CN206340492U - A kind of high-voltage DC contactor - Google Patents
A kind of high-voltage DC contactor Download PDFInfo
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- CN206340492U CN206340492U CN201621025833.4U CN201621025833U CN206340492U CN 206340492 U CN206340492 U CN 206340492U CN 201621025833 U CN201621025833 U CN 201621025833U CN 206340492 U CN206340492 U CN 206340492U
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Abstract
The utility model discloses a kind of high-voltage DC contactor, including base, shell, assembling housing, pushing mechanism assembly and contact monomer assembly, the pushing mechanism assembly is installed on the centre position of the base top, the shell is two pieces and two pieces housing top end is respectively and fixedly installed to contact on the both sides of monomer assembly bottom, shell bottom it is affixed with base on, the contact monomer assembly is located at pushing mechanism assembly top and contact monomer assembly is made up of side by side several normally opened contact monomers separated with dividing plate, and the dividing plate bottom is weldingly fixed on shell；The assembling housing is two pieces and two pieces assembling housing clamps shell rear and front end.The utility model is simple and compact for structure, and many contactor lines are driven using a push pedal, and by designing brand-new arc quenching system, greatly improves the service life of contactor.
Description
Technical field
The utility model is related to electric switching system and manufactures and designs field, a kind of high-voltage DC contactor of specific design.
Background technology
With developing rapidly for current market industry (new-energy automobile, 4G communication power supplies, wind-power electricity generation, track traffic),
Requirement to high-voltage DC contactor loaded work piece voltage is also improved constantly, and wherein new-energy automobile high-voltage DC contactor is loaded
Voltage request scope in 450V~600V, track traffic high-voltage DC contactor load voltage claimed range 1500V~
2000V, its load capacity is also accordingly improved, in order to solve what is produced in traditional contactors when high voltage is loaded and switched on and off
Electric arc and can not break, the phenomenon of the failure for causing main contacts to burn, in order to improve high-voltage DC contactor service life, it is necessary to
Arc extinguishing technology is studied, moreover, track traffic is numerous with circuit, each circuit is intended to be equipped with power switch system contact
Device, connection is inconvenient and installs cumbersome, and being additionally, since the scattered arc system problem of contactor of the prior art causes many contactors not
Can be used for the contactor of the high direct current of the high pressure, when often result in the electric arc produced when opening or closing circuit and burn out contactor.Therefore rail
Road traffic needs often to change contactor so that cost of labor increase, manufacturing cost also increases.
The content of the invention
The utility model aims to provide a kind of high-voltage DC contactor, to solve to there is above-mentioned height in existing contactor technology
Straightening stream contactor arc-extinguishing chamber arc extinguishing causes damage and in rail line and its cumbersome not in time, to contactor
Deng.
The utility model is achieved by following technical solution：
A kind of high-voltage DC contactor, including base, shell, assembling housing, pushing mechanism assembly and contact monomer assembly,
The pushing mechanism assembly is installed on the centre position of the base top, and the shell is two pieces and two pieces housing top end is distinguished
On the both sides for being fixedly mounted on contact monomer assembly bottom, shell bottom it is affixed with base, the contact monomer assembly is located at
Pushing mechanism assembly top and contact monomer assembly be made up of side by side several normally opened contact monomers separated with dividing plate, this every
Plate bottom is weldingly fixed on shell；The assembling housing is two pieces and two pieces assembling housing clamps shell rear and front end.
The pushing mechanism assembly is by coil tube, bobbin, support, adjusting washer (disk), electromagnet, sleeve, iron core and promotion
Plate is constituted, and wherein coil tube is in support and coil tube bottom is fixed on the centre position of base top, and the bobbin is
Hollow I-shaped wheel construction and coil is placed in coil tube, the adjusting washer (disk), electromagnet and sleeve three are from top to bottom successively
Overlay in bobbin, the socket of sleeve top is cored, and iron core top is fixedly connected pushing plate center.
It is described it is normally opened contact monomer by arc-extinguish chamber, quiet contact chip, return spring, moving contacting plate, magnetic blow-out system, interlock frame and
Contact spring is constituted, and the quiet contact chip is two panels and its top is arcuate structure, and housing top end is fixed in the middle part of quiet contact chip
And quiet contact chip top intrados is provided with the magnetic blow-out system being arranged in dividing plate, the magnetic blow-out system two ends both pass through dividing plate and are connected with
Fine motion piece is switched；The arc-extinguish chamber bottom is arranged on the top of shell and quiet contact chip is inserted out from arc-extinguish chamber bottom, the contact
Spring top is fixed in the gearing frame inner tip, and connection moving contacting plate in contact spring bottom interlocks frame bottom and is provided with translot,
In the translot inserting pushing plate and interlocking be provided with the middle part of frame be horizontally through in strip translot, the strip translot two ends be fixed in every
Location-plate on plate, the return spring bottom is fixedly mounted on location-plate.
The arc-extinguish chamber is made up of two valve arc extinguishing over body cases, and inverted U is equipped with per valve arc-extinguish chamber enclosure interior top and is moved and is drawn
Arc piece, dynamic arc striking piece both sides are equipped with some insulation flash barriers, and insulation flash barrier bottom is provided with quiet arc striking piece；The arc extinguishing case
Body is provided with bolt hole, and two valve arc extinguishing over body cases are linked together by bolt.
The axis of the return spring and the axis of contact spring are on the same line.
With the company of being welded and fixed between the coil tube and base, between shell and base, between quiet contact chip and shell
Connect；Shell is clamped by Lengthened bolt between two pieces assembling housing.
The insulation flash barrier is sawtooth sector structure and is evenly arranged in arc extinguishing over body case in enclosed to moving contacting plate
Inwall.
Stationary contact is equipped with the quiet contact chip top extrados of two panels, the moving contacting plate two ends are all provided with outer surface
There is movable contact；The dynamic contact point is with stationary contact on same vertical direction.
The contact monomer assembly is three normally opened contact monomer compositions.
The beneficial effects of the utility model are：
Compared with prior art, a kind of high-voltage DC contactor that the utility model is provided, there is following advantage：
1. the key switch of multi-line one, economical and practical and peace can be more applicable compared to traditional contactor by designing multiple contact contacts
Dress is convenient；
2. arc-extinguish chamber of the present utility model is added using two valve arc extinguishing over body cases of the fan-shaped type insulation arc grating of Saw blade
Quiet arc striking piece, dynamic arc striking piece and the multinomial arc extinguishing part combination of magnetic blow-out system, are elongated electric arc, are cut off, cooling down arc extinguishing, being improved
The C-V characteristic of electric arc is so that arc extinction, reduces the transfer to the ablation slider material of contact, greatly improve to electric arc
Extinguish efficiency, greatly reduce infringement of the electric arc to contact chip；
3. return spring is designed, when needing to close electric current, the instantaneous of extreme temperatures can be produced between the contact chip of sound two
Electric arc, at this moment return spring two contact chips can be flicked with time, from electric arc calcination, be effectively protected two contact chips；
4. fine motion piece switch be set on contactor, fine motion piece switch also can concomitant rotation, i.e. master worker can be from the outside
Know whether circuit is connected, observational technique is simple and clear accurate.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that the utility model removes the left view after dividing plate；
Fig. 3 is normally opened contact monomer structure schematic diagram of the present utility model；
Fig. 4 is pushing mechanism assembly structure schematic diagram of the present utility model；
Fig. 5 is pushing mechanism assembly explosive view of the present utility model；
Fig. 6 is arc-extinguish chamber schematic diagram of the present utility model；
Fig. 7 is arc-extinguish chamber housing interior structure schematic diagram of the present utility model；
In figure：The normally opened contact monomers of 1-, 2- bases, 3- shells, 4- arc-extinguish chambers, the quiet contact chips of 5-, 6- assembling housings, 7- is micro-
Moving plate is switched, 8- dividing plates, 9- assembly holes, 10- mounting holes, 11- coil tubes, 12- bobbins, 13- supports, 14- adjusting washer (disk)s,
15- electromagnet, 16- sleeves, 17- iron cores, 18- pushing plates, 19- arc-extinguish chamber mounting holes, 20- return springs, the quiet arc striking pieces of 21-,
22- moving contacting plates, 23- magnetic blow-out systems, 24- contact springs, 25- moves arc striking piece, and 26- insulation flash barriers, 27- bolts hole, 28- goes out
Arc over body case, 29- movable contacts, 30- stationary contacts, 31- interlocks frame, 32- spacers.
Embodiment
The technical solution of the utility model is described further below in conjunction with accompanying drawing, but required protection domain is not
It is confined to described；
As shown in Fig. 1~7, a kind of high-voltage DC contactor that the utility model is provided, including base 2, shell 3, assembling
Housing 6, pushing mechanism assembly and contact monomer assembly, the pushing mechanism assembly are installed on the top centre position of base 2
On, the shell 3 is two pieces and the top of two pieces shell 3 is respectively and fixedly installed to contact on the both sides of monomer assembly bottom, shell 3
Bottom it is affixed with base 2 on, the contact monomer assembly located at pushing mechanism assembly top and contact monomer assembly by three
Constituted side by side with the normally opened contact monomer 1 that dividing plate 8 is separated, the bottom of dividing plate 8 is weldingly fixed on shell 3；The assembling housing 6
For two pieces and two pieces assembling housing 6 clamps the rear and front end of shell 3, shell 3 is mainly for the protection of pushing mechanism assembly and as connecing
The mounting seat of monomer assembly is touched, total structure is from the bottom up：The lowermost end of base 2 and the ground of base 2 are provided with some mounting holes 10,
It is pushing mechanism assembly, base 2 for whole contactor to be installed on into centre position on all kinds of rail traffic vehicles, base 2
Upper the right and left is the shell 3 of welding, and front and rear both sides are then assembling housings 6, and the top of shell 3 is several contact monomer assemblies.
The pushing mechanism assembly is by coil tube 11, bobbin 12, support 13, adjusting washer (disk) 14, electromagnet 15, sleeve
16th, iron core 17 and pushing plate 18 are constituted, and wherein coil tube 11 is in support 13 and the bottom of coil tube 11 is fixed in the top of base 2
On centre position, the bobbin 12 is hollow I-shaped wheel construction and bobbin 12 is placed in coil tube 11, the adjusting washer (disk)
14th, electromagnet 15 and the three of sleeve 16 overlay in bobbin 12 successively from top to bottom, the top of sleeve 16 socket cored 17, iron
The top of core 17 is fixedly connected the center of pushing plate 18；The pushing mechanism assembly structure is simply compact, is produced using coil electricity
Magnetic field, band dynamic iron core 17 moves up and down to promote pushing plate 18 to move up and down.
The normally opened contact monomer 1 is by arc-extinguish chamber 4, quiet contact chip 5, return spring 20, moving contacting plate 22, magnetic blow-out system
23rd, interlock frame 31 and contact spring 24 is constituted, the quiet contact chip 5 is two panels and its top is arcuate structure, in quiet contact chip 5
Portion is fixed in the top of shell 3 and the top intrados of quiet contact chip 5 is provided with the magnetic blow-out system 23 being arranged in dividing plate 8, the magnetic blow-out system
Unite 23 two ends both pass through dividing plate 8 be connected with fine motion piece switch 7；The bottom of arc-extinguish chamber 4 is arranged on the top of shell 3 and quiet contact
Piece 5 is inserted out from the bottom of arc-extinguish chamber 4, and the top of contact spring 24 is fixed in the gearing inner tip of frame 31, contact spring 24
Bottom connects moving contacting plate 22, and gearing frame 31 bottom is provided with translot, the translot to insert pushing plate 18 and interlock frame middle part and is provided with
The location-plate 32 that a two ends are fixed on dividing plate, the bottom of return spring 20 are horizontally through in strip translot, the strip translot
It is fixedly mounted on location-plate 32.The quiet bottom of contact chip 5 of two panels connects external high pressure AC line, passes through 22 liang of top and moving contacting plate
End is connected/disconnected, so that UNICOM/disconnection hvdc transmission line, when quiet contact chip 5 contacts or disconnected that moment with moving contacting plate 22
Between can produce the electric arc that temperature is up to 2,000 ° or so, larger is influenceed on contactor, the principle of magnetic blow-out system 23 be using magnetic field by
Permanent-magnet steel is produced, therefore, polarized direction, and sufficiently strong magnetic field, effect of the electric arc in magnetic field are produced by magnetic pole, magnetic conduction sheet
Under, it is elongated rapidly and enters in arc-extinguish chamber 4, electric arc, which elongates generation arc drop value, is also accordingly increased, arc drop >=power supply
During voltage, it is zero to make loop current, reaches the effect of arc extinction；Quiet contact chip 5 is provided with static contact 30 by the utility model
One end is set as arc, then by magnetic blow-out system 23 in intrados, the contact area between increase magnetic blow-out system 23 and contact chip,
The effective utilization rate for improving magnetic blow-out system 23, greatly improves the transfer velocity to electric arc, accelerates the extinguishing of electric arc.
The arc-extinguish chamber 4 is made up of two valve arc extinguishing over body cases 28, and inverted U is equipped with per the inner tip of valve arc extinguishing over body case 28
Dynamic arc striking piece 25, the dynamic both sides of arc striking piece 25 are equipped with some insulation flash barriers 26, and insulation flash barrier 26 bottom is provided with quiet arc striking piece
21；The arc extinguishing over body case 28 is provided with bolt hole 27, two valve arc extinguishing over body cases 28 is linked together by bolt, in magnetic blow-out
In the presence of system 23, two contact chips are contacted or disconnected the top that the electric arc produced blows to insulation flash barrier 26, increase electric arc
With the contact area on insulation flash barrier 26 surface, so as to strengthen cooling and the deionization of electric arc, promote the extinguishing of electric arc.
The axis of the return spring 20 on the same line, makes return spring 20 in decline with the axis of contact spring 24
Shi Buhui produces deflection because deviateing contact spring 24, quiet contact chip 5 is contacted reliable and stable with moving contacting plate 22.
To weld between the coil tube 11 and base 2, between shell 3 and base 2, between quiet contact chip 5 and shell 3
It is fixedly connected；Two assembly holes 9 are provided with assembling shell 6, shell 3 are clamped from front and rear using Lengthened bolt.
The insulation flash barrier 26 is sawtooth sector structure and is evenly arranged in arc-extinguish chamber in enclosed to moving contacting plate 22
The inwall of housing 28, magnetic blow-out system 23 by electric arc blow to insulation flash barrier 26 top, this interprocedual increase electric arc with insulation every
The contact area on the surface of arc grid 26, so as to strengthen cooling and the deionization of electric arc, promotes the extinguishing of electric arc.
Stationary contact 30, the two ends outer surface of moving contacting plate 22 are equipped with the quiet top extrados of contact chip 5 of two panels
On be equipped with movable contact 29；The dynamic contact point 29 on same vertical direction, moves contact point 29 and stationary contact 30 with stationary contact 30
It is located at the upper surface geometric center position of moving contacting plate 22 and quiet contact chip 5 respectively, the dynamic contact point 29 is in stationary contact 30
To ensure that moving contacting plate 22 and quiet contact chip 5 can fit comprehensively on same vertical direction, increase the contact of two contact chips to greatest extent
Area.
The contact monomer assembly is that three normally opened contact monomers 1 are constituted, and at this moment pushing mechanism iron core 17 is located at centre
The normally opened contact position directly below of monomer 1, with the stressing conditions of two normally open contactor monomers 1 before and after equilibrium.
Fine motion piece switch 7 is provided with magnet, and fine motion piece switch 7 connects magnetic blow-out system 23, is connected when circuit and produces magnetic field, micro-
Moving plate switch 7 also can concomitant rotation, i.e. master worker can know whether circuit is connected from the outside.
Workflow and principle：
The utility model base 2 is installed on Transit Equipment, then some direct current transmission line two ends are connect respectively
Enter on two quiet contact chips 5, to the through a DC stream on bobbin 12, make the coil generating electromagnetic on bobbin 12, so that
Attract iron core 17, iron core 17 pull above pushing plate 18 downwards do pulling motion, then pushing plate 18 drive interlock frame 31 to
Lower motion, interlock frame 31 move downward, by the moving contacting plate 22 being provided at its inner portion on the contact spring 24 and spring on top to
Lower motion, makes it be fitted on quiet contact chip 5, and contact spring 24 alleviates moving contacting plate 22 and down moves to the quiet contact chip of contact
Collision on 5, so as to connect DC circuit circuit, when needing to close DC line, the electric current led on bobbin 12 is broken
Open, the electromagnetic field on bobbin 12 disappears, and in the presence of return spring 20, moving contacting plate 22 resets quickly, moving contacting plate 22
Disconnect, disconnected so that connecing with the DC line on quiet contact chip 5 with quiet contact chip 5, play and utilize the high straightening of Small current control
The effect of stream, facilitates safer, when quiet contact chip 5 contacts or disconnected generation temperature at contact point at that moment with moving contacting plate 22
Up to 2,000 ° or so of electric arc, influences on contactor and destroys larger, magnetic blow-out system 23 of the present utility model uses the power on moment
Magnetic field can be produced, and electric arc is under the influence of a magnetic field, the principle that can be elongated rapidly, magnetic field be produced in the moment that is powered and by electric arc
It is blown into arc-extinguish chamber 4, electric arc, which elongates generation arc drop value, also accordingly to be increased, during arc drop >=supply voltage, makes loop electricity
Stream is zero, reaches the effect of arc extinction, substantially reduces destruction of the electric arc to part in contactor, improves the use longevity of contactor
Life.
Arc quenching principle：
Mutually latched with two identical arc extinguishing over body cases 28, form arc-chutes, and be provided with arc-chutes：2 quiet
Arc striking piece 21 and 1 dynamic arc striking piece 25 and metal material is, working is：When product is under action of high voltage, product it is dynamic,
When stationary contact is opened and disconnected, air breakdown can be made, electric arc is produced, because arc quenching system is set at the dynamic and static contact position of product
Meter, according to left hand rule principle, carries out magnetic quenching, its magnetic blow-out mode is band when electric current is moved in magnetic field to product contact
Point ion elongates electric arc, the effect of elongation has two by Lorentz force action direction, electric arc under magnetic blow-out effect：1. electricity is made
Arc is elongated into the cut-out chamber in arc-extinguish chamber, is made electric arc segmentation disconnection, is cooled down arc extinguishing；2. another effect is by the electric arc drawing of burning
It is long, increase arc drop, electric arc often elongates the arc drop value about 25V of 1 inch of generation, public according to arc through voltage
Formula:IR=U (supply voltage)-ε (arc drop total value), according to formula, when arc drop total value exceedes supply voltage value, IR
It is worth for negative value, illustrates that the electric current breakdown value in loop is zero, i.e. loop breakdown, loop current flow direction：(the production of the quiet contact chip 5 of product
Product positive source) → quiet 21 → air arc of arc striking piece (particle) → dynamic 25 → air arc of arc striking piece (particle) → quiet arc striking piece
The quiet contact chip of 21 → product (product power cathode) → load → power supply is born, and forms loop.Current value in loop is zero, is not had
Electric current flows through, and will not produce electric arc, reaches the effect of arc extinguishing.This process is more than ten milliseconds of time.And then reach arc extinguishing
Effect.So as to protect product contact to be damaged, contactor physical life is improved.
Claims (9)
1. a kind of high-voltage DC contactor, including base (2), shell (3), assembling housing (6), pushing mechanism assembly and contact are single
Body assembly, it is characterised in that：The pushing mechanism assembly is installed on the base (2) top centre position, the shell (3)
It is respectively and fixedly installed to contact on the both sides of monomer assembly bottom for two pieces and two pieces shell (3) top, shell (3) bottom is affixed
With on base (2), the contact monomer assembly located at pushing mechanism assembly top and contact monomer assembly by several with every
The normally opened contact monomer (1) that plate (8) is separated is constituted side by side, and dividing plate (8) bottom is weldingly fixed on shell (3)；The assembling
Housing (6) is two pieces and two pieces assembling housing (6) clamps shell (3) rear and front end.
2. a kind of high-voltage DC contactor according to claim 1, it is characterised in that：The pushing mechanism assembly is by coil
Cylinder (11), bobbin (12), support (13), adjusting washer (disk) (14), electromagnet (15), sleeve (16), iron core (17) and pushing plate
(18) constitute, wherein coil tube (11) is in support (13) and coil tube (11) bottom is fixed in base (2) top interposition
Put, the bobbin (12) is hollow I-shaped wheel construction and bobbin (12) is placed in coil tube (11), the adjusting washer (disk)
(14), electromagnet (15) and sleeve (16) three overlay in bobbin (12) successively from top to bottom, the socket of sleeve (16) top
Cored (17), iron core (17) top is fixedly connected pushing plate (18) center.
3. a kind of high-voltage DC contactor according to claim 1, it is characterised in that：It is described it is normally opened contact monomer (1) by
Arc-extinguish chamber (4), quiet contact chip (5), return spring (20), moving contacting plate (22), magnetic blow-out system (23), gearing frame (31) and contact
Spring (24) is constituted, and the quiet contact chip (5) is two panels and its top is arcuate structure, is fixed in the middle part of quiet contact chip (5) outer
Shell (3) top and quiet contact chip (5) top intrados are provided with the magnetic blow-out system (23) being arranged in dividing plate (8), the magnetic blow-out system
(23) two ends both pass through dividing plate (8) and are connected with fine motion piece switch (7)；Arc-extinguish chamber (4) bottom is arranged on the top of shell (3)
And quiet contact chip (5) is inserted out from arc-extinguish chamber (4) bottom, contact spring (24) top is fixed in the gearing frame (31)
Portion top, contact spring (24) bottom connection moving contacting plate (22) interlocks frame (31) bottom and is provided with translot, the interior inserting of the translot is pushed away
It is provided with the middle part of dynamic plate (18) and gearing frame in strip translot, the strip translot and is horizontally through the positioning that a two ends are fixed on dividing plate
Plate (32), return spring (20) bottom is fixedly mounted on location-plate (32).
4. a kind of high-voltage DC contactor according to claim 3, it is characterised in that：The arc-extinguish chamber (4) is gone out by two valves
Arc over body case (28) is constituted, and inverted U is equipped with per valve arc extinguishing over body case (28) inner tip and moves arc striking piece (25), arc striking piece is moved
(25) both sides are equipped with some insulation flash barriers (26), and insulation flash barrier (26) bottom is provided with quiet arc striking piece (21)；The arc extinguishing
Over body case (28) is provided with bolt hole (27), and two valve arc extinguishing over body cases (28) are linked together by bolt.
5. a kind of high-voltage DC contactor according to claim 3, it is characterised in that：The axis of the return spring (20)
With the axis of contact spring (24) on the same line.
6. a kind of high-voltage DC contactor according to claim 2, it is characterised in that：The coil tube (11) and base
(2) it is connected between, between shell (3) and base (2), between quiet contact chip (5) and shell (3) with being welded and fixed；Two pieces group
Shell (3) is clamped by Lengthened bolt between dress housing (6).
7. a kind of high-voltage DC contactor according to claim 4, it is characterised in that：The insulation flash barrier (26) is saw
Tooth sector structure and arc extinguishing over body case (28) inwall is evenly arranged in enclosed to moving contacting plate (22).
8. a kind of high-voltage DC contactor according to claim 3, it is characterised in that：The quiet contact chip of two panels (5) top
It is equipped with the extrados of end on stationary contact (30), moving contacting plate (22) the two ends outer surface and is equipped with movable contact (29)；This is moved
Contact point (29) is with stationary contact (30) on same vertical direction.
9. a kind of high-voltage DC contactor according to claim 1, it is characterised in that：The contact monomer assembly is three
Normally opened contact monomer (1) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025833.4U CN206340492U (en) | 2016-08-31 | 2016-08-31 | A kind of high-voltage DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025833.4U CN206340492U (en) | 2016-08-31 | 2016-08-31 | A kind of high-voltage DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206340492U true CN206340492U (en) | 2017-07-18 |
Family
ID=59300271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621025833.4U Expired - Fee Related CN206340492U (en) | 2016-08-31 | 2016-08-31 | A kind of high-voltage DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206340492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233084A (en) * | 2019-06-28 | 2019-09-13 | 武汉长海电气科技开发有限公司 | D.C. contactor is pressed in one kind |
-
2016
- 2016-08-31 CN CN201621025833.4U patent/CN206340492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233084A (en) * | 2019-06-28 | 2019-09-13 | 武汉长海电气科技开发有限公司 | D.C. contactor is pressed in one kind |
| CN110233084B (en) * | 2019-06-28 | 2024-04-30 | 武汉长海电气科技开发有限公司 | Medium-voltage direct-current contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180322 Address after: 563002 Guizhou city of Zunyi province Huichuan District Sui Yang Road, No. 33 Patentee after: GUIZHOU TIANYI TECHNOLOGY Co.,Ltd. Address before: 563000 Guizhou city of Zunyi province Huichuan District Sui Yang Road, No. 33 Patentee before: GUIZHOU TIANYI ELECTRICAL Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170718 Termination date: 20210831 |