CN201111303Y

CN201111303Y - Earth fault breaking apparatus with quick replacement characteristic

Info

Publication number: CN201111303Y
Application number: CNU2007201990216U
Authority: CN
Inventors: 李成力; 岳国兰
Original assignee: Shanghai ELE Manufacturing Corp
Current assignee: Shanghai ELE Manufacturing Corp
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-09-03
Anticipated expiration: 2017-12-07

Abstract

The utility model provides a grounding fault breaking arrangement, which comprises a leakage signal detection circuit, a reduction transmission part and an electromagnetic tripping mechanism. The leakage signal detection circuit is used to detect the leakage signals, generating a control signal in accordance with the leakage signal. The reduction transmission part comprises a reset button and a release link connected to the reset button that can be disposed on a the first position and a the second position. The electromagnetic tripping mechanism comprises a the first SCR device and a lock catch. When the reset button is pressed from the first position, the release link can be meshed with the lock catch. Thus the reduction transmission part is in linkage with the lock catch, and the reset button is moved to the second position. When the grounding fault breaking arrangement is in normal use, during the process that the reset button is pressed in the initial tripping state to the implementation of the functional mode of reduction break-over, the break-over of the SCR device in the electromagnetic tripping mechanism is not required to control the implementation of the movement. Therefore, the utility model has the rapid reduction characteristics.

Description

Grounding fault breaking apparatus with quick reset feature

Technical field

The utility model relates to a kind of grounding fault breaking apparatus, relates in particular to a kind of grounding fault breaking apparatus with quick reset feature.

Background technology

The earth leakage protective socket of reverse wiring protection function, creepage protection function has appearred having in safe in utilization for other electric equipments such as household electrical appliance.Applicant's of the present utility model utility model patent 02243497.6 and U.S. Pat 7019952 have been introduced a kind of earth leakage protective socket, and these two patent documentations quote in full herein.During installation, if wiring error, this earth leakage protective socket can stop power input to be connected with output electric power; The power input line reversal connection is during to the socket output, the output of earth leakage protective socket output no-voltage, and have only when the socket wiring is correct, socket just can reset, and the socket output just has voltage output.

Existing grounding fault breaking apparatus with reverse wiring protection function; when normal the use; press reset button to realizing resetting the conducting operating state by initial trip status; the action of electromagnetic trip mechanism needs solenoid to flow through the magnetic force that enough electric currents produces to drive in this process, and flow through big electric current in the solenoid can only be in the half period of ac period, could realize during the silicon-controlled device conducting.

The utility model content

The grounding fault breaking apparatus that the utility model provides, when normal the use, press reset button in the process of the conducting operating state that realizes resetting by initial trip status, the realization that does not need the conducting of the silicon-controlled device in the electromagnetic trip mechanism to come control action has possessed the characteristic that resets fast.

The utility model adopts following technical scheme for achieving the above object, and a kind of grounding fault breaking apparatus is provided, and it comprises: leakaging signal detecting circuit, the running part that resets, electromagnetic trip mechanism; Described leakaging signal detecting circuit is used to detect electric leakage signal, produces a control signal according to electric leakage signal; The described running part that resets comprise a reset button, with the return pin that described reset button links to each other, described reset button can be in a primary importance or a second place; Described electromagnetic trip mechanism comprises one first silicon-controlled device, a snap close; When described reset button is pressed from described primary importance, described return pin can with described latch engagement, thereby make described reset running part and the interlock of described snap close, described reset button moves to the described second place; When described reset button is in the described second place, the control signal that described first silicon-controlled device is produced by described electric-leakage detection circuit is controlled and conducting, cause described electromagnetic trip mechanism and produce action, thus make described reset button from described second site reversion to described primary importance.

