Electronic Device Metal Housing Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with metal housings made of high-specific-gravity materials like titanium or stainless steel face increased raw material usage, manufacturing costs, and weight, and heterojunctions between metals with different melting points and thermal expansion coefficients complicate fabrication.
Innovation Solution
A housing design comprising an outer portion of titanium, an inner portion of magnesium or aluminum, and a middle portion with an injection molded insulator, where the middle portion is coupled to the outer portion in a concave-convex structure, and the inner and middle portions are connected with controlled melting point differences, allowing for diecasting and reduced manufacturing time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high-specific-gravity metal materials (titanium or stainless steel) are used for the housing, then the exterior protection and aesthetic appearance are improved, but the weight and manufacturing cost increase
Solution Approach 1:
The housing is divided into multiple portions with different materials: the outer portion uses high-specific-gravity metal (titanium or stainless steel) for exterior protection and aesthetics, while the inner portion uses low-specific-gravity metal (magnesium or aluminum) for structural support and weight reduction. This segmentation allows each portion to contribute its optimal properties to the overall device.
Solution Approach 2:
Different portions of the housing have different material properties tailored to their specific functions. The outer portion has high strength and aesthetic quality, while the inner portion has low density and good structural properties. This local differentiation of material quality optimizes both protection and weight characteristics.
2Strength
If high-specific-gravity metal materials (titanium or stainless steel) are used for the housing, then the exterior protection and aesthetic appearance are improved, but the manufacturing cost increases
Solution Approach 1:
The housing is divided into multiple portions with different materials: the outer portion uses high-specific-gravity metal (titanium or stainless steel) for exterior protection and aesthetics, while the inner portion uses low-specific-gravity metal (magnesium or aluminum) for structural support and weight reduction. This segmentation allows each portion to contribute its optimal properties to the overall device.
Solution Approach 2:
The housing employs a composite structure combining different metal materials (titanium or stainless steel with magnesium or aluminum) to achieve both high strength and reduced manufacturing cost. The composite design allows optimization of material usage in different regions.
3Weight of moving object
If a heterojunction of metals with different melting points (e.g., titanium or stainless steel with magnesium or aluminum) is used, then the weight is reduced, but the fabrication difficulty increases due to welding and diecasting challenges
Solution Approach 1:
The middle portion acts as an intermediary component that couples the outer portion and inner portion. It is configured to be electrically connected to both portions and has a melting point within a specific range that facilitates diecasting process compatibility. This intermediary structure mediates the joining between dissimilar metals with different melting points.
Solution Approach 2:
The melting point of the middle portion is specifically controlled to be within a predetermined range (e.g., 450-650°C) to optimize the diecasting process. By adjusting this critical parameter, the fabrication difficulty is reduced while maintaining the weight benefits of the heterojunction structure.
4Weight of moving object
If a heterojunction of metals with different thermal expansion coefficients is used, then the weight is reduced, but the junction surface quality deteriorates due to widening and bending during diecasting
Solution Approach 1:
The middle portion acts as an intermediary component that couples the outer portion and inner portion. It is configured to be electrically connected to both portions and has a melting point within a specific range that facilitates diecasting process compatibility. This intermediary structure mediates the joining between dissimilar metals with different melting points.
Solution Approach 2:
The melting point of the middle portion is specifically controlled to be within a predetermined range (e.g., 450-650°C) to optimize the diecasting process. By adjusting this critical parameter, the fabrication difficulty is reduced while maintaining the weight benefits of the heterojunction structure.
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 design results in a lightweight electronic device with reduced manufacturing costs and time, while maintaining structural integrity and functionality.
Implementation Method 1
a middle portion comprising a third conductive material having a second melting point and an injection molded insulator
Implementation Method 2
a portion of the middle portion is coupled to the outer portion to define a concave-convex structure
Implementation Method 3
the middle portion and the inner portion are made by a diecasting method
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An electronic device according to an embodiment may include a housing comprising: an outer portion defining at least a portion of an exterior of the electronic device and comprising a first conductive material, an inner portion comprising a second conductive material having a first melting point different from that of the first conductive material and at least partially defining a space for receiving multiple electronic components arranged inside the electronic device, and a middle portion comprising a third conductive material having a second melting point and an injection molded insulator, wherein the third conductive material of the middle portion and the first conductive material of the outer portion are coupled to form a concave-convex structure, a difference between the first melting point and the second melting point is in a first range, and the third conductive material of the middle portion is electrically connected to the second conductive material of the inner portion. Various other embodiments identified through the specification are possible.