CN2759010Y

CN2759010Y - Electromagnetic socket with electric leak and arc protection functions

Info

Publication number: CN2759010Y
Application number: CN 200420096068
Authority: CN
Inventors: 黄华道
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-29
Filing date: 2004-09-29
Publication date: 2006-02-15
Anticipated expiration: 2014-09-29

Abstract

The utility model discloses an electromagnetic 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

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, more specifically to socket a kind of electromagnetic type, that have electric leakage and arc protection function.

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 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 the harm that user's person, electrical equipment cause is not had 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, 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, do not have reverse wiring protection function, promptly work as 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.

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 that can realize socket power output, detect and handle leak current fault, short trouble 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 a 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, 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; It is characterized in that:

On described control circuit board, be welded with a pair of power firestreak that links to each other with power supply input wires screw, zero line input conductor, a pair of " U " font moving contact metal bridge that links to each other with power supply input live wire, zero 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 is bent downwardly 90 degree, pass the electric leakage induction coil are welded on the circuit board and link to each other with live wire, the zero line of power input; 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 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;

Described electromagnetic type action component is positioned at the below of reset button, can make " U " font moving contact metal bridge and power supply output metallic conductor, power output end sheet metal electric power be connected/or disconnect, it comprises assembly support, place the left and right clamping plate that are made of plastics of the left and right sides in the assembly support, place upper shed irregular " mouth " font that the interior end of left and right clamping plate gathering sill just is provided with the metal indent on the upper side (promptly

Type) magnetic sheet, place groove and the magnetic sheet guide spring between the magnetic sheet formed by left and right sides clamping plate, the packaged type plastics main shaft that places both sides in the magnetic sheet under the reset guide post to have to carry arm, cross locking plate that plastics main shaft and an end be injected with fixed groove, the locking plate guide spring between the metal indent that places locking plate fixed groove and magnetic sheet top;

Under the central authorities of described packaged type plastics main shaft, reset guide post, be provided with a longitudinal hole; At the top of described locking plate, be provided with lockhole with plastics main shaft center through hole corresponding position;

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

Be provided with a solenoid that is built-in with iron core at described assembly support one end, the two ends of coil link to each other with control circuit, automatic electric generating an electromagnetic field; The front end of iron core be provided with one with upper shed irregular " mouth " font (promptly

Type) circular flat that magnetic sheet two vertical planes parallel;

The bottom of described reset guide post is provided with the guiding locked groove, and the lower end of described guiding 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 overlaps with lockhole on the locking plate.

In specific embodiment of the utility model:

Described locking plate be inverted "L" shaped (promptly

Type);

Described lockhole be positioned at inverted "L" shaped (promptly

Type) behind the top of locking plate, socket input energising, the cone of described reset guide column bottom and the described lockhole 1/3 lockhole distance that misplaces mutually.

On the madial wall of described left and right clamping plate, be injected with half groove that is used to place the magnetic sheet guide spring respectively, be placed with the magnetic sheet guide spring at left and right clamping plate and between groove that constitutes after connecing and the magnetic sheet;

Have in the lower end of described left and right clamping plate and to be used for fixing and to guide upper shed irregular " mouth " font (promptly

Type) gathering sill of magnetic sheet.

Described assembly support is 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.

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 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.

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 each assembly on the utility model control circuit board

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 metal ground connection 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; Metal ground connection 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 ground connection 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, 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 input

25,24, 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 L 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 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 embeds in the bases 4, and plays the role of a nucleus for each assembly on the fixing control circuit board 18.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 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 fixed contacts 52; 53; fixed contact 52; 53 with Fig. 4 shown in elasticity " 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 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.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-A (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

metallic conductor

13,14, and fixing each assembly on the control circuit board 18.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 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 moving

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 test 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 elasticity " U " the 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.One end of described elasticity " U " font moving

contact metal bridge

50,51 is bent downwardly centre bores that 90 degree pass two electric leakage induction coils 19 and is welded on the circuit board 18 and links to each other with power supply input live wire, zero line; The other end in elasticity " 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

fixed contacts

15,16 corresponding, moving

contact

55,54 be placed on base 4 in power output

end sheet metal

80,81 on two

fixed contacts

52,53 corresponding.

Shown in Fig. 1, Fig. 4, Fig. 5-1, on control circuit board 18, also be provided with elasticity " 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, and it comprises: assembly support 42-B, place the left and right sides in the assembly support 42-B the left and right clamping plate that are made of

plastics

67,68, place the end in clamping plate bottom, left and right sides gathering sill 67-A, the 68-A just to be provided with metal indent 36-A's on the upper side Type magnetic sheet 36, place groove 34-A and the magnetic sheet guide spring 34 between the magnetic sheet 36 formed by left and right sides clamping plate, the packaged type plastics main shaft 28 that places both sides in the magnetic sheet 36 under the reset guide post 35 to have to carry arm, cross plastics main shaft 28 and an end and be injected with fixed groove 32

Locking plate 30, place the locking plate guide spring 33 between locking plate fixed groove 32 and the magnetic sheet 36 upper metal indent 36-A.

