CN103985602B - A.C. contactor E shaped iron core - Google Patents
A.C. contactor E shaped iron core Download PDFInfo
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- CN103985602B CN103985602B CN201410235951.7A CN201410235951A CN103985602B CN 103985602 B CN103985602 B CN 103985602B CN 201410235951 A CN201410235951 A CN 201410235951A CN 103985602 B CN103985602 B CN 103985602B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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Abstract
The present invention relates to A.C. contactor.The invention discloses a kind of A.C. contactor E shaped iron core.Technical scheme of the present invention is, A.C. contactor E shaped iron core, comprise the static iron core built up by silicon steel sheet, it is characterized in that, the end face of described static iron core three columns is in same plane, article three, in column at least one column end face on be processed with groove, described groove floor lower than described plane, for reducing contact area when dynamic iron core and static iron core adhesive.Further, described silicon steel sheet is provided with engraved structure, to alleviate iron core weight.The present invention, by reducing contact area in column end face machined grooves, reaches the object of adjustment holding force.The present invention reduces iron core weight by processing engraved structure on silicon steel sheet, the impact that engraved structure causes iron core magnetic conductance, can be compensated by the parameter adjusting drive system, also can by adjustment recess width, the contact area changing dynamic iron core and static iron core is supplemented, and can not affect the normal use of iron core.
Description
Technical field
The present invention relates to A.C. contactor, particularly a kind of AC contactor iron core structure and holding force method of adjustment thereof.
Background technology
A.C. contactor is a kind of application low-voltage electrical apparatus widely, based on the operation principle of " energising adhesive; charged maintenance; power-off discharges ", when using ac control power supply manipulation, magnetic hysteresis loss in unshakable in one's determination and short-circuited conducting sleeve and eddy current loss account for more than 90% of total energy consumption, increase the electric energy loss on power network line, shorten the useful life of contactor coil.For a change this high energy consumption operation conditions, China has promulgated GB21518-2008 " A.C. contactor energy efficiency market and efficiency grade ", define the efficiency grade of A.C. contactor, energy efficiency market, Energy efficiency evaluation value and test method in standard, positive facilitation is served to the research of alternating-current contactor energy-saving and electron controls technology.
At present, alternating-current contactor energy-saving technology is along with the extensive use of electron controls technology obtains tremendous development, be direct current adhesive by changing the ac operation mode of A.C. contactor magnet exciting coil, direct current keeps operational mode, and the efficiency grade of A.C. contactor is improved constantly.A.C. contactor is the product of electromechanical integrated structure, and single electronic control mode from changing A.C. contactor, also can not make the operational efficiency of contactor and manufacturing cost reach optimization far away.
In prior art, a kind ofly apply general E shaped iron core silicon steel structure as shown in Figure 1, the static iron core structure of the stacking formation of this silicon steel sheet as shown in Figure 2, can be regarded as and connect by three column one end " E " font iron core that same crossbeam forms.This iron core has symmetrical structure usually, and in figure, OP is its symmetry axis.As seen from Figure 1, iron core middle column's end face and two side column end faces are not in one plane, center pillar end face and two side column face height differences are δ, when contactor adhesive, dynamic iron core only with two side column end contacts of static iron core, move owing to there is a mutually level gap between iron core with static iron core center pillar, and do not contact with dynamic iron core.This gap is called air gap (or magnetic gap), by the height (size of δ) of this air gap of adjustment in engineering, adjusts contactor holding force.Concrete method of adjustment adopts grinding technics, polishes, air gap is adjusted to suitable height, to obtain suitable holding force to two side column end faces and center pillar end face.There is subject matter in this iron core of prior art, one is because needs are polished to two side column end faces and center pillar end face, and machining accuracy is difficult to ensure, the first-time qualification rate of product is lower, and manufacturing cost is high; Two is in use because wearing and tearing change initial air gap value unshakable in one's determination, causes the final utilization lost of life of contactor product; Three is because air-gap reluctance is far longer than the magnetic resistance of silicon steel sheet, and need larger adhesive to keep power, product energy consumption is larger.On the other hand, A.C. contactor weight is also a problem needing to solve, (iron core, magnet exciting coil, actuating mechanism and control system etc. are comprised) in ac contactor apparatus, iron core weight exceedes 40% of device total weight, can the weight of alleviator greatly by reducing iron core weight.Particularly by reducing the weight of dynamic iron core, adhesive power can be reduced further, improving breaking speed, reduce running noises.
