CN205211606U - Electrical contact - Google Patents
Electrical contact Download PDFInfo
- Publication number
- CN205211606U CN205211606U CN201521009888.1U CN201521009888U CN205211606U CN 205211606 U CN205211606 U CN 205211606U CN 201521009888 U CN201521009888 U CN 201521009888U CN 205211606 U CN205211606 U CN 205211606U
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- China
- Prior art keywords
- electrical contact
- contacting layer
- matrix
- electric contacting
- screwed hole
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- Expired - Fee Related
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Abstract
The utility model relates to an electrical contact. Electrical contact includes the base member and sets up the electrical contact layer on the base member, the electrical contact layer is fixed through threaded connection on the base member. The electrical contact layer leads to to be fixed on the base member removablely, has guaranteed that the complex is firm between electrical contact layer and the base member, and contact resistance is little, and energy losses is low, when there are wearing and tearing on the electrical contact layer, can only change the electrical contact layer, the base member can also continue to dismantle and recycles, has prolonged electrical contact's life, the cost is reduced.
Description
Technical field
The utility model relates to a kind of electrical contact.
Background technology
Electric contacts is device for switching core component, be responsible for the work such as electrical equipment connection, disjunction, water conservancy diversion, its performance directly affects the global reliability of the conducting system such as electrical equipment, electronics work, stability, accuracy and useful life, ensures that the key of electric contacts function admirable is research and development and the preparation of new material.At present the research and apply of contact material is become to the important topic in the fields such as electric power, automation, communication, precision electronic device.
The structure of existing electrical contact generally comprises metallic matrix and compound and is arranged at electric contacting layer on metallic matrix, and wherein, the material of metallic matrix is generally copper, and electric contacting layer is copper-tungsten.Compound between this traditional electric contacting layer and metallic matrix is all generally carry out compound by operations such as first pressing, sintering, multiple pressures, compound is firm not, easily there is complex defect in the composite surface of the two, causes the contact resistance of composite surface to increase, there is the problem that electric energy loss is low.In addition, must integral replacing be carried out when the electric contacting layer of this electrical contact weares and teares, affect the useful life of electrical contact entirety, add cost.
Utility model content
The purpose of this utility model is to provide that a kind of electric energy loss is little, the electrical contact of long service life.
For achieving the above object, the technical scheme of the utility model electrical contact is: electrical contact comprises matrix and is arranged on the electric contacting layer on matrix, and described electric contacting layer is threaded connection to be fixed on the matrix.
Described electric contacting layer comprises the first electric contacting layer and the second electric contacting layer that are screwed onto the upper and lower two ends of matrix respectively.
Described first electric contacting layer is provided with the first screw rod, described second electric contacting layer is provided with the second screw rod, the two ends up and down of described matrix are respectively equipped with the first screwed hole and the second screwed hole, the first screw rod and the first screwed hole threaded engagement, the second screw rod and the second screwed hole threaded engagement.
The axial line of described first screwed hole and the second screwed hole is on same straight line.
The material of described matrix is yellow gold.
The silver content of described matrix is below 55wt%.
The material of described electric contacting layer is fine silver.
Surface-coated after matrix and electric contacting layer assemble has coating.
Coating is rich silver layer, and the inner disperse of rich silver layer has TiC particle.
In coating, TiC grain diameter is 0.1 ~ 3 micron, and coating layer thickness is 50 ~ 300 microns.
The beneficial effects of the utility model are: electric contacting layer is threaded connection and is detachably fixed on matrix, and ensure that between electric contacting layer and matrix, compound is firm, contact resistance is little, and electric energy loss is low; When electric contacting layer has wearing and tearing, only can change electric contacting layer, matrix can also continue dismounting and recycle, and extends the useful life of electrical contact, reduces cost.
Further, matrix adopts yellow gold, saves the use of silver, also has the feature that hardness is high, mar proof is good simultaneously.
