Motor rotor and motor therewith

Abstract

The invention discloses a motor rotor and a motor therewith. The motor rotor comprises an iron core, and the iron core is provided with a through groove which is through in the axial direction. The iron core is provided with a magnetic steel groove, and the interior of the magnetic steel groove is provided with a fixing part. The motor rotor also comprises a rotating shaft which passes through the through groove to be disposed in the iron core; and a magnetic steel which is disposed in the magnetic steel groove. At least a part of the fixing part abuts against the magnetic steel, so as to fix the magnetic steel. The motor core also comprises a front baffle plate and a rear baffle plate, wherein the front and rear baffle plates are respectively disposed at two ends of the iron core so as to seal the iron core. According to the embodiment of the invention, the fixing part is disposed in the magnetic steel groove of the iron core, and the magnetic steel is put in the magnetic steel groove and is fixed in the iron core through the fixing part without filling, sealing and locking the magnetic steel, thereby simplifying the assembly process, preventing the filling and sealing nonuniformity from causing the increase of dynamic unbalance of the rotor, greatly reducing the weight of the motor rotor, improving the weight controllability of the motor rotor, and enabling the vibration and noise of the motor rotor to be reduced.

Description

technical field [0001] The present invention relates to the technical field of motors, more specifically, to a motor rotor and a motor having the same. Background technique [0002] A permanent magnet synchronous motor rotor structure is disclosed in the related art. This structure includes a rotating shaft, a rotor core and a number of permanent magnets sleeved outside the rotating shaft. A number of mounting holes are opened on the rotor core, and the permanent magnets are embedded in the mounting holes. A step is provided, the lower end plate is sleeved outside the rotating shaft and supported on the step, the rotor iron core is supported on the lower end plate, and the upper end plate is pressed on the rotor iron core and locked by a nut. The fixing method of the rotor iron core will increase the weight of the rotor, which is not conducive to the dynamic balance of the rotor. [0003] A permanent magnet synchronous motor rotor for electric vehicles is also disclosed in ...

AI Technical Summary

Problems solved by technology

The rotor of the motor with this structure is still relatively complicated, and potting will increase the weight of the rotor, and high-speed motors require high dynamic imbalance of the rotor. Uneven potting will increase the dynamic imbalance of the rotor, making the weight unbalanced. Good control, resulting in increased motor vibration and noise

Therefore, the structure of the motor rotor still needs to be improved

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