CN203721589U - Open-type knife switch with arc isolation structure - Google Patents
Open-type knife switch with arc isolation structure Download PDFInfo
- Publication number
- CN203721589U CN203721589U CN201420009870.0U CN201420009870U CN203721589U CN 203721589 U CN203721589 U CN 203721589U CN 201420009870 U CN201420009870 U CN 201420009870U CN 203721589 U CN203721589 U CN 203721589U
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- CN
- China
- Prior art keywords
- arc
- carbon brush
- fixed contact
- moving contact
- knife switch
- 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 discloses an open-type knife switch with an arc isolation structure. The open-type knife switch with the arc isolation structure comprises an insulating bottom plate, an operating handle, a main fixed wiring seat, an auxiliary fixed wiring seat, a moving contact, a rotating shaft and an arc quenching chamber; the moving contact includes a first moving contact sheet and a second moving contact sheet which are of long-strip-shaped structures and are symmetrically arranged at two sides of a main fixed contact; the first moving contact sheet is provided with an extension portion at a communication end; the extension portion is provided with an arc isolation carbon brush adjacent to the arc quenching chamber; and in a switching-on state, the arc isolation carbon brush is in abutting connection with an auxiliary fixed contact. According to the open-type knife switch with the arc isolation structure, based on the traditionally set arc quenching chamber, the carbon brush is adopted, and therefore, if the moving contact and the auxiliary fixed contact generate arc in the switching-on process, the arc quenching chamber can quench the arc, and if residual arc exists, the carbon brush can isolate the residual arc; and in a switching-on state, the arc isolation carbon brush arranged on the moving contact is in abutting connection with the auxiliary fixed contact, and therefore, the arc isolation effect of the carbon brush can be optimized, and it can be ensured that the arc will not damage the moving contact and the auxiliary fixed contact.
Description
Technical field
The utility model relates to a kind of open type knife switch, and more particularly, it relates to a kind of open type knife switch with arc structure.
Background technology
Open type knife switch on market, major part all comprises insulating base, operating grip, main quiet junction block, secondary quiet junction block, moving contact, insulating base comprises installed surface and is placed in the installation through hole of middle part, main quiet junction block and secondary quiet junction block are placed on the installed surface of insulating base, operating grip is provided with connecting axle through the side that the corresponding installed surface of through hole and operating grip is installed, moving contact one end and rotating shaft are articulated and connected, moving contact one end is articulated and connected with main quiet junction block, middle part and the rotating shaft of moving contact are articulated and connected, the other end of the corresponding main quiet junction block of moving contact can be used for connecting or disjunction with the quiet junction block of pair.
Open type knife switch is according to the situation of arc control device, be divided into and have arc control device open type knife switch and without open type knife switch, arc control device comprise some arc extinguishing grid pieces and for connecting the insulation connecting plate of some arc extinguishing grid pieces, on the installed surface of insulating base, corresponding secondary Jing Jiexianzuochu is fixedly installed arc extinguishing seat, and insulation connecting plate and arc extinguishing seat are welded to connect.
At present, this open type knife switch with arc control device on market, conventionally just merely in each dynamic/static contact cooperation place, arc control device are set, after long-term use, or can produce destruction to contact, thereby make the time lengthening of open circuit, affect use safety and the useful life of whole knife switch.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of open type knife switch with arc structure, can protect contact not to be destroyed, and improves useful life and the safety in utilization of whole knife switch.
For achieving the above object, the utility model provides following technical scheme: a kind of open type knife switch with arc structure, comprise insulating base, operating grip, main quiet junction block, secondary quiet junction block, moving contact, rotating shaft and arc control device, main quiet junction block comprises main electrical scheme seat and main fixed contact, secondary quiet junction block comprises secondary junction block and secondary fixed contact, described moving contact comprises the first movable contact spring and the second movable contact spring that are symmetrically placed in main fixed contact both sides, the first movable contact spring is all fixedly connected with main electrical scheme seat with second movable contact spring one end, the connection end that the other end is configured for clamping secondary fixed contact and forms electrical connection, described the first movable contact spring and the second movable contact spring are strip structure setting, and the first movable contact spring is provided with extension in being communicated with end, on extension, be provided with arc carbon brush near arc control device place, when "on" position, arc carbon brush is conflicted and is connected with secondary fixed contact.
By adopting technique scheme, on traditional basis that arc control device are only set, be provided with again carbon brush, if moving head and secondary fixed contact produce electric arc in making process, arc control device can play the effect of arc extinguishing, if there is residual arc to exist, carbon brush can also play the effect of arc; When "on" position, the arc carbon brush being arranged on moving contact is conflicted and is connected with secondary fixed contact, this can play optimization by the arc effect of carbon brush, guarantees that electric arc can not produce destruction to moving contact and secondary fixed contact, improves useful life and the safety in utilization of whole knife switch.
The utility model is further set to: described secondary fixed contact is provided with moving contact locating part.
By adopting technique scheme, in making process, prevent that moving contact from striking secondary junction block and destroying moving contact and secondary junction block in the process of rapid closing, improves useful life and the safety in utilization of whole knife switch.
The utility model is further set to: described extension is provided with bolt, nut, and arc carbon brush is connected by bolt, fastening nuts with extension.
By adopting technique scheme, when arc carbon brush is after long-term use is impaired, can change in time, protect secondary fixed contact and moving contact.
The utility model is further set to: described extension is provided with breach, and arc carbon brush is embedded at indentation, there, and the opposite side of the corresponding secondary fixed contact of extension is provided with connecting plate, and extension is all fixedly connected with connecting plate with arc carbon brush.
By adopting technique scheme, arc carbon brush is unlikely to excessively to highlight in extension surface, makes whole arc structure smooth attractive in appearance, by the setting of connecting plate, extension and arc carbon brush is securely linked together, and stabilized structure is reliable.
Brief description of the drawings
Fig. 1 is the structural representation of the open type knife switch embodiment of the utility model band arc structure;
Fig. 2 is moving contact and the structural representation of secondary fixed contact in "on" position;
Fig. 3 is moving contact and the structural representation of main fixed contact in "on" position.
Embodiment
Referring to figs. 1 through Fig. 3, the open type knife switch embodiment of the utility model band arc structure is described further.
A kind of open type knife switch with arc structure, comprise insulating base 1, operating grip 2, main quiet junction block 3, secondary quiet junction block 4, moving contact 5, rotating shaft 6 and arc control device 7, main quiet junction block 3 comprises main electrical scheme seat 31 and main fixed contact 32, secondary quiet junction block 4 comprises secondary junction block 41 and secondary fixed contact 42, described moving contact 5 comprises the first movable contact spring 51 and the second movable contact spring 52 that are symmetrically placed in main fixed contact 32 both sides, the first movable contact spring 51 is all fixedly connected with main electrical scheme seat 31 with second movable contact spring 52 one end, the connection end that the other end is configured for clamping secondary fixed contact 42 and forms electrical connection, described the first movable contact spring 51 and the second movable contact spring 52 are strip structure setting, and the first movable contact spring 51 is provided with extension 511 in being communicated with end, on extension 511, be provided with arc carbon brush 9 near arc control device 7 places, when "on" position, arc carbon brush 9 is conflicted and is connected with secondary fixed contact 42.
By adopting technique scheme, on traditional basis that arc control device 7 are only set, be provided with again carbon brush, if moving head and secondary fixed contact 42 produce electric arc in making process, arc control device 7 can play the effect of arc extinguishing, if there is residual arc to exist, carbon brush can also play the effect of arc; When "on" position, the arc carbon brush 9 being arranged on moving contact 5 is conflicted and is connected with secondary fixed contact 42, this can play optimization by the arc effect of carbon brush, guarantees that electric arc can not produce destruction to moving contact 5 and secondary fixed contact 42, improves useful life and the safety in utilization of whole knife switch.
