Housing Connection Assembly With Single-Point Peripheral Sealing

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Solution Overview

Problem

Existing connection assemblies for electrical or fluid connections in housings face challenges in maintaining seal-tightness while minimizing the number of sealing points, often requiring high dimensional accuracy and resulting in potential leaky points and complex troubleshooting.

Innovation Solution

A connection assembly comprising an installation connection device with a body having a radially peripheral sealing means and flexible fixing structures, and a fit-on connection device with a cup-like form and internal sealing means, ensuring complete seal-tightness by interacting with the installation device upon coupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple individual seals are used for each line and plugging contact, then seal-tightness is achieved, but the number of leaky points increases and troubleshooting becomes difficult

Engineering Contradiction:
Improveseal-tightnessVSAvoidnumber of sealing points
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple individual sealing functions into a single peripheral seal structure. Instead of having separate seals for each line and plugging contact, the invention uses one continuous peripheral seal at the connection between the installation connection device and the housing, dramatically reducing the number of sealing points while maintaining comprehensive seal-tightness across all connection interfaces.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent segments the sealing function from the connection structures. The peripheral seal is separated as a distinct functional element that independently provides sealing for the entire connection assembly, allowing the sealing mechanism to be optimized separately from the electrical or fluid connection components, thereby reducing complexity while ensuring reliability.

Inventive Principle:
Principle #1Segmentation

2Reliability

If high dimensional accuracy is required for each seal, then seal-tightness is maintained, but manufacturing precision requirements increase and cost rises

Engineering Contradiction:
Improveseal-tightnessVSAvoiddimensional accuracy
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

By merging multiple sealing functions into a single peripheral seal, the invention reduces the cumulative dimensional accuracy requirements. Instead of requiring precise alignment and fit for multiple separate seals, the design needs only one critical sealing interface, thereby lowering manufacturing precision requirements while maintaining seal-tightness.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If individual seals are used for each plugging contact, then complete sealing is achieved, but the force required for attachment increases

Engineering Contradiction:
Improveseal-tightnessVSAvoidattachment force
Core Design Contradiction:
ReliabilityVSForce

Solution Approach 1:

The patent combines the sealing function into a single peripheral seal that is engaged through one attachment interface between the installation connection device and the housing. This eliminates the need for multiple separate attachment forces required by individual seals, reducing the total attachment force needed while maintaining complete sealing across all connections.

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If multiple seals and sealing points are used, then housing seal-tightness is achieved, but access points for internal connections may be required

Engineering Contradiction:
Improvehousing seal-tightnessVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

By consolidating all sealing functions into a single peripheral seal at the housing interface, the invention eliminates the need for additional access points. The single seal provides complete sealing for the entire housing opening, allowing all internal connections to be made through the connection portion without compromising seal-tightness, thereby simplifying installation.

Inventive Principle:
Principle #5Merging (Combining)

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

Simplifies the connection process and enhances seal-tightness against fluids and solids, reducing leaky points and improving troubleshooting by minimizing individual sealing points.

Implementation Method 1

The fixing structures are designed such that, in the state of installation in a suitable housing opening, they limit or prevent movement, in the installation direction, of the installation connection device installed in the housing opening

Methodology Applied
Scientific EffectMechanical Fastener: Mechanical Fastener

Implementation Method 2

The installation portion comprises a radially peripheral sealing means designed for sealing with respect to the housing opening or with respect to the housing wall containing the housing opening

Methodology Applied
Scientific EffectSealing:

Implementation Method 3

a rotation of the inserted body by a minimum angle, optionally with simultaneous application of a tensile force to the installation connection device, deflects the fixing structures toward the center of the body

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250320942A1Connection assembly having an installation connection device and a fit-on connection device
Publication Date: 2025.10.16 NEXANS SA
  • US20250320942A1 patent drawing
  • US20250320942A1 patent drawing
  • US20250320942A1 patent drawing

AI summary

An installation connection device for installation in a housing opening includes a body, which has an installation portion, and a connection portion. The installation portion has a sealing means designed for sealing with respect to the housing opening or with respect to the housing wall containing the housing opening and is delimited at the transition to the connection portion by a stop structure. The installation portion also has fixing structures designed to fix the installation portion in the housing opening or to the wall surrounding the housing opening. On the side of the stop structure opposite from the installation portion, a collar having a peripherally closed wall is integrally formed on the stop structure. In the body, a holder is removably supported and fixed without a seal, which holder is designed to releasably receive, without a seal, one or more first line connection devices, which each provide a connection point of a line connected thereto for a corresponding second line connection device provided in a fit-on connection device coupled to the connection portion. The holder is supported in the body such that the first line connection devices are accessible within the space surrounded by the collar wall.