JPS59178988A - Stator of surface wave motor - Google Patents
Stator of surface wave motorInfo
- Publication number
- JPS59178988A JPS59178988A JP58053362A JP5336283A JPS59178988A JP S59178988 A JPS59178988 A JP S59178988A JP 58053362 A JP58053362 A JP 58053362A JP 5336283 A JP5336283 A JP 5336283A JP S59178988 A JPS59178988 A JP S59178988A
- Authority
- JP
- Japan
- Prior art keywords
- elastic body
- rod
- surface wave
- shaped elastic
- stator
- 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.)
- Granted
Links
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000002184 metal Substances 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
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
- H02N2/0065—Friction interface
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】 である。[Detailed description of the invention] It is.
従来から広く用いられている各種モータ装置は、その駆
動源として電磁力を応用したものが大部分であり、各種
用途に使われている。しか（〜これら装置の大きさ、重
量及び回転力等は用いられる材料によって一定の制限を
受けるものである。Most of the various motor devices that have been widely used in the past utilize electromagnetic force as their driving source, and are used for various purposes. However, the size, weight, rotational force, etc. of these devices are subject to certain limitations depending on the materials used.
何故ならば、これらの因子は用いられる材料の磁気的特
性等によって決められるものであり、これらの特性を超
えた装置は回転駆動を行うことが不可能となるためであ
る。This is because these factors are determined by the magnetic properties of the materials used, and devices exceeding these properties cannot be rotated.
一方、これらの各種モータ装置に代替する装置として、
本出願人によって超音波撮動を利用したモータ装置即ち
、超音波振動子の表面において励振される表面波を、相
互に加圧接触する位置に配置した動体の一方向運動に変
換する如き装置が開示されている。On the other hand, as an alternative to these various motor devices,
The present applicant has proposed a motor device using ultrasonic imaging, that is, a device that converts surface waves excited on the surface of an ultrasonic transducer into unidirectional motion of moving objects placed in pressure contact with each other. Disclosed.
これら発明によって超音波の持つ強力な振動エネルギー
を回転又Ｆｉ［逆運動に変換することによって小形にし
て軽量なモータ装置を実現したものであるが、本発明は
これらの装置のうち、特に固定子に相当する棒状弾性体
の横断面形状を設定することにより種々の使用目的にか
なったモータ装置の提供を目的とするものである。These inventions have realized a compact and lightweight motor device by converting the powerful vibrational energy of ultrasonic waves into rotational or Fi [inverse motion]. The object of the present invention is to provide a motor device that can be used for various purposes by setting the cross-sectional shape of the rod-like elastic body corresponding to the above.
以下、図面を参照して本発明に係るモータ装置の動作原
理と実施例に関Ｌ７詳細な説明を行う。Hereinafter, the operating principle and embodiments of the motor device according to the present invention will be described in detail with reference to the drawings.
〈１）動作原理について
第１図は動作原理を説明するだめの一部拡大斜視図であ
る。２は金属等弾性体であり、その表面２人上に横撮動
と縦振動が合成された表面波が形成された状態を拡大し
て示している。ここで、表面波とは棒状（板状）弾性体
の１１１（曲振動による表面波であり、弾性体の表面に
は縦波と横波とが９０°位相のずれた橢円振動が形成さ
れ、棒状（板状）弾性体に沿って伝搬する。第１図は屈
曲振動による表面波の伝搬状態（振動源は図示せず）の
みを示しているう即ち、質点Ｃに着目すると、横振巾ａ
（上下方向）と縦振巾ｂ（左右方向）との合成された橢
円Ｑ上を矢印Ｍの方向に運動しており、その表面波は音
速Ｕのスピードで移動している。(1) Principle of operation FIG. 1 is a partially enlarged perspective view for explaining the principle of operation. 2 is an elastic body such as a metal, and the state in which a surface wave, which is a combination of horizontal imaging and longitudinal vibration, is formed on the surface of two people is shown in an enlarged manner. Here, the surface wave is a surface wave caused by 111 (curved vibration) of a rod-shaped (plate-shaped) elastic body, and a circular vibration in which longitudinal waves and transverse waves are out of phase by 90 degrees is formed on the surface of the elastic body. It propagates along a rod-shaped (plate-shaped) elastic body.Figure 1 shows only the propagation state of surface waves due to bending vibration (the vibration source is not shown). a
It is moving in the direction of arrow M on an infrared circle Q that is a combination of vertical vibration width b (vertical direction) and longitudinal vibration width b (horizontal direction), and its surface wave is moving at the speed of sound U.
