Wire Harness Shift Correction Tubular Exterior
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The hard exterior member of existing wire harnesses makes it difficult to attach and fix the harness to a vehicle due to positional shifts between clamps and stud bolts, particularly when three fixation points are involved, affecting workability.
Innovation Solution
A wire harness with a tubular exterior member featuring bent and straight route portions, including a shift correction portion that allows the third straight tubular portion to displace relative to the first and second straight tubular portions in a perpendicular axial direction, absorbing positional shifts and ensuring easy attachment and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hard exterior member is used to protect the conductive path, then protection reliability is improved, but attachment workability deteriorates due to inability to absorb positional shifts
Solution Approach 1:
The straight route portion is segmented into multiple straight tubular portions (first, second, and third) connected by shift correction portions. This segmentation allows each segment to be relatively independent, with the third straight tubular portion able to displace relative to the first and second portions, absorbing positional shifts while maintaining overall structural integrity and protection capability.
Solution Approach 2:
The exterior member transitions from a completely rigid structure to a dynamic structure with controlled flexibility. The shift correction portions enable the third straight tubular portion to displace dynamically in the perpendicular axial direction, allowing the hard exterior member to adapt to positional shifts during attachment while maintaining its protective function.
2Stability of the object's composition
If the exterior member is made rigid for structural stability, then structural stability is improved, but adaptability to positional shifts deteriorates
Solution Approach 1:
Different portions of the exterior member have different mechanical properties. The first and second straight tubular portions maintain high rigidity for structural stability, while the shift correction portions are designed with controlled flexibility to enable displacement. This local differentiation of quality allows the structure to be stable where needed and adaptable where required.
Solution Approach 2:
The exterior member is divided into rigid segments (first and second straight tubular portions) and flexible connection segments (shift correction portions). This segmentation allows the rigid portions to provide structural stability while the flexible portions provide adaptability to positional shifts, resolving the contradiction between stability and adaptability.
3Reliability
If multiple fixation points are used to secure the wire harness, then fixation reliability is improved, but attachment complexity increases when positional shifts occur
Solution Approach 1:
The shift correction portions enable the third straight tubular portion to displace dynamically, automatically compensating for positional shifts at fixation points. This dynamic adjustment simplifies the attachment process by eliminating the need for precise alignment, allowing multiple fixation points to be used effectively without increasing attachment complexity.
Solution Approach 2:
The shift correction portions are designed in advance to provide displacement capability, cushioning against the potential problem of positional shifts before they affect the attachment process. This beforehand cushioning ensures that even with multiple fixation points, the attachment remains straightforward as the structure can accommodate shifts without requiring complex adjustment procedures.
Data Source
AI summary
A wire harness includes a conductive path and an exterior member with a tubular shape which covers the conductive path. The exterior member includes a bent route portion and a straight route portion with a straight shape. The straight route portion includes a first straight tubular portion; a second straight tubular portion; a third straight tubular portion that is disposed between the first straight tubular portion and the second straight tubular portion; and a shift correction portion that allows the third straight tubular portion to be displaced relative to the first straight tubular portion and the second straight tubular portion in a perpendicular axial direction of the straight route portion.