Probe Head Composite Coating Reduces Friction Wear
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Solution Overview
Problem
Probe heads for testing electronic devices face issues due to hardness differences between the probe and plate materials, leading to wear and friction, as well as the probe getting stuck in through holes, caused by the high coefficient of friction.
Innovation Solution
A probe head with a composite coating layer comprising a metal layer and lubricating particles, such as PTFE, applied between the plate and probe, which reduces friction and wear by allowing smooth sliding and preventing sticking, while the metal layer's rigidity matches the probe's for reduced damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the probe slides along the through hole for long-term use, then the probe can perform repeated testing operations, but the hardness difference between the probe and plate causes rubbing and wear between the probe and plate
Solution Approach 1:
The patent applies a composite coating layer comprising a metal layer and lubricating particles on the plate surface within the through hole. This composite structure combines the hardness and rigidity of metal with the low-friction properties of lubricating particles, reducing wear between the probe and plate during long-term repeated testing operations.
2Reliability
If the probe is inserted into the through hole, then the probe can be positioned for testing, but the high coefficient of friction of the through hole wall causes the probe to get stuck
Solution Approach 1:
The patent introduces a composite coating layer as an intermediary between the probe and the plate wall. This coating layer, containing lubricating particles, acts as a mediator that reduces the coefficient of friction between the probe and plate, enabling smooth probe insertion and extraction while maintaining reliable probe positioning during testing.
3Ease of operation
If a coating layer is applied to reduce friction, then the probe can slide smoothly, but the coating material must match the probe rigidity to prevent damage
Solution Approach 1:
The patent uses a composite coating layer with a metal layer providing rigidity and structural support, and lubricating particles providing low-friction sliding properties. This composite structure achieves both smooth probe sliding and appropriate rigidity matching to prevent material damage during operation.
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 composite coating layer enhances the sliding performance of the probe, reduces wear, and prevents the probe from getting stuck, thereby extending the lifespan of both the probe and plate, and minimizing damage.
Implementation Method 1
The composite coating layer includes a metal layer and a plurality of lubricating particles. The metal layer is disposed in the through hole of the plate and between the plate and the probe. The lubricating particles are dispersed in the metal layer.
Data Source
AI summary
A probe head includes a plate, a probe, and at least one composite coating layer. The plate has at least one through hole therein. The probe is at least partially disposed in the through hole of the plate. The composite coating layer includes a metal layer and a plurality of lubricating particles. The metal layer is disposed in the through hole of the plate and between the plate and the probe. The lubricating particles are dispersed in the metal layer.