CN2786820Y - Reinforced multi-purpose electromagnetic electric leakage protecting socket - Google Patents

Abstract

The utility model discloses a reinforced multi-purpose electromagnetic type leakage protection socket. The utility model is characterized in that an auxiliary electromagnetic coil with a built-in iron core is additionally installed beside a release on a circuit board in the socket, an unlocking piece is riveted with an end head of the iron core and the other end of the unlocking piece is fixed on a lock catch member. When the original main electromagnetic coil on the circuit board is unable to carry out normal operation due to malfunction, the auxiliary electromagnetic coil cuts off the power output of the socket. Two stop blocking pieces are fixed at the bottom of an elastic power input metal sheet on the circuit board of the utility model, current conducting electrodes are inlaid at the upper edges of the stop blocking pieces, and current-limiting resistors are inlaid in the stop blocking pieces. A display lamp for alarm prompting is also welded on the circuit board. The current conducting electrodes, the current-limiting resistors and the display lamp are connected in series into an alarm display circuit. When the leakage protection socket is disabled, the alarm display circuit works and prompts a user to replace a new socket in time.

Description

Intensified multifunction electromagnetic leakage protection socket

Technical field

The utility model relates to the supply socket that a kind of electromagnetic type has creepage protection function, refers to a kind of electromagnetic leakage protection socket with double magnetic circuit and prompt functions especially.

Background technology

Along with the continuous development of earth leakage protective socket industry, people require also more and more higher to the safety in utilization of this product.Hope when its end-of-life or lost defencive function or during its spare and accessory parts malfunction and failure, can in time remind the user, is changed new product in the earth leakage protective socket use.And, at present, yet there are no a earth leakage protective socket on the market, when its end-of-life or when having lost defencive function, can send the alarm signal.

Whether the electromagnetic leakage protection socket that occurs on the market in addition, is normally controlled socket by the on/off electricity of controlling its internal electromagnetic coil has power supply to export.Have at earth leakage protective socket under the situation of power supply output, in case solenoid breaks down can't operate as normal the time, the user can't cut off the power supply output of the earth leakage protective socket that has broken down.

Summary of the invention

In view of the foregoing, the purpose of this utility model provides a kind of when current leakage jack life termination or its inner spare and accessory parts fault lose protective effect, can send the electromagnetic leakage protection socket of alarm signal.

Another purpose of the present utility model provides a kind of electromagnetic leakage protection socket with double magnetic circuit, when the main electromagnetic coil of electromagnetic leakage protection socket breaks down, can cut off the power supply output of socket by another secondary solenoid.

For achieving the above object, the utility model by the following technical solutions: a kind of intensified multifunction electromagnetic leakage protection socket, it is made of housing, the circuit board that is installed in the socket the realized electric power output in the housing; A pair of elasticity power firestreak, zero line input sheet metal is installed on described circuit board and controls the release whether this elasticity power firestreak, zero line input sheet metal and socket power output conductor contact; This release includes a main electromagnetic coil and a lock buckling part; It is characterized in that:

The one secondary solenoid that is built-in with iron core also is installed on described release next door, separates locking plate in the riveted joint of the termination of this iron core, this other end of separating locking plate is fixed on the described lock buckling part; The coil two ends of described secondary solenoid are in parallel with the coil two ends of described main electromagnetic coil.

Below described elasticity power firestreak, zero line input sheet metal, be fixed with two position-limited blocks on the circuit board, the top edge of position-limited block respectively setting-in conductive electrode, in two position-limited blocks, be embedded with current-limiting resistance; On circuit board, also be welded with a display lamp that is used for alarm;

When this earth leakage protective socket non-transformer output, described elasticity power firestreak, zero line input sheet metal, conductive electrode, current-limiting resistance and display lamp series connection constitute an alarm indication circuit.

Because the utility model adopts above technical scheme, makes the utility model not only have creepage protection function, and, when current leakage jack life termination, disabler, can send the alarm signal, remind the user to note, in time change socket.In addition, during certain spare and accessory parts fault in earth leakage protective socket, particularly when the main electromagnetic coil fault can't operate as normal, the power supply output of socket be can also cut off, user's the person and the safety of electrical equipment guaranteed by secondary solenoid.The utility model powerful in function, fail safe are good, reliable operation.

