CN204315325U - A kind of flexible magnetic surface amasss proportion electro-magnet - Google Patents
A kind of flexible magnetic surface amasss proportion electro-magnet Download PDFInfo
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- CN204315325U CN204315325U CN201420787480.6U CN201420787480U CN204315325U CN 204315325 U CN204315325 U CN 204315325U CN 201420787480 U CN201420787480 U CN 201420787480U CN 204315325 U CN204315325 U CN 204315325U
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- iron core
- dynamic iron
- magnet
- guide pin
- pin bushing
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Abstract
The utility model discloses a kind of flexible magnetic surface and amass proportion electro-magnet, comprise guide pin bushing (2), yoke (3), control coil (4), magnetism-isolating loop (5), valve interface block (7), push rod (8) and dynamic iron core (10), the outer surface of described dynamic iron core (10) is processed with vertically or along the circumferential direction several shapes, measure-alike and equally distributed groove, the end face of groove or side are not through with the operative end surface of dynamic iron core (10) near the operative end surface of iron core (10).The utility model, under the prerequisite not changing the basic structure of existing proportion electro-magnet, profile and interface size, can significantly improve the linearity and the impulse stroke width of proportion electro-magnet displacement-force characteristic.
Description
Technical field
The utility model relates to a kind of proportion electro-magnet, particularly relates to a kind of flexible magnetic surface and amasss proportion electro-magnet.
Background technology
As one of critical component in electrohydraulic proportional controller part, the function of proportion electro-magnet is the current signal converting to force or displacement that Proportional Amplifer are inputted.Therefore, the displacement of electro-hydraulic proportional control technology comparative example electromagnet---force characteristic proposes strict requirement, namely proportion electro-magnet must possess the displacement of level---force characteristic curve, in its effective impulse stroke, when coil current one timing, its power output keeps constant, and has nothing to do with the displacement of dynamic iron core (armature).
The structure of existing proportion electro-magnet as shown in Figure 1, by plastic end cover 1, guide pin bushing 2, yoke 3, control coil 4, magnetism-isolating loop 5, basin shape pole shoe 6, valve interface block 7, push rod 8, magnetism isolating spacer 9, dynamic iron core 10 and end cap interface block 11 form, wherein except plastic end cover 1, magnetism-isolating loop 5, control coil 4, push rod 8, magnetism isolating spacer 9, remaining parts is made by permeability magnetic material.The operation principle of this proportion electro-magnet as shown in Figure 2 (for clarity, the hatching of part is deleted in figure): the magnetic line of force produced by coil 4 is divided into two branch road Φ 1 and Φ 2 through dynamic working gas gap between iron core 10 and valve interface block 7, wherein Φ 1 branch road is axial by the working gas gap bottom basin shape pole shoe through dynamic iron core 10, again through valve interface block 7, yoke 3, guide pin bushing 2, get back to dynamic iron core 10 and form closed hoop; Φ 2 branch road, through the oblique tapered peripheral by basin shape pole shoe of dynamic iron core 10, arrives guide pin bushing front end, then through valve interface block 7, yoke 3, guide pin bushing 2, gets back to dynamic iron core 10 and form closed hoop.Branch road Φ 1 and Φ 2 is respectively F1 and F2 to the axial thrust load that dynamic iron core 10 produces electromagnetic force, and it makes a concerted effort to be the actuating force F that dynamic iron core is subject to, as shown in Figure 3.
As shown in Figure 3, existing proportion electro-magnet mainly relies on the basin shape pole shoe of special shape the magnetic line of force to be divided into two branch roads, by the relative dimensions of basin shape pole shoe adjust two magnetic line of force branch roads produce the relative size of axial magnetic component, thus produce the range of linearity (i.e. the impulse stroke of proportion electro-magnet) of one section of level of approximation on the displacement-force curve of dynamic iron core.Because pole shoe shape is relatively fixing, be difficult to the relative size of accurate adjustment two branch road electromagnetic force during design, cause the poor linearity of existing proportion electro-magnet displacement-force characteristic, the problems such as impulse stroke is relatively short.
Summary of the invention
The purpose of this utility model is to provide a kind of flexible magnetic surface to amass proportion electro-magnet, and this proportion electro-magnet is compared with existing proportion electro-magnet, and the linearity of displacement-force characteristic is better, and impulse stroke is longer.
