Disc type motor rotor

Abstract

The invention discloses a disc type motor rotor which comprises a rotor cover plate, a rotor core and permanent magnets. The rotor cover plate is used for covering the rotor core and being fixedly connected with the rotor core. The side wall of the rotor core is provided with a plurality of magnetic steel grooves used for embedding the permanent magnets. The magnetic steel grooves are evenly distributed in the side wall of the rotor core. The permanent magnets are embedded in the magnetic steel grooves and fixedly connected with the rotor core. The permanent magnets are long in service life and good in performance, therefore, the rotating speed during safe operation of a motor is greatly increased, and the performance of the motor is improved. The arch-shaped design of the rotor cover plate enables air gap flux density to be more approximate to a sine, so that the magnetic loss level is lowered to the minimum. Moreover, the disc type motor rotor is simple in structure, low in price and easy to realize technologically.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rotor of a disc type motor. Background technique [0002] Most of the traditional disc permanent magnet motor rotors adopt surface-mounted structure. The permanent magnet of this structure is pasted on the forehead of the rotor, and the entire permanent magnet is exposed outside, which is easy to cause damage to the permanent magnet; and due to the existence of centrifugal force, the surface-mounted structure It is impossible to make the motor run at a high speed, which limits the maximum speed of the motor and reduces the performance of the motor. [0003] Chinese Patent Publication No. CN102624114A, published on February 29, 2012, the invention patent named "disk motor rotor" discloses a disk motor rotor used in a permanent disk motor with axial magnetic flux , comprising a disc-shaped rotor tray and a plurality of magnetic steels arranged on the rotor tray; the outer ring of...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the permanent magnet is easily damaged due to the poor placement of the permanent magnet in the disc motor in the prior art, and the motor running speed is limited so that the motor performance is poor, and to provide a disc motor rotor. The rotor makes the permanent magnets not easy to damage and has a long life, and the rotor of the disc motor will not be limited in speed due to the position of the permanent magnets, thereby improving the performance of the motor

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