Description of drawings

Fig. 1 is the three-dimensional decomposition texture schematic diagram of the utility model

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 that each module position concerns schematic diagram on the utility model circuit board

Fig. 5-1 is the A-A partial sectional view of Fig. 3, socket non-transformer output state figure

Fig. 5-2 is the A-A partial sectional view of Fig. 3, and socket has power supply output state figure

Fig. 5-3 is the B-B partial sectional view of Fig. 3, socket non-transformer output state figure

Fig. 5-4 is the B-B partial sectional view of Fig. 3, socket non-transformer output state figure

Fig. 6 is the C-C partial sectional view of Fig. 3, and socket has power supply output state figure

Fig. 7 is the D-D partial sectional view of Fig. 3, socket non-transformer output state figure

Fig. 8 is the utility model control circuit board physical circuit figure

Embodiment

The disclosed intensified multifunction earth leakage protective socket of the utility model is to be improved on the basis of 200420092433.6 patents in the patent No.; increased when earth leakage protective socket inefficacy, end-of-life and can pass through light, auditory tone cues; remind the user in time to change the function of new product; and; when inner spare and accessory parts fault of earth leakage protective socket such as solenoid 26 faults, the user can cut off the function of socket power output by force by secondary solenoid.

As shown in Figure 1, the disclosed earth leakage protective socket of the utility model is mainly formed by housing, the circuit board combination that is installed in the socket power the realized output/disconnection in the housing and can sends the sound and light alarm cue when the current leakage jack life termination.

Described housing is combined by loam cake 2, middle layer bracket 3 and base 4; Between loam cake 2 and middle layer bracket 3, be provided with metal ground connection mounting panel 1; Between middle layer bracket 3 and base 4, circuit board 18 is installed.

As shown in Figure 1 and Figure 2, on loam cake 2, have three phase mains output plughole 5,6, reset button hole 8-A, testing button hole 7-A and status indicator lamp hole 30-A.Be provided with reset button 8 and testing button 7 in reset button hole 8-A and testing button hole 7-A, reset button 8 and testing button 7 pass metal ground connection mounting panel 1 and middle layer bracket 3 and contact with assembly on the circuit board 18.The indicator light LED1 that is embedded with warning usefulness at status indicator lamp hole 30-A (is positioned on the circuit board 18, as shown in Figure 8).

Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 13-A (as shown in Figure 2), lead.On metal ground connection mounting panel 1, be provided with ground connection blade 11,12 with the ground hole corresponding section of loam cake 2 power supply output plugholes 5,6.

As Fig. 1, shown in Figure 3, a power firestreak output conductor 13 and a zero-power line output conductor 14 are installed in the both sides of middle layer bracket 3; At the two ends of power supply output conductor 13,14, be provided with sheet clip leaf wing 60,61,62,63 with live wire hole, the null line hole corresponding section of loam cake power supply output plughole 5,6.End at power supply output conductor 13,14 also is respectively equipped with alloy fixed contact 15,16.

As shown in Figure 1, base 4 is used to hold middle layer bracket 3 and circuit board 18.The bilateral symmetry of base 4 be respectively equipped with a pair of power supply input wires screw 9,10 and a pair of power supply output connection screw 109,110.In base 4, be provided with a pair of power firestreak that links to each other with power supply output connection screw 109,110, zero line output sheet metal 80,81, on power supply output sheet metal 80,81, be provided with a pair of fixed contact 52,53.

Core component of the present utility model is mounted in the circuit board 18 in the housing, and it has the power supply output plughole 5,6 that makes on the socket loam cake 2, power supply output connection screw 109,110 charged or the outage and the automatic functions that detect, handle leak current fault of base 4 both sides; The more important thing is when current leakage jack life termination or inner spare and accessory parts break down, can send the alarm signal and after the main electromagnetic coil fault on the circuit board, can cut off the function of socket power output by force by secondary solenoid.

