CN105453206B - Electric contact and contact - Google Patents
Electric contact and contact Download PDFInfo
- Publication number
- CN105453206B CN105453206B CN201380078806.6A CN201380078806A CN105453206B CN 105453206 B CN105453206 B CN 105453206B CN 201380078806 A CN201380078806 A CN 201380078806A CN 105453206 B CN105453206 B CN 105453206B
- Authority
- CN
- China
- Prior art keywords
- contact
- base material
- electric contact
- electric
- consumption
- Prior art date
- 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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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
Abstract
In the prior art, stripping consumption in order to prevent, known following method, i.e., by using arc horn when sensing the electric arc generated when contact is opened and closed, prevent contact or base material consumption or, the convex portion of base material by the contact end in the direction that electric arc drives is set, electric contact is made to be not easy to melt.But these methods be the method that could be realized only in the case where can be sufficiently ensured the space of explosion chamber or in the case of can be sufficiently ensured the size of base material in the case of device miniaturization, these methods may not can be used.The present invention provides a kind of electric contact and contact, it is characterised in that：Fitting electric conductivity, heat conductivity, the copper of mechanical strength or copper alloy are as functional layer in the fine silver level at the contact back side for being easy to carry out stripping consumption, thus, the basad material of heat generated when functional layer being made to have the function of electric contact being opened and closed transmits, shortens the function of trembling duration and prevents the function of stripping consumption etc. by maintaining the bond strength with base material, thus, the consumption of electric contact can be mitigated, improve resistance to consumption performance.
Description
Technical field
The present invention relates to the electric contacts and contact that can be used in the contactor controls equipment such as breaker or electromagnetic switch.
Background technology
For the opening and closing devices such as electromagnetic switch, in order to realize the long lifetime of equipment, make electric contact material in itself
Resistance to consumption performance improves, and it is most shortcut to be allowed to long lifetime, thus is carried out with improving the resistance to consumption of electric contact material in itself
Performance-relevant various research and development.
It is known that particularly as electromagnetic switch and relay when being opened and closed frequency height and because its use condition it is strong
In the case of strong demand long lifetime, the joint method of the base material of electric contact material and contact and its engagement state it is good
It is no to make a big impact to the service life of electric contact material in itself.
But in recent years, in the opening and closing devices such as electromagnetic switch and relay, with the development of the miniaturization of equipment, it is
The noble metal amount that uses is reduced to reduce cost, is designed while there is the shape itself for reducing electric contact, and it is opposite
Ground, present situation are that the behaviour in service of electric contact material is harsh, the lost of life of electric contact.
Because of this situation, to electric contact material requirement than the previous longer service life, expect to improve resistance to consumption performance, but realize
These are highly difficult.
In addition, when the electric contact that will be switched off state is to connecting, machine imperceptibly occurs very fast between electric contact sometimes
Tool vibrates, and generates the flutter phenomenon of electric arc with being happened at minim gap intermittent.
When generating the flutter phenomenon, the electric arc between electric contact generates number increase, and accordingly, there exist the consumption of electric contact material
The problem of amount increases.In addition, in the case of the duration length of trembling, electric contact material is easy to welding, therefore, it is desirable to the greatest extent may be used
The duration of the trembling can be shortened.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2008-152971 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2012-221759 bulletins
Invention content
The technical problems to be solved by the invention
Here, pair of the invention is used as to explain by the explanation of the structure about electric contact and contact and its consumption ways
As the technical issues of and its solution.
As the general structure of electric contact used in the opening and closing devices such as electromagnetic switch and relay, have in Ag-SnO2-
In2O3Wait the one side fitting fine silver of silver oxides systems electric contact material, and using fine silver face the connecing as the base material with contact
The structure (such as patent document 1) that conjunction face uses.
Electric contact material one side fitting fine silver be because, when by silver oxide system electric contact material directly with contact
Base material engage when, be difficult to welding since silver oxide system electric contact material itself is made into, thus with base material
Joint interface on cannot get mechanical strength.
However, even if in fitting fine silver layer, and used the face of fine silver layer as the composition surface of the base material with contact
And in the case of being engaged with the base material of contact, when the opening and closing number in electrical endurance test gradually adds up, the fine silver layer meeting
As the starting point of stripping consumption, the increase that contact as a result can be caused to consume.
This stripping consumption in order to prevent, following method known in the state of the art, that is, by using arc horn
(arc horn) prevents the base material of electric contact material or contact from disappearing when sensing the electric arc generated when contact is opened and closed
Consumption alternatively, setting the convex portion of the base material of contact by the contact end in the direction that electric arc drives, is difficult to electric contact
It melts (such as patent document 2).
But these methods are only in the case where can be sufficiently ensured the space of explosion chamber or can be sufficiently ensured the base of contact
The method that could be realized in the case of the size of bottom material, therefore, present situation are these methods in the case where making device miniaturization
It may not can be used.
Solve the technical solution of technical problem
Therefore, the present invention concentrates particularly on the base material of electric contact material and contact in the consumption ways of electric contact
Joint portion near stripping consumption, a kind of electric contact and contact are provided, in the electric contact material one for being easy to carry out stripping consumption
The work(that fitting is made of electric conductivity, heat conductivity, the copper excellent with the bond strength of silver or copper alloy on the face of the fine silver layer in face
Ergosphere makes the functional layer have the work(for the base material that the heat generated when carrying out to electric contact material and establish by cable and close is transferred to contact
Can and the function of stripping consumption etc. be prevented by maintaining the bond strength of the base material of electric contact material and contact, by
This, can mitigate the consumption of electric contact material, improve resistance to consumption performance.
Copper alloy used in the base material of the contact with mechanical strength is needed due to opening and closing frequency is high, in electric contact
When the silver-colored face of material is engaged with the base material of contact, with contact base material be copper when compared with bond strength it is low.
Therefore, an example as the present invention, by regarding the copper of the base material homology of the contact with copper system as functional layer
It uses, while the bond strength for maintaining the base material with electric contact and contact, can also maintain the base material of contact
Mechanical strength.
The present invention also provides a kind of electric contact and contact, with correspondingly thickening functional layer than electric contact material was thinned in the past,
And the copper softer than the base material of electric contact and contact or copper alloy are used as functional layer and form electric contact, thereby, it is possible to make
Functional layer absorbs impact during trembling, shortens the trembling duration, and mitigate the consumption of electric contact.
Therefore, an example as the present invention, by functional layer being configured softer copper, and to being required that mechanical strength is touched
Harder copper is configured in the base material of head, can also shorten the trembling duration.
Invention effect
Electric contact and contact according to the present invention, in the face of the fine silver layer of the one side for the electric contact for being easy to carry out stripping consumption
The functional layer that fitting is made of electric conductivity, heat conductivity, the copper excellent with the bond strength of silver or copper alloy closes the copper or copper
The layer of gold has the function of the heat generated when carrying out to electric contact and establish by cable and close being transferred to base material, shortens the trembling duration
Function and prevent the function of stripping consumption etc. by maintaining the bond strength with the base material of contact, thereby, it is possible to
Mitigate the consumption of electric contact.
The electric contact and contact obtained in this way is when implementing electrical endurance test, compared with existing electric contact, can make resistance to
It consumes performance maximum and improves about 20%.
In addition, in the prior art, reduce thickness of electric contact material etc. every time in order to reduce the noble metal amount used
Shape when being designed change, the space change between contact, therefore, it is necessary to change the weight of the base material of contact and ruler
Very little etc., accordingly, there exist the problem of the design alteration for also needing to opening and closing device itself.
But by using the electric contact with functional layer of the present invention, the thickness of electric contact is not changed, it is possible to reduce
The thickness of electric contact material, therefore, the gap between contact will not change, and not need to design alteration opening and closing device itself.As a result, can
The cost of various specifications change is enough reduced, cheap opening and closing device is provided.
In addition, the electric contact of the functional layer with the present invention can be suitable for arbitrary shape and the contact of arbitrary copper system material
Base material.
Description of the drawings
Fig. 1 is the stereogram for the contact for representing embodiment 1.
Fig. 2 is the definition graph in the section for the electric contact for representing embodiment 2.
Fig. 3 is the definition graph in the section of the electric contact and contact that represent embodiment 2.
