JPS6477485A - Ultrasonic motor - Google Patents
Ultrasonic motorInfo
- Publication number
- JPS6477485A JPS6477485A JP62233850A JP23385087A JPS6477485A JP S6477485 A JPS6477485 A JP S6477485A JP 62233850 A JP62233850 A JP 62233850A JP 23385087 A JP23385087 A JP 23385087A JP S6477485 A JPS6477485 A JP S6477485A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- rotor
- square
- compressive stress
- vibrator
- 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
Links
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
PURPOSE:To obtain a motor having strong revolving torque by mounting an annulus ring circumscribed so as to apply static compressive stress bias to an arcuate vibrator, in which the four corner sections of a square board are cut off and the corner sections are inscribed in a circle. CONSTITUTION:A stator 11 is composed of a square-shaped vibrator 40, and electrodes 51 divided into four sections and electric terminals 52, 52' and 53, 53' are mounted respectively onto both the upper and lower surfaces of a square- shaped piezoelectric ceramic board uniformly polarized in the thickness direction. A rotor 12 is brought into contact with the stator 11 by bolts 13, accompanying static compressive stress bias. AC voltage, phase of which differs at 90 deg. mutually, is applied to the stator 11 in resonance frequency at a degenerating double mode, thus forcibly exciting elliptical vibrations in two contact surfaces in the four contact surfaces of the stator 11 and the rotor 12, then turning the rotor by strong revolving torque.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62233850A JPS6477485A (en) | 1987-09-18 | 1987-09-18 | Ultrasonic motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62233850A JPS6477485A (en) | 1987-09-18 | 1987-09-18 | Ultrasonic motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477485A true JPS6477485A (en) | 1989-03-23 |
Family
ID=16961550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62233850A Pending JPS6477485A (en) | 1987-09-18 | 1987-09-18 | Ultrasonic motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477485A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5130599A (en) * | 1988-05-26 | 1992-07-14 | Kohzi Toda | Vibrator-type actuator |
US5300851A (en) * | 1991-10-31 | 1994-04-05 | Matsushita Electric Industrial Co., Ltd. | Linear-type actuator |
US5719462A (en) * | 1993-02-05 | 1998-02-17 | Nikon Corporation | Ultrasonic motor having improved stator |
Citations (3)
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 |
-
1987
- 1987-09-18 JP JP62233850A patent/JPS6477485A/en active Pending
Patent Citations (3)
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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5130599A (en) * | 1988-05-26 | 1992-07-14 | Kohzi Toda | Vibrator-type actuator |
US5300851A (en) * | 1991-10-31 | 1994-04-05 | Matsushita Electric Industrial Co., Ltd. | Linear-type actuator |
US5719462A (en) * | 1993-02-05 | 1998-02-17 | Nikon Corporation | Ultrasonic motor having improved stator |
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