Transparent Display Cover Reel Structure for Quiet Aligned Motion
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Solution Overview
Problem
Existing transparent display devices face issues with noise and wear during cover movement, inclination, and mismatched cover unwinding and rewinding lengths, which affect the functionality and durability of the device.
Innovation Solution
A display device design incorporating a display panel, frame, roller, cover, and a mechanism with helix-shaped grooves on reels to manage wire unwinding and rewinding, minimizing noise and wear, and ensuring proper cover alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cover is moved back and forth to open or close the rear of the display panel, then the functionality of accessing the rear is improved, but noise and wear occur during movement
Solution Approach 1:
A wire is introduced as an intermediary element between the cover and the reel mechanism. The wire transmits the force applied to the cover to the reel, enabling smooth movement while reducing direct friction and wear between mechanical components. This mediator approach minimizes noise and wear during cover operation.
2Device complexity
If a simple cover movement mechanism is used, then the device complexity is reduced, but the cover may incline to one side
Solution Approach 1:
The solution introduces a rotational dimension by using a reel that winds and unwinds the wire. Instead of simple linear movement that causes inclination, the wire is wound around the reel in a controlled manner, adding a rotational degree of freedom that maintains cover alignment while achieving the desired movement functionality.
3Adaptability or versatility
If the cover is unwound from the roller, then the cover can be positioned freely, but the length of unwound cover may not match the length of wire wound around the reel
Solution Approach 1:
The reel mechanism provides inherent feedback control for the wire length. As the cover moves and the wire unwinds from the reel, the rotational position of the reel naturally regulates the amount of wire released. This feedback mechanism ensures that the wire length wound on the reel matches the cover length unwound from the roller, maintaining precision while allowing flexible positioning.
Data Source
AI summary
A display device may include: a display panel; a frame to which the display panel is coupled; a roller extending along one side of the display panel; a cover unwound from or wound around the roller; a bar which is positioned behind the display panel, to which one end of the cover is fixed, and which is movably coupled to the frame; a pair of reels which opposite each other with respect to the roller; a driving assembly which rotates the pair of reels; and a pair of wires which are wound around or unwound from the pair of reels, and which are fixed to the bar, wherein the reel may include a groove which is formed in a helix shape on an outer circumferential surface of the reel, and around which the wire is wound or from which the wire is unwound.