CN101136548B - Creepage protecting socket - Google Patents
Creepage protecting socket Download PDFInfo
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- CN101136548B CN101136548B CN2006101128065A CN200610112806A CN101136548B CN 101136548 B CN101136548 B CN 101136548B CN 2006101128065 A CN2006101128065 A CN 2006101128065A CN 200610112806 A CN200610112806 A CN 200610112806A CN 101136548 B CN101136548 B CN 101136548B
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Abstract
This invention discloses a leakage protection socket with functions of testing the end of life automatically and displaying the test result characterizing in adding a pair of elastic metal plates connected with the output of a supply on the CB of a socket, in which, a pair of moving contactors is set on the metal plates and two pairs of static contactors are set on the output conductor of the supply and correspond to the moving contactors on the input metal plates of the supply and the elastic metal plates to constitute two sets of four pairs of switches, further more, a test circuit for end of life is added on the CB to test the leakage protection automatically and holds back reset of a reset button if it finds out the life of the socket is end when a socket is plugged to the supply and stops the load end of the socket and the output hole of the supply outputting power and reminds users to exchange the socket by a reset indication lamp.
Description
Technical field
The present invention relates to a kind of earth leakage protective socket; especially refer to a kind of any parts just can carry out life-span stop detection, demonstration testing result automatically to earth leakage protective socket earth leakage protective socket that need not to operate; simultaneously; this earth leakage protective socket can also be threaded off by force by mechanical structure, the output of cutting off the electricity supply.
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.
Summary of the invention
In view of the foregoing, main purpose of the present invention provides a kind of any parts just can detect and show testing result automatically to the creepage protection function of earth leakage protective socket earth leakage protective socket that need not to operate.Homing light Chang Liang when the earth leakage protective socket inner member is intact, expression can be set up correct reset mechanism and can resetting automatically, 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 are end-of-life; the present invention does not work by homing light and represents jack life termination and stop reset button to reset; make the single-phase three-wire power supply output plughole of the load output of earth leakage protective socket and receptacle face all not have power supply output, avoided when leaky occurring 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 object of the present invention provides a kind of earth leakage protective socket with mechanical tripping function.Components and parts in earth leakage protective socket, when the magnetictrip that especially can produce impact lost efficacy, promptly during end-of-life, the present invention can make earth leakage protective socket tripping operation/dropout mechanically by force, cuts off its power supply by force and exports.
For achieving the above object, the present invention by the following technical solutions: a kind of earth leakage protective socket, it by housing, be installed in the earth leakage protective socket realized in the housing and have/circuit board of unregulated power output constitutes; It is characterized in that:
The differential differentiating transformer that elasticity power firestreak input sheet metal, elasticity zero-power line input sheet metal are installed, is used to detect leakage current on described circuit board with control the tripgear whether this elasticity power firestreak, zero line input sheet metal and socket power output conductor contact;
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 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, 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, 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 board 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, 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 sheet clip leaf wings pass from the firewire jack of two supply hubs of receptacle face respectively; 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 sheet clip leaf wings pass from the zero line jack of two supply hubs of receptacle face respectively;
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 contact with the fixed contact on the power firestreak output conductor/or disconnection formation pair of switches; Moving contact on the elastic sheet metal contacts with fixed contact on the power firestreak output conductor/or disconnect and constitute pair of switches; Moving contact on the zero-power line input sheet metal contact with the fixed contact on the zero-power line output conductor/or disconnection formation pair of switches; Moving contact on the elastic sheet metal contacts with fixed contact on the zero-power line output conductor/or disconnect and constitute pair of switches; Come to four pairs of contacts and constitute live wire, two groups of four pairs of switches of zero line.
Position above moving contact on the described power firestreak input sheet metal and the moving contact on the elastic sheet metal are carried arm in the tripgear side is cross one another;
Position above moving contact (54) on the described zero-power line input sheet metal (50) and the moving contact on the elastic sheet metal (20) are carried arm in the tripgear side also is mutual intersection.
Described tripgear comprises release, snap close, latch spring, dropout lever and tripping coil;
Described release is a cylinder, is positioned at the below of reset button, and its top is provided with a vertical central perforation; Its left and right sides stretches out to form and carries arm; Described elasticity power supply input sheet metal and elastic sheet metal are positioned at the top that arm is carried in these release both sides;
In the bottom of release, cross release and be provided with " L " shape snap close of movably making by metal material, also be provided with a bonnet lock hole at the end face of snap close;
Between the sidewall of release and snap close sidewall, be provided with a circular recess, be built-in with a latch spring; Be provided with a tripping coil that is built-in with movable core in the outside of snap close sidewall; The built-in movable core of tripping coil faces the sidewall of snap close;
Be provided with a hole in the snap close top end, be installed with one " 7 " font dropout lever in the hole, this dropout lever is positioned at earth leakage protective socket testing button below;
Described release, snap close, latch spring and four on dropout lever are connected one of composition mutually can free movable integral body.
Under described elasticity power firestreak 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 is fixedly welded on the circuit board, link to each other with the zero line on the circuit board, contact and the disconnection of moving contact and resistance constitute a status switch, this status switch and reset button interlock.
On described circuit board, also be provided with one " ε " type sheet metal and a upright vertical bar sheet metal; The switch of " ε " type sheet metal and vertical bar sheet metal formation one and reset button interlock, " ε " type sheet metal links to each other with ground by a controllable silicon, and the vertical bar sheet metal links to each other with the zero line of ac power input end by status switch, simulation leakage current current-limiting resistance with an end of solenoid;
Side in the bottom of described release near " ε " type sheet metal is provided with an outstanding oval head, it from static state to the reset mode along with release together along in " ε " type sheet metal, upper and lower position moves.
When the initial state that earth leakage protective socket is connected with the mains, status switch is in closure state and the switch that is made of " ε " type sheet metal and a upright vertical bar sheet metal is in off-state; In pressing the process of reset button, become from the state that status switch is not opened as yet, switch is closed that status switch is opened, the state of switch closure.
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 were connected, need not to operate any parts can detect by automatic creepage protection function to earth leakage protective socket.Can make homing light Chang Liang when the earth leakage protective socket inner member is intact, can sets up correct reset mechanism automatically and also can reset, after resetting, power supply output indicator Chang Liang illustrates the earth leakage protective socket operate as normal; When earth leakage protective socket inner member open circuit or short circuit are end-of-life; the present invention does not work by making homing light; and the mode of not having resetting voltage output is represented end-of-life and is stoped 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; 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 a 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 partial sectional view of Fig. 3, socket initial condition schematic diagram
Fig. 5-2 is the B-B partial sectional view of Fig. 3, socket normal operating conditions schematic diagram
Fig. 5-3 is the B-B partial sectional view of Fig. 3, pushes testing button socket tripped condition schematic diagram
Fig. 5-4 is the B-B partial sectional view of Fig. 3, pushes testing button and makes socket trip status schematic diagram by force
Fig. 6-1 is the C-C partial sectional view of Fig. 3, socket initial condition schematic diagram
Fig. 6-2 is the C-C partial sectional view of Fig. 3, pushes the reset button solenoid conducting schematic diagram at a moment
Fig. 6-3 is the B-B partial sectional view of Fig. 3, socket normal operating conditions schematic diagram
Fig. 7 is the A-A partial sectional view of Fig. 3, socket initial condition schematic diagram
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 unregulated power output constitutes.
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.Be provided with four grab 2-A in the side of loam cake 2, be used for base 4 on groove 4-B fix.
Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A (as shown in Figure 1 and Figure 2), lead.On metal ground connection mounting panel 1, be provided with ground connection blade 11,12 with the ground hole corresponding section of loam cake 2 power supply output plugholes 5,6.Two ends at metal ground connection mounting panel 1 are provided with installing hole 13-B.
As Fig. 1, shown in Figure 3, a power firestreak output conductor 14 and a zero-power line output conductor 13 are installed in the both sides of the middle layer bracket 3 that insulate.At the two ends of power supply output conductor 13,14, be provided with sheet clip leaf wing 60,61,62,63 with null line hole, the corresponding section, live wire hole of loam cake 2 power supply output plugholes 5,6.On power supply output conductor 13,14, be respectively equipped with fixed contact 15,52 and 16,53, form two pairs 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 the function of testing result.
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, link to each other with zero-power line, live wire input wires screw 9,10 by input wires sheet 24,25, 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 is respectively equipped with moving contact 54 and 55. Moving contact 54,55 respectively be arranged on middle layer bracket 3 on power supply output conductor 13,14 on fixed contact 52,53 (as shown in Figure 3) corresponding.Above circuit board 18, both sides also are provided with two elastic sheet metals 20,21; One end of elastic sheet metal 20,21 is welded on the circuit board, and links to each other with the power supply output connection screw 109,110 that is arranged on base 4 both sides with zero-power line, 80,81 contacts of live wire output; The other end is provided with moving contact 22,23, this moving contact 22,23 respectively with power supply output conductor 13,14 on fixed contact 15,16 corresponding (as shown in Figure 3).Moving contact, fixed contact on above-mentioned power supply input sheet metal 50,51, power supply output conductor 13,14 and the elastic sheet metal 20,21 constitute 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 tripgear action on the circuit board 18; make the earth leakage protective socket tripping operation, the output of cutting off the electricity supply.
Shown in Fig. 1, Fig. 4, Fig. 5-1, on circuit board 18, also be provided with can make elasticity power supply input sheet metal 50,51 is connected with power supply output conductor 13,14 electric power/or disconnect and by power supply output conductor 13,14 make elastic sheet metal 20,21 charged/or cut off the power supply, and then make power output end 80,81 charged/or the tripgear that cuts off the power supply.This tripgear comprises release 28, reset guide post 35, snap close 30, latch spring 34, dropout lever 37 and tripping coil 26.Release 28 is positioned at the below of reset button 8, it is a cylinder, its left and right sides stretches out to form and carries arm, and elasticity power supply input sheet metal 50,51, elastic sheet metal 20,21 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.And, as shown in Figure 4, position above moving contact 54 on the zero-power line input sheet metal 50 is carried arm with the moving contact 22 on the elastic sheet metal 20 in release 28 sides is cross one another, equally, the position above the moving contact 55 on the power firestreak input sheet metal 51 is carried arm with the moving contact 23 on the elastic sheet metal 21 in release 28 sides also is cross one another.
As Fig. 5-1, be provided with a vertical central perforation 29 at the top of release 28, be embedded in the reset guide post 35 that is with back-moving spring 91 of 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, near its bottom.In the bottom 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.Between the sidewall of release 28 and snap close 30 inboards, be provided with a circular recess 33, be built-in 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 sidewalls.Tripping coil 26 built-in movable cores 42 face the sidewall of snap close 30.Be provided with a protective cover 41 above tripping coil 26, middle layer bracket one end is pushed down protective cover 41.
End at snap close 30 end faces is provided with a hole 32, in hole 32, be installed with one " 7 " font dropout lever 37, dropout lever 37 be positioned at testing button 7 below, be provided with a fulcrum 28-A at release 28 near on the sidewall of dropout lever 37, dropout lever 37 leans against on the fulcrum 28-A of release 28 sidewalls.
Shown in Fig. 6-1, the present invention also is provided with the upright vertical bar sheet metal 78 of one " ε " type sheet metal 77 and on circuit board 18." ε " type sheet metal 77 and vertical bar sheet metal 78 constitute a switch, as the KR-4 among Fig. 8.Side in the bottom of release 28 near sheet metal 77 is provided with an outstanding ellipse 28-C, it from static state to the reset mode along with release 28 together along in " ε " type sheet metal 77, upper and lower position moves.Shown in Fig. 6-1, when reset button 8 was in trip status, an oval 28-C just in time leaned against among the groove 77-B in the middle of the sheet metal 77, and extrusion metal sheet 77 not, and sheet metal 77 and 78 disconnects, K switch R-4 disconnection.Shown in Fig. 6-2, when pushing reset button 8, release 28 is pressed towards down and moves, driving an oval 28-C moves vertically downward, when the top of snap close 30 is run in the bottom of reset guide post 35, an oval 28-C just leans against the 77-C place, outstanding position of " ε " type sheet metal 77 bottoms, makes sheet metal 77 its head that is squeezed contact K switch R-4 closure with the head of sheet metal 78.Shown in Fig. 6-3, when the locked groove 36 of reset guide post 35 bottoms is buckled in the perforation 31 of snap close 30, release along with reset button, under the effect of the spring on the reset guide post 35 91, reset guide post 35 moves up spring 69 to be released promote release 28 and makes progress simultaneously, and an oval 28-C also moves up thereupon, is close on the outstanding position 77-A on " ε " type sheet metal 77 tops, sheet metal 77 its head that is squeezed contacts with the head of sheet metal 78, and K switch R-4 is still closed.The contact of two metal sheets 77,78/or disconnect formation one switch, this switch is corresponding to the K switch R-4 in the circuit diagram 8.
