CN219435783U - Plastic case circuit breaker - Google Patents
Plastic case circuit breaker Download PDFInfo
- Publication number
- CN219435783U CN219435783U CN202320348263.6U CN202320348263U CN219435783U CN 219435783 U CN219435783 U CN 219435783U CN 202320348263 U CN202320348263 U CN 202320348263U CN 219435783 U CN219435783 U CN 219435783U
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- base
- circuit breaker
- wiring
- metering
- main circuit
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Abstract
The utility model relates to a molded case circuit breaker, which comprises a base, an upper cover, a bottom plate, an operating mechanism, a contact system, an arc extinguishing system and three thermomagnetic tripping mechanisms, wherein a metering transformer module is arranged in the base, the metering transformer module comprises a main circuit board arranged on the lower end face of the base, three metering transformers respectively inserted on the main circuit board, three conductive plates respectively arranged on the three thermomagnetic tripping mechanisms and three wiring boards, one ends of the three wiring boards respectively penetrate through holes of the three metering transformers and are respectively connected to the three conductive plates, the other ends of the three wiring boards are respectively provided with wiring parts extending out of the base, and the wiring parts of the three wiring boards are respectively provided with a wiring bolt. The utility model has the advantages of simple structure, stable and reliable performance and convenient assembly.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a molded case circuit breaker.
Background
At present, a molded case circuit breaker is a common protection electrical appliance, has the functions of switching on and off load current and overload and short-circuit protection on the load current, and is widely applied to overload and short-circuit protection of various power distribution systems and motors. Along with the development of the smart power grid, from a power station to a terminal, the intellectualization is a development flow which can not fall off in each link. As an intelligent circuit breaker for controlling and protecting a low-voltage distribution network, the intelligent circuit breaker integrates functions of metering, control, communication and the like. The existing metering transformer and wiring board of the intelligent circuit breaker cannot be integrated and modularized, modularized assembly cannot be realized, assembly is complex, and time and labor are wasted.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a molded case circuit breaker which is simple in structure, stable and reliable in performance and convenient to assemble.
In order to achieve the above purpose, the utility model adopts a molded case circuit breaker, which comprises a base, an upper cover, a bottom plate, an operating mechanism, a contact system, an arc extinguishing system and three thermomagnetic tripping mechanisms, wherein a metering transformer module is arranged in the base, the metering transformer module comprises a main circuit board arranged on the lower end surface of the base, three metering transformers respectively spliced on the main circuit board, three conductive plates respectively arranged on the three thermomagnetic tripping mechanisms and three wiring boards, one ends of the three wiring boards respectively penetrate through holes of the three metering transformers and are respectively connected to the three conductive plates, the other ends of the three wiring boards are respectively provided with wiring parts extending outside the base, and the wiring parts of the three wiring boards are respectively provided with a wiring bolt.
The beneficial effects of the structure are as follows: the wiring board is connected to the thermomagnetic tripping mechanism through the conducting plate, so that the assembly of the metering transformer and the wiring board is facilitated, the three wiring boards, the three metering transformers and the main circuit board are integrated and modularized, and the modularized assembly of the metering transformer module and the thermomagnetic tripping mechanism can be realized, and the assembly efficiency is higher. Therefore, the plastic shell circuit breaker has the advantages of simple structure, stable and reliable performance and convenience in assembly.
Particularly, a pin header is respectively arranged on the three metering transformers, and the pins of the three metering transformers are respectively inserted into the main circuit board. The metering transformer is inserted on the main circuit board through the pin header, so that the assembly of the metering transformer and the main circuit board is convenient, and the assembly is more convenient.
Specifically, one side of each of the three measuring transformers is provided with an elastic clamping hook, the base is provided with a clamping groove which is matched with the elastic clamping hooks, and the elastic clamping hooks are clamped in the clamping grooves and form clamping fit between the three measuring transformers and the base. The metering transformer is connected with the base in a clamping fit mode, so that the assembly of the metering transformer and the base is convenient, and the assembly is more convenient.
Particularly, the base is provided with screws corresponding to the wiring parts of the three wiring boards respectively, the screws penetrate through the base and are connected to the wiring parts, and the base is provided with an insulating cover separated between the screws and the main circuit board. The insulating cover can avoid exposing the screw, and the insulativity is better, is favorable to improving the security performance of this moulded case circuit breaker.
Particularly, the base on be provided with insulating cover assorted joint groove, the joint inslot be provided with the joint lug, the insulating cover on be provided with the constant head tank, the insulating cover set up in the joint groove, the joint lug block in the constant head tank, and constitute the joint cooperation of insulating cover and base. The insulating cover is connected with the base in a clamping fit mode, so that the insulating cover and the base are convenient to assemble, and the insulating cover is convenient to assemble.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of an embodiment of the present utility model.
Fig. 3 is a first perspective exploded view of an embodiment of the present utility model.
Fig. 4 is an exploded view of a second view of an embodiment of the present utility model.
Fig. 5 is an assembly diagram of a metering transformer and a base according to an embodiment of the present utility model.
