CN1357154A

CN1357154A - Fuse switch

Info

Publication number: CN1357154A
Application number: CN00808849.7A
Authority: CN
Inventors: A·特蒂克
Original assignee: MOLLE AUTOMATION SYSTEM KG
Current assignee: MOLLE AUTOMATION SYSTEM KG
Priority date: 1999-04-20
Filing date: 2000-04-20
Publication date: 2002-07-03
Anticipated expiration: 2020-04-20
Also published as: PL194064B1; EP1173872A1; SK14792001A3; AU3945800A; ATA70299A; CN100362611C; TNSN00084A1; IL146058A0; IL146058A; EP1173872B1; CZ302064B6; ATE235102T1; DE50001496D1; PL350457A1; AU762695B2; WO2000063940A1; CZ20013734A3; MY122714A; AT412927B

Abstract

The invention relates to a fuse switch comprising an insulating housing (1) in which two power conducting housing contacts (14) are fixed. Said switch further comprises a switch slider (22) that is also made of an insulating material and that is displaceably or pivotally guided between a switch-on position (Fig. 3 or Fig. 12) and an switch-off or replace position (Fig. 2 or Fig. 11) in the insulating housing (1), said switch slider receiving a fuse cartridge (20) whose end contact caps (21) (Fig. 3 or Fig. 12) are directly placed on the fixed housing contacts (14) in the switch-on position and are separated from the fixed housing contacts (14) in the switch-off or replace position (Fig. 2 or Fig. 11). Said switch also comprises a carriage (24) displaceably mounted in the switch slider (22) and holding the fuse cartridge (20), said carriage having a lug (27) engaging in a gate (28) mounted in the insulating housing (1). Said gate (28) is shaped in such a way that when the carriage (24) is displaced or pivoted, the latter is displaced at a distance such in relation to the switch slider (22) that the fuse cartridge (20) projects above the switch slider (22) in certain sections.

Description

Fuse switch

The present invention relates to a kind of fuse switch, it comprises an insulation crust and an operation slide plate made from insulating material equally.In this insulation crust, fixedly installed the shell contact of two conductions, be used for this operation slide plate of clamping cartridge fuse then can or change and slide between the position or rotate at an on-position and open position.In on-position, the terminal contacts cover of cartridge fuse directly is close on the fixing shell contact, and in open position or replacing position, then separates with the shell contact of fixing.

Fuse switch is used for controlling a cartridge fuse that is connected in the through-flow lead, so that monitor the interior electric current of this lead with this cartridge fuse, and when surpassing the peak of regulation, by the fusing that is positioned at the fuse of managing electric current is cut-off.

In the various known structural shape of up to now fuse switch, there is such problem mostly: inconvenient near cartridge fuse when the operation slide plate is positioned at open position or changes the position, so take off bad or the good cartridge fuse of packing into has difficulties.

The objective of the invention is to propose a kind of above-mentioned fuse switch, this switch has overcome above-mentioned problem, and in the open position or replacing position of operation slide plate, convenient near cartridge fuse, so that take off it with hand.

According to the present invention, but this purpose realizes by a slides carriage that is contained in clamping cartridge fuse in this operation slide plate, this balladeur train has a pin, this pin is engaged in the chute that is provided with on the insulation crust, this chute is made such shape, promptly when the operation slide plate moved or rotates, it is far away like this that this balladeur train can make this slide plate move, so that one section one section ground of cartridge fuse stretches out this operation slide plate.

Cartridge fuse stretches out one section available hand of this slide plate to be held well, thus can a cartridge fuse successfully from this operation slide plate take off or this operation slide plate of packing into.Acting in conjunction by this pin and this chute, in the mobile or rotating process of operation slide plate, cartridge fuse reaches a position that convenience is approaching automatically, and operating personnel need not take any relevant step, carries out inevitably moving or rotating and just operate slide plate.

In a kind of scheme of the present invention, at least one section moving direction or rotation direction that departs to operate slide plate of this chute.

Like this, balladeur train of the present invention moves and just can reach reliable especially.

According to a kind of particularly advantageous structural shape of the present invention, this chute can have two sections: first section is extended in the direction of the mobile or rotation direction of operation slide plate, and second section is then departed from moving or rotation direction of operation slide plate.

In this structural shape, as long as above-mentioned pin is positioned at first section of chute, cartridge fuse does not just move with respect to the operation slide plate.The most handy its longitudinal axis of shell contact is arranged in mobile or the rotation direction.When this arrangement of shell contact, when first section of chute is positioned at such position, be that above-mentioned pin passes through this first section immediately after leaving on-position, cartridge fuse just can be pulled out from the shell contact with the shortest stroke, thereby has avoided cartridge fuse to cause the friction of the unnecessary wearing and tearing of shell contact on the shell contact.

In the improvement project of this structural shape, two sections of chute all extend straight, and second section with the operation slide plate moving direction an angle is arranged, this angle circle is preferably 45 ° between 30 ° and 60 °.

