CN2729955Y - Reinforced multifunction earth leakage protective socket - Google Patents
Reinforced multifunction earth leakage protective socket Download PDFInfo
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- CN2729955Y CN2729955Y CN 200420093371 CN200420093371U CN2729955Y CN 2729955 Y CN2729955 Y CN 2729955Y CN 200420093371 CN200420093371 CN 200420093371 CN 200420093371 U CN200420093371 U CN 200420093371U CN 2729955 Y CN2729955 Y CN 2729955Y
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Abstract
The utility model relates to a reinforced multifunction earth leakage protective socket. The utility model is characterized in that two electric supply switches controlled by the reset button are arranged on the mesosphere bracket of the existing earth leakage protective socket and both sides of the reset button. A reset switch is arranged below the control circuit board, in the socket, and just under the reset button. The two electric supply switches are connected with the reset switch in series in the live conductor and the zero conductor electric supply circuit of the control circuit board electric source of the earth leakage protective socket. When the earth leakage protective socket has no electric source to output, the two electric supply switches and the reset switch cut off the electric supply of the control circuit board, the ageing of the electrical elements on the control circuit board because of being energized for a long time is avoided, the lifetime of the electrical elements is lengthened, and the service lifetime of the earth leakage protective socket is expanded. In addition, the reinforced multifunction earth leakage protective socket adds an electric arc sampling resistor used for checking the fault of the electric arc on the control circuit board, and the reinforced multifunction earth leakage protective socket is made to have the electric arc protective function.
Description
Technical field
The utility model relates to a kind of earth leakage protective socket that is installed in the common metope; especially refer to a kind of intensified multifunction earth leakage protective socket that can detect, handle arc fault, leak current fault automatically; this intensified multifunction earth leakage protective socket is except that having above-mentioned functions; also have automatic cut-out its internal circuit plate power supply, prevent the aging function of electronic component on the circuit board.
Background technology
Earth leakage protective socket of a great variety, a kind of socket that is installed in the common metope that the utility model relates to creepage protection function, as shown in Figure 1, it is mainly combined by loam cake 2, middle layer bracket 3 and base 4; One metal mounting panel 1 is installed between loam cake 2 and middle layer bracket 3, the control circuit board 18 realizing socket power output, detect and handle leakage current is installed between middle layer bracket 3 and base 4.
Loam cake 2 is provided with two power output sockets 5 and 6; The reset button 8 (RESET) of a rectangle, a leak(age) test button 7 (GT); Reset button 8, leak(age) test button 7 pass metal mounting panel 1, middle layer bracket 3 and the assembly that is embedded on the circuit board 18 in the base 4 contacts.
Between loam cake 2 and middle layer bracket 3, be provided with a grounded metal mounting panel 1.Four jiaos of metal mounting panel 1 are provided with four through holes for ease of installing, and are equipped with broken groove in order to satisfy different installation needs.Also two elastic metallic clips 11,12 are equipped with in riveting on metal mounting panel 1.In fact elastic metallic clip 11,12 is exactly the safety ground plug contact chip of supply socket 5,6 on the socket loam cake 2.A side also is provided with a ground wire lead-in clamp above metal mounting panel 1, and it is installed on the side of shell, is convenient to installation, wiring.
As shown in Figure 1 and Figure 2, socket power zero line output metallic conductor 13, the live wire output metallic conductor 14 of " bow " word shape of a pair of being are housed respectively in the both sides of middle layer bracket 3, be respectively equipped with on the power supply output metallic conductor 13,14 with loam cake 2 on the corresponding metal blade 60,61,62,63 of power output socket 5,6 phase line holes, null line hole, also be provided with two fixed contacts 15,16 of a pair of mirror image symmetry on the metallic conductor 13,14.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, link to each other with input power firestreak, zero line by moving contact metal bridge 50,51, power supply sheet metal 20-A, 21-A again, make power output socket 5,6 charged.
Base 4 is used to hold middle layer bracket 3 and the control circuit board 18 that is used to realize the output of earth leakage protective socket power supply, detection and processing leakage current as shown in Figure 3.Monosymmetric 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) of being provided with at base 4.The leg of power supply lead-in clamp inserts in the welding hole of detection and control circuit board 18, and is welded 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. 3 shown in metal bridge 50; electrical contact 55 on 51; 54 is corresponding; by moving contact metal bridge 50; 51 realize and power supply sheet metal 20-A; the 21-A electricity links to each other; make power supply output connection screw 109; 110 is charged; be that the utility model not only can be by the jack 5 on the loam cake 2; 6 for load provides power supply, but also can pass through power supply output connection screw 109; 110 provide the electric energy with leak current fault defencive function for load.
Fig. 3 is the structural representation of each assembly on the control circuit board 18 that is installed in the base 4.As shown in the figure, control circuit board 18 be provided with the power supply sheet metal 20-A, the 21-A that link to each other with zero-power line, live wire input 9,10, be used to detect leakage current two electric leakage induction coils 19, can drive moving contact metal bridge 50,51 upper and lower mobile reset guide assemblies 28.The end of power supply sheet metal 20-A, 21-A passes two electric leakage induction coils 19 and links to each other with power input 9,10, and its other end is provided with a pair of fixed contact 53-A, 52-A.
As shown in Figure 3, be fixed with two moving contact metal bridge 50,51 at the two ends that reset guide assembly 28 is carried arm.Three electrical contacts of arranging triangular in shape are equipped with in riveting on each moving contact metal bridge 50,51, triangular in shapely arrange, the corresponding contact of fixed contact 53-A, 52-A on a pair of electrical contact 54-A, the 55-A at drift angle place and power supply sheet metal 20-A, the 21-A, in addition two groups of electrical contacts 22,23,55,54 respectively with power supply output metallic conductor 13,14 on two fixed contacts 15,16 and 52, the 53 corresponding contacts of the electrical contact on the power output end sheet metal 80,81, control the supply socket 5,6 on the loam cake 2 and the power supply of power output end 109,110.
As shown in Figure 3, Figure 4, reset guide assembly 28 is positioned at the below of reset button 8 (RESET), is a cuboid, and its two ends are carried and are fixed with moving contact metal bridge 50,51 on the arm, and its top is provided with central perforation 29; Be inserted with the columniform guiding lock 35 that is with spring 91 in the hole, guiding lock 35 is embedded in the inside of reset button 8.The bottom of guiding lock 35 is the plane, is provided with the lock slots 36 of a depression near the bottom.Below guiding lock 35, horizontal perforation 29 also is provided with a horizontal bolt electromagnetism locking plate 30 of movably being made by metal material; Horizontal bolt electromagnetism locking plate 30 end face central authorities, be provided with perforation 31 with guiding lock 35 corresponding sections; Between side of reset guide assembly 28 and horizontal bolt electromagnetism locking plate 30, be provided with a circular recess 33, a built-in spring 34.When socket does not have power supply output, hole 31 on the horizontal bolt electromagnetism locking plate 30 misplaces with guiding lock 35, guiding lock 35 is positioned at the top of horizontal bolt electromagnetism locking plate 30, the moving contact metal bridge 50,51 and power supply input sheet metal 20-A, the 21-A that are fixed on reset guide assembly 28 two ends are discontiguous, and socket does not have power supply output.When horizontal bolt electromagnetism locking plate 30 is opened, be that horizontal bolt electromagnetism locking plate 30 is set at iron cores 42 in the coil 26 on reset guide assembly 28 next doors when promoting to move forward, hole 31 on the locking plate 30 is with after guiding lock 35 overlaps, reset button 8, it is 35 downward that two guiding are locked, pass locking plate 30, after unclamping reset button 8, the spring 91 that is enclosed within on the guiding lock 35 moves up guiding lock 35, driving reset guide assembly 28 moves up, thereby drive the moving contact metal bridge 50 that is fixed on reset guide assembly 28 two ends, 51 move up, make moving contact metal bridge 50, moving contact on 51 and power supply input sheet metal 20-A, fixed contact on the 21-A and power supply output sheet metal 80, fixed contact contact on 81, make the socket 5 on the socket loam cake 2,6 and output 109,110 is charged, and power supply output is arranged.The action of horizontal bolt electromagnetism locking plate 30 is to be promoted by the electromagnet coil on the circuit board 18 26, the iron core 42 that is installed in the electromagnet coil.
Through practice, its internal structure design of the earth leakage protective socket of said structure has been tending towards perfect.But in actual use, people find that still there is following drawback in it:
1, because the electric elements on the control circuit board are in electriferous state for a long time, easily wears out, reduced the reliability of earth leakage protective socket.
In case earth leakage protective socket installs; its power input just with wall in power firestreak, zero line link together; in fact; though the electric elements on the control circuit board not work, earth leakage protective socket do not have power supply output; but; electric elements on its internal control circuit plate still link to each other with power firestreak, are in electriferous state.Electric elements are in electriferous state for a long time, and are easily aging, add under the megathermal climate condition, if the heating of some electric elements blazes up, just very easily cause the burning of entire circuit plate, make whole earth leakage protective socket not have due reliable protection effect.
2, do not have arc protection, prevent the function of arc burning.
Because the phenomenon that the arcing starting arc burns between the transmission line often takes place, it is reported that many event of fire all belong to this class arc fault and cause at present.Some often are at full capacity or the electrical equipment of overload, as television set, air-conditioning, refrigerator, lampblack absorber etc., add erosions such as greasy dirt again at high-temperature high-pressure state because of operating at full capacity for a long time, and its insulating barrier is worn out, and 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 more and more causes people's attention.And aforesaid earth leakage protective socket does not have the arc protection function, and this also is that aforementioned earth leakage protective socket needs improved place.
3, do not have safe Presentation Function.
When installation personnel when mounted; if mistake is worked as input with the output of socket and is linked to each other with power firestreak, zero line; socket just can't carry out power-off protection to the leak current fault that takes place in power supply process; think in the state that is in a kind of safety utilization of electric power but also can mislead the user, mislead the user and continue to use.In case taking place, leak current fault do not have due protective effect at all.
4, earth leakage protective socket does not have unusual overpressure protection function.
Summary of the invention
In view of the foregoing; the purpose of this utility model provides a kind of intensified multifunction earth leakage protective socket; this earth leakage protective socket is not when having power supply output; can cut off the power supply of its internal circuit plate automatically; prevent that the electric elements on the circuit board are aging, avoid because of aging other faults that cause of the electric elements on the circuit board.
Another purpose of the present utility model provides a kind of creepage protection function that not only has; the intensified multifunction earth leakage protective socket that also has the arc protection function; this enhancement mode earth leakage protective socket is arc fault, the earth leakage fault in the test socket supply line automatically, and can avoid burning in the internal cutting off power supply of utmost point short time.
Another purpose of the present utility model provides a kind of intensified multifunction earth leakage protective socket with wiring correctness Presentation Function.When earth leakage protective socket wiring error, the red display lamp is bright, prompting installation personnel/user's wiring error, thus the correct wiring of guiding setter prevents wiring error, guarantees to install correctly, the user is safe in utilization.
To achieve these goals, the utility model adopts following design: a kind of intensified multifunction earth leakage protective socket, and it is mainly combined by loam cake, middle layer bracket and base; A grounded metal mounting panel is installed between loam cake and middle layer bracket, the control circuit board realizing socket power output, detect and handle leakage current is installed between middle layer bracket and base; Cover on described and be provided with power output socket, 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; 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, the power output end sheet metal is provided with two electrical contacts; Described control circuit board is provided with the power supply sheet metal that links to each other with zero-power line, live wire input, is used to detect two electric leakage induction coils of leakage current, can drives the upper and lower mobile reset guide assembly of moving contact metal bridge; One end of power supply sheet metal passes two electric leakage induction coils and links to each other with power input, and its other end is provided with a pair of fixed contact; About described reset guide assembly, carry and be respectively arranged with a moving contact metal bridge on the arm, three electrical contacts of arranging triangular in shape are equipped with in riveting on each moving contact metal bridge, triangular in shapely arrange, the corresponding contact of fixed contact on a pair of electrical contact at drift angle place and the power supply sheet metal, in addition two groups of electrical contacts respectively with power supply output metallic conductor on two fixed contacts and the corresponding contact of electrical contact on the power output end sheet metal, it is characterized in that:
On described middle layer bracket, the both sides of reset button are provided with two power switchs; On control circuit board, with the power switch corresponding section be provided with two plastic columns; Below control circuit board, in the base, reset button under be provided with a reset switch; In described plastic column, be provided with lead;
One end of described two power switchs links to each other with power input live wire, zero line by the lead in the plastic column respectively, and the other end of two power switchs links to each other with live wire, zero line input on the control circuit board by the interior lead of plastic column respectively;
Described reset switch is connected in described control circuit board power firestreak, the zero line power supply circuits.
The both sides of described reset button respectively are provided with a projection that is used to push described power switch.
On described control circuit board, be provided with the arc sampling resistance that is used for detecting the current supply circuit arc fault, this arc sampling resistance string is associated in the power firestreak power supply circuits on the control circuit board, the one end links to each other with power firestreak input sheet metal, and the other end links to each other with the power firestreak input.
Cover design on described red alarm display lamp and green safety display lamp are arranged;
Described red alarm display lamp is in parallel with the socket output; Described green safety display lamp is in parallel with the socket input.
Describedly be arranged on two rivetings carrying arm top about guidance set and the moving contact metal bridge of three moving contacts of arranging triangular in shape be housed for falling " U " type moving contact metal bridge; Falling at each " " " U " font centre of type moving contact metal bridge respectively is provided with the shelf that plastics are made to U;
The bottom of plastics shelf is enclosed within down " U " in rectangular mouthful of the type moving contact metal bridge central authorities, respectively be with spring on the cylinder on plastics shelf top, direct reach below the socket loam cake by the top of plastics shelf.
In each side design one cofferdam of the assembly support of fixing described guidance set, described plastics bottom shelf is fixed in this cofferdam.
Below described reset guide assembly, the removable horizontal bolt electromagnetism locking plate that crosses the reset guide component holes is half square shape;
These horizontal bolt electromagnetism locking plate end face central authorities, be provided with perforation with the reset guide assembly phase-locked corresponding position of leading; Be provided with a circular recess between sidewall of horizontal bolt electromagnetism locking plate and reset guide assembly, a built-in spring links to each other with a built-in iron core in coil at another sidewall of horizontal bolt electromagnetism locking plate.
Cover on this is described and also be provided with an arc test button, this arc test button passes described grounded metal mounting panel; Below this arc test button, be provided with rubber-like test sheet metal, below the test sheet metal, be provided with test resistance; One end of test sheet metal links to each other with the socket phase line, and the other end is unsettled, also can link to each other with an end of test resistance; The control end of the arc fault detection circuit on the other end of test resistance and the circuit board links to each other.
Because having set up three, the utility model is used for control circuit board whether charged power switch and reset switch; making the utility model is that the user is not when using this socket there not being power supply output; can cut off the power supply of circuit board; make the electric component on the circuit board not charged; thereby, avoid the long-time energising of electric component aging, the life-span of having improved electric component; improved the useful life of earth leakage protective socket, also avoided because the generation of the faults such as fire that the electric elements burning causes.In addition,, can detect the arc fault in the power supply circuits automatically, and cut off the power supply output of earth leakage protective socket because the utility model is provided with arc fault detection resistance, so, the utlity model has the arc protection function.Again because the utility model is provided with alarm display lamp, and when installation personnel wiring error, this alarm display lamp is bright, so whether correct the utility model can be installation personnel and user provides this earth leakage protective socket wiring information, uses safer, relieved.
Description of drawings
Fig. 1 is the three-dimensional decomposition texture schematic diagram of existing earth leakage protective socket
Fig. 2 is for having the front view after earth leakage protective socket is removed loam cake now
Fig. 3 is the location diagram of each assembly on the existing earth leakage protective socket control circuit board
Fig. 4 looks partial sectional view among Fig. 2 along an A-A left side
Fig. 5 is a three-dimensional decomposition texture schematic diagram of the present utility model
Fig. 6 removes front view behind the loam cake for the utility model
Fig. 7 is the location diagram of each assembly on the utility model control circuit board
Fig. 8 is the utility model power switch, reset switch and power firestreak, zero line electrical connection figure
Fig. 9 is the utility model control circuit board physical circuit figure
Figure 10 is along the C-C partial sectional view among the utility model Fig. 6
Figure 11 looks partial sectional view among the utility model Fig. 6 along an A-A left side
Figure 12 is along the B-B partial sectional view among the utility model Fig. 6
Embodiment
In order to make the utility model under the situation that does not have power supply output, can cut off the power supply of its internal control circuit plate automatically, prevent that the electric elements on the circuit board are long charged aging, as Fig. 5, Fig. 6, shown in Figure 7, the utility model on middle layer bracket 3, the both sides of reset button 8 are provided with two power switchs 37,38; On control circuit board 18, with power switch 37,38 corresponding sections be provided with two plastic columns 67,68; Below control circuit board 18, in the base 4, reset button 8 under be provided with a reset switch 36-A.
As shown in Figure 8, power switch 37,38 and reset switch 36-A are connected in power firestreak, the zero line power supply circuits, one end 37-B of power switch 37 links to each other with power firestreak input 9 by the lead 67-B in the plastic column 67, the other end 37-A of power switch 37 links to each other with live wire on the control circuit board by the lead 67-A in the plastic column 67, for control circuit board 18 provides power firestreak.Simultaneously, an end 38-B of power switch 38 links to each other with zero-power line input 10 by the lead 68-B in the plastic column 68, and the other end 38-A of power switch 38 links to each other with zero line on the control circuit board by the interior lead 68-A of plastic column 68.Reset switch 36-A is connected in control circuit board 18 electric power loops, and the end 39-A of reset switch 36-A links to each other with the live wire on the control circuit board, and other end 39-B links to each other with zero line on the control circuit board.From above-mentioned power switch 37; 38 and the circuit connecting relation of reset switch 36-A as can be known; when when earth leakage protective socket does not have power supply output, not pressing reset button 8; power switch 37; 38; reset switch 36-A is not closed; be off-state; not charged on the control circuit board; have only reset button 8 to be pressed; reset button 8 makes the power switch 37 of its both sides; 38 and all closed situation of the reset switch 36-A of its below under; control circuit board 18 is just charged; thereby it is easily aging fundamentally to have solved the electrical equipment vigour part on the control circuit board; life-span is short; the problem that control circuit board is easily burnt.
When pushing reset button 8 downwards, can make reset button 8 drive power switch 37,38 closures of its both sides, as Fig. 1, shown in Figure 12, the utility model respectively is provided with a projection that is used to push power switch 37,38 in the both sides of reset button 8.
