Wiring Member Adhesive Interface for Strong Fixation and Clean Detachment
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Solution Overview
Problem
Existing wire harnesses face challenges in being effectively attached and fixed to adherends using double-sided adhesive members, as the adhesive force is not sufficient to ensure strong fixation.
Innovation Solution
A wiring member design that includes a wire-like transmission member, a fixing sheet, an intervention sheet with a higher adhesive force contact surface for the double-sided adhesive member, and a configuration where the intervention sheet is fixed to the fixing sheet, enhancing the adhesive strength by increasing the effective contact area and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a wire harness is attached to an adherend using a double-sided adhesive member directly on the fixing sheet, then the attachment process is simple, but the adhesive force is insufficient to ensure strong fixation
Solution Approach 1:
The patent applies composite materials by creating a multi-layer structure consisting of a fixing sheet, an intervention sheet, and a double-sided adhesive member. The intervention sheet serves as an intermediate layer with specific surface properties that enhance adhesive bonding. This composite structure combines different materials (fixing sheet material, intervention sheet material, and adhesive material) to achieve superior adhesive force compared to using a single material layer, directly resolving the contradiction between strong fixation and structural simplicity.
Solution Approach 2:
The intervention sheet acts as an intermediary between the fixing sheet and the double-sided adhesive member. This intermediate layer improves the adhesive bonding by providing a surface with optimal properties for adhesive attachment. The intervention sheet mediates the interaction between the fixing sheet and adhesive, enabling stronger fixation without requiring complex structural modifications to the original wire harness design.
2Reliability
If the adhesive force is increased to ensure strong fixation, then the fixation reliability improves, but the detachment process becomes difficult and may damage the fixing sheet or intervention sheet
Solution Approach 1:
The patent applies local quality by differentiating the adhesive properties at different interfaces of the multi-layer structure. The intervention sheet has specific surface characteristics that provide strong adhesive bonding to the double-sided adhesive member while maintaining controlled detachment properties. This localized variation in surface quality enables strong fixation during use while allowing clean detachment when needed, resolving the contradiction between fixation reliability and ease of repair.
Solution Approach 2:
The intervention sheet is designed to enable recovery of the fixing sheet and intervention sheet after detachment. The structure allows the double-sided adhesive member to be removed along with the intervention sheet, leaving the fixing sheet intact and reusable. This design principle of discarding the adhesive layer and intervention sheet while recovering the structural components resolves the contradiction between strong fixation and ease of repair by enabling component reuse.
3Strength
If the contact area between the adhesive member and the fixing sheet is increased to improve adhesive force, then the fixation strength improves, but the effective contact area may be reduced due to surface irregularities
Solution Approach 1:
The patent applies this principle by using the intervention sheet as a disposable intermediate layer that can be easily replaced. The intervention sheet provides a fresh, uniform surface for adhesive bonding, ensuring maximum effective contact area. Even if the intervention sheet becomes compromised after detachment and reuse, it can be replaced with a new one, maintaining optimal adhesive contact area and strength without requiring complex surface preparation of the fixing sheet.
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 design allows for a stronger and more reliable attachment and fixation of the wiring member to adherends using double-sided adhesive members, maintaining the wiring member's shape and facilitating easy detachment without damaging the fixing sheet or intervention sheet, thus enabling reuse.
Implementation Method 1
adhesive force between the first contact surface and the double-sided adhesive member is larger than adhesive force between the second contact surface and the double-sided adhesive member
Data Source
AI summary
A wiring member includes: a wire-like transmission member; a fixing sheet having one main surface to which the wire-like transmission member is fixed; an intervention sheet fixed to the fixing sheet and having a first contact surface; and a double-sided adhesive member attached to the first contact surface, wherein when a surface of the fixing sheet having contact with the intervention sheet is a second contact surface, adhesive force between the first contact surface and the double-sided adhesive member is larger than adhesive force between the second contact surface and the double-sided adhesive member.