CN103426689A - Relay pushing mechanism - Google Patents

Relay pushing mechanism Download PDF

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Publication number
CN103426689A
CN103426689A CN2013102824069A CN201310282406A CN103426689A CN 103426689 A CN103426689 A CN 103426689A CN 2013102824069 A CN2013102824069 A CN 2013102824069A CN 201310282406 A CN201310282406 A CN 201310282406A CN 103426689 A CN103426689 A CN 103426689A
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CN
China
Prior art keywords
spring
insulating case
catch bar
pushing
moving
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CN2013102824069A
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Chinese (zh)
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CN103426689B (en
Inventor
钟叔明
施生圣
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厦门宏发电力电器有限公司
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Publication of CN103426689A publication Critical patent/CN103426689A/en
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Abstract

The invention discloses a relay pushing mechanism comprising a movable spring portion, a reaction spring, a main spring, a fixing disc, a pushing rod portion and a movable iron core. The pushing rod portion comprises an insulation sleeve and a pushing rod, the upper end of the pushing rod is fixedly connected with the insulation sleeve, and the lower end of the pushing rod is fixedly connected with the movable iron core. The movable spring portion and the main spring are sequentially sleeved into the insulation sleeve from the bottom of the insulation sleeve to the top to enable the upper end of the movable spring portion to be butted against the upper edge of the insulation sleeve, and the fixing disc is clamped at the bottom end of the insulation sleeve to enable the main spring to be elastically expanded to butt against a position between the lower end of the movable spring portion and the fixing disc. The lower end of the reaction spring butts against the top end of the insulation sleeve. By the aid of the relay pushing mechanism, imbalance of the movable spring portion can be avoided effectively so as to guarantee synchronism of two groups of contacts, and electrical life of a product is prolonged; processing technology can be simplified, the product is downsized, and processing and material costs are lowered.

Description

A kind of pushing mechanism of relay
Technical field
The present invention relates to a kind of relay, particularly relate to a kind of pushing mechanism of relay.
Background technology
Relay is cut-offfing of a kind of overload current that can frequently close, carry and cut-off normal current and regulation and closes locking device.Existing a kind of relay is to utilize the coil current flowing to produce magnetic field, makes contact closure, to reach the electrical equipment of control load.It is widely used in the fields such as electric power, distribution and electricity consumption.
The schematic diagram of the pushing mechanism of a kind of relay that Fig. 1 is prior art, pushing mechanism is contained in the framework of relay usually, this pushing mechanism comprises moving spring part 101, catch bar part 102, Compress Spring 103, static iron core 104, moving iron core 105 and returns power spring 106, wherein, catch bar part 102 includes catch bar 1021 and insulating case 1022, and insulating case 1022 has upper and lower two; Catch bar 1021, can be with respect to static iron core 104 reciprocating motions through the interstitial hole of static iron core 104, and insulating case 1022 is fixed on an end of catch bar 1021, and moving iron core 105 is fixed on the other end of catch bar 1021; Moving spring part 101 can move up and down through insulating case 1022, and an end of Compress Spring 103 heads on moving spring part 101; Returning 106, power spring withstands between moving iron core 105 and static iron core 104.This pushing mechanism of prior art exists following drawback:
1, in the middle of moving iron core and static iron core, counterbore is arranged, return the counterbore that power spring 106 is placed in dynamic and static iron core, this structure, can cause the moving iron core magnetic pole strength relative with static iron core to reduce, weaken actuating force and the confining force of moving iron core, in order to guarantee actuating force and the confining force of moving iron core, often need to make larger coil, thereby caused the raising of cost and the increase of small product size; Simultaneously, due to Compress Spring 103 with return power spring 106 and distributes up and down, be difficult to effectively to guarantee to move the synchronism of spring part 102 the right and lefts, properties of product are poor;
2, catch bar part 102 is mainly by upper and lower two of catch bar 1021 and insulating case 1022() form; In order be spacing to live insulating case, need to get on the bus sulculus 1023 or car one shaft shoulder 1024(as shown in Figure 2 at catch bar 1021), the structural representation of the catch bar of the pushing mechanism of the relay that Fig. 2 is prior art, retrain up and down by split washer and packing ring; Adopt this structure, catch bar complex structure, processing difficulties and size are difficult to assurance, and assembly technology is loaded down with trivial details simultaneously;
3, the common scheme of moving spring part 101 is copper sheet always, or riveted joint or weld the mode of two contacts on copper sheet always, and directly the one side of copper sheet acts on Compress Spring 103; This structure, Compress Spring 103 is large with the active area of copper sheet, when moving spring part 101 motion, especially when pitting of contact weares and teares, is difficult to guarantee synchronism and the balance of the right and left, and properties of product are difficult to assurance in the later stage;
4, the other end of catch bar 1021 and moving iron core 105 first are threaded connection, and then end is fixed catch bar and moving iron core by Laser Welding or argon arc welding mode, and this connected mode, cause production efficiency slow, and cost is high.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of pushing mechanism of relay is provided, both can effectively avoid the imbalance of moving spring part, to guarantee the synchronism of two groups of contacts, improve product electric life performance; Again can simplified processing process, reduce small product size, reduce processing cost and reduce material cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pushing mechanism of relay comprises moving spring part, returns power spring, main spring, fixed disk, catch bar partly and moving iron core; Described catch bar partly comprises insulating case and catch bar; The upper end of described catch bar and insulating case Joint, the lower end of described catch bar and moving iron core Joint; Described moving spring part and main spring upwards are inserted in insulating case from the below of insulating case successively and make spring upper end partly be against the Shang Yanchu of insulating case, and described fixed disk is installed on the bottom of insulating case and main spring elasticity is opened between the lower end and fixed disk that withstands on moving spring part; The lower end of the described power of returning spring is against the top of insulating case.
The described power of returning spring is conical Compress Spring, on the top of insulating case, is provided with groove, and the bottom of described conical Compress Spring is embedded in the groove on top of insulating case.
Described moving spring partly comprises two moving contacts and a movable contact spring, and described two moving contacts are the symmetrical both sides that are fixed on movable contact spring respectively; Described main spring is contained between movable contact spring and catch bar part along the shaft centre line of catch bar part; The bottom of described movable contact spring is to having two protuberances with radian, two convex portion other places are in the symmetrical centre position of two moving contacts, and make the protuberance of bottom of the upper surface of described main spring and movable contact spring tangent, thereby guarantee that the pressure of two moving contacts when pitting of contact is consistent all the time.
Described insulating case and catch bar are respectively independent part, and insulating case is provided with by the upwardly extending jack in bottom, between the upper end of catch bar and the jack of insulating case, adopt interference fit to fix.
Described insulating case and catch bar are integrated the monolithic construction that injection molding forms.
The bottom of described insulating case, along laterally outwards being provided with two symmetrical lugs, is respectively equipped with a positioning convex on two lugs, described fixed disk upwards is inserted in insulating case from the below of insulating case and is installed on the positioning convex of lug of the bottom of insulating case; Described fixed disk is provided with and two corresponding two hole clippings that match of positioning convex.
Described fixed disk is provided with and two perforates that lug is corresponding, so that fixed disk can upwards be inserted in insulating case by perforate and coordinating from the below of insulating case of two lugs.
Two hole clippings of described fixed disk are connected with the perforate of fixed disk respectively.
The edge of described fixed disk has upwards protruded out the multistage barricade, spacing in barricade in order to the lower end by main spring.
The lower end of described catch bar is provided with helicitic texture, and the lower end of catch bar adopts screw thread to be connected with moving iron core, and adopts the machine riveting mode to fix in the junction of catch bar and moving core ends.
Described machine riveting is for revolving riveting, expand riveting, spending riveting or cone riveting.
The invention has the beneficial effects as follows, compared with prior art, the present invention has following advantage:
1, the power of returning spring of the present invention adopts conical Compress Spring, is positioned in the groove on insulating case top, and conical Compress Spring can be avoided the problem of helical spring doubling-up, thereby can reduce small product size, reduces costs;
2, the present invention adopts and will return the top that the power spring is placed in pushing mechanism, be different from the common power spring that will return and be positioned over the middle scheme of dynamic and static iron core, the present invention program can effectively improve the magnetic pole strength area of dynamic and static iron core, the actuating force of improving product and confining force;
3, the present invention will return the top that the power spring is placed in pushing mechanism, and like this, moving spring part will be subject to the tensioning of lower spring (upper spring returns the power spring, and lower spring is main spring), can effectively avoid the imbalance of moving spring part, guarantees the synchronism of two groups of contacts;
4, catch bar of the present invention has partly comprised catch bar and insulating case, the two can link together by integrated injection molding or tight fit mode, and insulating case is with two lugs, fixed disk is provided with and two perforates that lug is corresponding, the fixed disk perforate just can pack into insulating case by being adjusted to after consistent with two lug directions, and is positioned on insulating case by the positioning convex of being located on lug; This structure has solved catch bar and moving spring SI semi-insulation problem, realized the initiatively location of spring simultaneously, and because catch bar can be made polished rod (TOE), thereby processing technology simplified, reduced processing cost and material cost, and the catch bar size easily is guaranteed; And common scheme to be catch bar be provided with a lot of sulculuses, then by split washer and pad, fix main spring, this structure, catch bar complex structure, processing difficulties and size be difficult to guarantee, assembly technology is loaded down with trivial details simultaneously;
5, moving spring of the present invention has partly comprised moving contact and movable contact spring, and movable contact spring is provided with two protuberances with radian, main spring acts on two protuberance places, in the electric life process, after there has been electrical wear contact, adopt this structure, can effectively guarantee the consistency of two groups of contact forces, thereby improve product electric life performance; Act on movable contact spring and common scheme is the main spring large tracts of land, be difficult to guarantee the consistency of two groups of contact forces;
6, catch bar of the present invention and moving iron core are first to be threaded connection, and then in moving core ends, adopt the mode of machine riveting that catch bar and moving iron core are tightened together, and the machine riveting mode can adopt various ways such as revolving riveting, expansion riveting, flower riveting, cone riveting; Adopt riveted joint, be different from the modes such as common Laser Welding, argon arc welding, can make cost greatly reduce.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But the pushing mechanism of a kind of relay of the present invention is not limited to embodiment.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of pushing mechanism of the relay of prior art;
Fig. 2 is the structural representation of catch bar of pushing mechanism of the relay of prior art;
Fig. 3 is structural representation of the present invention;
Fig. 4 is structure cutaway view of the present invention;
Fig. 5 is the schematic diagram that the present invention packs in the framework of relay;
Fig. 6 is insulating case of the present invention and the schematic diagram that coordinates that returns the power spring;
Fig. 7 is the structural representation of fixed disk of the present invention;
Fig. 8 is fixed disk of the present invention and the schematic diagram that coordinates of catch bar part;
Fig. 9 is fixed disk of the present invention and the schematic diagram that coordinates of insulating case;
Figure 10 is the structural representation of moving spring part of the present invention;
Figure 11 is catch bar of the present invention and the schematic diagram that coordinates of moving iron core;
Figure 12 is moving spring part of the present invention and the schematic diagram that coordinates of main spring;
Figure 13 is moving spring part of the present invention (during pitting of contact) and the schematic diagram that coordinates of main spring.
Embodiment
Embodiment, referring to shown in Fig. 3 to Figure 13, the pushing mechanism of a kind of relay of the present invention, comprise moving spring part 1, return power spring 2, main spring 3, fixed disk 4, catch bar part 5 and moving iron core 6; Described catch bar part 5 comprises insulating case 51 and catch bar 52; The upper end of described catch bar 52 and insulating case 51 Joints, the lower end of described catch bar 52 and moving iron core 6 Joints; Described moving spring part 1 and main spring 3 upwards are inserted in insulating case from the below of insulating case 51 successively and make the upper end of spring part 1 be against the upper along 511 of insulating case, and described fixed disk 4 is installed on the bottom of insulating case 51 and main spring 3 elasticity are opened between the lower end and fixed disk 4 that withstands on moving spring part 1; The lower end of the described power of returning spring 2 is against the top of insulating case 51.
The described power of returning spring 2 is conical Compress Spring, is provided with groove 512 on the top of insulating case 51, and the bottom that described conical Compress Spring returns power spring 2 is embedded in the groove 512 on top of insulating case 51.
Described moving spring part 1 comprises two moving contacts 11 and a movable contact spring 12, and described two moving contacts 11 are the symmetrical both sides that are fixed on movable contact spring 12 respectively; Described main spring 3 is contained between movable contact spring 12 and catch bar part 5 along the shaft centre line of catch bar part; The bottom of described movable contact spring 12 is to having two protuberances with radian 121, two protuberances 121 are in respectively the symmetrical centre position of two moving contacts 11, and make the protuberance 121 of bottom of the upper surface of described main spring 3 and movable contact spring tangent, thereby guarantee that the pressure of two moving contacts when pitting of contact is consistent all the time.As shown in Figure 12 and Figure 13, the protuberance 121 of moving spring is positioned at the centre of moving spring 12, thereby makes two groups of contacts symmetrical; Initiatively spring 3 acts on protuberance 121, and the arc of protuberance 121 is tangent with the upper surface of active spring 3; When pitting of contact, initiatively the end face of spring 3 is tangent with the arc of protuberance 121 all the time, thereby guarantees the consistency of two groups of contact forces (F1, F2), improves the performance of product.
In the present embodiment, described insulating case 51 and catch bar 52 are respectively independent part, and insulating case 51 is provided with by the upwardly extending jack 513 in bottom, between the upper end of catch bar 52 and the jack of insulating case 513, adopt interference fit to fix.Certainly, can be also another kind of scheme, described insulating case and catch bar are integrated the monolithic construction that injection molding forms.
The bottom of described insulating case 51 is along laterally outwards being provided with two symmetrical lugs 514, be respectively equipped with a positioning convex 515 on two lugs 514, described fixed disk 4 upwards is inserted in insulating case from the below of insulating case 51 and is installed on the positioning convex 515 of lug of the bottom of insulating case; Described fixed disk 4 is provided with and two corresponding two hole clippings 41 that match of positioning convex.
Described fixed disk 4 is provided with and two perforates 42 that lug 514 is corresponding, so that fixed disk 4 can upwards be inserted in insulating case 51 by perforate 42 and coordinating from the below of insulating case of two lugs 514.
For movable contact spring 12 can be inserted in insulating case from bottom to top, also to be provided with a hole 122 corresponding with two lugs 514 of insulating case on movable contact spring 12, like this, the movable contact spring 12 that could will move spring part 1 is inserted in insulating case.
Two hole clippings 41 of described fixed disk are connected with the perforate 42 of fixed disk respectively.
The edge of described fixed disk 4 has upwards protruded out multistage barricade 43, spacing in barricade in order to the lower end by main spring 3.
The lower end of described catch bar 52 is provided with helicitic texture 521, and the lower end of catch bar 52 adopts screw thread to be connected with moving iron core 6, and adopts the machine riveting mode to fix in the junction of catch bar and moving core ends.
Described machine riveting is for revolving riveting, expand riveting, spending riveting or cone riveting.
As shown in Figure 5, the present invention is mounted in the framework 7 of relay, and the top of the power of returning spring 2 of the present invention is to be against on framework 7, utilizes the support of framework 7 to realize resetting of pushing mechanism.
The pushing mechanism of a kind of relay of the present invention, comprise moving spring part 1, return power spring 2, main spring 3, fixed disk 4, catch bar part 5 and moving iron core 6, and wherein catch bar part 5 has comprised insulating case 51 and catch bar 52; By the straight line back and forth movement of pushing portion, realize switching on and off of system.Return power spring 2 and adopt conical Compress Spring, be positioned in the groove 512 at insulating case top; Conical Compress Spring 2 can be avoided the problem of cylindrical spring doubling-up, thereby reduces small product size, reduces costs.Return the top that power spring 2 is placed in pushing portion, be different from the common power spring that will return and be positioned over the middle scheme of dynamic and static iron core, can effectively improve the magnetic pole strength area of sound iron core, the actuating force of improving product and confining force; Be subject in addition the tensioning of upper lower spring (upper spring returns power spring 2, and lower spring is main spring 3) due to moving spring part 1, can effectively avoid the imbalance of moving spring part 1, guarantee the synchronism of two groups of contacts.Catch bar part 1 has comprised catch bar 52 and insulating case 51, and the two can link together by integrated injection molding or tight fit mode; Insulating case 51 is with two lugs 514, fixed disk 4 is provided with and two perforates 42 that lug 514 is corresponding, the perforate 42 of fixed disk is by being adjusted to and can packing into insulating case 51 after two lug 514 directions are consistent, and be stuck on insulating case by the positioning convex 515 of being located on lug 514, during clamping, the hole clipping 41 of fixed disk matches with the positioning convex 515 of insulating case 51; This structure has solved catch bar and moving spring SI semi-insulation problem, realized the initiatively location of spring simultaneously, and because catch bar 52 can be made polished rod (TOE), thereby processing technology simplified, reduced processing cost and material cost, and catch bar 52 sizes easily are guaranteed.Moving spring part 1 has comprised moving contact 11 and movable contact spring 12, and two protuberances with radian 121 are arranged on movable contact spring 12; Initiatively spring 3 acts on two protuberances 121, in the electric life process, after there has been electrical wear (while being pitting of contact) contact, adopts this structure, can effectively guarantee the consistency of two groups of contact forces, thereby improves product electric life performance.Catch bar and moving iron core are first to be threaded connection, and then in moving core ends, adopt the mode of machine riveting that catch bar and moving iron core are tightened together, and the machine riveting mode can adopt various ways such as revolving riveting, expansion riveting, flower riveting, cone riveting; Adopt riveted joint, be different from the modes such as common Laser Welding, argon arc welding, can make cost greatly reduce.
Above-described embodiment only is used for further illustrating the pushing mechanism of a kind of relay of the present invention; but the present invention is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all fall in the protection range of technical solution of the present invention.

Claims (10)

1. the pushing mechanism of a relay, is characterized in that: comprise moving spring part, return power spring, main spring, fixed disk, catch bar partly and moving iron core; Described catch bar partly comprises insulating case and catch bar; The upper end of described catch bar and insulating case Joint, the lower end of described catch bar and moving iron core Joint; Described moving spring part and main spring upwards are inserted in insulating case from the below of insulating case successively and make spring upper end partly be against the Shang Yanchu of insulating case, and described fixed disk is installed on the bottom of insulating case and main spring elasticity is opened between the lower end and fixed disk that withstands on moving spring part; The lower end of the described power of returning spring is against the top of insulating case.
2. the pushing mechanism of relay according to claim 1, it is characterized in that: the described power of returning spring is conical Compress Spring, on the top of insulating case, is provided with groove, the bottom of described conical Compress Spring is embedded in the groove on top of insulating case.
3. the pushing mechanism of relay according to claim 1, it is characterized in that: described moving spring partly comprises two moving contacts and a movable contact spring, described two moving contacts are the symmetrical both sides that are fixed on movable contact spring respectively; Described main spring is contained between movable contact spring and catch bar part along the shaft centre line of catch bar part; The bottom of described movable contact spring is to having two protuberances with radian, two convex portion other places are in the symmetrical centre position of two moving contacts, and make the protuberance of bottom of the upper surface of described main spring and movable contact spring tangent, thereby guarantee that the pressure of two moving contacts when pitting of contact is consistent all the time.
4. the pushing mechanism of relay according to claim 1, it is characterized in that: described insulating case and catch bar are respectively independent part, insulating case is provided with by the upwardly extending jack in bottom, between the upper end of catch bar and the jack of insulating case, adopts interference fit to fix.
5. the pushing mechanism of relay according to claim 1 is characterized in that: described insulating case and catch bar are integrated the monolithic construction that injection molding forms.
6. the pushing mechanism of relay according to claim 1, it is characterized in that: the bottom of described insulating case is along laterally outwards being provided with two symmetrical lugs, be respectively equipped with a positioning convex on two lugs, described fixed disk upwards is inserted in insulating case from the below of insulating case and is installed on the positioning convex of lug of the bottom of insulating case; Described fixed disk is provided with and two corresponding two hole clippings that match of positioning convex.
7. the pushing mechanism of relay according to claim 6, it is characterized in that: described fixed disk is provided with and two perforates that lug is corresponding, so that fixed disk can upwards be inserted in insulating case by perforate and coordinating from the below of insulating case of two lugs.
8. the pushing mechanism of relay according to claim 7, it is characterized in that: two hole clippings of described fixed disk are connected with the perforate of fixed disk respectively.
9. the pushing mechanism of relay according to claim 1, it is characterized in that: the edge of described fixed disk has upwards protruded out the multistage barricade, spacing in barricade in order to the lower end by main spring.
10. the pushing mechanism of relay according to claim 1, it is characterized in that: the lower end of described catch bar is provided with helicitic texture, the lower end of catch bar adopts screw thread to be connected with moving iron core, and adopts the machine riveting mode to fix in the junction of catch bar and moving core ends.
CN201310282406.9A 2013-07-05 2013-07-05 Relay pushing mechanism Active CN103426689B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105782475A (en) * 2016-04-22 2016-07-20 宁波奥凯安全科技有限公司 Device for reliable electromagnetism self-maintenance of electromagnetic core
CN105529218B (en) * 2014-12-25 2017-03-15 比亚迪股份有限公司 A kind of relay pushing mechanism and relay
CN107204259A (en) * 2016-03-18 2017-09-26 比亚迪股份有限公司 A kind of relay
CN107204257A (en) * 2016-03-18 2017-09-26 比亚迪股份有限公司 A kind of relay
CN107871643A (en) * 2017-10-27 2018-04-03 浙江宏舟新能源科技有限公司 A kind of HVDC relay and its assembly method using riveting dynamic iron core

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201413803Y (en) * 2009-04-10 2010-02-24 林李杰 Change-over switch of power-saving contactor
CN102856123A (en) * 2012-09-19 2013-01-02 宁波黎明继电器有限公司 Relay
CN203339074U (en) * 2013-07-05 2013-12-11 厦门宏发电力电器有限公司 Pushing mechanism of relay

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201413803Y (en) * 2009-04-10 2010-02-24 林李杰 Change-over switch of power-saving contactor
CN102856123A (en) * 2012-09-19 2013-01-02 宁波黎明继电器有限公司 Relay
CN203339074U (en) * 2013-07-05 2013-12-11 厦门宏发电力电器有限公司 Pushing mechanism of relay

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529218B (en) * 2014-12-25 2017-03-15 比亚迪股份有限公司 A kind of relay pushing mechanism and relay
CN107204259B (en) * 2016-03-18 2019-01-29 比亚迪股份有限公司 A kind of relay
CN107204259A (en) * 2016-03-18 2017-09-26 比亚迪股份有限公司 A kind of relay
CN107204257A (en) * 2016-03-18 2017-09-26 比亚迪股份有限公司 A kind of relay
CN107204257B (en) * 2016-03-18 2019-03-29 比亚迪股份有限公司 A kind of relay
CN105782475B (en) * 2016-04-22 2018-12-11 宁波奥凯安全科技有限公司 A kind of device making the reliable electromagnetism self-insurance of electromagnet core
CN105782475A (en) * 2016-04-22 2016-07-20 宁波奥凯安全科技有限公司 Device for reliable electromagnetism self-maintenance of electromagnetic core
CN107871643A (en) * 2017-10-27 2018-04-03 浙江宏舟新能源科技有限公司 A kind of HVDC relay and its assembly method using riveting dynamic iron core

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