Segmented Mounting Device for Gas Turbine Wire Harnesses

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Solution Overview

Problem

Existing mounting devices for electrical harnesses in gas turbine engines are prone to detachment due to high temperature shrinkage, requiring a solution that maintains attachment without relying on heat-shrinking methods and ensures stability across varying environments.

Innovation Solution

A mounting device comprising two shells with banding zones and clamping zones, paired with an intermediary material such as vulcanizing tape or silicone, and fasteners to secure the shells around the wire bundle, restricting movement and maintaining attachment even at high temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heat shrink bobbin is pulled over the end of a harness and heat-shrunk, then the mounting device can be attached to the harness, but the mounting device may detach under high temperature conditions due to harness shrinkage

Engineering Contradiction:

Improveattachment reliabilityVSAvoidhigh temperature environment

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The mounting device is divided into two separate shells (first shell and second shell) that can be independently positioned and secured to the harness. This segmentation allows each shell to be independently fastened, preventing detachment even when the harness shrinks due to high temperatures.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mounting device is positioned on the harness before the harness is subjected to high temperature conditions. The fasteners are pre-installed to secure the shells in place, preventing the harness from shrinking and detaching the mounting device during subsequent high temperature operation.

Inventive Principle:

Principle #10Preliminary action

2Ease of manufacture

If a mounting device requires pulling over the end of a harness, then it can be installed, but the installation process becomes complex and time-consuming

Engineering Contradiction:

Improveinstallation easeVSAvoidinstallation time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The mounting device is segmented into two shells that can be independently positioned and fastened to the harness. This eliminates the need to pull the entire mounting device over the harness end, allowing for simpler, step-by-step installation that reduces time and complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary material (such as adhesive or friction-fit interface) between the shells and the harness that facilitates easy attachment without requiring the mounting device to be pulled over the harness end. This intermediary enables simple snap-fit or adhesive-based installation.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If the mounting device uses a simple structure, then it is easy to manufacture, but it may not provide sufficient restriction against shell movement along the wire bundle

Engineering Contradiction:

Improvemounting device structureVSAvoidshell movement restriction

Core Design Contradiction:

Device complexityVSStability of the object's composition

Solution Approach 1:

The shells are pre-positioned on the harness with their fasteners engaged before the harness is installed in the final configuration. This preliminary positioning ensures that the shells are correctly oriented and secured, preventing any movement along the wire bundle during subsequent installation and operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces complex mechanical retention mechanisms with simpler fastening systems such as adhesive bonds, friction-fit interfaces, or snap-fit connections. These simplified mechanical systems provide sufficient restriction against shell movement while maintaining ease of manufacture and installation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

The solution effectively secures the electrical harness by restricting shell movement along the wire bundle and maintaining attachment in high-temperature environments, enhancing durability and versatility across different applications.

Implementation Method 1

The mounting device includes an intermediary material circumscribing the wire bundle, the intermediary material including at least one of a substantially non-porous material, a vulcanizing tape, and a silicone material.

Methodology Applied

Scientific EffectVulcanization:

Data Source

PatentUS9627874B2Mounting device and method of assembling the same

Publication Date: 2017.04.18 UNISON INDUSTRIES LLC

AI summary

A method and a system for a mounting device are provided. The mounting device includes at least two shells, each shell having an inner surface and an outer surface wherein the outer surface includes a first banding zone, a second banding zone, and a clamping zone extending between the first banding zone and the second banding zone and a pair of shoulders bounding each of the first banding zone and second banding zone. The mounting device also includes an intermediary material circumscribing the wire bundle including at least one of a substantially non-porous material, a vulcanizing tape, and a silicone material. The mounting device further includes at least one fastener configured to engage the first banding zone or second banding zone to couple the first shell and the second shell to the wire bundle and the intermediary material.