CN112530765A - N-pole arc extinguishing device of circuit breaker - Google Patents
N-pole arc extinguishing device of circuit breaker Download PDFInfo
- Publication number
- CN112530765A CN112530765A CN202011562471.3A CN202011562471A CN112530765A CN 112530765 A CN112530765 A CN 112530765A CN 202011562471 A CN202011562471 A CN 202011562471A CN 112530765 A CN112530765 A CN 112530765A
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- China
- Prior art keywords
- arc
- edge
- base
- circuit breaker
- buffer area
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- 230000003068 static effect Effects 0.000 claims abstract description 18
- 238000010891 electric arc Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 238000007664 blowing Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a circuit breaker, in particular to an N-pole arc extinguishing device in the circuit breaker. The invention adopts the following technical scheme: the utility model provides a N utmost point arc control device of circuit breaker, is including N utmost point static contact, N utmost point moving contact, run-on plate, well seat and base, N utmost point static contact including wiring portion, contact portion and run-on portion, its characterized in that: the middle seat or/and the base are provided with clamping grooves, the static contact and the arc striking plate are arranged in the corresponding clamping grooves, the arc striking plate comprises a straight edge, a vertical edge and a bevel edge, the bevel edge is arranged in an inclined mode towards one side of the straight edge, an arc striking area is formed between the bevel edge and the arc striking portion of the N-pole static contact, one side, close to the base, of the vertical edge is provided with a notch, and an exhaust channel is formed between the notch and the base. By adopting the scheme, the invention overcomes the problems in the prior art, and provides the novel N-pole arc extinguishing device which is provided with the moving contact and the static contact on the N pole and can realize good arc extinguishing and exhausting functions.
Description
Technical Field
The invention relates to a circuit breaker, in particular to an N-pole arc extinguishing device in the circuit breaker.
Background
The block terminal of some countries requires that the inlet wire of the N utmost point and the play line of the L utmost point of N utmost point are in same one side, and the N utmost point has two kinds of modes: 1. the N pole is not provided with a moving contact and a static contact and is disconnected, namely the N pole is directly connected; 2. the N pole is provided with a movable contact and a fixed contact which can be disconnected, and the phenomena of contact burning and product explosion are caused because the arc striking and the exhaust of the N pole are not smooth due to the space problem.
Disclosure of Invention
The invention overcomes the problems in the prior art, and provides a novel N-pole arc extinguishing device which is provided with a movable contact and a fixed contact on an N pole and can realize good arc extinguishing and exhausting functions.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a N utmost point arc control device of circuit breaker, is including N utmost point static contact, N utmost point moving contact, run-on plate, well seat and base, N utmost point static contact including wiring portion, contact portion and run-on portion, its characterized in that: the middle seat or/and the base are provided with clamping grooves, the static contact and the arc striking plate are arranged in the corresponding clamping grooves, the arc striking plate comprises a straight edge, a vertical edge and a bevel edge, the bevel edge is obliquely arranged towards one side of the straight edge, an arc striking area is formed between the bevel edge and the arc striking part of the N-pole static contact, a first buffer area and a second buffer area are respectively arranged on the two sides of the middle seat and located on the vertical edge, a notch is arranged on one side of the vertical edge close to the base, an exhaust channel is formed between the notch and the base, and the exhaust channel is communicated with the first buffer area and the second buffer area.
Through adopting above-mentioned scheme, can make the high-pressure gas in the run-on zone from the through, first buffer zone and second buffer zone can get into gas respectively like this, reduce the pressure in run-on zone greatly, and exhaust passage sets up here at perpendicular limit in addition, and gas runs from this position can not influence the installation of other parts of circuit breaker, can not produce other interferences yet, makes product simple structure reasonable, reduces the product volume.
The invention further provides that: the first buffer area is arranged at the corresponding position of an area formed by enclosing the straight edge, the vertical edge and the oblique edge of the arc starting plate, and the bottom of the first buffer area is inwards sunken.
By adopting the scheme, the first buffer area is scientifically arranged at the position, other parts are not arranged at the periphery of the position, the first buffer area can be arranged as large as possible, and the concave arrangement aims to increase the volume of the first buffer area and facilitate the arrangement of the exhaust channel.
The invention further provides that: the straight edge and the vertical edge of the arc striking plate are vertically arranged, long convex ribs are arranged at the positions, corresponding to the arc striking area, on the base and the middle seat, and the direction of the long convex ribs is approximate to that of the bevel edge.
Through adopting above-mentioned scheme, can increase creepage distance, the product is safer.
The invention further provides that: the middle seat is provided with a first arc-isolating convex rib above the long convex rib, and the base is provided with a second arc-isolating convex rib opposite to the first arc-isolating convex rib on the middle seat.
Through adopting above-mentioned scheme, make electric arc and gas can not walk the upper end of circuit breaker, because circuit breaker upper portion spare part is more, guarantee its security.
The final setting of the invention is as follows: the middle seat is provided with an L-shaped first baffle below and on one side of the arc extinguishing area, the base is provided with a second baffle oppositely inserted with the first baffle, the first baffle and the second baffle are oppositely inserted to form an arc isolating surrounding edge, a first exhaust through hole communicated with the outside is formed in the side face of the concave part of the first buffer area, and a second exhaust through hole communicated with the outside is formed in the side face of the second buffer area.
Through adopting above-mentioned scheme, wherein separate the arc surrounding edge and can be fine prevent that electric arc and gas from running out between the gap of casing, but discharge according to exhaust through-hole and surge chamber and exhaust through-hole class position of setting for, greatly increased product's security like this. First exhaust through-hole sets up the side at the depressed part of first buffer, makes like this separate between first exhaust through-hole and the run-on plate, can not influence the installation of run-on plate and the safety of product.
The invention will now be further described with reference to specific examples.
Drawings
FIG. 1 is a block diagram of an embodiment of an N-pole arc extinguishing device according to the present invention;
FIG. 2 is a block diagram of a base according to an embodiment of the present invention;
FIG. 3 is a block diagram of a seat in an embodiment of the present invention;
FIG. 4 is a structural diagram of an arc starting plate according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view showing the positional relationship between the first buffer area and the second buffer area according to the embodiment of the present invention;
FIG. 6 is a cross-sectional view of an embodiment of the present invention reflecting the relationship between a notch on a straight edge of a strike plate and a second buffer area;
FIG. 7 is a diagram showing the relationship between the first buffer area and the straight edge of the arc plate according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1-7, an N-pole arc extinguishing device of a circuit breaker includes an N-pole static contact 1, an N-pole moving contact 2, an arc striking plate 3, a middle base 4 and a base 5, where the N-pole static contact 1 includes a wiring portion, a contact portion and an arc striking portion, in an embodiment of the present invention, a slot is disposed on the middle base 4 or/and the base 5, the static contact 1 and the arc striking plate 3 are both disposed in the corresponding slot, the arc striking plate 3 includes a straight edge 31, a vertical edge 32 and a bevel edge 33, where the bevel edge 33 is inclined toward the straight edge 31, and an arc striking region 6 is formed between the bevel edge 33 and the arc striking portion of the N-pole static contact 1, a first buffer region 46 and a second buffer region 44 are respectively disposed on the middle base 4 and on two sides of the vertical edge 32, a notch 321 is disposed on one side of the vertical edge 32 close to the base 5, and an exhaust channel is formed between the notch 321 and the base 5, the exhaust passage communicates the first buffer zone 46 and the second buffer zone 44; in the above scheme, high-pressure gas in the arc striking area 6 can pass through the high-pressure gas, so that the first buffer area 46 and the second buffer area 44 can respectively enter gas, the pressure of the arc striking area 6 is greatly reduced, in addition, the exhaust passage is arranged on the vertical edge 32, the gas runs from the position, the installation of other parts of the circuit breaker cannot be influenced, other interference cannot be generated, the product structure is simple and reasonable, and the product volume is reduced.
In the embodiment of the present invention, the straight edge 31 and the vertical edge 32 of the arc striking plate 3 are vertically arranged, where the vertical direction may not be absolute vertical, and may be properly inclined within an allowable range, the base 5 and the middle seat 4 are provided with long ribs 51, 41 at positions corresponding to the arc striking area 6, and usually, a plurality of long ribs 51, 41 are provided, and the direction of the long ribs 51, 41 is substantially the same as the direction of the inclined edge 33. By adopting the scheme, the creepage distance can be increased, the product is safer, the long convex ribs 51 and 41 can generate gas, and the gas blowing is increased.
In the embodiment of the present invention, the first buffer area 46 is disposed at a position corresponding to a region surrounded by the straight edge 31, the vertical edge 32 and the oblique edge 33 of the arc ignition plate 3, and the bottom of the first buffer area 46 is recessed inwards to form a recessed portion 461; with the above-mentioned solution, the first buffer area 46 is scientifically disposed at the above-mentioned position, the periphery of the position has no other parts, in addition, the first buffer area 46 can be disposed as large as possible, the concave disposition is also for increasing the volume of the first buffer area 46, and in addition, the first exhaust through hole 462 is conveniently disposed. The middle seat 4 is provided with a first arc-isolating convex rib 42 above the long convex rib 41, and the base 5 is provided with a second arc-isolating convex rib 52 opposite to the first arc-isolating convex rib 42 on the middle seat 4. Through adopting above-mentioned scheme, make electric arc and gas can not walk the upper end of circuit breaker, because circuit breaker upper portion spare part is more, guarantee its security, first protruding muscle 42 of isolating arc and second protruding muscle 52 of isolating arc can contradict each other or press close to or the dislocation is inserted or is corresponded, first protruding muscle 42 of isolating arc and second protruding muscle 52 of isolating arc also can be many, and its purpose makes electric arc and gas can not walk the upper end of circuit breaker.
In the embodiment of the present invention, an L-shaped first baffle 43 is disposed on the middle seat 4 and below and on one side of the arc extinguishing area 6, a second baffle 53 inserted into the first baffle 43 is disposed on the base 5, the first baffle 43 and the second baffle 53 are inserted into each other to form an arc-isolating surrounding edge, where the insertion means that the two baffles are offset, a first exhaust hole 462 communicated with the outside is disposed on a side surface of the recessed portion 461 of the first buffer area 46, and a second exhaust hole 441 communicated with the outside is disposed on a side surface of the second buffer area 44; by adopting the scheme, the arc-isolating surrounding edge can well prevent the electric arc and the gas from escaping from the gap of the shell, and the electric arc and the gas are discharged according to the set exhaust through holes, the buffer areas 46 and 44, the exhaust through holes and the like, so that the safety of the product is greatly improved. The first exhaust through hole 462 is disposed at a side of the recess 461 of the first buffer area 46 such that the first exhaust through hole 462 is spaced apart from the arc ignition plate 3 without affecting the installation of the arc ignition plate and the safety of the product. Finally, it should be noted that the terms of the upper and lower positions in the present application document are described in the view relationship of fig. 1 in the present application document.
Claims (5)
1. The utility model provides a N utmost point arc control device of circuit breaker, including N utmost point static contact, N utmost point moving contact, run-on plate, well seat and base, N utmost point static contact including wiring portion, contact portion and run-on portion, well seat or \ and be provided with the draw-in groove on the base, static contact and run-on plate all set up in corresponding draw-in groove, its characterized in that: the arc striking plate comprises a straight edge, a vertical edge and a bevel edge, wherein the bevel edge is obliquely arranged towards one side of the straight edge, an arc striking area is formed between the bevel edge and an arc striking part of the N-pole static contact, a first buffer area and a second buffer area are respectively arranged on the middle seat and positioned on two sides of the vertical edge, a notch is formed in one side, close to the base, of the vertical edge, an exhaust channel is formed between the notch and the base, and the exhaust channel is communicated with the first buffer area and the second buffer area.
2. The N-pole arc extinguishing device of the circuit breaker according to claim 1, wherein: the first buffer area is arranged at the corresponding position of an area formed by enclosing the straight edge, the vertical edge and the oblique edge of the arc starting plate, and the bottom of the first buffer area is inwards sunken.
3. The N-pole arc extinguishing device of the circuit breaker according to claim 1 or 2, wherein: the straight edge and the vertical edge of the arc striking plate are vertically arranged, long convex ribs are arranged at the positions, corresponding to the arc striking area, on the base and the middle seat, and the direction of the long convex ribs is approximately the same as that of the bevel edge.
4. The N-pole arc extinguishing device of the circuit breaker according to claim 3, wherein: the middle seat is provided with a first arc-isolating convex rib above the long convex rib, and the base is provided with a second arc-isolating convex rib opposite to the first arc-isolating convex rib on the middle seat.
5. The N-pole arc extinguishing device of the circuit breaker according to claim 2, wherein: the middle seat is provided with an L-shaped first baffle below and on one side of the arc extinguishing area, the base is provided with a second baffle oppositely inserted with the first baffle, the first baffle and the second baffle are oppositely inserted to form an arc isolating surrounding edge, a first exhaust through hole communicated with the outside is formed in the side face of the concave part of the first buffer area, and a second exhaust through hole communicated with the outside is formed in the side face of the second buffer area.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011562471.3A CN112530765A (en) | 2020-12-25 | 2020-12-25 | N-pole arc extinguishing device of circuit breaker |
| PCT/CN2021/133620 WO2022135040A1 (en) | 2020-12-25 | 2021-11-26 | N-pole arc extinguishing device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011562471.3A CN112530765A (en) | 2020-12-25 | 2020-12-25 | N-pole arc extinguishing device of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112530765A true CN112530765A (en) | 2021-03-19 |
Family
ID=74976526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011562471.3A Pending CN112530765A (en) | 2020-12-25 | 2020-12-25 | N-pole arc extinguishing device of circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112530765A (en) |
| WO (1) | WO2022135040A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135040A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | N-pole arc extinguishing device of circuit breaker |
| WO2022135039A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | N-pole wiring structure for circuit breaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205231001U (en) * | 2015-10-22 | 2016-05-11 | 浙江正泰电器股份有限公司 | Miniature circuit breaker's neutral pole striking mechanism |
| CN205959932U (en) * | 2016-08-04 | 2017-02-15 | 浙江正泰电器股份有限公司 | Circuit breaker striking structure |
| DE102017204942B4 (en) * | 2017-03-23 | 2022-01-20 | Siemens Aktiengesellschaft | Electromechanical protective switching device |
| CN112530765A (en) * | 2020-12-25 | 2021-03-19 | 浙江奥来电器有限公司 | N-pole arc extinguishing device of circuit breaker |
| CN112530758A (en) * | 2020-12-25 | 2021-03-19 | 浙江奥来电器有限公司 | Circuit breaker |
-
2020
- 2020-12-25 CN CN202011562471.3A patent/CN112530765A/en active Pending
-
2021
- 2021-11-26 WO PCT/CN2021/133620 patent/WO2022135040A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135040A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | N-pole arc extinguishing device of circuit breaker |
| WO2022135039A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | N-pole wiring structure for circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022135040A1 (en) | 2022-06-30 |
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