Foldable Display Middle Frame Protrusions for Drop Impact Support
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Solution Overview
Problem
Foldable electronic devices are prone to damage when falling due to misalignment of middle frames, leading to squeezing and impact on internal structures, especially as they become lighter and thinner with narrower contact surfaces.
Innovation Solution
Incorporating protrusion parts on the edges of the middle frames that face each other in the folded state to provide mutual support and reduce squeezing, with gaps between these parts optimized for effective abutment during falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the device is made lighter and thinner with narrower contact surfaces, then the appearance is improved and device portability is enhanced, but the mutual support effect between middle frames deteriorates, increasing vulnerability to damage during falls
Solution Approach 1:
The patent introduces protrusion parts that extend in the thickness direction (Z direction) from the middle frame surfaces. This dimensional extension allows the protrusion parts to abut against each other vertically when the device falls, providing mutual support without increasing the device's footprint area, thus maintaining the lightweight and thin design while improving fall resistance
Solution Approach 2:
The protrusion parts are pre-positioned on the middle frames at specific locations and orientations. When the device falls, these pre-positioned protrusion parts automatically engage and abut against each other, providing immediate mutual support before the impact force can damage the internal structures. This preliminary positioning enables passive protection without requiring active control
2Shape
If the contact surfaces between middle frames are narrowed to improve appearance, then the device becomes more aesthetically pleasing, but the mutual support effect during falls deteriorates, causing misalignment and squeezing of internal structures
Solution Approach 1:
Instead of widening the contact surfaces in the horizontal plane (X-Y direction), the patent extends protrusion parts in the vertical thickness direction (Z direction). This allows the protrusion parts to abut against each other during falls, providing mutual support and preventing misalignment without compromising the narrow contact surface design and aesthetic appearance
Solution Approach 2:
The protrusion parts are strategically positioned at specific locations on the middle frames where they can effectively abut against each other during falls. This localized structural enhancement provides targeted protection at critical points without requiring overall widening of the contact surfaces, maintaining both appearance and fall resistance
Data Source
AI summary
A foldable display terminal and a middle frame used in the foldable display terminal. The foldable display terminal includes a hinge structure, and a first middle frame and a second middle frame that are located on two sides of the hinge structure. An edge of the first middle frame includes a first top surface, an edge of the second middle frame includes a second top surface, the first top surface includes a first protrusion part, and the second top surface includes a second protrusion part. When the foldable display terminal is in a folded state, the first top surface faces the second top surface, a gap exists between the first top surface and the second top surface, the first protrusion part faces the second protrusion part, and a gap exists between the first protrusion part and the second protrusion part.