Pre-bent Cover Panel for Flat Configuration in Portable Electronics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In portable electronic devices, cover panels tend to bow outwardly due to manufacturing tolerances, leading to a non-flat configuration and increased device size, which complicates manufacturing and affects the cosmetic appearance and functionality.
Innovation Solution
A pre-bent cover panel is used, either by chemically strengthening one surface more than the other or by manufacturing it in a bent state, to create internal biasing forces that maintain a substantially flat configuration when assembled, eliminating the need for mechanical fasteners and adhesives along the lateral edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical fasteners and adhesives are employed along the lateral edges to secure the cover panel, then the cover panel achieves a secure fit, but the device size increases and manufacturing complexity increases
Solution Approach 1:
The patent removes mechanical fasteners and adhesives from the lateral edges of the device by implementing a bent frame structure that secures the cover panel through its geometry alone. The bent portions of the frame engage with corresponding features in the housing, eliminating the need for additional fastening elements and reducing overall device volume.
Solution Approach 2:
The frame incorporates bent portions with specific curvature that allow it to flex during assembly and then maintain a secure engagement with the housing. This curved geometry enables the frame to act as its own fastening mechanism, replacing traditional mechanical fasteners while reducing device complexity.
2Reliability
If mechanical fasteners and adhesives are employed along the lateral edges to secure the cover panel, then the cover panel achieves a secure fit, but manufacturing complexity increases
Solution Approach 1:
The patent combines the structural support function and the fastening function into a single bent frame component. The frame simultaneously supports the cover panel and secures it to the housing through its bent portions, eliminating the need for separate fasteners and adhesives, thereby simplifying manufacturing processes.
Solution Approach 2:
The bent frame structure is designed to self-secure the cover panel to the housing through its geometric configuration. The bent portions naturally engage with corresponding features in the housing during assembly, providing automatic alignment and secure fixation without requiring additional fastening operations or materials.
3Ease of manufacture
If the cover panel is manufactured in a flat state, then manufacturing is simpler, but the cover panel bows outwardly due to manufacturing tolerances
Solution Approach 1:
The cover panel is pre-bent to a specific curvature during manufacturing that compensates for expected outward bowing due to tolerances. This preliminary shaping ensures that when the panel is installed and subjected to normal stresses, it maintains a substantially flat appearance without requiring post-assembly adjustment or additional fastening elements.
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 pre-bent cover panel ensures a flat configuration, reducing the device's overall size, improving cosmetic appearance, and enhancing durability by avoiding the use of adhesives and interlocking tabs, which can fail during drops and increase device thickness.
Implementation Method 1
The cover panel may be bent by chemically strengthening one of two outer major surfaces to a greater extent than the other major outer surface.
Implementation Method 2
when the cover panel is assembled to the housing, the cover panel may be elastically bent and coupled thereto at the longitudinal ends of the cover panel
Data Source
AI summary
A portable electronic device is provided. The portable electronic device may include a housing and a cover panel that may cover a display. The cover panel may define a pre-bent configuration prior to being coupled to the housing. Thereby, the cover panel may be elastically bent during attachment to the housing. Thus, the cover panel may include internal forces as a result of the elastic bending that prevent the cover panel from bowing outwardly from the housing. Related assemblies and methods are also provided.