An integrated structure of a sealed contactor base and a processing technology thereof

Inactive Publication Date: 2019-01-11
贵州振华群英电器有限公司(国营第八九一厂)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is easy to damage the thread during the product assembly process, and the contacts on the two contact pier parts are required to be parallel after assembly. When connecting with threads, it is easy to cause the height of the two contact piers to be inconsistent under the condition of ensuring that the two contacts are parallel, which seriously affects Assembly consistency of products and contact effectiveness of contacts
[0004] In the reflow soldering process, the contacts and terminals are threaded assembly process. This structure has poor manufacturability, high environmental pollution and difficult assembly. Moreover, due to the large load and high temperature rise of this type of contactor, it is difficult for welding and assembly. The technical requirements are relatively high, so the actual effective current-carrying area of ​​the terminal part of the base often does not reach the theoretical design value due to the influence of the assembly consistency of the structure base. The temperature rise of the product is high, and due to the low temperature resistance level of soldering, in the environment where the ambient temperature is high or the temperature of the product itself is high, the base part may partially melt due to excessive temperature, and the applicable ambient temperature At the same time, in the reflow soldering process, the solder tends to flow to the periphery of the device, and it needs to be polished after soldering, which reduces the production efficiency

Method used

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  • An integrated structure of a sealed contactor base and a processing technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: An integrated structure of a sealed contactor base, as attached figure 1 As shown, a red copper base plate 7 is included, a through hole is provided on the red copper base plate 7, a convex ceramic seat ring 5 is arranged at the through hole, and a first brazing layer 6 is provided between the convex ceramic seat ring 5 and the red copper base plate 7 The lower end of the convex ceramic seat ring 5 is connected with a middle-shaped bolt 10, a second brazing layer 9 is arranged between the middle-shaped bolt 10 and the convex ceramic seat ring 5, and the upper end of the middle-shaped bolt 10 passes through the convex ceramic seat Behind the ring 5, it is connected with the contact pier 1 located at the upper end of the convex ceramic seat ring 5, and a gasket 3 is arranged between the contact pier 1 and the convex ceramic seat ring 5, and the gasket 3 is connected with the contact pier 1 and the convex ceramic seat ring 5 A third brazing layer 2 and a four...

Embodiment 2

[0027] Embodiment 2: The above-mentioned processing technology of the integrated structure of the sealed contactor base, the steps are as follows:

[0028] 1) Install the contact pier 1, washer 3, convex ceramic seat ring 5, copper bottom plate 7 and medium-shaped bolt 10 in place according to the above structure. Smear AgCuNi-28 solder on the convex ceramic seat ring 5 between the convex ceramic seat ring 5, between the convex ceramic seat ring 5 and the copper base plate 7, between the convex ceramic seat ring 5 and the medium-shaped bolt 10, and on the convex ceramic seat ring 5 below the copper base plate 7 , and then clamped with a jig to get a semi-finished product, the jig can use any tool that can clamp the contactor, the purpose is to avoid component displacement during the brazing process;

[0029] 2) Put the semi-finished product into a brazing furnace with a vacuum environment or a reducing atmosphere, and treat it at 800 ° C for 1 hour, and then place between the ...

Embodiment 3

[0030] Embodiment 3: The above-mentioned processing technology of the integrated structure of the sealed contactor base, the steps are as follows:

[0031] 1) Install the contact pier 1, washer 3, convex ceramic seat ring 5, copper bottom plate 7 and medium-shaped bolt 10 in place according to the above structure. Smear AgCuNi-28 solder on the convex ceramic seat ring 5 between the convex ceramic seat ring 5, between the convex ceramic seat ring 5 and the copper base plate 7, between the convex ceramic seat ring 5 and the medium-shaped bolt 10, and on the convex ceramic seat ring 5 below the copper base plate 7 , and then clamped with a jig to get a semi-finished product, the jig can use any tool that can clamp the contactor, the purpose is to avoid component displacement during the brazing process;

[0032] 2) Put the semi-finished product into a brazing furnace in a vacuum environment or a reducing atmosphere, and treat it at 900°C for 0.5h, between the contact pier 1 and th...

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Abstract

The invention discloses an integrated structure of a sealed contactor base and a processing technology thereof, comprising a red copper base plate, a through hole is arranged on the red copper base plate, a convex ceramic seat ring is arranged at the through hole, and a first brazing layer is arranged between the convex ceramic seat ring and the red copper base plate; a low end of that convex ceramic seat ring is connected with a middle-shaped bolt, a second brazing layer is arranged between the middle bolt and the convex ceramic seat ring, the upper end of the middle-shaped bolt passes through the convex ceramic seat ring and is connected with a contact pier arranged at the upper end of the convex ceramic seat ring, a gasket is arranged between the contact pier and the convex ceramic seatring, and a third brazing layer and a fourth brazing layer are respectively arranged between the gasket and the contact pier and the convex ceramic seat ring. The convex ceramic seat ring under the red copper base plate is provided with a spring brazing layer. The invention has the characteristics of good assembly consistency and contact effectiveness, low temperature rise in use process, high temperature suitable for working environment and high production efficiency. In addition, it also has the characteristics of no cracking of ceramics and good quality of products.

Description

technical field [0001] The invention relates to a contactor base structure and processing technology, in particular to an integrated structure and processing technology of a sealed contactor base. Background technique [0002] In the original sealed contactor base structure, the contact pier and the bolt are connected by threads or reflow soldering. [0003] However, it is easy to damage the thread during the product assembly process, and the contacts on the two contact pier parts are required to be parallel after assembly. When connecting with threads, it is easy to cause the height of the two contact piers to be inconsistent under the condition of ensuring that the two contacts are parallel, which seriously affects The assembly consistency of the product and the contact effectiveness of the contacts. [0004] In the reflow soldering process, the contacts and terminals are threaded assembly process. This structure has poor manufacturability, high environmental pollution an...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01H50/02H01H49/00
CPCH01H50/023H01H49/00
Inventor周敬张瑜郑绍信何云山杨琼李娇
Owner贵州振华群英电器有限公司(国营第八九一厂)