JPS61173683A - Supersonic drive motor - Google Patents
Supersonic drive motorInfo
- Publication number
- JPS61173683A JPS61173683A JP60013686A JP1368685A JPS61173683A JP S61173683 A JPS61173683 A JP S61173683A JP 60013686 A JP60013686 A JP 60013686A JP 1368685 A JP1368685 A JP 1368685A JP S61173683 A JPS61173683 A JP S61173683A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- rotor
- force
- drive motor
- magnetic coupling
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000000284 extract Substances 0.000 claims description 2
- 229910000828 alnico Inorganic materials 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005906 menstruation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect 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
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
- H02N2/163—Motors with ring stator
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は超音波振動を駆動源とした超音波駆動モータ
或いは超音波リニヤモータに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an ultrasonic drive motor or an ultrasonic linear motor using ultrasonic vibration as a driving source.
従来の技術
超音波を利用したモータに関してはすでに特開昭５８−
１９２４７４号公報或いは、特開昭５８−１９２４７５
号公報で各種の構造に関するものが提唱されている。さ
らに指田氏より月経メカニカル５８年２月２８日号或い
は応用物理５７年８月号等で超音波モータに関しての実
用化に近い構造が提唱されている。しかし、各種の欠点
を有するため今日時点で未だに実用化の報告はない。超
音波モータの特徴として構造が単純である事、構成部品
点数が少ない事の特徴を積極的に生かすならば、従来の
電磁力を利用したモータにない特徴が出る筈であり、現
時点迄はその様な構成の超音波モータは実現していない
。Conventional technology Motors using ultrasonic waves have already been published in Japanese Patent Application Laid-open No. 58-
Publication No. 192474 or Japanese Unexamined Patent Publication No. 192475/1983
The publications related to various structures are proposed. Furthermore, Mr. Sashida proposed a structure close to practical use for an ultrasonic motor in the February 28, 1958 issue of Menstruation Mechanical, or the August 1957 issue of Applied Physics. However, as of today, there have been no reports of practical use due to various drawbacks. If the characteristics of ultrasonic motors, such as their simple structure and small number of component parts, are actively utilized, they should have features that conventional motors that use electromagnetic force do not have. An ultrasonic motor with a similar configuration has not yet been realized.
超音波モニタは超音波の振動源となるステータと、さら
にステータの振動成分の中から回転成分を取り出すため
のロータから成り立っている。いま超音波モータのステ
ータ、ロータ間の機械エネルギーのやりとりは、ステー
タの一面と、ロータの一面とが機械的な接触を行ない、
両面の摩擦によって力のやりとシを行なって回転力を得
ている。An ultrasonic monitor consists of a stator that serves as a source of ultrasonic vibration, and a rotor that extracts rotational components from the vibration components of the stator. Currently, the exchange of mechanical energy between the stator and rotor of an ultrasonic motor involves mechanical contact between one side of the stator and one side of the rotor.
Rotational force is obtained by applying force through friction on both sides.
一般的な構成例ではステータの振動振巾は１μｍ内外と
非常に小さいものである。いまステータ、ロータ両面の
平面精度が機械振巾の精度以上にない場合は超音波モー
タの回転は一様に行なわれず、時には回らない場合も生
ずる。In a typical configuration, the vibration amplitude of the stator is very small, around 1 μm. If the flatness accuracy of both the stator and rotor is not higher than the accuracy of the machine width, the ultrasonic motor will not rotate uniformly, and sometimes will not rotate at all.
発明が解決しようとする問題点
従来の技術は平面性を良くして両面が確実に接触する事
に重きを置いてきた。次に両面に過重をかけて機械的に
おしつけて、両面の接触を計ってきた。しかし、これら
の方法は一つはコスト上昇をまねく事と、余分の損失が
生じる事で、これらの解決を望まれてきた。Problems to be Solved by the Invention Conventional techniques have placed emphasis on improving flatness and ensuring that both surfaces are in contact. Next, we applied excessive weight to both sides and mechanically pressed them together to measure the contact between the two sides. However, these methods lead to increased costs and additional losses, and a solution to these problems has been desired.
問題点を解決するだめの手段
本発明は上記問題点を解決するために、ステータ、ロー
タ間に一様な過重を印加するために磁気的な結合力を利
用したものである。すなわち、ステータを、駆動力を発
生するための圧電体と磁気的な結合力を発生させるだめ
の磁性体とを接着して構成し、それらの複合体を振動子
として、動作させる。一方ロータは、ステータとの磁気
的な結合力を生じさせるため、永久磁石の特性を有する
、アルニコ、フェライト等の材料で構成され、ステータ
、ロータ間に互いに、磁気的結合力を持たせる。一方逆
にロータを単なる磁性体とし、ステータに永久磁石を用
いても良い。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention utilizes magnetic coupling force to apply uniform load between the stator and rotor. That is, the stator is constructed by bonding a piezoelectric material for generating a driving force and a magnetic material for generating a magnetic coupling force, and the composite body thereof is operated as a vibrator. On the other hand, the rotor is made of a material such as alnico or ferrite, which has permanent magnet characteristics, in order to generate a magnetic bonding force with the stator, and provides a mutual magnetic bonding force between the stator and the rotor. On the other hand, the rotor may be a mere magnetic body and the stator may be a permanent magnet.
作 用
磁気結合力によりステータとロータの良好な圧接状態が
得られ、摩擦力が確実に作用する。The working magnetic coupling force provides good pressure contact between the stator and rotor, and the frictional force acts reliably.
実施例 第１図は本発明の超音波振動モータの一実施例を示す。Example FIG. 1 shows an embodiment of the ultrasonic vibration motor of the present invention.
第１図において１ａはステータ振動部を示し、１ｂは圧
電体を示す。２はロータ部を、３はステータ、ロータの
回転を固定するだめの支持部を示す。いまステータ振動
部１ａを磁石材料例えばアルニコ材で構成し、ロータ部
２を軟鉄材で構成するならば、ロータ、ステータ間に磁
気的な結合力が働き、ロータ部に回転力が効果的に伝達
される。In FIG. 1, 1a indicates a stator vibrating section, and 1b indicates a piezoelectric body. 2 is a rotor portion, 3 is a stator, and a support portion for fixing rotation of the rotor. If the stator vibrating section 1a is made of a magnetic material, such as alnico material, and the rotor section 2 is made of soft iron, a magnetic coupling force will work between the rotor and the stator, and rotational force will be effectively transmitted to the rotor section. be done.
超音波モータの駆動原理として、ステータの振動の波の
伝播方向の動きを、ロータが摩擦力を介して受は取る。The driving principle of an ultrasonic motor is that the rotor receives the movement of the stator in the wave propagation direction through frictional force.
摩擦力はロータ、ステータ間の接触圧及び摩擦係数で決
まる。Frictional force is determined by the contact pressure between the rotor and stator and the coefficient of friction.
いまステータ、或いはロータの一部が平面でなく若干ひ
ずんでいる場合甑、ロータ、ステータ間は全面が接触し
ない。そのため、ロータ、ステータが超音波モータ固有
の振動以外のリング固有の可聴音（不用音）を発生する
。第２図ａは１０ＫＨｚ およびそのオーバートーン
の不用雑音の音圧レベルを発生したさいの超音波のパワ
ースペクトラムを示す。第２図すは第１図の構成におい
て、ステータ部に５４６Ｃ鉄を用い、ロータ部にバリウ
ムフェライト（２ＴＭｎ厚）を用いた時のパワースペク
トラムを示す。第２図すにおいて、５５ＫＨｚのスペク
トルは、超音波モータ駆動周波数を示す。If part of the stator or rotor is not flat and slightly distorted, the entire surface of the stator, rotor, and stator will not come into contact with each other. Therefore, the rotor and stator generate audible sounds (unwanted sounds) unique to the ring other than vibrations unique to the ultrasonic motor. FIG. 2a shows the power spectrum of an ultrasonic wave when a sound pressure level of unwanted noise of 10 KHz and its overtones is generated. FIG. 2 shows the power spectrum when 546C iron is used for the stator section and barium ferrite (2TMn thickness) is used for the rotor section in the configuration shown in FIG. 1. In FIG. 2, the 55 KHz spectrum indicates the ultrasonic motor drive frequency.
不用雑音が極めて良好に抑制されていることがわかる。It can be seen that unnecessary noise is suppressed extremely well.
