Cross-shaped section beam type paster double-foot ultrasonic motor vibrator

An ultrasonic motor, cross-shaped technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the difficulties of miniaturization, complex processing and assembly, high processing precision, etc. problems, to achieve the effect of easy miniaturization, convenient processing and assembly, and low processing precision requirements

Active Publication Date: 2015-04-22
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 solve the problems existing in the existing orthogonal bending vibration sandwich type ultrasonic motors, such as complex processing and assembly, high processing precision requirements, and difficult miniaturization. The present invention provides a cross-section beam type patch double Foot Ultrasonic Motor Vibrator

Method used

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  • Cross-shaped section beam type paster double-foot ultrasonic motor vibrator
  • Cross-shaped section beam type paster double-foot ultrasonic motor vibrator
  • Cross-shaped section beam type paster double-foot ultrasonic motor vibrator

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specific Embodiment approach 1

[0023] Specific implementation mode 1, refer to figure 1 , figure 2 with Figure 4 Specifically explain this embodiment, the cross-section beam-type patch biped ultrasonic motor vibrator described in this embodiment includes a middle beam 1, two horns 2, two driving feet 3 and eight piezoelectric ceramic sheets 4;

[0024] The cross-section of the middle beam 1 is cross-shaped, the cross-section of the horn 2 is also cross-shaped, and the cross-section of the horn 2 gradually becomes smaller from the head end to the end, and the two horns 2 are respectively fixed in the middle The two ends of the beam 1; the driving foot 3 is arranged on the top of the small end of the horn 2; the middle beam 1, the two horns 2 and the two driving feet 3 are integrated;

[0025] The eight piezoelectric ceramic sheets 4 are sequentially fixed on eight sides of the middle beam 1; the eight piezoelectric ceramic sheets 4 are all polarized along the thickness direction; the middle beam 1 is co...

specific Embodiment approach 2

[0029] Specific implementation mode two, refer to figure 1 , figure 2 with Figure 5 Specifically explain this embodiment, the cross-section beam-type patch biped ultrasonic motor vibrator described in this embodiment includes a middle beam 1, two horns 2, two driving feet 3 and eight piezoelectric ceramic sheets 4;

[0030] The cross-section of the middle beam 1 is cross-shaped, the cross-section of the horn 2 is also cross-shaped, and the cross-section of the horn 2 gradually becomes smaller from the head end to the end, and the two horns 2 are respectively fixed in the middle The two ends of the beam 1; the driving foot 3 is arranged on the top of the small end of the horn 2; the middle beam 1, the two horns 2 and the two driving feet 3 are integrated;

[0031]The eight piezoelectric ceramic sheets 4 are sequentially fixed on the eight sides of the middle beam 1; the eight piezoelectric ceramic sheets 4 are all polarized along the thickness direction; the four piezoele...

specific Embodiment approach 3

[0033] Specific implementation mode three, refer to figure 1 figure 2 with image 3 Describe this embodiment. This embodiment is a further description of the cross-section beam-type patch biped ultrasonic motor vibrator described in the first or second specific embodiment. In this embodiment, it also includes four bosses 5, so The four bosses 5 are sequentially fixed at the four angles of the middle beam 1, and the thickness of the bosses 5 is greater than the thickness of the piezoelectric ceramic sheet 4. The middle beam 1, the two horns 2, and the two driving Foot 3 and boss 5 are one piece.

[0034] The four bosses can prevent the mutual interference of two adjacent piezoelectric ceramic sheets; the integrated mechanism design can also facilitate the processing and assembly of the vibrator.

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Abstract

The invention discloses a cross-shaped section beam type paster double-foot ultrasonic motor vibrator and belongs to the technical field of piezoelectric ultrasonic motors. The cross-shaped section beam type paster double-foot ultrasonic motor vibrator resolves the problems that an existing orthogonal bending vibration sandwiched ultrasonic motor is complex in machining and assembly, is high in machining accuracy requirement and can not realize a small size easily, enables machining and assembly to be easy, and can realize a small size conveniently. The vibrator comprises a middle beam, two amplitude-change poles, four bosses, eight piezoelectric ceramic pieces and two driving feet, wherein the section from the head end to the tail end of each amplitude-change pole is gradually decreased, and the eight piezoelectric ceramic pieces are sequentially fixed to eight lateral surfaces of the middle beam and polarized in the thickness direction. The cross-shaped section beam type paster double-foot ultrasonic motor vibrator is suitable for the field of manufacturing of ultrasonic motors.

Description

technical field [0001] The invention relates to a cross-section beam-type patch biped ultrasonic motor vibrator, which belongs to the technical field of piezoelectric ultrasonic motors. Background technique [0002] The piezoelectric ultrasonic motor uses the inverse piezoelectric effect of piezoelectric ceramics to convert electrical energy into mechanical energy. The piezoelectric ceramics excites micro-amplitude mechanical vibrations in the stator elastic body, forming a driving trajectory in the driving area (generally an elliptical motion trajectory) Or oblique motion trajectory), and then realize the macroscopic motion output of the rotor through the friction between the stator and the rotor. Ultrasonic motors have the advantages of low speed and high torque, no electromagnetic interference, fast response, self-locking when power is off, and no need for bearings and lubrication. [0003] Existing ultrasonic motor vibrators generally use composite special-shaped vibrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/04
Inventor 刘英想徐冬梅刘军考陈维山
Owner HARBIN INST OF TECH
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