CN203398058U - Arc board capable of reinforcing intensity of self-excitation field - Google Patents
Arc board capable of reinforcing intensity of self-excitation field Download PDFInfo
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- CN203398058U CN203398058U CN201320541052.0U CN201320541052U CN203398058U CN 203398058 U CN203398058 U CN 203398058U CN 201320541052 U CN201320541052 U CN 201320541052U CN 203398058 U CN203398058 U CN 203398058U
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- arc
- striking
- supporting bracket
- striking piece
- described arc
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Abstract
The utility model discloses an arc board capable of reinforcing intensity of a self-excitation field. The arc board includes an arc sheet, which is arranged below a dynamic contact in an oblique manner, wherein the lower end of the arc sheet is connected with the lower end of an arc extinguishing chamber, and the upper end of the arc sheet is arranged close to the dynamic contact; and a arc supporting board, wherein the upper end of the arc supporting board is connected with the upper end of the arc sheet, and the lower end of the arc supporting board is contacted with the lower end of a double metal sheet. The contacting and connecting part of the arc sheet and the arc supporting board is provided with a transition section which is in an almost horizontal direction, and which separates the top end of the arc sheet and the top end of the arc supporting board in the horizontal direction. The arc board is advantageous in that: a transition section is arranged at the connecting part of the upper end of the arc sheet and the upper end of the arc supporting board, and the top end of the arc support board and the top end of the arc sheet are separated for a certain distance, so that the phenomenon that an arc stops under the dynamic contact caused by the weakness of the self-excitation field at the top part of the arc sheet is overcome, arc extinguishing effect is enhanced, and switching performance of a switch is improved.
Description
Technical field
The utility model relates to circuit breaker arc striking technical field, particularly relates to a kind of run-on tab of strengthening self-excitation field intensity.
Background technology
Dynamic/static contact in circuit breaker is because the faults such as circuit is short-circuited are when separated, between dynamic/static contact, can produce electric arc, this electric arc has delayed the opening time of switch, has reduced the break performance of switch, even can cause load and the serious scaling loss of circuit breaker components in circuit.
Produce electric arc when making dynamic/static contact separated rapidly, be introduced in grating arc-extinguishing chamber and extinguish smoothly, traditional way is that the run-on tab of some On currents is set in the chamber at dynamic/static contact place, run-on tab after energising around can produce self-excitation magnetic field, and electric arc enters and in arc extinguishing grid pieces, carries out arc extinguishing under the guiding in this self-excitation magnetic field.But due to the difference of concrete structure and the arrangement of run-on tab, the striking effect difference reaching 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 comprised of run-on tab and striking support, and make run-on tab and striking support split setting, the elongated end of the elongated end of run-on tab and striking support becomes to contact shape, and make run-on tab elongated end and striking support elongated end contact top near the lower surface of moving contact.This circuit breaker by by run-on tab elongated end and striking support elongated end contact top 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 is passed to the lower end of striking support from bimetal leaf, then along the conducting that makes progress of striking support, when current lead-through is to the contact point of run-on tab and striking support time, one part of current tiltedly moves downward conducting to arc extinguishing grid pieces below along run-on tab, and another part electric current moves towards the direction of moving contact along the elongated end of run-on tab.Run-on tab and striking support are after On current, and it can produce respectively self-excitation magnetic field around, and after two self-excitation magnetic fields superpose mutually, pilot arc is to arc extinguishing indoor sport.
But because the run-on tab of this utility model and striking support are over against setting, both are roughly contrary at the sense of current of contact jaw, and distance is very near, thereby cause the self-excitation magnetic field of run-on tab top substantially to be cancelled out each other.This just make above both contact positions for pilot arc to the self-excitation magnetic field of arc control device motions excessively a little less than, so, electric arc can produce stagnation behavior below moving contact, and then cause electric arc to slow down to the speed of arc control device motion, will be extended the opening time of switch, reduced the break performance of switch.In addition, because the upper end of the run-on tab of this patent document is also provided with the elongated end extending to moving contact place, the sense of current in this elongated end deviates from arc control device, the direction in the self-excitation magnetic field of its generation is also that pilot arc is towards the opposite direction motion of arc control device, so, not only this extension do not play the effect that promotes striking, hindered on the contrary electric arc and moved to arc control device, further reduce striking effect, caused the disconnection poor-performing of switch.
Utility model content
For this reason, the technical problems to be solved in the utility model is to provide a kind ofly can strengthen moving contact below self-excitation field intensity, promotes electric arc to the run-on tab of arc control device rapid movement.
For achieving the above object, the utility model is by the following technical solutions:
A run-on tab of strengthening self-excitation field intensity, comprises arc striking piece, the oblique moving contact below that is arranged on of described arc striking piece, 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 near described moving contact setting; 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 in contact of the lower end of described striking supporting bracket and bimetal leaf; The changeover portion that junction has general horizontal direction that contacts of described arc striking piece and described striking supporting bracket, described changeover portion separates the top of the top of described arc striking piece and described striking supporting bracket in the horizontal direction.
Described changeover portion is for being arranged on described arc striking piece upper end, and along continuous straight runs is to the arc striking piece connecting portion extending away from a side of described arc control device.
Described changeover portion is the upper end that is arranged on described striking supporting bracket, and along continuous straight runs is to the striking supporting bracket connecting portion extending near a side of described arc control device.
Described arc striking piece upper end edge horizontal direction extends to form arc striking piece connecting portion to the side away from described arc control device, 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 with described arc striking piece connecting portion to coordinate and forms described changeover portion.
Described striking supporting bracket comprises the riser relative and in a certain angle with the Ban Mian interval of described arc striking piece, and the connecting plate that described striking supporting bracket connecting portion is connected with described riser, described connecting plate is connected in the side of described riser, and plate face is substantially vertical with described riser plate face.
Described riser is rectangular slab face, and described riser is connected with the lower end in contact of described bimetal leaf by the extension of its below.
Between described arc striking piece and described striking supporting bracket by riveting or being welded to connect; Or described arc striking piece and described striking supporting bracket are integral type structure.
Described arc striking piece is provided with in a side that approaches described arc control device the kink that at least one points to described arc control device, forms " U " shape opening between described kink and the upper surface of described arc striking piece, and the direction of described opening is pointed to arc control device.
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
The beneficial effects of the utility model:
1. run-on tab of the present utility model is because the junction of the upper end at striking supporting bracket and arc striking piece is provided with the changeover portion of general horizontal direction, this changeover portion is by the spaced apart certain distance in the top of striking supporting bracket and arc striking piece, after On current, the upper surface of the self-excitation magnetic field that striking supporting bracket and arc striking piece produce in arc striking piece upper end superposes and offsets after part, still has enough intensity and promotes the electric arc of moving contact top to arc extinguishing indoor sport.So just eliminate existing run-on tab due to striking supporting bracket and the phenomenon that arc striking piece top overlaps and causes electric arc to be stagnated below moving contact, strengthened arc quenching effect, improved the break performance of switch.
2. striking supporting bracket of the present utility model comprises the riser relative and in a certain angle with the Ban Mian interval of arc striking piece, and the connecting plate that arc striking piece connecting portion is connected with riser, connecting plate is connected in the side of riser, and plate face is substantially vertical with riser plate face.This structural design can be in limited electric arc runway space, make as much as possible arc striking piece there is suitable interval with the junction that contacts of striking supporting bracket, to reduce both in the counteracting amount in the self-excitation magnetic field of arc striking piece upper end as far as possible, and then increase to greatest extent the striking magnetic field intensity at this place, guarantee that electric arc is rapidly to arc extinguishing indoor sport.
3. the utility model is at least provided with in a side of arc striking piece the kink that bends towards arc control device, forms " U " shape opening between this kink and the upper surface of arc striking piece, and the direction of this opening is pointed to arc control device.The utility model arranges the kink that points to arc control device by the side at 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, the self-excitation field direction of its generation is also consistent, magnetic field intensity after approaching the stack of arc control device side is further strengthened so, accelerate pilot arc to arc extinguishing indoor sport, shortened the time of staying of electric arc in runway, improved arc quenching effect.
Accompanying drawing explanation
For the content of utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is that run-on tab of the present utility model is connected the structural representation coordinating 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.
Embodiment
Embodiment mono-
Fig. 1 is the disclosed a kind of run-on tab of strengthening self-excitation field intensity of the utility model, comprise arc striking piece 2, oblique moving contact 1 below that is arranged on of described arc striking piece 2, 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 arranges 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 in contact of the lower end of described striking supporting bracket 3 and bimetal leaf; The junction that contacts of described arc striking piece 2 and described striking supporting bracket 3, has the changeover portion of general horizontal direction.Said horizontal direction is not absolute level herein, changeover portion herein just plays the effect that connects 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 utility model.
The structure of described changeover portion is not unique, described changeover portion can be for being arranged on described arc striking piece 2 upper ends, along continuous straight runs is to the arc striking piece connecting portion 21 extending away from a side of described arc extinguishing grid pieces 1, and described changeover portion is spaced apart in the horizontal direction by 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, and along continuous straight runs is to the striking supporting bracket connecting portion 34 extending near a side of described arc extinguishing grid pieces 1.And as preferred, in the present embodiment, for the ease of described striking supporting bracket 3, directly contact cooperation with described arc striking piece 2, described arc striking piece 2 upper end edge horizontal directions extend to form arc striking piece connecting portion 21 to the side away from described arc control device, 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 with described arc striking piece connecting portion 21 to coordinate and forms described changeover portion.Described striking supporting bracket connecting portion 34 is riveted or is welded to connect with described arc striking piece connecting portion 21, 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 improve the striking magnetic field intensity of described run-on tab 2 upper end faces.
In the present embodiment, it is relative with the Ban Mian interval of described arc striking piece 2 that described striking supporting bracket 3 comprises, 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 by the extension 33 of its below, electric current conducts to from described bimetal leaf the arc striking piece 2 of then flowing through striking supporting bracket 3, described arc striking piece 2 and described striking supporting bracket 3 produce respectively the magnetic field of encouraging oneself because of On current, the self-excitation magnetic field that both produce after vector superposed above run-on tab, forms striking magnetic field.Described striking supporting bracket 3 also comprises the connecting plate 32 that described striking supporting bracket connecting portion 34 is connected with described riser 31, described connecting plate 32 is connected in the side of described riser 31, and plate face is substantially vertical with described riser 31 plate faces, described striking supporting bracket connecting portion 34 is arranged on described connecting plate 32 upper end, and makes described striking supporting bracket connecting portion 34 and described arc striking piece connecting portion 21 vertical connection in the horizontal direction.
Due between the described arc striking piece 2 in the present embodiment and described striking supporting bracket 3, by striking supporting bracket connecting portion 34, keep at a certain distance away and be connected with arc striking piece connecting portion 21.So, described arc striking piece 2 superposes in described arc striking piece 2 positions, upper surface with the self-excitation magnetic field that described striking supporting bracket 3 produces, and cancels out each other after sub-fraction, still has enough magnetic field intensitys and promotes electric arc to arc extinguishing indoor sport.In addition, the top of the described arc striking piece 2 of upper riser 31 distance of striking supporting bracket 3 of the present utility model is the certain distance in interval also, this structural design is conducive to the amount of cancelling out each other by reducing magnetic field, further strengthens the magnetic field intensity of described arc striking piece 2 upper surfaces.
Between described arc striking piece connecting portion 21 in the present embodiment and 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 bis-
Referring to Fig. 1, on the basis of above-described embodiment one, described arc striking piece 2 is provided with the kink 22 that points to arc control device in a side that approaches described arc control device, form " U " shape opening between described kink 22 and the upper surface of described arc striking piece 2, and the direction of described opening is pointed to arc control device.In order further to strengthen the intensity in striking magnetic field, also can two or more described kinks 22 be set in the both sides of the upper surface of described arc striking piece 2, certainly, when being set, to determine in conjunction with concrete circuit breaker inner space size and mounting process described kink 22, proof, is provided with a described kink 22 and can meets the requirement of quick striking by experiment.
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 can be also integral type structure with detachable connection of described arc striking piece 2.
Above-mentioned embodiment is just explained in detail the technical solution of the utility model; the utility model has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; the above-mentioned principle of every foundation and the improvement of spirit on the utility model basis, substitute, all should be within protection range of the present utility model.
Claims (10)
1. a run-on tab of strengthening self-excitation field intensity, comprises
Arc striking piece (2), oblique moving contact (1) below that is arranged on of described arc striking piece (2), 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) arranges 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;
It is characterized in that: the changeover portion that junction has general horizontal direction that contacts of described arc striking piece (2) and described striking supporting bracket (3), described changeover portion separates the top of the top of described arc striking piece (2) and described striking supporting bracket (3) in the horizontal direction.
2. a kind of run-on tab of strengthening self-excitation field intensity according to claim 1, is characterized in that: described changeover portion is for being arranged on described arc striking piece (2) upper end, and along continuous straight runs is to the arc striking piece connecting portion (21) extending away from a side of described arc control device.
3. a kind of run-on tab of strengthening self-excitation field intensity according to claim 1, it is characterized in that: described changeover portion is for being arranged on the upper end of described striking supporting bracket (3), and along continuous straight runs is to the striking supporting bracket connecting portion (34) extending near a side of described arc control device.
4. a kind of run-on tab of strengthening self-excitation field intensity according to claim 1, it is characterized in that: described arc striking piece (2) upper end edge horizontal direction extends to form arc striking piece connecting portion (21) to the side away from described arc control device, 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 with described arc striking piece connecting portion (21) to coordinate and forms described changeover portion.
5. according to a kind of run-on tab of strengthening self-excitation field intensity described in claim 3 or 4, it is characterized in that: described striking supporting bracket (3) comprises the riser (31) relative and in a certain angle with the Ban Mian interval of described arc striking piece (2), and the connecting plate (32) that described striking supporting bracket connecting portion (34) is connected with described riser (31), described connecting plate (32) is connected in the side of described riser (31), and plate face is substantially vertical with described riser (31) plate face.
6. a kind of run-on tab of strengthening self-excitation field intensity according to claim 5, is characterized in that: described riser (31) is rectangular slab face, and described riser (31) is connected with the lower end in contact of described bimetal leaf by the extension (33) of its below.
7. a kind of run-on tab of strengthening self-excitation field intensity according to claim 6, is characterized in that: between described arc striking piece (2) and described striking supporting bracket (3) by riveting or being welded to connect; Or described arc striking piece (2) is integral type structure with described striking supporting bracket (3).
8. a kind of run-on tab of strengthening self-excitation field intensity according to claim 7, it is characterized in that: described arc striking piece (2) is provided with at least one kink that points to described arc control device (22) in a side that approaches described arc control device, between the upper surface of described kink (22) and described arc striking piece (2), form " U " shape opening, the direction of described opening is pointed to arc control device.
9. a kind of run-on tab of strengthening self-excitation field intensity according to claim 8, 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).
10. a kind of run-on tab of strengthening self-excitation field intensity according to claim 9, is characterized in that: described kink (22) and detachable connection of described arc striking piece (2); Or described kink (22) is integral type structure with described arc striking piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320541052.0U CN203398058U (en) | 2013-09-02 | 2013-09-02 | Arc board capable of reinforcing intensity of self-excitation field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320541052.0U CN203398058U (en) | 2013-09-02 | 2013-09-02 | Arc board capable of reinforcing intensity of self-excitation field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398058U true CN203398058U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320541052.0U Withdrawn - After Issue CN203398058U (en) | 2013-09-02 | 2013-09-02 | Arc board capable of reinforcing intensity of self-excitation field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203398058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500691B (en) * | 2013-09-02 | 2015-07-22 | 浙江大华电气有限公司 | Run-on plate for strengthening self-excitation magnetic field intensity |
-
2013
- 2013-09-02 CN CN201320541052.0U patent/CN203398058U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500691B (en) * | 2013-09-02 | 2015-07-22 | 浙江大华电气有限公司 | Run-on plate for strengthening self-excitation magnetic field intensity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG DAHUA ELECTRIC CO., LTD. Free format text: FORMER NAME: ZHEJIANG DAHUA SWITCH FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 325604 No. 86 long march road, Liushi Town, Zhejiang, Yueqing Patentee after: Zhejiang Dahua Electric Co., Ltd. Address before: 325600, No. 9, Temple Road, Xinguang industrial district, Liushi Town, Zhejiang, Yueqing Patentee before: Zhejiang Dahua Switchgear Factory |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150722 |
|
| RGAV | Abandon patent right to avoid regrant |