CN2731692Y - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN2731692Y CN2731692Y CN 200420059303 CN200420059303U CN2731692Y CN 2731692 Y CN2731692 Y CN 2731692Y CN 200420059303 CN200420059303 CN 200420059303 CN 200420059303 U CN200420059303 U CN 200420059303U CN 2731692 Y CN2731692 Y CN 2731692Y
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- CN
- China
- Prior art keywords
- fixed contact
- contact
- fixed
- circuit
- tab
- 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 - Lifetime
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a circuit breaker, comprising a fixed contact, an end tab and an insulating board; wherein, the fixed contact comprises a liquid guiding board, a contact and a branch of the fixed contact, which is bonded at the contact; the contact is fixed on the liquid guiding board of the fixed contact; meanwhile, the end tab is also fixed on the liquid guiding board of the fixed contact and positioned above the contact; and the insulating board is positioned under the end tab. The circuit breaker with the structure can realize the desired breaking capacity without any problems, and simultaneously the bottom and the cover have the smallest thickness to reduce the integrative cost of the elements.
Description
Technical field
The utility model relates to a kind of cross section that can bear short circuit and current-carrying element of shape of having, and relates to a kind of circuit-breaker more specifically.
Background technology
In the prior art, for example among the U.S. Patent No. US5596184, as shown in Figure 3, fixed contact produces backward current in different aspect (electric current flows into circuit upper surface or lower surface).This need increase the exceptional space of MCCB (breaker of plastic casing) voltage contact area, the size that it increases the overall dimensions of circuit breaker or influences the expulsion element.This just needs to reduce blow-out plate number, is unadvisable selection for breaking capacity/short circuit tolerance of MCCB.
In order to overcome the caused problem of the exceptional space that needs owing to backward current in MCCB, novel design is on the plate identical with electric current inflow circuit the refluence path to be set.Can under the situation of little volume of trying one's best, realize high short circuit breaking capacity like this.
In other prior art, for example among U.S. Pat 4866403 and US5475193 and European patent EP 0621615A1 and the EP0274778, add that in the front, contact of fixed contact assembly one is called the branch of yoke.
In the superincumbent patent, plastic components is arranged on fixed contact, its role is to discharge gas when electric arc produces and quicken extinguish arcs.But the gas that is sent has simultaneously increased indoor pressure, strengthened the end/danger that lid ruptures.
Summary of the invention
In order to overcome above-mentioned the problems of the prior art, the purpose of this utility model is to provide a kind of circuit-breaker, and its purpose is to obtain required breaking capacity when minimizing cost.
In order to realize above-mentioned purpose of the present utility model, circuit-breaker of the present utility model uses a kind of novel fixed contact and run-on tab, described fixed contact comprises baffler, contact point, fixed contact branch, wherein fixed contact branch engages at contact point, contact point is fixed to the baffler of fixed contact, and run-on tab also is fixed to the baffler of fixed contact and is positioned on the contact point simultaneously.
In the utility model, owing to do not have above-mentioned yoke of the prior art, in the utility model, do not use simultaneously yet and when electric arc produces, discharge gas to quicken the plastic components of extinguish arcs, fixed contact branch (the label 2 of accompanying drawing that is used for loaded current, 3) only directly be bonded on the contact point place, contact element is set up to contact with the transfer arm of shift joint and is connected simultaneously, and run-on tab can be used for electric arc is expelled contact tip, thereby realizes adverse current effect completely.
In the utility model, do not use the plastic components that is used to produce gas; Do not produce the insulating trip (7 in the accompanying drawing) of any gas in this position use, thereby can not have the required breaking capacity of realization of any problem, the end and lid have minimum thickness simultaneously, can reduce the whole cost of element thus.
Description of drawings
Fig. 1 is the decomposing schematic representation according to circuit-breaker of the present utility model;
Fig. 2 is the decomposing schematic representation according to the circuit-breaker of first embodiment of the present utility model;
Fig. 3 is the schematic perspective view according to the circuit-breaker of second embodiment of the present utility model;
Fig. 4 and Fig. 5 are the structural representation of the circuit-breaker of prior art;
Fig. 6 is the schematic diagram of position relation between run-on tab and the fixed contact surface;
Fig. 7 is that run-on tab is fixed to the schematic diagram on the fixed contact by rivet;
Fig. 8 is fixed by welding to schematic diagram on the fixed contact for run-on tab.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Embodiment 1
Fig. 2 shows the basic fixed contact assembly.It comprises fixed contact 1, and the electric current that flows into circuit from electric current enters into circuit-breaker, and fixed contact 1 is divided into two branches 2 and 3 as shown in the figure.Branch engages at contact point 4, and contact point is brazed to the flat baffler 5 of fixed contact, and described baffler is for what tilt, and the baffler of fixed contact is provided for fixedly run-on tab 6.Run-on tab 6 is fixed to the baffler of fixed contact.Can fix by a kind of method in fixing such as screw, welding or rivet.Insulation board 7 below the run-on tab 6 provides protection at electric arc for fixed contact 1.Run-on tab 6 is used fastener 8 and is fixed to fixed contact.Run-on tab 6 is positioned at electric current and flows into the parallel plane (referring to Fig. 6) of circuit.
Fig. 3 shows the basic fixed contact assembly.It comprises fixed contact 1, and the electric current that flows into circuit from electric current enters into circuit-breaker, and fixed contact 1 is divided into two branches 2 and 3 as shown in the figure.Branch engages at contact point 4, and contact point is brazed to the inclined arm 5 of fixed contact.The inclined arm of fixed contact is provided for fixedly run-on tab 6.Run-on tab 6 is fixed to the inclined arm of fixed contact.Can fix by a kind of method in fixing such as screw, welding or rivet.Insulation board 7 below the run-on tab provides protection at electric arc for fixed contact.Run-on tab is used fastener 8 and is fixed to fixed contact.As shown in Figure 6, the plane of the relative electric current inflow of run-on tab circuit acutangulates.
In above-mentioned two embodiment 1 and 2, the angle between run-on tab and the fixed contact surface can be spent between 60 degree 0 and change, as shown in Figure 6.
In the prior art, by being arranged on (patent No.EP0621615A1) the gas medium extinguish arcs that plastic components produced above the fixed contact.But in the utility model, use and during short circuit, do not produce insulation board 7 extinguish arcs of any gas, thereby can obtain required breaking capacity.
In the foregoing description 1 and 2, run-on tab 6 can be used screw and be fixed to fixed contact 1 (Fig. 2 and 3), is perhaps fixed (Fig. 7) or welding (Fig. 8) by rivet.
The fixed contact that is used for low voltage switchgear of the present utility model can be used as a part and the support level arc chamber thereon of adapter system.
Claims (8)
1. circuit-breaker, it comprises:
Fixed contact, run-on tab and insulation board;
It is characterized in that wherein said fixed contact comprises:
Baffler;
Contact point;
Fixed contact branch;
Wherein fixed contact branch engages at contact point, and contact point is fixed to the baffler of fixed contact, and simultaneously described run-on tab also is fixed on the baffler of fixed contact and is positioned on the contact point, and described insulation board is positioned at below the described run-on tab.
2. circuit-breaker according to claim 1 is characterized in that described fixed contact branches into two.
3. circuit-breaker according to claim 1 is characterized in that described contact point is fixed to described baffler by brazing.
4. according to the described circuit-breaker of any one claim among the claim 1-3, it is characterized in that described baffler is flat.
5. according to the described circuit-breaker of any one claim among the claim 1-3, it is characterized in that described baffler is what tilt.
6. circuit-breaker according to claim 1 is characterized in that becoming between described run-on tab and the fixed contact surface angle between the 0-60 degree.
7. circuit-breaker according to claim 1 is characterized in that described run-on tab is fixed on the described fixed contact by rivet.
8. circuit-breaker according to claim 1 is characterized in that described run-on tab is soldered on the described fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420059303 CN2731692Y (en) | 2004-05-24 | 2004-05-24 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420059303 CN2731692Y (en) | 2004-05-24 | 2004-05-24 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731692Y true CN2731692Y (en) | 2005-10-05 |
Family
ID=35052017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420059303 Expired - Lifetime CN2731692Y (en) | 2004-05-24 | 2004-05-24 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731692Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044388A (en) * | 2011-01-14 | 2011-05-04 | 江苏辉能电气有限公司 | Static contact structure of moulded case circuit breaker |
| CN102074906A (en) * | 2010-12-13 | 2011-05-25 | 上海安越电气工程技术有限公司 | Transformer neutral point combination electric equipment |
| CN102568883A (en) * | 2010-12-20 | 2012-07-11 | 施耐德电器工业公司 | Method for attaching an arcing horn to a stationary contact mounting in an electrical switchgear, and electrical switchgear |
| CN102568883B (en) * | 2010-12-20 | 2016-12-14 | 施耐德电器工业公司 | Arcing horn is fixed to the method on static contact support and electric switch equipment |
| CN107799369A (en) * | 2017-11-30 | 2018-03-13 | 厦门理工学院 | The static contact component and arc quenching system of a kind of burn-out proof |
| CN114360980A (en) * | 2021-12-31 | 2022-04-15 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
-
2004
- 2004-05-24 CN CN 200420059303 patent/CN2731692Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074906A (en) * | 2010-12-13 | 2011-05-25 | 上海安越电气工程技术有限公司 | Transformer neutral point combination electric equipment |
| CN102074906B (en) * | 2010-12-13 | 2012-11-28 | 上海安越电气工程技术有限公司 | Transformer neutral point combination electric equipment |
| CN102568883A (en) * | 2010-12-20 | 2012-07-11 | 施耐德电器工业公司 | Method for attaching an arcing horn to a stationary contact mounting in an electrical switchgear, and electrical switchgear |
| CN102568883B (en) * | 2010-12-20 | 2016-12-14 | 施耐德电器工业公司 | Arcing horn is fixed to the method on static contact support and electric switch equipment |
| CN102044388A (en) * | 2011-01-14 | 2011-05-04 | 江苏辉能电气有限公司 | Static contact structure of moulded case circuit breaker |
| CN107799369A (en) * | 2017-11-30 | 2018-03-13 | 厦门理工学院 | The static contact component and arc quenching system of a kind of burn-out proof |
| CN107799369B (en) * | 2017-11-30 | 2020-01-10 | 厦门理工学院 | Ablation-resistant static contact assembly and arc extinguishing system |
| CN114360980A (en) * | 2021-12-31 | 2022-04-15 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
| CN114360980B (en) * | 2021-12-31 | 2022-11-04 | 浙江华楷电气有限公司 | Arc extinguishing device and circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140524 Granted publication date: 20051005 |