Mini-Coaxial Connector Screw Mechanism Eliminates Soldering
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Solution Overview
Problem
Conventional mini-coaxial cable connectors require soldering and crimping, making the assembly process troublesome and seeking a solder-free and crimp-free connection method for stable and firm connection.
Innovation Solution
A mini-coaxial cable connector utilizing a screwing mechanism with a main body and adapter, featuring internal and external screw threads and wedge-shaped members to securely grip the outer sheath of the cable, ensuring a stable and firm connection without soldering or crimping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soldering and crimping are used to connect mini-coaxial cable to connector, then reliable electrical connection and firm mechanical connection are achieved, but the assembly process becomes troublesome and complex
Solution Approach 1:
The patent replaces the traditional soldering process with a mechanical screwing mechanism. The adapter is screwed into the connector body through threaded engagement, eliminating the need for soldering equipment and complex soldering operations while maintaining reliable electrical connection through the mechanical contact of conducting parts.
Solution Approach 2:
The patent extracts and eliminates the crimping step from the assembly process. Instead of using crimping tools to secure the cable, the design uses the screwing mechanism combined with the tapered outer wall surface to automatically secure the mini-coaxial cable in place, removing the need for separate crimping operations.
2Ease of operation
If soldering and crimping processes are eliminated, then assembly process becomes simpler and easier, but connection stability and pull strength may be compromised
Solution Approach 1:
The patent employs tapered (conical) surfaces instead of cylindrical surfaces for both the outer wall of the adapter and the corresponding inner surface of the connector body. This tapered geometry creates a self-locking effect during screwing, where the angled surfaces progressively engage and clamp the mini-coaxial cable, significantly enhancing pull strength and connection stability without requiring additional fastening steps.
Solution Approach 2:
The patent uses wedge-shaped members made of elastic or resilient material positioned between the adapter and the mini-coaxial cable. These elastic components deform under the screwing force to create friction grip and mechanical interlocking with the cable, providing both secure holding and protection against pull-out forces while maintaining the simplicity of the screwing assembly process.
3Ease of operation
If a screwing mechanism is introduced to eliminate soldering and crimping, then assembly process is simplified, but device complexity increases due to additional components
Solution Approach 1:
The patent combines multiple functions into the adapter component: it serves as both the electrical connector (with conducting parts for signal transmission) and the mechanical fastening element (with the tapered outer wall and screwing interface). The wedge-shaped members are integrated into the adapter structure to provide both cable positioning and securing functions, reducing the need for separate components and simplifying the overall assembly.
4Strength
If wedge-shaped members are added to grip the outer sheath, then firm connection and sufficient pull strength are achieved, but manufacturing complexity increases
Solution Approach 1:
The patent applies the wedge-shaped members only at specific critical locations where cable gripping is needed, rather than uniformly throughout the connector. The elastic or resilient material of these wedges provides localized deformation and friction grip exactly where the cable contacts the adapter, achieving strong mechanical engagement without requiring complex manufacturing processes for the entire connector structure.
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 screwing mechanism provides sufficient pull strength and a reliable electrical connection, eliminating the need for soldering and crimping, making the assembly process easier and more stable.
Implementation Method 1
the wedge-shaped members are subjected to forces radially applied thereto by the main body and inwardly deformed to tightly press against and grip the outer sheath of the mini-coaxial cable
Implementation Method 2
the forward tapered outer wall surface of the first tubular section of the adapter drives a part of the braided sheath of the mini-coaxial cable against the forward tapered inner wall surface of the main body
Data Source
AI summary
A mini-coaxial cable includes a main body being provided with a forward tapered inner wall surface and a plurality of internal screw threads; and an adapter for coaxially receiving a mini-coaxial cable therein and including a first forward tapered tubular section, a plurality of external screw threads meshing with the internal screw threads of the main body, and at least one pair of wedge-shaped members located adjacent to the outer sheath of the mini-coaxial cable. When the adapter is fully screwed into the main body, the wedge-shaped members are subjected to radially applied forces and inward deformed to tightly press against and grip the outer sheath of the mini-coaxial cable, and the first tapered tubular section drives the braided sheath of the mini-coaxial cable against the tapered inner wall surface of the main body, giving the mini-coaxial cable sufficient pull strength.