Shielded Electric Wire Connection Structure with Segmented Braided Shield
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Solution Overview
Problem
Existing shielded electric wire connecting structures face challenges in bending directionality and increased costs due to the arrangement of braided shield components around collective electric wire members, which hampers work efficiency and flexibility in installation.
Innovation Solution
A shielded electric wire connecting structure where electric wires are bent from a position directly below an upper case to a position opposed to its wall surface, with a braided shield component placed only on the opposite side of the electric wires, allowing for easier bending and reduced braided shield component area, thereby improving installation efficiency and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the braided shield component is arranged around the collective electric wire member to form a shield structure, then electromagnetic wave shielding is improved, but the shielded electric wire component cannot be bent along a desired direction
Solution Approach 1:
The braided shield component is divided into multiple independent strips rather than forming a complete circular sleeve. Each strip can be independently positioned and attached to specific sides of the electric wire bundle, segmenting the continuous shielding structure into discrete, flexible segments that do not restrict bending motion.
Solution Approach 2:
Instead of providing uniform 360-degree shielding around the electric wire member, the braided shield strips are selectively positioned only on specific sides where electromagnetic shielding is most needed. This localised approach maintains shielding effectiveness in critical areas while leaving other areas open for bending flexibility.
2Object-affected harmful factors
If the circumferences of a plurality of electric wires are collectively covered by the braided shield component, then electromagnetic wave shielding is improved, but the area of the braided shield component is increased and it becomes difficult to bend
Solution Approach 1:
The shield component is segmented into multiple narrow strips rather than one wide continuous covering. This segmentation reduces the total material area required while maintaining shielding effectiveness through strategic positioning of each strip on specific sides of the electric wire bundle.
Solution Approach 2:
Instead of providing complete circumferential shielding, the invention uses partial shielding with strips positioned only where needed. This partial action approach achieves sufficient electromagnetic wave blocking in critical directions while significantly reducing the total area of braided shield material required.
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 structure enables improved work efficiency in installation and reduced costs by allowing the shielded electric wire component to be easily bent along a desired direction and minimizing the braided shield component area, while maintaining effective electromagnetic wave shielding.
Implementation Method 1
a braided shield component that is placed to shield the plurality of electric wires
Data Source
Figure 1A~1B
Figure 2
Figure 3A
AI summary
The electric shielded wire connection structure includes: a lower side case that accommodates a rotary electric machine; an upper side case that is positioned immediately above, and facing, the lower side case and accommodates an inverter; a plurality of electric wires that is arranged in a state where one end thereof is connected to a lower side terminal block immediately under the upper side case, the other end thereof is connected to an upper side terminal block at a wall surface side end part of the upper side case, and the plurality of electric wires is bent from the position immediately under the upper side case so as to face the wall surface; and a braided shielding member that shields the plurality of electric wires and is arranged for the plurality of electric wires only at the side opposite to the surface facing the upper side case.