CN102386000A - Self-elastic contact - Google Patents
Self-elastic contact Download PDFInfo
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- CN102386000A CN102386000A CN201110385779XA CN201110385779A CN102386000A CN 102386000 A CN102386000 A CN 102386000A CN 201110385779X A CN201110385779X A CN 201110385779XA CN 201110385779 A CN201110385779 A CN 201110385779A CN 102386000 A CN102386000 A CN 102386000A
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- contact
- self
- elastic contact
- copper
- fingertip
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Abstract
The invention discloses a self-elastic contact which comprises a cup-shaped body, wherein a plurality of grooves are axially formed on the inner wall of the body to form contactors; and two annular inward protrusions are formed in the circumferential direction of the inner wall of the body, arranged in parallel on the front and the back sides respectively and integrally molded with the body. The invention is characterized in that the front annular protrusion is made of copper-tungsten alloy, and the back annular protrusion is made of copper-chromium alloy. Based on the integration of the main contactor and an arc contactor on the same one self-elastic contact, the self-elastic contact combines the functions of two types of contactors. Besides, the self-elastic contact has a very simple structure.
Description
Technical field
The invention 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 understanding background technology of the present invention certain help is arranged.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, have the self-reliance contact of main contact function and arcing contact function concurrently.
The present invention 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 present invention has 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 fixed contact of the present invention, 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 present invention 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 a structural representation of the present invention.
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 |
|---|---|---|---|
| CN201110385779XA CN102386000A (en) | 2011-11-29 | 2011-11-29 | Self-elastic contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385779XA CN102386000A (en) | 2011-11-29 | 2011-11-29 | Self-elastic contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102386000A true CN102386000A (en) | 2012-03-21 |
Family
ID=45825315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385779XA Pending CN102386000A (en) | 2011-11-29 | 2011-11-29 | Self-elastic contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102386000A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916488A (en) * | 2014-03-13 | 2015-09-16 | 上海正昊电力科技有限公司 | Disconnecting switch |
| CN105206438A (en) * | 2015-10-14 | 2015-12-30 | 桂林航天电子有限公司 | Pressing type travel switch resisting severe environment |
| CN105448549A (en) * | 2015-11-25 | 2016-03-30 | 河南平芝高压开关有限公司 | Contact assembly and grounding switch using the same, metal-enclosed switchgear |
| CN109859962A (en) * | 2018-12-28 | 2019-06-07 | 宁波中迪机械有限公司 | Self-help contact terminal seat |
| CN110706966A (en) * | 2019-09-06 | 2020-01-17 | 平高集团有限公司 | Arc contact and circuit breaker |
| CN112735898A (en) * | 2020-12-01 | 2021-04-30 | 平高集团有限公司 | Arc contact and circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229704A (en) * | 1998-03-23 | 1999-09-29 | 西安理工大学 | Verticle sintering method for copper/tungsten-chromium copper integral probe |
| US20090166168A1 (en) * | 2007-12-28 | 2009-07-02 | Mitsubishi Electric Corporation | Grounding switch |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | Self-elastic contact |
| CN202339845U (en) * | 2011-11-29 | 2012-07-18 | 浙江开关厂有限公司 | Self-help contact terminal |
-
2011
- 2011-11-29 CN CN201110385779XA patent/CN102386000A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229704A (en) * | 1998-03-23 | 1999-09-29 | 西安理工大学 | Verticle sintering method for copper/tungsten-chromium copper integral probe |
| US20090166168A1 (en) * | 2007-12-28 | 2009-07-02 | Mitsubishi Electric Corporation | Grounding switch |
| CN201622941U (en) * | 2010-01-12 | 2010-11-03 | 正泰电气股份有限公司 | Self-elastic contact |
| CN202339845U (en) * | 2011-11-29 | 2012-07-18 | 浙江开关厂有限公司 | Self-help contact terminal |
Non-Patent Citations (2)
| Title |
|---|
| 《华通技术》 19950515 张洁等 铜钨（70）自力型触头的研制 13-18 1 , 第2期 * |
| 张洁等: "铜钨（70）自力型触头的研制", 《华通技术》, no. 2, 15 May 1995 (1995-05-15), pages 13 - 18 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916488A (en) * | 2014-03-13 | 2015-09-16 | 上海正昊电力科技有限公司 | Disconnecting switch |
| CN105206438A (en) * | 2015-10-14 | 2015-12-30 | 桂林航天电子有限公司 | Pressing type travel switch resisting severe environment |
| CN105206438B (en) * | 2015-10-14 | 2017-06-16 | 桂林航天电子有限公司 | A kind of push type travel switch of adverse environment resistant |
| CN105448549A (en) * | 2015-11-25 | 2016-03-30 | 河南平芝高压开关有限公司 | Contact assembly and grounding switch using the same, metal-enclosed switchgear |
| CN105448549B (en) * | 2015-11-25 | 2018-10-02 | 河南平芝高压开关有限公司 | Contact assembly and earthing switch, the metal sealing switch device for using the component |
| CN109859962A (en) * | 2018-12-28 | 2019-06-07 | 宁波中迪机械有限公司 | Self-help contact terminal seat |
| CN110706966A (en) * | 2019-09-06 | 2020-01-17 | 平高集团有限公司 | Arc contact and circuit breaker |
| CN110706966B (en) * | 2019-09-06 | 2021-10-12 | 平高集团有限公司 | Arc contact and circuit breaker |
| CN112735898A (en) * | 2020-12-01 | 2021-04-30 | 平高集团有限公司 | Arc contact and circuit breaker |
| CN112735898B (en) * | 2020-12-01 | 2023-09-29 | 平高集团有限公司 | Arc contact and circuit breaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |