CN2240782Y

CN2240782Y - Structure improved leakage protector for power source

Info

Publication number: CN2240782Y
Application number: CN 95201505
Authority: CN
Inventors: 吴文山
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-27
Filing date: 1995-01-27
Publication date: 1996-11-20
Anticipated expiration: 2005-01-27

Abstract

The utility model relates to a structure improved leakage protector for power source, comprising an upper and a lower cover body, an electricity conducting device, a load device and a control device. The lower cover body is provided with a containing chamber which is used to place the electricity conducting device, the load device and the control device. The upper cover body and the lower cover body cover together, and the cover body is respectively provided with return key holes and test key holes, which is used to contain and lay return keys, test keys, inverse spring pieces and an electricity conducting slice body after combining. A screw combining piece is used to penetrate and lay screw ties, when the load device leaks electricity, the control device is used to sense and measure, which forces the tripping and escaping of a switch and separates from a power source. The utility model has high safety performance and predict the occurring of leakage electricity in advance.

Description

Structurally improved power supply earth leakage protective device

The utility model is about a kind of power supply earth leakage protective device, refers to especially a kind ofly can respond to the electric leakage situation automatically, automatically escape outage and the structurally improved power supply earth leakage protective device of cutting off the electricity supply.

General electrical appliance, all rely on the supply of power supply and move, in the country of intense industrialization, sufficient supply of electric power is arranged, so electrification is very convenient, yet careless slightly, can cause that electric wire cocks off and causes house to ruin the incident that the people dies to happen occasionally, trace it to its cause, be to use method improper, maybe can't provide prevention dangerous and due to can not taking emergency measures in advance, employed electrical appliance in the family at present is not when all having the electric leakage of Auto-Sensing power supply, automatically escape and the device or the equipment of cutting off the electricity supply, thereby when power supply produces leaky, still be in lasting supply status, people's lives and properties are caused very big threat.

The purpose of this utility model provides a kind of can the detecting automatically and escape and the structure improved power supply earth leakage protective device of cutting off the electricity supply voluntarily when electric leakage takes place appliances power source, thereby can avoid the generation of human casualty accident.

The utility model detailed structure is described as follows in conjunction with the embodiments:

Fig. 1 is the utility model integrated member perspective exploded view.

Fig. 2 is a combination schematic appearance of the present utility model.

Fig. 3 is embodiment circuit theory diagrams of the present utility model.

Fig. 4 is the outside drawing () of the utility model in conjunction with external terminal.

Fig. 5 is the outside drawing (two) of the utility model in conjunction with external terminal.

Fig. 6 is the cutaway view of the utility model in conjunction with external terminal.

Fig. 7, Fig. 8, Fig. 9 are the outside drawings of various terminal.

Figure 10, Figure 11 reply button operation situation cutaway view.

The figure number explanation:

1 lower cover, 10 rooms, 11 screw holes, 12 projections, 13 short slots, 14 protruding walls, 15 grafting flat terminals, 16 grafting nose circle, 17 holders, 18 slots, 19 perforation, 1A first silver tipped contact, 2 electric installations, 20 positioning seats, 21 bobbins, 22 coils, 23 collude the frame of pulling, 24 grip blocks, 25 hooking blocks, 26 ear shape sheets, 27 axostylus axostyles, 28 return spring spares, 3 control device, 30 relays, 31 bridge rectifiers, 32 filters, 33 light-emitting diodes, 34 thyristors, 35 integrated circuits, 36 resistance, 37 capacitors, 38 perforation, 4 load devices, 40 comparators, 41 face terminals, 42 conduction lamellar bodies, 43 links, 44 connect salient point, 45 perforation, 46 wear and close the hole, 47 collude the portion of closing, 48 second silver tipped contacts, and 5 upper cover body, 50 reply by keypunch, keypunch is pressed in 51 tests, 52 fixing holes, and 53 short slots, 54 reply buttons, the 55 protruding tips, 56 anti-spring parts, 57 test buttons, 58 plug together bar, 59 conductive copper sheets, 5A screw piece, 6 external sockets.

