CN202339845U - Self-help contact terminal - Google Patents
Self-help contact terminal Download PDFInfo
- Publication number
- CN202339845U CN202339845U CN2011204826968U CN201120482696U CN202339845U CN 202339845 U CN202339845 U CN 202339845U CN 2011204826968 U CN2011204826968 U CN 2011204826968U CN 201120482696 U CN201120482696 U CN 201120482696U CN 202339845 U CN202339845 U CN 202339845U
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- Prior art keywords
- contact
- self
- cup
- copper
- utility
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- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a self-help contact terminal comprising a cup-shaped body, wherein a plurality of recesses are arranged in the axial direction of the inner wall of the cup-shaped body to form contact fingers, two circles of inward annular projections are arranged in the circumferential direction of the inner wall of the cup-shaped body, and the annular projections are arranged to be parallel to each other in tandem; and the front circle is copper-tungsten alloy and the latter ring is copper-chromium alloy. According to the utility model, a main contact finger and an arched contact finger are integrated on the same self-help contact terminal to finish the functions of two contact terminals, and the structure is very simple.
Description
Technical field
The utility model belongs to the high voltage switchgear technical field, particularly, is a kind of self-reliance contact.
Background technology
The structure of contact terminal of switchgear major loop has Mume flower contact, self-reliance contact, watchband contact, helical spring contact etc.; Wherein the self-reliance contact is to rely on the back fingertip that closes a floodgate to be out of shape the contact that the elastic deformation force who produces provides contact stress, has characteristics simple in structure, reliable operation.When the self-reliance contact is used as the main contact of switchgear major loop, require the conductance of contact high, so contact material is generally selected the higher chrome copper of conductivity for use, but its shortcoming is not anti-electric arc calcination.When the self-reliance contact is used as the striking contact, require anti-electric arc calcination, so contact material can be selected copper-tungsten for use, but its conductivity is lower.For the contact of general isolating switch, do not produce owing to there is electric arc when being in major loop and folding, contact material is generally selected the higher material of conductivity for use.But such as the bus isolating switch in double bus scheme and the bypass connection, also must be used for conversion line, this inevitable requirement folding bus switching current (being commonly called as circulation).During folding bus switching current, the arcing time is longer, uses the higher chromium-copper of conductivity like contact material; Can make contact burning more serious, use copper-tungsten, though contact burning is light like contact material; But during normal power-up; Because the copper-tungsten conductivity is lower, resistance is bigger during energising, also is unfavorable; In other words, need concentrate the two advantage and avoid its shortcoming.
In the prior art; The isolating switch of folding bus switching current main contact be the self-reliance contact that the high watchband contact of conductance, helical spring contact or the chromium-copper material that adopts high conductivity are processed; And have the comparatively complicated striking contact of structure separately, prevent the main contact scaling loss.Obviously, such solution is too complicated and uneconomical.
In addition, CN201622941 relates to the self-reliance contact, for the background technology of understanding the utility model certain help is arranged.
The utility model content
The purpose of the utility model provides a kind of simple in structure, has the self-reliance contact of main contact function and arcing contact function concurrently.
The utility model adopts following technical scheme: the self-reliance contact, comprise a cup-shaped body, thereby the some grooves of being axially arranged with of its inwall form fingertips, inwall be circumferentially with the inside annular projection of two circles, one in front and one in back be arranged in parallel, and with the body global formation; Wherein front one circle is copper-tungsten, and back one circle is chromiumcopper.
It is protruding that the utility model has been established two loops, and front one circle copper-tungsten is as arc fingertip, and back one circle chromiumcopper conductivity is high, the available fingertip of deciding, and body itself also can adopt chromiumcopper simultaneously.Many axial grooves make annular ring form fingertip one by one, during combined floodgate moving contact are produced contact pressure.When isolating switch closed a floodgate, moving contact was approaching to the fixed contact of the utility model, gap breakdown discharge (when referring to folding bus switching current); Because the arc fingertip of fixed contact outside, electric arc burns on arc fingertip, along with moving contact moves forward; Moving contact contacts with arc fingertip; Electric arc disappears, and contacts with the main fingertip of fixed contact at last, accomplishes and closes a floodgate.During separating brake, moving contact separates with the main fingertip of fixed contact earlier, because arc fingertip does not also separate; So main fingertip can not produce electric arc,, separate just to produce electric arc with arc fingertip along with the continuation campaign of moving contact; After dynamic/static contact reached certain distance, arc extinction reached gate-dividing state at last.
It is thus clear that the utility model is integrated main fingertip and arc fingertip on same self-reliance contact, can accomplish the function of two kinds of contacts simultaneously, and structure is very simple.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Referring to accompanying drawing.The self-reliance contact of present embodiment comprises a cup-shaped body 1, is evenly equipped with some axial grooves 2 on the wall of cup, and these grooves extend to outer wall from inwall, becomes penetrating groove; The inwall front portion is furnished with two circle inwardly protruded rings 3 and 4, and ring is 3 and 4 parallel to each other, wherein encircle 3 be positioned at cup the top, encircle 4 and encircling after 3; Ring 3 itself is the part of body, and ring 4 is sintered to one with body when blank.The material of ring 3 is a copper-tungsten, and the material of ring 4 and cup body 1 is a chromiumcopper.
Claims (1)
1. the self-reliance contact comprises a cup-shaped body, thereby the some grooves of being axially arranged with of its inwall form fingertips, it is characterized in that: inwall be circumferentially with the inside annular projection of two circles, one in front and one in back be arranged in parallel, and with the body global formation; Wherein front one circle is copper-tungsten, and back one circle is chromiumcopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204826968U CN202339845U (en) | 2011-11-29 | 2011-11-29 | Self-help contact terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204826968U CN202339845U (en) | 2011-11-29 | 2011-11-29 | Self-help contact terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339845U true CN202339845U (en) | 2012-07-18 |
Family
ID=46488534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204826968U Expired - Fee Related CN202339845U (en) | 2011-11-29 | 2011-11-29 | Self-help contact terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202339845U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386000A (en) * | 2011-11-29 | 2012-03-21 | 浙江开关厂有限公司 | Self-elastic contact |
| CN102820583A (en) * | 2012-08-10 | 2012-12-12 | 许继集团有限公司 | Conductive connector for high voltage electrical equipment |
| CN106252151A (en) * | 2016-08-31 | 2016-12-21 | 北京双杰电气股份有限公司 | The contact apparatus of vacuum interrupter and vacuum interrupter |
-
2011
- 2011-11-29 CN CN2011204826968U patent/CN202339845U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386000A (en) * | 2011-11-29 | 2012-03-21 | 浙江开关厂有限公司 | Self-elastic contact |
| CN102820583A (en) * | 2012-08-10 | 2012-12-12 | 许继集团有限公司 | Conductive connector for high voltage electrical equipment |
| CN106252151A (en) * | 2016-08-31 | 2016-12-21 | 北京双杰电气股份有限公司 | The contact apparatus of vacuum interrupter and vacuum interrupter |
| CN106252151B (en) * | 2016-08-31 | 2019-10-01 | 北京双杰电气股份有限公司 | The contact apparatus and vacuum interrupter of vacuum interrupter |
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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: 20120718 Termination date: 20171129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |