Front Retainer Connector Structure for Peripheral Wall Rigidity
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Solution Overview
Problem
Existing connectors face issues with the deformation of peripheral walls due to excessive compressive forces from radial contacts, leading to potential looseness and reduced rigidity in attachment members like front holders or front retainers.
Innovation Solution
A connector design featuring a first housing, a second housing, and an attachment member with protrusions and bridging portions that connect pairs of protrusions, ensuring rigidity by distributing compressive forces and preventing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protrusions are provided on the peripheral wall to prevent looseness by contacting the hood portion and tower portion, then looseness prevention is improved, but the peripheral wall may deform under excessive compressive force
Solution Approach 1:
The peripheral wall is divided into multiple protrusions that are arranged in pairs facing each other across the internal space. Each protrusion pair independently contacts the hood portion and tower portion, distributing the compressive force across multiple discrete contact points rather than concentrating it on a single continuous wall section, thereby preventing deformation while maintaining looseness prevention.
Solution Approach 2:
The protrusions are specifically positioned on the peripheral wall at locations where contact with the hood portion and tower portion occurs. By concentrating the structural reinforcement at these specific local contact points rather than throughout the entire peripheral wall, the design prevents deformation where needed while minimizing overall material usage and maintaining manufacturing efficiency.
2Reliability
If protrusions are arranged to contact both hood portion and tower portion, then looseness prevention is improved, but compressive force concentration causes peripheral wall deflection
Solution Approach 1:
The peripheral wall is segmented into multiple discrete protrusions arranged in pairs, where each protrusion pair independently bears a portion of the compressive load. This segmentation distributes the stress across multiple localized contact points between the protrusions and the housing components, preventing stress concentration that would cause wall deflection.
Solution Approach 2:
The protrusions are arranged asymmetrically in pairs facing each other across the internal space, with each pair positioned to optimize the distribution of compressive forces. This asymmetric pairing allows the structure to handle radial compressive forces from both the hood portion and tower portion more evenly, reducing overall stress on the peripheral wall.
Data Source
AI summary
A connector includes a first housing and a second housing that are fittable together, and a front retainer attached to the first housing. The first housing has a housing body that houses a female terminal fitting therein, the front retainer has a peripheral wall portion that surrounds an outer peripheral surface of the housing body, the second housing has a hood portion that houses the housing body and the front retainer therein, the peripheral wall portion has a plurality of protrusions that contact an inner peripheral surface of the hood portion on an outer peripheral surface thereof, the protrusions are arranged in a pair at positions facing each other across an internal space of the peripheral wall portion on the outer peripheral surface of the peripheral wall portion, and the peripheral wall portion has a bridging portion that extends through the internal space.