Endoscope Cable Connection Structure for Narrow-Pitch Core Wire Alignment
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Solution Overview
Problem
Existing endoscope cable connection structures face challenges in accurately connecting multiple cables at narrow pitches, leading to potential misalignment and short circuits, particularly when subjected to stress or excessive force.
Innovation Solution
A cable connection structure utilizing a first and second fixing member, made of insulating resin, to securely hold exposed core wires at predetermined intervals, with a substrate featuring core wire and shield connection electrodes for precise electrical connection, allowing for accurate alignment and reduced short circuit occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cables are connected at narrow pitches to reduce space, then cable connection density is improved, but alignment accuracy deteriorates leading to misalignment and short circuits
Solution Approach 1:
The patent introduces a substrate as an intermediary component with pre-formed connection electrodes that serve as a reference framework. The substrate receives cables at predetermined intervals and provides alignment marks that guide the positioning of connection electrodes, enabling accurate cable-to-electrode alignment even at narrow pitches without requiring high precision in the cable positioning process itself.
2Ease of manufacture
If cable connection structure is simplified to reduce complexity, then ease of manufacture is improved, but connection reliability deteriorates under stress or excessive force
Solution Approach 1:
The substrate is prepared in advance with pre-formed connection electrodes and alignment marks before cable attachment. This preliminary preparation establishes a robust reference framework that ensures reliable alignment and connection during the actual cable attachment process, maintaining connection reliability even when subjected to stress or excessive force.
3Manufacturing precision
If alignment marks are formed on the substrate to improve cable alignment, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into the substrate: it serves as the mounting platform for connection electrodes, provides alignment marks for cable positioning, and acts as the structural base for the entire cable connection assembly. This merging of functions into a single component avoids the need for separate alignment fixtures or additional structural elements, thereby maintaining manufacturing simplicity while achieving high alignment precision.
Data Source
AI summary
A cable connection structure includes: cables, each including a jacket and a core wire exposed at an end portion by removing the jacket; a first fixing member configured to fix distal end portions of exposed core wires while holding the cables at predetermined intervals; a second fixing member configured to fix proximal end portions of the exposed core wires while holding the cables at predetermined intervals; and a substrate including a core wire connection electrode configured to electrically connect the core wire at a position between the first fixing member and the second fixing member, wherein the first fixing member and the second fixing member are different members.