Summary of the invention
For the shortcoming of above-mentioned prior art, the object of this invention is to provide a kind of A.C. contactor E shaped iron core, by changing core structure, improving iron core working (machining) efficiency, reducing A.C. contactor energy consumption.
The present invention solve the technical problem, the technical scheme adopted is, A.C. contactor E shaped iron core, comprise the static iron core built up by silicon steel sheet, it is characterized in that, the end face of described static iron core three columns is in same plane, in three columns at least one column end face on be processed with groove, described groove floor lower than described plane, for reducing contact area when dynamic iron core and static iron core adhesive.
The present invention changes the different structure of conventional AC contactor E shaped iron core three stem height, in iron core, three column end faces are in same plane, dynamic iron core all contacts with dynamic iron core with three columns during static iron core adhesive, by reducing contact area in column end face machined grooves, reach the object of adjustment holding force.This structural change conventional AC contactor iron core holding force method of adjustment, iron core processing is more simple and convenient, improves Product processing efficiency.
Preferably, described groove is arranged on center pillar both sides, makes to exceed both sides in the middle part of its end face and forms boss.
Groove is arranged on center pillar both sides by the program, makes to exceed in the middle part of its end face both sides and forms boss, and during iron core adhesive except two side column end faces contact with dynamic iron core, this boss on center pillar also contacts with dynamic iron core.Because boss reduces the magnetic resistance of magnetic circuit, iron core holding force increases greatly, can reduce adhesive and keep electric current to reach energy-conservation object, also can improve contact holddown spring counter-force, thus improve breaking speed, reduce contact abrasion.This scheme is very applicable to middle low power AC contactor iron core structure.
Preferably, described groove is arranged on center pillar end face and/or two side column end face centre positions, makes its end face form two boss.
Groove is arranged on column end face centre position, makes its end face form two boss, is called double polarizing keys structure.Can form double polarizing keys structure at center pillar end face, also can all form this double polarizing keys structure at center pillar end face and two side column end faces, this structure is suitable for middle high-power AC contactor iron core very much.
Preferably, described groove is dovetail groove.
For the iron core of double polarizing keys structure, Pocket Machining is become dovetail groove wide at the top and narrow at the bottom or up-narrow and down-wide dovetail groove, the size of contact-making surface can be changed by polishing three column end faces, thus adjustment holding force, very convenient.
Further, described silicon steel sheet is provided with engraved structure, to alleviate iron core weight.
The program reduces iron core weight by processing engraved structure on silicon steel sheet, and actual weight loss effect can meet or exceed 17%, and particularly for high-power contactor, weight loss effect is very outstanding.By choose reasonable hollow out position, the impact on core structure intensity can be reduced, and the impact that engraved structure causes iron core magnetic conductance, can be compensated by the parameter adjusting drive system, also can by adjustment recess width, the contact area changing dynamic iron core and static iron core is supplemented, and can not affect the normal use of iron core.
Concrete, described engraved structure is rectangular through-hole or manhole.
Engraved structure on silicon steel sheet adopts rectangular through-hole or manhole, can be shaping by Sheet Metal Forming Technology time processing in silicon steel sheet production process, has mould structure structure, feature easy to process.Particularly rectangular through-hole, has the advantage that weight loss effect is outstanding.
Preferably, described engraved structure is arranged on and is positioned on the middle silicon steel sheet of iron core.
Because the magnetic line of force mainly concentrates on iron core periphery surface, the core center position magnetic line of force is relatively less, hollow out process is carried out at the silicon steel sheet being positioned at iron core middle, silicon steel sheet for iron core two ends then keeps original structure not deal with, the impact on magnetic permeability can be reduced to greatest extent, and can the hole that engraved structure is formed be enclosed in the middle of iron core, not with extraneous contact, the chance that these holes are sheltered evil people and countenance evil practices can be reduced, reduce iron core corrosion rate, and add globality and the structural strength of iron core.
Preferably, on adjacent silicon steel disc, engraved structure position does not overlap mutually.
On adjacent silicon steel disc, engraved structure position does not overlap mutually, and the hole namely on adjacent silicon steel disc is staggered.The iron core of this structure can make the impact of engraved structure on core structure intensity greatly reduce, and decreases the impact on iron core magnetic conductance.
Recommend, the silicon steel sheet being provided with engraved structure has same structure, and on silicon steel sheet, same position place engraved structure shape is identical with size, and adjacent silicon steel disc turn-over stacks.
In this technical scheme, the engraved structure that silicon steel sheet is arranged is identical, and on silicon steel sheet, same position place engraved structure shape is identical with size.Same secondary Mould Machining silicon steel sheet can be adopted respectively for static iron core and dynamic iron core, thus cut down finished cost.During lamination, adjacent silicon steel disc turn-over is stacked and just can realize the design feature that on adjacent silicon steel disc, engraved structure position does not overlap mutually.
Recommend, the engraved structure position that silicon steel sheet alternate in described iron core is arranged is identical.
The program adopts the silicon steel sheet that two groups of structures are different, and when stacking, two groups of silicon steel sheets are stacked alternately, and also can realize the design feature that on adjacent silicon steel disc, engraved structure position does not overlap mutually.
The invention has the beneficial effects as follows, static iron core structure of the present invention can improve holding force 30% ~ 50% unshakable in one's determination, newly-increased holding force can reduce the object that holding current reaches energy-conservation on the one hand, appropriateness can improve contact holddown spring counter-force on the other hand, the speed improving probe of contactor disjunction reduces the loss of contact.The raising of holding force unshakable in one's determination, also for hollow out process creates condition, can compensate the impact of magnetic permeability reduction on holding force that hollow out process causes.
Accompanying drawing explanation
Fig. 1 is prior art iron core static iron core silicon steel structure schematic diagram;
Fig. 2 is prior art iron core static iron core structural representation;
Fig. 3 is embodiment 1 static iron core silicon steel structure schematic diagram;
Fig. 4 is embodiment 1 static iron core structural representation;
Fig. 5 is embodiment 2 static iron core silicon steel structure schematic diagram;
Fig. 6 is embodiment 2 static iron core structural representation;
Fig. 7 is embodiment 3 groove structure schematic diagram
Fig. 8 is embodiment 4 groove structure schematic diagram;
Fig. 9 is that embodiment 5 moves iron core silicon-steel sheet structural representation;
Figure 10 is that embodiment 5 moves core structure schematic diagram;
Figure 11 is embodiment 5 static iron core silicon steel structure schematic diagram;
Figure 12 a is the dynamic iron core silicon-steel sheet structural representation of embodiment 6;
Figure 12 b is the rearview of Figure 12 a;
Figure 13 a is the static iron core silicon steel structure schematic diagram of embodiment 6;
Figure 13 b is the rearview of Figure 13 a.
In figure, 1 is rectangular through-hole (engraved structure); 2 is pilot hole; OP is symmetry axis; δ is air gap height (difference in height of center pillar and side column); 11 is rivet; 12 is groove; 13 is boss.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The present invention changes the different structure of conventional AC contactor E shaped iron core three stem height, and in iron core, three stem height are identical, and its end face is in same plane.Dynamic iron core all contacts with dynamic iron core with three columns during static iron core adhesive, and due to the increase of contact area, iron core holding force increases greatly, can reduce contact area in column end face machined grooves, reaches the object of adjustment holding force.Also hollow out process can be coordinated to carry out loss of weight, and the holding force of increase can compensate the negative effect of engraved structure to holding force.
A.C. contactor E shaped iron core structure of the present invention, change traditional iron core holding force method of adjustment by polishing column adjustment air gap height, in iron core column end face machined grooves, form boss structure, change contact area when moving iron core and static iron core adhesive by adjustment recess width, thus reach the object of the dynamic iron core of adjustment and static iron core holding force.Reduce the area that recess width is equivalent to add the dynamic iron core of boss contact, thus increase dynamic iron core and static iron core holding force, otherwise, increase the area that recess width is just equivalent to decrease the dynamic iron core of boss contact, thus reduce dynamic iron core and static iron core holding force.Hold precision because width engineering controlling groove is easier than control three column face height, machining accuracy is higher with the inventive method in institute, and conforming product rate is also higher.
Embodiment 1
This routine A.C. contactor E shaped iron core, comprise the dynamic iron core and static iron core that are built up by silicon steel sheet, Fig. 3 shows the structure of static iron core silicon steel sheet, and Fig. 4 is the static iron core structural representation of the stacking formation of silicon steel sheet.The end face of static iron core three columns is in same plane, the end face of center pillar is processed with groove 12, and groove 12 is arranged on center pillar both sides, makes to exceed both sides in the middle part of center pillar end face and forms boss 13.Groove 12 bottom surface is lower than three column end faces, when making iron core and static iron core adhesive, center pillar only has boss 13 to contact with dynamic iron core, other parts of center pillar end face do not contact with dynamic iron core, thus reduce the contact area of dynamic iron core and static iron core, reach the object of adjustment holding force.
