Connector Retainer Rib for Lateral Stability
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Solution Overview
Problem
Existing connectors with locking lances suffer from lateral deflection when subjected to strong rearward forces, compromising the holding force due to gaps on either side of the locking lance, which can lead to unstable retention of terminal fittings.
Innovation Solution
A connector design featuring a front retainer with ribs that enter lateral spaces alongside the locking lance, positioned at the height of the locking surface, to prevent lateral bending and enhance holding force, while simplifying the housing configuration by acting as a partition wall and guiding surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking lance is used to lock the terminal fitting, then the terminal fitting can be held securely, but lateral deflection occurs when strong rearward forces are applied
Solution Approach 1:
The support function is segmented between the locking lance (for primary locking) and the rib (for lateral support). The rib divides the lateral space into multiple support zones, preventing the locking lance from bearing lateral loads alone.
Solution Approach 2:
The rib acts as an intermediary structural element between the housing and the locking lance. It provides lateral support to the locking lance without interfering with its primary locking function, thereby preventing lateral deflection while maintaining holding force.
2Strength
If the housing constitutes the entire bottom wall and partition walls, then structural support is provided, but the configuration becomes complex
Solution Approach 1:
The rib merges multiple functions: it supports the locking lance laterally, acts as a partition wall between cavities, and provides structural support. This consolidation reduces the need for separate housing components, simplifying the overall configuration while maintaining strength.
Solution Approach 2:
The rib is designed as a multi-functional element that simultaneously provides lateral support to the locking lance, forms partition walls between cavities, and contributes to the overall structural support of the housing, thereby reducing device complexity.
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
The rib's placement in the locking lance's lateral space prevents lateral bending, ensuring a stable high holding force and simplifying the housing structure by acting as a partition and guiding surface, effectively maintaining terminal fittings securely.
Implementation Method 1
the rib is disposed in a height range of a locking portion of the locking lance to be locked to the terminal fitting... lateral bending of the locking lance can be prevented by the rib having entered the space lateral to the locking lance
Implementation Method 2
The locking lance retracts into a deflection space by being pushed by the terminal fitting when the terminal fitting is inserted, and resiliently returns to lock the terminal fitting when the terminal fitting is inserted properly
Data Source
AI summary
A connector with retainer includes a housing (20) configured such that terminal fittings (10) are inserted thereinto from behind, and a front retainer (40) to be mounted into the housing (20) from front. The housing (20) includes locking lances (31) capable of locking the terminal fittings (10) inserted to a proper position. The locking lances (31) are cantilevered forward. The front retainer (40) includes ribs (45) configured to enter spaces (S2) lateral to the locking lances (31). The ribs (45) are disposed in a height range of locking portions (32) of the locking lances (31) to be locked to the terminal fittings (10).