Endoscope Cable Wire Composition for Durability and Pliability
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Solution Overview
Problem
The endoscope cable faces a challenge in achieving both durability and ease of connection work, as the existing structure compromises on pliability to secure durability, making connection processes inefficient.
Innovation Solution
The endoscope cable is designed with a metal wire group configuration that combines different types of metal wires for the entire shield portion and cable core wires, providing an electric shield function and improved pliability, allowing for both durability and efficient connection work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a highly rigid wire material (copper alloy) is used for the conductor to secure durability, then tensile resistance strength, cyclic bending strength, and cyclic torsional strength are improved, but pliability deteriorates making connection work inefficient
Solution Approach 1:
The patent applies composite materials by combining copper alloy wires (for durability) and soft copper wires (for pliability) within the same conductor structure. Specifically, the core wire includes both copper alloy wires and soft copper wires, while the shield wire includes both copper alloy wires and soft copper wires. This composite structure allows the cable to achieve both high durability and good pliability simultaneously, resolving the contradiction between these two properties.
2Reliability
If the wire diameter of external conductive wire (shield portion) is made different from internal conductive wire (core wire) to secure durability, then tensile resistance strength and cyclic bending strength are improved, but connection work becomes more difficult
Solution Approach 1:
The patent applies local quality by making the soft copper wire content ratio different between the core wire and shield wire portions. The core wire has a soft copper wire content ratio of 10-50%, while the shield wire has a soft copper wire content ratio of 50-90%. This localized variation in material composition allows each portion to have optimized properties: the core wire balances durability and pliability, while the shield wire provides enhanced pliability for easier connection work, thus resolving the contradiction between durability and connection efficiency.
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
This configuration enhances the endoscope cable's durability through stress tests like torsion, curve, and kink resistance while facilitating easier connection work by balancing the repulsive forces of various metal wires, ensuring reliable operation.
Implementation Method 1
an entire shield portion (160) including a metal wire group having an electric shield function to surround entirety of the plurality of individual cables
Data Source
AI summary
An endoscope cable includes a plurality of individual cables, and is provided with an entire shield portion including a metal wire group having an electric shield function to surround entirety of the plurality of individual cables, and a cable core wire including a metal wire group in each of the individual cables. The metal wire group in at least one of the entire shield portion and the cable core wires is configured by combining a plurality of types of metal wires having different compositions from each other.