Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Longitudinal-shaking sandwich energy converter type cylinder shape dual rotor ultrasonic motor

A technology of ultrasonic motors and transducers, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., to eliminate adverse effects, improve controllability, and simplify structures Effect

Inactive Publication Date: 2010-08-04
HARBIN INST OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing ultrasonic motor, the mechanical output capability is limited and the single stator To solve the problem that only a single motion output can be achieved, a bending vibration sandwich transducer-type cylindrical double-rotor ultrasonic motor is provided
[0005] In the ultrasonic motor provided by the present invention, the piezoelectric ceramic element adopts a sandwich structure, and adopts the d33 mode with high electromechanical coupling efficiency of piezoelectric ceramics to work , to solve the problems of low electromechanical coupling efficiency and poor mechanical output capability of pasted piezoelectric ceramic chip piezoelectric ultrasonic motors, and also simplify the structure through the integrated structure of the front end cover and the stator cylinder, and improve the vibration trajectory of the surface particles of the cylindrical elastic body Controllability, eliminating the adverse effects on the vibration waveform of the stator caused by connecting the transducer and the cylinder in other ways

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Longitudinal-shaking sandwich energy converter type cylinder shape dual rotor ultrasonic motor
  • Longitudinal-shaking sandwich energy converter type cylinder shape dual rotor ultrasonic motor
  • Longitudinal-shaking sandwich energy converter type cylinder shape dual rotor ultrasonic motor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Specific implementation mode one: see Figure 1 to Figure 11, this embodiment is composed of a stator assembly 1, an inner rotor assembly, an outer rotor assembly, a bearing housing 4, a bearing 5, a bearing preload end cover 6, a second screw group 7 and a third screw group 8; the stator assembly 1 is composed of The driving cylinder 1-6 is composed of 2n bending vibration sandwich transducers 1-7, wherein n is a natural number greater than 1, and the 2n bending vibration sandwich transducers 1-7 are symmetrically distributed and fixedly connected to the driving circle Outside the side wall of the barrel 1-6, the bending vibration sandwich transducer 1-7 consists of a front end cover 1-6-2, a rear end cover 1-1, an insulating sleeve 1-2, and two pairs of piezoelectric ceramic sheets 1-3 , flange 1-4 and two pairs of copper electrode sheets 1-5, the front end cover 1-6-2 and the rear end cover 1-1 are quadrangular prisms whose sections are all rectangular and tapered, a...

specific Embodiment approach 2

[0014] Specific implementation mode two: see Figure 5 The difference between this embodiment and the first embodiment is that the cylinder 1-6-1, the front end cover 1-6-2, the thin-walled ring 1-6-3 and the cylinder flange 1-6-4 adopt a The whole piece of metal material is processed into an integral part of the drive cylinder, and a number of evenly distributed threaded holes 1-6-6 are processed on the cylinder flange 1-6-4, and the threaded holes 1-6-6 are connected with the inner rotor with shaft The output shafts of 2-1 are parallel.

[0015] In this embodiment, the cylinder 1-6-1, the front end cover 1-6-2, the thin-walled ring 1-6-3 and the cylinder flange 1-6-4 are processed into one component, which can reduce energy The purpose of the loss is beneficial to improve the controllability of the vibration trajectory of the surface particle of the drive tooth 1-6-5; the threaded hole 1-6-6 can be used to realize the installation of the motor in the mechanical system.

specific Embodiment approach 3

[0016] Specific implementation mode three: see Figure 4 , the difference between this embodiment and specific embodiment 1 is that each piezoelectric ceramic sheet 1-3 is symmetrically divided into a left half sheet 1-3-1 and a right half sheet 1-3-2, and the left half sheet 1-3-2 The polarization directions of 3-1 and the right half sheet 1-3-2 are opposite, and the two adjacent left half sheets 1-3-1 and the adjacent two right half sheets 1-3 in a pair of piezoelectric ceramic sheets 1-3 The polarization direction of -2 is also opposite.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a bending vibration sandwich transducer type cylindrical double rotor ultrasonic motor which relates to the technical field of piezoelectric ultrasonic motors. The ultrasonic motor solves the problem in an existing ultrasonic motor that the mechanical output ability is restricted and a single stator only can realize single movement output. The bending vibration sandwich transducer type cylindrical double rotor ultrasonic motor of the invention comprises a stator component, an inside rotor component, an outside rotor component, a bearing block, a bearing and a bearing pre-tightening end cap, wherein continuous comb-shaped driving gears are manufactured on the inner surface of a cylinder, an inside rotor with a shaft and an inside rotor without the shaft are truncated cone-shaped, thin ends of the inside rotor with the shaft and the inside rotor without the shaft are respectively inserted on and under the cylinder, an outside rotor with the shaft and an outside rotor without the shaft are respectively installed on and under the stator component, wear resistance bush rings are respectively fixed on the side surfaces of the outside rotor with the shaft and theoutside rotor without the shaft, which are contacted with a stator rear end cap, and the inside rotor with the shaft is connected with the bearing block in a rotary mode through the bearing. The bending vibration sandwich transducer type cylindrical double rotor ultrasonic motor can be applied in the manufacture field of ultrasonic motors.

Description

technical field [0001] The invention relates to a bending-vibration sandwich transducer-type cylindrical double-rotor ultrasonic motor, which belongs 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 broad application prospects. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 刘军考刘英想陈维山谢涛石胜君
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products