CN217768255U - Small-sized circuit breaker - Google Patents
Small-sized circuit breaker Download PDFInfo
- Publication number
- CN217768255U CN217768255U CN202222050640.6U CN202222050640U CN217768255U CN 217768255 U CN217768255 U CN 217768255U CN 202222050640 U CN202222050640 U CN 202222050640U CN 217768255 U CN217768255 U CN 217768255U
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- pedestal
- joint
- epitheca
- drain pan
- circuit breaker
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Abstract
The utility model relates to a miniature circuit breaker, including casing, operating device, explosion chamber, moving contact, static contact, electromagnetism release, two binding post, the casing includes the pedestal, sets up drain pan, the epitheca of setting on the pedestal opposite side on pedestal one side, two binding post set up respectively on the both ends of pedestal, the pedestal both sides on correspond two binding post's wiring screw punishment and do not be provided with the joint groove, the joint inslot be provided with respectively with drain pan, epitheca two trapezoidal fixture blocks of matched with, drain pan, epitheca on be provided with respectively with joint groove matched with joint board, the joint board on be provided with the card hole with trapezoidal fixture block matched with, card hole block on trapezoidal joint block, and constitute the joint cooperation of pedestal and drain pan, epitheca. The utility model has the advantages of simple structure, stable performance, reliable performance, convenient assembly and good arc extinguishing effect.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to miniature circuit breaker.
Background
The miniature circuit breaker is also called a miniature circuit breaker, is suitable for overload and short-circuit protection of a line with the rated voltage of alternating current 50/60Hz of 230/400V and the rated current of not more than 125A, and can also be used for infrequent operation and conversion of the line under normal conditions. The miniature circuit breaker is mainly used in various places such as industrial, commercial, high-rise and civil houses. The structural design of the existing miniature circuit breaker is unreasonable, and when a wiring screw is screwed down, a shell of the miniature circuit breaker bears large torsion and is easily expanded. And the miniature circuit breaker also has the defects of complex structure, unreliable performance, inconvenient assembly and poor arc extinguishing effect.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance is reliable, the assembly is convenient, the effectual miniature circuit breaker of arc extinguishing.
In order to achieve the above object, the utility model discloses a miniature circuit breaker, including casing, operating device, explosion chamber, with operating device linkage complex moving contact, with moving contact matched with static contact, electromagnetism release, two binding post, the casing include the pedestal, set up drain pan on pedestal one side, set up the epitheca on the pedestal opposite side, two binding post set up respectively on the both ends of pedestal, the pedestal both sides on correspond two binding post's wiring screw punishment and do not be provided with the joint groove, the joint inslot be provided with respectively with drain pan, epitheca matched with two trapezoidal fixture blocks, drain pan, epitheca on be provided with respectively with joint groove matched with joint board, the joint board on be provided with the card hole with trapezoidal fixture block matched with, the card hole block on trapezoidal joint block, and constitute the joint cooperation of pedestal and drain pan, epitheca.
The beneficial effect of above-mentioned structure is: the clamping plates are embedded in the clamping grooves of the base body and buckled with the trapezoidal clamping blocks in the clamping grooves, so that the shell with the structural design can bear large torsion, and when the screw of the wiring terminal is screwed down, the shell cannot expand due to the large torsion, and the working reliability of the miniature circuit breaker is improved. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and good arc extinguishing effect.
Particularly, one end of the static contact is provided with an arc striking angle, and one end of the arc striking angle bends and extends into the arc extinguishing chamber. The arc striking angle can lead the electric arc of the static contact into the arc extinguishing chamber quickly, thereby being beneficial to improving the arc extinguishing effect of the miniature circuit breaker.
Particularly, an arc striking plate is arranged at one side of the seat body corresponding to the arc striking angle, one end of the arc striking plate is connected to the arc striking angle, and the other end of the arc striking plate extends above the arc extinguishing chamber. The arc striking plate can lead the residual electric arc on the arc striking angle into the arc extinguishing chamber, thereby enhancing the arc extinguishing effect.
Particularly, the other end of the run-on plate is provided with a bending part matched with the run-on angle, and the bending part is attached in the run-on angle and forms clamping fit of the run-on plate and the run-on angle. The arc striking plate and the arc striking angle are connected in a clamping matching mode, so that the assembly efficiency of the miniature circuit breaker is improved.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention.
Fig. 2 is a front view of the internal structure of the embodiment of the present invention.
Detailed Description
As shown in fig. 1-2, an embodiment of the present invention is a miniature circuit breaker, including casing 10, operating device 20, explosion chamber 21, moving contact 22 with operating device 20 linkage complex, static contact 23 with moving contact 22 matched with, electromagnetic trip 24, two binding post 25, casing 10 include pedestal 11, set up drain pan 12 on pedestal 11 one side, set up epitheca 13 on pedestal 11 opposite side, two binding post 25 set up respectively on the both ends of pedestal 11, pedestal 11 both sides on correspond two binding post 25's wiring screw 251 punishment and be provided with joint groove 111 respectively, joint groove 111 in be provided with respectively with drain pan 12, epitheca 13 matched with two trapezoidal fixture blocks 112, drain pan 12, epitheca 13 on be provided with respectively with joint board 100 with joint groove 111 matched with, joint board 100 on be provided with the card hole 1000 with trapezoidal fixture block 112 matched with, card hole 1000 block on trapezoidal joint 112 block, and constitute the joint cooperation of drain pan 12, epitheca 13. One end of the fixed contact 23 is provided with an arc starting angle 231, and one end of the arc starting angle 23 is bent and extends into the arc extinguishing chamber 21. The arc striking angle can rapidly introduce the electric arc of the static contact into the arc extinguishing chamber, thereby being beneficial to improving the arc extinguishing effect of the miniature circuit breaker. An arc striking plate 26 is arranged in the base body 11 at one side corresponding to the arc striking angle 231, one end of the arc striking plate 26 is connected to the arc striking angle 231, and the other end of the arc striking plate 26 extends above the arc extinguishing chamber 21. The arc striking plate can lead the residual electric arc on the arc striking angle into the arc extinguishing chamber, thereby enhancing the arc extinguishing effect. The other end of run-on plate 26 have with run-on angle 231 matched with portion 261 of bending, portion 261 of bending laminate in run-on angle 231, and constitute the joint cooperation of run-on plate 26 and run-on angle 231. The arc striking plate and the arc striking angle are connected in a clamping matching mode, so that the assembly efficiency of the miniature circuit breaker is improved.
The clamping plates are embedded in the clamping grooves of the base body and buckled with the trapezoidal clamping blocks in the clamping grooves, so that the shell with the structural design can bear large torsion, and when the screw of the wiring terminal is screwed down, the shell cannot expand due to the large torsion, and the working reliability of the miniature circuit breaker is improved. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and good arc extinguishing effect.
Claims (4)
1. The utility model provides a miniature circuit breaker, includes casing, operating device, explosion chamber, moves contact, the static contact that matches with the moving contact, electromagnetism release, two binding post, its characterized in that with operating device linkage complex: the casing include the pedestal, set up drain pan, the epitheca of setting on the pedestal opposite side on pedestal one side, two binding post set up respectively on the both ends of pedestal, the pedestal both sides on correspond two binding post's wiring screw punishment and do not be provided with the joint groove, the joint inslot be provided with respectively with drain pan, epitheca matched with two trapezoidal fixture blocks, drain pan, epitheca on be provided with respectively with joint groove matched with joint board, the joint board on be provided with the card hole with trapezoidal fixture block matched with, the card hole block on trapezoidal joint piece, and constitute the joint cooperation of pedestal and drain pan, epitheca.
2. A miniature circuit breaker according to claim 1, wherein: one end of the static contact is provided with an arc striking angle, and one end of the arc striking angle bends and extends into the arc extinguishing chamber.
3. A miniature circuit breaker according to claim 2, wherein: the base body is internally provided with an arc striking plate corresponding to one side of the arc striking angle, one end of the arc striking plate is connected to the arc striking angle, and the other end of the arc striking plate extends to the upper part of the arc extinguishing chamber.
4. A miniature circuit breaker according to claim 3, wherein: the other end of the run-on plate is provided with a bending part matched with the run-on angle, the bending part is attached in the run-on angle and forms the clamping matching of the run-on plate and the run-on angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222050640.6U CN217768255U (en) | 2022-08-05 | 2022-08-05 | Small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222050640.6U CN217768255U (en) | 2022-08-05 | 2022-08-05 | Small-sized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217768255U true CN217768255U (en) | 2022-11-08 |
Family
ID=83878534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222050640.6U Active CN217768255U (en) | 2022-08-05 | 2022-08-05 | Small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217768255U (en) |
-
2022
- 2022-08-05 CN CN202222050640.6U patent/CN217768255U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |