Bent Elastic Contact Probe for Stable Test Resistance
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Solution Overview
Problem
The resistance value of contact probes with relatively small loads increases with the number of electrical tests, leading to inaccurate electrical test results and reduced reliability.
Innovation Solution
A contact probe design featuring a tubular structure with an engagement part and a pushing part that maintains the elastic member in a bent state, ensuring consistent contact with the inner wall, utilizing tight and loose coil parts for stability and incorporating a blocking part for additional support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the contact probe is used for repeated electrical tests, then the number of tests increases, but the resistance value increases and exceeds the allowable resistance value
Solution Approach 1:
The elastic member is pre-bent into a bent state before use by the engagement part and pushing part. This preliminary action ensures that the elastic member maintains a consistent bent configuration during repeated electrical tests, preventing resistance value increases and ensuring reliable contact with the inner wall of the tubular structure throughout the testing process
Solution Approach 2:
The patent changes the physical state of the elastic member from a straight or loose configuration to a pre-bent configuration. By altering the shape parameter of the elastic member through the joint action of the engagement part and pushing part, the contact probe achieves stable electrical contact and maintains consistent resistance values across multiple tests
2Device complexity
If the elastic member is not pre-bent, then the structure is simpler, but the contact stability with the inner wall decreases
Solution Approach 1:
The elastic member is pre-bent into a bent state before use by the engagement part and pushing part. This preliminary action ensures that the elastic member maintains a consistent bent configuration during repeated electrical tests, preventing resistance value increases and ensuring reliable contact with the inner wall of the tubular structure throughout the testing process
Solution Approach 2:
The patent changes the physical state of the elastic member from a straight or loose configuration to a pre-bent configuration. By altering the shape parameter of the elastic member through the joint action of the engagement part and pushing part, the contact probe achieves stable electrical contact and maintains consistent resistance values across multiple tests
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 design enhances the stability and reliability of electrical testing by maintaining consistent contact and reducing detection errors, thereby improving the accuracy of electrical test results.
Implementation Method 1
an elastic member 200, wherein a part of the elastic member 200 is arranged in the tubular structure 100, a side surface at a first end of the elastic member 200 is engaged with the engagement part 110, and the pushing part 120 presses a side surface of the elastic member 200 facing the pushing part
Data Source
AI summary
An embodiment of the present application provides a contact probe, which comprises a tubular structure, an engagement part, a pushing part and an elastic member. The elastic member is received within the tubular structure; the engagement part is arranged within the tubular structure; the pushing part is arranged within the tubular structure and is arranged at the inner wall of the tubular structure opposite to the engagement part; a part of the elastic member is arranged in the tubular structure, and a side surface at a first end of the elastic member is engaged with the engagement part, and the pushing part presses a side surface of the elastic member facing the pushing part, and both the engagement part and the pushing part press the elastic member to make the elastic member in a bent state, and make a part of the elastic member in the tubular structure to abut closely against the inner wall of the tubular structure. In the present embodiment, when using the contact probe, the elastic member can always bend in one direction and contact with a same part of the inner wall of the tubular structure, which can improve the stability of the structures within the contact probe, so as to improve the stability of electrical testing.