Rollable Display Joint Structure for Leak-Resistant Assembly
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Solution Overview
Problem
Existing display devices face challenges in assembly convenience, oil leakage during joint coupling, and fatigue failure of joint structures.
Innovation Solution
A display device with an elongated housing, a roller, a display panel, a module cover, a foldable link, and a link bracket, featuring a coupling protrusion and a coupling plate, which are secured with screws and bearings to enhance assembly and reduce fatigue and oil leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional joint coupling is used, then assembly is simpler, but oil leakage occurs and fatigue failure increases
Solution Approach 1:
The joint structure is divided into multiple functional components: coupling protrusion for connection, coupling plate for reinforcement, bearing for rotation support, and seal for oil containment. This segmentation allows each component to address specific issues (leakage, fatigue, assembly) while working together to improve overall joint reliability without excessive complexity.
Solution Approach 2:
A bearing is introduced as an intermediary component between the rotating link and the housing. This bearing mediates the rotational movement, reducing friction and preventing oil leakage from the joint, thereby improving durability without significantly complicating the assembly process.
2Strength
If rigid joint coupling is used, then structural strength is higher, but fatigue failure increases
Solution Approach 1:
The link is designed to be foldable and rotatable rather than completely rigid, allowing dynamic movement at the joint. The bearing enables smooth rotation while the coupling protrusion and plate maintain structural strength. This dynamic design reduces stress concentration and fatigue failure while preserving necessary joint strength.
3Productivity
If simple coupling is used, then assembly is faster, but oil leakage occurs
Solution Approach 1:
A seal is introduced as an intermediary element within the coupling structure to prevent oil leakage. The seal is integrated into the existing coupling protrusion and plate design, adding leakage protection without requiring a completely different coupling mechanism, thus maintaining assembly speed while eliminating the harmful oil leakage effect.
4Reliability
If complex joint structure is used, then fatigue failure is reduced, but assembly convenience deteriorates
Solution Approach 1:
The joint is segmented into modular components (coupling protrusion, coupling plate, bearing, seal) that can be assembled in a standardized sequence. This modular segmentation improves fatigue resistance through better stress distribution while maintaining assembly convenience through consistent assembly patterns and standardized interfaces between components.
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 assembly convenience, reduces oil leakage, and enhances the durability of joint structures by providing a robust and stable connection mechanism.
Implementation Method 1
a bearing located between the pivot shaft and the foldable link, the pivot shaft being inserted into the bearing
Data Source
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AI summary
Provided is a display device. The display device includes an elongated housing; a roller installed inside the housing; a display panel wound on or unwound from the roller; a module cover elongated in a longitudinal direction of the housing and having a plurality of segments sequentially arranged in an up-down direction of the display panel at a rear of the display panel; a top case located at an upper end of the display panel and coupled to the module cover; a foldable link located at a rear of the module cover and having one side pivotably connected to the housing; a coupling protrusion protruding from the top case to the rear of the module cover; and a link bracket pivotably connected to the other side of the foldable link and supporting the coupling protrusion.