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Vertical bending layer energy converter round disk stator and ultrasonic electromotor using this stator

A transducer and disc technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of mechanical output and controllability reduction of ultrasonic motors, Difficult assembly, complicated processing, etc., to achieve the effect of improving stator efficiency, simplifying structure, and improving controllability

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] The present invention proposes a longitudinal bending sandwich in order to solve the existing problems of complex processing, difficult assembly, and reduced mechanical output capability and controllability of the ultrasonic motor in existing piezoelectric ultrasonic motors driven by multiple transducers. Transducer type disc stator and ultrasonic motor using the stator

Method used

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

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specific Embodiment approach 1

[0010]Specific implementation mode 1: In this embodiment, the longitudinal bending sandwich transducer type disc stator is composed of an upper end disc 1-1-1, a lower end disc 1-7-1 and a longitudinal bending sandwich transducer 1-9; The curved sandwich transducer 1-9 is fixed between the upper disk 1-1-1 and the lower disk 1-7-1, and the longitudinal curved sandwich transducer 1-9 is composed of the front cover 1-1-4, the rear Cover 1-7-4, two pairs of bending piezoelectric ceramic sheets 1-2, two pairs of longitudinal vibration piezoelectric ceramic sheets 1-3, flange 1-4, preload shaft 1-5, thin copper electrode 1- 6 and an insulating sleeve 1-8; the front end cover 1-1-4 and the rear end cover 1-7-4 are quadrangular prisms whose section is rectangular and tapered, and the small end face and the upper end of the front end cover 1-1-4 The lower end surface of the disk 1-1-1 is fixedly connected, the small end surface of the rear end cover 1-7-4 is fixedly connected with the...

specific Embodiment approach 2

[0013] Specific embodiment two: in conjunction with Fig. 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, the inner side of the upper end disc 1-1-1 is respectively processed with the inner thin-walled ring 1-1-6 of the upper end face and the upper end face bearing seat 1-1-7; - The continuous comb-like drive teeth on the lower end face of -7-1 are processed with a lower end tapered surface 1-7-5, and the lower end face thin-walled ring 1-7-2 and the lower...

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Abstract

The invention discloses a longitudinal bending sandwiched energy converter-typed round disc stator and an ultrasonic motor to which the stator is applied, which relates to the ultrasonic motor field. The invention solves the problems in the existing ultrasonic motor, of complex processing, difficult assembly, and lower mechanical output capacity and controllability of the ultrasonic motor. The longitudinal bending sandwiched converter of the stator is 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 longitudinal bending 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; each piezoelectric ceramic piece is polarized along the thickness direction and four pairs of piezoelectric ceramic pieces are respectively fixed between the front end cover, the back end cover and the flange. Rotors in the ultrasonic motor take the shape of a round disc and are embedded respectively from the top and the bottom of the stator component, 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 longitudinal bending sandwiched energy converter-typed round disc stator and the ultrasonic motor of the invention has the advantages of simple structure, flexible design, high electromechanical coupling efficiency, output with large torque, stable performance and easy control.

Description

technical field [0001] The invention relates to a longitudinally curved 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 appli...

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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