Plug-Receptacle Connector Alignment Structure for Contact Reliability

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Solution Overview

Problem

Existing connectors face issues with low contact reliability due to the springiness and toughness of plug and receptacle terminals, which can lead to interference and breakage when mating positions are misaligned.

Innovation Solution

A connector design featuring a plug and receptacle with specific regions and projections/grooves that align and connect, along with differing elasticity between plug and receptacle terminals, enhancing contact reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If plug terminals and receptacle terminals have springiness to ensure contact flexibility, then contact adaptability is improved, but strength and toughness are reduced making them susceptible to breakage when misaligned

Engineering Contradiction:
Improvecontact adaptabilityVSAvoidterminal strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The plug surface is divided into multiple regions (first plug region, second plug region, third plug region) separated by projecting parts, and the receptacle surface is divided into corresponding regions by grooves. This segmentation allows different regions to have specialized functions: some terminals maintain springiness for adaptability while others provide structural support for strength, resolving the contradiction between contact flexibility and terminal durability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connector employs a composite structure combining rigid projecting parts and grooves with flexible plug and receptacle terminals. The rigid elements (projecting parts, grooves, and main bodies) provide structural strength and alignment, while the flexible terminals maintain springiness for reliable contact, creating a composite system that achieves both strength and adaptability simultaneously

Inventive Principle:
Principle #40Composite materials

2Reliability

If plug terminals and receptacle terminals project from the surface to ensure contact, then contact reliability is improved, but toughness is reduced making them vulnerable to interference and breakage from misalignment

Engineering Contradiction:
Improvecontact reliabilityVSAvoidterminal toughness
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The projecting parts on the plug surface and grooves on the receptacle surface are designed to engage first during the mating process. This preliminary action establishes proper alignment and positional guidance before the plug terminals and receptacle terminals make contact, preventing misalignment-induced breakage while maintaining reliable terminal contact

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The projecting parts and grooves act as intermediary elements between the plug main body and receptacle main body. These intermediaries provide alignment guidance and mechanical interlocking, protecting the vulnerable plug and receptacle terminals from direct interference and breakage caused by misalignment while ensuring reliable terminal-to-terminal contact

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12603451B2Connector having plug and receptacle
Publication Date: 2026.04.14 JAPAN AVIATION ELECTRONICS IND LTD
  • US12603451B2 patent drawing
  • US12603451B2 patent drawing
  • US12603451B2 patent drawing

AI summary

Provided is a connector with enhanced contact reliability.A connector includes a plug and a receptacle connected to the plug. The plug includes a plug main body having a plug surface including a first plug region, a second plug region, and a third plug region, a plurality of projecting parts including a first projecting part and a second projecting part projecting from the plug surface, and a plurality of plug terminals projecting lower than the projecting parts from the plug surface. The receptacle includes a receptacle main body having a receptacle surface including a first receptacle region, a second receptacle region, and a third receptacle region, where a first groove and a second groove are formed on the receptacle surface, and a plurality of receptacle terminals.