Small motor

Abstract

The invention discloses a small motor, which includes a shell. An output shaft is arranged in a sliding manner along the axial direction in the shell. A first magnetic part is arranged in the shell. Asecond magnetic part is fixedly arranged on the output shaft. The sliding of the output shaft along the axial direction of the shell is driven by the magnetic pole change of the first magnetic part and / or the second magnetic part. The output shaft is also sleeved with a spiral spring, and the outer circumference of the planar volute spiral spring is fixedly arranged in the shell. The small motorhas a simple structure, more stable axial output and less noise.

Description

technical field [0001] The invention relates to the technical field of small motors, in particular to a small motor with axial output. Background technique [0002] Motors are also called electric motors and electronic starters. The working principle is to drive the central shaft to work by energizing the fixed coil under force in the magnetic field, and the central shaft rotates to achieve output work. With the development of technology and the increase of social demand, for example, in the field of electric toothbrushes, the motor output shaft is required In order to achieve axial work, a gear or rack structure is generally used to convert the rotational output work into axial movement. With this form, the response time of the overall equipment output is longer, and there are multi-level energy transfers at the same time, resulting in output Power reduction, and energy waste, the output power is sometimes not stable enough, and has a lot of noise. For example, in an elect...

AI Technical Summary

Problems solved by technology

The working principle is to drive the central shaft to work by energizing the fixed coil under force in the magnetic field, and the central shaft rotates to achieve output work. With the development of technology and the increase of social demand, for example, in the field of electric toothbrushes, the motor output shaft is required In order to achieve axial work, a gear or rack structure is generally used to convert the rotational output work into axial movement. With this form, the response time of the overall equipment output is longer, and there are multi-level energy transfers at the same time, resulting in output Power reduction, and energy waste, the output power is sometimes not stable enough, and has a lot of noise. For example, in an electric toothbrush, this kind of motor will also produce a large vibration, which affects the user's grip, and the overall structure is relatively Complicated, not conducive to processing and production

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