CN107275161B - Small-sized circuit breaker - Google Patents
Small-sized circuit breaker Download PDFInfo
- Publication number
- CN107275161B CN107275161B CN201710501861.1A CN201710501861A CN107275161B CN 107275161 B CN107275161 B CN 107275161B CN 201710501861 A CN201710501861 A CN 201710501861A CN 107275161 B CN107275161 B CN 107275161B
- Authority
- CN
- China
- Prior art keywords
- lock catch
- contact
- supporting plate
- arc
- central shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
- H01H71/40—Combined electrothermal and electromagnetic 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A small-sized circuit breaker comprises a shell, an operating mechanism, a contact mechanism, an electromagnetic tripping mechanism and an arc extinguish chamber, wherein the operating mechanism comprises a handle exposed out of the shell, the inner end of the handle is connected with a lever through a U-shaped connecting rod, the lever is respectively spliced with a lock catch and a contact supporting plate which can rotate mutually in a hoop mode through a central shaft and an auxiliary shaft, the lock catch and the contact supporting plate mutually form a three-in-one lock catch device, and a moving contact on the contact supporting plate is matched with a fixed contact arranged on the outer side of the arc extinguish chamber; a bimetallic strip which is bent by heating and pushes the lock catch open to realize thermal shedding is arranged in a matching way with the lock catch; a counter-force spring is arranged on one side of the central shaft, and a lock catch spring acting on the lock catch is arranged on the other side of the central shaft; the auxiliary shaft is provided with a contact spring acting on the contact supporting plate; a plurality of flow deflectors which play a role in guiding arc are arranged on an arc striking channel between the electromagnetic tripping mechanism and the arc extinguishing chamber; the arc extinguishing device has the characteristics of simple and reasonable structure, convenience in use and control, stable use performance, good arc extinguishing effect, high sensitivity, long service life and the like.
Description
Technical Field
The invention relates to a miniature circuit breaker, and belongs to the technical field of circuit breakers.
Background
The small circuit breaker is used as a mature electric appliance, is widely applied to various places such as industry, commerce, high-rise and civil houses and the like, is mainly used for the overload and short circuit protection of illumination, distribution lines and equipment of office buildings, houses and similar buildings, and can also be used for the infrequent on-off operation and conversion of the lines; however, the latching mechanism in the existing miniature circuit breaker is relatively complex, and more assemblies are adopted, so that poor control sensitivity and failure are easy to occur, and the service life of the circuit breaker is influenced; in addition, the arc extinguishing effect of the arc extinguishing chamber is not stable, the integral use sensitivity is influenced, and the use effect is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the miniature circuit breaker which is improved on the basis of the prior art, has the advantages of simple and reasonable structure, convenient use and control, stable service performance, good arc extinguishing effect, high sensitivity and prolonged service life.
The invention aims to solve the technical scheme that the miniature circuit breaker comprises a shell, an operating mechanism, a contact mechanism, an electromagnetic tripping mechanism and an arc extinguish chamber, wherein the operating mechanism comprises a handle exposed out of the shell, the inner end of the handle is connected with a lever through a U-shaped connecting rod, the lever is respectively spliced with a lock catch and a contact supporting plate which can rotate mutually in a hoop mode through a central shaft and an auxiliary shaft and mutually form a three-in-one lock catch device, and a moving contact on the contact supporting plate is matched with a static contact arranged on the outer side of the arc extinguish chamber; and a bimetallic strip which is bent by heating and pushes the lock catch open to realize thermal shedding is arranged in a matching way with the lock catch.
Preferably, the method comprises the following steps: a counter-force spring is arranged on one side of the central shaft, and a lock catch spring acting on the lock catch is arranged on the other side of the central shaft; the auxiliary shaft is provided with a contact spring acting on the contact supporting plate; the electromagnetic tripping mechanism is composed of a movable iron core and a coil, wherein the movable iron core is axially arranged, the coil is sleeved outside the iron core, generates a magnetic field through overcurrent and drives the iron core to move, a plurality of flow deflectors for guiding arc are arranged on an arc striking channel between the electromagnetic tripping mechanism and the arc extinguishing chamber, and connecting terminals are respectively arranged inside two sides of the shell.
The invention is an improvement of the prior art, and has the characteristics of simple and reasonable structure, convenient use and control, stable service performance, good arc extinguishing effect, high sensitivity, prolonged service life and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of the three-in-one latch of the present invention.
Detailed Description
The invention will be described in detail below with reference to the following figures: as shown in fig. 1 and 2, the miniature circuit breaker of the present invention comprises a housing 1, an operating mechanism 2, a contact mechanism 3, an electromagnetic trip mechanism 4 and an arc extinguish chamber 5, wherein the operating mechanism 2 comprises a handle 6 exposed outside the housing 1, the inner end of the handle 6 is connected with a lever 8 through a U-shaped connecting rod 7, the lever 8 is sequentially spliced with a lock catch 11 and a contact supporting plate 12 which can rotate mutually through a central shaft 9 and an auxiliary shaft 10 in a hoop manner, and form a three-in-one lock catch device, and a movable contact 13 on the contact supporting plate 12 is matched with a fixed contact 14 arranged outside the arc extinguish chamber 5; a bimetal 15 which is bent by heat to push the lock catch open to realize thermal tripping is arranged in cooperation with the lock catch 11.
As shown in the figure, a counter spring 16 is arranged on one side of the central shaft 9, and a lock catch spring 17 acting on the lock catch 11 is arranged on the other side; the auxiliary shaft 10 is provided with a contact spring 18 acting on the contact supporting plate 12; electromagnetic trip mechanism 4 by the axial movable iron core 19 of arranging and cover put outside the iron core, the overcurrent produces the magnetic field and drives the coil 20 that the iron core removed and constitute, be provided with the water conservancy diversion piece 21 that the multichannel plays the effect of leading the arc on the striking passageway between electromagnetic trip mechanism 4 and explosion chamber 5, casing 1 both sides inside install binding post 22 respectively.
Claims (1)
1. The utility model provides a miniature circuit breaker, includes casing, operating device, contact mechanism, electromagnetism tripping device and explosion chamber, its characterized in that: the operating mechanism comprises a handle exposed out of the shell, the inner end of the handle is connected with a lever through a U-shaped connecting rod, the lever is respectively spliced with a lock catch and a contact supporting plate which can rotate mutually in a hoop mode through a central shaft and an auxiliary shaft, and mutually form a three-in-one lock catch device, and a moving contact on the contact supporting plate is matched with a static contact arranged on the outer side of the arc extinguish chamber; a bimetallic strip which is bent by heating and pushes the lock catch open to realize thermal shedding is arranged in a matching way with the lock catch; a counter-force spring is arranged on one side of the central shaft, and a lock catch spring acting on the lock catch is arranged on the other side of the central shaft; the auxiliary shaft is provided with a contact spring acting on the contact supporting plate; electromagnetic tripping mechanism put by the movable iron core and the cover that the axial was arranged movable iron core is outer, overcurrent produces magnetic field and drives the coil that movable iron core removed is constituteed, is provided with the water conservancy diversion piece that the multichannel played the guide arc effect on the striking passageway between electromagnetic tripping mechanism and the explosion chamber, casing both sides inside install binding post respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501861.1A CN107275161B (en) | 2017-06-27 | 2017-06-27 | Small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501861.1A CN107275161B (en) | 2017-06-27 | 2017-06-27 | Small-sized circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107275161A CN107275161A (en) | 2017-10-20 |
| CN107275161B true CN107275161B (en) | 2020-09-15 |
Family
ID=60068819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710501861.1A Active CN107275161B (en) | 2017-06-27 | 2017-06-27 | Small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107275161B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648969B (en) * | 2018-06-28 | 2023-12-01 | 美高电气科技有限公司 | Double-breakpoint miniature circuit breaker |
| CN108695117B (en) * | 2018-06-28 | 2023-09-12 | 美高电气科技有限公司 | Operating mechanism of double-contact miniature circuit breaker |
| CN111430196A (en) * | 2019-01-09 | 2020-07-17 | 天津市中力神盾电子科技有限公司 | Composite switch |
| CN111243911A (en) * | 2020-01-15 | 2020-06-05 | 美高电气科技有限公司 | Novel mechanical mechanism circuit breaker |
| CN111627774A (en) * | 2020-06-29 | 2020-09-04 | 成都彩佳角商贸有限公司 | Intelligent circuit breaker |
| CN117238728B (en) * | 2023-09-21 | 2024-05-31 | 安徽永汇新材料科技有限公司 | Low-voltage direct-current circuit breaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483123A1 (en) * | 1980-05-20 | 1981-11-27 | Matsushita Electric Works Ltd | PERFECTED CIRCUIT BREAKER |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630614B (en) * | 2008-07-15 | 2011-06-29 | 浙江正泰电器股份有限公司 | Thermal tripping device of bimetallic strip |
| CN102082048A (en) * | 2009-11-26 | 2011-06-01 | 无锡唯特电气技术有限公司 | Miniature circuit breaker with high breaking capacity |
| CN101958206B (en) * | 2009-12-09 | 2013-01-16 | 上海诺雅克电气有限公司 | Miniature circuit breaker operation mechanism capable of realizing multi-control input and output |
| CN102426999B (en) * | 2011-09-13 | 2014-11-19 | 浙江正泰电器股份有限公司 | Operating mechanism of modularized breaker |
| CN206893576U (en) * | 2017-06-27 | 2018-01-16 | 浙江美格尔电气科技有限公司 | A kind of miniature circuit breaker |
-
2017
- 2017-06-27 CN CN201710501861.1A patent/CN107275161B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483123A1 (en) * | 1980-05-20 | 1981-11-27 | Matsushita Electric Works Ltd | PERFECTED CIRCUIT BREAKER |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107275161A (en) | 2017-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 313200 No. 299 Changhong East Street, Wukang Town, Deqing County, Huzhou City, Zhejiang Province Applicant after: MAXGE ELECTRIC TECHNOLOGY Co.,Ltd. Address before: 313200 No. 299 Changhong East Street, Wukang Town, Huzhou City, Zhejiang Province Applicant before: ZHEJIANG MAXGE ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Miniature circuit breaker Effective date of registration: 20211230 Granted publication date: 20200915 Pledgee: Agricultural Bank of China Limited Deqing County sub branch Pledgor: MAXGE ELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2021330002754 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231201 Address after: 241100 No.12 Jiuzi Avenue, Anhui Xinwu Economic Development Zone, Wanqian District, Wuhu City, Anhui Province Patentee after: Meigao Electric (Wuhu) Co.,Ltd. Address before: 313200 No. 299, Changhong East Street, Wukang Town, Deqing County, Huzhou City, Zhejiang Province Patentee before: MAXGE ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |