CN2729896Y

CN2729896Y - Electromagnetic socker with earth leakage and arc protection function

Info

Publication number: CN2729896Y
Application number: CN 200420092433
Authority: CN
Inventors: 黄华道
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-16
Filing date: 2004-09-16
Publication date: 2005-09-28
Anticipated expiration: 2014-09-16

Abstract

The utility model discloses an electromagnetic socket with leakage and electric arc protection functions. The utility model is mainly formed by the combination of an upper cover, a middle layer bracket and a base, wherein a metallic earth installation panel is installed between the upper cover and the middle layer bracket, and a control circuit board which has the functions of realizing the power output and the detection of the socket and dealing with leakage and electric arc failure is installed between the middle layer bracket and the base. The utility model is characterized in that a power supply fire wire, the input end of a zero wire, a character U-shaped movable contact metal bridge, a leakage induction coil and an electromagnetic motion component are welded on the control circuit board; the power fire wire and the input end of the zero wire are connected with an input wire of the power supply, the character U-shaped movable contact metal bridge is connected with the power supply fire wire and the zero wire, the leakage induction coil is used for detecting leakage current, and the electromagnetic motion component electrifies the output terminals of the socket. The utility model adopts the structure the electromagnetic motion component enables the moveable contacts on the character U-shaped movable contact metal bridge to be electrically connected with or be separated from electrical contacts on an output conductor of the power supply and on a metal sheet of the output terminal of the power supply, and thus, the socket is caused to output the power or not.

Description

Electromagnetic type has the socket of electric leakage and arc protection function

Technical field

The utility model relates to a kind of socket with creepage protection function, refers to socket a kind of electromagnetic type, that have electric leakage and arc protection function especially.

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 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 the common power socket, does not have electric leakage and arc protection function.That is, it between supply line or the arc burning between the circuit that causes because of load wire sparking of appliance chamber and the threat that user's person is caused because of the household electrical appliance electric leakage do not have protective effect.

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, because the phenomenon of arcing starting arc burning happens occasionally between the transmission line, it is reported that many event of fire all belong to this class arc fault and cause.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 at high temperature, high pressure conditions for a long time, add erosions such as greasy dirt again, make its 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 that misleading the user in the atmosphere that is in a kind of safety utilization of electric power continues to use but also can mislead the user; 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 existing socket exists, the purpose of this utility model provides socket a kind of electromagnetic type, that have electric leakage and arc protection function.This socket has arc fault, the earth leakage fault in the automatic test socket supply line, and can have the 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 provide a kind of have reverse wiring protection function, electromagnetic type, have the supply socket of electric arc and creepage protection function.Promptly 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, thus the correct wiring of guiding setter, prevent wiring error, guarantee that installation is correct, the user is safe in utilization.

Another purpose of the present utility model provides the 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 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 realizing socket power output, detect and handle leak current fault and arc fault is installed between middle layer bracket and base; It is characterized in that:

Cover on described and be provided with power output socket, reset button and leak(age) test 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 electrical contact of a pair of mirror image symmetry;

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 electrical contact on the power output end sheet metal;

On described control circuit board, be welded with the power firestreak, zero line input, " U " font moving contact metal bridge that links to each other with power firestreak, zero line that link to each other with power input line, be used to detect the electric leakage induction coil of leakage current and make the charged electromagnetic type action component of socket output;

The centre bores that one end of described " U " font moving contact metal bridge passes two electric leakage induction coils are welded on the circuit board and link to each other with power firestreak, zero line; The other end in " U " font moving contact metal bridge is provided with two pairs of moving contacts, a pair of moving contact be placed on middle layer bracket on the power supply output conductor on electrical contact corresponding, another to moving contact be placed on base in the power output end sheet metal on electrical contact corresponding;

