Wire Harness Support Structure for Bolt Position Tolerance
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Solution Overview
Problem
Conventional wire harness support members have limited flexibility, making it difficult to handle large position tolerances of bolts due to reduced rigidity when attempting to increase the range of movement through flexing, which restricts the absorption of positional deviations.
Innovation Solution
A wire harness support member design featuring a separate bolt fixing member with a groove portion and insertion portion that allows for increased movement along the groove's length, combined with pinching pieces to secure the bolt, enabling effective absorption of positional tolerances without compromising rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the length of the flexible portion is increased to increase the movement range of the bolt fixing portion, then the range of movement is improved, but the rigidity of the flexible portion is reduced
Solution Approach 1:
The invention divides the support member into a main body portion and a separate bolt fixing member, connected through a groove portion and insertion portion structure. This segmentation allows the bolt fixing member to move independently along the groove while maintaining the rigidity of both the main body and the bolt fixing member as separate components, resolving the contradiction between movement range and rigidity.
2Adaptability or versatility
If a flexible portion is used to absorb position tolerance of the bolt, then the position tolerance handling is improved, but the range of movement is limited due to reduced rigidity
Solution Approach 1:
By separating the bolt fixing member from the main body and connecting them through a groove-insertion structure, the invention enables the bolt fixing member to move along the groove to accommodate position tolerances, while the separate component structure maintains sufficient rigidity for practical movement ranges.
Solution Approach 2:
The groove portion acts as an intermediary structure that enables controlled movement between the main body and the bolt fixing member. This intermediary mechanism allows the system to absorb position tolerances effectively while maintaining the rigidity needed for adequate movement range.
Data Source
AI summary
An aspect of the present disclosure provides a wire harness support member that makes it easier to increase the range in which a position tolerance of a bolt can be handled. A support member according to one aspect of the present disclosure includes: a main body portion that includes a holding portion for holding an electric wire; and a bolt fixing member that is a separate member from the main body portion. The bold fixing member includes a fixing hole into which a bolt provided on a vehicle body side is inserted and fixed, and an insertion portion serving as a supported portion. The main body portion includes a groove portion that is formed along a direction that intersects an axial direction of the bolt (height direction), and the groove portion movably supports the insertion portion in the length direction of the groove portion (height direction).