CN202736857U - Driving mechanism - Google Patents
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- CN202736857U CN202736857U CN 201220370510 CN201220370510U CN202736857U CN 202736857 U CN202736857 U CN 202736857U CN 201220370510 CN201220370510 CN 201220370510 CN 201220370510 U CN201220370510 U CN 201220370510U CN 202736857 U CN202736857 U CN 202736857U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 107
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 223
- 230000003068 static effect Effects 0.000 claims description 60
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- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 15
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Abstract
The utility model provides a driving mechanism. The driving mechanism comprises a fixed iron core, a movable iron core, an upper driving coil, a permanent magnet and a lower driving coil. The fixed iron core is provided with an inner cavity. The inner cavity comprises an upper end surface, a lower end surface, and cylindrical movable iron core moving space positioned between the upper end surface and the lower end surface. The movable iron core is movably disposed in the movable iron core space and has at least a first working position. The upper driving coil, the permanent magnet and the lower driving coil are separately sleeved outside the movable iron core moving space. At the first working position, a first annular boss and a fourth annular boss are mutually folded radially to form a magnet circuit. An upper end surface of the movable iron core is far away from the upper end surface of the inner cavity, and a lower end surface of the movable iron core is far away from the lower end surface of the inner cavity.
Description
Technical field
The utility model relates to driving arrangement technology or electrical control field, is specifically related to a kind of driving mechanism, especially a kind of three-stable state permanent-magnet manipulating mechanism.
Background technology
Existing permanent-magnet manipulating mechanism mainly is divided into bistable-state permanent magnet mechanism and Monostable permanent magnetic mechanism on principle, the below simply introduces respectively its principle.
The principle of paper bi-stable permanent magnetism operating mechanism.So-called bistable state refers to that moving iron core in two positions that stroke stops, does not need mechanical lock buckle to keep.Fig. 1 is the structural principle sketch of existing a kind of bi-stable permanent magnetism operating mechanism, and as shown in Figure 1, bi-stable permanent magnetism operating mechanism has seven major parts: 11 are static iron core, for mechanism provides the magnetic circuit passage; 12 for moving iron core, is the moving component in the whole mechanism; 13 is permanent magnet, needed power when providing maintenance for mechanism; 14 is switching winding; 15 is closing coil; 16 is drive rod.
When circuit breaker was in combined floodgate or open position, no current passed through in the coil, and the low magnetoimpedance passage that permanent magnet utilizes dynamic and static iron core to provide will move iron core and remain on combined floodgate or open position, and without any need for mechanical lock buckle.When actuating signal is arranged, electric current in combined floodgate or the switching winding produces magnetic potential, and the magnetic field in the magnetic circuit is synthesized by the magnetic field of coil generation and the magnetic field superposition of permanent magnet generation, moves iron core together with the drive rod that is fixed in the above, under the effect of resultant magnetic field power, the driving switch body is finished the on/off switch task.
The distribution situation in magnetic field when Fig. 2 (a)-(d) is in diverse location in the stroke for bistable-state permanent magnet mechanism moving iron core in the separating brake process.The Distribution of Magnetic Field of Fig. 2 (a) when being in open position for mechanism.At this moment, close, the equal no current of switching winding passes through, moving iron core and static iron core be together for permanent magnet forms a low magnetoimpedance path, and at the larger air gap of moving iron core bottom larger magnetic resistance is arranged, so the magnetic line of force is distributed in the upper end of moving iron core widely.Fig. 2 (b) is for mechanism is in the holding position, the Distribution of Magnetic Field at a flash when switching winding alives.Along with the increase of electric current, the magnetic potential that coil produces changes Distribution of Magnetic Field, and the number of the magnetic line of force by the bottom air gap increases gradually, and the result is under the effect of resultant magnetic field, and moving iron core has been subject to the up and down active force of both direction simultaneously.And when the Current rise in the coil during to certain value, the suffered downward power of moving iron core just begins to move downward in case surpass power upwards, and the increase along with displacement, the magnetic resistance of bottom air gap reduces gradually, and magnetic flux density is increasing, thereby moving iron core is accelerated motion downwards.Fig. 2 (c) moves to the Distribution of Magnetic Field situation of stroke one half for moving iron core.This moment, the magnetic line of force was most of by the bottom air gap.Magnetic line of force distribution situation when Fig. 2 (d) stops namely arriving another holding position of mechanism for moving iron core motion.This moment, the bottom air gap was zero, and the magnetic potential of coil current and permanent magnet produces stronger magnetic field in the low magnetoimpedance passage that dynamic and static iron core provides, remove the electric current in the coil, and moving iron core will remain on closing position automatically.
Except bi-stable permanent magnetism operating mechanism, also has Monostable permanent magnetism operating mechanism.So-called Monostable permanent magnetism operating mechanism is for bistable state.The permanent-magnet manipulating mechanism that namely only has a stroke final position to keep by permanent magnet.Fig. 3 is the structural principle sketch of monostable unicoil permanent-magnet manipulating mechanism.As can be seen from the figure, the difference of the maximum of this structure and bistable mechanism is to be provided with tripping spring in the mechanism, and has adopted single coil structure.21 is tripping spring among the figure, and required power when the mechanism separating brake is provided can be located on the transmission mechanism; 22 are magnetic conduction cover plate not; The 23rd, the custom-designed magnetic circuit guide ring of structure for this reason; 24 is permanent magnet; 25 is static iron core; 26 is coil, and divide-shut brake adopts same coil in this monostable mechanism, by realizing breaking-closing operating to the electric current of the logical different directions of coil; 27 are moving iron core; 28 is the connecting rod that links with transmission mechanism, the propagation function of realizable force.
Monostable permanent magnetism operating mechanism shown in Figure 3 is in closing position, no current passes through in the coil 26 at this moment, permanent magnet produces stronger magnetic field in the low magnetoimpedance path that dynamic and static iron core provides, moving iron core is subject to larger downward electromagnetic attraction to remain on closing position under the effect in this magnetic field.Monostable permanent magnetism operating mechanism static confining force under identical transmission mechanism will design greatlyr than bistable mechanism, this is because mechanism not only will provide arc control device required confining force when the holding position, also must overcome simultaneously the pulling force that makes progress that produces behind the tripping spring Tensile.Because the basic foundation of permanent-magnet manipulating mechanism when design is the required confining force that provides of mechanism, the size of confining force has determined the size of operating mechanism overall dimensions to a certain extent, on this point, Monostable permanent magnetism operating mechanism dwindles mechanism's overall dimensions easily not as bi-stable permanent magnetism operating mechanism.When mechanism needed separating brake, coil 26 was connected with the electric current of certain orientation, made coil opposite with the magnetic direction that permanent magnet produces herein in the magnetic field that moving iron core bottom air gap produces, and purpose is to reduce the moving suffered downward electromagnetic attraction of iron core.Along with the increase of coil current, the moving suffered electromagnetic attraction of iron core reduces gradually, and when this power was reduced to pulling force less than tripping spring, moving iron core will drive moving contacts via drive link 28 under the effect of spring tension finish the separating brake action.When mechanism was in gate-dividing state, because upper end cover is non-magnet_conductible material, permanent magnet can not provide confining force upwards for moving iron core, and this moment, moving iron core can remain on open position together with moving contact because tripping spring has pretension.This shows that bistable-state permanent magnet mechanism all is to realize keeping function by the suction that permanent magnet produces in two positions of dividing, close a floodgate, Monostable permanent magnetic mechanism is then only kept by permanent magnetism at closing position, and open position is kept by spring.
Existing bistable-state permanent magnet mechanism and Monostable permanent magnetic mechanism only have two stable position, are difficult to satisfy the actuating requirement of tri-station isolating switch.Patent CN 102064600A (open date: 2011.05.18; Country origin: provided a kind of Tristable differential permanent magnetic operating mechanism China), by being symmetrical arranged the differential type pretensioned spring in the drive rod place at two ends up and down at bi-stable permanent magnetism operating mechanism shown in Figure 1, elastic force by spring makes iron core all can keep steady calmly in the location dimension shown in Fig. 2 (c) in cold situation at coil, thereby obtains the 3rd settling position.But this structure increases spring and attached parts thereof on the basis of bi-stable permanent magnetism operating mechanism, complex structure, it is large that volume becomes, and the permanent magnetism adhesive confining force of operating mechanism when position shown in Fig. 2 (a) or Fig. 2 (d) need to overcome the elastic force of spring, and consider the damping effect of spring, limited that this operating mechanism closes a floodgate or the speed of separating brake.
The utility model content
The utility model provides a kind of driving mechanism, to solve prior art in the switching of three service positions and to keep needing auxiliary could the realization of the parts such as spring and the complex structure that brings, control coarse problem, the auxiliary problem controlled of could realizing that will solve especially that the service position needs the parts such as spring in the centre position that is positioned at static iron core.
For this reason, the utility model proposes a kind of driving mechanism, described driving mechanism comprises: static iron core 1, moving iron core 2, upper drive coil 3, permanent magnet 5 and lower drive coil 6, described static iron core 1 has inner chamber, described inner chamber comprises: the upper surface, the moving iron core mobile space of lower surface and the cylindricality between described upper surface and described lower surface, described moving iron core 2 mobile being arranged on also have the first service position at least in the described moving iron core mobile space, described static iron core 1 also comprises: spaced apart and be enclosed in respectively the outer a plurality of annular dead slot of described inner chamber from top to bottom, described upper drive coil 3 and described lower drive coil 6 are set in respectively outside the described moving iron core by described annular dead slot; Described static iron core 1 also comprises: it is outer and be positioned at the first annular boss 104 of described static iron core 1 middle part and two annular dead slots of separating adjacent to be enclosed in described inner chamber;
Described moving iron core 2 comprises at least: from top to bottom a plurality of grooves spaced apart, and the Fourth Ring shape boss 204 that is positioned at described moving iron core 2 middle parts and two described grooves of separating adjacent,
In described the first service position, described the first annular boss and described Fourth Ring shape boss are combined to form magnetic circuit diametrically mutually, and the upper surface of described moving iron core 2 is away from the upper surface of described inner chamber, and the lower surface of described moving iron core 2 is away from the lower surface of described inner chamber.
