CN205354790U - Convertible magnetic circuit list fixed position's magnet device - Google Patents

Abstract

The utility model provides a convertible magnetic circuit list fixed position's magnet device, includes: a shell, its left and right both sides form first, two sides respectively, and the inner edge face of a first side cooperation left surface unshakable in one's determination, and it can be rather than the holding face of laminating each other to be equipped with one, a permanent magnet, its inside and outside side is first type magnetic pole of different magnetics and second type magnetic pole respectively, an axial pipe that does not possess the magnetic conductivity for supply left side section portion holding unshakable in one's determination wherein, its right side end has the second side that an opening extended to the shell, a spring is used for providing elastic reaction power right unshakable in one's determination. Borrow this to the fixed design of double magnetic circuit and unilateral absorption, application permanent magnet's magnetic circuit change and assisting of spring make normality unshakable in one's determination keep in preset position, make it have great free path, enlarge product application range, and when the article had error or loss, its stroke of automatic adjustment was guaranteed the product and is reliably spent. The utility model discloses with less power, reach change fixed position, have the sparingly efficiency of electric energy.

Description

The magnet arrangement of changing magnetic-path list fixed position

Technical field

This utility model is the structure that the magnet arrangement about a kind of changing magnetic-path list fixed position, espespecially a kind of double magnetic circuit and monolateral absorption are fixing so that it is have the magnet arrangement of bigger free travel.

Background technology

Magnetic field effect has been widely used on the products such as electromagnetic valve (Valves), solenoid (Solenoids), relay (Relay)；And existing electromagnetic valve structure, when it is mainly by coil excitation, produced magnetic force attracts iron core, and then reaches the purpose of Open valve；But looking into, the electromagnetic valve of this type, make electromagnetic valve be held open state, it is necessary to lasting makes coil excitation, could be held to a side by iron core by coil magnetic force, therefore, the consumption of its power supply obviously must increase；Furthermore, long-time logical excitatory to hold iron core (1F), not only waste electric energy, and overheat of solenoid valve can be made hot, easily cause short circuit or burn, tool danger, and reduce service life for its disappearance.

For this, inventor is in the U.S. the 6th, 246, in No. 131 " MagneticPowerApparatus " patents, disclose the magnet arrangement 100 of a kind of pair of fixed position, it mainly constructs as illustrated in figures ia and ib, including: a shell body 101, one coil 102, one iron core 103, one permanent magnet 104, and it is left, right two holding faces 105, 106 are constituted, when coil 102 is excitatory, this iron core 103 is forced to be subject to the magnetic force of this coil 102 and the magneticaction of this permanent magnet 104, and present to push away to the left and be adsorbed on this left holding face 105, or present to push away to the right and be adsorbed on this right holding face 106；This case is characterized by left and right pair of fixed position, the two-way magnetic force all utilizing permanent magnet 104 is to produce retentivity, therefore continuous galvanization it is not necessary to, not only can save electric energy, and not hot overheated or short circuit burns, danger can be avoided and increase the effect in service life, the disappearance of above-mentioned existing electromagnetic valve can be improved.But look into, this case has a left side, right two holding faces 105, the feature of double, two fixed positions of 106, though there being above-mentioned advantage, but double, two fixed positions also result in a left side for this iron core 103, right lateral journey (D) is restricted, that is, this one end of this right holding face 106 is an enclosed construction 107, if it is left, right lateral journey (D) is 5mm, then no matter iron core 103 is the distance moved to the left or to the right must be the fixed journey system of whole 5mm, will not be 4.9mm or 5.1mm, thus, it is subject to the object (not shown) of 103 brakings unshakable in one's determination when having error or loss, then can cause and object cannot be made completely to close or arrive the disappearance in precalculated position.And whether the permanent magnet 104 shown in Figure 1A and Figure 1B is column, unshakable in one's determination 103 outer peripheral edges being positioned at permanent magnet 104, have above-mentioned problem points, even the permanent magnet in this case disclosed by another embodiment is ring-type, iron core is positioned at the structure of the inner peripheral of permanent magnet, owing to this one end of this right holding face 106 is also an enclosed construction 107, therefore can cause the distance moved right equally must be fixed journey system, still have and object cannot be made completely to close or arrive the disappearance in precalculated position, therefore still have and improve space.

Therefore the applicant solves to control oneself in the 6th, 246, No. 131 patent of the U.S. having further, the movement of this iron core 103 is the problems referred to above point of fixed journey system (D), is for major subjects of the present utility model.

Utility model content

Technical problem underlying to be solved in the utility model is in that, overcome the drawbacks described above that prior art exists, and the magnet arrangement of a kind of changing magnetic-path list fixed position is provided, its design fixed with double magnetic circuit and monolateral absorption, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet and the auxiliary of spring, this iron core normality can be made to be held in precalculated position, the structure that this kind of double magnetic circuit and monolateral absorption are fixed, make it have bigger free travel, scope is used except product can be expanded, when more can have error or loss at object, automatically its stroke is adjusted, there is the effect guaranteeing production reliability；It with less power, can reach to change the function of left and right fixed position, has the effect saving electric energy.

This utility model solves its technical problem and be the technical scheme is that

A kind of magnet arrangement of changing magnetic-path list fixed position, including: a shell, the inner peripheral of this shell is equipped with a coil, and center of inside is reserved with space and is available for an iron core and does the left and right displacement of diverse location in its axial direction, this iron core has at least needed part body and this coil inner edge to be coupled when normality again；One drive circuit, is installed in a side of shell, in order to provide this coil one pulse voltage, excitatory change magnetic force direction, makes this iron core change position, to constitute the magnet arrangement of an o kenel；It is characterized in that:

The arranged on left and right sides of this shell forms a first side and a second side, this shell and first and second side respectively and is all made up of magnetic conductivity material, and the inner edge surface of this first side coordinates the left surface of this iron core, be provided with one can be bonded to each other with it holding face；One permanent magnet, the first type magnetic pole of the medial and lateral of this permanent magnet respectively different magnetic and Second-Type magnetic pole, and this Second-Type magnetic pole contacts magnetic conduction with the second side of this shell, the inner peripheral of this permanent magnet again, right section of portion of this iron core of confession stretches through coupling；One tube axial not having magnetic conductivity, this tube axial is accommodating wherein with the left section of portion for this iron core,

And its right-hand end has an opening, this opening extends to the second side of this shell, and the right flank being available for this iron core passes this second side；And a spring, this spring is located at the precalculated position of this iron core, in order to provide this iron core one day active force to the right；

Whereby, when this coil is not excitatory, the magnetic line of force of this permanent magnet by this first type magnetic pole (N) through this iron core → this second side, return this Second-Type magnetic pole (S), form the small-sized extrapolation magnetic circuit of a closing, it is provided that this iron core one magnetic force to the right, and coordinate this spring to provide this iron core one elastic force to the right, make this iron core when this coil is not excitatory, can normality keep in keeping right position；Again when this drive circuit exports a pulse voltage, this coil excitation produces the magnetic force more than this permanent magnet, the magnetic force making this permanent magnet turns to the magnetic force direction following this coil, by this first type magnetic pole (N) → this iron core → this holding face → this first side → this shell → this second side, return this Second-Type magnetic pole (S), formed one closing large-scale in push away magnetic circuit, this iron core is forced to be subject to this coil magnetic force and this magnetic force of permanent magnet and push away to the left, the left surface making this iron core is absorbed and fixed in this holding face, make this coil need not be excitatory again, can normality keep in keeping left position；Accordingly, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet and the auxiliary of this spring, this iron core normality can be made to be held in precalculated position, be not necessary to continuous drain.

According to front taking off feature, this iron core can include the left section portion magnetically permeable by one and a right section of not magnetically permeable portion, is mutually combined respectively again and is configured to preferably after molding.

According to front taking off feature, this drive circuit can include: a power supply output line is connected with aforementioned coil, a positive pulse voltage is exported during its power-on, produce a discharge current and export a negative pulse voltage after closing power supply, utilize this flashy positive or negative pulse voltage, it is provided that this coil completes excitatory change magnetic force direction, this iron core is produced thrust or pulling force makes its displacement, and force this permanent magnet conversion magnetic circuit, make this iron core normality be held in precalculated position.

According to front taking off feature, the first type magnetic pole of this permanent magnet is N pole, and Second-Type magnetic pole is S pole, and the first type magnetic pole (N pole) of this permanent magnet can be provided with a magnetic guiding loop.

In a possible embodiments, this holding face may be provided in the end face of the cylinder that this inner edge, first side is formed, and this cylinder be axially arranged with a through hole；This second side also includes connecting a valve body, this valve body is relative to the right flank of this iron core, it is provided with an air chamber, this air chamber connects with an air inlet and a gas outlet respectively, and the right flank right side of this iron core contact can close this air inlet when pushing away, furthermore, this iron core is provided with an air guide port, the arrival end in this inducing QI aperture connects with this air chamber, with the gas by being back to this air chamber by this gas outlet, after importing this iron core by the arrival end of this air guide port, via the axially extending bore of this cylinder, it is vented to outside this first side.

By on take off technological means, this utility model gets rid of the U.S. the 6th, 246, in No. 131 patents, right edge is the design of an enclosed construction 107, change with the design of " double magnetic circuit and monolateral absorption are fixed ", by changing magnetic force direction, use the magnetic circuit change of this permanent magnet and the auxiliary of this spring, this iron core normality can be made to be held in precalculated position, the structure of this kind " double magnetic circuit and monolateral absorption are fixed ", make it have bigger free travel, scope is used except product can be expanded, when more can have error or loss at object, automatically its stroke is adjusted, there is the effect guaranteeing production reliability.Furthermore, assist with this spring and coordinate the magnetic circuit of this permanent magnet to change so that this utility model with less power, can reach to change the function of fixed position, have the effect saving electric energy.

The beneficial effects of the utility model are, its design fixed with double magnetic circuit and monolateral absorption, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet and the auxiliary of spring, this iron core normality can be made to be held in precalculated position, the structure that this kind of double magnetic circuit and monolateral absorption are fixed, make it have bigger free travel, use scope except product can be expanded, when more can have error or loss at object, automatically adjust its stroke, there is the effect guaranteeing production reliability；It with less power, can reach to change the function of left and right fixed position, has the effect saving electric energy.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, this utility model is further illustrated.

Figure 1A is the organigram of existing a kind of pair of Motionless electromagnetic valve, the state that its display iron core moves right.

Figure 1B is the organigram of existing a kind of pair of Motionless electromagnetic valve, and its display is unshakable in one's determination to the state moved to left.

Fig. 2 A is the structure cut-away view of this utility model one possible embodiments, the position that its display iron core moves right.

Fig. 2 B is the structure cut-away view of this utility model one possible embodiments, and its display is unshakable in one's determination to the position moved to left.

Fig. 3 A be Fig. 2 A not excitatory time magnetic line of force schematic diagram.

Fig. 3 B be positive pulse voltage excitatory open time magnetic line of force schematic diagram.

Fig. 3 C is that iron core is moving to left ongoing magnetic line of force schematic diagram.

Fig. 3 D is the magnetic line of force schematic diagram after iron core moves to left.

Fig. 3 E be negative pulse voltage excitatory open time magnetic line of force schematic diagram.

Fig. 3 F is the magnetic line of force schematic diagram after this utility model iron core moves to right.

Fig. 4 A is this utility model is that the one of electromagnetic valve kenel uses state diagram, and its display iron core moves to right.

Fig. 4 B is this utility model is that the one of electromagnetic valve kenel uses state diagram, and its display iron core moves to left.

Fig. 5 A is this utility model be electromagnetic valve kenel another kind use state diagram, its display iron core move to right air inlet close.

Fig. 5 B is this utility model be electromagnetic valve kenel another kind use state diagram, its display iron core move to left air inlet and unlatching of giving vent to anger.

Fig. 5 C is this utility model is that the another kind of electromagnetic valve kenel uses state diagram, and its display iron core moves to right air inlet closedown and aerofluxus and opens.

Number in the figure illustrates:

10 shells

11 first sides

11a cylinder

11b through hole

12 second sides

13 holding faces

20 coils

30 is unshakable in one's determination

Right section of portion of 30R

Left section of portion of 30L

31 left surfaces

32 right flanks

33 body flanges

34 air guide ports

40 drive circuits

41 power supply output lines

50 permanent magnets

51 first type magnetic poles

52 Second-Type magnetic poles

53 magnetic guiding loops

60 tube axials

61 openings

70 springs

80 valve bodies

81 air inlets

82 air chambers

83 gas outlets

90 magnet arrangements

90A electromagnetic valve

Magnetic circuit is pushed away in L is large-scale

The small-sized extrapolation magnetic circuit of R

Detailed description of the invention

First, refer to Fig. 2 A and Fig. 2 B, wherein Fig. 2 A is the position that iron core moves right, Fig. 2 B is unshakable in one's determination to the position moved to left, the magnet arrangement 90 of the changing magnetic-path disclosed by this utility model, including: a shell 10, the inner peripheral of this shell 10 is equipped with a coil 20, and center of inside is reserved with space and is available for an iron core 30 and does the left and right displacement of diverse location in its axial direction, this iron core 30 has at least needed part body and this coil 20 inner edge to be coupled when normality again；One drive circuit 40, is installed in a side of shell 10, in order to provide this coil 20 1 pulse voltage, excitatory change magnetic force direction, makes this iron core 30 change position, to constitute the magnet arrangement 90 of an o kenel；But, above structure belongs to prior art (priorart), non-patent purpose of the present utility model, holds and does not repeat.

Be with, of the present utility model it is characterised by: the arranged on left and right sides of this shell 10 forms first side 11 and a second side 12 respectively, this shell 10 and first and second limit, side 11,12 are all made up of magnetic conductivity material, and the inner edge surface of this first side 11 coordinates the left surface 31 of this iron core 30, be provided with one can be bonded to each other with it holding face 13；One permanent magnet 50, first type magnetic pole 51 of the medial and lateral of this permanent magnet 50 respectively different magnetic and Second-Type magnetic pole 52, and this Second-Type magnetic pole 52 contacts magnetic conduction with the second side 12 of this shell, in the present embodiment, this the first type magnetic pole 51 is N pole, and Second-Type magnetic pole 52 is S pole；The inner peripheral of this permanent magnet 50 again, stretches through coupling for right section of portion 30R of this iron core 30；In the present embodiment, this iron core 30 is by an a magnetically permeable left section of portion 30L and right section of not magnetically permeable portion 30R, and after molding, recombinant is configured to best respectively, but is not limited to this.This iron core 30 also can be constituted by magnetically permeable material is one-body molded, but the external diameter of right section of portion 30R of this iron core 30 need to less than left section of portion 30L, avoid external diameter excessive and change the path of predetermined magnetic force, that is as shown in Figure 3 C, unshakable in one's determination 30 are made to move to left the ongoing magnetic line of force (in figure shown in solid arrow), can be entered by the S pole of Second-Type magnetic pole 52 smoothly, then by the first type magnetic pole 51 be N pole out, enter back into left section of portion 30L of this iron core 30.Certainly, if this right section of portion 30R is constituted by not magnetically permeable material, then the path of the magnetic line of force is inevitable as shown in Figure 3 C.

Furthermore, this iron core 30, relative to the opposite side of left surface 31, has a right flank 32.In a preferred embodiment, this left surface 31 and right flank 32 have a plane, can be resisted against holding face 13 or predetermined position, certainly, plane can be embedded with colloid on demand, to increase adaptation, as shown in Figure 5 A to FIG. 5 C.

One tube axial 60 not having magnetic conductivity, this tube axial 60 is accommodating wherein with the left section of portion 30L for this iron core 30, and its right-hand end has an opening 61, this opening 61 extends to the second side 12 of this shell 10, and the right flank 32 being available for this iron core 30 passes this second side 12；And a spring 70, this spring 70 is located at the precalculated position of this iron core 30, in order to provide these 30 one day unshakable in one's determination active force to the right.In the present embodiment, the outside of right section of portion 30R of this iron core 30 is provided with a body flange 34, and this spring 70 is set in right section of portion 30R of this iron core 30, and the opening 61 of its inner this tube axial 60 of contact, this body flange 34 of outer end contact, whereby, is provided that active force to the right on these 30 one day unshakable in one's determination.Certainly, this spring 70 does not limit and is arranged on this position, for instance: this spring 70 is located between the left surface 31 of this iron core 30 and holding face 13, also can provide these 30 one day unshakable in one's determination active force to the right, hold do not repeat.

By on take off composition, as shown in Figure 2 A, when this coil 20 is not excitatory, the magnetic line of force of this permanent magnet 50 by this first type magnetic pole 51 (N) through this iron core 30 → this second side 12, return this Second-Type magnetic pole 52 (S), form the small-sized extrapolation magnetic circuit (R) of a closing, this iron core 30 1 magnetic force to the right is provided, and coordinate this spring 70 to provide this iron core 30 1 elastic force to the right, make this iron core 30 when this coil 20 is not excitatory, can normality keep in keeping right position.This utility model one is characterized by that the right flank 32 of this iron core 30 is not such as existing apparatus, the right edge institute restriction site closed by one, the right flank 32 of this iron core 30 can be extended through this second side 12, therefore the degree of freedom of its stroke (D) is bigger, such as: the second side 12 of magnet arrangement 90 is in conjunction with a valve body 80, air inlet 81 distance of this valve body 80 is if any error or loss, the right flank 32 of this iron core 30 can adjust its stroke (D) on demand, that is this right flank 32 right side when pushing away can this air inlet 81 urgent, to guarantee reliability and the precision that product uses.

Again, as shown in Figure 2 B, when this drive circuit 40 exports a pulse voltage, this excitatory generation of coil 20 is more than the magnetic force of this permanent magnet 50, the magnetic force making this permanent magnet 50 turns to the magnetic force direction following this coil 20, by this first type magnetic pole 51 (N) → this iron core 30 → this holding face 13 → this 11 → this shell 10 → this second side 12, first side, return this Second-Type magnetic pole 52 (S), formed one closing large-scale in push away magnetic circuit (L), this iron core 30 is forced to be subject to this coil magnetic force and this magnetic force of permanent magnet and push away to the left, the left surface 31 making this iron core 30 is absorbed and fixed in this holding face 13, make this coil 20 need not be excitatory again, can normality keep in keeping left position；Accordingly, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet 50 and the auxiliary of this spring 70, these 30 normalities unshakable in one's determination can be made to be held in precalculated position, be not necessary to continuous drain.

In the present embodiment, the first type magnetic pole 51 (N) of this permanent magnet 50 can be provided with a magnetic guiding loop 53, to strengthen magnetomechanical effects, that is, after the magnetic line of force of the N pole of this first type magnetic pole 51 first passes through this magnetic guiding loop 53, then import unshakable in one's determination 30, strengthen magnetomechanical effects according to this.If the magnetic force of permanent magnet 50 is enough strong certainly, then can without magnetic guiding loop 53；But most ferrum device volume all makes every effort to reduce, therefore visual purposes is without magnetic guiding loop 53, to reduce volume, reduces cost.

For becoming apparent from illustrating to take off in Fig. 2 A and Fig. 2 B, the situation that the magnetic circuit of this permanent magnet 50 changes, please coordinate shown in Fig. 3 A to Fig. 3 F, wherein Fig. 3 A be Fig. 2 A not excitatory time magnetic line of force view, that is when electrical power is off, this coil 20 is not excitatory, now the magnetic line of force of this permanent magnet 50 by the first type magnetic pole (N) through magnetic guiding loop 53 → 30 → second side 12 unshakable in one's determination, return Second-Type magnetic pole (S), form the small-sized extrapolation magnetic circuit (R) of a closing, figure is shown in dotted line the magnetic line of force path characteristics of this permanent magnet 50；Accordingly, this permanent magnet 50 is made to provide this iron core 30 thrust to the right (PUSH).

Then, the magnetic line of force state diagram of supply one (just) excitatory unlatching of pulse voltage shown in Fig. 3 B,

That is when an appropriate voltage puts on coil 20, produce the magnetic force (in figure shown in solid arrow) more than permanent magnet 50, the magnetic force path (shown in dotted line) of order permanent magnet 50 originally is offseted, the magnetic force making permanent magnet 50 turns to the magnetic force direction following coil 20, unshakable in one's determination 30 are forced to be subject to coil magnetic force and magnetic force of permanent magnet, and present the process to left translation as shown in Figure 3 C, the now magnetic force direction (in figure shown in solid arrow) of coil 20, the shortest path can be walked, therefore can unshakable in one's determination 30 to after left dislocation, can make into as shown in Figure 3 C in the magnetic force path shown in original Fig. 3 B, entered by the Second-Type magnetic pole 52 (S) of this permanent magnet 50, and by the first type magnetic pole 51 (N) out, then, unshakable in one's determination 30 are left shifted by the position shown in Fig. 3 D.So far, 230 need of ferrum by permanent magnet 50 by the first type magnetic pole 51 (N) → through magnetic guiding loop 53 → 11 → shell, 10 → second side, 30 → holding face, 13 → first side 12 unshakable in one's determination, return the closing of Second-Type magnetic pole 52 (S) large-scale in push away magnetic circuit (L), it is possible to keep with fixing on this position；Coil 20 now need not be excitatory again, maintenance can hold in this position so that iron core 30 keeps left.

Supply the magnetic line of force state diagram of one (bearing) the excitatory unlatching of pulse voltage as shown in FIGURE 3 E, owing to unshakable in one's determination 30 on the left side, as made it move to right, then the magnetic line of force path of coil 20 must in contrast to the magnetic force of permanent magnet line direction shown in Fig. 3 D, be with, if it is positive pulse voltage that Fig. 3 B supplies coil 20, then Fig. 3 E is a negative pulse voltage, so that its magnetic line of force path (in figure shown in solid arrow) produces, to unshakable in one's determination 30, the effect that a kind of right side pushes away, and in contrast to the magnetic force path (shown in dotted line) of permanent magnet 50, the magnetic force path making permanent magnet 50 originally is offseted and is produced holding face 13 rejection, and continue and move to the right the position shown in Fig. 3 F, now, coil 20 is without continued power, because the magnetic line of force is to walk nearest path；So far, 30 unshakable in one's determination need permanent magnet 50 by the first type magnetic pole 51 (N) through magnetic guiding loop 53 → 30 → second side 12 unshakable in one's determination, return Second-Type magnetic pole 52 (S), form the small-sized extrapolation magnetic circuit (R) of a closing, this iron core 30 1 magnetic force to the right is provided, and coordinate this spring 70 to provide this iron core 30 1 elastic force to the right, this iron core 30 is made to be returned to state as shown in Figure 3A, when this coil 20 is not excitatory, can often make the 30 maintenances unshakable in one's determination state in position of keeping right.Therefore spring 70 of the present utility model provides the power-assisted making 30 right sides unshakable in one's determination push away when the right side pushes away, though and some resistances can be increased when 30 left sides unshakable in one's determination push away, but this elastic resistance is very little relative to this magnetic force；Furthermore spring 70 of the present utility model is arranged in pairs or groups the design of this double magnetic circuit, when making these 30 right sides unshakable in one's determination push away, it is only necessary to only small power can make 30 right sides unshakable in one's determination push away.Therefore have the effect saving electric energy on the whole.

Taken off embodiment to show learn from above, greatest feature of the present utility model is the position that the magnetic force produced with coil 20 changes unshakable in one's determination 30, and the magnetic line of force has the characteristic of shortest path, therefore, also change the magnetic circuit of permanent magnet 50 simultaneously, if no longer adding reverse winding magnetic force, then unshakable in one's determination 30 can be maintained on that position because of the magnetic force of permanent magnet 50.

As for, the drive circuit 40 of the excitatory unlatching of this utility model, can such as Fig. 2 A, shown in Fig. 2 B, it is installed in the suitable place of shell 10 side, or independent installing on demand, again its power supply output line 41 is connected with coil 20, a positive pulse voltage is exported during its power-on, produce a discharge current and export a negative pulse voltage after closing power supply, utilize this flashy positive or negative pulse voltage, this coil 20 is provided to complete excitatory change magnetic force direction, this iron core 30 is produced thrust or pulling force makes its displacement, and force this permanent magnet 50 to convert magnetic circuit, these 30 normalities unshakable in one's determination are made to be held in precalculated position.But, the charge and discharge principle of drive circuit 40 and framework are prior art, hold and do not repeat.

Fig. 4 A, Fig. 4 B are this utility model is that the one of electromagnetic valve 90A kenel uses state diagram, this second side 12 also includes connecting a valve body 80, this valve body 80 is relative to the right flank 32 of this iron core 30, it is provided with an air chamber 82, this air chamber 82 connects with a gas outlet 83 with an air inlet 81 respectively, and right flank 32 right side of this iron core 30 contact can close this air inlet 81 when pushing away, as shown in Figure 4 A.Again as shown in Figure 4 B, when these 30 left sides unshakable in one's determination push away, this air inlet 81 is opened so that after gas enters this air chamber 82, imports predetermined object 84 (as shown in Figure 5 C) via gas outlet 83, to constitute the use kenel of an electromagnetic valve 90A.

Furthermore, Fig. 5 A, Fig. 5 B, Fig. 5 C are this utility model be electromagnetic valve 90A kenel another kind use state diagram, this kind of embodiment is so-called " two three mouthfuls ", and it is provided with an air guide port 33 further on this iron core 30, and the arrival end of this air guide port 33 connects with this air chamber 82.Accordingly, Fig. 5 A is that to close this air inlet 81, Fig. 5 B be that this air inlet 81 is opened for the right flank 32 of this iron core 30, after gas enters this air chamber 82, imports a predetermined object 84 via this gas outlet 83；This object 84 is if belonging to a kind of structure that can discharge gas, then must be as shown in Figure 5 C, aerofluxus by this object 84, it is back to this air chamber 82 again through this gas outlet 83, arrival end via this air guide port 33, import after in this iron core 30, axially extending bore 11b via this cylinder 11a (should in the present embodiment, through hole 11b can be used as a steam vent), it is vented to this first side 11 outside, whereby, smoothly the gas of object 84 is discharged, be with, structure of the present utility model is particularly well-suited to the electromagnetic valve 90A of this " two three mouthfuls ", it has simple in construction but reliability is high, and there is no the residual magnetism problem of general electromagnetic valve.Certainly, the magnet arrangement 90 of this utility model changing magnetic-path, except being useful in electromagnetic valve 90A, also it is useful on the products such as relay, holds and do not repeat.

By on take off technological means, this utility model pushes away the double magnetic circuit of magnetic circuit (L) and the design that monolateral absorption is fixing with a small-sized extrapolation magnetic circuit (R) closed and one in large-scale, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet 50 and the auxiliary of this spring 70, these 30 normalities unshakable in one's determination can be made to be held in precalculated position, the structure of this kind " double magnetic circuit and monolateral absorption are fixed ", make it have bigger free travel, expand product and use scope, when more can have error or loss at object, automatically its stroke is adjusted, guarantee production reliability, specifically and effectively solve the U.S. the 6th, 246, in No. 131 patents, right edge is the problem points of an enclosed construction 107.Furthermore, this utility model with less power, can reach to change fixed position, have the effect saving electric energy.

The above, it it is only preferred embodiment of the present utility model, not this utility model is done any pro forma restriction, every any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still falls within the scope of technical solutions of the utility model.

In sum, this utility model is in structural design, use practicality and cost benefit, needed for complying fully with industry development, and disclosed structure is also have unprecedented innovative structure, there is novelty, creativeness, practicality, meet the regulation about new patent important document, therefore mention application in accordance with the law.

Claims (9)

1. a magnet arrangement for changing magnetic-path list fixed position, including:

One shell, the inner peripheral of this shell is equipped with a coil, and center of inside is reserved with space and is available for an iron core and does left and right displacement in its axial direction, and this iron core has at least needed part body and this coil inner edge to be coupled when normality again；

One drive circuit, is installed in a side of shell, in order to provide this coil one pulse voltage, excitatory change magnetic force direction, makes this iron core change position, constitutes the magnet arrangement of an o kenel according to this；It is characterized in that:

The arranged on left and right sides of this shell forms a first side and a second side, this shell and first and second side respectively and is all made up of magnetic conductivity material, and the inner edge surface of this first side coordinates the left surface of this iron core, is provided with a holding face bonded to each other with it；

