Drain Cleaning Cable Hollow Base Wire Segmentation
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Solution Overview
Problem
Conventional drain cleaning cables are heavy and difficult to transport due to their robustness, which is necessary for withstanding the torque required to break up clogs, making them cumbersome to maneuver and use.
Innovation Solution
A drain cleaning cable with a hollow base wire that reduces weight by carrying 90% of its stress through the outer 50% of its cross-sectional diameter, and a design featuring an inner and outer wire with helical coils that are adjustable and include working implements for clog removal, allowing for reduced mass and improved portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cable uses a solid robust construction to withstand torque, then strength is improved, but weight increases making it difficult to transport
Solution Approach 1:
The cable is divided into an inner core and an outer wire that are helically wound around each other. This segmentation allows each component to contribute to torque resistance while reducing overall material usage compared to a solid construction, thereby maintaining strength while reducing weight.
Solution Approach 2:
The cable employs a composite structure with an inner core and an outer wire made of different material configurations. The outer wire is helically wound around the inner core, creating a composite construction that optimizes the balance between torque resistance and weight, achieving robustness without the full weight penalty of a solid cable.
2Weight of moving object
If the cable uses a hollow base wire design, then weight is reduced, but structural robustness may be compromised
Solution Approach 1:
The hollow base wire is segmented into an inner core and an outer wire wrapped in a helical pattern. This segmentation redistributes structural loads across multiple components, allowing the hollow construction to maintain adequate structural strength while significantly reducing weight compared to a solid wire of equivalent outer dimensions.
Solution Approach 2:
The outer wire is positioned at the outer perimeter of the cable cross-section where it experiences the highest tensile and torsional stresses. By concentrating material at this critical location and using a helical winding pattern, the design optimizes local quality to provide maximum strength where needed while keeping the overall weight low.
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 cable is lighter, allowing for easier transport and use while maintaining the necessary strength to handle torque, with a weight reduction of up to 50% compared to conventional cables, enhancing portability and usability.
Implementation Method 1
an outer wire concentrically surrounding the inner core, where the outer wire is helically wound in a first direction to form a plurality of consecutive coils
Implementation Method 2
heat treating the spring to temper the spring
Implementation Method 3
coating the spring with a layer of nickel alloy using an electroless process
Data Source
AI summary
A drain cleaning cable for use with a drain cleaner. The drain cleaning cable includes an inner core having a first end and a second end, and an outer wire concentrically surrounding the inner core, where the outer wire is helically wound in a first direction to form a plurality of consecutive coils, and where the outer wire has a first end and a second end. A first connector engages with the first end of the inner core and the first end of the outer wire, where the first connector is configured to attach the drain cleaning cable to a drain cleaning element. The second end of the inner core and the second end of the outer wire are received within the drain cleaner.