Detailed Description
As shown in fig. 1 to 5, an embodiment of the present utility model is a molded case circuit breaker, including a base 10, an upper cover 11, a bottom plate 12, an operating mechanism 13, a contact system 14, an arc extinguishing system 15, and three thermo-magnetic trip mechanisms 16, wherein a metering transformer module 20 is disposed in the base 10, the metering transformer module 20 includes a main circuit board 21 disposed on a lower end surface of the base 10, three metering transformers 22 respectively plugged onto the main circuit board 21, three conductive plates 23 respectively disposed on the three thermo-magnetic trip mechanisms 16, and three wiring boards 24, one ends of the three wiring boards 24 respectively pass through holes of the three metering transformers 22 and are respectively connected to the three conductive plates 23, and the other ends of the three wiring boards 24 are respectively provided with wiring portions 241 extending outside the base 10, and the wiring portions 241 of the three wiring boards 24 are respectively provided with a wiring bolt 242.
As shown in fig. 3 to 5, each of the three measuring transformers 22 is provided with a pin 221, and the pins 221 on the three measuring transformers 22 are respectively inserted into the main circuit board 21. The metering transformer is inserted on the main circuit board through the pin header, so that the assembly of the metering transformer and the main circuit board is convenient, and the assembly is more convenient. The three measuring transformers 22 are respectively provided with an elastic clamping hook 222 on one side, the base 10 is provided with a clamping groove 101 which is matched with the elastic clamping hook 222, and the elastic clamping hook 222 is clamped in the clamping groove 101 to form clamping fit between the three measuring transformers 22 and the base 10. The metering transformer is connected with the base in a clamping fit mode, so that the assembly of the metering transformer and the base is convenient, and the assembly is more convenient.
As shown in fig. 2 and 4, the base 10 is provided with screws 102 corresponding to the wire connection portions 241 of the three wire connection plates 24, the screws 102 penetrate through the base 10 and are connected to the wire connection portions 241, and the base 10 is provided with an insulating cover 17 separated between the screws 102 and the main circuit board 21. The insulating cover can avoid exposing the screw, and the insulativity is better, is favorable to improving the security performance of this moulded case circuit breaker. The base 10 on be provided with insulating cover 17 assorted joint groove 103, joint inslot 103 be provided with joint lug 104, insulating cover 17 on be provided with constant head tank 171, insulating cover 17 set up in joint groove 103, joint lug 104 block in constant head tank 171, and constitute the joint cooperation of insulating cover 17 and base 10. The insulating cover is connected with the base in a clamping fit mode, so that the insulating cover and the base are convenient to assemble, and the insulating cover is convenient to assemble.
The wiring board is connected to the thermomagnetic tripping mechanism through the conducting plate, so that the assembly of the metering transformer and the wiring board is facilitated, the three wiring boards, the three metering transformers and the main circuit board are integrated and modularized, and the modularized assembly of the metering transformer module and the thermomagnetic tripping mechanism can be realized, and the assembly efficiency is higher. Therefore, the plastic shell circuit breaker has the advantages of simple structure, stable and reliable performance and convenience in assembly.
Claims (5)
1. The utility model provides a moulded case circuit breaker, includes base, upper cover, bottom plate, operating device, contact system, arc extinguishing system, three thermomagnetic tripping device, its characterized in that: the base in be provided with the measurement mutual-inductor module, the measurement mutual-inductor module including set up the main circuit board on the lower terminal surface of base, peg graft respectively three measurement mutual-inductor on the main circuit board, set up respectively three current-conducting plate, three wiring board on three thermomagnetic tripping device, three wiring board one end pass the through-hole of three measurement mutual-inductor respectively and connect respectively on three current-conducting plate, the three wiring board other end be provided with the wiring portion of extension outside the base respectively, be provided with a binding bolt respectively on the wiring portion of three wiring board.
2. The molded case circuit breaker according to claim 1, wherein: the three metering transformers are respectively provided with a pin header, and the pins of the three metering transformers are respectively inserted into the main circuit board.
3. The molded case circuit breaker according to claim 1 or 2, wherein: the three measurement transformers are respectively provided with an elastic clamping hook on one side, the base is provided with a clamping groove corresponding to the elastic clamping hooks in a matched mode, and the elastic clamping hooks are clamped in the clamping grooves and form clamping fit between the three measurement transformers and the base.
4. The molded case circuit breaker according to claim 1 or 2, wherein: the base on correspond the wiring portion of three wiring board and be provided with the screw respectively, the screw pass the base and connect on the wiring portion, the base on be provided with the insulating boot that separates between screw and main circuit board.
5. The molded case circuit breaker according to claim 4, wherein: the base on be provided with insulating boot assorted joint groove, the joint inslot be provided with the joint lug, the insulating boot on be provided with the constant head tank, the insulating boot set up in the joint inslot, the joint lug block in the constant head tank, and constitute the joint cooperation of insulating boot and base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348263.6U CN219435783U (en) | 2023-02-20 | 2023-02-20 | Plastic case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348263.6U CN219435783U (en) | 2023-02-20 | 2023-02-20 | Plastic case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219435783U true CN219435783U (en) | 2023-07-28 |
Family
ID=87334063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320348263.6U Active CN219435783U (en) | 2023-02-20 | 2023-02-20 | Plastic case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219435783U (en) |
-
2023
- 2023-02-20 CN CN202320348263.6U patent/CN219435783U/en active Active
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| GR01 | Patent grant |