Rotor assembly of permanent magnet motor and rotor end plate thereof

Abstract

The invention provides a rotor assembly of a permanent magnet motor. The rotor assembly comprises a rotor body, a rotating shaft and two rotor end plates, wherein the rotating shaft passes through two rotor end portions of the rotor body. The two rotor end plates are pressed on the two rotor end portions respectively, and each rotor end plate comprises an inner side ring body structure and an outer side ring body structure. The inner ring body structure is made of an iron material, is provided with a first ring body peripheral surface and a first thickness, and is used for being connected to the rotating shaft in a sleeving manner. The outer side ring body structure is made of an aluminum material and comprises a first section ring body structure and a second section ring body structure. The first ring body structure wraps the first ring body outer peripheral surface and is provided with a second ring body outer peripheral surface and a second thickness larger than the first thickness. The second ring body structure is wrapped on the second ring body outer peripheral surface in an integrally formed mode and has a third thickness larger than the second thickness.

Description

technical field [0001] The invention relates to a rotor assembly of a permanent magnet motor and a rotor end plate thereof, in particular to a rotor assembly of a permanent magnet motor and the rotor end plate of which the rotor end plate is made of iron material and aluminum material. Background technique [0002] see figure 1 and figure 2 , figure 1 is a schematic perspective view showing a motor rotor of the prior art; figure 2 for figure 1 A-A cross-sectional schematic diagram. As shown in the figure, a motor rotor PA100 includes a rotor body PA1, a motor shaft PA2, and two rotor end plates PA3 and PA4. The rotor body PA1 is, for example, formed by stacking a plurality of silicon steel sheets, and the motor shaft PA2 is fixedly passed through the rotor body PA1, and the two rotor end plates PA3 and PA4 are respectively passed through the motor shaft PA2 and arranged on the rotor body PA1. ends. [0003] Based on the above, the commonly used rotor end plates PA3 ...

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that in the prior art, the aluminum rotor end plate will be thermally expanded and detached from the motor shaft, while the iron rotor end plate will be difficult to process; therefore, the main purpose of the present invention is to provide a The rotor assembly of the permanent magnet motor and a rotor end plate can effectively solve the thermal expansion and processing problems of the existing rotor end plate

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