Disk type motor

Abstract

A disk-type motor is composed of a salient-pole iron core made of magnetic material, stator with winding wound on iron core, shaft in the center of stator, rotor opposite to the stator and fixed to said shaft, multiple permanent magnets fixed to rotor for forming S and N poles, and salient-pole iron core of rotor. Its advantages are thin thickness, high rotation power, low cost, and good cooling effect.

Description

technical field [0001] The invention relates to a motor, especially a disc motor. Background technique [0002] Figure 1a It is the assembly diagram of the original disc motor. As shown in Figure 1, the original disk-shaped motor consists of a salient-pole-type iron core 2 with a certain length in the axial direction, a stator 1 that winds a winding 3 on the iron core 2 and plays an electromagnetic role; The rotor 5 installed on the rotor 5 is equipped with a permanent magnet with ring-shaped S pole 4a and N pole 4b multi-pole excitation; the shaft 6 that transmits the rotational force to the load. [0003] Figure 1b yes Figure 1a The top view structure diagram of the motor rotor shown in . Such as Figure 1b As shown, the rotor 5 of the original disc motor is centered on the central axis 6, and its permanent magnets form an annular multi-pole excitation of the S pole 4a and the N pole 4b. [0004] Figure 1c yes Figure 1a The top structural view of the disc-shaped...

AI Technical Summary

Problems solved by technology

A permanent magnet with annular S pole 4a and N pole 4b multi-pole excitation is installed on the rotor, so the manufacturing cost is high; it is not suitable for use on a motor with a large number of poles, so the scope of use is limited; in addition, there is a permanent magnet that cannot be changed. The problem of the shape of the magnet, where changing the shape of the permanent magnet is a method for changing the rotational torque

During excitation, there is a non-excited dead zone in the magnetic field of the permanent magnet, so the weight of the permanent magnet relative to the output ratio has the disadvantage of wasting materials

[0010] Moreover, due to the large self-excitation magnetism of the original disc-type motor, increasing the self-excitation magnetism cannot make the excitation force of the stator be utilized; due to the limited heat release capacity, it is restricted by heavy-duty operation

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