Connector Locking Structure With Three-Point Support Strength
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Solution Overview
Problem
Conventional connectors with a connector position assurance function have mechanical strength issues at the engaging portions, particularly where the housing and position assurance member engage, leading to potential weakness.
Innovation Solution
A connector design featuring a housing with an assembly space and a locking member supported at three points, including a recessed installation portion and a column, which enhances mechanical strength by distributing the force more evenly and reducing direct impact on the locking member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing and position assurance member are engaged to form a locking mechanism, then the connector achieves position assurance function, but the mechanical strength of the engaging portion is reduced
Solution Approach 1:
The invention transitions from a single-point engagement between the housing and position assurance member to a distributed three-point support system. The locking member is supported at three distinct locations: two points on the inner surface of the housing and one point on the position assurance member, creating a triangular support structure that distributes mechanical loads across multiple engagement points rather than concentrating stress at a single location.
Solution Approach 2:
The locking member is divided into functionally distinct segments: a body portion that provides structural integrity, an installation portion that interfaces with the housing, and a locking portion that engages with the position assurance member. This segmentation allows each portion to be optimized for its specific function while collectively providing both position assurance and enhanced mechanical strength.
2Reliability
If the locking member is directly engaged with the housing, then the locking function is achieved, but the locking member is susceptible to damage from external forces and impacts
Solution Approach 1:
The recessed installation portion is designed to absorb and distribute external forces before they reach the locking member's critical structural elements. By positioning the installation portion recessed from the outer surface of the housing, a cushioning effect is created that protects the locking member from direct impact, thereby reducing susceptibility to damage from external forces while maintaining the locking function.
Solution Approach 2:
The housing structure is designed with non-uniform local properties: the installation portion is recessed to provide enhanced protection and force distribution, while the body portion maintains full structural integrity. This localized modification at the installation portion provides targeted protection against external forces without compromising the overall locking mechanism's functionality.
Data Source
AI summary
A connector includes: a housing configured to be connectable to a mating connector and forming an assembly space along a connecting direction; and a position assurance member inserted into the assembly space and assembled with respect to the housing to be movable from a temporary locking position to a main locking position along the connecting direction, in which the assembly space is formed between two side walls formed in the housing and extending in the connecting direction.