In order to prevent to take place because of the phenomenon of arcing starting arc burning between the transmission line, the utility model is provided with the arc sampling resistance L that is used for detecting the current supply circuit arc fault on control circuit board 18.As shown in Figure 9, arc sampling resistance L is connected in the power firestreak power supply circuits on the control circuit board, and the one end links to each other with power firestreak input sheet metal 21-A, and the other end links to each other with power firestreak input 9.The resistance that the detection arc fault is used directly is sent to control circuit with detected arcing fault signal and handles, in case arc fault takes place, control circuit board cuts off the power supply output of socket immediately, avoids arc burning.
The output of socket is worked as input link to each other in order to prevent the installation personnel mistake with power firestreak, zero line, misleading the user thinks and is in a kind of safe using with electricity condition, as shown in Figure 1, the utility model designs on loam cake 2 red alarm display lamp 29-A and green safety display lamp 30-A.
Red alarm display lamp 29-A directly links to each other with the socket output, links to each other with power firestreak, zero line in case installation personnel is used as the earth leakage protective socket output input mistakenly, and 29-A is bright for the red alarm display lamp.So, not push the user under the situation of reset button 8,29-A is bright for the red alarm display lamp, and installation personnel wiring error is described.Because reset button 8 is not pressed, the power switch 37,38 of rest button both sides and the reset switch 36-A below the reset button all are off-state, do not have electricity on the control circuit board, so, the equal non-transformer output of the whole outputs of whole earth leakage protective socket.
Green safety display lamp 30-A directly links to each other with the socket input, and when installation personnel correctly was connected to power firestreak, zero line on the power input of earth leakage protective socket, 30-A was bright for the green safety display lamp.So as long as green safety display lamp 30-A is bright, the user just can relieved, use audaciously.
The utlity model has unusual overpressure protection function in order to make, the utility model will be arranged on reset guide assembly below, be designed to by the interior shell fragment of reset switch of reset button promotion: (can set according to client's needs and adjust error range) when power input voltage surpasses the 20%-40% of normal voltage, can be within 25ms-30ms tripping automatically, cut off the power supply on the control circuit board, the output of earth leakage protective socket non-transformer makes household electrical appliance avoid being subjected to the harm of unusual overvoltage operation; Simultaneously, also make the power protection socket self avoid suffering the harm of unusual overvoltage, make the socket operation safer, make the more relieved safety utilization of electric power of user.
In order to make the utility model be in reliable, safe operating state all the time, as shown in Figure 1, the utility model design has arc test button 7-A (AT).As shown in figure 10, the utility model is provided with rubber-like test sheet metal 40 in the below of arc test button 7-A (AT), be provided with test resistance 40-A below test sheet metal 40.One end of test sheet metal 40 links to each other with the socket phase line (live line), and the other end is unsettled, also can link to each other with the end of resistance 40-A, and the other end of test resistance 40-A is welded on the circuit board.The control end of the arc fault detection circuit on the resistance that is arranged on arc test button 7-A below and the circuit board links to each other.This structural design is used for cutting off by force earth leakage protective socket power supply output on the one hand, be used on the other hand simulation, produce arc fault, check socket corresponding protection function.
In addition, as shown in figure 11, the utility model is arranged on below the guiding lock 35, the removable horizontal bolt electromagnetism locking plates 30 of horizontal perforation 29 are half square shape "
", it is made by metal material.Horizontal bolt electromagnetism locking plate 30 end face central authorities, be provided with perforation 31 with guiding lock 35 corresponding sections; Be provided with a circular recess 33 between sidewall of horizontal bolt electromagnetism locking plate 30 and reset guide assembly 28, a built-in spring 34 links to each other at another sidewall of horizontal bolt electromagnetism locking plate 30 and coil 26 built-in iron cores 42.The effect that horizontal bolt electromagnetism locking plate 30 is subjected to iron core 42 is left and right moves.
