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Sandwich t-type bipedal linear piezoelectric ultrasonic motor vibrator

A piezoelectric ultrasonic, sandwich-type technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of complex driving methods, idle and waste of vibration energy, etc. Achieve the effect of simple excitation method, simple processing and assembly, and simplified structure

Active Publication Date: 2016-03-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sandwich type T-type biped linear piezoelectric ultrasonic motor vibrator in order to solve the problems of idle waste of vibration energy, complicated driving method and vibration coupling in the existing T-shaped linear ultrasonic motor vibrator

Method used

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  • Sandwich t-type bipedal linear piezoelectric ultrasonic motor vibrator
  • Sandwich t-type bipedal linear piezoelectric ultrasonic motor vibrator
  • Sandwich t-type bipedal linear piezoelectric ultrasonic motor vibrator

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specific Embodiment approach 1

[0015] Specific implementation mode one: the following combination figure 1 and figure 2 Describe this embodiment, the sandwich-type T-shaped biped linear piezoelectric ultrasonic motor vibrator in this embodiment includes a vertical beam 1, 2n piezoelectric ceramic sheets 2, two horns 3 and 2n electrode sheets 4 , wherein, n is an even number greater than or equal to 2; the left and right sides of the vertical beam 1 are each provided with a stud 1-1, and the two studs 1-1 are coaxial, and the horn 3 is a section A tapered block; each of the studs 1-1 is fitted with n pieces of piezoelectric ceramics 2, and the two horns 3 are respectively screwed on the two studs 1 through the threaded holes on their large end faces. On -1, the fastening of the piezoelectric ceramic sheet 2 is realized; electrode sheets 4 are arranged between two adjacent piezoelectric ceramic sheets 2, between the piezoelectric ceramic sheet 2 and the horn 3; all piezoelectric ceramic sheets The ceramic...

specific Embodiment approach 2

[0017] Specific implementation mode two: the following combination figure 2 This embodiment will be described, and this embodiment will further describe the first embodiment, the vertical beam 1 and the two studs 1 - 1 are integrated.

[0018] In this embodiment, the vertical beam 1 and the two studs 1-1 are integrated to simplify the processing and assembly process.

specific Embodiment approach 3

[0019] Specific implementation mode three: the following combination figure 2 This embodiment will be described. This embodiment will further describe Embodiment 1. The cross-sections of the piezoelectric ceramic sheet 2 and the horn 3 are square, and the cross-section of the piezoelectric ceramic sheet 2 is the same as the cross-section of the large end of the horn 3. Sections are equal.

[0020] In this embodiment, the cross-section of the piezoelectric ceramic sheet 2 is equal to the cross-section of the large end of the horn 3, which is beneficial to the efficient excitation of the longitudinal vibration.

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Abstract

The invention discloses a sandwich type T type two-foot straight line piezoelectric ultrasonic motor oscillator and belongs to the field of piezoelectric ultrasonic motors. The sandwich type T type two-foot straight line piezoelectric ultrasonic motor oscillator aims at solving the problems that vibration energy is left unused and wasted, a driving method is complicated, and vibration coupling exists in an existing T type straight line ultrasonic motor oscillator. The sandwich type T type two-foot straight line piezoelectric ultrasonic motor oscillator comprises a vertical girder, 2n piezoelectric ceramic pieces, two amplitude-change poles and 2n electrode plates, wherein n is an even number which is larger than or equal to 2. The left side face and the right side face of the vertical girder are respectively provided with a stud, wherein the two studs are coaxial. The amplitude-change poles are block bodies with the sections gradually thinner, and each stud is sleeved with the n piezoelectric ceramic pieces. The two amplitude-change poles are screwed on the two studs respectively through threaded holes in the large end faces of the amplitude-change poles so as to firmly fix the piezoelectric ceramic pieces. The electrode plates are arranged between every two adjacent piezoelectric ceramic pieces and between the piezoelectric ceramic pieces and the amplitude-change poles. All the piezoelectric ceramic pieces are polarized in the direction of the axes of the studs, and the polarization directions of every two adjacent piezoelectric ceramic pieces are opposite. The sandwich type T type two-foot straight line piezoelectric ultrasonic motor oscillator is applied to a piezoelectric ultrasonic motor.

Description

technical field [0001] The invention relates to a sandwich-type T-shaped two-leg linear piezoelectric ultrasonic motor vibrator, which belongs to the 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 simple structure, flexible design, low speed, high torque / thrust, high power / torque density, high positioning accuracy, fast response speed, and self-locking when power is off. , No electromagnetic interference and not subject to elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
Inventor 刘英想陈维山冯培连刘军考石胜君
Owner HARBIN INST OF TECH
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