Ultrasonic motor for monitor cradle

An ultrasonic motor and monitor technology, applied in the direction of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve problems such as winding, and achieve reliable transmission and stable support movement. Effect

Inactive Publication Date: 2009-07-08
JIANGSU FENGKE ULTRASONIC MOTORS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Compared with the existing ultrasonic motor, the present invention has the following advantages: the first axis is hollow and can pass through wires, which solves the problem of winding when the pan / tilt rotates

Method used

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  • Ultrasonic motor for monitor cradle
  • Ultrasonic motor for monitor cradle
  • Ultrasonic motor for monitor cradle

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Effect test

Embodiment Construction

[0009] As can be seen from Figure 1, the structure of the ultrasonic motor used for a single monitor pan / tilt is that the bearing cap 1 is connected to the upper end surface of the housing 3 by screws, the piezoelectric ceramic sheet 12 is pasted on the upper surface of the stator 4, and the stator 4 is placed in the housing. The body is installed on the boss in the middle of the upper end of the housing 3 through screws, the rotor 5 placed under the stator 4 is fixed on the output shaft 13, and a gasket 10 is installed between the spring leaf 11 installed on the output shaft and the rotor 5 , the upper and lower ends of the output shaft 13 are respectively supported on the bearing cover 1 and the base 8 through bearings, so that the movement is more stable and reliable. The output shaft 13 is hollow and can pass through wires, which solves the problem of winding when the pan / tilt rotates. The outer diameter of the shaft There is a pair of symmetrical keyways, as shown in Figur...

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Abstract

An ultrasonic motor for a monitor pan-tilt. The motor is composed of a rotor (5), a stator (4), a leaf spring (11), a hollow shaft (13), a piezoelectric ceramic sheet (12) and the like. The stator (4) is fixed on the casing (3) by screws (6), the rotor (5) relies on the deformation of the spring sheet (11) to generate pre-pressure to press on the stator, and the thickness of the adjusting washer (9) determines the deformation of the spring The amount also determines the size of the pre-pressure. The rotor and the leaf spring, as well as the spring leaf and the shaft are transmitted through a keyway connection, and the shaft (13) is fixedly supported by bearings (2 and 7) at both ends. When the piezoelectric ceramic sheet (12) on the stator of the motor is fed with a sinusoidal excitation signal with a two-phase phase difference of 90 degrees, the particles on the surface of the stator make an elliptical motion to push the rotor to rotate. With low speed, no noise, simple structure, hollow, good start and stop characteristics, it is especially suitable as the driving part of the monitor pan / tilt.

Description

Technical field: [0001] The ultrasonic motor for monitor pan-tilt of the present invention belongs to the ultrasonic motor in the field of micro 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 patent No. ZL 98 1 11421.0 has poor reliability and stability due to the use of friction transmission, and is also not suitable for application on the monitor pan / tilt. Invention content: [0003] The purpose of the present invention is to develop a traveling-wave ultrasonic motor suitable for monitor pan-tilts with low speed, simple structure, fast response speed and hollow output shaft. [0004] The composition of the ultrasonic motor is that the bearing cover is connected to the upper end surface of the housing, the lower end surface of the housing is in contact with the base, the stator with piezoelectric ceramic sheets pasted on the surface is plac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/10
Inventor 赵淳生梁操黄卫清
Owner JIANGSU FENGKE ULTRASONIC MOTORS TECH
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