For achieving the above object, the solution that the utility model adopts is: a kind of flexible magnetic surface amasss proportion electro-magnet, comprise guide pin bushing, yoke, control coil, magnetism-isolating loop, valve interface block, push rod and dynamic iron core, dynamic iron core, valve interface block and control coil are installed in yoke, wherein dynamic iron core and valve interface block distribute vertically, control coil is positioned at the outside of dynamic iron core and valve interface block, guide pin bushing and magnetism-isolating loop are located at dynamic iron core, between valve interface block and control coil, push rod is connected on dynamic iron core also through valve interface block, guide pin bushing comprises leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop is positioned at, between back segment guide pin bushing, the outer surface of described dynamic iron core is processed with several shapes vertically or along the circumferential direction, measure-alike and equally distributed groove, the end face of groove or side are not through with the operative end surface of dynamic iron core near the operative end surface of iron core.
The end face of above-mentioned groove or lateral distance move the operative end surface 0.5 ~ 1mm of iron core.
Termination (depending on the end of the nearly iron core operative end surface) area of section of the above-mentioned groove processed vertically reduces gradually, namely less the closer to its area of section of iron core operative end surface.
Technical solutions of the utility model both can be used for unidirectional proportion electro-magnet, also can be used for two-way proportional solenoid.
The magnetic line of force produced by control coil during utility model works is still divided into two branch road Φ 1 and Φ 2 (see Fig. 4) through dynamic working gas gap between iron core and valve interface block, and suffered by dynamic iron core, the more existing proportion electro-magnet of axial electromagnetic force is slightly little; After dynamic iron core moves right and crosses magnetism-isolating loop to its operative end surface, the magnetic conductive area of the working gas gap between its operative end surface (right side) and basin shape pole shoe is constant, therefore the magnetic resistance of Φ 1 branch road is less by the impact of dynamic iron core periphery upper groove, suffered by dynamic iron core, electromagnetic force F1 is more slow with stroke change, but due to dynamic core exterior surface being processed with equally distributed groove, dynamic air gap magnetic conductive area between iron core cylindrical and basin shape pole shoe periphery significantly reduces, magnetic resistance enlarges markedly, and the axial magnetic component causing Φ 2 branch road to produce significantly reduces.Therefore, the suitably shape and size of design groove, can the more accurately axial magnetic component that produces of control Φ 2 branch road, thus the more accurately relative size of axial magnetic component that produces of control Φ 1 branch road and Φ 2 branch road.
The utility model is under the prerequisite not changing the basic structure of existing proportion electro-magnet, profile and interface size, by processing the groove of suitable shape and size in dynamic core exterior surface, can the more accurately relative size of axial magnetic component that produces of control Φ 1 branch road and Φ 2 branch road, thus the linear performance (linearity of displacement-force characteristic and impulse stroke width) of proportion electro-magnet can be significantly improved.The utility model is not high to the requirement on machining accuracy of bar-shaped trough in addition, and manufacturing cost increases minimum, and can produce without the need to working condition, equipment and the place changing existing proportion electro-magnet.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional proportional electromagnet.
Fig. 2 is the fundamental diagram of the electromagnet of conventional proportional shown in Fig. 1.
Fig. 3 is the displacement of the electromagnet of conventional proportional shown in Fig. 1---force characteristic curve synoptic diagram.
Fig. 4 is the structural representation of the unidirectional proportion electro-magnet of the utility model.
Fig. 5 is the front view of the dynamic iron core in Fig. 4.
Fig. 6 is the left view of the dynamic iron core in Fig. 4.
Fig. 7 is the displacement of the utility model proportion electro-magnet---force characteristic curve synoptic diagram.
Fig. 8 is the front view of the dynamic iron core being processed with all not through axial notch in two ends.
Fig. 9 is the left view of dynamic iron core shown in Fig. 8.
Figure 10 is the front view of the dynamic iron core being processed with the groove be made up of multistage plane.
Figure 11 is the left view of dynamic iron core shown in Figure 10.
Figure 12 is the front view of the dynamic iron core being processed with along the circumferential direction groove.
Figure 13 is the left view of dynamic iron core shown in Figure 12.
Figure 14 is the structural representation of the utility model two-way proportional solenoid.
In Fig. 1-3: 1-plastic end cover, 2-guide pin bushing, 3-yoke, 4-control coil, 5-magnetism-isolating loop, 6-basin shape pole shoe, 7-valve interface block, 8-push rod, 9-magnetism isolating spacer, 10-dynamic iron core 11-end cap interface block
In Fig. 4-12: 1-plastic end cover, 2-guide pin bushing, 3-yoke, 4-control coil, 5-magnetism-isolating loop, 6-basin shape pole shoe, 7-valve interface block, 8-push rod, 9-working gas gap, 10-dynamic iron core 11-end cap interface block 12-groove
In Figure 13: 1-yoke, 2-control coil, 3-dynamic iron core 4-magnetism-isolating loop 5-guide pin bushing 6-push rod 7-valve interface block 8-magnetism-isolating loop 9-groove
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The unidirectional proportion electro-magnet of embodiment 1
As Fig. 4, Fig. 5, shown in Fig. 6, the utility model comprises the guide pin bushing 2 be made up of permeability magnetic material, yoke 3, valve interface block 7, dynamic iron core 10, end cap interface block 11 and the plastic end cover 1 be made up of non-magnet material, control coil 4, magnetism-isolating loop 5 and push rod 8, wherein dynamic iron core 10, valve interface block 7 and control coil 4 are installed in yoke 3, control coil 4 is positioned at the outside of dynamic iron core 10 and valve interface block 7, guide pin bushing 2 and magnetism-isolating loop 5 are located at dynamic iron core 10 and between valve interface block 7 and control coil 4, push rod 8 is connected on dynamic iron core 10 also through valve interface block 7, guide pin bushing 2 comprises leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop 5 is positioned at, between back segment guide pin bushing.The periphery of described dynamic iron core 10 is processed with 6 circumferentially equally distributed rectangle cup head grooves 12, the shape of every bar groove 12, measure-alike, as can be seen from Figure 6, the through left side to dynamic iron core 10 of left end of groove 12, the non-through right side (operative end surface) to dynamic iron core 10 of right-hand member, the dynamic iron core 10 right side about 0.5 ~ 1mm of distalmost end distance of its cup head.Dynamic iron core 10 designs groove 12, and the air gap magnetic conductive area between the periphery of the cylindrical of dynamic iron core 10 and basin shape pole shoe 6 is significantly reduced, and magnetic resistance enlarges markedly, and the axial magnetic component causing Φ 2 branch road to produce significantly reduces.
The utility model, can the more accurately axial magnetic component that produces of control Φ 2 branch road by shape, the size of suitable design groove 12, thus the more accurately relative size of axial magnetic component that produces of control Φ 1 branch road and Φ 2 branch road.Dynamic iron core 10 of the present utility model displacement in whole movement travel-force characteristic curve as shown in Figure 7, with moving of existing proportion electro-magnet---compared with force characteristic curve (as Fig. 3), the displacement of the utility model proportion electro-magnet---force characteristic curve linear degree is better, impulse stroke width obviously increases, and effectively can improve the service behaviour of proportion electro-magnet.
The shape of the utility model to groove 12 is not particularly limited, its direction both can be vertically, also can be along the circumferential direction, just require not through with the operative end surface of iron core 10, therefore groove 12 is except said structure form, also can adopt the version (as shown in Figure 8, Figure 9) that two ends are all not through with the end face of dynamic iron core 10.The groove 12 (termination sectional area reduces gradually) that termination also can be adopted to be connected and composed by multistage plane, as shown in Figure 10,11.Groove 12 also can along the circumferential direction be processed, and as shown in Figure 12 and Figure 13, seven grooves 12 are uniformly distributed vertically, and wherein the right side distance of low order end groove moves iron core 10 right side about 0.5 ~ 1mm.
Embodiment 2 two-way proportional solenoid
As shown in figure 14, the utility model comprise be made up of permeability magnetic material yoke 1, guide pin bushing 5, dynamic iron core 3, valve interface block 7 and the control coil 2 be made up of non-magnet material, magnetism-isolating loop 4,8 and push rod 6, described yoke 1, control coil 2, valve interface block 7 and push rod 6 are two, symmetrical distribution, connected by magnetism-isolating loop 4 between two yokes 3, control coil 2 and valve interface block 7 are installed in the yoke 1 of homonymy, dynamic iron core 3 is between left and right valve interface block 7, and push rod 6 is separately fixed at the two ends of dynamic iron core 3.Guide pin bushing 5 and magnetism-isolating loop 8 are located at dynamic iron core 3 and between valve interface block 7 and control coil 2, guide pin bushing 5 is made up of leading portion guide pin bushing, stage casing guide pin bushing and back segment guide pin bushing, between leading portion guide pin bushing and stage casing guide pin bushing and between stage casing guide pin bushing and back segment guide pin bushing, be provided with magnetism-isolating loop 8.
