Cable Laying Conduit With Narrow Groove Opening and Hanger Guidance
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Solution Overview
Problem
Existing cable laying methods using bundling suspension wires with predetermined interval holes complicate the insertion of guide wires, deteriorating the workability of laying optical drop cables.
Innovation Solution
A conduit with a suspension wire, hangers, and a groove along the axial direction, where the groove opening is narrower than the groove's interior, allowing a wire-carrying member to easily insert and guide cables through hangers, with a wire-carrying rod held in the groove and a cord accommodating the cable in through-holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable through holes are arranged at predetermined intervals in hanger members, then the cable can be supported at multiple points, but the insertion work of the guide wire becomes complicated and workability deteriorates
Solution Approach 1:
The invention divides the cable support function into two separate components: the suspension wire with continuous groove for guide wire insertion, and discrete hanger members with through holes for cable support. This segmentation allows each component to perform its specific function optimally without interfering with the other.
Solution Approach 2:
The invention introduces a wire-carrying member as an intermediary tool that temporarily carries the cable through the groove and into the hanger member. This intermediary facilitates the cable installation process by providing a guided path through the narrowing opening, eliminating the need for complex guide wire insertion through multiple predetermined holes.
2Ease of operation
If the groove opening width is equal to the maximum interior width, then the wire-carrying member can easily pass through, but the cable may get caught or misaligned during insertion
Solution Approach 1:
The groove is designed with non-uniform cross-section where the opening width is smaller than the maximum interior width. This local quality variation creates a guiding effect: the narrower opening ensures proper alignment and prevents cable misplacement, while the wider interior accommodates the cable smoothly after it passes through the opening.
Solution Approach 2:
Instead of making the opening wide to facilitate insertion and relying on external guidance, the invention inverts the approach by making the opening narrower and using the groove walls themselves as the guidance mechanism. The cable is guided into place by the groove structure rather than by a wide opening.
3Reliability
If multiple hanger members are used at predetermined intervals, then the cable can be securely supported, but the overall device complexity increases
Solution Approach 1:
The invention merges the suspension wire and hanger members into an integrated conduit system where the wire-carrying member serves both as a support element and as a cable guidance mechanism. This merging reduces the number of separate components needed and simplifies the overall structure while maintaining cable support stability.
Solution Approach 2:
The wire-carrying member performs multiple functions: it supports the cable at intervals through the hanger members, guides the cable through the groove during installation, and provides structural integrity to the conduit system. This multi-functionality reduces the need for separate specialized components.
Data Source
AI summary
A conduit for laying a cable includes a suspension wire, one or more hangers held by the suspension wire and having an accommodation space that accommodates the cable, and a groove extending along an axial direction of the suspension wire. The groove has an opening connected to the accommodation space. The opening has a width smaller than a maximum width of an interior of the groove.