CN102891047A - Conductive loop structure of switch device - Google Patents
Conductive loop structure of switch device Download PDFInfo
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- CN102891047A CN102891047A CN2012103662847A CN201210366284A CN102891047A CN 102891047 A CN102891047 A CN 102891047A CN 2012103662847 A CN2012103662847 A CN 2012103662847A CN 201210366284 A CN201210366284 A CN 201210366284A CN 102891047 A CN102891047 A CN 102891047A
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Abstract
A conductive loop structure of a switch device belongs to the technical field of a low-voltage electric appliance. The conductive loop structure comprises a first wiring terminal, a second wiring terminal, a movable guide rod, a stationary guide rod and a pair of movable contact and stationary contact, which can be separated and closed, wherein one end of the first wiring terminal extends to provide with a connecting guide rod, and the conductive loop structure is characterized in that the stationary guide rod is in noncontact parallel with the connecting guide rod, the end of the stationary guide rod below the movable rod, which is close to the second wiring terminal, is connected with the second wiring terminal, the movable guide rod is connected with the end of the connecting guide rod, which faces towards the second wiring terminal, under the state that a conducted electric loop is formed between the first wiring terminal and the second wiring terminal, and the current direction flowing by the connecting guide rod is identical to that flowing by the stationary guide rod and opposite to that flowing by the movable guide rod. The conductive loop structure has advantages that the breaking time of the fault current can be shortened, and the current limiting capacity of the switch device can be improved; and an arc extinguishing capacity of an arc extinguishing mechanism and the breaking capacity of the switch device can be improved.
Description
Technical field
The invention belongs to the low voltage electrical apparatus technology field, be specifically related to a kind of conducting loop structure of switching device
Background technology
Above mentioned switching device refers to low voltage switching device; low voltage switching device is essentially a kind of panel switches; that to be generally used for exchanging 50Hz or 60Hz and rated voltage be 1200V and following low-voltage distribution system; and for dc rated voltage 1500V and following low-voltage distribution system; its function is to connect, carry the electric current that reaches under minute deenergizing normal running conditions; also can the regulation circuit non-normal working conditions such as overload, short circuit under the disjunction fault current, play a protective role.
Figure 12 shows that the conducting loop structure figure of the switching device in the prior art, switching device comprises operating mechanism 1, arc-extinguishing mechanism 2 and tripping mechanism 3, conducting loop structure comprises first, the second binding post 4,5 and movable guide rod 6, operating mechanism 1 is positioned at first, the second binding post 4, between 5, arc-extinguishing mechanism 2 is between the first binding post 4 and operating mechanism 1, movable guide rod 6 is between operating mechanism 1 and arc-extinguishing mechanism 2, and by arrangements of electric connection 61 and for providing the detection guide rod 62 of detection signal to be connected with the second binding post 5 to tripping mechanism 3, tripping mechanism 3 is thermal tripping mechanism or magnetic tripping mechanism, and is connected between operating mechanism 1 and the second binding post 5.Shown in figure, the first binding post 4 constitutes connection guide rod 41 towards an end of the second binding post 5, this connects guide rod 41 by first, second, the 3rd sections 411,412, the 413 and the 4th sections 414 consists of, the first sections 411 is between the first binding post 4 and the second sections 412, the 3rd sections 413 is positioned at second, the 4th sections 412, between 414, wherein: second, the 3rd, the 4th sections 412,413,414 form the structure that takes the shape of the letter U on the whole, and self is corresponding for the 4th sections 414 and the second sections 412, order about under 6 actions of movable guide rod at operating mechanism 1, make the moving contact 7 that is fixed on the movable guide rod 6 and be fixed on the 4th sections 414 that connects guide rod 41 and fixed contact 8 contacts that position and moving contact 7 are corresponding or separate and use and be switched on or switched off circuit.
Along with the year by year expansion of low-voltage power supply system capacity, the breaking capacity of low-voltage circuit breaker is proposed more and more higher requirement, the current limiting capacity by improving circuit breaker or the arc extinguishing ability that improves circuit breaker improve the breaking capacity of circuit breaker usually.But above-mentioned conducting loop structure by switching device shown in Figure 12 often can't satisfy this requirement, specifically can obtain understanding by Figure 13.
Figure 13 is the fundamental diagram of the conducting loop structure of switching device shown in Figure 12.When the first binding post 4 is introduced current i (arrow among the figure represents the flow direction of current i), current i just flows to movable guide rod 6 from connecting guide rod 41, owing to connect the 4th sections 414 of guide rod 41 over against movable guide rod 6, and the current opposite in direction of the flow direction of the current i on the 4th sections 414 and the movable guide rod 6 of process, therefore, movable guide rod 6 produces electrodynamic repulsion force with being connected between the guide rod 41, under little electric current, because electrodynamic repulsion force is less than closing retention force, thereby make moving contact 7 and fixed contact 8 be in each other closure state, that is to say, whole contact mechanism or title contact system keep the power circuit on-state, and the disjunction action of switching device such as circuit breaker needs to wait for the triggering of operating mechanism 1; When breaking down electric current for example during short circuit current, growth along with short circuit current, make electrodynamic repulsion force that movable guide rod 6 is subject to greater than closing retention force, therefore before operating mechanism 1 action, movable guide rod 6 just can carry out the disjunction campaign in advance, the growth of limiting short-circuit current, the breaking capacity of raising switching device such as aforementioned circuit breaker.In the short circuit breaking process, the opening speed of movable guide rod 6 is faster, and the current limiting capacity of circuit breaker is stronger.
But, as seen from Figure 13, in first, second, third sections 411 that connects guide rod 41, the 412,413 and the 4th sections 414, only have the current i of the 4th sections 414 conductings and the current opposite in direction of the movable guide rod 6 of flowing through, (forward magnetic field refers to be conducive to that movable guide rod 6 is scolded out motion or is conducive to electric arc to the magnetic field of arc-extinguishing mechanism direction motion can to produce in movable guide rod 6 and contact arc-extinguishing system region forward magnetic field, the opposing magnetic field then produces the opposite effect), make current i produce electrodynamic repulsion force at movable guide rod 6.The remainder conductor is first, the second sections 411, the magnetic field that the 412 and the 3rd sections 413 produces all can not produce effective driving to the motion of movable guide rod 6 and electric arc, the sense of current of the second sections 412 of particularly flowing through is identical with the sense of current of the movable guide rod 6 of flowing through, produce the opposing magnetic field at movable guide rod 6 and contact arc-extinguishing system region, current i can produce electronic suction at movable guide rod 6, hinder the motion of movable guide rod 6, and after electric arc produces, also can hinder the arc control device that electric arc enters arc-extinguishing mechanism 2, therefore, usually need the electric current of this second sections 412 is shielded.So the structure of the connection guide rod 41 of existing U-shaped structure can not take full advantage of magnetic field that its all electric conductors produce and accelerate the current limiting capacity that the movement velocity of movable guide rod 6 improves switching device such as circuit breaker.
In addition, be subject to being bent into this processing technology of U-shaped structure and the impact that need to take on the second sections 412 shielding measure with connecting guide rod 41, the connection guide rod 41 of above-mentioned U-shaped need to take suitable height space, thereby has raised the installation site of fixed contact 8.Because arc-extinguishing mechanism 2 must be installed in the top of fixed contact 8, therefore this structure can reduce for the space that arc-extinguishing mechanism 2 is installed switching device such as circuit breaker inside, weaken the arc extinguishing ability, thereby limited the raising of switching device such as circuit breaker breaking capacity.
Figure 14 shows that the another kind of schematic diagram of the conducting loop structure of the switching device in the prior art.All conductors that connect on the guide rod 41 are that first, second, third sections 411, the 412,413 and the 4th sections 414 all are in same plane, can reduce the installation site that connects height space that guide rod 41 takies and fixed contact 8 that will be corresponding with moving contact 7 and sink (descend or claim and reduce), be that the space is saved in the installation of arc-extinguishing mechanism.But, under this structure, consist of and connect first of guide rod 41, second, the 3rd sections 411,412, in the 413 and the 4th sections 414, only have the current i of the 3rd sections 413 conductings and the current opposite in direction of the movable guide rod 6 of flowing through, can produce electrodynamic repulsion force to it, the magnetic field that electric current produces in the remainder conductor all produces inhibition to the motion of movable guide rod 6 and electric arc, particularly second, the 4th sections 412,414 because being subjected to the restriction of width spaces, this segment conductor is near contact regions, serious to the forward field weakening in the contact arc-extinguishing system, and be difficult for shielding, reduced the current limiting capacity of circuit breaker.So this structure can not fully improve the breaking capacity of switching device such as circuit breaker.
The circuit-breaker that application for a patent for invention publication No. CN102122592A announces, its contact system structure as shown in figure 15, connection guide rod 41 upwards bending is connected with the first binding post 4, under closing position, connect first, second sections 411 in the guide rod 41,412 above movable guide rod 6, and the direction of the current i of conducting is identical with movable guide rod 6, can produce suction upwards to movable guide rod 6, can accelerate the separating brake motion that movable guide rod 6 makes progress in the short circuit breaking process.But, move to the top of connection guide rod 41 when movable guide rod 6 after, because first, second sections conductor 411,412 can produce downward suction to movable guide rod 6 again, thus hinder movable guide rod 6 to the continuation campaign of opening direction, having reduced switching device is the current limiting capacity of circuit breaker.In addition, under this structure, because first, second sections 411,412 is positioned at fixed contact 8 tops that are fixed on the 3rd sections 413, thereby occupied the installing space of arc-extinguishing mechanism, so that the raising of switching device such as circuit breaker breaking capacity is very limited.
The shortcoming of above-mentioned prior art can be summarized as following two aspects: the one since the contact arc-extinguishing system zone of switching device in forward magnetic field a little less than, therefore affect the actuating force that the direction towards deviating from location guide of movable guide rod is scolded out or claimed to drive effect or actuating speed, thereby when running into the fault current that causes such as the situation by overload, short circuit, movable contact is lost instantaneous agility during to the fault current disjunction, and having a strong impact on switching device is the breaking capacity (current limiting capacity) of circuit breaker; The 2nd, because conducting loop structure is relatively large to the shared volume of short transverse in whole switching device, thereby has tied up the due space of arc-extinguishing mechanism, thereby the arc extinguishing ability of switching device such as circuit breaker is affected, breaking capacity is difficult to improve.
In view of this, the applicant has done more extensive and deep literature search, but be showed no up to now all technology enlightenments of being eliminated aforementioned shortcoming in published patent and the non-patent literature, the applicant has done useful design for this reason, has formed technical scheme described below
Summary of the invention
Task of the present invention is to provide a kind of conducting loop structure of switching device, and this conducting loop structure helps significantly to strengthen the forward magnetic field of movable guide rod and contact arc-extinguishing system region and uses and increase the actuating force of movable guide rod and electric arc and shorten the current limiting capacity that the break-time of fault current is improved switching device; The height space that is conducive to reduce to take in switching device inside is used arc extinguishing ability and the final breaking capacity that improves switching device that improves arc-extinguishing mechanism in order to vacate more space for arc-extinguishing mechanism.
Task of the present invention is finished like this, a kind of conducting loop structure of switching device, comprise the first binding post, the second binding post, movable guide rod, location guide, a pair of separable with closed moving contact and fixed contact, described fixed contact is fixed on location guide near an end of described the first binding post and towards described movable guide rod, described moving contact is fixed on movable guide rod near an end of described the first binding post and corresponding with described fixed contact, movable guide rod has center of rotation towards the other end of the second binding post, movable guide rod can rotate around described center of rotation, the first binding post is extended with the connection guide rod towards an end of the second binding post, be characterised in that described location guide keeps non-contacting parallel arranging with the described guide rod that is connected, and the below corresponding to the length direction of described movable guide rod, described location guide is electrically connected with the second binding post near an end of described the second binding post, described movable guide rod by jockey be connected guide rod and be electrically connected towards an end of the second binding post, described first, form each other between the second binding post under the electric loop state of conducting, the sense of current that connects guide rod of flowing through is identical with the sense of current of the location guide of flowing through, but uses the electrodynamic repulsion force that the direction that movable guide rod produced deviate from fixed contact is moved with the current opposite in direction of the movable guide rod of flowing through.
In a specific embodiment of the present invention, described connection guide rod comprises one first conductive arm, this first conductive arm directly extends formation at described the first binding post towards an end of described the second binding post, described location guide keeps non-contacting parallel state corresponding to a side of the length direction of the first conductive arm and with the first conductive arm, flow through the first conductive arm the sense of current with flow through the current opposite in direction of described movable guide rod, but identical with the sense of current of the location guide of flowing through.
In another specific embodiment of the present invention, described connection guide rod comprises one first conductive arm and one second conductive arm, this first conductive arm and the second conductive arm directly extend formation at described the first binding post towards an end of described the second binding post, first, the second conductive arm keeps parallel at length direction each other, and space each other constitutes the location guide chamber, described location guide is keeping non-contacting parallel state corresponding to the length direction in location guide chamber and with the first conductive arm and the second conductive arm, flow through first, the sense of current of the second conductive arm is identical, and flow through first, the current opposite in direction of the sense of current of the second conductive arm and the described movable guide rod of flowing through, but identical with the sense of current of the location guide of flowing through.
Also have in the specific embodiment of the present invention, described arrangements of electric connection is the metal wire knitted wire, one end of this metal wire knitted wire is connected with the end of described movable guide rod towards described the second binding post, and the other end of this metal wire knitted wire directly is electrically connected or the Indirect Electro connection towards an end of the second binding post with the described guide rod that is connected; Described location guide directly is electrically connected with the second binding post or indirectly is electrically connected with the second binding post towards an end of described the second binding post.
Have again in the specific embodiment of the present invention, described arrangements of electric connection is the bonding conductor of rigidity, described movable guide rod is hinged on by bearing pin on the bonding conductor of rigidity, and the bonding conductor of rigidity is electrically connected towards an end of described the second binding post with the described guide rod that is connected.
More of the present invention and in specific embodiment, described conducting loop structure also includes one and detects guide rod, this detection guide rod is fixed on described location guide towards an end of described the second binding post, and by the second binding post with detect guide rod be fixedly connected with and make location guide realize with the second binding post between Indirect Electro be connected.
In of the present invention and then specific embodiment, described conducting loop structure also includes one and detects guide rod, this detection guide rod is fixed on described connection guide rod towards an end of described the second binding post, and makes metal knitted wire realization with detecting being fixedly connected with of guide rod and be connected the Indirect Electro connection of guide rod between an end of the second binding post by the described other end of described metal wire knitted wire.
Of the present invention again more and in specific embodiment, described the first binding post consists of between the guide rod with described the connection that a step, this step are arranged is that tilt or vertical.
In again of the present invention and then specific embodiment, be equipped with a seal at described connection guide rod, this seal comprises base portion and the baffle plate that is made of base portion two ends bending extension, be equipped with inserted sheet on the base portion, inserted sheet and base portion consist of installation cavity, described location guide matches with installation cavity, offers slotting chamber at base portion, and described fixed contact leans out slotting chamber.
Technical scheme provided by the invention is owing to set up location guide, and make location guide and the length direction that is connected guide rod keep non-contacting parallel state, fixed contact is fixed on location guide towards an end of the first binding post, the end of location guide towards the second binding post is electrically connected with the second binding post, and make location guide corresponding to the below of the length direction of movable guide rod, thereby the electric current that flows through in the connection guide rod is able at movable guide rod, moving contact, the zone at fixed contact and arc-extinguishing mechanism place only has forward magnetic field to produce, the electric current that flows through in the location guide simultaneously also only has forward magnetic field to produce, thereby the electric current that flows through on the movable guide rod produces the electrodynamic repulsion force that movable guide rod is moved towards the direction that deviates from fixed contact in described forward magnetic field.Owing to produce the situation of opposing magnetic field when not existing other conductors that electric current is flow through in the zone at movable guide rod, moving contact, fixed contact and arc-extinguishing mechanism place, therefore can significantly strengthen the actuating force of movable guide rod of the conducting loop structure of switching device, shorten the break-time to fault current, improved the current limiting performance of switching device; Because location guide is without the bending situation, thereby not only reduced the installation site of fixed contact but also do not affected the installing space of arc-extinguishing mechanism, do not affect too simultaneously the installing space of arc-extinguishing mechanism as the connection guide rod of conducting element, eliminate the unfavorable factor of weakening arc-extinguishing mechanism arc extinguishing ability, thereby significantly improved the breaking capacity of switching device such as circuit breaker from two aspects.
Description of drawings
Fig. 1 is that the conducting loop structure of switching device of the present invention is in the schematic diagram under the "on" position.
Fig. 2 is that the conducting loop structure of switching device of the present invention is in the schematic diagram under the gate-dividing state.
Fig. 3 is arrangements of electric connection shown in Figure 1 and the schematic diagram that is connected that the guide rod Indirect Electro connects and the second binding post and location guide directly are electrically connected.
Fig. 4 is the schematic diagram of the another kind of form that is electrically connected with location guide of movable guide rod.
Fig. 5 is the schematic diagram of the another kind of structure of connection guide rod.
Fig. 6 is the forward schematic diagram of Fig. 5.
Fig. 7 is the schematic diagram of seal.
Fig. 8 is the first enforcement illustration that is provided with the conducting loop structure of seal shown in Figure 7.
Fig. 9 is the second enforcement illustration that is provided with the conducting loop structure of seal shown in Figure 7.
Figure 10 is for connecting another structural representation of guide rod.
Figure 11 is application examples schematic diagram of the present invention.
Figure 12 is the conducting loop structure figure of the switching device in the prior art.
Figure 13 is the fundamental diagram of Figure 12.
Figure 14 is another schematic diagram of contact system of the conducting loop structure of the switching device in the prior art.
Figure 15 is an again schematic diagram of the contact system of the conducting loop structure of switching device in the prior art.
Embodiment
In order to make the public can fully understand technical spirit of the present invention and beneficial effect; the applicant will describe in detail the specific embodiment of the present invention below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection scope of the present invention according to the present invention's design.
Embodiment 1:
See also Fig. 1, Fig. 2, Figure 10 and Figure 11, operating mechanism 1, arc-extinguishing mechanism 2 and the tripping mechanism 3 of switching device in Figure 11, have been illustrated, because structure, mounting means (being installed in the housing) and function and the relation each other of operating mechanism 1, arc-extinguishing mechanism 2 and tripping mechanism 3 belong to known technology, therefore the applicant no longer is elaborated, wherein, tripping mechanism 3 both can be thermal tripping mechanism, also can be the magnetic tripping mechanism.
Conducting loop structure comprises first, second binding post 4,5, movable guide rod 6, moving contact 7 and fixed contact 8, the first binding post 4 is extended with connection guide rod 41 towards an end of the second binding post 5, because therefore the effect that this connection guide rod 41 is being taken in fact conducting element also can be called conducting element or conducting rod.In the present embodiment, connect and consist of the step 42 that an inclination is arranged between guide rod 41 and the first binding post 4, make the first binding post 4 by the step 42 of this inclination and be connected gradient of formation between the guide rod 41, namely the level height of the first binding post 4 or title horizontal level are than connecting guide rod 41 height.Certainly, step 42 also can be vertical.Under the use state, the first binding post 4 leans out the housing of switching device, and connects the shell chamber that guide rod 41 is positioned at housing.Again, in the present embodiment, connect guide rod 41 and comprise one first conductive arm 415 and one second conductive arm 416, this first conductive arm 415 and the second conductive arm 416 directly extend formation at the first binding post 4 towards an end of the second binding post 5, that is to say that first, second conductive arm 415, the 416 and first binding post 4 constitute integrative-structure.First, second conductive arm 415,416 keeps parallel at length direction each other, and the space between first, second conductive arm 415,416 constitutes location guide chamber 417, this location guide chamber 417 is not sealed towards an end of the second binding post 5, namely forms opening.Movable guide rod 6(also can claim moving contact) towards an end of the second binding post 5 by arrangements of electric connection 61 be connected the end electrical connection of guide rod 41 towards the second binding post 5.Moving contact 7 is fixed on movable guide rod 6 towards an end of the first binding post 4, and the position on movable guide rod 6 is towards lower (take the current icon location status as example), and namely moving contact 7 is fixed on movable guide rod 6 towards a side that connects guide rod 41.
As one of technical essential of technical scheme provided by the invention, aforementioned conducting loop structure also includes a location guide 9, this location guide 9 is corresponding in the aforesaid location guide chamber 417, and this location guide 9 leans out location guide chamber 417 towards an end of the second binding post 5, that is to say that location guide 9 stretches out connection guide rod 41 towards an end of the second binding post 5.Shown in Fig. 1,2 and 11, location guide 9 is at length direction and the first conductive arm 415 and the non-contacting parallel state of the second conductive arm 416 maintenances corresponding to location guide chamber 417.Aforesaid fixed contact 8 is fixed on location guide 9 towards an end of the first binding post 4 and towards a upper side, and is corresponding with aforesaid moving contact 7.
In the present embodiment, aforesaid arrangements of electric connection 61 is the metal wire knitted wire, one end of this metal wire knitted wire is connected towards an end of the second binding post 5 with movable guide rod 6, and the other end of this metal wire knitted wire be connected the end of guide rod 41 towards the second binding post 5 and directly be electrically connected.
By shown in Figure 1, the galvanic circle also includes one and detects guide rod 62, these detection guide rod 62 usefulness screws 621 are fixed on aforesaid location guide 9 towards an end of the second binding post 5, the second binding post 5 is fixed (being preferably welding) with detection guide rod 62 in the present embodiment, hence one can see that, because the second binding post 5 is with to detect guide rod 62 fixing, so location guide 9 constitutes between an end of the second binding post 5 and the second binding post 5 or claims to show as indirectly electrical connection.
Again, because in the present embodiment, location guide 4 comprises the first conductive arm 415 and the second conductive arm 416, therefore aforesaid jockey 61 is filled the post of by pair of metal silk braided wire, one end of the wherein one metal wire braided wire in this pair of metal silk braided wire is electrically connected with a side of movable guide rod 6, and the other end is electrically connected with the first conductive arm 415, one end of another one metal wire braided wire in the pair of metal braided wire is electrically connected with the opposite side of movable guide rod 6, and the other end is electrically connected with the second conductive arm 416.
First, second conductive arm 415 of the aspect ratio of aforesaid location guide 9,416 thickness are little, and first, second conductive arm 415,416 the identical and equal in length of thickness.
When current flowing i(Fig. 1 and Fig. 2 in the switching device show) time, the current opposite in direction that flows through in the sense of current that flows through in the location guide 9 and the movable guide rod 6, please see the applicant for details and be illustrated in arrow among Fig. 1 and Fig. 2, arrow represents the flow direction of current i, the current i that flows through in the location guide 9 at movable guide rod 6, moving contact 7, fixed contact 8 and arc-extinguishing mechanism 2(hereinafter to be referred as " contact arc-extinguishing system ") region produces forward magnetic field.Show that such as Fig. 1 the current i on the movable guide rod 6 produces and makes movable guide rod 6 to the electrodynamic repulsion force of the direction motion of leaving location guide 9 in described forward magnetic field.Equally, when in the switching device during current flowing i, current opposite in direction as flowing through in the sense of current that flows through in the first conductive arm 415 of the connection guide rod 41 of conducting element and the second conductive arm 416 and the movable guide rod 6 connects the current i that flows through in the guide rod 41 and produces forward magnetic field at movable guide rod 6 and contact arc-extinguishing system region.And then show such as Fig. 1, but the current i on the moving-conductor 6 produces in this forward magnetic field and makes movable guide rod 6 to the electrodynamic repulsion force of the direction motion of leaving location guide 9.Since location guide 9 be connected guide rod 41 in the electric current that flows through all produce forward magnetic field, compare among the second sections 412 among prior art such as Figure 12 and Figure 14 second, the 4th sections 412,414 weaken forward magnetic field thereby can produce the opposing magnetic field, in Figure 15, when movable guide rod 6 moves to first, the second sections 411, behind 412 tops, first, the second sections 411,412 also can produce the opposing magnetic field that hinders movable guide rod 6 motions, therefore, structure of the present invention has significantly strengthened the movable guide rod 6 of switching device such as circuit breaker and the forward magnetic field in the contact arc-extinguishing system region, increased the actuating force to movable guide rod 6, shorten the break-time of short circuit current, improved the current limiting capacity of circuit breaker.Owing to need not bending, location guide 9 shows straight structure, therefore not only reduce the installation site of fixed contact 8 but also do not affected the installing space of arc-extinguishing mechanism 2, simultaneously, connecting guide rod 41 does not equally affect the installing space of arc-extinguishing mechanism 2 yet, eliminate the unfavorable factor of the weakening arc-extinguishing mechanism 2 arc extinguishing abilities in the prior art, thereby significantly improved the breaking capacity as the circuit breaker of switching device category from two aspects.
Please continue to see Fig. 1 and Fig. 2, structure of the present invention under closing position (Fig. 1 shows) namely under "on" position, the conducting order of current i is as follows: the current i that the first binding post 4 is introduced is that aforesaid wire director linear flow is to movable guide rod 6 through connection guide rod 41, the arrangements of electric connection 61 of rigidity, enter moving contact 7 and fixed contact 8, then flow to the second binding post 5 through location guide 9, detection guide rod 62.Under this structure, connecting guide rod 41, wire braid wire and location guide 9 all is the vertical positive direction that passes the paper of current icon location status at movable guide rod 6 with the magnetic field that the contact arc-extinguishing system region produces, all movable guide rod 6 is produced electrodynamic repulsion force upwards, compared with prior art, under this structure, the electrodynamic repulsion force that movable guide rod 6 is subject to increases greatly, can accelerate the movement velocity of movable guide rod 6, electric arc 10 is produced in advance, improve the current limiting capacity of circuit breaker.After electric arc 10 produces, the magnetic field that above electric conductor produces all produces to the magnetic blow-out power of arc quenching system direction motion electric arc 10, the actuating force that electric arc 10 is subject to also strengthens greatly, electric arc 10 be can accelerate and the arc control device of arc-extinguishing mechanism 2 and the speed of being extinguished by the cutting of the arc extinguishing grid pieces of arc-extinguishing mechanism 2 entered, reduce short circuit current to the energy of circuit breaker input, improve the breaking capacity of circuit breaker.
Such as Figure 11, among the present invention, because location guide 9 does not need directly to link to each other with the first binding post 4 after prior art (such as Figure 12,13) is bent into U-shaped, therefore, location guide 9 can be designed as the straight plate structure of planar shaped, can significantly reduce the installation site of fixed contact 8, connect guide rod 41 and location guide 9 parallel and its highly can be identical with location guide 9, therefore can not affect the installing space of arc-extinguishing mechanism 2, eliminate the unfavorable factor that weakens arc quenching system arc extinguishing ability, improved the breaking capacity of circuit breaker.
In the present embodiment, the two ends of aforesaid metal wire knitted wire preferably are connected between movable guide rod 6 and the connection guide rod 41 by the mode of welding.
Embodiment 2:
See also Fig. 3, in the present embodiment, the detection guide rod 62 usefulness screws 621 of galvanic circle are fixed on connection guide rod 41 towards an end of the second binding post 5, more particularly are fixed on first, second conductive arm 415,416 common ends towards the second binding post 5.Aforesaid arrangements of electric connection 61 is that an end of metal wire knitted wire is connected with movable guide rod 6, and the other end is connected with detection guide rod 62, thereby arrangements of electric connection 61 is shown as and the indirectly electrical connection that is connected guide rod 41.And the second binding post 5 directly is fixedly connected with location guide 9, thereby location guide 9 directly is electrically connected with the second binding post 5 towards an end of the second binding post 5.All the other are all with the description to embodiment 1.
Embodiment 3:
See also Fig. 4, this figure has illustrated that arrangements of electric connection 61 is that the bonding conductor of a rigidity (is the metal wire knitted wire because embodiment 1 adopts, therefore can be described as flexible bonding conductor), movable guide rod 6 is hinged on the bonding conductor of this rigidity by bearing pin 63, be that movable guide rod 6 passes through rotationally hub setting of bearing pin 63 on the bonding conductor of this rigidity, and adopt the elastomeric element (not shown) such as stage clip to the bonding conductor of rigidity and connect and apply suitable contact force between the guide rod 41, and the bonding conductor of rigidity is fixed with an end that is connected guide rod 41 unshowned second binding post 5 in Fig. 4 after adding conductive cushion block 64, more particularly with first, the second conductive arm 415,416 ends towards the second binding post 5 are fixedly connected with.All the other are all with the description to embodiment 1.In the present embodiment, the bonding conductor of rigidity can be directly directly fixing with an end that is connected guide rod 41 unshowned second binding post 5 in Fig. 4, and do not add conductive cushion block 64, as long as can realize the bonding conductor and the electrical connection that is connected guide rod 41 of rigidity.
Embodiment 4:
See also Fig. 5 and Fig. 6, be with the difference of embodiment 1: be connected guide rod 41 and only comprise the first conductive arm 415, because the first conductive arm 415 is only arranged, therefore aforesaid arrangements of electric connection 61 only has an one metal wire braided wire.All the other are all with the description to embodiment 1.
Embodiment 5:
See also Fig. 7, in the figure, show be used to being set to the seal 43 to the connection guide rod 41 of structure shown in Figure 4 by Fig. 1, this seal 43 comprises base portion 432 and extends the baffle plate 433 that consists of by base portion 432 two ends bendings, be equipped with inserted sheet 431 on the base portion 432, inserted sheet 431 under the use state towards lower, inserted sheet 431 consists of installation cavity 4311 with base portion 432, location guide 9 matches with installation cavity 4311, make location guide 9, connect between guide rod 41 and movable guide rod 6 threes and realize insulation shielding, offer on the base portion 432 and insert chamber 4321, described fixed contact 8 leans out inserts chamber 4321.Baffle plate 433 has been realized the shielding of first binding post 4, the second binding post 5 both and switching device inside, has strengthened dielectric strength.
Embodiment 6:
See also Fig. 8 and Fig. 9 and in conjunction with Fig. 7, by the signal of Fig. 8 and 9 as can be known, the position of female insulation inserted sheet 432 on connection guide rod 41 is positioned at and connects guide rod 41 towards an end of the first binding post 4, and public insulation inserted sheet 431 is positioned at connection guide rod 41 towards an end of the second binding post 5 in the position that connects on the guide rod 41.All the other are all with the description to embodiment 1.
The applicant need to prove: because the connection guide rod 41 that discloses among the embodiment 4 only has the first conductive arm 415, therefore need to make adaptations to the structure of the seal 43 among the embodiment 5, in order to adapt with it.
In a word, the present invention is by top description to embodiment, confirmed and both can take full advantage of in movable guide rod 6 and the contact arc-extinguishing system region magnetic field that all electric conductors produce and strengthen driving to movable guide rod 6 and electric arc, improved the current limiting capacity as the circuit breaker of switching device category; Can reduce again location guide 9 and the height that is connected guide rod 41, the installation site of fixed contact 8 is significantly reduced, for the space has been vacateed in the installation of arc-extinguishing mechanism 2, thereby improve the arc extinguishing ability of circuit breaker, finally improve the breaking capacity of circuit breaker.
In addition; although only exemplified different several versions of conducting loop structure in the above; but be not subject to the restriction of embodiment; as long as in switching device, arrange and be intended to realize that the applicant at the conducting loop structure of the technique effect described in the technique effect hurdle, all should be considered as the protection range of technical scheme provided by the invention
Claims (9)
1.
A kind of conducting loop structure of switching device, comprise the first binding post (4), the second binding post (5), movable guide rod (6), location guide (9), a pair of separable with closed moving contact (7) and fixed contact (8), described fixed contact (8) is fixed on location guide (9) near an end of described the first binding post (4) and towards described movable guide rod (6), described moving contact (7) is fixed on movable guide rod (6) near an end of described the first binding post (4) and corresponding with described fixed contact (8), movable guide rod (6) has center of rotation towards the other end of the second binding post (5), movable guide rod (6) can rotate around described center of rotation, the first binding post (4) is extended with connection guide rod (41) towards an end of the second binding post (5), it is characterized in that described location guide (9) keeps non-contacting parallel arranging with the described guide rod (41) that is connected, and the below corresponding to the length direction of described movable guide rod (6), described location guide (9) is electrically connected with the second binding post (5) near an end of described the second binding post (5), described movable guide rod (6) passes through jockey (61) and is connected the end electrical connection of guide rod (41) towards the second binding post (5), described first, the second binding post (4,5) form each other between under the electric loop state of conducting, the sense of current that connects guide rod (41) of flowing through is identical with the sense of current of the location guide of flowing through (9), but uses the electrodynamic repulsion force that the direction that movable guide rod (6) produced deviate from fixed contact (8) is moved with the current opposite in direction of the movable guide rod (6) of flowing through.
2.
The conducting loop structure of switching device according to claim 1, it is characterized in that described connection guide rod (41) comprises one first conductive arm (415), this first conductive arm (415) directly extends formation at described the first binding post (4) towards an end of described the second binding post (5), described location guide (9) keeps non-contacting parallel state corresponding to a side of the length direction of the first conductive arm (415) and with the first conductive arm (415), flow through the first conductive arm (415) the sense of current with flow through the current opposite in direction of described movable guide rod (6), but identical with the sense of current of the location guide of flowing through (9).
3.
The conducting loop structure of switching device according to claim 1, it is characterized in that described connection guide rod (41) comprises one first conductive arm (415) and one second conductive arm (416), this first conductive arm (415) and the second conductive arm (416) directly extend formation at described the first binding post (4) towards an end of described the second binding post (5), first, the second conductive arm (415,416) keep parallel at length direction each other, and space each other constitutes location guide chamber (417), described location guide (9) is keeping non-contacting parallel state corresponding to the length direction of location guide chamber (417) and with the first conductive arm (415) and the second conductive arm (416), flow through first, the second conductive arm (415,416) the sense of current is identical, and flow through first, the second conductive arm (415, the current opposite in direction of the sense of current 416) and the described movable guide rod (6) of flowing through, but identical with the sense of current of the location guide of flowing through (9).
4.
The conducting loop structure of switching device according to claim 1, it is characterized in that described arrangements of electric connection (61) is the metal wire knitted wire, one end of this metal wire knitted wire is connected with the end of described movable guide rod (6) towards described the second binding post (5), and the other end of this metal wire knitted wire directly is electrically connected or the Indirect Electro connection towards an end of the second binding post (5) with the described guide rod (41) that is connected; Described location guide (9) directly is electrically connected with the second binding post (5) or indirectly is electrically connected with the second binding post (5) towards an end of described the second binding post (5).
5.
The conducting loop structure of switching device according to claim 4, it is characterized in that described arrangements of electric connection (61) is the bonding conductor of rigidity, described movable guide rod (6) is hinged on the bonding conductor of rigidity by bearing pin (63), and the bonding conductor of rigidity is electrically connected towards an end of described the second binding post (5) with the described guide rod (41) that is connected.
6.
The conducting loop structure of switching device according to claim 1, it is characterized in that described conducting loop structure also includes one and detects guide rod (62), this detection guide rod (62) is fixed on described location guide (9) towards an end of described the second binding post (5), and by the second binding post (5) with detect guide rod (62) be fixedly connected with and make location guide (9) realize with the second binding post (5) between Indirect Electro be connected.
7.
The conducting loop structure of switching device according to claim 1, it is characterized in that described conducting loop structure also includes one and detects guide rod (62), this detection guide rod (62) is fixed on described connection guide rod (41) towards an end of described the second binding post (5), and makes metal knitted wire realization with detecting being fixedly connected with of guide rod (62) and be connected the Indirect Electro connection of guide rod (41) between an end of the second binding post 5 by the described other end of described metal wire knitted wire.
8.
According to claim 1 and 2 or the conducting loop structure of 3 described switching devices, it is characterized in that described the first binding post (4) and described be connected between the guide rod (41) consist of that a step (42), this step (42) are arranged is that tilt or vertical.
9.
According to claim 1 to the conducting loop structure of the described switching device of 4 arbitrary claims, it is characterized in that being equipped with a seal (43) at described connection guide rod (41), this seal (43) comprises base portion (432) and the baffle plate (433) that is extended formation by the bending of base portion (432) two ends, be equipped with inserted sheet (431) on the base portion (432), inserted sheet (431) consists of installation cavity (4311) with base portion (432), described location guide (9) matches with installation cavity (4311), offer slotting chamber (4321) at base portion (432), described fixed contact (8) leans out slotting chamber (4321)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103662847A CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103662847A CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
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| CN102891047A true CN102891047A (en) | 2013-01-23 |
| CN102891047B CN102891047B (en) | 2013-12-11 |
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| CN2012103662847A Active CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN105931928A (en) * | 2016-07-06 | 2016-09-07 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN113192789A (en) * | 2021-03-24 | 2021-07-30 | 天津平高智能电气有限公司 | On-pole isolating switch and wiring terminal thereof |
| WO2022121232A1 (en) * | 2020-12-11 | 2022-06-16 | 西安中熔电气股份有限公司 | Mechanical breaking and fusing combined multi-fracture excitation fuse |
| CN115295970A (en) * | 2022-10-09 | 2022-11-04 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| US11784021B2 (en) | 2020-12-11 | 2023-10-10 | Xi' An Sinofuse Electric Co., Ltd. | Mechanical breaking and fusing combined multi-fracture excitation fuse |
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| GB1496732A (en) * | 1974-05-21 | 1977-12-30 | Hazemeyer Sa | Short-circuit current limiter |
| CN1223741A (en) * | 1996-07-05 | 1999-07-21 | 福基公司 | Electrical circuit breakers |
| CN102064057A (en) * | 2009-11-12 | 2011-05-18 | 徐浩明 | Miniature circuit breaker current limiter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1496732A (en) * | 1974-05-21 | 1977-12-30 | Hazemeyer Sa | Short-circuit current limiter |
| CN1223741A (en) * | 1996-07-05 | 1999-07-21 | 福基公司 | Electrical circuit breakers |
| CN102064057A (en) * | 2009-11-12 | 2011-05-18 | 徐浩明 | Miniature circuit breaker current limiter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN105931928A (en) * | 2016-07-06 | 2016-09-07 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN105914109B (en) * | 2016-07-06 | 2018-09-04 | 上海电科电器科技有限公司 | The galvanic circle of breaker |
| CN105931928B (en) * | 2016-07-06 | 2018-11-09 | 上海电科电器科技有限公司 | The galvanic circle of breaker |
| WO2022121232A1 (en) * | 2020-12-11 | 2022-06-16 | 西安中熔电气股份有限公司 | Mechanical breaking and fusing combined multi-fracture excitation fuse |
| US11784021B2 (en) | 2020-12-11 | 2023-10-10 | Xi' An Sinofuse Electric Co., Ltd. | Mechanical breaking and fusing combined multi-fracture excitation fuse |
| CN113192789A (en) * | 2021-03-24 | 2021-07-30 | 天津平高智能电气有限公司 | On-pole isolating switch and wiring terminal thereof |
| CN115295970A (en) * | 2022-10-09 | 2022-11-04 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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|---|---|
| CN102891047B (en) | 2013-12-11 |
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