CN109036988A - The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device - Google Patents

The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device Download PDF

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Publication number
CN109036988A
CN109036988A CN201810745702.0A CN201810745702A CN109036988A CN 109036988 A CN109036988 A CN 109036988A CN 201810745702 A CN201810745702 A CN 201810745702A CN 109036988 A CN109036988 A CN 109036988A
Authority
CN
China
Prior art keywords
magnetic conductive
trigger device
conductive part
fixing member
electromagnetism trigger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810745702.0A
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Chinese (zh)
Inventor
于贻鹏
彭琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Liangxin Electrical Co Ltd
Original Assignee
Shanghai Liangxin Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Liangxin Electrical Co Ltd filed Critical Shanghai Liangxin Electrical Co Ltd
Priority to CN201810745702.0A priority Critical patent/CN109036988A/en
Publication of CN109036988A publication Critical patent/CN109036988A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms

Abstract

The permanent magnetism mounting structure of electromagnetism trigger device, it includes magnetic conductive part (1) and bracket (2), the magnetic conductive part (1) and bracket (2) are fitted together, it is characterized by: being equipped with magnet fixing member (3) on the magnetic conductive part (1), permanent magnet (4) is in the mounting portion (301) on the magnet fixing member (3).The permanent magnetism mounting structure of electromagnetism trigger device provided by the invention and the electromagnetism trigger device, by adding permanent magnet installation device, simplify the structure and assembly technology of electromagnetism trigger device, improve the efficiency of electromagnetism trigger device assembly, the stability and reliability of electromagnetism trigger device performance are enhanced, ensure that the ability of anti-electromagnetic impact.

Description

The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device
Technical field
The invention belongs to breaker technical fields, be specifically exactly be related to electromagnetism trigger device permanent magnetism mounting structure and The electromagnetism trigger device.
Background technique
Breaker realizes the protection feature needed for it by installation buckle releaser, its working principle is that: if working as control line When short circuit current or electric shock leakage current over the ground having occurred in road, and reaching breaker protection class, the electronics of buckle releaser swashs Magnetic coil produces contrary with permanent magnet after obtaining enough voltage in the original closed actuation magnetic circuit of buckle releaser Magnetic field to counteract permanent magnet generation magnetic field strength, be now in compressive state thrust spring release and pop up, Push rod is shifted onto, push rod release power triggering shunt release and line disconnection, protect line security.The buckle releaser course of work In be using electromagnet principle realize short circuit or earth leakage protective.Electromagnetic leakage protective device is because stable and reliable in work, tripping is special Property many advantages, such as not influenced by network voltage and be widely used, the core devices of electromagnetic leakage protective device are that electromagnetism is de- Device is detained, the magnetic parameter of magnetictrip directly decides the power of earth leakage protective characteristic, therefore magnetictrip tripping is special Property stabilization shape for breaker quality it is most important.
Magnetictrip is also known as electromagnetism trigger device, and electromagnetism trigger device is made of electromagnetic assembly and encapsulating housing, electromagnetism Component includes the parts such as trigger element, magnetic conductive part, coil block, release spring, permanent magnet, jumper bar composition, and trigger element is logical Working pole of the suction adsorption in magnetic conductive part of magnet steel offer is provided, once leakage current generates counter magnetic flux by coil windings, with The positive magnetic flux that magnet steel generates is offset, the retentivity of electromagnetism trigger device is not enough to overcome release spring active force, i.e. triggering member Part pushes jumper bar to unlock mechanism on the protective switch of adaptation and disconnecting circuit.Electromagnetism trigger device is as the important of protective switch Attachment, it is desirable that there is reliable and stable, small in size, the features such as precision is high, electromagnetism interference, while it is big to meet yield, it is high-efficient, at This cheap requirement.
Electromagnetism trigger device common at present is analyzed from manufacturing process angle, and the positioning method of permanent magnet needs to use Hollow copper rivet or Laser Welding fetch realization, and process increases.When using riveting method, the magnetic conductive part table that is bonded with permanent magnet Face needs first to be ground to carry out in next step again, and part is small and exquisite, manual operation low efficiency;When using laser welding, machine assistance Production, needs special frock clamp, and input cost is high.Therefore, existing electromagnetism trigger device assembles complex during fabrication.
Summary of the invention
The purpose of the present invention is to the above-mentioned existing electromagnetism trigger device technological deficiency that structure is complicated is difficult to assemble, By adding permanent magnet installation device, the structure and assembly technology of electromagnetism trigger device are simplified, electromagnetism trigger device is improved The efficiency of assembly enhances the stability and reliability of electromagnetism trigger device performance, ensure that the ability of anti-electromagnetic impact.
Technical solution
In order to achieve the above technical purposes, the permanent magnetism mounting structure for the electromagnetism trigger device that the present invention designs, it includes Magnetic conductive part and bracket, the magnetic conductive part and bracket are fitted together, it is characterised in that: magnet fixing member is housed on the magnetic conductive part, Permanent magnet is in the mounting portion on the magnet fixing member, the supporting part plug connection of the magnet fixing member and magnetic conductive part, The clamping connection of the left side wall of the bracket and magnetic conductive part.
Further, the magnet fixing member include matrix one, described matrix one bottom abut be mounted on the magnetic conductive part Supporting part surface on, the mounting portion is set to the upper surface of described matrix one, stretches on the bottom of described matrix one or side wall Positioning convex platform out, the positioning convex platform are inserted into the mounting groove of the magnetic conductive part, and the side of described matrix one is equipped with recess portion One, the recess portion one is equipped with anti-delinking part one, and the side wall of the bracket is equipped with retainer one corresponding with anti-delinking part one, described Anti-delinking part one and retainer one cooperation can the magnet fixing member direction straight up freedom degree.
Further, the mounting portion is through-hole or slot, and the magnetic conductive part is U-shaped, plane where the mounting portion center line It is parallel with the two side arms of the U-shaped magnetic conductive part.
Further, the magnet fixing member includes matrix two, and the bottom of described matrix two, which abuts, is mounted on the magnetic conductive part Supporting part surface on, the mounting portion is set on the upper surface of described matrix two, and the side of described matrix two is equipped with recessed Portion two, the vertical table wall of the recess portion two are equipped with biasing portion, and the water-glass wall of the recess portion two is equipped with anti-delinking part two, described inclined Splenium is connect with anti-delinking part two, and the cooperation of retainer two being correspondingly arranged on the anti-delinking part two and the bracket both side plate can limit Make the protrusion that the magnet fixing member is arranged in the freedom degree in direction straight up, the biasing portion and the bracket both side plate Cooperation can limit magnet fixing member freedom degree in the horizontal direction.
Further, the protrusion, which is located on the both side plate of the bracket, has elasticity.
Further, the side wall of the magnet fixing member is equipped with stopper, on the coil of the stopper and electromagnetism trigger device Scotch it is mating with limit be sleeved on the right side wall of magnetic conductive part coil sliding.
The present invention also provides a kind of electromagnetism trigger devices, it is characterised in that: it includes above-mentioned permanent magnetism mounting structure.
Beneficial effect
The permanent magnetism mounting structure of electromagnetism trigger device provided by the invention and the electromagnetism trigger device, by adding permanent magnetism Body mounting device simplifies the structure and assembly technology of electromagnetism trigger device, improves the efficiency of electromagnetism trigger device assembly, increases The strong stability and reliability of electromagnetism trigger device performance, ensure that the ability of anti-electromagnetic impact.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of electromagnetism trigger device in the embodiment of the present invention one.
Attached drawing 2 is the exploded view of electromagnetism trigger device in the embodiment of the present invention one.
Attached drawing 3 is the structural schematic diagram of magnetic conductive part in the embodiment of the present invention one.
Attached drawing 4 is the structural schematic diagram of magnet fixing piece in the embodiment of the present invention one.
Attached drawing 5 is the top view of magnet fixing piece in the embodiment of the present invention one.
Attached drawing 6 is the structural schematic diagram of bracket in the embodiment of the present invention one.
Attached drawing 7 is the structural schematic diagram of one coil of the embodiment of the present invention.
Attached drawing 8 is the structural schematic diagram of electromagnetism trigger device in the embodiment of the present invention two.
Attached drawing 9 is the structural schematic diagram of magnet fixing piece in the embodiment of the present invention two.
Attached drawing 10 is the structural schematic diagram of bracket in the embodiment of the present invention two.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
First embodiment: as shown in figure 1 and 2, a kind of electromagnetism trigger device, it includes mask 6, one and mask 6 snap connection and form the U-shaped magnetic conductive part 1 of bottom cover 7, one there are two polar end face of closed cavity, an inserting and link closely Bracket 2 on U-shaped magnetic conductive part 1, one for unbuttoning or the jumper bar 8 of reset function, one drive jumper bar 8 do linear movement and One end engages the trigger element 9 to make rotating motion with the pivot on U-shaped magnetic conductive part 1, and one is sleeved on swashing on U-shaped magnetic conductive part 1 Magnetic coil 5, one drives trigger element 9 to separate with U-shaped magnetic conductive part 1 so that electromagnetism trigger device generates the release bullet of trip action Spring 10, an offer magnetic attraction is to overcome 10 reaction force of release spring and drive the both ends of trigger element 9 Yu U-shaped magnetic conductive part 1 The permanent magnet 4 that face 111,131 is kept in contact, pivot I are made of the both ends of the surface 111,131 of U-shaped magnetic conductive part 1 and the table wall of bracket 2, The engagement pivot I rotary motion of 9 one end of trigger element and the both ends of the surface 111,131 that can be moved to U-shaped magnetic conductive part 1, which are formed, closes Magnetic circuit is closed, 10 one end of release spring and bracket 2 are mechanically connected and the other end and trigger element 9 are mechanically connected, what coil 5 generated Electromagnetic force drives the separation of the both ends of the surface 111,131 of trigger element 9 and U-shaped magnetic conductive part 1 and the electromagnetic force and release spring 10 are common The countertorque of effect is greater than the holding torque of permanent magnet 4, as shown in figure 3, U-shaped magnetic conductive part 1 is sequentially connected left side wall 11, bearing Portion 101, right side wall 13, U-shaped structure.
As shown in attached drawing 1,2 and 4, which further includes magnet fixing member 3, is designed to inserting permanent magnet It 4 and is fixed on U-shaped magnetic conductive part 1 and realizes positioning to permanent magnet 4.
As shown in Figures 4 and 5, the magnet fixing member 3 includes the bottom abutting installation of matrix 1, described matrix 1 On the surface of the supporting part 101 of the magnetic conductive part 1, the mounting portion 301 is set to the upper surface of described matrix 1, described Two positioning convex platforms 302a, the positioning convex platform 302a are stretched out on the bottom of matrix 1 or side wall is inserted into the magnetic conductive part Magnet fixing member 3 can be carried out in 1 mounting groove 102 laterally, it is lateral co-locate, the mounting portion 301 is through-hole or slot, The side of described matrix 1 is equipped with one 302b of recess portion at two, and one 302b of recess portion is equipped with one 302b01 of anti-delinking part, The side wall 201 of the bracket 2 is equipped with retainer one 201a corresponding with one 302b01 of anti-delinking part, one 302b01 of anti-delinking part With one 201a of retainer cooperation can the magnet fixing member 3 direction straight up freedom degree.In the present embodiment, preferably pacify Plane where 301 center line of dress portion is parallel with the two side arms of the U-shaped magnetic conductive part 1, guarantees that permanent magnet 4 is smoothly installed.
As shown in attached drawing 1,2 and 7, the side wall of the magnet fixing member 3 is equipped with stopper 304, the stopper 304 and electromagnetism Scotch 501 on the coil 5 of trigger device contacts the sliding that can limit coil 5.Matrix 1 is contained in bracket 2 Between the side wall 201 that principal plane two sides vertically extend, side wall 201 can also be used to the lateral shifting of limitation magnet fixing member 3 It is dynamic.
As shown in attached drawing 1,2 and 6, bracket 2 includes grab 23,24, and side wall 201, buckling parts 25, side wall 201 led by bracket 2 Plane two sides vertically extend, and 201 edge of side wall inwardly stretches out grab 23,24 about central symmetry, one 201a of retainer respectively On side wall 201, buckling parts 25 is set on the principal plane of bracket 2, and grab 23,24 has elasticity, and there are one for grab 23,24 Fixed magnitude of interference is used to achieve the effect that tight fit installation, magnitude of interference in the inserting to the left side wall 11 of U magnetic conductive part 1 of bracket 2 It is 0.01-0.03mm, buckling parts 25 has elasticity, and buckling parts 25 is fastened with the hole on the left side wall 11 of U-shaped magnetic conductive part 1 Cooperation is to prevent the upper bracket 2 for being inserted into U magnetic conductive part 1 from loosening.
Coil 5: being first sleeved on the right side wall 13 of U-shaped magnetic conductive part 1 by the assembling process of the present embodiment first, 5 bottom of coil Portion is contacted with the 101 table wall of supporting part of U-shaped magnetic conductive part 1, i.e., right side wall 13 is passed through from the through-hole of coil 5, and exposes right side wall End face on 13;Then, magnet fixing member 3 is inserted into the mounting groove 102 of U-shaped magnetic conductive part 1,3 bottom of magnet fixing member with it is U-shaped The 101 table wall of supporting part of magnetic conductive part 1 contacts, and the stopper 304 of magnet fixing member 3 is abutted with the scotch 501 on 5 skeleton of coil matches It closes;Then, the left side wall 11 of the inserting setting direction of bracket 2 and U-shaped magnetic conductive part 1 is arranged unanimously, i.e. vertical direction, by bracket 2 On the left side wall 11 of U-shaped magnetic conductive part 1, grab 23,24 is located at the 11 inner surface wall side of left side wall of U-shaped magnetic conductive part 1, and bracket 2 is inserted First micro opening and 11 inner surface wall of left side wall of U-shaped magnetic conductive part 1 offset the process grab 23,24 of dress, by the work in direction of insertion Firmly drive bracket 2 is mobile to terminate in 2 bottom of bracket and the 101 table wall of supporting part of U-shaped magnetic conductive part 1 offsets, and the buckling parts of bracket 2 205 are interlocked with hole on the left side wall 11 of U-shaped magnetic conductive part 1, and realization bracket 2 is fixedly connected with U-shaped magnetic conductive part 1;Finally, branch One 201a of retainer and one 302b01 of anti-delinking part of magnet fixing member 3 on frame 2 offset, i.e., the freedom degree of magnet fixing member 3 is logical The limitation for crossing U-shaped magnetic conductive part 1 and bracket 2 is fixed on U-shaped magnetic conductive part 1;
As shown in attached drawing 8,9 and 10, the present invention also provides second embodiment be: the magnet fixing member 3 can also Being includes matrix 2 303, and the bottom of described matrix 2 303 abuts on the surface for the supporting part 101 for being mounted on the magnetic conductive part 1, The mounting portion 301 is set on the upper surface of described matrix 2 303, and the side of described matrix 2 303 is equipped with two 303a of recess portion, The vertical table wall of two 303a of recess portion is equipped with biasing portion 303a01, and the water-glass wall of two 303a of recess portion is equipped with anti-delinking part Two 303a02, the biasing portion 303a01 are connect with two 303a02 of anti-delinking part, 2 liang of two 303a02 of anti-delinking part and the bracket 2 201 ' a of the retainer cooperation being correspondingly arranged on side plate 201 ' can limit the magnet fixing member 3 in direction straight up 201 ' b of the protrusion cooperation being arranged on freedom degree, the biasing portion 303a01 and 2 both side plate 201 ' of bracket can limit described The freedom degree in the horizontal direction of magnet fixing member 3.Raised 201 ' the b, which is located on the both side plate 201 ' of the bracket 2, has bullet Property.
The assembling process of the present embodiment: first magnet fixing member 3 is placed on 101 position of supporting part of U-shaped magnetic conductive part 1, magnetic Right side wall 13 of the stopper 304 of ferropexy part 3 towards U-shaped magnetic conductive part 1;Then the both side plate 201 ' of bracket 2 is sleeved on U-shaped On the left side wall 11 of magnetic conductive part 1, the 201 ' b of protrusion on bracket 2 and location hole cooperation on the left side wall 11 of U-shaped magnetic conductive part 1, branch Frame 2 is fitted on the 11 outside table wall of left side wall of U-shaped magnetic conductive part 1,2 process of mounting bracket, the 201 ' b of protrusion on 2 side plate of bracket The sliding of 3 table wall of magnet fixing member is carried over, in sliding process protrusion is opened gently towards outside since protrusion itself has elasticity, Horn mouth is formed, until being fastened on the position biasing portion 303a01 of magnet fixing member 3, magnet fixing member 3 is tightly attached to U-shaped magnetic conduction 1 table wall of part;2 201 ' a of retainer on 2 side plate of bracket is contacted with two 303a02 of anti-delinking part of magnet fixing member 3 simultaneously;Coil 5 It is fixedly installed on U-shaped magnetic conductive part 1.
The permanent magnetism mounting structure of electromagnetism trigger device provided by the invention and the electromagnetism trigger device, by adding permanent magnetism Body mounting device simplifies the structure and assembly technology of electromagnetism trigger device, improves the efficiency of electromagnetism trigger device assembly, increases The strong stability and reliability of electromagnetism trigger device performance, ensure that the ability of anti-electromagnetic impact.
Structure depicted in this specification institute accompanying drawings of the embodiment of the present invention, ratio, size, quantity etc., only to cooperate specification Revealed content is not intended to limit the invention enforceable restriction item so that those skilled in the art understands and reads Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing Under the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain and can contain In the range of lid.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre ", " clockwise ", " inverse time in this specification The term of needle " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.

