Motor Stator Insulator Lead-out Guide Portions
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Solution Overview
Problem
Conventional electric motor stators with concentrated windings face issues where lead-out wires from one phase are prone to contact with adjacent tooth winding portions of other phases, leading to unstable motor function and the need for insulating tubes, which increase costs and complexity.
Innovation Solution
The motor stator design incorporates lead-out guide portions in the insulators, allowing lead-out wires to be drawn out close to the tooth winding portions, preventing phase contact and eliminating the need for protective tubes, thereby enhancing insulation and reducing assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If concentrated winding method is used with adjacent tooth winding portions close to each other, then space utilization is improved, but lead-out wires are prone to contact with adjacent tooth winding portions of other phases
Solution Approach 1:
The insulator is divided into multiple functional regions including lead-out guide portions that are positioned specifically to guide lead-out wires away from adjacent tooth winding portions. This segmentation allows the insulator to provide targeted insulation guidance without requiring complete coverage, thus maintaining space efficiency while preventing contact.
Solution Approach 2:
The lead-out guide portions act as intermediary structures between the lead-out wires and the adjacent tooth winding portions. These guide portions provide a controlled path for the lead-out wires, preventing direct contact with adjacent windings while allowing the concentrated winding configuration to be maintained.
2Reliability
If insulating tubes are added to protect lead-out wires, then insulation reliability is improved, but device complexity and cost increase
Solution Approach 1:
The insulation function is merged into the insulator structure itself through the lead-out guide portions. Instead of adding separate insulating tubes, the insulator is designed to provide both mechanical support and electrical insulation guidance in a single integrated component, reducing overall device complexity.
Solution Approach 2:
The insulator provides its own insulation function through the lead-out guide portions without requiring additional protective components. The guide portions are self-forming structures that automatically provide the necessary insulation and guidance, eliminating the need for separate insulating tubes.
3Reliability
If insulating tubes are added to protect lead-out wires, then insulation reliability is improved, but manufacturing cost and assembly time increase
Solution Approach 1:
The insulation function is merged into the insulator structure itself through the lead-out guide portions. Instead of adding separate insulating tubes, the insulator is designed to provide both mechanical support and electrical insulation guidance in a single integrated component, reducing overall device complexity.
Solution Approach 2:
The insulator provides its own insulation function through the lead-out guide portions without requiring additional protective components. The guide portions are self-forming structures that automatically provide the necessary insulation and guidance, eliminating the need for separate insulating tubes.
Data Source
AI summary
A stator of a motor is provided with a stator core having a plurality of teeth and a plurality of windings wound around teeth of the stator core. The stator also has an insulator that is provided with a plurality of lead-out guide portions that enable lead-out wires of the windings to be drawn out from the tooth winding portions in a state of being close to the tooth winding portions.