Waterproof Connector Housing Shield Water Stop Integration

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Solution Overview

Problem

Conventional waterproof connectors are enlarged due to the need for separate components to accommodate rubber plug pressers, which increases their size and complexity.

Innovation Solution

A connector design that uses a first water stop between the housing and shield, and a second water stop between the wire draw-out surface and shield, eliminating the need for additional holding members and allowing for a reduced component count, with the water stops being held in place by the shield's water stop holder and inter-wire holder, respectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If rubber plug pressers are accommodated in separate rubber plug accommodating portions of the shield shell, then the waterproof function is achieved, but the connector is enlarged

Engineering Contradiction:
Improvewaterproof functionVSAvoidconnector size
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent combines the rubber plug presser function with the water stop function by integrating the presser into the water stop structure. The water stop simultaneously performs both waterproofing and wire pressing functions, eliminating the need for separate presser components and reducing overall connector size while maintaining effective waterproof sealing.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The water stop is designed as a multi-functional component that serves multiple purposes: it provides waterproof sealing, presses the wire against the shield, and eliminates the need for separate presser structures. This universal component approach reduces the number of parts and compact the connector design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate components are used for water stopping and wire holding, then waterproof reliability is improved, but device complexity increases

Engineering Contradiction:
Improvewaterproof reliabilityVSAvoidcomponent count
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into fewer components. The water stop integrates wire pressing, waterproof sealing, and positioning functions that were previously performed by separate components. This reduction in component count simplifies the assembly process and reduces device complexity while maintaining waterproof reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The water stop is designed as a universal component that performs multiple critical functions simultaneously: sealing against water intrusion, pressing wires against the shield for electrical contact, and providing structural support. This multi-functionality reduces the overall component count and simplifies the connector design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11201432B2Connector
Publication Date: 2021.12.14 AUTONETWORKS TECH LTD
  • US11201432B2 patent drawing
  • US11201432B2 patent drawing
  • US11201432B2 patent drawing

AI summary

A connector that includes a wire; a housing having a wire draw-out surface, the wire being drawn out from the wire draw-out surface; a shield disposed outside the housing; a first water stop sandwiched between and held in contact with the housing and the shield; and a second water stop sandwiched between and held in contact with the wire drawn out from the wire draw-out surface and the shield, the shield including a water stop holder that holds the second water stop between the wire draw-out surface and the water stop holder.