JPS6477486A - Ultrasonic motor - Google Patents

Ultrasonic motor

Info

Publication number
JPS6477486A
JPS6477486A JP62233851A JP23385187A JPS6477486A JP S6477486 A JPS6477486 A JP S6477486A JP 62233851 A JP62233851 A JP 62233851A JP 23385187 A JP23385187 A JP 23385187A JP S6477486 A JPS6477486 A JP S6477486A
Authority
JP
Japan
Prior art keywords
vibrator
stator
rotor
compressive stress
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62233851A
Other languages
Japanese (ja)
Inventor
Osamu Onishi
Osamu Myoga
Takeshi Inoue
Sadayuki Takahashi
Tadayasu Uchikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62233851A priority Critical patent/JPS6477486A/en
Publication of JPS6477486A publication Critical patent/JPS6477486A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a motor having strong revolving torque by installing an arcuate vibrator, which takes a cross shape symmetrical with respect to its center and four nose sections of which are inscribed in a circle, and an annulus ring circumscribed with the vibrator so as to apply static compressive stress bias. CONSTITUTION:A stator 11 is composed of a in-longitudianl-plane flexural double mode vibrator, divided electrodes 51 are formed onto each contact finger surface of the crossed vibrator and the same electrodes as the surface are also shaped onto the rear of the vibrator, and electric terminals 52, 52' and 53, 53' are mounted. A rotor 12 is brought into contact with the stator 11 by bolts 13, accompanying static compressive stress bias at all times. AC signals, phase of which differs at 90 deg. in the resonance frequency of a degenerating double mode vibrator, are input to the stator 11, thus forcibly exciting elliptical vibrations in four contact surfaces between the stator 11 and the rotor 12. Accordingly, the rotor 12 can be turned by strong revolving torque.
JP62233851A 1987-09-18 1987-09-18 Ultrasonic motor Pending JPS6477486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62233851A JPS6477486A (en) 1987-09-18 1987-09-18 Ultrasonic motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62233851A JPS6477486A (en) 1987-09-18 1987-09-18 Ultrasonic motor

Publications (1)

Publication Number Publication Date
JPS6477486A true JPS6477486A (en) 1989-03-23

Family

ID=16961568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62233851A Pending JPS6477486A (en) 1987-09-18 1987-09-18 Ultrasonic motor

Country Status (1)

Country Link
JP (1) JPS6477486A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033645A3 (en) * 1999-10-31 2001-11-01 Nanomotion Ltd Piezoelectric motors and motor driving configurations
JP2008245507A (en) * 2007-02-28 2008-10-09 Konica Minolta Opto Inc Friction drive actuator
JP2008283756A (en) * 2007-05-09 2008-11-20 Sharp Corp Ultrasonic motor
CN102931875A (en) * 2012-11-22 2013-02-13 哈尔滨工业大学 SMD square ultrasonic motor vibrator and driving method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185078A (en) * 1984-10-02 1986-04-30 Ngk Spark Plug Co Ltd Rotary driver
JPS61170285A (en) * 1985-01-24 1986-07-31 Matsushita Electric Works Ltd Piezoelectric linear motor
JPS62126872A (en) * 1985-11-25 1987-06-09 Matsushita Electric Works Ltd Piezoelectric motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185078A (en) * 1984-10-02 1986-04-30 Ngk Spark Plug Co Ltd Rotary driver
JPS61170285A (en) * 1985-01-24 1986-07-31 Matsushita Electric Works Ltd Piezoelectric linear motor
JPS62126872A (en) * 1985-11-25 1987-06-09 Matsushita Electric Works Ltd Piezoelectric motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033645A3 (en) * 1999-10-31 2001-11-01 Nanomotion Ltd Piezoelectric motors and motor driving configurations
US6979936B1 (en) 1999-10-31 2005-12-27 Nanomotion Ltd. Piezoelectric motors and motor driving configurations
US7199507B2 (en) 1999-10-31 2007-04-03 Nanomotion Ltd. Piezoelectric motors and motor driving configurations
JP2008245507A (en) * 2007-02-28 2008-10-09 Konica Minolta Opto Inc Friction drive actuator
JP2008283756A (en) * 2007-05-09 2008-11-20 Sharp Corp Ultrasonic motor
CN102931875A (en) * 2012-11-22 2013-02-13 哈尔滨工业大学 SMD square ultrasonic motor vibrator and driving method thereof

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