Receptacle Connector Shell with Integral Restriction Portion
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Solution Overview
Problem
Receptacle connectors face issues with water permeation and stress concentration, leading to reduced waterproof performance and increased maintenance costs due to the presence of intervals between the shell and restriction portions, which can cause damage and degrade the insulation portion.
Innovation Solution
A receptacle connector design featuring a shell and restriction portion integrally formed without joints, incorporating curved dispersion surfaces to disperse stress and prevent excessive insertion, thereby enhancing waterproof performance and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the restriction portion is formed by tearing and folding the shell, then the restriction portion can be easily manufactured, but an interval is formed between the shell and restriction portion causing water permeation
Solution Approach 1:
The restriction portion and shell are merged into a single integrally formed component, eliminating the interval between them that caused water permeation. The shell includes both the shell body and restriction portion as one piece, preventing water from entering through gaps while maintaining manufacturing efficiency through a single-forming process.
Solution Approach 2:
The shell is designed to serve multiple functions: it provides structural housing (shell body) and insertion restriction (restriction portion) simultaneously. This multi-functionality eliminates the need for separate components and their associated joints, thereby preventing water permeation while maintaining ease of manufacture.
2Ease of manufacture
If the restriction portion is formed by tearing and folding the shell, then the restriction portion can be easily manufactured, but stress concentration occurs causing damage and reduced service life
Solution Approach 1:
By merging the restriction portion with the shell body into an integrally formed structure, the stress distribution is improved. The continuous material structure eliminates stress concentration points that would occur at joints or tears, enhancing the overall strength and durability while maintaining manufacturing simplicity.
Solution Approach 2:
The restriction portion incorporates curved surfaces (first and second dispersion surfaces) that help disperse applied stress across a broader area. These curved geometries prevent stress concentration by distributing mechanical loads more evenly through the structure, reducing the likelihood of damage and extending service life.
3Ease of manufacture
If the restriction portion is formed by tearing and folding the shell, then the restriction portion can be easily manufactured, but the insulation portion may be damaged by excessive insertion
Solution Approach 1:
The integral formation of the restriction portion with the shell ensures a precise fit and proper positioning relative to the insulation portion. This eliminates gaps and misalignments that could allow excessive insertion, thereby protecting the insulation portion while maintaining ease of manufacture through single-forming processes.
Solution Approach 2:
The restriction portion is pre-formed with specific geometric features (curved dispersion surfaces) that actively prevent excessive insertion before it can damage the insulation portion. This preliminary protective action is built into the structure itself, ensuring the insulation portion is protected from the outset without requiring additional manufacturing steps.
Data Source
AI summary
The present invention relates to a receptacle connector including a plurality of contacts configured to electrically connect a plug connector and a substrate coupled with an electronic device, an insulation portion with which the contacts are coupled, and a shell with which the insulation portion is coupled. Here, the shell includes a shell body, in which an accommodation hole configured to allow the plug connector to be inserted therein is formed, and a restriction portion protruding toward the accommodation hole to restrict a movable distance of the plug connector in an insertion direction in which the plug connector is inserted into the accommodation hole.