CN201868177U - Electromagnet structure with adjustable air gap - Google Patents
Electromagnet structure with adjustable air gap Download PDFInfo
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- CN201868177U CN201868177U CN2010206143400U CN201020614340U CN201868177U CN 201868177 U CN201868177 U CN 201868177U CN 2010206143400 U CN2010206143400 U CN 2010206143400U CN 201020614340 U CN201020614340 U CN 201020614340U CN 201868177 U CN201868177 U CN 201868177U
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Abstract
The utility model relates to an electromagnet structure with an adjustable air gap, belonging to the technical field of low-voltage electrical appliances. The electromagnet structure with the adjustable air gap comprises a yoke iron assembly, a fixed iron core, a movable iron core and a reaction spring, wherein the fixed iron core is fixed at the opening of the yoke iron assembly; the movable iron core is also arranged at the opening of the yoke iron assembly, corresponds to the fixed iron core and can move in a direction which faces right to the fixed iron core; one end of the reaction spring is supported on the yoke iron assembly and the other end of the reaction spring is supported on the movable iron core; and the movable iron core, the fixed iron core and the yoke iron assembly form a main magnetic path Phi 1. The electromagnet structure with the adjustable air gap is characterized in that the electromagnet structure additionally comprises a movable sliding block, a fixed sliding block and a sliding block adjusting device, the movable sliding block is slideably arranged on the yoke iron assembly, the fixed sliding block is fixed on the yoke iron assembly and corresponds to the movable sliding block, the sliding block adjusting device is arranged on the yoke iron assembly and is connected with a movable sliding block pivot, and the movable sliding block, the fixed sliding block and the yoke iron assembly form an auxiliary magnetic path Phi 2. The electromagnet structure with the adjustable air gap has the characteristics of wide adjustable range and high adjustable amplitude.
Description
Technical field
The utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of electromagnet structure of adjusting air gap.
Background technology
Electromagnet is widely used in the low voltage electrical apparatus technology field, low-voltage electrical apparatus is played effects such as short-circuit protection and overload protection.Electromagnet is made up of armature, yoke and reaction spring etc. usually, and its operation principle is to make magnetic system magnetization by means of loop current is excitatory, produces electromagnetic attraction and attracts armature, makes it motion and does mechanical power, thereby reach some predetermined purpose.
The drop-away current setting value of electromagnet can be regulated within the specific limits, and because the drop-away current setting value of electromagnet can be got the different multiples of rated current, therefore user's choose reasonable drop-away current value according to actual needs, so the diversity that more can satisfy user's demand because of adjustable magnetictrip is thought the developing direction of magnetic release by the public undoubtedly.
In the prior art electromagnetism of electromagnet being regulated is promptly to regulate the gap between armature and the yoke or change reaction spring power by the working gas gap of regulating magnetictrip to realize, and advocating of adjusting reaction spring will be by adjusting the pretightning force acquisition of spring, but, the adjustment of the active force of reaction spring is existed the problem of poor accuracy.
Regulating by the working gas gap of magnetictrip is more common means, but, therefore can expose by shortcoming shown in Figure 5 (Fig. 5 is the electromagnet characteristic curve schematic diagram in the prior art) the working gas gap adjusting because the structure of the electromagnet in the prior art is lost rationally.Among Fig. 5, the counter-force of reaction spring is represented that by F1 each setting current represents that with A1, A2 and A3 wherein: A1＜A2＜A3 working gas gap is represented with δ 1.Exported effective mechanical energy in order to guarantee armature, must reserve certain stroke δ 11 to armature and carry out energy storage, and working gas gap greater than certain value after, electromagnetic attraction reduces greatly to the susceptibility of air gap, the relation curve of electromagnetic attraction and air gap tends towards stability, δ 12～δ 13 scopes among performance Fig. 5, in limited space, because the relation curve of electromagnetic attraction and air gap is too mild, improper as adjustable range, promptly, adjustable range can only be confined to δ 11～δ 12, this shows, very little to the adjustable range of drop-away current value, be difficult to satisfy user's selectivity adjusting requirement.
In view of above-mentioned prior art, be necessary to be improved, for this reason, the applicant has carried out good try, and technical scheme described below produces under this background.
Summary of the invention
Task of the present utility model is to provide a kind of and had not only helped to ensure the air gap degree of regulation but also helped obtaining desirable adjustable range and the electromagnet structure of the air gap adjusted rational in infrastructure.
Task of the present utility model is finished like this, and a kind of electromagnet structure of adjusting air gap comprises a yoke assembly; One static iron core is fixed in the opening part of yoke assembly; One moving iron core, this moving iron core is arranged at the opening part of yoke assembly equally, and is corresponding with static iron core and move on the direction of static iron core; One reaction spring, one end bearing of this reaction spring is on the yoke assembly, and the other end is bearing on the moving iron core, wherein: described moving iron core and static iron core and yoke assembly constitute main magnetic circuit φ 1, characteristics are: also include a movable slider, quiet slide block and slide adjustment, movable slider is slidingly arranged on the described yoke assembly, quiet slide block is fixed on the yoke assembly, and it is corresponding with movable slider, slide adjustment is located on the yoke assembly and is pivotally connected with described movable slider, and wherein: described movable slider and quiet slide block and yoke assembly constitute auxiliary magnetic loop Φ 2.
In a specific embodiment of the present utility model; described yoke assembly comprises yoke; the static iron core seat; moving iron core base and a pair of location-plate; the middle part of a pair of location-plate respectively has the conductor chamber, primary circuit that a conductor dbus that is used for the confession protective circuit is crossed; described yoke is positioned between a pair of location-plate; yoke has a yoke chamber; this yoke chamber is corresponding with conductor chamber, described primary circuit; static iron core seat and moving iron core base are between a pair of location-plate; wherein: the static iron core seat is fixed on an end on the top of a pair of location-plate; and moving iron core base is fixed on the other end on the top of a pair of location-plate; and it is corresponding with the static iron core seat; described static iron core is arranged on the described static iron core seat; described moving iron core is arranged on the described moving iron core base; and it is corresponding with static iron core; constitute working gas gap δ 1 between moving iron core and the static iron core; and by described yoke; moving iron core and working gas gap δ 1 constitute the main magnetic circuit Φ 1 around described conductor; described moving; is furnished with an induction coil with center through hole between the static iron core; this induction coil is corresponding to described yoke chamber; described reaction spring is positioned at center through hole; and it is described moving; static iron core all probes in the center through hole; described quiet slide block is fixed on an end on the top of a pair of location-plate; and described movable slider cunning fits over the other end on the top of location-plate; moving; constitute auxiliary magnetic circuit air gap delta 2 between the quiet slide block; electromagnetic attraction on the described main magnetic circuit Φ 1 changes with the change of described auxiliary magnetic circuit air gap delta 2, and described slide adjustment is located on the location-plate.
In another specific embodiment of the present utility model, one end on the top of described a pair of location-plate respectively offers the static iron core positioning chamber that a position corresponds to each other, and the other end on the top of a pair of location-plate respectively offers the same corresponding mutually moving iron core positioning chamber in a position, described static iron core seat is set bead constituting static iron core on the wall body of described static iron core positioning chamber, static iron core is set bead and static iron core positioning chamber scarf, described moving iron core base is set bead constituting moving iron core on the wall body of described moving iron core positioning chamber, moving iron core is set bead and moving iron core positioning chamber scarf, on described static iron core seat, offer the static iron core hole, one end of described static iron core is fixed in the static iron core hole, and the other end is insinuated in the end of center through hole of described induction coil, on described moving iron core base, offer position and described static iron core hole corresponding moving iron core hole, one end of described moving iron core is placed in the moving iron core hole, and the other end then is insinuated in the other end of center through hole of induction coil.
In another specific embodiment of the present utility model, the inwall in described static iron core hole is provided with internal thread, and an end of described static iron core is provided with external screw thread, and external screw thread matches with described internal thread.
