Waterproof USB-C Connector Rib Interference Glue Control

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Solution Overview

Problem

Existing waterproof USB Type-C connectors face issues with glue overfilling during the sealing process, which affects their waterproof performance.

Innovation Solution

The design incorporates an insulative shell with a protruding rib that interferes with the metallic shielding shell, creating a first mating cavity that prevents excess glue from flowing into a secondary cavity, while ensuring a secure mounting of the insulative shell to the metallic shielding shell through glue coagulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a sealing member is formed by glue coagulation to improve waterproof performance, then waterproof performance is improved, but glue overfilling occurs in the mating space

Engineering Contradiction:

Improvewaterproof performanceVSAvoidglue filling control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent divides the mating space into two separate cavities: a first mating cavity for receiving the plug connector and a second mating cavity for receiving the sealing member. This segmentation prevents glue from flowing into the first mating cavity and ensures precise control over where the sealing glue is applied, eliminating the overfilling problem while maintaining waterproof performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts the sealing function from the main connector body by creating a separate second mating cavity dedicated to receiving the sealing member. This separation allows the sealing process to be independent from the electrical connection process, enabling precise glue application without affecting the plug connector assembly.

Inventive Principle:

Principle #2Taking out (Extraction)

2Manufacturing precision

If the insulative shell is mounted to the metallic shielding shell to prevent glue overfilling, then glue filling control is improved, but mounting security must be ensured

Engineering Contradiction:

Improveglue filling controlVSAvoidmounting security

Core Design Contradiction:

Manufacturing precisionVSStrength

Solution Approach 1:

The insulative shell is nested within the metallic shielding shell, with the insulative shell's outer surface fitting into the inner cavity of the metallic shielding shell. This nested structure provides both precise positioning to control glue filling and inherent mechanical interlocking to ensure mounting security.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent applies local interference features at specific locations where the insulative shell meets the metallic shielding shell. These localized interference structures provide targeted mounting security at critical joints without affecting the overall glue filling control in the mating spaces.

Inventive Principle:

Principle #3Local quality

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

This solution effectively prevents glue overfilling, enhancing the waterproof performance of the electrical connector and ensuring a firm mounting of the insulative shell to the metallic shielding shell, thereby improving the connector's sealing efficiency.

Implementation Method 1

a sealing member forming by glue coagulation

Methodology Applied

Scientific EffectGlue coagulation: Coagulation

Data Source

PatentUS10063005B2Waterproof electrical connector having insulative shell interfering with meitallic shell

Publication Date: 2018.08.28 FOXCONN INTERCONNECT TECHNOLOGY LTD

AI summary

An electrical connector includes an insulative housing, a metallic shielding shell enclosing the housing, and an insulative shell enclosing the metallic shielding shell. The metallic shielding shell forms a first mating cavity. The insulative shell includes a round rib protruding from an inner sidewall of the insulative shell. The round rib and the metallic shielding shell interfere with each other.