Irregular Roll-Up Door Edge Manual Release Mechanism
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Solution Overview
Problem
Existing roll-up doors with manual release mechanisms, such as zippers or hook and loop constructions, are inefficient for emergency access when the door becomes inoperable due to power outages or mechanical failures, and can impair vision when integrated with flexible windows.
Innovation Solution
A manual release structure featuring an irregularly shaped door edge, a face frame slide with longitudinal notches, and a rail with variable slits that allow for adjustable force application to disengage the door edge from the guideway, enabling safe and efficient passage through the door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If zippers or hook and loop constructions are used for manual release, then the door can be opened manually when inoperable, but the actuation means must be reversed manually and can impair vision when integrated with flexible windows
Solution Approach 1:
The manual release mechanism is segmented into distinct functional components: the irregularly shaped door edge portion, the guideway with notches, and the rail system. This segmentation allows each component to perform its specific function independently, simplifying the overall actuation mechanism while maintaining ease of manual operation.
Solution Approach 2:
Instead of using traditional zippers or hook-and-loop constructions that require complex reversal for closing, the invention uses an irregularly shaped door edge that engages with notches in the guideway. The door is pulled down along the rail to engage the irregular edge with the guideway, and closing is achieved by simply rolling the door back down, eliminating the need for manual reversal of actuation means.
2Ease of operation
If traditional manual release mechanisms are used, then the door can be opened manually, but the force required is not adjustable and may be difficult to operate
Solution Approach 1:
The irregularly shaped door edge portion is designed with specific geometric parameters that can be varied to adjust the force required for manual release. By changing the shape, size, and configuration of the irregular edge and its interaction with the guideway notches, the actuation force can be optimized for ease of operation while maintaining secure engagement during normal use.
3Speed
If the door edge is regularly shaped for smooth operation, then the door rolls up smoothly, but manual release becomes difficult when the door is inoperable
Solution Approach 1:
The door edge is designed with local quality variation: the majority of the door edge maintains a smooth, regular shape for optimal rolling operation, while a specific portion of the edge features an irregular shape that engages with the guideway notches. This localized irregularity enables easy manual release without compromising the overall smooth rolling performance of the door.
Data Source
AI summary
A manual release structure and roll-up door assembly is provided such that the edges of the roll-up door can be intentionally disengaged from the guideway. This is accomplished by using modified roll-up door elements at the edges of the door. One modification is made to the rail within which the door edges reside when the door is in its down or “closed” position. Another modification is made to a face frame slide within which the rail resides. Still another modification is made to the edges of the roll-up door. Together, these modifications result in an improved manual release structure to be used when release of the door edge becomes necessary.