Universal Insulator Slits for Parallel Serial Wire Extraction

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Solution Overview

Problem

Conventional insulators are designed for either parallel or serial wire connections, limiting their versatility and requiring separate insulators for different connection methods, which increases costs and complexity.

Innovation Solution

A single insulator design featuring slits for both parallel and serial wire connections, with shared slits that function as conducting wire extraction parts for both methods, allowing for flexible selection of connection systems and reducing mold costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate insulators are designed for parallel and serial wire connections, then each insulator can be optimized for its specific connection method, but the overall device complexity increases and manufacturing costs rise

Engineering Contradiction:
Improveconnection reliabilityVSAvoidinsulator variety
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The insulator is designed with multiple slits that can serve different functions depending on the connection method used. The first slit extracts conducting wires for parallel connections, while the second slit extracts conducting wires for serial connections. This multi-functional design allows a single insulator to replace what would traditionally require two different insulator designs, reducing device complexity while maintaining connection reliability for both parallel and serial configurations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If separate insulators are designed for parallel and serial wire connections, then each insulator can be optimized for its specific connection method, but manufacturing costs increase due to multiple mold requirements

Engineering Contradiction:
Improveconnection reliabilityVSAvoidmold cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

By designing a single insulator with multiple slits that can accommodate both parallel and serial wire connections, the invention eliminates the need for separate molds for different connection types. The first slit is configured for parallel connection wire extraction, while the second slit is configured for serial connection wire extraction, allowing one mold to produce insulators suitable for both connection methods, thereby reducing manufacturing costs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The insulator is segmented into multiple functional regions with distinct slits positioned at different locations. The first slit is positioned to extract conducting wires for parallel connections, while the second slit is positioned for serial connections. This segmentation allows each slit to be optimized for its specific function while being integrated into a single insulator component that can be manufactured using a single mold.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If a single insulator design is used for both parallel and serial connections, then manufacturing costs and device complexity are reduced, but the insulator must accommodate different connection methods

Engineering Contradiction:
Improveinsulator design varietyVSAvoidconnection method flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The insulator achieves universality by incorporating multiple slits with different configurations within a single component. The first slit has a specific shape and position optimized for parallel wire extraction, while the second slit has a different shape and position optimized for serial wire extraction. This multi-functional design enables the single insulator to adapt to different connection methods without compromising the versatility needed for both parallel and serial configurations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3125406B1Insulator and brushless DC motor using same
Publication Date: 2019.07.17 FUJITSU GENERAL LTD
  • EP3125406B1 patent drawingFigure 1
  • EP3125406B1 patent drawingFigure 2
  • EP3125406B1 patent drawingFigure 3

AI summary

In an insulator (40) to insulate teeth of a stator, which is a three-phase electric motor and which has nine teeth or more, and a conducting wire wound around the teeth, slits for parallel wire connection (53, 64, and 69) to be conducting wire extraction parts only in parallel wire connection, slits for serial wire connection (55, 66, and 71) to be conducting wire extraction parts only in serial wire connection, and shared slits (51, 52, 54, 56 to 63, 65, 67, 68, and 70) to be conducting wire extraction parts in both of the serial wire connection and the parallel wire connection are provided.