CN202796480U - Silver-base composite contact for moulded case circuit breaker - Google Patents
Silver-base composite contact for moulded case circuit breaker Download PDFInfo
- Publication number
- CN202796480U CN202796480U CN 201220392058 CN201220392058U CN202796480U CN 202796480 U CN202796480 U CN 202796480U CN 201220392058 CN201220392058 CN 201220392058 CN 201220392058 U CN201220392058 U CN 201220392058U CN 202796480 U CN202796480 U CN 202796480U
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- silver
- base composite
- breaker
- plastic casing
- composite contact
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Abstract
The utility model relates to the field of electric appliance switch, in particular to an electrical contact of a moulded case circuit breaker. The silver-base composite contact for a moulded case circuit breaker comprises a silver substrate which is made of a silver material, and further comprises a silver alloy layer, wherein the silver alloy layer is a silver zinc oxide (AgZnO) layer; and the surface of the silver alloy layer is melted and fixed with the surface of the silver substrate. The silver-base composite contact for the moulded case circuit breaker has characteristics of being excellent in welding resistance and arc erosion resistance, low and stable in contact resistance and the like; and the silver-base composite contact for the moulded case circuit breaker, while improving performance of the contact, also quite 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 of breaker of plastic casing.
Background technology
Breaker of plastic casing 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 breaker of plastic casing, is used for realizing connection and the disjunction of circuit, is the key factor that affects breaker of plastic casing make-break capacity and reliability, and its performance directly affects reliability, the stability of breaker of plastic casing.
Ag has very important effect at breaker of plastic casing 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 a kind of money base composite contact for breaker of plastic casing, solves above technical problem.
The technical problem that the utility model solves can realize by the following technical solutions:
The money base composite contact that is used for breaker of plastic casing 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 AgZnO 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 weld layer for the money base composite contact of breaker of plastic casing, with the AgZnO 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.AgZnO has the advantage that anti-scaling loss performance is good, contact resistance is low for existing material, and more environmental protection.As working face (contact layer), have good resistance fusion welding, anti-arc erosion, the low and stable characteristics such as contact resistance so that be used for the money base composite contact of breaker of plastic casing with the AgZnO layer.
Described ag alloy layer adopts the internal oxidation preparation, adopts the ag alloy layer material of internal oxidation preparation fine and close, and the oxide particle is tiny, and anti-arc erosion, life-span are long.
The striped that the surface below 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 striped of interval setting or the 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.
Adopt said structure, when improving the contact performance, also saved the consumption of ag material, greatly reduce cost.
Beneficial effect: owing to adopt technique scheme, the utlity model has good resistance fusion welding, anti-arc erosion, low and stable characteristics such as contact resistance.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, be used for the money base composite contact of breaker of plastic casing, comprise a silver matrix 1 of being made by ag material, also comprise an ag alloy layer 2, ag alloy layer 2 is the AgZnO layer; Ag alloy layer 2 surface below and the fusion of surface, silver matrix 1 top are fixing.
In concrete the use, with silver matrix 1 as the weld layer for the money base composite contact of breaker of plastic casing, with the AgZnO 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.AgZnO has the advantage that anti-scaling loss performance is good, contact resistance is low for existing material, and more environmental protection.As working face (contact layer), have good resistance fusion welding, good anti-arc erosion, the low and stable characteristics such as contact resistance so that be used for the money base composite contact of breaker of plastic casing with the AgZnO layer.
The surface of silver matrix 1 is provided with striped, and striped forms and helps 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.
With reference to Fig. 1, 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, silver matrix 1 adopts the rectangle silver strip.Long 45 ~ the 60mm of rectangle silver strip; Wide 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Ag alloy layer 2 thick 0.5 ~ 1.2mm.With reference to Fig. 3, silver matrix 1 can adopt trapezoidal silver strip.Trapezoidal silver strip upper base 5 ~ 15mm; 45 ~ 60mm goes to the bottom; High 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Ag alloy layer 2 thick 0.5 ~ 1.2mm.With reference to Fig. 4, silver matrix 1 can also adopt circular silver strip.Circular silver strip diameter 5 ~ 15mm; Thick 0.5 ~ 1.2mm; Ag alloy layer 2 thick 0.5 ~ 1.2mm.
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 (10)
1. the money base composite contact that is used for breaker of plastic casing 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 AgZnO layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
2. the money base composite contact for breaker of plastic casing according to claim 1 is characterized in that, the surface below of described silver matrix is provided with the striped of vertical setting.
3. the money base composite contact for breaker of plastic casing according to claim 1 is characterized in that, the surface below of described silver matrix is provided with the striped of crisscross setting.
4. according to claim 2 or 3 described money base composite contacts for breaker of plastic casing, it is characterized in that the section of described silver matrix is rectangular, rectangular with the section of the described ag alloy layer of described silver matrix fusion.
5. the money base composite contact for breaker of plastic casing according to claim 4 is characterized in that, described silver matrix adopts the rectangle silver strip.
6. the money base composite contact for breaker of plastic casing according to claim 5 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.
7. the money base composite contact for breaker of plastic casing according to claim 4 is characterized in that described silver matrix adopts trapezoidal silver strip.
8. the money base composite contact for breaker of plastic casing according to claim 7 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.
9. the money base composite contact for breaker of plastic casing according to claim 4 is characterized in that described silver matrix adopts circular silver strip.
10. the money base composite contact for breaker of plastic casing according to claim 9 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 201220392058 CN202796480U (en) | 2012-08-09 | 2012-08-09 | Silver-base composite contact for moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392058 CN202796480U (en) | 2012-08-09 | 2012-08-09 | Silver-base composite contact for moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796480U true CN202796480U (en) | 2013-03-13 |
Family
ID=47823690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220392058 Expired - Fee Related CN202796480U (en) | 2012-08-09 | 2012-08-09 | Silver-base composite contact for moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796480U (en) |
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2012
- 2012-08-09 CN CN 201220392058 patent/CN202796480U/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 |