Rotor Core Assemblies, Rotor Assemblies and Motors

Abstract

The invention discloses a rotor core component, a rotor assembly with the same and a motor with the rotor assembly. The rotor core component comprises a rotor core and a magnetic ring; a bonding groove is formed in at least one of the inner circumference of the magnetic ring and the outer circumference of the rotor core; the magnetic ring sleeves the rotor core; and an adhesive material is filled between the inner circumference of the magnetic ring and the outer circumference of the rotor core. The rotor core component disclosed by the invention can reach relatively good bonding degree and ensure the permeability and the dynamic balance performance.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor core assembly, a rotor assembly with the rotor core assembly and a motor with the rotor assembly. Background technique [0002] In the motor in the related art, in order to ensure the magnetic permeability and dynamic balance performance, the fit gap between the rotor core and the magnetic ring is small, so when the rotor core and the magnetic ring are bonded, the gap remaining in the fit gap The amount of bonding material (such as glue) is limited, and a good bonding strength cannot be achieved. If the fit gap is increased to ensure the amount of bonding material, the air gap between the magnetic ring and the rotor core will be too large, which will affect the magnetic performance of the motor. The circumferential surfaces are all circumferential surfaces, and the large fit gap between the two circumferential surfaces is difficult to ensure the concentricity of assembly,...

AI Technical Summary

Problems solved by technology

[0002] In the motor in the related art, in order to ensure the magnetic permeability and dynamic balance performance, the fit gap between the rotor core and the magnetic ring is small, so when the rotor core and the magnetic ring are bonded, the gap remaining in the fit gap Adhesive materials (such as glue) are limited and cannot achieve good bond strength

If the fit gap is increased to ensure the amount of bonding material, the air gap between the magnetic ring and the rotor core will be too large, which will affect the magnetic performance of the motor. The surrounding surfaces are all circumferential surfaces, and the large fit gap between the two circumferential surfaces is difficult to ensure the assembly concentricity, resulting in eccentricity of the rotor assembly, excessive dynamic balance, and finally large vibration of the motor

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