CN103000466A - Breaker and breaker arc chamber component - Google Patents
Breaker and breaker arc chamber component Download PDFInfo
- Publication number
- CN103000466A CN103000466A CN2011102742657A CN201110274265A CN103000466A CN 103000466 A CN103000466 A CN 103000466A CN 2011102742657 A CN2011102742657 A CN 2011102742657A CN 201110274265 A CN201110274265 A CN 201110274265A CN 103000466 A CN103000466 A CN 103000466A
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- China
- Prior art keywords
- arc
- chamber assembly
- arc chamber
- electric arc
- slot motor
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Abstract
The invention provides a breaker arc chamber component which comprises a plurality of arc sheets (10), a slot type motor (20) and a packaging shell (30). The packaging shell (30) consists of a first containing space (32) and a second containing space (34). The first containing space is used for containing the arc sheets. The second containing space is used for containing the slot type motor. An insulating coating is coated on the surface of the slot type motor. By the arc chamber component, the structure of the packaging shell is simplified, and machining difficulty and cost of the packaging shell are reduced.
Description
Technical field
The present invention relates to a kind of arc chamber assembly for circuit breaker, relate in particular to a kind of arc chamber assembly with slot motor.The invention still further relates to the circuit breaker that uses this arc chamber assembly.
Background technology
Circuit breaker is for the protection of the electric circuit the influence of peak current that do not exceeded the quata.Fig. 1 has shown a kind of structural representation of circuit breaker.As shown in the figure, circuit breaker comprises a fixed contact 42 and a mobile contact 44, fixed contact 42 is arranged on the housing 40 of circuit breaker generally speaking, and mobile contact 44 drives by its driving mechanism, can or separate along 42 contacts of the diagram direction of arrow and fixed contact, thereby realize connection and disjunction that electric circuit is connected.
The moment of fixed contact 42 and the state-transition of mobile contact 44 from the contact condition to the disjunction can produce electric arc between them, in order to extinguish this electric arc, is typically provided with the arc chamber assembly in the circuit breaker.The arc chamber assembly comprises a plurality of electric arc sheets 46 (among the figure only schematically identified one of them), and they can 46 conduction of the electric arc sheet of pilot arc in arc chamber, avoid electric arc to contact with mobile contact 44; While electric arc sheet 46 can cool off electric arc extinguishes it.Be directed into the motive force of arc chamber in order to increase electric arc, and the breaking speed of mobile contact 44 and fixed contact 42, the arc chamber assembly also is provided with a slot motor 48 that is installed on mobile contact 44 sides usually.Slot motor 48 is to be made by permeability magnetic material (for example steel), is generally annular, cast or U-shaped.When producing electric arc between fixed contact 42 and the mobile contact 44, electric arc and slot motor 48 produce electromagnetic action and generate magnetic field in the permeability magnetic materials of slot motor 48, and this magnetic field can be drawn into arc chamber and accelerate the rotation of mobile contact 44.Also need simultaneously the slot motor 48 special-purpose insulation crust of packing into, avoid itself and 46 conductings of electric arc sheet.
Be illustrated in figure 2 as a kind of existing arc chamber assembly, slot motor 8 and electric arc sheet 5 encapsulate respectively, and electric arc sheet 5 is arranged in the encapsulating shell 6 that injection mo(u)lding obtains, and also is provided with a mount pad 9 in the encapsulating shell 6, and slot motor 8 is placed on the mount pad 9.For realizing slot motor 8 and electric arc sheet 5, reaching the electrical isolation between slot motor 8 and the mobile contact (referring to Fig. 1), need to arrange insulating barrier 7 on the mount pad 9, therefore in encapsulating shell 6, not only to hold electric arc sheet 5 and slot motor 8, also mount pad and insulating barrier to be set, so that the internal structure of encapsulating shell is complicated, cause encapsulating shell processing difficulties, manufacturing cost height.
Summary of the invention
The purpose of this invention is to provide a kind of arc chamber assembly, simplify the structure of arc chamber component package shell, reduce the difficulty of processing of encapsulating shell.
Another object of the present invention provides a kind of circuit breaker that uses above-mentioned arc chamber assembly.
The invention provides the arc chamber assembly of circuit breaker, comprise a plurality of electric arc sheets, a slot motor and an encapsulating shell.Encapsulating shell is made of the first spatial accommodation and the second spatial accommodation.The first spatial accommodation is used for holding the electric arc sheet, and the second spatial accommodation is used for holding slot motor.The surface of slot motor is coated with insulating coating.Use this arc chamber assembly, simplified the structure of encapsulating shell, reduced difficulty of processing and the processing cost of encapsulating shell.
In another schematic execution mode of the arc chamber assembly of circuit breaker, encapsulating shell is comprised of first housing and second housing that combines with it.
In the another kind of schematically execution mode of the arc chamber assembly of circuit breaker, comprise two arc striking pieces in the electric arc sheet, remaining electric arc sheet is for leading the arc sheet, and arc striking piece is arranged on the two ends of electric arc sheet, leads the arc sheet and is arranged between two arc striking pieces.Wherein arc striking piece is U-shaped.
In another schematic execution mode of the arc chamber assembly of circuit breaker, the insulating coating on slot motor surface is the insulating varnish layer.
In another schematic execution mode of the arc chamber assembly of circuit breaker, also be provided with a wall that is formed by encapsulating shell between the first spatial accommodation and the second spatial accommodation.
In another schematic execution mode of the arc chamber assembly of circuit breaker, also be provided with a ventilation hole at the first spatial accommodation on away from the end face of the second spatial accommodation.
In another schematic execution mode of the arc chamber assembly of circuit breaker, slot motor is U-shaped.
The present invention also provides the circuit breaker that uses above-mentioned arc chamber assembly.
Hereinafter will be in clear and definite understandable mode, the accompanying drawings preferred embodiment is further described the arc chamber assembly of circuit breaker and above-mentioned characteristic, technical characterictic, advantage and the implementation thereof of circuit breaker thereof.
Description of drawings
Fig. 1 has shown a kind of structural representation of circuit breaker.
Fig. 2 is a kind of structural representation of existing arc chamber assembly.
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of a kind of exemplary embodiment of arc chamber assembly of circuit breaker.
Fig. 4 is the schematic diagram after arc chamber assembly shown in Figure 3 seals.
Fig. 5 has shown the structural representation of the another kind of execution mode of electric arc sheet in the arc chamber assembly.
Label declaration
5 electric arc sheets
6 encapsulating shells
7 insulation boards
8 slot motor
9 mount pads
10 electric arc sheets
12 arc striking pieces
122 arc channel
14 lead the arc sheet
20 slot motor
30 encapsulating shells
32 first spatial accommodations
322 pockets
324 ventilation holes
34 second spatial accommodations
36 first housings
37 walls
38 second housings
39 rivets
40 housings
42 fixed contacts
44 mobile contacts
46 electric arc sheets
48 slot motor
Embodiment
Understand for technical characterictic, purpose and effect to invention have more clearly, now contrast description of drawings the specific embodiment of the present invention, identical label represents identical or structural similarity but the identical part of function in each figure.
For making drawing succinct, only schematically shown part related to the present invention among each figure, they do not represent it as the practical structures of product.In addition, so that drawing succinctly is convenient to understand, the parts that have same structure or function in some figure have only schematically illustrated one of them, or have only marked one of them.
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of a kind of exemplary embodiment of arc chamber assembly of circuit breaker.As shown in the figure, the arc chamber assembly of circuit breaker comprises some electric arc sheets 10, slot motor 20 and encapsulating shell 30, wherein encapsulating shell 30 is divided into the first housing 36 and the second housing 38, in Fig. 3, the first housing 36 with rotate again an angle after the second housing 38 separates, to show the internal structure of the first housing 36.
Wherein, electric arc sheet 10 is arranged (the diagram direction of arrow is the direction of motion of circuit breaker mobile contact, referring to Fig. 1) along the illustrated direction of arrow.Be provided with first spatial accommodation 32 and second spatial accommodation 34 in the encapsulating shell 30, be provided with the some pockets 322 that adapt with electric arc sheet 10 positions and quantity in the first spatial accommodation 32 and the second spatial accommodation 34, electric arc sheet 10 can insert respectively in the first spatial accommodation 32 corresponding pockets 322, so that electric arc sheet 10 is fixed in the encapsulating shell 30.Slot motor 20 can be placed in the second spatial accommodation 34, so that slot motor 20 is fixed in the encapsulating shell 30.The surface-coated of slot motor 20 has insulating coating, by insulating coating, so that the mobile contact of metal arc sheet and circuit breaker, with the slot motor electrical isolation by the permeability magnetic material preparation.
Wherein insulating coating can be insulating varnish, also can be the black glue of insulation etc. other have the coating of insulating capacity, can control the method for insulation coating layer thickness, further improve the dielectric strength of slot motor.
Because the slot motor surface-coated has insulating coating, can be by the electrical isolation between this insulating coating realization slot motor and electric arc sheet and the mobile contact, and electrical isolation structure between slot motor and electric arc sheet and the mobile contact need to be set in encapsulating shell inside, thereby simplified the structure of encapsulating shell, difficulty of processing and the processing cost of encapsulating shell have been reduced, especially the encapsulating shell that obtains for injection moulding can be avoided using complicated slip bocks system at the encapsulating shell injection mold.
In the execution mode as shown in Figure 3, encapsulating shell 30 comprises first housing 36 and second housing 38, along on the illustrated direction of arrow, is respectively equipped with pockets 322 on the first housing 36 and the second housing 38.The first housing 36 and the second housing 38 can fasten and surround the first spatial accommodation 32 and the second spatial accommodation 34, and the pockets 322 phase contrapositions on the pockets 322 on the first housing 36 and the second housing 38 are so that electric arc sheet 10 can be plugged in these pockets 322.
Fig. 4 be after encapsulating shell 30 encapsulation in the arc chamber assembly of circuit breaker shown in Figure 3 schematic diagram, after wherein the first housing 36 and the second housing 38 fasten, by the rear encapsulation that is riveted together of two rivets 39.Certainly, encapsulating shell 30 also can adopt the structure of integral type, and do not resolve into the first housing 36 and the second housing 38, but it will be appreciated by those skilled in the art that, by encapsulating shell 30 being decomposed into the first housing 36 and the second housing 38, can further reduce the difficulty of processing of encapsulating shell 30, and simplify the structure of encapsulating shell processing mold.
As shown in Figure 4, after the first housing 36 and the second housing 38 fasten, be riveted together by two rivets 39, to guarantee having enough bonding strengths between the first housing 36 and the second housing 38.When electric arc passed through arc chamber, the air of encapsulating shell inside expanded rapidly, by the mode of will rivet between the first housing and the second housing, can effectively avoid the expansion space with the first housing and the second housing spreading.Certainly, can also adopt other type of attachment, for example bolt connects, and the modes such as clamping, and the quantity that increases or reduce as required the use rivet are to change the bond strength between the first housing and the second housing.
In the execution mode as shown in Figure 3, the formation encapsulating shell 30 of arc chamber assembly can comprise a wall 37 that is arranged between the first spatial accommodation 32 and the second spatial accommodation 34.In arc chamber, exist in the situation of electric arc, electric arc transmits between electric arc sheet 10, so that electric arc sheet 10 has higher temperature, by wall 37 is set, can avoid slot motor 20 directly to contact with electric arc sheet 10, avoid the insulating coating on high-temperature damage slot motor 20 surfaces of electric arc sheet 10, but also can be by improving the heat resistance of insulating coating, the first spatial accommodation 32 and the second spatial accommodation 34 are synthesized a spatial accommodation, so that slot motor directly contacts with the electric arc sheet.
In the execution mode as shown in Figure 3, slot motor 20 is U-shaped, increasing slot motor to the attraction of electric arc, and the acceleration that mobile contact is rotated.
In the execution mode as shown in Figure 3, can also be provided with a ventilation hole 324 in the first spatial accommodation 32, this ventilation hole is positioned on the end face of the first spatial accommodation 32 away from the second spatial accommodation 34 1 sides, the gas that expands in order to get rid of the electric arc heating indoor.
Fig. 5 has shown the structural representation of the another kind of execution mode of electric arc sheet in the arc chamber assembly.As shown in the figure, along on the illustrated direction of arrow, comprise two arc striking pieces 12 in the electric arc sheet 10, all the other are for leading arc sheet 14.One of them arc striking piece 12 is arranged on an end of the fixed contact of close circuit breaker in encapsulating shell 30 (not shown), arc striking piece 12 is U-shaped, so that arc striking piece 12 can be centered around the periphery of fixed contact, increase the attraction power of answering 12 pairs of electric arcs of arc sheet, make electric arc enter arc chamber by the arc channel 122 of arc striking piece 12; Another U-shaped arc striking piece 12 is arranged in the encapsulating shell away from the other end of circuit breaker fixed contact, leads arc sheet 14 and is arranged in the encapsulating shell between two arc striking pieces 12.By arc striking piece being set respectively and leading the arc sheet, can realize on the one hand conduction and the cooling effect of 10 pairs of electric arcs of electric arc sheet; The production cost of avoiding on the other hand using eurypalynous electric arc sheet and increasing the electric arc chip module.
The present invention also provides the circuit breaker that uses above-mentioned arc chamber assembly.
In this article, " schematically " expression " is served as example, example or explanation ", any diagram, the execution mode that is described in this article " schematically " should be interpreted as a kind of preferred or have more the technical scheme of advantage.
In this article, " U " shape is not the restriction on the strict geometry meaning, and it also can comprise the error that it will be appreciated by those skilled in the art that and allow when making this product.
Be to be understood that, each embodiment only comprises an independently technical scheme in this specification, this narrating mode of specification only is for clarity sake, those skilled in the art should make specification as a whole, technical scheme among each embodiment also can through appropriate combination, form other execution modes that it will be appreciated by those skilled in the art that.
Above listed a series of detailed description only is specifying for feasibility embodiment of the present invention; they are not to limit protection scope of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention does and all should be included within protection scope of the present invention.
Claims (10)
1. the arc chamber assembly of circuit breaker comprises a plurality of electric arc sheets (10), a slot motor (20) and an encapsulating shell (30), and it is characterized in that: described slot motor surface is coated with insulating coating.
2. arc chamber assembly as claimed in claim 1, the insulating coating on wherein said slot motor (20) surface is the insulating varnish layer.
3. arc chamber assembly as claimed in claim 1 or 2, wherein said encapsulating shell is made of the second spatial accommodation (34) that is used for holding first spatial accommodation (32) of described electric arc sheet and is used for arranging described slot motor;
4. arc chamber assembly as claimed in claim 3 also is provided with a wall that is formed by described encapsulating shell (37) between wherein said the first spatial accommodation (32) and described the second spatial accommodation (34).
5. arc chamber assembly as claimed in claim 3 wherein also is provided with a ventilation hole (324) on the end face of described the first spatial accommodation (32) away from described the second spatial accommodation (34).
6. arc chamber assembly as claimed in claim 1, wherein said encapsulating shell (30) is comprised of first housing (36) and second housing (38) that combines with it.
7. arc chamber assembly as claimed in claim 1, comprise two arc striking pieces (12) in the wherein said electric arc sheet (10), remaining described electric arc sheet (10) is for leading arc sheet (14), described arc striking piece is arranged on the two ends of described electric arc sheet, and the described arc sheet of leading is arranged between two described arc striking pieces.
8. arc chamber assembly as claimed in claim 7, wherein said arc striking piece (14) is U-shaped.
9. arc chamber assembly as claimed in claim 1, wherein said slot motor (20) is U-shaped.
10. use the circuit breaker such as arc chamber assembly as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102742657A CN103000466A (en) | 2011-09-15 | 2011-09-15 | Breaker and breaker arc chamber component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102742657A CN103000466A (en) | 2011-09-15 | 2011-09-15 | Breaker and breaker arc chamber component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103000466A true CN103000466A (en) | 2013-03-27 |
Family
ID=47928907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102742657A Pending CN103000466A (en) | 2011-09-15 | 2011-09-15 | Breaker and breaker arc chamber component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103000466A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0045904A1 (en) * | 1980-08-12 | 1982-02-17 | BROWN, BOVERI & CIE Aktiengesellschaft | Arc-extinguishing chamber |
| JPS63126136A (en) * | 1986-11-14 | 1988-05-30 | 松下電工株式会社 | Arc extinguisher |
| CN2762330Y (en) * | 2004-07-23 | 2006-03-01 | 浙江正泰电器股份有限公司 | Arc-chutes of low-voltage circuit breaker |
| CN101447346A (en) * | 2007-11-30 | 2009-06-03 | 西门子公司 | Arc-extinguishing device for electric switch |
-
2011
- 2011-09-15 CN CN2011102742657A patent/CN103000466A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0045904A1 (en) * | 1980-08-12 | 1982-02-17 | BROWN, BOVERI & CIE Aktiengesellschaft | Arc-extinguishing chamber |
| JPS63126136A (en) * | 1986-11-14 | 1988-05-30 | 松下電工株式会社 | Arc extinguisher |
| CN2762330Y (en) * | 2004-07-23 | 2006-03-01 | 浙江正泰电器股份有限公司 | Arc-chutes of low-voltage circuit breaker |
| CN101447346A (en) * | 2007-11-30 | 2009-06-03 | 西门子公司 | Arc-extinguishing device for electric switch |
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Application publication date: 20130327 |