Wire Harness Protrusions for Adjustable Clamp Positioning
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Solution Overview
Problem
Existing wire harness attachment structures face challenges in adjusting the attachment position of clamps and achieving a balance between maintaining shape rigidity and minimizing weight, particularly in long wire harnesses with thin flexible sections and thick straight sections.
Innovation Solution
The attachment structure features multiple protrusions on the outer surface of the straight tube section, arranged in rows with adjustable pitches and shifted positions, allowing for flexible adjustment of the clamp's attachment position and increased rigidity through the use of a clamp with an annular wall that can be inserted between the protrusions at various positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the straight tube section is increased in thickness to increase rigidity, then the shape is maintained better, but the weight is increased
Solution Approach 1:
The patent applies local quality by forming multiple protrusions only in the straight tube section where rigidity is needed, while keeping the flexible tube section thin and bendable. The protrusions are arranged in specific patterns (rows with predetermined pitches) to provide localized structural reinforcement without increasing the overall wall thickness of the exterior member, thus maintaining rigidity where needed while preserving lightweight characteristics elsewhere.
2Ease of operation
If the attachment position is determined by a fixed configuration, then the attachment-detachment portion is easily identified, but the attachment position cannot be changed
Solution Approach 1:
The patent applies dynamics by transforming the static, fixed attachment position into a dynamic, adjustable system. The multiple protrusions are arranged in rows with predetermined pitches, allowing the clamp to be attached at various positions along the straight tube section. The attachment-detachment portion is indicated by the spacing between protrusions, providing visual guidance while enabling position changes to accommodate different wiring configurations.
3Length of moving object
If the straight tube section is made elongated to accommodate long wire harnesses, then the wiring coverage is improved, but the resin molding constraints are increased
Solution Approach 1:
The patent applies segmentation by dividing the straight tube section into multiple segments defined by the protrusions arranged in rows. This segmentation allows the long exterior member to be molded in a standardized manner while providing multiple attachment positions along its length. The protrusions create natural segmentation points that facilitate both manufacturing and installation flexibility.
Data Source
AI summary
An attachment structure between an exterior member and a posterior attaching component to be attached to the exterior member includes: the exterior member that has a tube body shape and is included in a wire harness that has one or a plurality of conductive paths, the exterior member covering the conductive path. The exterior member includes a straight tube section that has a straight shape and is an attachment target section of the posterior attaching component. Multiple protrusions are formed on an outer surface of the straight tube section and include a plurality of protrusion groups arranged in rows, each of the plurality of protrusion groups includes the protrusions arranged at predetermined pitches in a tube axial direction, and the multiple protrusions are configured to be inserted into an annular wall of the posterior attaching component.