Like this, this chute just have one that be convenient to especially make and can satisfy the structure of the object of the invention.

In a kind of particularly advantageous structural shape of the present invention,, on the operation slide plate, be provided with one and comprise two signal circuits that connect contact in order to show the fault of the cartridge fuse of packing into.In the on-state of operation slide plate, each connects contact and is connected with a terminal contacts cover of cartridge fuse respectively.According to this structural shape, at least fixing a contact chip on the terminal contacts cover that is close to cartridge fuse on the balladeur train, this contact chip has and stretches out this balladeur train and at the on-position inner close fitting of slide plate one section of connecting on the contact at this signal circuit.

This contact chip also can be imagined the connection contact with a signal circuit that constitutes as sliding contact, its advantage is, this contact chip is used for being connected with one contact and sets up be electrically connected one section in the process that cartridge fuse inserts or pulls out and do not rub on other elements at fuse switch in the process that balladeur train shifts out, thereby both avoided the wearing and tearing of the sliding contact that this friction causes, also avoided the wearing and tearing of sliding contact along switch element switch element that friction causes.

In another scheme of this structural shape, the connection contact that is close to the signal circuit on this contact chip is made of the joint line of an element of this signal circuit.

Owing to saved an individual component that constitutes connecting terminal, so the element expense of signal circuit can keep lower.

Another problem that above-mentioned fuse switch exists is that in known up to now structural shape, the operation slide plate all promptly moves or rotates between on-position and open position or replacing position without any resistance serially.Like this, can cause the terminal contacts cover of cartridge fuse to draw back or leave from the shell contact lentamente owing to operate slowly moving or rotating of slide plate.Like this, the circuit of cartridge fuse protection also just slowly cuts off, and when slowly cutting off, can produce big contact resistance between shell contact and terminal contacts cover, also may produce electric arc between said elements.These two kinds of phenomenons all can cause serious localized heating, thereby may cause the damage and/or the destruction of fuse switch.

Another object of the present invention is to propose the problems referred to above that various measures avoid the terminal contacts cover of cartridge fuse slowly to pull out from the shell contact reliably.

According to the present invention, this purpose connects by a snap close and realizes, this snap close connects the operation slide plate is fixed in the shell in its on-position with the shape ways of connecting.

When its on-position moved or turns to open position or changes the position, this snap close connected above-mentioned moving movement or tightening force of rotational motion acting in opposition at the operation slide plate.So,, must when the motion beginning, just on the operation slide plate, act on a sizable power in order to carry out this moving or rotational motion truly.In this case, if surpassed the tightening force that snap close connects, an average-sized person's operating personnel this power of setting up that can not descend again suddenly then.Exactly, this power of setting up causes rotating or the beginning suddenly of moving movement, moves rapidly or rotates thereby cause operating slide plate.The terminal contacts cover that has so also just guaranteed fuse tube separates from the shell contact suddenly, thereby has avoided the problem that exists in prior art effectively.

Because cartridge fuse separates rapidly with the enforceable of shell contact, thus also can cut-off big electric current and not damage fuse switch with fuse switch of the present invention, so fuse switch of the present invention can be used as on-load switch and uses.

According to a kind of particularly advantageous structural shape of the present invention, this snap close connect comprise at least one be fixed on the operation slide plate the snap close plush copper in the shell and at least one are arranged in the shell or the operation slide plate on groove, in the on-position of operation slide plate, this snap close plush copper buckles in this groove.

This snap close connects and can make especially simply, and with its simple structure and reliable especially.

In another scheme of the present invention, the snap close plush copper is arranged on first free end of a leaf spring, and this leaf spring is fixed on the operation slide plate or in the shell with its other end.

The snap close connection that constitutes in this way has sufficiently high tightening force and satisfies purpose of the present invention, and need not to require this tightening force big to such the rigidly fixing of snap close plush copper of for example making with non-elastic material.

Describe in detail below in conjunction with particularly advantageous structural shapes more shown in the drawings.Accompanying drawing is represented:

Fig. 1 a has the oblique view of the fuse switch of the present invention of an operation slide plate 22 that is positioned at its on-position;

Fig. 1 b has an oblique view of fuse switch of the present invention that is positioned at its open position or changes the operation slide plate 22 of position;

Fig. 2 has taken off the oblique view of Fig. 1 fuse switch of a half-shells 3, and wherein its operation slide plate 22 is positioned at open position or changes the position;

Fig. 3 has taken off a half-shells 3 and has taken off the oblique view of the fuse switch of illumination cover, and at this moment its operation slide plate 22 is positioned at on-position;

Fig. 4 a, b shell contact 14 and the oblique view of fixing the bus 93 on it;

Free end 16 shell contact 14 of Fig. 5 is pressed on the oblique view of the U-shaped spring 17 on the terminal contacts cover 21;

The oblique view that the operation slide plate 22 of fuse switch shown in Fig. 6 Fig. 1-3 is independent;

Fig. 7 a-c inserts the oblique view that Fig. 6 operates the different structure type of the balladeur train 24 in the slide plate 22 for one kind, and cartridge fuse 20 is not shown among the figure;

Fig. 8 Fig. 2, the independent oblique view of a half-shells 2 of fuse switch shown in 3;

Fig. 9 Fig. 2, the independent oblique view of a half-shells 3 of fuse switch shown in 3;

The end view of the another kind of structural shape of fuse switch when Figure 10 a, b open a half-shells 3 in part, wherein, the operation slide plate 22 among Figure 10 a is positioned at on-position, and the operation slide plate 22 among Figure 10 b then is positioned at and disconnects or the replacing position;

The oblique view of another structural shape of fuse switch when Figure 11 opens a half-shells 3 in part;

The identical view of the fuse switch that Figure 12 is shown in Figure 11 is wherein operated slide plate 22 and is positioned at on-position;

Figure 13 is a kind of to be used for showing the oblique view of signal of telecommunication circuit 53 of the transient fault of the cartridge fuse 20 that is arranged in fuse switch;

Figure 14 is close to first and connects oblique view on the contact 54, that be fixed on the contact chip 40 on the balladeur train 24;

The winding diagram of the signal circuit 53 that Figure 15 is shown in Figure 13.

Fig. 1 a, the fuse switch of the present invention shown in the b has a shell 1, and this shell is made up of two half-

shells

2,3, and for example screw or rivet interfix this two half-shells with method of attachment commonly used.

In preceding vertical wall 5, shell 1 has first hole 6, and first joint line of the electric lead that is monitored can be introduced in the shell 1 by this hole, is provided with a corresponding hole 8 of second joint line of the lead that is monitored in back vertical wall 7 (seeing Fig. 1 b, 2,3).

In addition, front and

back end wall

5,7 has second hole 6 ', 8 ', and these two holes are used for introducing the joint line of the neutral line.

As from Fig. 2 and 3 as can be seen, in the

hole

6,6 ', 8,8 ' back has a screw clamp 9 to be used for clamping the naked end of connector lug respectively.These screw clamps can constitute by arbitrary known mode, and screw clamp 9 shown in the drawings then for example makes the screw clamp of so-called elevation type.This screw clamp comprises a framework 90, and this frame is installed in the outer casing groove 94, and can move in 3 the vertical direction with respect to Fig. 2, and is provided with screw thread in its cross tube 91.In this screw thread, be screwed into a fillister head screw 92.Pass framework 90 with the bus 93 of very leading the best copper one-tenth of material, the lead that these bus 93 connections are connected with screw clamp 9 and other electric devices of fuse switch.The point of fillister head screw 92 is positioned on the bus 93 (seeing Figure 11,12), thus at fillister head screw 92 along being screwed into direction when turning, framework 90 rises, that is its sheer pole 95 moves on the bus 93.The naked end of lead like this, to be connected inserts between the sheer pole 95 of bus 93 and framework 90 and is clamped in when tightening fillister head screw 92 between these two elements.

Be positioned at Fig. 2, the outside of the base plate 10 of the shell 1 of 3 bottoms is provided with a dovetail groove 11, and the front side of this groove is defined by a quick-acting fastening 12, and the operation ring 13 of this securing member then stretches out from the front bulkhead 5 of shell 1 forward.Quick-acting fastening 12 can carry out guiding movement with respect to Fig. 2 in a cavity of base plate 10 in 3 the horizontal direction.Can be installed in fuse switch of the present invention on the commercially available mounting bracket with hood-shaped profile with this structure.

The joint line of the lead of supervision overcurrent is connected and is positioned at Fig. 2, on the binding post 9 on 3 tops.The bus 93 that is positioned at this binding post 9 is connected with the shell contact of fixing 14, and these shell contacts are then made Mume flower contact (referring to Fig. 4 a, b) also with very leading preferably copper one-tenth of material.The following brace 15 of these shell contacts 14 embeds in the groove 19 of first half-shells 2, thus shell contact 14 be fixed on the shell 1 shown in the position.

For conducting element directly is fixed on two half-

shells

2,3 in this way, shell 1 usefulness insulating material for example plastics is made.

The free end 16 of shell contact 14 is clamped between each terminal contacts cover 21 of cartridge fuse 20.For free end 16 being pressed on the terminal contacts cover 21 with enough big pressure, be provided with some U-shaped springs 17 (also referring to Fig. 5), these springs block shell contact 14 and their free end 16 are pressed on the terminal contacts cover 21.Shell contact 14 is provided with embossing 18, these embossing the arm clamping of spring 17 therebetween, spring 17 just no longer produces with respect to shell contact 14 and slides like this.

Be provided with a block operations slide plate 22 and come clamping cartridge fuse 20.In the embodiment of Fig. 2 and 3, operation slide plate 22 make drawer-like and can be shell 1 in an on-position (Fig. 3) and one cut-off lead between position or the replacing position (Fig. 2) mobile.Guiding is by guide plate 23, and 23 ' realizes, they and two half-

shells

2,3 constitute one, and its side 220,221 of operation slide plate 22 usefulness is close on this guide plate.As shell 1, operation slide plate 22 is also made of plastic.

According to the present invention, cartridge fuse 20 does not directly come clamping by operation slide plate 22, exactly, is provided with a balladeur train 24 specially for this.This balladeur train 24 has the clamping device of cartridge fuse 20, and in the embodiment of Fig. 2-9, this clamping device is (referring to Fig. 7 a-c) that a hole 240 by balladeur train 24 constitutes.

As shown in Figure 2,240 in hole is arranged on the mid portion that cartridge fuse 20 usefulness pottery is made, and two terminal contacts covers of cartridge fuse 20 then expose.Right-hand terminal contacts cover 21 of Fig. 2 is positioned at balladeur train 24 outsides fully, and the terminal contacts cover 21 of Fig. 2 left then is arranged in a hole 241 of balladeur train 24.

Balladeur train 24 be bearing in the operation slide plate 22 in and removable.In the embodiment of Fig. 2-9, such supporting is to realize by a groove 222 that is provided with on operation slide plate 22, and a plate 242 that constitutes one with balladeur train 24 is engaged in this groove.Like this, balladeur train 24 just can along among Fig. 2 with the direction shown in the double-head arrow 25 with respect to operation slide plate 22 parallel moving, operation slide plate 22 itself then is supported in the shell 1 and can moves along the direction of double-head arrow 26.

Operation slide plate 22 moves to open position or changes position (Fig. 2) and carry out with hand from its on-position (Fig. 3).In this disconnection or replacing position, cartridge fuse 20 is taken off or inserts this lead from protected lead.As shown in Figure 3, in on-position, the terminal contacts cover 21 of cartridge fuse 20 is positioned on the height of shell contact 14, and these shell contacts resemble to be clamped terminal contacts cover 21 pliers and be close on these terminal contacts covers.This forcipate clamping of terminal contacts cover 21 why may, be that aforementioned that works is free approaching because these terminal contacts covers resemble.

At open position or when changing the position and pulling out operation slide plate 22 (Fig. 2), when balladeur train 24 rested on the height of shell contact 14, cartridge fuse 20 just was arranged in operation slide plate 22, thereby can not and be difficult near cartridge fuse it is taken off.

According to the present invention, this problem is to solve like this: carry out above-mentionedly when mobile at operation slide plate 22, balladeur train 24 is automatically along moving in the direction of double-head arrow 25.Balladeur train this moves and to have caused cartridge fuse 20 to disconnect when changing the position (Fig. 2) that operation slide plate 22 is relatively moved is far away like this moving to from on-position (Fig. 3), thereby makes cartridge fuse 20 stretch out operation slide plate 22 piecemeal.Like this, cartridge fuse 20 just can shift out by the side 221 of operation slide plate 22, this side is provided with a corresponding groove 223, and locate available hand at this and catch can be free approaching a section and cartridge fuse pulled out of cartridge fuse 20 from hole 240, or with in another cartridge fuse 20 patchholes 240.

After inserting a new cartridge fuse 20, operation slide plate 22 is moved back into on-position (Fig. 3), so balladeur train 24 moves along other direction, the terminal contacts cover 21 of cartridge fuse 20 is got back to again in the height of shell contact 14.

According to the present invention, above-mentioned the moving that is connected the balladeur train 24 that moves of operation slide plate 22 realized with following manner:

One has constituted a pin 27 on balladeur train 24, and this pin is engaged in the chute 28 that is arranged on the insulation crust 1.In the embodiment of Fig. 2-9, these chute 28 processing (see figure 8) in the broad side walls 29 of a half-shells 2.The width of this groove is a bit larger tham the diameter of pin 27, so this pin can slide in groove 28 with very little gap.For the midfeather 224 of pin 27 engageable operation slide plates 22, this midfeather has a corresponding groove 225.Above-mentioned midfeather 224 has the required groove 222 of balladeur train 24 guiding.

Chute 28 is made such shape, promptly at operation slide plate 22 when the double-head arrow direction moves, this chute can allow pin 27 move, thereby causes that balladeur train 24 carries out above-mentioned moving along the direction of double-head arrow 25.

According to the particularly advantageous embodiment of Fig. 8, first section 280 moving direction (double-head arrow 26) along operation slide plate 22 of chute 28 extends, so as long as pin 28 is arranged in this first section 280, balladeur train 24 just can not move with respect to operation slide plate 22.Be right after second section moving direction (double-head arrow 26) that then departs to operate slide plate 22 of first section 280 chute 28.

From this structure of chute 28 as can be known, when operation slide plate 22 moved, as long as cartridge fuse 20 is positioned at the scope of shell contact 12, this cartridge fuse just only may carry out parallel mobile, thereby its terminal contacts cover 21 can be pulled out perpendicular to shell contact 14.So avoided on shell contact 14, causing the lateral movement of the cartridge fuse 20 of terminal contacts cover 21 unnecessary frictions fully.

