Coaxial Plug Connector Latching Structure for Stable Signal Transfer
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Solution Overview
Problem
Existing micro-miniature coaxial connectors experience instantaneous power or signal interruptions due to gaps between the C-shaped latching ring and conductive body, leading to instability and elastic fatigue, limiting their application in environments requiring continuous current transfer, such as sound source equipment or automotive rearview mirror fatigue detection.
Innovation Solution
An electrical connection device with a plug connector design featuring a conductive body, outer conductor, and insulative body, where the outer conductor has a rear end, front latching portions, and elastic pieces with stopping surfaces, eliminating gaps between components and enhancing elasticity to prevent deformation during repeated insertions and withdrawals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a C-shaped latching ring is used to latch the connector, then the connector can be easily assembled and disassembled, but gaps between the latching ring and conductive body cause instantaneous interruption of power or signal
Solution Approach 1:
The latching ring and conductive body are merged into a single integrated structure, eliminating the gap between them. The latching portions are formed as integral parts of the conductive body, ensuring continuous electrical contact while maintaining the latching function.
Solution Approach 2:
The conductive body is segmented to include multiple latching portions that can independently engage with the mating connector. This segmentation allows the latching function to be distributed across multiple contact points, improving reliability while maintaining ease of operation.
2Volume of moving object
If the C-shaped latching ring is made short for compact design, then the connector size is reduced, but elasticity is insufficient causing elastic fatigue during repeated insertions and withdrawals
Solution Approach 1:
The connector uses composite material construction with the outer conductor and conductive body made from materials optimized for both compactness and elastic durability. The material composition provides sufficient elasticity for repeated operations while maintaining a compact form factor.
Solution Approach 2:
The latching structure incorporates dynamic elements that allow the latching portions to flex and adapt during insertion and withdrawal. The elastic pieces are designed with optimal geometry to provide necessary compliance without requiring excessive length, reducing elastic fatigue while maintaining compact size.
3Reliability
If a new mating connector is redesigned to match the modified plug connector, then the latching structure can be moved to the front end, but manufacturing cost increases
Solution Approach 1:
The plug connector design maintains compatibility with existing MMCX specification mating connectors. The latching portions are configured to engage with standard MMCX receptacles, allowing the improved latching performance to be achieved without requiring redesigned mating connectors, thus avoiding increased manufacturing costs.
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
The solution ensures stable transfer of current or signals by eliminating gaps between the outer conductor and conductive body, preventing instantaneous interruptions and allowing the connector to function reliably in demanding applications without requiring modifications to existing mating connectors, thus reducing manufacturing costs.
Implementation Method 1
the elastic piece is positioned between the rear end and the front latching portion and connects the front latching portion
Data Source
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AI summary
An electrical connection device includes a plug connector. The plug connector includes a conductive body, an outer conductor, an insulative body and a central terminal. The outer conductor has a rear end, a front latching portion and an elastic piece. The rear end electrically connects the conductive body, the front latching portion is opposite to the rear end and is positioned in front of the rear end, the elastic piece is positioned between the rear end and the front latching portion and connects the front latching portion. At least one of the conductive body and the outer conductor is formed with a stopping surface, a position of the stopping surface correspond to the elastic piece of the outer conductor and is close to the front latching portion. The insulative body is provided in the conductive body. The central terminal is provided in the insulative body. Therefore, stability of transferring of a current or a signal can be assured, so as to avoid instantaneous interruption of power or interruption of signal occurring.