Described secondary fixed contact 42 is provided with moving contact locating part 421(and it should be noted that herein, moving contact locating part 421 on described secondary fixed contact 42 can arrange one or two, even multiple, in the time that moving contact locating part 421 at least arranges two, preferred set-up mode is the symmetrical both sides that are placed in secondary fixed contact 42, carries out spacing respectively to the first movable contact spring 51 and the second movable contact spring 52).
By adopting technique scheme, in making process, prevent that moving contact 5 from striking secondary junction block 41 in the process of rapid closing and destroy moving contact 5 and secondary junction block 41, improve useful life and the safety in utilization of whole knife switch.
Described extension 511 is provided with bolt, nut; arc carbon brush 9 is connected and (is it should be noted that herein by bolt, fastening nuts with extension 511; carbon brush can be welded to connect with extension 511; consider that arc carbon brush 9 also can be impaired after long-term use; in order to change in time arc carbon brush 9; protect secondary fixed contact 42 and moving contact 5, the present embodiment is preferred, and arc carbon brush 9 is fixedly connected with extension 511 is detachable).
Described extension 511 is provided with breach 512, arc carbon brush 9 is embedded at breach 512 places, the opposite side of the corresponding secondary fixed contact 42 of extension 511 is provided with connecting plate 8, extension 511 is all fixedly connected with and (it should be noted that herein with connecting plate 8 with arc carbon brush 9, arc carbon brush 9 can directly be fixedly connected with extension 511, for arc carbon brush 9 is unlikely to excessively to highlight in extension 511 surfaces, make whole arc structure smooth attractive in appearance, the present embodiment is preferred, and arc carbon brush 9 and extension 511 achieve a fixed connection by the setting of connecting plate 8).
Claims (4)
1. the open type knife switch with arc structure, comprise insulating base, operating grip, main quiet junction block, secondary quiet junction block, moving contact, rotating shaft and arc control device, main quiet junction block comprises main electrical scheme seat and main fixed contact, secondary quiet junction block comprises secondary junction block and secondary fixed contact, described moving contact comprises the first movable contact spring and the second movable contact spring that are symmetrically placed in main fixed contact both sides, the first movable contact spring is all fixedly connected with main electrical scheme seat with second movable contact spring one end, the connection end that the other end is configured for clamping secondary fixed contact and forms electrical connection, it is characterized in that: described the first movable contact spring and the second movable contact spring are strip structure setting, and the first movable contact spring is provided with extension in being communicated with end, on extension, be provided with arc carbon brush near arc control device place, when "on" position, arc carbon brush is conflicted and is connected with secondary fixed contact.
2. the open type knife switch with arc structure according to claim 1, is characterized in that: described secondary fixed contact is provided with moving contact locating part.
3. the open type knife switch with arc structure according to claim 2, is characterized in that: described extension is provided with bolt, nut, arc carbon brush is connected by bolt, fastening nuts with extension.
4. the open type knife switch with arc structure according to claim 3, it is characterized in that: described extension is provided with breach, arc carbon brush is embedded at indentation, there, and the opposite side of the corresponding secondary fixed contact of extension is provided with connecting plate, and extension is all fixedly connected with connecting plate with arc carbon brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009870.0U CN203721589U (en) | 2014-01-07 | 2014-01-07 | Open-type knife switch with arc isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009870.0U CN203721589U (en) | 2014-01-07 | 2014-01-07 | Open-type knife switch with arc isolation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721589U true CN203721589U (en) | 2014-07-16 |
Family
ID=51160726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420009870.0U Expired - Fee Related CN203721589U (en) | 2014-01-07 | 2014-01-07 | Open-type knife switch with arc isolation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334556A (en) * | 2021-12-28 | 2022-04-12 | 常熟市国瑞科技股份有限公司 | Switching device |
-
2014
- 2014-01-07 CN CN201420009870.0U patent/CN203721589U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334556A (en) * | 2021-12-28 | 2022-04-12 | 常熟市国瑞科技股份有限公司 | Switching device |
| CN114334556B (en) * | 2021-12-28 | 2024-01-12 | 常熟市国瑞科技股份有限公司 | Switching device |
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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: 20140716 Termination date: 20170107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |