Motor Insulator Connecting Sections Nozzle Pathway
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Solution Overview
Problem
Conventional motor insulators hinder the nozzle pathway of the coil winding machine, limiting the space factor and coil winding efficiency due to the radial inward positioning of the annular section's inner surface in relation to the stator core's back yoke section.
Innovation Solution
The insulator design includes connecting sections with circumferential and radial planar portions that extend from the tooth sections, allowing the nozzle to move freely and avoiding hindrance, thereby securing a larger pathway and improving the space factor by ensuring the inner surface of the connecting sections coincides with the back yoke section's cutout surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner surface of the annular section is positioned radially inward relative to the back yoke section, then the insulator provides adequate insulation coverage, but the nozzle pathway is hindered and coil space factor is reduced
Solution Approach 1:
The insulator is segmented into distinct functional zones: the annular section for insulation coverage and the connecting sections with planar portions for nozzle access. This segmentation allows each part to fulfill its specific function without compromising the other, resolving the contradiction between insulation coverage and nozzle pathway clearance.
Solution Approach 2:
The solution introduces a new dimensional element by extending planar portions circumferentially from the tooth sections. This creates an additional spatial dimension that guides the nozzle pathway without requiring the entire annular section to be radially outward, thus maintaining insulation coverage while enabling nozzle access.
2Ease of manufacture
If the inner surface of the annular section coincides with the back yoke section inner surface, then manufacturing is simplified, but the nozzle cannot approach the back yoke section closely enough
Solution Approach 1:
The insulator exhibits local quality variations: the annular section maintains a simple geometry for easy manufacturing, while the connecting sections feature extended planar portions with specific orientations to facilitate nozzle movement. This localized differentiation allows both manufacturing simplicity and operational ease to be achieved in their respective zones.
3Productivity
If the connecting sections include circumferential and radial planar portions, then the nozzle pathway is secured and coil space factor is improved, but the insulator structure becomes more complex
Solution Approach 1:
The circumferential planar portion and radial planar portion are merged into a continuous connecting section that integrates both functions. This merging reduces the number of separate components and simplifies the overall insulator structure while still providing the necessary nozzle pathway clearance and improving coil space factor.
Data Source
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AI summary
An insulator (530) includes connecting sections (535) for connecting an inner circumferential surface of an annular section (531) to one end of respective tooth sections (532) of the insulator. Each connecting section (535) includes circumferential planar portions (535a) extending circumferentially from the one end of a corresponding tooth section (532) and a radial planar portion (535b) extending radially from the one end of the tooth section (532).