Coaxial Connector Plug Profile Reduction via Insulator Extension

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Solution Overview

Problem

Existing coaxial connector plugs face challenges in reducing their profile while preventing displacement of the center conductor, particularly due to the presence of an insulating housing that increases the height and can cause downward displacement of the center conductor when a receptacle connector is mounted.

Innovation Solution

A coaxial connector plug design featuring a substantially tubular outer conductor, a tubular center conductor, and an insulator that fixes the center conductor, with a communication portion allowing the insulator to extend inside the center conductor, thereby reducing the profile and preventing displacement by firmly attaching the center conductor to the insulator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an insulating housing is added to fix the center conductor, then the center conductor displacement is suppressed, but the profile height increases

Engineering Contradiction:

Improvecenter conductor displacement suppressionVSAvoidprofile height

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent extracts the insulating housing from the structure and replaces it with a cranked portion of the center conductor itself. The center conductor is formed with a cranked section that extends into the insulator, allowing the insulator to contact and support the center conductor directly without requiring a separate insulating housing, thus reducing profile height while maintaining displacement suppression

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the center conductor and insulator structures by having the center conductor's cranked portion directly engage with the insulator. This integration eliminates the need for a separate insulating housing component, combining the functions of conductor support and insulation in a more compact arrangement that reduces overall profile height

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If the center conductor connection is cranked to allow insulator positioning, then downward displacement is suppressed, but the structure complexity increases

Engineering Contradiction:

Improvedownward displacement suppressionVSAvoidconnection structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the center conductor into distinct portions: a straight signal transmission section and a cranked support section. The cranked portion is specifically shaped to engage with the insulator, creating a simple yet effective displacement suppression mechanism that does not require complex multi-component assemblies

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9172194B2Coaxial connector plug

Publication Date: 2015.10.27 MURATA MFG CO LTD

AI summary

An outer conductor has a substantially cylindrical shape extending in an axial direction. A center conductor has a substantially cylindrical shape extending in the axial direction, and is provided inside the outer conductor. An insulator fixes the center conductor relative to the outer conductor. The center conductor is provided with a hole that communicates with the inside and the outside of the center conductor. The insulator extends, via the hole, to the inside of the center conductor from the outside.