Cable Tensioning Anchor with Offset Lobe and Set Screw
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Solution Overview
Problem
Existing cable railing systems face challenges in efficiently and securely tensioning cables between terminal and intermediate posts, particularly in maintaining consistent tension and aesthetics, especially on inclined surfaces and complex configurations.
Innovation Solution
A cable tensioning device with an off-center set screw and sleeve crimping mechanism, combined with an offset lobe, is used to apply tension to the cable, which is then secured within a tensioning body within terminal posts, while intermediate posts have caps to maintain cable routing without additional tensioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional cable tensioning methods are used, then cable installation is simple, but consistent tension and aesthetics are difficult to maintain
Solution Approach 1:
The tensioning system is segmented into distinct functional components: a tensioning body for anchoring, a lobe for force application, and a set screw for tension control. This segmentation allows each component to perform its specific function efficiently, ensuring consistent cable tension while maintaining a manageable overall system complexity.
Solution Approach 2:
The lobe acts as an intermediary element between the set screw and the cable. It translates the rotational motion of the set screw into linear tension force on the cable, providing mechanical advantage and precise tension control. This intermediary mechanism enables consistent tensioning without requiring complex external equipment.
2Reliability
If cable tensioning is applied at all posts, then cable security is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The tensioning device is applied selectively only at terminal posts where cable anchoring is required, rather than at every post. Intermediate posts use simple caps for cable routing without tensioning. This local differentiation maintains cable security at critical locations while minimizing overall system complexity and installation difficulty.
3Shape
If internal tensioning systems are used, then aesthetics are improved, but installation precision requirements increase
Solution Approach 1:
The tensioning device is designed to be self-contained within the terminal post, with the tensioning body housing all necessary components (lobe, set screw, anchoring mechanism). This self-service design hides the tensioning mechanism from view, improving aesthetics, while the integrated nature of the components simplifies installation by reducing the number of separate precision-critical operations required.
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
This solution ensures consistent and secure cable tensioning, maintaining internal force within the posts and providing an aesthetically pleasing appearance by distributing tensioning forces effectively across the railing system, even on complex configurations.
Implementation Method 1
using a set screw to apply force to the lobe and tension to the cable rail
Implementation Method 2
crimping a sleeve to an end of the cable rail, inserting the cable into the tensioning body
Data Source
AI summary
A railing system includes a tensioning anchor which can be used for securing rails. The tensioning anchor has first and second conjoined holes or voids only partially overlapping one another. The first conjoined hole is sized to receive a terminal end of the rail, while the second conjoined hole is sized to receive a tensioner. Movement of the tensioner moves the terminal end of the rail to tension the rail.