As shown in Figure 8, above-mentioned second section 281 equally also is straightway, but with the moving direction of the operation slide plate of representing with double-head arrow 26 22 one 45 ° angle 30 is arranged.This angle is only represented a possible embodiment for 45 ° certainly.In principle, chute departs from the degree of operation slide plate moving direction for second section 281 can be selected arbitrarily, but must be noted that two following restrictions:

When angle 30 is selected quite little (thereby chute just departs from the moving direction of operating slide plate for second section 281 a little) for use, then balladeur train 24 can only reach very little moving, so little moving may be too little, the purpose that balladeur train moves can not be reached, that is one section purpose of conveniently being caught of cartridge fuse 20 can not be reached.

On the other hand, when sizable angle 30, can produce big sliding friction between pin 27 and chute 28, thereby hinder moving of operation slide plate 22, perhaps it moves and has become problem at least.

Considering under this situation aspect two that the scope of angle 30 between 30 ° and 60 ° is desirable to realizing the objective of the invention is.Make circular shape from first section 280 to second section 281 transition region, like this, pin 27 just can successfully slide along whole chute 28.

Certainly, two section 280 shown in Figure 8,281 straight line not necessarily, if wherein second section curved variation, for example circular arc, parabolic segment or the like equally also can reach moving that the present invention of balladeur train requires.So for this reason, the chute 28 of Gou Chenging also is regarded as scope of the present invention by this way.

The diameter that is arranged on the hole 240 on the balladeur train 24 cooperates with the diameter of wanting clamped cartridge fuse 20, and the diameter of cartridge fuse then is the rated current that depends on cartridge fuse 20.，

So the variation of the work rated current of fuse switch can realize by the cartridge fuse 20 that use has different rated current by simple especially mode.Fuse switch only need carry out very little change to the variation of rated current, that is only gets final product (seeing Fig. 7 a-c) with the various balladeur trains 24 with different holes 240.

In other words, when making the fuse switch of different rated current, it is identical that its most of element is that shell 1, operation slide plate 22 and whole conducting element (binding post 9, bus 93, shell contact 14 or the like) all can make, and has only balladeur train 24 must cooperate the different-diameters of different cartridge fuses 20.

In the embodiment of Fig. 2-9, at operation slide plate 22 when its on-position moves on to its open position, not only to take off cartridge fuse 20,, but also want simultaneously second lead on the binding post 9 below being connected among Fig. 2,3 to be disconnected so that disconnect the lead itself that is monitored from shell contact 14.Such lead that disconnects together is generally the neutral line, and it constitutes a single-phase loop of fuse switch subsequent user with the lead that is monitored.The advantage that disconnects a neutral line simultaneously is to carry out cutting off mutually entirely of following user.

Be provided with bus 96, their first end stretches into down in the binding post 9, and its second end then is positioned in two shell contacts 14.

At Fig. 2, the bottom of the operation slide plate 22 in 3 is provided with a U-lag 226, in this groove, embedded one be similarly U-shaped touch bridge 31.These two ends 32 of touching bridge 31 are positioned at beyond this groove 226 and on second end of on-position inner close fitting at bus 96 of operation slide plate 22.In order to realize this fitting tightly and reach good electrical contact that be provided with a helical compression spring 33 between the two ends 32 of touching bridge 31, it compresses the two ends 32 of touching bridge 31 towards second end of bus 96 with enough big pressure.

As shown in Figure 3, below the upper cover plate 228 of operating slide plate 22, be provided with a signal of telecommunication circuit 53, can demonstrate the transient fault of the cartridge fuse 20 that is arranged in fuse switch with it, thereby change this cartridge fuse.

This signal circuit that illustrates separately in Figure 13 53 has two and connects contact 54,55.In the on-state of operation slide plate 22, each connects

contact

54,55 and all is connected with each terminal contacts cover 21 of cartridge fuse 20.

The very simple signal circuit 53 of this structure is by a resistance 36 and the series circuit that glow lamp 37 is formed, and these two elements all are arranged on the printed circuit board 38.Wherein its longitudinal axis of resistance 36 usefulness extends perpendicular to printed circuit board (PCB) 38, and one root joint line is parallel to resistance 36 bendings.

Fixed a contact chip 40 on balladeur train 24, this contact chip is close to and is positioned at Fig. 2, on the terminal contacts cover 21 of a cartridge fuse 20 that embeds fully of 3 lefts.This contact chip 40 that illustrates separately in Figure 14 has one section 41 that stretches out balladeur train 24, and this section passes the slot cut 244 of balladeur train 24.In the on-position of operation slide plate 22, this section 41 is close to first of signal circuit 53 and connects on the contact 54.With a groove 245 that is arranged in the balladeur train 24 contact chip 40 is fixed on the balladeur train 24, contact chip 40 is engaged in this groove.

First connects contact 54 is made of the joint line of an element of signal circuit 53 in an advantageous manner.Embodiment with reference to the accompanying drawings, this first connection contact 54 is made of the joint line of this resistance 36 that is parallel to contact resistance 36 extensions.

