CN202601538U - Small-sized direct-current circuit breaker provided with arc striking system - Google Patents
Small-sized direct-current circuit breaker provided with arc striking system Download PDFInfo
- Publication number
- CN202601538U CN202601538U CN 201220293732 CN201220293732U CN202601538U CN 202601538 U CN202601538 U CN 202601538U CN 201220293732 CN201220293732 CN 201220293732 CN 201220293732 U CN201220293732 U CN 201220293732U CN 202601538 U CN202601538 U CN 202601538U
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- arc
- magnetic conduction
- conduction sheet
- sheet
- circuit breaker
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Abstract
The utility model discloses a small-sized direct-current circuit breaker provided with an arc striking system, comprising an upper cover and a base, an operation device, an electromagnetic releasing mechanism, a contact system, an arc extinguishing chamber and the arc striking system, wherein a shell is formed by the upper cover and the base; the contact system is provided with a movable contact and a static contact; the arc striking system comprises an upper arc separation plate, a lower arc separation plate, an upper magnetic conduction sheet, a lower magnetic conduction sheet, an arc striking sheet and a middle magnetic conduction sheet; the upper arc separation plate and the lower arc separation plate are respectively mounted at the corresponding positions of the upper cover and the base; the upper magnetic conduction sheet is arranged between the upper arc separation plate and the upper cover; the lower magnetic conduction sheet is arranged between the lower arc separation plate and the base; the middle magnetic conduction sheet is arranged at the outer side of the arc striking sheet; the upper and lower ends of the middle magnetic conduction sheet are respectively connected with the upper magnetic conduction sheet and the lower magnetic conduction sheet to form a U shape; one of the upper magnetic conduction sheet and the lower magnetic conduction sheet is a permanent magnet and the other one of the upper magnetic conduction sheet and the lower magnetic conduction sheet is an iron sheet; and the middle magnetic conduction sheet is an iron sheet. The movement speed of an electric arc into the arc extinguishing chamber is accelerated due to the existence of the arc striking system, so that the electric arc enters the arc extinguishing chamber to extinguish arc as soon as possible; and the arc combustion time is shortened, the breaking capacity of the circuit breaker is improved and the contacts are effectively prevented from being burnt.
Description
Technical field
The utility model belongs to the breaker structure design field, is specifically related to a kind of small-sized DC circuit breaker with arc ignition system.
Background technology
When a certain part of path breaks down in the electrical network, need to rely on circuit breaker with the circuitry cuts that breaks down.When the circuit breaker disjunction, can between the circuit breaker dynamic/static contact, producing electric arc, the great amount of heat that electric arc brings, if electric arc overstand scaling loss circuit breaker probably for a long time between dynamic/static contact, this just needs as early as possible electric arc is introduced the rapid blow-out of arc control device.
For can better blow-out; The common way of small-sized DC circuit breaker is the magnetic blow-out system (being arc ignition system) that is provided with in the disjunction zone of fixed contact and moving contact at present; This magnetic blow-out system is made up of two magnetic conduction sheets that are separately positioned on circuit breaker drain pan and loam cake, and the action of a magnetic field that the electric arc that between moving contact and fixed contact, produces is produced by two magnetic conduction sheets carries out arc extinguishing and leave voltage contact area entering arc control device; The magnetic field force that right existing magnetic blow-out system is produced is little; Arc Motion speed is relatively slow, and the moving contact scaling loss is serious, and breaking capacity is undesirable.
The utility model content
To the above-mentioned deficiency that exists in the background technology; The utility model provides a kind of small-sized DC circuit breaker with arc ignition system; Because the movement velocity that electric arc gets into arc control device has been accelerated in the existence of this arc ignition system, makes electric arc get into the arc control device blow-out as early as possible, shortens the arcing time; Improve the breaking capacity of circuit breaker, can effectively avoid contact burning.
The technical scheme that realizes the utility model purpose is:
A kind of small-sized DC circuit breaker with arc ignition system, the arc ignition system that comprises loam cake and the base that constitutes housing, the contact system that is provided with moving contact and fixed contact, arc control device and the electric arc that produces between moving contact and the fixed contact introduced arc control device; Said arc ignition system comprises last flash barrier and the following flash barrier that is installed in loam cake and base correspondence position respectively and is arranged on and saidly goes up last magnetic conduction sheet between flash barrier and the loam cake, is arranged on following magnetic conduction sheet and striking sheet between said time flash barrier and the base; Said arc ignition system also comprises the magnetic conduction sheet that is arranged in the striking sheet outside, and the upper and lower side of said middle magnetic conduction sheet is connected to form a U-shaped with the said magnetic conduction sheet of going up with following magnetic conduction sheet respectively; ; Said of going up in magnetic conduction sheet and the following magnetic conduction sheet is a permanent magnet, and another is an iron plate, and said middle magnetic conduction sheet is an iron plate.
In the technique scheme, the said flash barrier of going up is provided with the breach that magnetic conduction sheet passes in the confession with following flash barrier.
In the technique scheme, be provided with the bend of arc in the bottom of moving contact, said bend is crooked towards the arc control device direction, promptly is connected to the arc iron plate near arc control device one face down bonding in the inboard of said bend.
In the technique scheme, said bend is through bending and molding by said moving contact bottom.
The utlity model has positive effect:
The arc ignition system of the small-sized DC circuit breaker in the utility model has increased middle magnetic conduction sheet on the basis of traditional arc ignition system, said middle magnetic conduction sheet and last magnetic conduction sheet are formed a U-shaped structure with following magnetic conduction sheet, when electric arc produces; Its magnetic field intensity increases greatly; Accelerate Arc Motion speed, made electric arc get into the arc control device arc extinguishing within a short period of time, shortened the arcing time; Improve the breaking capacity of circuit breaker, can effectively avoid contact burning; The 63A product that adopts above-mentioned arc ignition system is through evidence, and short circuit breaking capacity is splendid, has good result of use.
Description of drawings
Fig. 1 is for having a kind of forward view of the small-sized DC circuit breaker of arc ignition system in the utility model;
Fig. 2 removes the structural representation of loam cake for Fig. 1;
A kind of cutaway view of Fig. 3 for dissecing along the A-A line among Fig. 1;
Reference numeral shown in the figure is:
The 1-housing; The 11-loam cake; The 12-base; The 2-contact system; The 21-moving contact; The 22-fixed contact; The 23-bend; 24-arc iron plate; The 3-arc control device; The 4-arc ignition system; The last flash barrier of 41-; Flash barrier under the 42-; The last magnetic conduction sheet of 43-; Magnetic conduction sheet under the 44-; 45-striking sheet; Magnetic conduction sheet among the 46-; The 5-operating means; 6-flexible connection lead; 7-electromagnetic trip mechanism; The 8-binding post.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 3 has shown a kind of embodiment of the utility model.Wherein, Fig. 1 is for having a kind of forward view of the small-sized DC circuit breaker of arc ignition system in the utility model; Fig. 2 removes the structural representation of loam cake for Fig. 1; A kind of cutaway view of Fig. 3 for dissecing along the A-A line among Fig. 1.
Referring to Fig. 1 to Fig. 3; A kind of small-sized DC circuit breaker with arc ignition system, the arc ignition system 4 that comprises loam cake 11 and the base 12 that constitutes housing 1, the contact system 2 that is provided with moving contact 21 and fixed contact 22, arc control device 3 and the electric arc that produces between moving contact 21 and the fixed contact 22 introduced arc control device 3; The upper end of said moving contact 21 is fixed on the operating means 5 of circuit breaker and through flexible connection lead 6 and is electrically connected with the coil of electromagnetic trip mechanism 7, and said fixed contact 22 binding post 8 interior with being arranged on housing is electrically connected; Be provided with the bend 23 of arc in the bottom of moving contact 21; Said bend 23 is crooked towards arc control device 3 directions; Inboard at said bend 23 promptly is connected to arc iron plate 24 near arc control device 3 one face down bondings; Promptly be provided with moving contact in said bend 23 outsides, be provided with fixed contact near moving contact 21 1 sides at said fixed contact 22 near fixed contact 22 1 sides; Said arc ignition system 4 comprises last flash barrier 41 and the following flash barrier 42 that is installed in loam cake 11 and base 12 correspondence positions respectively and is arranged on and saidly goes up last magnetic conduction sheet 43 between flash barrier 41 and the loam cake 11, is arranged on following magnetic conduction sheet 44 and striking sheet 45 between said time flash barrier 42 and the base 12; This arc ignition system 4 also comprises the magnetic conduction sheet 46 that is arranged in striking sheet 45 outsides; In the present embodiment; On said, be provided with the breach that magnetic conduction sheet 46 passes in the confession on flash barrier 41 and the following flash barrier 42, the upper and lower side of said middle magnetic conduction sheet 46 passes corresponding breach and links to each other with following magnetic conduction sheet 44 and form a U-shaped with said upward magnetic conduction sheet 43; Said of going up in magnetic conduction sheet 43 and the following magnetic conduction sheet 44 is a permanent magnet, and another is an iron plate, and said middle magnetic conduction sheet 46 is an iron plate.Owing to adopt said structure, when electric arc produced, the magnetic field intensity in the arc ignition system increased greatly; Accelerate Arc Motion speed, made electric arc get into the arc control device arc extinguishing within a short period of time, shortened the arcing time; Improve the breaking capacity of circuit breaker, can effectively avoid contact burning; The 63A product that adopts above-mentioned arc ignition system is through evidence, and short circuit breaking capacity is splendid, has good result of use; While is adding man-hour, only need original miniature circuit breaker internal structure be changed a little to get final product, and input cost is extremely low.
In the present embodiment, said bend 23 is through bending and molding by said moving contact 21 bottoms.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the execution mode of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection range of the utility model.
Claims (4)
1. small-sized DC circuit breaker with arc ignition system, the arc ignition system that comprises the loam cake that constitutes housing and base, operating means, electromagnetic trip mechanism, the contact system that is provided with moving contact and fixed contact, arc control device and the electric arc that produces between moving contact and the fixed contact introduced arc control device; Said arc ignition system comprises last flash barrier and the following flash barrier that is installed in loam cake and base correspondence position respectively and is arranged on and saidly goes up last magnetic conduction sheet between flash barrier and the loam cake, is arranged on following magnetic conduction sheet and striking sheet between said time flash barrier and the base;
It is characterized in that: said arc ignition system also comprises the magnetic conduction sheet that is arranged in the striking sheet outside, and the upper and lower side of said middle magnetic conduction sheet is connected to form a U-shaped with the said magnetic conduction sheet of going up with following magnetic conduction sheet respectively; Said of going up in magnetic conduction sheet and the following magnetic conduction sheet is a permanent magnet, and another is an iron plate, and said middle magnetic conduction sheet is an iron plate.
2. the small-sized DC circuit breaker with arc ignition system according to claim 1 is characterized in that: the said flash barrier of going up is provided with the breach that magnetic conduction sheet passes in the confession with following flash barrier.
3. the small-sized DC circuit breaker with arc ignition system according to claim 1; It is characterized in that: the bend that is provided with arc in the bottom of moving contact; Said bend is crooked towards the arc control device direction, promptly is connected to the arc iron plate near arc control device one face down bonding in the inboard of said bend.
4. the small-sized DC circuit breaker with arc ignition system according to claim 3 is characterized in that: said bend is through bending and molding by said moving contact bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293732 CN202601538U (en) | 2012-06-20 | 2012-06-20 | Small-sized direct-current circuit breaker provided with arc striking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293732 CN202601538U (en) | 2012-06-20 | 2012-06-20 | Small-sized direct-current circuit breaker provided with arc striking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601538U true CN202601538U (en) | 2012-12-12 |
Family
ID=47319068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220293732 Expired - Lifetime CN202601538U (en) | 2012-06-20 | 2012-06-20 | Small-sized direct-current circuit breaker provided with arc striking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202601538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
-
2012
- 2012-06-20 CN CN 201220293732 patent/CN202601538U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
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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: 20121212 |
|
| CX01 | Expiry of patent term |