CN107958813A - A kind of electromagnetic actuator device and electromagnetic relay - Google Patents
A kind of electromagnetic actuator device and electromagnetic relay Download PDFInfo
- Publication number
- CN107958813A CN107958813A CN201711430191.5A CN201711430191A CN107958813A CN 107958813 A CN107958813 A CN 107958813A CN 201711430191 A CN201711430191 A CN 201711430191A CN 107958813 A CN107958813 A CN 107958813A
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- iron core
- magnetic
- shaped yoke
- actuator device
- dynamic iron
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
Abstract
The embodiment of the invention discloses a kind of electromagnetic actuator device and electromagnetic relay, wherein, electromagnetic actuator device includes static iron core and dynamic iron core, further includes：Iron core shell, U-shaped yoke and magnetic conductive board；Iron core shell line wraps up static iron core and dynamic iron core, and the first end of iron core shell sets static iron core, and second end sets dynamic iron core；Magnetic conductive board is arranged on the outside of the first end of iron core shell, and is contacted with static iron core, and the first side of U-shaped yoke is contacted with magnetic conductive board magnetic conduction, and the second side is contacted with dynamic iron core magnetic conduction so that static iron core, dynamic iron core, magnetic conductive board and U-shaped yoke form magnetic loop；Part I and remaining Part II between iron core shell, including the second side of U-shaped yoke and dynamic iron core, Part I are permeability magnetic material, and Part II is non-magnetic material.Technical solution provided in an embodiment of the present invention, can solve the magnetic conductive loop of existing magnetic drive unit there are gap, the problem of influencing magnetic conduction effect.
Description
Technical field
The present embodiments relate to electronic control device technical field, more particularly to a kind of electromagnetic actuator device and electromagnetism after
Electric appliance.
Background technology
Electromagnetic actuator device is common a kind of control assembly in life, and electromagnetic actuator device has what is closed or open
Function, and then often be applied to automatically control and wait on protection act, therefore the application of electromagnetic actuator device is extremely wide, electromagnetism drive
Dynamic device can be applied to communication, electronic instrument, automatically controls and is used as switch block with home appliance etc., can simultaneously serve as industry
The valve part of control fluid in control system.
Main control unit includes dynamic iron core, iron core shell, static iron core, U-shaped yoke, magnetic conduction in electromagnetic actuator device
Plate, push rod and return spring etc..After coil energization, the U-shaped yoke of magnetic conduction construction, dynamic iron core, static iron core, magnetic conductive board are formed and led
Magnetic loop, dynamic iron core then can realize switching function to static iron core is close under magneticaction.
But across iron core shell between U-shaped yoke and dynamic iron core so that whole magnetic conductive loop influences magnetic conduction there are gap
Effect.
The content of the invention
The present invention provides a kind of electromagnetic actuator device and electromagnetic relay, is returned with solving the magnetic conduction of existing magnetic drive unit
Road is there are gap, the problem of influencing magnetic conduction effect.
In a first aspect, an embodiment of the present invention provides a kind of electromagnetic actuator device, including static iron core and dynamic iron core, also wrap
Include：
Iron core shell, U-shaped yoke and magnetic conductive board；
The iron core shell line wraps up the static iron core and the dynamic iron core, described in the first end of the iron core shell is set
Static iron core, second end set the dynamic iron core；
The magnetic conductive board is arranged on the outside of the first end of the iron core shell, and is contacted with the static iron core, the U-shaped yoke
First side of iron is contacted with the magnetic conductive board magnetic conduction, and the second side is contacted with the dynamic iron core magnetic conduction so that the static iron core, dynamic iron
Core, magnetic conductive board and U-shaped yoke form magnetic loop；
Part I and residue between the iron core shell, including the second side of the U-shaped yoke and the dynamic iron core
Part II, the Part I is permeability magnetic material, and the Part II is non-magnetic material.
Second aspect, the embodiment of the present invention additionally provide a kind of electromagnetic relay, including described in any embodiment of the present invention
Electromagnetic actuator device, further include：Quiet contact point and moving contacting plate；
The moving contacting plate is connected with the one end of push rod away from dynamic iron core, and described under the drive of the push rod
Quiet contact point contact and disconnection.
