A motor rotor assembly

A technology for motor rotors and components, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of large amount of magnetic ring material, poor magnetic ring induction, low utilization rate, etc., and achieve good induction effect. , The induction magnetic field is uniform and the effect of saving materials
CN103855824BActive Publication Date: 2016-06-22ZHONGSHAN BROAD OCEAN
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZHONGSHAN BROAD OCEAN
Publication Date
2016-06-22

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Abstract

The invention discloses a motor rotor assembly. The motor rotor assembly comprises a permanent magnet, a rotor iron core and a magnetic ring. The rotor iron core comprises an annular ring and a plurality of permeability blocks, wherein the annular ring is provided with a center axle hole, and the permeability blocks protrude out of the outer side of the annular ring, through holes are formed in the permeability blocks, a radial groove is formed between every two adjacent permeability blocks, the permeability blocks are embedded into the radial grooves, the end face and the bottom face of the rotor iron core are provided with an end plate and a bottom plate in an injection molding mode respectively, the end plate and the bottom plate are connected into a whole through a connecting column penetrating through the through holes, the end face of the end plate is provided with an annular groove, and the magnetic ring is embedded into the annular groove. The motor rotor assembly is simple in structure, easy to install, and good in inducting effect, the magnetic ring materials are saved, and cost is reduced.
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Description

Technical field:

[0001] The invention relates to a motor rotor assembly, which belongs to the field of DC brushless motors. Background technique:

[0002] The rotor assembly of a traditional brushless DC motor (BLDCMOTOR) generally includes a rotor core, a permanent magnet, a magnetic ring bracket and a magnetic ring. The permanent magnet is installed on the rotor core, and the magnetic ring bracket is connected to the rotor core. The magnetic ring Nested on the magnetic ring bracket, the structure is complex, troublesome to install, and the induction of the magnetic ring is poor, but the end-face induction structure with better induction effect is adopted. The magnetic ring is usually a disc type, and there is a shaft hole in the center of the magnetic ring to cooperate with the motor shaft. , the material consumption of the magnetic ring is large, the utilization rate is low, and the cost is high. Invention content:

[0003] The purpose of the present invention is to pr...

Claims

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