In the present embodiment, the periphery of dynamic iron core 10 is processed with several rectangle cup head grooves 9 vertically, each groove 9 is circumferentially uniformly distributed, and because the two ends of dynamic iron core 10 are operative end surface, therefore the two ends of groove 9 all can not be through with two end faces of dynamic iron core 10.
The foregoing is only specific embodiment of the utility model, it is pointed out that to those of ordinary skill in the art under the prerequisite not departing from the utility model use principle, some modification and improvement can also be done, also should be considered as utility model protection scope.
Claims (2)
1. a flexible magnetic surface amasss proportion electro-magnet, comprise guide pin bushing (2), yoke (3), control coil (4), magnetism-isolating loop (5), valve interface block (7), push rod (8) and dynamic iron core (10), dynamic iron core (10), valve interface block (7) and control coil (4) are installed in yoke (3), wherein dynamic iron core (10) and valve interface block (7) distribute vertically, control coil (4) is positioned at the outside of dynamic iron core (10) and valve interface block (7), guide pin bushing and magnetism-isolating loop (5) are located at dynamic iron core (10), between valve interface block (7) and control coil (4), push rod (8) is connected to dynamic iron core (10) and goes up and pass valve interface block (7), guide pin bushing comprises leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop (5) is positioned at, between back segment guide pin bushing, it is characterized in that: the outer surface of described dynamic iron core (10) is processed with several shapes vertically or along the circumferential direction, measure-alike and equally distributed groove (12), the end face of groove (12) or side are not through with the operative end surface of dynamic iron core (10) near the operative end surface of iron core (10).
2. the flexible magnetic surface of one according to claim 1 amasss proportion electro-magnet, it is characterized in that: the end face of described groove (12) or lateral distance move the operative end surface 0.5 ~ 1mm of iron core (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787480.6U CN204315325U (en) | 2014-12-14 | 2014-12-14 | A kind of flexible magnetic surface amasss proportion electro-magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787480.6U CN204315325U (en) | 2014-12-14 | 2014-12-14 | A kind of flexible magnetic surface amasss proportion electro-magnet |
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| CN204315325U true CN204315325U (en) | 2015-05-06 |
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|---|---|---|---|
| CN201420787480.6U Withdrawn - After Issue CN204315325U (en) | 2014-12-14 | 2014-12-14 | A kind of flexible magnetic surface amasss proportion electro-magnet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465012A (en) * | 2014-12-14 | 2015-03-25 | 成都大学 | Variable flux area proportional electromagnet |
| CN107180694A (en) * | 2017-04-19 | 2017-09-19 | 常州市康士达机电有限公司 | The electromagnet assembly of solenoid directional control valve |
| CN108831801A (en) * | 2018-06-29 | 2018-11-16 | 贵州振华群英电器有限公司（国营第八九厂） | A kind of double air gaps motor structure for contactor |
-
2014
- 2014-12-14 CN CN201420787480.6U patent/CN204315325U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465012A (en) * | 2014-12-14 | 2015-03-25 | 成都大学 | Variable flux area proportional electromagnet |
| CN104465012B (en) * | 2014-12-14 | 2016-08-17 | 成都大学 | A kind of flexible magnetic surface amasss proportion electro-magnet |
| CN107180694A (en) * | 2017-04-19 | 2017-09-19 | 常州市康士达机电有限公司 | The electromagnet assembly of solenoid directional control valve |
| CN107180694B (en) * | 2017-04-19 | 2019-09-24 | 常州市康士达机电有限公司 | The electromagnet assembly of solenoid directional control valve |
| CN108831801A (en) * | 2018-06-29 | 2018-11-16 | 贵州振华群英电器有限公司（国营第八九厂） | A kind of double air gaps motor structure for contactor |
| CN108831801B (en) * | 2018-06-29 | 2020-04-07 | 贵州振华群英电器有限公司（国营第八九一厂） | Double-air-gap magnetic circuit system structure for contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150506 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |