CN112635258A - N-pole wiring structure of circuit breaker - Google Patents
N-pole wiring structure of circuit breaker Download PDFInfo
- Publication number
- CN112635258A CN112635258A CN202011562359.XA CN202011562359A CN112635258A CN 112635258 A CN112635258 A CN 112635258A CN 202011562359 A CN202011562359 A CN 202011562359A CN 112635258 A CN112635258 A CN 112635258A
- Authority
- CN
- China
- Prior art keywords
- edge
- pole
- arc
- baffle
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003068 static effect Effects 0.000 claims abstract description 25
- 238000002679 ablation Methods 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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
Abstract
The invention relates to a circuit breaker, in particular to a connection mode of an N-pole lead in the circuit breaker. The invention adopts the following technical scheme: the utility model provides a N utmost point wiring structure of circuit breaker which characterized in that: the wiring portion of the N-pole static contact is in a straight strip shape, a clamping groove is formed in the middle base or/and the base, the wiring portion is arranged in the clamping groove, 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, the N-pole power supply inlet wire is connected to the end portion of the straight edge, and the second wire is connected to one end, close to the moving contact, of the vertical edge or the connection position of the vertical edge and the bevel edge. By adopting the scheme, the invention provides the circuit breaker which can improve the arc transfer speed, reduce the ablation of the arc and improve the breaking capacity.
Description
Technical Field
The invention relates to a circuit breaker, in particular to a connection mode of an N-pole lead in the circuit breaker.
Background
Because the standards of each country are different, the distribution box of some countries requires that the incoming line side of the N pole and the outgoing line side of the L pole N pole are arranged on the same side, otherwise, the user can not wire or the wiring is inconvenient when using, although the incoming line side of the N pole and the outgoing line side of the L pole are arranged on the same side, the current direction of a current loop is wrong, so that the movable contact can not be quickly separated, meanwhile, electric arcs can not be better separated from the movable contact and the static contact to burn out, and the phenomenon that the electric clearance and the creepage distance are insufficient is easily found due to the small contact area space, so that the verification failure after the product test is caused.
Disclosure of Invention
The invention overcomes the problems in the prior art, and provides a method for breaking the electric current, which can generate larger repulsive force on the moving contact no matter how the direction of the current changes, thereby better enabling the moving contact to move towards the repulsion direction, when the contact is repelled, an electric arc is generated between the fixed contact and the moving contact, the force changing direction of the electric arc is to move towards the direction of an arc striking part and an arc striking angle or between an arc striking plate and the arc striking, so that the electric arc moves rapidly under the action of the repulsive force, the electric arc transfer speed is improved, the ablation to the electric arc is reduced, and the breaking capacity is improved.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a N utmost point wiring structure 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, be connected with first wire on the tip of wiring portion, be connected with the second wire between N utmost point moving contact and the run-on plate, still connect N utmost point power inlet wire on the run-on plate, its characterized in that: the wiring portion of the N-pole static contact is in a straight strip shape, a clamping groove is formed in the middle base or/and the base, the wiring portion is arranged in the clamping groove, 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, the N-pole power supply inlet wire is connected to the end portion of the straight edge, and the second wire is connected to one end, close to the moving contact, of the vertical edge or the connection position of the vertical edge and the bevel edge.
By adopting the scheme, when the N-pole arc driven contact is transferred to the arc striking plate, a U-shaped current channel is formed between the N-pole power inlet wire and the arc striking plate, and the arc moves towards the elongation direction no matter how the current direction is according to the left-hand rule and the right-hand rule, so that the arc is extinguished favorably, and the breaking capacity is improved.
The invention further provides that: the straight edge and the vertical edge of the arc striking plate are vertically arranged.
By adopting the scheme, a U-shaped current channel is formed between the N-pole power inlet wire and the arc striking plate, and the electric arc moves towards the elongation direction, so that the electric arc is extinguished favorably, and the breaking capacity is improved.
The invention further provides that: the corresponding parts of the middle seat and the base, which are positioned in the arc striking area, are provided with convex ribs, and the arrangement direction of the convex ribs is the same as the arrangement direction of the bevel edge of the arc striking plate.
The base and the middle base are provided with convex ribs, and the purpose of increasing creepage distance and electric clearance is mainly achieved.
The invention further provides that: the arc ignition part of the N-pole static contact is arranged in an arched manner, an L-shaped first baffle is arranged on the middle seat and below and on one side of the arc extinguishing area, a second baffle which is oppositely inserted with the first baffle is arranged on the base, the first baffle and the second baffle are oppositely inserted to form an arc isolating surrounding edge, and an exhaust through hole is further formed in the bottom edge of the first baffle.
By adopting the technical scheme, the arc striking part of the N-pole static contact is arranged in an arched manner, so that electric arcs can be guided to move towards an arc striking area, the arc isolating surrounding edge plays a role in isolating the electric arcs, and the exhaust gas and the electric arcs which can be well exhausted through the exhaust through holes reduce the air pressure in the circuit breaker, prevent products from being cracked and protect the circuit breaker.
The present invention will be further described with reference to the following examples.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
fig. 2 is a structural diagram reflecting the closing of the N-pole moving contact and the N-pole fixed contact according to the embodiment of the present invention;
FIG. 3 is a block diagram of a base in accordance with an embodiment of the present invention;
FIG. 4 is a diagram of a mid-seat structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the current directions and the generated repulsive forces of the N-pole moving contact and the N-pole fixed contact according to the embodiment of the present invention;
fig. 6 is a schematic diagram of the current direction and the generated repulsive force of the arc ignition plate and the N-pole stationary contact according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1-4, an N-pole wiring structure 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 11, a contact portion 12 and an arc striking portion 13, the end of the wiring portion 11 is connected with a first wire 6, a second wire 7 is connected between the N-pole moving contact 2 and the arc striking plate 3, and the arc striking plate 3 is further connected with an N-pole power inlet wire 8, in the embodiment of the present invention, the wiring portion 11 of the N-pole static contact 1 is a straight bar, the middle base 4 or/and the base 5 is provided with a slot, the wiring portion 11 is disposed in the 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 one side of the straight edge 31, and an arc striking region is formed between the bevel edge 33 and the arc striking portion 13 of the N-pole static, the N-pole power inlet wire 8 is connected to the end of the straight edge 31, the second wire 7 is connected to one end of the vertical edge 32 close to the moving contact 2 or the joint of the vertical edge 32 and the inclined edge 33, current flows through the N-pole static contact 1 from the second wire 7 to the N-pole moving contact 2, how the current direction of the N-pole moving contact 2 and the N-pole static contact 1 changes at the moment, the N-pole moving contact 2 and the N-pole static contact 1 are arranged in a U shape, the N-pole moving contact 2 and the N-pole static contact 1 are stressed in the separation direction, which is beneficial to quick flicking of the N-pole moving contact 2, contact burning loss is reduced, the electrical life is prolonged, and the possibility of fusion welding of the contacts is eliminated, as shown in fig. 5, and meanwhile. By adopting the scheme, when the N-pole arc driven contact 2 is transferred to the arc striking plate 3, a U-shaped current channel is formed between the N-pole power inlet wire 8 and the arc striking plate 3 according to the left-hand rule and the right-hand rule, and the arc moves towards the elongation direction no matter how the current direction is, namely moves towards the arc striking area, so that the arc is extinguished favorably, and the breaking capacity is improved, as shown in the attached figure 6.
In the embodiment of the present invention, the straight edge 31 and the vertical edge 32 of the arc ignition plate 3 are vertically disposed. By adopting the scheme, a U-shaped current channel is formed between the N-pole power inlet wire 8 and the arc striking plate 3, and the electric arc moves towards the elongation direction, so that the electric arc is extinguished favorably, and the breaking capacity is improved. The middle seat 4 and the base 5 are provided with convex ribs 41 and 51 at corresponding parts of the arc striking area, the arrangement direction of the convex ribs 41 and 51 is the same as that of the inclined edge 33 of the arc striking plate 3, the convex ribs are approximately the same as that of the inclined edge 33, and the convex ribs are not required to be the same, so that the purposes of increasing creepage distance and electric clearance are mainly achieved, gas can be generated when the electric arc passes through, the electric arc is cooled, the pressure intensity is increased, the gas discharge speed is increased, and the breaking capacity is improved.
