CN203491201U - Safety protection device, breaker, and breaker assembly - Google Patents

Abstract

The utility model provides a safety protection device (3) used for a breaker (2). The breaker (2) is configured to be capable of inserting into a breaker base (1) and the breaker can be electrically connected with the base. The safety protection device (3) comprises a push rod (31), a control profiling structure (32) being supported on the breaker base (1), and a lever structure (33) which can be rotatably installed on the breaker (2). The push rod (31) is configured to be capable of moving to abut with or break away from a tripping mechanism of the breaker (2). The control profiling structure (32) comprises a plurality of function contour segments (321,322,323). The lever structure (33) is provided with a first lever end and a second lever end, wherein the first lever end is connected with the push rod (31), and the second lever end is configured to be capable of slidably abutting with the function contour segments (321,322,323). In a process that the breaker (2) is inserted into the breaker base (1), the second lever end slides on at least one of the function contour segments to push the push rod (31) to abut with the tripping mechanism and stop the tripping mechanism from working. The utility model also provides a breaker and a breaker assembly.

Description

Safety guard, circuit breaker and breaker assembly

Technical field

The utility model relates to field of circuit breakers, relates in particular to safety guard.The utility model also relates to circuit breaker and the breaker assembly with such protection device for installing.

Background technology

Circuit breaker is often referred to the electric current that can close, carry and cut-off under normal loop condition, and can close, in official hour, carry and cut-off the switching device of the electric current under abnormal loop condition (comprising short circuit condition).Circuit breaker is mounted in switch cubicle conventionally, is specifically mounted in the base of plug-in for example, plays current protection effect.At this, plug-in base will first be arranged in switch cubicle equally, and connects with circuit.Thus, at circuit breaker during insertion, must to guarantee that itself is in disjunction state.

A kind of way that prior art adopts is conventionally, when circuit breaker is installed, to cut off higher level's circuit.This way causes circuit at the same level to be all cut off, and has a strong impact on its user and uses.In addition, the alternative or means of supplementing out economy of prior art are, when inserting circuit breaker, by installation personnel, to guarantee that circuit breaker is in open position.But there is potential safety hazard in this.For example, because operating personnel's carelessness makes circuit breaker in on-state, and do not cut off higher level's circuit, easily cause security incident simultaneously.

So the current apparatus and method for inserting safely circuit breaker exist demand.

Summary of the invention

The purpose of this utility model is exactly for for the above-mentioned problems in the prior art, and a kind of safety guard, circuit breaker and breaker assembly are provided.

For this reason, in a scheme of the present utility model, provide a kind of safety guard for circuit breaker, this circuit breaker is configured to can insert in circuit breaker base and with it and is electrically connected to, this safety guard comprises: push rod, is configured to removable with butt or depart from the tripping mechanism of described plug-pull type breaker; Be supported in the control imitated structure on this circuit breaker base, it comprises a plurality of function contour segments; Be rotatably mounted to the lever construction of described plug-pull type breaker, described lever construction has the first lever end and the second lever end, wherein the first lever end connects described push rod, described the second lever end is configured to slidably function contour segment described in butt, wherein, described the second lever end is configured in described function contour segment, at least one, slide with tripping mechanism described in promotion push rod butt and forbid described tripping mechanism work when described circuit breaker inserts circuit breaker base.

By safety guard of the present utility model, it can prevent that circuit breaker from closing a floodgate during insertion effectively.And this safety guard is simple in structure; and by being mounted to respectively the lever construction of circuit breaker and controlling imitated structure; most of structure of this safety guard is adapted to be mounted within circuit breaker, the space in circuit breaker base, thereby when circuit breaker is installed and be all suitable for being afterwards hidden in internal system and do not appear.

According to further preferred feature, this safety guard also comprises for mobile described control imitated structure after inserting at circuit breaker makes it approach the shift mechanism of circuit breaker; With for described circuit breaker is fastened on to the retention mechanism on circuit breaker base.Described control imitated structure is configured to allow described lever construction motion when approaching and be fastened to described circuit breaker also and then described push rod resets, and makes described push rod and tripping mechanism interval one distance.By shift mechanism is set, can allow operating personnel until circuit breaker insert completely and fastening after make push rod depart from tripping mechanism, as release lever, and keep certain safe distance, this provides further safety guarantee.And such arranging allows the while in installment state and operating state, can ensure well the functional of circuit breaker respective action parts.That is, under installment state, safety guard can maximize the combined floodgate that works to forbid tripping mechanism, and in working order, safety guard on normal, the reliable operation of circuit breaker without any impact.

More preferably, also comprise and be placed on described circuit breaker base, for fixing the support plate of described control imitated structure; Wherein, described shift mechanism consists of bolt mechanism together with retention mechanism, and described bolt mechanism comprises fastening bolt and the screwed hole forming in described support plate.Described support plate will have wide in range implication with " fix " of controlling imitated structure, and they can be integrally formed or to pass through suitable clamp structure secured to one another, but between them without relative motion.

Alternatively, circuit breaker is tightened and also makes support plate simultaneously and control imitated structure and fix with respect to circuit breaker and circuit breaker base at circuit breaker base.Preferably, in one embodiment, circuit breaker base is formed with the depression of lateral openings, the screwed hole of at least described support plate is partly arranged in described depression, and the vertical dimension of described depression is greater than the vertical dimension (thickness) of the described screwed hole part of described support plate, and described support plate is configured to be supported in when described circuit breaker inserts in the lower wall of described depression and by described bolt mechanism can be moved and butt described in the upper side wall that caves in, thereby realize support plate and control imitated structure and fix with respect to circuit breaker and circuit breaker base.

By setting like this, operating personnel can realize the conversion of circuit breaker from disarmed state to operating state that can safety closing simply by screw threads for fastening circuit breaker.Install and compare with existing circuit breaker, without increasing workload, and can the clearly indication with state conversion to operating personnel by this screw threads for fastening.

According to further preferred embodiment, described a plurality of function contour segment comprises the first, second, and third function contour segment of sequentially arranging, described the first function contour segment facilitates described the second lever end to slip into described the second function contour segment for insert the initial stage of circuit breaker base at described circuit breaker, described the 3rd function contour segment is configured in the latter stage of described circuit breaker insertion circuit breaker base or afterwards, by the second lever end, makes push rod towards moving away from the direction of tripping mechanism.

Preferably, the function contour segment of controlling imitated structure can configure like this, at the maximum insertion depth of described circuit breaker, the second lever end still with the second function contour segment butt, thereby push rod stops the work of tripping mechanism.Then, by shift mechanism, move described control imitated structure, make the second lever end slip into the 3rd function contour segment, now this push rod is towards the direction motion away from tripping mechanism, and with the spaced apart safe distance of tripping mechanism.

Or, the function contour segment of controlling imitated structure can configure like this, at described circuit breaker, inserts the latter stage of circuit breaker base, and the second lever end slips into the 3rd function contour segment, now this push rod moves towards the direction away from tripping mechanism, but preferably still keeps in touch with tripping mechanism.And, by shift mechanism, move described control imitated structure, make the second lever end further slide or slip into further the 4th function contour segment along the 3rd function contour segment, make push rod towards the direction motion away from tripping mechanism, and with the spaced apart safe distance of tripping mechanism

According to a specific embodiment, described the second contour segment is straight contour segment, described first and the wide section of third round with respect to the second contour segment, be obliquely installed.

Preferably, described control imitated structure is gauge finder, and described a plurality of function contour segments are limited by the lateral edges of gauge finder.

According to a preferred embodiment, this safety guard comprises the elastic component that connects described control imitated structure and described circuit breaker base, and for described control imitated structure is remained on to circuit breaker base, this is conducive to the stable insertion of circuit breaker.

According to a preferred embodiment, this safety guard comprises the back-moving spring being connected with described push rod, for towards away from push rod described in tripping mechanism direction bias voltage.

Preferably, described lever construction has the first bearing pin of the first lever end, and described push rod has the waist hole of receiving described the first bearing pin, and this is conducive to the stable motion of push rod.

More preferably, described lever construction has the second bearing pin in the second lever end, and described the second bearing pin is with function contour segment described in its outer peripheral face butt.

Further preferably, the pin sleeve of pivotable is installed or had to described the second bearing pin pivotly, and the second bearing pin, with the mode butt function contour segment of the contact of rolling, reduces friction, reduces wear thus.

According to the utility model another program, a kind of breaker assembly is provided, it comprises circuit breaker base; Be configured to insert the circuit breaker of this circuit breaker base; With according to safety guard of the present utility model.

According to another scheme of the present utility model, a kind of circuit breaker that is configured to insert circuit breaker base is provided, wherein, described circuit breaker base is provided with the control imitated structure with a plurality of function contour segments, described circuit breaker comprises: have tripping mechanism breaker body, be rotatably mounted to the lever construction of breaker body, and be configured to can butt or depart from the push rod of described tripping mechanism, wherein, described lever construction has the first lever end and the second lever end, wherein the first lever end connects described push rod, described the second lever end is configured to slidably function contour segment described in butt, wherein, when described circuit breaker is configured to insert circuit breaker base and with before it is electrically connected to, described the second lever end is slided with tripping mechanism described in promotion push rod butt and is forbidden described tripping mechanism work on described function contour segment.

Circuit breaker of the present utility model is installed particularly simple, and can when inserting, guarantee operating personnel's safety, and after installing, can be reliably, operating breaker effectively.

A part for other features and advantages of the utility model will be that those skilled in the art are obvious after reading the application, and another part will be described by reference to the accompanying drawings in embodiment below.

Accompanying drawing explanation

Below, describe by reference to the accompanying drawings embodiment of the present utility model in detail, wherein:

Fig. 1 shows according to breaker assembly of the present utility model embodiment, and wherein circuit breaker inserts in circuit breaker base, but is not yet fastenedly connected with it;

Fig. 2 shows breaker assembly embodiment illustrated in fig. 1, and wherein circuit breaker is fastenedly connected in breaker assembly;

Fig. 3 has specifically illustrated according to the exploded perspective view of the embodiment of safety guard of the present utility model;

Fig. 4 shows the sectional view of the safety guard shown in Fig. 3;

Fig. 5 is the partial enlarged drawing of D part in Fig. 4, shows particularly the multibank capability contour segment of controlling imitated structure.

In the utility model, same or analogous Reference numeral represents same or analogous feature or member.

Reference numerals list

1-circuit breaker base; 2-circuit breaker; 3-safety guard; 11-inner chamber; 12-depression; 21-release lever; 22-action bars; 31-push rod; 32-controls imitated structure; 33-lever construction; 34-support plate; 35-lever construction support; 36-fastening bolt; 37-elastic component; 100-breaker assembly; 311-back-moving spring; 312-waist hole; 313-holds inclined-plane; 321-the first function contour segment; 322-the second function contour segment; 323-the 3rd function contour segment; 324-hook portion; 331-the first bearing pin; 332-the second bearing pin; 333-pivot; 341-screwed hole; 342-indicating mechanism; 351-alignment pin; 352-fixing threaded hole; D-part.

Embodiment

For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing embodiment of the present utility model is described.Although it is in order to present execution modes more of the present utility model that accompanying drawing is provided, but accompanying drawing needn't be drawn by the size of specific embodiments or shape, some feature can be exaggerated, removes, office cuts open or illustrates to can better explain disclosure of the present utility model with schematic representation.The phrase occurring in specification " in the accompanying drawings " or similar term needn't be with reference to institute's drawings attached or examples.

Be used to hereinafter describe some directional terminology of accompanying drawing, for example " on ", D score, " left side ", " right side ", " making progress ", " downwards " and other directional terminology, to be understood to reference to the direction described in accompanying drawing, and do not form concrete restriction of the present utility model.In addition, for the directivity of device, describe and will for the usual direction of field of circuit breakers, understand according to those skilled in the art, for example, circuit breaker direction of insertion can be described as " vertical direction ".

As shown in Fig. 1 and 2 is overall, a kind of breaker assembly 100 is provided, it comprises as the circuit breaker base 1 of building block and circuit breaker 2.As is known to persons skilled in the art, this circuit breaker 2 is configured to be inserted in this circuit breaker base 1, and is fastened thereon, to realize necessary circuit breaker function.Continuation is with reference to Fig. 1 and 2, and this circuit breaker base 1 is container-like, has inner chamber 11 that limited by housing, upper end open.This circuit breaker 2 can be any plug-pull type breaker that is, and can there is the known suitable components that circuit breaker can have, as contact system, arc quenching system, operating mechanism, tripping mechanism, shell etc., but for the utility model object, only show as the release lever 21 of tripping mechanism or its parts and the action bars 22 that is used as operating mechanism or its parts.People will understand, when tripping mechanism is threaded off, operating personnel can not operating operation mechanism, as action bars 22 combined floodgate circuit breakers, and the circuit breaker in "on" position also can be therefore and escape, thereby now circuit breaker is in off-state.This function of circuit breaker is that prior art is known, does not repeat them here.

In conjunction with reference to figure 3-5; according to the embodiment of breaker assembly 100 of the present utility model, also comprise safety guard 3; this safety guard 3 can guarantee that circuit breaker 2 inserts in the process of circuit breaker bases 1 in very simple mode and remain open state; thereby provide safeguard protection, and this safety guard has reduced the possibility that gets involved circuit breaker work as far as possible.This safety guard 3 can comprise that be configured to can butt or depart from the tripping mechanism of described circuit breaker 2, the push rod 31 of release lever 21 in this case; Be maintained at the control imitated structure 32 on this circuit breaker base 1; And the lever construction 33 that is rotatably mounted to described circuit breaker 2.Below by describing respectively this push rod 31, control the miscellaneous part of imitated structure 32 and lever construction 33 and the safety guard 3 associated with them.

Especially as shown in Figure 3, this push rod 31 is elongated rod-shaped, and can be inserted in the hole forming in circuit breaker 2.Wherein, in push rod 31, be formed with hollow parts, for holding and connect a back-moving spring 311, this back-moving spring 311 is for towards away from push rod 31 described in release lever 21 direction bias voltages, thereby push rod 31 can separate a safe distance with release lever 21 under normal conditions, in order to avoid affect the work of circuit breaker.In an illustrated embodiment, back-moving spring 311 is for example extension spring form one end and connects push rod, the standing part of other end connecting breaker 2, but back-moving spring can be also other forms of voltage biasing structure, as long as it is suitable for court away from tripping mechanism direction bias voltage push rod.In the bottom of this push rod 31, be formed with a waist hole 312, by this waist hole 312, push rod 31 can be connected with lever construction 33 operations, as detailed below.At the top of this push rod 31, formed an angled end-face 313, its formed push rod 31 for the part of butt release lever 21 separatably.

Continue with reference to figure 3-5, in order to support the lever construction 33 of safety guard 3, this safety guard 3 also has lever construction support 35.This lever construction support 35 comprises for a plurality of fixing threaded holes 352, is depicted as two, thereby it for example can be fixedly installed to the bottom side (seeing Fig. 1 and 2) of circuit breaker 2.Although install by screw thread in an illustrated embodiment, this support 35 can be fixed to by other means circuit breaker 2, even can be integrally formed with circuit breaker.This support 35 also has outward extending tabular, and lever construction 33 is mounted on the plate portion of this support 35 pivotly by a pivot 333.In an illustrated embodiment, this pivot 333 is integral parts of lever construction 33, and through in the hole forming in the plate portion of support 35, so that pivotable installation, but can be also that lever construction 33 has hole, and pivot is formed on support 35.As shown in the figure, this support 35, especially its plate portion are also formed with alignment pin 351.

As shown in the figure, this lever construction 33 has plate portion triangular in shape, above-mentioned pivot 333 is positioned on a leg-of-mutton summit, and this lever construction limits respectively the first lever end and the second lever end at place, another two summits, and at the first and second lever end places, is formed with suitably respectively the first bearing pin 331 (Fig. 4) and the second bearing pin 332.This first bearing pin 331 is for example to install pivotally or fixing or integrally formed on set square simply around self axis of rotation, and be inserted in the above-mentioned microscler waist hole 312 of push rod 31, thereby it can be in waist hole 312 longitudinally has certain degree of freedom.And the second bearing pin 332 butt that can slide is controlled imitated structure 32, as detailed below.Although in an illustrated embodiment, above-mentioned lever construction 33 has leg-of-mutton basic configuration, but also can, as required by other shape setting, as long as can effectively cooperatively interacting of second lever end (the second bearing pin 332) of control imitated structure 32 and lever construction 33 be effectively passed to push rod 31 by lever construction 33, it be moved suitably.In addition,, although push rod 31 and lever construction 33 coordinate by bearing pin-well format so in an illustrated embodiment, also can adopt other proper fit mode.

As in Figure 3-5, show the control imitated structure 32 that is gauge finder form, this control imitated structure 32 can comprise a plurality of function contour segments, be in an illustrated embodiment three, i.e. the first function contour segment 321, the second function contour segment 322 and the 3rd function contour segment 323, but can expect, more or less function contour segment is set as required.In an illustrated embodiment, described function contour segment is limited by the lateral edges of gauge finder, and for convenience of description, draws abreast the schematic lines of function contour segment in Fig. 5 along contour edge, with this schematic lines, represents contour segment.Especially as shown in Figure 5, described the second contour segment 321 is straight contour segments, described first and the wide section 321,323 of third round with respect to the second contour segment 332, be obliquely installed, present thus the second contour segment 332 than first and the wide section of third round 321,323 " giving prominence to ".Below will be described further combined with its function.

As shown in Figure 4, this control imitated structure 32 also has hook portion 324, one elastic components 37, for example extension spring one end connects this hook portion 324, other end connecting breaker base 1, thereby control imitated structure 32 is bearing on circuit breaker base 1, preferably, is positioned at the inner chamber 11 of circuit breaker base 1.

As shown in the figure, this safety guard 3 can also comprise for this control imitated structure 32 is bearing in to the support plate 34 on circuit breaker base 1.In an illustrated embodiment, this control imitated structure 32 is integrally formed with support plate 34, for example, by sheet metal component, bend out this integratedly and become the tabular control imitated structure 32 of profiling.In addition, this safety guard 3 also can comprise bolt mechanism.As shown in the figure, this bolt mechanism can comprise a plurality of fastening bolts 36, and correspondingly, the appropriate section of this support plate 34, is specifically formed with screwed hole 341 at two ends, and the function of this bolt mechanism will be described hereinafter.With reference to Fig. 1 and 2, this circuit breaker base 1 can be formed with in both sides the depression 12 towards inner opening, screwed hole 341 parts of this support plate 34 are inserted in depression 12, and the height (thickness) of depression is greater than the thickness (highly) of support plate 34, and in the top side of depression 12, be formed with the hole passed for bolt 36, unthreaded hole (not shown) preferably.As shown in the figure, on this support plate 34, can also be formed with indicating mechanism 342, at this, be the arrow form of hollow out, to indicate operating personnel to insert circuit breaker by correct direction.

To describe according to the embodiment of the installation method of breaker assembly 100 of the present utility model below.Shown in Fig. 1 and 2; alternatively by support 35 is fixed to circuit breaker 2; thereby the lever construction of safety guard 3 33 is rotatably mounted to this circuit breaker 2; and push rod 31 is mounted to the first lever end of lever construction 33 and is connected; and insert in the hole of circuit breaker 2, and the spring 311 that is reset is biased into release lever spaced apart.Or, a release unit can be provided, on it, be combined with as described above this circuit breaker 2, lever construction 33 and push rod 31.

Correspondingly, by elastic component 37, control imitated structure 32 and support plate 34 are bearing on circuit breaker base 1, especially screwed hole 341 parts of support plate 34 are maintained at the downside of depression 12.

After this, circuit breaker 2 and lever construction 33 are inserted in circuit breaker base 1, especially by alignment pin 351, with the mode of aliging away from function contour segment one side of gauge finder, lever construction 33 is inserted in the inner chamber 11 of circuit breaker base 1.The starting stage of inserting, effect due to back-moving spring 311, the first bearing pin 331 is maintained at lower position, thereby the second bearing pin 332 than the second function contour segment 332 more by controlling the inside of imitated structure 32, thereby first the second bearing pin 332 contacts the first function contour segment 321, and slide thereon.By being obliquely installed of this first function contour segment 331, it has facilitated the second function contour segment 322 of described the second bearing pin 332 sliding upper " giving prominence to ".Whereby, when further inserting circuit breaker 2, the second bearing pin 332 is by the second function contour segment 332 " outwardly " motion (in figure towards right side), so make the first bearing pin 331 tend to move upward, and the effect that makes thus push rod 31 overcome back-moving spring 331 move upward (also can have relative motion between the first bearing pin 331 and microscler waist hole 312), thus when the second bearing pin 332 slides on the second straight function contour segment 322, push rod 31 remains on position (Fig. 1) upwards, and butt release lever 21, thereby the circuit breaker that makes to close a floodgate (if) thread off and keep opening a sluice gate, and now operating personnel can not operate combined floodgate.In an illustrated embodiment, in circuit breaker 2 complete insertion positions (Fig. 1), the second bearing pin 332 is come the second function contour segment 322 ends, now the lower wall (Fig. 1) of circuit breaker 2 butt depressions 12.

Afterwards, can pass through draw bolt structure, by being screwed into bolt 36, bolt 36 is engaged with the screwed hole 341 of support plate 34, and the biasing force that makes support plate 34 and control imitated structure 32 overcome elastic component 37 moves upward and the upper side wall (Fig. 2) of butt depression 12, now not only realized the fastening of circuit breaker 2 and circuit breaker base 1, the more important thing is by this fastening action to make the second bearing pin 332 slip into the 3rd function contour segment 323 of " inclination ", so can allow the second bearing pin 332 " inwardly " motion, and the first bearing pin 331 moves downward, thereby push rod 31 is towards the direction motion away from release lever 21 the little spacing of interval one safety with it.Now, operating personnel can insert and good free combined floodgate circuit breaker fastening in the situation that completely at circuit breaker, and safety guard 3 now can not be interfered the work of circuit breaker.Visible, this bolt mechanism plays on the one hand for mobile described control imitated structure 32 after inserting at circuit breaker 2 and makes it approach circuit breaker 2, and and then make lever construction 33 and push rod 31 move away the shift function of release lever 21; Also play on the other hand described control imitated structure 32 is fastened on circuit breaker 2 and by circuit breaker 2 and is anchored on the retention mechanism on circuit breaker base.Although bolt mechanism plays above-mentioned two functions in an illustrated embodiment simultaneously, people can expect independently providing Liang Ge mechanism, be that shift mechanism and retention mechanism are realized above-mentioned functions.Although in an illustrated embodiment, by being set, depression 12 top and bottom sidewall provides respectively the supporting of support plate (and and then control imitated structure) and fastening, but also can expect arranging the step be open upwards, as twin-stage step, on circuit breaker is positioned at while inserting completely and tops bar, and now support plate is positioned at and gets out of a predicament or an embarrassing situation, shift mechanism will be limited by circuit breaker self displacement of support plate.

Although in an illustrated embodiment, after circuit breaker 2 inserts, the second bearing pin 332 is stayed the second function contour segment 322, but can so design, make the second bearing pin 332 in the latter stage of inserting, enter the 3rd function contour segment 323, then by the translocation of bolt mechanism, the second bearing pin 332 is further slided in the 3rd function contour segment 323, or slip into further, for example spaced apart with release lever 21 safely after fastening installation to guarantee push rod 31 in the 4th function contour segment (not shown).

Although in an illustrated embodiment; safety guard is described as the device that is independent of circuit breaker base 1 and/or circuit breaker 2 of breaker assembly 100; but people can understand the part or all of function of this safety guard, can be provided by circuit breaker base and/or circuit breaker, and this circuit breaker base and/or the circuit breaker with the utility model design still fall in scope of the present utility model.For example; a circuit breaker is integrated with lever construction and the presumable lever construction support of this safety guard; and be for example applicable to according to the control imitated structure of safety guard of the present utility model or be provided with or be integrated with the circuit breaker base of controlling imitated structure; this circuit breaker falls in the utility model protection range; equally, the circuit breaker base of this integrated control imitated structure falls in scope of the present utility model.Below be only the device example that is combined with the utility model thought, rather than limit, scope of the present utility model is by appended claims and be equal to and limit.

The foregoing is only the schematic embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations, modification and the combination of doing under the prerequisite of design of the present utility model and principle, all should belong to the scope of the utility model protection.

Claims (13)

1. the safety guard for circuit breaker (2) (3), this circuit breaker (2) is configured to insert in circuit breaker base (1) and with it and is electrically connected to, and it is characterized in that, and this safety guard (3) comprising:

Push rod (31), is configured to removable with butt or the tripping mechanism that departs from described circuit breaker (2);

Be supported in the control imitated structure (32) on this circuit breaker base (1), this control imitated structure comprises a plurality of function contour segments (321,322,323);

Be rotatably mounted to the lever construction (33) of described circuit breaker (2), described lever construction (33) has the first lever end and the second lever end, the first lever end connects described push rod (31), and the second lever end is configured to slidably function contour segment described in butt

The second lever end is configured to when described circuit breaker (2) inserts circuit breaker base (1) in described function contour segment to slide at least one promote described in this push rod (31) butt tripping mechanism and forbid described tripping mechanism work.

