CN2829138Y - Earth leakage protective socket with alarm prompting function - Google Patents

Abstract

The utility model discloses a leakage protection socket with the function of alarm prompting. The utility model is characterized in that a circuit board can send out audible and visual alarm prompting signal when the leakage protection socket is at the end of the service life. When the leakage protection socket is disabled, the leakage protection socket can be manually tripped so as to cut of power output. 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 resistor and the display lamp are connected in series into a display circuit. The utility model is also provided with a manually mechanical tripping connecting rod between a testing button and a testing metal sheet, wherein the top surface of the mechanical tripping connecting rod is abutted on the lower side of the testing button, and the lower end of a side arm of the connecting rod is inserted into a hole which is especially arranged for the connecting rod on an L-shaped lock catch component which then can be driven to move right and left by the connecting rod.

Description

Earth leakage protective socket with prompt functions

Technical field

The utility model relates to a kind of earth leakage protective socket, refers to a kind of new type electric leakageproof socket that can send the alarm signal when current leakage jack life termination, when losing efficacy 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 its spare and accessory parts fault when malfunctioning, can in time be reminded the user in the earth leakage protective socket use, change new product.And, at present, yet there are no when current leakage jack life termination on the market or when having lost defencive function, can send the earth leakage protective socket of alarm signal.

Summary of the invention

In view of the foregoing, the purpose of this utility model provides a kind of new type electric leakageproof socket that can send the alarm signal when current leakage jack life termination or spare and accessory parts fault lose protective effect.

For achieving the above object, the utility model by the following technical solutions: a kind of earth leakage protective socket with prompt functions, it is made up of housing, the circuit board that is installed in the socket the realized electric power output in the housing; This housing is combined by loam cake and base, has reset button hole, testing button hole at last cap surface, is provided with reset button and testing button in reset button hole and testing button hole; Be provided with a testing elastic sheet metal below testing button, an end of testing elastic sheet metal is positioned at the below of testing button, and the other end links to each other with the power firestreak output conductor; It is characterized in that:

Below the elasticity power supply on circuit board 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; Described conductive electrode, current-limiting resistance and display lamp series connection constitute a display circuit.

Between described testing button and test sheet metal, also be provided with a hand-machine tool trip link; This machinery trip link is a plastic rod member, it is shaped as dextrorotation turnback " L " type, outwards tiltedly outstanding back, the middle part of the side arm that it extends downwards continues to extend downwards, its end face be resisted against testing button below, between testing button and test sheet metal, insert on " L " type lock buckling part of described dextrorotation turnback in its hole of offering its side arm lower end.

Have one on the surface of described housing and be used to demonstration lamp hole that described alarm display lamp is spilt.

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 addition, during certain spare and accessory parts fault in earth leakage protective socket, can also pass through the armstrong's patent trip link, make the earth leakage protective socket tripping operation by force, the output of cutting off the electricity supply.The utility model in use can be protected the safety of the person and electrical equipment more reliably.

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-A is A-A ' partial sectional view of Fig. 3

Fig. 5-B is B-B ' partial sectional view of Fig. 3

C-C ' partial sectional view of Fig. 3 when Fig. 6 has electric power output for the utility model

C-C ' partial sectional view of Fig. 3 when Fig. 7 exports for the utility model unregulated power

Fig. 8 is the utility model circuit theory diagrams

Embodiment

The disclosed earth leakage protective socket with prompt functions of the utility model is to be improved on the basis of 02243497.6 patent in the patent No., has increased when earth leakage protective socket lost efficacy, can pass through light, auditory tone cues/prompting user's function during end-of-life.

As shown in Figure 1, the disclosed earth leakage protective socket with prompt functions of the utility model is mainly combined by housing, the circuit board 18 that is installed in the socket the realized electric power output 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 demonstration lamp hole 17.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.Be embedded with the indicator light LED1 (being positioned on the circuit board 18) of warning usefulness in status indicator lamp hole 17.

Metal ground connection mounting panel 1 links to each other with the earth by earthing screw 1 ' (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 14 and a zero-power line output conductor 13 are installed in the both sides of middle layer bracket 3; At the two ends of power supply output conductor 14,13, 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 14,13 also is respectively equipped with alloy fixed contact 16,15.

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 81,80, on power supply output sheet metal 81,80, be provided with a pair of fixed contact 53,52.

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, the 110 charged and automatic detections of base 4 both sides, the function of processing leak current fault; The more important thing is to the utlity model has when current leakage jack life termination, can send the function of alarm signal.

