CN202150427U - Arc extinguishing device of breaker - Google Patents
Arc extinguishing device of breaker Download PDFInfo
- Publication number
- CN202150427U CN202150427U CN 201120270835 CN201120270835U CN202150427U CN 202150427 U CN202150427 U CN 202150427U CN 201120270835 CN201120270835 CN 201120270835 CN 201120270835 U CN201120270835 U CN 201120270835U CN 202150427 U CN202150427 U CN 202150427U
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- Prior art keywords
- arc
- sheet
- moving contact
- control device
- chute
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Abstract
The utility model discloses an arc extinguishing device of a breaker, comprising a static contact, a moving contact, an arc extinguishing chamber arranged between the static contact and the moving contact and an arc extinguishing grid arranged in the arc extinguishing chamber. The arc extinguishing device is characterized in that a static contact arc introducing sheet is fixed on the static contact, a moving contact arc introducing sheet is fixed on the moving contact, the static contact arc introducing sheet and the moving contact arc introducing sheet are respectively extended to two ends of the arc extinguishing grid, and grid sheets in the arc extinguishing grid are arranged in the shape of a ladder from the side of the static contact arc introducing sheet to the side of the moving contact arc introducing sheet in the order of from the long to the short. The arc extinguishing device overcomes the problems that in the prior art, long time is taken for the arc to enter into the arc extinguishing grid, arc introducing is not uniform, and arc can not be effectively and rapidly extinguished.
Description
Technical field
the utility model relates to a kind of arc-control device of circuit breaker.
Background technology
because the existence of electric arc in the circuit breaker breaking course postpones the circuit breaker break-time, the scaling loss contact, even can cause in severe case and catch fire and explode.For this reason, all be provided with arc-control device in the miniature circuit breaker usually, the electric arc life period is shortened as far as possible, alleviating harm, and improve the breaking capacity of circuit breaker.At present, what miniature circuit breaker was the most frequently used is the metal gate arc-control device, and the arc control device rear end of this arc-control device is provided with arc-chute, and arc-chute is arranged between two vulcanized fiber boards by the consistent stalloy of multi-disc length and constitutes, and stalloy is insulated from each other.Yet the shortcoming of this arc-control device is: 1, arc-chute produces a little apart from electric arc---dynamic and static contact is far away, can not fast and effectively electric arc be introduced arc-chute, and it is extinguished; 2, in fact in the circuit breaker electric arc often all be to produce from moving contact one side, be transferred to the first side of stationary contact then fast, be introduced in the arc-chute at last and eliminate, and when the inner grid sheet length of arc-chute is arranged unanimity, be unfavorable for that electric arc introduces rapidly and uniformly.
Summary of the invention
the utility model purpose is: a kind of arc-control device of circuit breaker is provided, and can overcoming electric arc that existing apparatus exists, to get into the arc-chute time long, and the electric arc introducing is inhomogeneous, can not be fast and effectively with the shortcoming of arc extinction.
The technical scheme of
the utility model is: a kind of arc-control device of circuit breaker comprises quiet, moving contact, arc control device between quiet, moving contact and be located at the arc-chute in the arc control device; It is characterized in that being fixed with respectively on said fixed contact and the moving contact fixed contact striking sheet and moving contact striking sheet, said fixed contact striking sheet and moving contact striking sheet extend to the two ends of arc-chute respectively; And the grid sheet in the said arc-chute is from stepped from long to short the arranging of fixed contact striking sheet one side to moving contact striking sheet one side.
are further, and the grid sheet in the arc-chute described in the utility model is divided into some grid sheet groups according to the length difference, and each grid sheet group is made up of the identical grid sheet of two leaf length at least.
are in concrete embodiment; Grid sheet in the arc-chute described in the utility model is divided into first, second, third and the four or four grid sheet group from long to short; First three grid sheet group is made up of the identical grid sheet of three leaf length, and the 4th grid sheet group is made up of the identical grid sheet of four leaf length.
are further, and arc-chute described in the utility model also comprises the locating cover that grips the grid sheet, and the both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover is provided with.
are the same with routine techniques, and separation is with insulation between the adjacent grid sheet in the utility model, and grid sheet, quiet, moving contact striking sheet be stalloy, and locating cover then adopts vulcanized fiber board to process.
are further; Arc control device described in the utility model are buckled each other by loam cake and lower cover and surround; Be equipped with flash barrier between the top of said quiet, moving contact striking sheet and the loam cake, and be equipped with down flash barrier between the below of quiet, moving contact striking sheet and the lower cover.
further, upper and lower flash barrier described in the utility model is formed by punching press stalloy and injection moulding nylon dimple close-fitting, stalloy is pressed into the cavity internal fixation at injection moulding nylon dimple center.The nylon material of injection moulding and the stalloy at center are beneficial to the generation magnetic blow-out of being heated in arc control device.
Moving contact striking sheet described in
the utility model links to each other with moving contact through connecting lead, and moving contact striking sheet is fixed with last flash barrier and following flash barrier simultaneously.Be that being connected between moving contact striking sheet and the moving contact is flexible coupling in the utility model, when specifically producing, the two ends that connect lead respectively with moving contact striking sheet with moving contact welding fix.Specifically also be that welding is fixing simultaneously between moving contact striking sheet and the upper and lower part flash barrier in the utility model, do like this to help magnetic blow-out.
Fixed contact striking sheet is that paster is welded and fixed on the fixed contact described in
the utility model.
The stepped arrangement of grid sheet in the arc-chute in
the utility model helps the even introducing of electric arc.Because electric arc often all produces from moving contact one side in the circuit breaker; So what will be provided with near the grid sheet of moving contact striking sheet one side is shorter; Help generation and transfer vacating space for electric arc; And will near the grid sheet of fixed contact striking sheet one side be provided with longer, then help reducing the resistance that electric arc gets into arc-chute.
The utility model has the advantages that:
are the arc-control device of this circuit breaker that provides of the utility model 1.; Its electric arc that will accumulate on the dynamic and static contact is dispersed on the dynamic and static contact striking sheet; And then re-boot to the arc-chute two ends; Fast electric arc is introduced in the arc-chute and extinguished, effectively protected dynamic and static contact, effectively improve the breaking capacity of circuit breaker not by scaling loss.
are the arc-control device of this circuit breaker that provides of the utility model 2.; Grid sheet in its arc-chute adopts stepped arrangement from long to short; Make electric arc to introduce arc-chute more quick and uniformly, improved the arc extinguishing efficient of arc-chute greatly.
are the arc-control device of this circuit breaker that provides of the utility model 3.; Owing to improved the breaking capacity of circuit breaker greatly; Not only suitablely be applied to small-sized AC circuit breaker, in the suitable too small-sized DC circuit breaker that is applied to arc extinguishing is had relatively high expectations.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the structural representation of the utility model.
wherein: 1, fixed contact; 2, moving contact; 3, arc control device; 4, arc-chute; 4a, first grid sheet group; 4b, the second grid sheet group; 4c, the 3rd grid sheet group; 4d, the 4th grid sheet group; 5, fixed contact striking sheet; 6, moving contact striking sheet; 7, locating cover; 8, following flash barrier.
Embodiment
embodiment: as shown in Figure 1; The arc-control device of this circuit breaker that present embodiment provides; It is by quiet, moving contact 1,2; At quiet, moving contact 1, buckle the arc control device 3 that surround each other between 2 and by loam cake (not drawing among the figure) and lower cover (not drawing among the figure); Be positioned at the arc-chute 4 of arc control device 3, be fixed to fixed contact striking sheet 5 and moving contact striking sheet 6 on fixed contact 1 and the moving contact 2 respectively, be located at the top and the last flash barrier (not drawing among the figure) between the loam cake of quiet, moving contact striking sheet 5,6 and be located at below and the following flash barrier 8 between the lower cover quiet, moving contact striking sheet 5,6 and constitute jointly.
Fixed contact striking sheet 5 is welded and fixed on the fixed contact 1 for paster described in
present embodiment, and is as shown in Figure 1, and this fixed contact striking sheet 5 extends to the left side of arc-chute 4.And said moving contact striking sheet 6 links to each other with moving contact 2 through connecting lead (not marking among the figure), and the two ends that connect lead are fixing with moving contact 2 welding with moving contact striking sheet 6 respectively.And the both sides of moving contact striking sheet 6 are equipped with some convexities, and correspondence is supported in the location hole that flash barrier and following flash barrier 8 be provided with welding again and fixed.Said moving contact striking sheet 6 extends to the right side of arc-chute 4.
said arc-chute 4 is made up of 13 sheet grating sheets and 7 of locating covers that are used to grip the grid sheet.Grid sheets in the present embodiment in the arc-chute 4 are divided into first, second, third and the four or four grid sheet group 4a, 4b, 4c, 4d from long to short; First three grid sheet group 4a, 4b, 4c are made up of the identical grid sheet of three leaf length, and the 4th grid sheet group 4d is made up of the identical grid sheet of four leaf length.These four grid sheet group 4a, 4b, 4c, 4d are from stepped from long to short the arranging of fixed contact striking sheet 5 one sides to moving contact striking sheet 6 one sides.The both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover 7 is provided with.The same with routine techniques, separation is with insulation between the grid sheet in the present embodiment, and grid sheet, quiet, moving contact striking sheet 5,6 be stalloy, and locating cover 7 then adopts vulcanized fiber board to process.
Go up flash barrier described in
present embodiment and lay respectively at the upper and lower of arc control device 3, loam cake and the lower cover of the arc-chute in the arc control device 34 with circuit breaker separated with following flash barrier 8.And last flash barrier is formed by punching press stalloy and injection moulding nylon dimple close-fitting with following flash barrier 8, and stalloy is pressed into the cavity internal fixation at injection moulding nylon dimple center.The nylon material of injection moulding and the stalloy at center are beneficial to the generation magnetic blow-out of being heated in arc control device 3.
The stepped arrangement of grid sheet in the arc-chute 4 in
present embodiment helps the even introducing of electric arc.Because electric arc often all produces from moving contact 2 one sides in the circuit breaker; So what will be provided with near the grid sheet of moving contact striking sheet 6 one sides is shorter; Help generation and transfer vacating space for electric arc; And will near the grid sheet of fixed contact striking sheet 5 one sides be provided with longer, then help reducing the resistance that electric arc gets into arc-chute 4.
The advantage of present embodiment is following
1. present embodiment will accumulate in electric arc on quiet, the moving contact 1,2 and be dispersed on quiet, the moving contact striking sheet 5,6; And then re-boot to arc-chute 4 two ends; Fast electric arc is introduced in the arc-chute 4 and extinguished; Effectively protect quiet, moving contact 1,2 not by scaling loss, effectively improved the breaking capacity of circuit breaker.
2. in the present embodiment grid sheets in the arc-chute 4 adopt stepped arrangement from long to short, make that electric arc can be more quick and introducing arc-chute 4 uniformly, improved the arc extinguishing efficient of arc-chute 4 greatly.
3. present embodiment is owing to improved the breaking capacity of circuit breaker greatly, and the small-sized AC circuit breaker that not only suits to be applied to is in the suitable too small-sized DC circuit breaker that is applied to arc extinguishing is had relatively high expectations.
the foregoing description certainly only are the technical conceive and the characteristics of explanation the utility model; Its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalent transformation or modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection range of the utility model.
Claims (8)
1. the arc-control device of a circuit breaker comprises quiet, moving contact (1,2), is positioned at the arc control device (3) between quiet, the moving contact (1,2) and is located at the arc-chute (4) of arc control device (3); It is characterized in that being fixed with fixed contact striking sheet (5) and moving contact striking sheet (6) on said fixed contact (1) and the moving contact (2) respectively, said fixed contact striking sheet (5) and moving contact striking sheet (6) extend to the two ends of arc-chute (4) respectively; And the grid sheet in the said arc-chute (4) is from stepped from long to short the arranging of fixed contact striking sheet (5) one side to moving contact striking sheet (6) one sides.
2. the arc-control device of circuit breaker according to claim 1 is characterized in that the grid sheet in the said arc-chute (4) is divided into some grid sheet groups according to the length difference, and each grid sheet group is made up of the identical grid sheet of two leaf length at least.
3. the arc-control device of circuit breaker according to claim 2; It is characterized in that grid sheet in the said arc-chute (4) is divided into first, second, third and the four or four grid sheet group (4a, 4b, 4c, 4d) from long to short; First three grid sheet group (4a, 4b, 4c) is made up of the identical grid sheet of three leaf length, and the 4th grid sheet group (4d) is made up of the identical grid sheet of four leaf length.
4. according to the arc-control device of claim 1 or 2 or 3 described circuit breakers; It is characterized in that said arc-chute (4) also comprises the locating cover (7) that grips the grid sheet; The both sides of said each grid sheet are equipped with some convexities, and correspondence is supported the location hole internal fixation that locating cover (7) is provided with.
5. the arc-control device of circuit breaker according to claim 1; It is characterized in that said arc control device (3) are buckled by loam cake and lower cover each other surrounds; Be equipped with flash barrier between the top of said quiet, moving contact striking sheet (5,6) and the loam cake, and be equipped with down flash barrier (8) between the below of quiet, moving contact striking sheet (5,6) and the lower cover.
6. the arc-control device of circuit breaker according to claim 5 is characterized in that said upward flash barrier and following flash barrier (8) are by punching press stalloy and injection moulding nylon dimple close-fitting composition.
7. the arc-control device of circuit breaker according to claim 5 it is characterized in that said moving contact striking sheet (6) links to each other with moving contact (2) through connecting lead, and moving contact striking sheet (6) is fixing with last flash barrier and following flash barrier (8) simultaneously.
8. the arc-control device of circuit breaker according to claim 1 is characterized in that said fixed contact striking sheet (5) is welded and fixed on the fixed contact (1) for paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120270835 CN202150427U (en) | 2011-07-28 | 2011-07-28 | Arc extinguishing device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120270835 CN202150427U (en) | 2011-07-28 | 2011-07-28 | Arc extinguishing device of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150427U true CN202150427U (en) | 2012-02-22 |
Family
ID=45591479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120270835 Expired - Lifetime CN202150427U (en) | 2011-07-28 | 2011-07-28 | Arc extinguishing device of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202150427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354636A (en) * | 2011-07-28 | 2012-02-15 | 法泰电器（江苏）股份有限公司 | Arc-extinguishing device of circuit breaker |
| CN105304423A (en) * | 2014-06-20 | 2016-02-03 | 三菱电机株式会社 | Cicrcuit breaker |
-
2011
- 2011-07-28 CN CN 201120270835 patent/CN202150427U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354636A (en) * | 2011-07-28 | 2012-02-15 | 法泰电器（江苏）股份有限公司 | Arc-extinguishing device of circuit breaker |
| CN105304423A (en) * | 2014-06-20 | 2016-02-03 | 三菱电机株式会社 | Cicrcuit breaker |
| CN105304423B (en) * | 2014-06-20 | 2017-10-31 | 三菱电机株式会社 | Breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120222 |
|
| CX01 | Expiry of patent term |