Expandable Mandrel for Optical Cable Tensioning
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Solution Overview
Problem
Existing optical cable installation methods, such as the use of clips and bulky cable winders, fail to effectively tension optical cables to run close to walls or corners without causing visual impact or damaging surfaces, and existing tensioning devices are complex and not suited for such applications.
Innovation Solution
An expandable mandrel with facing brackets and a rotatable central member that increases the cable winding circumference by moving the brackets apart, allowing for tensioning of optical cables close to walls or corners, and a system comprising this mandrel and a box for secure cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If clips are used to maintain cable along a straight line, then cable alignment is improved, but visual impact and surface damage increase
Solution Approach 1:
The patent introduces a tensioning member as an intermediary device between the cable and the wall surface. This tensioning member applies tension to the cable through a mandrel mechanism, allowing the cable to maintain a straight alignment without direct contact with clips that would damage or mark the wall surface.
Solution Approach 2:
The patent replaces the mechanical clipping system with a tension-based mechanical system. Instead of using clips to physically hold the cable against the wall, the invention uses a tensioning member with a mandrel that applies controlled tension to maintain cable alignment, eliminating the need for surface-mounted clips.
2Adaptability or versatility
If bulky cable winders are used for cable management, then cable winding capability is improved, but device size and installation flexibility worsen
Solution Approach 1:
The patent employs a nested structure where the optical cable is wound around a mandrel that is contained within the tensioning member housing. The mandrel can be rotated to wind or unwind the cable, and the entire assembly is compact enough to be mounted on walls or corners without requiring bulky external winders.
Solution Approach 2:
The patent introduces dynamic elements including a rotatable mandrel for winding the cable and an expandable mandrel mechanism with movable brackets that can increase the cable winding circumference. This dynamic structure allows the device to adapt to different cable lengths and winding requirements while maintaining a compact form factor.
3Force
If existing tensioning devices are used, then cable tensioning is improved, but device complexity and suitability for wall/corner installation worsen
Solution Approach 1:
The patent divides the tensioning device into distinct functional segments: a housing portion for mounting, a mandrel for winding the cable, and an optional expandable mechanism with movable brackets. This segmentation allows each component to perform its specific function efficiently while keeping the overall device relatively simple and suitable for various installation locations including walls and corners.
Solution Approach 2:
The tensioning member is designed with universal mounting capabilities that allow it to be installed on walls, corners, or other surfaces. The housing portion can be mounted in multiple orientations and locations, and the expandable mandrel mechanism can accommodate different cable tensions and winding configurations, making the device versatile for various installation scenarios.
Data Source
Figure 1a~1b
Figure 1c~3
Figure 4~5
AI summary
Disclosed is an optical cable tensioning member comprising an expandable mandrel, wherein said expandable mandrel comprises a first bracket and a second bracket forming a cable winding circumference, the first bracket having a first inner surface and the second bracket having a second inner surface which is at a distance from said first inner surface, wherein said expandable mandrel further comprises a rotatable central member which is configured, when turned, to increase said distance and expand said cable winding circumference.