For make be arranged on guidance set about 28 carry two rivetings of arm top be equipped with three triangular in shape arrange fall " U " type moving contact metal bridge 50,51 together rapidly, upper and lower straight line moves reposefully, shown in Fig. 5,7,12, the utility model respectively is provided with the shelf 76 that plastics are made falling the centre of " U " type moving contact metal bridge 50,51 " U " font.As shown in figure 12, bottom 76-A, the 76-B of plastics shelf 76 is inserted in down in the rectangular mouth of " U " type moving contact metal bridge 51,50 central authorities, respectively be with spring 91-A, 91-B on cylinder 91-C, the 91-D on plastics shelf 76 tops, the top of plastics shelf 76 is directed reach below the loam cake 2.In addition, as shown in Figure 5, the utility model is also in each side design one cofferdam 27 of the assembly support of fixed guide assembly 28, plastics shelf 76 is fixed in the cofferdam 27, steadily moves up and down along this cofferdam 27 so that guidance set about 28 is put forward " U " type moving contact metal bridge 50,51 of falling of arm top.
Because having set up three, the utility model is used for control circuit board whether charged power switch and reset switch; making the utility model is that the user is not when using this socket there not being power supply output; can cut off the power supply of circuit board; make the electric component on the circuit board not charged; thereby, avoid the long-time energising of electric component aging, the life-span of having improved electric component; improved the useful life of earth leakage protective socket, also avoided because the generation of the faults such as fire that the electric elements burning causes.In addition,, can detect the arc fault in the power supply circuits automatically, and cut off the power supply output of earth leakage protective socket because the utility model is provided with arc fault detection resistance, so, the utlity model has the arc protection function.Again because the utility model is provided with alarm display lamp, and when installation personnel wiring error, this alarm display lamp is bright, so whether correct the utility model can be installation personnel and user provides this earth leakage protective socket wiring information, uses safer, relieved.
Claims (8)
1, a kind of intensified multifunction earth leakage protective socket, it is mainly combined by loam cake, middle layer bracket and base; A grounded metal mounting panel is installed between loam cake and middle layer bracket, the control circuit board realizing socket power output, detect and handle leakage current is installed between middle layer bracket and base;
Cover on described and be provided with power output socket, 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;
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, the power output end sheet metal is provided with two electrical contacts;
Described control circuit board is provided with the power supply sheet metal that links to each other with zero-power line, live wire input, is used to detect two electric leakage induction coils of leakage current, can drives the upper and lower mobile reset guide assembly of moving contact metal bridge; One end of power supply sheet metal passes two electric leakage induction coils and links to each other with power input, and its other end is provided with a pair of fixed contact;
About described reset guide assembly, carry and be respectively arranged with a moving contact metal bridge on the arm, three electrical contacts of arranging triangular in shape are equipped with in riveting on each moving contact metal bridge, triangular in shapely arrange, the corresponding contact of fixed contact on a pair of electrical contact at drift angle place and the power supply sheet metal, in addition two groups of electrical contacts respectively with power supply output metallic conductor on two fixed contacts and the corresponding contact of electrical contact on the power output end sheet metal, it is characterized in that:
On described middle layer bracket, the both sides of reset button are provided with two power switchs; On control circuit board, with the power switch corresponding section be provided with two plastic columns; Below control circuit board, in the base, reset button under be provided with a reset switch; In described plastic column, be provided with lead;
One end of described two power switchs links to each other with power input live wire, zero line by the lead in the plastic column respectively, and the other end of two power switchs links to each other with live wire, zero line input on the control circuit board by the interior lead of plastic column respectively;
Described reset switch is connected in described control circuit board power firestreak, the zero line power supply circuits.
2, a kind of intensified multifunction earth leakage protective socket according to claim 1 is characterized in that: the both sides of described reset button respectively are provided with a projection that is used to push described power switch.
3, a kind of intensified multifunction earth leakage protective socket according to claim 2 is characterized in that:
On described control circuit board, be provided with the arc sampling resistance that is used for detecting the current supply circuit arc fault, this arc sampling resistance string is associated in the power firestreak power supply circuits on the control circuit board, the one end links to each other with power firestreak input sheet metal, and the other end links to each other with the power firestreak input.
