CN205582865U - Small -sized circuit breaker and arc extinguishing device thereof - Google Patents
Small -sized circuit breaker and arc extinguishing device thereof Download PDFInfo
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- CN205582865U CN205582865U CN201620179692.5U CN201620179692U CN205582865U CN 205582865 U CN205582865 U CN 205582865U CN 201620179692 U CN201620179692 U CN 201620179692U CN 205582865 U CN205582865 U CN 205582865U
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- arc
- control device
- backboard
- electric arc
- outlet
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Abstract
The utility model provides a circuit breaker arc control device, including the on -edge board of two relative settings, be equipped with the parallel range upon range of arc extinguishing bars piece of multi -disc between two on -edge boards, arcing passageway between two adjacent arc extinguishing bars pieces, arc control device's front end opens, and a backplate is established to the rear end cap, be equipped with the electric arc export that corresponds the intercommunication with each electric arc passageway on the backplate, be equipped with convex partition bead between two upper and lower adjacent electric arc exports of backplate lateral surface. The partition bead that sets up between two upper and lower adjacent electric arc exports of arc device backplate lateral surface can increase the creepage distance between the adjacent electric arc export to the short electric arc that makes two adjacent electric arcs export out is difficult to take place to puncture and restrikes, so, the utility model discloses a small -sized circuit breaker and arc extinguishing device thereof can improve the arc extinguishing performance of circuit breaker.
Description
Technical field
This utility model relates to a kind of miniature circuit breaker, particularly to the arc-control device of a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker can produce electric arc when dynamic and static contact separates, and in order to extinguish electric arc, miniature circuit breaker typically uses grid
Formula arc-control device, grid formula arc-control device generally comprises the arc extinguishing grid pieces of multi-disc stacking, and arc extinguishing grid pieces is typically propped up by two cant boards
Holding, form arc channel between adjacent two panels arc extinguishing grid pieces, the electric arc produced during dynamic and static contact disjunction is introduced by arc initiation device
Arc channel, and export out from arc channel opposite side electric arc；So, a long arc is divided into the short electric arc of multistage, works as friendship
During stream current over-zero, all short electric arcs extinguish simultaneously.But, because climbing between two adjacent arc channel electric arc out
Electrical distance is less, it may occur that electrical breakdown and restrike, the arc extinction performance causing chopper is not enough, especially at the electricity of chopper
When pressure or electric current are bigger, this situation becomes apparent from.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of miniature circuit breaker and interrupter cartridge thereof
Put, it is possible to increase the arc extinction performance of chopper.
For achieving the above object and other relevant purposes, this utility model provides the arc-control device of a kind of chopper, uses following skill
Art scheme: a kind of Arc Distinguishing Device for Circuit Breakers, including two cant boards being oppositely arranged, is provided with multi-disc between two cant boards parallel
The arc extinguishing grid pieces of stacking, forms arc channel between adjacent two panels arc extinguishing grid pieces；The front end of described arc-control device is opened wide, rear end
Lid sets a backboard；Described backboard is provided with the electric arc outlet of connection corresponding with each arc channel, neighbouring at backboard lateral surface
The outlet of two electric arcs between be provided with the separation fin of protrusion.
Preferably, it is alternately arranged about the neighbouring outlet of the electric arc corresponding to two arc channel.
Preferably, the medial surface of backboard is provided with the location fin that can be inserted between adjacent two panels arc extinguishing grid pieces.
Further, described separation fin is semi-cylindrical.
Further, described backboard is made up of insulant.
Preferably, the centre position of the lateral surface of described backboard is provided with the dividing wall extended up and down.
Preferably, the neighbouring outlet of the electric arc corresponding to two arc channel lays respectively at the dividing wall left and right sides.
Preferably, in the same side of dividing wall, electric arc outlet is alternately arranged with separation fin and neighbouring with two respectively
The position of arc channel is corresponding.
Preferably, described dividing wall exceeds separation fin.
With above-mentioned arc-control device correspondingly, this utility model also provides for a kind of miniature circuit breaker, including such scheme and arbitrary preferably
Arc-control device described in scheme.
As it has been described above, a kind of Arc Distinguishing Device for Circuit Breakers of the present utility model, have the advantages that owing to carrying on the back at arc-control device
Being provided with the separation fin of protrusion between neighbouring two the electric arc outlet of plate lateral surface, the separation fin of protrusion makes neighbouring
The outlet of two electric arcs between creep age distance increase, thus the short electric arc exporting out from two neighbouring electric arcs is not easy
Puncture and restrike, so, a kind of Arc Distinguishing Device for Circuit Breakers of the present utility model can improve the arc extinction performance of chopper.This
A kind of miniature circuit breaker of utility model uses above-mentioned arc-control device, the most just has above-mentioned beneficial effect, and here is omitted.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the miniature circuit breaker of this utility model embodiment.
Fig. 2 is shown as the structural representation of arc-control device in Fig. 1, moving contact, static contact, arc leading angle.
Fig. 3 is shown as the schematic diagram of arc-control device.
Fig. 4 is shown as the schematic perspective view of backboard.
Fig. 5 is shown as the schematic perspective view of another angle of backboard.
Fig. 6 is shown as the schematic diagram that arc-control device is installed with Shell of circuit breaker, and housing only shows the part-structure of left half side body,
Dividing wall on the backboard of arc-control device does not shows.
Fig. 7 is shown as the backboard of arc-control device and the attachment structure schematic diagram of demarcation strip.
Piece mark explanation
1 moving contact 10 positions fin
2 static contact 11 arc extinguishing grid pieces
3 arc leading angle 12 arc channel
4 arc-control device 13 run-on tabs
5 cant board 14 striking passages
6 backboard 15 demarcation strips
7a electric arc outlet 16 first blow-out passages
7b electric arc outlet 17 second blow-out passages
8a separates fin 18 housing
8b separates fin 19 gusset
9 dividing walls
Detailed description of the invention
Below by way of specific instantiation, embodiment of the present utility model being described, those skilled in the art can be by this specification institute
The content disclosed understands other advantages of the present utility model and effect easily.This utility model can also be by the most different tools
Body embodiment is carried out or applies, and the every details in this specification can also be based on different viewpoints and application, at the not back of the body
Various modification or change is carried out under spirit of the present utility model.
Fig. 1 is shown as the structural representation of the miniature circuit breaker of this utility model embodiment, Fig. 2 be shown as arc-control device in Fig. 1,
Moving contact, static contact, the structural representation of arc leading angle；Referring to Fig. 1 and Fig. 2, chopper includes moving contact 1 and static contact 2,
Static contact 2 is provided with arc leading angle 3, is additionally provided with run-on tab 13 below arc leading angle 3, is formed and draw between arc leading angle 3 and run-on tab 13
The electric arc produced when arc passage 14, moving contact 1 and static contact 2 separate is directed to go out by striking passage 14 under magnetic blow-out effect
Arc device 4 is also divided into some sections of short electric arcs, and short electric arc cools down in arc-control device 4, finally extinguishes.
Fig. 3 is shown as the schematic diagram of arc-control device, and as shown in Figures 2 and 3, arc-control device 4 includes two sides being oppositely arranged
Riser 5, is provided with the arc extinguishing grid pieces 11 of the parallel stacking of multi-disc between two cant boards 5, two sides of each arc extinguishing grid pieces 11 are respectively
It is bearing on two cant boards 5, cant board 5 can arrange the slot corresponding with each arc extinguishing grid pieces 11, and at arc extinguishing grid pieces
Arranging the plug matched with slot on the dual-side of 11, the plug on the limit, the left and right sides of each arc extinguishing grid pieces 11 is inserted into edge-on
In slot on plate 5.Arc channel 12 is formed between adjacent two panels arc extinguishing grid pieces 11；The front end of described arc-control device 4 opens
Opening, the moving contact 1 of chopper is separated produced electric arc with static contact 2 and is entered from the front end of arc-control device 4 by striking passage 14
Entering arc channel 12, the rear end cap of arc channel 12 sets a backboard 6, and backboard 6 is made up of insulant；Set on described backboard 6
Having electric arc outlet 7a, 7b of connection corresponding with each arc channel 12, neighbouring two electric arc at backboard 6 lateral surface goes out
Mouth is provided with separation fin 8a, 8b of protrusion between 7a, 7b, the length separating fin 8a, 8b should export 7a, 7b than electric arc
Length longer, separate fin 8a, 8b can be the geometries such as semi-cylindrical, rectangular shape, triangle.Because
Separate fin 8a, 8b of protruding make neighbouring two electric arc outlet creep age distance between 7a, 7b increase, thus from upper
Under adjacent two electric arcs outlet 7a, 7b short electric arcs out be less likely to occur to puncture and restrike, so, of the present utility model one
Plant Arc Distinguishing Device for Circuit Breakers 4 and can improve the arc extinction performance of chopper.
Fig. 4 is shown as the schematic perspective view of backboard, and as shown in Figure 3 and Figure 4, electric arc outlet 7a, 7b size can be led to than electric arc
Road 12 inlet size is smaller, and each arc channel 12 is partly covered by backboard 6 at its width, the most capped
Part exports 7a, 7b as electric arc；And the neighbouring electric arc corresponding to two arc channel 12 outlet about 7b, 7a
Be alternately arranged, one of them electric arc outlet 7b near backboard 6 left side, another electric arc outlet 7a near backboard 6 right edge,
So, two neighbouring electric arc outlets creep age distance between 7a, 7b can be some larger, makes neighbouring two electric arc
Outlet 7a, 7b short electric arc out is less likely to occur to puncture and restrike.Go out to increase the adjacent arc from backboard 6 left and right sides
Dielectric strength between mouthful 7b, 7a short electric arc out, can the interposition of the lateral surface of backboard 6 install about one extend point
Partition wall 9, so, the adjacent arc outlet of backboard 6 left and right sides creep age distance between 7b, 7a increases, from backboard about 6
It is less likely to occur to puncture and restrike between adjacent arc outlet 7b, 7a short electric arc out of both sides.According to actual structure needs
The height arranging dividing wall 9 and separate fin 8a, 8b, dividing wall 9 can exceed separation fin 8a, 8b, so left and right two
The adjacent arc outlet of side creep age distance between 7b, 7a is bigger, and insulating properties are more preferable.As shown in Figure 4, neighbouring two
Electric arc outlet about 7b, 7a corresponding to individual arc channel 12 are alternately arranged, and lay respectively at dividing wall 9 left and right sides,
And in the same side of dividing wall 9, the electricity that electric arc outlet 7a/7b is alternately arranged and neighbouring with separating fin 8a/8b
Arc outlet 7a/7b and a position separating arc channel 12 neighbouring with two respectively for fin 8a/8b are corresponding.Pass through
Such setting, the outlet of each electric arc is provided with separation fin 8a, 8b or dividing wall 9, insulating properties energy between 7a, 7b
Enough reach optimum state.
As it is shown in figure 5, the location fin that can be inserted between adjacent two panels arc extinguishing grid pieces 11 can be arranged on the medial surface of backboard 6
10, neighbouring two panels arc extinguishing grid pieces 11 clamps location fin 10, so, when installing backboard 6, by backboard 6
Each location fin 10 is stuck between each arc extinguishing grid pieces 11, can make assembling accurate positioning, connect the most firm.
The miniature circuit breaker that this utility model also provides for, as shown in Figure 6 and Figure 7, chopper includes housing 18 and any of the above-described skill
The arc-control device 4 of art scheme and optimal technical scheme, arc-control device 4 is located in housing 18, and the inwall of housing 18 is provided with point
Dividing plate 15, demarcation strip 15 is positioned at backboard 6 rear of arc-control device 4, and demarcation strip 15 rear is provided with a gusset 19, demarcation strip
The upper end of 15 is pressed close to form the first blow-out passage between the gusset 19 on the backboard 6 of arc-control device 4, demarcation strip 15 and housing 18
16, form the second blow-out passage 17 between the backboard 6 of demarcation strip 15 and arc-control device 4, a part of electric arc of arc-control device 4
Outlet connects with the first blow-out passage 16, and the outlet of another part electric arc connects with the second blow-out passage 17, it is preferable that this practicality
Novel Shell of circuit breaker 18 is put together by left and right two half shell, and demarcation strip is also classified into left and right two halves, the demarcation strip of left one side of something from
Left shell half body extends right up to the left surface of dividing wall 9, and the demarcation strip of right one side of something extends to dividing wall 9 to the left from right half shell
There is side.Because demarcation strip can enter the first blow-out passage with the electric arc that the electric arc of an arc-control device part exports out, make another
The electric arc that the electric arc of part exports out enters the second blow-out passage out, the first blow-out passage and the electric arc quilt of the second blow-out passage
Separate, prevent arc short circuit, using the teaching of the invention it is possible to provide the arc extinguishing ability of chopper.
