Stator Guide Member Notch Axial Terminal Routing
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Solution Overview
Problem
Conventional stators face challenges in suppressing radial expansion when winding multiple phase coils, leading to increased size and complexity in motor designs.
Innovation Solution
A stator design incorporating a guide member with notches and recessed parts that guide terminal lines in a circumferential direction, reducing radial expansion by allowing terminal lines to be led out in the axial direction, thereby minimizing the axial size and improving workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal lines are wound around the stator core in multiple phases, then the electrical functionality is improved, but the radial size increases
Solution Approach 1:
The guide member redirects terminal lines from radial arrangement to axial arrangement by providing a circumferential guide path and axial notch. This dimensional transition from radial to axial space resolves the contradiction by maintaining electrical functionality while suppressing radial expansion of the stator.
2Length of stationary object
If terminal lines are guided in circumferential direction, then radial expansion is suppressed, but the complexity of the guide structure increases
Solution Approach 1:
The guide member integrates multiple functions into a single component: it provides circumferential guidance for terminal lines, offers axial guidance through the notch, and maintains structural support. This multi-functionality reduces the need for separate guide components, thereby limiting complexity increase while achieving radial expansion suppression.
Solution Approach 2:
The notch is formed within the guide member structure itself, creating a nested configuration where the axial guidance feature is integrated into the circumferential guidance component. This nesting approach minimizes additional structural complexity while providing both guidance functions.
3Length of stationary object
If terminal lines are led out axially, then radial size is reduced, but the workability of winding coils decreases
Solution Approach 1:
The guide member is installed on the stator core before coil winding, establishing the circumferential guidance path in advance. This preliminary action enables workers to follow the pre-defined guide path during winding, maintaining ease of manufacture even with axial lead-out configuration.
Solution Approach 2:
The guide member acts as an intermediary between the winding process and the axial lead-out requirement. It provides a physical guide path that mediates the transition from radial winding to axial termination, making the manufacturing process more manageable despite the changed terminal orientation.
Data Source
AI summary
In a stator, coils of a plurality of phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The guide member has a notch that penetrates in the axial direction in a shape having a guide portion extending radially inward from the radially outer end portion of the guide member and leads the terminal line to one side in the axial direction. End surfaces in the radial direction of the notch, and a bottom part which is one end surface in the axial direction of the guide member is drawn in the circumferential direction, are connected by the recessed part having a recessed shape.