Loose Hose Combination for Electromagnetic Shielding
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Solution Overview
Problem
Hose combinations for protecting electrical cables in confined spaces, such as engine compartments of motor vehicles, face difficulties in bending and maintaining electromagnetic shielding due to interlocking arrangements.
Innovation Solution
The radially inner hose is loosely arranged within the radially outer hose, with an electrically conductive layer protected by a stabilizing layer, allowing for easy bending and enhanced electromagnetic shielding, and includes features like overlapping edges for improved electrical contact and a noise-damping material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the radially outer hose and the radially inner hose are arranged in an interlocking arrangement, then mechanical protection and stability are improved, but the hose combination becomes difficult to bend and adapt to confined spaces
Solution Approach 1:
The hose combination is segmented into a radially outer hose and a radially inner hose that are loosely arranged relative to each other, allowing independent movement and bending of each hose segment while maintaining overall structural integrity and mechanical protection
Solution Approach 2:
The loose arrangement between the outer and inner hoses creates a dynamic structure where the hoses can move and bend independently, adapting to confined spaces and installation requirements while the outer hose continues to provide mechanical protection
2Object-affected harmful factors
If the electrically conductive layer is made with sufficient thickness (at least 20 μm) to achieve adequate electromagnetic shielding, then electromagnetic shielding effectiveness is improved, but the conductive layer becomes highly susceptible to damage such as tearing
Solution Approach 1:
The electrically conductive layer is combined with a stabilizing layer to form a composite structure, where the conductive layer provides electromagnetic shielding and the stabilizing layer provides mechanical strength and damage resistance, creating a material composite that achieves both shielding effectiveness and reliability
Solution Approach 2:
The electrically conductive layer is nested within or alongside the stabilizing layer, with the stabilizing layer surrounding and protecting the conductive layer from external mechanical influences, allowing the thin conductive layer to maintain its shielding function without being damaged
3Reliability
If the electrically conductive layer is bonded to a stabilizing layer to prevent damage, then mechanical stability and damage resistance are improved, but electrical contactability of the conductive layer becomes more difficult to achieve
Solution Approach 1:
An intermediary layer or structure is introduced between the stabilizing layer and the electrically conductive layer to facilitate electrical contact, allowing the stabilizing layer to provide mechanical protection while the intermediary enables electrical connectivity without direct bonding between the stabilizing layer and conductive layer
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 solution enables flexible hose combinations with robust electromagnetic shielding, suitable for confined spaces, while maintaining mechanical protection and reducing damage risk to the conductive layer.
Implementation Method 1
a hose combination (100) with electromagnetic shielding, wherein the hose combination (100) comprises a radially outer hose (102) and a radially inner hose (104), wherein the radially inner hose (104) is arranged loosely within the radially outer hose (102), wherein at least the radially inner hose (104) has at least one electrically conductive layer
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The invention relates to a hose combination (100) with an electromagnetic shield, comprising a radially inner hose (104) and a radially outer hose (102), at least one of the two hoses (102, 106) having at least one electrically conductive layer (106) and the radially inner hose (104) being loosely or detachably accommodated in the radially outer hose (102). The invention also relates to a hose (104) with an electromagnetic shield, and the use of a hose combination (100) according to the invention.