Connector Terminal Extraction Guide Portion
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Solution Overview
Problem
Existing connectors face issues with terminal extraction, where the use of jigs can cause surface scraping, leading to conduction failures and decreased waterproof performance due to generated shavings during terminal detachment.
Innovation Solution
A connector design featuring an elastically deformable locking lance with a jig hooking portion and a guide portion in the side retainer to facilitate smooth terminal extraction without interference, using a jig that contacts the guide portion to release the locking lance and allow for easy removal of the terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a jig is used to extract the terminal from the terminal accommodating chamber, then the terminal can be easily detached, but contact between the terminal and the jig may scrape the terminal surface, generating shavings that cause conduction failure or decrease waterproof performance
Solution Approach 1:
The patent introduces a guide portion as an intermediary structure that mediates between the jig and the terminal. The guide portion guides the jig during insertion, ensuring the jig contacts only the locking lance and not the terminal itself. This intermediary mechanism enables easy terminal extraction while preventing surface scraping and shaving generation that would compromise conduction and waterproof performance.
Solution Approach 2:
The patent extracts the harmful contact function from the jig-terminal interaction by designing the jig to contact only the locking lance through the guide portion's constraint. The harmful aspect (jig-terminal contact causing shavings) is completely removed while preserving the useful aspect (jig-operated terminal extraction).
2Device complexity
If the jig is inserted directly into the terminal accommodating chamber without guidance, then insertion is simple, but the jig may interfere with the terminal during extraction
Solution Approach 1:
The guide portion serves as an intermediary structure that simplifies the overall device while enabling precise jig guidance. This single added component provides both guidance and constraint functions, preventing jig-terminal interference during extraction without significantly increasing device complexity.
Solution Approach 2:
The guide portion performs multiple functions simultaneously: it guides the jig during insertion, constrains the jig's movement path, and prevents the jig from contacting the terminal during extraction. This multi-functional design achieves interference-free terminal extraction without adding complex separate mechanisms.
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
Prevents defects in terminals during extraction and enhances workability by ensuring the jig does not interfere with the terminal, maintaining conduction and waterproof performance.
Implementation Method 1
operating the jig such that the locking lance is elastically deformed to release locking between the terminal and the locking lance
Data Source
AI summary
The present disclosure relates to a connector and a terminal extracting method in a connector. The connector includes a terminal, a housing having a terminal accommodating chamber in which the terminal is accommodated, and a side retainer attached to the housing. The terminal accommodating chamber is provided with an elastically deformable locking lance such that the locking lance is to be locked to the terminal. A distal end portion of the locking lance is provided with a jig hooking portion to come into contact with a jig inserted into the terminal accommodating chamber when releasing locking with the terminal. The side retainer is provided with a guide portion guiding the jig such that the jig comes into contact with the jig hooking portion and does not interfere with the terminal when being inserted into the terminal accommodating chamber.