Further, be coated with rich silver layer outside matrix and electric contacting layer, there is TiC particle rich silver layer inside.Carbide particle is arranged in rich silver layer, substantially increases the density of alloy, intensity and hardness, enhances the resistance to arc erosion of alloy substrate and anti-melting welding ability.Both can ensure that electrical contact had good arc extinguishing ability, turn increase the density of electrical contact, hardness and intensity simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electrical contact.
Embodiment
Below in conjunction with accompanying drawing, execution mode of the present utility model is described further.
The specific embodiment of electrical contact of the present utility model, as shown in Figure 1, electrical contact comprise metal matrix 1 and respectively compound be arranged on first electric contacting layer 2 and second electric contacting layer 3 at the two ends up and down of matrix 1, the downside of the first electric contacting layer 2 is provided with the first screw rod 21, the upside of the second electric contacting layer 3 is provided with the second screw rod 31, the upper end of matrix 1 is provided with for the first screwed hole with the first screw rod 21 threaded engagement, and the lower end of matrix 1 is provided with for the second screwed hole with the second screw rod 31 threaded engagement.First electric contacting layer 2 and the second electric contacting layer 3 are fixed on matrix 1 respectively by the mode be threaded.
In the present embodiment, the first screwed hole on matrix 1 and the axial line of the second screwed hole are on same straight line.Silver is desirable feedstock prepared by electric contacts, but due to expensive, causes production cost higher.Copper is that the good alternative metals of silver can be greatly cost-saving.The material of matrix 1 adopts yellow gold, and the silver content of yellow gold matrix is 55wt%(percentage by weight) below, the material of the first electric contacting layer 2 and the second electric contacting layer 3 is fine silver.Surface-coated after the assembling of matrix 1, first electric contacting layer 2, second electric contacting layer 3 has coating, coating is rich silver layer, the disperse of TiC uniform particles is inner at rich silver layer, namely coating material composition is silver and TiC(titanium carbide) particle, wherein TiC grain diameter is 0.1 ~ 3 micron, and coating layer thickness is 50 ~ 300 microns.Carbide particle is arranged in rich silver layer, substantially increases the density of alloy substrate, intensity and hardness, enhances the resistance to arc erosion of alloy and anti-melting welding ability.
In other embodiments, can also an electric contacting layer be only set on matrix.
Claims (5)
1. electrical contact, comprises matrix and is arranged on the electric contacting layer on matrix, it is characterized in that: described electric contacting layer is threaded connection to be fixed on the matrix; Described electric contacting layer comprises the first electric contacting layer and the second electric contacting layer that are screwed onto the upper and lower two ends of matrix respectively; Described first electric contacting layer is provided with the first screw rod, described second electric contacting layer is provided with the second screw rod, the two ends up and down of described matrix are respectively equipped with the first screwed hole and the second screwed hole, the first screw rod and the first screwed hole threaded engagement, the second screw rod and the second screwed hole threaded engagement.
2. electrical contact according to claim 1, is characterized in that: the axial line of described first screwed hole and the second screwed hole is on same straight line.
3. electrical contact according to claim 1 and 2, is characterized in that: the material of described matrix is yellow gold.
4. electrical contact according to claim 1 and 2, is characterized in that: the material of described electric contacting layer is fine silver.
5. according to the electrical contact of claim 1 or 2, it is characterized in that: the surface-coated after matrix and electric contacting layer assemble has coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009888.1U CN205211606U (en) | 2015-12-08 | 2015-12-08 | Electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009888.1U CN205211606U (en) | 2015-12-08 | 2015-12-08 | Electrical contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205211606U true CN205211606U (en) | 2016-05-04 |
Family
ID=55849306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009888.1U Expired - Fee Related CN205211606U (en) | 2015-12-08 | 2015-12-08 | Electrical contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205211606U (en) |
-
2015
- 2015-12-08 CN CN201521009888.1U patent/CN205211606U/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: 20160504 Termination date: 20161208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |