Wire Harness Anchor Structure for Easier Vehicle Routing
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Solution Overview
Problem
Conventional wire harnesses face challenges in workability during routing to vehicles, necessitating improvements in fixing and routing processes.
Innovation Solution
A wire harness design featuring a molded member with an elastically deformable anchor portion that can be inserted into a fixing recess, providing secure fixation and improved routing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional wire harness design is used, then manufacturing is simpler, but workability during routing to vehicle is insufficient
Solution Approach 1:
The molded member is segmented into functionally distinct portions: a main body portion for covering and protecting the wire harness, and an anchor portion for fixation to the vehicle. This segmentation allows each portion to be optimized for its specific function, improving routing workability while maintaining manageable overall complexity.
Solution Approach 2:
The anchor portion is designed with elastic deformability, allowing it to dynamically adapt during installation. The anchor can be elastically deformed to fit into the fixing recess and then returns to its original shape to provide secure fixation, enhancing ease of operation during routing while using a relatively simple integrated structure.
2Strength
If the anchor portion is made rigid, then fixation strength is higher, but insertion into fixing recess becomes difficult
Solution Approach 1:
The anchor portion transitions from a rigid state during fixation to a deformable state during insertion. The elastic deformability allows temporary softening for easy insertion into the fixing recess, followed by recovery to a rigid state for strong fixation, thus resolving the contradiction between insertion ease and fixation strength.
Solution Approach 2:
The physical parameter of the anchor portion (rigidity) is changed temporarily during the insertion process. The anchor is designed to exhibit different rigidity states: deformable during insertion and rigid during fixation. This parameter change enables both easy insertion and strong fixation without compromising either requirement.
3Reliability
If multiple separate fixing components are used, then fixation reliability is higher, but assembly complexity increases
Solution Approach 1:
The main body portion and anchor portion are merged into a single integrated molded member. This merging maintains fixation reliability through the functional integration of covering and anchoring, while reducing assembly complexity by eliminating the need for separate fixing components. The single molded member can be installed as one unit, simplifying the assembly process.
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
Enhances workability by allowing secure routing and fixation to vehicle surfaces with reduced assembly steps, facilitating automated manufacturing and maintaining the harness's position even under external forces.
Implementation Method 1
an anchor portion that is formed in a plate shape so as to be elastically deformable in a plate thickness direction and is able to be inserted into and fixed to a fixing recess
Data Source
AI summary
A wire harness includes: a wiring member having conductivity; and a molded member provided integrally with the wiring member so as to cover the wiring member. The molded member includes: a main body portion covering an outer side of the wiring member; and an anchor portion that is formed in a plate shape so as to be elastically deformable in a plate thickness direction and is able to be inserted into and fixed to a fixing recess formed in a fixing target portion. With this configuration, the wire harness has an effect of achieving appropriate routing.