Wire Harness Grommet With Pull Handle for Panel Installation
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Solution Overview
Problem
Existing grommets lack a mechanism to facilitate easy installation through holes in walls, as they do not have a pull handle to assist in pulling the grommet into place while allowing wires to pass through.
Innovation Solution
A wire harness grommet design featuring a grommet body with a first and second flared portion and a narrow portion, along with a pull handle forming a closed loop, allowing for easy grasping and pulling through a panel opening, and a method of forming this grommet using a mold for the grommet body and pull handle as a monolithic piece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a grommet is designed with a simple structure without additional components, then the device complexity is reduced, but the ease of operation deteriorates because the grommet cannot be easily grasped and pulled through wall holes during installation
Solution Approach 1:
The pull handle serves multiple functions: it acts as a gripping surface for installation, provides structural reinforcement at the grommet opening, and can serve as a alignment aid during installation. This multi-functionality resolves the contradiction by adding value without purely aesthetic or auxiliary components.
Solution Approach 2:
The pull handle is integrated directly with the grommet body as a single molded piece, combining the installation aid function with the structural grommet components. This merging eliminates the need for separate attachment mechanisms while providing both installation ease and structural integrity.
2Ease of operation
If a pull handle is added to the grommet to facilitate installation, then the ease of operation improves, but the device complexity increases due to the additional component
Solution Approach 1:
The pull handle is integrated directly with the grommet body as a single molded piece, combining the installation aid function with the structural grommet components. This merging eliminates the need for separate attachment mechanisms while providing both installation ease and structural integrity.
Solution Approach 2:
The pull handle serves multiple functions: it acts as a gripping surface for installation, provides structural reinforcement at the grommet opening, and can serve as a alignment aid during installation. This multi-functionality resolves the contradiction by adding value without purely aesthetic or auxiliary components.
3Strength
If the grommet body is made robust to ensure durability and sealing, then the strength is improved, but the ease of operation worsens because the grommet becomes harder to manipulate and pull through openings
Solution Approach 1:
The grommet body is segmented into distinct functional zones: the narrow portion for panel engagement, the flared portions for sealing and structural strength, and the pull handle for manipulation. This segmentation allows each zone to be optimized independently for its specific function.
Solution Approach 2:
The flared portions of the grommet body feature curved, tapered surfaces that facilitate insertion through panel openings while maintaining structural integrity. The curved geometry allows the robust grommet body to be pulled through openings more easily by distributing stress during installation.
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
Enables efficient installation of the grommet by allowing the pull handle to be grasped and the grommet body to be pulled through a panel opening, ensuring proper alignment and sealing, while allowing wires to pass through the grommet body.
Implementation Method 1
pouring a liquid elastic forming material into a mold and allowing the elastic forming material to solidify
Data Source
AI summary
A wire harness grommet includes a grommet body including a first flared portion, a second flared portion and a narrow portion between the first flared portion and the second flared portion. The first flared portion has a wire receiving opening extending therethrough for receiving one or more wires. A pull handle has a first end located at a first side of the first flared portion and a second end located at an opposite, second side of the first flared portion forming a closed loop.