本発明による超音波振動モータで、無負荷回転数として
１８００ ｒ 、ｐ、ｍ 、静止トルクとして、６００
ｆ−（７）が得られた。The ultrasonic vibration motor according to the present invention has a no-load rotation speed of 1800 r, p, m and a static torque of 600
f-(7) was obtained.
なお、上記実施例では、回転力を発生するモータを示し
たが、直線駆動力を発生するリニアモータにも同様に、
本発明思想は適用できる〇発明の効果
本発明によれば、きわめて簡易な構成で超音波駆動モー
タを安定にかつ雑音の発生を生ぜずに回転する事が出来
、実用的にきわめて有効である。In the above embodiment, a motor that generates rotational force is shown, but a linear motor that generates linear driving force can also be used.
The idea of the present invention can be applied. Effects of the Invention According to the present invention, an ultrasonic drive motor can be rotated stably and without generating noise with an extremely simple configuration, and is extremely effective in practice.
第１図は本発明の一実施例における超音波駆動モータの
構成を示す分解斜視図、第２図ａは、従−タにおける超
、音波パワースペクトラムを示す図である。
１ａ・・・・・・ステータ振動部、１ｂ・・・・・・圧
電体、２・・・・・・ロータ部、３・・・・・・支持部
。FIG. 1 is an exploded perspective view showing the configuration of an ultrasonic drive motor in an embodiment of the present invention, and FIG. 2a is a diagram showing the ultrasonic and sonic power spectrum in the follower. 1a... Stator vibrating part, 1b... Piezoelectric body, 2... Rotor part, 3... Supporting part.
Claims (1)
源とするステータ及び前記ステータに当接し摩擦を介し
て駆動力を取り出すための摺動体のいずれか一方を永久
磁石を含んで構成するとともに、他方を磁化しやすい材
料を用いて構成し、前記ステータと摺動体間に磁気的な
結合力を作用させた事を特徴とする超音波駆動モータ。(1) Either one of a stator that performs ultrasonic vibration and uses the vibration energy as a driving source, and a sliding body that contacts the stator and extracts driving force through friction, includes a permanent magnet, and An ultrasonic drive motor characterized in that the other is made of a material that is easily magnetized, and a magnetic coupling force is applied between the stator and the sliding body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60013686A JPS61173683A (en) | 1985-01-28 | 1985-01-28 | Supersonic drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60013686A JPS61173683A (en) | 1985-01-28 | 1985-01-28 | Supersonic drive motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61173683A true JPS61173683A (en) | 1986-08-05 |
Family
ID=11840069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60013686A Pending JPS61173683A (en) | 1985-01-28 | 1985-01-28 | Supersonic drive motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61173683A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315272A (en) * | 1988-06-10 | 1989-12-20 | Murata Mfg Co Ltd | Piezoelectric motor |
| JPH02214476A (en) * | 1989-02-14 | 1990-08-27 | Matsushita Electric Ind Co Ltd | Ultrasonic motor |
| KR20040085425A (en) * | 2003-03-31 | 2004-10-08 | 주식회사 대우일렉트로닉스 | Refrigerator compressibility that use piezoelectric moter |
| CN103742428A (en) * | 2014-01-13 | 2014-04-23 | 广东美芝制冷设备有限公司 | Compressor and air conditioner with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185179A (en) * | 1983-04-04 | 1984-10-20 | Canon Inc | Supersonic motor |
| JPS6055866A (en) * | 1983-09-02 | 1985-04-01 | Sony Corp | Elastic wave motor |
-
1985
- 1985-01-28 JP JP60013686A patent/JPS61173683A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185179A (en) * | 1983-04-04 | 1984-10-20 | Canon Inc | Supersonic motor |
| JPS6055866A (en) * | 1983-09-02 | 1985-04-01 | Sony Corp | Elastic wave motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315272A (en) * | 1988-06-10 | 1989-12-20 | Murata Mfg Co Ltd | Piezoelectric motor |
| JPH02214476A (en) * | 1989-02-14 | 1990-08-27 | Matsushita Electric Ind Co Ltd | Ultrasonic motor |
| KR20040085425A (en) * | 2003-03-31 | 2004-10-08 | 주식회사 대우일렉트로닉스 | Refrigerator compressibility that use piezoelectric moter |
| CN103742428A (en) * | 2014-01-13 | 2014-04-23 | 广东美芝制冷设备有限公司 | Compressor and air conditioner with same |
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