Further, described a plurality of annular dead slot is: spaced apart and be enclosed in respectively described moving iron core mobile space outer the first annular dead slot, the second annular dead slot and the 3rd annular dead slot from top to bottom, described upper drive coil 3 is arranged in the described first annular dead slot, and described lower drive coil 6 is arranged in the described the 3rd annular dead slot; Described the first annular boss 104 is separated the described first annular dead slot and the second annular dead slot, described static iron core 1 also comprises: it is outer and separate the second annular boss 106 of the described second annular dead slot and described the 3rd annular dead slot to be enclosed in described moving iron core mobile space, is provided with the space that holds described permanent magnet 5 between described the second annular boss 106 and the described moving iron core mobile space;
Described moving iron core 2 also comprises: the 3rd annular boss 202 and the five rings shape boss 206 that lay respectively at shape boss 204 above and belows, described Fourth Ring, the upper surface of described moving iron core 2 is positioned on described the 3rd annular boss 202, the lower surface of described moving iron core 2 is positioned on the described five rings shape boss 206, and described moving iron core also comprises: the first groove between described the 3rd annular boss and the described Fourth Ring shape boss and be positioned at Fourth Ring shape boss and described five rings shape boss between the second groove;
Described moving iron core 2 also has the second service position and the 3rd service position,
In described the first service position, described the first annular boss and described Fourth Ring shape boss are combined to form the first magnetic circuit diametrically mutually, described five rings shape boss and described the second annular boss are combined to form the second magnetic circuit diametrically mutually, described the first magnetic circuit and described the second communicated magnetic circuit, described the 3rd annular boss is away from the upper surface of described inner chamber, and described five rings shape boss is away from the lower surface of described inner chamber;
In described the second service position, fit and form the 3rd magnetic circuit in the lower surface of described five rings shape boss and described inner chamber, described five rings shape boss and described the second annular boss are combined to form the 4th magnetic circuit diametrically mutually, described the 3rd magnetic circuit and described the 4th communicated magnetic circuit, described the 3rd annular boss is away from the upper surface of described inner chamber, described Fourth Ring shape boss and described the first annular boss stagger diametrically mutually
In described the 3rd service position, fit and form the 5th magnetic circuit in the upper surface of described the 3rd annular boss and described inner chamber, described five rings shape boss and described the second annular boss are combined to form the 6th magnetic circuit diametrically mutually, described the 5th magnetic circuit and described the 6th communicated magnetic circuit, described the 3rd annular boss and described the first annular boss stagger diametrically mutually, and described five rings shape boss is away from the lower surface of described inner chamber.
Further, also be provided with middle drive coil 4 in the described second annular dead slot.
Further, be provided with magnetic conductive part between described permanent magnet 5 and the moving iron core 2.
Further, the height of described Fourth Ring shape boss is more than or equal to the height of described the first annular boss.
Further, described moving iron core 2 is symmetrical structure.
Further, the height of described five rings shape boss is greater than the height sum of the described the 3rd annular dead slot and described the second annular boss.
Further, the height of described the first annular dead slot is greater than the height sum of described the 3rd annular boss and described the first groove.
Further, described driving mechanism also comprises: the drive rod 7 that is connected to described moving iron core two ends about in the of 2, described static iron core 1 also comprises: be arranged on described inner chamber up and down two ends and the perforation that is communicated with described inner chamber, described drive rod 7 mobile being arranged in the described perforation, the bore of described perforation are greater than the bore of described drive rod 7 but less than the bore of described moving iron core.
Further, described the first annular boss is concordant with the inner edge of described permanent magnet 5 and extend to the outer ledge of described moving iron core mobile space; Described the 3rd annular boss, Fourth Ring shape boss is concordant with the outer rim of five rings shape boss and extend to the inside edge of described moving iron core mobile space.
The utility model is by arranging Fourth Ring shape boss and a plurality of groove at moving iron core, and the first annular boss and a plurality of annular dead slot be set in static iron core, on the centre position of setting, mutually involutory or applying or cooperate of the first annular boss in Fourth Ring shape boss on the moving iron core and the static iron core, consist of stable magnetic circuit, iron core is in away from the upper surface of described inner chamber and the centre position between the lower surface, need not spring etc. other mechanical structures, closure by cooperating between the protuberance between moving iron core and the static iron core and the depressed part forming magnetic circuit just energy will be moved on the centre position that iron core remains on setting, this operating mechanism is simple in structure, volume is little, and the high action of reliability is dispersed little, controllability is good.
And then the utility model can consist of stable magnetic circuit at three diverse locations and permanent magnet, static iron core, is stabilized on these three positions thereby will move iron core, realizes switching and the maintenance of three service positions.The utility model need not to thread off, locker, just can realize by the electric current of the upper drive coil of control the switching of moving three stable position of iron core, and realize the maintenance of service position by permanent magnetic under powering-off state.The utility model is simple in structure, reliability is high, controllability is good, is the ideal element of development intelligent electric equipment or hydraulic test.