Consult Fig. 1 and shown in Figure 3, the utility model main member includes:

Lower cover 1, its inside is provided with room 10, and forward and backward end then is respectively equipped with spiral shell Close hole 11 and projection 12, and be provided with short slot 13 in entity circumferential surface front end, simultaneously The bottom is provided with protruding wall 14, and protruding wall 14 solid faces then are provided with jack (not demonstrating among the figure) , room 10 is for being installed with the structures such as electric installation 2, control device 3 and load device 4 Part usefulness, and the set jack of protruding wall 14 solid faces is for grafting flat terminal 15 and the circle of pegging graft Terminal 16 plugs usefulness, and flat terminal 15 tops of pegging graft simultaneously are set with holder 17 Slot 18 stable plugging together are provided with perforation 19, this perforation in addition in holder 17 tops The 19th, wear for the first silver tipped contact 1A, with as current conduction whether foundation;

Electric installation 2 is to collude the frame 23 of pulling by positioning seat 20, bobbin 21, coil 22 and to combine, appropriate location both sides, rear end are provided with and protrude grip block 24 in face of positioning seat 20 entities, this positioning seat 20 is to be installed with in conjunction with behind the coil 22 for bobbin 21, make bobbin 21 just place 24 of grip blocks and do not deviate from, other colludes the frame 23 of pulling and is extended with hooking block 25 outward in entity portion, the top then is provided with ear shape sheet 26, this colludes the frame 23 of pulling is to wear for an axostylus axostyle 27, after axostylus axostyle 27 penetrates a return spring spare 28, integrally combine with coil 22;

Control device 3 is by relay 30, bridge rectifier 31, filter 32, light-emitting diode 33, thyristor 34, integrated circuit 35, resistance R 1-R4, capacitor C 1-C5, bridge rectifier 31 1 inputs link to each other with answer button 54 1 ends through relay 30, its another input is connected with answer button 54 other ends, two electric leakage outputs of comparator 40 connect the 2nd, 3 pin of integrated circuit 35 respectively, in addition, comparator 40 also is connected with face terminals 41 with answer button 54 respectively.Wherein the model of integrated circuit 35 adopts LM2878.

Load device 4 is to be combined in conjunction with face terminals 41, conduction lamellar body 42 and link 43 by comparator 40, comparator 40 is whether the magnitude of voltage of relatively exporting, going into to hold is identical, have or not leaky with sensing, and face terminals 41 entities are held to the greatest extent to be provided with and are connected salient point 44, so that connect with conduction lamellar body 42, be positioned at conduction lamellar body 42 most ends simultaneously and be provided with perforation 45, link 43 entity two ends are provided with to wear and close hole 46 in addition, the stage casing inner face then is provided with the portion of closing 47 of colluding, it is involutory with the set perforation of conduction lamellar body 42 45 wearing and closing hole 46, wears for the second silver medal tie point 48;

Upper cover body 5, inner body surface is provided with draw-in groove (not demonstrating among the figure) in fact, in the entity end face then be respectively equipped with answer by keypunch 50 and the test by keypunch 51, and be provided with fixing hole 52 in front end face, simultaneously be provided with short slot 53 in the entity front bottom end, answer is to wear for replying button 54 by keypunch 50, these answer button 54 bottoms are extended with corresponding protruding slightly 55, be installed with for anti-spring part 56, and test is to be installed with for test button 57 by keypunch 51, is extended with in test button 57 bottoms and plugs together bar 58, can combine with conductive copper sheet 59 and anti-spring part 56, in addition, the above-mentioned lower cover 1 set screw hole 11 of 52 correspondences of fixing hole is tied for screw piece 5A spiral shell.

The combination situations of the utility model integrated member, be earlier the first silver tipped contact 1A to be fixedly arranged in the holder 17 set perforation 19, again grafting flat terminal 15 is inserted in holder 17 set slots 18, be placed through the set jack of protruding wall 14 in the lump together with grafting nose circle 16, after being placed in coil 22 on the bobbin 21 then, be arranged on 24 of positioning seat 20 set grip blocks again, be subjected to the stable holding of grip block 24 and do not drop out, again axostylus axostyle 27 is worn and collude pull frame 23 and return spring spare 28, be combined into a complete electric installation 2 with coil 22 and be located in the lump in the lower cover 1 set room 10, again with face terminals 41, conduction lamellar body 42 and link 43 interconnect, and face terminals 41 front ends are stretched through out from comparator 40, form a complete load device 4, to make up the load device of finishing 4 then is located in the room 10, face terminals 41 is just placed on the lower cover 1 set short slot 13, make simultaneously and collude the frame 23 set hooking blocks 25 of pulling and collude and close in link 43 set colluding in the portion of closing 47, again control device 3 is located in the room 10, make and collude the frame 23 set ear shape sheets 26 of pulling and pass, anti-spring part 56 is placed in replys button 54 set protruding 55 slightly again by set perforation 38 on the integrated circuit 35.The test button 57 in conjunction with conductive copper sheet 59 and anti-spring part 56 after, pass by keypunch 51 by keypunch 50 and test by upper cover body 5 set answers, at last lid 5 is covered lower cover 1, make short slot 53 cover face terminals 41, projection 12 hooks together draw-in groove, and make fixing hole 52 corresponding screw holes 11, wear the spiral shell knot by screw piece 5A, combination situations shown in Figure 2, face terminals 41 is exposed terminal connect another external socket with different shape and specification 6, with convenient external use, as Fig. 4, shown in Figure 5, and the detailed situation of its connection, as shown in Figure 6.In addition the utility model can be according to the different current value in each department, inserting terminal is designed to the shape of bipod or tripod, as shown in Figure 7.

