CN203707060U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN203707060U CN203707060U CN201420044102.9U CN201420044102U CN203707060U CN 203707060 U CN203707060 U CN 203707060U CN 201420044102 U CN201420044102 U CN 201420044102U CN 203707060 U CN203707060 U CN 203707060U
- Authority
- CN
- China
- Prior art keywords
- arc
- circuit breaker
- moving contact
- contact
- cut
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 10
- 238000010891 electric arc Methods 0.000 description 10
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a miniature circuit breaker. The circuit breaker comprises a pedestal, an upper cover, a moving contact, a static contact, an operating mechanism, an end tab, an arc extinguishing chamber and a lower gasket fixedly installed on the pedestal. One end of the end tab is electrically connected with the static contact and the other end is connected to the arc extinguishing chamber. An arc cutting device is arranged between the moving contact and the static contact. The arc cutting device comprises two arc cutting baffle plates which are mutually and vertically connected and a fixing rod fixedly arranged at a joint of the two arc cutting baffle plates. Two ends of the fixing rod are movably fixed to the lower gasket. The moving contact is located between the two arc cutting baffle plates. The two arc cutting baffle plates can rotate about the fixing rod when executing opening and closing motion along with the moving contact. The circuit breaker of the utility model possesses the following advantages that a good arc extinguishing function is possessed; the structure is simple and the service life is long.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of miniature circuit breaker.
Background technology
Existing miniature circuit breaker is by mechanical method, the moving contact of miniature circuit breaker and fixed contact to be separated while cut-offfing circuit, while combined floodgate, make moving contact and fixed contact closure with contrary mechanical movement, in the time connecting and cut-off the operation of load circuit, between fixed contact and moving contact, will produce electric arc.And existing miniature circuit breaker is to introduce arc control device by run-on tab to extinguish in the time connecting and cut-off generation electric arc, but this arc leading and suppressing structure design is unreasonable, distance between moving contact and arc control device is larger, the distance of striking is long, the medium of leading arc is again air, thereby cause electric arc to arc control device striking difficulty, reduce the breaking capacity of miniature circuit breaker, and this miniature circuit breaker arc quenching effect is poor, solder joint on the moving contact of circuit breaker is easily burnt out by electric arc, thereby affects the useful life of whole miniature circuit breaker.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, a kind of simple in structure, long service life is provided, has the miniature circuit breaker of good arc-suppression function.
For achieving the above object, the utility model adopts a kind of miniature circuit breaker, comprise pedestal, upper cover, moving contact, fixed contact, operating mechanism, run-on tab, arc control device, be fixedly mounted on the lower gasket on pedestal, one end of described run-on tab is electrically connected with fixed contact, the other end is connected on arc control device, between described moving contact and fixed contact, be provided with and cut arc device, this is cut arc device and comprises cutting arc baffle plate and being fixedly installed on two fixed levers of cutting arc baffle plate junction of two orthogonal connections, the two ends of described fixed lever are movably fixed on lower gasket, described moving contact is cut between arc baffle plate at two, and cutting arc baffle plate for two can carry out and divide with moving contact, when feed motion, rotate around fixed lever.
The beneficial effect of said structure is to cut arc device by what arrange one can carry out point with moving contact, rotate when feed motion between the dynamic and static contact of circuit breaker, this cuts cutting arc baffle plate can cut off the electric arc producing between the dynamic and static contact of circuit breaker in rotation process on arc device, reach the effect of arc extinguishing, thereby the solder joint on the moving contact of circuit breaker is difficult for being burnt out by electric arc, has extended the useful life of miniature circuit breaker.And one end of fixed contact is provided with run-on tab, when the moment of moving contact and fixed contact disjunction, the electric arc producing on fixed contact is successfully incorporated in arc control device along run-on tab, thereby reaches the effect of arc extinguishing.
On described lower gasket, the two ends place of corresponding fixed lever is provided with corresponding boss, and the upper surface of boss is provided with draw-in groove, and the two ends of described fixed lever are separately positioned on and in draw-in groove, form buckle and connect.By this set, this miniature circuit breaker cut arc device install more convenient, thereby also improved assembly crewman's operating efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment internal structure schematic diagram.
Fig. 2 is that the utility model is cut arc device stereogram.
Fig. 3 is that the utility model is cut arc device end view.
Fig. 4 is the dynamic and static contact closure state diagram of the utility model embodiment.
Embodiment
As Fig. 1, 2, 3, shown in 4, the utility model embodiment is a kind of miniature circuit breaker, comprises pedestal 10, upper cover, moving contact 30, fixed contact 31, operating mechanism 20, run-on tab 32, arc control device 33, be fixedly mounted on the lower gasket 50 on pedestal 10, one end of described run-on tab 32 is electrically connected with fixed contact 31, the other end is connected on arc control device 33, between described moving contact 30 and fixed contact 31, be provided with and cut arc device 40, this cuts the integrative-structure that arc device 40 is, its entirety adopts plastic material, this is cut arc device 40 and comprises cutting arc baffle plate and being fixedly installed on two fixed levers 43 of cutting arc baffle plate junction of two orthogonal connections, cut arc baffle plate and be respectively first and cut arc baffle plate 41 and second and cut arc baffle plate 42 for described two, the two ends of described fixed lever 43 are movably fixed on lower gasket 50, described moving contact 30 is cut arc plate washer 41 and second described first and is cut between arc baffle plate 42, and first, second cuts arc baffle plate can carry out and divide with moving contact 30, when feed motion, rotate around fixed lever 43.As shown in Figure 2, on described lower gasket 50, the two ends place of corresponding fixed lever 43 is provided with corresponding boss 51, and the upper surface of boss 51 is provided with draw-in groove 510, and the two ends of described fixed lever 43 are separately positioned on the interior formation buckle of draw-in groove 510 and connect.
In conjunction with Fig. 1 and Fig. 4, in the time that miniature circuit breaker is connected, when described moving contact 30 is carried out feed motion, promotion is cut first of arc device 40 and is cut arc plate washer 41, drive described first, second to cut arc baffle plate and rotate around fixed lever 43, cut second of arc device 40 and cut arc baffle plate 42 the dynamic and static contact of closure is separated in the same side; In the time that miniature circuit breaker disconnects, moving contact 30 promotes to cut second of arc device 40 while carrying out separating brake action and cuts arc plate washer 42, drive described the first, second cut arc baffle plate and rotate around fixed lever 43, cut first of arc device 40 and cut arc baffle plate 41 and separate between moving contact 30 and fixed contact 31, thereby reach the object of cutting off electric arc between dynamic and static contact.The beneficial effects of the utility model are to cut arc device by arrange one between the dynamic and static contact of miniature circuit breaker, this cuts arc apparatus structure simplicity of design, and can effectively cut off the electric arc producing between dynamic and static contact, thereby the solder joint on the moving contact of miniature circuit breaker is not burnt out by electric arc, extend the useful life of miniature circuit breaker.
Claims (2)
1. a miniature circuit breaker, comprise pedestal, upper cover, moving contact, fixed contact, operating mechanism, run-on tab, arc control device, be fixedly mounted on the lower gasket on pedestal, one end of described run-on tab is electrically connected with fixed contact, the other end is connected on arc control device, it is characterized in that: between described moving contact and fixed contact, be provided with and cut arc device, this is cut arc device and comprises cutting arc baffle plate and being fixedly installed on two fixed levers of cutting arc baffle plate junction of two orthogonal connections, the two ends of described fixed lever are movably fixed on lower gasket, described moving contact is cut between arc baffle plate at two, and cutting arc baffle plate for two can carry out and divide with moving contact, when feed motion, rotate around fixed lever.
2. miniature circuit breaker according to claim 1, it is characterized in that: on described lower gasket, the two ends place of corresponding fixed lever is provided with corresponding boss, and the upper surface of boss is provided with draw-in groove, the two ends of described fixed lever are separately positioned on formation buckle in draw-in groove and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044102.9U CN203707060U (en) | 2014-01-21 | 2014-01-21 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044102.9U CN203707060U (en) | 2014-01-21 | 2014-01-21 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707060U true CN203707060U (en) | 2014-07-09 |
Family
ID=51057459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044102.9U Expired - Fee Related CN203707060U (en) | 2014-01-21 | 2014-01-21 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707060U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987139A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
-
2014
- 2014-01-21 CN CN201420044102.9U patent/CN203707060U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987139A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
| CN108987139B (en) * | 2017-06-01 | 2024-02-02 | 泰科电子(深圳)有限公司 | Electrical contact system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20170121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |