CN113921345A - Low-voltage intelligent circuit breaker - Google Patents
Low-voltage intelligent circuit breaker Download PDFInfo
- Publication number
- CN113921345A CN113921345A CN202111019696.9A CN202111019696A CN113921345A CN 113921345 A CN113921345 A CN 113921345A CN 202111019696 A CN202111019696 A CN 202111019696A CN 113921345 A CN113921345 A CN 113921345A
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- electronic control
- base
- cover
- circuit breaker
- plate
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- 230000008094 contradictory effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000009977 dual effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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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
-
- 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
- H01H71/10—Operating or release mechanisms
-
- 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
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Abstract
The invention relates to a low-voltage intelligent circuit breaker, which comprises a base, a middle cover arranged on the base, an upper cover arranged on the middle cover, an operating mechanism, a contact system, an arc extinguishing system, a main circuit board and an electronic release module, wherein an electronic control module electrically connected with the main circuit board is arranged in the middle cover, the electronic control module comprises a shell and an electronic control circuit board assembly, a contact pin spliced with the main circuit board is arranged on the electronic control circuit board assembly, a thermal release mechanism is arranged at one side of the base corresponding to the electronic control module and comprises a current-conducting plate, a bimetallic strip, a bracket, an armature and a torsional spring, an adjusting screw butted against the bimetallic strip is arranged on the traction rod, a driving arm matched with the traction rod is arranged at one end of the armature, and the driving arm acts along with the armature and pushes the traction rod to act. The invention has the advantages of simple structure, stable and reliable performance, small volume, convenient assembly, long service life and high safety.
Description
Technical Field
The invention relates to a molded case circuit breaker, in particular to a low-voltage intelligent circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker has overload, short circuit and under-voltage protection functions, can protect lines and power supply equipment from being damaged, and can protect fire hazards possibly caused by long-term grounding faults which cannot be detected by overcurrent protection. The existing low-voltage intelligent circuit breaker comprises a shell, an operating mechanism, a contact system, an arc extinguishing system and an electronic control circuit board, wherein the service life of the electronic control circuit board of the existing low-voltage intelligent circuit breaker is much shorter than that of a circuit breaker main body, the electronic control circuit board is not provided with integrated modules, and the electronic control circuit board cannot be replaced, so that the whole circuit breaker is scrapped, and the service life of the low-voltage intelligent circuit breaker is greatly shortened. Therefore, the electronic control circuit board is designed in a modularized mode by the existing manufacturer, the electronic circuit board is convenient to replace, however, due to the requirement of the design size of the circuit breaker, the thermal tripping protection module cannot be accommodated in the circuit breaker shell, when the electronic control circuit board is damaged, the basic protection function of the circuit breaker is lost by the low-voltage intelligent circuit breaker, the circuit cannot be effectively protected, and great potential safety hazards exist, so that the low-voltage intelligent circuit breaker with the mechanical and electronic dual protection functions is very necessary.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the low-voltage intelligent circuit breaker which is simple in structure, stable and reliable in performance, small in size, convenient and fast to assemble, long in service life and high in safety.
In order to achieve the purpose, the invention adopts a low-voltage intelligent circuit breaker, which comprises a base, a middle cover arranged on the base, an upper cover arranged on the middle cover, an operating mechanism, a contact system, an arc extinguishing system, a main circuit board arranged in the base and an electronic release module arranged in the middle cover, wherein an electronic control module electrically connected with the main circuit board is arranged in the middle cover, the electronic control module comprises a shell and an electronic control circuit board assembly arranged in the shell, a contact pin spliced with the main circuit board is arranged on the electronic control circuit board assembly, a thermal release mechanism is arranged in the base at one side corresponding to the electronic control module, and the thermal release mechanism comprises a conductive plate arranged on a wiring board corresponding to a draw bar, a bimetallic strip arranged on the conductive plate, a bracket arranged on the conductive plate, an armature rotatably arranged on the bracket, The traction rod is provided with an adjusting screw which is abutted against the bimetallic strip, one end of the armature is provided with a driving arm which is matched with the traction rod, and the driving arm acts along with the armature and pushes the traction rod to act.
The beneficial effect of above-mentioned structure is: the electronic control module adopts a plug-in structural design, and is plugged with the main circuit board through a contact pin, so that the electronic control module is convenient to disassemble and assemble, the electronic control module is convenient to replace, and the thermal tripping mechanism is arranged in the base, and can drive the traction rod to act after the electronic control module is damaged, so that the purpose of protecting the circuit can be achieved. And this thermal tripping device adopts modular structure design, and the assembly is more convenient, and structural design is simple, and occupation space is little, and this low-voltage intelligent circuit breaker is the same with current low-voltage intelligent circuit breaker's volume, and can realize electronic type, the dual circuit breaker protect function of mechanical type to this low-voltage intelligent circuit breaker has simple structure, stable performance reliable, small, the assembly is convenient, long service life, the advantage of high security.
Particularly, the well lid on be provided with the storage tank that is used for placing the casing, the casing including set up drain pan in well lid, set up the apron on the drain pan, rotate the flip that sets up on the apron, the both sides of drain pan on be provided with the fixture block respectively, the storage tank of well lid in be provided with the draw-in groove with fixture block matched with, the fixture block in the draw-in groove, and constitute the joint cooperation of drain pan and well lid. The bottom shell of the electronic control module is clamped in the solute groove of the middle cover, so that the electronic control module and the middle cover can be assembled conveniently, the electronic control module can be disassembled and assembled conveniently, and the electronic control module can be replaced more conveniently.
Particularly, one end of the turning cover is provided with a rotating shaft part, and two ends of the rotating shaft part are respectively clamped in the positioning grooves of the cover plate and form rotating connection and matching of the turning cover and the cover plate. The turning cover is provided with a rotating shaft part clamped on the cover plate, so that the turning cover and the cover plate are convenient to assemble, and the assembly is more convenient and fast.
Particularly, the other end of the flip cover is provided with a clamping shaft part, two ends of the clamping shaft part are respectively provided with a boss part, the cover plate is provided with a limiting groove matched with the boss part, and the boss part is clamped in the limiting groove and forms clamping matching of the cover plate and the flip cover. The shaft clamping part which is clamped with the cover plate is arranged on the flip cover, so that the connection between the flip cover and the cover plate can be more compact.
Particularly, the basic shape of the current conducting plate is Z-shaped, one end of the current conducting plate is connected to a movable connecting plate, the movable connecting plate is connected with a movable contact of the contact system, the other end of the current conducting plate is connected to a wiring board, a first screw and a second screw are respectively arranged in a mounting groove in the lower end face of the base, the first screw sequentially penetrates through the base and the current conducting plate and is connected to the wiring board, the second screw sequentially penetrates through the base and the movable connecting plate and is connected to the current conducting plate, and a bottom plate covering the first screw and the second screw is arranged on the mounting groove of the base. The both ends of current conducting plate are connected respectively on wiring board, the connecting plate moves, the current conducting plate with move connecting plate, the integrated modularization of wiring board, and wiring board, move connecting plate, current conducting plate and pass through first screw, second fix with screw on the base respectively to be convenient for realize this low pressure intelligent circuit breaker's modular assembly, thereby be favorable to improving this low pressure intelligent circuit breaker's assembly efficiency. And the bottom plate covers the first screw and the second screw, so that the first screw and the second screw are prevented from being exposed, and the safety performance of the low-voltage intelligent circuit breaker is improved.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is an exploded view of an embodiment of the present invention.
Fig. 4 is a perspective view of a thermal trip mechanism according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, an embodiment of the invention is a low-voltage intelligent circuit breaker, including a base 10, a middle cover 11 disposed on the base 10, an upper cover 12 disposed on the middle cover 11, an operating mechanism 13, a contact system 14, an arc extinguishing system 15, a main circuit board 16 disposed in the base 10, and an electronic trip unit module 17 disposed in the middle cover 11, wherein an electronic control module 20 electrically connected to the main circuit board 16 is disposed in the middle cover 11, the electronic control module 20 includes a housing 21 and an electronic control circuit board assembly 22 disposed in the housing 21, a pin 221 inserted into the main circuit board 16 is disposed on the electronic control circuit board assembly 22, a thermal trip mechanism 30 is disposed at a side of the base 10 corresponding to the electronic control module 30, and the thermal trip mechanism 30 includes a conductive plate 31 disposed on the wiring board 18 corresponding to a draw bar 131, a first contact pin and a second contact pin 221 disposed on the conductive plate 18, The double-metal piece 32 arranged on the conductive plate 31, the bracket 33 arranged on the conductive plate 31, the armature 34 rotatably arranged on the bracket 33, and the torsion spring 35 arranged between the armature 34 and the bracket 33, wherein the traction rod 131 is provided with an adjusting screw 132 abutting against the double-metal piece 32, one end of the armature 34 is provided with a driving arm 341 matched with the traction rod 131, and the driving arm 341 moves along with the armature 34 and pushes the traction rod 131 to move.
As shown in fig. 3, the middle cover 11 is provided with a receiving groove 111 for receiving the housing 21, the housing 21 includes a bottom shell 211 disposed in the middle cover 11, a cover plate 212 disposed on the bottom shell 211, and a flip 213 rotatably disposed on the cover plate 212, two sides of the bottom shell 211 are respectively provided with a latch 2111, the receiving groove 111 of the middle cover 11 is provided with a latch groove 112 engaged with the latch 2111, the latch 2111 is latched in the latch groove 112, and the bottom shell 211 and the middle cover 11 are engaged with each other. The bottom shell of the electronic control module is clamped in the solute groove of the middle cover, so that the electronic control module and the middle cover can be assembled conveniently, the electronic control module can be disassembled and assembled conveniently, and the electronic control module can be replaced more conveniently. A rotating shaft portion 2131 is arranged at one end of the flip 213, and two ends of the rotating shaft portion 2131 are respectively clamped in the positioning grooves 2121 of the cover plate 212, so that the flip 213 is in rotating connection with and matched with the cover plate 212. The turning cover is provided with a rotating shaft part clamped on the cover plate, so that the turning cover and the cover plate are convenient to assemble, and the assembly is more convenient and fast. The other end of the flip cover 213 is provided with a shaft locking part 2132, two ends of the shaft locking part 2132 are respectively provided with a boss part 2133, the cover plate 212 is provided with a limiting groove 2122 matched with the boss part 2133, and the boss part 2133 is clamped in the limiting groove 2122 to form clamping matching of the cover plate 212 and the flip cover 213. The shaft clamping part which is clamped with the cover plate is arranged on the flip cover, so that the connection between the flip cover and the cover plate can be more compact.
As shown in fig. 2, the basic shape of the conductive plate 31 is Z-shaped, one end of the conductive plate 31 is connected to a movable connecting plate 36, the movable connecting plate 36 is connected to a movable contact of the contact system 14, the other end of the conductive plate 31 is connected to a terminal plate 18, a first screw 102 and a second screw 103 are respectively arranged in a mounting groove 101 on the lower end surface of the base 10, the first screw 102 sequentially penetrates through the base 10 and the conductive plate 31 and is connected to the terminal plate 18, the second screw 103 sequentially penetrates through the base 10 and the movable connecting plate 36 and is connected to the conductive plate 31, and a bottom plate 104 covering the first screw 102 and the second screw 103 is arranged on the mounting groove 101 of the base 10. The both ends of current conducting plate are connected respectively on wiring board, the connecting plate moves, the current conducting plate with move connecting plate, the integrated modularization of wiring board, and wiring board, move connecting plate, current conducting plate and pass through first screw, second fix with screw on the base respectively to be convenient for realize this low pressure intelligent circuit breaker's modular assembly, thereby be favorable to improving this low pressure intelligent circuit breaker's assembly efficiency. And the bottom plate covers the first screw and the second screw, so that the first screw and the second screw are prevented from being exposed, and the safety performance of the low-voltage intelligent circuit breaker is improved.
The electronic control module adopts a plug-in structural design, and is plugged with the main circuit board through a contact pin, so that the electronic control module is convenient to disassemble and assemble, the electronic control module is convenient to replace, and the thermal tripping mechanism is arranged in the base, and can drive the traction rod to act after the electronic control module is damaged, so that the purpose of protecting the circuit can be achieved. And this thermal tripping device adopts modular structure design, and the assembly is more convenient, and structural design is simple, and occupation space is little, and this low-voltage intelligent circuit breaker is the same with current low-voltage intelligent circuit breaker's volume, and can realize electronic type, the dual circuit breaker protect function of mechanical type to this low-voltage intelligent circuit breaker has simple structure, stable performance reliable, small, the assembly is convenient, long service life, the advantage of high security.
Claims (5)
1. The utility model provides a low-voltage intelligent circuit breaker, includes the base, sets up well lid on the base, sets up upper cover, operating device, contact system, arc extinguishing system, the main line board of setting in the base, sets up the electronic release module in well lid, its characterized in that: the middle cover in be provided with the electronic control module who is connected with the main line board electricity, the electronic control module include the casing, set up the electronic control circuit board subassembly in the casing, the electronic control circuit board subassembly on be provided with the contact pin of pegging graft mutually with the main line board, the base in correspond one side department of electronic control module and be provided with thermal tripping device, thermal tripping device include correspond that traction lever department sets up the current conducting plate on the wiring board, set up bimetallic strip on the current conducting plate, set up the support on the current conducting plate, rotate armature, the torsional spring of setting between armature and support that sets up on the support, the traction lever on be provided with the adjusting screw of contradicting on bimetallic strip, armature one end be provided with the actuating arm with traction lever matched with, the actuating arm just promotes the traction lever action along with armature action.
2. Low-voltage intelligent circuit breaker according to claim 1, characterized in that: the well lid on be provided with the storage tank that is used for placing the casing, the casing including set up in well lid drain pan, set up apron on the drain pan, rotate the flip that sets up on the apron, the both sides of drain pan on be provided with the fixture block respectively, the storage tank of well lid in be provided with the draw-in groove with fixture block matched with, the fixture block in the draw-in groove, and constitute the joint cooperation of drain pan and well lid.
3. Low-voltage intelligent circuit breaker according to claim 2, characterized in that: one end of the turning cover is provided with a rotating shaft part, and two ends of the rotating shaft part are respectively clamped in the positioning grooves of the cover plate to form the rotating connection and matching of the turning cover and the cover plate.
4. Low voltage intelligent circuit breaker according to claim 2 or 3, characterized in that: the flip-open cover is characterized in that a clamping shaft part is arranged at the other end of the flip-open cover, a boss part is respectively arranged at two ends of the clamping shaft part, a limiting groove matched with the boss part is arranged on the cover plate, the boss part is clamped in the limiting groove, and the cover plate is clamped and matched with the flip-open cover.
5. Low-voltage intelligent circuit breaker according to claim 1 or 2, characterized in that: the basic shape of the current conducting plate is Z-shaped, one end of the current conducting plate is connected to the movable connecting plate, the movable connecting plate is connected with a movable contact of the contact system, the other end of the current conducting plate is connected to the wiring board, a first screw and a second screw are respectively arranged in a mounting groove in the lower end face of the base, the first screw sequentially penetrates through the base and the current conducting plate and is connected to the wiring board, the second screw sequentially penetrates through the base and the movable connecting plate and is connected to the current conducting plate, and a bottom plate covering the first screw and the second screw is arranged on the mounting groove of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019696.9A CN113921345A (en) | 2021-09-01 | 2021-09-01 | Low-voltage intelligent circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019696.9A CN113921345A (en) | 2021-09-01 | 2021-09-01 | Low-voltage intelligent circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113921345A true CN113921345A (en) | 2022-01-11 |
Family
ID=79233540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111019696.9A Withdrawn CN113921345A (en) | 2021-09-01 | 2021-09-01 | Low-voltage intelligent circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113921345A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876220A (en) * | 2015-12-14 | 2017-06-20 | 浙江正泰电器股份有限公司 | The thermal overload alarm non-tripping device of breaker |
| CN110098092A (en) * | 2019-05-10 | 2019-08-06 | 北京人民电器厂有限公司 | A kind of the two poles of the earth miniature circuit breaker |
| CN213304024U (en) * | 2020-08-26 | 2021-05-28 | 中国电力科学研究院有限公司 | Intelligent molded case circuit breaker with broadband power line carrier communication function |
| CN216015257U (en) * | 2021-09-01 | 2022-03-11 | 乐清市海格物联科技有限公司 | Low-voltage intelligent circuit breaker |
-
2021
- 2021-09-01 CN CN202111019696.9A patent/CN113921345A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876220A (en) * | 2015-12-14 | 2017-06-20 | 浙江正泰电器股份有限公司 | The thermal overload alarm non-tripping device of breaker |
| CN110098092A (en) * | 2019-05-10 | 2019-08-06 | 北京人民电器厂有限公司 | A kind of the two poles of the earth miniature circuit breaker |
| CN213304024U (en) * | 2020-08-26 | 2021-05-28 | 中国电力科学研究院有限公司 | Intelligent molded case circuit breaker with broadband power line carrier communication function |
| CN216015257U (en) * | 2021-09-01 | 2022-03-11 | 乐清市海格物联科技有限公司 | Low-voltage intelligent circuit breaker |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221021 Address after: Room 419, Unit 2, Building 2, No. 11, Middle Spectra Road, Huangpu District, Guangzhou, Guangdong 510670 Applicant after: Guangzhou Meishuo Shengfu Energy Technology Co.,Ltd. Address before: 325600 dianhou Industrial Zone, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant before: Yueqing Haige IOT Technology Co.,Ltd. |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220111 |