CN202796478U - Silver-based composite contact for relay - Google Patents
Silver-based composite contact for relay Download PDFInfo
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- CN202796478U CN202796478U CN 201220392382 CN201220392382U CN202796478U CN 202796478 U CN202796478 U CN 202796478U CN 201220392382 CN201220392382 CN 201220392382 CN 201220392382 U CN201220392382 U CN 201220392382U CN 202796478 U CN202796478 U CN 202796478U
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- silver
- composite contact
- base composite
- alloy layer
- contact
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Abstract
The utility model relates to the field of an electric switch, in particular to an electric contact. A silver-based composite contact for a relay comprises a silver base body made of a silver material and a silver alloy layer, wherein the silver alloy layer is an AgNi layer, and the surface of the sliver alloy layer is fused and fixed together with the surface of the silver base body. The silver-based composite contact has better resistance to erosion and anti-welding property. Therefore, the silver-based composite contact has better make-and-break property, also saves the material usage of the silver material when improving the contact property, and greatly reduces the cost.
Description
Technical field
The utility model relates to a kind of appliance switch field, relates in particular to a kind of electrical contact.
Background technology
Relay is a kind of electronic devices and components that are widely used in national defence, industrial automation, bear the task of switching, isolation, connection and disjunction AC/DC, the quality of its operating state, directly have influence on the operation of whole electrical system, contact is as the significant points of relay, be the key factor that affects relay on-off ability and reliability, its performance directly affects reliability, the stability of relay.
Ag has very important effect at relay in the contact field, yet easily oxidation under the Yin Changwen forms oxide layer, easily affect the break-make performance, and the resistance fusion welding of silver is not fine, and silver is noble metal, and the use of silver contact has increased the cost of electrical contact.
The utility model content
The purpose of this utility model is to provide relay money base composite contact, solves above technical problem.
The technical problem that the utility model solves can realize by the following technical solutions:
Relay money base composite contact comprises a silver matrix of being made by ag material, it is characterized in that also comprise an ag alloy layer, described ag alloy layer is the AgNi layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
In concrete the use, with silver matrix as the solder side of relay with the money base composite contact, with the AgNi layer as working face (contact layer).Weld layer is used for and copper tactile bridge fusion.Because have unlimited solid molten characteristics between silver and the copper, be convenient to firm fusion.AgNi shows to have the advantages that fusing point is higher, contact resistance stable, process moulding excellence through long term test for existing material.With the AgNi layer as working face (contact layer), so that have preferably erosion resisting and resistance fusion welding energy.Thereby has a preferably break-make performance.
Adopt said structure, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
Described ag alloy layer adopts the powder metallurgic method preparation.Described ag alloy layer adopts AgNi30, and namely the mass percentage content of silver is 70% in the described ag alloy layer.
The striped that the surface of described silver matrix is provided with horizontally set or vertically arranges, described striped form and help the weldering lines, so that guarantee welding quality.And described striped is conducive to the dispersion of electric arc, is conducive to arc extinguishing.
Utilize special equipment to make described striped in the surface pressure of silver matrix in the production process, the surface below of described silver matrix is provided with the described striped of interval setting or the described striped of crisscross setting.
The section of described silver matrix is rectangular, and is rectangular with the section of the described ag alloy layer of described silver matrix fusion.
Described silver matrix adopts the rectangle silver strip.Long 45 ~ the 60mm of described rectangle silver strip; Wide 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
Described silver matrix can adopt trapezoidal silver strip.Described trapezoidal silver strip upper base 5 ~ 15mm; 45 ~ 60mm goes to the bottom; High 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
Described silver matrix can also adopt circular silver strip.Described circular silver strip diameter 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
Beneficial effect: owing to adopt technique scheme, the utlity model has preferably erosion resisting and resistance fusion welding energy, thereby have preferably break-make performance.When improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
Description of drawings
Fig. 1 is generalized section of the present utility model;
Fig. 2 is a kind of structural representation of silver matrix of the present utility model;
Fig. 3 is the another kind of structural representation of silver matrix of the present utility model;
Fig. 4 is the another kind of structural representation of silver matrix of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, Fig. 2, relay money base composite contact comprises a silver matrix 1 of being made by ag material, also comprises an ag alloy layer 2, and ag alloy layer 2 is the AgNi layer; Ag alloy layer 2 surfaces are fixed with silver matrix 1 surperficial powder pressing.
In concrete the use, with silver matrix 1 as the weld layer of relay with the money base composite contact, with the AgNi layer as working face (contact layer).Weld layer is used for and copper tactile bridge fusion.AgNi shows to have the advantages that fusing point is higher, contact resistance stable, process moulding excellence through long term test for existing material.With the AgNi layer as working face (contact layer), so that have preferably erosion resisting and resistance fusion welding energy.Thereby has a preferably break-make performance.Ag alloy layer 2 adopts the powder metallurgic method preparation.Ag alloy layer 2 adopts AgNi30, and namely the mass percentage content of silver is 70% in the ag alloy layer 2.
The striped that the surface of silver matrix 1 is provided with horizontally set or vertically arranges, striped form and help the weldering lines, so that guarantee welding quality.And striped is conducive to the dispersion of electric arc, is conducive to arc extinguishing.
Utilize special equipment to make striped in the surface pressure of silver matrix 1 in the production process, the surface of silver matrix 1 is provided with the striped of interval setting or the striped of crisscross setting.
Silver matrix 11(1) section is rectangular, with silver matrix 11(1) fusion ag alloy layer 22(2) section rectangular.
With reference to Fig. 2, the silver matrix 1 preferential rectangle silver strip that adopts.The rectangle silver strip is long 60mm, wide 10mm, thick 0.8mm, ag alloy layer 2 thick 0.7mm preferably.With reference to Fig. 3, silver matrix 1 can adopt trapezoidal silver strip.Trapezoidal silver strip upper base 10mm, the 40mm that goes to the bottom, high 10mm, thick 0.8mm, ag alloy layer 2 thick 0.7mm.With reference to Fig. 4, silver matrix 1 can also adopt circular silver strip.Circular silver strip diameter 10mm, thick 0.8mm, ag alloy layer 2 thick 0.7mm.Adopt said structure, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (9)
1. relay money base composite contact comprises a silver matrix of being made by ag material, it is characterized in that also comprise an ag alloy layer, described ag alloy layer is the AgNi layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
2. relay according to claim 1 money base composite contact is characterized in that, the surface below of described silver matrix is provided with the striped of vertical setting.
3. relay according to claim 2 money base composite contact is characterized in that, the section of described silver matrix is rectangular, and is rectangular with the section of the described ag alloy layer of described silver matrix fusion.
4. relay according to claim 3 money base composite contact is characterized in that, described silver matrix adopts the rectangle silver strip.
5. relay according to claim 4 money base composite contact is characterized in that, the long 45 ~ 60mm of described rectangle silver strip; Wide 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
6. relay according to claim 3 money base composite contact is characterized in that, described silver matrix adopts trapezoidal silver strip.
7. relay according to claim 6 money base composite contact is characterized in that, described trapezoidal silver strip upper base 5 ~ 15mm; 45 ~ 60mm goes to the bottom; High 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
8. relay according to claim 3 money base composite contact is characterized in that, described silver matrix adopts circular silver strip.
9. relay according to claim 8 money base composite contact is characterized in that, described circular silver strip diameter 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Described silver alloy bed thickness 0.5 ~ 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392382 CN202796478U (en) | 2012-08-09 | 2012-08-09 | Silver-based composite contact for relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392382 CN202796478U (en) | 2012-08-09 | 2012-08-09 | Silver-based composite contact for relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796478U true CN202796478U (en) | 2013-03-13 |
Family
ID=47823688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220392382 Expired - Fee Related CN202796478U (en) | 2012-08-09 | 2012-08-09 | Silver-based composite contact for relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796478U (en) |
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2012
- 2012-08-09 CN CN 201220392382 patent/CN202796478U/en not_active Expired - Fee Related
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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: 20130313 Termination date: 20150809 |
|
| EXPY | Termination of patent right or utility model |