Linear oscillation motor

Abstract

The invention discloses a linear oscillation motor. The linear oscillation motor comprises a shell, a linear vibration module and a reverse vibration module are arranged in the shell, the linear vibration module and the reverse vibration module are coupled through the shell; the linear vibration module comprises a sliding piece and at least one iron core set; the sliding piece is arranged in the shell in a sliding mode in the axial direction; the sliding piece extends out of the shell to form an output shaft; magnetic steel is arranged on the sliding piece, plate springs are arranged at the two ends of the sliding piece, the sliding piece is connected with the shell through the plate springs, the iron core set comprises two E-shaped iron cores arranged on the two sides of the sliding piecerespectively, windings are arranged on the E-shaped iron cores, and the reverse vibration module is arranged in the shell and is far away from the output shaft. The structure is simple, implementation is facilitated, a center shaft can move in the axial direction to be output, output is more stable, and the using effect of the whole structure is improved.

Description

technical field [0001] The invention relates to the technical field of linear motors, in particular to a small linear oscillating motor. Background technique [0002] A motor, also known as a motor, refers to an electromagnetic device that converts electrical energy into mechanical energy according to the law of electromagnetic induction. The output of existing motors is usually in the form of rotary output. If linear motion is required, it is usually achieved through an intermediate conversion mechanism, such as a crank swing mechanism, which converts rotary motion into linear motion, which will lead to complex structures and high production costs. High power consumption, high noise and other adverse effects, linear motor can directly produce linear motion without intermediate mechanism, simple structure, low power consumption, low noise, linear oscillating motor is a type of linear motor, and linear oscillating motor generally has Output shaft and armature, the output sha...

AI Technical Summary

Problems solved by technology

The output of existing motors is usually in the form of rotary output. If linear motion is required, it is usually realized through an intermediate conversion mechanism, such as a crank swing mechanism, which converts rotary motion into linear motion, which will lead to complex structures and high production costs. High power consumption, high noise and other adverse effects, linear motors can directly generate linear motion without intermediate mechanisms, simple structure, low power consumption, low noise, linear oscillating motors are a type of linear motors, and linear oscillating motors generally have The output shaft and the armature, the output shaft is installed in the casing through the linear bearing, and the output shaft is equipped with a magnetic steel or an armature, and a buffer spring is set on the output shaft, and the output shaft is realized through the interaction between the armature and the magnetic steel. It moves back and forth in the housing, but in small linear oscillating motors, such as used in electric toothbrushes, the size of the linear bearing is difficult to meet the requirements, and the precision requirements are also high. At the same time, there is wear and tear during the use of the motor, which affects the use. The life of the linear motor will also produce noise, and the price of the linear bearing is also very high, which makes the overall manufacturing cost very high, which is not conducive to the promotion of the product. In order to solve the above problems, some linear motors are equipped with leaf springs at both ends of the output shaft. The leaf spring has A spiral elastic arm, one end of the elastic arm is connected to the output shaft, and the other end is connected to the casing. In this way, the leaf spring can support the central axis, and the spring slides axially under the action of the armature , the leaf spring can also provide a certain range of sliding space, but this form of leaf spring is an open structure. During use, the output shaft has a certain offset in the radial direction. In this case, the leaf spring will produce Stress and fatigue will affect the service life, resulting in the output of the output shaft is not stable enough. At the same time, the overall structure is not smooth enough, and the installation and positioning are not convenient, which is not conducive to improving production and processing efficiency.

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