Adhesive Sheath for Cable Harness Abrasion Protection
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Solution Overview
Problem
Existing methods for wrapping cable harnesses fail to provide adequate protection against mechanical damage from scuffing and rubbing on sharp edges, burrs, and weld points, often requiring costly and complex specialty materials and assembly processes.
Innovation Solution
A method involving a sheath composed of two single-sidedly adhesive tapes laminated with an offset, with the option of a third tape for handling aid, providing a flexible and easily applied wrapping solution that enhances abrasion resistance and soundproofing without the need for additional measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If normal wrapping tapes are used to bandage cable strands, then the cable harness can be wrapped and protected against liquid ingress and insulation, but the protection against abrasion and scuffing on sharp edges is insufficient
Solution Approach 1:
The patent applies composite materials by combining a textile backing layer (providing flexibility and adhesion) with a thermoplastic polyurethane protective film layer (providing high abrasion and scuff resistance). This composite structure delivers both the mechanical protection against sharp edges and the flexibility needed for cable harness wrapping, resolving the contradiction between protection adequacy and material performance.
2Object-affected harmful factors
If specialty adhesive tapes or protective components (cable ducts, fluted tubes, braided hoses) are used to improve abrasion protection, then scuff protection is enhanced, but cost, logistics complexity, and assembly complexity increase significantly
Solution Approach 1:
The patent merges the protective function (abrasion and scuff resistance) with the wrapping function into a single integrated adhesive tape product. The self-adhesive tape combines the protective film layer with an adhesive backing, eliminating the need for separate protective components like cable ducts or fluted tubes. This reduces assembly complexity while maintaining high scuff protection, directly resolving the contradiction between protection enhancement and assembly simplicity.
Solution Approach 2:
The adhesive tape is designed to perform multiple functions simultaneously: it provides abrasion protection, scuff protection, cable harness binding, and flexibility. This multi-functional design replaces the need for multiple separate components (protective tubes, binding materials, etc.), reducing both device complexity and assembly steps while delivering comprehensive protection.
3Object-affected harmful factors
If rigid protective components like fluted tubes and cable ducts are used, then abrasion resistance is improved, but the cable harness becomes less flexible and rattling occurs during vibrations
Solution Approach 1:
The patent uses a flexible thermoplastic polyurethane protective film as the outer layer of the adhesive tape. This flexible film provides high abrasion and scuff resistance while maintaining the flexibility needed for cable harness movement and vibration resistance. The flexible nature of the film prevents rattling during vibrations, directly resolving the contradiction between abrasion resistance and flexibility.
4Object-generated harmful factors
If velour or foam backings are used in adhesive tapes to achieve sound insulation and antirattle function, then noise reduction is improved, but the cost increases significantly and abrasion protection is insufficient
Solution Approach 1:
The patent employs a composite material structure where the thermoplastic polyurethane protective film provides superior abrasion and scuff resistance, while the textile backing layer contributes to sound insulation and vibration damping. This composite approach achieves both high abrasion protection and noise reduction without the high costs associated with velour or foam backings, resolving the contradiction between abrasion protection and noise reduction.
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
The method significantly improves abrasion resistance and scuff protection while maintaining flexibility, reducing noise, and simplifying installation, especially in tight spaces, without the high costs associated with specialty materials.
Implementation Method 1
a sheath (10) composed of a first (1) and a second (2) single-sidedly adhesive tape, the tapes in the running direction each being laminated to one another on the adhesive side with an offset
Data Source
AI summary
A method of wrapping elongate material with a sheath having first and second single-sided adhesive tapes the tapes laminated to one another with an offset, a free edge of the first adhesive tape aligned parallel to the center axis such that, relative to the center axis of the material, the adhesive of the first adhesive tape lies outwards, the first adhesive tape of the sheath guided by the free edge onto the material, and wound around the material so that the first adhesive tape essentially completely envelopes the material, the second adhesive tape also wound around the material, the exposed adhesive of the second adhesive tape bonding to the exposed adhesive of the first adhesive tape, so that the material is surrounded by at least two plies of adhesive tape.