As Fig. 1, shown in Figure 4, this circuit board 18 is provided with two groups of four elasticity power supplys input sheet metals 21,51 and 20,50; 21,51 1 groups of elastic sheet metals, 20,50 1 groups of elastic sheet metals.End at elastic sheet metal 21,51,50,20 is respectively equipped with moving contact 23,54,55,22, respectively with power supply output conductor 14,81,80,13 on fixed contact 16,53,52,15 corresponding (as shown in Figure 3), form two groups of four pairs of electric 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, shown in Figure 4, two groups of four elasticity power supplys input sheet metals 21,51 and 20,50 are bent downwardly 90 degree, pass differential differentiating transformer 19, link to each other with power supply input wires screw 9,10 by input wires sheet 25,24.

As Fig. 1, Fig. 4, Fig. 5-A, shown in Figure 6, on circuit board 18, also be provided with elasticity power supply input sheet metal 21,51,50,20 is connected with power supply output conductor 14,13,81,80 electric power/or the reset guide assembly 28 of disconnection.

This reset guide assembly 28 is positioned at the below of reset button 8, it is a rectangular cylinder, its left and right sides stretches out to form and carries arm, described elasticity power supply input sheet metal 21 and 51,50 and 20 is located in the top that arm is carried in reset guide assembly 28 left and right sides, and can move up and down along with reset guide assembly 28.Be provided with a vertical central perforation 29 at the top of reset guide assembly 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 reset guide assembly 28, cross " L " type lock buckling part 30 that reset guide assembly 28 is provided with a dextrorotation turnback of movably being made by metal material.End face at lock buckling part 30 also is provided with a perforation 31.Between side of reset guide assembly 28 and lock buckling part 30, be provided with a circular recess 33, be built-in with a spring 34.Be provided with a solenoid 26 that is built-in with movable core 42 in the outside of lock buckling part 30 sidewalls.

Between the bottom and circuit board 18 of reset guide assembly 28, be provided with a flexible unlock switch 37.This unlock switch 37 is made by elastic metallic material, and as Fig. 6, shown in Figure 8, an end 39 of this unlock switch 37 is become spheroidal moving contact towards circuit board by punching out, and the positive terminal of the rectification circuit out-put supply on resistance and circuit board links to each other; Its other end 38 is fixed on the circuit board, and whether charged silicon controlled control by circuit board and control solenoid 26 generation magnetic field extremely link to each other.As shown in Figure 8, when unlock switch 37 closures, the control utmost point of controllable silicon SCR gets electric, and the controllable silicon SCR conducting has electric current to pass through in the solenoid 26, produces magnetic field; When unlock switch 37 ends are opened, the control utmost point no-voltage of controllable silicon SCR, not conducting of controllable silicon SCR does not have electric current to pass through in the solenoid 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; shown in Fig. 1, Fig. 5-A, Fig. 5-B; the utility model below elasticity power supply input sheet metal 21,51 and 20,50 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 _J2With the display lamp LED1 series connection that is used for alarm, when earth leakage protective socket did not have power supply output, promptly pushing reset button 8 sockets did not still have power supply output, when showing socket inefficacy, end-of-life, and conductive electrode K _J1, K _J2The other end formation alarm loop that links to each other with elasticity power supply input sheet metal 21,20 respectively, display lamp LED1 is bright; When earth leakage protective socket has power supply output, i.e. when elasticity power supply input sheet metal 21,20 contacted with power supply output conductor 13,14, above-mentioned alarm loop disconnected, and LED1 does not work.

As Fig. 1, Fig. 6, 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 14.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, even short circuit current is through the live wire 14 of 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, there is electric current to flow through in the solenoid 26, produces magnetic field, make its inner iron core 42 actions, promoting lock buckling part 30 moves, reset guide post 35 is jumped out in lock buckling part 30, and reset guide assembly 28 falls elasticity power supply input conductor 21,51,50,20 fall, make its moving contact and power supply output conductor 14,13,81,80 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.When earth leakage protective socket inefficacy, end-of-life or spare and accessory parts broke down, the utility model made earth leakage protective socket transfer lock by a hand-machine tool trip link by force.As Fig. 6, shown in Figure 7, this machinery trip link D _jBe a plastic rod member, it is shaped as " L " type of dextrorotation turnback, and outwards tiltedly outstanding back, the middle part of the side arm that it extends downwards continues to extend promptly downwards

Type, its end face be resisted against testing button 7 below, between testing button 7 and test sheet metal 40, insert on " L " type lock buckling part 30 of dextrorotation turnback in its rectangular opening of offering 41 its side arm lower end.Push testing button 7 when downwards, when test sheet metal 40 is contacted with leakage tests resistance 27,, can make the earth leakage protective socket tripping operation, cut off the output of earth leakage protective socket power supply if earth leakage protective socket is intact.If earth leakage protective socket lost efficacy, can continue to push testing button 7 downwards, make mechanical trip link D _j" L " type lock buckling part 30 of side arm pulling dextrorotation turnback move, reset guide post 35 is jumped out in lock buckling part 30, reset guide assembly 28 falls, elasticity power supply input conductor 21,51,50,20 falls, the stationary contact of its moving contact and power supply output conductor 14,13,81,80 is opened, the output of socket non-transformer.

The utility model realizes that the principle that earth leakage protective, machinery dropout are connected with I/O electric power is:

As Fig. 1, Fig. 6, Fig. 7, shown in Figure 8, during the intact operate as normal of the utility model, press reset button 8, the reset guide post 35 that is attached thereto is moved down, and drive reset guide assembly 28 moves down, make the contact 39 of flexible unlock switch 37,38 contacts, solenoid 26 is charged, produces magnetic field, attract iron core 42 bump lock buckling parts 30, make it mobile, the central perforation 31 that lock buckling part is passed in the bottom of guiding lock 35 is because the inertia of elasticity unlock switch 37, unlock switch 37 pops up, the two ends 39 of unlock switch 37,38 disconnect, and no current passes through in the coil 26, and magnetic field disappears; Spring 34 between lock buckling part 31 and the reset guide assembly 28 back moves lock buckling part 30.Because the shell fragment 39 of elasticity unlock switch 37 pops up; make the central perforation 31 of lock buckling part 30 be slipped in the gathering sill 36; again because the release of the spring 91 on guiding lock 35 tops; reset guide assembly 28 moves up; moving contact 22,55,23,54 on the input flexibility sheet metal 20,50,21,51 and output on the metallic conductor 13,14 fixed contact 15,16 and the fixed contact 52,53 on the power supply output sheet metal 80,81 contact; the electric power of having realized power supply input, 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; 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; there is electric current to flow through in the solenoid 26, produces magnetic field, make its inner iron core 42 actions; promoting lock buckling part 30 moves; reset guide post 35 is jumped out in lock buckling part 30, and reset guide assembly 28 falls elasticity power supply input conductor 21; 51; 50; 20 fall; make its moving contact and power supply output conductor 14; 13; 81; 80 stationary contact is opened, the output of socket non-transformer.If certain the spare and accessory parts fault in the earth leakage protective socket can't make the earth leakage protective socket tripping operation, can continue to push testing button 7 downwards, make mechanical trip link D _jSide arm " L " type lock buckling part 30 of spurring the dextrorotation turnback by force move; reset guide post 35 is jumped out in lock buckling part 30; reset guide assembly 28 falls; elasticity power supply input conductor 21,51,50,20 falls; the stationary contact of its moving contact and power supply output conductor 14,13,81,80 is opened; the purpose that the earth leakage protective socket hand off is exported is finished in 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 addition, during certain spare and accessory parts fault in earth leakage protective socket, can also pass through the armstrong's patent trip link, make the earth leakage protective socket tripping operation by force, the output of cutting off the electricity supply.The utility model in use can be protected the safety of the person and electrical equipment more reliably.

Claims (3)

1, a kind of earth leakage protective socket with prompt functions, it is made up of housing, the circuit board that is installed in the socket the realized electric power output in the housing; This housing is combined by loam cake and base, has reset button hole, testing button hole at last cap surface, is provided with reset button and testing button in reset button hole and testing button hole;

Be provided with a testing elastic sheet metal below testing button, an end of testing elastic sheet metal is positioned at the below of testing button, and the other end links to each other with the power firestreak output conductor; It is characterized in that:

Below the elasticity power supply on circuit board 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; Described conductive electrode, current-limiting resistance and display lamp series connection constitute a display circuit.

2, a kind of earth leakage protective socket with prompt functions according to claim 1 is characterized in that: also be provided with a hand-machine tool trip link between testing button and test sheet metal; This machinery trip link is a plastic rod member, it is shaped as dextrorotation turnback " L " type, outwards tiltedly outstanding back, the middle part of the side arm that it extends downwards continues to extend downwards, its end face be resisted against testing button below, between testing button and test sheet metal, insert on " L " type lock buckling part of described dextrorotation turnback in its hole of offering its side arm lower end.

3, a kind of earth leakage protective socket with prompt functions 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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