As shown in Figure 7, under elasticity power firestreak input sheet metal 51 moving contacts 55, be provided with a resistance 88, this resistance one is rectified facing to moving contact 55, the other end is fixedly welded on the circuit board, link to each other with the zero line on the circuit board, contact and the disconnection of moving contact 55 and resistance 88 constitute a status switch, as the K switch R-1 among Fig. 8.When reset button was in trip status, the end that resistance 88 makes progress just contacted with moving contact 55, K switch R-1 closure; Press reset button, an oval 28-C leans against on the outstanding position 77-C in bottom of sheet metal 77 and makes sheet metal 77,78 contacts, when promptly the K switch R-4 that is made of sheet metal 77,78 is in closure state, because release 28 moves down, power firestreak input sheet metal 51 is positioned at the top that arm is carried in the release side, still keep original position, the moving contact 55 on it continues the contact condition of maintenance and resistance 88, and K switch R-1 still is a closure state; Continue to push reset button, when the locked groove 36 of reset guide post 35 bottoms is buckled in the perforation 31 of snap close 30, release along with reset button, reset guide post 35 moves up, driving release 28 moves up, make to be positioned at the power firestreak input sheet metal of carrying on the arm release 28 sides 51 and to be moved on driving, moving contact 55 separates with resistance 88, and K switch R-1 disconnects; After resetting, moving contact 55 on the power firestreak input sheet metal contacts conducting with the fixed contact 53 on the power firestreak output conductor 14, moving contact 55 separates disconnection with resistance 88, and an oval 28-C leans against on the outstanding position 77-A in sheet metal 77 tops and makes sheet metal 77 contact conducting with 78.The contact of moving contact 55 and source resistance 88/or separate the composition pair of switches, this switch is corresponding to the K switch R1 on the circuit diagram 8, and resistance 88 is corresponding to the resistance R on the circuit diagram 83.
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 by two the differential differentiating transformer L1 (200:1) that are used to detect leakage current detect control chip IC (LM1851/RV4145) with L2 (1000:1), leakage current, be built-in with coil L3 (SOL), the controllable silicon V5 of iron core, 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 test resistance R88 with reset button RESET interlock and diode that some are relevant, resistance, electric capacity etc. form.
Power input zero line WHITE passes test coil L1 (200:1) is connected simulation leakage current current-limiting resistance R3 with L2 (1000:1) a end, the other end of resistance R 3 links to each other with the end of status switch KR1, the other end of status switch KR1 is connected again with by the end of solenoid L3, the node that an end and the end of the resistance R 4 of reset indicating circuit V6, R4 of K switch R4 are formed, and the other end by solenoid L3 directly links to each other with power input live wire HOT again.This circuit structure is being connected with the mains when not doing any operation socket, forms a power firestreak to solenoid L3, K switch R1, resistance R 3, pass the current circuit that induction coil arrives zero-power line again, produces a simulation leakage current automatically.
Connect with the mains reset button when not resetting at socket; because KR1 is in closure state; current circuit from the above mentioned; R88 gets electric generation simulation leakage current; 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), is 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 to controllable silicon V5 from 1 pin of IC, controllable silicon V5 is triggered, anodal and negative pole conducting; the V6 that is connected in the indicating circuit between AB will be luminous; expression earth leakage protective socket function is intact, has creepage protection function, and 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, and the prompting user should change earth leakage protective socket.
Shown in Fig. 8, Fig. 5-2, press reset button, K switch R1 disconnects as yet, and K switch R4 is when closed, this moment is because the closure of KR4 makes A point and B point short circuit, the voltage at former AB two ends is added on the solenoid L3, makes L3 have certain electric current to flow through and produces magnetic field, and inner iron core is done ballistic motion, snap close 30 is opened, can reset, 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, since K switch R2-1, KR2-2, KR3-1, the closure of KR3-2 is lighted the power supply output indicator V7 that is connected between power firestreak, the zero line, and the single-phase three-wire jack of expression receptacle face and load output all have power supply output.
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 circuit, 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 R4 was a closure state, A point and B point are same point, because of the other end of coil L3 links to each other with power firestreak, the two ends of L3 coil 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, reset button is threaded off, the output of cutting off the electricity supply is shown in Fig. 5-3.
When whether just often detecting the earth leakage protective socket function; can press (TEST) testing button; reset button machinery is threaded off; this moment is because the closure of K switch R1; produce a simulation leakage current and pass magnetic test coil; the voltage signal that magnetic test coil induces certain value is input to the input 3 of IC; 2; through the excitation of drawing the utmost point and positive feedback end 5; 1 pin of IC is exported the electric leakage triggering signal immediately; this signal is input to the gate pole of controllable silicon V5; controllable silicon V5 is triggered, and anodal and negative pole conducting is because this moment, K switch R4 was in off-state; pass through coil L3 from power firestreak; resistance R 4; light-emitting diode V6; controllable silicon V5 flows to the common ground end and forms current path; indicator light V6 is lighted, and the expression function of socket is intact, can reset.When earth leakage protective socket internal fault occurs and is end-of-life; press testing button; because the fault of inner member; make the detection of electrical leakage afunction; 1 pin of IC does not have control signal output; controllable silicon V5 can not be triggered; be in nonconducting state; the normal indicator light V6 of function of socket just can not lighted yet; therefore solenoid L3 can not get electric, pushes reset button and can not finish and reset, and illustrates that internal fault has appearred in this earth leakage protective socket; promptly end-of-life should in time be changed earth leakage protective socket.
In above various situations, the control signal of exporting from 1 pin of IC 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.
Shown in Fig. 5-4, the present invention can also carry out machinery dropout by force by pushing the TEST testing button, and testing button 7 passes middle layer bracket 3, and its top stands upright on dropout lever 37 tops.When needs detect earth leakage protective socket whether during end-of-life; perhaps work as earth leakage protective socket to end-of-life; carrying out the simulation leakage current threads off in the time of can't tripping; can continue to press testing button 7; top promotion dropout lever 37 tail ends of testing button 7 are moved down; pulling snap close 30; snap close opposite side spring 34 is compressed; locked groove 36 on the reset guide post 35 is jumped out in the perforation 31 of snap close 30; release 28 falls; elasticity power supply input sheet metal 50; 51 fall; make its moving contact and power supply output conductor 13; fixed contact on 14 disconnects; power supply output conductor 13; 14 is not charged, and then make and power output end 80; 81 elastic sheet metals 20 that link to each other; 21 is not charged yet.Because power supply output conductor 13,14, power output end 80,81 are all not charged, so the earth leakage protective socket load end is that power supply output plughole 5, the 6 equal non-transformers of power output end 80,81 and receptacle face are exported.
As shown in Figure 8; the present invention represents the state of earth leakage protective socket by two indicator lights that have that are arranged on the circuit board 18; one is green or yellow power supply output indicator V7; one is red homing light V6; 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 the light lead pipe.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 elasticity power supply input sheet metal 50,51 moving contacts and elastic sheet metal 20,21 below, be provided with two pairs of position-limited blocks 43,44 and 73,74.
In sum; the present invention not only has creepage protection function; and, after connecting, the power firestreak in the present invention and the wall, zero line can detect whether end-of-life of earth leakage protective socket automatically, if the earth leakage protective socket function is normal; still has creepage protection function; homing light Chang Liang, reset button can normally be resetted, after resetting; earth leakage protective socket has power supply output, and the power supply output indicator is bright.If current leakage jack life termination, homing light does not work, and the starting switch KR4 two ends that reset do not have resetting voltage U
AB, reset button can not reset, and 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.Function of the present invention is complete, fail safe good, and is safe in utilization, can guarantee user's personal safety.
Claims (5)
1. earth leakage protective socket, it by housing, be installed in the earth leakage protective socket realized in the housing and have/circuit board (18) of unregulated power output constitutes;
Elasticity power firestreak input sheet metal (51), elasticity zero-power line input sheet metal (50) are installed on described circuit board, are used to detect the differential differentiating transformer (19) of leakage current and this elasticity power firestreak of control, zero line and import the tripgear whether sheet metal (50,51) and socket power output conductor (13,14,80,81) contact;
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 middle layer bracket (3) both sides;
One end of power firestreak input sheet metal (51) passes described differential differentiating transformer (19) and is welded on the circuit board (18), links to each other with power firestreak in the wall by power firestreak input wires screw (10), and the other end is provided with a moving contact (55); One end of zero-power line input sheet metal (50) passes described differential differentiating transformer (19) and is welded on the circuit board (18), links to each other with zero-power line in the wall by zero-power line input wires screw (9), and the other end is provided with a moving contact (54);
Power firestreak output (81) is welded on the circuit board 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), 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) pass from the firewire jack of two supply hubs (5,6) of receptacle face respectively; 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) pass from the zero line jack of two supply hubs (5,6) of receptacle face respectively;
On power firestreak output conductor (14), be provided with first, second two fixed contacts (16 and 53); On zero-power line output conductor (13), be provided with first, second two fixed contacts (15 and 52);
Moving contact (55) on the power firestreak input sheet metal (51) contact with second fixed contact (53) on the power firestreak output conductor (14)/or disconnection formation pair of switches; Moving contact (23) on first elastic sheet metal (21) contacts with first fixed contact (16) on the power firestreak output conductor (14)/or disconnect and constitute pair of switches; Moving contact (54) on the zero-power line input sheet metal (50) contact with second fixed contact (52) on the zero-power line output conductor (13)/or disconnection formation pair of switches; Moving contact (22) on second elastic sheet metal (20) contacts with first fixed contact (15) on the zero-power line output conductor (13)/or disconnect and constitute pair of switches; 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;
Described tripgear comprises release (28), snap close (30), latch spring (34), dropout lever (37) and tripping coil (26);
Described release (28) is a cylinder, is positioned at the below of reset button (8), and its top is provided with a vertical central perforation (29); Its left and right sides stretches out to form and carries arm; Described elasticity zero-power line, live wire input sheet metal (50,51) and second, first elastic sheet metal (20,21) are positioned at the top that arm is carried in this release (28) both sides;
In the bottom of release (28), cross release and be provided with " L " shape snap close (30) of movably making by metal material, also be provided with a bonnet lock hole (31) at the end face of snap close (30);
Between the sidewall of release (28) and snap close (30) sidewall, be provided with a circular recess, be built-in with a latch spring (34); Be provided with a tripping coil (26) that is built-in with movable core (42) in the outside of snap close (30) sidewall; The built-in movable core (42) of tripping coil (26) faces the sidewall of snap close (30);
Be provided with a hole (32) in snap close (30) top end, be installed with one " 7 " font dropout lever (37) in hole (32), this dropout lever (37) is positioned at earth leakage protective socket testing button below;
(37) four on described release (28), snap close (30), latch spring (34) and dropout lever be connected mutually form one can free movable integral body;
Described elasticity power firestreak input sheet metal (51) is provided with a moving contact (55), under this moving contact (55), be provided with a simulation leakage current current-limiting resistance (R88), this resistance one is rectified the moving contact (55) facing to described elasticity power firestreak input sheet metal, the other end is fixedly welded on the circuit board, link to each other with the zero line on the circuit board, contacting with disconnection of the moving contact (55) of described elasticity power firestreak input sheet metal and resistance (R88) constitutes a status switch (KR-1), this status switch and reset button interlock.
2. earth leakage protective socket according to claim 1 is characterized in that: also be provided with one " ε " type sheet metal (77) and a upright vertical bar sheet metal (78) on described circuit board (18); The switch (KR-4) of " ε " type sheet metal (77) and vertical bar sheet metal (78) formation one and reset button interlock, " ε " type sheet metal (77) links to each other with ground by a controllable silicon (V5), and vertical bar sheet metal (78) links to each other with the zero line of ac power input end by status switch (KR-1), simulation leakage current current-limiting resistance (R3) with an end of solenoid (L3);
Be provided with an outstanding oval head (28-C) in the bottom of described release (28) near a side of " ε " type sheet metal (77), it from static state to the reset mode along with release (28) together along in " ε " type sheet metal (77), upper and lower position moves.