55 of second splicing ears of this signal circuit are made of a helical spring 39, and first end of this spring is connected with glow lamp 37, its second end then from printed circuit board 38 towards balladeur train 24 directions freely stretch out.

When operation slide plate 22 is positioned at its on-position (Fig. 3), one section 41 of contact chip 40 is close on the resistance joint line, and the free external part of helical spring 39 then is close on another terminal contacts cover 21 of cartridge fuse 20.

Its winding diagram of working method best incorporated (Figure 15) of signal circuit 53 illustrates: when cartridge fuse 20 in when work, its terminal contacts 21 short circuits, and two splicing

ears

54,55 of signal circuit are positioned at identical voltage levvl, thereby do not have current flowing in this signal circuit, glow lamp 37 does not work.

When the fuse failure of cartridge fuse 20, signal circuit 53 is connected with the user who is connected later (representing with the R load).Because the resistance of glow lamp 37 is very high, that is bigger more than 1000 times than average load resistance R load, so have only very little electric current to flow through the series circuit of forming by signal circuit 53 and this user.But so little electric current can not make glow lamp 37 light, and can not demonstrate the fault of cartridge fuse 20.

In order to find out lighting of glow lamp 37 from the outside, upper cover plate 228 has a display aperture 229 in the scope of glow lamp 37, and in case of necessity, this display aperture can be with for example plastics or glass sealing of transparent material.

Explanation up to now all be with the operation slide plate 22 moving direction linearly be starting point.But this situation is only represented a kind of preferred embodiment.Moving of operation slide plate 22 can be carried out along an arc orbit fully, this can realize by following plain mode: the sidewall 220 of operation slide plate 22,221 have the variation of isocentric circular arc, while guide plate 23,23 ' also has the variation of circular arc, and these two arc sections have a common mid point.

Here, balladeur train 24 has a base plate (this base plate is arranged on cartridge fuse 20 belows, cannot see and is close on the operation slide plate 22) in Figure 10, and one constitutes sidewall 243 on this base plate.These sidewalls 243 are from Figure 10 a, and the projection plane of b stretches out and cartridge fuse 20 is clipped in the middle.Equally also from Figure 10 a, the guide plate 227 that the projection plane of b stretches out is fixed on the operation slide plate 22.Sidewall 243 can slide along these guide plates 227, thus make balladeur train 24 be bearing in movably cartridge fuse vertically in.

On the sidewall in sidewall 243, one has constituted one and has been parallel to balladeur train base plate plate 246 that extend and that stretch out guide plate 227, and this plate 246 is supporting pin 27.

In this embodiment, the moving direction of operation slide plate 22 not linearly and is not circular arc, shown in double-head arrow 26 '.The balladeur train of the present invention that carries out for the deflection that realizes depending on operation slide plate 22 moves, and must chute 28 at least one section 281 be departed from the yawing moment of operating slide plate 22.

Similar to the embodiment of Fig. 2-9, at Figure 10 a, first section 280 of the chute 28 among the b is extended in the direction of moving direction, and to resemble fully the moving direction be circular arc.Depart from the moving direction of operating slide plate 22 for second section 281, because this section has straightway and a tangent line is arranged on first section 280 arc section.

This shape by chute 28 has reached such purpose: in the open position of operating slide plate 22 or replacing position (Figure 10 b), balladeur train 24 moves far away like this with respect to this slide plate, so that cartridge fuse 20 can stretch out operation slide plate 22 piecemeal.When operation slide plate 22 moves into its on-position (Figure 10 a), cartridge fuse 20 moves in vertically at it, and its terminal contacts cover 21 can in the on-position of operating slide plate 22, be fixed, be to make quincuncial shell contact 14 to block again, shown in Figure 10 a.

In addition, operation slide plate 22 is bearing in producing rotation in the shell 1 is the described up to now translational motion that yaw motion replaces it.Figure 11 and 12 promptly represents this situation about equally also belonging in the scope of the invention.Figure 11 is similar to Fig. 2, the open position of expression operation slide plate 22 or replacing position; Figure 12 is then similar to Fig. 3, the on-position of expression operation slide plate 22.

Point out that at first the fuse switch that illustrates is fully identical with the fuse switch that has only a utmost point shown in Figure 1 here, that is with the structural shape comparison of Fig. 2-9, it is not connected with the lead that is monitored or cut-offs the neutral line.Not compulsory and be alternative characteristics of the present invention so the neutral line this connected together or cut-off.

Operation slide plate 22 is made disk.With Figure 10 a, b is similar, guide plate 23, and 23 ' does in the arc-shaped and constitutes one with one heart on two half-

shells

2,3 with discoidal operation slide plate 22, so that be rotated guiding in shell 1.

