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Dumb-bell shaped stator linear type ultrasound motor

A technology of ultrasonic motor and shaped stator, which is applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc. It can solve the problems of large volume, low output efficiency, and complex structure. Achieve the effects of small size, large output thrust and simple motor structure

Inactive Publication Date: 2007-09-19
陈波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex structure, large volume and low output efficiency of existing linear ultrasonic motors, this application provides a miniaturized and lightweight dumbbell-shaped stator linear ultrasonic motor

Method used

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  • Dumb-bell shaped stator linear type ultrasound motor
  • Dumb-bell shaped stator linear type ultrasound motor

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Embodiment Construction

[0012] An embodiment is described in detail according to FIG. 1 and FIG. 2 .

[0013] As shown in the figure, the motor of the present invention includes the stator 2, the guide rail (mover) 5 and the casing 7 of the existing linear ultrasonic motor, and the dumbbell-shaped stator 2 is fixed with the fixed shaft 6 in the casing 7, and the Both sides of the substrate 8 are pasted with piezoelectric ceramic sheets 9, and one end of the stator 2 has a wear-resistant head 4, and the wear-resistant head 4 is placed on the guide rail 5, and then the case cover 1 is fixed with screws 3.

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Abstract

The present invention discloses a dumbbell shaped stator linear ultrasonic motor which comprises a stator, a mover and a cabinet, characterized in that: the whole shape of the stator is like a dumbbell. The stator is designed with a dumbbell shape, and the stator base can be design to an integer, thus the structure dimension of the motor can be flexibly designed based on requirement. By adjusting the middle and two ends plane dimension, combination of two vibration frequency can be realized, meanwhile the problem of the selected mode having a large frequency difference with other order modes can be solved, the influence brought by stray mode and parasitic mode, the internal stress and stress gradient of the piezoelectric ceramic vibrator can be decreased, the vibrator can be prevented from crash, the motor reliability can be improved as well. Furthermore, due to large mass centralized at dumbbell shaped stator end part, the output pushing force is large with improved output power.

Description

technical field [0001] The invention relates to motors, especially linear ultrasonic motors. Background technique [0002] Ultrasonic motor, also known as ultrasonic motor, is a new type of motor that has been developed rapidly in the past 20 years. It uses the inverse piezoelectric effect of piezoelectric ceramics to excite ultrasonic vibration (frequency is generally above 20kHz), and is amplified by elastic body resonance. A new type of direct drive motor that converts electrical energy into mechanical energy output through friction coupling drive. The linear ultrasonic motor is a kind of linear motor. It can only move in a straight line and is suitable for linear drive occasions. The existing linear ultrasonic motor structure includes a stator, a mover and a box. Since the stator is cylindrical in shape, it needs to be stacked. Piezoelectric ceramics have a complex structure, large volume, and low efficiency in converting electrical energy into mechanical energy output,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H02N2/04
Inventor 陈波王育平袁义坤赵增辉赵向东
Owner 陈波