Wire-Suspended Screen Roller Structure to Prevent Sagging
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Solution Overview
Problem
Existing wire suspended screens for projection surfaces in large spaces with high ceilings suffer from sagging and wrinkles due to insufficient wire support at the ends, leading to a visually distracting large black area above the screen and additional weight from unused material.
Innovation Solution
A wire suspended screen design with a roller assembly featuring a cylindrical inner tube, spaced-apart sleeves, and equally spaced wires that wind over the inner tube, allowing the screen to be raised and lowered smoothly, minimizing deflection and eliminating the need for a large black area above the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wires are attached only at the ends of the roller to the upper corners of the projection surface, then the screen can be suspended, but the screen sags and develops wrinkles, diminishing aesthetic appeal and image quality
Solution Approach 1:
The roller is segmented into multiple sections with sleeves spaced along its length, and multiple wires are attached at different positions (including center and ends) rather than only at corners. This segmentation distributes the support load across multiple points, preventing sagging and wrinkles while maintaining screen flatness.
Solution Approach 2:
Different parts of the screen receive differentiated support: center wires address the sagging tendency in the middle of large screens, while end wires provide support at the corners. This localized quality enhancement ensures uniform tension and flatness across the entire projection surface.
2Ease of operation
If the projection surface is presented at eye level in large spaces with high ceilings, then the screen is at the appropriate viewing height, but a large area above the screen remains unused and visually distracting
Solution Approach 1:
The screen transitions from a fixed vertical position to a dynamically adjustable position along the vertical dimension. The wire suspension system with rotatable roller enables the screen to move up and down, allowing it to be positioned at eye level for optimal viewing while eliminating the need for a large static black area above it.
Solution Approach 2:
The screen assembly is made dynamic through the wire suspension and roller mechanism, allowing it to be raised and lowered as needed. This dynamic positioning capability enables the screen to adapt to different viewing requirements and eliminates the visual distraction of a permanently large black area above a fixed-position screen.
3Ease of operation
If a large black area above the screen is used to accommodate the projection surface at eye level, then the screen can be positioned correctly, but additional weight and bulk are required to roll the unused area
Solution Approach 1:
The unnecessary black area is extracted from the screen assembly. Instead of including excess material that must be rolled and supported, the screen is designed to deploy only the required projection surface area. The wire suspension system allows the screen to be positioned at eye level without requiring a large reserved area above it, thereby removing the extra weight and bulk.
Data Source
AI summary
A wire suspended screen includes a roller assembly and a screen assembly. The roller assembly includes an inner tube and a plurality of sleeves partially extending around the inner tube, defining a longitudinal recess along the roller. The sleeves are spaced apart, defining gaps. Wires are attached to the inner tube and wind over the outer surface of the inner tube in the gaps. The wires are attached to an upper slat of the screen assembly. As the roller is rotated, the wires wind and unwind from the inner tube to raise and lower the screen assembly, depending on the direction of rotation. When the screen assembly is raised, the upper slat fits into the longitudinal recess. As the screen is raised further, the screen assembly winds over the exterior surface of the sleeves and upper slat. The roller can be motor driven.