Resemble Figure 10 a, b is such, and balladeur train 24 has a base plate (this base plate is at Figure 11, cannot see in 12, be positioned at cartridge fuse 20 belows and be close on the operation slide plate 22), and one has constituted sidewall 243 on this base plate.These sidewalls 243 stretch out and cartridge fuse 20 are clipped in the middle from Figure 11,12 projection plane.Equally also the guide plate 227 that stretches out from Figure 11,12 projection plane is fixed on the operation slide plate 22.These sidewalls 243 can slide along this guide plate 227, thus supporting carriage 24 can make it cartridge fuse 20 vertically in mobile.

Constituted a pin 27 at the balladeur train bearing plate in the downside one of operation slide plate 22, this pin stretches out by hole 225 and is engaged in the chute 28 that is provided with on the broad side walls 29 of a half-shells 2.In this embodiment, the direction of rotation of operation slide plate 22 linearly is not circular arc, as double-head arrow 246 " shown in.

The balladeur train of the present invention that carries out for the deflection that realizes depending on operation slide plate 22 moves, and here also must chute 28 at least one section be departed from the yawing moment of operating slide plate 22.

In Figure 11,12, chute 28 generally speaking is circular arc.Wherein, chute 28 moves with respect to the center of chute 28 with one heart.As clear finding out from Figure 11,12, way of the present invention is again that balladeur train 24 is moved with respect to it when 22 deflections of operation slide plate is far away like this, makes cartridge fuse 20 can stretch out operation slide plate 22 piecemeal.For available hand is operated the deflection of slide plate 22, one has constituted a handle 35 that always stretches out shell 1 on operation slide plate 22.

In the embodiment shown in Figure 10 a, b or Figure 11,12, the fault that a signal circuit 53 shows installed cartridge fuse 20 is set also.This signal circuit is shown in accompanying drawing 10a, the b.With Fig. 2,3 or the signal circuit of Figure 13 different be, two splicing ears here 54,55 promptly are made of pin independent element, this pin stretches out from the projection plane of Figure 10 a, b.In addition, do not have printed circuit board 38, and the element of signal circuit 53 directly be fixed on the operation slide plate 22 on, this signal circuit also is to be in series by glow lamp 37 and resistance 36.

Be with Fig. 2, another difference of 3, fixed two contact chips 40 here on balladeur train 24, they are connected with the terminal contacts cover 21 of a cartridge fuse 20 that inserts fully respectively.Certainly, these two contact chips 40 also can be used among Fig. 2,3 the embodiment, otherwise, at Figure 10 a, during the fuse switch of b, two connect in the

contact

54,55 one also can by a sliding contact for example helical spring 39 constitute.

Another measure that the present invention takes fuse switch is, can adopt the snap close of arbitrary form to couple together in principle operation slide plate 22 is fixed in its on-position in the shell 1 with the shape ways of connecting.

Particularly from Fig. 2 and 3 or Fig. 6 and 8 can find out that this snap close connects and comprises two snap close plush coppers 50 on the sidewall 220,221 that is fixed on operation slide plate 22 on the one hand, comprises the groove 51 in the recessed guide plate 23,23 ' on the other hand again.Snap close plush copper 50 or groove 51 are to locate like this, and promptly in the on-position of operation slide plate 22 (Fig. 3 or Figure 12), snap close plush copper 50 can buckle in the groove 51.

Wherein, snap close plush copper 50 be not be rigidly fixed in the operation slide plate sidewall 220,221 on, exactly, be provided with a plate-shaped springs 52, second end of this spring be fixed on the operation slide plate 22 on, its freely first end then support snap close plush copper 50.Snap close plush copper 50, plate-shaped springs 52 and operation slide plate 22 preferably constitute one, and this is to solve by the simplest such mode in practice, and promptly plate-shaped springs 52 and snap close plush copper 50 constitute on operation slide plate 22 as cast gate.

Snap close plush copper 50 is arranged on an advantage on the plate-shaped springs 52 to be, when operation slide plate 22 moves, be close to guide plate 23,23 ' when going up in snap close plush copper 50, snap close plush copper 50 can be from guide plate 23,23 ' deflection is very little, that is it is very little to depart from these two guide plates, thereby makes snap close plush copper 50 not produce excessive friction on

guide plate

23,23 '.Be obstructed with regard to the motion of having avoided the operation slide plate like this.But snap close plush copper 50 is rigidly fixed in operation to be still on the slide plate 22 fully possible.

The effect that this snap close connects is that operation slide plate 22 is moved into open position or changes tightening force of position reaction from its on-position.Such when mobile when carrying out, must be when moving beginning just on operation slide plate 22 sizable power of effect overcome the tightening force of this snap close connection.

This sizable power causes operating moving of slide plate carries out suddenly, thereby causes cartridge fuse to separate with shell contact 14 suddenly.So just disconnect protected circuit suddenly, under situation about disconnecting suddenly, avoided between cartridge fuse 20 and shell contact 14, producing the big contact resistance of short time reliably, or avoided between said elements, producing electric arc effectively.

