Inclined Thermal Interface Assembly for Slide-In Electronics Cooling

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Solution Overview

Problem

The thermal paste applied on electronic units is easily scraped off or damaged during insertion into the casing, leading to inadequate heat transfer between the electronic unit and the heat dissipation unit.

Innovation Solution

Incorporating inclined surfaces on both the heat dissipation unit and the electronic unit, with thermal interface material applied on the inclined surface of the electronic unit, allowing the material to be moved by the inclined surface of the heat dissipation unit during insertion, forming a continuous thermal interface layer for efficient thermal coupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thermal paste is applied on the electronic unit before insertion, then heat transfer coupling is achieved, but the thermal paste is easily scraped off or damaged during insertion

Engineering Contradiction:

Improveheat transfer effectivenessVSAvoidintegrity of thermal paste

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The thermal interface material is applied in advance on the inclined surface of the electronic unit before insertion. The inclined surface design ensures that during the insertion process, the thermal interface material is gradually pushed forward rather than being scraped off, maintaining its integrity while achieving thermal coupling with the heat dissipation unit

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses inclined surfaces (curved/angled geometry) on both the electronic unit and heat dissipation unit. This curved/angled design allows the thermal interface material to be smoothly guided and pushed during insertion, preventing it from being scraped off while ensuring proper thermal contact between components

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Reliability

If thermal paste is applied on the electronic unit, then thermal coupling is achieved, but the paste is damaged by the heat dissipation unit during insertion

Engineering Contradiction:

Improvethermal couplingVSAvoiddamage to thermal interface material

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The thermal interface material is pre-applied on the inclined surface of the electronic unit before the insertion process begins. This preliminary application, combined with the inclined surface geometry, ensures that the material is protected from damage during insertion while maintaining its thermal coupling function

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The insertion process, which previously caused damage to the thermal paste, is transformed into a beneficial process. The inclined surface design converts the sliding motion during insertion into a mechanism that pushes the thermal interface material forward into proper contact with the heat dissipation unit, turning the harmful sliding action into a useful spreading mechanism

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

Ensures effective heat transfer by maintaining the integrity of the thermal interface material, enhancing heat transfer efficiency while preserving the aesthetic appearance of the electronic apparatus.

Implementation Method 1

the thermal interface material is in contact with the first inclined surface of the heat dissipation unit so as to thermally couple the electronic assembly with the heat dissipation unit

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12575048B2Electronic assembly, casing assembly and electronic apparatus

Publication Date: 2026.03.10 WISTRON CORP

AI summary

An electronic apparatus includes a casing assembly and an electronic assembly. The casing assembly includes a casing and a heat dissipation unit. The heat dissipation unit is disposed in the casing and includes a heat dissipation main body. The heat dissipation main body is provided with a first inclined surface. The electronic assembly is slidably mounted in the casing and includes an electronic unit and a thermal interface material. The electronic unit includes an electronic main body, the electronic main body is provided with a second inclined surface. The thermal interface material is disposed on the second inclined surface of the electronic unit, and the thermal interface material is in contact with the first inclined surface of the heat dissipation unit so as to thermally couple the electronic assembly with the heat dissipation unit.