As Fig. 1, shown in Figure 4, this circuit board 18 is provided with two elasticity power supply input sheet metals 50,51 that are " U " font.One end of elasticity power supply input sheet metal 50,51 is bent downwardly 90 degree, passes differential differentiating transformer 19, links to each other with power firestreak, zero line input wires screw 9,10 by input wires sheet 24,25; The other end of elasticity power supply input sheet metal 50,51 is respectively equipped with moving contact 22,54 and 23,55.Moving contact 22,54,55,23 respectively with power supply output conductor 13,80,81,14 on fixed contact 15,52,53,16 corresponding (as shown in Figure 3), form two groups of four pairs of mains switches.

Also be provided with a differential differentiating transformer 19 that is used to detect leakage current on circuit board 18, as shown in Figure 8, power firestreak, zero line pass differential differentiating transformer 19.

As Fig. 1, Fig. 4, Fig. 5-1, shown in Figure 6, on circuit board 18, also be provided with elasticity power supply input sheet metal 50,51 is connected with power supply output conductor 13,14,80,81 electric power/or the release 28 of disconnection.

This release 28 is positioned at the below of reset button 8, is a rectangular cylinder, and its left and right sides stretches out to form and carries arm, and described elasticity power supply input sheet metal 50,51 is located in the top that arm is carried in release 28 left and right sides, and can move up and down along with release 28.Be provided with a vertical central perforation 29 at the top of release 28, the reset guide post 35 that is with back-moving spring 91 that is embedded in reset button 8 bottom surfaces can move up and down along central perforation 29.Have the locked groove 36 of a circle depression in the bottom of reset guide post 35, near its bottom.In the bottom of release 28, cross release 28 and be provided with one and movably make by metal material

Type lock buckling part 30.End face at lock buckling part 30 also is provided with a perforation 31.Between side of release 28 and lock buckling part 30, be provided with a circular recess 33, be built-in with a spring 34.Be provided with a main electromagnetic coil 26 that is built-in with movable core 42 in the outside of lock buckling part 30 sidewalls.

As Fig. 5-1, shown in Figure 6, between the bottom surface and circuit board 18 of release 28, be provided with an elasticity unlock switch 67,68 of making by elastic metallic material.The positive terminal of the rectification circuit out-put supply of one end 67 of this unlock switch on resistance and circuit board links to each other; Its other end 68 is fixed on the circuit board, and whether charged the control of the controllable silicon SCR 1 by circuit board and control main electromagnetic coil 26 generation magnetic field extremely link to each other.When reset button 8 is pressed, drive reset guide post 35 and move down, make two contacts, 67,68 closures of unlock switch, the control utmost point of controllable silicon SCR 1 gets electric, and controllable silicon SCR 1 conducting has electric current to pass through in the main electromagnetic coil 26, produces magnetic field; When the unlock switch end is opened, the control utmost point no-voltage of controllable silicon SCR 1, controllable silicon SCR 1 not conducting does not have electric current to pass through in the main electromagnetic coil 26, and magnetic field disappears.

In order to realize when current leakage jack life termination or spare and accessory parts fault lose protective effect, can sending the purpose of alarm signal; as Fig. 1, shown in Figure 7; the utility model below elasticity power supply input sheet metal 50,51 moving contacts, be fixed with two position- limited blocks 32,33 on the circuit board 18, the top edge of position- limited block 32,33 respectively setting-in conductive electrode K _J1, K _J2, in position- limited block 32,33, be embedded with current-limiting resistance R _J1, R _J2As shown in Figure 8, conductive electrode K _J1, K _J2An end and resistance R _J1, R _J2Constitute a display circuit, conductive electrode K with the display lamp LED1 series connection that is used for alarm _J1, K _J2The other end and elasticity power supply input sheet metal 50,51 link to each other.

When pressing reset button 8 but because the inner spare and accessory parts of socket break down, socket lost efficacy, when earth leakage protective socket did not have power supply output, electric current was through power firestreak input sheet metal 50, conductive electrode K _J1, R _J1, LED1, R _J2, K _J2, zero-power line input sheet metal 51 flows back to the earth, forms current circuit, and state display lamp LED1 is bright, shows that socket lost efficacy, end-of-life, the earth leakage protective socket of reminding the user in time more to renew.When all normally have power supply output in earth leakage protective socket work; be that moving contact 22,23 on the elasticity power supply input sheet metal 50,51 is when fixed contact 15,16 on the power supply output conductor 13,14 contacts; above-mentioned alarm loop disconnects; LED1 does not work; show that socket is good, can relievedly use.

As Fig. 1, Fig. 5-3, shown in Figure 8, below testing button 7, be provided with a testing elastic sheet metal 40.One end of testing elastic sheet metal 40 is positioned at the below of testing button 7, and the other end links to each other with power firestreak output conductor 13.Below testing elastic sheet metal 40, be provided with a leakage tests resistance 27, an end of leakage tests resistance 27 be positioned at testing elastic sheet metal 40 below, the other end is welded on the circuit board and links to each other with the zero line of power input.When the user need cut off socket power output, can press testing button 7, testing elastic sheet metal 40 is linked to each other with leakage tests resistance 27, the simulation short trouble, produce short circuit current, make the live wire 13 of short circuit current through the socket output, testing elastic sheet metal 40, leakage tests resistance 27 is to the zero line of power input, differential differentiating transformer 19, after chip IC detects this fault, export control signal immediately, make the controllable silicon SCR conducting, have electric current to flow through in the main electromagnetic coil 26, produce magnetic field, make its inner iron core 42 actions, promote lock buckling part 30 and move, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 fall, and make its moving contact and power supply output conductor 13,14,80,81 stationary contact is opened, the output of socket non-transformer.

Working properly at earth leakage protective socket, when its each spare and accessory parts function was intact, when short trouble, leak current fault occurring, the utility model can cut off the power supply output of earth leakage protective socket by said structure.And; when the user wants to cut off socket power output, also can be by pushing testing button 7, by test sheet metal 40, test resistance 27 simulation short troubles; make main electromagnetic coil 26 get electric generation magnetic field, cut off the power supply output of earth leakage protective socket by said structure.

Since the utility model be by the main electromagnetic coil on the control circuit board 26 the action of release 28 is controlled in electric or outage; thereby; control elasticity power supply input sheet metal 50; moving contact on 51 whether with power supply output conductor 13; 14; 80; fixed contact contact on 81; whether the control socket has power supply output; so; in order to prevent because the fault of main electromagnetic coil 26 causes the earth leakage protective socket can't operate as normal; as Fig. 1; shown in Fig. 5-1～Fig. 5-4; the utility model is on circuit board 18; release 28 is other also to be equipped with a secondary solenoid 38 that is built-in with iron core 39; separate locking plate 37 in the riveted joint of the termination of iron core 39, the other end of separating locking plate 37 is fixed on the lock buckling part 30 in its hole of offering.The coil two ends of secondary solenoid 38 are in parallel with the coil two ends of main electromagnetic coil 26.When main electromagnetic coil 26 faults can't operate as normal, can lock buckling part 30 be moved by secondary solenoid 38, thereby, make release 28 actions, be moving contact and the disconnection of the fixed contact on the power supply output conductor 13,14,80,81 on the elasticity power supply input sheet metal 50,51, cut off the power supply output of socket.

The utility model realize earth leakage protective, control earth leakage protective socket power input, output have/or the principle that unregulated power connects be:

Shown in Fig. 5-1, the utility model is intact when working properly, press reset button 8, the reset guide post 35 that is attached thereto is moved down, driving release 28 moves down, make the contact 67 of flexible unlock switch, 68 contacts, main electromagnetic coil 26 is charged, produces magnetic field, attract iron core 42 bump lock buckling parts 30, make it mobile, the central perforation 31 of lock buckling part 30 is passed in the bottom of reset guide post 35, because elasticity unlock switch 67,68 inertia, unlock switch pops up, the two ends 67 of unlock switch, 68 disconnect, and no current passes through in the coil 26, and magnetic field disappears; Spring 34 between lock buckling part 30 and the release 28 back moves lock buckling part 30; the central perforation 31 of lock buckling part 30 is slipped in the gathering sill 36; again because the release of the spring 91 on reset guide post 35 tops; driving release 28 moves up; make elasticity input sheet metal 50; moving contact 22 on 51; 55; 23; 54 with output metallic conductor 13; fixed contact 15 on 14; 16 and power supply output sheet metal 80; fixed contact 52 on 81; 53 contacts are shown in Fig. 5-2; realized the power supply input; the electric power of output connects, and earth leakage protective socket has power supply output.