Described electromagnetic type action component is positioned at reset button, the below of leak(age) test button, can make " U " font moving contact metal bridge and power supply output conductor, the connection of power output end sheet metal electric power/or disconnect, it comprises assembly support, be contained in the left and right sides frame plate that is made of plastics in the assembly support, be arranged on the moving plush copper of activity that frame plate middle plastics in the left and right sides are made, be suppressed with the soft iron sheet of a slice activity at the head of moving plush copper, be fixed on moving plush copper both sides and be fixed with needle roller, be arranged on the electromagnetism locking plate of moving plush copper below, the plastics guiding lock with groove that is with spring that is arranged between moving plush copper and the electromagnetism locking plate is opened, the top guide of electromagnetism locking plate lock open below be provided with a perforation, sidewall and soft iron sheet corresponding position at the electromagnetism locking plate also are provided with a perforation, be equipped with a spring in electromagnetism locking plate inside;

Described " U " font moving contact metal bridge is positioned at the top that arm is carried in moving plush copper both sides, and along with the activity of moving plush copper moves up and down;

Be provided with a coil that is built-in with iron core on the next door of described electromagnetic type action component, the two ends of coil link to each other with control circuit, automatic electric generating an electromagnetic field; The front end of iron core is provided with boss, and the internal diameter of the perforation on the internal diameter of boss and the electromagnetism locking plate sidewall is consistent;

Be with the reset guide post in the bottom surface of described reset button, the reset guide post is with spring outward, conflicts on moving plush copper in its top; The moving plush copper of described activity fastens on the frame plate of the left and right sides by the needle roller of its both sides, and, serve as that axle is movable with this needle roller.

Described electromagnetism locking plate is

Type;

Described guiding lock is opened and is positioned at Type electromagnetism locking plate top, normal condition, the guiding lock is opened the perforation dislocation with electromagnetism locking plate top;

The described soft iron sheet that is compressed on moving plush copper head is formed by the electrical pure iron punching out, and it is arranged on The interior of type electromagnetism locking plate.

On the madial wall of described left and right sides frame plate, have and be used for fixing the support that spring is used.

Described assembly support is designed to removable split combining structure.

Afterbody anchor at described iron core has one " U " type to strengthen magnetic board.

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 (phase line), and the one end links to each other with the power firestreak input, and the other end links to each other with " U " font moving contact metal bridge;

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 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 of test sheet metal links to each other with the power supply output conductor, 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.

The utility model reliable operation, powerful in function, simple for structure reasonable, fail safe is good.

Description of drawings

Fig. 1 is solid of the present utility model, 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 component

Fig. 5-1 is for looking partial sectional view, the state diagram during output of socket non-transformer among Fig. 3 along an A-A left side

Fig. 5-2 is for looking partial sectional view, state diagram when socket has power supply output among Fig. 3 along an A-A left side

Fig. 5-3 is for looking partial sectional view, the state diagram during output of socket non-transformer among Fig. 3 along the A-A right side

Fig. 5-4 is for looking partial sectional view, state diagram when socket has power supply output among Fig. 3 along the A-A right side

Fig. 6-1 be among Fig. 3 along the B-B partial sectional view, when output state diagram of socket non-transformer

Fig. 6-2 be among Fig. 3 along the B-B partial sectional view, socket has power supply when output state diagram

Fig. 7-1 be among 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 among Fig. 3 along the C-C partial sectional view, the normal condition socket has the power supply state diagram in when output

Fig. 7-3 be among 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 multifunctional power 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 made up of loam cake 2 and base 4 and is formed; 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 conductor

13,14; Control circuit board 18 is arranged between middle layer bracket 3 and the base 4, is 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, is used to detect the reactor L1 of arc fault and makes the charged electromagnetic type action component of socket output.

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 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, as shown in Figure 2.

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.The monosymmetric a pair of power supply input wires screw 9 (HOT) that links to each other with power input line, 10 (WHITE) and a pair of power supply output connection screw 109 (HOT), 110 (WHIIE) of being provided with at base 4.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 and power supply output connection screw 109; the 110 power output end sheet metals 80 that link to each other; 81; 80; 81 are provided with two electrical contacts 52; 53; electrical contact 52; 53 with Fig. 4 shown in " U " font moving contact metal bridge 50; moving contact 55 on 51; 54 is corresponding; by moving contact metal bridge 50; 51 realizations are electrically connected with power input; make power supply output connection screw 109; 110 is charged; be that the utility model not only can be by the jack 19-A on the loam cake 2; 22-A provides power supply for load, but also can pass through power supply output connection screw 109; 110 have arc fault for load provides; the electric energy of leak current fault defencive function.

As shown in Figure 1, metal 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.On metal mounting panel 1, go back anchor two elastic

metallic clips

11,12 are housed.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 a ground wire lead-in clamp 13 (seeing shown in Figure 2) above metal mounting panel 1, and it is installed on the side of shell, is convenient to installation, wiring.

As Fig. 1, shown in Figure 3, middle layer bracket 3 is arranged between metal mounting panel 1 and the control control circuit board 18, is used for ccontaining power firestreak, zero line output conductor 13,14.As shown in the figure, the socket

power output 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

electrical contacts

15,16 of a pair of mirror image symmetry on the power supply output conductor 13,14.As shown in Figure 4, these two

fixed contacts

15,16 be fixed on control circuit board 18 on moving

contact metal bridge

50,51 on

electrical contact

22,23 corresponding, constitute two pairs of constructions of switch, realize and being electrically connected of power input by moving

contact metal bridge

50,51, make power output socket 19-A, 22-A charged.

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, the wiring of socket power input function automatically.

As shown in the figure, be welded with power firestreak, the zero line input conductor 25,24 that links to each other with power supply

input wires screw

9,10 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 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.The centre bores that one end of described " U " font moving

contact metal bridge

50,51 passes two electric leakage induction coils 19 are welded on the circuit board 18 and link to each other with power firestreak, zero line; The other end in " U " font moving

contact metal bridge

50,51 is provided with two pairs of moving

contacts

22,23 and 55,54.Moving

contact

22,23 be placed on middle layer bracket 3 on power

supply output conductor

13,14 on two

electrical contacts

15,16 corresponding, moving

contact

55,54 be placed on base 4 in power output

end sheet metal

80,81 on two

electrical contacts

52,53 corresponding.

Shown in Fig. 1, Fig. 4, Fig. 5-1, on control circuit board 18, also be provided with " U " font moving

contact metal bridge

50,51 is connected with power

supply output conductor

13,14, power output

end sheet metal

80,81 electric power/or the electromagnetic type action component that disconnects.This electromagnetic type action component is positioned at the below of reset button 8, arc test button 7-A and leak(age) test button 7, it comprises assembly support 42-B, be contained in the left and right sides frame plate that is made of

plastics

67,68 in the assembly support 42-B, be arranged on both sides that the plastics in the middle of the left and right

sides frame plate

67,68 make have the moving plush copper 28 of the activity of carrying arm, the head of moving plush copper 28 be suppressed with a slice activity soft iron sheet 28-B, be fixed on moving plush copper 28 both sides needle roller 39, be arranged on below the moving plush copper 28

Type electromagnetism locking plate 30, be arranged on moving plush copper 28 and the plastics guiding lock that is with spring 33 between the electromagnetism locking plate 30 with groove open 37, the top guide lock of electromagnetism locking plate 30 open 37 below be provided with a perforation 31, also be provided with in the sidewall of electromagnetism locking plate 30 and soft iron sheet 28-B corresponding position and one bore a hole 32, be equipped with a spring 34 in electromagnetism locking plate 30 inside.For the

spring

33,34 that has made the dropout effect is provided with in the left and right

sides frame plate

67,68, on the madial wall of left and right

sides frame plate

67,68, have support 33-A, the 34-A that is used for fixing

spring

33,34.