Grounding fault breaking apparatus provided by the utility model should be noted that a bit: promptly do not have correctly when input inserts power supply at this device, because do not need signal of telecommunication control not reset, can occur that mistake resets and the situation that is difficult for recovering trip status.Therefore, in the further improvement of the utility model design, increased an action controlling organization, this action controlling organization is controlled by the input power supply signal of described grounding fault breaking apparatus, with the interlock of described electromagnetic trip mechanism, so that describedly reset the running part action effectively or lost efficacy; When described grounding fault breaking apparatus is incorrect when inserting power supply, described action controlling organization and the acting in conjunction of described electromagnetic trip mechanism make the described running part action inefficacy that resets, and promptly can not finish reseting procedure; When described grounding fault breaking apparatus correctly inserted power supply, described action controlling organization produced action, and the described running part action that resets is come into force, and promptly can finish reseting procedure.In specific embodiment of the utility model, this action controlling organization can be realized with the solenoid of ribbon core.

In further improvement of the utility model, can also increase a switch, this switch is subjected to the action control of the described running part that resets and moves; When described grounding fault breaking apparatus was in trip status, described switch disconnected, and the silicon-controlled device in the described electromagnetic trip mechanism can't conducting; When described grounding fault breaking apparatus is in when resetting conducting state, described switch closure, silicon-controlled device in the described electromagnetic trip mechanism recovers the connection of bias voltage, when detecting electric leakage signal, the conducting that is triggered of described first silicon-controlled device, the electric current that flow through electromagnetic trip mechanism this moment is enough to make its execution, disconnects the connection of input, output.

For the functional reliability of the grounding fault breaking apparatus further strengthening providing in the utility model, can also give described first silicon-controlled device one second silicon-controlled device, the perhaps more silicon-controlled devices of parallel connection in parallel.

Description of drawings

Fig. 1 is the side sectional view of the utility model embodiment 1 under trip status;

Fig. 2 is the side sectional view of the utility model embodiment 1 under reset mode;

Fig. 3 is the circuit diagram of the utility model embodiment 1.

Embodiment

In order to understand the utility model better, be described further below in conjunction with specific embodiment of the utility model, but it does not limit the utility model.

Describe specific embodiment of the utility model in detail below in conjunction with Fig. 1, Fig. 2 and Fig. 3.

With reference to figure 1, Fig. 2, Fig. 3, the input lead is arranged to 36 below the support 5, which is provided with

electrical contact

67,68; The input lead is provided with the socket lead to 38 to 36 both sides, and

electrical contact

66,69 is arranged on it; The input lead to 36 and the socket lead be provided with the disconnected lead of output under to 38 to 37, wire of output terminal to have on 37

electrical contact

61,62,63,64 respectively with the input lead to 36 and the socket lead corresponding to the

electrical contact

66,67,68,69 on 38, and

electrical contact

61 and 62 is communicated with,

electrical contact

63 and 64 is communicated with, more than recovery switch in these electrical contact corresponding diagram 3.

Be provided with reset button 8 above support 5, reset button 8 connects return pin 9, and return pin 9 is passed support 5, is provided with back-moving spring 21 between reset button 8 and the support 5, and back-moving spring 21 is enclosed within on the return pin 9; Support 5 belows are provided with release 27, and release 27 has a central perforation, and return pin 9 extend among this central perforation.

Continuation is with reference to figure 1, Fig. 2, Fig. 3, and the side of release 27 is provided with two

wire jumpers

11,12 and is connected on the circuit board 6; Wire jumper 11 is provided with electrical contact 58, and wire jumper 12 is provided with electrical contact 57; Electrical contact 58,57 consistencies from top to bottom, the switch SW 1 in these two electrical contact corresponding diagram 3; The horizontal direction arm of wire jumper 12 is in the middle of two horizontal extensions of release 27 and clamped down on by it, and electric contact 57,58 does not contact under the trip status, makes electric contact 57,58 contacts, switch SW 1 closure thereby can hold up wire jumper 12 when release 27 lifts.

A L type snap close 24 is arranged in the release 27, and the horizontal arm of snap close 24 stretches into release 27 and passes central perforation; The horizontal arm of snap close 24 is provided with perforation 25, and snap close 24 can move by along continuous straight runs between the position that the position and the offset from center of perforation 25 alignment central perforations are bored a hole; One side of L type snap close 24 is provided with trip assembley therefor, comprises solenoid 33, dropout spring 32 and dropout iron core 31; One end of dropout iron core 31 is connected with dropout spring 32, and places solenoid 33 together; Perforation 28 engagements on the groove 34 of dropout iron core 31 other ends and the upright arm of snap close 24, when flowing through enough big electric current in the solenoid 33, dropout iron core 31 can be subjected to magnetic force to influence along continuous straight runs to move, thus drive snap close 24 correspondingly moves.

For present embodiment, the action controlling organization is realized the RELAY in solenoid 43 corresponding diagram 3 by the solenoid 43 that is arranged at snap close 24 opposite sides, spring 42, armature 41 and the baffle plate 44 that is connected on the armature 41.This action controlling organization can interact by snap close 24 and trip assembley therefor.

With reference to figure 1, Fig. 3, at trip status, the input lead to 36, the socket lead is in off-state with wire of output terminal to 37 to 38; When mistake power supply is inserted from output, perhaps input does not connect power supply, the action controlling organization can interact by snap close 24 and trip assembley therefor, make the central perforation that releases 27 are aimed in perforation 25 on the snap close 24, press reset button 8, return pin 9 can't with snap close 24 engagement, the input lead to 36, the socket lead still is in off-state with wire of output terminal to 37 to 38, output and socket must not.

With reference to figure 1, Fig. 2, Fig. 3, insert power supply when correct by input, solenoid 43 is switched on, and produces magnetic force armature 41 is moved, thereby make snap close 24 be moved to pin 9 position engaged that can be reset in the effect of dropout iron core 31; Press reset button 8, thereby return pin 9 is passed 25 from boring a hole and snap close 24 engagements, when the effect of reset button 8 because of back-moving spring 21 pops up, drive release 27 moves up thereupon, electric contact 57 contacts with 58, switch SW 1 closure, the input lead to 36, the socket lead is in connected state with wire of output terminal to 37 to 38, indicator light LED lights, output and socket electrifying.

Certainly; the utility model can also have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art should make various corresponding changes according to the utility model, but these corresponding changes all should belong to the protection range of the utility model claim.

Claims

1. grounding fault breaking apparatus, it comprises:

Leakaging signal detecting circuit is used to detect electric leakage signal, produces a control signal according to electric leakage signal;

The running part that resets, this running part that resets comprise a reset button, with the return pin that described reset button links to each other, described reset button can be in a primary importance or a second place;

Electromagnetic trip mechanism, this electromagnetic trip mechanism comprise one first silicon-controlled device, a snap close;

When described reset button is pressed from described primary importance, described return pin can with described latch engagement, thereby make described reset running part and the interlock of described snap close, described reset button moves to the described second place;

When described reset button is in the described second place, the control signal that described first silicon-controlled device is produced by described electric-leakage detection circuit is controlled and conducting, cause described electromagnetic trip mechanism and produce action, thus make described reset button from described second site reversion to described primary importance.

2. grounding fault breaking apparatus according to claim 1, it is characterized in that, also comprise the action controlling organization, this action controlling organization is controlled by the input power supply signal of described grounding fault breaking apparatus, with the interlock of described electromagnetic trip mechanism, so that describedly reset the running part action effectively or lost efficacy.

3. grounding fault breaking apparatus according to claim 2, it is characterized in that, described electromagnetic trip mechanism also comprises a switch, and the anode of described first silicon-controlled device is introduced bias voltage by described switch, and described switch is subjected to the control of the described running part action that resets and moves; When described reset button was in described primary importance, described switch disconnected, when described reset button is in the described second place, and described switch closure.

4. according to claim 2 or 3 described grounding fault breaking apparatus, it is characterized in that described action controlling organization comprises the solenoid of a ribbon core, the iron core in this solenoid connects a baffle plate;

When described grounding fault breaking apparatus access failure input power supply, described baffle plate interacts with described electromagnetic trip mechanism by described snap close, make described snap close be in can't with described return pin position engaged, thereby make the described running part action inefficacy that resets.

5. according to each described grounding fault breaking apparatus among the claim 1-4, it is characterized in that, described electromagnetic trip mechanism also comprises one second silicon-controlled device, and the anode of this second silicon-controlled device, negative electrode, the control utmost point are extremely in parallel with anode, negative electrode, the control of described first silicon-controlled device respectively.