One permanent magnet, the first type magnetic pole of the medial and lateral of this permanent magnet respectively different magnetic and Second-Type magnetic pole, and this Second-Type magnetic pole contacts magnetic conduction with the second side of this shell, the inner peripheral of this permanent magnet again, right section of portion of this iron core of confession stretches through coupling；

One tube axial not having magnetic conductivity, this tube axial is accommodating wherein with the left section of portion for this iron core, and its right-hand end has an opening, and this opening extends to the second side of this shell, and the right flank for this iron core passes this second side；And

One spring, this spring is located at the precalculated position of this iron core, in order to provide this iron core one day elastic acting force to the right；

Whereby, when this coil is not excitatory, the magnetic line of force of this permanent magnet by this first type magnetic pole through this iron core → this second side, return this Second-Type magnetic pole, form the small-sized extrapolation magnetic circuit of a closing, it is provided that this iron core one magnetic force to the right, and coordinate this spring to provide this iron core one elastic force to the right, make this iron core when this coil is not excitatory, can normality keep in keeping right position；Again when this drive circuit exports a pulse voltage, this coil excitation produces the magnetic force more than this permanent magnet, the magnetic force making this permanent magnet turns to the magnetic force direction following this coil, by this first type magnetic pole → this iron core → this holding face → this first side → this shell → this second side, return this Second-Type magnetic pole, formed one closing large-scale in push away magnetic circuit, this iron core is forced to be subject to this coil magnetic force and this magnetic force of permanent magnet and push away to the left, the left surface making this iron core is absorbed and fixed in this holding face, make this coil need not be excitatory again, can normality keep in keeping left position；Accordingly, by changing magnetic force direction, use the magnetic circuit change of this permanent magnet and the auxiliary of this spring, even if this iron core normality is held in precalculated position, be not necessary to continuous drain.

2. the magnet arrangement of changing magnetic-path list fixed position according to claim 1, it is characterised in that described iron core, by a magnetically permeable left section of portion and a right section of not magnetically permeable portion, is mutually combined after molding respectively again and is constituted.

3. the magnet arrangement of changing magnetic-path list fixed position according to claim 2, it is characterized in that, the outside in right section of portion of described iron core is provided with a body flange, this spring housing is located at right section of portion of this iron core, and the opening of its inner this tube axial of contact, this body flange of outer end contact, so as to provide this iron core one day active force to the right.

4. the magnet arrangement of changing magnetic-path list fixed position according to claim 1, it is characterized in that, described drive circuit includes: a power supply output line is connected with aforementioned coil, a positive pulse voltage is exported during its power-on, produce a discharge current and export a negative pulse voltage after closing power supply, utilize this flashy positive or negative pulse voltage, excitatory change magnetic force direction is completed for this coil, this iron core is produced thrust or pulling force makes its displacement, and force this permanent magnet conversion magnetic circuit, make this iron core normality be held in precalculated position.

5. the magnet arrangement of changing magnetic-path list fixed position according to claim 1, it is characterised in that the first type magnetic pole of described permanent magnet is N pole, and Second-Type magnetic pole is S pole.

6. the magnet arrangement of changing magnetic-path list fixed position according to claim 5, it is characterised in that the first type magnetic pole of described permanent magnet is provided with a magnetic guiding loop.

7. the magnet arrangement of changing magnetic-path list fixed position according to claim 1, it is characterised in that described holding face system is located at the end face of the cylinder that this inner edge, first side is formed.

8. the magnet arrangement of changing magnetic-path list fixed position according to claim 7, it is characterised in that described cylinder be axially arranged with a through hole.

9. the magnet arrangement of changing magnetic-path list fixed position according to claim 8, it is characterized in that, described second side is also connected with a valve body, this valve body is relative to the right flank of this iron core, it is provided with an air chamber, this air chamber connects with an air inlet and a gas outlet respectively, and the right flank right side of this iron core contact can close this air inlet when pushing away, furthermore, this iron core is provided with an air guide port, the arrival end in this inducing QI aperture connects with this air chamber, with the gas by being back to this air chamber by this gas outlet, after importing this iron core by the arrival end of this air guide port, axially extending bore via this cylinder, it is vented to outside this first side.