Above-mentioned soft iron sheet 28-B is formed by the electrical pure iron punching out, and it is arranged on

The inside of type electromagnetism locking plate 30, electromagnetism locking plate 30 sidewalls 32 places of boring a hole.

Shown in Fig. 1, Fig. 5-1, Fig. 5-2, moving plush copper 28 is positioned at the below of reset button 8, is subjected to the control of reset button 8 actions.As shown in the figure, be with reset guide post 35 in the bottom surface of reset button 8, the reset guide post 35 outer springs 91 that are with, conflict on moving plush copper 28 in its top 36.Movable moving plush copper 28 fastens on left and right

sides frame plate

67,68 by the needle roller 39 of its both sides, and moving plush copper 28 serves as that axle is movable with needle roller 39.

" U " font moving

contact metal bridge

50,51 that links to each other with power input is positioned at moving plush copper 28 both sides and carries the arm top, and along with the activity of moving plush copper 28 moves up and down.The guiding lock that is with spring 33 is opened 37 controls that are subjected to reset button 8, moving plush copper 28, when socket does not have power supply output, guiding lock is opened 37 and is misplaced with the perforation 31 at electromagnetism locking plate 30 tops, guiding lock is opened 37 tops that are positioned at electromagnetism locking plate 30, and moving contact on " U " font moving contact metal bridge and the electrical contact on the power

supply output conductor

13,14, the electrical contact on the power output

end sheet metal

80,81 are discontiguous; When socket has power supply output, shown in Fig. 5-2, when with moving

contact metal bridge

50,51 that power input links to each other on

electrical contact

22,23,55,54 and power

supply output conductor

13,14 on

electrical contact

15,16,

electrical contact

52,53 on the power output

end sheet metal

80,81 when contacting, guiding lock is opened 37 and is overlapped with the perforation 31 at electromagnetism locking plate 30 tops, leads to lock and opens 37 and be slipped in the perforation 31 of electromagnetism locking plate 30.

Shown in Fig. 1, Fig. 5-1, be provided with a coil 26 that is built-in with electrical pure iron iron core 42 on the next door of assembly support 42-B, the two ends of coil 26 link to each other with control circuit shown in Fig. 8,9, automatic electric generating an electromagnetic field.The front end of iron core 42 is provided with boss 42-C, and the internal diameter of the perforation 32 on the internal diameter of boss 42-C and electromagnetism locking plate 30 sidewalls is consistent.After coil 26 energising produced magnetic fields, the iron core 42 that is built in coil 26 inside produced magnetic attraction electromagnetism locking plate 30 and soft iron sheet 28-B, and electromagnetism locking plate 30 is moved, and the perforation 31 that makes electromagnetism locking plate 30 tops and guiding are locked and opened 37 and overlap or misplace.After the perforation 31 at electromagnetism locking plate 30 tops and guiding lock were opened 37 when overlapping, pressed reset button 8, reset button 8 made plush copper 28 actions, and moving plush copper 28 is oppressed again to lead to lock and opened in the perforation 31 of 37 downward landing electromagnetism locking plates 30.

Be provided with boss 42-C owing to be built in an end of the iron core 42 in the coil 26, so the utility model is designed to removable split combining structure with assembly support 42-B.Before iron core 42 was installed, 42-B took apart with assembly support, treat that iron core 42 installs after, again assembly support 42-B is combined.In addition, there is one " U " type to strengthen magnetic board 20 at the afterbody 42-A of iron core 42 anchor.

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 L1 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 moving contact metal bridge 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, be provided with rubber-like

test sheet metal

40,41 at arc test button 7-A (AT) and leak(age) test button 7 (TEST) below, below

test sheet metal

40,41, be respectively equipped with test lead 40-A and test resistance 41-A.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 belows, 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 is used for realizing mandatory outage on the one hand, 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; be that earth leakage protective

socket power input

9,10 is with power firestreak, when zero line links to each other; control circuit shown in Fig. 8,9 makes coil 26 get electric generating an electromagnetic field; iron core 42 in the coil 26 produces magnetic; shown in Fig. 5-2, attract electromagnetism locking plate 30; move it, the perforation 31 that makes electromagnetism locking plate 30 tops is opened 37 with the guiding lock and is overlapped.

When the user does not push reset button 8, shown in Fig. 5-1,6-1, guiding lock is opened 37 tops that are positioned at electromagnetism locking plate 30, be positioned at the electrical contact of carrying on " U " font moving

contact metal bridge

50,51 on the arm moving plush copper 28 both sides and do not contact with electrical contact on power

supply output conductor

13,14 and the power output

end sheet metal

80,81, socket does not have power supply to export.

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 downwards; reset button 8 is downwards by pressing plush copper 28; plush copper 28 is rotated along needle roller 39; its both sides are carried arm and are upturned, and make to be placed on the moving contact of carrying on " U " font moving contact metal bridge 50,51 on the arm moving plush copper 28 both sides and to contact with electrical contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket has power supply to export.Because guiding lock is opened 37 and overlapped with the perforation 31 at electromagnetism locking plate 30 tops, guiding is locked and is opened 37 and passed by pushing of plush copper 28 to bore a hole 31; Simultaneously, because iron core 42 is magnetic, the 28-B of moving plush copper 28 heads is held, so, after discharging reset button 8, the state of moving plush copper 28 remains unchanged, and is placed on the moving contact of carrying on " U " font moving contact metal bridge 50,51 on the arm moving plush copper 28 both sides and still contacts with electrical contact on power supply output conductor 13,14 and the power output end sheet metal 80,81, and socket has power supply to export.

When the user wants to cut off the power supply output of socket, shown in Fig. 5-3,7-1,7-3, only need push leak(age) test button 7 or arc test button 7-A, simulation leak current fault or arc fault, control circuit cuts off the power supply of coil 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 electromagnetism locking plate 30 and soft iron sheet 28-B, under the effect of spring 34, electromagnetism locking plate 30 returns to the origin-location, return in the process of origin-location at electromagnetism locking plate 30, the guiding lock opens 37 under the effect of spring 33, from the perforation 31 at electromagnetism locking plate 30 tops, pass, promoting moving plush copper 28 rotates, making plush copper 28 both sides carry arm no longer is upturned, make and be placed on moving plush copper 28 both sides and put forward " U " font moving contact metal bridge 50 on the arm, moving contact on 51 no longer with power

supply output conductor

13,14 and power output end sheet metal 80, electrical contact contact on 81, 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; 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 electromagnetism locking plate 30; passing of electromagnetism locking plate 30 tops 31 can not held 37 with guiding lock all the time and overlap; guiding lock open 37 be positioned at all the time electromagnetism locking plate 30 above; push reset button 8 in any case; moving plush copper 28 both sides are carried arm and also can be upturned; be placed on moving plush copper 28 both sides and put forward " U " font moving contact metal bridge 50 on the arm; moving contact on 51 all the time not with power supply output conductor 13; 14 and power output end sheet metal 80; electrical contact contact on 81, socket does not have power supply output all the time.

In use,, after control circuit detects this phenomenon, cut off the power supply of coil 26 automatically if arc burning or leaky take place, the magnetic field diminishes that coil 26 is produced, the magnetic of iron core 42 disappears.Because iron core 42 does not have magnetic, iron core 42 no longer attracts electromagnetism locking plate 30 and soft iron sheet 28-B, under the effect of spring 34, electromagnetism locking plate 30 returns to the origin-location, return in the process of origin-location at electromagnetism locking plate 30, the guiding lock opens 37 under the effect of spring 33, from the perforation 31 at electromagnetism locking plate 30 tops, pass, promoting moving plush copper 28 rotates, making plush copper 28 both sides carry arm no longer is upturned, make and be placed on moving plush copper 28 both sides and put forward " U " font moving contact metal bridge 50 on the arm, electrical contact on 51 no longer with power

supply output conductor

In addition, the utility model control circuit also detects power input voltage automatically, 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, the electrical contact that plush copper 28 both sides are carried on " U " font moving

contact metal bridge

50,51 on the arm does not contact with electrical contact on power

supply output conductor

13,14 and the power output

end sheet metal

80,81, cuts off the power supply output of socket.

