CN103426669B - Run-on plate - Google Patents
Run-on plate Download PDFInfo
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- CN103426669B CN103426669B CN201310391789.3A CN201310391789A CN103426669B CN 103426669 B CN103426669 B CN 103426669B CN 201310391789 A CN201310391789 A CN 201310391789A CN 103426669 B CN103426669 B CN 103426669B
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- Prior art keywords
- striking
- arc striking
- arc
- supporting bracket
- striking piece
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- 238000005452 bending Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract 3
- 238000010891 electric arc Methods 0.000 description 15
- 230000003068 static effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention discloses a run-on plate which comprises an arc striking sheet, wherein the arc striking sheet is arranged below a moving contact obliquely. The lower end of the arc striking sheet is connected with the lower end of an arc extinguish chamber, and the upper end of the arc striking sheet is arranged close to the moving contact. The upper end of an arc striking supporting plate is connected with the upper end of the arc striking sheet, and the lower end of the arc striking supporting plate makes contact with the lower end of a bimetallic strip. A roughly horizontal transition section is arranged on the connection portion of the arc striking sheet and the arc striking supporting plate, and the transition section separates the top end of the arc striking sheet and the top end of the arc striking supporting plate in the horizontal direction. According to the run-on plate, due to the fact that the transition section is arranged on the connection portion of the arc striking sheet and the upper end of the arc striking supporting plate, the arc striking supporting plate and the top end of the arc striking sheet can be separated with a certain distance; the intensity of a self-excitation magnetic field above the arc striking plate can be enhanced, the arc extinguishing effect is further enhanced, and the on-off performance of a switch is improved; by enabling the middle portion of the arc striking plate to be bent to one side where a wiring board locates and to make contact with the wiring board, conductive connecting components can be saved, and assembling efficiency can be improved.
Description
Technical field
The present invention relates to circuit breaker arc striking technical field, particularly relate to a kind of run-on tab.
Background technology
When the dynamic/static contact in circuit breaker is separated because of faults such as circuit are short-circuited, electric arc can be produced between dynamic/static contact, this electric arc has delayed the opening time of switch, reduces the break performance of switch, even can cause the load in circuit and the serious scaling loss of circuit breaker components.
When being separated to make dynamic/static contact, generation electric arc is introduced in grating arc-extinguishing chamber rapidly, smoothly and extinguishes, traditional way is the run-on tab arranging some On currents in the chamber at dynamic/static contact place, can produce self-excitation magnetic field around run-on tab after energising, electric arc enters in arc extinguishing grid pieces and carries out arc extinguishing under the guiding in this self-excitation magnetic field.But due to the concrete structure of run-on tab and the difference of arrangement, the striking effect difference reached is very large.
As Chinese patent document CN201918328U discloses a kind of arc-striking structure of miniature circuit breaker, it comprises arc control device, moving contact, fixed contact, arc striking piece, described arc striking piece is made up of run-on tab and striking support, and run-on tab and the split of striking support are arranged, the elongated end of run-on tab becomes to contact shape with the elongated end of striking support, and makes the contact top of run-on tab elongated end and striking support elongated end near the lower surface of moving contact.This circuit breaker by by the contact top of run-on tab elongated end and striking support elongated end near the lower surface of moving contact, reduce distance between the two, and then reinforcement striking effect.But, in actual applications, because striking electric current to be passed to the lower end of striking support from bimetal leaf, then along the upwards conducting of striking support, when current lead-through to the contact point of run-on tab and striking support time, one part of current is below run-on tab obliquely motion conducting to arc extinguishing grid pieces, and another part electric current then moves along the elongated end of run-on tab towards the direction of moving contact.Run-on tab and striking support, after On current, can produce self-excitation magnetic field respectively around it, two self-excitation magnetic fields superpose rear pilot arc mutually to arc extinguishing indoor sport.
But because the run-on tab of this utility model and striking support are just to setting, both are roughly contrary at the sense of current of contact jaw, and distance is very near, thus cause the self-excitation magnetic field above run-on tab substantially to be cancelled out each other.This just makes the self-excitation magnetic field of moving to arc control device for pilot arc above both contact positions excessively weak, so, electric arc can produce stagnation behavior in the below of moving contact, and then the speed causing electric arc to move to arc control device slows down, the opening time of switch will be extended, and reduces the break performance of switch.In addition, upper end due to the run-on tab of this patent document is also provided with the elongated end extended to moving contact place, the sense of current in this elongated end deviates from arc control device, the direction in its self-excitation magnetic field produced also is that pilot arc moves towards the opposite direction of arc control device, so, not only this extension does not play and promotes the effect of striking, hinders electric arc on the contrary and moves to arc control device, reduce further striking effect, cause the disconnection poor-performing of switch.In addition, because the striking Bracket setting of this patent document is between bimetal leaf and arc striking piece, and the terminal block that the lower end of bimetal leaf will be held by conducting connecting part and output (or input) is connected, and this design makes circuit breaker internal parts more, assembling difficulty is large, and production efficiency is low.
Summary of the invention
For this reason, the technical problem to be solved in the present invention is to provide one can strengthen self-excitation field intensity below moving contact, promotes that electric arc is to the run-on tab of arc control device rapid movement.
The interlock circuit link that another object of the present invention is to provide on a kind of run-on tab is less, is convenient to the circuit breaker that assembling is safeguarded, production efficiency is high.
For achieving the above object, the present invention is by the following technical solutions:
A kind of run-on tab, comprise arc striking piece, described arc striking piece is oblique to be arranged on below moving contact, and the lower end of described arc striking piece is connected with the lower end of arc control device, and the upper end of described arc striking piece is arranged near described moving contact; Striking supporting bracket, the upper end of described striking supporting bracket is connected with the upper end of described arc striking piece, the lower end of described striking supporting bracket and the lower end in contact of bimetal leaf; The contact junction of described arc striking piece and described striking supporting bracket has the changeover portion of general horizontal direction, and the top of the top of described arc striking piece and described striking supporting bracket separates by described changeover portion in the horizontal direction; The middle part of described striking supporting bracket is to a lateral buckling at terminal block place, and described striking supporting bracket bending place contacts with described terminal block and connects.
Described arc striking piece upper end forms the vertical arc striking piece connecting portion arranged, the upper end edge horizontal direction of described striking supporting bracket extends to form striking supporting bracket connecting portion to the side near described arc control device, and described striking supporting bracket connecting portion contacts to coordinate with described arc striking piece connecting portion and forms described changeover portion.
The riser that described striking supporting bracket comprises and the interval, plate face of described arc striking piece is relative and in a certain angle, and described arc striking piece connecting portion and described riser are carried out the connecting plate that is connected, described connecting plate is connected to the side of described riser, and plate face is substantially vertical with described riser plate face; Described striking supporting bracket connecting portion is substantially vertical with the plate face of described connecting plate, and the root of described striking supporting bracket connecting portion and state arc striking piece interval and arrange.
Described riser is the kink of described striking supporting bracket to described terminal block side, and described riser contacts with described terminal block and connects.
Described riser is rectangular slab face, and described bimetal leaf is arranged between described riser, described connecting plate, described arc striking piece, and described riser is connected with the lower end in contact of described bimetal leaf by the extension below it.
By riveting or being welded to connect between described arc striking piece and described striking supporting bracket; Or described arc striking piece and described striking supporting bracket are integral type structure.
Described arc striking piece is provided with in the side close to described arc control device the kink that at least one points to described arc control device, forms " U " shape opening between the upper surface of described kink and described arc striking piece, and arc control device are pointed in the direction of described opening.
Described kink is laminated structure, and the plate face of described kink is vertical with the plate face of described arc striking piece.
Described kink is connected with described arc striking piece is detachable; Or described kink and described arc striking piece are integral type structure
Beneficial effect of the present invention:
1. run-on tab of the present invention is provided with the changeover portion of general horizontal direction due to the junction of the upper end in striking supporting bracket and arc striking piece, this changeover portion is by the spaced apart certain distance in top of striking supporting bracket and arc striking piece, after On current, the self-excitation magnetic field that striking supporting bracket and arc striking piece produce, after the upper surface of arc striking piece upper end superposes and offsets part, still has enough intensity to promote that electric arc above moving contact is to arc extinguishing indoor sport.So just eliminate existing run-on tab to overlap with arc striking piece top the phenomenon causing electric arc to be stagnated below moving contact due to striking supporting bracket, strengthen arc quenching effect, improve the break performance of switch.In addition, because the middle part of striking supporting bracket is to the lateral buckling at terminal block place, and its bending place contacts with terminal block and connects, the direct conducting of striking supporting bracket can be passed through to terminal block to load supplying from input current bimetal leaf, so just can save and traditional the associate conductive parts such as conducting connecting part are set between bimetal leaf and terminal block, not only simplify the combination of parts, also improve efficiency of assembling simultaneously.
2. the riser that striking supporting bracket of the present invention comprises and the interval, plate face of arc striking piece is relative and in a certain angle, and arc striking piece connecting portion and riser are carried out the connecting plate that is connected, connecting plate is connected to the side of riser, and plate face is substantially vertical with riser plate face.This structural design can in limited electric arc runway space, the contact junction of arc striking piece and striking supporting bracket is made to have suitable interval as much as possible, counteracting amount in the self-excitation magnetic field of arc striking piece upper end both reducing to try one's best, and then increase the striking magnetic field intensity at this place to greatest extent, guarantee that electric arc is rapidly to arc extinguishing indoor sport.
3. the present invention is at least provided with the kink bending towards arc control device in the side of arc striking piece, forms " U " shape opening between this kink and upper surface of arc striking piece, and arc control device are pointed in the direction of this opening.The present invention points to the kink of arc control device by arranging in the side of arc striking piece, when circuit breaker produces electric arc, the sense of current of kink is consistent with the sense of current in arc striking piece, its self-excitation field direction produced is also consistent, so strengthening further close to the magnetic field intensity after the superposition of arc control device side, accelerate pilot arc to arc extinguishing indoor sport, shorten the time of staying of electric arc in runway, improve arc quenching effect.
Accompanying drawing explanation
In order to make the content of invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the assembling schematic diagram of run-on tab of the present invention at circuit breaker internal;
Fig. 2 is that run-on tab of the present invention is connected the structural representation coordinated with arc control device.
In figure, Reference numeral is expressed as:
1-moving contact; 2-arc striking piece; 21-arc striking piece connecting portion; 22-kink; 3-striking supporting bracket; 31-riser; 32-connecting plate; 33-extension; 34-striking supporting bracket connecting portion; 4-terminal block; 5-bimetal leaf.
Embodiment
Embodiment one
Be run-on tab disclosed by the invention see Fig. 1, comprise arc striking piece 2, described arc striking piece 2 is oblique to be arranged on below moving contact 1, and the described lower end of arc striking piece 2 is connected with the lower end of arc control device, and the upper end of described arc striking piece 2 is arranged near described moving contact 1; And striking supporting bracket 3, the upper end of described striking supporting bracket 3 is connected with the upper end of described arc striking piece 2, the lower end of described striking supporting bracket 3 and the lower end in contact of bimetal leaf 5; Described arc striking piece 2 and the contact junction of described striking supporting bracket 3, have the changeover portion of general horizontal direction.Said horizontal direction is not absolute level herein, changeover portion herein just plays the effect connecting described arc striking piece 2 and described striking supporting bracket 3, and make spaced apart between the two, so this changeover portion can be domes, also can be incline structure, can also be the structure of other shape, its concrete structure shape can't affect actual functional capability of the present invention.
The middle part of the supporting bracket of striking described in the present embodiment 3 is to a lateral buckling at terminal block 4 place, and described striking supporting bracket 3 bending place contacts with described terminal block 4 and connects.After dynamic/static contact is connected, from described bimetal leaf 5 one part of current of conducting through run-on tab to produce striking magnetic field, another part electric current is then directly by the contact point of the bending part in described striking supporting bracket 3 and described connecting plate 4, conduct to load circuit, to provide electric energy to load circuit.
The structure of described changeover portion is not unique, described changeover portion can for being arranged on described arc striking piece 2 upper end, in the horizontal direction to the arc striking piece connecting portion 21 that the side away from described arc extinguishing grid pieces 1 extends, described changeover portion is by spaced apart in the horizontal direction for the top of the top of described arc striking piece 2 and described striking supporting bracket 3.Certainly, described changeover portion also can be arranged on the upper end of described striking supporting bracket 3, in the horizontal direction to the striking supporting bracket connecting portion 34 extended near the side of described arc extinguishing grid pieces 1.And as preferred, in the present embodiment, directly cooperation is contacted with described arc striking piece 2 for the ease of described striking supporting bracket 3, described arc striking piece 2 upper end forms the vertical arc striking piece connecting portion 21 arranged, the upper end edge horizontal direction of described striking supporting bracket 3 extends to form striking supporting bracket connecting portion 34 to the side near described arc control device, and described striking supporting bracket connecting portion 34 contacts to coordinate with described arc striking piece connecting portion 21 and forms described changeover portion.Described striking supporting bracket connecting portion 34 is riveted with described arc striking piece connecting portion 21 or is welded to connect, it can certainly be other connected mode, and make described arc striking piece connecting portion 21 vertical with the bearing of trend of described striking supporting bracket connecting portion 34, be so more conducive to the striking magnetic field intensity improving described run-on tab 2 upper end face.
In the present embodiment, described striking supporting bracket 3 comprises relative with the interval, plate face of described arc striking piece 2, and riser 31 in a certain angle, described riser 31 is rectangular slab face, described riser 31 is connected with the lower end in contact of described bimetal leaf 5 by the extension 33 below it, electric current conducts to striking supporting bracket 3 from described bimetal leaf 5 and then flows through arc striking piece 2, described arc striking piece 2 produces because of On current magnetic field of encouraging oneself with described striking supporting bracket 3 respectively, after the self-excitation magnetic field that both produce is vector superposed above run-on tab, form striking magnetic field.Described striking supporting bracket 3 also comprises the connecting plate 32 described striking supporting bracket connecting portion 34 and described riser 31 being carried out being connected, described connecting plate 32 is connected to the side of described riser 31, and plate face is substantially vertical with described riser 31 plate face, described striking supporting bracket connecting portion 34 is arranged on the upper end of described connecting plate 32, and described striking supporting bracket connecting portion 34 is connected with described arc striking piece connecting portion 21 is vertical in the horizontal direction.The upper end of the described connecting plate 32 in the present embodiment is bent to form described striking supporting bracket connecting portion 34 to the side at described riser 31 place, and makes described striking supporting bracket connecting portion 34, described riser 31 all perpendicular to described connecting plate 32; And make the root of described striking supporting bracket connecting portion 34 and state arc striking piece 2 interval to arrange, to guarantee the superposition magnetic field described arc striking piece 2 with suitable intensity.
Because the described arc striking piece 2 in the present embodiment is connected with being kept at a certain distance away with arc striking piece connecting portion 21 by striking supporting bracket connecting portion 34 between described striking supporting bracket 3.So, the self-excitation magnetic field that described arc striking piece 2 and described striking supporting bracket 3 produce superposes in position, described arc striking piece 2 upper surface, and after sub-fraction of cancelling out each other, still has enough magnetic field intensitys and promote that electric arc is to arc extinguishing indoor sport.In addition, the upper riser 31 of striking supporting bracket 3 of the present invention is also spaced a distance apart from the top of described arc striking piece 2, and this structural design is conducive to the amount of cancelling out each other by reducing magnetic field, strengthens the magnetic field intensity of described arc striking piece 2 upper surface further.
In the present embodiment, described riser 31 is the kink of described striking supporting bracket 3 to described terminal block 4 side, and described riser 31 contacts with described terminal block 4 and connects; Described bimetal leaf 5 is arranged between described riser 31, described connecting plate 32, described arc striking piece 2.The present invention is by being arranged between described riser 31, described connecting plate 32, described arc striking piece 2 by described bimetal leaf 5, being convenient to described riser 31 on the one hand directly contacts as load circuit provides electric current with described terminal block 4, on the other hand, the confined space of described circuit breaker internal can be made full use of, the volume of described circuit breaker is suitable for.
Described arc striking piece connecting portion 21 in the present embodiment and between described striking supporting bracket connecting portion 34 by riveting or being welded to connect, certain described arc striking piece 2 also can be designed to integral structure with described striking supporting bracket 3.
Embodiment two
See Fig. 2, on the basis of above-described embodiment one, described arc striking piece 2 is provided with the kink 22 pointing to arc control device in the side close to described arc control device, form " U " shape opening between described kink 22 and the upper surface of described arc striking piece 2, and arc control device are pointed in the direction of described opening.In order to strengthen the intensity in striking magnetic field further, also two or more described kink 22 can be set in the both sides of the upper surface of described arc striking piece 2, certainly, to determine in conjunction with concrete circuit breaker internal space size and mounting process when arranging described kink 22, prove by experiment, be provided with the requirement that a described kink 22 can meet quick striking.
Described kink 22 in the present embodiment is laminated structure, and the plate face of described kink 22 is vertical with the plate face of described arc striking piece 2.Described kink 22 also can be integral type structure with described arc striking piece 2 detachable connection.
Above-mentioned embodiment is just explained in detail technical scheme of the present invention; the present invention has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; every improvement on basis of the present invention according to above-mentioned principle and spirit, substitute, all should within protection scope of the present invention.
Claims (9)
1. a run-on tab, comprises
Arc striking piece (2), described arc striking piece (2) is oblique is arranged on moving contact (1) below, and the lower end of described arc striking piece (2) is connected with the lower end of arc control device, and the upper end of described arc striking piece (2) is arranged near described moving contact (1);
Striking supporting bracket (3), the upper end of described striking supporting bracket (3) is connected with the upper end of described arc striking piece (2), the lower end of described striking supporting bracket (3) and the lower end in contact of bimetal leaf (5);
It is characterized in that: described arc striking piece (2) has the changeover portion of general horizontal direction with the contact junction of described striking supporting bracket (3), and the top of the top of described arc striking piece (2) and described striking supporting bracket (3) separates by described changeover portion in the horizontal direction; The middle part of described striking supporting bracket (3) is to a lateral buckling at terminal block (4) place, and described striking supporting bracket (3) bending place contacts with described terminal block (4) and connects.
2. a kind of run-on tab according to claim 1, it is characterized in that: described arc striking piece (2) upper end forms the vertical arc striking piece connecting portion (21) arranged, the upper end edge horizontal direction of described striking supporting bracket (3) extends to form striking supporting bracket connecting portion (34) to the side near described arc control device, and described striking supporting bracket connecting portion (34) contacts to coordinate with described arc striking piece connecting portion (21) and forms described changeover portion.
3. a kind of run-on tab according to claim 1 and 2, it is characterized in that: the riser (31) that described striking supporting bracket (3) comprises and the interval, plate face of described arc striking piece (2) is relative and in a certain angle, and described striking supporting bracket connecting portion (34) and described riser (31) are carried out the connecting plate (32) that is connected, described connecting plate (32) is connected to the side of described riser (31), and plate face is substantially vertical with described riser (31) plate face; Described striking supporting bracket connecting portion (34) is substantially vertical with the plate face of described connecting plate (32), and the root of described striking supporting bracket connecting portion (34) and state arc striking piece (2) interval and arrange.
4. a kind of run-on tab according to claim 3, is characterized in that: described riser (31) is for described striking supporting bracket (3) is to the kink of described terminal block (4) side, and described riser (31) contacts with described terminal block (4) and connects.
5. a kind of run-on tab according to claim 4, it is characterized in that: described riser (31) is rectangular slab face, described bimetal leaf (5) is arranged between described riser (31), described connecting plate (32), described arc striking piece (2), and described riser (31) is connected with the lower end in contact of described bimetal leaf (5) by the extension (33) below it.
6. a kind of run-on tab according to claim 1, is characterized in that: by riveting or being welded to connect between described arc striking piece (2) and described striking supporting bracket (3); Or described arc striking piece (2) is integral type structure with described striking supporting bracket (3).
7. a kind of run-on tab according to claim 1, it is characterized in that: described arc striking piece (2) is provided with at least one kink pointing to described arc control device (22) in the side close to described arc control device, form " U " shape opening between the upper surface of described kink (22) and described arc striking piece (2), arc control device are pointed in the direction of described opening.
8. a kind of run-on tab according to claim 7, is characterized in that: described kink (22) is laminated structure, and the plate face of described kink (22) is vertical with the plate face of described arc striking piece (2).
9. a kind of run-on tab according to claim 7 or 8, is characterized in that: described kink (22) is connected with described arc striking piece (2) is detachable; Or described kink (22) is integral type structure with described arc striking piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391789.3A CN103426669B (en) | 2013-09-02 | 2013-09-02 | Run-on plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391789.3A CN103426669B (en) | 2013-09-02 | 2013-09-02 | Run-on plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103426669A CN103426669A (en) | 2013-12-04 |
| CN103426669B true CN103426669B (en) | 2015-06-24 |
Family
ID=49651267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310391789.3A Expired - Fee Related CN103426669B (en) | 2013-09-02 | 2013-09-02 | Run-on plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103426669B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871796A (en) * | 2014-03-19 | 2014-06-18 | 云南追梦科技有限公司 | Magnetism enhancement and arc guide device of miniature circuit breaker and miniature circuit breaker provided with magnetism enhancement and arc guide device |
| CN106077893A (en) * | 2016-08-03 | 2016-11-09 | 安徽汇精模具研发科技有限公司 | A kind of high breaking striking integrated bracket |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7508649U (en) * | 1974-05-14 | 1975-08-28 | Kopp H | High performance circuit breaker |
| US4217472A (en) * | 1977-11-02 | 1980-08-12 | Gould Inc. | Compact circuit breaker having high interrupting capacity |
| CN1776872A (en) * | 2005-12-09 | 2006-05-24 | 上海电器科学研究所（集团）有限公司 | Arc-striking structure of low-voltage breaker contact system |
| CN201219073Y (en) * | 2008-07-02 | 2009-04-08 | 施耐德电器工业公司 | Arc-striking and arc-extinguishing structure of small-sized breaker |
| CN201918328U (en) * | 2011-01-10 | 2011-08-03 | 上海人民企业集团温州电器有限公司 | Arc striking structure of miniature circuit breaker |
| CN203397965U (en) * | 2013-09-02 | 2014-01-15 | 浙江大华开关厂 | Arc board |
-
2013
- 2013-09-02 CN CN201310391789.3A patent/CN103426669B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103426669A (en) | 2013-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG DAHUA SWITCH FACTORY Free format text: FORMER OWNER: HUAKUN ELECTRIC CO., LTD. Effective date: 20131118 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20131118 Address after: 325600, No. 9, Temple Road, Xinguang industrial district, Liushi Town, Zhejiang, Yueqing Applicant after: Zhejiang Dahua Switchgear Factory Address before: 325600, No. 9, Temple Road, Xinguang industrial district, Liushi Town, Yueqing, Zhejiang, Wenzhou Applicant before: Huakun Electric Co., Ltd. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 325604 No. 86 long march road, Liushi Town, Zhejiang, Yueqing Applicant after: Zhejiang Dahua Electric Co., Ltd. Address before: 325600, No. 9, Temple Road, Xinguang industrial district, Liushi Town, Zhejiang, Yueqing Applicant before: Zhejiang Dahua Switchgear Factory |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHEJIANG DAHUA SWITCH FACTORY TO: ZHEJIANG DAHUA ELECTRIC CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20190902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |