CN206451615U - Three section automatic transfer switching electric appliances and its drive device - Google Patents
Three section automatic transfer switching electric appliances and its drive device Download PDFInfo
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- CN206451615U CN206451615U CN201621489923.9U CN201621489923U CN206451615U CN 206451615 U CN206451615 U CN 206451615U CN 201621489923 U CN201621489923 U CN 201621489923U CN 206451615 U CN206451615 U CN 206451615U
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Abstract
The utility model discloses a kind of three sections automatic transfer switching electric appliance and its drive device, drive device includes symmetrically arranged first power sector and second source mechanism and the first party shaft assembly and second party shaft assembly that are connected respectively with the first power sector and second source mechanism；First power sector includes being arranged side by side and the first power supply closing coil component and the first switching winding component that inner passage is connected and the first dynamic iron core that in the first power supply closing coil component and the first switching winding component internal passage can move back and forth；Second source mechanism includes being arranged side by side and second source closing coil component and the second switching winding component that inner passage is connected and the second dynamic iron core that in second source closing coil component and the second switching winding component internal passage can move back and forth.In the utility model, two-wire coil assembly shares a dynamic iron core as power source, realizes three section functions of automatic transfer switching electric appliance, improves conversion speed.
Description
Technical field
The utility model is related to dual power supply technical field, more particularly to a kind of three sections automatic transfer switching electric appliance and its drive
Dynamic device.
Background technology
In automatic transfer switching electric appliance, the coil block of drive device is rotated by iron core movement driving square shaft.It is existing
Automatic change-over electric appliance with duplicate in, drive device is each only with a coil group per side power supply (a-power supply and B-source)
Part is only capable of realizing that A closes the two section functions that B is divided to and A is divided to B to close and can not realize AB electricity to that should have an iron core to drive same square shaft
Source reaches the function of double point positions.
Utility model content
The technical problems to be solved in the utility model is that sharing one there is provided a kind of two-wire coil assembly of single-side power moves
Iron core realizes divide-shut brake, improves opening velocity, simplifies the drive device of three section automatic transfer switching electric appliances of structure and has
Three section automatic transfer switching electric appliances of the drive device.
The utility model solves the technical scheme that its technical problem used：A kind of three sections automatic change-over is provided
The drive device of electrical equipment, including symmetrically arranged first power sector and second source mechanism and respectively with described first electricity
First party shaft assembly and second party shaft assembly that source mechanism and second source mechanism are connected；
First power sector include being arranged side by side and the first power supply closing coil component that inner passage is connected and
First switching winding component and it can come in the first power supply closing coil component and the first switching winding component internal passage
The first dynamic dynamic iron core of return；The second source that the second source mechanism includes being arranged side by side and inner passage is connected closes a floodgate
Coil block and the second switching winding component and can be in the second source closing coil component and the second switching winding component
The second dynamic iron core that inner passage moves back and forth.
Preferably, the first party shaft assembly and second party shaft assembly are arranged on first power sector and second source
Between mechanism, the first party shaft assembly is connected by first connecting rod with first dynamic iron core, the second square shaft group
Part is connected by second connecting rod with second dynamic iron core.
Preferably, first power sector also includes being separately positioned on the first power supply closing coil component and first
Two the first static iron cores in the inner passage of switching winding component, two first static iron cores are located at described first and moved respectively
The opposite sides of iron core；The second source mechanism also includes being separately positioned on the second source closing coil component and second
Two the second static iron cores in the inner passage of switching winding component, two second static iron cores are located at described second and moved respectively
The opposite sides of iron core.
Preferably, described first connecting rod one end connects the first party shaft assembly, and the other end passes through described in one closed on the
One static iron core is fixed in first dynamic iron core；Described second connecting rod one end connects the second party shaft assembly, and the other end is worn
The second static iron core described in one closed on is crossed to be fixed in second dynamic iron core.
Preferably, the drive device also includes driving arm, and the driving arm is connected to first power sector
Between second source mechanism；The first party shaft assembly closes on first power sector on the driving arm,
The second party shaft assembly closes on the second source mechanism on the driving arm；
The first switching winding component is located between the first power supply closing coil component and first party shaft assembly；Institute
The second switching winding component is stated to be located between the second source closing coil component and second party shaft assembly.
Preferably, the first party shaft assembly includes the first square shaft, the one end being rotatably provided on the driving arm
It is connected to the first connection sheet on first square shaft；One end of the first connecting rod is provided with cooperation in the driving arm side
First connecting portion, the first connecting portion is provided with the first bar hole, and the other end of the first connection sheet matched somebody with somebody by the first bearing pin
Conjunction connects the first connecting rod in first bar hole；
The second party shaft assembly includes the second square shaft for being rotatably provided on the driving arm, one end and is connected to institute
State the second connection sheet on the second square shaft；One end of the second connecting rod is provided with the second company coordinated in the driving arm side
Socket part, the second connecting portion is provided with the second bar hole, and the other end of the second connection sheet is coordinated described by the second bearing pin
The connection second connecting rod in second bar hole.
Preferably, the drive device also includes first switch component and the second switch being arranged on the driving arm
Component；The first switch component include being distributed in first pair in the rotation direction of first square shaft get an electric shock switch and
First auxiliary switch, described first pair switch electrical connection the first switching winding component that gets an electric shock, the first auxiliary switch electricity
Connect the first power supply closing coil component；
Second pair of electric shock that the second switch component includes being distributed in the rotation direction of second square shaft is opened
Close and the second auxiliary switch, described second pair switch electrical connection the second switching winding component that gets an electric shock, second auxiliary is opened
The powered-down connection second source closing coil component.
Preferably, the first party shaft assembly is also connected on first square shaft including one end and can be with the first party
The first power-off plate that axle is rotated, the other end of the first power-off plate is located at described first pair get an electric shock switch and the first auxiliary switch
Between, and separable shake-up first pair of electric shock switch or the first auxiliary switch；
The second party shaft assembly is also connected on second square shaft including one end and can rotated with second square shaft
Second power-off plate, it is described second power-off plate the other end be located at described second pair get an electric shock switch the second auxiliary switch between,
And separable described second pair of shake-up is got an electric shock and switched or the second auxiliary switch.
Preferably, first power sector also include first coil support, the first power supply closing coil component and
First switching winding component is arranged on the first coil support；
The second source mechanism also includes the second coil brace, the second source closing coil component and the second separating brake
Coil block is arranged on second coil brace.
The utility model also provides a kind of three sections automatic transfer switching electric appliance, including the driving dress described in any of the above
Put.
The beneficial effects of the utility model：Two-wire coil assembly per side power supply shares a dynamic iron core to be come as power source
The divide-shut brake of the unilateral contact of automatic transfer switching electric appliance is realized, simplifies structure, so as to realize three sections of automatic transfer switching electric appliance
Bit function, improves the conversion speed of divide-shut brake, can be suitable for big rated current automatic by conversion time control within 70ms
Transfer switching equipment product.
In addition, dynamic iron core stops after moving into place and drives square shaft component to stop operating by connecting rod, it is locked at and is worked as
Lower position, realizes mechanical locking.Touch switch component after being rotate in place by square shaft component so that divide-shut brake coil block power off,
Realize electrical interlocks.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of the drive device of three section automatic transfer switching electric appliances of the embodiment of the utility model one
Figure；
Fig. 2 is Fig. 1 cross-sectional view；
Fig. 3 is the structural representation in another angle of drive device shown in Fig. 1.
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate embodiment of the present utility model.
As shown in Figure 1, 2, the drive device of three section automatic transfer switching electric appliances of the embodiment of the utility model one, including
Symmetrically arranged first power sector 10 and second source mechanism 20 and respectively with the first power sector 10 and second source machine
First party shaft assembly 30 and second party shaft assembly 40 that structure 20 is connected.
Wherein, the first power sector 10 includes the first power supply closing coil component 11 and the first switching winding being arranged side by side
Component 12 and first dynamic iron core 13；The inside of first power supply closing coil component 11 and the first switching winding component 12
Passage is connected, and the first dynamic iron core 13 is arranged in the inner passage being connected, and can be closed along inner passage in the first power supply
Move back and forth between the switching winding component 12 of brake cable coil assembly 11 and first.First power supply closing coil component 11 is inhaled after being powered
Close the first dynamic iron core 13 so that the first dynamic iron core 13 is moved in the first power supply closing coil component 11；First switching winding group
The first dynamic iron core of adhesive 13 after part 12 is powered so that the first dynamic iron core 13 is moved in the first switching winding component 12.
First power sector 10 also includes being separately positioned on the first power supply closing coil component 11 and the first switching winding group
Two the first static iron cores 14 in the inner passage of part 12, two the first static iron cores 14 are respectively positioned at the relative of the first dynamic iron core 13
Both sides.Two the first static iron cores 14 relative first power supply closing coil components 11 and the first switching winding component 12 are static, and first
When dynamic iron core 13 moves back and forth, two ends can be supported only two sides of the first static iron core 14 respectively.
Further, the first power sector 10 also includes first coil support 15, the first power supply closing coil component 11 and the
One switching winding component 12 is arranged on first coil support 15.
Second source mechanism 20 includes the second source closing coil component 21 and the second switching winding component being arranged side by side
22 and second dynamic iron core 23；The inner passage of second source closing coil component 21 and the second switching winding component 22
It is connected, the second dynamic iron core 23 is arranged in the inner passage being connected, and can be along inner passage in second source closing line
Move back and forth between the switching winding component 22 of coil assembly 21 and second.Adhesive second after second source closing coil component 21 is powered
Dynamic iron core 23 so that the second dynamic iron core 23 is moved in second source closing coil component 21；Second switching winding component 22 leads to
The second dynamic iron core of adhesive 23 after electricity so that the second dynamic iron core 23 is moved in the second switching winding component 22.
Second source mechanism 20 also includes being separately positioned on second source closing coil component 21 and the second switching winding group
Two the second static iron cores 24 in the inner passage of part 22, two the second static iron cores 24 are respectively positioned at the relative of the second dynamic iron core 23
Both sides.Two the second static iron cores 24 relative second source closing coil components 21 and the second switching winding component 22 are static, and second
When dynamic iron core 23 moves back and forth, two ends can be supported only two sides of the second static iron core 24 respectively.
Further, second source mechanism 20 also includes the second coil brace 25, second source closing coil component 21 and the
Two switching winding components 22 are arranged on the second coil brace 25.
First party shaft assembly 30 and second party shaft assembly 40 be arranged on the first power sector 10 and second source mechanism 20 it
Between.Wherein, first party shaft assembly 30 is connected by first connecting rod 51 with the first dynamic iron core 13, and first dynamic iron core 13 is moved back
When dynamic, first party shaft assembly 30 is driven to rotate by first connecting rod 51.Second party shaft assembly 40 passes through second connecting rod 52 and second
Dynamic iron core 23 is connected, when the second dynamic iron core 23 moves back and forth, and drives second party shaft assembly 40 to rotate by second connecting rod 52.
Specifically, the one end of first connecting rod 51 connection first party shaft assembly 30, the other end passes through one first static iron core closed on
14 are fixed in the first dynamic iron core 13；The one end of second connecting rod 52 connection second party shaft assembly 40, the other end passes through one the closed on
Two static iron cores 24 are fixed in the second dynamic iron core 23.
Further, drive device also includes driving arm 50, and driving arm 50 is connected to the first power sector 10 and the
Between two power sectors 20.Specifically, the first coil support 15 and second source of the power sector 10 of driving arm 50 and first
Second coil brace 25 of mechanism 20 is connected.
First party shaft assembly 30 closes on the first power sector 10 on driving arm 50, the first switching winding component 12
Between the first power supply closing coil component 11 and first party shaft assembly 30.Second party shaft assembly 40 closes on second source mechanism
20 are arranged on driving arm, and the second switching winding component 22 is located at second source closing coil component 21 and second party shaft assembly
Between 40.
First party shaft assembly 30 includes the first square shaft 31 for being rotatably provided on driving arm 50, one end and is connected to first
The first connection sheet 32 on square shaft 31.One end of first connecting rod 51 is provided with the first connecting portion coordinated in the side of driving arm 50
511, first connecting portion 511 is provided with the first bar hole 512, and the other end of the first connection sheet 32 is coordinated by the first bearing pin 33
Connection first connecting rod 51 in first bar hole 512.When first dynamic iron core 13 moves back and forth, first connecting portion 511 is driven to rotate,
So as to drive the first bearing pin 33 to be slided wherein along the first bar hole 512, and then drive the first connection sheet 32 and the first square shaft 31
Rotate.
Second party shaft assembly 40 includes the second square shaft 41 for being rotatably provided on driving arm 50, one end and is connected to second
The second connection sheet 42 on square shaft 41；One end of second connecting rod 52 is provided with the second connecting portion coordinated in the side of driving arm 50
521, second connecting portion 521 is provided with the second bar hole 522, and the other end of the second connection sheet 42 is coordinated by the second bearing pin 43
Connection second connecting rod 52 in second bar hole 522.When second dynamic iron core 23 moves back and forth, second connecting portion 521 is driven to rotate,
So as to drive the second bearing pin 43 to be slided wherein along the second bar hole 522, and then drive the second connection sheet 42 and the second square shaft 41
Rotate.
Drive device also includes the first switch component and second switch component being arranged on driving arm 50.
With reference to Fig. 1,3, first switch component, which includes being distributed in first pair in the rotation direction of the first square shaft 31, to be touched
The auxiliary switch 61 of electric switch 62 and first, first pair of switch 62 that gets an electric shock electrically connects the first switching winding component 12, and the first auxiliary is opened
Close 61 and electrically connect the first power supply closing coil component 11.
Correspondence first switch component, first party shaft assembly 30 also includes the first power-off plate 34.First power-off plate 34 one end connects
It is connected on the first square shaft 31, can be rotated with the first square shaft 31；The other end of first power-off plate 34 is located at first pair of switch 62 that gets an electric shock
And first between auxiliary switch 61, and separable touch first pair of auxiliary switch 61 of switch 62 or first that gets an electric shock.First power supply is closed
After brake cable coil assembly 11 is powered, the first dynamic iron core of adhesive 13, the first dynamic iron core 13 is moved through first connecting rod 51 and drives first party
Axle 31 is rotated to correspondence direction, and the first square shaft 31, which is rotated, drives the first power-off plate 34 to rotate, and first is touched in the first power-off plate 34
After auxiliary switch 61 first power supply closing coil component 11 is powered off.Similarly, after the first switching winding component 12 is powered, inhale
The first dynamic iron core 13 is closed, the first dynamic iron core 13 is moved through first connecting rod 51 and drives the first square shaft 31 to be rotated to correspondence direction, the
One square shaft 31, which is rotated, drives the first power-off plate 34 to rotate, so that first after the first power-off plate 34 touches first pair of switch 62 that gets an electric shock
Switching winding component 12 is powered off.
Second switch component includes second pair of 72 He of switch of getting an electric shock being distributed in the rotation direction of the second square shaft 41
Second auxiliary switch 71, second pair of switch 72 that gets an electric shock electrically connects the second switching winding component 22, and the second auxiliary switch 71 is electrically connected
Second source closing coil component 21.
Correspondence second switch component, second party shaft assembly 40 also includes the second power-off plate 44.Second power-off plate 44 one end connects
It is connected on the second square shaft 41, can be rotated with the second square shaft 41；Another two end of second power-off plate 44 is located at second pair of switch 72 that gets an electric shock
And second between auxiliary switch 71, and separable touch second pair of auxiliary switch 71 of switch 72 or second that gets an electric shock.Second source is closed
After brake cable coil assembly 21 is powered, the second dynamic iron core of adhesive 23, the second dynamic iron core 23 is moved through second connecting rod 52 and drives second party
Axle 41 is rotated to correspondence direction, and the second square shaft 41, which is rotated, drives the second power-off plate 44 to rotate, and second is touched in the second power-off plate 44
After auxiliary switch 71 second source closing coil component 21 is powered off.Similarly, after the second switching winding component 22 is powered, inhale
The second dynamic iron core 23 is closed, the second dynamic iron core 23 is moved through second connecting rod 52 and drives the second square shaft 41 to be rotated to correspondence direction, the
Two square shafts 41, which are rotated, drives the second power-off plate 44 to rotate, so that second after the second power-off plate 44 touches second pair of switch 72 that gets an electric shock
Switching winding component 22 is powered off.
Three section automatic transfer switching electric appliances of the embodiment of utility model one, including above-mentioned drive device；Also include this
Body, drive device is arranged on body.
In three section automatic transfer switching electric appliances, include a-power supply (commonly use power supply) and B-source (i.e. standby electricity
Source)；The corresponding A power supply of first power sector 10, the corresponding B-source of second source mechanism 20.Three sections include：A points of B are closed, A conjunctions B divides,
Double points of AB.
Illustrated by taking Fig. 1 drive mechanism placement directions as an example.With reference to Fig. 1-3, in a-power supply and B-source while separating brake
During state, the energy storage extension spring mechanism of a-power supply body and the energy storage extension spring mechanism of B-source body drive first party shaft assembly 30 respectively
With second party shaft assembly 40 by the first power sector 10 and second source mechanism 20 from locking on double point positions.In double fragment bits
During state, if the first power supply closing coil component 11 to the first power sector 10 is powered, the first power supply closing coil component
11 the first dynamic iron cores of adhesive 13 drive first party shaft assembly 30 to rotate clockwise by first connecting rod 51, first party shaft assembly 30
The energy storage of a-power supply body energy storage extension spring mechanism is driven, then the drawing potential energy of a-power supply body energy storage extension spring mechanism release storage drives
The motion of a-power supply contact mechanism completes to close a floodgate, while the first power-off plate 34 on first party shaft assembly 30 touches the first auxiliary switch
61 power off the first power supply closing coil component 11, and the remaining drawing property potential energy of a-power supply body energy storage extension spring mechanism drives first party
Shaft assembly 30 is by the first power sector 10 from locking on the position of a-power supply combined floodgate B-source separating brake.If giving the first separating brake during this state
Coil block 12 is powered, then the first dynamic iron core of adhesive 13 of the first switching winding component 12 drives the first square shaft by first connecting rod 51
Component 30, which is rotated counterclockwise, completes separating brake, while the first power-off plate 34 on first party shaft assembly 30 touches first pair of switch that gets an electric shock
62 power off the first switching winding component 12, recover double fragment bit states.
Similarly, second source mechanism 20 can also complete the location status of B-source combined floodgate a-power supply separating brake.On body, A electricity
Mechanical interlocked connecting rod is provided between source moving contact and B-source moving contact, it is to avoid a-power supply and B-source occur while the position closed a floodgate
State.
To sum up, drive device of the present utility model, simple in construction, reliability is high, exert oneself big, speed is fast, packaging technology letter
It is single, it is adapted to large-scale production.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of drive device of three sections automatic transfer switching electric appliance, it is characterised in that including symmetrically arranged first power supply
Mechanism and second source mechanism and the first square shaft being connected respectively with first power sector and second source mechanism
Component and second party shaft assembly；
First power sector includes the first power supply closing coil component and first being arranged side by side and inner passage is connected
Switching winding component and it can be moved back in the first power supply closing coil component and the first switching winding component internal passage
The first dynamic dynamic iron core；The second source mechanism includes the second source closing coil being arranged side by side and inner passage is connected
Component and the second switching winding component and can be in the second source closing coil component and the second switching winding component internal
The second dynamic iron core that passage moves back and forth.
2. drive device according to claim 1, it is characterised in that the first party shaft assembly and second party shaft assembly are set
Put between first power sector and second source mechanism, the first party shaft assembly passes through first connecting rod and described first
Dynamic iron core is connected, and the second party shaft assembly is connected by second connecting rod with second dynamic iron core.
3. drive device according to claim 2, it is characterised in that first power sector also includes being separately positioned on
Two the first static iron cores in the inner passage of the first power supply closing coil component and the first switching winding component, two institutes
State the opposite sides that the first static iron core is located at first dynamic iron core respectively；The second source mechanism also includes being separately positioned on
Two the second static iron cores in the inner passage of the second source closing coil component and the second switching winding component, two institutes
State the opposite sides that the second static iron core is located at second dynamic iron core respectively.
4. drive device according to claim 3, it is characterised in that described first connecting rod one end connects first square shaft
Component, the first static iron core described in the other end through one closed on is fixed in first dynamic iron core；Described second connecting rod one end
The second party shaft assembly is connected, the second static iron core described in the other end through one closed on is fixed in second dynamic iron core.
5. drive device according to claim 2, it is characterised in that the drive device also includes driving arm, described
Driving arm is connected between first power sector and second source mechanism；The first party shaft assembly closes on described first
Power sector is arranged on the driving arm, and the second party shaft assembly closes on the second source mechanism and is arranged on described drive
On dynamic support；
The first switching winding component is located between the first power supply closing coil component and first party shaft assembly；Described
Two switching winding components are located between the second source closing coil component and second party shaft assembly.
6. drive device according to claim 5, it is characterised in that the first party shaft assembly includes being rotatably provided in
The first square shaft on the driving arm, one end are connected to the first connection sheet on first square shaft；The first connecting rod
One end is provided with the first connecting portion coordinated in the driving arm side, and the first connecting portion is provided with the first bar hole, the
The other end of a connecting piece is coordinated by the first bearing pin connects the first connecting rod in first bar hole；
The second party shaft assembly includes the second square shaft for being rotatably provided on the driving arm, one end and is connected to described the
The second connection sheet on two square shafts；One end of the second connecting rod is provided with the second connection coordinated in the driving arm side
Portion, the second connecting portion is provided with the second bar hole, and the other end of the second connection sheet is coordinated described the by the second bearing pin
The connection second connecting rod in two bar holes.
7. drive device according to claim 6, it is characterised in that the drive device also includes being arranged on the driving
First switch component and second switch component on support；The first switch component includes being distributed in first square shaft
Rotation direction on first pair get an electric shock switch and the first auxiliary switch, it is described first pair get an electric shock switch electrical connection it is described first point
Brake cable coil assembly, first auxiliary switch electrically connects the first power supply closing coil component；
The second switch component include being distributed in second pair in the rotation direction of second square shaft get an electric shock switch and
Second auxiliary switch, described second pair switch electrical connection the second switching winding component that gets an electric shock, the second auxiliary switch electricity
Connect the second source closing coil component.
8. drive device according to claim 7, it is characterised in that the first party shaft assembly is also connected to including one end
On first square shaft and can with first square shaft rotate first power-off plate, it is described first power-off plate the other end be located at institute
First pair is stated to get an electric shock between switch and the first auxiliary switch, and separable shake-up first pair of electric shock switch or the first auxiliary are opened
Close；
The second party shaft assembly also include that one end is connected on second square shaft and can be rotated with second square shaft the
Two power-off plates, the other end of the second power-off plate is located at described second pair and got an electric shock between switch and the second auxiliary switch, and can
Separation touches described second pair get an electric shock switch or the second auxiliary switch.
9. the drive device according to claim any one of 1-8, it is characterised in that first power sector also includes the
One coil brace, the first power supply closing coil component and the first switching winding component are arranged on the first coil support
On；
The second source mechanism also includes the second coil brace, the second source closing coil component and the second switching winding
Component is arranged on second coil brace.
10. a kind of three sections automatic transfer switching electric appliance, it is characterised in that including the driving described in claim any one of 1-9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621489923.9U CN206451615U (en) | 2016-12-30 | 2016-12-30 | Three section automatic transfer switching electric appliances and its drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621489923.9U CN206451615U (en) | 2016-12-30 | 2016-12-30 | Three section automatic transfer switching electric appliances and its drive device |
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| Publication Number | Publication Date |
|---|---|
| CN206451615U true CN206451615U (en) | 2017-08-29 |
Family
ID=59671697
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621489923.9U Active CN206451615U (en) | 2016-12-30 | 2016-12-30 | Three section automatic transfer switching electric appliances and its drive device |
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| CN (1) | CN206451615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411251A (en) * | 2018-11-30 | 2019-03-01 | 宁波耀华电气科技有限责任公司 | The two-way attracting device of passive coil self energy |
-
2016
- 2016-12-30 CN CN201621489923.9U patent/CN206451615U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411251A (en) * | 2018-11-30 | 2019-03-01 | 宁波耀华电气科技有限责任公司 | The two-way attracting device of passive coil self energy |
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