Ratchet Connector Coupling for Secure Locking and Easy Release

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Solution Overview

Problem

Existing connector devices face issues with inconvenient separation and easy uncoupling due to reliance on locking grooves or lack thereof, leading to potential accidental separation.

Innovation Solution

A ratchet gear mechanism comprising a toothed gear, ratchet gear, stopper, and spring, allowing for secure coupling and convenient separation by controlling the direction of rotation through the stopper's interaction with gear teeth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a locking groove and locking part are used to couple the first connector and the second connector, then the coupling strength is improved, but the ease of separation deteriorates

Engineering Contradiction:
Improvecoupling strengthVSAvoidease of separation
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The locking part is designed to transition between a locked position (engaging the locking groove) and an unlocked position (disengaged from the locking groove). This dynamic mechanism allows the connector to maintain strong coupling during normal use while enabling easy separation when needed by simply pressing the release button to shift the locking part to the unlocked position.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The release button serves as an intermediary element that controls the state of the locking part. By pressing the release button, the locking part is actuated to move between locked and unlocked positions, providing a user-friendly interface for controlling the coupling state without requiring direct manipulation of the locking groove or locking part themselves.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If no locking groove and locking part are used, then the ease of separation is improved, but the reliability of coupling deteriorates

Engineering Contradiction:
Improveease of separationVSAvoidcoupling reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connector automatically maintains its coupled state through the automatic engagement of the locking part with the locking groove upon insertion. The spring-loaded locking part self-actuates to engage the locking groove, ensuring reliable coupling without requiring additional locking actions from the user, while still allowing easy release through the release button.

Inventive Principle:
Principle #25Self-service

3Reliability

If the connector is designed for secure coupling, then the safety is improved, but the convenience of disconnection deteriorates

Engineering Contradiction:
ImprovesafetyVSAvoidconvenience of disconnection
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The release button acts as a mediator that provides mechanical advantage and controlled actuation of the locking part. By pressing the release button, the user can easily overcome the locking force without requiring excessive force or complex manipulation, thus maintaining safety during normal use while enabling convenient disconnection when needed.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enhances safety and convenience by ensuring connectors remain coupled unless intentionally separated, preventing accidental uncoupling and facilitating easy disconnection when needed.

Implementation Method 1

the stopper may continuously move from a groove to another groove between the gear teeth of the ratchet gear while being pulled in a direction toward the ratchet gear by the elastic force of the spring

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentEP4181325B1Connector device
Publication Date: 2026.03.18 LG ENERGY SOLUTION LTD
  • EP4181325B1 patent drawingFigure 1
  • EP4181325B1 patent drawingFigure 2
  • EP4181325B1 patent drawingFigure 3

AI summary

The present invention provides a connector device comprising: a first connector which is fastened to a substrate, and comprises a terminal body having an opening provided in one surface thereof and a terminal provided in the opening and electrically connected to the substrate; a second connector which is fastened to an electric wire, and comprises a socket body inserted into the opening of the terminal body and a socket provided inside the socket body and contacting the terminal; and a ratchet part by which the first connector and the second connector are coupled so as not to be separated or uncoupled so as to be separable. The ratchet part comprises a toothed gear, a ratchet gear, and a stopper.