In the embodiment of the present invention, the arc striking portion 13 of the N-pole static contact 1 is arranged in an arched manner, the L-shaped first baffle 42 is arranged on the middle seat 4 and below and on one side of the arc extinguishing area, the second baffle 52 inserted into the first baffle 42 is arranged on the base 5, the first baffle 42 and the second baffle 52 are inserted into each other to form an arc-isolating surrounding edge, and the bottom edge of the first baffle 42 is further provided with an exhaust through hole 421. By adopting the technical scheme, the arc striking part 13 of the N-pole static contact 1 is arranged in an arch shape, so that the electric arc can be guided to move to an arc striking area, the arc isolating surrounding edge plays a role in isolating the electric arc, the exhaust through hole 421 can well exhaust gas and the electric arc, and the air pressure in the circuit breaker is reduced.
Claims (5)
1. The utility model provides a N utmost point wiring structure 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, be connected with first wire on the tip of wiring portion, be connected with the second wire between N utmost point moving contact and the run-on plate, still connect N utmost point power inlet wire on the run-on plate, its characterized in that: the wiring portion of the N-pole static contact is in a straight strip shape, a clamping groove is formed in the middle base or/and the base, the wiring portion is arranged in the clamping groove, 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, the N-pole power supply inlet wire is connected to the end portion of the straight edge, and the second wire is connected to one end, close to the moving contact, of the vertical edge or the connection position of the vertical edge and the bevel edge.
2. The N-pole wiring structure of a circuit breaker according to claim 1, wherein: the straight edge and the vertical edge of the arc striking plate are vertically arranged.
3. The N-pole wiring structure of a circuit breaker according to claim 1 or 2, characterized in that: the corresponding parts of the middle seat and the base, which are positioned in the arc striking area, are provided with convex ribs, and the arrangement direction of the convex ribs is the same as the arrangement direction of the bevel edge of the arc striking plate.
4. The N-pole wiring structure of a circuit breaker according to claim 1 or 2, characterized in that: the arc ignition part of the N-pole static contact is arranged in an arched manner, an L-shaped first baffle is arranged on the middle seat and below and on one side of the arc extinguishing area, a second baffle which is oppositely inserted with the first baffle is arranged on the base, the first baffle and the second baffle are oppositely inserted to form an arc isolating surrounding edge, and an exhaust through hole is further formed in the bottom edge of the first baffle.
5. The N-pole wiring structure of a circuit breaker according to claim 3, wherein: the arc ignition part of the N-pole static contact is arranged in an arched manner, an L-shaped first baffle is arranged on the middle seat and below and on one side of the arc extinguishing area, a second baffle which is oppositely inserted with the first baffle is arranged on the base, the first baffle and the second baffle are oppositely inserted to form an arc isolating surrounding edge, and an exhaust through hole is further formed in the bottom edge of the first baffle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011562359.XA CN112635258A (en) | 2020-12-25 | 2020-12-25 | N-pole wiring structure of circuit breaker |
| PCT/CN2021/133618 WO2022135039A1 (en) | 2020-12-25 | 2021-11-26 | N-pole wiring structure for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011562359.XA CN112635258A (en) | 2020-12-25 | 2020-12-25 | N-pole wiring structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112635258A true CN112635258A (en) | 2021-04-09 |
Family
ID=75324897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011562359.XA Pending CN112635258A (en) | 2020-12-25 | 2020-12-25 | N-pole wiring structure of circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112635258A (en) |
| WO (1) | WO2022135039A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|---|
| ATE121216T1 (en) * | 1992-05-13 | 1995-04-15 | Hager Electro | ASSEMBLY METHOD FOR PHASE-NEUTRAL CIRCUIT BREAKERS AND CIRCUIT BREAKERS OF THIS TYPE. |
| CN208352246U (en) * | 2018-05-16 | 2019-01-08 | 德力西电气有限公司 | A kind of arc quenching system of miniature circuit breaker |
| CN212136386U (en) * | 2020-05-09 | 2020-12-11 | 温州凯信电气有限公司 | Arc extinguishing system of circuit breaker |
| CN112635258A (en) * | 2020-12-25 | 2021-04-09 | 浙江奥来电器有限公司 | N-pole wiring structure of circuit breaker |
| 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 |
-
2020
- 2020-12-25 CN CN202011562359.XA patent/CN112635258A/en active Pending
-
2021
- 2021-11-26 WO PCT/CN2021/133618 patent/WO2022135039A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| WO2022135039A1 (en) | 2022-06-30 |
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