Bearing-free motor

Abstract

The invention provides a bearing-free motor and belongs to the field of electric motors. The bearing-free motor comprises a machine barrel, magnetic steel, a magnetic ring, a front cover, a rear cover, a rotating shaft, a first iron core, a second iron core, a commutator, a carbon brush holder and a bakelite cover. The first iron core and the second iron core are provided with wire winding grooves, the first iron core is matched with the magnetic steel, the second iron core is matched with the magnetic ring, the first iron core and the second iron core are provided with air gaps, the rotating shaft is suspended under the effect of magnetic force and can rotate around the axis, bearings at two ends of the rotating shaft are omitted, the bearing-free motor does not produce mechanical friction or abrasion and does not lubrication, the rotation speed of the motor can be improved, the efficiency of the motor is improved, the service life of the motor is prolonged, machining accuracy reduction caused by bearing abrasion is avoided, and reliable working of the motor is ensured.

Description

technical field [0001] The present invention relates to the field of motors, in particular, to a bearingless motor. Background technique [0002] Motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machinery. [0003] The rotor of a traditional motor is supported by two mechanical bearings, so there is mechanical friction during the rotation of the rotor. Mechanical friction not only increases the friction resistance of the rotor, but also wears the bearing and reduces the service life of the bearing. Because in the high-speed running motor, the mechanical The impact force received by the bearing is greater, and the wear of the mechanical bearing is faster, so that the service life of the bearing and the motor is greatly shortened. In addition, due to the high assembly ...

AI Technical Summary

Problems solved by technology

[0003] The rotor of a traditional motor is supported by two mechanical bearings, so there is mechanical friction during the rotation of the rotor. Mechanical friction not only increases the friction resistance of the rotor, but also wears the bearing and reduces the service life of the bearing. Because in the high-speed running motor, the mechanical The impact force received by the bearing is greater, and the wear of the mechanical bearing is faster, so that the service life of the bearing and the motor is greatly shortened

In addition, due to the high assembly requirements of mechanical bearings, if the mechanical bearings are worn at high speed, the machining accuracy will be affected

Images