2. safety guard according to claim 1 (3), is characterized in that, also comprises:

For mobile described control imitated structure (32) after inserting at this circuit breaker (2), make it approach the shift mechanism of this circuit breaker (2); With

For described circuit breaker (2) is fastened on to the retention mechanism on this circuit breaker base (1),

Described control imitated structure (32) is configured to allow described lever construction (33) when approaching and being fastened to described circuit breaker (2) also and then allows described push rod (31) motion, and described push rod (31) and this tripping mechanism are spaced a distance.

3. safety guard according to claim 2 (3), is characterized in that, also comprises and is placed in the upper support plate (34) for fixing described control imitated structure (32) of described circuit breaker base (1);

Described shift mechanism consists of bolt mechanism together with described retention mechanism, the screwed hole (341) that described bolt mechanism comprises fastening bolt (36) and forms in described support plate.

4. safety guard according to claim 3 (3); it is characterized in that; described circuit breaker base (1) has the depression (12) of lateral openings; the screwed hole of at least described support plate (34) is partly arranged in described depression (12); the vertical dimension of described depression (12) is greater than the vertical dimension of the screwed hole part of described support plate (34), described support plate (34) be configured to be supported in when described circuit breaker inserts in the lower wall of described depression (12) and by described bolt mechanism can be moved and butt described in the upper side wall of depression (12).

5. according to safety guard described in any one in claims 1 to 3 (3), it is characterized in that, described a plurality of function contour segment comprise sequentially arrange first, the second and the 3rd function contour segment (321, 322, 323), the first function contour segment (321) facilitates the second lever end to slip into described the second function contour segment (322) for insert the initial stage of this circuit breaker base (1) at described circuit breaker (2), the 3rd function contour segment (323) is configured to insert the latter stage of this circuit breaker base (1) or by the second lever end, make this push rod towards moving away from the direction of this tripping mechanism afterwards at this circuit breaker (2).

6. safety guard according to claim 5 (3), is characterized in that, the second contour segment (321) is straight contour segment, first and the wide section of third round (321,323) with respect to the second contour segment (322), be obliquely installed.

7. according to the safety guard described in any one in claims 1 to 3 (3), it is characterized in that, described control imitated structure (32) is gauge finder, and described a plurality of function contour segments (321,322,323) are limited by the lateral edges of this gauge finder.

8. according to the safety guard described in any one in claims 1 to 3 (3); it is characterized in that, comprise that the elastic component (37) that connects described control imitated structure and described circuit breaker base (1) is for remaining on this circuit breaker base (1) by described control imitated structure (32).

9. according to the safety guard described in any one in claims 1 to 3 (3), it is characterized in that, comprise that the back-moving spring (311) that is connected with described push rod is for towards away from push rod (31) described in the direction bias voltage of this tripping mechanism.

10. safety guard according to claim 1 (3); it is characterized in that; described lever construction (33) has the first bearing pin (331) in the first lever end, and described push rod (31) has the waist hole (321) of receiving described the first bearing pin (331).

11. according to the safety guard described in claim 1 or 10 (3); it is characterized in that; described lever construction (33) has the second bearing pin (332) in the second lever end, and described the second bearing pin (332) is with function contour segment described in its outer peripheral face butt.

12. 1 kinds of breaker assemblies (100), is characterized in that, comprising: circuit breaker base (1); Be configured to insert the circuit breaker (2) of this circuit breaker base (1); With according to the safety guard described in any one in claim 1 to 11 (3).

13. 1 kinds of circuit breakers that are configured to insert circuit breaker base, is characterized in that, described circuit breaker base is provided with the control imitated structure with a plurality of function contour segments, and described circuit breaker comprises:

The breaker body with tripping mechanism,

Be rotatably mounted to the lever construction of this breaker body, and

Being configured to can butt or depart from the push rod of described tripping mechanism,

Wherein said lever construction has the first lever end and the second lever end, and the first lever end connects described push rod, and the second lever end is configured to slidably function contour segment described in butt,

Described circuit breaker is configured to, and when inserting this circuit breaker base and before being electrically connected to this circuit breaker base, the second lever end slides promote described in this push rod butt tripping mechanism and forbid described tripping mechanism work on described function contour segment.

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