CN2807541Y - Electromagnetic type electric socket with electricity leak and electric arc protection function - Google Patents
Electromagnetic type electric socket with electricity leak and electric arc protection function Download PDFInfo
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- CN2807541Y CN2807541Y CN 200520001244 CN200520001244U CN2807541Y CN 2807541 Y CN2807541 Y CN 2807541Y CN 200520001244 CN200520001244 CN 200520001244 CN 200520001244 U CN200520001244 U CN 200520001244U CN 2807541 Y CN2807541 Y CN 2807541Y
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Abstract
The utility model discloses an electromagnetic type electric socket with the functions of electrical leakage and arc protection, which is mainly combined by an upper cover, a middle layer bracket and a base, wherein a grounded metallic mounting plate is installed between the upper cover and the middle layer bracket, and a control circuit board which can output socket power as well as detect and handle electrical leakage and arc faults is installed between the middle layer bracket and the base. The utility model is characterized in that a power supply fire wire and zero line input terminals which are connected with power input lines, elastic moving-contact metal bridge which is connected with a fire wire and a zero line of the power supply, a leakage induction coil which is used for detecting leakage current, and an electromagnetic type action assembly by which an output end of the socket is electrified are welded on the control circuit board. Through the electromagnetic type action assembly, a moving contact on the elastic moving-contact metal bridge is electrically connected or disconnected with an output conductor of the power supply and a fixed contact on an output end metal sheet of the power supply, so that the socket has or has no power to output.
Description
Technical field
The utility model relates to a kind of supply socket with creepage protection function, more particularly, relates to a kind of supply socket with electric leakage and arc protection function of electromagnetic type.
Background technology
Along with development of times, people's living standard improves constantly, and household electrical appliance are universal day by day.People are also more and more higher to the requirement safe in utilization of household electrical appliance.People always wish that the supply socket that is installed in the wall has kinds of protect function, safe and reliable when room construction and interior decoration, power supply not only can be provided, and have defencive function.But the socket that is installed in usually in the wall of room is common supply socket, does not have electric leakage and arc protection function.That is, it between supply line or the faults such as arc burning between the short circuit of appliance chamber, leak current fault and the circuit that causes because of the sparking of load power transmission line do not have defencive function.
Though the socket that has has creepage protection function,, defencive function is single, still has the following disadvantages: 1, do not have the arc protection function, do not prevent the function of arc burning.At present, the phenomenon of arcing starting arc burning happens occasionally between the transmission line that causes owing to transmission line is aging, it is reported that many event of fire belong to all that this class arc fault causes.Some often are at full capacity or the electrical equipment of overload, as television set, air-conditioning, lampblack absorber etc., because of operating at full capacity under high temperature, high pressure conditions for a long time, add erosions such as greasy dirt, make the transmission line insulating barrier aging, arcing often takes place, if untimely discovery is also cut off power supply effectively, very easily cause arc burning, breaking out of fire, so the generation of arc fault causes that more and more people pay close attention to.2, when installation personnel when mounted; if mistake with the output of socket behind input access power input line; whole defencive functions that socket should have are with malfunctioning; socket can't carry out power-off protection to the leak current fault that takes place in power supply process; think in the atmosphere that is in a kind of safety utilization of electric power but also can mislead the user, mislead the user and continue to use.When contingency breaks down, be difficult to avoid harm, do not have due protective effect.
Summary of the invention
In order to solve the problem that the existing power supply socket exists; the purpose of this utility model provides a kind of arc fault, earth leakage fault and short trouble that has in the automatic test socket supply line, and can have the supply socket of electric arc and creepage protection function in the electromagnetic type that the internal cutting off power supply of utmost point short time is avoided burning.
Another purpose of the present utility model provides a kind of reverse wiring protection function, electromagnetic type, as to have electric arc and creepage protection function supply socket that has.This socket provides the guiding of unique correct connection electric power incoming line for installation personnel, when the electric power incoming line reversal connection during to the socket output or live wire, when the ground wire phase sequence is put upside down or lack when connecing safe zero line, the utility model all will be forbidden power supply; Have only correct connection to finish, socket resets, and the socket output just has voltage output, thereby the correct wiring of guiding setter prevents false wiring, guarantees that installation is correct and the user is safe in utilization.
Another purpose of the present utility model provides the supply socket that a kind of electromagnetic type with unusual overpressure protection function has electric leakage and arc protection function.Promptly when power input voltage surpassed the 20%-40% of normal voltage, this socket can cut off the power supply output of socket automatically.
For achieving the above object, the utility model by the following technical solutions: a kind of electromagnetic type has the supply socket of electric leakage and arc protection function, and it is mainly combined by loam cake, middle layer bracket and base; A metal ground connection mounting panel is installed between loam cake and middle layer bracket, the control circuit board that can realize socket power output, detect and handle leak current fault and arc fault is installed between middle layer bracket and base;
Cover on described and be provided with power output socket, reset button and leak(age) test button; Be provided with the reset guide post that is with spring in the bottom surface of described reset button;
A pair of power firestreak, zero line output metallic conductor are housed in the both sides of middle layer bracket, on power supply output metallic conductor, also are provided with the fixed contact of a pair of mirror image symmetry; Be respectively equipped with on a pair of power supply output metallic conductor with on the power output socket phase line hole, the corresponding metal blade of null line hole that cover;
Monosymmetric a pair of power supply input wires screw and a pair of power supply output connection screw of being provided with at base is provided with a pair of power output end sheet metal that links to each other with power supply output connection screw in base, be respectively equipped with fixed contact on the power output end sheet metal;
On described control circuit board, be welded with a pair of power firestreak that links to each other with power supply input wires screw, the zero line input conductor, the a pair of elasticity moving contact metal bridge that links to each other with power firestreak, zero line, be used to detect the electric leakage induction coil of leakage current, and make the socket output charged/or uncharged electromagnetic type action component;
The centre bore that one end of described elasticity moving contact metal bridge is bent downwardly 90 °, pass the electric leakage induction coil is welded on the circuit board and links to each other with live wire, the zero line of power input; The other end in elasticity moving contact metal bridge is provided with two pairs of moving contacts, a pair of moving contact be placed on middle layer bracket on power supply output metallic conductor on fixed contact corresponding, another to moving contact be placed on base in the power output end sheet metal on fixed contact corresponding; It is characterized in that:
Described electromagnetic type action component is positioned at the below of reset button, can make elasticity moving contact metal bridge and power supply output metallic conductor, power output end sheet metal electric power be connected/or disconnect, it comprises: support, place guide plate that the support inboard just is made of plastics on the lower side, place the interior end face of support below the guide plate to be pressed with metallic channel
The shape magnetic sheet, place magnetic sheet spring between guide plate side and the magnetic sheet metallic channel, the packaged type plastics main shaft that places both sides in the support under the reset guide post to have to carry arm, cross the plastics main shaft
The shape locking plate, place the locking plate spring between plastics main shaft and the locking plate sidewall;
Under the central authorities of described packaged type plastics main shaft, reset guide post, have a longitudinal hole; At the top of described locking plate, also have a lockhole with plastics spindle through-hole corresponding position;
Described elasticity moving contact metal bridge is positioned at the top that arm is carried in described plastics main shaft both sides, and moves along with moving up and down of plastics main shaft;
Be provided with a solenoid that is built-in with iron core at an end of described support, the two ends of solenoid link to each other with power supply input live wire, zero line on the control circuit board respectively, automatic must electric generating an electromagnetic field;
The described bottom that is embedded in the reset guide post of reset button below is provided with locked groove, and the lower end of described locked groove is a cone, and when the socket input was not switched on, the bottom of reset guide post was positioned at the top of described locking plate, and vertical corresponding with lockhole on the locking plate.
In specific embodiment of the utility model:
Be injected with the shrinkage pool that is used to place described magnetic sheet spring in the side of described guide plate, described magnetic sheet spring places between this guide plate side shrinkage pool and the described magnetic sheet metallic channel;
Below described guide plate, be injected be used for fixing, guide described
The boss of shape magnetic sheet and support guide plate; Described
The shape magnetic sheet just places in the boss below this guide plate.
Be injected with a shrinkage pool that is used for ccontaining described locking plate spring below described packaged type plastics main shaft sidewall, described locking plate spring just is contained between the shrinkage pool and described locking plate sidewall of this packaged type plastics main shaft below.
Described elasticity moving contact metal bridge is " U " font elasticity moving contact metal bridge.
After supply socket input energising, described reset guide post and the lockhole 1/3 lockhole distance that misplaces mutually.
Afterbody riveting at described iron core has one " U " type stiffener, is used to strengthen described solenoid magnetic force.
Be provided with the arc sampling reactor that is used to detect arc fault on described control circuit board, this arc sampling reactor is connected in the power firestreak.
Cover on described and be provided with the arc test button, this button passes metal ground connection installing rack, middle layer bracket and contacts with assembly on the control circuit board; Below described arc test button and leak(age) test button, be provided with rubber-like test sheet metal, below the test sheet metal, be respectively equipped with test lead and test resistance; One end and the power supply output metallic conductor of test sheet metal links to each other, and the other end is unsettled to be positioned at below the button, can link to each other with test lead, test resistance; The control end of the arc fault detection circuit on the test lead that is arranged on arc test button below and the circuit board links to each other; The control end of the leak current fault testing circuit on the test resistance that is arranged on leak(age) test button below and the circuit board links to each other.
For the ease of assembling, the utility model is separated structure in the connection of afterbody edge with described control circuit board; And at the front end of described support, have a round tube hole over against the position of iron core, the front end of described iron core is over against the sidewall of described magnetic sheet.
Because the utility model is the magnetic field that produces by solenoid, make its built-in iron core produce magnetic, attract magnetic sheet, cooperate pushing again to the reset guide post, make the action of electromagnetic type action component, drive elasticity moving contact metal bridge and move up and down, the fixed contact on the two pairs of moving contacts and the power supply output metallic conductor on the moving contact metal bridge, the fixed contact on the power output end sheet metal are contacted, supply socket has power supply to export.In case, electric leakage, short circuit or arc fault appear, control circuit board cuts off the power supply of solenoid automatically, make the iron core loss of excitation, elasticity moving contact metal bridge returns to the origin-location, two pairs of moving contacts on the moving contact metal bridge are exported the fixed contact on the metallic conductor with power supply, the fixed contact on the power output end sheet metal does not contact, the output of supply socket non-transformer.Whole process all is to finish by the magnetic field that solenoid produces, reliable operation, and fail safe is good, and simple for structure reasonable, powerful in function.
Description of drawings
Fig. 1 is the utility model solid, decomposition texture schematic diagram
Fig. 2 is a front view of the present utility model
Fig. 3 removes front view behind the loam cake for the utility model
Fig. 4 is the front view of the utility model control circuit board
Fig. 5-1 looks partial sectional view for Fig. 3 along an A-A left side, the state diagram the during output of socket non-transformer
Fig. 5-2 looks partial sectional view for Fig. 3 along an A-A left side, the state diagram when socket has power supply output
Fig. 5-3 looks partial sectional view for Fig. 3 along the A-A right side, the state diagram the during output of socket non-transformer
Fig. 5-4 looks partial sectional view for Fig. 3 along the A-A right side, the state diagram when socket has power supply output
Fig. 6-1 be Fig. 3 along the B-B partial sectional view, the state diagram in socket non-transformer when output
Fig. 6-2 be Fig. 3 along the B-B partial sectional view, socket has the power supply state diagram in when output
Fig. 7-1 be Fig. 3 along the C-C partial sectional view, the state diagram when electric power output is cut off in socket tripping operation when pressing the arc test button
Fig. 7-2 be Fig. 3 along the C-C partial sectional view, circle reason condition socket has the power supply state diagram in when output
Fig. 7-3 be Fig. 3 along the C-C partial sectional view, the state diagram of socket non-transformer output when pressing the leak(age) test button
Fig. 8 is the operation principle block diagram of the utility model control circuit board
Fig. 9 is the utility model control circuit board physical circuit figure
Embodiment
As shown in Figure 1, the disclosed electromagnetic type of the utility model has electric leakage and the supply socket of arc protection function and mainly is made of housing and the grounded metal mounting panel 1, insulation middle layer bracket 3, the control circuit board 18 that are installed in the housing.Wherein, described housing is combined by loam cake 2 and base 4; Grounded metal mounting panel 1 is arranged between loam cake 2 and the middle layer bracket 3, links to each other with the earth; The middle layer bracket 3 of insulation is arranged between metal mounting panel 1 and the control circuit board 18, is used for ccontaining power firestreak, zero line output metallic conductor 13,14; Control circuit board 18 is arranged between middle layer bracket 3 and the base 4, be welded with the power firestreak, zero line input 25,24, the moving contact metal bridge 50,51 that links to each other with power firestreak, zero line, the electric leakage induction coil 19 that is used to detect leakage current that link to each other with power input line on the control circuit board 18, be used to detect the reactor L of arc fault and make the socket output charged/uncharged electromagnetic type action component.
As shown in Figure 1, 2, the loam cake 2 of composition housing is provided with two power output socket 19-A, 22-A; The reset button 8 (RESET) of a rectangle; Be provided with two axisymmetric arc test button 7-A (AT) and leak(age) test button 7 (TEST) in the top of reset button (RESET) 8; And two status indicator lamp 29-A, 30-A.Reset button 8, arc test button 7-A, leak(age) test button 7 pass grounded metal mounting panel 1, middle layer bracket 3 and the assembly that is embedded on the control circuit board 18 in the base 4 contacts.Below reset button 8, be provided with a reset guide post 35 that is with spring 91.
As shown in Figure 1, the base 4 of formation housing is used to hold middle layer bracket 3 and control circuit board as shown in Figure 4 18; Middle layer bracket 3 is positioned at the top of control circuit board 18, and embeds in the base 4.Be provided with a pair of power supply input wires screw 9 (HOT), 10 (WHITE) and a pair of power supply output connection screw 109 (HOT), 110 (WHIIE) that link to each other with power supply input live wire, zero line at base 4 monosymmetric.The leg of power supply input wires screw 9,10 inserts and detects and control with in the welding hole of circuit board 18, and is welded on (as shown in Figure 4) on the control circuit board.In base 4, be provided with a pair of power output end sheet metal 80,81 that links to each other with power supply output connection screw 109,110, on power output end sheet metal 80,81, be provided with two fixed contacts 52,53.
As shown in Figure 1, metal ground connection mounting panel 1 is arranged between loam cake 2 and the middle layer bracket 3.Four jiaos of metal mounting panel 1 are provided with four through holes that can be convenient to install, and are equipped with broken groove in order to satisfy different installation needs.Also riveted joint has two elastic metallic clips 11,12 on metal ground connection mounting panel 1.In fact elastic metallic clip 11,12 is exactly the safety ground plug contact chip 5,6 of supply socket 19-A, 22-A on the loam cake 2.A side also is provided with ground wire lead-in clamp 13-A (seeing shown in Figure 2) above metal ground connection mounting panel 1, and it is positioned on the side of shell, and its below is provided with a pair of installation jack in addition, and two kinds of ground wire methods of attachment make that ground wire is installed, wiring is more convenient.
As Fig. 1, shown in Figure 3, middle layer bracket 3 is arranged between metal mounting panel 1 and the control circuit board 18, is used for ccontaining power firestreak, zero line output metallic conductor 13,14, and dead earth metal mounting panel 1.As shown in the figure, the socket power output metallic conductor 13,14 of " bow " word shape of a pair of being is housed respectively in the both sides of middle layer bracket 3, be respectively equipped with on the output conductor 13,14 with loam cake 2 on the corresponding metal blade 60,61,62,63 of power output socket 19-A, 22-A phase line hole, null line hole, also be provided with two fixed contacts 15,16 of a pair of mirror image symmetry on the power supply output conductor 13,14.
As Fig. 1, shown in Figure 4, the control circuit board 18 that is arranged between middle layer bracket 3 and the base 4 is core component of the present utility model, whether correct it has the charged function of the power output socket 19-A, the 22-A that make on the socket loam cake 2, the power supply output screw on the base 109,110, and detect, handle leak current fault, arc fault, short trouble and the wiring of socket power input function automatically.
As shown in the figure, be welded with power firestreak, the zero line input conductor 24,25 that links to each other with power supply input wires screw 10,9 on the control circuit board 18.Between power supply input conductor 24,25, be provided with and be used to detect the electric leakage induction coil 19 of leakage current and " U " font elasticity moving contact metal bridge 50,51 that links to each other with power supply input conductor 24,25.Described electric leakage induction coil 19 is a two induction coil, and it answers transformer and high frequency ferrite difference influenza to answer transformer to form by power frequency high silicon sheet iron difference influenza.One end of described " U " font elasticity moving contact metal bridge 50,51 is bent downwardly 90 ° of centre bores that pass two electric leakage induction coils 19 and is welded on the circuit board 18 and links to each other with live wire, the zero line of power input; Be provided with two pairs of moving contacts 22,23 and 55,54 at " U " font elasticity moving contact metal bridge 50,51 other ends.As shown in Figure 3, Figure 4, moving contact 22,23 is corresponding with two fixed contacts 15,16 that the power supply on being placed on middle layer bracket 3 is exported on the metallic conductor 13,14, moving contact 55,54 be placed on base 4 in power output end sheet metal 80,81 on two fixed contacts 52,53 corresponding, constitute two pairs of constructions of switch.The utility model is exactly to realize being connected with the electric power of power input by moving up and down of elasticity moving contact metal bridge 50,51, make power output socket 19-A, 22-A, power supply output connection screw 109,110 charged, be that the utility model not only can provide power supply for load by jack 19-A, the 22-A on the loam cake 2, but also can provide power supply for load by power supply output connection screw 109,110.
Shown in Fig. 1, Fig. 4, Fig. 5-1, on control circuit board 18, also be provided with the electromagnetic type action component that can make " U " font elasticity moving contact metal bridge 50,51 and power supply output metallic conductor 13,14, power output end sheet metal 80,81 electric power be connected/disconnect.
