Wire Harness Bolt Fixing Structure to Prevent Spring Piece Damage
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Solution Overview
Problem
The existing wire harness fixing members are prone to damage during shipping and assembly due to the distal ends of the spring pieces catching on objects, leading to potential deformation or breakage of the biasing parts.
Innovation Solution
The wire harness design incorporates a biasing part with a pair of elastic pieces that incline to approach each other, with their distal ends facing each other, and an optional connecting part to improve rigidity and prevent catching, and an elastic portion with a circular arc shape to apply force effectively, ensuring the biasing part is securely attached to the side surface, thus preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the distal ends of the spring pieces are extended away from the side surface to provide biasing force, then the biasing function is improved, but the spring pieces become prone to catching on objects and getting damaged
Solution Approach 1:
Instead of extending the distal ends away from the side surface, the patent inverts the configuration by having the distal ends face each other and be positioned closer to the side surface. This reversal of the conventional design eliminates the catching problem while maintaining the biasing function through the elastic deformation of the pieces between their connection ends and distal ends.
Solution Approach 2:
The pair of elastic pieces are positioned nested between the side surface and the engagement, with their distal ends facing each other. This nested arrangement protects the distal ends from exposure to external objects that could cause catching, while still allowing the pieces to elastically deform and apply biasing force to the panel.
2Stability of the object's composition
If the elastic pieces are made more rigid to improve structural stability, then the biasing force application becomes more reliable, but the ability of the pieces to flex and engage properly is reduced
Solution Approach 1:
The patent applies local quality by creating different structural characteristics in different portions of the elastic pieces. The connection ends are securely joined to the side surface providing stability, while the intermediate portions maintain elastic flexibility for proper engagement, and the distal ends are positioned to face each other for protection. This localized differentiation of structural properties resolves the contradiction between rigidity and flexibility.
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
This configuration effectively inhibits damage to the biasing part by preventing catching and improving the rigidity of the elastic pieces, ensuring reliable operation during shipping and assembly.
Implementation Method 1
the biasing part has a pair of elastic pieces extending from the side surface, and the pair of elastic pieces incline so as to approach each other proceeding away from the side surface
Data Source
AI summary
A wire harness including: an electrical wire; and a fixing member that fixes the electrical wire to an attachment target, wherein: the fixing member has: a bolt fixing portion to be fixed to a bolt of the attachment target; and a holder that holds the electrical wire, the bolt fixing portion includes: a side surface that opposes the attachment target; a bolt insertion opening provided in the side surface and into which the bolt is to be inserted; an engagement that engages, in an axial direction, the bolt inserted into the bolt fixing portion through the bolt insertion opening; and a biasing part that is provided on the side surface and comes into contact with the attachment target.