In another specific embodiment of the present utility model, and described moving iron core constitutes a supporting step towards an end of static iron core, and an end bearing of described reaction spring is on the yoke assembly, and the other end then is bearing on the supporting step.
Also have in the specific embodiment of the present utility model, described yoke respectively is extended with the yoke tenon towards the side of described a pair of location-plate, and offer mortise on a pair of location-plate and at position corresponding to the yoke tenon, go into mortise and yoke is positioned between a pair of location-plate by yoke tenon tenon.
More of the present utility model and in specific embodiment, respectively offer at least one pair of connecting rod hole that the position corresponds to each other on the described a pair of location-plate, inserted connecting rod in each connecting rod hole, on described yoke, offer that quantity equates with the quantity of connecting rod and the corresponding connecting rod resigning hole in position and connecting rod hole, have a joint pin on the outer wall of described movable slider, described slide adjustment is provided on the connecting rod.
In of the present utility model and then specific embodiment, an end on the top of described a pair of location-plate respectively constitutes a pair of projection, described quiet slide block and projection build-in, and the shape of cross section of described dynamic and static slide block all is n shape.
Of the present utility model again more and in specific embodiment, described yoke be shaped as U-shaped or semicircle.
In again of the present utility model and then specific embodiment, offer first, second sliding tray and the 3rd sliding tray on the described slide adjustment and constitute a tooth section, wherein: first sliding tray is nested with on described joint pin, and second, third sliding tray is nested with on described connecting rod, and the tooth section is formed in the edge of slide adjustment.
The technical scheme that the utility model provides is owing to be made of on the matrix of main magnetic circuit φ 1 yoke assembly, moving iron core and static iron core, by setting up dynamic and static slide block, constitute auxiliary magnetic circuit φ 2 by dynamic and static slide block and yoke assembly, thereby adopt the first magnetic loop school is transferred, realization is regulated auxiliary magnetic circuit φ 2, increase the setting current adjustable range, applicable to a plurality of current classes, it is big but also have high characteristics of the amplitude of accommodation not only to have adjustable range.
Description of drawings
Fig. 1 is example structure figure of the present utility model.
Fig. 2 is the cutaway view after Fig. 1 assembling.
Fig. 3 is the magnetic circuit schematic diagram of the utility model Fig. 1 structure.
Fig. 4 is an electromagnet characteristic curve schematic diagram of the present utility model.
Fig. 5 is the electromagnet characteristic curve schematic diagram in the prior art.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but to the description of embodiment all is not restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.
Ask for an interview Fig. 1; Fig. 2 and Fig. 3; provided a pair of location-plate 14 that constitutes yoke assembly 1; this is identical and link together face-to-face with size to location-plate 14 shape each other; middle section at each location-plate 14 constitutes the conductor chamber, primary circuit 141 that a conductor 9 (Fig. 2 shows) that is used for the confession protective circuit passes through; and the end on the top of each location-plate 14 offers a static iron core positioning chamber 142; the other end offers a moving iron core positioning chamber 143, and at the top of each location-plate 14 promptly the edge corresponding to the top of an end that offers static iron core positioning chamber 142 be extended with a pair of projection 146.A yoke 11 that constitutes yoke assembly 1 is placed between a pair of location-plate 14, hence one can see that, spacing between a pair of location-plate 14 is the thickness of yoke 11 just, the shape of yoke 11 trends towards semicircle, its yoke chamber 111 is corresponding with conductor chamber 141, aforesaid primary circuit, also be extended with yoke tenon 113 (also can claim pin) in the side of yoke 11, yoke tenon 113 matches with mortise 144 on being opened in location-plate 14, promptly, with location-plate 14 and yoke 11 rivet clasps, and location-plate 14 uses non-magnet material to make.In addition, on yoke 11, also offer connecting rod resigning hole 112.End as the top of static iron core seat 12 between a pair of location-plate 14 of yoke assembly 1, one moving iron core base 13 is the other end on the top between a pair of location-plate 14 then, specifically: constitute static iron core at static iron core seat 12 towards the side of location-plate 14 and set bead 121, static iron core is set bead 121 and is embedded in the aforesaid static iron core sheet positioning chamber 142, thereby static iron core seat 12 reliably is positioned between a pair of location-plate 14; Constitute moving iron core equally towards the side of location-plate 14 at moving iron core base 13 and set bead 131, moving iron core is set bead 131 and is embedded in the aforesaid moving iron core positioning chamber 143, is positioned reliably between a pair of location-plate 14 thereby will move iron core base 13.Dynamic and static iron core base 13,12 corresponds to each other, and promptly both are on the same axis or claim and are on the same horizontal plane.Preferred scheme can process internal thread 1221 on the hole wall in the static iron core hole of being offered on the static iron core seat 12 122, and inserts a copper sheathing 1321 in the moving iron core hole of being offered on moving iron core base 13 132.
One end of one static iron core 5 is that illustrated left end is placed in the aforesaid static iron core hole 122, and on the outer wall of this end of static iron core 5, be processed with external screw thread 51, external screw thread 51 matches with aforesaid internal thread 1221, the other end of static iron core 5 is that illustrated right-hand member is stretched over outside the static iron core hole 122, be insinuated into the center through hole 81 interior (left end) of induction coil 8, because yoke 11, moving iron core 6 and static iron core 5 constitute first magnetic loop of the utility model structure, therefore pass through adjusting to the external screw thread 51 of static iron core 5, can change working gas gap δ 1, make, static iron core 6, distance between 5 changes, thereby transfer in the school of realizing electromagnet.One end of one moving iron core 6 is that illustrated right-hand member is placed in the moving iron core hole 132, the other end of moving iron core 6 is that illustrated left end is stretched over outside the moving iron core hole 132, be insinuated into the center through hole 81 interior (right-hand member) of induction coil 8, also constitute a supporting step 61 at the right-hand member that moves iron core 6.Induction coil 8 is between dynamic and static iron core 6,5 and corresponding to the accent position in aforesaid yoke chamber 111.One reaction spring 7 is positioned at the center through hole 81 of induction coil 8, and an end (left end) of this reaction spring 7 supporting is positioned on the yoke assembly 1, and the other end (right-hand member) is positioned on the supporting step 61.
The main points of the technical scheme that provides as the utility model, build-in has a quiet slide block 3 on aforesaid projection 146, and is equipped with a movable slider 2 on the top of a pair of location-plate 14 and at the end corresponding to quiet slide block 3.Hence one can see that: the air gap between moving iron core 6 and the static iron core 5 constitutes working gas gap δ 1 (Fig. 3 shows), and the main magnetic circuit φ 1 that is constituted around aforesaid conductor 9 by yoke 11, moving iron core 6 and working gas gap δ 1 is first magnetic circuit (Fig. 3 shows).And the air gap between movable slider 2 and the quiet slide block 3 constitutes auxiliary magnetic circuit air gap delta 2, and constitutes i.e. second magnetic circuit of auxiliary magnetic circuit φ 2 by yoke 11, movable slider 2, quiet slide block 3 and auxiliary magnetic circuit air gap delta 2.So the electromagnetic attraction on the main magnetic circuit φ 1 can change with the change of auxiliary magnetic circuit air gap delta 2.Movable slider 2 can by manual mode also can by mechanical system with the adhesive direction of quiet slide block 3 on regulate, to embody the electromagnetic attraction of regulating on the main magnetic circuit φ 1 by to adjusting auxiliary magnetic circuit air gap delta 2, thereby the dropout setting current scope of regulating magnet effectively is for the adjustability of magnetic system provides effective means.
The applicant mentions in the above, quiet slide block 3 is fixed, promptly can not move towards the direction of movable slider 2, and movable slider 2 both can also can have been regulated by mechanical system by manual, therefore in order to make movable slider 2 be able to regulate by mechanical system, so on the sidewall of movable slider 2, be installed with a joint pin 21, and on aforesaid a pair of location-plate 14, offer a pair of connecting rod hole 145 (the aforesaid connecting rod resigning hole 112 that is opened on the yoke 11 also is to offer for this purpose), in connecting rod hole 145, be inserted with connecting rod 1451, on connecting rod 145, hang and connecting a slide adjustment 4 that is essentially adjustment disk, regulating by 4 pairs of aforesaid movable sliders 2 of this slide adjustment.Specifically: on slide adjustment 4, offer first, second, the 3rd sliding tray 41,42,43 and be provided with the tooth section 44 of an arc, first sliding tray 41 cooperates with joint pin 21, be that joint pin 21 extend in first sliding tray 41, and second, the 3rd sliding tray 42,43 match with the end of a pair of connecting rod 1451, the end that is a pair of connecting rod 1451 stretches into second respectively, the 3rd sliding tray 42, in 43, tooth section 44 is formed in the edge of slide adjustment 4, gear driven tooth section 44 by the outside, make slide adjustment 4 motions, to realize making movable slider 2 move or move towards the direction that deviates from quiet slide block 3 towards the direction of quiet slide block 3, more particularly, movable slider 2 is moved along the axis direction of moving iron core 6.As described above, drive movable slider 2 motions by slide adjustment 4, regulate auxiliary magnetic circuit air gap delta 2, distance between movable slider 2, quiet slide block 3 working faces is changed, promptly by regulating the electromagnetic attraction that auxiliary magnetic circuit air gap delta 2 is regulated on the main magnetic circuit φ 1, thus the dropout setting current scope of regulating magnet effectively.
Please specifically see Fig. 3 and Fig. 4, the utility model is to adopt the mode of parallel circuits to increase the adjustable range of magnetic circuit, when auxiliary magnetic circuit air gap delta 2 maximums, moving iron core 6 among the main magnetic circuit φ 1 and the electromagnetic attraction maximum between the static iron core 5, so, along with reducing of auxiliary magnetic circuit air gap delta 2, the moving iron core 6 on the main magnetic circuit φ 1, the electromagnetic attraction between the static iron core 5 reduce gradually.As shown in Figure 4, the spring counter-force of definition reaction spring 7 is F1, and the definition operating current of respectively adjusting is A1, A2, A3 and A4, A1＜A2＜A3＜A4 wherein, and δ 21, δ 22, δ 23, δ 24 are the auxiliary magnetic circuit air gap under each operating current.By regulating the electromagnetic attraction that auxiliary magnetic circuit air gap delta 2 is regulated on the main magnetic circuit φ 1.This structure does not change the working gas gap δ 1 of electromagnet, but by setting up the relation of auxiliary magnetic circuit air gap delta 2 and electromagnetic attraction, can get susceptibility scope preferably, and its maximum effect is to increase the adjustable range of setting current, improves degree of regulation.
Claims (10)
1. the electromagnet structure that can adjust air gap comprises a yoke assembly (1); One static iron core (5) is fixed in the opening part of yoke assembly (1); One moving iron core (6), this moving iron core (6) is arranged at the opening part of yoke assembly (1) equally, and is corresponding with static iron core (5) and move on the direction of static iron core (5); One reaction spring (7), one end bearing of this reaction spring (7) is on yoke assembly (1), and the other end is bearing on the moving iron core (6), wherein: described moving iron core (6) and static iron core (5) constitute main magnetic circuit (φ 1) with yoke assembly (1), it is characterized in that also including a movable slider (2), quiet slide block (3) and slide adjustment (4), movable slider (2) is slidingly arranged on the described yoke assembly (1), quiet slide block (3) is fixed on the yoke assembly (1), and it is corresponding with movable slider (2), it is last and pivotally connected with described movable slider (2) that slide adjustment (4) is located at yoke assembly (1), and wherein: described movable slider (2) and quiet slide block (3) constitute auxiliary magnetic loop (Φ 2) with yoke assembly (1).
2. the electromagnet structure of adjusting air gap according to claim 1; it is characterized in that described yoke assembly (1) comprises yoke (11); static iron core seat (12); moving iron core base (13) and a pair of location-plate (14); the middle part of a pair of location-plate (14) respectively has the conductor chamber, primary circuit (141) that a conductor (9) that is used for the confession protective circuit passes through; described yoke (11) is positioned between a pair of location-plate (14); yoke (11) has a yoke chamber (111); this yoke chamber (111) is corresponding with conductor chamber, described primary circuit (141); static iron core seat (12) and moving iron core base (13) are positioned between a pair of location-plate (14); wherein: static iron core seat (12) is fixed on an end on the top of a pair of location-plate (14); and moving iron core base (13) is fixed on the other end on the top of a pair of location-plate (14); and it is corresponding with static iron core seat (12); described static iron core (5) is arranged on the described static iron core seat (12); described moving iron core (6) is arranged on the described moving iron core base (13); and it is corresponding with static iron core (5); constitute working gas gap (δ 1) between moving iron core (6) and the static iron core (5); and by described yoke (11); moving iron core (6) and working gas gap (δ 1) constitute the main magnetic circuit (Φ 1) around described conductor (9); described moving; static iron core (6; 5) is furnished with an induction coil (8) with center through hole (81) between; this induction coil (8) is corresponding to described yoke chamber (111); described reaction spring (7) is positioned at center through hole (81); and it is described moving; static iron core (6; 5) all probe in the center through hole (81); described quiet slide block (3) is fixed on an end on the top of a pair of location-plate (14); and the sliding other end that fits over the top of location-plate (14) of described movable slider (2); moving; quiet slide block (2; 3) constitute auxiliary magnetic circuit air gap (δ 2) between; electromagnetic attraction on the described main magnetic circuit (Φ 1) changes with the change of described auxiliary magnetic circuit air gap (δ 2), and described slide adjustment (4) is located on the location-plate (14).
3. the electromagnet structure of adjusting air gap according to claim 2, an end that it is characterized in that the top of described a pair of location-plate (14) respectively offers the static iron core positioning chamber (142) that a position corresponds to each other, and the other end on the top of a pair of location-plate (14) respectively offers the same corresponding mutually moving iron core positioning chamber (143) in a position, described static iron core seat (12) is set bead (121) constituting static iron core on the wall body of described static iron core positioning chamber (142), static iron core is set bead (121) and static iron core positioning chamber (142) scarf, described moving iron core base (13) is set bead (131) constituting moving iron core on the wall body of described moving iron core positioning chamber (143), moving iron core is set bead (131) and moving iron core positioning chamber (143) scarf, on described static iron core seat (12), offer static iron core hole (122), one end of described static iron core (5) is fixed in the static iron core hole (122), and the other end is insinuated in the end of center through hole (81) of described induction coil (8), on described moving iron core base (13), offer position and corresponding moving iron core hole, described static iron core hole (122) (132), one end of described moving iron core (6) is placed in the moving iron core hole (132), and the other end then is insinuated in the other end of center through hole (81) of induction coil (8).
4. the electromagnet structure of adjusting air gap according to claim 3, the inwall that it is characterized in that described static iron core hole (122) is provided with internal thread (1221), and an end of described static iron core (5) is provided with external screw thread (51), and external screw thread (51) matches with described internal thread (1221).
5. the electromagnet structure of adjusting air gap according to claim 1, it is characterized in that described moving iron core (6) constitutes a supporting step (61) towards an end of static iron core (5), one end bearing of described reaction spring (7) is on yoke assembly (1), and the other end then is bearing on the supporting step (61).
6. the electromagnet structure of adjusting air gap according to claim 5, it is characterized in that described yoke (11) respectively is extended with yoke tenon (113) towards the side of described a pair of location-plate (14), and a pair of location-plate (14) is gone up and offer mortise (144) at the position corresponding to yoke tenon (113), goes into mortise (144) and yoke (11) is positioned between a pair of location-plate (14) by yoke tenon (113) tenon.
7. the electromagnet structure of adjusting air gap according to claim 2, it is characterized in that respectively offering on the described a pair of location-plate (14) at least one pair of connecting rod hole (145) that the position corresponds to each other, inserted connecting rod (1451) in each connecting rod hole (145), on described yoke (11), offer that quantity equates with the quantity of connecting rod (1451) and position and connecting rod hole (145) corresponding connecting rod resigning holes (112), have a joint pin (21) on the outer wall of described movable slider (2), described slide adjustment (4) is provided on the connecting rod (1451).
