CN204242823U - Silver graphite alloy electrical contact - Google Patents
Silver graphite alloy electrical contact Download PDFInfo
- Publication number
- CN204242823U CN204242823U CN201420786623.1U CN201420786623U CN204242823U CN 204242823 U CN204242823 U CN 204242823U CN 201420786623 U CN201420786623 U CN 201420786623U CN 204242823 U CN204242823 U CN 204242823U
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- CN
- China
- Prior art keywords
- bulge loop
- annular cavity
- composite surface
- metallic matrix
- contacting layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000956 alloy Substances 0.000 title claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 35
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 230000000295 complement effect Effects 0.000 claims abstract description 4
- 230000007547 defect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 2
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical group [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Contacts (AREA)
Abstract
The utility model discloses silver-colored graphite alloy electrical contact, include metallic matrix and the electric contacting layer of mutual compound, the back side of described metallic matrix is provided with the translot that dispels the heat at least together, the composite surface center of described electric contacting layer is provided with round table-like center projection to lower convexity, the composite surface of described electric contacting layer is provided with the first bulge loop with center projection coaxial inner conductor relative to the avris of center projection, the composite surface of described metallic matrix is provided with the first annular cavity with the upper and lower inserting of the first bulge loop, the first spare region is formed between the diapire of the first bulge loop and the diapire of the first annular cavity, the composite surface of described electric contacting layer is provided with the lower abaculus of multiple regular hexahedron relative to the first bulge loop lateral lower convexity, the composite surface of described metallic matrix is provided with the inward recess with the clamped complementary fit of lower abaculus.The utility model has the advantages that: reasonable in design, long service life and contact resistance is little, composite surface bond strength is high.
Description
Technical field
The utility model relates to a kind of electrical contact, specifically refers to a kind of silver-colored graphite alloy electrical contact.
Background technology
Copper-graphite alloy electrical contact has excellent resistance to electric arc ability because of it, and is widely used in circuit breaker.The structure of existing copper-graphite alloy electrical contact generally comprises metallic matrix and compound and is arranged at electric contacting layer on metallic matrix, and wherein metallic matrix is for being generally copper, and electric contacting layer is copper-tungsten.When this traditional copper-graphite alloy contact uses in circuit breaker, the surface of the middle section of electric contacting layer can because of arc erosion and break-make impact pressure and gradually indent, directly affects the useful life of electrical contact.
In addition, the operations such as the compound between the electric contacting layer of this traditional silver-colored graphite alloy contact and metallic matrix is all generally first pressing, sintering, multiple pressure carry out compound, due to the difference of electric contacting layer and metal matrix material performance, and always there is complex defect in the composite surface of the two, cause the contact resistance of composite surface large, reduce the useful life of silver-nickel contact.
Summary of the invention
The purpose of this utility model is the shortcoming and defect existed to overcome prior art, and provides a kind of reasonable in design, long service life, and the silver-colored graphite alloy electrical contact that contact resistance is little, composite surface bond strength is high.
For achieving the above object, the technical solution of the utility model is the metallic matrix and the electric contacting layer that include mutual compound, the back side of described metallic matrix is provided with the translot that dispels the heat at least together, the composite surface center of described electric contacting layer is provided with round table-like center projection to lower convexity, the composite surface of described electric contacting layer is provided with the first bulge loop with center projection coaxial inner conductor relative to the avris of center projection, the longitudinal section of this first bulge loop is isosceles trapezoid, the composite surface of described metallic matrix is provided with the central cavity with center projection phase scarf complementation, the composite surface of described metallic matrix is provided with the first annular cavity with the upper and lower inserting of the first bulge loop, the longitudinal section of this first annular cavity is isosceles trapezoid, and the sidewall of two of this first annular cavity isosceles and the sidewall of two isosceles of the first bulge loop lead mutually, slippage coordinates, and the height of the first bulge loop is lower than the degree of depth of the first annular cavity, the first spare region is formed between the diapire of the first bulge loop and the diapire of the first annular cavity,
The composite surface of described electric contacting layer is provided with the lower abaculus of multiple regular hexahedron relative to the first bulge loop lateral lower convexity, the composite surface of described metallic matrix is provided with the inward recess with the clamped complementary fit of lower abaculus.
By this setting, because electric contacting layer is metal alloy material, therefore itself there is certain elasticity, and the first spare region by forming between the first bulge loop of this setting and the second annular cavity, the spring deformation region of the electric contacting layer central area that this first spare region is formed, therefore, in electrical contact use procedure, contact-impact converts the deformation of electric contacting layer central area in the first spare region to, directly can reduce electrical contact contact-impact in use thus to the wearing and tearing on electric contacting layer surface, improve its useful life.In addition, by arranging the scarf structure of multiple lower abaculus and inward recess, this draw bail not only drastically increases combined strength bination, and due to its composite surface divided, therefore, also greatly lowly reduce complex defect, improve the electrical property of silver-nickel contact.
Further setting is that the composite surface of described electric contacting layer has the second bulge loop with the first bulge loop coaxial inner conductor relative to the arranged outside of the first bulge loop, the composite surface of described metallic matrix is provided with the second annular cavity with the upper and lower inserting of the second bulge loop, the longitudinal section of this second annular cavity is isosceles trapezoid, and the sidewall of two of this second annular cavity isosceles and the sidewall of two isosceles of the second bulge loop lead mutually, slippage coordinates, and the height of the second bulge loop is lower than the degree of depth of the second annular cavity, the second spare region is formed between the diapire of the second bulge loop and the diapire of the second annular cavity, the degree of depth of the second described annular cavity is arranged lower than the degree of depth of the first annular cavity.By the structure of this setting, to the spring-compensating better effects if of the contact-impact of electrical contact, further increase the useful life of electrical contact.
In sum, the utility model has the advantages that: reasonable in design, long service life and contact resistance is little, composite surface bond strength is high.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model embodiment structural representation;
The A-A cutaway view of Fig. 2 Fig. 1;
The I portion enlarged drawing of Fig. 3 Fig. 2;
Fig. 4 the utility model embodiment STRUCTURE DECOMPOSITION figure;
The exploded view at another visual angle of Fig. 5 the utility model embodiment.
Embodiment
Below by embodiment, the utility model being specifically described, only for being further described the utility model, the restriction to the utility model protection range can not being interpreted as.
Embodiment of the present utility model as Figure 1-5, include metallic matrix 1 and the electric contacting layer 2 of mutual compound, the back side of described metallic matrix 1 is provided with at least one heat radiation translot 11, the material that metallic matrix 1 described in the present embodiment is is fine copper, the material of described electric contacting layer 2 is silver-colored graphite alloy, in addition, in addition, the composite surface center of the electric contacting layer 2 described in the present embodiment is provided with round table-like center projection 21 to lower convexity, the composite surface 2 of described electric contacting layer is provided with the first bulge loop 22 with center projection 21 coaxial inner conductor relative to the avris of center projection 21, the longitudinal section of this first bulge loop 22 is isosceles trapezoid, the composite surface of described metallic matrix 1 is provided with the central cavity 12 with the complementation of center projection 21 phase scarf, the composite surface of described metallic matrix 1 is provided with the first annular cavity 13 with the first bulge loop about 22 inserting, the longitudinal section of this first annular cavity 13 is isosceles trapezoid, and the sidewall of two of this first annular cavity 13 isosceles and the sidewall of two isosceles of the first bulge loop 22 lead mutually, slippage coordinates, and the height of the first bulge loop 22 is lower than the degree of depth of the first annular cavity 13, the first spare region 14 is formed between the diapire of the first bulge loop 22 and the diapire of the first annular cavity 13.
In addition, in order to improve the useful life of electrical contact further, the composite surface of described electric contacting layer 2 has the second bulge loop 23 with the first bulge loop coaxial inner conductor relative to the arranged outside of the first bulge loop 22, the composite surface of described metallic matrix 1 is provided with the second annular cavity 15 with the second bulge loop about 23 inserting, the longitudinal section of this second annular cavity 15 is isosceles trapezoid, and the sidewall of two of this second annular cavity 15 isosceles and the sidewall of two isosceles of the second bulge loop 23 lead mutually, slippage coordinates, and the height of the second bulge loop 23 is lower than the degree of depth of the second annular cavity 15, the second spare region 16 is formed between the diapire of the second bulge loop 23 and the diapire of the second annular cavity 15, the degree of depth of the second described annular cavity 15 is arranged lower than the degree of depth of the first annular cavity 13.
In addition, in order to improve combined strength bination, reduce contact-making surface resistance, the composite surface of described electric contacting layer 2 is provided with the lower abaculus 24 of multiple regular hexahedron relative to the first bulge loop 22 lateral lower convexity, the composite surface of described metallic matrix 1 is provided with the inward recess 17 with the clamped complementary fit of lower abaculus 24.
Claims (2)
1. a silver-colored graphite alloy electrical contact, include metallic matrix and the electric contacting layer of mutual compound, the back side of described metallic matrix is provided with the translot that dispels the heat at least together, it is characterized in that: the composite surface center of described electric contacting layer is provided with round table-like center projection to lower convexity, the composite surface of described electric contacting layer is provided with the first bulge loop with center projection coaxial inner conductor relative to the avris of center projection, the longitudinal section of this first bulge loop is isosceles trapezoid, the composite surface of described metallic matrix is provided with the central cavity with center projection phase scarf complementation, the composite surface of described metallic matrix is provided with the first annular cavity with the upper and lower inserting of the first bulge loop, the longitudinal section of this first annular cavity is isosceles trapezoid, and the sidewall of two of this first annular cavity isosceles and the sidewall of two isosceles of the first bulge loop lead mutually, slippage coordinates, and the height of the first bulge loop is lower than the degree of depth of the first annular cavity, the first spare region is formed between the diapire of the first bulge loop and the diapire of the first annular cavity,
The composite surface of described electric contacting layer is provided with the lower abaculus of multiple regular hexahedron relative to the first bulge loop lateral lower convexity, the composite surface of described metallic matrix is provided with the inward recess with the clamped complementary fit of lower abaculus.
2. the silver-colored graphite alloy electrical contact of one according to claim 1, it is characterized in that: the composite surface of described electric contacting layer has the second bulge loop with the first bulge loop coaxial inner conductor relative to the arranged outside of the first bulge loop, the composite surface of described metallic matrix is provided with the second annular cavity with the upper and lower inserting of the second bulge loop, the longitudinal section of this second annular cavity is isosceles trapezoid, and the sidewall of two of this second annular cavity isosceles and the sidewall of two isosceles of the second bulge loop lead mutually, slippage coordinates, and the height of the second bulge loop is lower than the degree of depth of the second annular cavity, the second spare region is formed between the diapire of the second bulge loop and the diapire of the second annular cavity, the degree of depth of the second described annular cavity is arranged lower than the degree of depth of the first annular cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786623.1U CN204242823U (en) | 2014-12-12 | 2014-12-12 | Silver graphite alloy electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786623.1U CN204242823U (en) | 2014-12-12 | 2014-12-12 | Silver graphite alloy electrical contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242823U true CN204242823U (en) | 2015-04-01 |
Family
ID=52772285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420786623.1U Expired - Fee Related CN204242823U (en) | 2014-12-12 | 2014-12-12 | Silver graphite alloy electrical contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464473A (en) * | 2022-01-08 | 2022-05-10 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
| RU2815171C1 (en) * | 2023-04-19 | 2024-03-12 | Акционерное Общество "Инновационный Научно-Технический Центр" (Ао "Интц") | Method of making electrical contacts from fine-grained dense graphite impregnated with silver and cadmium, electrical contact, electromagnetic relay |
-
2014
- 2014-12-12 CN CN201420786623.1U patent/CN204242823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114464473A (en) * | 2022-01-08 | 2022-05-10 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
| CN114464473B (en) * | 2022-01-08 | 2023-08-01 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
| RU2815171C1 (en) * | 2023-04-19 | 2024-03-12 | Акционерное Общество "Инновационный Научно-Технический Центр" (Ао "Интц") | Method of making electrical contacts from fine-grained dense graphite impregnated with silver and cadmium, electrical contact, electromagnetic relay |
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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: 20150401 Termination date: 20151212 |
|
| EXPY | Termination of patent right or utility model |