Sheathed Wire Harness with Movable Resin Cloth Cover
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Solution Overview
Problem
Conventional sheathed wire harnesses with corrugated tubes made of hard synthetic resin are difficult to move freely, making it challenging to connect and disconnect connectors, and when sound-reducing materials are used, the wire harness becomes thick, complicating installation in narrow spaces.
Innovation Solution
A sheathed wire harness with a fibrous resin cloth that can be moved to cover or expose the electric wire connector area, featuring a flexible cover portion that can be held in place using hook-and-loop fasteners, allowing for easier connector operation while protecting the wire and reducing vibration-induced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hard synthetic resin corrugated tube is used to sheath the wire harness, then the electric wire is protected, but the wire harness becomes difficult to move freely, making connector connection difficult
Solution Approach 1:
The cover portion is segmented from the tubular portion, allowing the cover to be movable relative to the tubular portion. This segmentation enables the cover to be opened for connector connection while the tubular portion remains as protective sheathing for the wire harness.
Solution Approach 2:
The cover portion is designed to be movable between an open position (for connector connection) and a closed position (for wire protection). This dynamic design allows the system to switch between protection mode and operation mode, resolving the contradiction between wire protection and connector connection ease.
2Object-affected harmful factors
If a sound-reducing material is wound around the electric wire, then vibration-induced hitting sounds are reduced, but the wire harness becomes thick, making it difficult to arrange in narrow spaces
Solution Approach 1:
The material properties of the cover portion are changed to provide sound-absorbing characteristics. By selecting a resin cloth material with inherent sound-absorbing properties, the patent achieves hitting sound reduction without adding separate sound-reducing materials that would increase thickness.
Solution Approach 2:
The cover portion serves multiple functions simultaneously: it protects the electric wire from damage, absorbs vibration-induced hitting sounds, and maintains a compact profile suitable for narrow spaces. This multi-functionality resolves the contradiction between sound reduction and space efficiency.
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
Facilitates connector connection and disconnection while protecting the electric wire and connector, and reduces noise from vibrations through sound-absorbing properties, improving workability and space efficiency.
Implementation Method 1
the resin cloth includes a holding portion with which the cover portion can be held in the closed position and released therefrom
Implementation Method 2
hitting sounds generated by the vibration of the electric wire can be reduced due to the sound absorbing property of the resin cloth
Implementation Method 3
the sound absorbing property of the resin cloth
Data Source
AI summary
A sheathed wire harness includes connectors to be fitted to counterpart connectors, electric wires connected to the connectors, and a fibrous resin cloth that is connected to the electric wires and surrounds the electric wires. The resin cloth includes a cover portion that can be moved to a closed position in which portions of the electric wires near the connectors are covered, and moved to an open position in which the portions of the electric wires near the connectors are exposed.