Rotating Chassis Locking Mechanism for Flexible Display Noise Suppression
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Solution Overview
Problem
Portable information devices with flexible displays face noise generation due to misalignment of end faces during rotational movement, as existing locking mechanisms are difficult to implement across the entire length of the chassis, leading to uneven contact and noise.
Innovation Solution
A portable information device design featuring a first and second chassis with rotatable plates, a display assembly with a bending region, and protruding locking pieces and protruding parts that overlap in the thickness direction, ensuring proper alignment and contact between the plates to suppress noise during rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If locking pieces are provided over the entire length of plate end faces to suppress misalignment, then alignment precision is improved, but device complexity and installation space requirements increase
Solution Approach 1:
The locking mechanism is segmented into discrete locking pieces positioned at specific locations rather than continuous coverage. The locking pieces are distributed at intervals along the plate end faces, providing necessary alignment function while reducing overall structural complexity and installation space requirements.
Solution Approach 2:
The locking pieces are strategically positioned at locations where alignment is most critical, rather than uniformly distributing locking function across the entire end face. This localized approach concentrates alignment capability where needed most, maintaining precision while minimizing structural complexity.
2Volume of moving object
If the chassis is made smaller and thinner to meet size requirements, then device compactness is improved, but the space available for locking pieces is reduced
Solution Approach 1:
The locking mechanism uses discrete, spaced-apart locking pieces rather than continuous structures. This segmentation allows the locking function to be achieved with minimal material and space, enabling implementation in thin-chassis designs where continuous locking structures would be too bulky.
Solution Approach 2:
Instead of providing locking coverage over the entire end face length, the invention uses a partial arrangement of locking pieces at selected positions. This partial action is sufficient to prevent noise and misalignment while accommodating the limited space in compact chassis designs.
3Volume of moving object
If locking pieces are reduced in number due to space restrictions, then device compactness is improved, but noise generation increases due to end face misalignment
Solution Approach 1:
The locking pieces are positioned at specific locations where they can most effectively prevent noise-generating misalignment. By concentrating locking function at critical points rather than uniform distribution, the design suppresses noise with minimal number of locking pieces, maintaining compactness.
Solution Approach 2:
The locking pieces act as intermediary elements between the first and second plates, mediating the interface to prevent misalignment and noise. These discrete intermediaries are sufficient to control the interaction between plates without requiring continuous contact, thus maintaining compact design while suppressing noise.
Data Source
AI summary
A portable information device includes: a first chassis; a second chassis coupled to be rotatable relative to the first chassis; a first plate fixed to the first chassis; a second plate fixed to the second chassis to be adjacent to the first plate; a display having a bending region; a first locking piece protruding from the first plate beyond a first end face to be able to come into contact with and separate from the second plate; a second locking piece protruding from the second plate beyond a second end face to be able to come into contact with and separate from the first plate; and a protruding part provided to protrude from at least one of the first end face and the second end face toward the other to come into contact with the other in a flat plate form.