CN202957170U - Isolating switch with arc extinction structure - Google Patents
Isolating switch with arc extinction structure Download PDFInfo
- Publication number
- CN202957170U CN202957170U CN 201220674985 CN201220674985U CN202957170U CN 202957170 U CN202957170 U CN 202957170U CN 201220674985 CN201220674985 CN 201220674985 CN 201220674985 U CN201220674985 U CN 201220674985U CN 202957170 U CN202957170 U CN 202957170U
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- CN
- China
- Prior art keywords
- contact
- muffler
- moving
- arc extinction
- isolating switch
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- 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.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses an isolating switch with an arc extinction structure. The isolating switch comprises a movable contact and a stationary contact, wherein a movable arc extinction sheet is arranged at one end of the movable contact, which is in contact with the stationary contact; a stationary arc extinction sheet is arranged on the stationary contact and opposite to the movable arc extinction sheet; and the mutual non-contact of the movable arc extinction sheet and the stationary arc extinction sheet in the separation process of the movable contact from the stationary contact is gradually changed into mutual contact and then into complete non-contact. The isolating switch with the arc extinction structure has the advantages that the movable arc extinction sheet is arranged at one end of the movable contact, which is in contact with the stationary contact, and the stationary arc extinction sheet is arranged on the stationary contact and opposite to the movable arc extinction sheet; and the mutual non-contact of the movable arc extinction sheet and the stationary arc extinction sheet in the separation process of the movable contact from the stationary contact is gradually changed into the mutual contact and then into the complete non-contact, so when the isolating switch is turned off, the transition of current between the movable arc extinction sheet and the stationary arc extinction sheet can be reduced at the instant of separation of the movable contact from the stationary contact, electric arcs are eliminated, and the safety performance of the isolating switch is improved.
Description
Technical field
The utility model relates to electric parts, particularly a kind of isolating switch with extinguishing arc structure.
Background technology
Low-pressure fusing disconnecting switch, due to low cost, advantage stable, easy to maintenance, is widely used in the outlet of bench type step down side.Common low-pressure fusing disconnecting switch, comprise base, is arranged on fixed contact and moving contact on base, and fuse link, be hinged with blade on described moving contact, the other end of blade when switch is closed and fixed contact join, fuse link is fixed between moving contact and connecting plate; Fixed contact and moving contact and connecting plate are arranged on insulated column respectively.In the every day use process, when the electric power personnel need charged disconnection isolating switch, moving contact is breaking away from a flash with fixed contact, be easy to produce electric arc, thereby the contact portion that causes moving contact and fixed contact is burnt, reduce the current lead-through performance of isolating switch, shortened useful life.
The utility model content
The problem that the utility model solves is to provide a kind of isolating switch, solves existing isolating switch and reduces the problem of performance because electric arc occurs.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of have an extinguishing arc structure isolating switch, comprises moving contact and fixed contact, and the end that described moving contact contacts with fixed contact is provided with moving muffler, and the position of the corresponding moving muffler of described fixed contact is provided with quiet muffler; Described moving muffler and quiet muffler the two moving contact with in the fixed contact separation process, by mutually not contacting to fade to, be not in contact with one another, then become fully and do not contact.
Further, described quiet muffler one end is fixed in the terminals row of described fixed contact, and the other end is provided with guiding angle surface.
Further, described moving muffler one end is fixed in described moving contact; The other end grows the blade of described moving contact, and is provided with endways a conducting block.
Further, described conducting block is connected with described moving muffler conduction, and, when moving contact and fixed contact closure, conducting block does not contact with fixed contact.
Compared with prior art, the advantage of technical solutions of the utility model is:
Be provided with moving muffler by the end contacted with fixed contact at described moving contact, in the position of the corresponding moving muffler of described fixed contact, be provided with quiet muffler; And make the two moving contact with in the fixed contact separation process, by mutually not contacting to fade to, be not in contact with one another, become fully and do not contact again, make while disconnecting isolating switch, the moment of separating with fixed contact at moving contact, electric current can reduce from transition between dynamic and static muffler, thereby prevent that electric arc from producing, and improves the security performance of isolating switch.
The accompanying drawing explanation
Fig. 1 is the utility model specific embodiment schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
Fig. 1 is the utility model specific embodiment schematic diagram.As shown in Figure 1, a kind of have an extinguishing arc structure isolating switch, comprises moving contact 1 and fixed contact 2, and the end that described moving contact 1 contacts with fixed contact 2 is provided with moving muffler 11, and the position of described fixed contact 2 corresponding moving mufflers 11 is provided with quiet muffler 21; Described moving muffler 11 and quiet muffler 21 the two moving contact 1 with in fixed contact 2 separation processes, by mutually not contacting to fade to, be not in contact with one another, then become fully and do not contact.
Described moving muffler 11 adopts electric conducting material to make with quiet muffler 21, as metal, and particularly copper material, or carbon brush.
Described quiet muffler 21 1 ends are fixed in the terminals row of described fixed contact 2, and the other end is provided with guiding angle surface 22.The setting of described guiding angle surface 22, be convenient to when closed isolating switch, when moving contact 1 is close to fixed contact 2, moving muffler 11 can dock quiet muffler 21 smoothly, and move along quiet muffler 21, avoid hindering moving contact 1 and moving because moving muffler 11 can not dock with quiet muffler 21, affect the closed procedure of isolating switch.
Described moving muffler 11 1 ends are fixed in described moving contact 1; The other end grows the blade 12 of described moving contact 1, and is provided with endways a conducting block 13.Described conducting block 13 can be also the carbon brush piece for metal derby, is preferably the carbon brush piece; Described conducting block 13 is connected with described moving muffler 11 conductions.Moving muffler 11 grows the setting of moving contact 1 blade 12, has guaranteed when moving contact 1 has just separated with fixed contact 2, and moving muffler 11 still contacts with quiet muffler 21, the driven muffler 11 of electric current and quiet muffler 21 processes; But because moving muffler 11 is less with the contact-making surface of fixed contact 2 than moving contact 1 with the contact-making surface of quiet muffler 21, make moving muffler 11 and the contact resistance of quiet muffler 21 become large, the electric current of flowing through diminishes, thereby effectively prevents from separating with fixed contact 2 because of moving contact 1 the strong electric arc of generation.
Described conducting block 13 is when moving contact 1 and fixed contact 2 are closed, with fixed contact 2, do not contact, make in isolating switch normally closed situation, electric current is from process between fixed contact 2 and moving contact 1, and can, from dynamic and static muffler 11,21 processes, not guarantee the normal operation of isolating switch.
The utility model specific embodiment is described has extinguishing arc structure isolating switch, by the end contacted with fixed contact at described moving contact, is provided with moving muffler, in the position of the corresponding moving muffler of described fixed contact, is provided with quiet muffler; And make the two moving contact with in the fixed contact separation process, by mutually not contacting to fade to, be not in contact with one another, become fully and do not contact again, make while disconnecting isolating switch, the moment of separating with fixed contact at moving contact, electric current can reduce from transition between dynamic and static muffler, thereby prevents that electric arc from producing, and reduced failure rate, improve security performance and the useful life of isolating switch, reduce maintenance cost.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not within breaking away from spirit and scope of the present utility model; can make possible change and modification, the scope that therefore protection range of the present utility model should be defined with the utility model claim is as the criterion.
Claims (4)
1. one kind has extinguishing arc structure isolating switch, comprises moving contact and fixed contact, it is characterized in that, the end that described moving contact contacts with fixed contact is provided with moving muffler, and the position of the corresponding moving muffler of described fixed contact is provided with quiet muffler; Described moving muffler and quiet muffler the two moving contact with in the fixed contact separation process, by mutually not contacting to fade to, be not in contact with one another, then become fully and do not contact.
2. according to claim 1 have an extinguishing arc structure isolating switch, it is characterized in that, described quiet muffler one end is fixed in the terminals row of described fixed contact, and the other end is provided with guiding angle surface.
3. according to claim 1 have an extinguishing arc structure isolating switch, it is characterized in that, described moving muffler one end is fixed in described moving contact; The other end grows the blade of described moving contact, and is provided with endways a conducting block.
4. according to claim 3 have an extinguishing arc structure isolating switch, it is characterized in that, described conducting block is connected with described moving muffler conduction, and, when moving contact and fixed contact closure, conducting block does not contact with fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674985 CN202957170U (en) | 2012-12-10 | 2012-12-10 | Isolating switch with arc extinction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674985 CN202957170U (en) | 2012-12-10 | 2012-12-10 | Isolating switch with arc extinction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957170U true CN202957170U (en) | 2013-05-29 |
Family
ID=48462729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220674985 Expired - Fee Related CN202957170U (en) | 2012-12-10 | 2012-12-10 | Isolating switch with arc extinction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
-
2012
- 2012-12-10 CN CN 201220674985 patent/CN202957170U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500680A (en) * | 2013-10-10 | 2014-01-08 | 德基申（厦门）电气有限公司 | Low-voltage fuse type isolating switch |
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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: 20130529 Termination date: 20201210 |