Rollable Display Chain and Sprocket Design for Stable Panel Motion
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Solution Overview
Problem
Existing display devices, particularly rollable ones, face challenges in stability and user convenience during winding and unwinding, with issues related to swaying and uneven force distribution.
Innovation Solution
A display device incorporating a display panel, a roller with a first spring, chain units connected to the panel, and driving sprockets to move the panel upward/downward, utilizing a zipper-type chain unit and equilibrium between internal and external springs for stable movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a roller mechanism is used to wind and unwind the display panel, then the display device can be rolled up for compact storage, but the display panel may sway or move unevenly during the winding process
Solution Approach 1:
The patent introduces a spring mechanism that dynamically adjusts the tension parameter during the winding process. The spring maintains optimal tension on the display panel throughout winding and unwinding, preventing swaying and ensuring stable movement. This parameter change (tension control) resolves the contradiction between compact storage and panel stability.
2Device complexity
If manual winding is implemented without spring assistance, then the device structure remains simple, but the user experiences uneven force distribution and reduced convenience
Solution Approach 1:
The spring acts as a counterweight mechanism that balances the force required for winding and unwinding the display panel. By providing opposing elastic force, the spring equalizes the effort needed in both directions, making operation convenient while adding minimal structural complexity.
3Adaptability or versatility
If the display panel is made flexible for rolling capability, then the device can be rolled up, but the structural integrity and durability during movement are compromised
Solution Approach 1:
The spring mechanism dynamically controls the tension parameter applied to the flexible display panel during winding and unwinding. By maintaining optimal tension levels, the spring prevents excessive stress and deformation, preserving the structural integrity and durability of the flexible panel while enabling rolling capability.
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
Improves reliability and durability, enhances user convenience by stabilizing the display panel movement and balancing forces during winding and unwinding processes.
Implementation Method 1
a first spring disposed in the roller
Implementation Method 2
a plurality of second springs connected to the plurality of driving sprockets
Data Source
AI summary
A display device includes a display panel, a roller around which the display panel is wound or from which the display panel is unwound, a first spring disposed in the roller, a plurality of chain units connected to the display panel and configured to move the display panel in an upward/downward direction, a plurality of driving sprockets disposed to engage with the plurality of chain units and configured to move the plurality of chain units, and a plurality of second springs connected to the plurality of driving sprockets.