Magnetoelectric Generator Coil Fixation Vibration

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Solution Overview

Problem

Conventional magnetoelectric generator manufacturing is time-consuming due to the two-stage heat-hardening process of the fixing material, and irregularities in fixing output wires lead to instability and vibration issues.

Innovation Solution

Inserting insulating inserts between the generating coil teeth and fixing the output wires between these inserts and the coil body, allowing simultaneous application and heat-hardening of the fixing material to secure both the conducting wires and output wires, thus eliminating one heat-hardening step and enhancing vibration resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the fixing material is heat-hardened in two separate stages to fix conducting wires and output wires, then the fixation reliability is improved, but the manufacturing time is significantly increased

Engineering Contradiction:
Improvefixation reliabilityVSAvoidmanufacturing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent combines two separate heat-hardening operations into a single unified process. The fixing material is applied to both the conducting wires and output wires simultaneously, and both are heat-hardened in one continuous operation rather than in two separate stages, thereby reducing manufacturing time while maintaining fixation reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The insulating inserts are pre-installed into the generating coil before the fixing material is applied. This preliminary positioning ensures that when the fixing material is heat-hardened, the output wires are already correctly positioned and secured, allowing the entire fixation process to be completed in a single heat-hardening step without compromising reliability.

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If varnish is applied irregularly to fix output wires, then the manufacturing process is simplified, but fixing irregularities and vibration issues arise

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidfixing stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The insulating inserts serve as intermediary components that mediate between the generating coil and the output wires. These inserts provide standardized positioning features and secure attachment points, ensuring uniform and reliable fixation of output wires without requiring manual varnish application, thereby eliminating fixing irregularities and vibration issues.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the fixation method from a variable parameter approach (manual varnish application with inconsistent quantities) to a standardized parameter approach (insulating inserts with fixed geometry and positioning). This standardization ensures consistent fixation quality across all output wires, eliminating the irregularities that cause vibration problems.

Inventive Principle:
Principle #35Parameter changes

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

This method significantly reduces manufacturing time and improves vibration resistance of output wires by stabilizing their fixation, enabling efficient and robust assembly of the magnetoelectric generator.

Implementation Method 1

applying the fixing material to the generating coil main body and the output wire; and simultaneously fixing together the conducting wire of the generating coil main body and fixing the output wire to the generating coil main body by heat-hardening the fixing material

Methodology Applied
Scientific EffectHeat-hardening: Heat Treatment

Implementation Method 2

a magnetoelectric generator that generates power by electromagnetic induction between a permanent magnet and a generating coil due to rotation of a flywheel

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS7342335B2Magnetoelectric generator and method for manufacture thereof
Publication Date: 2008.03.11 MITSUBISHI ELECTRIC MOBILITY CORP
  • US7342335B2 patent drawing
  • US7342335B2 patent drawing
  • US7342335B2 patent drawing

AI summary

A magnetoelectric generator includes: a generating coil that is constituted by: a generating coil main body in which a conducting wire is wound onto respective teeth of a stator core; and an output wire that is led axially outward from the generating coil main body; and a varnish that is applied to a surface of the generating coil and heat-hardened, and an insulating insert is inserted into a gap in the generating coil between adjacent teeth; and the output wire is fixed to the generating coil main body by the varnish and is also fixed by being held between the insulating insert and the generating coil main body.