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A diaphragm type linear motor

A linear motor and diaphragm type technology, applied in the field of diaphragm type linear motors, can solve the problems of small shrapnel damping, long stop time, and large vibration sense changes, and achieve the effect of reducing stop time and easy control

Active Publication Date: 2020-05-12
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small damping of shrapnel, the vibration sense of different driving frequencies varies greatly, the nonlinearity is serious, it is difficult to control, and the stop time is long. If it is necessary to increase the damping, ferrofluid is often used, which greatly increases the difficulty of the assembly process.

Method used

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  • A diaphragm type linear motor
  • A diaphragm type linear motor
  • A diaphragm type linear motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] For the diaphragm type linear motor in Embodiment 1, the power drive structure includes the third magnet on the vibrator 3 and the second coil 5 located on the upper cover 11. The vibration intensity of the diaphragm type linear motor is small, and it is often necessary to use multiple diaphragms A linear motor is used to drive the target.

[0045] Different from the first embodiment, this embodiment also improves the power driving structure of the diaphragm type linear motor.

[0046] Such as Figure 6As shown, in this embodiment, the vibrator 3 includes a permanent magnet and a fixing block 6 for fixing the permanent magnet. The permanent magnets include a first permanent magnet 81 and a second permanent magnet 82 . On the vibrator 3 , the magnetic poles of the first permanent magnet 81 and the second permanent magnet 82 are oppositely arranged.

[0047] The electromagnet 7 includes an iron core 71 and a first coil 72 wound on the iron core 71 , and an alternating ...

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PUM

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Abstract

The present invention provides a diaphragm-type linear motor comprising a motor housing, a vibrator, and an elastic unit that suspends the vibrator in the motor housing and provides an elastic restoring force for the vibrator. The elastic unit includes two diaphragms located at the two ends of the vibrator in the vibrating direction. The diaphragms are fixedly connected to the vibrator. The diaphragm-type linear motor replaces the springs by the diaphragms. Since the damping of the diaphragms is much larger than that of the springs, the linear motor can have a smaller driving amplitude changeat the same voltage and different frequencies, so that the vibratory driving is easier to control and the stop time of the elastic unit can be greatly shortened.

Description

technical field [0001] The invention relates to the technical field of vibration of electronic equipment, and more specifically, relates to a diaphragm type linear motor. Background technique [0002] A linear vibration motor, referred to as a linear motor, generally consists of three parts: a stator, a vibrator and an elastic unit. The elastic elements of linear vibration motors currently on the market are basically made of shrapnel. Due to the small damping of the shrapnel, the vibration induction of different driving frequencies varies greatly, the nonlinearity is serious, it is difficult to control, and the stop time is long. If it is necessary to increase the damping, ferrofluid is often used, which greatly increases the difficulty of the assembly process. Contents of the invention [0003] In view of the above problems, the present invention provides a diaphragm type linear motor, which includes a motor casing, a vibrator, and an elastic unit that suspends the vibra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02K33/02
Inventor 施玉昆
Owner TRULY OPTO ELECTRONICS
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