Strain-Relieved Screen Mounting Patches for Rolled Substrates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current projection screen substrates face challenges in mechanical functionality and installation due to increased optical requirements, particularly when rolled onto a core, leading to stress and potential deformation, which complicates handling and tensioning.
Innovation Solution
The use of strain-relieved mounting patches with notches or slits that reduce strain on the screen when rolled, maintaining in-plane rigidity and distributing mechanical loads evenly across the substrate, thereby minimizing stress and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the screen is rolled onto a core for shipping and installation, then ease of handling is improved, but strain and potential deformation of the substrate occur
Solution Approach 1:
The mounting patch is segmented by introducing notches or slits that divide the continuous material into sections. This segmentation allows the patch to flex and conform to the curved surface of the rolled screen during shipping, while still maintaining attachment capability and distributing strain across multiple discrete points rather than creating continuous stress.
2Force
If mounting patches are used to attach the screen to a frame, then mechanical load distribution is improved, but in-plane rigidity is reduced
Solution Approach 1:
The mounting patch exhibits local quality variations through strategically placed notches or slits in specific regions. These local modifications create zones of reduced stiffness that allow for strain relief and flexibility where needed, while other regions of the patch maintain sufficient rigidity to effectively distribute mechanical loads across the screen substrate when mounted to the frame.
3Stability of the object's composition
If the mounting patch is made stiffer to maintain in-plane rigidity, then substrate stability is improved, but strain relief capability is reduced
Solution Approach 1:
The mounting patch is designed with dynamic characteristics through the inclusion of notches or slits that enable it to adapt its stiffness properties. When the screen is rolled or bent during handling, the notches allow the patch to flex and relieve strain dynamically. When the screen is mounted flat to the frame, the patch maintains sufficient rigidity to distribute loads effectively, thus exhibiting different mechanical behaviors under different operational conditions.
Data Source
AI summary
A method of mounting screen material may include a screen mounted to a frame at multiple mounting points. One embodiment may include mounting patches attached along the perimeter of the screen. These mounting patches may be strain relieved in order to enable rolling the screen without sacrificing the in-plane rigidity of the patches when the screen is mounted to a frame. Stated differently, the strain relieved patches may reduce the strain on the screen in the circumstance the screen is rolled onto a core. The mounting patches may be strain relieved by locating notches or slits in the mounting patch.