Locking Mechanism for Flexible Display Support Plates
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Solution Overview
Problem
Portable information devices with flexible displays face issues of waviness or bending due to level differences between support plates, causing instability and potential display defects when folded.
Innovation Solution
A portable information device design featuring a first and second chassis member with rotatable connection, supported by carbon fiber reinforced resin plates and locking members with recessed adhesive faces to maintain even contact and prevent level differences between support plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If locking pieces are fixed to support plates with adhesive, then the locking pieces are securely attached, but level differences occur between support plates causing display waviness
Solution Approach 1:
The adhesive layer is positioned only in the recessed portion of the locking piece, not covering the entire surface. This localized adhesive application maintains secure attachment while preventing excessive adhesive thickness from causing level differences between support plates, thus resolving the contradiction between attachment strength and flatness.
Solution Approach 2:
The locking piece includes a recessed portion that creates a depth dimension, allowing the adhesive to be positioned below the surface level. This dimensional change enables the adhesive to provide strong bonding while the recessed structure prevents the adhesive from creating height variations that would cause display waviness.
2Strength
If a large adhesive layer is used to fix locking pieces, then bonding strength increases, but the adhesive thickness causes level differences between support plates
Solution Approach 1:
The adhesive is confined to a recessed portion of the locking piece rather than being applied across the entire locking piece surface. This localized application provides sufficient bonding strength while limiting the adhesive's vertical extent, preventing level differences between support plates.
Solution Approach 2:
The recessed portion is pre-formed in the locking piece structure before adhesive application. This preliminary structural preparation creates a designated space for the adhesive that limits its height, ensuring that bonding strength is achieved without compromising the flatness of the support plate assembly.
3Length of moving object
If support plates are made thin to reduce device thickness, then portability improves, but level differences between plates become more significant
Solution Approach 1:
The adhesive is positioned in a recessed portion of the locking piece, creating a localized bonding zone that does not add to the overall height of the support plate assembly. This allows thin support plates to be used while maintaining precise level alignment through the controlled adhesive placement.
Solution Approach 2:
The recessed portion introduces a depth dimension in the locking piece structure, allowing the adhesive to be positioned below the surface level. This enables thin support plates to be joined without the adhesive creating height variations, thus maintaining both portability and manufacturing precision.
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 stabilizes the display by preventing level differences and waviness, ensuring proper folding and usage without curvature or defects, enhancing visibility and durability.
Implementation Method 1
a first adhesive face to which a part of the other is fixed with the adhesive
Data Source
AI summary
A portable information device capable of supporting a display is described. The portable information device includes a first chassis member and a second chassis member connected mutually rotatable, a first support plate that supports a display on the side of the first chassis member, a second support plate that supports the display on the side of the second chassis member, a first locking member including a first fixing portion to be fixed to the rear face of the first support plate with adhesive, and a first locking piece projecting from one end face of the first support plate, the first locking piece being configured to come in contact with and separate from the rear face of the second support plate. The first support plate includes a first contact face with which the first locking member comes in contact and a first adhesive face that fixes the first locking member with the adhesive. The first adhesive face is recessed from the first contact face by a thickness of the adhesive.