Coreless disc type motor

Abstract

The invention discloses a coreless disc type motor. The coreless disc type motor comprises a shaft, a stator assembly, a rotor assembly, a front end cover, a rear end cover and a circuit board assembly. The stator assembly comprises a coil fixing support, a coil assembly and a coil cover plate; the coil fixing support is disc-shaped, and a central hole of the support sleeves the middle part of a shaft; the front end cover and the rear end cover are respectively fixed at the two sides of the coil fixing support; a plurality of fan-shaped coil positioning blocks are arranged inside the coil fixing support; the coil assembly is formed by connecting a plurality of fan-shaped windings; the fan-shaped windings sleeve the coil positioning blocks; the coil cover plate is fixed on the coil fixing support and covers the coil assembly; the rotor assembly comprises a disc-shaped back iron and a magnetic steel fixed on the back iron; and the back iron is fixed on the shaft. When a coil is damaged, what is needed is just to replace a damaged winding, thus maintenance is very simple and convenient, at the same time, such a structure enables motor power to be made larger, and the motor is high efficient and more energy-saving.

Description

technical field [0001] The invention relates to an ironless disc motor. Background technique [0002] Disc motor is also called ultra-thin motor or disc motor, which is characterized by small size, light weight, compact structure and high efficiency. Disk motors usually have a stator with two rotors sandwiched between them. The structure of the stator includes metal structure and ironless structure. The metal structure is generally rolled and pressed into a disc shape by silicon steel sheet to limit the radial magnetic flux, and the winding is fixed on the silicon steel sheet or in the slot. During the operation of the motor with this structure, the two rotors generate a strong alternating force along the axial direction. Magnetic field, the metal conductor will form a large short-circuit current inside, which will generate magnetic resistance and stator iron loss to the rotor, which will cause the stator to heat up and greatly increase the power consumption of the motor. ...

AI Technical Summary

Problems solved by technology

The coreless structure is also called injection molding or infusion molding structure. Injection molding or infusion molding is generally a process of placing the wound coil in the mold and injecting or infusing it into one body. The stator magnetic field air gap made by this process is relatively large. , the utilization rate of magnetic field power density is low, so the general energy efficiency is also relatively low. In addition, this process has high operating costs, low production efficiency, and poor maintainability. When a group of coils in the motor is damaged, the entire motor stator must be scrapped

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