Claims (7)

1. the permanent magnetism mounting structure of electromagnetism trigger device, it includes magnetic conductive part (1) and bracket (2), the magnetic conductive part (1) and branch Frame (2) is fitted together, it is characterised in that: magnet fixing member (3) is housed on the magnetic conductive part (1), permanent magnet (4) is mounted in the magnetic In mounting portion (301) on ferropexy part (3), supporting part (101) grafting of the magnet fixing member (3) and magnetic conductive part (1) connects It connects, the left side wall (11) of the bracket (2) and magnetic conductive part (1), which is clamped, to be connected.
2. the permanent magnetism mounting structure of electromagnetism trigger device as described in claim 1, it is characterised in that: the magnet fixing member (3) include matrix one (302), described matrix one (302) bottom abut and be mounted on the supporting part (101) of the magnetic conductive part (1) Surface on, the mounting portion (301) be set to described matrix one (302) upper surface, the bottom or side of described matrix one (302) Positioning convex platform (302a) is stretched out on wall, the positioning convex platform (302a) is inserted into the mounting groove (102) of the magnetic conductive part (1), The side of described matrix one (302) is equipped with recess portion one (302b), and the recess portion one (302b) is equipped with anti-delinking part one The side wall (201) of (302b01), the bracket (2) are equipped with retainer one (201a) corresponding with anti-delinking part one (302b01), The anti-delinking part one (302b01) and retainer one (201a) cooperation can the magnet fixing member (3) in direction straight up Freedom degree.
3. the permanent magnetism mounting structure of electromagnetism trigger device as claimed in claim 2, it is characterised in that: the mounting portion It (301) is through-hole or slot, the magnetic conductive part (1) is U-shaped, plane and the U-shaped magnetic conduction where mounting portion (301) center line The two side arms of part (1) are parallel.
4. the permanent magnetism mounting structure of electromagnetism trigger device as described in claim 1, it is characterised in that: the magnet fixing member It (3) include matrix two (303), the bottom of described matrix two (303) abuts the supporting part (101) for being mounted on the magnetic conductive part (1) Surface on, the mounting portion (301) be set to described matrix two (303) upper surface on, on the side of described matrix two (303) Equipped with recess portion two (303a), the vertical table wall of the recess portion two (303a) is equipped with biasing portion (303a01), the recess portion two The water-glass wall of (303a) is equipped with anti-delinking part two (303a02), and the biasing portion (303a01) and anti-delinking part two (303a02) are even It connects, the retainer two (201 ' a) being correspondingly arranged on the anti-delinking part two (303a02) and the bracket (2) both side plate (201 ') is matched Conjunction can limit the magnet fixing member (3) in the freedom degree in direction straight up, the biasing portion (303a01) and the branch It is in the horizontal direction that protrusion (201 ' b) cooperation being arranged on frame (2) both side plate (201 ') can limit the magnet fixing member (3) Freedom degree.
5. the permanent magnetism mounting structure of electromagnetism trigger device as claimed in claim 4, it is characterised in that: the protrusion (201 ' B) there is elasticity on the both side plate (201 ') of the bracket (2).
6. the permanent magnetism mounting structure of electromagnetism trigger device as described in claim 1, it is characterised in that: the magnet fixing member (3) side wall is equipped with stopper (304), the scotch (501) on the coil (5) of the stopper (304) and electromagnetism trigger device It is mating to be slided with limiting the coil (5) being sleeved on the right side wall (13) of magnetic conductive part (1).
7. a kind of electromagnetism trigger device, it is characterised in that: it includes described in any one of the claims 1~6 claim Permanent magnetism mounting structure.
CN201810745702.0A 2018-07-09 2018-07-09 The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device Pending CN109036988A (en)

Priority Applications (1)

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CN201810745702.0A CN109036988A (en) 2018-07-09 2018-07-09 The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810745702.0A CN109036988A (en) 2018-07-09 2018-07-09 The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device

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CN109036988A true CN109036988A (en) 2018-12-18

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005268031A (en) * 2004-03-18 2005-09-29 Fuji Electric Fa Components & Systems Co Ltd Release-type electromagnetic solenoid
CN103594295A (en) * 2013-11-08 2014-02-19 上海诺雅克电气有限公司 Trip device of residual current operated circuit-breaker
CN103632888A (en) * 2012-08-24 2014-03-12 欧姆龙株式会社 Electromagnet device, method of assembling the same, and electromagnetic relay using the same
CN104810217A (en) * 2015-04-28 2015-07-29 大全集团有限公司 Magnetizer-added controllable electromagnetic trip device and tripping method
CN108074785A (en) * 2017-12-12 2018-05-25 上海良信电器股份有限公司 A kind of electromagnetic release
CN208521882U (en) * 2018-07-09 2019-02-19 上海良信电器股份有限公司 The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005268031A (en) * 2004-03-18 2005-09-29 Fuji Electric Fa Components & Systems Co Ltd Release-type electromagnetic solenoid
CN103632888A (en) * 2012-08-24 2014-03-12 欧姆龙株式会社 Electromagnet device, method of assembling the same, and electromagnetic relay using the same
CN103594295A (en) * 2013-11-08 2014-02-19 上海诺雅克电气有限公司 Trip device of residual current operated circuit-breaker
CN104810217A (en) * 2015-04-28 2015-07-29 大全集团有限公司 Magnetizer-added controllable electromagnetic trip device and tripping method
CN108074785A (en) * 2017-12-12 2018-05-25 上海良信电器股份有限公司 A kind of electromagnetic release
CN208521882U (en) * 2018-07-09 2019-02-19 上海良信电器股份有限公司 The permanent magnetism mounting structure of electromagnetism trigger device and the electromagnetism trigger device

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