Vehicle Wire Harness Trunk Line Distributor Design
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Solution Overview
Problem
Existing wire harnesses for vehicles have complex wiring paths that are not optimized for simplicity and versatility across different vehicle types and configurations, leading to inefficiencies in assembly and maintenance.
Innovation Solution
A wire harness design featuring a linear trunk line section with bundled power supply and communication lines, interconnected by trunk line middle and end distributors that simplify the wiring path by standardizing the trunk line and varying the middle wiring bodies according to vehicle type, platform, and grade, with optional divided distributors for enhanced flexibility and expandability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a common harness is used for four types of vehicles with front harness and integrated harness wired along the same path, then versatility across vehicle types is improved, but wiring path complexity increases
Solution Approach 1:
The wire harness is segmented into distinct functional modules: front harness, integrated harness (floor harness and rear harness), cowl harness, and instrument harness. Each module can be independently configured and assembled, allowing simplification of individual wiring paths while maintaining overall system versatility across different vehicle types
Solution Approach 2:
The patent creates a universal harness system that can be adapted to four types of vehicles (right-hand drive, left-hand drive, sedan-type, and van-type) through standardized connection interfaces and modular design. The common harness serves as a universal backbone that accommodates different vehicle configurations without requiring complete redesign of the wiring system
2Ease of manufacture
If connection part between front harness and integrated harness is arranged on the same side, then assembly is simplified, but adaptability to different vehicle configurations is reduced
Solution Approach 1:
The patent employs asymmetric design in the harness configuration where the connection part position can be varied (left side or right side) depending on the specific vehicle type. This allows the harness to be optimized for each vehicle configuration while maintaining a standardized modular structure that simplifies the assembly process for each variant
Data Source
AI summary
A wire harness includes: a trunk line section obtained by bundling a plurality of power supply lines serving as wiring bodies wired in a vehicle; a trunk line middle distributor to which a power storage device that is mounted on the vehicle and accumulates electric power is connected, the trunk line middle distributor being interposed between both ends of the trunk line section; and a pair of trunk line end distributors each of which is connected to a corresponding one of both ends of the trunk line section and distributes electric power from the power storage device to each appliance to be connected.