As shown in Figure 8, when earth leakage protective socket is intact, press reset button 8, it is working properly when power supply output is arranged, and the display lamp LED1 that is used for alarm indication does not work.Push reset button 8 in any case when current leakage jack life termination, inefficacy, when the equal non-transformer of earth leakage protective socket was exported, display lamp LED1 was bright, so, in case display lamp LED1 is bright, illustrate that this earth leakage protective socket has problem, need change.

When needs cut off the output of earth leakage protective socket; shown in Fig. 5-3; only need push testing button 7 downwards; testing button 7 following testing elastic sheet metals 40 are linked to each other with leakage tests resistance 27; the simulation short trouble; produce short circuit current; differential differentiating transformer 19; after chip IC detects this fault; export control signal immediately, make the controllable silicon SCR conducting, have electric current to flow through in the main electromagnetic coil 26; produce magnetic field; make its inner iron core 42 actions, promote lock buckling part 30 and move, reset guide post 35 is jumped out in lock buckling part 30; release 28 falls; elasticity power supply input conductor 50; 51 fall, and make its moving contact and power supply output conductor 13; 14; 80; 81 stationary contact is opened, the output of socket non-transformer.

When main electromagnetic coil 26 faults can't operate as normal, shown in Fig. 1, Fig. 5-4, the utility model can also get by making secondary solenoid 38, the generation magnetic field suction is built in the iron core 39 in the secondary solenoid 38, the locking plate 37 of separating that iron core 39 drives are attached thereto spurs lock buckling parts 30, move it, thereby, reset guide post 35 is jumped out in lock buckling part 30, release 28 falls, elasticity power supply input conductor 50,51 falls, and the stationary contact of its moving contact and power supply output conductor 13,14,80,81 is opened, the output of socket non-transformer.

In addition, the utility model loud speaker of can also in the alarm circuit, connecting.Sound when light shows, realize sound and light alarm, the prompting user notes.

Indulge the above, the utility model not only has creepage protection function, and, when current leakage jack life termination, disabler, can send the alarm signal, remind the user to note in time changing earth leakage protective socket.When the earth leakage protective socket main electromagnetic coil can't operate as normal, the utility model can also pass through secondary solenoid, cut off socket power output.The utility model function is strong, and fail safe is good, and good reliability can be guaranteed the safety of the person and electrical equipment.

Claims (3)

1, a kind of intensified multifunction electromagnetic leakage protection socket, it is made of housing, the circuit board that is installed in the socket the realized electric power output in the housing;

A pair of elasticity power firestreak, zero line input sheet metal is installed on described circuit board and controls the release whether this elasticity power firestreak, zero line input sheet metal and socket power output conductor contact;

This release includes a main electromagnetic coil and a lock buckling part; It is characterized in that:

The one secondary solenoid that is built-in with iron core also is installed on described release next door, separates locking plate in the riveted joint of the termination of this iron core, this other end of separating locking plate is fixed on the described lock buckling part; The coil two ends of described secondary solenoid are in parallel with the coil two ends of described main electromagnetic coil.

2, a kind of intensified multifunction electromagnetic leakage protection socket according to claim 1, it is characterized in that: below described elasticity power firestreak, zero line input sheet metal, be fixed with two position-limited blocks on the circuit board, top edge difference setting-in at position-limited block conductive electrode, is embedded with current-limiting resistance in two position-limited blocks; On circuit board, also be welded with a display lamp that is used for alarm;

When this earth leakage protective socket non-transformer output, described elasticity power firestreak, zero line input sheet metal, conductive electrode, current-limiting resistance and display lamp series connection constitute an alarm indication circuit.

3, a kind of intensified multifunction electromagnetic leakage protection socket according to claim 1 and 2 is characterized in that: have one on the surface of described housing and be used to demonstration lamp hole that described alarm display lamp is spilt.

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