Endoscope Cable Connection Structure Positioning
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Solution Overview
Problem
Existing cable connection structures for endoscopes face challenges in accurately positioning multiple coaxial cables to a circuit board, leading to reduced connection strength and reliability, especially when trying to minimize the diameter and length of the insertion tool for easier patient introduction.
Innovation Solution
A cable connection structure featuring a circuit board with a first main body portion and a second main body portion, where the second portion has a shield set portion with a bottom and wall portions, and coaxial cables are processed to expose core wires and shields in a stepwise manner for connection to specific electrodes, ensuring accurate alignment and collective connection of shields and core wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple coaxial cables are connected to a circuit board using conventional methods, then the connection structure can be implemented, but positioning accuracy of the cables deteriorates and connection reliability is reduced
Solution Approach 1:
The patent applies preliminary action by providing positioning protrusions on the coaxial cables before connection, which fit into corresponding positioning recesses on the circuit board. This pre-positioning mechanism ensures accurate alignment of multiple cables before the actual connection process, preventing positioning errors and improving connection reliability.
Solution Approach 2:
The patent introduces positioning protrusions and recesses as intermediary elements that mediate between the coaxial cables and the circuit board. These intermediaries facilitate precise positioning by providing mechanical guidance and alignment features, ensuring that multiple thin cables can be accurately positioned without requiring high operator skill.
2Ease of operation
If the diameter of the insertion tool is reduced for easier patient introduction, then ease of operation is improved, but the complexity of cable connection and positioning increases
Solution Approach 1:
The positioning protrusions and recesses are designed in advance to guide the cables into correct positions automatically. This preliminary positioning mechanism simplifies the connection process despite the reduced tool diameter, as the mechanical guides compensate for the limited space and reduce the need for complex manual positioning procedures.
Solution Approach 2:
The coaxial cables with positioning protrusions essentially position themselves by fitting into the corresponding recesses on the circuit board. This self-positioning mechanism reduces the need for complex external positioning tools or highly skilled operators, making the connection process easier even within a compact insertion tool.
3Productivity
If coaxial cables are held by a tool for positioning, then connection can be performed, but the skill level of the operator must be high and connection time increases
Solution Approach 1:
The positioning protrusions on the coaxial cables enable the cables to self-position by fitting into the recesses on the circuit board. This eliminates the need for complex tool-based positioning methods and reduces dependence on operator skill, allowing for faster and more consistent connection operations.
Solution Approach 2:
The positioning protrusions and recesses act as intermediary elements that facilitate accurate cable positioning without requiring complex tools or high operator skill. These mechanical guides provide intuitive alignment feedback, enabling operators to achieve precise connections quickly and consistently.
Data Source
AI summary
A disclosed cable connection structure includes a circuit board that includes a first main body portion and a second main portion that includes a shield set portion, a shield connection electrode, and a plurality of core wire connection electrodes; and a plurality of coaxial cables each of which is processed such that a core wire, an internal insulator, and a shield are exposed from a tip portion in a stepwise manner, where the core wires are connected to the respective core wire connection electrodes and the shields are collectively connected to the shield connection electrode. The second main body portion and the coaxial cables are positioned within a projection plane of a front surface that is perpendicular to a principal surface of the first main body portion.