Flat Wiring Member Crossing Hold Structure for Reduced Thickness
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Solution Overview
Problem
In flat wiring members, the crossing of wire-like transmission members leads to increased thickness, which can be further exacerbated by bending forces, particularly at the crossing regions where the wires overlap.
Innovation Solution
A wiring member design that includes a holding member to maintain the positional relationship between wire-like transmission members at crossing points, using methods such as tape wrapping, sheet fixation, or joining members to prevent displacement and maintain the wires' alignment, thereby reducing the overall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wire-like transmission members are arranged to cross each other in a flat wiring member, then connection flexibility and routing adaptability are improved, but the thickness of the wiring member increases at crossing regions
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional stacked configuration. Multiple wire-like transmission members are arranged in different layers (first layer, second layer, third layer) with alternating crossing patterns. This vertical stacking allows wires to cross in one layer without interfering with wires in other layers, thereby maintaining thin profile while achieving flexible routing and multiple connections.
Solution Approach 2:
The patent embeds multiple layers of wire-like transmission members within a compact stacked structure. Each layer contains crossing wires that are nested within the overall assembly, with alternating layers creating a dense, space-efficient configuration. This nesting approach maximizes connection density while minimizing the overall thickness of the wiring member.
2Adaptability or versatility
If bending force is applied to the flat wiring member, then flexibility and adaptability to curved surfaces are improved, but the thickness increases further in crossing regions due to wire displacement
Solution Approach 1:
The patent creates a dynamic, flexible structure where multiple layers of wires can independently deform under bending forces. The stacked configuration allows each layer to flex without forcing displacement of wires in other layers, maintaining stable thickness characteristics even when bent. The alternating crossing patterns distribute mechanical stress across multiple layers, preventing localized thickening.
Solution Approach 2:
By distributing wires across multiple vertical layers, the patent enables the wiring member to bend and flex while maintaining stable thickness. The vertical separation between layers provides mechanical independence, allowing the structure to adapt to curved surfaces without causing wires to displace horizontally and increase thickness at crossing regions.
3Volume of moving object
If multiple wire-like transmission members are stacked to reduce thickness, then the overall profile is improved, but the positional relationship between crossing wires becomes unstable
Solution Approach 1:
The patent establishes a predetermined, alternating crossing pattern across multiple layers before the wiring member is subjected to external forces or assembly. The first layer has wires crossing in one pattern, the second layer alternates with a different crossing pattern, and the third layer repeats the first pattern. This pre-established alternating configuration ensures stable positional relationships and prevents wire displacement during handling or installation.
Solution Approach 2:
The patent divides the wiring member into distinct functional layers, each containing specific wire-like transmission members with defined crossing patterns. The first layer, second layer, and third layer are segmented with alternating configurations, which stabilizes the overall structure by distributing mechanical and electrical functions across independent but coordinated segments.
Data Source
AI summary
A wiring member includes a first wiring member including a first sheet, and a plurality of first wire-like transmission members fixed onto the first sheet. The plurality of first wire-like transmission members include a second wire-like transmission member, and a third wire-like transmission member extending over the second wire-like transmission member and crossing the second wire-like transmission member. The wiring member further includes a holding member configured to hold a positional relationship between the second and third wire-like transmission members at a crossing part of the second and third wire-like transmission members. The holding member includes a second sheet fixed to the first sheet so as to cover the crossing part. The second sheet includes a fixed region fixed to the first sheet located around the crossing part, and the second sheet includes a non-fixed region that is not fixed to the first sheet.