Electro-Conductive Contact Pin Structure for Narrow-Pitch Inspection
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Solution Overview
Problem
Conventional electro-conductive contact pins and inspection devices face challenges in achieving narrow pitch due to interference issues with interference members, leading to damage and reduced durability, and struggle to maintain consistent contact stability and signal integrity.
Innovation Solution
The electro-conductive contact pin is designed with a uniform overall thickness guide housing and a protrusion length that avoids interference, featuring a first connection portion with a flange to prevent deformation and maintain contact stability, and an elastic portion for flexible alignment with terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the guide housing is made with non-uniform thickness to accommodate interference members, then the interference members can be positioned, but the guide housing becomes prone to damage and reduces durability
Solution Approach 1:
The guide housing is designed with non-uniform thickness distribution where the thickness varies in different regions. Specifically, the guide housing has a first thickness in a first region and a second thickness in a second region, allowing the interference member to be positioned in a region with sufficient thickness while maintaining overall structural integrity and durability in other critical areas.
2Ease of manufacture
If the contact pin uses conventional structures (pogo-type or rubber-type), then manufacturing is easier, but contact stability and signal integrity deteriorate at narrow pitches
Solution Approach 1:
The contact pin is divided into distinct functional segments: a first connection portion for electrical connection, a second connection portion for mechanical support, and an elastic portion for flexible alignment. This segmentation allows each part to be optimized for its specific function while maintaining manufacturability through integrated construction methods.
Solution Approach 2:
The contact pin utilizes composite material structures, particularly in the elastic portion that may incorporate rubber or elastomeric materials combined with conductive elements. This composite approach provides both mechanical flexibility for alignment and electrical conductivity for signal transmission, achieving reliable contact stability at narrow pitches while remaining manufacturable.
3Ease of operation
If the contact pin protrusion length is increased to avoid interference, then interference is prevented, but the overall size and complexity of the contact pin increases
Solution Approach 1:
The contact pin incorporates an elastic portion that provides dynamic adjustment capability, allowing the pin to flex and adapt its position to avoid interference with the guide housing while maintaining electrical connection. This dynamic flexibility eliminates the need for excessive protrusion length, as the elastic portion can accommodate misalignments and interference conditions through controlled deformation.
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
Enables precise alignment and stable electrical contact at narrow pitches, preventing guide housing damage and ensuring consistent signal transmission.
Implementation Method 1
an elastic portion configured to be elastically deformable along the length direction
Data Source
AI summary
The present invention provides an electro-conductive contact pin which can implement a narrow-pitch and an inspection device including same. Furthermore, the present invention provides an electro-conductive contact pin which uses a guide housing formed to have consistent thickness overall, including a portion corresponding to a lower part of an interference member and prevents damage due to interference with the interference member, and an inspection device including same.