CN2870151Y - Contact system of low-voltage circuit breaker - Google Patents
Contact system of low-voltage circuit breaker Download PDFInfo
- Publication number
- CN2870151Y CN2870151Y CN 200520015198 CN200520015198U CN2870151Y CN 2870151 Y CN2870151 Y CN 2870151Y CN 200520015198 CN200520015198 CN 200520015198 CN 200520015198 U CN200520015198 U CN 200520015198U CN 2870151 Y CN2870151 Y CN 2870151Y
- Authority
- CN
- China
- Prior art keywords
- contact
- circuit breaker
- voltage circuit
- arc
- housing
- 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.)
- Expired - Fee Related
Links
Abstract
A contact system of low voltage circuit breaker, which comprises shell body, control mechanism, contact assembly, said contact assembly includes upper contact, lower contact associated with lower contact, said upper contact, lower contact may be installed in shell body by turning, shell body is provided with arc quenching chamber, said lower contact is provided with arc spacer, magnetic sheet is provided below the said arc spacer. The present utility model provides a contact system of low voltage circuit breaker that could suppress arc quickly and reliablly, avoid damaging other components effectively.
Description
(1) technical field
The utility model relates to a kind of contact system of low-voltage circuit breaker.
(2) background technology
Generally, the contact system of low-voltage circuit breaker comprises housing, upper contact head, following contact, and described upper contact head connects controlling organization and out-put supply, and described contact down connects input circuit, and the chalaza of touching of upper contact head, following contact is positioned at arc control device.In order to reduce the quenching time of circuit breaker, also the someone will descend contact also to be revised as rotating contact.Two contacts are between moving period, produce an electric arc between two contacts, because both sides are at high-speed motion, ever-increasing distance has hindered the further increase of arc current, can reduce arc energy, helps quick arc extinguishing.Also the shortcoming of Cun Zaiing is: 1, electric arc can move upward, can not rapid and reliable arc extinguishing; 2, electric arc might move in the other direction to arc control device, can damage other devices; 3, this contact system high-speed motion under the electrodynamic repulsion force effect that is produced, the release of low-voltage circuit breaker also produces an action, and purpose is to cut off circuit, but owing to mechanism's time of implementation is slower, be unfavorable for timely disengagement failure circuit, can cause fault power-supply device.
(3) summary of the invention
In order to overcome existing low-voltage breaker contact system arc extinguishing poor reliability, can to damage the deficiency of other assemblies, the utility model provide a kind of can rapid and reliable arc extinguishing, effectively avoid damaging the contact system of the low-voltage circuit breaker of other devices.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of contact system of low-voltage circuit breaker, comprise housing, controlling organization, contact assembly, the following contact that described contact assembly comprises upper contact head, cooperates with upper contact head, described upper contact head, following contact are installed in rotation in the housing, be provided with arc control device in the housing, described contact down is provided with the arc sheet, and the below of described arc sheet is provided with magnetic sheet.
Further, described contact down is socketed in the interior rotating shaft of housing, and described rotating shaft is socketed on the support, and described support is fixedlyed connected with housing, has torsion spring in the described rotating shaft, and described torsion spring is positioned at the below of arc sheet.
Further again, described torsion spring one end holds out against described magnetic sheet in the bottom of descending contact.
Described magnetic sheet connects support, and described support is fixedlyed connected with housing.
Described support is connected with described housing by securing member.
Its operation principle is: in the make position of low-voltage circuit breaker, constitute galvanic circle as shown in Figure 2, when electric current flows through, upper contact head and following contact are because the effect of electric current has produced one group of rightabout electrodynamic repulsion force, there is the effect of reinforcement in the magnetic field that magnetic sheet produced to this electrodynamic repulsion force, movement velocity in the time of can increasing by two contacts and separate helps quick arc extinguishing.And be positioned at the magnetic field of the magnetic sheet generation of contact bottom down, the electric arc that produces when separating for two contacts produces a positive acting power (Lorentz force), make electric arc rapidly move to arc control device along the direction of arc control device, realize reliably quick arc extinguishing, can avoid electric arc upwards or to arc control device to move in the other direction.
The beneficial effects of the utility model mainly show: 1, can rapid and reliable arc extinguishing; 2, magnetic sheet has the striking effect, effectively avoids damaging other devices; 3, this contact system can produce bigger electrodynamic repulsion force, magnetic sheet can be strengthened this repulsion makes the contact system high-speed motion of going ahead of the rest, reach behind the certain distance H release of low-voltage circuit breaker and also move and finish, make that cutting off the circuit time that gets shortens greatly, generally reaches several milliseconds.
(4) description of drawings
Fig. 1 is the structure chart of the contact system of low-voltage circuit breaker;
Fig. 2 is the fashionable structural representation that touches of upper contact head and following contact.
(5) embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, Fig. 2, a kind of contact system of low-voltage circuit breaker, comprise housing 1, controlling organization 2, contact assembly, described contact assembly comprises upper contact head 3, the following contact 4 that cooperates with upper contact head 3, and upper contact head 3 connects controlling organization 2, and following contact connects the input power supply, described upper contact head 3, following contact 4 are installed in rotation in the housing 1, be provided with arc control device 5 in the housing 1, following contact 4 is provided with arc sheet 6, and the below of described arc sheet 6 is provided with magnetic sheet 7.Following contact 4 is socketed in the rotating shaft 8, fast rotating shaft 8 be connected on the support 10, have torsion spring 9 in the described rotating shaft 8, described torsion spring 9 is positioned at the below of arc sheet 6.
Described torsion spring 9 one ends hold out against described magnetic sheet 7 in the bottom of descending contact 4.Magnetic sheet 7 is connected with housing 1 by support 10.Described support 10 is fixedlyed connected with described housing 1 by securing member 11.
The course of work of present embodiment: the galvanic circle is under running current, and the electrodynamic repulsion force between upper contact head 3, the following contact 4 is very little, and the booster action of magnetic sheet 7 is very little, can guarantee the reliable closure of contact.Under fault condition, electric current increase at double, above-mentioned active force also is multiplied, when electric current acquires a certain degree, the controlling organization action, upper contact head 3 separates with following contact 4, upper contact head 3 is high-speed motion upwards, following contact 4 downward high-speed motions, low-voltage circuit breaker fast shut-off power supply.In the moment of contact motion, produce an electric arc between two contacts, because both sides are all at high-speed motion, ever-increasing distance H has hindered the enhancing of arc current, has significantly reduced arc energy, helps quick arc extinguishing.
Claims (4)
1, a kind of contact system of low-voltage circuit breaker, comprise housing, controlling organization, contact assembly, the following contact that described contact assembly comprises upper contact head, cooperates with upper contact head, described upper contact head, following contact are installed in rotation in the housing, be provided with arc control device in the housing, it is characterized in that: described contact down is provided with the arc sheet, and the below of described arc sheet is provided with magnetic sheet.
2, the contact system of low-voltage circuit breaker as claimed in claim 1, it is characterized in that: described contact down is socketed in the interior rotating shaft of housing, described rotating shaft is socketed on the support, described support is fixedlyed connected with housing, have torsion spring in the described rotating shaft, described torsion spring is positioned at the below of arc sheet.
3, the contact system of low-voltage circuit breaker as claimed in claim 2 is characterized in that: described torsion spring one end holds out against described magnetic sheet in the bottom of descending contact.
4, the contact system of low-voltage circuit breaker as claimed in claim 3 is characterized in that: described support is connected with described housing by securing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015198 CN2870151Y (en) | 2005-09-27 | 2005-09-27 | Contact system of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015198 CN2870151Y (en) | 2005-09-27 | 2005-09-27 | Contact system of low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870151Y true CN2870151Y (en) | 2007-02-14 |
Family
ID=37725090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520015198 Expired - Fee Related CN2870151Y (en) | 2005-09-27 | 2005-09-27 | Contact system of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2870151Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243944A (en) * | 2010-05-13 | 2011-11-16 | 上海华联低压电器有限公司 | Double-breakpoint contact mechanism of low-voltage circuit breaker |
| WO2015180574A1 (en) * | 2014-05-27 | 2015-12-03 | 通能顺达科技国际有限公司 | Circuit breaker with quick response and separation and quick response and separation method for circuit breaker |
-
2005
- 2005-09-27 CN CN 200520015198 patent/CN2870151Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243944A (en) * | 2010-05-13 | 2011-11-16 | 上海华联低压电器有限公司 | Double-breakpoint contact mechanism of low-voltage circuit breaker |
| WO2015180574A1 (en) * | 2014-05-27 | 2015-12-03 | 通能顺达科技国际有限公司 | Circuit breaker with quick response and separation and quick response and separation method for circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090306 Address after: Industrial Development Zone, Cixi Town, Zhejiang Province, China: 315313 Patentee after: Ningbo Qile Electrical Industry Co., Ltd. Address before: Industrial Zone, palm Town, Zhejiang City, Cixi Province, China: 315313 Patentee before: Ningbo Qile Electrical Appliances Industrial General Company |
|
| ASS | Succession or assignment of patent right |
Owner name: NINGBO QILE ELECTRIC APPLIANCE INDUSTRY CO.,LTD. Free format text: FORMER OWNER: NINGBO QILE ELECTRIC APPLIANCE INDUSTRY GENERAL CORPORATION Effective date: 20090306 |
|
| ASS | Succession or assignment of patent right |
Owner name: NINGBO QILE ELECTRIC APPLIANCE INDUSTRY GENERAL CO Free format text: FORMER OWNER: NINGBO QILE ELECTRIC APPLIANCE INDUSTRY CO., LTD. Effective date: 20100407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315313 ZHANGQI TOWN INDUSTRY DEVELOPMENT ZONE, CIXI CITY, ZHEJIANG PROVINCETO: 315313 NINGBO QILE ELECTRIC APPLIANCE INDUSTRY GENERAL CORPORATION, ZHANGQI TOWN, CIXI CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100407 Address after: 315313 Zhejiang province Zhangqi town Cixi city Ningbo Qile Electrical Industrial Company Patentee after: Ningbo Qile Electrical Appliances Industrial General Company Address before: 315313, Zhejiang, Cixi Province Town Industrial Development Zone Patentee before: Ningbo Qile Electrical Industry Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20120927 |