Wire Harness Absorber Mounting to Limit Vibration Wear
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Solution Overview
Problem
Conventional wire harnesses with electromagnetic wave absorbing members experience increased size and vibration, leading to wire damage due to contact with the inner surface of the through hole, especially during vehicle travel.
Innovation Solution
A wire harness design featuring a ring-shaped electromagnetic wave absorber with a through hole and a fixing member that positions the wire to contact the first portion and separate from the second portion, reducing vibration-induced shaking and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the electromagnetic wave absorbing member is increased to reduce larger electromagnetic waves, then the electromagnetic wave absorption effectiveness is improved, but the electromagnetic wave absorbing member vibrates more and causes wire damage
Solution Approach 1:
A buffer member is introduced as an intermediary component between the wire and the electromagnetic wave absorbing member. This buffer member absorbs the vibration and shock from the electromagnetic wave absorbing member, preventing direct contact and damage to the wire while maintaining the electromagnetic wave absorption functionality.
Solution Approach 2:
The buffer member is positioned in advance between the wire and the electromagnetic wave absorbing member to cushion against upcoming vibration and shock. This preemptive cushioning prevents wire damage before it occurs during vehicle travel or electromagnetic wave absorption operations.
2Reliability
If the electromagnetic wave absorbing member is made larger to absorb stronger electromagnetic waves, then the absorption capacity is improved, but the vibration during vehicle travel increases causing wire shaking and wear
Solution Approach 1:
The buffer member serves as a mediator that decouples the wire from the vibration of the electromagnetic wave absorbing member. This allows the electromagnetic wave absorbing member to maintain its large size for absorption capacity while the buffer member isolates the wire from the resulting vibrations during vehicle travel.
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 suppresses wire damage and vibration-induced movement, maintaining the wire's integrity and reducing abnormal noise between the absorber and wire.
Implementation Method 1
electromagnetic wave absorbing members that absorb electromagnetic waves (electromagnetic noise) emitted from the wires
Data Source
AI summary
A wire harness including: a wire; a ring-shaped electromagnetic wave absorber including a through hole through which the wire passes; and a fixing member for fixing the electromagnetic wave absorber to the wire, wherein: an inner circumferential surface of the through hole opposes an outer circumferential surface of the wire, in a view of the electromagnetic wave absorber along a central axis of the through hole, the inner circumferential surface of the through hole has a first portion and a second portion arranged at a position point-symmetrical to the first portion with respect to the central axis of the through hole, and the fixing member fixes the electromagnetic wave absorber to the wire such that the wire is in contact with the first portion and is separated from the second portion.