Description of drawings
Fig. 1 is existing bi-stable permanent magnetism operating mechanism principle schematic;
Fig. 2 is the Distribution of Magnetic Field schematic diagram of bi-stable permanent magnetism operating mechanism separating brake process;
Fig. 3 is existing Monostable permanent magnetism operating mechanism structural representation;
Fig. 4 is the structural representation according to the first driving mechanism of the utility model embodiment, wherein, does not have middle drive coil;
Fig. 5 is the Distribution of Magnetic Field schematic diagram of the moving iron core of driving mechanism shown in Figure 4 when being stabilized in position b;
Fig. 6 is the Distribution of Magnetic Field schematic diagram of the moving iron core of driving mechanism shown in Figure 4 when being stabilized in position c;
Fig. 7 is the Distribution of Magnetic Field schematic diagram of the moving iron core of driving mechanism shown in Figure 4 when being stabilized in position a;
Fig. 8 is the structural representation according to the second driving mechanism of the utility model embodiment, wherein, is provided with middle drive coil;
Fig. 9 is the structural representation of the third driving mechanism of the utility model embodiment, wherein, is provided with magnetic conductive part (magnetic guiding loop) between permanent magnet and moving iron core.
The drawing reference numeral explanation:
1, the static iron core of static iron core 2, moving iron core 3, upper drive coil 4, middle drive coil 5, permanent magnet 6, lower drive coil 7, drive rod 8, magnetic line of force 11-bi-stable permanent magnetism operating mechanism; The moving iron core of 12-bi-stable permanent magnetism operating mechanism; The permanent magnet of 13-bi-stable permanent magnetism operating mechanism; The switching winding of 14-bi-stable permanent magnetism operating mechanism; The closing coil of 15-bi-stable permanent magnetism operating mechanism; The drive rod of 16-bi-stable permanent magnetism operating mechanism; The tripping spring of 21-Monostable permanent magnetism operating mechanism; The non-magnetic cover plate of 22-Monostable permanent magnetism operating mechanism; The magnetic circuit guide ring of 23-Monostable permanent magnetism operating mechanism; The permanent magnet of 24-Monostable permanent magnetism operating mechanism; The static iron core of 25-Monostable permanent magnetism operating mechanism; The coil of 26-Monostable permanent magnetism operating mechanism; The moving iron core of 27-Monostable permanent magnetism operating mechanism; The connecting rod of 28-Monostable permanent magnetism operating mechanism; The upper surface 2061 of 29-magnetic guiding loop 101, inner chamber 1011, inner chamber upper surface 1013, inner chamber lower surface 104, the first annular boss 105, the second annular dead slot 106, the second annular boss 201, groove 202, the 3rd annular boss 203, groove 204, Fourth Ring shape boss 206, five rings shape boss 2021, moving iron core, the lower surface of moving iron core
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
Fig. 4 shows the structure according to the first driving mechanism of the utility model embodiment, described driving mechanism comprises: static iron core 1, moving iron core 2, upper drive coil 3, permanent magnet 5 and lower drive coil 6, described static iron core 1 has inner chamber 101, described inner chamber 101 comprises: upper surface 1011, the moving iron core mobile space of lower surface 1013 and the cylindricality between described upper surface and described lower surface, described moving iron core 2 mobile being arranged on also have the first service position, described upper drive coil 3 at least in the described moving iron core mobile space, permanent magnet 5 and lower drive coil 6 are set in respectively outside the described moving iron core mobile space.In the present embodiment, the first service position is the b position, namely moving iron core 2 is in the centre position in the static iron core 1, this position neither moving iron core 2 be in static iron core 1 upper end the position (be the position a), neither move the position (being position c) that iron core 2 is in static iron core 1 lower end, this is one of the utility model difference with the prior art.Prior art can only realize that moving iron core 2 is in the position of static iron core 1 upper end or lower end by Electromagnetic Control, the stable state that can not be implemented in the b position keeps, if and adopt the control of the mechanical parts such as spring, make iron core 2 be in the b position, then can increase the complexity of structure, and because the wearing and tearing of the mechanical parts such as spring cause the problems such as control error easily.
As shown in Figure 4, described static iron core 1 also comprises: spaced apart and be enclosed in respectively the outer a plurality of annular dead slot of described inner chamber from top to bottom, annular dead slot plays the effect of holding coil, when coil blackout, also plays the effect of the interval magnetic line of force.Described upper drive coil 3 and described lower drive coil 6 are set in respectively outside the described moving iron core by described annular dead slot; Described static iron core 1 also comprises: it is outer and be positioned at the first annular boss 104 of described static iron core 1 middle part and two annular dead slots of separating adjacent to be enclosed in described inner chamber.
Described moving iron core 2 comprises at least: from top to bottom a plurality of grooves spaced apart, and the Fourth Ring shape boss 204 that is positioned at described moving iron core 2 middle parts and two described grooves of separating adjacent (for example the first groove 201 and the second groove 203).
In described the first service position, the Fourth Ring shape boss 204 of moving iron core 2 is in the b position, during the equal no power of each coil, as shown in Figure 5, described the first annular boss and 104 described Fourth Ring shape boss 204 are mutual involutory (involutory can be the applying herein diametrically, overlap, adhesive or cooperation) formation the first magnetic circuit, five rings shape boss and described the second annular boss are combined to form the second magnetic circuit diametrically mutually, the first magnetic circuit and described the second communicated magnetic circuit form closed magnetic path, so, moving iron core 2 is in stable position, namely moving iron core is subject to external disturbance and when departing from a little this position, the moving suffered magnetic force of iron core can drive it and get back to this stable position.In the b position, the upper surface of described moving iron core 2 is away from the upper surface of described inner chamber, and the lower surface of described moving iron core 2 is away from the lower surface of described inner chamber.
Further, as shown in Figure 4, described a plurality of annular dead slots of static iron core 1 are: spaced apart and be enclosed in respectively described moving iron core mobile space outer the first annular dead slot, the second annular dead slot 105 and the 3rd annular dead slot from top to bottom, described upper drive coil 3 is arranged in the described first annular dead slot, and described lower drive coil 6 is arranged in the described the 3rd annular dead slot; Described the first annular boss 104 is separated the described first annular dead slot and the second annular dead slot 105, described static iron core 1 also comprises: it is outer and separate the second annular boss 106 of the described second annular dead slot and described the 3rd annular dead slot to be enclosed in described moving iron core mobile space, is provided with the space that holds described permanent magnet 5 between described the second annular boss 106 and the described moving iron core mobile space.
Described moving iron core 2 also comprises: the 3rd annular boss 202 and the five rings shape boss 206 that lay respectively at shape boss 204 above and belows, described Fourth Ring, the upper surface 2021 of described moving iron core 2 is positioned on described the 3rd annular boss 202, and the lower surface 2061 of described moving iron core 2 is positioned on the described five rings shape boss 206.Preferably, described moving iron core 2 is symmetrical structure, is convenient to make, and also is convenient to stress balance.
Except the first service position (b position), described moving iron core 2 also have the second service position (be the position a) and the 3rd service position (being position c).
As shown in Figure 4 and Figure 5, in described the first service position (b position), described the first annular boss 104 is combined to form magnetic circuit diametrically mutually with described Fourth Ring shape boss 204, described five rings shape boss 206 is combined to form the second magnetic circuit diametrically mutually with described the second annular boss 106, five rings shape boss and described the second annular boss are combined to form the 4th magnetic circuit diametrically mutually, and the first magnetic circuit and described the second communicated magnetic circuit form closed magnetic path.Described the 3rd annular boss 202 is away from the upper surface 1011 of described inner chamber, and described five rings shape boss 206 is away from the lower surface 1013 of described inner chamber.Among Fig. 5, between permanent magnet 5 and the five rings shape boss 206 the stronger magnetic line of force 8 is arranged, the magnetic line of force between this magnetic line of force 8 and the first annular boss 104 and the Fourth Ring shape boss 204 forms closed magnetic path, simultaneously, do not form magnetic circuit between the 3rd annular boss 202 of moving iron core 2 and the static iron core 1, thereby moving iron core 2 can remain on the b position.
As shown in Figure 6, in described the second service position (being position c), described five rings shape boss 206 is fitted with the lower surface 1013 of described inner chamber and is formed the 3rd magnetic circuit, described five rings shape boss 206 is combined to form the 4th magnetic circuit diametrically mutually with described the second annular boss 106, and the 3rd magnetic circuit and described the 4th communicated magnetic circuit form closed magnetic path.Described the 3rd annular boss 202 is away from the upper surface 1011 of described inner chamber, and described Fourth Ring shape boss 204 staggers diametrically mutually with described the first annular boss 104.
As shown in Figure 7, in described the 3rd service position (be the position a), described the 3rd annular boss 202 is fitted with the upper surface 1011 of described inner chamber and is formed the 5th magnetic circuit, described five rings shape boss 206 is combined to form the 6th magnetic circuit diametrically mutually with described the second annular boss 106, and the 5th magnetic circuit and described the 6th communicated magnetic circuit form closed magnetic path.Described the 3rd annular boss 202 staggers diametrically mutually with described the first annular boss 104, and described five rings shape boss 206 is away from the lower surface of described inner chamber.Among Fig. 7, between permanent magnet 5 and the five rings shape boss 206 the stronger magnetic line of force 8 is arranged, the magnetic line of force between the upper end of this magnetic line of force 8 and static iron core 1 and the 3rd annular boss 202 forms closed magnetic path, simultaneously, the first annular boss 104 does not form closed magnetic path with described Fourth Ring shape boss 204, thereby moving iron core 2 can remain on the c position.
Preferably, as shown in Figure 4, the height of described Fourth Ring shape boss 204 is more than or equal to the height of described the first annular boss 104, for example, the height of Fourth Ring shape boss 204 equals the height of described the first annular boss 104, so that Fourth Ring shape boss 204 has larger involutory area or cooperates area with the first annular boss 104, to form effective magnetic circuit.
Preferably, as shown in Figure 6, the height of described five rings shape boss 206 is greater than the height sum of height (namely descending the height of drive coil 6) Yu described second annular boss 106 of described the 3rd annular dead slot, so that five rings shape boss 206 forms effective magnetic circuit with permanent magnet 5, no matter be in which service position, can both make between permanent magnet 5 and the moving iron core 2 to keep communicated magnetic circuit.Among Fig. 6, between permanent magnet 5 and the five rings shape boss 206 the stronger magnetic line of force 8 is arranged, the magnetic line of force between the bottom of this magnetic line of force 8 and five rings shape boss 206 and static iron core 1 forms closed magnetic path, simultaneously, the 3rd annular boss 202 of moving iron core 2 and Fourth Ring shape boss 204 all less than and static iron core 1 between form magnetic circuit, thereby moving iron core 2 can remain on the c position.
Further, as shown in Figure 5, the height of described the first annular dead slot (namely going up the height of drive coil 3) is greater than the height sum of described the 3rd annular boss 202 with described the first groove 201, so that in described the first service position (b position), described the first annular boss 104 is combined to form magnetic circuit diametrically mutually with described Fourth Ring shape boss 204, so that the 3rd annular boss 202 and the first annular dead slot form high magnetoimpedance, guarantee the accurate of control simultaneously.
Further, as shown in Figure 4, described driving mechanism also comprises: the drive rod 7 that is connected to described moving iron core two ends about in the of 2, described static iron core 1 also comprises: be arranged on described inner chamber up and down two ends and the perforation that is communicated with described inner chamber, described drive rod 7 mobile being arranged in the described perforation, the bore of described perforation are greater than the bore of described drive rod 7 but less than the bore of described moving iron core.Can drive component movement outside the static iron core 1 by drive rod 7, reach the service position of setting, thereby the action that will be positioned at the moving iron core of static iron core 1 be transmitted to outside the static iron core 1.At position c, the lower surface of drive rod 7 is concordant with straight line c, and at position a, the upper surface of drive rod 7 is concordant with straight line a.
Further, described the first annular boss 104 is concordant with the inner edge of described permanent magnet 5 and extend to the outer ledge of described moving iron core mobile space; Described the 3rd annular boss 202, Fourth Ring shape boss 204 are concordant with the outer rim of five rings shape boss 206 and extend to the inside edge of described moving iron core mobile space.Like this, be convenient to process static iron core 1 and moving iron core 2, the magnetic line of force that also can formation rule.
When each coil blackout, when the boss of moving iron core 2 and the boss of static iron core 1 are involutory, moving iron core and static iron core form a low magnetoimpedance path with permanent magnet together, moving iron core and static iron core apposition position form magnetic circuit, and the boss of the boss of the boss of the involutory or moving iron core 2 of annular dead slot of the boss of moving iron core 2 and static iron core 1 and the involutory or moving iron core 2 of coil and static iron core 1 is when staggering, owing between the boss of moving iron core 2 and the boss of static iron core 1 larger space is arranged, has high magnetoimpedance to be difficult to form effective magnetic circuit between the boss of moving iron core 2 and the boss of static iron core 1.So, closure by cooperating between the protuberance between moving iron core and the static iron core and the depressed part forming magnetic circuit just energy will be moved on the centre position that iron core remains on setting, can consist of stable magnetic circuit at three diverse locations and permanent magnet, static iron core, be stabilized on these three positions thereby will move iron core.This operating mechanism is simple in structure, and volume is little, and the high action dispersiveness of reliability is little, controllability good.And need between the service position, switch the time, then by to coil electricity, so that the magnetic circuit under the original stable state changes, electromagnetic power is provided for the movement of moving iron core 2, when moving iron core 2 switches to next service position, coil blackout (for example, is connected with coil by the setting position transducer, when coil arrives next service position, feedback by position transducer, can control coil outage), then moving iron core 2 can be stable is in this position, keeps stable state.
Further, Fig. 8 shows the second driving mechanism according to the utility model embodiment, the main distinction of the first driving mechanism among this second driving mechanism and Fig. 4 is, also is provided with middle drive coil 4 in the described second annular dead slot 105, and all the other are basic identical.Can fast make accurately iron core 2 arrive the first service position (b position) by middle drive coil 4, and can realize independent control.Certainly, as shown in Figure 4, also can not be provided with drive coil in the second annular dead slot 105, can realize also that by upper drive coil 3 and lower drive coil 6 moving iron core 2 arrives the first service position (b position).
Further, Fig. 9 shows the third driving mechanism according to the utility model embodiment, as shown in Figure 9, the main distinction of the first driving mechanism among the third driving mechanism and Fig. 4 is, be provided with magnetic conductive part 29 between described permanent magnet 5 and the moving iron core 2, magnetic conductive part 29 for example is magnetic guiding loop.Magnetic conductive part 29 is made by ferrimagnet, and the magnetic line of force is led, and has strengthened the intensity of magnetic circuit.
Once mechanism of the present utility model and the course of work are described below:
When moving iron core 2 during at position b shown in Figure 4 and the equal no power of all coils, Distribution of Magnetic Field as shown in Figure 5.Obviously, this moment, moving iron core 2 was in stable position, and namely moving iron core is subject to external disturbance and when departing from a little this position, the moving suffered magnetic force of iron core can drive it and get back to this stable position.In this stable position, namely the first service position passes into suitable electric current for each drive coil, and moving iron core 2 just is subject to downward magnetic force, drives drive rod 7 beginnings and moves to stable position c.After moving to position c, cut off the electric current of all coils, moving iron core 2 just is pull-in on the lower end of static iron core 1 under the effect of the magnetic field force that permanent magnet 5 provides, thereby be stabilized on the c of position, the Distribution of Magnetic Field schematic diagram of this mechanism as shown in Figure 6 at this moment, obviously this position is a stable position, and the suction-combining force of permanent magnet will provide the stronger required confining force of switch combined floodgate.In like manner, as long as pass into respectively suitable electric current in drive coil, moving iron core 2 will move from position c to position b under the magnetic field force effect, thereby get back to position b.
When moving iron core 2 and drive rod 7 are stabilized in position b, as long as pass into respectively suitable electric current in drive coil, moving iron core 2 will begin to move from position b to position a under the magnetic field force effect.Behind a of position, cut off the electric current of all coils, moving iron core 2 just is pull-in on the upper end of static iron core 1 under the effect of the magnetic field force that permanent magnet provides, thereby be stabilized on a of position, the Distribution of Magnetic Field schematic diagram of this mechanism as shown in Figure 7 at this moment, obviously this position is a stable position, and the suction-combining force of permanent magnet is with the required confining force of switch combined floodgate that provides.At this moment, as long as the electric current in the appropriate change drive coil, moving iron core 2 will move from position a to position b under the magnetic field force effect this moment, thereby get back to position b.So far, this mechanism has finished a complete duty cycle.
Driving mechanism of the present utility model switches between three service positions at a, b, c by the moving iron core 2 of control drive coil electric current actuating.The number of upper drive coil 3 and lower drive coil 6 all can be set to one or more; Middle drive coil 4 can be set to one or more, also can not arrange.The energising direction of each drive coil can adopt forward current or reverse current according to actual needs, to drive moving iron core 2.
The above only is the schematic embodiment of the utility model, is not to limit scope of the present utility model.For each part of the present utility model can make up under the condition of not conflicting mutually; any those skilled in the art; the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. driving mechanism, it is characterized in that, described driving mechanism comprises: static iron core (1), moving iron core (2), upper drive coil (3), permanent magnet (5) and lower drive coil (6), described static iron core (1) has inner chamber, described inner chamber comprises: the upper surface, the moving iron core mobile space of lower surface and the cylindricality between described upper surface and described lower surface, mobile being arranged on of described moving iron core (2) also has the first service position at least in the described moving iron core mobile space
Described static iron core (1) also comprises: spaced apart and be enclosed in respectively the outer a plurality of annular dead slot of described inner chamber from top to bottom, described upper drive coil (3) and described lower drive coil (6) are set in respectively outside the described moving iron core by described annular dead slot; Described static iron core (1) also comprises: be enclosed in described inner chamber outward and be positioned at also first annular boss (104) of two annular dead slots of separating adjacent of described static iron core (1) middle part;
Described moving iron core (2) comprises at least: from top to bottom a plurality of grooves spaced apart, and the Fourth Ring shape boss (204) that is positioned at described moving iron core (2) middle part and two described grooves of separating adjacent,
In described the first service position, described the first annular boss and described Fourth Ring shape boss are combined to form magnetic circuit diametrically mutually, the upper surface of described moving iron core (2) is away from the upper surface of described inner chamber, and the lower surface of described moving iron core (2) is away from the lower surface of described inner chamber.
