Vehicle Wire Harness Bulge Suppression via Biasing
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Solution Overview
Problem
Conventional power supply devices for vehicles with slide doors experience wire harness deformation, causing a bulge towards the vehicle body when the slide door is half-opened, which is undesirable as it protrudes into the occupant space.
Innovation Solution
A power supply device with a wire harness that includes a biasing mechanism to press the wire harness against the slide door, forming a U-shaped curvature when the slide door is half-opened, reducing the bulge towards the vehicle body by utilizing a combination of biasing parts on both the vehicle body and slide door sides to manage the wire harness's movement and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire harness is held in a freely swingable manner about a swing shaft, then the wire harness can move without difficulty following the slide door when the slide door opens and closes, but a portion of the wire harness bends in a form bulging toward the vehicle body side when the slide door is half-opened
Solution Approach 1:
The wire harness is pre-configured with a U-shaped curvature and held in a specific extended state between the vehicle body and slide door. This preliminary positioning ensures that when the slide door opens, the wire harness follows a predetermined path that prevents bulging toward the vehicle body while maintaining smooth movement capability
Solution Approach 2:
The patent changes the spatial parameters of the wire harness by defining its position and orientation relative to the slide door and vehicle body. Specifically, the wire harness is configured to extend in the closing direction of the slide door when half-opened, transforming it from a freely swinging configuration to one with controlled geometry that eliminates harmful curvature
2Adaptability or versatility
If the wire harness extends freely when the slide door opens, then the wire harness can accommodate door movement, but the wire harness protrudes into the vehicle interior occupying occupant space
Solution Approach 1:
The patent precisely defines the spatial parameters of the wire harness, including its position, orientation, and curvature radius. By controlling these parameters, the wire harness maintains the necessary flexibility to accommodate door movement while its path is constrained to prevent protrusion into the vehicle interior
Solution Approach 2:
The U-shaped curvature of the wire harness acts as an intermediary configuration that mediates between the slide door movement and the vehicle body space. This intermediate curved path allows the wire harness to absorb the movement dynamics while maintaining a compact form that does not encroach on occupant space
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
Effectively suppresses the bulge of the wire harness towards the vehicle body when the slide door is half-opened, reducing the curvature and maintaining a more linear configuration, thereby minimizing the load on the wire harness and preventing it from protruding into the vehicle interior.
Implementation Method 1
a biasing part biasing a portion of the wire harness on the slide door side in a direction to press against the slide door
Data Source
AI summary
Provided is a power supply device capable of suppressing bulge of a wire harness toward a vehicle body when a slide door is half-opened. The power supply device is provided with a wire harness arranged between a vehicle body and a slide door, a portion of the wire harness on the vehicle body side extending in the closing direction of the slide door when the slide door is half-opened, and a door side coil spring (a biasing part) for biasing a portion of the wire harness on the slide door side in the biasing direction pressing against the slide door on the closing direction side of the slide door in order to suppress a curvature convex toward the inside of the vehicle body at the time of half-opening of the slide door.