The enforcement situation of the utility model integrated member sees also Fig. 3-shown in Figure 8, and is described in detail as follows:

The utility model is connected with extraneous power supply; make power supply via relay 30; bridge rectifier 31; resistance R 1 arrives light-emitting diode 33; make light-emitting diode 33 obtain power supply and shinny; under the situation of normal power supply; input current and output current in the comparator 40 balance each other; make integral body become conducting state; use for extraneous; when when face terminals 41 produces leaky; when output current and input current are uneven in the comparator 40; comparator 40 signal that is about to leak electricity reaches the 2nd of integrated circuit 35; 3 pin; via integrated circuit 35 signal being amplified the back is exported by the 1st pin; and pass through by the G pin of thyristor 34; make 34 one-tenth conducting states of thyristor; relay 30 obtains enough exciting curents; and the magnetic force of electric installation 2 is discharged; relay 30 produces the formation of escape phenomenon and opens circuit; supply load terminal 41 power supplys no longer; and reach the effect of protection; test button 57 can be pressed simulation electric leakage situation simultaneously; when power supply enters comparator 40 via R4; the electric current of comparator 40 outputs and input produces energy imbalance; comparator 40 is about to signal and passes to integrated circuit 35 at this moment; and make relay 30 obtain enough exciting curents; whether so as to testing circuit normal, also can utilize answer button 54 to make electric power loop recover regular event simultaneously if producing the escape phenomenon.

From the above mentioned, whether the utility model operating circuit of sensing automatically has leaky, and can cut off the electricity supply automatically, in making the electrical appliance process, fail safe in the power supply supply is improved, thereby avoid the human casualty accident that produces because of the power supply electric leakage, it is practical.

Claims

1, a kind of structurally improved power supply earth leakage protective device is characterized in that being made up of upper and lower cover body, electric installation, load device and control device, wherein:

Lower cover entity inner face is provided with the room front periphery and is provided with short slot, inner bottom part then is provided with jack, this jack is respectively for circle, the flat terminal of pegging graft, circle, flat terminal plug together with holder again, and its entity content chamber then supplies ccontaining electric installation, load device and control device, simultaneously, lower cover and upper cover body cover, offer respectively on the upper cover body entity answer by keypunch and test by keypunch, be installed with respectively and reply button and test button, reply button and combine with anti-spring part; The test button combines with conductive copper sheet and anti-spring part, and wears spiral shell knot one by screw piece.

2, structurally improved power supply earth leakage protective device according to claim 1 is characterized in that described electric installation by positioning seat, bobbin, coil and collude the frame of pulling and form, by an axostylus axostyle wear wear in regular turn behind the return spring spare combined integrated.

3; structurally improved power supply earth leakage protective device according to claim 1; it is characterized in that described control device comprises relay 30; bridge rectifier 31; filter 32; light-emitting diode 33; thyristor 34; integrated circuit 35; resistance R 1-R4; capacitor C 1-C5; bridge rectifier 31 1 inputs link to each other with answer button 54 1 ends through relay 30; its another input is connected with answer button 54 other ends; two electric leakage outputs of comparator 40 connect the 2nd of integrated circuit 35 respectively; 3 pin; in addition, comparator 40 also is connected with face terminals 41 with answer button 54 respectively.

4, structurally improved power supply earth leakage protective device according to claim 1 is characterized in that described load device is made up of in conjunction with face terminals, conduction lamellar body and link comparator.