Single-brush two-phase 2/2 pole magnetoresistance vibrating electric machine

Abstract

A structure of a two-phase 2/2-pole permanent magnet rotor DC vibration motor. One end of the coil in the stator is connected to the commutator piece, the other end is connected to one pole of the power supply, and the brush is connected to the other pole of the power supply; the rotor is composed of an eccentric permanent magnet and a shaft sleeve, and the stator is composed of coils arranged in line on both sides of the fixed shaft Composition, the rotor rotates on the fixed shaft with the help of the rotor sleeve; the fixed shaft neither coincides with the center of mass of the rotor, nor is it on the line of the rotor magnetic poles, thus forming an eccentric vibrator; the single brush commutator provides the starting torque and Stable running torque. After balancing the center of gravity of the rotor, the same motor structure can also be used for ordinary power motors; the same single-brush commutator can also be used for permanent magnet DC motors with armature rotors, and rotor position sensors that replace ordinary permanent magnet rotor DC motors , directly drive the high-power commutation circuit. The motor structure can also be applied to the multi-pole permanent magnet rotor DC motor.

Description

technical field [0001] The invention relates to the structure of a reluctance motor under an asymmetrical magnetic field, especially a flat miniature vibration motor. Background technique [0002] At present, there are two types of flat micro-vibration motor structures, one with a commutator and the other without a commutator, relying on an external commutation circuit to commutate the coil. [0003] Micro vibration motors are used in mobile phones or other personal portable electronic information products, and generally use batteries as power sources. Therefore, micro motors are required to consume less power on the one hand, small in size, and light in weight. On the other hand, they must meet the application purpose: Sufficient vibration force. At present, the vibration strength of the flat vibration motor with the coil as the rotor has basically reached the limit, and the complicated manufacturing process also makes it difficult to reduce the cost of the motor. [0004...

AI Technical Summary

Problems solved by technology

Usually because the brush commutator of this kind of motor has no starting torque at a specific position of the rotor, the direction of the starting torque is uncertain, and there is a power short circuit at the moment of commutation, it lacks practical application value, but this kind of motor has a motor structure Simple, high torque and high speed characteristics

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