Connector Retainer Dovetail Locking Mechanism

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Solution Overview

Problem

Connectors for larger cables that carry high current loads are prone to stress, vibration damage, and instability, making them more likely to separate or break, and are often impractical for confined environments due to their size and complex locking mechanisms.

Innovation Solution

A connection position assurance system featuring a dovetail tab and slot mechanism, with back stops, side tabs, and a hook arm, that securely engages with a female connector's grooved arms and hook bar to prevent disengagement, and includes a terminal position assurance lock for strain relief and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If larger cables are used to carry higher current loads, then current carrying capacity is improved, but connectors are more likely to suffer stress, vibration damage, and separation

Engineering Contradiction:
Improvecurrent carrying capacityVSAvoidconnector stability
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The locking mechanism is divided into multiple independent elements: a locking element with locking arms that engage with locking features on the connector body, and a separate position assurance retainer that provides additional stabilization. This segmentation allows each element to perform its specific function independently, distributing the mechanical stress and improving overall reliability without requiring a complete redesign of the connector structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking mechanism incorporates movable locking arms that can transition between engaged and disengaged states, providing dynamic response to vibration and stress conditions. The locking arms are designed to maintain engagement under normal operation while allowing for controlled release when needed, adapting to varying mechanical conditions without compromising connector stability.

Inventive Principle:
Principle #15Dynamics

2Power

If connectors are made larger to accommodate high current loads, then current carrying capacity is improved, but device size and locking mechanism complexity become impractical for confined environments

Engineering Contradiction:
Improvecurrent carrying capacityVSAvoidlocking mechanism complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The locking system is segmented into a locking element with integrated locking arms and a separate position assurance retainer. This segmentation allows the locking function to be achieved with simpler, more compact components compared to a monolithic locking mechanism, reducing overall device complexity while maintaining the ability to handle high current loads.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking mechanism is designed to be self-actuating through the engagement of locking arms with locking features on the connector body. The positioning retainer automatically secures the locking element in place without requiring additional actuators or complex control systems, simplifying the overall device structure and reducing the number of moving parts.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS7601019B2Electrical connection system
Publication Date: 2009.10.13 APTIV TECHNOLOGIES AG
  • US7601019B2 patent drawing
  • US7601019B2 patent drawing
  • US7601019B2 patent drawing

AI summary

A connection position assurance retainer may include mechanisms for retaining connectors. For example, a female connector and a male connector may be mated and retained. Male and female terminals, the female terminal including a terminal insert, may also be provided.