CN202434442U - Molded case circuit breaker possessing two different open distances - Google Patents
Molded case circuit breaker possessing two different open distances Download PDFInfo
- Publication number
- CN202434442U CN202434442U CN2011204721311U CN201120472131U CN202434442U CN 202434442 U CN202434442 U CN 202434442U CN 2011204721311 U CN2011204721311 U CN 2011204721311U CN 201120472131 U CN201120472131 U CN 201120472131U CN 202434442 U CN202434442 U CN 202434442U
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- CN
- China
- Prior art keywords
- circuit breaker
- jump buckle
- connecting rod
- rotating shaft
- tripping
- 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
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Abstract
The utility model relates to a molded case circuit breaker possessing two different open distances, comprising a bracket, a jump buckle and a connecting rod of an operation mechanism. One end of the jump buckle is in hinge joint with the bracket via a rotating shaft, the middle part of the jump buckle is in hinge joint with one end of the connecting rod via the rotating shaft, and a protrusion part is arranged at the intersected obtuse angle position of a side arm at the re-buckling end of the jump buckle and a side arm in hinge joint at one end of the bracket via the rotating shaft, and is equipped with a transverse rod perpendicular to and fixedly connected with the flat surface of the jump buckle. By employing the transverse rod perpendicular to and fixedly connected with the flat surface of the jump buckle and on the jump buckle, when the circuit breaker needs to break lines during the normal running, because the re-buckling end is relatively fixed, the transverse rod limits the movement range of an upper connecting rod connected with the transverse rod; when a large short circuit current is broken, the movement range of the upper connecting rod connected with the transverse rod is enlarged, so that the open distance is increased, an arc is lengthened to be conducive to break and the breaking capability of the circuit breaker can be improved; the open distance is small at the normal opening, so that the breaking speed of the circuit breaker can be improved.
Description
Technical field
The utility model belongs to a kind of mold cased circuit breaker, particularly relates to a kind of breaker of plastic casing that two kinds of differences are opened distance that has.
Background technology
Circuit breaker is when gate-dividing state, and the distance between the dynamic and static contact is called out distance.The size of opening distance has determined the breaking capacity of circuit breaker.Short trouble in circuit, occurs, when short circuit current reached the action setting value, the breaker open operation line disconnection played a protective role.Circuit breaker can produce electric arc in breaking course, short circuit current is big more, and what circuit breaker needed opens apart from big more, and what electric arc drew between this moment dynamic and static contact is long more, quite with in sealing in an arc resistance.Electric arc is long more, and the bigger just easier blow-out of resistance makes circuit breaker disjunction short circuit current rapidly, thereby plays the effect of protection circuit and power consumption equipment.
The normal disjunction circuit that needs in service of circuit breaker during like maintenance circuit, maintenance power consumption equipment, is pulled handle with hand usually and is made breaker open operation, because electric current is the normal electrical flow valuve in the circuit, electric current is little, also little just need not of energy come the disjunction circuit with large opening.The most of operating mechanism of circuit breaker all adopts no matter which kind of reason separating brake all has the identical distance of opening at present, can not select different disjunction conditions on demand.
Summary of the invention
The utility model provides a kind of can opening apart from the two kinds of differences that have of tool according to different needs changes to open the breaker of plastic casing of distance for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the support, tripping and the connecting rod that include operating mechanism; One end and the described support of described tripping are movably hinged with rotating shaft; One end of the middle part of described tripping and described connecting rod is movably hinged with rotating shaft; At one side arm of end of thread again of described tripping be movably articulated in the place, obtuse angle that a distolateral arm of described support intersects with rotating shaft one ledge is arranged, and on this ledge, have one with the perpendicular cross bar that is connected of platen surface of described tripping.
The utility model can also adopt following technical scheme:
Described cross bar can be a transverse axis.
Advantage and the good effect that the utlity model has are: in tripping, be fixed with and the perpendicular cross bar that is connected of the platen surface of tripping owing to adopted; Just can be normal in service when needing the disjunction circuit at circuit breaker; Because this moment, end of thread was relatively-stationary again, this cross bar can limit the scope of activities of the last connecting rod that is attached thereto at this moment for opening distance for a short time; When the big short circuit current of disjunction, move on again after the end of thread release, this cross bar can't limit the scope of activities of the last connecting rod that is attached thereto, and ultra large opening can elongate electric arc and be beneficial to disjunction, can improve the breaking capacity of circuit breaker.Realized to change according to different needs and opened distance.And this scheme since just the proper site in tripping do slightly to improve and add cross tube to realize the object of the invention, so lower to the required precision of processes, also can reduce processing cost.
Description of drawings
Fig. 1 is the tripping structural representation of the utility model;
Fig. 2 is tripping one of structural representation in operating mechanism of the utility model;
Fig. 3 be the tripping of the utility model in operating mechanism structural representation two.
Embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
As shown in Figure 1 in tripping 1 one side arm 10 of end of thread again and be movably articulated in the places, obtuse angle that a distolateral arm 11 of support intersects with rotating shaft one ledge 12 arranged, and on this ledge 12, have one with the perpendicular cross bar that is connected 2 of platen surface of tripping 1.
When artificial separating brake, pull handle 7 by direction shown in Figure 2, spring 5 drives levers 6, go up connecting rod 8, lower link 9 and moving contact 4 upwards lifts, the tie point 13 of connecting rod 8 and lower link 9 displacement formation angle backward under the effect of spring force this moment on.The separating brake process of circuit breaker is accomplished in the motion of last connecting rod 8 that cross bar 2 in the tripping 1 is spacing, and dynamic and static contact 4, the distance drawn back between 3 are exactly that separating brake is opened distance.As shown in Figure 3, same under the pulling force of spring 5 when the fault disjunction, moving contact 4 is upwards lifted.Because during the fault separating brake, tripping 1 and snap close release make upwards upset of tripping 1, move on the cross bar 2 spacing points in the tripping 1, and clearance between open contacts is increased.
Claims (2)
1. one kind has the breaker of plastic casing that two kinds of differences are opened distance; Include support, tripping and the connecting rod of operating mechanism; One end and the described support of described tripping are movably hinged with rotating shaft; One end of the middle part of described tripping and described connecting rod is movably hinged with rotating shaft; It is characterized in that: at one side arm of end of thread again of described tripping be movably articulated in the place, obtuse angle that a distolateral arm of described support intersects with rotating shaft one ledge is arranged, and on this ledge, have one with the perpendicular cross bar that is connected of platen surface of described tripping.
2. according to claim 1 have a breaker of plastic casing that two kinds of differences are opened distance, and it is characterized in that: described cross bar can be a transverse axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204721311U CN202434442U (en) | 2011-11-24 | 2011-11-24 | Molded case circuit breaker possessing two different open distances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204721311U CN202434442U (en) | 2011-11-24 | 2011-11-24 | Molded case circuit breaker possessing two different open distances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202434442U true CN202434442U (en) | 2012-09-12 |
Family
ID=46783869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204721311U Expired - Fee Related CN202434442U (en) | 2011-11-24 | 2011-11-24 | Molded case circuit breaker possessing two different open distances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202434442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427002A (en) * | 2011-11-24 | 2012-04-25 | 天津市百利电气有限公司 | Molded case circuit breaker for realizing brake separation at different distances |
-
2011
- 2011-11-24 CN CN2011204721311U patent/CN202434442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427002A (en) * | 2011-11-24 | 2012-04-25 | 天津市百利电气有限公司 | Molded case circuit breaker for realizing brake separation at different distances |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20181124 |