Electromagnetic actuator device and electromagnetic relay provided in an embodiment of the present invention, wherein, electromagnetic actuator device is except quiet iron
Core and dynamic iron core, further include：Line wraps up static iron core and the iron core shell of dynamic iron core, specifically, the first end of iron core shell is set
Static iron core, second end set dynamic iron core；The magnetic conductive board being arranged on the outside of iron core shell first end, magnetic conductive board are contacted with static iron core；U
Type yoke, the first side of U-shaped yoke are contacted with magnetic conductive board magnetic conduction, and the second side is contacted with dynamic iron core magnetic conduction so that static iron core, dynamic iron
Core, magnetic conductive board and U-shaped yoke form magnetic loop.Wherein, iron core shell includes the Part I between U-shaped yoke and dynamic iron core
And remaining part, i.e. Part II, Part I is arranged to permeability magnetic material, Part II is arranged to non-magnetic material, makes
Obtaining between the second side of U-shaped yoke and dynamic iron core does not have magnetic gap, improves the magnetic property of whole electromagnetic actuator device, reduces
Dynamic iron core and the pick-up voltage of electrostatic paster and the power consumption of electromagnetic actuator device, enhance the energy saving effect of the electromagnetic actuator device
Fruit.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of electromagnetic actuator device provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of another electromagnetic actuator device provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of electromagnetic relay provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of another electromagnetic relay provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
It illustrate only part related to the present invention rather than entire infrastructure in description, attached drawing.
The embodiment of the present invention provides a kind of electromagnetic actuator device, and with reference to figure 1, Fig. 1 is one kind provided in an embodiment of the present invention
The structure diagram of electromagnetic actuator device, the electromagnetic actuator device include static iron core 11 and dynamic iron core 12, further include iron core shell
13rd, U-shaped yoke 14 and magnetic conductive board 15；
13 line of iron core shell wraps up static iron core 11 and dynamic iron core 12, and the first end of iron core shell 13 sets static iron core 11, the
Two ends set dynamic iron core 12；
Magnetic conductive board 15 is arranged on the outside of the first end of iron core shell 13, and is contacted with static iron core 11.The first of U-shaped yoke 14
Side is contacted with 15 magnetic conduction of magnetic conductive board, and the second side is contacted with 12 magnetic conduction of dynamic iron core so that static iron core 11, dynamic iron core 12, magnetic conductive board 15
And U-shaped yoke 14 forms magnetic loop；
Part I between iron core shell 13, including the second side of U-shaped yoke 14 and dynamic iron core 12 and remaining second
Part, Part I are permeability magnetic material, and Part II is non-magnetic material.
Main element of the electromagnetic actuator device as switch, available for the valve part of control fluid, for example, control current
And the switch of air-flow, the switch of communication, electronic instrument and home appliance is can be used for, for example, applying in electromagnetism relay
In device, the trigger switch as high current machine.
In the present embodiment, electromagnetic actuator device includes static iron core 11 and dynamic iron core 12, further includes line parcel static iron core 11
With the iron core shell 13 of dynamic iron core 12, as shown in Figure 1, iron core shell 13 tightly attaches static iron core 11 and dynamic iron core 12 is set, iron
The first end of core housing 13 sets static iron core 11, and second end sets dynamic iron core 12, static iron core 11 and 13 relative position of iron core shell
It is constant, and dynamic iron core 12 can according to and the magnetic force between static iron core 11 size, along the line direction of iron core shell 13 to quiet iron
Core 11 is close or remote, in the process, the operation that 12 pull switch component of dynamic iron core is opened and closed.
Magnetic conductive board 15 is arranged on the outside of the first end of iron core shell 13, and is fixedly connected with static iron core 11, optionally, leads
Magnetic sheet 15 is also fixedly connected with the first end of iron core shell 13, as shown in Figure 1, playing the role of conducting electromagnetism.U-shaped yoke 14 wraps
Three sides are included, the first side is longer, is contacted with 15 magnetic conduction of magnetic conductive board, as shown in Figure 1, the second side is shorter, with dynamic iron core 12 across iron core
13 magnetic conduction of shell contacts, and bottom surface side is used to connect above-mentioned first side and the second side, so that static iron core 11, dynamic iron core 12, magnetic conductive board
15 and U-shaped yoke 14 form complete magnetic loop, when electromagnetic force is more than given threshold, dynamic iron core 12 and static iron core 11 are mutual
Attract, dynamic iron core 12 is moved along iron core shell 13, and attracted with static iron core 11, when electromagnetic force is less than given threshold, moves iron
Core 12 is separated with static iron core 11.
As described above, the second side of U-shaped yoke 14 is contacted with dynamic iron core 12 every 13 magnetic conduction of iron core shell, can be by outside iron core
Shell 13 divides for two parts, and the iron core shell 13 for part that U-shaped yoke 14 is in contact with dynamic iron core 12 is set as Part I, iron core
The remainder of shell 13 is Part II, and Part I is arranged to permeability magnetic material, and Part II is non-magnetic material, is being made
During work, Part I and Part II are welded, composition iron core shell 13, then the second side of U-shaped yoke 14 is with moving
Iron core shell 13 between iron core 12 is permeability magnetic material, and magnetic gap, magnetic is not present in the magnetic circuit between U-shaped yoke 14 and dynamic iron core 12
It is lost low, improves the magnetic property of whole magnetic loop, U-shaped 14 appropriate reduce thickness of yoke will not influence magnetic property, institute
With the wall thickness of the second side of U-shaped yoke 14 is thinning, the cost of manufacture of U-shaped yoke 14 is saved.And traditional electromagnetic actuator device
Due to the not magnetic conduction of iron core shell 13, therefore magnetic loss is higher, and magnetic conduction effect is poor, and product consumption is big, the actuation electricity of dynamic iron core and iron core
Pressure is high, and in order to meet magnetic force requirement, the wall thickness of U-shaped yoke 14 can be than big more in the present embodiment, to the occupancy in whole space
It is larger, it is unfavorable for the Miniaturization Design of product.
Electromagnetic actuator device provided in an embodiment of the present invention is further included except static iron core and dynamic iron core：Line wraps up static iron core
With the iron core shell of dynamic iron core, specifically, the first end of iron core shell sets static iron core, second end sets dynamic iron core；It is arranged at
Magnetic conductive board on the outside of iron core shell first end, magnetic conductive board are contacted with static iron core；U-shaped yoke, the first side of U-shaped yoke and magnetic conductive board
Magnetic conduction contacts, and the second side is contacted with dynamic iron core magnetic conduction so that static iron core, dynamic iron core, magnetic conductive board and U-shaped yoke form magnetic and return
Road.Wherein, iron core shell includes the Part I between U-shaped yoke and dynamic iron core and remaining part, i.e. Part II, will
Part I is arranged to permeability magnetic material, and Part II is arranged to non-magnetic material so that between the second side of U-shaped yoke and dynamic iron core
There is no magnetic gap, improve the magnetic property of whole electromagnetic actuator device, improve the magnetic property of whole electromagnetic actuator device,
The pick-up voltage of dynamic iron core and static iron core and the power consumption of electromagnetic actuator device are reduced, reduces the generation of heat, is enhanced whole
The energy-saving effect of electromagnetic actuator device, in addition, can be thinning by the wall thickness of U-shaped the second side of yoke, save accounting for for electromagnetic actuator device
Use space.
On the basis of above-described embodiment, with reference to figure 2, Fig. 2 is another electromagnetic drive dress provided in an embodiment of the present invention
The structure diagram put.As shown in Fig. 2, dynamic iron core 12 and the iron core diameter of the second side relative position of U-shaped yoke 14 diminish；Iron
The housing diameter of the Part I of core housing 13 also diminishes, and forms sunk area.Dynamic iron core 12 and U-shaped yoke 14 in the present embodiment
The iron core diameter of relative position diminishes, i.e. dynamic iron core 12 and the iron core diameter of the Part I relative position of iron core shell 13 is less than
The iron core diameter of 12 other positions of dynamic iron core, with reference to figure 2, because 13 line of iron core shell wraps up dynamic iron core 12, then iron core shell 13
The iron core diameter of Part I can also diminish, and the sunk area (region shown in ellipse 10 in Fig. 2) shown in Fig. 2 be formed, so as to subtract
The material cost of small dynamic iron core 12, reduces the volume of electromagnetic actuator device.
Optionally, as shown in Fig. 2, the second side of U-shaped yoke 14 is embedded in sunk area, electromagnetic actuator device is further reduced
Volume.
Optionally, the thickness of U-shaped yoke 14 is not more than the cup depth of sunk area.As shown in Fig. 2, U-shaped yoke 14
Second side thickness reduces so that the second side and the non-contact face of iron core shell 13 and the shell of 13 Part II of iron core shell are neat
Flat, formation rule structure, while U-shaped 14 making material of yoke is saved, reduces the volume of electromagnetic actuator device, and formed
Regular and high integrated level structure.
It is worth noting that, static iron core 11 and dynamic iron core 12 can be cylinder, then the first side of U-shaped yoke 14, second
Side and bottom surface side form circular ring shape respectively；Static iron core 11 and dynamic iron core 12 can also be cuboid or square, then U-shaped yoke
The first side, the second side and the bottom surface side of iron 14 form rectangular ring structure respectively.In addition, static iron core 11 and dynamic iron core 12 may be used also
Think other stereochemical structures, iron core shell 13, U-shaped yoke 14 are the stereochemical structure being adapted to therewith.
Optionally, electromagnetic actuator device can also include electromagnetic coil (Fig. 1 and Fig. 2 not shown in), the electromagnetic coil
Winding iron core shell 13 is set.With reference to figure 1 or Fig. 2, a-quadrant is iron core shell 13, U-shaped yoke 14 and magnetic conductive board in figure
15 formed be used to place the regions of electromagnetic coil, electromagnetic coil be used to producing static iron core 11, dynamic iron core 12, magnetic conductive board 15 and
The magnetic line of force between U-shaped yoke 14, when the solenoid is activated, will form magnetic loop between above-mentioned several magnetic conduction constructions, when
When the electrical current of electromagnetic coil is more than setting electric current value while being more than given threshold (or supply voltage), dynamic iron core 12 and quiet iron
Core 11 is attracted.
Optionally, with reference to figure 1 or Fig. 2, the periphery of electromagnetic coil is pasted with insulating tape, or is provided with Insulating frame
16.Electromagnetic coil has identical current potential with U-shaped yoke 14 or iron core shell 13 in order to prevent, can use in electromagnetic coil
Periphery attaches the dielectric withstanding voltage between the method raising electromagnetic coil of insulating tape and iron core shell 13, but in rigor condition
Under, insulating cement carries breakdown danger, then between electromagnetic coil and iron core shell 13 and U-shaped yoke 14, sets insulation frame
Frame 16, ensures the electric isolution of electromagnetic coil.
Optionally, further included with reference to figure 1 or Fig. 2, electromagnetic actuator device：Push rod 17 and return spring 18；The activity of push rod 17
Static iron core 11 is placed through, and is fixedly connected with dynamic iron core 12；Return spring 18 is arranged on static iron core 11 and dynamic iron core on push rod 17
Position between 12.With reference to figure 1 and Fig. 2, static iron core 11 and dynamic iron core 12 are respectively arranged with the sky that part accommodates return spring 18
Chamber, when the supply voltage of electromagnetic coil is more than given threshold, produces stronger the suction-combining force between dynamic iron core 12 and static iron core 11,
Dynamic iron core 12 compresses return spring 18, is attracted with static iron core, when the supply voltage of electromagnetic coil is less than given threshold, dynamic iron core
The suction-combining force between 12 and static iron core 11 reduces, and is defeated by the elastic force of return spring 18, is returned spring 18 and separates.Push rod 17 is with moving
Iron core 12 is fixedly connected, then led during the movement of dynamic iron core 12 push rod 17 carry out stretching motion so that push rod 17 connect or
Switch contact is disconnected, or is turned on and off Fluid valve etc..
The embodiment of the present invention additionally provides a kind of electromagnetic relay, and electromagnetic relay is with less electric current, relatively low electricity
Pressure goes control larger current, one kind " automatic switch " of higher voltage, plays automatic adjustment, safeguard protection in circuit, turns
The effect such as circuit is changed, is a kind of structure diagram of electromagnetic relay provided in an embodiment of the present invention with reference to figure 3 or Fig. 4, Fig. 3,
Fig. 4 is the structure diagram of another electromagnetic relay provided in an embodiment of the present invention.Mainly introduced in the present embodiment electromagnetism after
The control section (low current part) of electric appliance, electromagnetic relay include the electromagnetic actuator device described in any embodiment of the present invention,
Further include：Quiet contact point 19 and moving contacting plate 20；
Moving contacting plate 20 is connected with the one end of push rod 17 away from dynamic iron core 12, under the drive of push rod 17, being connect with quiet
Contact 19 contacts and disconnects.When quiet contact point 19 and moving contacting plate 20 contact, then electromagnetic relay control high-current circuit is led
It is logical, when quiet contact point 19 and the separation of moving contacting plate 20, electromagnetic relay control high-current circuit shut-off, because high-current circuit
For operating voltage commonly greater than 380V, human body cannot directly remove the switch of touching high-current circuit, then electromagnetic relay is raw in industry
There is outstanding meaning, the electromagnetic relay in the present embodiment improves the magnetic property of electromagnetic relay, reduces electromagnetism in production
Relay power consumption, and the volume of electromagnetic relay can be reduced, provide the electromagnetic relay product of superior performance to the user.
Optionally, moving contacting plate 20 and push rod 17 are flexibly connected by buffer spring 23, for preventing moving contacting plate 20
Damage.Because the position that moving contacting plate 20 is fixed on push rod 17 error easily occurs in production, then moving contacting plate 20 is contacted with quiet
The dynamics during contact of point 19 also can be different, if moving contacting plate 20 is fixedly connected with push rod 17, moving contacting plate 20 and quiet contact point
19 when being contacted, and rigid collision easily occurs, and damages moving contacting plate 20 and quiet contact point 19.So using in Fig. 3 or Fig. 4
The buffer spring 23 shown causes moving contacting plate 20 and push rod 17 to be flexibly connected, and is connect in moving contacting plate 20 and quiet contact point 19
When touching, cushioning effect is played.
Optionally, buffer spring 23 and moving contacting plate 20 are limited to the position on push rod 17 by gasket 22 and clamp spring 21 respectively
Put.As shown in Figure 3 or Figure 4,17 upper end activity of push rod is worn as in moving contacting plate 20, which is located on the moving contacting plate 20
Clamp spring 21 is fixed with outside the part of side, which, which is located at outside the part of 20 downside of moving contacting plate, is arranged buffer spring
23, the lower section of buffer spring 23 is provided with gasket 22, and when push rod 17 moves up and down, its impact force action is in gasket 22 and clamp spring 21
On, protect moving contacting plate 20 and quiet contact point 19.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust, be combined with each other and substitute without departing from protection scope of the present invention.Therefore, although by above example to this
Invention is described in further detail, but the present invention is not limited only to above example, is not departing from present inventive concept
In the case of, other more equivalent embodiments can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of electromagnetic actuator device, including static iron core and dynamic iron core, it is characterised in that further include：Iron core shell, U-shaped yoke
And magnetic conductive board；
The iron core shell line wraps up the static iron core and the dynamic iron core, and the first end of the iron core shell sets the quiet iron
Core, second end set the dynamic iron core；
The magnetic conductive board is arranged on the outside of the first end of the iron core shell, and is contacted with the static iron core, the U-shaped yoke
First side is contacted with the magnetic conductive board magnetic conduction, and the second side is contacted with the dynamic iron core magnetic conduction so that the static iron core, dynamic iron core,
Magnetic conductive board and U-shaped yoke form magnetic loop；
Part I between the iron core shell, including the second side of the U-shaped yoke and the dynamic iron core and remaining
Two parts, the Part I are permeability magnetic material, and the Part II is non-magnetic material.
2. electromagnetic actuator device according to claim 1, it is characterised in that：
The iron core diameter of the dynamic iron core and the second side relative position of the U-shaped yoke diminishes；The first of the iron core shell
Partial housing diameter also diminishes, and forms sunk area.
3. electromagnetic actuator device according to claim 2, it is characterised in that：
Second side of the U-shaped yoke is embedded in the sunk area.
4. electromagnetic actuator device according to claim 3, it is characterised in that：
The thickness of the U-shaped yoke is not more than the cup depth of the sunk area.
5. electromagnetic actuator device according to claim 1, it is characterised in that further include：Electromagnetic coil, the electromagnetic coil
The iron core shell is wound to set.
6. electromagnetic actuator device according to claim 5, it is characterised in that：
The periphery of the electromagnetic coil is pasted with insulating tape, or is provided with Insulating frame.
7. electromagnetic actuator device according to claim 1, it is characterised in that further include：Push rod and return spring；
The push rod activity is placed through the static iron core, and is fixedly connected with the dynamic iron core；
The return spring is arranged on the position between the static iron core and the dynamic iron core on the push rod.
8. a kind of electromagnetic relay, it is characterised in that including claim 1-7 any one of them electromagnetic actuator devices, also wrap
Include：Quiet contact point and moving contacting plate；
The moving contacting plate is connected with the one end of push rod away from dynamic iron core, under the drive of the push rod, quiet is connect with described
Contact and disconnection.
9. electromagnetic relay according to claim 8, it is characterised in that：The moving contacting plate and the push rod pass through buffering
Spring is flexibly connected, for preventing the damage of the moving contacting plate.
10. electromagnetic relay according to claim 9, it is characterised in that：The buffer spring and the moving contacting plate point
The position not being limited to by gasket and clamp spring on the push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430191.5A CN107958813B (en) | 2017-12-26 | 2017-12-26 | Electromagnetic driving device and electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430191.5A CN107958813B (en) | 2017-12-26 | 2017-12-26 | Electromagnetic driving device and electromagnetic relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107958813A true CN107958813A (en) | 2018-04-24 |
| CN107958813B CN107958813B (en) | 2020-11-10 |
Family
ID=61955784
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711430191.5A Active CN107958813B (en) | 2017-12-26 | 2017-12-26 | Electromagnetic driving device and electromagnetic relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117411267A (en) * | 2023-12-15 | 2024-01-16 | 长沙矿冶研究院有限责任公司 | Electromagnetic driving device and application thereof |
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| CN103311051A (en) * | 2013-06-27 | 2013-09-18 | 哈尔滨工业大学 | Directly operated type superimposed permanent-magnetic T-shaped armature structure |
| CN105719910A (en) * | 2016-04-29 | 2016-06-29 | 浙江英洛华新能源科技有限公司 | Magnetic circuit system of high voltage direct current relay |
| CN207637719U (en) * | 2017-12-26 | 2018-07-20 | 尼普顿电器（昆山）有限公司 | A kind of electromagnetic actuator device and electromagnetic relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017366A1 (en) * | 1994-11-30 | 1996-06-06 | Siemens Aktiengesellschaft | Electromagnet switch |
| CN102737914A (en) * | 2012-07-02 | 2012-10-17 | 戴丁志 | Arc-quenching non-polar contactor |
| CN103311051A (en) * | 2013-06-27 | 2013-09-18 | 哈尔滨工业大学 | Directly operated type superimposed permanent-magnetic T-shaped armature structure |
| CN105719910A (en) * | 2016-04-29 | 2016-06-29 | 浙江英洛华新能源科技有限公司 | Magnetic circuit system of high voltage direct current relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117411267A (en) * | 2023-12-15 | 2024-01-16 | 长沙矿冶研究院有限责任公司 | Electromagnetic driving device and application thereof |
| CN117411267B (en) * | 2023-12-15 | 2024-03-22 | 长沙矿冶研究院有限责任公司 | Electromagnetic driving device and application thereof |
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|---|---|
| CN107958813B (en) | 2020-11-10 |
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