Wire Harness Tray Assembly Engine Mount Protection

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Solution Overview

Problem

Utility vehicles face challenges in managing wire harnesses due to issues such as paint spray interference, contamination, and torque-induced deformation during engine mounting, which existing solutions fail to adequately address.

Innovation Solution

A wire harness tray assembly comprising a polymer-based first tray base and cover with interlocking features, engine mount capabilities, and a torque limiting metal sleeve to securely house and protect wire connectors and harnesses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If wire harnesses are mounted directly on the engine, then installation is simple, but they are exposed to paint spray interference and contamination

Engineering Contradiction:
Improveinstallation simplicityVSAvoidpaint spray interference and contamination
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The wire harness system is segmented into two parts: the wire harness itself and the protective tray assembly. The tray acts as a separate protective enclosure that houses the wire harness, allowing it to be mounted on the engine while shielded from paint spray and contamination. This segmentation resolves the contradiction by maintaining installation simplicity while adding protective functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tray assembly serves as an intermediary between the wire harness and the harmful environment (paint spray, contaminants). It mediates the interaction by providing a protective barrier that prevents direct exposure of the wire harness to harmful factors while still allowing the harness to be mounted on the engine.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If engine mounting fasteners are tightly secured, then engine mounting stability is improved, but torque-induced deformation of wire harnesses occurs

Engineering Contradiction:
Improveengine mounting stabilityVSAvoidwire harness deformation
Core Design Contradiction:
Stability of the object's compositionVSShape

Solution Approach 1:

The tray assembly incorporates cushioning or compliant features that are designed in advance to absorb or mitigate the torque-induced deformation. This beforehand cushioning allows the fasteners to be tightly secured for engine mounting stability while the cushioning elements prevent the full transmission of torque to the wire harness, thereby preventing deformation.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The tray assembly changes the mechanical parameters of the mounting system by introducing compliant or flexible elements that can deform under torque without transmitting that deformation to the wire harness. This parameter change allows the fasteners to be tightened securely while protecting the wire harness shape.

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If a protective enclosure is added for wire harnesses, then protection from contaminants is improved, but device complexity increases

Engineering Contradiction:
Improveprotection from contaminantsVSAvoidassembly complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The protective tray is merged with the engine mounting system by integrating mounting features directly into the tray structure. This combining of functions (protection + mounting) reduces overall device complexity compared to having separate protective enclosures and mounting systems. The tray simultaneously provides contamination protection and serves as the mounting structure for the wire harness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The tray assembly is designed as a multi-functional component that simultaneously provides: (1) protection from contaminants, (2) engine mounting capability, and (3) wire harness organization. This universality reduces device complexity by consolidating multiple functions into a single integrated structure rather than requiring separate components for each function.

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

Data Source

PatentUS11433830B2Wire harness tray assembly
Publication Date: 2022.09.06 DEERE & CO
  • US11433830B2 patent drawing
  • US11433830B2 patent drawing
  • US11433830B2 patent drawing

AI summary

A wire harness tray assembly comprising a first tray base comprising a first plurality of wire egress openings, a wire connector feature, an engine mount feature configured to removably engage a fastener, a first tray cover comprising a connector mounting clip, a second plurality of wire egress openings, where each of the second plurality of wire egress openings corresponds to the first plurality of wire egress openings, wherein the first tray base couples with the first tray cover.