CN205657030U - Electromagnetism release and miniature circuit breaker of ability striking - Google Patents
Electromagnetism release and miniature circuit breaker of ability striking Download PDFInfo
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- CN205657030U CN205657030U CN201520787838.XU CN201520787838U CN205657030U CN 205657030 U CN205657030 U CN 205657030U CN 201520787838 U CN201520787838 U CN 201520787838U CN 205657030 U CN205657030 U CN 205657030U
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Abstract
The utility model provides an electromagnetism release and the miniature circuit breaker of ability striking, is including the striking magnetic conduction coil of cover outside the iron core subassembly, striking magnetic conduction coil be a subassembly that connects gradually by wiring board, solenoid and the magnetic conduction static contact that is equipped with the striking structure. Miniature circuit breaker has the electromagnetism release of ability striking. The utility model discloses an electromagnetism release and miniature circuit breaker's striking magnetic conduction coil directly is connected with solenoid by wiring board and magnetic conduction static contact, and through the striking of magnetic conduction static contact, the electromagnetism release need not to set up the support, make simple structure, cost reduction, be convenient for automated processing and assembly, greatly reduced the processing and the assembly degree of difficulty, improved production and assembly efficiency, reduced the point that electromagnetism release electricity is connected, the magnetic conduction static contact takes place the electric arc that the back produced with the short circuit to be introduced to the arc control device of circuit breaker in succession, improves the short -circuit protection performance of circuit breaker.
Description
Technical field
This utility model belongs to Low Voltage Electrical Apparatus, is specifically related to the magnetictrip of a kind of energy striking, is mainly used in miniature circuit breaker.
Background technology
Miniature circuit breaker generally uses magnetictrip to carry out short-circuit protection; when the electric current flow through in the main circuit of breaker control meets or exceeds the short circuit current threshold value of setting; magnetictrip produces trip action, and this trip action touches the tripping mechanism of chopper makes its tripping operation of threading off.When chopper disjunction short circuit current, a large amount of electric arc is there will be between movable contact and stationary contact, constitute the destruction to chopper, destroy for reducing electric arc, generally it is provided with at circuit breaker internal and includes the arc-control device of arc-chutes and arc striking component, arc-chutes make electric arc extinguish rapidly by segmentation and cooling electric arc, and arc striking component (such as arc leading angle) is for being directed to arc-chutes by electric arc.The basic means reducing electric arc destruction mainly has be improve breaking capacity at three: one, it relates to the actuation speed of magnetictrip, and the breaking speed of movable contact and stationary contact, and actuation speed and breaking speed are the fastest, the time that then electric arc exists is the shortest, is the most easily off；Two is to improve striking effect, effectively prevents electric arc from running helter-skelter by and as quickly as possible much more as far as possible electric arc be directed to arc-chutes, improve arc extinguishing efficiency, shorten the quenching time；Three is arc extinguishing ability, and it depends on the concrete structure of arc-chutes.
Existing magnetictrip co-operating member is more, and too much, production difficulty is bigger in processing constraint so that product occurs can not the situation of action message；And by support striking, electric arc needs to jump to support from arc angle so that product short-circuit protection ability is subject to certain restrictions.Arc-control device and magnetictrip such as existing chopper are separate, the parts of arc-control device do not have the function needed for magnetictrip, the parts of magnetictrip do not have the function needed for arc-control device, the number of components of this organization plan being generally used is many and volume big, and the position constraint related to is the most.For this, have the magnetic trip device of a kind of chopper at present and include that the electric protection equipment of this device have employed structure based on arc electrode arm, thus default fixed core and the air gap, but in use find, the field drives mobile core that coil produces is there is and moves insecure problem in this product under conditions of default fixed core and the air gap, particularly in miniature circuit breaker, the short circuit current of coil energy safe bearing load is relatively small, if default fixed core and the air gap, mobile core will be caused to lose translational speed and the stability of work and reliability.Its reason is according to physics principle, the magnetic force driving mobile core to move is a kind of captivation or repulsive force, it is present between mobile core and another magnetic or magnetic conductor object, default another object (such as original fixed core), the essential condition that the most default magnetic force exists, therefore, the existence of its described " magnetive attraction " that produced by coil is exactly uncertain.Obviously; after default fixed core and the air gap; uncertainty and the unstability of the trip action of dynamic iron core can be increased; the trip action that can slow down speed; the program is not applied for miniature circuit breaker; and there is the deficiencies such as process and assemble is difficult, production efficiency is low so that product short-circuit protection ability is subject to certain restrictions.In fact, for miniature circuit breaker, Interruption in order to ensure magnetictrip, such as stability, reliability, add the translational speed of snap-action iron core, i.e. accelerate the actuation speed of magnetictrip, reduce the short circuit current impact failure to coil simultaneously, need its magnetic circuit carries out fine optimization design, including such as static iron core, the air gap, structure that yoke etc. are especially sensitive and mutually restricting relation, because Miniaturization Design and Interruption, there is contradiction in the improvement of arc extinction performance, in addition, the manufacturing and positioning errors of magnetictrip and its Interruption there is also contradiction, a kind of new design that can meet simultaneously improve the requirement threaded off with arc extinction performance and miniaturization it is badly in need of on market.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is provide the magnetictrip of a kind of energy striking being easy to production and reliable operation and use the miniature circuit breaker of this electrical apparatus release, can meet improvement to thread off and arc extinction performance and the requirement of miniaturization, having properly settled existing product can not the problem of action message simultaneously.
