JPS63213480A - Ultrasonic motor - Google Patents
Ultrasonic motorInfo
- Publication number
- JPS63213480A JPS63213480A JP62045705A JP4570587A JPS63213480A JP S63213480 A JPS63213480 A JP S63213480A JP 62045705 A JP62045705 A JP 62045705A JP 4570587 A JP4570587 A JP 4570587A JP S63213480 A JPS63213480 A JP S63213480A
- Authority
- JP
- Japan
- Prior art keywords
- traveling wave
- wave
- sheet
- ultrasonic motor
- section
- 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
- 230000001902 propagating effect Effects 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 239000013013 elastic material Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 230000000644 propagated effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/08—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using travelling waves, i.e. Rayleigh surface waves
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は超音波振動エネルギーを利用したモータに関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a motor that utilizes ultrasonic vibration energy.
（従来の技術）
進行波を応用した超音波モータは低速で高トルクが発生
する等の特徴を持ち、例えば特開昭５９−１２２３８５
には第２図に示す様なモータが提案されている。(Prior art) Ultrasonic motors that utilize traveling waves have the characteristics of generating high torque at low speeds.
A motor as shown in FIG. 2 has been proposed.
第２図においで弾性体２１にはＡ方向に伝幡する横波と
縦波との合成された進行波が励起されている。この弾性
体の表面に移動体２２を圧接すれば移動体はＢの方向へ
動く。In FIG. 2, a traveling wave that is a composite of a transverse wave and a longitudinal wave propagating in the A direction is excited in the elastic body 21. When the movable body 22 is pressed against the surface of this elastic body, the movable body moves in the direction B.
（発明が解決しようとする問題点）
しかし上記の様なモータでは純粋な進行波を励振するた
めに反射波の防止に特別な配慮をする必要が生じる０例
えば弾性板の両端部に進行波を完全に吸収するための特
殊な振動吸収体を接合する必要がある。(Problem to be solved by the invention) However, in the above-mentioned motor, in order to excite pure traveling waves, it is necessary to take special consideration to prevent reflected waves. It is necessary to attach a special vibration absorber to completely absorb it.
本発明はこの様な従来の欠点を除去せしめた紙送り用超
音波モータを提供することにある。The object of the present invention is to provide an ultrasonic motor for paper feeding which eliminates such conventional drawbacks.
（問題点を解決するための手段）
本発明は進行波が循環するリング状弾性体２枚を側面で
結合させた形状の弾性板を用いることを特徴とする。(Means for Solving the Problems) The present invention is characterized by using an elastic plate having a shape in which two ring-shaped elastic bodies through which traveling waves circulate are joined at the side surfaces.
（作用）
弾性体を上記の様に構成すると進行波が循環するので反
射波を抑圧するための特別な装置が不要となる。また、
進行波が途中２つの枝に分かれて同方向に伝播するので
、ここを紙の駆動部に用いれば幅の広い紙も安定して容
易に送ることができる。(Function) When the elastic body is configured as described above, the traveling waves circulate, so a special device for suppressing reflected waves becomes unnecessary. Also,
Since the traveling wave splits into two branches midway and propagates in the same direction, if this branch is used as a paper drive unit, even wide paper can be stably and easily fed.
第３図は進行波を励振するための方法を示している。弾
性板３１の裏面に厚み方向に一様に分極された圧電セラ
ミックス板３２が貼り合せられており、圧電セラミック
ス板には屈曲振動の半波長ピッチの突極が複数個設けら
れている（第３図（ａ））。電極群３３は第３図（ｂ）
に示す屈曲定在波振幅分布３７を励振するための電極で
、図示の様に接続して交流電源３５で駆動される。また
電極群３４は第３図（ｂ） ３Ｂに示す屈曲定在波を励
振するための電極群で交流電源３６に接続されている。FIG. 3 shows a method for exciting traveling waves. A piezoelectric ceramic plate 32 that is uniformly polarized in the thickness direction is bonded to the back surface of the elastic plate 31, and the piezoelectric ceramic plate is provided with a plurality of salient poles with a half-wavelength pitch of bending vibration (third Figure (a)). The electrode group 33 is shown in FIG. 3(b).
These electrodes are for exciting the bending standing wave amplitude distribution 37 shown in FIG. 3, and are connected as shown in the figure and driven by an AC power source 35. Further, the electrode group 34 is an electrode group for exciting a bending standing wave shown in FIG. 3(b) 3B, and is connected to an AC power source 36.
電源３５．３６にそれぞれ共振周波数の交流信号を印加
すると、位相差がπ／２の２つの定在波が励振され、こ
れは進行波となる。When alternating current signals with respective resonance frequencies are applied to the power supplies 35 and 36, two standing waves with a phase difference of π/2 are excited, which become traveling waves.
（実施例）
以下本発明の実施例について図面を参照しながら説明す
る。(Example) Examples of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例を示す図で、２つのリング状弾
性体１１が接している状態を示している。FIG. 1 is a diagram showing an embodiment of the present invention, and shows a state in which two ring-shaped elastic bodies 11 are in contact with each other.
Ｃの部分で横振動と縦振動の２つの成分を持つ進行波を
励振すると、この進行波は途中２つに分かれ、Ｄ、Ｅの
伝播路を伝播した後再びＣの部分で合流する。When a traveling wave with two components, transverse vibration and longitudinal vibration, is excited in part C, this traveling wave splits into two parts midway, propagates through propagation paths D and E, and then joins again in part C.
上記弾性板上に紙を設置し、進行波の伝播路りおよびＥ
上においてそれぞれ回転自由なローラーで紙を弾性体に
圧接すれば２つのローラーは回転しながら紙をおくるこ
とが出来る。A piece of paper is placed on the elastic plate, and the propagation path of the traveling wave and E
If the paper is pressed against the elastic body using rollers that can rotate freely at the top, the paper can be placed while the two rollers rotate.
（発明の効果）
本発明によれば振動吸収装置が不要な薄型゛の超音波に
よる紙送り機構が実現する。(Effects of the Invention) According to the present invention, a thin ultrasonic paper feeding mechanism that does not require a vibration absorbing device is realized.
第１図は本発明の実施例を示す図。第２図は従来の紙送
り用超音波モータの構成を示す図。第３図は進行波励振
方法を示す図。
図中、′１１・・・リング状弾性体、２１．３１・・・
弾性板、２２・・・紙、３２・・・圧電セラミックス板
、３３．３４・・・電極代理人 升哩１ 門原 首シ、
ＪＮ
（１，。
第１図
第２図FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a conventional paper feeding ultrasonic motor. FIG. 3 is a diagram showing a traveling wave excitation method. In the figure, '11...ring-shaped elastic body, 21.31...
Elastic plate, 22...Paper, 32...Piezoelectric ceramic plate, 33.34...Electrode agent 1 Kadohara Kushi,
JN (1,. Figure 1 Figure 2
Claims (1)
面で接するように配置した構造を備えたことを特徴とす
る超音波モータ。An ultrasonic motor characterized by having a structure in which two ring-shaped elastic bodies capable of propagating traveling waves are arranged so as to be in contact with each other at the side surfaces of the rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62045705A JPS63213480A (en) | 1987-02-27 | 1987-02-27 | Ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62045705A JPS63213480A (en) | 1987-02-27 | 1987-02-27 | Ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63213480A true JPS63213480A (en) | 1988-09-06 |
Family
ID=12726780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62045705A Pending JPS63213480A (en) | 1987-02-27 | 1987-02-27 | Ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63213480A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5155407A (en) * | 1989-12-08 | 1992-10-13 | Canon Kabushiki Kaisha | Vibration driven apparatus |
| US5583390A (en) * | 1989-12-12 | 1996-12-10 | Canon Kabushiki Kaisha | Vibration wave driven apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224880A (en) * | 1985-03-29 | 1986-10-06 | Canon Inc | Vibration wave motor |
-
1987
- 1987-02-27 JP JP62045705A patent/JPS63213480A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224880A (en) * | 1985-03-29 | 1986-10-06 | Canon Inc | Vibration wave motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5155407A (en) * | 1989-12-08 | 1992-10-13 | Canon Kabushiki Kaisha | Vibration driven apparatus |
| US5583390A (en) * | 1989-12-12 | 1996-12-10 | Canon Kabushiki Kaisha | Vibration wave driven apparatus |
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