C-Shaped Polymeric Grommet for Irregular Cable Mounting
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Solution Overview
Problem
Traditional cable hangers struggle to securely mount fiber optic and hybrid fiber/power cables due to their irregular shapes and increased weight, often resulting in poor fit and slippage with standard grommets.
Innovation Solution
A C-shaped grommet made of polymeric material with radial ribs, apertures, and flanges that extend outwardly, providing additional stability and flexibility to securely hold cables within cable hangers, accommodating irregular cable shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard grommets are used to mount fiber optic and hybrid fiber/power cables, then the mounting process is simple, but the grommets slip from the hanger and fail to securely hold the cables due to irregular cable shapes and increased weight
Solution Approach 1:
The grommet is divided into multiple functional segments: a C-shaped main body for insertion into the hanger, radially outward ribs for enhanced gripping, and flanges with protrusions for additional stability. This segmentation allows each part to perform its specific function optimally, resolving the contradiction between secure mounting and structural complexity.
Solution Approach 2:
The grommet incorporates flexible polymeric material that can dynamically adapt to irregular cable shapes. The material's elasticity allows the grommet to flex and conform to various cable geometries while maintaining a secure grip, enabling reliable mounting without requiring a complex adjustable structure.
2Adaptability or versatility
If grommets are made larger to accommodate irregularly shaped cables, then cable accommodation improves, but the grommet may not fit properly in the hanger
Solution Approach 1:
The grommet is designed as a nested structure where the C-shaped main body fits within the hanger cavity, while the radially outward ribs and flanges extend into the cable space. This nesting arrangement allows the grommet to accommodate large, irregularly shaped cables while maintaining proper fit within the hanger boundaries.
Solution Approach 2:
The grommet utilizes radial dimensionality with ribs and flanges extending outward from the main body. This radial expansion allows the grommet to accommodate cables of various sizes and shapes in the radial direction while maintaining a compact profile that fits within the hanger's longitudinal and transverse dimensions.
3Reliability
If the grommet is made of softer material to grip irregular cables, then cable grip improves, but the grommet may deform under the weight of heavy fiber cables
Solution Approach 1:
The grommet is constructed from composite polymeric material that combines the properties of softness for cable gripping with sufficient structural strength. The material composition allows the grommet to conform to irregular cable shapes while maintaining rigidity to support the weight of heavy fiber optic and hybrid fiber/power cables without excessive deformation.
Solution Approach 2:
The radially outward ribs and flanges with protrusions are pre-formed structural features that provide preliminary support and distribution of cable weight. These features are built into the grommet structure before cable installation, preventing localized stress concentrations that could cause deformation under heavy cable loads.
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
The grommet effectively secures cables by expanding radially and flexing to fit irregularly shaped cables, enhancing grip and stability within the hanger, preventing slippage and ensuring secure mounting on antenna towers.
Implementation Method 1
The grommet comprises: a generally C-shaped main body formed of a polymeric material... The plurality of apertures can impact the flexibility and/or hardness of the grommet, which can improve its ability to receive and/or capture and hold a cable
Data Source
AI summary
A grommet adapted for insertion into a cable hanger includes a generally C-shaped main body formed of a polymeric material and having a longitudinal axis. Such a grommet can be securely held by a cable hanger.