Under the central authorities of packaged type plastics main shaft 28, reset guide post 35, be provided with a longitudinal hole 29; At the top of locking plate 30, be provided with lockhole 31 with plastics main shaft 28 center through hole 29 corresponding positions.

Described elasticity " U " font moving

contact metal bridge

50,51 is positioned at the top that arm is carried in plastics main shaft 28 left and right sides, and along with the activity of plastics main shaft moves up and down.

Be provided with a solenoid 26 that is built-in with iron core 42 at the end of described assembly support 42-B, the two ends of coil 26 link to each other with control circuit, automatic electric generating an electromagnetic field; The front end of iron core 42 be provided with one with

The circular flat that 36 liang of vertical planes of type magnetic sheet parallel.

Shown in Fig. 5-1,5-2, plastics main shaft 28 is positioned at the below of reset button 8, be embedded with the reset guide post 35 that is with spring 91 outside in the bottom surface of described reset button 8, the bottom of reset guide post 35 is provided with guiding locked groove 37, and the lower end of guiding locked groove 37 is a cone.

When socket input 9,10 is not switched on, the bottom of reset guide post 35 is positioned at the top of described locking plate 30, and overlap with lockhole 31 on the locking plate 30, push reset button 8, reset guide post 35 passes through hole 29, lockhole 31 knee-actions, but, the electromagnetic type action component is not produced any influence.After the energising of socket input, the coil 26 of assembly support 42-B one end, produce magnetic field, make the iron core 42 that is built in the coil 26 produce magnetic, adhesive magnetic sheet 36, because the effect of spring 33 drives locking plate 30 actions, the bottom cone of reset guide post 35 still is positioned at the top of locking plate 30 at this moment, but, the bottom cone of reset guide post 35 and the lockhole 31 1/3 lockhole distance that misplaces mutually.At this moment, press reset button 8, the cone of reset guide column bottom contacts with the lockhole limit, locking plate moves along the conical surface, take advantage of a situation and slip into guiding locked groove 37, utilize the elastic force of locking plate guide 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, reset button drives locking plate 30, upwards action of plastics main shaft 28, make and be placed on plastics main shaft about 28 and put forward elasticity " U " font moving contact metal bridge 50 on the arm, 51 also with upwards action of plastics main shaft 28, elasticity " U " font moving contact metal bridge 50, two pairs of moving contacts on 51 respectively be placed on middle layer bracket 3 on the power supply output conductor on fixed contact be placed on base in the power output end sheet metal on fixed contact contact, socket is outwards powered.

Shown in Fig. 1, Fig. 5-1,5-2, on the madial wall of described left and

right clamping plate

67,68, be injected with the half groove 34-A that is used to place the magnetic sheet guide spring respectively, be placed with magnetic sheet guide spring 34 at left and right clamping plate and between groove 34-A that constitutes after connecing and the magnetic sheet 36; Have in the lower end of left and

right clamping plate

67,68 and to be used for fixing and to guide

Gathering sill 67-A, the 68-A of type magnetic sheet 36.

For the ease of assembling electromagnetic type action component and the coil 25 that is built-in with iron core 42, the utility model is designed to removable split combining structure with described assembly support 42-B.Before iron core 42 is installed, earlier assembly support 42-B is taken apart, 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 place of coil 26, 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 L is connected in the power firestreak (phase line), 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, and forms two pairs of constructions of switch open in usual.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, and when not having electric leakage, short circuit, arc fault, be that earth leakage protective socket power input 9,10 is with power firestreak, when zero line links to each other, control circuit must electricly generate an electromagnetic field coil 26 automatically, iron core 42 in the coil 26 produces magnetic, adhesive magnetic sheet 36 moves it shown in Fig. 5-2; Under the effect of locking plate guide spring 33, locking plate 30 also moves forwards, backwards, the cone that makes reset guide post 35 bottoms and the lockhole 31 1/3 lockhole distance that misplaces mutually.

When the user does not push reset button 8, shown in Fig. 5-1,6-1, reset guide post 35 is positioned at the top of locking plate 30, be positioned at the moving contact of carrying on elasticity elasticity " U " the font 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 downwards, the awl limit of guiding locked groove 37 lower ends of reset guide post 35 bottoms of reset button 8 belows is contacted with the edge of lockhole 31, locking plate 30 moves, takes advantage of a situation and slip into guiding locked groove 37 along the conical surface, utilize the elastic force of locking plate guide 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, utilize the recovery elastic force of the spring 91 of reset guide post 35 overcoats, reset button drives locking plate 30, upwards action of plastics main shaft 28, make and be placed on plastics main shaft about 28 and put forward elasticity " U " font moving contact metal bridge 50 on the arm, 51 also with upwards action of plastics main shaft 28, until elasticity " U " font moving contact metal bridge 50, two pairs of moving contacts 22 on 51,23,55,54 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, fixed contact 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. 7-1,7-3,5-3, only need push leak(age) test button 7 or arc test button 7-A, simulation leak current fault or arc fault, control circuit detects the power supply that cuts off coil 26 after the above-mentioned fault 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 locking plate 36, under the effect of magnetic sheet guide spring 34, locking plate 36 returns to the origin-location, drive 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 falls, make and be placed on plastics main shaft 28 both sides and put forward elasticity " U " font moving contact metal bridge 50 on the arm, 51 return to original position, moving contact metal bridge 50, two pairs of moving contacts on 51 no longer with power

