CN202093994U - Composite contact for circuit breaker - Google Patents
Composite contact for circuit breaker Download PDFInfo
- Publication number
- CN202093994U CN202093994U CN201120156694XU CN201120156694U CN202093994U CN 202093994 U CN202093994 U CN 202093994U CN 201120156694X U CN201120156694X U CN 201120156694XU CN 201120156694 U CN201120156694 U CN 201120156694U CN 202093994 U CN202093994 U CN 202093994U
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- silver
- circuit breaker
- composite contact
- alloy layer
- contact
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Abstract
The utility model relates to the field of electric appliance switches, in particular to an electric contact for a circuit breaker. A composite contactor for the circuit breaker comprises a silver substrate and a silver alloy layer, wherein the silver substrate is made of silver materials, the silver alloy layer is a AgNi30C3 layer, and the lower surface of the silver alloy layer is fused and fixed with the upper surface of the silver substrate. The composite contact has good on-off performance, better erosion resistance and fusion welding resistance performance, the contact performance is improved, simultaneously, the silver material consumption is also saved, and the cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of appliance switch field, relates in particular to a kind of electrical contact of circuit breaker.
Background technology
Circuit breaker is widely used a kind of device for switching in the Industry Control, is used for connecting and disjunction normal duty electric current and overload electric current.Electrical contact is the core parts of circuit breaker, is used for realizing the connection and the disjunction of circuit, is the key factor that influences circuit breaker make-break capacity and reliability, and its performance directly affects reliability, the stability of circuit breaker.
Ag has very important effect at circuit breaker in the contact field, yet easy oxidation under the Yin Changwen forms oxide layer, easily influence 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 a kind of composite contact that is used for circuit breaker, solves above technical problem.
The technical problem that the utility model solved can realize by the following technical solutions:
The composite contact that is used for circuit breaker 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 AgNi30C3 layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
In concrete the use, with the weld layer of silver matrix as the composite contact that is used for circuit breaker, with the AgNi30C3 layer as working face (contact layer).Weld layer is used for fusing with the copper bridge that touches.Because have unlimited solid molten characteristics between silver and the copper, be convenient to firm fusion.AgNi30C3 shows to have the advantages that antioxygenic property is good, fusing point is higher relatively for existing material through long term test.As working face (contact layer), antioxygenic property is good with the AgNi30C3 layer, thereby has break-make performance preferably, and the characteristics that fusing point is higher make to have erosion resisting and resistance fusion welding energy preferably.
Adopt said structure, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
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 break-make performance good, erosion resisting and resistance fusion welding energy preferably, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
Description of drawings
Fig. 1 is a 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, be used for the composite contact of circuit breaker, comprise a silver matrix 1 of making by ag material, also comprise an ag alloy layer 2, ag alloy layer 2 is the AgNi30C3 layer.Ag alloy layer 2 surface below and the fusion of surface, silver matrix 1 top are fixing.In concrete the use, with the weld layer of silver matrix 1 as the composite contact that is used for circuit breaker, with the AgNi30C3 layer as working face (contact layer).Weld layer is used for fusing with the copper bridge that touches.Because have unlimited solid molten characteristics between silver and the copper, be convenient to firm fusion.AgNi30C3 shows to have the advantages that antioxygenic property is good, fusing point is higher relatively for existing material through long term test.As working face (contact layer), antioxygenic property is good with the AgNi30C3 layer, thereby has break-make performance preferably, and the characteristics that fusing point is higher make to have erosion resisting and resistance fusion welding energy preferably.
Adopt said structure, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
The section of silver matrix 1 is rectangular, and is rectangular with the section of the ag alloy layer 2 of silver matrix 1 fusion.
With reference to Fig. 2, the silver matrix 1 preferred rectangle silver strip that adopts.The preferably long 60mm of rectangle silver strip, wide 10mm, thick 0.8mm, ag alloy layer 2 thick 0.7mm.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.
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 the foregoing description 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 (8)
1. the composite contact that is used for circuit breaker 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 AgNi30C3 layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
2. the composite contact that is used for circuit breaker according to claim 1 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.
3. the composite contact that is used for circuit breaker according to claim 2 is characterized in that, described silver matrix adopts the rectangle silver strip.
4. the composite contact that is used for circuit breaker according to claim 3 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.
5. the composite contact that is used for circuit breaker according to claim 2 is characterized in that described silver matrix adopts trapezoidal silver strip.
6. the composite contact that is used for circuit breaker according to claim 5 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.
7. the composite contact that is used for circuit breaker according to claim 2 is characterized in that described silver matrix adopts circular silver strip.
8. the composite contact that is used for circuit breaker according to claim 7 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 |
|---|---|---|---|
| CN201120156694XU CN202093994U (en) | 2011-05-17 | 2011-05-17 | Composite contact for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120156694XU CN202093994U (en) | 2011-05-17 | 2011-05-17 | Composite contact for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093994U true CN202093994U (en) | 2011-12-28 |
Family
ID=45369044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120156694XU Expired - Fee Related CN202093994U (en) | 2011-05-17 | 2011-05-17 | Composite contact for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093994U (en) |
-
2011
- 2011-05-17 CN CN201120156694XU patent/CN202093994U/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: 20111228 Termination date: 20150517 |
|
| EXPY | Termination of patent right or utility model |