Cylinder non-contact ultrasound electric machine

An ultrasonic motor, non-contact technology, applied in the direction of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve complex structure, service life and operating speed limitations, high cost, etc. problem, to achieve the effect of high speed and long life

Inactive Publication Date: 2005-04-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the service life and the operating speed are limited, so the materials of the stator

Method used

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  • Cylinder non-contact ultrasound electric machine

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Embodiment Construction

[0008] The invention is a novel ultrasonic motor developed based on the use of piezoelectric ceramic sheets to excite B(0,3) mode acoustic radiation pressure and acoustic viscous stress of a cylindrical stator.

[0009] It mainly consists of a stator assembly, a rotor assembly and a bracket assembly. figure 1 It is a schematic diagram of the specific structure of the present invention. It can be seen from the figure that the stator assembly of the motor is composed of a stator base 10 and four pieces of piezoelectric ceramics 7 pasted in four evenly distributed rectangular grooves on the outer surface of the stator base, and placed on the base 12 and The gasket 4 in the cover plate 2 is transition fit; the rotor base 8 of the rotor assembly with a certain gap between the stator assembly and the stator assembly is installed on the output shaft 9 through the bushing 11, and the output shaft 9 is installed on the cover plate 2 and the cover plate 2 through a pair of bearings 1. O...

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Abstract

The present invention is cylindrical non-contact ultrasonic motor, and belongs to the field of miniature motor. The motor consists of stator, rotor and seat. The motor stator consists of stator base body and piezoelectric ceramic adhered together. The motor rotor consists of rotor base body, one pair of shaft sleeve and shaft. The motor seat consists of cover plate, pedestal, sleeve, one pair of washers, one pair of bearings, screw, nut, etc. When some AC voltage in ultrasonic frequency range is applied, the stator generates ultrasonic vibration, the rotor is rotated via adhesive force, and the power is output via the shaft. The motor has the advantages of high rotation speed, long service life, simple structure, low cost, etc.

Description

Technical field: [0001] The cylindrical non-contact ultrasonic motor of the invention belongs to the ultrasonic motor in the field of micro and special motors. Background technique: [0002] Ultrasonic motor is a new type of micro motor using the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration. The existing contact ultrasonic motor drives the rotor to rotate through the friction force between the stator and the rotor, and there is friction loss between the stator and the rotor. Both the service life and the operating speed are limited, and the materials of the stator and the rotor are required to have high wear resistance, high cost and complicated structure. Invention content: [0003] The object of the present invention is to develop a cylindrical non-contact ultrasonic motor with high speed, long life, simple structure, low cost and practicality. [0004] In order to achieve the above purpose, the cylindrical non-contact ultrasonic moto...

Claims

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Application Information

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IPC IPC(8): H02N2/12
Inventor 赵淳生季叶
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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