Floating Heat Sink With Integrated Elastic Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heat dissipation solutions, such as fixed and floating heat sinks, face challenges in achieving a balance between size, tolerance capability, and structural complexity, with fixed sinks being limited by high thermal resistance due to thick thermal pads and floating sinks being difficult to implement in narrow spaces due to their complex and large size.
Innovation Solution
A floating heat sink with an integrated elastic support featuring fasteners and elastic arms that provide adaptive pressure and tolerance, allowing for even stress distribution and adjustable distance between the heat dissipating and emitting components, thus enhancing tolerance capability while maintaining a small size and simplified structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed heat sink with a thermal pad is used, then the structure is simple and implementation is easy, but the thickness of the thermal pad is relatively large causing relatively high thermal conduction resistance
Solution Approach 1:
The patent changes the physical state and mechanical properties of the heat conducting medium from a soft, thick pad to a rigid or semi-rigid material with elastic support. This parameter change allows the medium to maintain lower thickness while providing both thermal conduction and tolerance absorption through the elastic arms, resolving the contradiction between ease of manufacture and thermal conduction resistance.
2Reliability
If a floating heat sink with springs and thermally conductive silicon is used, then tolerance capability is strong, but the structure is very complex and size is relatively large making it difficult to apply to narrow space devices
Solution Approach 1:
The patent merges the functions of multiple components (fasteners, elastic arms, and heat conducting medium) into an integrated structure. The elastic arms are directly connected to fasteners and work in conjunction with a simplified heat conducting medium, combining tolerance absorption and thermal conduction functions into a more compact and less complex assembly that maintains strong tolerance capability while reducing structural complexity and size.
3Reliability
If a floating heat sink with springs is used, then tolerance capability is strong, but the size is relatively large and difficult to implement in narrow spaces
Solution Approach 1:
The patent changes the configuration and material properties of the elastic support from traditional springs to rigid or semi-rigid elastic arms with optimized geometry. This parameter change enables the structure to provide sufficient elastic force for tolerance absorption while occupying significantly less space, resolving the contradiction between tolerance capability and size for narrow space applications.
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 enables effective heat dissipation with strong tolerance capability, reduced size, and simplified structure, facilitating implementation in narrow spaces without the need for additional elastic components, thereby improving heat dissipation efficiency and manufacturing ease.
Implementation Method 1
the elastic arm is bent toward the board... the middle part of the elastic arm is configured to be connected to a board in a fastened manner
Implementation Method 2
Heat generated during working of a chip is transferred through the thermal pad to the heat dissipating component, and then the heat is conducted through the heat dissipating component to air for heat dissipation
Data Source
AI summary
A floating heat sink includes an elastic support and a heat dissipating piece. The elastic support is integrally formed and includes at least two fasteners and at least two elastic arms. The fasteners are configured to mount the heat dissipating piece. All the fasteners and all the elastic arms are arranged around the heat dissipating piece. Two ends of the elastic arm are both connected to the fastener, and the two ends of the elastic arm are arranged in a circumferential direction of the heat dissipating piece. A middle part of the elastic arm is configured to be connected to a board in a fastened manner, and the middle part of the elastic arm is bent toward the board.