Sealing Member Guide Holes Maintain Wire Alignment

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Solution Overview

Problem

Existing sealing solutions for electric wires are prone to air tightness loss when subjected to strong forces, causing the rubber stopper to shift and the wires to become misaligned, which compromises the seal between the wires and the stopper.

Innovation Solution

The use of guide holes and lips in the sealing member ensures that electric wires are properly aligned and held in place, maintaining air tightness by guiding them through specific holes and using lips to secure the wires against the inner walls, preventing displacement and misalignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a relatively strong force is applied to the electric wires, then the wires can be pulled through the rubber stopper, but the rubber stopper may be displaced and air tightness decreases

Engineering Contradiction:
Improvewire insertionVSAvoidair tightness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The sealing member is divided into multiple functional segments: a rubber stopper for sealing, a guide member with guide holes for wire alignment, and a cover for protection. This segmentation allows each component to perform its specific function - the guide member ensures wires pass through correctly positioned guide holes, preventing rubber stopper displacement while maintaining air tightness during wire insertion

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide member acts as an intermediary between the wires and the rubber stopper. It provides guide holes that align with through holes in the rubber stopper, ensuring wires are properly directed and positioned before entering the sealing interface, thus preventing displacement and maintaining air tightness

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the rubber stopper is made tight to hold wires, then air tightness is maintained, but the wires may become misaligned when force is applied

Engineering Contradiction:
Improveair tightnessVSAvoidwire alignment
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The guide member is positioned in advance within the rubber stopper, with guide holes pre-aligned with the through holes. This preliminary positioning ensures that wires are guided through the correct paths before the sealing action occurs, maintaining both air tightness and wire alignment even when force is applied

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3148025B1Sealing member
Publication Date: 2019.07.31 AUTONETWORKS TECH LTD
  • EP3148025B1 patent drawingFigure 1
  • EP3148025B1 patent drawingFigure 2
  • EP3148025B1 patent drawingFigure 3

AI summary

A sealing member 10 includes a rubber stopper 15 and a guide member 16. The rubber stopper 15 includes an electric wire through portion 21 including first to fourth through holes 22A, 22B, 22C and 22D through which first to fourth electric wires 13A, 13B, 13C and 13D are passed, respectively. The guide member 16 is located more to a rear than the electric wire through portion 21 in an extending direction A in which the first to the fourth electric wires 13A, 13B, 13C and 13D passed through the first to the fourth through holes 22A, 22B, 22C and 22D extend. The guide member 16 includes first to fourth guide holes 38A, 38B, 38C and 38D through which the first to the fourth electric wires 13A, 13B, 13C and 13D are passed and aligned with the first to the fourth through holes 22A, 22B, 22C and 22D.