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Solution Overview
Problem
Existing motor designs face challenges in miniaturization due to spatial restrictions, particularly in the radial direction, which affects insulation performance and makes it difficult to connect lead wires efficiently to terminals while maintaining performance.
Innovation Solution
The motor incorporates a teeth-divided core coupled to the stator core in an axial direction, with an improved insulator structure that includes power and neutral terminal units connected to the stator core, allowing for efficient connection of lead wires to terminals within a reduced radial thickness, thereby overcoming spatial constraints and enhancing insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the stator size is reduced to achieve miniaturization, then the motor size and weight are reduced, but the insulation performance deteriorates and lead wire connection becomes difficult
Solution Approach 1:
The patent transitions from planar terminal arrangement to three-dimensional立体 terminal configuration. Terminals are arranged at different heights (first terminal at first height, second terminal at second height) and different radial positions (inner circumferential face vs. outer circumferential face), creating spatial separation that maintains insulation performance while reducing overall motor size.
Solution Approach 2:
The patent implements nested arrangement where terminals are positioned within the radial thickness of the back yoke. The first terminal is arranged on the inner circumferential face while the second terminal is arranged on the outer circumferential face, effectively nesting the terminal structure within the existing radial space of the stator core.
2Area of stationary object
If terminals are arranged on the same plane to increase space utilization, then radial space is saved, but insulation between terminals becomes difficult to secure
Solution Approach 1:
The patent moves from two-dimensional planar arrangement to three-dimensional spatial arrangement by utilizing the axial dimension (different heights) in addition to radial positioning. This allows terminals to be closely spaced radially while maintaining insulation through axial separation and insulator structures.
Solution Approach 2:
The patent introduces insulator structures as intermediary elements between terminals. These insulators are specifically positioned to provide electrical isolation between the first terminal and second terminal, enabling close radial spacing while maintaining insulation performance.
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
This design enables miniaturization and weight reduction of the motor while ensuring improved insulation performance and efficient lead wire connections, facilitating faster and more compact motor operation.
Implementation Method 1
structures of the stator and the rotor are the same... wind a coil therearound to generate a rotating magnetic field, thereby inducing electrical interaction between the rotor and the stator to induce rotation of the rotor
Data Source
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AI summary
Various embodiments relate to a motor in which a structure of an insulator is improved. The motor includes an insulator module coupled to a top face of a stator core. The insulator module includes: each power terminal unit connected to each of 3-phases power lead wires; a neutral terminal unit connected to a neutral point of a coil; and an insulator body for achieving insulations between the power and neutral terminal units and the stator core, and between the power and neutral terminal units, wherein the power terminal unit and the neutral terminal unit are positioned at different vertical levels.