Noise Current Absorber Holder With Bidirectional Release Mechanism

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Solution Overview

Problem

Existing noise current absorbers for electric wires are difficult to detach due to engagement structures that can only be released from a specific direction, making it challenging when the device is positioned deeply within equipment or surrounded by complex structures, and some designs fail to release engagement even when oriented correctly.

Innovation Solution

A holder with through holes allowing insertion from either end, featuring elastically deformable engaging and engaged portions, locking claws, and a bridge mechanism that enables release from either direction, along with a restricting portion to prevent excessive displacement and maintain relative positions for smooth operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an engagement structure with a specified release direction is used, then the engagement can be released from the specified direction, but it cannot be released from the opposite direction when the noise current absorber is attached in certain orientations

Engineering Contradiction:
Improveease of detachmentVSAvoidadaptability to different orientations
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent applies inversion by creating a through hole that allows the jig to be inserted from either direction (specified or opposite). The engaging portion and engaged portion are designed symmetrically with the through hole penetrating both ends, enabling the release operation to be performed from any orientation, thus resolving the contradiction between ease of operation and adaptability to different orientations.

Inventive Principle:
Principle #13The other way round (Inversion)

2Object-affected harmful factors

If the noise current absorber is attached to a position deep inside equipment or surrounded by various structures, then it provides effective noise absorption, but the engagement cannot be released due to limited access for operation

Engineering Contradiction:
Improvenoise absorption effectivenessVSAvoidease of detachment
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The through hole design allows the jig to be inserted from either end, providing flexibility in access direction. This enables operators to release the engagement from positions that would otherwise be inaccessible, resolving the contradiction between maintaining effective noise absorption at difficult-to-reach positions and enabling easy detachment.

Inventive Principle:
Principle #13The other way round (Inversion)

3Adaptability or versatility

If two pairs of engagement structures are provided, then one may allow release from specified direction while the other from opposite direction, but the noise current absorber still cannot be detached when orientations are mismatched

Engineering Contradiction:
Improveengagement structure coverageVSAvoidease of detachment
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent merges the functionality of multiple engagement structures into a single through hole design. Instead of having separate engagement structures with different release directions, the through hole integrates both access paths (specified and opposite directions) into one unified structure, allowing both engagement pairs to be released from either direction, thus resolving the orientation mismatch problem.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables easy detachment of the noise current absorber from electric wires by allowing engagement release from either specified or opposite directions, preventing misalignment and unnecessary twisting, thus facilitating operation and reducing operational difficulty.

Implementation Method 1

When the jig inserted in the through hole is used for applying the external force to the engaging portion or the engaged portion, the engaging portion or the engaged portion is elastically deformed, and thus the engagement is released.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

the pair of magnetic bodies in the cylindrical shape surrounds the electric wire from an outer peripheral side. As a result, the pair of magnetic bodies magnetically forms a closed magnetic path and exerts intended noise current absorbing capacity

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentEP3032931B1Holder and noise current absorber
Publication Date: 2019.01.30 KITAGAWA INDS
  • EP3032931B1 patent drawingFigure 1A~1C
  • EP3032931B1 patent drawingFigure 2A~2D
  • EP3032931B1 patent drawingFigure 3A~3B

AI summary

A holder for a noise current absorber in one aspect of the invention comprises a pair of accommodating portions, and one or more pairs of an engaging portion and an engaged portion. The accommodating portion accommodates a magnetic body. The engaging portion and the engaged portion are engaged with each other and maintain a state that a pair of the magnetic bodies exhibits a cylindrical shape or an annular shape. The engaging portion and the engaged portion form a through hole that penetrates in an insertion direction of the engaging portion. When at least one of the engaging portion and the engaged portion is elastically deformed by using a jig inserted in the through hole, engagement between the engaging portion and the engaged portion is released.