Magnet ring used for micro-motor

A technology of micro-motor and magnetic ring, applied in the field of micro-motor, can solve the problems of increasing motor vibration and noise, poor dynamic balance of magnetic ring, and difficulty in uniform quality of magnetic ring, etc. Effect

Inactive Publication Date: 2013-06-05
陈朝辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Magnet ring used for micro-motor
  • Magnet ring used for micro-motor

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Embodiment Construction

[0013] The present invention will now be further described in conjunction with specific examples, and the following examples are intended to illustrate the present invention rather than further limit the present invention.

[0014] Such as Figure 1~2 The shown magnetic ring for micro-motors includes a magnetic ring body 1 and at least two pairs of arc-shaped magnetic segments 2. The magnetic ring body 1 is an integral structure formed by injection molding of magnetic materials, and the magnetic segment 2 is embedded in the magnetic ring body 1. Inside, the magnetic segments 2 are evenly arranged in the magnetic ring body 1 according to mutually reversed polarities, and the upper surface of the magnetic ring body 1 is connected to an end face 3 facing the inner wall of the magnetic ring body 1, and the end face 3 is provided with a circle equally divided Four protrusions 4, the bottom surface of the magnetic ring body 1 is provided with an inclined surface 5 facing the inner w...

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Abstract

The invention relates to the technical field of micro-motors, in particular to a magnet ring used for the micro-motor. The magnet ring used for the micro-motor comprises a magnet ring body and at least two pairs of circular arc magnet sections. The magnet ring body is of an integrated structure and made of magnetic materials in an injection molding mode. The magnet sections are inlaid into the magnet ring body, and evenly arranged in the magnet ring body according to mutually reverse polarity. One end face is connected to one side, facing toward the inner wall of the magnet ring body, of the upper surface of the magnet ring body. Four protrusions are arranged on the end face, wherein a circumference is equally divided by the four protrusions. One inclined face is arranged one side, facing toward the inner wall of the magnet ring body, of the bottom face of the magnet ring body. Four circular-arc-shaped grooves are formed in the whole face which is formed by connection of the bottom face and the inclined face, and a circumference is equally divided by the four circular-arc-shaped grooves. The magnet ring is made of the magnetic materials in a once formed mode. Concentricity of the magnet ring and evenness of mass are guaranteed, the magnet ring is formed, and meanwhile the at least two pairs of the magnet sections are inlaid so that the magnet ring has multi-pole magnetic fields.

Description

technical field [0001] The invention relates to the technical field of micro-motors, in particular to a magnetic ring for micro-motors. 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 ...

Claims

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Application Information

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IPC IPC(8): H02K1/06H02K1/22
Inventor 陈朝辉
Owner 陈朝辉
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