CN202067677U - Composite contact of contactor - Google Patents
Composite contact of contactor Download PDFInfo
- Publication number
- CN202067677U CN202067677U CN2011201567957U CN201120156795U CN202067677U CN 202067677 U CN202067677 U CN 202067677U CN 2011201567957 U CN2011201567957 U CN 2011201567957U CN 201120156795 U CN201120156795 U CN 201120156795U CN 202067677 U CN202067677 U CN 202067677U
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- Prior art keywords
- silver
- composite contact
- contactor
- alloy layer
- model
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Abstract
The utility model relates to the appliance switch field, especially to a composite contact of a contactor. The composite contact of the contactor includes a silver base made of silver material, and a silver alloy layer. The silver alloy layer is a layer of AgSnO2InO3. The lower surface of the silver alloy layer is fused and connected with the upper surface of the silver base in a fixed manner. The composite contact of the contactor in the utility model has good erosion resisting performance and fusion welding resisting performance. By using the utility model, the performance of the contact is improved. At the same time, the consumption of the silver material is reduced. Thus, the cost is lowered substantially.
Description
Technical field
The utility model relates to a kind of appliance switch field, relates in particular to a kind of electrical contact of contactor.
Background technology
Contactor is widely used a kind of device for switching in the Industry Control, compares with other device for switching, has and can act frequently, and the energy break-make is electric current greatly, can realize the characteristics such as control of certain distance.Electrical contact is the core parts of contactor, is the key factor that influences contactor make-break capacity and reliability, and its performance directly affects reliability, the stability of contactor.Therefore contactor requires electrical contact to have favorable conductive, heat conductivility; Low and stable contact resistance; High erosion resisting, resistance fusion welding energy etc.
Ag has very important effect at contactor in the contact field, yet easy oxidation under the Yin Changwen forms oxide layer, easily influence electric conductivity, 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 of contactor, solves above technical problem.
The technical problem that the utility model solved can realize by the following technical solutions:
A kind of composite contact of contactor 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 AgSnO
2In
2O
3Layer;
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, with AgSnO as a kind of composite contact of contactor
2In
2O
3Layer is 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.AgSnO
2In
2O
3Be existing material, show through long term test that it is higher relatively to have a fusing point, conductive effect is characteristics relatively preferably.With AgSnO
2In
2O
3Layer conducts electricity very well as working face (contact layer), and because have the higher characteristics of fusing point, so have erosion resisting, 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, is arc surface with the section of the described ag alloy layer of described silver matrix fusion, and described arc surface is to the top of described ag alloy layer projection.The advantage that is designed to arc surface is to avoid the composite contact generation point discharge of contactor.
Described silver matrix adopts the rectangle silver strip.Long 16～the 20mm of described rectangle silver strip; Wide 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
Described silver matrix can adopt trapezoidal silver strip.Described trapezoidal silver strip upper base 10～14mm; 16～20mm goes to the bottom; High 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
Described silver matrix can also adopt circular silver strip.Described circular silver strip diameter 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
Beneficial effect:, the utlity model has erosion resisting, resistance fusion welding energy preferably owing to adopt technique scheme.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, a kind of composite contact of contactor comprises a silver matrix 1 of being made by ag material, also comprises an ag alloy layer 2, and ag alloy layer 2 is AgSnO
2In
2O
3 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, with AgSnO as a kind of composite contact of contactor
2In
2O
3Layer is 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.AgSnO
2In
2O
3Be existing material, show through long term test that it is higher relatively to have a fusing point, conductive effect is characteristics relatively preferably.With AgSnO
2In
2O
3Layer conducts electricity very well as working face (contact layer), and because have the higher characteristics of fusing point, so have erosion resisting, 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, is arc surface with the section of the ag alloy layer 2 of silver matrix 1 fusion, and arc surface is to the top of ag alloy layer 2 projection.The advantage that is designed to arc surface is to avoid the composite contact generation point discharge of contactor.
With reference to Fig. 2, the silver matrix 1 preferred rectangle silver strip that adopts.The preferably long 18mm of rectangle silver strip, wide 14mm, thick 1.5mm, arc surface action 1.5mm.With reference to Fig. 3, silver matrix 1 can adopt trapezoidal silver strip.The preferred upper base 12mm of trapezoidal silver strip, the 18mm that goes to the bottom, high 14mm, thick 1.5mm, arc surface action 1.5mm.With reference to Fig. 4, silver matrix 1 can also adopt circular silver strip.The preferred diameter 14mm of circular silver strip, thick 1.5mm, arc surface action 1.5mm.
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 of a contactor 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 AgSnO
2In
2O
3Layer;
Described ag alloy layer surface below and the surface fusion of described silver matrix top are fixing.
2. the composite contact of a kind of contactor according to claim 1 is characterized in that, the section of described silver matrix is rectangular, is arc surface with the section of the described ag alloy layer of described silver matrix fusion, and described arc surface is to the top of described ag alloy layer projection.
3. the composite contact of a kind of contactor according to claim 2 is characterized in that, described silver matrix adopts the rectangle silver strip.
4. the composite contact of a kind of contactor according to claim 3 is characterized in that, the long 16～20mm of described rectangle silver strip; Wide 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
5. the composite contact of a kind of contactor according to claim 2 is characterized in that, described silver matrix adopts trapezoidal silver strip.
6. the composite contact of a kind of contactor according to claim 5 is characterized in that, described trapezoidal silver strip upper base 10～14mm; 16～20mm goes to the bottom; High 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
7. the composite contact of a kind of contactor according to claim 2 is characterized in that, described silver matrix adopts circular silver strip.
8. the composite contact of a kind of contactor according to claim 7 is characterized in that, described circular silver strip diameter 12～16mm; Thick 0.5～2mm; Described arc surface action 1.5～2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201567957U CN202067677U (en) | 2011-05-17 | 2011-05-17 | Composite contact of contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201567957U CN202067677U (en) | 2011-05-17 | 2011-05-17 | Composite contact of contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202067677U true CN202067677U (en) | 2011-12-07 |
Family
ID=45061534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201567957U Expired - Fee Related CN202067677U (en) | 2011-05-17 | 2011-05-17 | Composite contact of contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202067677U (en) |
-
2011
- 2011-05-17 CN CN2011201567957U patent/CN202067677U/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: 20111207 Termination date: 20150517 |
|
| EXPY | Termination of patent right or utility model |