CN219626581U - Circuit breaker with be favorable to electric arc transfer stationary contact - Google Patents
Circuit breaker with be favorable to electric arc transfer stationary contact Download PDFInfo
- Publication number
- CN219626581U CN219626581U CN202320642705.8U CN202320642705U CN219626581U CN 219626581 U CN219626581 U CN 219626581U CN 202320642705 U CN202320642705 U CN 202320642705U CN 219626581 U CN219626581 U CN 219626581U
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- Prior art keywords
- arc
- circuit breaker
- stationary contact
- transfer
- wall
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- 238000010891 electric arc Methods 0.000 title claims description 5
- 230000002349 favourable effect Effects 0.000 title description 2
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000004880 explosion Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A circuit breaker having a stationary contact that facilitates arc transfer. Mainly solves the problems that the bottom of the existing static contact is a plane, the arc is easy to stay, and the arc cannot be transferred well. The method is characterized in that: the arc extinguishing chamber comprises an arc inlet groove (41), the static contact comprises an arc striking piece (31) which is arranged towards the arc inlet groove, the surface of the arc striking piece is a smooth curved surface, and the tail end of the arc striking piece is of a structure with higher middle and lower two ends. The utility model provides a circuit breaker with a static contact which is beneficial to arc transfer, wherein an arc striking sheet is a curved surface, and the middle of the arc striking sheet is higher and the two ends of the arc striking sheet are lower, so that the arc transfer is facilitated, and the arc stay is reduced.
Description
Technical Field
The utility model relates to the field of circuit breakers, in particular to a circuit breaker with a fixed contact beneficial to arc transfer.
Background
A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time.
The circuit breaker is internally provided with a contact system, an action mechanism, an arc extinguishing system and the like, the conventional contact system comprises a moving contact and a fixed contact, the fixed contact is provided with a fixed contact, one end of the fixed contact is arranged in front of the arc extinguishing chamber and used for guiding an arc into the arc extinguishing chamber to be lengthened and extinguished, the bottom of the conventional fixed contact is a plane, the arc is easy to stay, and the arc cannot be transferred well.
Disclosure of Invention
In order to overcome the defects of the background technology, the utility model provides a circuit breaker with a static contact which is beneficial to arc transfer, and mainly solves the problems that the bottom of the current static contact is a plane, arc is easy to stay and arc cannot be transferred well.
The technical scheme adopted by the utility model is as follows:
the utility model provides a circuit breaker with do benefit to electric arc transfer stationary contact, includes the casing, be equipped with moving contact, stationary contact and explosion chamber in the casing, the moving contact with the stationary contact sets up relatively, the explosion chamber includes into the arc chute, the stationary contact includes the orientation advance the striking piece that the arc chute set up, the surface of striking piece is smooth curved surface, just the tail end of striking piece is the lower structure in middle higher both ends.
The two side surfaces of the arc striking piece are arc-shaped surfaces.
The inner wall of the shell is provided with a plurality of first sinking grooves which are arranged in parallel, the arc extinguishing chamber comprises a grid sheet, and the side wall of the grid sheet is arranged in the first sinking grooves.
The front side end face of the grid sheet is opposite to the inner wall of the first sinking groove.
The inner wall of the shell is also provided with a blocking wall, the blocking wall is arranged above the first sinking groove, and the front end face of the grid sheet is opposite to the blocking wall.
The grid piece side direction is equipped with the second heavy groove, the interior detachable of second heavy inslot is connected with the curb plate, the outside terminal surface of curb plate is less than the side direction terminal surface of grid piece.
The striking piece extends from bottom to top.
The beneficial effects of the utility model are as follows: the utility model provides a circuit breaker with a static contact which is beneficial to arc transfer, wherein an arc striking sheet is a curved surface, and the middle of the arc striking sheet is higher and the two ends of the arc striking sheet are lower, so that the arc transfer is facilitated, and the arc stay is reduced.
Drawings
Fig. 1 is an internal perspective view of an embodiment of the present utility model.
Fig. 2 is a partial perspective view of an embodiment of the present utility model.
Fig. 3 is a perspective view of an arc chute according to an embodiment of the present utility model.
FIG. 4 is a schematic cross-sectional view of one embodiment of the present utility model.
Fig. 5 is a partial perspective view of an embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings: as shown in the figure, the circuit breaker with do benefit to electric arc transfer stationary contact, including casing 1, be equipped with moving contact 2, stationary contact 3 and explosion chamber 4 in the casing, the moving contact with the stationary contact sets up relatively, the explosion chamber includes into arc chute 41, the stationary contact includes the orientation advance the striking piece 31 that the arc chute set up, the surface of striking piece is smooth curved surface, just the tail end of striking piece is the lower structure in middle higher both ends. The surface of the striking piece is a curved surface and is of a structure with lower two ends and higher middle, so that striking can be conducted in an arc extinguishing chamber through an arc inlet slot from the middle, and the arc transfer is facilitated by a relatively planar structure, and arc stay is reduced.
In this embodiment, as shown in the figure, two side surfaces of the arc striking plate are arc-shaped surfaces. The arc-shaped surface is more beneficial to arc transfer and has better use effect.
In this embodiment, as shown in the drawing, the inner wall of the housing is provided with a plurality of first sinking grooves 11 arranged in parallel, and the arc extinguishing chamber includes a grid 42, and the side wall of the grid is disposed in the first sinking grooves. Can play spacing effect to the explosion chamber, overall structure is more stable.
In this embodiment, as shown in the drawing, the front end surface of the grid plate is opposite to the inner wall of the first sink. Further increases the limit function.
In this embodiment, as shown in the drawing, the inner wall of the housing is further provided with a blocking wall 12, the blocking wall is disposed above the first sink, and the front end surface of the grid sheet is disposed opposite to the blocking wall. Further increases the limit function.
In this embodiment, as shown in the drawing, the grid plate is laterally provided with a second countersink 421, and a side plate 43 is detachably connected in the second countersink, and an external end surface of the side plate is lower than a lateral end surface of the grid plate. The outer end of the side plate is higher than the first sinking groove to achieve better positioning effect.
In this embodiment, the striking plate extends from bottom to top as shown.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.
Claims (7)
1. The utility model provides a circuit breaker with do benefit to electric arc transfer stationary contact, includes casing (1), be equipped with moving contact (2), stationary contact (3) and explosion chamber (4) in the casing, the moving contact with the stationary contact sets up its characterized in that relatively: the arc extinguishing chamber comprises an arc inlet groove (41), the static contact comprises an arc striking piece (31) which is arranged towards the arc inlet groove, the surface of the arc striking piece is a smooth curved surface, and the tail end of the arc striking piece is of a structure with higher middle and lower two ends.
2. A circuit breaker having a stationary contact for facilitating arc transfer as claimed in claim 1, wherein: the two side surfaces of the arc striking piece are arc-shaped surfaces.
3. A circuit breaker having a stationary contact for facilitating arc transfer as claimed in claim 1, wherein: the inner wall of the shell is provided with a plurality of first sinking grooves (11) which are arranged in parallel, the arc extinguishing chamber comprises a grid sheet (42), and the side wall of the grid sheet is arranged in the first sinking grooves.
4. A circuit breaker having a stationary contact for facilitating arc transfer as claimed in claim 3, wherein: the front side end face of the grid sheet is opposite to the inner wall of the first sinking groove.
5. A circuit breaker having a stationary contact for facilitating arc transfer as set forth in claim 4 wherein: the inner wall of the shell is also provided with a blocking wall (12), the blocking wall is arranged above the first sinking groove, and the front end face of the grid sheet is opposite to the blocking wall.
6. A circuit breaker having a stationary contact for facilitating arc transfer as set forth in claim 5 wherein: the grid piece side direction is equipped with second heavy groove (421), can dismantle in the second heavy groove and be connected with curb plate (43), the outside terminal surface of curb plate is less than the side direction terminal surface of grid piece.
7. A circuit breaker having a stationary contact for facilitating arc transfer as claimed in claim 1, wherein: the striking piece extends from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642705.8U CN219626581U (en) | 2023-03-28 | 2023-03-28 | Circuit breaker with be favorable to electric arc transfer stationary contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642705.8U CN219626581U (en) | 2023-03-28 | 2023-03-28 | Circuit breaker with be favorable to electric arc transfer stationary contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219626581U true CN219626581U (en) | 2023-09-01 |
Family
ID=87774029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320642705.8U Active CN219626581U (en) | 2023-03-28 | 2023-03-28 | Circuit breaker with be favorable to electric arc transfer stationary contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219626581U (en) |
-
2023
- 2023-03-28 CN CN202320642705.8U patent/CN219626581U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325600 No. 18, Sha Hung Road, North Bai Xiang Town, Yueqing, Wenzhou, Zhejiang. Patentee after: Zhejiang Chuangqi Electric Co.,Ltd. Address before: 325600 No. 18, Sha Hung Road, North Bai Xiang Town, Yueqing, Wenzhou, Zhejiang. Patentee before: ZHEJIANG CHUANGQI ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |