Release power spring long handle 69-A contacts conducting (shown in Fig. 5-3) with the outstanding position 78-A in sheet metal 78 tops, and promptly the K switch R-4 that is made of release power spring 69 and sheet metal 78 still is in closure state.
Fig. 8 is earth leakage protective socket of the present invention (GFCI) internal control circuit physical circuit figure.As shown in the figure, control circuit mainly detects control chip IC (LM1851/RV4145), the tripping coil 26 (SOL) that is built-in with iron core, controllable silicon V5, K switch R-1, KR-2-1, KR-2-2, KR-3-1, KR-3-2, KR-4, homing light V6, power supply output indicator V7 and the test resistance R88 with reset button RESET interlock and diode that some are relevant, resistance, electric capacity etc. by the differential differentiating transformer L1 (200: 1) that is used to detect leakage current and L2 (1000: 1), leakage current and forms.
Live wire HOT in the earth leakage protective socket supply line, zero line WHITE pass differential differentiating transformer L1, L2, differential differentiating transformer L1, L2 leakage current detection signal output link to each other with the signal input part 2,3,5,4 that leakage current detects control chip IC, and the control signal output ends 1 that leakage current detects control chip IC links to each other with the gate pole of controllable silicon V5; The negative electrode of controllable silicon V5 links to each other with dc power cathode, and the anode of controllable silicon V5 is through linking to each other with power firestreak HOT with sensitive switch KR-4, the tripping coil SOL of reset button RESET interlock; The iron core that is built in the tripping coil SOL makes reset button RESET reset/or thread off by mechanical trip gear, makes K switch R-2-1, KR-2-2, KR-3-1, KR-3-2 closure/or disconnect.
Between earth leakage protective socket load output live wire, zero line, be connected with power supply output indicator V7; In controllable silicon V5 conducting loop, be in series with homing light V6.
Power input zero line WHITE passes test coil L1 (200: 1) and L2 (1000: 1), link to each other with power input live wire HOT through leakage current analog switch KR-1, simulation leakage current current-limiting resistance R88, tripping coil 26 (SOL), constitute simulation leakage current generating loop.After this circuit connects the power line in the power input of earth leakage protective socket and the wall, need not to operate any parts and can produce a simulation leakage current automatically.
Connect with the mains reset button when not resetting at earth leakage protective socket, need not to operate any parts, because KR-1 is in closure state, above-mentioned simulation leakage current generating loop produces the simulation leakage current automatically.If earth leakage protective socket does not have end-of-life; leakage current flows through detection of electrical leakage coil L2 (1000: 1); magnetic test coil induces the voltage signal of certain value; voltage signal is by coupling capacitance C9; be input to the signal input part 2 of IC; 3; positive feedback outputs to 5 utmost points through IC; 4 utmost points (public pole); pass through C1 again; C2; L1 (200: 1) is fed to L2 (1000: 1); be transmitted back to the signal input part 3 of IC by C9; 2; after signal is exaggerated; export the gate pole of high-level control signal from 1 pin of IC to controllable silicon V5; controllable silicon V5 is triggered; the anode of controllable silicon V5 and negative electrode conducting, the homing light V6 that is connected in the indicating circuit between AB will be luminous, and expression earth leakage protective socket function is intact; have creepage protection function, reset button can reset.Otherwise if earth leakage protective socket end-of-life, then V6 is not luminous, and reset button can not be reset all the time, and the prompting user should change earth leakage protective socket.
Intact at earth leakage protective socket; do not have under the state of end-of-life; as Fig. 8; shown in Fig. 5-2; press reset button; leakage current analog switch KR-1 does not disconnect as yet; K switch R-4 closure; this moment is because the closure of KR-4 makes A point and B point short circuit; the voltage at former AB two ends is added on the tripping coil (SOL) 26; make tripping coil SOL have certain electric current to flow through and produce magnetic field, inner iron core 42 is done ballistic motion, promotes snap close 30 and moves; snap close 30 is opened; reset guide lock 35 below the reset button 8 can pass in the bonnet lock hole above the snap close 30 31, and the locked groove 36 of its underpart latches in the bonnet lock hole 31.Reset button 8 can reset, and the light-emitting diode V6 that is connected to simultaneously between A point, B point is in cut-off state, and the V6 lamp goes out.After resetting, shown in Fig. 5-3, because K switch R2-1, KR2-2, KR3-1, the closure of KR3-2, the power supply output indicator V7 that is connected between socket load output end power live wire, the zero line is lighted, and the single-phase three-wire jack of expression receptacle face and load output all have power supply output.
If current leakage jack life termination; all the time there is not big electric current to flow through in the tripping coil (SOL) 26; can't produce magnetic field; its built-in movable core 42 can not promote snap close 30 actions; snap close 30 can't be opened all the time; because bonnet lock hole 31 on the snap close 30 and the straight line dislocation about in the of 35 of reset guide lock; reset guide lock 35 below the reset button 8 can't pass in the bonnet lock hole above the snap close 30 31 all the time; reset button 8 can not reset all the time; the single-phase three-wire jack on earth leakage protective socket surface and load output all do not have power supply output, and homing light V6 and power supply output indicator V7 all do not work.
When function of socket is intact, after earth leakage protective socket correctly inserts power supply, press reset button RESET after, load end LOAD and receptacle face have electric power output, socket operate as normal.This moment is when having leakage current generating in the supply line, because power firestreak HOT and zero line WHITE pass described leakage current magnetic test coil L1 (200: 1) and L2 (1000: 1) simultaneously, two lines pass the vector of electric current of magnetic test coil and non-vanishing in the circuit, magnetic test coil induces the voltage signal of certain value at once, voltage signal is by coupling capacitance C9, be input to the signal input part 2 of IC1,3, through behind the IC again by positive feedback output 5,4 (public poles) pass through C1, C2, L1 (200: 1) is fed to L2 (1000: 1), be transmitted back to the signal input part 3 of IC1 by C9,2, signal amplifies, export the gate pole of dropout control signal from 1 pin of IC to controllable silicon V5, controllable silicon V5 is triggered, positive pole and negative pole conducting, thereby making the positive pole place B point of controllable silicon V5 is electronegative potential, because this moment, K switch R-4 was a closure state, A point and B point are same point, because of the other end of coil 26 links to each other with power firestreak, the two ends of coil 26 will obtain the voltage of certain value, there is certain electric current to flow through, produce magnetic field, its inner iron core is done ballistic motion and is promoted snap close 30 motions once more, make escape the bonnet lock hole 31 of locked groove 36 above snap close 30 of the reset guides lock 35 below the reset button 8, reset button is threaded off, the output of cutting off the electricity supply is shown in Fig. 5-1.
The present invention can also manually produce leakage current and detects whether end-of-life of earth leakage protective socket by pushing testing button TEST; Simultaneously can also continue to push testing button TEST and carry out machinery dropout by force, cut off the power supply output of earth leakage protective socket.Shown in Fig. 6-1 ∽ Fig. 6-4, at the retaining pin 37-B place of dropout slide block 37, two sheet metals 46,47 are installed near differential differentiating transformer 19 1 sides, sheet metal 46,47 constitutes a pair of leakage tests switch, as the KR-5 among Fig. 8.Wherein, an end of a sheet metal 46 contacts with the retaining pin 37-B of dropout slide block 37, and the other end links to each other with the power input zero line; One end of another sheet metal 47 does not contact with sheet metal 46, and the other end links to each other with socket load output live wire.When testing button 7 was not pressed, the leakage tests switch that sheet metal 46,47 constitutes disconnected, shown in Fig. 6-1.When testing button 7 is pressed to primary importance downwards, shown in Fig. 6-2, haptic element 40A below the testing button 7 promotes dropout slide block 37 directions to differential differentiating transformer 19 and moves to primary importance, make sheet metal 46,47 contacts, leakage tests K switch R-5 closure, with reference to figure 8, make power firestreak through resistance R 3 and zero-power line short circuit, artificial simulation produces leakage current.Have creepage protection function if earth leakage protective socket is working properly, reset button 8 is threaded off, and the earth leakage protective socket tripping operation is cut off its power supply output, shown in Fig. 6-3; If earth leakage protective socket can not trip, this earth leakage protective socket end-of-life is described.
At this moment, can continue to push testing button 7 downwards, shown in Fig. 6-4, cut off the power supply output of socket by force by mechanical device to the second place.Shown in Fig. 6-4; after current leakage jack life termination can't trip; can continue to push testing button 7 downwards; the haptic element 40A that testing button 7 is extended downwards continues to move down along the inclined-plane 37-A of dropout slide block 37 upper surfaces; promoting dropout slide block 37 continues to move to the second place to the direction of differential differentiating transformer 19; pulling snap close 30 moves to the direction of differential differentiating transformer 19 together; bonnet lock hole 31 above the snap close 30 is opened; escape the bonnet lock hole 31 of locked groove 36 above snap close 30 of the reset guide lock 35 below the reset button 8; release 28 falls; elasticity power supply input sheet metal 50; 51; elastic sheet metal 20; 21 fall simultaneously; make its moving contact and power supply output conductor 13; fixed contact on 14 disconnects, power supply output conductor 13; 14; power output end 80; 81 is not all charged.Because power supply output conductor 13,14, power output end 80,81 are all not charged, cut off the power supply output of socket by force.
As shown in Figure 8, the present invention also has reverse wiring error protection function.When the installer links to each other the power line in the wall mistakenly with earth leakage protective socket load output LOAD; the present invention need not to operate any parts can produce the circuit of simulation leakage current automatically (by leakage current analog switch KR-1; resistance R 88; tripping coil SOL constitutes) can't produce leakage current; the detection of electrical leakage chip IC can't be exported control signal; not conducting of controllable silicon V5; there is not electric current to flow through in the tripping coil SOL; can't produce magnetic field and promote built-in iron core action wherein; the machinery trip gear is failure to actuate; automatically stop reset button to reset; the output of socket non-transformer; homing light does not work, and shows wiring error.After the erector had only wiring correct, homing light was just bright, and reset button just can reset, and the earth leakage protective socket power output end just has power supply output.
More than various situations, must suppress the generation of false triggering through being attempted by the filtering of the anti-interference capacitor C 7 between silicon controlled control end and the ground from the control signal of 1 pin of IC output.
As Fig. 8, shown in Figure 7, the present invention is provided with a redness or yellow homing light V6 on circuit board 18, is provided with the state that a green or red power supply output indicator V7 represent earth leakage protective socket on middle layer bracket 3.They, expose from status indicator lamp hole 30-A shown in Figure 2 the surface of the anaclasis of being sent to earth leakage protective socket by light lead pipe D.When earth leakage protective socket do not have end-of-life, when still having creepage protection function, homing light V6 is bright; When current leakage jack life termination, homing light V6 does not work.When earth leakage protective socket had power supply output, V7 was bright for the power supply output indicator, otherwise V7 does not work.
As shown in Figure 4, the present invention also below the elasticity power supply input sheet metal 50,51 and elastic sheet metal 20,21 below, be provided with two pairs of position-limited blocks 43,44 and 73,74.
In sum, because the present invention adopts above technical scheme, so earth leakage protective socket disclosed by the invention has following outstanding advantage:
(1) after the power line in earth leakage protective socket power input and the wall connects, need not to operate any parts, just can detect earth leakage protective socket automatically and whether still have the i.e. end-of-life whether of creepage protection function, and show testing result.
A. homing light Chang Liang when the earth leakage protective socket inner member is intact, expression can be set up correct reset mechanism automatically and can be resetted, and after resetting, power supply output indicator Chang Liang illustrates that earth leakage protective socket can operate as normal;
B. when earth leakage protective socket inner member open circuit or short circuit are end-of-life; homing light does not work; represent this earth leakage protective socket end-of-life; and stop reset button to reset, make the load output of earth leakage protective socket and the single-phase three-wire power supply output plughole of receptacle face all not have power supply output.
(2) has mechanical tripping function.
Components and parts in earth leakage protective socket; when the tripping coil that especially can produce impact lost efficacy, promptly during end-of-life, can make earth leakage protective socket tripping operation/dropout mechanically by force; cut off the output of its power supply by force, and make this earth leakage protective socket of end-of-life can't reset again.
(3) have manual detection and demonstration testing result function.
A. produce leakage current when manual simulation, earth leakage protective socket can be threaded off/be tripped, and homing light Chang Liang illustrates that earth leakage protective socket can operate as normal, and can reset, after resetting, and power supply output indicator Chang Liang;
B. produce leakage current when manually simulating; earth leakage protective socket can not be threaded off/be tripped; homing light does not work; this earth leakage protective socket end-of-life is described; the present invention stops reset button to reset, and makes 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.
(4) has the defencive function that prevents the reverse wiring mistake.
When erector or electrician are connected to the power line in the wall on the earth leakage protective socket output mistakenly, stop reset button to reset automatically, the output of socket non-transformer, homing light does not work, and shows wiring error.After the erector had only wiring correct, homing light was just bright, and reset button just can reset, and the earth leakage protective socket power output end just has power supply output.
In a word, the present invention has that function is complete, fail safe good, and is safe in utilization, can guarantee the advantage of user's personal safety.
The above is specific embodiments of the invention and the know-why used, and is any based on the equivalent transformation on the technical solution of the present invention basis, all belongs within the protection range of the present invention.

Claims (10)

1. secure leakage protection jack with life end checking function, it by housing, be installed in that the earth leakage protective socket realized in the housing has or the circuit board (18) of non-transformer output constitutes;
The differential differentiating transformer (19) and the removable power firestreak of this elasticity of control, the zero line that the removable power firestreak input of elasticity sheet metal (51), the removable zero-power line input of elasticity sheet metal (50) are installed, are used to detect leakage current on described circuit board are imported the mechanical trip device that sheet metal (50,51) contacts or disconnects with the socket power output conductor; It is characterized in that:
Described mechanical trip device comprises release (28), release power spring (69), reset guide post (35), back-moving spring (91), snap close (30), latch spring (34), dropout slide block (37) and tripping coil (26);
Release (28) be positioned at reset button (8) under, be a cylinder; Its left and right sides stretches out to form and carries arm, and the removable power firestreak of described elasticity, zero line input sheet metal (50,51) are positioned at the top that arm is carried in release (28) left and right sides, and can move up and down along with release (28); Its bottom is extended with an inserted link (68) that plays fixation and guide effect downwards, is with release power spring (69) on the inserted link (68), and the inserted link (68) that is with release power spring (69) passes circuit board (18) and stretches out circuit board (18);
Be provided with a vertical central perforation (29) at the top of release (28), the reset guide post (35) that is with back-moving spring (91) that is embedded in reset button (8) bottom surface can move up and down along central perforation (29); The bottom of described reset guide post (35), close its bottom have the locked groove (36) of a circle depression;
At the middle part of release (28), cross release (28) and be provided with " L " shape snap close (30) of movably making by metal material, end face at snap close (30) is provided with bonnet lock hole (31), is provided with a hole (32) at snap close (30) end face near an end of testing button (7); The bonnet lock hole (31) that is contained in interior reset guide post (35) of release (28) central perforation (29) and snap close (30) end face is the dislocation shape; Between the sidewall of release (28) and snap close (30) madial wall, be provided with latch spring (34);
Be provided with a tripping coil (26) that is built-in with movable core (42) in the outside of snap close (30) sidewall, the head of movable core (42) is with pagoda shape spring (42A), and this movable core (42) faces the sidewall of snap close (30); This snap close (30) moves and reset button (8) to be resetted or threads off;
Described dropout slide block (37) be positioned at testing button (7) under, be fixed in the coil rail bracket (26-A), its upper surface is provided with inclined downward (37-A), its each side extend downwards one the retaining pin (37-B, 37-C); Wherein a retaining pin (37-C) passes the hole (32) of snap close (30) end; The end of the haptic element (40A) that testing button (7) extends downwards is taper or triangle, and its end is just corresponding with the inclined-plane (37-A) of dropout slide block (37) upper surface; Push testing button (7) downwards, its end is that taper or leg-of-mutton haptic element (40A) contact with the inclined-plane of dropout slide block and promote dropout slide block (37) and move;
The mutual linking of described release (28), snap close (30), latch spring (34) and dropout slide block (37) becomes one can free movable integral body.
2. the secure leakage protection jack with life end checking function according to claim 1, it is characterized in that: locate near the retaining pin (37-B) of differential differentiating transformer (19) one sides at described dropout slide block (37), be provided with two sheet metals (46,47), these two sheet metals (46,47) constitute a leakage tests switch (KR-5);
Wherein, an end of a sheet metal (46) contacts with the retaining pin (37-B) of dropout slide block (37), and the other end links to each other with the power input zero line;
One end of another sheet metal (47) does not contact with sheet metal (46), and the other end links to each other with the power output end live wire; When not being pressed, the leakage tests switch that sheet metal (46,47) constitutes disconnects at testing button (7); When testing button (7) is pushed downwards, the leakage tests switch closure that sheet metal (46,47) constitutes.
3. the secure leakage protection jack with life end checking function according to claim 2, it is characterized in that: described testing button (7) is moved to primary importance downwards, the inclined-plane promotion dropout slide block (37) that the haptic element (40A) that testing button (7) extends downwards acts on described dropout slide block (37) upper surface moves to primary importance, makes two sheet metals (46, the 47) contact that constitutes leakage tests switch (KR-5) produce the simulation leakage current;
Described testing button (7) continues to be moved to the second place downwards, the inclined-plane that the haptic element (40A) that testing button (7) extends downwards continues to act on described dropout slide block (37) upper surface promotes dropout slide block (37) and moves to the second place, the snap close (30) that spurs in the described mechanical trip device moves, and reset button is threaded off by force.
4. the secure leakage protection jack with life end checking function according to claim 2, it is characterized in that: on described circuit board (18), the bottom side of close release (28) is somebody's turn to do " F " shape sheet metal (78) and release power spring (69) and constitutes that link with reset button (8), as to react reset button (a 8) state sensitive switch (KR-4) to also being provided with " F " shape sheet metal (78);
A long handle (69-A) is extended in the upper end of release power spring (69), this long handle (69-A) extends to " F " shape sheet metal (78) open side, it from static state to the reset mode along with release (28) together along in " F " shape sheet metal (78) open side, upper and lower position moves; Release power spring (69) lower end links to each other with ground by a controllable silicon, and " F " shape sheet metal (78) links to each other with the live wire line of ac power input end by tripping coil;
Described reset button (8) is when being in trip status, and release power spring long handle (69-A) just in time is positioned at the groove (78-C) in the middle of " F " shape sheet metal (78), and sensitive switch (KR-4) is an off-state; Push reset button (8), release power spring long handle (69-A) just touches the outstanding position (78-B) of " F " shape sheet metal (78) open side bottom, and sensitive switch (KR-4) is closure state; Reset button (8) is when being in reset mode, and release power spring long handle (69-A) touches outstanding position (78-A), " F " shape sheet metal (78) open side top, and sensitive switch (KR-4) is a closure state.
5. the secure leakage protection jack with life end checking function according to claim 4 is characterized in that: described socket power output conductor comprises the power firestreak output (81) that is with power firestreak output connection screw (110) that is welded on the circuit board, be welded on the zero-power line output (80) that is with zero-power line output connection screw (109) on the circuit board and be arranged on power firestreak output conductor (14), the zero-power line output conductor (13) of housing insulation middle layer bracket (3) both sides;
One end of the removable power firestreak input sheet metal of elasticity (51) passes described differential differentiating transformer (19) and is welded on the circuit board (18) with power supply input wires sheet (25), link to each other with power firestreak in the wall by power firestreak input wires screw (10), the other end is provided with a moving contact (55); One end of the removable zero-power line input sheet metal of elasticity (50) passes described differential differentiating transformer (19) and is welded on the circuit board (18) with power supply input wires sheet (24), link to each other with zero-power line in the wall by zero-power line input wires screw (9), the other end is provided with a moving contact (54);
Power firestreak output (81) is welded on the circuit with first elastic sheet metal (21) contact that is arranged on circuit board (18) top, and link to each other with power firestreak output connection screw (110), be provided with a moving contact (23) at the other end of first elastic sheet metal (21); Zero-power line output (80) is welded on the circuit board with second elastic sheet metal (20) contact that is arranged on circuit board (18) top, and link to each other with zero-power line output connection screw (109), also be provided with a moving contact (22) at the other end of second elastic sheet metal (20);
The power firestreak output conductor (14) that is arranged on housing middle layer bracket (3) one sides is provided with two sheet clip leaf wings (62,63), and two sheet clip leaf wings (62,63), two supply hubs (5, the 6) firewire jack with receptacle face respectively are vertical up and down corresponding; Be arranged on the zero-power line output conductor (13) of housing middle layer bracket (3) opposite side and also be provided with two sheet clip leaf wings (60,61), two sheet clip leaf wings (60,61), two supply hubs (5, the 6) zero line jack with receptacle face respectively are vertical up and down corresponding;
On power firestreak output conductor (14), be provided with two fixed contacts (16 and 53); On zero-power line output conductor (13), be provided with two fixed contacts (15 and 52)
Moving contact (55) on the removable power firestreak input sheet metal of elasticity (51) is vertical up and down corresponding with the fixed contact (53) on the power firestreak output conductor (14), and contact or disconnection constitute pair of switches; Moving contact (23) on first elastic sheet metal (21) is vertical up and down corresponding with another fixed contact (16) on the power firestreak output conductor (14), contact or disconnect and constitute another to switch; Moving contact (54) on the removable zero-power line input sheet metal of elasticity (50) is vertical up and down corresponding with the fixed contact (52) on the zero-power line output conductor (13), and contact or disconnection constitute another to switch; Moving contact (22) on second elastic sheet metal (20) is vertical up and down corresponding with another fixed contact (15) on the power firestreak output conductor (13), contact or disconnect and constitute pair of switches again; Come to four pairs of contacts (55 and 53,23 and 16,54 and 52,22 and 15) and constitute live wire, two groups of four pairs of switches of zero line.
6. the secure leakage protection jack with life end checking function according to claim 5 is characterized in that: described first, second elastic sheet metal (20,21) lays respectively at described release (28) both sides and carries the arm top;
The position that moving contact (55) on the removable power firestreak input sheet metal of described elasticity (51) and the moving contact (23) on first elastic sheet metal (21) are carried the arm top in release (28) one sides is mutual cross-like;
The position that moving contact (54) on the removable zero-power line input sheet metal of described elasticity (50) and the moving contact (22) on second elastic sheet metal (20) are carried the arm top at release (28) opposite side also is to be mutual cross-like.
7. the secure leakage protection jack with life end checking function according to claim 6, it is characterized in that: under removable zero-power line input sheet metal (50) moving contact of described elasticity (54), be provided with a simulation leakage current current-limiting resistance (88), this resistance one is rectified facing to moving contact (54), the other end links to each other with live wire on the circuit board through described tripping coil, and contacting with disconnecting of moving contact (54) and resistance (88) constitutes a leakage current analog switch (KR-1) that links with reset button (8);
When earth leakage protective socket was in initial condition, the moving contact (54) on the removable zero-power line input sheet metal of described elasticity (50) contacted with simulation leakage current current-limiting resistance (88); After earth leakage protective socket resetted, the moving contact (54) on the removable zero-power line input sheet metal of described elasticity (50) disconnected with simulation leakage current current-limiting resistance (88);
When earth leakage protective socket is in initial condition; power input zero line (WHITE) links to each other with power firestreak (HOT) on the circuit board through leakage current analog switch (KR-1), simulation leakage current current-limiting resistance (88), tripping coil, and formation need not to operate any parts can produce the loop of simulating leakage current automatically.
8. the secure leakage protection jack with life end checking function according to claim 7, it is characterized in that: connecting with the mains at earth leakage protective socket is in initial condition, described leakage current analog switch (KR-1) is in closure state, and the sensitive switch (KR-4) that is made of " F " shape sheet metal (78) and release power spring (69) is in off-state; In the process that reset button resets, leakage current analog switch (KR-1) becomes the state that leakage current analog switch (KR-1) is opened, sensitive switch (KR-4) is closed from the state of not opening as yet, sensitive switch (KR-4) is closed.
9. the secure leakage protection jack with life end checking function according to claim 8 is characterized in that: the control circuit that is printed on the described circuit board (18) is detected control chip (IC), the tripping coil (SOL) that is built-in with iron core, controllable silicon (V5), is constituted with the sensitive switch (KR-4) of reset button interlock by the differential differentiating transformer that is used to detect leakage current (L1, L2), leakage current;
Live wire in the earth leakage protective socket supply line, zero line pass differential differentiating transformer, differential differentiating transformer leakage current detection signal output links to each other with the signal input part (2,3) that leakage current detects control chip (IC), and the control signal output ends (1) that leakage current detects control chip (IC) links to each other with the gate pole of controllable silicon (V5); The negative electrode of controllable silicon (V5) links to each other with dc power cathode, and the anode of controllable silicon (V5) links to each other with power firestreak through sensitive switch (KR-4), the tripping coil (SOL) with the reset button interlock; Be built in switch closure or disconnection that iron core in the tripping coil (SOL) resets reset button by mechanical trip gear or threads off, links with reset button.
10. the secure leakage protection jack with life end checking function according to claim 9, it is characterized in that: on described circuit board (18), be provided with a homing light (V6), on middle layer bracket (3), be provided with the state of a power supply output indicator (V7) expression earth leakage protective socket; Be provided with a light lead pipe (D) of vertically placing above the indicator light at two, the top of this light lead pipe is positioned at indicator lamp hole (30-A) below on loam cake (2) surface;
Described power supply output indicator (V7) is connected in parallel between earth leakage protective socket power output end live wire, the zero line; Described homing light (V6) is connected in controllable silicon (V5) the conducting loop.
CN2006101146487A 2006-11-20 2006-11-20 Secure leakage protection jack with life termination detection function Expired - Fee Related CN101192731B (en)

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CN104456649B (en) * 2014-12-19 2016-08-17 广东美的厨房电器制造有限公司 Microwave oven and increasing apparatus thereof
CN108445383A (en) * 2018-05-08 2018-08-24 国网天津市电力公司 Power distribution automation banked relay batch detection device
CN111403243B (en) * 2020-06-08 2020-09-29 广东电网有限责任公司 Emergency cut-off device

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Publication number Priority date Publication date Assignee Title
CN2599734Y (en) * 2003-01-30 2004-01-14 黄华道 Automatic cut-off for arc fault
CN2729896Y (en) * 2004-09-16 2005-09-28 黄华道 Electromagnetic socker with earth leakage and arc protection function
CN2781596Y (en) * 2004-09-27 2006-05-17 黄华道 Electromagnet socket with leakage and arc protection function
CN200972972Y (en) * 2006-11-20 2007-11-07 黄华道 Safety leakage protection socket with service life stop detection function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2599734Y (en) * 2003-01-30 2004-01-14 黄华道 Automatic cut-off for arc fault
CN2729896Y (en) * 2004-09-16 2005-09-28 黄华道 Electromagnetic socker with earth leakage and arc protection function
CN2781596Y (en) * 2004-09-27 2006-05-17 黄华道 Electromagnet socket with leakage and arc protection function
CN200972972Y (en) * 2006-11-20 2007-11-07 黄华道 Safety leakage protection socket with service life stop detection function

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