Solder-Free Adapter for Mini-Coaxial Cable Center Conductor

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing methods for connecting mini-coaxial cables to standard coaxial cable connectors are cumbersome and require soldering, which is not practical for all applications, especially in situations where a solder-free and stable connection is needed.

Innovation Solution

A solder-free adapter system that includes a cylindrical member and an electrically conductive insertion member with segments that grip the bare center conductor of the mini-coaxial cable, allowing it to be securely inserted into a standard coaxial cable connector without the need for soldering, providing rigid support and reliable electrical contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If soldering is used to connect the insertion pin to the center conductor, then reliable electrical connection is achieved, but the connection process becomes complex and requires special equipment and environment

Engineering Contradiction:

Improveelectrical connection reliabilityVSAvoidconnection process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the soldering process (thermal/chemical connection method) with a mechanical compression connection system. The insertion member with compression segments mechanically grips the center conductor through radial compression forces, eliminating the need for soldering equipment, electric power, and controlled environments while achieving reliable electrical connection.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The adapter serves as an intermediary component between the mini-coaxial cable and the standard coaxial connector. It provides a mechanical interface that converts the small center conductor into a form suitable for standard connector acceptance, enabling connection without direct soldering to the connector itself.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If soldering is required for connection, then stable electrical contact is achieved, but the working environment requirements and equipment needs increase

Engineering Contradiction:

Improveelectrical contact stabilityVSAvoidmanufacturing ease

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The compression connection mechanism replaces soldering with a purely mechanical assembly process. The insertion member is simply inserted into the adapter body, and the compression segments automatically grip the center conductor through elastic deformation, eliminating soldering equipment, electric power requirements, and clean environment constraints.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If a standard coaxial connector is used directly with mini-coaxial cable, then connector compatibility is achieved, but the center conductor lacks sufficient support and grip

Engineering Contradiction:

Improveconnector compatibilityVSAvoidcenter conductor support strength

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The insertion member is divided into multiple compression segments that can independently deform and apply radial compression force to the center conductor. This segmentation allows the structure to adapt to the small diameter of mini-coaxial center conductors while providing sufficient gripping strength through distributed contact points.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adapter provides localized structural support and compression forces specifically at the center conductor interface, while maintaining compatibility with standard connector interfaces. The cylindrical member and insertion member are designed with specific local geometries (tapered surfaces, compression segments) that provide the necessary grip strength where needed without affecting overall connector compatibility.

Inventive Principle:

Principle #3Local quality

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

Enables easy, stable, and secure connection of mini-coaxial cables to standard coaxial connectors without soldering, ensuring reliable signal transmission and sufficient pull strength while maintaining electrical integrity.

Implementation Method 1

the segments are compressed by radially applied forces to tightly grip the bare center conductor

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS7476127B1Adapter for mini-coaxial cable

Publication Date: 2009.01.13 EZCONN

AI summary

An adapter for mini-coaxial cable includes a cylindrical member for receiving a length of exposed insulating spacer of a mini-coaxial cable therein, and an electrically conductive insertion member for receiving a bare center conductor of the mini-coaxial cable therein so as to provide sufficient rigid support to the thin center conductor. When the adapter is inserted into a standard coaxial cable connector, the insertion member is radially compressed by the connector to thereby tightly grip the bare center conductor.