CN205622224U - Preventing arc type divides disconnected surge protection device fast - Google Patents

Abstract

The utility model discloses a surge protection device of instantaneous surge overvoltage among the suppression circuit, include the preventing arc subassembly, voltage sensitive subassembly, response switch module, temperature sensitive element, inner shell and the enclosing cover that constitute by elastic element and preventing arc catapult. The voltage sensitive subassembly has inseparable thermal coupling with the response switch module, when factors such as the instantaneous surge overvoltage on the circuit make the voltage sensitive subassembly hinder the short -circuit current continuous heating intensification for some reason, the response switch module makes the action of preventing arc subassembly launch the separation because of temperature sensitive element's thermal coupling response, the switch module is hidden by the preventing arc subassembly simultaneously, prevent the short circuit overload that the arc formation electrical breakdown of production caused when the switch launched the separation, conflagration and explosion hidden danger have been avoided effectively, prevent that electronic equipment from causing the secondary to destroy.

Description

A kind of surge protection device of the quick disjunction of anti-arc

Technical field

This utility model relates to a kind of circuit protection device, particularly relates to one and has and prevent electric arc from producing and at short circuit overcurrent The surge protection device of the quickest breaking function.

Background technology

Surge protector or surgesuppressor (surge suppressor), be also surge protection device, is a kind of for various sensitivities Or the electronic equipment of costliness, as the electronic component on computer and communication relevant device provides the protection device of overvoltage security protection. Existing surge protection device is typically to aim at the surge overvoltage protection design under medium or generic condition, thus the most electric in surge When pressure energy is less or the time is shorter, surge protection device now can not rapid sensitive response protection, so we would generally Element (such as varistor) is protected to be directly applied on electronic circuit realize the purpose of protection electronic circuit voltage-sensitive.Conventional Varistor be the electronic device including being made up of Zinc oxide particles and complicated intracrystalline granular materials, it is a voltage non-thread Property device, unique voltage-current characteristic is the preferable protection device of sensitive electronic circuit, but its material composition determines self Easily damaging catching fire when overvoltage short circuit is transshipped, electronic circuit and element to neighbouring sensitivity produce catastrophic destruction. So, it would be desirable to a kind of safer sensitiveer surge protection device, can be applicable to such as communication, computer, TV, air-conditioning etc. In the protection of the surge overvoltage short circuit overload in high-accuracy control circuit, such as electronic circuit because extra electromagnetic interference is produced suddenly When raw momentary spike electric current or overvoltage, this surge protection device can turn on absorption within moment, power down of releasing comes through voltage and rises To protection electronic equipment effect, and short circuit overload cause surge device to damage time energy this surge protection device of sharp separation, it is to avoid Cause fire that electronic equipment is formed catastrophic failure.

The surge protector of current existing band arc-suppression function or surgesuppressor, its commonly used method covering also breaking arc Arc extinguishing, as Chinese patent number 200810088691.X discloses heat protection pressure sensitive resistor module and Chinese patent number 201420145977.8 designs disclosing a kind of surgesuppressor with arc-suppression function, the switch electricity of this kind of responding to switch assembly Pole is when heat departs from, and its separating action uses and covers and the mode of breaking arc, and the Zhe Hu mechanism in the method need to have one Stroke get to position cover, breaking arc, it is impossible in the space of switch time of releasing Shi Zhe arc mechanism access switch electrode with Breaking arc, so, moment transshipped by varistor under these conditions in a large number, overheated and finally cause fire, blast, this Plant catastrophic destruction and can burn neighbouring sensitive electronic equipment and element, thus cause the collapse of whole electronic system to damage.

Summary of the invention

The purpose of this utility model be to overcome the existing surge protection device defect when overvoltage causes device short circuit to transship and Not enough, it is provided that a kind of novel quickly to respond surge protection device, it can be effectively prevented electric arc and produce and when short circuit is transshipped Energy this surge protection device of sharp separation, fundamentally can stop disaster hidden-trouble thus ensure the safety of electronic equipment.

For achieving the above object, this utility model is achieved through the following technical solutions.

This utility model provide the quick disjunction of a kind of anti-arc surge protection device, including preventing arc assembly, voltage-sensitive assembly, Electrode lead-out pins, responding to switch assembly and the housing being made up of inner shell and enclosing cover.Preventing arc assembly includes preventing arc ejector and elasticity Element；Voltage-sensitive assembly is made up of at least one voltage sensitive element；Electrode lead-out pins includes that flexible conductor, the first electrode are drawn Foot and the second electrode lead-out pins；Responding to switch assembly includes temperature-sensitive element, front electrode and by flexible lamp pole piece, electrode welding Hold and cut-off position and form the tripping electrode that electrical connection is constituted.

Form the first cavity and the second cavity, preventing arc assembly and responding to switch assembly when inner shell engages with enclosing cover and be arranged on the first chamber On body.Voltage sensitive element can be made up of varistor or the sensing element such as discharge tube, discharging gap, and it is arranged on the second chamber Internal.Being provided with metal electrode film at voltage sensitive element tow sides, front electrode is located on one of them metal electrode film, its Reached in the first cavity by the second cavity, front electrode is provided with the slotted eye that power pole welding ends stretches out；Another metal electricity Having backplate on pole piece, it is in the second cavity.

Preventing arc ejector front end is provided with the through hole that power pole welding ends stretches out, when preventing arc ejector and front electrode are on the first cavity When touching, through hole is corresponding with the position of slotted eye, to guarantee that electrode welding end can be also cross through hole and slotted eye.

Cut-offfing position is the metal alloy compositions of instant vaporization after a kind of fusing, when the transient surges overvoltage by cut-offfing position, the most electric Stream or short circuit overcurrent be when exceeding preset threshold value, cut-offs position and can fuse vaporization, thus promotes the flexible lamp pole piece of tripping electrode Separate with electrode welding end, i.e. realize surge protection device and possess the function of quickly disjunction under short circuit overcurrent.

Preventing arc ejector is provided with steam vent, in tripping electrode is placed on preventing arc ejector, when electrode welding end stretches out through hole, Cut-off position corresponding with the position of steam vent, to guarantee to cut-off position under short circuit overcurrent during fusing vaporization, its blast produced Blast can be released by steam vent, can reach the effect utilizing blast moment to elongate and blow electric arc simultaneously.

Temperature-sensitive element is a kind of meltable metal alloy solder, can temperature threshold of its fusing preset, reaching preset temperature threshold During value, temperature-sensitive element can melt rapidly.

This utility model further illustrates, and surge protection device also includes instruction device and the remote signalling alarm dress indicating its duty Put.Instruction device is electrically to indicate device, such as light emitting diode；Or mechanical indication means.Cover outside and be provided with for showing Show that the indication window of instruction device action state, i.e. surge protection device have duty instruction and the function of remote signalling alarm.? When using surge protection device work in power-supply system, tripping electrode is hidden in preventing arc ejector, and electrode welding end stretches out through hole And slotted eye, it is electrically connected with front electrode soldering composition by temperature-sensitive element；First cavity is provided with slot, at the second cavity Being provided with draw-in groove, the first electrode lead-out pins enters the first cavity by slot, and the second electrode lead-out pins enters the second chamber by draw-in groove Body；The two ends of flexible conductor by the way of metal alloy solder soldering or spot welding respectively with flexible lamp pole piece and the first electrode lead-out pins Inner formation electrically connects, and backplate is formed with second electrode lead-out pins the inner by the way of metal alloy solder soldering and electrically connects； First electrode lead-out pins outer end and the second electrode lead-out pins outer end are stretched out and are become external pin outside inner shell, and these two external pins It is connected on phase line and the neutral conductor or ground wire.The normally closed work shape of formation thus responding to switch assembly is connected with voltage-sensitive assembly State, the switch of remote signalling alarm device is not oppressed by external carbuncle, is surge protection device normal operating conditions.

Further, of the present utility model prevent electric arc from producing and quickly the technology of breaking function illustrates such as under short circuit overcurrent Under:

Flexible member is made up of the first elastic component and the second elastic component.First elastic component is located on preventing arc ejector, flexible lamp pole piece Biased by it；Second elastic component is located on the first cavity, and preventing arc ejector is biased by it.If voltage sensitive element is because of on circuit The leakage current of short circuit overcurrent and the aging generation of its shelf-life causes voltage sensitive element temperature rise, this temperature transfer to front electricity Extremely going up, promote temperature-sensitive element thereon to reach preset temperature threshold value and melt, flexible lamp pole piece is at the elastic stress of the first elastic component Under effect, being launched rapidly by electrode welding end and go back on defense in arc ejector before electric arc produces, preventing arc ejector is elastic by second simultaneously The elastic stress effect of part is launched to the direction away from front electrode.The temperature-sensitive element of fusing on electrode welding end is scraped by through hole Remove, form the dielectric strength of abundance between front electrode and electrode welding end, thoroughly completely cut off between tripping electrode and front electrode Electrical connection.

Another kind of situation, if exceeding preset threshold by the transient surges overvoltage of tripping electrode, overcurrent or short circuit overcurrent During value, thereon cut-offfing the fusing vaporization of moment and cause flexible lamp pole piece to separate with electrode welding end, flexible lamp pole piece is by the simultaneously The elastic stress effect of one elastic component is launched to the direction away from electrode welding end, and preventing arc ejector should by the elasticity of the second elastic component Power effect is launched to the direction away from front electrode, in wherein flexible lamp pole piece is hidden in preventing arc ejector.So, electrode welding Form the dielectric strength of abundance between end and flexible lamp pole piece, thoroughly prevent the electric arc produced during flexible lamp pole piece disjunction from forming electric shock Wear；Its blast cut-off at position another is released by steam vent, and moment is elongated and blows because of flexible lamp pole piece and electricity simultaneously The electric arc produced during the welding ends disjunction of pole.

Now the duty of responding to switch assembly by normally closed be changed into normally opened, during instruction device on surge protection device send out Raw moving displacement, can be observed its change different from normal operating conditions (being such as changed into red display) from indication window, simultaneously The switch of remote signalling alarm device, by external carbuncle effect, promotes its on off state to change, thus sends signal of telecommunication instruction surge and protect Protection unit shielding failure.

Wherein, big than the second elastic component of the elastic stress of the most preset first elastic component, de-with guarantee in responding to switch assembly Button electrode is when moment departs from, and electrode welding end thereon can quickly launch and be hidden in all the time in preventing arc ejector, itself and through hole Between remain sufficient dielectric strength.

Compared with prior art, the advantage that this utility model exists:

The surge protection device of the quick disjunction of anti-arc of the present utility model has a temperature rise moment of being heated and launches disengaging (as by self longevity Order the leakage current of aging generation) and overvoltage short circuit overload moment launch the defencive function of disengaging, responding to switch assembly is in temperature of being heated Rising moment can hide tripping electrode when launching disengaging, or short circuit transship moment launch disengaging time ingenious utilize tripping electrode to divide Time disconnected, produced blast moment is elongated and blows electric arc, no matter which kind of departs from situation, this protection device can be divided moment Break and tripping electrode is hidden, just having been formed with the dielectric strength of effect when electric arc does not also produce, thoroughly prevent electric arc from producing, this It is not available for current surge protection device.

Accompanying drawing explanation

Fig. 1 is that in this utility model embodiment 1, the structure of surge protection device disassembles schematic diagram；

Fig. 2 is the structure schematic diagram of inner shell in this utility model embodiment 1；

Fig. 3 is the generalized section of surge protection device normal operating conditions in this utility model embodiment 1；

Fig. 4 is the generalized section in this utility model embodiment 1 after the dropout of surge protection device fault heat；

Fig. 5 is the generalized section after surge protection device fault current cut-offs in this utility model embodiment 1；

Fig. 6 is the combinative structure schematic diagram of preventing arc ejector and tripping electrode in this utility model embodiment 2；

Fig. 7 is the generalized section of surge protection device normal operating conditions in this utility model embodiment 2；

Fig. 8 is the generalized section in this utility model embodiment 2 after the dropout of surge protection device fault heat；

Fig. 9 is the generalized section after surge protection device fault current cut-offs in this utility model embodiment 2；

Figure 10 is the generalized section of surge protection device normal operating conditions in this utility model embodiment 3；

Figure 11 is the generalized section in this utility model embodiment 3 after the dropout of surge protection device fault heat；

Figure 12 is the generalized section after surge protection device fault current cut-offs in this utility model embodiment 3；

Figure 13 is the combinative structure schematic diagram of inner shell and preventing arc ejector in this utility model embodiment 4；

Figure 14 is the generalized section of surge protection device normal operating conditions in this utility model embodiment 4；

Figure 15 is the generalized section in this utility model embodiment 4 after the dropout of surge protection device fault heat；

Figure 16 is the generalized section after surge protection device fault current cut-offs in this utility model embodiment 4；

Figure 17 is a kind of special construction schematic diagram of tripping electrode in this utility model.

Reference: 1-inner shell, 1a-the first cavity, 1b-the second cavity, 1c-the first end, 1d-the second end, 11-electrode hole, 12-groove, 13-guide rail, 14-slot, 15-draw-in groove, 16-remote signalling breach, 17-limited block, 18-electrode baffle plate, 2-enclosing cover, 2a-indication window, 3-flexible member, 3a-the first elastic component, 3b-the second elastic component, 4-preventing arc ejector, 4a-through hole, 4b- Steam vent, 41-wing arm, 42-spring groove, 43-chute, 5-voltage sensitive element, 51-the first electrode, 51a-slotted eye, 52- Second electrode, 6-tripping electrode, 6a-flexible lamp pole piece, 6b-electrode welding end, 6c-cut-offs position, 7-flexible conductor, 8-the first electricity Pole leading foot, 8a-the first electrode lead-out pins outer end, 8b-the first electrode lead-out pins is inner, 9-the second electrode lead-out pins, 9a-second Electrode lead-out pins outer end, 9b-the second electrode lead-out pins is inner, and 10-indicates device, 20-remote signalling alarm device, and 20a-alerts extraction Foot, 30-temperature-sensitive element.

Detailed description of the invention

With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings, but protection model of the present utility model Enclose and be not limited solely to following preferred embodiment, every strengthen by this utility model launches hiding tripping electrode The technical scheme of current interruption insulation effect, all in protection domain of the present utility model；In this utility model, surge protection device is to electricity The material type of pressure-sensitive sensing unit, flexible member, the first elastic component, the second elastic component and flexible conductor does not limits, following In detailed description of the invention, with flexible member 3 for stage clip 3, the first elastic component 3a is the first stage clip 3a, and the second elastic component 3b is Second stage clip 3b, voltage sensitive element 5 is varistor 5, as a example by flexible conductor 7 is soft copper wire 7, is described in detail this The structure of utility model surge protection device.

Embodiment 1:

As depicted in figs. 1 and 2, the surge protection device of the quick disjunction of a kind of anti-arc, including inner shell 1, enclosing cover 2, two One stage clip 3a, two the second stage clip 3b, 4, varistor 5 of preventing arc ejector, soft copper wire the 7, first electrodes are drawn Foot the 8, second electrode lead-out pins 9, instruction device 10, remote signalling alarm device 20 and tripping electrode 6；Described tripping electrode 6 By flexible lamp pole piece 6a and electrode welding end 6b by cut-off a 6c is formed electrically connect constituted.

Two metal electrode films of varistor 5 are welded to positive and negative two silver electrode of varistor 5 by the way of soldering On surface, one of them metal electrode film has front electrode 51, front electrode 51 also has power pole welding ends 6b and stretches The slotted eye 51a gone out；Another metal electrode film extends the part of bending from its plane and defines backplate 52.Inner shell 1 is Closed-in construction, when inner shell 1 engages by the way of snap close with enclosing cover 2, can form the first cavity 1a in the front of inner shell 1, The second cavity 1b can be formed at the back side of inner shell 1.When varistor 5 is placed in the second cavity 1b, front electrode 51 leads to Cross and run through the electrode hole 11 of the first cavity 1a and the second cavity 1b on inner shell 1 and reach the first cavity 1a, now slotted eye 51a Also in the first cavity 1a；Backplate 52 extend in the groove 12 of the second cavity 1b side.On the first cavity 1a Electrode hole 11 both sides are respectively provided with a guide rail being perpendicular to bottom inner shell 1 13, and the long channel opening of two guide rails 13 is relative.From The bottom of the first cavity 1a side that groove 12 is farthest is provided with the slot 14 run through bottom inner shell 1.Nearest from groove 12 The second cavity 1b side be provided with L-type and run through the draw-in groove 15 bottom inner shell 1, the inner of draw-in groove 15 is with groove 12 even Logical.

Preventing arc ejector 4 is the box like structure with cavity, and its cavity both sides are respectively provided with a spring groove 42.Preventing arc ejector 4 Antetheca is provided with the through hole 4a that power pole welding ends 6b stretches out, and is respectively provided with one in preventing arc ejector 4 both sides and can insert guide rail 13 Wing arm 41, when front electrode 51 stretches out electrode hole 11, preventing arc ejector 4 is slided on guide rail 13 by its two flanks arm 41 Dynamic until touching front electrode 51, now through hole 4a is the most corresponding with the position of slotted eye 51a.It is additionally provided with on preventing arc ejector 4 Steam vent 4b, in tripping electrode 6 is hidden in preventing arc ejector 4 cavity, when electrode welding end 6b stretches out through hole 4a, cut-offs 6c is corresponding with the position of steam vent 4b in position.

In the present embodiment, instruction device 10 is a push rod, and it is located at the end of preventing arc ejector 4, with preventing arc ejector 4 is One is overall, and the relevant position on enclosing cover 2 is provided with the indication window 2a stretched out for instruction device 10, and remote signalling alarm device 20 is Independent switch.

As it is shown on figure 3, remote signalling alarm device 20 is arranged in enclosing cover 2, its alarm leading foot 20a stretches out outside enclosing cover 2.Two Second stage clip 3b is individually positioned in two guide rails 13, preventing arc ejector 4 inserted in guide rail 13 by two flank arms 41 until Touching front electrode 51, two the second stage clip 3b are compressive state.Two the first stage clip 3a are individually positioned in two spring grooves 42 In, it is interior until electrode welding end 6b stretches out through hole 4a and slotted eye 51a, float electrode that tripping electrode 6 inserts preventing arc ejector 4 Sheet 6a two the first stage clip 3a of compressing make it be compressive state, and now the elastic stress of the first stage clip 3a is than the second stage clip 3b's Elastic stress is big.Electrode welding end 6b is electrically connected with front electrode 51 soldering formation by temperature-sensitive element 30；First electrode is drawn Foot 8 and the second electrode lead-out pins 9 are fixed on inner shell 1 by slot 14 and draw-in groove 15 respectively, and make the first electrode lead-out pins Outer end 8a and the second electrode lead-out pins outer end 9a stretches out and becomes external pin outside inner shell 1, and metal is passed through at the two ends of soft copper wire 7 The mode of solder soldering or spot welding is formed with flexible lamp pole piece 6a and first electrode lead-out pins the inner 8b respectively and electrically connects；The back of the body Face electrode 52 is formed with second electrode lead-out pins the inner 9b by the way of metal alloy solder soldering and electrically connects, thus these are electric Conductor is connected with varistor 5 and forms normally closed switch.When using surge protection device in the power supply system, two external are drawn Foot is connected on phase line and the neutral conductor or ground wire, now, instruction device 10 in indication window 2a, remote signalling alarm device The switch of 20 is not oppressed by external carbuncle, is the normal operating conditions of surge protection device.

According to a detailed description of the invention of the present utility model, when varistor 5 is because of the short-circuit overcurrent on circuit and self longevity The leakage current ordering aging generation causes varistor 5 temperature rise, in this temperature transfer to front electrode 51, promotes temperature-sensitive thereon Element 30 reaches preset temperature threshold value and melts, and as shown in Figure 4, flexible lamp pole piece 6a is made by the elastic stress of the first stage clip 3a Going back on defense in arc ejector 4 with being launched rapidly by electrode welding end 6b, preventing arc ejector 4 should by the elasticity of the second stage clip 3b simultaneously Power effect is launched to the direction away from front electrode 51, and final instruction device 10 stretches out indication window 2a, flexible lamp pole piece 6a And the switch of remote signalling alarm device 20 is caused and oppresses and static by preventing arc ejector 4 end, its on off state is promoted to change. The most both complete a mechanical Indication of Losing Efficacy, send again the remote signalling signal of telecommunication of this surge protection device shielding failure simultaneously. Now, between electrode welding end 6b and front electrode 51, form sufficiently large dielectric strength, thoroughly completely cut off tripping electrode 6 with Electrical connection between front electrode 51.

According to another detailed description of the invention of the present utility model, when by the transient surges overvoltage of tripping electrode 6, overcurrent or Short circuit overcurrent is when exceeding preset threshold value, thereon cut-off the 6c moment vaporization that fuses and causes flexible lamp pole piece 6a and electrode Welding ends 6b separates, as it is shown in figure 5, flexible lamp pole piece 6a and preventing arc ejector 4 are respectively by the first stage clip 3a and the second stage clip The elastic stress effect of 3b is launched to the direction away from front electrode 51 simultaneously, and final instruction device 10 stretches out indication window 2a, The switch of remote signalling alarm device 20 is caused by flexible lamp pole piece 6a and preventing arc ejector 4 end oppresses and static, promotes it to switch State changes.The most both complete a mechanical Indication of Losing Efficacy, send again this surge protection device shielding failure simultaneously The remote signalling signal of telecommunication.Now, electrode welding end 6b separates with flexible lamp pole piece 6a, electrode welding end 6b and flexible lamp pole piece Form sufficiently large dielectric strength between 6a, thoroughly completely cut off the electrical connection between flexible lamp pole piece 6a and front electrode 51.

Embodiment 2:

The another embodiment of the surge protection device of the quick disjunction of a kind of anti-arc of the present utility model.This embodiment have with In embodiment 1, the major part similar structure of assembly and usage, differ primarily in that ejection mode and the tripping electrode 6 of preventing arc assembly Structure different and surge protection device is without remote signalling alarm device 20.

As shown in Figure 6, the cavity structure that preventing arc ejector 4 opens wide for top, its both sides shell wall respectively has a T-shaped cunning Groove 43, the flexible lamp pole piece 6a both sides prolongation of tripping electrode 6 stretches out outside preventing arc ejector 4 by chute 43, preventing arc bullet The antetheca of emitter 4 is provided with the through hole 4a that electrode welding end 6b stretches out, and when flexible lamp pole piece 6a both sides, prolongation slides into chute During 43 front end, electrode welding end 6b stretches out outside preventing arc ejector 4 by through hole 4a, and instruction device 10 is a push rod, and it sets At the end of preventing arc ejector 4, it is an entirety with preventing arc ejector 4.

Structure shown in Fig. 6 is replaced corresponding structure in Fig. 3, as it is shown in fig. 7, two stage clips 3 are individually positioned in two and lead In rail 13, the both sides prolongation that flexible lamp pole piece 6a stretches out outside preventing arc ejector 4 inserts in guide rail 13, and drives preventing arc bullet Emitter 4 is until it touches front electrode 51, and now electrode welding end 6b stretches out through hole 4a and slotted eye 51a, flexible lamp pole piece 6a Oppressing two stage clips 3 makes it be compressive state.Electrode welding end 6b forms electricity by temperature-sensitive element 30 and front electrode 51 soldering Connect.When using surge protection device in the power supply system, two external pins are connected to phase line and the neutral conductor or ground wire On, now, instruction device 10 contracts in indication window 2a, is the normal operating conditions of surge protection device.

According to a detailed description of the invention of the present utility model, when varistor 5 is because of the short-circuit overcurrent on circuit and self longevity The leakage current ordering aging generation causes varistor 5 temperature rise, in this temperature transfer to front electrode 51, promotes temperature-sensitive thereon Element 30 reaches preset temperature threshold value and melts, and as shown in Figure 8, flexible lamp pole piece 6a will by the elastic stress effect of stage clip 3 Electrode welding end 6b launches back rapidly in through hole 4a, and flexible lamp pole piece 6a both sides prolongation slides into chute 43 end subsequently Time drive preventing arc ejector 4 to continue to launch to the direction away from front electrode 51, final instruction device 10 stretches out indication window 2a And it is static to be obstructed, this completes a mechanical Indication of Losing Efficacy.Now, between through hole 4a and electrode welding end 6b with And between front electrode 51 and through hole 4a, it is respectively formed sufficiently large dielectric strength, thoroughly completely cut off tripping electrode 6 and front electrode Electrical connection between 51.

According to a detailed description of the invention of the present utility model, when by the transient surges overvoltage of tripping electrode 6, overcurrent or Short circuit overcurrent is when exceeding preset threshold value, thereon cut-off the 6c moment vaporization that fuses and causes flexible lamp pole piece 6a and electrode Welding ends 6b separates, as it is shown in figure 9, flexible lamp pole piece 6a by the elastic stress effect of stage clip 3 to away from front electrode 51 Direction is launched, subsequently flexible lamp pole piece 6a both sides prolongation drive when sliding into chute 43 end preventing arc ejector 4 continue to Direction away from front electrode 51 is launched, and final instruction device 10 stretches out indication window 2a and is obstructed static, this completes One mechanical Indication of Losing Efficacy.Now, between electrode welding end 6b and through hole 4a and through hole 4a and flexible lamp pole piece 6a Between be respectively formed sufficiently large dielectric strength, thoroughly completely cut off the electrical connection between flexible lamp pole piece 6a and front electrode 51.

Embodiment 3:

The another embodiment of the surge protection device of the quick disjunction of a kind of anti-arc of the present utility model.This embodiment have with The major part similar structure of assembly and usage in embodiment 2, differ primarily in that the ejection mode of preventing arc assembly is different and surge Protection device is without instruction device 10 and indication window 2a, but indicates using remote signalling alarm device 20 as duty.

As shown in Figure 10, remote signalling alarm device 20 is arranged in enclosing cover 2, and its alarm leading foot 20a stretches out outside enclosing cover 2.Anti- Arc ejector 4 is baffle arrangement, and it is vertically fixed on below electrode hole 11, is provided with power pole welding ends 6b and stretches out on baffle plate Through hole 4a, through hole 4a both sides be respectively provided with a spring groove 42, two stage clips 3 are individually positioned in two spring grooves 42, live The both sides prolongation of galvanic electricity pole piece 6a inserts in guide rail 13, until electrode welding end 6b stretches out through hole 4a and slotted eye 51a, Flexible lamp pole piece 6a two stage clips 3 of compressing make it be compressive state.Electrode welding end 6b passes through temperature-sensitive element 30 and front electrode 51 solderings form electrical connection.In the power supply system use surge protection device time, two external pins be connected to phase line and On the neutral conductor or ground wire, now, the switch of remote signalling alarm device 20 is not oppressed by external carbuncle, is just being surge protection device Often duty.

According to a detailed description of the invention of the present utility model, when varistor 5 is because of the short-circuit overcurrent on circuit and self longevity The leakage current ordering aging generation causes varistor 5 temperature rise, in this temperature transfer to front electrode 51, promotes temperature-sensitive thereon Element 30 reaches preset temperature threshold value and melts, and as shown in figure 11, flexible lamp pole piece 6a will by the elastic stress effect of stage clip 3 Electrode welding end 6b launches back rapidly in through hole 4a, and continues to launch to the direction away from front electrode 51, final float electrode The switch of remote signalling alarm device 20 is caused compressing and is obstructed static by sheet 6a end, promotes its on off state to change, so Just send the remote signalling signal of telecommunication of surge protection device shielding failure.Now, foot is defined between through hole 4a and electrode welding end 6b Enough big dielectric strengths, have thoroughly completely cut off the electrical connection between tripping electrode 6 and front electrode 51.

According to a detailed description of the invention of the present utility model, when by the transient surges overvoltage of tripping electrode 6, overcurrent or Short circuit overcurrent is when exceeding preset threshold value, thereon cut-off the 6c moment vaporization that fuses and causes flexible lamp pole piece 6a and electrode Welding ends 6b separates, as shown in figure 12, flexible lamp pole piece 6a by the elastic stress effect of stage clip 3 to away from front electrode 51 Direction launch, final flexible lamp pole piece 6a end the switch of remote signalling alarm device 20 is caused compressing and be obstructed static, promote Its on off state changes, and thus sends the remote signalling signal of telecommunication of surge protection device shielding failure.Now, electrode welding end Define sufficiently large dielectric strength between 6b and flexible lamp pole piece 6a, thoroughly completely cut off flexible lamp pole piece 6a and front electrode 51 Between electrical connection.

Embodiment 4:

The another embodiment of the surge protection device of the quick disjunction of a kind of anti-arc of the present utility model.This embodiment have with The major part similar structure of assembly and usage in embodiment 1, differ primarily in that inner shell different with the structure of preventing arc ejector 4 with And the duty indicating mode of surge protection device is different.

As shown in figure 13, preventing arc ejector 4 is the box like structure with cavity, and its cavity both sides are respectively provided with a spring groove 42, Preventing arc ejector 4 antetheca is provided with the through hole 4a that power pole welding ends 6b stretches out, and preventing arc ejector 4 is additionally provided with steam vent 4b. Instruction device 10 is a baffle arrangement, and its design is in preventing arc ejector 4 side, and preventing arc ejector 4 opposite side extends an energy Placing the wing arm 41 of spring, remote signalling alarm device 20 is a projection, and its design is at the end of wing arm 41.At inner shell 1 first Be designed with a remote signalling breach 16 on the bottom surface of cavity 1a, the first cavity 1a is provided with at 2 limited block 17 and one can put Put the electrode baffle plate 18 of spring.

As shown in figure 14, second stage clip 3b two ends are separately fixed on electrode baffle plate 18 and wing arm 41, preventing arc ejector 4 by limited block 17 displacement until touching front electrode 51, the second stage clip 3b is compressive state.Two the first stage clip 3a Being individually positioned in two spring grooves 42, it is interior until electrode welding end 6b stretches out through hole that tripping electrode 6 inserts preventing arc ejector 4 4a and slotted eye 51a, flexible lamp pole piece 6a two the first stage clip 3a of compressing make it be compressive state, the now bullet of the first stage clip 3a Property stress ratio the second stage clip 3b's is big.Electrode welding end 6b is electrically connected with front electrode 51 soldering formation by temperature-sensitive element 30. When using surge protection device in the power supply system, two external pins are connected on phase line and the neutral conductor or ground wire, this Time, remote signalling alarm device 20 close off remote signalling breach 16, and instruction device 10 is in the first end 1c of inner shell 1 outer wall, indicating window 2a is corresponding with the second end 1d of inner shell 1 outer wall for mouth, is the normal operating conditions of surge protection device.

According to a detailed description of the invention of the present utility model, when varistor 5 is because of the short-circuit overcurrent on circuit and self longevity The leakage current ordering aging generation causes varistor 5 temperature rise, in this temperature transfer to front electrode 51, promotes temperature-sensitive thereon Element 30 reaches preset temperature threshold value and melts, and as shown in figure 15, flexible lamp pole piece 6a is by the elastic stress of the first stage clip 3a Electrode welding end 6b is launched rapidly and goes back on defense in arc ejector 4 by effect, and preventing arc ejector 4 is by the elasticity of the second stage clip 3b simultaneously Stress effect is launched to the direction away from front electrode 51, and final remote signalling alarm device 20 staggers with remote signalling breach 16, instruction dress Put 10 move to the second end 1d and be obstructed static, this completes a mechanical Indication of Losing Efficacy.Now, through hole 4a with It is respectively formed sufficiently large dielectric strength between electrode welding end 6b and between front electrode 51 and through hole 4a, has thoroughly completely cut off de- Electrical connection between button electrode 6 and front electrode 51.

According to a detailed description of the invention of the present utility model, when by the transient surges overvoltage of tripping electrode 6, overcurrent or Short circuit overcurrent is when exceeding preset threshold value, thereon cut-off the 6c moment vaporization that fuses and causes flexible lamp pole piece 6a and electrode Welding ends 6b separates, and as shown in figure 16, flexible lamp pole piece 6a and preventing arc ejector 4 are respectively by the first stage clip 3a and second pressure The elastic stress effect of spring 3b is launched to the direction away from front electrode 51 simultaneously, final remote signalling alarm device 20 and remote signalling breach 16 stagger, and instruction device 10 moves to the second end 1d and is obstructed static, this completes a mechanical Indication of Losing Efficacy. Now, it is respectively formed sufficiently large insulation between electrode welding end 6b and through hole 4a and between through hole 4a and flexible lamp pole piece 6a Intensity, has thoroughly completely cut off the electrical connection between flexible lamp pole piece 6a and front electrode 51.

Preferably, instruction a kind of eye-catching color of device 10 outer surface can be given, such as red.When instruction device 10 from When first end 1c moves to the second end 1d, from indication window 2a it is observed that color changes, thus represent varistor 5 Shielding failure；Meanwhile, if user utilizes remote signalling alarm device 20 to trigger opening through remote signalling breach 16 on mounting plate Closing, staggering with remote signalling breach 16 with the remote signalling alarm device 20 oppressing the button of switch when originally close off remote signalling breach 16, The button no longer making switch suffers oppression, then the on off state switched changes immediately, thus sends surge protection device protection and lose The remote signalling signal of telecommunication of effect.

Embodiment 5:

As shown in figure 17, it is the alternative of a kind of tripping electrode 6.Now flexible lamp pole piece 6a, electrode welding end 6b and Cut-off the different parts that a 6c is same alloy.The cross-sectional area at a 6c is cut-off to guarantee when passing through tripping electrode for limiting Transient surges overvoltage, overcurrent or the short circuit overcurrent of 6 can disconnect at a 6c cut-offfing when exceeding its threshold value, cut-offs position 6c is designed to impression, also has breach to limit the length cut-offfing a 6c on the copper sheet cut-offfing near a 6c.

Feature described in the various embodiments described above or feature combination can individualism, or can with the feature in other embodiments or Feature combination be combined with each other, and those skilled in the art can use moment to launch separation hiding tripping electrode according to this utility model And in the case of using metal material to realize the utility model creation that short circuit overcurrent cut-offs function, above-described embodiment is made kind Plant amendment or change the embodiment other, being all belonging to protection domain of the present utility model.

Claims (10)

1. a surge protection device for the quick disjunction of anti-arc, including:

Preventing arc assembly, including preventing arc ejector (4) and flexible member (3)；

Voltage-sensitive assembly, including at least one voltage sensitive element (5)；

Responding to switch assembly, including temperature-sensitive element (30), front electrode (51) and tripping electrode (6)；Described tripping electrode (6) by flexible lamp pole piece (6a), electrode welding end (6b) and cut-off position (6c) formed electrical connection constituted；

Electrode lead-out pins, including flexible conductor (7), the first electrode lead-out pins (8) and the second electrode lead-out pins (9)；

Housing, including inner shell (1) and enclosing cover (2)；

Described inner shell (1) forms the first cavity (1a) and the second cavity (1b) with described enclosing cover (2) when engaging, described preventing arc assembly and described responding to switch assembly are arranged on described first cavity (1a), and described voltage sensitive element (5) is arranged in described second cavity (1b)；

Described responding to switch assembly is normally closed switch when normal operating conditions, and wherein said temperature-sensitive element (30) is in series with described voltage-sensitive assembly to be electrically connected and has close thermal coupling；Described temperature-sensitive element (30) reaches fusing during preset fusion temperature, because the elastic stress effect of described flexible member (3) promotes described tripping electrode (6) to separate with described front electrode (51), in wherein tripping electrode (6) quickly launches separation and is hidden in described preventing arc ejector (4), preventing arc ejector (4) is launched to the direction away from front electrode (51) by the elastic stress effect of flexible member (3) simultaneously, prevents the electric arc formation electrical breakdown initiation short circuit overload that tripping electrode (6) moment produces when launching separation；

Described enclosing cover (2) is provided with indication window (2a); when responding to switch assembly duty by normally closed be changed into normally opened; instruction device on surge protection device is moved displacement, for its from normal operating conditions different change being can be observed from indication window.

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 1, it is characterised in that:

When described cut-offs the transient surges overvoltage that position (6c) is passed through, when overcurrent or short circuit overcurrent exceed its preset threshold value, cut-offfing the fusing vaporization of position (6c) moment makes described flexible lamp pole piece (6a) and described electrode welding end (6b) separate, the most described preventing arc ejector (4) and flexible lamp pole piece (6a) are quickly launched to the direction away from described front electrode (51) by the elastic stress effect of described flexible member (3), in wherein flexible lamp pole piece (6a) is hidden in preventing arc ejector (4), the electric arc produced when preventing moment from fusing and launch separation forms electrical breakdown and causes short circuit overload；

Described voltage sensitive element (5) tow sides are provided with metal electrode film, described front electrode (51) is located on one of them metal electrode film, it is reached in described first cavity (1a) by described second cavity (1b), another metal electrode film is provided with backplate (52), and it is in described second cavity (1b)；

Described flexible member (3) is made up of the first elastic component (3a) and the second elastic component (3b), described first elastic component (3a) is located on described preventing arc ejector (4), and described second elastic component (3b) is located on described first cavity (1a)；

Described the first cavity (1a) is provided with slot (14), and described second cavity (1b) is provided with draw-in groove (15)；Described first electrode lead-out pins (8) enters the first cavity (1a) by described slot (14), and described second electrode lead-out pins (9) enters the second cavity (1b) by described draw-in groove (15)；The two ends of described flexible conductor (7) electrically connect with described flexible lamp pole piece (6a) and the first electrode lead-out pins inner (8b) composition by the way of metal alloy solder soldering or spot welding respectively, and described backplate (52) electrically connects with the second electrode lead-out pins inner (9b) composition by the way of metal alloy solder soldering；First electrode lead-out pins outer end (8a) and the second electrode lead-out pins outer end (9a) are stretched out and are become external pin outside described inner shell (1).

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 2, it is characterised in that:

Described front electrode (51) is provided with slotted eye (51a)；

Described tripping electrode (6) is hidden in described preventing arc ejector (4), and described flexible lamp pole piece (6a) thereon is biased by described first elastic component (3a)；

Described preventing arc ejector (4) is biased by described second elastic component (3b).

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 3, it is characterised in that:

Described preventing arc ejector (4) front end is provided with through hole (4a), is the passage that stretches out of described electrode welding end (6b)；When described preventing arc ejector (4) touches on described first cavity (1a) with described front electrode (51), described through hole (4a) is corresponding with the position of described slotted eye (51a)；Described preventing arc ejector (4) is provided with steam vent (4b), in described tripping electrode (6) is placed on preventing arc ejector (4), when described electrode welding end (6b) stretches out described through hole (4a), described in cut-off position (6c) corresponding with the position of described steam vent (4b).

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 4; it is characterized in that: described electrode welding end (6b) stretches out described through hole (4a) and described slotted eye (51a), it is electrically connected with described front electrode (51) soldering composition by temperature-sensitive element (30).

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 5, it is characterized in that: described electrode welding end (6b) and described front electrode (51) because of described temperature-sensitive element (30) reach preset fusion temperature fusing cause launch separate time, described tripping electrode (6) is hidden in being launched back described preventing arc ejector (4) by the elastic stress effect of described first elastic component (3a), preventing arc ejector (4) is launched to the direction away from front electrode (51) by the elastic stress effect of described second elastic component (3b) simultaneously.

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 5, it is characterized in that: described tripping electrode (6) is because of transient surges overvoltage, when overcurrent or short circuit overcurrent exceed preset threshold value, cut-offfing the fusing vaporization of position (6c) moment described in thereon causes described flexible lamp pole piece (6a) and described electrode welding end (6b) to separate, flexible lamp pole piece (6a) is launched to the direction away from electrode welding end (6b) by the elastic stress effect of described first elastic component (3a) simultaneously, described preventing arc ejector (4) is launched to the direction away from described front electrode (51) by the elastic stress effect of described second elastic component (3b), in wherein flexible lamp pole piece (6a) is hidden in preventing arc ejector (4).

8. according to the surge protection device of the quick disjunction of a kind of anti-arc described in claim 6 or 7, it is characterised in that:

The surge protection device of the quick disjunction of described anti-arc also includes the instruction device (10) indicating this surge protection device state and indicates the remote signalling alarm device (20) of this surge protection device state；

Described instruction device (10) is electrically to indicate device or mechanical indication means.

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 8, it is characterised in that:

Described temperature-sensitive element (30) is meltable metal alloy solder or conducting polymer；

Described position (6c) of cut-offfing is the metal alloy compositions of instant vaporization after a kind of fusing.

The surge protection device of the quick disjunction of a kind of anti-arc the most according to claim 9, it is characterised in that:

Described voltage sensitive element (5) uses piezoresistor type sensing element or electric discharge tubular type sensing element or discharging gap formula sensing element.