CN102074386A - Electric contact for touch switch - Google Patents
Electric contact for touch switch Download PDFInfo
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- CN102074386A CN102074386A CN2011100406007A CN201110040600A CN102074386A CN 102074386 A CN102074386 A CN 102074386A CN 2011100406007 A CN2011100406007 A CN 2011100406007A CN 201110040600 A CN201110040600 A CN 201110040600A CN 102074386 A CN102074386 A CN 102074386A
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- contact
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- electric contact
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- silver
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Abstract
The invention discloses an electric contact for a touch switch. The electric contact comprises a base material and a contact arranged on the base material. The electric contact is characterized in that: the contact is made of silver-cadmium oxide alloy, wherein the weight of the silver is more than 50 percent, and the weight of the cadmium oxide is less than 50 percent. The electric contact is made of silver-cadmium oxide alloy with high hardness, and meanwhile, keeps the advantages of a common silver alloy contact such as low electric resistance, good electric conductivity and the like. Meanwhile, the contact is riveted or welded on the copper base material, so the process is simple, and the structure is stable. The electric contact has the advantages of high electric bearing capacity, long service life, high hardness, electric impact resistance and the like.
Description
Technical field
The present invention relates to a kind of touch switch, especially the electric contact on the touch switch.
Background technology
Touch switch is a kind of common use switch controlling device very widely.Wherein modal is the mechanical type touch switch, and the two-stage that is about to switch is separately positioned on the two ends of certain mechanical structure, under the effect of external force it is in contact with one another or separately, thus conducting or disconnection.Modal button is exactly the example of this touch switch.The two-stage that touch switch is in contact with one another is the contact, thereby realizes conducting by the contact of two contacts, so the conductivity of contact and the stable quality that is directly connected to whole switch.General contact is made of copper, but in some occasions that the switch job stability is had relatively high expectations, and as the contact of the touch switch of float switch, is normally made by silver alloy, comprises silver-nickel, fine silver etc.Silver-nickel, fine silver contact all are soft alloy contacts.This contact is under the situation of equal surface area and volume, be difficult to realize high capacity (ability that especially refers to load current), long-life (ability and the number of times that especially refer to the impact of repetition electric current, voltage), when operating with full load, can occur phenomenons such as alloy surface ablation, attenuate very soon, influence the result of use of switch.
Summary of the invention
The invention provides a kind of solution of the above problems, provide a kind of high electric loading ability, high life, high rigidity, the electric contact of anti-surge.
Technical scheme of the present invention provides a kind of electric contact that is used for touch switch, comprises base material
Contact with being arranged on the described base material is characterized in that: described contact is made by the Agcdo alloy, and wherein Yin weight ratio is more than 50%, and the weight ratio of cadmium oxide is below 50%.
Preferably, the weight ratio of silver is 86.5% in the described contact, and the cadmium oxide weight ratio is 13.5%.
Preferably, described base material is made of copper.
Preferably, described contact is riveted or is welded on the described base material.
Preferably, described thickness of contact H is 0.010 ~ 0.250 inch, and diameter D is 0.050 ~ 1.00 inch.
Preferably, described thickness of contact H is 0.025 inch, and diameter D is 0.245 inch.
Preferably, described contact is applicable to the touch switch of float switch.
Electric contact of the present invention is made by the higher Agcdo alloy of hardness, has kept also simultaneously that common silver alloy contact resistance is little, advantage such as conduct electricity very well.The contact is riveted joint or is welded on the copper base material simultaneously, and technology is simple, Stability Analysis of Structures.Has high electric loading ability, high life, high rigidity, advantages such as anti-surge.
Description of drawings
Fig. 1 is the structural representation of the preferred embodiment of electric contact of the present invention;
Fig. 2 is the end view of the preferred embodiment of electric contact of the present invention.
Embodiment
Below the specific embodiment of the present invention is described in further detail.
As depicted in figs. 1 and 2, the electric contact that is used for touch switch of the present invention, it comprises copper base material 10, riveted joint has contact 12 on the described base material 10.Contact 12 is made by Agcdo alloy (AgCdO), and wherein Yin weight ratio is more than 50%, and the weight ratio of cadmium oxide is below 50%, and the weight ratio of preferred silver is 86.5%, and the cadmium oxide weight ratio is 13.5%.Base material 10 is made by brass.
Agcdo alloy contact of the present invention (chemical molecular formula AgCdO) is a kind of carbide alloy contact, and the proportion of silver can effectively ensure the conductivity of contact more greatly.The silver alloy contact (such as silver-nickel (chemical formula is AgNi) substantially all is soft metal, alloy contact) of relative fine silver contact and other type, its hardness is far above the slider material of these types, so its mechanical impact resistance also is higher than them far away.Contact of the present invention is compared with other contact, under the condition with homalographic and volume, can bear the load of bigger electric current and power; And the ability that anti-electric current, proof voltage impact is far above other contact.Under the prerequisite with even load, with equal area and volume, the phenomenon that electricity is ablated can weaken greatly, thereby can prolong the life-span (the life-span number of times of load life and tolerance surge) of contact greatly.
The contact of most preferred embodiment of the present invention is to be applied on the touch switch of float switch, described thickness of contact H is 0.010 ~ 0.250 inch, diameter D is 0.050 ~ 1.00 inch, preferred thickness H is 0.025 inch, diameter D is 0.245 inch, and its rated current can be carried and be reached 20 amperes, and the moment impact electric current reaches 100 amperes, the surge life-span can reach 1,000,000 times at full capacity, and non-full load can be born surge millions of times.And 13 amperes of rated current can only be born in general fine silver contact or general silver alloy contact, 80 amperes in moment impact electric current, full load surge life-span about 30 times.
Temperature rise when selecting for use the high conductivity copper matrix to reduce resistivity and running greatly.
Use alloy contact directly to rivet or be welded on the copper matrix, simple and reliable process, it is seamless to realize both, low resistance, high solid and reliable connection.It is simple, with low cost that the present invention has manufacturing, the high outstanding advantage of efficient.
Above embodiment only is the present invention's a kind of execution mode wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (7)
1. an electric contact that is used for touch switch comprises base material and the contact that is arranged on the described base material, and it is characterized in that: described contact is made by the Agcdo alloy, and wherein Yin weight ratio is more than 50%, and the weight ratio of cadmium oxide is below 50%.
2. electric contact according to claim 1 is characterized in that: the weight ratio of silver is 86.5% in the described contact, and the cadmium oxide weight ratio is 13.5%.
3. electric contact according to claim 1 is characterized in that: described base material is made of copper.
4. electric contact according to claim 1 is characterized in that: described contact is riveted or is welded on the described base material.
5. according to each the described electric contact in the claim 1 to 4, it is characterized in that: described thickness of contact H is 0.010 ~ 0.250 inch, and diameter D is 0.050 ~ 1.00 inch.
6. electric contact according to claim 5 is characterized in that: described thickness of contact H is 0.025 inch, and diameter D is 0.245 inch.
7. according to each the described electric contact in the claim 1 to 4, it is characterized in that: described contact is applicable to the touch switch of float switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100406007A CN102074386A (en) | 2011-02-18 | 2011-02-18 | Electric contact for touch switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100406007A CN102074386A (en) | 2011-02-18 | 2011-02-18 | Electric contact for touch switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102074386A true CN102074386A (en) | 2011-05-25 |
Family
ID=44032891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100406007A Pending CN102074386A (en) | 2011-02-18 | 2011-02-18 | Electric contact for touch switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102074386A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463230A (en) * | 1987-09-03 | 1989-03-09 | Fuji Electric Co Ltd | Electric contact device |
| CN2108879U (en) * | 1991-08-24 | 1992-07-01 | 西安钟厂 | Defrosting time controller |
| CN1128400A (en) * | 1995-06-10 | 1996-08-07 | 江阴市宏发合金材料厂 | Silver-cadmium oxide based electric contact material and its production process |
| US20090315666A1 (en) * | 2006-08-10 | 2009-12-24 | Ubukataindustries Co., Ltd. | Thermally responsive switch |
| CN101651051A (en) * | 2009-07-20 | 2010-02-17 | 温州宏丰电工合金有限公司 | Cadmium-oxygen-silver multicomponent electrical contact material and preparation method thereof |
-
2011
- 2011-02-18 CN CN2011100406007A patent/CN102074386A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6463230A (en) * | 1987-09-03 | 1989-03-09 | Fuji Electric Co Ltd | Electric contact device |
| CN2108879U (en) * | 1991-08-24 | 1992-07-01 | 西安钟厂 | Defrosting time controller |
| CN1128400A (en) * | 1995-06-10 | 1996-08-07 | 江阴市宏发合金材料厂 | Silver-cadmium oxide based electric contact material and its production process |
| US20090315666A1 (en) * | 2006-08-10 | 2009-12-24 | Ubukataindustries Co., Ltd. | Thermally responsive switch |
| CN101651051A (en) * | 2009-07-20 | 2010-02-17 | 温州宏丰电工合金有限公司 | Cadmium-oxygen-silver multicomponent electrical contact material and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110525 |