Bending layer energy converter round disk stator and ultrasonic electromotor using this stator

A technology of ultrasonic motors and transducers, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as mechanical output capacity constraints

Inactive Publication Date: 2008-09-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the mechanical output capability of the existing ultrasonic motor is restricted due to the excitation of the piezoelectric ceramic sheet pasted by the metal elastic body, the present invention provides a bending vibration sandwich transducer type disc stator and Ultrasonic motor using this stator

Method used

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  • Bending layer energy converter round disk stator and ultrasonic electromotor using this stator
  • Bending layer energy converter round disk stator and ultrasonic electromotor using this stator
  • Bending layer energy converter round disk stator and ultrasonic electromotor using this stator

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specific Embodiment approach 1

[0010]Specific Embodiment 1: In this embodiment, the bending vibration sandwich transducer type disc stator is composed of an upper end disc 1-1-1, a lower end disc 1-7-1 and an even number of bending vibration sandwich transducers 1-8 ; The even number of bending vibration sandwich transducers 1-8 are symmetrically fixed between the upper disc 1-1-1 and the lower end disc 1-7-1, and each bending vibration sandwich transducer 1-8 is formed by the front end Cover 1-1-4, rear end cover 1-7-4, insulating sleeve 1-2, two pairs of piezoelectric ceramic sheets 1-3, flange 1-4, pretension shaft 1-5 and thin copper electrode 1 -6 composition; the front end cover 1-1-4 and the rear end cover 1-7-4 are quadrangular prisms whose cross section is rectangular and tapered, the small end face of the front end cover 1-1-4 and the upper disc 1-1 -1 is fixedly connected to the lower end surface, and the small end surface of the rear end cover 1-7-4 is fixedly connected to the upper end surface ...

specific Embodiment approach 2

[0013] Specific implementation mode two: combination figure 2 , image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the front end cover 1-1-4 and the upper end disc 1-1-1, the rear end cover 1-7-4 and the lower end disc 1-7 -1 respectively use a whole piece of metal material to process the end cover / disc into one piece. Other compositions and connection methods are the same as those in Embodiment 1. This processing method can achieve the purpose of reducing energy loss, and is conducive to improving the controllability of the particle vibration track on the surface of the driving tooth.

specific Embodiment approach 3

[0014] Specific implementation mode three: combination image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the upper end surface of the upper end disk 1-1-1 and the lower end surface of the lower end disk 1-7-1 are respectively processed with continuous comb-shaped driving teeth, On the continuous comb-shaped driving teeth on the upper end surface of the upper end disc 1-1-1, an upper end tapered surface 1-1-5 is processed, and an upper end thin-walled ring 1-1-1 is respectively processed on the outer side of the upper end disc 1-1-1. 2 and the upper end face flange 1-1-3; on the continuous comb-shaped driving teeth on the lower end face of the lower end disc 1-7-1, the lower end cone surface 1-7-5 is processed, and the lower end disc 1-7-1 A lower end face thin-walled ring 1-7-2 and a lower end face flange 1-7-3 are respectively processed on the outer side of the ring. Other compositions and connection methods are the...

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Abstract

The invention discloses a flexural vibration sandwiched energy converter-typed round disc stator and an ultrasonic motor to which the stator is applied, and relates to the ultrasonic motor field. The invention solves the problem in the existing ultrasonic motor, that mechanical output capacity is restrained due to the adoption of elastic metal body stuck on piezoelectric ceramic pieces for excitation. Even flexural vibration sandwiched energy converters of the stator are symmetrically arrayed and fixed between a round disc at the upper end and a round disc at the lower end; both the front end cover and the back end cover of the sandwiched energy converter are a quadrangular with a rectangle cross section narrowing down gradually, the small end faces of the front end cover and the back end cover are fixedly connected with the upper round disc and the lower round disc; two pairs of piezoelectric ceramic pieces are respectively and fixed between the front end cover, the back end cover and the flange. A rotor with a shaft and a rotor without a shaft in the ultrasonic motor both take the shape of a round disc and are embedded respectively from the top and the bottom of a stator cylinder, a wearable cushion is fixed at the end face, contacting the round disc, of the rotor and the stator is fixed to a base through the flange on the energy converter. The flexural vibration sandwiched energy converter-typed round disc stator and the ultrasonic motor of the invention are applicable to the manufacturing field of the ultrasonic motors.

Description

technical field [0001] The invention relates to a bending vibration sandwich transducer type disc stator and an ultrasonic motor using the stator, belonging to the technical field of piezoelectric ultrasonic motors. Background technique [0002] Piezoelectric ultrasonic motor is a kind of piezoelectric ultrasonic motor that uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibration in the ultrasonic frequency range in the elastic body, and forms a particle motion with a specific trajectory at a specific point or area on the surface of the elastic body, and then passes 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 high torque, no need for a transmission mechanism, no electromagnetic interference, fast response, and self-locking when power is off. As a piezoelectric driver, it has Very wide range of applicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/12H02N2/10
Inventor 陈维山刘英想刘军考谢涛石胜君
Owner HARBIN INST OF TECH
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