Metal-Ceramic Composite Component for Electronic Device Strength and Weight

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Solution Overview

Problem

Existing electronic devices face challenges in miniaturization and weight reduction due to physical constraints such as strength and durability requirements, while also needing to meet aesthetic, tactile, and cost considerations, as traditional materials like plastics lack sufficient strength and scratch resistance, and metals incur high costs and weight.

Innovation Solution

The use of a metal-ceramic composite component, made from materials like aluminum, magnesium, and zirconia, which provides greater strength in specific directions, reduces size and weight, and offers scratch resistance with a metal surface that can be anodized for aesthetics, eliminating the need for additional cosmetic or tactile members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of stationary object

If plastic materials are used for structural components, then cost and weight are reduced, but strength and scratch resistance are insufficient

Engineering Contradiction:
ImproveweightVSAvoidstrength
Core Design Contradiction:
Weight of stationary objectVSStrength

Solution Approach 1:

The patent applies composite materials by combining metal and ceramic materials to create a metal-ceramic composite component. This composite structure provides both the light weight advantage of plastics and the high strength characteristics of metals, while the ceramic phase adds scratch resistance. The composite material resolves the contradiction between weight reduction and strength enhancement.

Inventive Principle:
Principle #40Composite materials

2Strength

If metal materials are used for structural components, then strength and scratch resistance are improved, but weight and cost increase

Engineering Contradiction:
ImprovestrengthVSAvoidweight
Core Design Contradiction:
StrengthVSWeight of stationary object

Solution Approach 1:

The metal-ceramic composite uses a metal matrix (such as aluminum or magnesium) as the base material to maintain low weight, while incorporating ceramic particles or fibers to enhance strength and scratch resistance. This composite approach allows achieving high strength without proportionally increasing weight, resolving the contradiction between strength improvement and weight control.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The ceramic phase is distributed locally within the metal matrix to provide targeted reinforcement in specific regions where high strength and scratch resistance are needed, while other regions maintain the lightweight metal characteristics. This local quality enhancement resolves the contradiction by providing strength only where necessary.

Inventive Principle:
Principle #3Local quality

3Weight of stationary object

If plastic components are used, then cost and weight are reduced, but component dimension must be increased to provide sufficient strength

Engineering Contradiction:
ImproveweightVSAvoidcomponent dimension
Core Design Contradiction:
Weight of stationary objectVSLength of moving object

Solution Approach 1:

The metal-ceramic composite material provides high strength-to-weight ratio, allowing the component to be made smaller in dimension while maintaining sufficient strength. The composite structure enables strength enhancement without proportional weight increase, resolving the contradiction between reducing component dimension and maintaining strength.

Inventive Principle:
Principle #40Composite materials

4Weight of stationary object

If light metals are used, then weight is minimized, but dent resistance and strength are insufficient

Engineering Contradiction:
ImproveweightVSAvoiddent resistance
Core Design Contradiction:
Weight of stationary objectVSStrength

Solution Approach 1:

The metal-ceramic composite incorporates hard ceramic particles or fibers within a light metal matrix, providing dent resistance and strength enhancement while maintaining the low weight advantage of light metals. The ceramic reinforcement phase resists deformation and denting, resolving the contradiction between weight minimization and dent resistance.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS7911771B2Electronic device with a metal-ceramic composite component
Publication Date: 2011.03.22 APPLE INC
  • US7911771B2 patent drawing
  • US7911771B2 patent drawing
  • US7911771B2 patent drawing

AI summary

An electronic device is disclosed. The electronic device may include a first component. The electronic device may also include a metal-ceramic composite component coupled to the first component and configured to reinforce at least a portion of the first component in a first direction.