Cylindrical Electrical Contact with Blocking Piece for IC Packages
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Solution Overview
Problem
Existing electrical contacts for IC packages are heavy, costly, and time-consuming to produce due to cutting work, and are prone to poor electrical connections from foreign material intrusion.
Innovation Solution
The electrical contact is formed into a cylindrical shape by curling an electroconductive plate with a blocking piece at the middle portion, bent inward to prevent foreign material intrusion, and features a crown-like contact portion for easy production and improved design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting work is used to form the plunger shape, then the contact portion can be formed, but the production time increases and cost increases
Solution Approach 1:
The invention changes the manufacturing method from cutting (subtractive) to curling and bending (formative), transforming the plunger from a rod-like shape to a cylindrical shape by curling an electroconductive plate. This parameter change in the forming process eliminates time-consuming cutting operations while maintaining the necessary contact portion geometry.
Solution Approach 2:
The invention adopts a cylindrical shape for the contact member by curling an electroconductive plate, replacing the traditional rod-like shape. This curved, cylindrical form eliminates the need for cutting operations to create the contact portion, as the crown-like shape can be formed through bending and curling processes, significantly reducing production time.
2Manufacturing precision
If cutting work is used to form the plunger shape, then the contact portion can be formed, but the production cost increases
Solution Approach 1:
The invention changes the manufacturing method from cutting (subtractive) to curling and bending (formative), transforming the plunger from a rod-like shape to a cylindrical shape by curling an electroconductive plate. This parameter change in the forming process eliminates time-consuming cutting operations while maintaining the necessary contact portion geometry.
Solution Approach 2:
The invention adopts a cylindrical shape for the contact member by curling an electroconductive plate, replacing the traditional rod-like shape. This curved, cylindrical form eliminates the need for cutting operations to create the contact portion, as the crown-like shape can be formed through bending and curling processes, significantly reducing production time.
3Device complexity
If the plunger is made from a rod-like pin, then the structure is simple, but the weight increases
Solution Approach 1:
The invention transforms the plunger from a solid rod-like pin to a cylindrical shape formed by curling an electroconductive plate. This cylindrical configuration, particularly when implemented as a tube or hollow structure, significantly reduces the weight of the moving contact portion while maintaining its structural integrity and electrical conductivity.
Solution Approach 2:
The invention uses a curled electroconductive plate forming a cylindrical shell structure for the contact member, replacing the solid rod-like pin. This thin-walled cylindrical construction reduces the mass of the moving component while maintaining sufficient mechanical strength and electrical conductivity for the application.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in a lightweight, cost-effective electrical contact that prevents foreign material intrusion, ensuring reliable electrical connections and improved manufacturing efficiency.
Implementation Method 1
the blocking piece is bent toward an inside of the cylindrical shape in such a manner that the blocking piece, in a plan view, blocks a through hole that runs vertically through the inside of the cylindrical shape
Implementation Method 2
an electroconductive plate
Implementation Method 3
the spring member comprises a normally-wound portion 3a in which a wire member is retractably wound
Implementation Method 4
the normally-wound portion 3a of the spring member 3 is compressed and thus the plunger 2 is moved downward
Data Source
AI summary
The present invention is to provide an electrical contact and a socket for electrical parts which can be produced easily, at low cost and is light in weight. The contact pin 15 comprises a first contact member 26 having a first contact portion 26d to be contacted with an IC package 12, wherein the first contact member 26 is formed into a cylindrical shape by curling an electroconductive plate, a blocking piece 26e is formed at a middle portion of the cylindrical shape by making a cut in the middle portion, and the blocking piece 26e is bent toward an inside of the cylindrical shape in such a manner that the blocking piece, in a plan view, blocks a through hole that runs vertically through the inside of the cylindrical shape.