Threaded Cable Tensioning Sleeve for Accessible Playground Adjustment
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Solution Overview
Problem
Cable-based climbing structures in playgrounds face challenges in installation and maintenance due to complex or difficult-to-access mechanisms for adjusting cable tension, which can lead to wear and tear over time.
Innovation Solution
A system featuring a cable retaining device with a cylindrical body and threads on its outer surface, integrated with a tightening sleeve that allows for easy adjustment of cable tension through rotation, utilizing a low-friction interface for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional cable tensioning mechanisms are used, then cable tension can be adjusted, but the mechanisms are complex and difficult to access
Solution Approach 1:
The tensioning system is segmented into distinct functional components: a cable retaining device with cable receiving channels, a tightening sleeve with external threads, and a housing. This segmentation allows each component to perform its specific function independently while simplifying the overall mechanism, making it easier to manufacture, assemble, and maintain compared to integrated complex mechanisms.
Solution Approach 2:
The tension adjustment function is extracted and isolated into a dedicated tightening sleeve component that can be independently accessed and operated. The cable retaining device is also extracted as a separate component with specific cable receiving channels, allowing the tensioning mechanism to be accessed and adjusted without disassembling the entire structure, thereby improving ease of operation.
2Ease of operation
If traditional cable tensioning mechanisms are used, then cable tension can be adjusted, but the mechanisms are difficult to access
Solution Approach 1:
The cable retaining device is nested within the housing, and the tightening sleeve is nested within or adjacent to the cable retaining device. This nested arrangement allows the tensioning mechanism to be compact while maintaining accessibility through the housing opening. The components are arranged so that the tightening sleeve can be operated without removing the cable retaining device from the housing, improving accessibility while keeping the mechanism integrated.
3Reliability
If cable tension is not properly maintained, then installation is simpler, but the structure experiences wear and tear over time
Solution Approach 1:
The cable retaining device is pre-configured with cable receiving channels and threaded features during manufacturing. The housing is pre-assembled with the retaining device in place. This preliminary preparation allows cables to be quickly installed and tensioned without complex field adjustments, maintaining ease of installation while ensuring proper tensioning capability for long-term durability.
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
Facilitates convenient and efficient tension adjustment of cables, reducing maintenance needs and ensuring the structure remains taut and durable over time.
Implementation Method 1
a cable retaining device having a cylindrical shaped body with threads disposed around an outer circumferential surface
Implementation Method 2
utilizing a low-friction interface for smooth operation
Data Source
AI summary
A piece of playground equipment is disclosed and includes a system for tensioning one or more cables. The system includes a cable retaining device having a cylindrical shaped body with threads disposed around an outer circumferential surface, the outer circumferential surface being interrupted in at least one location by one or more cable receiving channel. The system also includes a tightening sleeve into which the cable retaining device is configured to be threaded such that the cable retaining device moves as the tightening sleeve is rotated.