Stator Guide Member Axial Terminal Routing Radial Expansion
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Solution Overview
Problem
Conventional stators face challenges in suppressing radial expansion due to the routing of terminal lines, which can lead to increased radial dimensions and potential interference between adjacent coils.
Innovation Solution
A guide member is strategically positioned on the stator core to guide terminal lines in a circumferential direction, with distinct axial extension parts and routing parts for each coil, ensuring they intersect without contacting each other by setting their base ends at different radial positions, thus preventing radial expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If terminal lines are routed in the radial direction, then the stator radial dimension increases, but the electrical connection is achieved
Solution Approach 1:
The patent changes the routing dimension of terminal lines from radial direction to axial direction by utilizing the guide member structure. The terminal lines are led out in the axial direction through guide grooves and guide holes, completely avoiding radial expansion while achieving reliable electrical connections through the axial extension parts that extend beyond the stator core outer peripheral surface.
Solution Approach 2:
The guide member acts as an intermediary structure that facilitates the routing of terminal lines. It includes guide grooves on its outer peripheral surface and guide holes through its axial direction, providing a structured path for terminal lines to be led out axially without direct radial routing, thus mediating between the coil terminals and external connections while suppressing radial expansion.
2Area of stationary object
If terminal lines from adjacent coils are routed closely, then the stator structure is compact, but the terminal lines may contact each other causing electrical interference
Solution Approach 1:
The guide member is divided into multiple guide grooves and guide holes that are spatially segmented and positioned at different locations. Each guide groove and guide hole is dedicated to routing terminal lines from specific coils, creating physically separated pathways that prevent contact between terminal lines from adjacent coils while maintaining compact stator structure.
Solution Approach 2:
Different regions of the guide member have different guide structures tailored to local requirements. The outer peripheral surface has guide grooves for certain terminal lines, while other regions have guide holes for different terminal lines. This localized differentiation ensures that terminal lines from adjacent coils are routed through distinct pathways, preventing electrical interference while optimizing space utilization.
Data Source
AI summary
In a stator, a coil is wound around a stator core. 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 terminal line of a first coil includes a first axial extension part led out to one side in the axial direction. The terminal line of a second coil adjacent to the first coil on one side in the circumferential direction includes a second axial extension part led out to one side in the axial direction. A first position, which is a base end of the first axial extension part, and a second position, which is a base end of the second axial extension part, are set to the positions where are different in the radial direction.