Technical scheme based on upper embodiment, miniature circuit breaker of the present utility model and arc-control device thereof have the advantages that
Arrange on the separation fin arranged between neighbouring two the electric arc outlet of arc-control device backboard lateral surface and backboard lateral surface
Dividing wall can increase the creep age distance between the outlet of adjacent electric arc, so that the short electricity that adjacent two electric arc exports out
Arc is less likely to occur to puncture and restrike, and, the demarcation strip that Shell of circuit breaker is arranged can be by from arc-control device electric arc out
Entering into different blow-out passages, the electric arc entering into different blow-out passages is separated, it is possible to prevent arc short circuit；
So, a kind of miniature circuit breaker of the present utility model and arc-control device thereof can improve the arc extinction performance of chopper.
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for limiting this utility model.Any
Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by those skilled in the art.
Therefore, such as art has usually intellectual without departing from the spirit disclosed in this utility model with under technological thought
All equivalences completed are modified or change, and must be contained by claim of the present utility model.
Claims (10)
1. an Arc Distinguishing Device for Circuit Breakers, including two cant boards being oppositely arranged (5), is provided with multi-disc between two cant boards (5)
The arc extinguishing grid pieces (11) of parallel stacking, forms arc channel (12) between adjacent two panels arc extinguishing grid pieces (11)；Described arc extinguishing
The front end of device is opened wide, and rear end cap sets a backboard (6)；It is characterized in that:
Described backboard (6) is provided with electric arc outlet (7a, 7b) of connection corresponding with each arc channel (12), in backboard (6)
The separation fin (8a, 8b) of protrusion it is provided with between neighbouring two electric arc outlet (7a, 7b) of lateral surface.
2. arc-control device as claimed in claim 1, is characterized in that: the neighbouring electricity corresponding to two arc channel (12)
Arc outlet (7b, 7a) left and right is alternately arranged.
3. arc-control device as claimed in claim 1, is characterized in that: the medial surface of backboard (6) is provided with and can be inserted into adjacent two panels and go out
Location fin (10) between arc grid (11).
4. arc-control device as claimed in claim 1, is characterized in that: described separation fin (8a, 8b) is semi-cylindrical.
5. arc-control device as claimed in claim 1, is characterized in that: described backboard (6) is made up of insulant.
6. arc-control device as claimed in claim 1, is characterized in that: the centre position of the lateral surface of described backboard (6) is provided with up and down
The dividing wall (9) extended.
7. arc-control device as claimed in claim 6, is characterized in that: the neighbouring electricity corresponding to two arc channel (12)
Arc outlet (7b, 7a) lays respectively at dividing wall (9) left and right sides.
8. arc-control device as claimed in claim 6, is characterized in that: in the same side of dividing wall (9), electric arc outlet (7a 7b)
The position of the arc channel (12) alternately arranged and neighbouring with two respectively with separating fin (8a, 8b) is corresponding.
9. arc-control device as claimed in claim 6, is characterized in that: described dividing wall (9) exceeds separation fin (8a, 8b).
10. a miniature circuit breaker, is characterized in that: include the arc-control device described in housing (18) and any one of claim 1 to 9,
Described arc-control device is located in housing (18), and the inwall of housing (18) is provided with demarcation strip (15), described demarcation strip (15)
Being positioned at backboard (6) rear of arc-control device, described backboard (6), demarcation strip (15) and shell are pressed close in the upper end of demarcation strip (15)
Form the first blow-out passage (16) between body (18), between the backboard (6) of demarcation strip (15) and arc-control device, form second
Blow-out passage (17), a part of electric arc outlet of described arc-control device connects with the first blow-out passage (16), another part electric arc
Outlet connects with the second blow-out passage (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179692.5U CN205582865U (en) | 2016-03-09 | 2016-03-09 | Small -sized circuit breaker and arc extinguishing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179692.5U CN205582865U (en) | 2016-03-09 | 2016-03-09 | Small -sized circuit breaker and arc extinguishing device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205582865U true CN205582865U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620179692.5U Active CN205582865U (en) | 2016-03-09 | 2016-03-09 | Small -sized circuit breaker and arc extinguishing device thereof |
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| CN (1) | CN205582865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609387A (en) * | 2016-03-09 | 2016-05-25 | 苏州未来电器股份有限公司 | Miniature breaker and arc-extinguishing device thereof |
-
2016
- 2016-03-09 CN CN201620179692.5U patent/CN205582865U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609387A (en) * | 2016-03-09 | 2016-05-25 | 苏州未来电器股份有限公司 | Miniature breaker and arc-extinguishing device thereof |
| CN105609387B (en) * | 2016-03-09 | 2018-07-27 | 苏州未来电器股份有限公司 | A kind of miniature circuit breaker and its arc-control device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |