Ceramic Metal Chassis for Portable Devices
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Solution Overview
Problem
Information handling systems, particularly portable devices, face challenges with lightweight chassis that lack structural strength and rigidity, leading to oscillation and potential breakage, while metal and carbon fiber components can interfere with wireless communications and aesthetics.
Innovation Solution
The use of ceramic materials with varying ductility and hardness, combined with metal elements, to form chassis elements that provide tailored structural and aesthetic characteristics, including a rigid base, ductile bezel, and transparent cover, integrated with coupling devices and coatings for enhanced durability and recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight materials are used to decrease chassis weight, then weight is reduced, but structural strength and rigidity deteriorate
Solution Approach 1:
The patent applies composite materials by combining ceramic materials with metal reinforcements to create a chassis that achieves both lightweight properties and structural strength. The ceramic base material provides light weight while metal reinforcement elements (such as metal plates, foils, or grids) are integrated into the ceramic structure to enhance strength and rigidity, resolving the contradiction between weight reduction and strength maintenance.
2Strength
If rigid materials are used to increase structural strength, then strength is improved, but risk of rupture under excessive deflection increases
Solution Approach 1:
The patent applies local quality by varying the ceramic material properties in different regions of the chassis. The ceramic base material is made with specific ductility characteristics that allow controlled deformation under stress, while metal reinforcement elements are strategically positioned at locations requiring enhanced strength. This localized differentiation enables the chassis to be rigid where needed for strength but flexible where needed to prevent rupture under excessive deflection.
3Strength
If metal components are used to provide structural strength, then strength is improved, but wireless communication interference increases
Solution Approach 1:
The patent applies the extraction principle by removing metal components from the chassis structure and replacing them with ceramic materials that provide equivalent structural strength without the harmful electromagnetic interference. The ceramic chassis elements are designed to maintain structural integrity while being electromagnetically transparent, thereby eliminating wireless communication interference while preserving strength through alternative material selection rather than extraction of problematic metals.
4Weight of moving object
If plastic components are used to achieve light weight, then weight is reduced, but strength to withstand normal use deteriorates
Solution Approach 1:
The patent applies composite materials by combining ceramic base material with metal reinforcement elements to create a chassis that achieves both light weight and sufficient strength. The ceramic provides the lightweight foundation while embedded metal elements (plates, foils, or grids) reinforce critical structural areas, giving the chassis the strength to withstand normal use while maintaining the light weight advantage over traditional metal constructions.
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 ceramic chassis elements offer a strong, durable, and lightweight structure that reduces oscillation and enhances user interaction, while maintaining aesthetics and recyclability, supporting advanced functions in portable information handling systems.
Implementation Method 1
sintering causes densification of the ceramic material and coupling device into an integrated chassis element
Implementation Method 2
metal chassis elements are coated with a ceramic and annealed to diffuse the ceramic material with the underlying metal material
Implementation Method 3
metal chassis elements are coated with a ceramic and annealed to diffuse the ceramic material with the underlying metal material
Data Source
AI summary
An information handling system chassis is built at least in part from ceramic elements. For example, a transparent aluminum oxide ceramic portion covers a touchscreen to provide a rigid outer surface for accepting end user inputs. As another example, a ceramic chassis element has a ceramic material formed around a metal material of similar substance with bonding of the ceramic to the underlying material enhanced with oxidation of the outer surface of the metal material.