When snap close plush copper 50 at guide plate 23,23 ' go up that one constitutes and the sidewall 220,221 of groove 51 recessed operation slide plates 22 in the time, can reach the above-mentioned purpose of snap close connection equally, so this structural shape also belongs to scope of the present invention.The number of snap close plush copper 50 or groove 51 also can be selected arbitrarily, must not be less than a snap close plush copper 50 and a corresponding grooves 51 certainly.

Snap close of the present invention connects the operation slide plate 22 that also can be used for fuse switch and has a as Figure 10, the shape shown in b or Figure 11,12.At this moment can clearly find out from Figure 11,12 with Fig. 2,3 difference: plate-shaped springs 52 is fixing with snap close plush copper 50 shell 1 in, and groove 51 is one formation on operation slide plate 22 then.

Wanting ben be, the snap close of the invention described above connects the existence that is fully with a mobile balladeur train 24 it doesn't matter.So also can be used for fuse switch, above-mentioned snap close connection do not have balladeur train 24 and cartridge fuse 20 directly to be clamped in the situation of operating on the slide plate 22.

Claims

1. fuse switch, comprise shell (1) and an operation slide plate (22) made from insulating material equally that an insulating material is made, in this insulating material housing, fixedly installed the shell contact (14) of two conductions, this operation slide plate that is used for installing cartridge fuse (20) then can or be changed to lead in insulating material housing (1) between the position (Fig. 2 or Figure 11) and move or deflection at an on-position (Fig. 3 or Figure 12) and an open position, in on-position (Fig. 3 or Figure 12), the terminal contacts cover (21) of this cartridge fuse directly is fitted on the fixing shell contact (14), and in open position or replacing position (Fig. 2 or Figure 11), then separate with the shell contact of fixing (14), it is characterized by, one is bearing in operation slide plate (22) and movably, the balladeur train (24) that cartridge fuse (20) in clamping has a pin (27), this pin is engaged in the chute (28) that is arranged on insulating material housing (1), this chute is made such shape, promptly move or during deflection at operation slide plate (22), balladeur train (24) moves far away like this with respect to this operation slide plate, make cartridge fuse (20) stretch out operation slide plate (22) piecemeal.

2. by the fuse switch of claim 1, it is characterized by, the moving direction or the yawing moment of operation slide plate (22) departed from least one section (281) of chute (28).

3. press the fuse switch of claim 2, it is characterized by, chute (28) has two sections (280,281), and extend along the moving direction and the yawing moment of operation slide plate (22) first section (280) wherein, and second section (281) then depart from the moving direction or the yawing moment of operation slide plate (22).

4. press the fuse switch of claim 3, it is characterized by, two sections (280,281) of chute (28) extend straight, and second section (281) have an angle (30) with the moving direction of operating slide plate, the scope of this angle between 30 ° and 60 ° is preferably 45 °.

5. by each fuse switch of claim 1 to 4, comprise one be arranged in operation slide plate (22) and have two splicing ears (54,55) signal circuit (53), this circuit is used for showing the fault of installed cartridge fuse (20), in the on-state of operation slide plate (22), each splicing ear (54,55) all be connected with each terminal contacts cover (21) of cartridge fuse (20), it is characterized by, at least fixing a contact chip (40) on the terminal contacts cover (21) that is close to cartridge fuse (20) on the balladeur train (24), this contact chip has a section (41) of stretching out balladeur train (24), and in the on-position of operation slide plate (22), this section (41) is close to a splicing ear (54 of signal circuit (53), 55) on.

6. by the fuse switch of claim 5, it is characterized by, be close to the joint line formation of the splicing ear (54) of the signal circuit (53) on the contact chip (40) by an element of signal circuit (53).

7. fuse switch, comprise shell (1) and an operation slide plate (22) made from insulating material equally that an insulating material is made, in this insulating material housing, fixedly installed the shell contact (14) of two conductions, this operation slide plate that is used for installing cartridge fuse (20) then can at an on-position (Fig. 3 or Figure 12) and an open position or be changed between the position (Fig. 2 or Figure 11) to lead at insulating material housing (1) and move or deflection, in on-position (Fig. 3 or Figure 12), the terminal contacts cover (21) of this cartridge fuse directly is fitted on the fixing shell contact (14), and in open position or replacing position (Fig. 2 or Figure 11), then separate with the shell contact of fixing (14), it is characterized by, be provided with snap close and connect to come with the shape ways of connecting operation slide plate (22) is fixed in the on-position in its shell.

8. press the fuse switch of claim 7, it is characterized by, this snap close connect comprise at least one be fixed on that operation slide plate (22) is gone up or shell (1) in snap close plush copper (50) and at least one be arranged in the shell (1) or operate groove (51) on the slide plate (22), in the on-position of operation slide plate (22), snap close plush copper (50) buckles in this groove (51).

9. by the fuse switch of claim 8, it is characterized by, snap close plush copper (50) is arranged on first free end of a plate-shaped springs (52), and this plate-shaped springs (52) then is fixed on the operation slide plate (22) with its other end or in the shell (1).