Rotor assembly, motor and household appliance

CN119448614APending Publication Date: 2025-02-14WELLING WUHU MOTOR MFG +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202310937256.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-07-28
Publication Date
2025-02-14

AI Technical Summary

Technical Problem

In the prior art, in order to improve motor efficiency, it is necessary to reduce the use of magnetic bridge features, resulting in the development of the rotor core from the integral rotor to the blocked rotor core, the internal and external magnetic bridges are abolished, and the strength and manufacturability of the parts are reduced.

Method used

By designing the rotor core as multiple sub-cores and forming installation grooves between adjacent sub-cores, multiple permanent magnets are arranged in the grooves, and the rotor shaft, rotor core and permanent magnet are connected into a whole using plastic seals. A limiting component is also provided on the radially inner and outer sides of the permanent magnet to cancel some or all of the magnetic bridge structure.

Benefits of technology

It achieves the reduction of electromagnetic eddy current loss, significantly improves motor efficiency, and at the same time improves the manufacturability and production efficiency of rotor components, and reduces manufacturing costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119448614A_ABST
    Figure CN119448614A_ABST
Patent Text Reader

Abstract

The invention provides a rotor assembly, a motor and a household appliance. The rotor assembly comprises a rotating shaft; the rotor core comprises a plurality of sub-cores, the plurality of sub-cores are arranged along the circumferential direction of the rotating shaft, and a mounting groove is formed between every two adjacent sub-cores; a plurality of permanent magnets, wherein each permanent magnet is arranged in one mounting groove; the plastic package part is integrally formed by injection molding and is used for connecting the rotating shaft, the rotor core and the plurality of permanent magnets; wherein the plastic package piece comprises a first limiting part and a second limiting part, the first limiting part is arranged on the radial inner side of the permanent magnet, and / or the second limiting part is arranged on the radial outer side of the permanent magnet.
Need to check novelty before this filing date? Find Prior Art