For achieving the above object, this utility model have employed following technical scheme.
The magnetictrip of a kind of energy striking, including the striking magnetic conduction coil 1 being enclosed within outside core assembly, described striking magnetic conduction coil 1 is by patch panel 11, solenoid 12 and to be provided with the assembly that the magnetic conduction static contact 13 of arc-striking structure is in turn connected into.
Preferably, described core assembly includes dynamic iron core 2, insulating sleeve 3, reaction spring 4, static iron core 5 and push rod 6；Insulating sleeve 3 is fixing with static iron core 5 to be connected, dynamic iron core 2 is in the cylindrical hole 30 being arranged on insulating sleeve 3 is inserted in insulating sleeve 3 one end, push rod 6 inserts from pilot hole 53 one end of static iron core 5 and moves iron core 2 and fix and be connected, reaction spring 4 is sleeved on the push rod 6 in cylindrical hole 30, and, one end of reaction spring 4 is connected with dynamic iron core 2, and the other end of reaction spring 4 is connected with static iron core 5.
Preferably, described magnetic conduction static contact 13 is provided with arc end 13a, the yoke portion 13b and contact part 13c being provided with arc-striking structure being sequentially connected with.
Preferably, described magnetic conduction static contact 13 uses the sheet material bending of a good conduction good magnetic conduction to make and have arc end 13a, yoke portion 13b and the structure of contact part 13c, wherein said arc end 13a is arranged in region, arc-chutes entry position, described yoke portion 13b is parallel to the axial of solenoid 12, the arc leading angle of V-type is formed between yoke portion 13b and contact part 13c, including the vertical section that be provided with stationary contact 14 vertical with yoke portion 13b and the tilting section that is connected between yoke portion 13b and vertical section, acutangulate between vertical section and tilting section, vertical section becomes circular arc with the outside of tilting section junction.
Preferably, the described patch panel 11 of striking magnetic conduction coil 1, solenoid 12 and magnetic conduction static contact 13 are welded as an assembly by energy storage.
Preferably, described insulating sleeve 3 includes coil mounting post 31, is provided with cylindrical hole 30 in coil mounting post 31, and one end of cylindrical hole 30 realizes static iron core 5 with interference fit face 50 interference fit of static iron core 5 outer surface and is connected with the interference of insulating sleeve 3；Described static iron core 5 outer surface is the interference fit face 50 coordinated with insulating sleeve 3, static iron core 5 axis is provided with spring eye 51 and pilot hole 53, spring eye 51 and the through setting of pilot hole 53, the diameter of spring eye 51 is more than the diameter of pilot hole 53, spring eye 51 forms spring connecting end surface 510 with the end face of pilot hole 53 junction, and in reaction spring 4 is arranged on spring eye 51, one end abuts with spring connecting end surface 510；One end of static iron core 5 is and moves the adhesive end face 52 that iron core 2 coordinates.
Preferably, described push rod 6 is provided with interference fit stomidium 61, anticreep termination 62 and spring stack 63, spring stack 63 one end is provided with anticreep termination 62, the other end is connected with interference fit post, it is provided with in interference fit post and moves the interference fit stomidium 61 that iron core 2 is connected, further, the diameter of described anticreep termination 62 is more than the diameter of the pilot hole 53 on static iron core 5.
Preferably, described dynamic iron core 2 is provided with the axle body 20 that is slidably matched, interference fit axle head 21 and adhesive shaft shoulder face 22；The diameter of interference fit axle head 21 is less than the diameter of the axle body 20 that is slidably matched, and be slidably matched the axle body 20 end face formation adhesive shaft shoulder face 22 with interference fit axle head 21 junction；One end of reaction spring 4 contacts connection with the adhesive shaft shoulder face 22 of dynamic iron core 2, and the other end is connected with the spring connecting end surface 510 in the spring eye 51 of static iron core 5.
Preferably, described magnetic conduction static contact 13 is provided with arc end 13a, yoke portion 13b and contact part 13c being sequentially connected with；The solenoid 12 of described striking magnetic conduction coil 1 is sleeved on insulating sleeve 3, and make a dynamic part for iron core 2 and a part for static iron core 5 be always positioned in the range of length L of this solenoid 12, and the coiler part in the range of described yoke portion 13b and length L of this solenoid 12 is be arranged in parallel, and in the range of making yoke portion 13b be positioned at length L of this solenoid 12.