4, a kind of intensified multifunction earth leakage protective socket according to claim 3 is characterized in that:
Cover design on described red alarm display lamp and green safety display lamp are arranged;
Described red alarm display lamp is in parallel with the socket output; Described green safety display lamp is in parallel with the socket input.
5, a kind of intensified multifunction earth leakage protective socket according to claim 4 is characterized in that:
Describedly be arranged on two rivetings carrying arm top about guidance set and the moving contact metal bridge of three moving contacts of arranging triangular in shape be housed for falling " U " type moving contact metal bridge; Falling at each " " " U " font centre of type moving contact metal bridge respectively is provided with the shelf that plastics are made to U;
The bottom of plastics shelf is enclosed within down " U " in rectangular mouthful of the type moving contact metal bridge central authorities, respectively be with spring on the cylinder on plastics shelf top, direct reach below the socket loam cake by the top of plastics shelf.
6, a kind of intensified multifunction earth leakage protective socket according to claim 5 is characterized in that: in each side design one cofferdam of the assembly support of fixing described guidance set, described plastics bottom shelf is fixed in this cofferdam.
7, a kind of intensified multifunction earth leakage protective socket according to claim 6 is characterized in that:
Below described reset guide assembly, the removable horizontal bolt electromagnetism locking plate that crosses the reset guide component holes is half square shape;
These horizontal bolt electromagnetism locking plate end face central authorities, be provided with perforation with the reset guide assembly phase-locked corresponding position of leading; Be provided with a circular recess between sidewall of horizontal bolt electromagnetism locking plate and reset guide assembly, a built-in spring links to each other with a built-in iron core in coil at another sidewall of horizontal bolt electromagnetism locking plate.
8, according to claim 5 or 6 or 7 described a kind of intensified multifunction earth leakage protective sockets, it is characterized in that:
Cover on this is described and also be provided with an arc test button, this arc test button passes described grounded metal mounting panel; Below this arc test button, be provided with rubber-like test sheet metal, below the test sheet metal, be provided with test resistance; One end of test sheet metal links to each other with the socket phase line, and the other end is unsettled, also can link to each other with an end of test resistance; The control end of the arc fault detection circuit on the other end of test resistance and the circuit board links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093371 CN2729955Y (en) | 2004-09-07 | 2004-09-07 | Reinforced multifunction earth leakage protective socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093371 CN2729955Y (en) | 2004-09-07 | 2004-09-07 | Reinforced multifunction earth leakage protective socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2729955Y true CN2729955Y (en) | 2005-09-28 |
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ID=35048728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093371 Expired - Fee Related CN2729955Y (en) | 2004-09-07 | 2004-09-07 | Reinforced multifunction earth leakage protective socket |
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| Country | Link |
|---|---|
| CN (1) | CN2729955Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269814A (en) * | 2014-09-19 | 2015-01-07 | 浙江天正电气股份有限公司 | AFDD fault arc protector |
| CN110112621A (en) * | 2019-06-11 | 2019-08-09 | 宁波习羽智能科技有限公司 | Power distribution unit |
-
2004
- 2004-09-07 CN CN 200420093371 patent/CN2729955Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269814A (en) * | 2014-09-19 | 2015-01-07 | 浙江天正电气股份有限公司 | AFDD fault arc protector |
| CN104269814B (en) * | 2014-09-19 | 2017-09-12 | 浙江天正电气股份有限公司 | AFDD fault electric arc protectors |
| CN110112621A (en) * | 2019-06-11 | 2019-08-09 | 宁波习羽智能科技有限公司 | Power distribution unit |
| CN110112621B (en) * | 2019-06-11 | 2024-01-30 | 浙江习羽智能科技有限公司 | Power distribution unit |
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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: 20050928 |