Claims

1, a kind of electromagnetic type has the 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; It is characterized in that:

The centre bore that one end of described " U " font moving contact metal bridge passes the electric leakage induction coil is welded on the circuit board and links to each other with power firestreak, zero line; The other end in " U " font moving contact metal bridge is provided with two pairs of moving contacts, a pair of moving contact be placed on middle layer bracket on the power supply output conductor on electrical contact corresponding, another to moving contact be placed on base in the power output end sheet metal on electrical contact corresponding;

Described electromagnetic type action component is positioned at reset button, the below of leak(age) test button, can make " U " font moving contact metal bridge and power supply output conductor, the connection of power output end sheet metal electric power/or disconnect, it comprises assembly support, be contained in the left and right sides frame plate that is made of plastics in the assembly support, be arranged on the both sides that the plastics in the middle of the left and right sides frame plate make and have the moving plush copper of the activity of carrying arm, be suppressed with the soft iron sheet of a slice activity at the head of moving plush copper, be fixed with needle roller in moving plush copper both sides, be arranged on the type electromagnetism locking plate of moving plush copper below, the plastics guiding lock with groove that is with spring that is arranged between moving plush copper and the electromagnetism locking plate is opened, be provided with a perforation at the top of electromagnetism locking plate, sidewall and soft iron sheet corresponding position at the electromagnetism locking plate also are provided with a perforation, be equipped with a spring in electromagnetism locking plate inside;

2, electromagnetic type according to claim 1 has the electric leakage and the socket of arc protection function, it is characterized in that: described electromagnetism locking plate for " " type;

Described guiding lock open and be positioned at " " type electromagnetism locking plate top, normal condition, the guiding lock is opened the perforation dislocation with electromagnetism locking plate top;

The described soft iron sheet that is compressed on movable moving plush copper head is formed by the electrical pure iron punching out, it be arranged on " " interior, perforation place of electromagnetism locking plate sidewall of type electromagnetism locking plate.

3, electromagnetic type according to claim 2 has the electric leakage and the socket of arc protection function, it is characterized in that: have on the madial wall of described left and right sides frame plate and be used for fixing the support that spring is used.

4, electromagnetic type according to claim 3 has the socket of electric leakage and arc protection function, and it is characterized in that: described assembly support is removable split combining structure.

5, electromagnetic type according to claim 4 has the socket of electric leakage and arc protection function, it is characterized in that: the afterbody anchor at described iron core has one " U " type to strengthen magnetic board.

6, the socket that has electric leakage and arc protection function according to the described electromagnetic type of claim 1～5, it is characterized in that: on described control circuit board, be provided with the arc sampling reactor that is used to detect arc fault, this arc sampling reactor is connected in the power firestreak, the one end links to each other with the power firestreak input, and the other end links to each other with " U " font moving contact metal bridge;

Below arc test button and leak(age) test button, be provided with rubber-like test sheet metal, be respectively equipped with test lead and test resistance below the test sheet metal: an end of test sheet metal links to each other with the power supply output conductor, and the other end is unsettled to be positioned at the button below, can link to each other with test lead, test resistance: the control end that is arranged on the arc fault detection circuit on test lead and the circuit board below the arc test button links to each other: the control end that is arranged on the leak current fault testing circuit on test resistance and the circuit board below the leak(age) test button links to each other.