Embodiment 2
This routine A.C. contactor E shaped iron core is a high-power AC contactor iron core, and as shown in Figure 5 and Figure 6, Fig. 5 is silicon steel structure schematic diagram to structure, and Fig. 6 is core structure schematic diagram.The section of this routine static iron core silicon steel sheet three columns is all provided with groove 12, and groove 12 is arranged on center pillar end face and two side column end face centre positions, and the both sides of three column end faces all form boss 13, form so-called double polarizing keys structure.Usually, AC contactor iron core center pillar width is all greater than two side column width, and the recess width that corresponding center pillar end face is arranged also is the widest in three columns.When A.C. contactor adhesive, the boss 13 of iron core end face all contacts with dynamic iron core, by changing the width of groove 12, just can change the width of boss 13, thus changes contact area, reaches the object of adjustment holding force.
Embodiment 3
As shown in Figure 7, the shape of this routine groove 12 is different from above-described embodiment, and groove 12 adopts oat tail groove structure wide at the top and narrow at the bottom, and these other structures of routine iron core are identical with embodiment 2.This routine static iron core can adjust contact area, the groove shapes shown in Fig. 7 by polishing column end face, and polishing column can increase contact area, namely increases holding force.
Embodiment 4
The groove of this routine static iron core three column end faces adopts up-narrow and down-wide oat tail groove structure, as shown in Figure 8.This routine static iron core moves the contact area of iron core and static iron core when can reduce adhesive by polishing column end face, other structures of this example are identical with embodiment 2.
Embodiment 5
This routine iron core is also E shaped iron core, and its dynamic iron core and static iron core are by the stacking formation of silicon steel sheet, and as shown in Figure 9, Figure 10 shows the dynamic iron core that silicon steel sheet builds up to dynamic electrical steel chip architecture, and as shown in figure 11, OP is silicon steel sheet symmetry axis to static iron core silicon steel structure.In figure, manhole 2 is the pilot hole of iron core, comprises the rivet hole of rivet clasp iron core and the supported hole of mounting bracket.Rectangular through-hole 1 in figure is exactly the engraved structure in order to loss of weight processing.Significantly, engraved structure 1 also can be processed into manhole, although manhole weight loss effect is not as rectangular through-hole, manhole processing is more convenient, and mould structure is also simpler.
As seen from Figure 10, engraved structure 1 is all that processing is being positioned on the silicon steel sheet in the middle of iron core, the silicon steel sheet being positioned at iron core two ends does not process engraved structure, but maintains silicon steel sheet original structure.In the dynamic iron core of this example, each silicon steel sheet being provided with engraved structure all has same structure, and on each silicon steel sheet, same position place engraved structure shape is all identical with size, and static iron core is also like this.When the silicon steel sheet of this structure assembles, in whole iron core, hollow out position overlaps, and except the silicon steel sheet at iron core two ends is not processed except engraved structure, hollow out also can regard the hollow out to whole iron core as.The iron core weight loss effect of this structure is given prominence to, but affects larger on core structure intensity and magnetic permeability.This routine static iron core three column end faces are all processed with groove 12, and comparison diagram 5 and Figure 11 can find out, groove 12 structure of static iron core column end face is identical with embodiment 2.This routine engraved structure, on the impact of iron core holding force, can be compensated by the width changing groove 12 and adjusted.
Embodiment 6
The dynamic electrical steel chip architecture of this example is as shown in Figure 12 a, Figure 12 b, and static iron core silicon steel structure is as shown in Figure 13 a, Figure 13 b.If certain one side of silicon steel sheet is defined as front (A face), then its reverse side is the back side (B face), Figure 12 a is considered as dynamic iron core silicon-steel sheet A face front view, Figure 12 b is exactly dynamic iron core silicon-steel sheet B face front view, Figure 13 a is static iron core silicon steel sheet A face front view, and Figure 13 b is static iron core silicon steel sheet B face front view.Figure 12 a and Figure 12 b also can regard the different dynamic iron core silicon-steel sheet of two kinds of structures as, and accordingly, Figure 13 a and Figure 13 b also can regard the different static iron core silicon steel sheet of two kinds of structures as.In this routine iron core, on adjacent silicon steel disc, engraved structure position does not overlap mutually.
According to the symmetry (being also the symmetry of silicon steel sheet) of iron core, this routine iron core can adopt two kinds of processing methods to manufacture.Its processing method can be described by Figure 12 a, Figure 12 b and Figure 13 a, Figure 13 b, for dynamic iron core, see Figure 12 a and Figure 12 b.
The first processing method is, need the silicon steel sheet carrying out hollow out process, all press the shape processing engraved structure 1 shown in Figure 12 a, each silicon steel sheet all has same structure, on silicon steel sheet, same position place engraved structure shape is identical with size, during lamination, adjacent silicon steel sheet turn-over stacks, and the engraved structure position on adjacent silicon steel disc is not overlapped mutually.As can be seen from Figure 12 a and Figure 12 b, by the silicon steel sheet of the shape processing shown in Figure 12 a, after turn-over, just as shown in Figure 12b, the engraved structure position just interlaced arrangement in two width figure, does not overlap its shape mutually.The advantage of this processing method is, only needs can complete processing once secondary mould, stacks by turn-over during lamination the architectural feature that the engraved structure position that just can obtain on adjacent silicon steel disc do not overlap mutually.This processing method, has requirement to engraved structure position, needs engraved structure location arrangements on silicon steel sheet symmetry axis both sides.
The second processing method, regard the silicon steel sheet shown in Figure 12 a with Figure 12 b as two kinds of structures different silicon steel sheet, 2 groups are divided into by needing the silicon steel sheet of hollow out, first group of silicon steel sheet is according to shape processing engraved structure described in Figure 12 a, second group of silicon steel sheet is according to the processing of shape shown in Figure 12 b engraved structure, the engraved structure position that two groups of silicon steel sheets are processed is different, interlaced arrangement.During lamination first group of silicon steel sheet and second group of silicon steel sheet alternately stacking, on alternate silicon steel sheet, engraved structure position is identical, and the engraved structure position on adjacent silicon steel disc does not overlap mutually.The feature of this processing method is that the secondary mould of needs two is processed, and does not need to carry out turn-over operation during lamination.Engraved structure can be arranged on silicon steel sheet symmetry axis by this processing method, realizes the scheme of the upper and lower interlaced arrangement of engraved structure on adjacent silicon steel disc symmetry axis.
As can be seen from Figure 13 a and Figure 13 b, this routine static iron core column end face is all processed with groove 12.The iron core that above-mentioned two kinds of processing methods obtain, alternate silicon steel structure is identical, and adjacent silicon steel structure is different, the through hole not having engraved structure to be formed in the iron core obtained, smaller on the impact of core structure intensity, also can reduce the impact of iron core magnetic conductance, just weight loss effect is slightly poor.
180A specification A.C. contactor holding current is compared as follows:
| Core construction | Magnet exciting coil specification (V) | Holding current (mA) |
| Prior art is unshakable in one's determination | 220 | 205 |
| Iron core of the present invention | 220 | 95 |
Claims (10)
1. A.C. contactor E shaped iron core, comprise the dynamic iron core and static iron core that are built up by silicon steel sheet, it is characterized in that, the end face of described static iron core three columns is in same plane, article three, in column at least one column end face on be processed with groove, described groove floor lower than described plane, for reducing contact area when dynamic iron core and static iron core adhesive.
2. A.C. contactor E shaped iron core according to claim 1, it is characterized in that, described groove is arranged on center pillar both sides, makes to exceed both sides in the middle part of its end face and forms boss.
3. A.C. contactor E shaped iron core according to claim 1, is characterized in that, described groove is arranged on center pillar end face and two side column end face centre positions, makes its end face form two boss.
4. A.C. contactor E shaped iron core according to claim 3, is characterized in that, described groove is dovetail groove.
5. the A.C. contactor E shaped iron core according to Claims 1 to 4 any one, is characterized in that, described silicon steel sheet is provided with engraved structure, to alleviate iron core weight.
6. A.C. contactor E shaped iron core according to claim 5, is characterized in that, described engraved structure is rectangular through-hole or manhole.
7. according to power A.C. contactor E shaped iron core according to claim 5, it is characterized in that, described engraved structure is arranged on and is positioned on the middle silicon steel sheet of iron core.
