Permanent magnet rotary oscillating motor and electric equipment

Abstract

The invention provides a permanent-magnet rotating oscillation motor, and the motor comprises a rotor part and a stator part. The rotor part comprises a shaft, a permanent magnet, a permanent magnet cover plate, a supporting front seat, a supporting rear seat, and an elastic device. The stator part comprises a first stator iron core, a first stator coil, a first coil skeleton, a second stator iron core, a second stator coil, a second coil skeleton, and a magnetic isolation block. The first stator iron core and the second stator iron core are partitioned through the magnetic isolation block. The stator part is in an axisymmetric structure. When a high-frequency current passes through the first and second stator coils, a magnetic field is generated, thereby driving the rotor part to rotate. The invention also relates to electric equipment. According to the invention, the motor is simple in structure, and the coils are disposed on the stator. The rotor part is in a permanent magnet structure. The motor provides higher gap flux density, is lighter in weight, is quick in dynamic response, and is larger in output torque under the condition that the equal ampere-turn currents are provided.

Description

technical field [0001] The invention relates to the field of oscillating motors, in particular to a high-frequency permanent magnet rotating oscillating motor and electric equipment. Background technique [0002] With the improvement of consumers' living standards, people have higher and higher requirements for the quality and performance of electric toothbrushes. Due to cost considerations, many products on the market are realized by traditional micro motors and vibrating rings. The disadvantage is that the operating frequency is not high. Stable, poor vibration effects, and heavily dependent on battery voltage. Although there are some special-purpose oscillating motors in the market, the general structure is relatively complicated, and the consistency is poor, and it is prone to no oscillation effect, so it is not suitable for mass promotion. [0003] Chinese patent ZL201320543302.4 discloses a vibrating motor for an electric toothbrush. The rotor of the vibrating motor h...

AI Technical Summary

Problems solved by technology

The disadvantage of the above structure is that the coil is on the rotor. When the motor is working, the vibration generated will make the coil loose, and the lead head is not easy to install. In addition, four permanent magnets are used in the patent, which makes the assembly relatively complicated.

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