CN102891047B - Conductive loop structure of switch device - Google Patents
Conductive loop structure of switch device Download PDFInfo
- Publication number
- CN102891047B CN102891047B CN2012103662847A CN201210366284A CN102891047B CN 102891047 B CN102891047 B CN 102891047B CN 2012103662847 A CN2012103662847 A CN 2012103662847A CN 201210366284 A CN201210366284 A CN 201210366284A CN 102891047 B CN102891047 B CN 102891047B
- Authority
- CN
- China
- Prior art keywords
- guide rod
- binding post
- loop structure
- towards
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Breakers (AREA)
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 reached 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 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 be connected with the second binding post 5 by arrangements of electric connection 61 and for the detection guide rod 62 that detection signal is provided to tripping mechanism 3, tripping mechanism 3 is thermal tripping mechanism or magnetic tripping mechanism, and be connected between operating mechanism 1 and the second binding post 5.Shown in figure, the first binding post 4 is configured to 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 forms, 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 taken the shape of the letter U on the whole, and self is corresponding for the 4th sections 414 and the second sections 412, at operating mechanism 1, order about under movable guide rod 6 actions, fixed contact 8 contacts on making to be fixed on moving contact 7 on movable guide rod 6 and being fixed on the 4th sections 414 that connects guide rod 41 and that position is corresponding with moving contact 7 or separate and use and be switched on or switched off circuit.
along with the expansion year by year of low-voltage power supply system capacity, the breaking capacity of low-voltage circuit breaker is proposed to 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 the conducting loop structure of above-mentioned switching device as shown in Figure 12 often can't meet this requirement, specifically can be understood by Figure 13.
figure 13 is the fundamental diagram of the conducting loop structure of the switching device shown in Figure 12.When the first binding post 4 is introduced current i (arrow in figure means the flow direction of current i), current i just flows to movable guide rod 6 from connecting guide rod 41, due to the 4th sections 414 that connects 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 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 each other in closure state, that is to say, whole contact mechanism or title contact system keep the power circuit on-state, switching device moves and needs to wait for the triggering of operating mechanism 1 as the disjunction of circuit breaker, when breaking down electric current for example during short circuit current, growth along with short circuit current, the electrodynamic repulsion force that movable guide rod 6 is subject to is 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, improve the breaking capacity of switching device 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 411,412,413 and the 4th sections 414 that connect guide rod 41, 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 and is conducive to that movable guide rod 6 is scolded out motion or is conducive to the magnetic field of electric arc to the motion of arc-extinguishing mechanism direction can to produce in movable guide rod 6 and contact arc-extinguishing system region forward magnetic field, opposing magnetic field produces the opposite effect), make current i produce electrodynamic repulsion force on 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, in movable guide rod 6 and generation opposing magnetic field, contact arc-extinguishing system region, current i can produce electronic suction on 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 be 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 movement velocity of movable guide rod 6 and improve the current limiting capacity of switching device as circuit breaker.
in addition, be subject to being bent into this processing technology of U-shaped structure and need to taking the impact of shielding measure to the second sections 412 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 arranged on the top of fixed contact 8, therefore this structure makes switching device can reduce for the space that arc-extinguishing mechanism 2 is installed as circuit breaker inside, weaken the arc extinguishing ability, thereby limited the raising of switching device as the circuit breaker breaking capacity.
figure 14 shows that the another kind of schematic diagram of the conducting loop structure of the switching device in prior art.Connect all conductors on guide rod 41 first, second, third sections 411,412,413 and the 4th sections 414 all in same plane, can reduce the installation site that connects height space that guide rod 41 takies fixed contact 8 that will be corresponding with moving contact 7 and sink (descend or claim and reduce), be that space is saved in the installation of arc-extinguishing mechanism.But, form under this structure 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 in the remainder conductor, electric current produces all produces inhibition to the motion of movable guide rod 6 and electric arc, particularly second, the 4th sections 412, 414 because being subject to the restriction of width spaces, this segment conductor is near the contact district, serious to the forward field weakening in 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 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, connecting guide rod 41 upwards bends and is connected with the first binding post 4, under closing position, in connection guide rod 41, first, second sections 411,412 is 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, after movable guide rod 6 moves to the top that connects guide rod 41, 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 occupy the installing space of arc-extinguishing mechanism, made switching device as very limited as the raising of circuit breaker breaking capacity.
the shortcoming of above-mentioned prior art can be summarized as following two aspects: the one, due to the forward magnetic field in the contact arc-extinguishing system zone of switching device 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 caused 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, due to conducting loop structure in whole switching device to short transverse shared volume relatively large, thereby tied up the due space of arc-extinguishing mechanism, thereby switching device be affected as the arc extinguishing ability of circuit breaker, 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 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 contributes to 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 to switching device; The height space that is conducive to reduce to take in switching device inside uses in order to vacate more space for arc-extinguishing mechanism arc extinguishing ability the final breaking capacity that improves switching device that improves arc-extinguishing mechanism.
task of the present invention completes 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 and 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 to the second binding post near an end of described the second binding post, described movable guide rod by jockey be connected the end of guide rod towards the second binding post and be electrically connected to, described first, between the second binding post, form each other 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 use the electrodynamic repulsion force that makes movable guide rod generation deviate from the direction motion of fixed contact 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 is corresponding to a side of the length direction of the first conductive arm and keep non-contacting parallel state 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 is configured to the location guide chamber, described location guide keeps non-contacting parallel state at the length direction corresponding to the 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 has a 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 to 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 to the second binding post or indirectly is electrically connected to the second binding post towards an end of described the second binding post.
of the present invention a specific embodiment arranged again, the bonding conductor that described arrangements of electric connection is 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 to 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 a detection guide rod, this detection guide rod is fixed on the end of described location guide towards described the second binding post, and is fixedly connected with and makes the location guide realization to be connected with the Indirect Electro between the second binding post by the second binding post and detection guide rod.
in of the present invention and then specific embodiment, described conducting loop structure also includes a detection guide rod, this detection guide rod is fixed on the end of described connection guide rod towards described the second binding post, and with detecting being fixedly connected with of guide rod, makes metal knitted wire realize 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 forms with described the connection between guide rod 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 on described connection guide rod, this seal comprises base portion and is extended the baffle plate formed by the bending of base portion two ends, be equipped with inserted sheet on base portion, inserted sheet and base portion form installation cavity, described location guide matches with installation cavity, offers slotting chamber on base portion, and described fixed contact leans out slotting chamber.
technical scheme provided by the invention is owing to having set up location guide, and make location guide keep non-contacting parallel state with the length direction that is connected guide rod, fixed contact is fixed on to the end of location guide towards the first binding post, an end by location guide towards the second binding post is electrically connected to the second binding post, and make the below of location guide corresponding to the length direction of movable guide rod, thereby making to connect the electric current flow through in 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 simultaneously flow through in location guide also only has forward magnetic field to produce, thereby the electric current flow through on 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.Produce the situation of opposing magnetic field while due to the zone at movable guide rod, moving contact, fixed contact and arc-extinguishing mechanism place, not existing other conductors that electric current is flow through, 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; Due to location guide 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, connection guide rod as conducting element does not affect the installing space of arc-extinguishing mechanism too simultaneously, eliminated and weakened the unfavorable factor of arc-extinguishing mechanism arc extinguishing ability, thereby significantly improved the breaking capacity of switching device as circuit breaker from two aspects.
The accompanying drawing explanation
the schematic diagram of the conducting loop structure that Fig. 1 is switching device of the present invention under "on" position.
the schematic diagram of the conducting loop structure that Fig. 2 is switching device of the present invention under gate-dividing state.
fig. 3 is the arrangements of electric connection shown in Fig. 1 and be connected the schematic diagram that the guide rod Indirect Electro connects and the second binding post directly is electrically connected to location guide.
the schematic diagram that Fig. 4 is the another kind of form that is electrically connected to location guide of movable guide rod.
fig. 5 is the schematic diagram of the another kind of structure of connection guide rod.
the forward schematic diagram that Fig. 6 is Fig. 5.
the schematic diagram that Fig. 7 is seal.
fig. 8 is the first enforcement illustration that is provided with the conducting loop structure of the seal shown in Fig. 7.
fig. 9 is the second enforcement illustration that is provided with the conducting loop structure of the seal shown in Fig. 7.
figure 10 is for connecting another structural representation of guide rod.
figure 11 is application examples schematic diagram of the present invention.
the conducting loop structure figure that Figure 12 is the switching device in prior art.
the fundamental diagram that Figure 13 is Figure 12.
another schematic diagram of the contact system of the conducting loop structure that Figure 14 is the switching device in prior art.
a schematic diagram again of the contact system that Figure 15 is the conducting loop structure of switching device in 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 the restriction to technical scheme to the description of embodiment, anyly according to the present invention design, changes in the form rather than substance all and should be considered as protection scope of the present invention.
embodiment 1:
refer to Fig. 1, Fig. 2, Figure 10 and Figure 11, operating mechanism 1, arc-extinguishing mechanism 2 and the tripping mechanism 3 of switching device have been illustrated in Figure 11, because structure, mounting means (being installed in housing) and function and the relation each other of operating mechanism 1, arc-extinguishing mechanism 2 and tripping mechanism 3 belongs to known technology, therefore the applicant no longer is elaborated, wherein, tripping mechanism 3 can be both thermal tripping mechanism, can be also 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, due to the effect that this connection guide rod 41 is being taken in fact conducting element, therefore also can be called conducting element or conducting rod.In the present embodiment, connect between guide rod 41 and the first binding post 4 and form the step 42 that an inclination is arranged, make the first binding post 4 by the step 42 of this inclination and be connected a gradient of formation between guide rod 41, 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 415,416 and the first binding post 4 are configured to 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 is configured to location guide chamber 417, this location guide chamber 417 is not sealed towards an end of the second binding post 5, 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 the end of movable guide rod 6 towards the first binding post 4, and the position on movable guide rod 6 towards under (take the current icon location status as example), 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 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 the length direction corresponding to location guide chamber 417 and the first conductive arm 415 and the non-contacting parallel state of the second conductive arm 416 maintenance.Aforesaid fixed contact 8 is fixed on location guide 9 towards an end of the first binding post 4 and towards a upper side, 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 to.
as shown in Figure 1, galvanic circle also includes a detection guide rod 62, these detection guide rod 62 use screws 621 are fixed on the end of aforesaid location guide 9 towards 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, due to the second binding post 5, with to detect guide rod 62 fixing, so location guide 9 is configured to or claims to show as indirectly electrical connection between an end of the second binding post 5 and the second binding post 5.
again, due 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 to a side of movable guide rod 6, and the other end is electrically connected to the first conductive arm 415, one end of another one metal wire braided wire in the pair of metal braided wire is electrically connected to the opposite side of movable guide rod 6, and the other end is electrically connected to the second conductive arm 416.
the thickness of first, second conductive arm 415,416 of the aspect ratio of aforesaid location guide 9 is little, and the thickness of first, second conductive arm 415,416 is identical and equal in length.
in switching device, current flowing i(Fig. 1 and Fig. 2 show) time, the current opposite in direction flow through in the sense of current flow through in location guide 9 and movable guide rod 6, please refer to the applicant and be illustrated in the arrow in Fig. 1 and Fig. 2, arrow means the flow direction of current i, the current i flow through in 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.As Fig. 1 shows, the current i on movable guide rod 6 produces and makes the electrodynamic repulsion force of movable guide rod 6 to the direction motion of leaving location guide 9 in described forward magnetic field.Equally, in switching device during current flowing i, current opposite in direction as flowing through in the sense of current flow through in the first conductive arm 415 of the connection guide rod 41 of conducting element and the second conductive arm 416 and movable guide rod 6, connect the current i flow through in guide rod 41 and produce forward magnetic field at movable guide rod 6 and contact arc-extinguishing system region.And then show as Fig. 1, but the current i on moving-conductor 6 produces and makes the electrodynamic repulsion force of movable guide rod 6 to the direction motion of leaving location guide 9 in this forward magnetic field.Due to location guide 9 be connected guide rod 41 in the electric current that flows through all produce forward magnetic field, compare prior art as in the second sections 412 in Figure 12 and Figure 14 second, the 4th sections 412, 414 weaken forward magnetic field thereby can produce 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 switching device as the movable guide rod 6 of circuit breaker and the forward magnetic field in the contact arc-extinguishing system region, increased the actuating force to movable guide rod 6, shortened the break-time of short circuit current, improved the current limiting capacity of circuit breaker.Because location guide 9 shows straight structure without bending, 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, connect guide rod 41 and equally also do not affect the installing space of arc-extinguishing mechanism 2, 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) 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 through location guide 9, detection guide rod 62, flow to the second binding post 5.Under this structure, connecting guide rod 41, wire braid wire and location guide 9 is all 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 to 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 speed of being extinguished by the cutting of the arc extinguishing grid pieces of arc-extinguishing mechanism 2 entered, reduce the energy of short circuit current to the circuit breaker input, improve the breaking capacity of circuit breaker.
as Figure 11, in the present invention, because location guide 9 does not need directly to be connected with the first binding post 4 after prior art (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 parallel with location guide 9 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 to movable guide rod 6 and connect between guide rod 41 by the mode of welding.
embodiment 2:
refer to Fig. 3, in the present embodiment, the detection guide rod of galvanic circle 62 use screws 621 are fixed on and connect the end of guide rod 41 towards the second binding post 5, more particularly be fixed on the common end towards the second binding post 5 of first, second conductive arm 415,416.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 to 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:
refer to Fig. 4, this figure has illustrated that (due to embodiment 1 employing is the metal wire knitted wire to the bonding conductor that arrangements of electric connection 61 is a rigidity, 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 bearing pin 63 hub setting rotationally 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 between guide rod 41 and apply suitable contact force, 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:
refer to 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, due to the first conductive arm 415 only being 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:
refer to Fig. 7, in the figure, show for being set to by the seal 43 on the connection guide rod 41 of structure shown in Fig. 1 to Fig. 4, this seal 43 comprises base portion 432 and extends by base portion 432 two ends bendings the baffle plate 433 formed, be equipped with inserted sheet 431 on base portion 432, inserted sheet 431 under the use state towards under, inserted sheet 431 forms 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 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 the first binding post 4, the second binding post 5 both and switching device inside, has strengthened dielectric strength.
embodiment 6:
refer to Fig. 8 and Fig. 9 and in conjunction with Fig. 7, signal from Fig. 8 and 9, the position of female insulation inserted sheet 432 on connection guide rod 41 is positioned at and connects the end of guide rod 41 towards the first binding post 4, and public insulation inserted sheet 431 is positioned at the end of connection guide rod 41 towards the second binding post 5 in the position connected on guide rod 41.All the other are all with the description to embodiment 1.
the applicant it should be noted that: because the connection guide rod 41 disclosed in embodiment 4 only has the first conductive arm 415, therefore need to make adaptations to the structure of the seal 43 in embodiment 5, in order to adapt with it.
in a word, the present invention is by the top description to embodiment, confirm the magnetic field that both can take full advantage of all electric conductors generations in movable guide rod 6 and contact arc-extinguishing system region and strengthened the 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 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 arrange and be intended to realize the conducting loop structure of applicant at the technique effect described in the technique effect hurdle in switching device, 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 and 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 to the second binding post (5) near an end of described the second binding post (5), described movable guide rod (6) passes through arrangements of electric connection (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) between, form each other 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 use the electrodynamic repulsion force that makes movable guide rod (6) generation deviate from the direction motion of fixed contact (8) 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) is corresponding to a side of the length direction of the first conductive arm (415) and keep non-contacting parallel state 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 is configured to location guide chamber (417), described location guide (9) keeps non-contacting parallel state at the length direction corresponding to 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 to 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 to the second binding post (5) or indirectly is electrically connected to 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 for 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 to 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 a detection guide rod (62), this detection guide rod (62) is fixed on the end of described location guide (9) towards described the second binding post (5), and is fixedly connected with and makes location guide (9) realization to be connected with the Indirect Electro between the second binding post (5) by the second binding post (5) and detection guide rod (62).
7.
the conducting loop structure of switching device according to claim 1, it is characterized in that described conducting loop structure also includes a detection guide rod (62), this detection guide rod (62) is fixed on the end of described connection guide rod (41) towards described the second binding post (5), and with detecting being fixedly connected with of guide rod (62), makes metal knitted wire realize 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.
conducting loop structure according to claim 1 or 2 or 3 described switching devices, it is characterized in that described the first binding post (4) and described be connected between guide rod (41) form that a step (42), this step (42) are arranged is that tilt or vertical.
9.
conducting loop structure according to the described switching device of the arbitrary claim of claim 1 to 4, it is characterized in that being equipped with a seal (43) on described connection guide rod (41), this seal (43) comprises base portion (432) and is extended the baffle plate (433) formed by the bending of base portion (432) two ends, be equipped with inserted sheet (431) on base portion (432), inserted sheet (431) forms installation cavity (4311) with base portion (432), described location guide (9) matches with installation cavity (4311), offer slotting chamber (4321) on base portion (432), described fixed contact (8) leans out slotting chamber (4321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103662847A CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103662847A CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891047A CN102891047A (en) | 2013-01-23 |
| CN102891047B true CN102891047B (en) | 2013-12-11 |
Family
ID=47534517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103662847A Active CN102891047B (en) | 2012-09-26 | 2012-09-26 | Conductive loop structure of switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891047B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112447462A (en) * | 2020-12-11 | 2021-03-05 | 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 |
| CN113192789B (en) * | 2021-03-24 | 2023-05-12 | 天津平高智能电气有限公司 | Column 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-09-26 CN CN2012103662847A patent/CN102891047B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891047A (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102891047B (en) | Conductive loop structure of switch device | |
| CN104576175B (en) | High-voltage double-break circuit breaker | |
| CN104321847B (en) | DC circuit circuit-breaker and DC circuit circuit breaking apparatus | |
| CN108140499B (en) | Switching device | |
| CN102592906B (en) | Medium-pressure and high-capacity DC circuit breaker contact terminal system for improving short time endurance capability | |
| US20090321233A1 (en) | Double-breaking contact system for a low voltage circuit breaker, a molded case circuit breaker comprising the double-breaking contact system, and a method for breaking a circuit | |
| CN102646553B (en) | Circuit breaker with arc extinguishing mechanism | |
| CN101625934B (en) | Circuit breaker | |
| CN101421812B (en) | Slot motor and circuit breaker including the same | |
| JP2012138173A (en) | Circuit breaker | |
| CN207199555U (en) | A kind of breaker | |
| CN101625940B (en) | Double-break micro breaker | |
| CN204215989U (en) | A kind of circuit breaker being beneficial to electric arc fast moving and elongation | |
| RU2672852C2 (en) | Circuit breaker with arc extinguishing barrier | |
| US9502195B2 (en) | Switching device | |
| CN114551131A (en) | Direct current arc extinguishing device and motor type direct current switch equipment | |
| CN103000465B (en) | Contact system of novel high-capacity medium-voltage direct current breaker | |
| KR100386629B1 (en) | Are extinguishing device in circuit breaker | |
| CN214898303U (en) | Circuit breaker | |
| CN109494132A (en) | A kind of double-contact breaker of plastic casing | |
| CN209658121U (en) | Air-sweeping type low-voltage arc eliminating device and breaker | |
| CN113314359A (en) | Improved switching device | |
| CN102237230B (en) | Double interrupted protective switching device for monitoring circuit | |
| CN220627721U (en) | Conductive loop structure and circuit breaker | |
| KR200490680Y1 (en) | Arc extinguishing apparatus of molded-case circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |