Light Gauge Main Tee Splice With Five Locking Zones
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Solution Overview
Problem
The tensile strength of connections formed by integral end connectors in suspended ceiling grid main runners is limited by the design and strength of the connector and the gauge of the runner material, often requiring heavier metal gauges than necessary for proper performance.
Innovation Solution
An integral main tee connector with five locking zones and lanced catch elements, along with stiffening beads and a spring-like tab, is designed for use with light gauge metal, distributing tensile forces and enhancing coupling strength and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional integral end connectors are used with light gauge metal runners, then the connector design is simple, but the tensile strength is insufficient and local failure occurs
Solution Approach 1:
The connector is divided into five distinct locking zones, each with multiple engagement points. This segmentation distributes the tensile load across multiple locations rather than concentrating it at a single point, preventing local failure while maintaining overall connector strength without requiring heavier metal gauge
Solution Approach 2:
Stiffening beads are strategically placed at specific locations within the locking zones to provide localized reinforcement where tensile forces are concentrated. This local quality enhancement strengthens the connector at critical points without increasing the overall metal gauge throughout the entire connector body
2Strength
If heavier metal gauge is used for runners, then the tensile strength of the connection is improved, but the weight and material usage increase
Solution Approach 1:
By segmenting the connection into five locking zones with multiple engagement points each, the design achieves high coupling strength through distributed load bearing. This allows light gauge metal runners to maintain sufficient strength without the weight penalty of heavier material, as the multi-zone locking system compensates for the lower material strength
Solution Approach 2:
The connector utilizes a composite structure combining light gauge metal runners with a multi-zone locking mechanism that includes stiffening beads and engagement points. This composite approach creates a system where the overall coupling strength exceeds what would be achievable with heavier uniform material alone
3Reliability
If traditional connectors are used, then the manufacturing process is simple, but the risk of progressive total failure after local failure is high
Solution Approach 1:
The five locking zones with multiple engagement points create redundant load paths. If one engagement point or locking zone experiences local failure, the remaining zones continue to bear the load, preventing progressive total failure. This segmentation inherently provides fail-safe characteristics without requiring overly complex additional safety mechanisms
Solution Approach 2:
The design anticipates potential local failures by pre-distributing the load across five locking zones with multiple engagement points. This beforehand cushioning ensures that if one point fails, the system has already been prepared to handle the redistributed load through the remaining engagement points, preventing catastrophic progressive failure
Data Source
AI summary
An integral main tee connector arranged to couple with an identical connector stamped from metal strip material aligned strip-wise with material making a web of the main tee the connector when connected to another identical connector exhibiting at least five locking zones distributed over an expanse of each connector.