Stator Winding Routing to Prevent Core Deformation
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Solution Overview
Problem
Existing motor designs face inefficiencies due to cumbersome operations required for wiring and deformation of thin metal plates, which affect magnetic characteristics and motor efficiency.
Innovation Solution
A three-phase motor design with an armature featuring an annular core and teeth, where conducting wires are arranged to facilitate easy wiring and reduce the need for special members or working, using circumferentially extending portions and a passage line portion to manage wire tension and prevent interference with the core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If projecting hooks are defined by bending thin metal plates to prevent passage line overlap, then wiring reliability is improved, but manufacturing complexity increases and magnetic characteristics deteriorate
Solution Approach 1:
The patent extracts the passage line routing function from the core structure by positioning passage lines on the outer peripheral surface of the core rather than bending metal plates to create hooks. This separates the wiring guidance function from the structural integrity of the core, maintaining reliability without manufacturing complexity.
Solution Approach 2:
The patent moves the passage line routing from the internal structure (bending metal plates) to the external surface (outer peripheral surface). This dimensional shift allows passage lines to be routed along the surface without deforming the core structure, avoiding both manufacturing complexity and magnetic characteristic deterioration.
2Manufacturing precision
If thin metal plates are deformed to create projecting hooks, then passage line positioning is improved, but magnetic characteristics deteriorate
Solution Approach 1:
The patent extracts the passage line positioning function from the core material itself and relocates it to the outer peripheral surface. This prevents deformation of the magnetic material while still achieving precise passage line positioning through surface-level routing.
Solution Approach 2:
The outer peripheral surface of the core acts as an intermediary structure that provides passage line positioning without requiring deformation of the magnetic material. This intermediary surface layer enables precise routing while preserving the magnetic properties of the core.
3Reliability
If passage lines are routed through the core structure, then wiring is secured, but motor efficiency is reduced
Solution Approach 1:
The patent relocates passage line routing from the internal core structure to the external outer peripheral surface. This dimensional change allows wiring to be secured through surface mounting rather than embedding, eliminating interference with magnetic flux paths while maintaining wiring reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for efficient wiring and maintains motor efficiency without special members or working, preventing wire interference and deformation-related losses.
Implementation Method 1
a three-phase motor including a rotor rotatable about a central axis extending in a vertical direction, and a stator radially opposite to the rotor
Data Source
AI summary
A conducting wire includes an incoming portion, coil portions, an outgoing portion leading out of an armature, and circumferentially extending portions. The circumferentially extending portions include an alternately arranged portion extending alternately on first and second axial sides of circumferentially adjacent ones of teeth, and a passage line portion extending on a same axial side of circumferentially adjacent ones of the teeth. One to two rounds of the circumferentially extending portions extend along a core back. The passage line portion extends on a same axial side over two of the teeth which have at least one of the incoming portion and the outgoing portion located circumferentially therebetween, and is radially outside of at least one of the incoming portion and the outgoing portion.