Composite Material Structure for Electronic Device Casings

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Solution Overview

Problem

Electronic device casings require sufficient structural strength to withstand changing consumer demands, but existing materials often fall short in providing adequate protection.

Innovation Solution

A composite material structure comprising a first fiber layer with long fibers and resin, a second fiber layer with long fibers and resin, and a third fiber layer with short fibers and resin, where the short fiber layer is strategically positioned between the long fiber layers to enhance rigidity, utilizing carbon, glass, or plant fibers and thermoplastic or thermosetting resins, with specific ratios and configurations to optimize structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If existing materials are used for electronic device casings, then manufacturing is simple, but structural strength is insufficient

Engineering Contradiction:

Improvestructural strengthVSAvoidmaterial structure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent applies composite materials by combining three distinct fiber layers (first long fiber layer, second long fiber layer, and third short fiber layer) with different fiber types and resin materials to create a multi-layer composite structure that achieves superior structural strength compared to conventional single-material casings

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent segments the casing material into three separate fiber layers with different characteristics (long fiber layers for strength, short fiber layer for rigidity), allowing each layer to contribute specific mechanical properties to the overall structure

Inventive Principle:

Principle #1Segmentation

2Strength

If long fiber layers are used to improve strength, then structural strength increases, but rigidity decreases

Engineering Contradiction:

Improvestructural strengthVSAvoidrigidity

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent applies local quality by placing the short fiber layer specifically between the two long fiber layers, creating a localized rigid core that prevents deformation while the outer long fiber layers provide overall structural strength and flexibility

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11794447B2Composite material structure

Publication Date: 2023.10.24 COMPAL ELECTRONICS INC

AI summary

A composite material structure includes a first fiber layer, a second fiber layer, and a third fiber layer. The first fiber layer is composed of a first long fiber and a first resin material. The second fiber layer is composed of a second long fiber and a second resin material. The third fiber layer is disposed between the first fiber layer and the second fiber layer. The third fiber layer is composed of a short fiber and a third resin material. A length of the first long fiber and a length of the second long fiber are both greater than a length of the short fiber, and the length of the short fiber is less than or equal to 25 mm.