CN217114267U - Electronic molded case circuit breaker - Google Patents
Electronic molded case circuit breaker Download PDFInfo
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- CN217114267U CN217114267U CN202220818791.9U CN202220818791U CN217114267U CN 217114267 U CN217114267 U CN 217114267U CN 202220818791 U CN202220818791 U CN 202220818791U CN 217114267 U CN217114267 U CN 217114267U
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- arc extinguishing
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Abstract
The utility model relates to an electronic type moulded case circuit breaker, including base, upper cover, face lid, operating device, with operating device matched with contact arc extinguishing module, contact arc extinguishing module includes contact box, contact subassembly, two arc extinguishing chamber subassemblies, the contact subassembly including rotate set up in the contact box contact pivot, with contact pivot linkage complex moving contact, set up two static contacts in the contact box respectively corresponding the both ends punishment of moving contact, two sets of arc extinguishing chamber subassemblies set up respectively on two static contacts, the symmetry is provided with two moving contact round pin axles in the contact pivot, two moving contact round pin axles cooperate with the operating device linkage, and be provided with insulation support between two moving contact round pin axles and the contact pivot, the both sides of contact pivot on be provided with a baffle respectively. The utility model has the advantages of simple structure, stable performance, reliability, convenient assembly and long service life.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to electronic type moulded case circuit breaker.
Background
At present, the electronic molded case circuit breaker is used for the purpose of infrequent conversion and motor protection in a circuit with 50Hz alternating current, 690V rated working voltage and 1250A rated current. The circuit breaker has the functions of overload long delay inverse time limit, short circuit short delay fixed time limit, short circuit instant and under-voltage protection, and can protect circuits and power supply equipment from being damaged. The existing electronic molded case circuit breaker is unreasonable in structural design, cannot be assembled in a modularization mode, is relatively complex to assemble, and wastes time and labor. And the electronic molded case circuit breaker has the defects of complex structure, unreliable performance, inconvenient assembly and short service life.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, dependable performance, convenient, the long service life's of assembly electronic type moulded case circuit breaker.
In order to achieve the purpose, the utility model adopts an electronic molded case circuit breaker, which comprises a base, an upper cover, a surface cover, an operating mechanism and a contact arc extinguishing module matched with the operating mechanism, the contact arc extinguishing module comprises a contact box, a contact assembly arranged in the contact box, and two arc extinguishing chamber assemblies respectively arranged in the contact box, the contact assembly comprises a contact rotating shaft which is rotatably arranged in the contact box, a moving contact which is in linkage fit with the contact rotating shaft, and two static contacts which are respectively arranged in the contact box corresponding to the two ends of the moving contact, the two groups of arc extinguishing chamber components are respectively arranged on two static contacts, two moving contact pin shafts are symmetrically arranged on the contact rotating shaft and are in linkage fit with the operating mechanism, and an insulating sleeve is arranged between the two moving contact pin shafts and the contact rotating shaft, and two sides of the contact rotating shaft are respectively provided with a partition plate.
The beneficial effect of above-mentioned structure is: the contact assembly and the arc extinguishing chamber assembly are arranged in the contact box, modular structural design is adopted, modular assembly of the contact arc extinguishing module can be achieved, assembly is more convenient, and the insulating sleeve is arranged between the moving contact pin and the contact rotating shaft, so that the electrical insulating property of the contact assembly is better, the service life of the contact assembly is longer, and the improvement of the working reliability of the electronic molded case circuit breaker is facilitated. Therefore, the electronic molded case circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and long service life.
Particularly, the arc extinguish chamber assembly comprises an arc striking plate correspondingly arranged on the static contact and an arc extinguish chamber arranged on the arc striking plate, wherein a clamping groove is arranged at a static contact point corresponding to the static contact on one end of the arc striking plate, the clamping groove is clamped on the static contact, and a magnetic conductive plate is arranged below the static contact on the static contact. The arc striking piece can be introduced into the arc extinguishing chamber with the electric arc on the stationary contact fast, and the magnetic conduction piece can play the magnetic blow effect, can realize extinguishing fast of electric arc to be favorable to improving the arc extinguishing effect of this explosion chamber subassembly.
Particularly, the arc-isolating plates are arranged on the arc-extinguishing chamber corresponding to two sides of the moving contact respectively, clamping grooves are formed in the arc-isolating plates and clamped on arc-extinguishing grids of the arc-extinguishing chamber, and the arc-isolating plates are in clamping fit with the arc-extinguishing chamber. The flash barrier can play the flash barrier effect, can guarantee that electric arc can extinguish in the explosion chamber, is favorable to strengthening the arc extinguishing effect, and flash barrier and explosion chamber adopt joint cooperation mode assembly, and it is more convenient to assemble.
Drawings
Fig. 1 is a cross-sectional view of an embodiment of the present invention.
Fig. 2 is a perspective view of a contact arc extinguishing module according to an embodiment of the present invention.
Fig. 3 is an internal structure diagram of a contact arc extinguishing module according to an embodiment of the present invention.
Fig. 4 is a perspective view of a static contact according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, an embodiment of the present invention is an electronic molded case circuit breaker, including a base 10, an upper cover 11, a face cover 12, an operating mechanism 13, and a contact arc extinguishing module 20 matched with the operating mechanism 13, where the contact arc extinguishing module 20 includes a contact box 21, a contact assembly 22 disposed in the contact box 21, and two arc extinguishing chamber assemblies 23 respectively disposed in the contact box 22, the contact assembly 22 includes a contact rotating shaft 221 rotatably disposed in the contact box 21, a moving contact 222 in linkage fit with the contact rotating shaft 221, and two stationary contacts 223 respectively disposed in the contact box 21 corresponding to two ends of the moving contact 222, the contact box 21 includes a box body 211 and a cover plate 212 disposed on the box body 211, the two arc extinguishing chamber assemblies 23 are respectively disposed on the two stationary contacts 223, the contact rotating shaft 221 is symmetrically provided with two moving contact pins 224, the two moving contact pins 224 are in linkage fit with the operating mechanism 13, an insulating sleeve 225 is arranged between the two moving contact pins 224 and the contact rotating shaft 221, and two sides of the contact rotating shaft 221 are respectively provided with a partition 226.
As shown in fig. 3 and 4, the arc extinguish chamber assembly 23 includes an arc striking plate 231 correspondingly disposed on the fixed contact 223, and an arc extinguish chamber 232 disposed on the arc striking plate 231, a clamping groove 2311 is disposed on one end of the arc striking plate 231 and corresponds to a fixed contact 2231 of the fixed contact 223, the clamping groove 2311 is clamped on the fixed contact 2231, and a magnetic conductive plate 233 is disposed on the fixed contact 223 and corresponds to a lower portion of the fixed contact 2231. The arc striking piece can be introduced into the arc extinguishing chamber with the electric arc on the stationary contact fast, and the magnetic conduction piece can play the magnetic blow effect, can realize extinguishing fast of electric arc to be favorable to improving the arc extinguishing effect of this explosion chamber subassembly. The arc extinguishing chamber 232 is provided with an arc isolating plate 234 corresponding to two sides of the moving contact 2221 of the moving contact 222, the arc isolating plate 234 is provided with a clamping groove 2341, and the clamping groove 2341 is clamped on the arc extinguishing plate 2321 of the arc extinguishing chamber 232 and forms clamping matching of the arc isolating plate and the arc extinguishing chamber. The flash barrier can play the flash barrier effect, can guarantee that electric arc can extinguish in the explosion chamber, is favorable to strengthening the arc extinguishing effect, and flash barrier and explosion chamber adopt joint cooperation mode assembly, and it is more convenient to assemble.
The contact assembly and the arc extinguishing chamber assembly are arranged in the contact box, modular structural design is adopted, modular assembly of the contact arc extinguishing module can be achieved, assembly is more convenient, and the insulating sleeve is arranged between the moving contact pin and the contact rotating shaft, so that the electrical insulating property of the contact assembly is better, the service life of the contact assembly is longer, and the improvement of the working reliability of the electronic molded case circuit breaker is facilitated. Therefore, the electronic molded case circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly and long service life.
Claims (3)
1. The utility model provides an electronic type moulded case circuit breaker, includes base, upper cover, face lid, operating device, with operating device matched with contact arc extinguishing module, its characterized in that: the contact arc extinguishing module comprises a contact box, contact components arranged in the contact box and two arc extinguishing chamber components arranged in the contact box respectively, wherein the contact components comprise contact rotating shafts arranged in the contact box in a rotating manner, moving contacts matched with the contact rotating shafts in a linkage manner and two static contacts arranged in the contact box respectively corresponding to the two ends of the moving contacts, the two groups of arc extinguishing chamber components are arranged on the two static contacts respectively, the contact rotating shafts are symmetrically provided with two moving contact pin shafts, the two moving contact pin shafts are matched with an operating mechanism in a linkage manner, insulating sleeves are arranged between the two moving contact pin shafts and the contact rotating shafts, and two partition plates are arranged on two sides of the contact rotating shafts respectively.
2. The electronic molded case circuit breaker of claim 1, wherein: the arc extinguish chamber component comprises an arc striking plate correspondingly arranged on the static contact and an arc extinguish chamber arranged on the arc striking plate, wherein a clamping groove is arranged at a static contact point corresponding to the static contact on one end of the arc striking plate, the clamping groove is clamped on the static contact, and a magnetic conductive plate is arranged below the static contact on the static contact.
3. The electronic molded case circuit breaker according to claim 2, wherein: the arc extinguishing chamber on correspond the movable contact both sides punishment of moving contact and be provided with a flash barrier respectively, the flash barrier on be provided with the joint groove, joint groove block on the arc extinguishing of arc extinguishing chamber cuts the piece, and constitute the joint cooperation of flash barrier and arc extinguishing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220818791.9U CN217114267U (en) | 2022-04-11 | 2022-04-11 | Electronic molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220818791.9U CN217114267U (en) | 2022-04-11 | 2022-04-11 | Electronic molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217114267U true CN217114267U (en) | 2022-08-02 |
Family
ID=82580883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220818791.9U Active CN217114267U (en) | 2022-04-11 | 2022-04-11 | Electronic molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217114267U (en) |
-
2022
- 2022-04-11 CN CN202220818791.9U patent/CN217114267U/en active Active
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| GR01 | Patent grant |