Slide Wiring Apparatus Friction Reduction via Step Portion
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Solution Overview
Problem
Conventional slide wiring apparatuses experience increased frictional resistance and noise during the sliding movement of sliding members due to the interaction between the wire harness and the accommodation portion's side wall, leading to higher operational loads and noise production.
Innovation Solution
A slide wiring apparatus with a bendable external member that restricts wire harness bending to one direction, combined with a guide and accommodation portion design featuring a step portion and inclined surfaces, reduces friction by maintaining linearity and preventing the external member from sliding against the side walls, thereby minimizing contact and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wire harness is accommodated in the accommodation portion without a step portion, then the wire harness can be easily stored, but the external member slides against the side wall causing increased frictional resistance and noise
Solution Approach 1:
The patent applies local quality by creating a step portion at a specific location within the accommodation portion. This step portion is formed by making the side wall recede in the longitudinal direction, creating a localized structural feature that prevents the external member from sliding against the side wall during wire harness extraction, thereby reducing frictional resistance and noise at that specific location without affecting the overall accommodation function.
2Adaptability or versatility
If the external member is made bendable in multiple directions, then the wire harness has greater flexibility, but it contacts the side wall during sliding movement increasing operational load
Solution Approach 1:
The patent segments the accommodation space by introducing a step portion that divides the accommodation portion into different zones. This segmentation creates a designated path for the external member that separates the flexible bending motion from the sliding contact with side walls, allowing the wire harness to maintain flexibility while reducing operational load through controlled movement paths.
Data Source
AI summary
A slide wiring apparatus configured to electrically connect a vehicle body and a sliding member that is provided in the vehicle body. The slide wiring apparatus includes a support rail, a slider configured to slidably support the sliding member, a wire harness that is disposed inside the support rail and is drawn out of the support rail from an opening portion of the support rail, a guide portion configured to fold, toward the support rail, an extra length portion of the wire harness that is drawn out from the opening portion of the support rail, an accommodation portion for accommodating the extra length portion of the wire harness in a state in which the extra length portion is folded in a U-shape, and an external member that is bendable in only one direction.