Retractable Banner Using Elastic Memory for Automatic Retraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing retractable banners require complex mechanisms for retraction and extension, which complicates their operation and storage.
Innovation Solution
A retractable banner system with elongated rigid support posts and banner segments that have a built-in memory characteristic, allowing them to automatically form a closed coil configuration when the posts are brought together, eliminating the need for complex mechanisms by using a resilient middle piece and tubular sleeve to secure the banner segments, enabling easy transition between display and storage positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex mechanisms are used for retraction and extension, then the banner can be reliably retracted and extended, but the device complexity increases
Solution Approach 1:
The banner material itself provides the retraction force through its memory characteristic, eliminating the need for external springs or motors. The material serves both as the display surface and as the actuating element that automatically returns the banner to its retracted state
Solution Approach 2:
The patent replaces traditional mechanical retraction mechanisms (springs, motors, gears) with a material-based solution where the banner material's inherent memory properties provide the retraction force, substituting a mechanical system with a material property-based system
2Area of moving object
If the banner is extended to maximum separation distance for display, then the display area is maximized, but the banner cannot be easily stored
Solution Approach 1:
The banner transitions between two dynamic states: extended for display and retracted for storage. The material's memory characteristic enables automatic transition from the extended state back to the retracted state, making storage as easy as extension
Solution Approach 2:
The banner automatically performs the storage function by utilizing its material memory properties to return to the retracted configuration without requiring manual winding or mechanical assistance
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 system simplifies the operation of retractable banners by allowing them to automatically return to a closed coil configuration for storage, reducing complexity and enhancing usability, while maintaining a stable display position with maximum separation distance between posts.
Implementation Method 1
Each banner segment is constructed and arranged with a re-coil or retractable characteristic providing a tendency (memory) to form into a closed coil configuration
Data Source
AI summary
A banner unit has a retractable storage position and a display position. The banner unit includes a pair of elongated rigid support posts, and a banner sheet that is comprised of a pair of one and other banner segments that each have opposed one and other side edges. The one side edge of each banner segment is secured to respective elongated rigid support posts. The banner unit also includes an elongated tubular sleeve constructed and arranged to be disposed in parallel with both of the pair of elongated rigid support posts, with the other side edge of each banner segment being secured to the elongated tubular sleeve. Each banner segment is constructed and arranged with a re-coil or retractable characteristic providing a tendency to form into a closed coil configuration when the elongated rigid support posts are brought together.