Shielded Wire Harness With Conductive Pipe And Coated Braid
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shielded wire harnesses for vehicles, particularly electric vehicles, face challenges in enhancing shielding properties and sealability while maintaining lightweight and flexible designs that can withstand heat and external interactions.
Innovation Solution
A shielded wire harness featuring a conductive pipe main shield portion and a deformable sub-shield portion with a braided member coated with an elastomer, providing both effective electromagnetic shielding and fluid-tightness, and allowing for easy installation and vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a braided shielding structure is used, then electromagnetic shielding properties are improved, but fluid-tightness and sealability deteriorate
Solution Approach 1:
The patent combines a braided shielding structure with a coating layer to create a composite structure. The braided portion provides electromagnetic shielding while the coating layer applied over the braid restores fluid-tightness, resolving the contradiction between shielding performance and sealability.
2Strength
If a rigid conductive pipe is used for the main shield portion, then protection against external impacts and heat is improved, but flexibility and ease of installation deteriorate
Solution Approach 1:
The shielding member is divided into two distinct portions: a rigid main shield portion (conductive pipe) that provides impact and heat protection, and a flexible sub-shield portion (braided structure) that provides ease of installation and adaptability. This segmentation allows each portion to optimize its specific function without compromise.
3Object-affected harmful factors
If individual shielding is applied to each wire, then electromagnetic shielding is improved, but weight and device complexity increase
Solution Approach 1:
Instead of applying separate shielding to each individual wire, the patent merges multiple wires into a single bundled configuration and applies a collective shielding structure (the shielding member) that encloses all wires together. This approach maintains electromagnetic shielding effectiveness while significantly reducing overall weight and structural complexity compared to individual wire shielding.
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 enhances electromagnetic shielding, sealability, and flexibility, enabling the wire harness to be easily integrated into vehicle chassis designs, protecting against heat, external impacts, and vibrations while reducing weight and part count.
Implementation Method 1
a sub-shield portion (54) connected to the conductive pipe (51) and the shielded connector (58), and comprising a braided member (52) being at least partly covered by or formed with a coating (53)
Implementation Method 2
a coating (53) which provides fluid-tightness or sealability when the sub-shield portion (54) is connected to the conductive pipe (51) and the shielded connector (58)
Implementation Method 3
the sub-shield portion (54) can accommodate for size tolerances. Furthermore, the deformable sub-shield portion (54) can adsorb vibrations and thus suppress vibration propagation between components of the vehicle
Data Source
AI summary
A shielded wire harness has one or more of wires (30); a shielded connector (58) with one or more terminals (40) connected respectively to the wires (30), and configured to be connected to a mating connector (12); and a substantially tubular shielding member (50) configured to collectively enclose the wires (30) and to be connected to the shielded connector (58). The shielding member (50) has a main shield portion (51) made of a conductive pipe (51), and a sub-shield portion (54) connected to the conductive pipe (51) and the shielded connector (58). The sub-shield portion (54) has a braided member (52) at least partly covered by a coating (53) that provides fluid-tightness when the sub-shield portion (54) is connected to the conductive pipe (51) and the shielded connector (58). A corresponding shielding member and manufacturing method are provided.