Wire Harness Bolt Fixing Structure for Stable Lock Ring Engagement
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Solution Overview
Problem
The existing wire harness fixing mechanism is prone to unstable locking between the locking pieces and the bolt, leading to potential detachment of the fixing member due to displacement of the wire harness path, which affects the secure fixation of the fixing member to the bolt.
Innovation Solution
The wire harness incorporates a bolt fixed portion with a lock ring that is movable orthogonally to the bolt axis, featuring a movement restrictor to prevent axial relative movement, ensuring stable locking even with positional displacement between the fixing member and the bolt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking pieces are pushed by the bolt to bend away from each other during insertion, then the bolt can be inserted into the fixing member, but the locking between the locking pieces and the bolt becomes unstable when the wire harness path is displaced
Solution Approach 1:
The locking pieces are designed to be elastic and movable, allowing them to dynamically adapt to positional displacements. The locking pieces can bend away from each other during insertion and then return to their original position through elastic recovery, maintaining stable locking even when the wire harness path is displaced.
Solution Approach 2:
The locking pieces utilize elastic deformation as a parameter change mechanism. During insertion, the locking pieces change their shape parameter by bending away from each other. After insertion, they recover their original shape through elastic force, ensuring stable locking. This parameter change allows the locking mechanism to accommodate positional variations.
2Ease of operation
If the locking pieces are made elastic to enable insertion, then the bolt can be inserted into the fixing member, but the locking pieces may no longer be able to lock to the bolt when positional displacement occurs
Solution Approach 1:
The locking pieces are designed to be elastic and movable, allowing them to dynamically adapt to positional displacements. The locking pieces can bend away from each other during insertion and then return to their original position through elastic recovery, maintaining stable locking even when the wire harness path is displaced.
Solution Approach 2:
The elastic design of the locking pieces provides a cushioning effect that absorbs positional displacement variations. The elasticity allows the locking pieces to accommodate unexpected positional shifts without losing locking capability, effectively cushioning against potential locking failures.
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 stabilizes the fixing of the fixing member to the bolt by allowing relative movement in orthogonal directions, maintaining secure attachment despite positional changes, thereby preventing detachment and ensuring reliable fixation.
Implementation Method 1
the lock ring is configured to be movable in the insertion hole in a direction orthogonal to an axis of the bolt
Implementation Method 2
the insertion hole includes a movement restrictor for restricting relative movement of the lock ring in the axial direction of the bolt
Implementation Method 3
a lock ring fixed to the bolt by locking, in an axial direction, to a threaded portion of the bolt disposed in the insertion hole
Data Source
AI summary
A wire harness, including: an electric wire; and a fixing member for fixing the electric wire to an attachment object, wherein: the fixing member includes a bolt fixed portion that is fixed to a bolt included in the attachment object and a holder for holding the electric wire, the bolt fixed portion includes a fixed portion main body having an insertion hole into which the bolt is inserted and a lock ring fixed to the bolt by locking, in an axial direction, to a threaded portion of the bolt disposed in the insertion hole, the insertion hole includes a movement restrictor for restricting relative movement of the lock ring in the axial direction of the bolt, and the lock ring is configured to be movable in the insertion hole in a direction orthogonal to an axis of the bolt.