Connector Fitting Detection via Nested Engaging Part

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional connectors face issues with accurate fitting state detection due to external forces affecting the locking part of the fitting detection member, leading to unstable detection of the fitting state between the first and second housings.

Innovation Solution

The connector design incorporates an engaging part on the fitting detection member that is accommodated within the first fitting part, preventing external interference and ensuring stable detection by engaging with an engaged part on the second fitting part, which is also accommodated inside the first fitting part, allowing for reliable movement between temporary and primary locking positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the fitting detection member is positioned on the outer circumference of the second housing, then it can detect the fitting state between the first and second housings, but the locking part is easily subjected to external forces due to interference with peripheral members, causing unstable detection

Engineering Contradiction:
Improvefitting state detection accuracyVSAvoiddetection stability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The locking part is nested inside the first fitting part rather than being exposed on the outer circumference. The engaging part of the fitting detection member is received within the first fitting part, protecting it from external forces while still allowing it to engage with the engaged part on the second fitting part for reliable detection of the fitting state.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of operation

If the engaging part is exposed on the outer circumference, then the fitting detection member can be easily assembled, but the engaging part is subjected to external forces that may change the primary locking position, preventing accurate detection

Engineering Contradiction:
Improveassembly easeVSAvoidfitting state detection accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The engaging part is nested within the first fitting part, which provides protection from external forces. The second fitting part is also accommodated within the first fitting part, creating a nested arrangement that protects the engaging part while maintaining the detection function.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS9923297B2Connector
Publication Date: 2018.03.20 YAZAKI CORP
  • US9923297B2 patent drawing
  • US9923297B2 patent drawing
  • US9923297B2 patent drawing

AI summary

A connector includes a first housing having a first fitting part, a second housing having a second fitting part configured so as to be fittable to the first fitting part, a fitting detection member assembled to an outer circumference of the second housing so as to be movable between a temporary locking position and a primary locking position, an engaged part provided on the second fitting part, and an engaging part which is provided on the fitting detection member so as to be abuttable on the first fitting part and also engaged to the engaged part to hold the fitting detection member at the temporary locking position and the primary locking position to the second housing. The second fitting part and the engaging part are accommodated in the first fitting part.