Rotor structure, method of forming same, and electric machine
The rotor structure, which uses radial plastic magnets, tangential ferrites, and axial ferrite disks formed by one-piece injection molding, solves the problems of magnetic leakage and complex assembly in traditional permanent magnet motors, achieves efficient magnetic flux utilization and simplified assembly, and improves the performance and reliability of the motor.
CN122315968APending Publication Date: 2026-06-30GREE ELECTRIC APPLIANCE INC OF ZHUHAI +1
View PDF 0 Cites 0 Cited by
Patent Information
- Application Number
- CN202411955040.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
The magnetization method of traditional permanent magnet motors leads to magnetic leakage, which reduces the utilization efficiency of permanent magnets and increases assembly difficulty and complexity.
Method used
The rotor structure, which is integrally injection molded with radial plastic magnets, tangential ferrite and axial ferrite disks, forms parallel magnetic circuits in the tangential, axial and radial directions, simplifying the assembly process.
Benefits of technology
It improves the magnetic flux utilization efficiency of the motor, reduces assembly difficulty, enhances the mechanical strength and reliability of the motor, simplifies the production process, and reduces costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122315968A_ABST
Abstract
This invention provides a rotor structure, its molding method, and a motor. The rotor structure includes: radial plastic magnets (6), with multiple radial plastic magnets (6) arranged circumferentially at intervals, forming mounting grooves (5) between adjacent radial plastic magnets (6); tangential ferrite (2), disposed within the mounting grooves (5) and used to form a tangential magnetic field; axial ferrite disks (4), disposed at both axial ends of the radial plastic magnets and used to form an axial magnetic field; and a plastic-coated shell (1), encasing the radial plastic magnets (6), tangential ferrite (2), and axial ferrite disks (4), and injection molding the radial plastic magnets (6), tangential ferrite (2), and axial ferrite disks (4) into a single unit. According to the rotor structure of this invention, the assembly difficulty of the rotor structure can be reduced, the assembly effect improved, and the working performance and reliability of the motor guaranteed.
Need to check novelty before this filing date? Find Prior Art