Power Converter Housing Rib for Vibration-Safe Wire Harness Retention
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Solution Overview
Problem
Existing power conversion units for vehicles fail to reliably hold wire harnesses in place due to vibrations, leading to potential dislodgment and interference with other components.
Innovation Solution
A power conversion unit design incorporating a rib protruding from the side wall of the housing, forming a recessed portion with the lid to create a holding portion that securely retains the wire harnesses without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wire harness is held in the clearance between the housing and the frame, then the wire harness can be housed without additional components, but the wire harness may come out of the clearance due to vibration and cannot be reliably held
Solution Approach 1:
The holding portion is formed by merging the rib (protruding from the side wall) and the lid together to create a integrated holding structure. This combines two existing components to form a new functional unit that reliably holds the wire harness without adding separate dedicated holding components.
Solution Approach 2:
The solution transitions from relying solely on horizontal clearance between components to utilizing vertical dimension by having the rib extend upward and the lid cover from above, creating a three-dimensional holding portion that secures the wire harness through multiple spatial constraints.
2Volume of stationary object
If no specific component is used to house the wire harness, then space is saved, but the wire harness cannot be reliably retained under vibration conditions
Solution Approach 1:
The holding function is merged into the existing structural components (rib and lid) rather than being a separate dedicated feature. This allows the wire harness to be held reliably while maintaining compact space utilization, as the holding portion is formed by the natural extension and combination of existing structural elements.
Data Source
AI summary
The power conversion unit of the vehicle includes a power converter, a wire harness electrically connected to the power converter, a housing that houses the power converter and the wire harness, and a lid that covers an opening of the housing. The housing has a rib that is a part of the side wall portion thereof and protrudes to the inside of the housing and extends toward the lid, and forms a recessed portion that opens toward the lid with a part of the side wall portion. The rib and the lid define a holding portion of the wire harness.