Conduction Inspection Jig Pin Guard Plate Alignment

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Solution Overview

Problem

Conventional conduction inspection jigs fail to reliably inspect conduction pins due to pin guard plate inclination, leading to erroneous inspections and potential connector damage from bent conduction pins protruding from the pin guard plate.

Innovation Solution

A conduction inspection jig with a tubular main body, a movable pin guard plate, and conduction pin holes in the pin guard plate, where the conduction pin is positioned outside the hole initially, allowing only straight pins to enter and contact the terminal, preventing bent pins from causing damage during inspection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the tip end of the conduction pin enters into the conduction pin hole formed in the pin guard plate, then the conduction inspection can be performed, but it becomes impossible to detect the presence or absence of bending of the conduction pin before inspection

Engineering Contradiction:

Improveconduction inspection reliabilityVSAvoidconduction pin bending detection difficulty

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent positions the tip end of the conduction pin outside the conduction pin hole before inspection begins. This preliminary positioning allows visual or measurement detection of pin bending before the inspection process starts, enabling operators to identify and replace bent pins prior to conducting the actual conduction test, thus preventing erroneous inspections

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If the pin guard plate is pressed against the connector with inclination, then the inspection structure is simple, but reliable conduction inspection cannot be performed

Engineering Contradiction:

Improveinspection structure complexityVSAvoidconduction inspection reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent introduces a preliminary positioning step where the pin guard plate is positioned against the connector body before the connector is fully inserted. This preliminary action ensures proper alignment and prevents inclination during the inspection process, maintaining inspection reliability without significantly complicating the overall structure

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The pin guard plate acts as an intermediary element between the connector and the conduction pin. By positioning this plate first and using it as a reference surface, the system ensures proper alignment of subsequent components, preventing inclination and ensuring reliable inspection while maintaining structural simplicity

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the tip end of the conduction pin protrudes from the conduction pin hole in a bent state, then the conduction inspection may proceed, but damage to the connector may occur

Engineering Contradiction:

Improveinspection efficiencyVSAvoidconnector damage risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a preliminary check step where the tip end of the conduction pin is positioned outside the conduction pin hole before inspection. This allows operators to visually inspect the pin for bending and replace defective pins before they can cause damage to the connector during the inspection process, thus preventing harmful effects while maintaining productivity

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies preliminary anti-action by positioning the conduction pin tip outside the hole and providing an opportunity for inspection and replacement before the pin enters the hole and contacts the terminal. This preventive measure counteracts the potential harmful effect of bent pins causing connector damage by eliminating the risk before it can materialize

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS10877106B2Conduction inspection jig and inspection method of conduction pin

Publication Date: 2020.12.29 YAZAKI CORP

AI summary

In a jig main body constructing a conduction inspection jig, a pin guard plate is arranged so as to be movable back and forth between the main body bottom portion and the main body guide portion. Before conduction inspection, the tip end of a conduction pin is positioned outside the conduction pin hole. When the pin guard plate moves towards a side of the main body bottom portion with a start of the conduction inspection, only the tip end of the normal conduction pin without bent enters into the conduction pin hole and penetrates, and thereby protrudes from the conduction pin hole. An inspection method of a conduction pin includes an arranging step of arranging the tip end outside the conduction pin hole, a moving step of moving the pin guard plate, and a detecting step of detecting whether or not the tip end enters into the conduction pin hole.