8., according to power A.C. contactor E shaped iron core according to claim 5, it is characterized in that, in described iron core, on adjacent silicon steel disc, engraved structure position does not overlap mutually.
9., according to power A.C. contactor E shaped iron core according to claim 8, it is characterized in that, the silicon steel sheet being provided with engraved structure has same structure, and on silicon steel sheet, same position place engraved structure shape is identical with size, and adjacent silicon steel disc turn-over stacks.
10., according to power A.C. contactor E shaped iron core according to claim 8, it is characterized in that, the engraved structure position that silicon steel sheet alternate in described iron core is arranged is identical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235951.7A CN103985602B (en) | 2014-05-30 | 2014-05-30 | A.C. contactor E shaped iron core |
| PCT/CN2015/079873 WO2015180633A1 (en) | 2014-05-30 | 2015-05-27 | E-type iron core for alternating-current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235951.7A CN103985602B (en) | 2014-05-30 | 2014-05-30 | A.C. contactor E shaped iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103985602A CN103985602A (en) | 2014-08-13 |
| CN103985602B true CN103985602B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410235951.7A Expired - Fee Related CN103985602B (en) | 2014-05-30 | 2014-05-30 | A.C. contactor E shaped iron core |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103985602B (en) |
| WO (1) | WO2015180633A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985602B (en) * | 2014-05-30 | 2015-10-28 | 成都海沃斯电气技术有限公司 | A.C. contactor E shaped iron core |
| CN105914010B (en) * | 2016-04-18 | 2017-09-22 | 长兴盛强电子器材有限公司 | E type choke coils |
| CN110131467A (en) * | 2019-06-06 | 2019-08-16 | 福建洁博利厨卫科技有限公司 | A kind of bistable electromagnetic valve and induction discharging device |
| KR102633487B1 (en) * | 2021-03-19 | 2024-02-06 | 미쓰비시덴키 가부시키가이샤 | electromagnetic contactor |
| CN114038665B (en) * | 2021-12-21 | 2023-03-10 | 江苏天瑞变压器有限公司 | Transformer core and wire winding rack thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1582986A (en) * | 1924-04-09 | 1926-05-04 | Reyrolle A & Co Ltd | Alternating-current electromagnet |
| GB1031794A (en) * | 1962-01-29 | 1966-06-02 | Cie Electro Mechanique | Improvements in and relating to magnetic circuits for relays, contactors or like electromagnetic apparatus |
| CH458538A (en) * | 1967-09-05 | 1968-06-30 | Landis & Gyr Ag | Folding armature relay |
| US4577174A (en) * | 1984-03-31 | 1986-03-18 | Square D Starkstrom Gmbh | Electromagnet for electric switching device |
| CN101630568A (en) * | 2008-06-18 | 2010-01-20 | 富士电机机器制御株式会社 | Electromagnet device and electromagnetic contactor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US457717A (en) * | 1891-08-11 | hicks | ||
| JP4143896B2 (en) * | 2002-04-23 | 2008-09-03 | 富士電機機器制御株式会社 | electromagnet |
| CN103985602B (en) * | 2014-05-30 | 2015-10-28 | 成都海沃斯电气技术有限公司 | A.C. contactor E shaped iron core |
-
2014
- 2014-05-30 CN CN201410235951.7A patent/CN103985602B/en not_active Expired - Fee Related
-
2015
- 2015-05-27 WO PCT/CN2015/079873 patent/WO2015180633A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1582986A (en) * | 1924-04-09 | 1926-05-04 | Reyrolle A & Co Ltd | Alternating-current electromagnet |
| GB1031794A (en) * | 1962-01-29 | 1966-06-02 | Cie Electro Mechanique | Improvements in and relating to magnetic circuits for relays, contactors or like electromagnetic apparatus |
| CH458538A (en) * | 1967-09-05 | 1968-06-30 | Landis & Gyr Ag | Folding armature relay |
| US4577174A (en) * | 1984-03-31 | 1986-03-18 | Square D Starkstrom Gmbh | Electromagnet for electric switching device |
| CN101630568A (en) * | 2008-06-18 | 2010-01-20 | 富士电机机器制御株式会社 | Electromagnet device and electromagnetic contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103985602A (en) | 2014-08-13 |
| WO2015180633A1 (en) | 2015-12-03 |
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