Fiber Composite Back Cover With Unequal Thickness for Frame Fit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current glass back covers in electronic devices cannot meet user personalization requirements and are not compatible with middle frames designed for other materials due to their thickness, leading to a need for alternative materials that adapt to existing designs.
Innovation Solution
A back cover made of a fiber composite material with an unequal thickness structure, featuring a thin thickness bottleneck region for the battery area and a thicker non-thickness bottleneck region, allowing it to fit with glass back covers while reducing overall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a glass back cover is used, then the thickness is reduced, but the material cannot meet user personalization requirements and cannot be adapted to middle frames designed for other materials
Solution Approach 1:
The patent uses a fiber composite material (such as carbon fiber reinforced plastic) to manufacture the back cover. This composite material enables the back cover to achieve both thin thickness and sufficient strength, while also allowing for personalized designs and compatibility with middle frames designed for other materials. The fiber composite structure provides high strength-to-weight ratio and design flexibility.
Solution Approach 2:
The patent implements an unequal thickness structure where different regions of the back cover have different thickness values. Specifically, a first region has a first thickness and a second region has a second thickness that is greater than the first thickness. This local quality variation allows the back cover to adapt to different structural requirements in different areas, enabling compatibility with middle frames while maintaining overall thinness.
2Adaptability or versatility
If a back cover of another material is used to improve personalization, then material diversity is increased, but the thickness increases and cannot be adapted to the middle frame
Solution Approach 1:
The fiber composite material provides personalized design options while maintaining thin thickness. The composite structure allows for varied surface treatments, patterns, and colors without significantly increasing thickness, thus meeting user personalization requirements while staying compatible with the middle frame design.
Solution Approach 2:
By implementing an unequal thickness structure with a first region having first thickness and a second region having second thickness (greater than first thickness), the design accommodates personalized aesthetic requirements in certain areas while maintaining overall thinness for frame compatibility.
3Length of moving object
If the back cover thickness is reduced to adapt to the middle frame, then frame compatibility is improved, but the structural strength may be compromised
Solution Approach 1:
The fiber composite material (e.g., carbon fiber reinforced plastic) provides high strength-to-weight ratio, enabling the back cover to maintain sufficient structural strength even with reduced thickness. The composite structure distributes stresses effectively throughout the material, compensating for the reduced thickness.
Solution Approach 2:
The unequal thickness structure strategically places thicker regions (second region with second thickness) in areas requiring higher strength and thinner regions (first region with first thickness) in areas where strength requirements are lower. This optimizes the strength-thickness ratio across different parts of the back cover.
Data Source
AI summary
A back cover of an electronic device and an electronic device are provided. The back cover of the electronic device includes: a first structure layer including a first region and a second region, where a thickness of the first region is greater than a thickness of the second region, the second region forms a second region orthographic projection along a thickness direction of the electronic device, a battery of the electronic device forms a battery orthographic projection along the thickness direction of the electronic device, and the second region orthographic projection includes the battery orthographic projection. The back cover can be adapted to a middle frame of an electronic device with a glass back cover.