Groove Terminal Structure for Multi-Point Contact Stability
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Solution Overview
Problem
Existing terminal structures for portable devices, such as cradles, face issues with unstable conductivity due to one-point or line contact between contact pins and terminals, leading to unreliable connection performance and contamination removal challenges.
Innovation Solution
The introduction of a groove or protruding section in the contact target area allows the contact pin to slide along its edges or surface, achieving multi-point contact and enhancing stability, with a manufacturing method involving molds and resin injection to create the terminal structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a contact protruding section slides with one-point or line contact with the contact target section, then the structure is simple, but the conductivity becomes unstable and connection reliability deteriorates
Solution Approach 1:
The contact target section is transformed from a flat surface to a groove-shaped structure, adding a dimensional feature that enables the contact pin tip to make contact at multiple points (both edges of the groove) simultaneously, thereby improving connection reliability while maintaining structural simplicity
2Ease of manufacture
If a contact protruding section slides with one-point or line contact with the contact target section, then the manufacturing process is simple, but contamination removal becomes difficult and conductivity stability deteriorates
Solution Approach 1:
By forming a groove in the contact target section, the contact interface is enhanced to provide multiple contact points for the contact pin tip, which stabilizes conductivity without complicating the manufacturing process since the groove can be formed using standard molding or machining techniques
3Area of moving object
If the contact pin tip makes one-point or line contact with the contact target section, then the contact area is small, but the conductivity becomes unstable and connection performance reliability deteriorates
Solution Approach 1:
The groove structure in the contact target section allows the contact pin tip to contact both edges of the groove simultaneously, effectively increasing the contact area from one-point or line contact to multi-point contact, thereby stabilizing conductivity and improving connection performance reliability
Data Source
AI summary
A terminal structure in which a groove extending in a predetermined direction is provided in a contact target section with which a tip portion of a contact pin comes in contact, and the tip portion slides on an edge of the groove along the groove by a pressing force occurred when the tip portion is butted against the contact target section so as to come in contact with the contact target section.