8. the electromagnet structure of adjusting air gap according to claim 2, an end that it is characterized in that the top of described a pair of location-plate (14) respectively constitutes a pair of projection (146), described quiet slide block (3) and projection (146) build-in, the shape of cross section of described dynamic and static slide block (2,3) all is n shape.
9. according to claim 2 or the 6 or 7 described electromagnet structures of adjusting air gap, what it is characterized in that described yoke (11) is shaped as U-shaped or semicircle.
10. the electromagnet structure of adjusting air gap according to claim 7, it is characterized in that offering on the described slide adjustment (4) first, second sliding tray (41,42) and the 3rd sliding tray (43) and constitute a tooth section (44), wherein: first sliding tray (41) is nested with on described joint pin (21), and second, third sliding tray (42,43) is nested with on described connecting rod (1451), and tooth section (44) is formed in the edge of slide adjustment (4).
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| CN2010206143400U CN201868177U (en) | 2010-11-19 | 2010-11-19 | Electromagnet structure with adjustable air gap |
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| CN2010206143400U CN201868177U (en) | 2010-11-19 | 2010-11-19 | Electromagnet structure with adjustable air gap |
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| CN103456570A (en) * | 2013-09-02 | 2013-12-18 | 江苏省如高高压电器有限公司 | Electrical and mechanical independent adjusting mechanism in circuit breaker mechanism |
| CN103872944A (en) * | 2014-03-03 | 2014-06-18 | 浙江科技学院 | Precise-controlled micropower member and method |
| CN104051123A (en) * | 2014-06-09 | 2014-09-17 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnet structure |
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| CN104319201A (en) * | 2014-10-24 | 2015-01-28 | 大全集团有限公司 | Controllable double air gap electromagnetism tripping device |
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| CN103456570A (en) * | 2013-09-02 | 2013-12-18 | 江苏省如高高压电器有限公司 | Electrical and mechanical independent adjusting mechanism in circuit breaker mechanism |
| CN103456570B (en) * | 2013-09-02 | 2015-10-07 | 江苏省如高高压电器有限公司 | Electric and mechanical separate regulation mechanism in breaker mechanism |
| CN103872944A (en) * | 2014-03-03 | 2014-06-18 | 浙江科技学院 | Precise-controlled micropower member and method |
| CN103872944B (en) * | 2014-03-03 | 2016-05-04 | 浙江科技学院 | Accurate controlled microkinetic member and method |
| CN104051123B (en) * | 2014-06-09 | 2016-03-23 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnet structure |
| CN104051123A (en) * | 2014-06-09 | 2014-09-17 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnet structure |
| CN104124114A (en) * | 2014-06-24 | 2014-10-29 | 上海诺雅克电气有限公司 | Short-circuit protection action current adjusting method and device for multi-pole magnetic release |
| CN104124114B (en) * | 2014-06-24 | 2016-08-24 | 上海诺雅克电气有限公司 | The short-circuit protection action current control method of multipolar electromagnetic electrical apparatus release and device |
| US9991078B2 (en) | 2014-06-24 | 2018-06-05 | Noark Electrics (Shanghai) Co. Ltd. | Short-current protection action current adjusting method and device thereof and device for multi-pole electromagnetic release |
| CN104319201A (en) * | 2014-10-24 | 2015-01-28 | 大全集团有限公司 | Controllable double air gap electromagnetism tripping device |
| CN106610358A (en) * | 2017-01-21 | 2017-05-03 | 吉林大学 | Instrument and method for in-situ testing of material properties under force-electricity-heat-vertical magnetic field coupling condition |
| CN110473691A (en) * | 2019-08-08 | 2019-11-19 | 江西联创光电超导应用有限公司 | A kind of electromagnet air gap limit adjustment apparatus structure |
| CN110993457A (en) * | 2019-11-26 | 2020-04-10 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Setting-adjustable electromagnetic quick tripping device |
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