Torsion spring suitable for high frequency vibration motor, high frequency vibration motor and application thereof

Abstract

The invention relates to a torsion spring suitable for a high frequency vibration motor, the high frequency vibration motor and application thereof and belongs to the technical field of micromotors. The invention in particular relates to the torsion spring suitable for the high frequency vibration motor, the high frequency vibration motor and application thereof and belongs to the technical fieldof micromotors. The invention provides the torsion spring suitable for the high frequency vibration motor, the high frequency vibration motor and application thereof, wherein the structure is furthersimplified and the deflection loss of the motor can be reduced on a basis of meeting a high frequency reciprocating vibration working condition. The torsion spring comprises a fixed segment and a twisting segment. One end of the fixed segment is a fixed end while the other end of the fixed segment is connected to the twisting segment. One end of the twisting segment is connected to the fixed segment while the other end of the twisting segment is bifurcated into hookswitches symmetrical based on the fixed segment. The end parts of the hookswitches are fixedly connected to one end of a rotor core in the motor. The structure of the motor is simplified. Repeated twisting power is provided to the rotor core by means of limitation of the torsion spring on the end part and deformation of the torsion spring.

Description

technical field [0001] The invention belongs to the technical field of micro-motors, and in particular relates to a torsion spring, a high-frequency vibration motor and applications thereof. Background technique [0002] The high-frequency vibration motor used for electric toothbrushes is evolved from the traditional DC motor. By controlling the direction of the current flowing into the winding, the N-pole magnet and the S-pole magnet are deflected to drive the iron core rotor to reciprocate and drive the rotation axis. The connected spring twists back and forth to produce torsional deformation. [0003] The high-frequency vibration motors of the prior art, such as CN208401722U, in order to stabilize the rotor, are usually provided with rotating shafts at both ends of the rotor, which are used as output shafts and also as stabilizing shafts; and the high-frequency vibration motors in the electric toothbrush only need one of them. The rotating shaft is used as the output sha...

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Problems solved by technology

[0003] The high-frequency vibration motors of the prior art, such as CN208401722U, in order to stabilize the rotor, are usually provided with rotating shafts at both ends of the rotor, which are used as output shafts and also as stabilizing shafts; and the high-frequency vibration motors in the electric toothbrush only need one of them. The rotating shaft is used as the output shaft, and the rotating shaft at the other end wastes part of the energy due to the resistance to rotation or the friction with the frame member

In addition, in order to increase the swing amplitude and frequency of the reciprocating motion of the rotor, the added elastic member is connected to the rotating shaft through a structure similar to a cross bar. The structure is complex, and the volume of the motor and accessories is increased. During use, it is easy to be strained and there is a vibration frequency. Instability and other issues

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