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Ring type standing-wave ultrasonic motor vibrator of cantilever bending vibration transducer

An ultrasonic motor and transducer technology, applied in the direction of generator/motor, piezoelectric device/electrostrictive device, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problem of piezoelectric ultrasonic motor electromechanical Low coupling efficiency, restricted mechanical output capability, poor mechanical output capability, etc., to achieve the effect of simple structure, high electromechanical coupling efficiency, and stable performance

Inactive Publication Date: 2011-08-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem that the mechanical output capability of the stator of the existing ultrasonic motor that is excited by pasting the piezoelectric ceramic sheet with the metal elastic body is restricted. The invention provides a cantilever bending vibration transducer ring type Standing wave ultrasonic motor vibrator
[0006] The piezoelectric ceramic element in the cantilever bending vibration transducer ring type standing wave ultrasonic motor vibrator of the present invention adopts a sandwich structure, and adopts piezoelectric ceramics with high electromechanical coupling efficiency d 33 mode work, which solves the problem of low electromechanical coupling efficiency and poor mechanical output capability of pasted piezoelectric ceramic chip piezoelectric ultrasonic motor

Method used

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  • Ring type standing-wave ultrasonic motor vibrator of cantilever bending vibration transducer
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  • Ring type standing-wave ultrasonic motor vibrator of cantilever bending vibration transducer

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specific Embodiment approach 1

[0009] Specific embodiment one: combination Figure 1 to Figure 3 To illustrate this embodiment, the toroidal standing wave ultrasonic motor vibrator of the cantilever bending vibration transducer includes a ring 1-1 and a cantilever bending vibration sandwich transducer 10, and the upper end surface of the ring 1-1 is evenly distributed. Comb-shaped driving teeth 1-5, the inner side of the ring 1-1 is processed with a thin-walled ring 1-2, the inner side of the thin-walled ring 1-2 is processed with a flange 1-3, the ring 1-1, the thin-walled ring 1-2 and the flange 1-3 coaxial, the cantilever bending vibration sandwich transducer 10 includes a cantilever 1-4, a front end cover 3, a rear end cover 4, an insulating sleeve 6, two pairs of bending vibration piezoelectric ceramic sheets 2, a fastening screw 5 and Electrode sheet 7, the front end cover 3, the rear end cover 4 and the cantilever 1-4 are all rectangular parallelepiped, the cantilever 1-4 is fixedly connected to the l...

specific Embodiment approach 2

[0010] Specific implementation mode two, combination Figure 4 To describe this embodiment, the difference between this embodiment and the toroidal standing wave ultrasonic motor vibrator of the cantilever bending vibration transducer described in the first embodiment is that each bending vibration piezoelectric ceramic sheet 2 is polarized in the thickness direction. Each flexural vibration piezoelectric ceramic sheet 2 is symmetrically divided into an upper half 2-1 and a lower half 2-2. The polarization directions of the two flexural piezoelectric ceramic sheets of the pair of flexural vibration piezoelectric ceramic sheets 2 are opposite, The polarization modes of the two pairs of flexural vibration piezoelectric ceramic sheets 2 are opposite.

[0011] In this embodiment, the polarization modes of the two pairs of bending vibration piezoelectric ceramic sheets 2 are opposite, and the polarization directions of the bending vibration piezoelectric ceramic sheets 2 at the same po...

specific Embodiment approach 3

[0012] Specific embodiment three. The difference between this specific embodiment and the present embodiment described in specific embodiment one and the cantilever bending vibration transducer described in specific embodiment one is that the difference between the vibrator of the toroidal standing wave ultrasonic motor is that the bending vibration The cross section of the piezoelectric ceramic sheet 2 is rectangular.

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Abstract

The invention provides a ring type standing-wave ultrasonic motor vibrator of a cantilever bending vibration transducer, relating to the technical field of piezoelectric ultrasonic motors and solving the problem that the mechanical output capability of the prior ultrasonic motor stator is restricted. The ring type standing-wave ultrasonic motor vibrator of the cantilever bending vibration transducer comprises a ring and a cantilever bending vibration sandwich transducer, wherein the cantilever bending vibration sandwich transducer comprises a cantilever, a front end cover, a rear end cover, an insulation sleeve, two pairs of bending vibration piezoelectric ceramic plates, fastening screws and electrode plates, wherein the cantilever is fixedly connected with the lower end surface of the ring, a through groove is arranged between the cantilever and the lower end surface of the ring, the front end cover and the rear end cover are fixedly connected with the cantilever are by the fastening screws, and the bending vibration piezoelectric ceramic plates are arranged between the front end cover and the cantilever and between the rear end cover and the cantilever. The ring type standing-wave ultrasonic motor vibrator can be applied to the field of manufacturing ultrasonic motors.

Description

Technical field [0001] The invention relates to a ring-shaped standing wave ultrasonic motor vibrator of a cantilever bending vibration transducer, belonging to the field of piezoelectric ultrasonic motors. Background technique [0002] The piezoelectric ultrasonic motor uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibrations in the ultrasonic frequency range in the elastic body, and form a particle movement with a specific track at a specific point or a specific area on the surface of the elastic body, and then pass through the stator, The frictional coupling between the rotors converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of low speed and large torque, no transmission mechanism, no electromagnetic interference, fast response speed and self-locking when power off. As a piezoelectric drive, it has the advantages Very wide application. [0003] Due to the simplicity of the excitation prin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/08H02N2/00H10N30/00
Inventor 陈维山刘英想姚郁刘军考石胜君
Owner HARBIN INST OF TECH
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