Retractable Security Grate Bar Winding System
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Solution Overview
Problem
Existing retractable security grates lack an efficient bar winding and packing system that optimizes space, particularly when fully packed, leading to larger casing requirements that can hinder installation in existing buildings and increase heat bridge issues.
Innovation Solution
A retractable security grate with a bar winding and packing system utilizing a shaped wheel and guides that allow bars to be packed using both vertical and horizontal dimensions, reducing the overall space needed by exploiting the horizontal dimension of the casing in addition to the vertical space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If conventional vertical packing systems are used, then the structure is simple, but the casing volume required is large
Solution Approach 1:
The patent transitions from conventional vertical packing to a winding system that utilizes both vertical and horizontal dimensions. The shaped wheel with radial guides winds the bars in a circular path, exploiting the horizontal dimension of the casing to reduce the required vertical space and overall casing volume.
Solution Approach 2:
The bars are wound and packed in a nested arrangement around the shaped wheel, with each bar positioned radially along the guides. This nesting approach allows efficient space utilization within the casing, minimizing the required volume.
2Quantity of substance
If more bars are packed in the same space, then the security coverage is improved, but the packing density requirement increases
Solution Approach 1:
The packing system divides the bars into discrete units that are individually engaged by the shaped wheel and guided along radial guides. This segmentation allows precise control over the positioning of each bar, enabling high packing density while maintaining manufacturing precision through the guided winding mechanism.
Solution Approach 2:
The radial guides act as intermediaries between the shaped wheel and the bars, ensuring precise positioning and controlled placement of each bar during the winding process. This intermediary mechanism maintains packing precision while enabling increased bar quantity.
Data Source
AI summary
Object of the present invention is a retractable security grate, provided with a bar winding and packing system which allows a dimension reduction of the casing needed to house the grate when it is completely lifted, since it allows to pack the bars by exploiting the horizontal dimension of the casing in addition to the space available in vertical direction.