Noise Suppression Member with Multi-Point Cable Restraining
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Solution Overview
Problem
Conventional noise suppression members fail to ensure adequate contact between cables and the inner peripheral surface of magnetic cores, leading to suboptimal impedance characteristics and electromagnetic wave countermeasures.
Innovation Solution
A noise suppression member comprising multiple annular-shaped magnetic cores housed in a case with an engagement mechanism and a restraining member, such as a binding band, that securely contacts the cable on both sides between magnetic cores, enhancing contact with the inner periphery and improving impedance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single cable fastener is disposed at a position separated from between both ends in an axial direction of the magnetic core, then the noise suppression member can be assembled, but the cable cannot be brought into sufficient contact with the inner peripheral surface of the magnetic core on both sides
Solution Approach 1:
The cable fastening system is divided into multiple segments: a first cable fastener disposed near the first end of the magnetic core and a second cable fastener disposed near the second end. This segmentation allows the cable to be restrained and brought into contact with the inner peripheral surface at multiple locations, resolving the contradiction by improving contact quality without requiring a single complex fastening mechanism
Solution Approach 2:
The solution transitions from a single-point fastening approach to a distributed multi-point fastening approach along the axial dimension. By placing cable fasteners at different positions along the axial direction, the system achieves comprehensive cable contact with the magnetic core's inner peripheral surface, effectively resolving the contact insufficiency issue
2Reliability
If the cable is disposed at a position biased against the center of the magnetic core, then impedance characteristics are improved, but the cable cannot be caused to make sufficient contact with the inner peripheral surface across the entire range
Solution Approach 1:
The contact interface is segmented into multiple zones along the axial direction, with each cable fastener creating a contact zone near its position. This allows the cable to maintain biased positioning for impedance improvement while ensuring sufficient contact area through distributed contact points across the magnetic core's inner peripheral surface
Solution Approach 2:
The cable fastening system creates localized contact zones at specific axial positions rather than requiring uniform contact across the entire surface. This allows the cable to be biased off-center for optimal impedance characteristics while still achieving adequate contact quality at the localized fastener positions
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 ensures better contact between the cable and the magnetic cores across a greater range, enhancing impedance characteristics and the effectiveness of electromagnetic wave countermeasures.
Implementation Method 1
a magnetic core constituted by a pair of split cores being brought into contact so as to form an annular shape
Implementation Method 2
to attenuate noise current
Data Source
AI summary
A noise suppression member comprising: a plurality of magnetic cores, and a case for arranging and housing the plurality of magnetic cores; the noise suppression member being configured such that a restraining member can be attached, the restraining member restraining a cable in a state of contact with an inner periphery of the plurality of magnetic cores at a location between an adjacent two of the plurality of magnetic cores, by coming into contact with the cable passing through an inner peripheral side of the plurality of magnetic core.