CN202042382U - Composite contact for small-size contactor - Google Patents
Composite contact for small-size contactor Download PDFInfo
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- CN202042382U CN202042382U CN2011201566992U CN201120156699U CN202042382U CN 202042382 U CN202042382 U CN 202042382U CN 2011201566992 U CN2011201566992 U CN 2011201566992U CN 201120156699 U CN201120156699 U CN 201120156699U CN 202042382 U CN202042382 U CN 202042382U
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- silver
- contact
- alloy layer
- composite contact
- contactor
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Abstract
The utility model relate to the field of electrical equipment switches, in particular to a contact for a small-size contactor, which comprises a silver base body made of silver materials and a silver alloy layer, and the silver alloy layer is an AgC (5) layer. The lower surface of the silver alloy layer is fixed with the upper surface of the sliver base body in melt mode. The composite contact for the small-size contactor has low contact resistance, good conductivity, better erosion resistance and better fusion welding resistance. Performance of the contact is improved, and simultaneously silver materials are saved, and accordingly 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 small-sized 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 that is used for small-sized contactor, 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 small-sized contactor comprises a silver matrix of being made by ag material, it is characterized in that, also comprises an ag alloy layer, and described ag alloy layer is AgC (a 5) 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 small-sized contactor, with AgC (5) 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.AgC (5) is existing material, shows through long term test, have contact resistance low, conduct electricity very well, characteristics that fusing point is higher relatively.As working face (contact layer), can form low and stable contact resistance with AgC (5) layer, conduct electricity very well, and because have the higher characteristics of fusing point, so have good resistance fusion welding energy.
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 2～the 5mm of described rectangle silver strip; Wide 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
Described silver matrix can adopt trapezoidal silver strip.Described trapezoidal silver strip upper base 2～5mm; 3～6mm goes to the bottom; High 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
Described silver matrix can also adopt circular silver strip.Described circular silver strip diameter 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
Beneficial effect: owing to adopt technique scheme, the utlity model has contact resistance low, conduct electricity very well, 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 small-sized contactor, comprise a silver matrix 1 of making by ag material, also comprise an ag alloy layer 2, ag alloy layer 2 is AgC (a 5) 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 small-sized contactor, with AgC (5) 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.AgC (5) is existing material, shows through long term test, have contact resistance low, conduct electricity very well, characteristics that fusing point is higher relatively.As working face (contact layer), can form low and stable contact resistance with AgC (5) layer, conduct electricity very well, and because have the higher characteristics of fusing point, so have good resistance fusion welding energy.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 4.5mm of rectangle silver strip, wide 4.5mm, thick 0.8mm, arc surface action 1.5mm.With reference to Fig. 3, silver matrix 1 can adopt trapezoidal silver strip.Trapezoidal silver strip upper base 4.5mm, the 5.5mm that goes to the bottom, high 4.5mm, thick 0.8mm, arc surface action 1.5mm.With reference to Fig. 4, silver matrix 1 can also adopt circular silver strip.Circular silver strip diameter 4.5mm, thick 0.8mm, 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 that is used for small-sized contactor comprises a silver matrix of being made by ag material, it is characterized in that, also comprises an ag alloy layer, and described ag alloy layer is AgC (a 5) layer;
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 2～5mm of described rectangle silver strip; Wide 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
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 2～5mm; 3～6mm goes to the bottom; High 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
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 2～5mm; Thick 0.2～1.5mm; Described arc surface action 0.5～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201566992U CN202042382U (en) | 2011-05-17 | 2011-05-17 | Composite contact for small-size contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201566992U CN202042382U (en) | 2011-05-17 | 2011-05-17 | Composite contact for small-size contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202042382U true CN202042382U (en) | 2011-11-16 |
Family
ID=44969818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201566992U Expired - Fee Related CN202042382U (en) | 2011-05-17 | 2011-05-17 | Composite contact for small-size contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202042382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779082A (en) * | 2014-01-13 | 2015-07-15 | 施耐德电器工业公司 | Electric contact device and low-voltage single-pole phase unit incorporating such an electrical contact device |
-
2011
- 2011-05-17 CN CN2011201566992U patent/CN202042382U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779082A (en) * | 2014-01-13 | 2015-07-15 | 施耐德电器工业公司 | Electric contact device and low-voltage single-pole phase unit incorporating such an electrical contact device |
| CN104779082B (en) * | 2014-01-13 | 2019-02-22 | 施耐德电器工业公司 | It is in electrical contact equipment and the low-voltage monopole phase element equipped with this electrical contact equipment |
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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: 20111116 Termination date: 20150517 |
|
| EXPY | Termination of patent right or utility model |