Bus Ring Structure for Adaptable Rotating Motor Diameters
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Solution Overview
Problem
Designing rotating electric machines with different motor diameters incurs high costs due to the need for shape changes in the bus line and terminal configuration, especially when the distance from the rotor shaft to the stator core varies.
Innovation Solution
A rotating electric machine design featuring a bus ring with an inner and outer ring connected by a bridge, forming a radial gap, and an outer ring protrusion engaged with insulating members, allowing for adaptable design across various motor diameters without significant redesign costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bus ring shape and terminal configuration are changed to accommodate different motor diameters, then the rotating electric machine can be designed for different distances from rotor shaft to stator core, but the design cost increases
Solution Approach 1:
The bus ring is designed with a standardized configuration that can be universally applied across different motor diameters. The consistent design with insulating member engagement features allows the same bus ring structure to serve multiple motor sizes without requiring redesign, achieving multi-functionality across different applications.
Solution Approach 2:
The bus ring is divided into distinct functional segments: an inner ring for terminal connections, an outer ring for engagement with insulating members, and bridge portions connecting them. This segmentation allows each part to perform its specific function independently while maintaining overall adaptability to different motor configurations.
2Ease of operation
If a terminal is provided on the circumferential portion of the bus ring and positioned by abutting on an insulating member, then the bus ring can be easily positioned, but the design requires changes for different motor diameters
Solution Approach 1:
The engagement structure between the outer ring and insulating members is designed to be universal, allowing the same positioning mechanism to work across different motor diameters. The protrusions on the outer ring engage with corresponding features on the insulating members regardless of the specific motor size, maintaining both ease of positioning and design flexibility.
Solution Approach 2:
The positioning mechanism utilizes the radial dimension through protrusions extending from the outer ring that engage with insulating members. This dimensional approach allows positioning to be achieved through radial engagement rather than circumferential adjustment, enabling consistent positioning across different motor diameters without redesign.
Data Source
AI summary
A rotating electric machine comprises: a rotor; an annular stator including stator core blocks arranged to surround a magnet of the rotor; insulating members that respectively cover the stator core blocks; coils wound around the stator core blocks via the insulating members, respectively; and a bus ring engaged with the insulating members; wherein the bus ring includes: an inner ring provided with a terminal portion to which each conductive wire of the coils is connected; an outer ring disposed on an outward side in a radial direction of the inner ring and engaged with the insulating members; and a bridge portion that connects the inner ring and the outer ring and forms a radial gap between the inner ring and the outer ring.