Soft Screen Support Frame With Dynamic Tension for Flat Projection
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Solution Overview
Problem
Large, traditional hard projection screens are costly, inconvenient to transport and install, and may not be flat enough for super short-throw laser TV sets, while soft screens, although more flexible, can be poorly flat when installed on walls.
Innovation Solution
An adjustable supporting device for soft screens featuring a frame with strip-shaped connectors and automatic force adjusting units that provide varying push forces to maintain flatness, allowing the screen to expand when heated and contract when cooled, ensuring optimal image display and prolonged service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a hard screen is used for projection, then the screen is perfectly flat, but the screen is costly and inconvenient to transport and install
Solution Approach 1:
The frame is divided into multiple sub-frames connected in sequence, allowing the large screen to be segmented into manageable sections for easier transport and installation while maintaining overall flatness through the connector system
Solution Approach 2:
The patent uses a soft screen material that can be rolled for transportation, replacing the rigid hard screen while achieving comparable flatness through the supporting frame and connector system
2Ease of operation
If a soft screen is used for projection, then the screen is easy to transport and install, but the screen is poorly flat
Solution Approach 1:
The strip-shaped connectors include an automatic force adjusting unit that dynamically adjusts the push force applied to the soft screen based on temperature variations, maintaining optimal flatness under different operating conditions
Solution Approach 2:
The automatic force adjusting unit changes the push force parameter in response to temperature changes, compensating for thermal expansion and contraction of the soft screen to maintain consistent flatness
3Manufacturing precision
If the push force on the soft screen is increased to improve flatness, then the screen becomes flatter, but the screen cannot expand when heated
Solution Approach 1:
The automatic force adjusting unit provides a dynamic push force that varies with temperature, allowing the screen to expand when heated while maintaining flatness through adjusted connector pressure
Solution Approach 2:
The patent explicitly accounts for thermal expansion by designing the automatic force adjusting unit to generate varying push forces as the soft screen expands when heated and contracts when cooled, compensating for dimensional changes
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
The adjustable supporting device ensures the soft screen remains flat and functional over varying temperatures, improving display quality and extending its service life without increasing the non-display area, accommodating larger sizes and easier transportation and installation.
Implementation Method 1
an automatic force adjusting unit is arranged between the strip-shaped groove and corresponding strip-shaped connector to provide the strip-shaped connector with a push force outward in the direction perpendicular to the strip-shaped groove and to generate a varying push force as the soft screen expands when heated and contracts when cooled
Data Source
AI summary
The disclosure discloses an adjustable supporting device and a projection display device. The adjustable supporting device includes a frame and a plurality of strip-shaped connectors, wherein the frame includes a plurality of sub-frames connected in order, and a strip-shaped groove is arranged on the outer wall of each of the sub-frames and extends in the length direction of the sub-frames; each of the strip-shaped connectors has one side installed in corresponding one strip-shaped groove, and the other side located outside the strip-shaped groove to be connected with a side of the soft screen, and a position-limiting protrusion is arranged on the side of the strip-shaped connector located in the strip-shaped groove; and an automatic force adjusting unit is arranged between the strip-shaped groove and the corresponding strip-shaped connector.