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Electrode segmentation type single drive and two-way piezoelectric motor

A piezoelectric motor and electrode segmentation technology, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of limited application and bulky piezoelectric motor system , to achieve the effect of simple structure, reduced size and power consumption, and simple power drive

Inactive Publication Date: 2011-04-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the traditional piezoelectric motor uses two sets of piezoelectric sheets to control forward and reverse rotation, and each set of piezoelectric sheets requires a circuit drive, the volume of the piezoelectric motor system will become large, which limits its application in the field of precision machinery. application

Method used

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  • Electrode segmentation type single drive and two-way piezoelectric motor
  • Electrode segmentation type single drive and two-way piezoelectric motor
  • Electrode segmentation type single drive and two-way piezoelectric motor

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Embodiment Construction

[0026] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the electrode split type single-drive bidirectional piezoelectric motor of the present invention includes a stator and a rotor that can rotate relative to the stator. The stator can be fixed by clamping or by the base 1 that is fixedly connected to the stator. The drive body 3 The central hole 8 runs through the base 1; the stator includes a driving body 3 with a central hole 8 and a piezoelectric sheet 2 bonded to the plane on one side of the driving body 3 by glue; the rotor includes a rotating body 5 passing through the central hole 8 of the driving body 3 And the cap body 4 that is fixedly connected with one end of the rotating body 5; the cap body 4 is in contact with the driving body 3, and there is a gap between the rotating body 5 and the center hole 8 of the driving body 3; the piezoelectric sheet 2 includes two mutually independent Piezoelectric sheet is piezoelectric sheet E 1 and piezoelectr...

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Abstract

The present invention discloses an electrode segmentation type single drive and two-way piezoelectric motor, comprising a stator and a rotor rotating relative to the stator; the stator comprises a driving body with a centre hole and a piezoelectric sheet connected to one side of the driving body by an interfacial force; the rotor comprises a rotating body penetrating through the centre hole of the driving body and a cap fixedly connected to one end of the rotating body; the cap is contacted with the driving body; a gap is disposed between the rotating body and the wall of the centre hole of the driving body; the piezoelectric sheet comprises two mutually independent piezoelectric sheets or two piezoelectric sheet areas separated by the gap. The volume of the piezoelectric motor is small, and the power consumption is low; and the piezoelectric plays an important role in microminiaturization of piezoelectric motor.

Description

technical field [0001] The invention relates to the field of piezoelectric motors, in particular to an electrode split type single-drive bidirectional piezoelectric motor. Background technique [0002] Ultrasonic Motor (Ultrasonic Motor), referred to as USM, is a motor that uses the inverse piezoelectric effect to convert electrical energy to mechanical energy; it is generally composed of stators, rotors and other components. The surface particles of the stator in contact with the rotor produce elliptical motion, which leads to relative motion between the surface particles of the stator and the rotor. With the help of the friction force on the rotor surface, a unidirectional sliding friction occurs between the stator and the rotor, and finally drives the rotor to move. In view of the fact that the mechanical vibration of the stator is generated by the piezoelectric material according to the inverse piezoelectric effect, the ultrasonic motor is also called the piezoelectric m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 邢增平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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