Cable Connection Board Groove Structure for Narrow Pitch Alignment
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Solution Overview
Problem
Conventional cable connection techniques for medical endoscopes restrict layout flexibility and miniaturization due to alignment pitch limitations and misalignment issues, especially when connecting core wires at pitches narrower than the cable's outer diameter, and struggle with preventing signal interference.
Innovation Solution
The proposed cable connection structure features a board with protruding parts forming grooves for the conducting bodies, where the extending direction of the conducting body is not aligned with the cable, allowing for a narrower alignment pitch and improved layout flexibility, and includes high-melting-point solder bumps for secure connections, which can be heated to fuse with the connecting electrode, preventing misalignment and connection failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cables are connected at alignment pitch aligned by outer covering parts, then misalignment of signal wires is prevented, but the pitch cannot be made smaller than the outermost diameter of the cable
Solution Approach 1:
The connection structure is divided into separate functional elements: the cable assembly with outer covering, the board with groove part, and the connecting electrode. This segmentation allows the alignment function to be provided by the groove structure rather than requiring tight pitch between cable outer coverings, enabling smaller layout area while maintaining alignment precision.
Solution Approach 2:
The groove part formed by protruding parts acts as an intermediary structure between the cable and the connecting electrode. This groove receives and positions the conducting body, providing alignment without requiring the cable outer coverings to be precisely spaced, thus reducing the minimum pitch requirement while maintaining manufacturing precision.
2Ease of manufacture
If the extending direction of the conducting body is aligned with the cable, then connection is simplified, but layout flexibility is restricted
Solution Approach 1:
The groove part is formed by protruding parts that extend in a direction different from the cable extending direction, creating a dimensional offset. This allows the conducting body to be positioned at non-aligned pitches relative to the cable, providing layout flexibility while the groove structure maintains connection simplicity by guiding the conducting body into proper position.
3Reliability
If high-melting-point solder bumps are used for connection, then connection reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The solder bump material parameter is changed to high-melting-point material, which improves connection reliability by providing stronger thermal and mechanical bonds. While this changes the manufacturing parameters (requiring higher temperature soldering processes), the groove part structure compensates by providing mechanical guidance that simplifies positioning, partially offsetting the increased manufacturing complexity.
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 solution enables stable connection of multiple cables in a small area, suitable for endoscope configurations, by allowing non-aligned connections and reducing signal interference, thus enhancing the compactness and reliability of medical imaging systems.
Implementation Method 1
the protruding parts include a fixed protruding part which does not fuse in soldering the conducting body onto the connecting electrode
Implementation Method 2
heated to fuse with the connecting electrode
Data Source
AI summary
A cable connection structure according to the present invention includes a board and a cable to be connected to the board via a connecting electrode, the board includes at least two protruding parts constituting a groove part in which a conducting body of the cable is arranged on the connecting electrode, the protruding parts include a fixed protruding part which does not fuse in soldering the conducting body onto the connecting electrode, and an extending direction of the conducting body arranged in the groove part is not aligned with an extending direction of the cable.