Slit Stator Core Plate Structure for Bending Strength and Low Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor stators face challenges in maintaining strength while bending, leading to noise and vibration issues due to reduced mechanical and electromagnetic stability during the bending process of stacked metallic plates.
Innovation Solution
The motor stator is designed with core plates featuring a combination of first and second slit parts, along with strength maintenance parts, which are strategically slit in radial and circumferential directions to enhance bending strength and reduce noise and vibration by allowing for easier formation of an arc shape without compromising structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If slit grooves are formed on metallic plates to enable bending, then ease of bending is improved, but strength of the metallic plates deteriorates
Solution Approach 1:
The core plate is segmented into multiple slit parts (first slit parts and second slit parts) that are strategically positioned between adjacent teeth. These slits divide the core plate into manageable sections that can bend independently, reducing resistance during the bending process while maintaining overall structural strength through the distributed segmentation pattern.
Solution Approach 2:
Different regions of the core plate are given different properties through the selective placement of slit parts. The areas between adjacent teeth contain slits to facilitate bending, while the tooth regions themselves maintain full strength and rigidity. This local differentiation allows the plate to bend where needed while preserving structural integrity where required.
2Ease of operation
If metallic plates are bent into arc shape to form stator, then ease of assembly is improved, but noise and vibration increase due to reduced strength
Solution Approach 1:
The core plate is divided into multiple segments through the first and second slit parts, allowing the plate to be bent into an arc shape more easily during assembly. The segmentation enables the plate to flex without generating excessive stress or noise, while the distributed slit pattern maintains sufficient structural integrity to reduce vibration during motor operation.
Solution Approach 2:
The slit parts are pre-formed on the core plate before the bending process. This preliminary action prepares the plate for easy assembly into the arc-shaped stator configuration, while the pre-positioned slits ensure that during operation, the plate maintains proper strength characteristics that minimize noise and vibration generation.
3Loss of substance
If linear-shaped metallic plates are stacked and bent to reduce scraps, then material efficiency is improved, but bending strength is reduced
Solution Approach 1:
By segmenting the linear metallic plates into multiple sections with strategically positioned first and second slit parts, the plates can be bent into arc shapes with reduced force requirements. The segmentation pattern is designed to maintain sufficient bending strength while enabling the plates to form the required stator configuration, thus minimizing material waste without sacrificing structural integrity.
Solution Approach 2:
The core plate structure implements local quality by concentrating slit parts in specific regions between adjacent teeth where bending is needed, while preserving full material strength in the tooth regions. This allows the linear plates to be efficiently bent into arc shapes with minimal scraps, while the localized slit placement ensures bending strength is maintained where structurally critical.
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 enhances the bending strength of the stator, reduces noise and vibration, and allows for efficient assembly into a circular shape with reduced material waste, thereby improving the overall performance and efficiency of the motor.
Implementation Method 1
The core plate may include a body, a plurality of teeth, at least one first slit part and at least one second slit part... In a process of bending the unit core assembly into a shape of an arc
Implementation Method 2
The rotor may be composed to reciprocally act with respect to the stator in an electromagnetic manner, and may be rotated by the force that acts in between a magnetic field and the current that flows through a coil
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A motor includes an enhanced strength of a stator, the stator being formed with a plurality of core plates stacked one on top of another, and a rotor rotatably disposed at an inner side or at an outer side of the stator. Each core plate includes a body provided in a shape of an arc, a plurality of teeth radially extended from the body, and having a coil wound thereto, at least one first slit part formed on the body by being slit in a radial direction of the body, and at least one second slit part formed on the body by being slit in a circumferential direction of the body.