supply output conductor

13,14 and power output end sheet metal 80, fixed 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; 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; Fig. 8; whether being used in the control circuit shown in 9 detected phase sequence normal; whether there is unusual superpressure; the integrated circuit (IC) 3:MH05858A of arc fault can not send initiating signal; the not conducting of drive circuit that constitutes by V1-V10; 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 vertical corresponding with lockhole 31 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 elasticity " U " the font 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.

In use, if arc burning or leaky take place, after control circuit detects this phenomenon, shown in Fig. 8,9, leakage current detection, processing integrated circuit IC2:RV4145, integrated circuit (IC) 1:MC331721 with the electric leakage induction coil links to each other with arc sampling resistance on the control circuit board can not export control signal, by the not conducting of drive circuit that V1-V10 constitutes, and coil 26 outages, no longer produce magnetic field, the magnetic of iron core 42 disappears automatically.Because iron core 42 does not have magnetic, iron core 42 no longer attracts magnetic sheet 36, under the effect of magnetic sheet guide spring 34, locking plate 36 returns to the origin-location, drive 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 falls, make and be placed on plastics main shaft 28 both sides and put forward elasticity " U " font moving contact metal bridge 50 on the arm, 51 return to original position, moving contact metal bridge 50, two pairs of moving contacts on 51 no longer with power supply output conductor 13,14 and power output end sheet metal 80, fixed contact contact on 81, 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 locking plate 36, under the effect of magnetic sheet guide spring 34, locking plate 36 returns to the origin-location, drive 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 falls, make and be placed on plastics main shaft 28 both sides and put forward elasticity " U " font moving contact metal bridge 50 on the arm, 51 return to original position, moving contact metal bridge 50, two pairs of moving contacts on 51 no longer with power

supply output conductor

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, the moving contact that plush copper 28 both sides are carried on elasticity " U " the font moving

contact metal bridge

50,51 on the arm does not contact with fixed 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, short trouble and arc fault is installed between middle layer bracket and base;

On described control circuit board, be welded with a pair of power firestreak that links to each other with power supply input wires screw, zero line input conductor, a pair of elasticity moving contact metal bridge that links to each other with power supply input live wire, zero 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 elasticity moving contact metal bridge is bent downwardly 90 degree, pass the electric leakage induction coil are welded on the circuit board and link 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;

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, the connection of power output end sheet metal electric power/or disconnect, it comprises assembly support, place the left side that is made of plastics of the left and right sides in the assembly support, right clamping plate, place a left side, end in the right clamping plate gathering sill just is provided with upper shed irregular " mouth " the font magnetic sheet of metal indent on the upper side, place the groove formed by left and right sides clamping plate and the magnetic sheet guide spring between the magnetic sheet, the interior both sides of magnetic sheet have the packaged type plastics main shaft of carrying arm under placing the reset guide post, cross the locking plate that a plastics main shaft and an end are injected with fixed groove, place locking plate fixed groove and magnetic sheet the top the metal indent between the locking plate guide spring;

Described elasticity moving contact metal bridge is positioned at the top that arm is carried in described plastics main shaft both sides, and along with the activity of plastics main shaft moves up and down;

Be provided with a solenoid that is built-in with iron core at described assembly support one end, 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 the circular flat that irregular with upper shed " mouth " font magnetic sheet two vertical planes parallel;

The described bottom that is embedded in the reset guide post of reset button below is provided with the guiding locked groove, the lower end of described guiding locked groove is a cone, when the socket input was not switched on, the bottom of reset guide post was positioned at the top of described locking plate, and overlapped with lockhole on the locking plate.

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

Described lockhole is positioned at the top of inverted "L" shaped locking plate, after the socket input energising, and the cone of described reset guide column bottom and the described lockhole 1/3 lockhole distance that misplaces mutually.

3, electromagnetic type according to claim 2 has the socket of electric leakage and arc protection function, it is characterized in that:

Be injected with half groove that is used to place described magnetic sheet guide spring on the madial wall of described left and right clamping plate respectively, described magnetic sheet guide spring is placed on described left and right clamping plate and connects between the groove and magnetic sheet of back formation.

4, electromagnetic type according to claim 3 has the socket of electric leakage and arc protection function, it is characterized in that: have the gathering sill that is used for fixing and guides upper shed irregular " mouth " font magnetic sheet in the lower end of described left and right clamping plate.

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

6, electromagnetic type according to claim 5 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.

7, electromagnetic type according to claim 6 has the socket of electric leakage and arc protection function, and 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 electric leakage and the socket of 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.