2. driving mechanism as claimed in claim 1 is characterized in that,
Described a plurality of annular dead slot is: spaced apart and be enclosed in respectively described moving iron core mobile space outer the first annular dead slot, the second annular dead slot and the 3rd annular dead slot from top to bottom, described upper drive coil (3) is arranged in the described first annular dead slot, and described lower drive coil (6) is arranged in the described the 3rd annular dead slot; Described the first annular boss (104) is separated the described first annular dead slot and the second annular dead slot, described static iron core (1) also comprises: it is outer and separate second annular boss (106) of the described second annular dead slot and described the 3rd annular dead slot to be enclosed in described moving iron core mobile space, is provided with the space that holds described permanent magnet (5) between described the second annular boss (106) and the described moving iron core mobile space;
Described moving iron core (2) also comprises: the 3rd annular boss (202) and the five rings shape boss (206) that lay respectively at described Fourth Ring shape boss (204) above and below, the upper surface of described moving iron core (2) is positioned on described the 3rd annular boss (202), the lower surface of described moving iron core (2) is positioned on the described five rings shape boss (206), and described moving iron core (2) also comprises: be positioned at the first groove between described the 3rd annular boss (202) and the described Fourth Ring shape boss (204) and be positioned at the second groove between described Fourth Ring shape boss (204) and the described five rings shape boss (206);
Described moving iron core (2) also has the second service position and the 3rd service position,
In described the first service position, described the first annular boss and described Fourth Ring shape boss are combined to form the first magnetic circuit diametrically mutually, described five rings shape boss and described the second annular boss are combined to form the second magnetic circuit diametrically mutually, described the first magnetic circuit and described the second communicated magnetic circuit, described the 3rd annular boss is away from the upper surface of described inner chamber, and described five rings shape boss is away from the lower surface of described inner chamber;
In described the second service position, fit and form the 3rd magnetic circuit in the lower surface of described five rings shape boss and described inner chamber, described five rings shape boss and described the second annular boss are combined to form the 4th magnetic circuit diametrically mutually, described the 3rd magnetic circuit and described the 4th communicated magnetic circuit, described the 3rd annular boss is away from the upper surface of described inner chamber, described Fourth Ring shape boss and described the first annular boss stagger diametrically mutually
In described the 3rd service position, fit and form the 5th magnetic circuit in the upper surface of described the 3rd annular boss and described inner chamber, described five rings shape boss and described the second annular boss are combined to form the 6th magnetic circuit diametrically mutually, described the 5th magnetic circuit and described the 6th communicated magnetic circuit, described the 3rd annular boss and described the first annular boss stagger diametrically mutually, and described five rings shape boss is away from the lower surface of described inner chamber.
3. driving mechanism as claimed in claim 2 is characterized in that, also is provided with middle drive coil (4) in the described second annular dead slot.
4. driving mechanism as claimed in claim 1 is characterized in that, is provided with magnetic conductive part between described permanent magnet (5) and the moving iron core (2).
5. driving mechanism as claimed in claim 2 is characterized in that, the height of described Fourth Ring shape boss is more than or equal to the height of described the first annular boss.
6. driving mechanism as claimed in claim 2 is characterized in that, described moving iron core (2) is symmetrical structure.
7. driving mechanism as claimed in claim 2 is characterized in that, the height of described five rings shape boss is greater than the height sum of the described the 3rd annular dead slot and described the second annular boss.
8. driving mechanism as claimed in claim 2 is characterized in that, the height of described the first annular dead slot is greater than the height sum of described the 3rd annular boss and described the first groove.
9. driving mechanism as claimed in claim 1, it is characterized in that, described driving mechanism also comprises: be connected to the up and down drive rod at two ends (7) of described moving iron core (2), described static iron core (1) also comprises: be arranged on described inner chamber up and down two ends and the perforation that is communicated with described inner chamber, described drive rod (7) is mobile to be arranged in the described perforation, and the bore of described perforation is greater than the bore of described drive rod (7) but less than the bore of described moving iron core.
10. driving mechanism as claimed in claim 2 is characterized in that, described the first annular boss is concordant with the inner edge of described permanent magnet (5) and extend to the outer ledge of described moving iron core mobile space; Described the 3rd annular boss, Fourth Ring shape boss is concordant with the outer rim of five rings shape boss and extend to the inside edge of described moving iron core mobile space.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220370510 CN202736857U (en) | 2012-07-27 | 2012-07-27 | Driving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220370510 CN202736857U (en) | 2012-07-27 | 2012-07-27 | Driving mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789928A (en) * | 2012-07-27 | 2012-11-21 | 北京电研华源电力技术有限公司 | Driving mechanism |
| CN103578802A (en) * | 2013-11-14 | 2014-02-12 | 国家电网公司 | Permanent magnetic spring rectilinear motion device |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN110778774A (en) * | 2018-07-31 | 2020-02-11 | 浙江三花智能控制股份有限公司 | Electromagnetic driving device and gas proportional valve with same |
| CN111033669A (en) * | 2017-08-21 | 2020-04-17 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
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2012
- 2012-07-27 CN CN 201220370510 patent/CN202736857U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789928A (en) * | 2012-07-27 | 2012-11-21 | 北京电研华源电力技术有限公司 | Driving mechanism |
| CN102789928B (en) * | 2012-07-27 | 2015-05-13 | 北京电研华源电力技术有限公司 | Driving mechanism |
| CN103578802A (en) * | 2013-11-14 | 2014-02-12 | 国家电网公司 | Permanent magnetic spring rectilinear motion device |
| CN103578802B (en) * | 2013-11-14 | 2016-04-20 | 国家电网公司 | A kind of permanent magnetic spring linear motion device |
| CN111033669A (en) * | 2017-08-21 | 2020-04-17 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
| CN111033669B (en) * | 2017-08-21 | 2021-11-09 | 三菱电机株式会社 | Electromagnetic operating mechanism and circuit breaker |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
| CN110778774A (en) * | 2018-07-31 | 2020-02-11 | 浙江三花智能控制股份有限公司 | Electromagnetic driving device and gas proportional valve with same |
| CN110778774B (en) * | 2018-07-31 | 2023-03-31 | 浙江三花智能控制股份有限公司 | Electromagnetic driving device and gas proportional valve with same |
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