Coaxial Connector Plug Outer Conductor Segmentation

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Solution Overview

Problem

Coaxial connector plugs with reduced outer conductor height suffer from decreased rigidity, leading to inadequate contact with the receptacle and increased likelihood of separation.

Innovation Solution

A coaxial connector plug design featuring a ring-shaped outer conductor with a cutting portion and strategically positioned outer terminals that enhance contact strength by reducing elastic deformation and increasing fixation points.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the height of the outer conductor is reduced to make the coaxial connector plug more compact, then the size of the connector is reduced, but the rigidity of the outer conductor decreases

Engineering Contradiction:
Improvesize of coaxial connector plugVSAvoidrigidity of outer conductor
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The outer conductor is divided into multiple pressing portions along its height, with each portion capable of independent elastic deformation. This segmentation allows the outer conductor to achieve sufficient contact pressure at each pressing location while maintaining overall structural rigidity, resolving the contradiction between compact size and rigidity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The outer conductor is designed with non-uniform thickness, having a first thickness at the pressing portions and a second thickness at other portions. This local quality variation enables the pressing portions to deform elastically for strong contact while other portions maintain greater rigidity, allowing compact overall dimensions without sacrificing necessary local strength.

Inventive Principle:
Principle #3Local quality

2Volume of moving object

If the height of the outer conductor is reduced to make the coaxial connector plug more compact, then the size of the connector is reduced, but the contact strength with the receptacle becomes insufficient

Engineering Contradiction:
Improvesize of coaxial connector plugVSAvoidcontact strength with receptacle
Core Design Contradiction:
Volume of moving objectVSForce

Solution Approach 1:

The outer conductor is divided into multiple pressing portions that can independently deform elastically upon insertion into the receptacle. This segmentation distributes the contact force across multiple locations, ensuring sufficient contact strength at each pressing portion even when the overall height is reduced, thereby maintaining strong contact with the receptacle in a compact design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

By varying the thickness of the outer conductor locally at pressing portions versus other areas, the design concentrates elastic deformation capability where contact force is needed while maintaining structural integrity elsewhere. This enables compact dimensions without compromising contact strength.

Inventive Principle:
Principle #3Local quality

3Reliability

If the outer conductor is made more rigid to prevent separation from the receptacle, then the connection reliability improves, but the height of the connector must be increased

Engineering Contradiction:
Improveconnection reliabilityVSAvoidheight of outer conductor
Core Design Contradiction:
ReliabilityVSLength of moving object

Solution Approach 1:

The outer conductor is segmented into multiple pressing portions with different thicknesses, allowing each portion to contribute to connection reliability through controlled elastic deformation. This segmentation enables high connection reliability without requiring increased overall height, as each pressing portion independently ensures secure contact with the receptacle.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The non-uniform thickness distribution creates local quality differences that optimize both rigidity and elasticity where needed. Thinner pressing portions provide elastic compliance for reliable contact, while thicker portions maintain structural rigidity, achieving high connection reliability in a compact height.

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

The design reduces the probability of the coaxial connector plug separating from the receptacle by maintaining strong contact and allowing for a more compact size while maintaining structural integrity.

Implementation Method 1

elastic deformation occurs in the outer conductor 512a in such a manner that a cutting portion that has been formed in the outer conductor 512a is slightly widened, and the outer conductor 512a is pressed into contact with the outer peripheral surface of the outer conductor of the coaxial connector receptacle

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS9343854B2Coaxial connector plug
Publication Date: 2016.05.17 MURATA MFG CO LTD
  • US9343854B2 patent drawing
  • US9343854B2 patent drawing
  • US9343854B2 patent drawing

AI summary

A coaxial connector plug includes a first outer conductive unit that includes a first outer conductor that has a substantially ring-like shape in a portion of which a cutting portion is formed when viewed in plan and first and second outer terminals that are drawn out downwardly from the first outer conductor and a first central conductive unit that includes a first central conductor disposed in an area surrounded by the first outer conductor when viewed in plan. The first and second outer terminals are disposed, when viewed in plan from above, further toward the side on which the cutting portion is formed than a second line with the cutting portion interposed between the first and second outer terminals, the second line being perpendicular to a first line, which connects the center of the first outer conductor and the cutting portion, and passing through the center.