This electromagnetic type action component is positioned at the below of reset button 8, and it comprises: support 42-A, place guide plate 67 that support 42-A inboard just is made of plastics on the lower side, place a end face in guide plate 67 lower projection to be pressed with metallic channel
Shape magnetic sheet 36, place magnetic sheet spring 34 between guide plate 67 side shrinkage pools and magnetic sheet 36 metallic channels, the packaged type plastics main shaft 28 that places both sides in the support 42-A under the reset guide post 35 to have to carry arm, cross plastics main shaft 28
Shape locking plate 30, place the locking plate spring 33 between plastics main shaft 28 below shrinkage pools and the locking plate 30.
Shown in Fig. 1, Fig. 5-1,5-2, be injected with the shrinkage pool 67-A that is used to place magnetic sheet spring 34 in the side of guide plate 67, below guide plate 67, be provided with and be used for fixing, guide
The boss 67-B of shape magnetic sheet 36 and support guide plate 67.
Under the central authorities of packaged type plastics main shaft 28, reset guide post 35, have a longitudinal hole 29; At the top of locking plate 30, also have a lockhole 31 with plastics main shaft 28 center through hole 29 corresponding positions.
Described " U " font elasticity moving contact metal bridge 50,51 is positioned at the top that arm is carried in plastics main shaft 28 both sides, and moves along with moving up and down of plastics main shaft.
Be provided with the solenoid 26 of a built-in iron core 42 at described support 42-A one end, the live wire of the power input on the two ends of solenoid 26 and the control circuit board 18 links to each other with zero line.When the supply socket power input be terminal screw 9,10 charged after, solenoid 26 is with regard to automatic electric generating an electromagnetic field.The front end of iron core 42 be with
The circular flat 43 that 36 liang of vertical planes of shape magnetic sheet parallel.
Shown in Fig. 5-1, Fig. 5-2, plastics main shaft 28 is positioned at the below of reset button 8, is embedded with the reset guide post 35 that an outside is with spring 91 in the bottom surface of described reset button 8, and the bottom of reset guide post 35 is provided with locked groove 37, and the lower end of locked groove 37 is a cone.When socket input 9,10 was not switched on, the bottom of reset guide post 35 was positioned at the top of locking plate 30, and overlapped with lockhole 31 centers on the locking plate 30.Press, discharge reset button 8, reset guide post 35 passes through hole 29, lockhole 31 moves up and down, the electromagnetic type action component is not produced any influence.
After 9,10 energisings of socket power input, solenoid 26 automatic getting, produce magnetic field, the iron core 42 that is built in coil 26 produces magnetic, adhesive magnetic sheet 36, locking plate spring 33 promotes locking plate 30 actions, make the reset guide post 35 and the center of the lockhole 31 1/3 lockhole distance that misplaces mutually, reset guide post 35 still is positioned at the top of locking plate 30.Push reset button 8, locking plate 30 slides and then slips into guiding locked groove 37 along the taper seat of reset guide post 35 lower ends, utilizes the elastic force of locking plate spring 33 to make the guiding locked groove 37 of reset guide post 35 and the lockhole 31 on the locking plate 30 lock mutually; Discharge reset button 8, under the effect of the spring on the reset guide post 35 91, reset button 8 makes progress voluntarily, drive the upwards action of locking plate spring 33 between locking plate 30, plastics main shaft 28, plastics main shaft 28 below shrinkage pools and the locking plate 30, make " U " font elasticity moving contact metal bridge 50,51 that places plastics main shaft 28 both sides to carry the arm top also along with plastics main shaft 28 upwards action together; Two pairs of moving contacts on " U " font elasticity moving contact metal bridge 50,51 respectively be placed on middle layer bracket 3 on power supply output conductor 13,14 on fixed contact 15,16 be placed on base in power output end sheet metal 80,81 on fixed contact 52,53 contact; So far, socket is outwards powered.
For the ease of the electromagnetic type action component is installed, the utility model is designed to separated structure in the connection of afterbody edge with control circuit board 18.In addition, for the ease of the built-in iron core 42 of solenoid 26 is installed, the utility model is with the front end of support 42-A, over against position injection moulding one round tube hole of iron core 42; Afterbody riveting at coil 26, iron core 42 has one " U " type stiffener 20, is used to strengthen the electromagnetic force of coil 26.
In order to make the utility model can detect arc fault in the power supply circuits automatically, shown in Fig. 8,9, on control circuit board 18, be provided with the arc sampling reactor L that is used to detect arc fault.Arc sampling reactor L is connected among power firestreak (phase line) L, and the one end links to each other with power firestreak input 9, and the other end links to each other with " U " font elasticity moving contact metal bridge 50,51.The reactor L that the detection arc fault is used directly is sent to detected arcing fault signal in the control circuit and handles.
Shown in Fig. 7-1-Fig. 7-3, the utility model also is provided with rubber-like test sheet metal 40,41 at arc test button 7-A (AT) and leak(age) test button 7 (TEST) below, is respectively equipped with test lead 40-A and test resistance 41-A below test sheet metal 40,41.One end of test sheet metal 40,41 links to each other with power supply output conductor 13,14, and the other end is unsettled to be positioned at button 7-A, 7 below can link to each other with test lead 40-A, test resistance 41-A.The control end of the arc fault detection circuit on the test lead 40-A that is arranged on arc test button 7-A below and the circuit board links to each other; The control end of the leak current fault testing circuit on the test resistance 41-A that is arranged on leak(age) test button 7 belows and the circuit board links to each other.This structural design one side and be used for realizing mandatory outage, be used on the other hand simulation, produce arc fault and leak current fault, check socket corresponding protection function.
Operation principle of the present utility model is:
When the utility model wiring correct; there are not electric leakage, short circuit, arc fault; the power input 9,10 of earth leakage protective socket again with power firestreak, when zero line links to each other; control circuit makes solenoid 26 electricly and generate an electromagnetic field automatic; iron core 42 in the coil 26 produces magnetic, and adhesive magnetic sheet 36 shown in Fig. 5-2 is under the effect of locking plate spring 33; locking plate 30 moves to the iron core direction, the cone that makes reset guide post 35 bottoms and the lockhole 31 centers 1/3 lockhole distance that misplaces mutually.
When the user did not push reset button 8, shown in Fig. 5-1,6-1, reset guide post 35 was positioned at the top of locking plate 30; Be positioned at the moving contact of carrying on " U " font elasticity moving contact metal bridge 50,51 on the arm plastics main shaft 28 both sides and do not contact with fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, socket does not have power supply output.
When the user needs earth leakage protective socket that power supply output is arranged, shown in Fig. 5-2,5-4,6-2,7-2, push reset button 8, locking plate 30 slides and then slips into guiding locked groove 37 along the taper seat of reset guide post 35 lower ends, utilizes the elastic force of locking plate spring 33 to make the guiding locked groove 37 of reset guide post 35 and the lockhole 31 on the locking plate 30 lock mutually; Reset button 8 is moved behind the extreme position, discharge reset button 8, under the effect of the spring 91 in reset guide post 35 outsides, reset button 8 makes progress voluntarily, drive locking plate 30, plastics main shaft 28, upwards action of locking plate spring 33 between plastics main shaft 28 below shrinkage pools and the locking plate 30, until elasticity moving contact metal bridge 50, two pairs of moving contacts 22 on 51 tops, 23,55,54 respectively with the power supply output conductor 13 that is placed on the middle layer bracket 3, fixed contact 15 on 14,16 and be placed on power output end sheet metal 80 in the base, two fixed contacts 52 on 81,53 contacts, socket is outwards powered.
In the socket use, want to cut off the power supply output of socket as the user, shown in Fig. 5-3,7-1,7-3, only need push leak(age) test button 7 or arc test button 7-A, simulation electric leakage situation or electric arc situation, control circuit cuts off the power supply of solenoid 26 automatically, makes magnetic field disappear iron core 42 losss of excitation.Because iron core 42 does not have magnetic, iron core 42 no longer attracts magnetic sheet 36, under the effect of magnetic sheet spring 34, magnetic sheet 36 returns to the origin-location, promote locking plate 30 actions, the guiding locked groove 37 of reset guide post 35 bottoms is passed from the lockhole 31 at locking plate 30 tops, plastics main shaft 28 sinks, " U " font elasticity moving contact metal bridge 50,51 sets back, its moving contact no longer contacts with fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket does not have power supply output.
If installation personnel is when installing earth leakage protective socket; mistake is used as the socket power output as power input and power supply input live wire; zero line links to each other; or with the live wire of power input; when the zero line phase sequence is connected to the socket power input reversedly or does not have the attachment security ground wire; as Fig. 8; integrated circuit C3:MH05858A in the control circuit shown in 9 can not send initiating signal; the triode no power; coil 26 two ends can be not charged; coil 26 can not produce magnetic field; iron core 42 can not be magnetic yet; not can attract magnetic sheet 36; reset guide post 35 is vertically corresponding with lockhole 31 centers on the locking plate 30; during reset guide post 35 knee-actions, the electromagnetic type action component is not produced any influence.Be placed on two pairs of moving contacts carrying on " U " font elasticity moving contact metal bridge 50,51 on the arm plastics main shaft 28 both sides and can not contact with the fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, promptly socket does not have power supply output.
In use, if arc burning or leaky or short trouble take place, after control circuit detects this phenomenon, shown in Fig. 8,9, the integrated circuit (IC) RV4145 with the electric leakage induction coil links to each other with arc sampling resistance on the control circuit board exports control signal, make the triode no power, solenoid 26 cuts off the power supply, no longer produces magnetic field, and the magnetic of iron core 42 disappears automatically.Because iron core 42 does not have magnetic, iron core 42 no longer attracts magnetic sheet 30, under the effect of magnetic sheet spring 34, magnetic sheet 36 returns to the origin-location, drive locking plate 30 actions, the guiding locked groove 37 of reset guide post 35 is passed from the lockhole 31 at locking plate 30 tops, plastics main shaft 28 sinks, " U " font elasticity moving contact metal bridge 50,51 sets back, two pairs of moving contacts on the moving contact metal bridge 50,51 no longer contact with fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket does not have power supply output.
In use, if the power input sudden power of socket, coil 26 dead electricity on the utility model control circuit board, the magnetic field that coil 26 produces disappears iron core 42 losss of excitation.Because iron core 42 does not have magnetic, iron core 42 no longer attracts magnetic sheet 36, under the effect of magnetic sheet spring 34, magnetic sheet 36 returns to the origin-location, drive locking plate 30 action compresses locking plate springs 33, the guiding locked groove 37 of reset guide post 35 is passed from the lockhole 31 at locking plate 30 tops, " U " font elasticity moving contact metal bridge 50,51 sets back, two pairs of moving contacts on the moving contact metal bridge 50,51 no longer contact with fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket does not have power supply output.
In addition, the utility model control circuit also has unusual overpressure protection function.The automatic test socket power input of the utility model control circuit voltage, when power input voltage surpasses the 20%-40% of normal voltage, control circuit cuts off the voltage at coil 26 two ends automatically in the 25-30 millisecond, make iron core 42 losss of excitation, two pairs of moving contacts that plastics main shaft 28 both sides are carried on " U " font elasticity moving contact metal bridge 50,51 on the arm no longer contact with fixed contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket does not have power supply output.
The utility model reliable operation, powerful in function, simple for structure reasonable, fail safe is good.
Claims (9)
1, a kind of electromagnetic type has the supply socket of electric leakage and arc protection function, and it is mainly combined by loam cake, middle layer bracket and base; A metal ground connection mounting panel is installed between loam cake and middle layer bracket, the control circuit board that can realize socket power output, detect and handle leak current fault and arc fault is installed between middle layer bracket and base;
Cover on described and be provided with power output socket, reset button and leak(age) test button; Be provided with the reset guide post that is with spring in the bottom surface of described reset button;
A pair of power firestreak, zero line output metallic conductor are housed in the both sides of middle layer bracket, on power supply output metallic conductor, also are provided with the fixed contact of a pair of mirror image symmetry; Be respectively equipped with on a pair of power supply output metallic conductor with on the power output socket phase line hole, the corresponding metal blade of null line hole that cover;
Monosymmetric a pair of power supply input wires screw and a pair of power supply output connection screw of being provided with at base is provided with a pair of power output end sheet metal that links to each other with power supply output connection screw in base, be respectively equipped with fixed contact on the power output end sheet metal;
On described control circuit board, be welded with a pair of power firestreak that links to each other with power supply input wires screw, the zero line input conductor, the a pair of elasticity moving contact metal bridge that links to each other with power firestreak, zero line, be used to detect the electric leakage induction coil of leakage current, and make the socket output charged/or uncharged electromagnetic type action component;
The centre bore that one end of described elasticity moving contact metal bridge is bent downwardly 90 °, pass the electric leakage induction coil is welded on the circuit board and links to each other with live wire, the zero line of power input; The other end in elasticity moving contact metal bridge is provided with two pairs of moving contacts, a pair of moving contact be placed on middle layer bracket on power supply output metallic conductor on fixed contact corresponding, another to moving contact be placed on base in the power output end sheet metal on fixed contact corresponding; It is characterized in that:
Described electromagnetic type action component is positioned at the below of reset button, can make elasticity moving contact metal bridge and power supply output metallic conductor, power output end sheet metal electric power be connected/or disconnect, it comprises: support, place guide plate that the support inboard just is made of plastics on the lower side, place the interior end face of support below the guide plate to be pressed with metallic channel
The shape magnetic sheet, place magnetic sheet spring between guide plate side and the magnetic sheet metallic channel, the packaged type plastics main shaft that places both sides in the support under the reset guide post to have to carry arm, cross the plastics main shaft
The shape locking plate, place the locking plate spring between plastics main shaft and the locking plate sidewall;
Under the central authorities of described packaged type plastics main shaft, reset guide post, have a longitudinal hole; At the top of described locking plate, also have a lockhole with plastics spindle through-hole corresponding position;
Described elasticity moving contact metal bridge is positioned at the top that arm is carried in described plastics main shaft both sides, and moves along with moving up and down of plastics main shaft;
Be provided with a solenoid that is built-in with iron core at an end of described support, the two ends of solenoid link to each other with power supply input live wire, zero line on the control circuit board respectively, automatic must electric generating an electromagnetic field;
The described bottom that is embedded in the reset guide post of reset button below is provided with locked groove, and the lower end of described locked groove is a cone, and when the socket input was not switched on, the bottom of reset guide post was positioned at the top of described locking plate, and vertical corresponding with lockhole on the locking plate.
2, electromagnetic type according to claim 1 has the supply socket of electric leakage and arc protection function, it is characterized in that:
Be injected with the shrinkage pool that is used to place described magnetic sheet spring in the side of described guide plate, described magnetic sheet spring places between this guide plate side shrinkage pool and the described magnetic sheet metallic channel;
Below described guide plate, be injected be used for fixing, guide described
The boss of shape magnetic sheet and support guide plate; Described
The shape magnetic sheet just places in the boss below this guide plate.
3, electromagnetic type according to claim 2 has the supply socket of electric leakage and arc protection function; it is characterized in that: be injected with a shrinkage pool that is used for ccontaining described locking plate spring below described packaged type plastics main shaft sidewall, described locking plate spring just is contained between the shrinkage pool and described locking plate sidewall of this packaged type plastics main shaft below.
4, electromagnetic type according to claim 2 has the supply socket of electric leakage and arc protection function, and it is characterized in that: described elasticity moving contact metal bridge is " U " font elasticity moving contact metal bridge.
5, electromagnetic type according to claim 1 has the electric leakage and the supply socket of arc protection function, it is characterized in that: after the energising of supply socket input, and described reset guide post and the lockhole 1/3 lockhole distance that misplaces mutually.
6, have the supply socket of electric leakage and arc protection function according to the described electromagnetic type of one of claim 1-5, it is characterized in that: the afterbody riveting at described iron core has one " U " type stiffener, is used to strengthen described solenoid magnetic force.
7, electromagnetic type according to claim 6 has the supply socket of electric leakage and arc protection function; it is characterized in that: be provided with the arc sampling reactor that is used to detect arc fault on described control circuit board, this arc sampling reactor is connected in the power firestreak.
8, electromagnetic type according to claim 7 has the supply socket of electric leakage and arc protection function, it is characterized in that: cover on described and be provided with the arc test button, this button passes metal ground connection installing rack, middle layer bracket and contacts with assembly on the control circuit board;
Below described arc test button and leak(age) test button, be provided with rubber-like test sheet metal, below the test sheet metal, be respectively equipped with test lead and test resistance; One end and the power supply output metallic conductor of test sheet metal links to each other, and the other end is unsettled to be positioned at below the button, can link to each other with test lead, test resistance; The control end of the arc fault detection circuit on the test lead that is arranged on arc test button below and the circuit board links to each other; The control end of the leak current fault testing circuit on the test resistance that is arranged on leak(age) test button below and the circuit board links to each other.
9, electromagnetic type according to claim 1 has the supply socket of electric leakage and arc protection function, it is characterized in that:
Described control circuit board is separated structure in the connection of afterbody edge;
The front end of described support, have a round tube hole over against the position of iron core, the front end of described iron core is over against the sidewall of described magnetic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001244 CN2807541Y (en) | 2005-01-20 | 2005-01-20 | Electromagnetic type electric socket with electricity leak and electric arc protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001244 CN2807541Y (en) | 2005-01-20 | 2005-01-20 | Electromagnetic type electric socket with electricity leak and electric arc protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807541Y true CN2807541Y (en) | 2006-08-16 |
Family
ID=36921837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001244 Expired - Fee Related CN2807541Y (en) | 2005-01-20 | 2005-01-20 | Electromagnetic type electric socket with electricity leak and electric arc protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807541Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740271A (en) * | 2008-11-15 | 2010-06-16 | 上海益而益电器制造有限公司 | Leakage circuit breaker |
| CN101162814B (en) * | 2006-10-13 | 2011-09-07 | 黄华道 | Creepage protecting socket |
-
2005
- 2005-01-20 CN CN 200520001244 patent/CN2807541Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162814B (en) * | 2006-10-13 | 2011-09-07 | 黄华道 | Creepage protecting socket |
| CN101740271A (en) * | 2008-11-15 | 2010-06-16 | 上海益而益电器制造有限公司 | Leakage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 |