Micromotor magnet ring

Abstract

The invention relates to the technical field of micromotors and particularly relates to a micromotor magnet ring. The micromotor magnet ring comprises a magnet ring body and at least two pairs of arc-shaped magnetic sections, wherein the magnet ring body is an integrated structure which is formed by injection molding of magnetic materials, magnetic sections are inlaid inside the magnet ring body and are uniformly arranged inside the magnet ring body in the sequence of reversed polarities, a first end face is connected with one side of the upper surface of the magnet ring body, which faces towards the inner wall of the magnet ring body, a round hole and two grooves which are arranged oppositely are arranged on the first end face, the round hole is connected with grooves, a second end face is arranged on one side of the bottom surface of the magnet ring body, which faces towards the inner wall of the magnet ring body, and the second end face is connected with an inclined face. The micromotor magnet ring is formed once with magnetic materials, the concentricity of the magnet ring and the uniformity of the quality can be guaranteed, and simultaneously, at least two pairs of magnetic sections are inlaid at the same time of molding, so that the produced magnet ring is provided with a multipole magnetic field.

Description

technical field [0001] The invention relates to the technical field of micro-motors, in particular to a micro-motor magnetic ring. Background technique [0002] Micro motors are now widely used in automation, electromechanical and other fields. Magnetic rings are widely used as rotors in the fields of micro-motors and stepper motors. After a pulse current is passed through the external coil, the rotor rotates through a fixed angle. [0003] The traditional magnetic ring is made by bonding multiple magnetic segments, but it is difficult to process when making a small micro-motor. At the same time, it is difficult to make the magnetic pole angle accurately due to the splicing of multiple magnetic segments. At the same time, it is difficult to do The quality of the entire magnetic ring is uniform, making the dynamic balance of the magnetic ring poor, increasing the vibration and noise of the motor, and affecting the performance of the motor. Contents of the invention [000...

AI Technical Summary

Problems solved by technology

[0003] The traditional magnetic ring is made by bonding multiple magnetic segments, but it is difficult to process when making a small micro-motor. At the same time, it is difficult to make the magnetic pole angle accurately due to the splicing of multiple magnetic segments. At the same time, it is difficult to do The quality of the entire magnetic ring is uniform, making the dynamic balance of the magnetic ring poor, increasing the vibration and noise of the motor, and affecting the performance of the motor

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