CN1702789A - Heavy current contact with two-step contact - Google Patents
Heavy current contact with two-step contact Download PDFInfo
- Publication number
- CN1702789A CN1702789A CN 200410018572 CN200410018572A CN1702789A CN 1702789 A CN1702789 A CN 1702789A CN 200410018572 CN200410018572 CN 200410018572 CN 200410018572 A CN200410018572 A CN 200410018572A CN 1702789 A CN1702789 A CN 1702789A
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- China
- Prior art keywords
- contact
- water conservancy
- conservancy diversion
- tight
- static
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Abstract
This invention relates to large current contact probe with two steps, which is improved on the large current probe. The invention comprises dynamic and static probes separately fixed on the contact points of dynamic and static contact slices, wherein, the dynamic slice is composed of two elastic branches with anti-arc contact point and flow guiding contact point; the static contact slice is relative located with anti-arc contact point and flow guiding contact point. The gap between the contact points is less than the gap between one pair of anti-arc contact points.
Description
Technical field
The present invention relates to electric switch, particularly to the improvement of large-current electric structure of contact terminal.
Background technology
Existing switch comprises devices such as various relays, contactor, employing be that pair of contact is formed a path switching circuit.Because the anti-electric arc that the electric shock material has is as tungsten contact; The good conductivity that has is as silver contact.For the are-tight property and the conductivity that make the contact are taken into account relatively, adopting powder metallurgy method that two class materials are mixed together at present uses, silver-cadmium oxide, silver-nickel, silver-tungsten, silver-graphitic etc. are arranged, but the are-tight property of this material is than homogenous material difference, take place easily also in the use that slider material splashes and transfer phenomena, be that slider material is ablated, influence the life-span of electrical equipment.
Summary of the invention
The object of the invention is to provide a kind of the have good are-tight property and the large current contact of conductivity, to prolong the electrical endurance of device.
The solution of the present invention is: the present invention includes movable contact spring and static contact, and be separately fixed at contact on movable contact spring and the static contact, movable contact spring is made up of two rubber-like branches, be respectively equipped with are-tight contact and water conservancy diversion contact above, opposite position is provided with are-tight contact and water conservancy diversion contact on the static contact, and the gap between a pair of water conservancy diversion contact is less than the gap between a pair of are-tight contact.
Advantage of the present invention is: because the gap between a pair of water conservancy diversion contact is less than the gap between a pair of are-tight contact, are-tight contact is early than the water conservancy diversion engage contacts during switch motion, be later than the water conservancy diversion contact separation, electric arc is created between the are-tight contact, electric current then mainly by the conduction of water conservancy diversion contact, has prolonged the electrical endurance of device.
Description of drawings
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings below.
1 are-tight contact in the accompanying drawing, 2 water conservancy diversion contacts, 3 movable contact springs, 4 static contacts.
Embodiment
As shown in the figure, movable contact spring 3 is made up of two rubber-like branches, is respectively equipped with are-tight contact 1 and water conservancy diversion contact 2 above, and opposite position is provided with are-tight contact 1 and water conservancy diversion contact 2 on the static contact 4,
Adopt tungsten point as are-tight contact 1 among the embodiment, the fine silver contact is as water conservancy diversion contact 2, and movable contact spring 3 is formed by stacking by two rubber-like phosphorus bronze sheet, form two branches, wherein go up slice a fixing are-tight contact 1, fixing water conservancy diversion contact 2 on the following sheet, fixed contact is corresponding to be fixed on the static contact 4.One end of two phosphorus bronze sheet in the movable contact spring 3 is fixed together, but other end resilient separation, and the gap between a pair of water conservancy diversion contact 2 is less than the gap between a pair of are-tight contact 1.
When contact engages and since are-tight contact to the gap between 1 less than the water conservancy diversion contact to 2, this is connected earlier the contact, has this moment electric arc to produce, the water conservancy diversion contact is also connected 2 thereafter, circuit is finished ON Action.
When contact separates because the elastic force effect of phosphorus bronze sheet, after separate water conservancy diversion contact 2, the separation that just lags behind of are-tight contact 1, thereby during separation electric arc again in 1 generation in are-tight contact.
When switching device moves, it is between tungsten point that electric arc all is created in are-tight contact 1, not fragile because tungsten point has good arc resistance, electric current is the shunting of fine silver contact by water conservancy diversion contact 2 mainly then, makes the existing good are-tight property of contact have good conductivity again.
Claims (3)
- In two steps the contact large current contact, comprise movable contact spring (3) and static contact (4), and be separately fixed at contact on movable contact spring (3) and the static contact (4), it is characterized in that: movable contact spring (3) is made up of two rubber-like branches, be respectively equipped with are-tight contact (1) and water conservancy diversion contact (2) above, static contact (4) is gone up opposite position are-tight contact (1) and water conservancy diversion contact (2) is set, and the gap between a pair of water conservancy diversion contact (2) is less than the gap between a pair of are-tight contact (1).
- 2. the large current contact of contact in two steps as claimed in claim 1, it is characterized in that: are-tight contact (1) adopts tungsten point.
- 3. the large current contact of contact in two steps as claimed in claim 1, it is characterized in that: water conservancy diversion contact (2) adopt silver contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018572 CN1702789A (en) | 2004-05-24 | 2004-05-24 | Heavy current contact with two-step contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018572 CN1702789A (en) | 2004-05-24 | 2004-05-24 | Heavy current contact with two-step contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1702789A true CN1702789A (en) | 2005-11-30 |
Family
ID=35632460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018572 Pending CN1702789A (en) | 2004-05-24 | 2004-05-24 | Heavy current contact with two-step contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1702789A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280352A (en) * | 2013-05-17 | 2013-09-04 | 大全集团有限公司 | Switch contact structure |
| CN105097330A (en) * | 2014-05-07 | 2015-11-25 | 苏州飞腾电器有限公司 | Dual-power change-over switch with novel contact structure |
| CN107869416A (en) * | 2016-09-27 | 2018-04-03 | 北京佩特来电器有限公司 | A kind of auxiliary meshing type starter |
| CN108447740A (en) * | 2018-06-02 | 2018-08-24 | 宁波赛特勒电子有限公司 | A kind of relay |
| CN108520849A (en) * | 2018-06-02 | 2018-09-11 | 宁波赛特勒电子有限公司 | A kind of new type of relay |
-
2004
- 2004-05-24 CN CN 200410018572 patent/CN1702789A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280352A (en) * | 2013-05-17 | 2013-09-04 | 大全集团有限公司 | Switch contact structure |
| CN105097330A (en) * | 2014-05-07 | 2015-11-25 | 苏州飞腾电器有限公司 | Dual-power change-over switch with novel contact structure |
| CN105097330B (en) * | 2014-05-07 | 2017-09-19 | 苏州飞腾电器有限公司 | Dual-power transfer switch |
| CN107869416A (en) * | 2016-09-27 | 2018-04-03 | 北京佩特来电器有限公司 | A kind of auxiliary meshing type starter |
| CN107869416B (en) * | 2016-09-27 | 2024-01-05 | 北京佩特来电器有限公司 | Auxiliary meshing type starter |
| CN108447740A (en) * | 2018-06-02 | 2018-08-24 | 宁波赛特勒电子有限公司 | A kind of relay |
| CN108520849A (en) * | 2018-06-02 | 2018-09-11 | 宁波赛特勒电子有限公司 | A kind of new type of relay |
| CN108447740B (en) * | 2018-06-02 | 2024-04-19 | 宁波赛特勒电子有限公司 | Relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |