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High-reliability rivet type electrical contact, forming equipment and forming method

A technology for forming equipment and electric contacts, which is applied to circuits, electric switches, contact materials, etc., can solve the problems of reducing the life of electric contacts, high contact surface resistance, and welding stickiness, etc., so as to improve service life and increase Surface area, the effect of improving the bonding force of silver and copper

Active Publication Date: 2022-05-10
ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the conduction and separation of the electrical contact circuit, there will be collisions, high temperatures, and accumulation of foreign objects. Among them, collisions and high temperatures will cause the separation of the silver alloy layer and the copper base layer, and the accumulation of foreign objects will cause localized contact surface of the electrical contacts. If the resistance is too high, the relative silver alloy layer will be welded and stuck, which will affect and reduce the service life of the electrical contacts, cause complaints from the user end, and bring safety hazards
And due to the high temperature during use, the silver alloy layer and the copper base layer are separated, which further reduces the life of the electrical contact

Method used

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  • High-reliability rivet type electrical contact, forming equipment and forming method
  • High-reliability rivet type electrical contact, forming equipment and forming method
  • High-reliability rivet type electrical contact, forming equipment and forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] like figure 1 As shown, a high-reliability rivet-type electrical contact, the rivet-type electrical contact is a composite electrical contact formed by silver alloy layer 1501 and copper base layer 1502; the silver alloy layer 1501 is far away from the copper base layer 1502 Grooves are provided on one side surface.

[0074] Preferably, the groove is in the shape of a "W" pattern.

[0075] like Figure 2-6 As shown, the molding equipment for molding the above-mentioned high-reliability rivet-type electrical contacts is provided, including,

[0076] Formwork 1, said formwork 1 is provided with forming bottom mold 6, forming bottom needle 14 positioned in forming bottom mold 6, silver wire conduit 3 for conveying silver alloy wire 2, copper wire for conveying copper wire 13 wire conduit 12;

[0077] Movable mold frame 8, described movable mold frame 8 is provided with primary forming mold 7 and final forming mold 9, and described primary forming mold 7 is used for pre...

Embodiment 2

[0091] In the rivet-type electrical contact of this embodiment, on the basis of Embodiment 1, the contact surface of the silver alloy layer 1501 and the copper base layer 1502 is concave-convex.

[0092] In this embodiment, the contacting surface of the silver alloy layer 1501 and the copper base layer 1502 is concave-convex with a "W" pattern.

[0093] Compared with the molding equipment of Example 1, the molding equipment used to manufacture the rivet-type electrical contacts of this embodiment, such as Figure 8 As shown, in this embodiment, a second embossment 1001 is provided on the end surface of the copper wire retaining rod 10 above the copper wire conduit 12, and the copper wire cutter 11 cooperates with the second embossing 1001 of the copper wire retaining rod 10 to cut off Copper wire 13 forms a groove on the upper end surface of the copper material segment; as Figure 9 As shown, a third emboss 301 is provided on one end surface of the silver wire conduit 3, and ...

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Abstract

The invention belongs to the technical field of rivet type electrical contact processing and manufacturing, and particularly relates to a high-reliability rivet type electrical contact, forming equipment and a forming method. According to the high-reliability rivet-type electrical contact, the groove is formed in the surface of the silver alloy layer and serves as a foreign matter collecting groove, the surface area of the contact working face is increased, a containing space is provided for high-resistance substances such as foreign matter and alloy generated after contact of part of the electrical contact, and the phenomenon that the substances are subjected to fusion welding and sticking on the combination face is reduced. According to the high-reliability rivet-type electrical contact provided by the invention, the contact surface of the silver alloy layer and the copper-based layer is concave-convex, so that the area of the contact surface of the silver alloy layer and the copper-based layer is increased, the silver-copper binding force can be improved, and the service life of the composite electrical contact is prolonged.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing rivet-type electric contacts, and in particular relates to a high-reliability rivet-type electric contact, forming equipment and a forming method. Background technique [0002] Composite electrical contact product is an electronic component used in switches, relays, contactors and household appliances. It is used as a connecting part for circuit conduction and circuit separation, so it is widely used in daily life. During the conduction and separation of the electrical contact circuit, there will be collisions, high temperatures, and accumulation of foreign objects. Among them, collisions and high temperatures will cause the separation of the silver alloy layer and the copper base layer, and the accumulation of foreign objects will cause localized contact surface of the electrical contacts. If the resistance is too high, the corresponding silver alloy layer will be welded and ...

Claims

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Application Information

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IPC IPC(8): H01H1/06H01H1/04H01H11/04
CPCH01H1/06H01H1/04H01H11/04
Inventor 王培石大松邹吉鸿缪循晓柏小平颜小芳
Owner ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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