Interference-Fit Frame Retaining Thermal Interface Material
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Solution Overview
Problem
Thermal Interface Materials (TIM) tend to shift, move, or migrate off electrical components and heatsinks due to vibrations or movements, impairing thermal coupling and limiting the performance of electrical components.
Innovation Solution
An interference-fit frame with a border that forms an opening around the electrical component and includes a retention dam and protuberance to secure TIM in place, preventing it from shifting or migrating, thereby maintaining strong thermal coupling between the component and heatsink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If TIM is applied between electrical components and heatsinks to enhance thermal coupling, then thermal transfer capability is improved, but TIM may shift or migrate due to vibrations and movements, impairing thermal coupling
Solution Approach 1:
The patent introduces an interference-fit frame as an intermediary structure between the electrical component and heatsink. This frame includes retention features (such as retention walls or protrusions) that physically constrain the TIM, preventing it from migrating while maintaining thermal contact. The frame acts as a mediator that solves the stability problem without compromising thermal transfer.
Solution Approach 2:
The solution segments the assembly into distinct functional components: the electrical component, the TIM, the interference-fit frame, and the heatsink. The frame is specifically designed with segmented retention features (multiple walls or protrusions) that independently constrain the TIM at different locations, preventing migration while allowing thermal conduction.
2Stability of the object's composition
If an interference-fit frame with retention dam is used to prevent TIM migration, then TIM position stability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into the interference-fit frame: it serves as both a mechanical constraint structure (with retention walls to prevent TIM migration) and a thermal conduction path (maintaining contact between component and heatsink). By combining these functions into a single integrated component, the solution reduces overall device complexity compared to using separate retention mechanisms and thermal interfaces.
Solution Approach 2:
The interference-fit frame is designed as a multi-functional component that simultaneously provides mechanical retention (preventing TIM migration), thermal conduction (maintaining heat transfer path), and structural support (aligning component with heatsink). This universal design eliminates the need for additional separate components, thereby reducing device complexity.
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 effectively retains TIM between electrical components and heatsinks, enhancing thermal coupling and heat transfer capabilities, ensuring optimal performance of electrical components by preventing TIM displacement.
Implementation Method 1
an interference-fit frame for retaining TIM between an electrical component and a heatsink... a border that forms an opening and at least one protuberance that extends from the border into the opening
Data Source
AI summary
The disclosed interference-fit frame includes (1) a border dimensioned for installation around an electrical component coupled to a circuit board, wherein (A) the border forms an opening in which the electrical component resides when the border is installed and (B) at least a portion of the border constitutes a retention dam that rises beyond the electrical component when the border is installed, and (2) at least one protuberance that extends from the border into the opening. Various other apparatuses, systems, and methods are also disclosed.