This utility model additionally provides a kind of miniature circuit breaker, including the operating mechanism 9a being arranged in its housing 8, tripping mechanism 9b, trigger device 9c and arc-control device, it is characterised in that: described chopper also includes the magnetictrip of the energy striking as described in any one in claim 1 to 9；Described magnetictrip also includes rearmounted yoke 7, and rearmounted yoke 7 is after core assembly installation is fixed on housing 8 base plate, more rearmounted yoke 7 is installed on core assembly, and the core assembly of magnetictrip is between rearmounted yoke 7 and housing 8 base plate.
The striking magnetic conduction coil of the magnetictrip of energy of the present utility model striking is directly connected with solenoid 12 by patch panel 11 and magnetic conduction static contact 13, and by magnetic conduction static contact 13 striking, magnetictrip is without arranging support；Simple in construction, cost is not only made to reduce; and it is easy to automatization's processing and assembling; greatly reduce processing and assembly difficulty; improve production and efficiency of assembling; decrease the point of magnetictrip electrical connection; the electric arc that magnetic conduction static contact produces after short circuit being occurred is continually introduced into the arc-control device to chopper, improves the short-circuit protection performance of chopper.nullMagnetictrip of the present utility model，By using core assembly、Rearmounted yoke and the structure of striking magnetic conduction coil，And then employing is arranged on the patch panel 11 on striking magnetic conduction coil、Solenoid 12 and magnetic conduction static contact 13 structure and the arc end 13a being arranged on magnetic conduction static contact 13、Yoke portion 13b and the structure of contact part 13c，Ingenious reasonably process includes such as static iron core、The air gap、Structure that yoke etc. are especially sensitive and mutual restricting relation thereof，Solve Miniaturization Design and Interruption、The contradiction of the improvement of arc extinction performance，The manufacturing and positioning errors of magnetictrip and the contradiction existing for its Interruption are properly settled，It is possible not only to meet improvement thread off and arc extinction performance and the requirement of miniaturization simultaneously，Product short-circuit protection ability is made to be no longer influenced by certain restriction，It is obviously improved product quality，And production difficulty can also be reduced，It is effectively improved production efficiency and reduces manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the integrally-built schematic diagram of magnetictrip of the present utility model.
Fig. 2 is the floor map of the design of part of the striking magnetic conduction coil 1 of the magnetictrip shown in Fig. 1.
Fig. 3 is the integrally-built schematic diagram of the miniature circuit breaker using the magnetictrip shown in Fig. 1, rearmounted yoke 7 not shown in figure.
Fig. 4 is the floor map of the design of part of the insulating sleeve 3 of the magnetictrip shown in Fig. 1.
Fig. 5 is the floor map of the design of part of the static iron core 5 of the magnetictrip shown in Fig. 1.
Fig. 6 is the floor map of the design of part of the push rod 6 of the magnetictrip shown in Fig. 1.
Fig. 7 is the floor map of the design of part of the dynamic iron core 2 of the magnetictrip shown in Fig. 1.
Fig. 8 is the floor map of the design of part of the rearmounted yoke 7 of the magnetictrip shown in Fig. 1.
Fig. 9 is the assembling schematic diagram of the miniature circuit breaker using the magnetictrip of the present utility model shown in Fig. 1.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1 to 9, further illustrates magnetictrip of the present utility model and includes the detailed description of the invention of chopper of this electrical apparatus release.
As it is shown in figure 1, magnetictrip of the present utility model includes the core assembly being made up of dynamic iron core 2, insulating sleeve 3, reaction spring 4, static iron core 5 and push rod 6, there is the striking magnetic conduction coil 1 of the characteristic of conduction, magnetic conduction and striking, and rearmounted yoke 7.Striking magnetic conduction coil 1 includes the patch panel 11 being sequentially connected with, solenoid 12 and is provided with the magnetic conduction static contact 13 of arc-striking structure；The stacking of rearmounted yoke 7 is arranged on core assembly, core assembly is between yoke 7 and housing 8 base plate, the i.e. solenoid 12 of striking magnetic conduction coil 1 is sleeved on the outside of insulating sleeve 3 of core assembly, install after being fixed on the housing 8 of miniature circuit breaker, then be fixed on stacked for rearmounted yoke 7 on core assembly.This utility model magnetictrip has and can the striking magnetic conduction coil 1 of striking and rearmounted yoke 7, patch panel 11 and magnetic conduction static contact 13 directly be connected with solenoid 12, by magnetic conduction static contact 13 striking；Yoke, with separable rearmounted yoke 7 that can be convenient for assembly, is filled on electromagnetic tripping system after magnetictrip loading housing, it is not necessary to arrange support by magnetictrip again；Not only make simple in construction, cost reduce, and be easy to automatization's processing and assembling, greatly reduce processing and assembly difficulty, improve production and efficiency of assembling；Decreasing the point of magnetictrip electrical connection, the electric arc that magnetic conduction static contact produces after short circuit being occurred is continually introduced into the arc-control device to chopper, improves the short-circuit protection performance of chopper simultaneously.
Shown in Fig. 1, magnetictrip of the present utility model includes the core assembly being made up of dynamic iron core 2, insulating sleeve 3, reaction spring 4, static iron core 5 and push rod 6.Dynamic iron core 2, insulating sleeve 3, reaction spring 4, static iron core 5 and push rod 6, before core assembly installation being fixed on the housing 8 of chopper, are assembled into an individual components that will not fall apart by this utility model.I.e. contrast existing loose mail form, during insulating sleeve installation is fixed in the housing of chopper and after process, need individually each part therein dispersion to be installed in the housing of chopper.And core assembly of the present utility model due to be a kind of can the overall individual components participating in assembling circuit breaker, during insulating sleeve 3 installation is fixed in the housing 8 of chopper and after process, all without redispersion, dynamic iron core 2, reaction spring 4, static iron core 5 and the push rod 6 in insulating sleeve 3 is installed.Obviously, the advantage of the program is easy for assembling, and reduces the manufacturing and positioning errors impact on Interruption.
Above-mentioned core assembly is assembled into the implementation of individual components can be had multiple, a kind of preferably mode such as Fig. 1 and combines shown in Fig. 4-7: as described in cylindrical hole 30 (the seeing Fig. 4) interference fit of static iron core 5 and insulating sleeve 3, and coordinate one end that static iron core 5 is fixed on insulating sleeve 3 with this；Push rod 6 is through the pilot hole 53 (seeing Fig. 5) of static iron core 5 in the way of being slidably matched, and one end of push rod 6 extend in cylindrical hole 30, and the other end of push rod 6 is provided with the diameter anticreep termination 62 (seeing Fig. 6) more than pilot hole 53；Dynamic iron core 2 is arranged in the cylindrical hole 30 of insulating sleeve 3 in the way of being slidably matched, and reaction spring 4 is preferably stage clip, and it is sleeved on the push rod 6 in cylindrical hole 30, and one end of reaction spring 4 is connected with dynamic iron core 2, and the other end of reaction spring 4 is connected with static iron core 5；Reaction spring is placed in advance in static iron core 5, one end of dynamic iron core 2 and one end interference fit of the push rod 6 in cylindrical hole 30, this cooperation is connected fixing with push rod 6 for dynamic iron core 2, reaction spring 4 is made to be in the state of a kind of precompressed, and make core assembly become can the overall individual components (seeing Fig. 1) participating in assembling, the dynamic air gap leaving certain distance between iron core 2 and static iron core 5, air gap is in the inside of current coil, and dynamic iron core 2 promotes push rod 6 to move together until contacting with static iron core 5 when moving.
The concrete structure of each part that the implementation of concrete and above-mentioned preferred core assembly matches is as shown in Figures 4 to 7.See Fig. 4, described insulating sleeve 3 includes coil mounting post 31, being provided with cylindrical hole 30 in coil mounting post 31, the inside of cylindrical hole 30 is used for containing dynamic iron core 2 (see Fig. 7), and has slip cooperating relationship between the axle body 20 on cylindrical hole 30 and dynamic iron core 2；One end of cylindrical hole 30 for realizing interference fit with the interference fit face 50 (see Fig. 5) on static iron core 5, is connected with (seeing Fig. 4) interference of insulating sleeve 3 realizing above-mentioned static iron core 5；One end of coil mounting post 31 is provided with yoke joint end 32, and yoke joint end 32 is used for and the left draw-in groove 7b removably clamping on the left plate 72 of the rearmounted yoke 7 shown in Fig. 8.
See Fig. 5, described static iron core 5 outer surface is the interference fit face 50 coordinated with insulating sleeve 3, static iron core 5 axis is provided with the spring eye 51 for containing reaction spring 4 and pilot hole 53, spring eye 51 and the through setting of pilot hole 53, the diameter of spring eye 51 forms spring connecting end surface 510 more than the diameter of pilot hole 53, spring eye 51 with the end face of pilot hole 53 junction；One end of static iron core 5 is and moves the adhesive end face 52 that iron core 2 coordinates, and the outer surface of the other end is the yoke card access surface 54 coordinated with rearmounted yoke 7.Interference fit face 50 is for the right-hand member interference fit with the cylindrical hole 30 (see Fig. 4) of insulating sleeve 3；Adhesive end face 52 is used for and adhesive shaft shoulder face 22 (see Fig. 7) electromagnetic coupled on dynamic iron core 2, i.e. under the magneticaction of solenoid 12, adhesive end face 52 and face 22 adhesive of the adhesive shaft shoulder, when without magnetic force, the elastic force of reaction spring 4 orders about adhesive end face 52 and separates with adhesive shaft shoulder face 22；Pilot hole 53 guides the spring stack 63 (see Fig. 6) of push rod 6 to pass, and is slidably matched with spring stack 63；Yoke card access surface 54 is used for and the right draw-in groove 7a removably clamping on the right plate 71 of rearmounted yoke 7；Spring connecting end surface 510 in spring eye 51 is for being connected with one end of reaction spring 4, i.e. one end of reaction spring 4 abuts with spring connecting end surface 510.
See Fig. 6, described push rod 6 is provided with interference fit stomidium 61, anticreep termination 62 and spring stack 63, spring stack 63 one end is provided with anticreep termination 62, the other end is connected with interference fit post, being provided with in interference fit post and move the interference fit stomidium 61 that iron core 2 is connected, the diameter of interference fit post is less than spring stack 63；Interference fit stomidium 61 is used for and interference fit axle head 21 (see Fig. 7) interference fit on dynamic iron core 2；The diameter of anticreep termination 62 is more than the diameter of the pilot hole 53 on static iron core 5；And, the diameter of anticreep termination 62 is more than the diameter of spring stack 63, within stoping the pilot hole 53 (see Fig. 5) on the whole retraction static iron core 5 of push rod 6, tripping mechanism 9b (see Fig. 3) touching that anticreep termination 62 is additionally operable to chopper simultaneously coordinates, to export trip action.Spring stack 63 is for being slidably matched with the pilot hole 53 on static iron core 5, and interference fit post and spring stack 63 are additionally operable to be set with reaction spring 4.
See Fig. 7, described dynamic iron core 2 is provided with the axle body 20 that is slidably matched, interference fit axle head 21 and adhesive shaft shoulder face 22, the diameter of interference fit axle head 21 is less than the diameter of the axle body 20 that is slidably matched, be slidably matched the axle body 20 end face formation adhesive shaft shoulder face 22 with interference fit axle head 21 junction, is additionally provided with spacing preiection on interference fit axle head 21；The cylindrical hole 30 (see Fig. 4) of axle body 20 and insulating sleeve 3 of being slidably matched is slidably matched, and can move along a straight line in cylindrical hole 30；Interference fit axle head 21 is used for and interference fit stomidium 61 interference fit on push rod 6；Adhesive shaft shoulder face 22 is used for and adhesive end face 52 (see Fig. 5) electromagnetic coupled on static iron core 5, i.e. under the magneticaction of solenoid 12, adhesive end face 52 and face 22 adhesive of the adhesive shaft shoulder, when without magnetic force, the elastic force of reaction spring 4 orders about adhesive end face 52 and separates with adhesive shaft shoulder face 22, and, adhesive shaft shoulder face 22 is additionally operable to be connected with the other end of reaction spring 4, the be slidably matched diameter of axle body 20 is more than the diameter of spring stack 63, and the other end of reaction spring 4 abuts with adhesive shaft shoulder face 22.
Magnetictrip of the present utility model also includes striking magnetic conduction coil 1, and it has the characteristic of conduction, magnetic conduction, striking, has the several functions of coil, yoke, static contact, arc striking component concurrently, and this is another beneficial features of the present utility model.Seeing Fig. 2, striking magnetic conduction coil 1 includes patch panel 11, solenoid 12 and magnetic conduction static contact 13, and magnetic conduction static contact 13 is provided with arc end 13a, yoke portion 13b and contact part 13c.In the specific embodiment of the striking magnetic conduction coil 1 shown in Fig. 2, it is the component being welded into successively by patch panel 11, solenoid 12 and magnetic conduction static contact 13.It is emphasized that, here " component " refers to that patch panel 11, solenoid 12 and magnetic conduction static contact 13 weld successively and is formed as non-removable integral member, welding described here, not only there is the effect of the electrical connection of existing like product, the most also there is the effect being mechanically connected molding.Obviously, the advantage of such striking magnetic conduction coil 1 structure is: be easy to automatization, scale machine-shaping, and available special equipment carries out welding, shaping, can ensure that machining accuracy；It is easy on streamline implement to assemble, it is advantageously ensured that assembly precision；Can increase substantially production efficiency, save process and assemble man-hour.Described welding preferably employs energy storage welding, has an advantage in that automaticity and working (machining) efficiency are high, and weld strength is good, and can also effectively evade the problem polluting environment that traditional welding (such as soldering) exists.See Fig. 9, described magnetic conduction static contact 13 bends to have arc end 13a, yoke portion 13b and the structure of contact part 13c with the sheet material of a good conduction good magnetic conduction, wherein arc end 13a extends to region, arc-chutes entry position 120, yoke portion 13b is aligned parallel to the axis 0-0 of solenoid 12, and contact part 13c is provided with stationary contact 14.The preferred shape and structure of magnetic conduction static contact 13 is the P character form structure being connected successively by arc end 13a, yoke portion 13b and contact part 13c, as depicted in figs. 1 and 2, the arc leading angle of V-type is formed between yoke portion 13b and contact part 13c, including the vertical section that be provided with stationary contact 14 vertical with yoke portion 13b and the tilting section that is connected between yoke portion 13b and vertical section, acutangulating between vertical section and tilting section, vertical section becomes circular arc with the outside of tilting section junction.It should be appreciated that to: owing to magnetic conduction static contact 13 has excellent conductive characteristic, therefore the structure that stationary contact 14 is arranged in contact part 13c, and arc end 13a is arranged in the structure in region, arc-chutes entry position 120, can be by stationary contact 14 and the electric arc produced during moving contact disjunction, through contact part 13c, yoke portion 13b and arc end 13a is directed directly towards arc-chutes (not shown), without allowing electric arc jump to another electric-conductor (such as the support of prior art) from an electric-conductor (such as the arc leading angle of prior art), avoid the occurrence of the problem that the short-circuit protection ability of circuit breaker is restricted.And, owing to yoke portion 13b is parallel to the axial 0-0 of solenoid 12, yoke portion 13b is made to be in the vantage point in the magnetic circuit of solenoid 12, and magnetic conduction static contact 13 has excellent permeance, therefore yoke portion 13b has the effect of similar yoke, it can increase the magnetic force between dynamic iron core 2 and static iron core 5, in order to effectively adds the trip action speed of snap-action iron core 2, improves the trip action performance of magnetictrip.
For improving the trip action performance of magnetictrip, increase dynamic magnetic force between iron core 2 and static iron core 5, a kind of preferably layout structure scheme is as depicted in figs. 1 and 2: the solenoid 12 of described striking magnetic conduction coil 1 is sleeved on the outside of insulating sleeve 3, after suit, striking magnetic conduction coil 1 and core assembly are respectively mounted and are fixed in housing 8, rearmounted yoke 7 snaps fitted on core assembly after striking magnetic conduction coil 1 and core assembly are installed and fixed again, the advantage of this preferred layout structure scheme is to facilitate the overall package of circuit breaker, it is prone to ensure the precision of overall package, avoid assembling the trip action performance to magnetictrip to have adverse effect on.The most after assembling, a dynamic part for iron core 2 and a part for static iron core 5 are always positioned in the range of length L of solenoid 12, a part for a part and static iron core 5 of i.e. moving iron core 2 is arranged in the coiler part in the range of length L, and dynamic iron core 2 and static iron core 5 so can be made to be in the region that the magnetic field of solenoid 12 is the strongest all the time；And yoke portion 13b is positioned at length L of solenoid 12, coiler part in the range of i.e. yoke portion 13b and length L be arranged in parallel, so can make that yoke portion 13b is in outside solenoid 12 most beneficial for the region strengthening dynamic magnetic force between iron core 2 and static iron core 5.
Rearmounted yoke formula magnetictrip of the present utility model also includes rearmounted yoke 7, it is with the detachable clamping of core assembly, i.e. after core assembly installation is fixed on housing 8 base plate of miniature circuit breaker, more rearmounted yoke 7 is snapped fit onto on core assembly removably.Obviously, this is another beneficial features of the present utility model, the advantage of this rearmounted magnetic yoke structure is: be first the approach of the circuit breaker offer optional configuration yoke for unlike signal so that the core assembly of same structure can adapt to the circuit breaker of different model；Next to that simple in construction, it is simple to assembling, stacked structure is easy to automatic assembling so that the circuit breaker of different model can assemble on same production line；3rd, owing to the optimal magnetic force between dynamic iron core 2 and the static iron core 5 of the circuit breaker of different model exists different, therefore, by optional configuration yoke, the magnetic force that can optimize between dynamic iron core 2 and static iron core 5 mates, and can be effectively improved the Interruption of chopper.The structure of rearmounted yoke 7 can have various ways, a kind of preferably structure is as shown in Figure 8: described rearmounted yoke 7 uses and is connected, by right plate 71, yoke plate 70 and left plate 72, the concave structure constituted successively, the right draw-in groove 7a that right plate 71 is provided with and insulating sleeve 3 clamping of static iron core 5 clamping of core assembly, the left draw-in groove 7b that left plate 72 is provided with and core assembly；Right plate 71 and left plate 72 are positioned at yoke plate 70 one end, and yoke plate 70 other end contacts connection with housing 8, and yoke plate 70 is vertically arranged with housing 8, and right plate 71 and left plate 72 are positioned on core assembly and housing 8 base plate.Obviously, by the direct clamping of static iron core 5 of right draw-in groove 7a Yu core assembly, decrease the air-gap between rearmounted yoke 7 and iron core, the effect of magnetic force between dynamic iron core 2 and static iron core 5 can be further enhanced.
