Quick Demountable RF Coaxial Connector with Necking Conical Central Conductor
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Solution Overview
Problem
Traditional radio-frequency coaxial connectors suffer from instability in dynamic intermodulation due to inadequate clamping forces on both the outer and inner conductors, leading to poor performance and lengthy, error-prone installation processes, especially for novice operators.
Innovation Solution
A quick demountable high-reliability radio-frequency coaxial connector design featuring a front shell and rear protective jacket with a necking conical central conductor, a cable clamp assembly with interference fits, and a sharp corner clamping structure that securely grips the cable conductors, allowing for rapid and secure connection without threading, enhancing mechanical stability and ease of installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a threaded-connection structure is adopted for easy disassembly, then ease of operation is improved, but installation time increases significantly and installation complexity increases
Solution Approach 1:
The connector is divided into a front shell and a rear protective jacket that can be quickly assembled and disassembled as separate units, eliminating the need for threading while maintaining ease of operation
Solution Approach 2:
The cable clamp assembly and central conductor are pre-positioned within the front shell during manufacturing, so that during installation only the front shell and rear protective jacket need to be quickly connected, dramatically reducing installation time
2Ease of manufacture
If the cable outer conductor is partially clamped to reduce manufacturing complexity, then ease of manufacture is improved, but dynamic intermodulation stability deteriorates
Solution Approach 1:
The cable clamp assembly features a non-uniform clamping structure with different clamping forces applied at different locations: stronger clamping at the clamping inner concave ring groove where dynamic intermodulation occurs, and lighter clamping elsewhere, thus improving stability without excessive manufacturing complexity
Solution Approach 2:
The clamping mechanism is enhanced by adding the backward sharp corner structure in the clamping inner concave ring groove, which provides an additional dimensional constraint that prevents cable outer conductor movement and stabilizes dynamic intermodulation
3Device complexity
If the cable inner conductor is insufficiently clamped to simplify structure, then device complexity is reduced, but dynamic intermodulation stability deteriorates
Solution Approach 1:
The central conductor features a necking conical structure with varying diameter that provides localized enhanced clamping: the smaller outer diameter section provides stronger constraint on the cable inner conductor where it is needed for dynamic intermodulation stability, while the larger inner diameter section maintains structural simplicity
4Reliability
If traditional installation procedures are followed to ensure proper installation, then installation reliability is improved, but productivity decreases
Solution Approach 1:
The connector incorporates self-aligning and self-clamping features: the front protrusion automatically aligns with the first locating hole, and the cable clamp assembly with its sharp corner structure automatically clamps the cable outer conductor, eliminating the need for complex installation procedures while ensuring high installation reliability
Solution Approach 2:
The first locating hole and front protrusion are pre-positioned during manufacturing to provide automatic alignment during installation, and the cable clamp assembly is pre-configured with the backward sharp corner structure to provide automatic clamping, dramatically improving installation speed without sacrificing reliability
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 connector achieves improved stability and reduced installation time, with increased tensile strength and waterproof performance, addressing the issues of dynamic intermodulation and installation complexity, while maintaining high reliability and competitiveness.
Implementation Method 1
a rear outer ring surface of the front shell and a front inner ring surface of the rear protective jacket are located and connected by an interference fit
Implementation Method 2
a front end clamping surface formed by the cable clamp assembly is used for clamping an outer ring surface of an outer conductor of a to-be-connected cable
Implementation Method 3
the axial tail of the central conductor is specifically a necking conical structure, the inner diameter of the outer end of the necking conical structure is smaller than that of an inner conductor of a cable, meanwhile, the inner diameter of the inner end of the necking conical structure is larger than that of the inner conductor of the cable
Data Source
AI summary
A quick demountable high-reliability radio-frequency coaxial connector including a front shell and a rear protective jacket, a cavity of the front shell is internally provided with a front insulator and a central conductor, a first locating hole of a central axial position of the front insulator, the center of the front end of the central conductor is provided with a front protrusion, the front protrusion is arranged towards the first locating hole, a penetration hole is formed in a central part of the axial tail of the central conductor, the axial tail is a necking conical structure, the inner diameter of the outer end of the necking conical structure is smaller than that of an inner conductor of a cable, and meanwhile, the inner diameter of the inner end of the necking conical structure is larger than that of the inner conductor of the cable.