T-shaped linear ultrasonic motor oscillator

A linear ultrasonic motor and vibrator technology, which is applied in the directions of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem of low electromechanical coupling efficiency and mechanical output capability of piezoelectric ultrasonic motors. Constraints, poor mechanical output capability, etc., to achieve the effect of simple structure, high electromechanical coupling efficiency, and improved amplitude and vibration speed
CN101630924BInactive Publication Date: 2011-07-20HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-07-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a T-shaped linear ultrasonic motor oscillator, which relates to the technical field of a piezoelectric ultrasonic motor and aims at solving the problem that the mechanical output capacity of the prior ultrasonic motor stator is limited. T-shaped front end covers of the T-shaped linear ultrasonic motor oscillator are combined by small end surfaces of three amplitude rods and are arranged in a T shape, a drive foot is connected with a connection position of the amplitude rods, and the three amplitude rods and the drive foot form an integral member; piezoelectric ceramicsare polarized along the thickness direction, and opposite to the polarization direction of every adjacent two pieces of piezoelectric ceramics on the same amplitude rod, the polarization ways of the piezoelectric ceramics of two amplitude rods on the same axial line are opposite, each fastening screw passes through a back end cover, the piezoelectric ceramics and a flange and is connected to a blind hole, and the piezoelectric ceramics and the flange are positioned between the back end cover and the amplitude rod, and a piece of electrode plate is arranged between the piezoelectric ceramics and the flange; and an insulating sleeve is fixed outside the fastening screw. The invention is applied to the manufacture field of the ultrasonic motor.
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Description

technical field

[0001] The invention relates to a T-shaped linear ultrasonic motor vibrator, 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 wide range of applications.

[0003] Due to the simplicity of the excita...

Claims

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