Stator Connecting Wire Hooks for Rotary Machine Winding Volume
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Solution Overview
Problem
Conventional stator designs for rotary electric machines face limitations in increasing the volume occupied by winding portions due to obstructing connecting wire engaging hooks, which complicate the movement of winding nozzles and lead to longer connecting wires, and also result in a larger distance between the circuit substrate and the stator core.
Innovation Solution
The stator design features connecting wire engaging hooks positioned near the border portions between magnetic pole sections and the yoke, allowing smooth nozzle movement and increased winding volume, with the hooks also guiding the circuit substrate closer to the stator core by being integrated into the cylindrical outer wall portion, reducing the distance between the substrate and core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connecting wire engaging hooks are disposed in the slot between adjoining magnetic pole sections, then the connecting wire can be engaged and guided, but the nozzle movement is restricted and the volume occupied by winding portions is limited
Solution Approach 1:
The connecting wire engaging hooks are moved from the slot between magnetic pole sections to the border portions between magnetic pole sections and the yoke. This spatial relocation in a different dimension (from slot interior to border region) allows the hooks to engage connecting wires without interfering with nozzle movement in the slot, thus resolving the contradiction between reliable wire engagement and sufficient winding volume.
2Reliability
If connecting wire engaging hooks are disposed in the slot between adjoining magnetic pole sections, then the connecting wire can be engaged, but the nozzle movement becomes intricate and the connecting wire becomes rather long
Solution Approach 1:
By relocating the hooks to the border portions between magnetic pole sections and the yoke (a different spatial dimension), the hooks remain functional for engaging connecting wires while being positioned outside the slot where the nozzle operates. This separation of functions in different spatial zones simplifies nozzle movement while maintaining reliable wire engagement.
3Ease of manufacture
If the circuit substrate is positioned away from the stator core, then there is sufficient space for other components, but the distance between the circuit substrate and the stator core increases
Solution Approach 1:
The connecting wire engaging hooks serve dual functions: they engage and guide the connecting wires, and they also serve as support structures for the circuit substrate. By making the hooks multi-functional, the circuit substrate can be positioned close to the stator core (reducing distance) while still having adequate space for other components, thus resolving the contradiction between compact arrangement and manufacturing ease.
Data Source
AI summary
A stator for rotary electric machines is provided, in which a volume occupied by winding portions may be increased and a connecting wire may readily be engaged to prevent from coming off. A plurality of connecting wire engaging hooks 23, with which the connecting wire extending from the winding portion is engaged, are respectively disposed in the vicinity of border portions between a plurality of magnetic pole sections 11 and a yoke 9, corresponding to the magnetic pole sections 11. A mounting location of a connector 29 on a circuit substrate 7 is determined so that all of ends of a plurality of terminal conductors of the connector may be located between adjoining two of the connecting wire engaging hooks 23. With this arrangement, all of the ends 31a of the plurality of terminal conductors 31 may be disposed between adjoining two of a plurality of the winding portions 3, and be spaced from the winding portions 3.