3. earth leakage protective socket according to claim 2, it is characterized in that: when the initial state that earth leakage protective socket is connected with the mains, described status switch (KR-1) is in closure state and the switch (KR-4) that is made of " ε " type sheet metal (77) and a upright vertical bar sheet metal (78) is in off-state; In pressing the process of reset button, become the state that status switch (KR-1) is opened, switch (KR-4) is closed from the state that status switch (KR-1) is not opened as yet, switch (KR-4) is closed.
4. earth leakage protective socket according to claim 3, it is characterized in that: on described circuit board, be provided with two and be used to indicate the whether indicator light of end-of-life of earth leakage protective socket, but one is reset mode indicator light (V6), and one for there being power supply output state indicator light (V7); On indicator light, be provided with a light lead pipe (LED1) of vertically placing; the top of this light lead pipe is positioned at indicator lamp hole (30-A) below on loam cake (2) surface, two anaclasis that indicator light sent is arrived the surface of earth leakage protective socket by light lead pipe (LED1).
5. earth leakage protective socket according to claim 4 is characterized in that: the below at described elasticity power firestreak input sheet metal (51) moving contact is provided with a position-limited block (74); Below at described elasticity zero-power line input sheet metal (50) moving contact is provided with another position-limited block (73);
Be provided with a position-limited block (43) in the below of described second elastic sheet metal (20);
Be provided with another position-limited block (44) in the below of described first elastic sheet metal (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101128065A CN101136548B (en) | 2006-09-01 | 2006-09-01 | Creepage protecting socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101128065A CN101136548B (en) | 2006-09-01 | 2006-09-01 | Creepage protecting socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101136548A CN101136548A (en) | 2008-03-05 |
| CN101136548B true CN101136548B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101128065A Expired - Fee Related CN101136548B (en) | 2006-09-01 | 2006-09-01 | Creepage protecting socket |
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| CN (1) | CN101136548B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950895B (en) * | 2010-08-06 | 2012-08-22 | 浙江万盛电气有限公司 | Leakage protection socket with reverse wiring and end of life detection function |
| DE102016218960B4 (en) * | 2016-09-30 | 2022-05-12 | Siemens Aktiengesellschaft | Switch |
| CN107959148A (en) * | 2016-10-14 | 2018-04-24 | 中国电力科学研究院 | A kind of remote-controlled direct current jack with current-limiting function |
| CN107221787B (en) * | 2017-07-21 | 2023-05-09 | 温州好惠电子电器制造有限公司 | Leakage protection indicating device, leakage protection plug and leakage protection socket |
| CN107658854A (en) * | 2017-09-27 | 2018-02-02 | 西安工业大学 | A kind of electric power earth leakage protective device |
| CN110571586B (en) * | 2019-09-29 | 2021-04-16 | 四川创未网络科技有限公司 | Waterproof socket capable of being used underwater and having conductive detection function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958895B1 (en) * | 2004-02-03 | 2005-10-25 | Pass & Seymour, Inc. | Protection device with a contact breaker mechanism |
| CN2741232Y (en) * | 2005-04-15 | 2005-11-16 | 黄华道 | Electromagnetic leakage preventing socket |
| CN2750539Y (en) * | 2004-10-22 | 2006-01-04 | 立维腾电子（东莞）有限公司 | Leakage protector |
| CN200947539Y (en) * | 2006-09-01 | 2007-09-12 | 黄华道 | Creepage protecting socket |
-
2006
- 2006-09-01 CN CN2006101128065A patent/CN101136548B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958895B1 (en) * | 2004-02-03 | 2005-10-25 | Pass & Seymour, Inc. | Protection device with a contact breaker mechanism |
| CN2750539Y (en) * | 2004-10-22 | 2006-01-04 | 立维腾电子（东莞）有限公司 | Leakage protector |
| CN2741232Y (en) * | 2005-04-15 | 2005-11-16 | 黄华道 | Electromagnetic leakage preventing socket |
| CN200947539Y (en) * | 2006-09-01 | 2007-09-12 | 黄华道 | Creepage protecting socket |
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| CN101136548A (en) | 2008-03-05 |
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