Reference sign
1 electric contact material
2 fine silver layers
3 functional layers
4 electric contacts
The base material of 5 contacts
The base material of 6 rivet shapes
Specific embodiment
Table 1 shows the embodiment of the present invention and conventional example, illustrates the manufacturing procedure of these electric contact materials 1.In addition, implement
Example and comparative example are distinguished by electric contact type No., recorded in table 1 ratio (%) shared by the fine silver layer of each electric contact and
After the AC3 grades experiment (being based on JIS C 8201-3 and JIS C 8201-4-1) of ratio (%), each electric contact shared by functional layer
Consumption (%).
Embodiment 1
The silver alloy that composition is calculated as with quality % 91Ag-5.8Sn-3In-0.2Ni is made by dissolution method, repeat into
Row rolling, annealing, obtain desired plate.In addition, in the present invention, as long as the Ag-Ni systems alloy used as electric contact material,
The silver alloy such as Ag-W systems alloy implement internal oxidation treatment in rear process and form silver oxide system electric contact material
Material can then use arbitrary silver alloy.
Form a kind of composite material, the composite material be the plate the compound thickness as fine silver layer 2 of one side for electricity touch
It puts 3~30% fine silver plate of total thickness and is formed.In addition, in the present invention, when fine silver layer 2 is less than the 3% of electric contact thickness,
It is undesirable with the bond strength of functional layer, when more than electric contact thickness 30% when, compared with fine silver layer is thickened, bond strength is not sent out
Now significant effect, the increase of noble metal usage amount can cause material price to increase, therefore not preferably.
Using the composite material, processed by punching of pressurizeing (press punching), obtain the quadrangle of 10mm square
The composite material of shape.Tumbling, internal oxidation treatment are implemented to the composite material of 10mm square obtained in this way, and as work(
The 10mm square and thickness of ergosphere 3 are engaged for 1~50% anaerobic Cu (Vickers hardness 74) of electric contact total thickness, and are formed electricity and touched
Point 4.In addition, in the present invention, when functional layer 3 is less than the 1% of electric contact thickness, it is impossible to significantly see the substrate material with contact
The bond strength of material improves and the effect of trembling decreased duration, when more than electric contact thickness 50% when, with thickening function
Correspondingly, electric contact material is thinning, and therefore, the service life of electric contact material itself shortens, not preferably for layer.In addition, make in functional layer 3
As long as copper or copper alloy are softer than the electric contact material 1 of silver oxide system and the base material 5 of contact, it is possible to be arbitrary copper
Or copper alloy.
The electric contact 4 obtained in this way is connect with the base material 5 of the contact soldering being made of anaerobic Cu (Vickers hardness 110)
It closes, forms contact (Fig. 1) (electric contact type No.1~5).
Embodiment 2
In addition to the base material 5 of functional layer 3 and contact is replaced as the Cu being made of 97Cu-2.6Fe-0.15P-0.25Zn
Other than alloy, in the same manner as in Example 1, contact (Fig. 1) (electric contact type No.6~10) is formed.In addition, the Vickers of functional layer is hard
It is 94 to spend, and the Vickers hardness of the base material of contact is 140.
Embodiment 3
Using the composite material obtained by method similarly to Example 1, by punching processing of pressurizeing, 10mm φ are obtained
Disk-shaped composite material.
Tumbling, internal oxidation treatment are implemented to the composite material of 10mm φ obtained in this way, it will be as functional layer 3
10mm φ and thickness connect for 1~50% plectane being made of anaerobic Cu (Vickers hardness 74) of electric contact total thickness with composite material
After conjunction, with 6 soldered joint of base material for the rivet shape being made of anaerobic Cu (Vickers hardness 110), electric contact (figure is formed
2)。
Such electric contact 4 is touched by the base material 6 of rivet shape with what is be made of anaerobic Cu (Vickers hardness 110)
The riveting engagement of base material 5 of head, forms contact (Fig. 3) (electric contact type No.11~15).
Embodiment 4
In addition to being replaced as the base material 5 of the base material 6 of functional layer 3, rivet shape and contact by 97Cu-2.6Fe-
Other than the Cu alloys that 0.15P-0.25Zn is formed, in the same manner as in Example 3, formation contact (Fig. 3) (electric contact type No.16~
20).In addition, the Vickers hardness of functional layer is 94, the Vickers hardness of the base material of rivet shape and the base material of contact is
140。
Conventional example 1
Using the composite material obtained by method similarly to Example 1, by punching processing of pressurizeing, obtain 10mm and see
The composite material of the quadrilateral shape of side.Electricity is formed to the composite material implementation tumbling, the internal oxidation treatment that obtain in this way
Behind contact, the base material soldered joint of contact with being made of anaerobic Cu (Vickers hardness 110) makes having in addition to functional layer
Contact (electric contact type No.21~22) without other than similarly to Example 1.
Conventional example 2
Using the composite material obtained by method similarly to Example 1, by punching processing of pressurizeing, obtain 10mm and see
The composite material of the quadrilateral shape of side.Electricity is formed to the composite material implementation tumbling, the internal oxidation treatment that obtain in this way
Behind contact, with the base material pricker of contact being made of the Cu alloys (Vickers hardness 140) of 97Cu-2.6Fe-0.15P-0.25Zn
Welding is closed, and makes the contact (electric contact type No.23~24) other than the presence or absence of functional layer similarly to Example 2.
Conventional example 3
Using the composite material obtained by method similarly to Example 1, by punching processing of pressurizeing, 10mm φ are obtained
Disk-shaped composite material.Electric contact is formed to the composite material implementation tumbling, the internal oxidation treatment that obtain in this way
Afterwards, with base material (Vickers hardness 110) soldered joint of the rivet shape being made of anaerobic Cu, and with being made of anaerobic Cu
Base material (Vickers hardness 110) the riveting engagement of contact makes in addition to the presence or absence of functional layer other than similarly to Example 3 tactile
Head (electric contact type No.25~26).
Conventional example 4
Using the composite material obtained by method similarly to Example 1, by punching processing of pressurizeing, 10mm φ are obtained
Disk-shaped composite material.Electric contact is formed to the composite material implementation tumbling, the internal oxidation treatment that obtain in this way
Afterwards, the base material pricker of rivet shape with being made of the Cu alloys (Vickers hardness 140) of 97Cu-2.6Fe-0.15P-0.25Zn
Welding is closed, and is engaged with the base material (Vickers hardness 140) of the contact of 97Cu-2.6Fe-0.15P-0.25Zn, is made
Contact (electric contact type No.27~28) other than the presence or absence of functional layer similarly to Example 4.
It represents the contact made by the above embodiments 1~4 and conventional example 1~4 being installed on specified 80A's in table 1
Electromagnetic switch and the result that physical device evaluation is carried out to resistance to consumption performance.In addition, for the condition of physical device evaluation, carry out
The AC3 grades experiment (440V, 80A) of 8201 defineds of JIS C, until opening and closing number is implemented into 1,000,000 times.
About consumption, the weight change of the AC3 grades of front and rear contacts of experiment is measured, after precentagewise represents AC3 grades of experiments
Quality from AC3 grades experiment before which kind of degree reduced.
As a result, confirmed in Examples 1 to 4, compared with conventional example 1~4, the consumption of electric contact mitigates about 10~
20%, it was confirmed that the resistance to consumption performance of electric contact improves.
In addition, the Cu that the base material 5 of the contact of embodiment 1 is only replaced as to 97Cu-2.6Fe-0.15P-0.25Zn is closed
Golden (Vickers hardness 140) has simultaneously carried out same experiment, but consumption is equal with embodiment 1.
In addition, the base material 5 of the base material 6 of the rivet shape of embodiment 3 and contact is replaced as 97Cu-2.6Fe-
The Cu alloys (Vickers hardness 140) of 0.15P-0.25Zn, and same experiment has been carried out, but consumption is equal with embodiment 3.
[table 1]
Claims (7)
1. a kind of electromagnetic switch contact is formed by the way that electric contact is engaged with the base material of contact, it is characterised in that：
Electric contact is bonded by forming the layer of fine silver in the one side for the electric contact material being made of silver alloy in the layer of the fine silver
The functional layer being made of copper or copper alloy is formed as multilayered structure, and the hardness ratio of the functional layer is made of copper or copper alloy
Contact base material hardness it is soft, which engages with the base material of contact.
2. a kind of electromagnetic switch contact is formed by the way that electric contact is engaged with the base material of contact, it is characterised in that：
Electric contact is bonded by forming the layer of fine silver in the one side for the electric contact material being made of silver alloy in the layer of the fine silver
The functional layer being made of copper or copper alloy is formed as multilayered structure, and the hardness ratio of the functional layer is made of copper or copper alloy
Rivet shape base material hardness it is soft, which is connect by the base material of rivet shape and the base material of contact
It closes.
3. electromagnetic switch contact as described in claim 1, it is characterised in that：
The base material of functional layer and contact is the material of different compositions.
4. electromagnetic switch contact as claimed in claim 2, it is characterised in that：
The base material of functional layer and rivet shape is the material of different compositions.
5. electromagnetic switch contact as claimed in claim 1 or 2, it is characterised in that：
By the electric contact material that the electric contact material that silver alloy is formed is silver oxide system.
6. electromagnetic switch contact according to any one of claims 1 to 4, it is characterised in that：
The thickness of the layer of fine silver is the 3~30% of the thickness of electric contact entirety.
7. electromagnetic switch contact according to any one of claims 1 to 4, it is characterised in that：
The thickness of functional layer is the 1~50% of the thickness of electric contact entirety.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/071286 WO2015019424A1 (en) | 2013-08-06 | 2013-08-06 | Electric contact point and contact element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105453206A CN105453206A (en) | 2016-03-30 |
| CN105453206B true CN105453206B (en) | 2018-07-10 |
Family
ID=52460796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380078806.6A Active CN105453206B (en) | 2013-08-06 | 2013-08-06 | Electric contact and contact |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5992625B2 (en) |
| KR (1) | KR20160040585A (en) |
| CN (1) | CN105453206B (en) |
| WO (1) | WO2015019424A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102313183B1 (en) * | 2017-03-08 | 2021-10-14 | 엘에스오토모티브테크놀로지스 주식회사 | Micro-switch for power window switch unit and power window switch unit for vehicle having the same |
| CN113168971B (en) * | 2018-11-30 | 2022-07-22 | 三菱电机株式会社 | Electrical contact and method of making same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777966A (en) * | 2003-04-22 | 2006-05-24 | 路易斯伦勒有限公司 | Contact piece made of tungsten provided with a corrosion-resistant layer made of a base metal |
| CN1898415A (en) * | 2003-10-31 | 2007-01-17 | 古河电气工业株式会社 | Silver-coated stainless strip for movable contact and method for production thereof |
| CN101562081A (en) * | 2008-04-18 | 2009-10-21 | 佛山精密电工合金有限公司 | Silver-saving laminating composite contact terminal piece and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885224A (en) * | 1981-11-16 | 1983-05-21 | 株式会社安川電機 | Lead switch |
| JP2641549B2 (en) * | 1988-12-29 | 1997-08-13 | 株式会社徳力本店 | Ag-oxide composite contact material and method for producing the same |
| JP2884528B2 (en) * | 1989-09-25 | 1999-04-19 | 株式会社徳力本店 | Composite materials for electrical contacts |
-
2013
- 2013-08-06 JP JP2015530589A patent/JP5992625B2/en active Active
- 2013-08-06 CN CN201380078806.6A patent/CN105453206B/en active Active
- 2013-08-06 KR KR1020167003782A patent/KR20160040585A/en not_active Application Discontinuation
- 2013-08-06 WO PCT/JP2013/071286 patent/WO2015019424A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777966A (en) * | 2003-04-22 | 2006-05-24 | 路易斯伦勒有限公司 | Contact piece made of tungsten provided with a corrosion-resistant layer made of a base metal |
| CN1898415A (en) * | 2003-10-31 | 2007-01-17 | 古河电气工业株式会社 | Silver-coated stainless strip for movable contact and method for production thereof |
| CN101562081A (en) * | 2008-04-18 | 2009-10-21 | 佛山精密电工合金有限公司 | Silver-saving laminating composite contact terminal piece and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105453206A (en) | 2016-03-30 |
| JP5992625B2 (en) | 2016-09-14 |
| JPWO2015019424A1 (en) | 2017-03-02 |
| KR20160040585A (en) | 2016-04-14 |
| WO2015019424A1 (en) | 2015-02-12 |
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