Fig. 3 and Fig. 9 shows an embodiment of the miniature circuit breaker using magnetictrip of the present utility model, shows the dismountable rearmounted assembly relation between rearmounted yoke 7 and core assembly in Fig. 9.The miniature circuit breaker of the rearmounted yoke formula magnetictrip described in employing of the present utility model includes operating mechanism 9a, tripping mechanism 9b, magnetic conduction static contact 13, trigger device 9c and the arc-control device being arranged in housing 8, also including the rearmounted yoke formula magnetictrip of any one embodiment foregoing, it includes core assembly, striking magnetic conduction coil 1 and rearmounted yoke 7.The solenoid 12 of described striking magnetic conduction coil 1 is sleeved on the outside of the insulating sleeve 3 of core assembly, after suit, striking magnetic conduction coil 1 and core assembly are respectively mounted and are fixed on housing 8 base plate, housing 8 base plate is provided with corresponding spacing preiection and fixed groove, after striking magnetic conduction coil 1 and core assembly are fixed in housing 8, rearmounted yoke 7 is snapped fitted on core assembly again.The stationary contact 14 that contact part 13c of the magnetic conduction static contact 13 of described magnetictrip is provided with coordinates with the movable contact disjunction/Guan Bi of trigger device 9c, the push rod 6 of magnetictrip coordinates with tripping mechanism 9b touching, and the arc end 13a of magnetictrip is positioned at the porch 100 (seeing Fig. 3) of the arc-chutes cooperation striking of arc-control device.When circuit normally works, striking magnetic conduction coil 1 produces excitation field, owing to the existence electromagnetic attraction of air gap and reaction spring 4 is not enough so that dynamic iron core 2 moves.When circuit occurs sufficiently large electric current, striking magnetic conduction coil 1 produces sufficiently large excitation field, iron core 2 is made to promote push rod 6 to overcome the counter-force of reaction spring 4 to move to static iron core 5 direction under the effect of this excitation field, push rod 6 promotes tripping mechanism, realize under overcurrent circuit protection function magnetic conduction static contact 13 is made up of ferrimagnet and is electrically connected on striking magnetic conduction coil 1, magnetic conduction static contact 13 was passed through before turning again to dynamic iron core 2 in the magnetic field that coil is produced, magnetic resistance is greatly reduced and strengthens dynamic suction between iron core 2 and static iron core 5, mechanism is unlocked accelerate, it is greatly promoted product interrupting performance.When occurring big short circuit current in circuit, the passive iron core of mechanism 2 promotes push rod 6 to make mechanism there will be, after unlocking, the electric arc being difficult to extinguish, and magnetic conduction static contact 13 of the present utility model can be with continuous print pilot arc until electric arc enters arc-control device and extinguishes.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. the magnetictrip of energy striking, it is characterized in that: include that striking magnetic conduction coil (1) being enclosed within outside core assembly, described striking magnetic conduction coil (1) are by patch panel (11), solenoid (12) and to be provided with the assembly that the magnetic conduction static contact (13) of arc-striking structure is in turn connected into.
The magnetictrip of energy the most according to claim 1 striking, it is characterised in that: described core assembly includes dynamic iron core (2), insulating sleeve (3), reaction spring (4), static iron core (5) and push rod (6)；Insulating sleeve (3) is fixing with static iron core (5) to be connected, dynamic iron core (2) is in the cylindrical hole (30) being arranged on insulating sleeve (3) is inserted in insulating sleeve (3) one end, push rod (6) inserts from pilot hole (53) one end of static iron core (5) and moves iron core (2) and fix and be connected, reaction spring (4) is sleeved on the push rod (6) in cylindrical hole (30), and, one end of reaction spring (4) is connected with dynamic iron core (2), and the other end of reaction spring (4) is connected with static iron core (5).
The most according to claim 1 can the magnetictrip of striking, it is characterised in that: described magnetic conduction static contact (13) is provided with arc end (13a), yoke portion (13b) and be provided with the contact part (13c) of arc-striking structure being sequentially connected with.
The magnetictrip of energy the most according to claim 3 striking, it is characterized in that: described magnetic conduction static contact (13) one good conduction of employing the sheet material bending of good magnetic conduction are made and had arc end (13a), yoke portion (13b) and the structure of contact part (13c), wherein said arc end (13a) is arranged in region, arc-chutes entry position, described yoke portion (13b) is parallel to the axial of solenoid (12), the arc leading angle of V-type is formed between yoke portion (13b) and contact part (13c), including the vertical section that be provided with stationary contact (14) vertical with yoke portion (13b) and the tilting section that is connected between yoke portion (13b) and vertical section, acutangulate between vertical section and tilting section, vertical section becomes circular arc with the outside of tilting section junction.
The magnetictrip of energy the most according to claim 1 striking, it is characterised in that: the patch panel (11) of described striking magnetic conduction coil (1), solenoid (12) and magnetic conduction static contact (13) are welded as an assembly by energy storage.
The magnetictrip of energy the most according to claim 2 striking, it is characterized in that: described insulating sleeve (3) includes coil mounting post (31), being provided with cylindrical hole (30) in coil mounting post (31), one end of cylindrical hole (30) realizes static iron core (5) with interference fit face (50) interference fit of static iron core (5) outer surface and is connected with the interference of insulating sleeve (3)；Described static iron core (5) outer surface is the interference fit face (50) coordinated with insulating sleeve (3), static iron core (5) axis is provided with spring eye (51) and pilot hole (53), spring eye (51) and pilot hole (53) through setting, the diameter of spring eye (51) is more than the diameter of pilot hole (53), spring eye (51) forms spring connecting end surface (510) with the end face of pilot hole (53) junction, and reaction spring (4) is arranged on spring eye (51) interior one end and abuts with spring connecting end surface (510)；One end of static iron core (5) is the adhesive end face (52) coordinated with dynamic iron core (2).
The magnetictrip of energy the most according to claim 2 striking, it is characterized in that: described push rod (6) is provided with interference fit stomidium (61), anticreep termination (62) and spring stack (63), spring stack (63) one end is provided with anticreep termination (62), the other end is connected with interference fit post, it is provided with in interference fit post and moves the interference fit stomidium (61) that iron core (2) is connected, further, the diameter of described anticreep termination (62) is more than the diameter of the pilot hole (53) on static iron core (5).
8. according to the magnetictrip of the energy striking described in claim 2 or 7, it is characterised in that: described dynamic iron core (2) is provided with the axle body that is slidably matched (20), interference fit axle head (21) and adhesive shaft shoulder face (22)；The diameter of interference fit axle head (21) forms adhesive shaft shoulder face (22) less than the diameter of axle body (20) that are slidably matched, the axle body that is slidably matched (20) with the end face of interference fit axle head (21) junction；One end of reaction spring (4) contacts connection with the adhesive shaft shoulder face (22) of dynamic iron core (2), and the other end is connected with the spring connecting end surface (510) in the spring eye (51) of static iron core (5).
The magnetictrip of energy the most according to claim 2 striking, it is characterised in that: described magnetic conduction static contact (13) is provided with arc end (13a), yoke portion (13b) and the contact part (13c) being sequentially connected with；The solenoid (12) of described striking magnetic conduction coil (1) is sleeved on insulating sleeve (3), and make a dynamic part for iron core (2) and a part for static iron core (5) be always positioned in the range of the length (L) of this solenoid (12), and the coiler part in the range of described yoke portion (13b) and the length (L) of this solenoid (12) is be arranged in parallel, and in the range of making yoke portion (13b) be positioned at the length (L) of this solenoid (12).
10. a miniature circuit breaker, including the operating mechanism (9a) being arranged in its housing (8), tripping mechanism (9b), trigger device (9c) and arc-control device, it is characterised in that: described chopper also includes the magnetictrip of the energy striking as described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520787838.XU CN205657030U (en) | 2015-10-13 | 2015-10-13 | Electromagnetism release and miniature circuit breaker of ability striking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520787838.XU CN205657030U (en) | 2015-10-13 | 2015-10-13 | Electromagnetism release and miniature circuit breaker of ability striking |
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| Publication Number | Publication Date |
|---|---|
| CN205657030U true CN205657030U (en) | 2016-10-19 |
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| CN201520787838.XU Active CN205657030U (en) | 2015-10-13 | 2015-10-13 | Electromagnetism release and miniature circuit breaker of ability striking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461362A (en) * | 2017-02-22 | 2018-08-28 | 浙江正泰电器股份有限公司 | Breaker and its assembly method |
| CN110739191A (en) * | 2018-07-20 | 2020-01-31 | 施耐德电器工业公司 | Electromagnetic release |
| CN114050096A (en) * | 2021-11-11 | 2022-02-15 | 西安理工大学 | Miniature circuit breaker arc extinguishing system and have its miniature circuit breaker |
-
2015
- 2015-10-13 CN CN201520787838.XU patent/CN205657030U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461362A (en) * | 2017-02-22 | 2018-08-28 | 浙江正泰电器股份有限公司 | Breaker and its assembly method |
| CN108461362B (en) * | 2017-02-22 | 2020-06-30 | 浙江正泰电器股份有限公司 | Method for assembling circuit breaker |
| CN110739191A (en) * | 2018-07-20 | 2020-01-31 | 施耐德电器工业公司 | Electromagnetic release |
| CN114050096A (en) * | 2021-11-11 | 2022-02-15 | 西安理工大学 | Miniature circuit breaker arc extinguishing system and have its miniature circuit breaker |
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