Slatted Door Impact Resistance via Hook Channel Segmentation
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Solution Overview
Problem
Slatted doors are vulnerable to damage and disengagement when exposed to impact forces or high pressures, such as extreme weather conditions, and existing solutions require heavier slats to withstand such pressures.
Innovation Solution
A door assembly featuring a flexible door with integrally formed slats that engage via hook and channel mechanisms, forming a reinforcement impact distribution structure to secure and redirect impact forces along the slats' length, combined with a guide rail assembly and end members for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If slats are made heavier to withstand impact forces, then impact resistance is improved, but weight increases
Solution Approach 1:
The door is divided into multiple individual slats that are connected through hook portions and curved channels. Each slat can move independently to absorb impact forces, distributing the stress across the entire door structure rather than requiring each slat to be individually heavy and strong.
Solution Approach 2:
Adjacent slats are merged through their hook portions and curved channels to form a unified impact distribution structure. This merging allows impact forces to be distributed across multiple slats simultaneously, achieving high impact resistance without increasing individual slat weight.
2Strength
If slats are made more rigid to prevent damage, then durability is improved, but flexibility and ability to withstand high pressure are reduced
Solution Approach 1:
The slat connection system allows slats to move dynamically relative to each other through the hook portions and curved channels. During high pressure events, slats can shift and rotate to accommodate pressure changes, while maintaining structural integrity. This dynamic behavior provides both durability and adaptability to pressure conditions.
3Reliability
If slats are securely connected to prevent disengagement, then reliability is improved, but ability to absorb impact forces is reduced
Solution Approach 1:
The hook portions and curved channels create a dynamic connection system that is securely engaged during normal operation but allows controlled movement during impact events. The rotatable engagement maintains reliability while the ability to move allows impact force absorption.
Solution Approach 2:
The curved channel design provides a cushioning effect by allowing gradual engagement and disengagement of slats during impact events. The geometry of the curved channels absorbs impact forces through controlled movement before full engagement, protecting the connection system from sudden shock loads.
Data Source
AI summary
A shutter roller door with a shutter roller drivable by a drive mechanism; a flexible door windable on the roller and movable between retracted and extended positions by the drive mechanism, the door having integrally formed interconnected slats, each having upper and lower edges, and arranged perpendicular to a direction of door travel; a guide rail assembly positioned at each side; and end members attachable to an end of a corresponding slat. Each slat has an upper hook portion and an upper curved channel, the upper hook portion configured to engage with a lower curved channel of the lower edge of an upper adjacent slat, and the lower edge having a lower hook portion and a lower curved channel configured to engage with the upper curved channel of the upper edge of a lower adjacent slat.