この運動は弾性体表面上２人のどの点であっても同様で
あって、この状態下でフリーな動体５の表面を弾性体２
の表面上に加圧接触させると、動体５は弾性体２の表面
波の頂点Ａ及びＡ′の部分でのみ接触しており、かつこ
れらの頂点Ａ、Ｎは振動速度ｖ ＝ ２π４ｂ（ただし
干ハ振動数）で矢印Ｍの方向に運動１．ているのである
から、フリーな動体５は弾性体２との摩擦力によって矢
印Ｎの方向に駆動されることになる。This movement is the same no matter where the two people are on the surface of the elastic body, and under this condition, the surface of the free moving body 5 is moved between the elastic body 5
When the moving body 5 is brought into pressure contact with the surface of the elastic body 2, it is in contact only at the peaks A and A' of the surface waves of the elastic body 2, and these peaks A and N have a vibration velocity v = 2π4b (however, the vibration velocity 1. Motion in the direction of arrow M at C frequency). Therefore, the free moving body 5 is driven in the direction of the arrow N by the frictional force with the elastic body 2.
そこで、動体速度を上げるには振動速度ｖ−２π±ｂを
上げればよいことがわかる。つ甘り横振巾ａに比べ縦振
巾すを犬きくすればよい。Therefore, it can be seen that in order to increase the speed of the moving body, it is sufficient to increase the vibration speed v-2π±b. Just make the vertical swing width wider than the horizontal swing width a.
棒状弾性体の屈曲振動による表面波の横振巾ａおよび縦
振巾すの割合は
であり、波長入は
である。The ratio of the transverse amplitude a and the longitudinal amplitude of the surface wave due to the bending vibration of the rod-shaped elastic body is , and the wavelength input is .
（１）、 ＋２）式より−を大きくするには子、Ｅ、り
を既定値とするとり、を大きくするか、Ｒ，を小さくす
れば良いことがわかる！
既に開示された表面波モータの固定子の断面形状は口型
または○型であり、その断面２次半径はそれぞれ０．５
７８ｈ１ および０，５ｈｔであるが、本発明はこれ
らの断面２次半径よりさらに小さくする事にある。From formulas (1) and +2), we can see that in order to increase -, we can either set E, to the default value, or make R smaller! The cross-sectional shape of the stator of the already disclosed surface wave motor is mouth-shaped or o-shaped, and the secondary radius of each cross-section is 0.5.
78h1 and 0.5ht, but the purpose of the present invention is to make them even smaller than these secondary radii of the cross section.
本発明はこの原理に従がって動体速度を上げることを基
本としたモータ装置に関するものであって、その実施例
を以下に説明する。The present invention relates to a motor device based on increasing the speed of a moving object according to this principle, and embodiments thereof will be described below.
〈２）凸形断１ｆｉｅ有する棒状弾性体について第２図
は棒状弾性体の断面図を示し、弾性体２の底面に圧電体
１が接着されており、圧電体■により破線Ｂを中立軸と
して屈曲振動が励伽され、弾性体の表面２’Ａに縦波と
横波を伴なった表面波が形成される。<2) Regarding the rod-shaped elastic body with a convex cross section 1 fie Figure 2 shows a cross-sectional view of the rod-shaped elastic body, in which a piezoelectric body 1 is adhered to the bottom surface of the elastic body 2, and the piezoelectric body Bending vibration is excited, and a surface wave accompanied by a longitudinal wave and a transverse wave is formed on the surface 2'A of the elastic body.
この図のように凸形の断面形状とすることによりす、が
大きくＲが小さく々るため−の比を大きくすることが出
来る。By making the cross-sectional shape convex as shown in this figure, R is large and R is small, so that the - ratio can be increased.
〈３〉吐−形断面を有する棒状弾性体について第３図は
棒状弾性体の断面図を示し、棒状弾性体２を外部の振動
子により破線Ｂを中立軸と１７て屈曲振動を励振させる
と弾性体表面２Ａに縦波と横波を伴なった表面波が形成
される、〈４）複合材質の弾性体について
第４図は棒状弾性体の断面図を示し、棒状弾性体２に他
の材質特にヤング率Ｅの小さい材質の弾性体３を一体で
形成することにより一の比を大きくすることが出来る。<3> About the rod-shaped elastic body with a discharge-shaped cross section FIG. 3 shows a cross-sectional view of the rod-shaped elastic body. A surface wave accompanied by a longitudinal wave and a transverse wave is formed on the surface 2A of the elastic body.<4) Regarding the elastic body made of composite material Figure 4 shows a cross-sectional view of a rod-shaped elastic body. In particular, by integrally forming the elastic body 3 made of a material with a small Young's modulus E, the ratio of 1 can be increased.
〈５〉 多数の板状部材を有する弾性体について第５図
は棒状弾性体２に多数の板状部材４を嵌込み固定させた
場合で、第５図（ＢｌはそのＩｎ’ｒ面である。棒状弾
性体２の屈曲振動により板状部材４の両側面４Ａは縦波
と横波を伴なった表面波が形成される。<5> Regarding the elastic body having a large number of plate-like members, FIG. Due to the bending vibration of the rod-shaped elastic body 2, surface waves including longitudinal waves and transverse waves are formed on both side surfaces 4A of the plate-shaped member 4.
＜６）多数の切込みを有する弾性体について第６図は棒
状弾性体２に多数の切込みを形成させた場合で、第６図
（Ｂ）はその断面である。もちろん、第５図と同様、棒
状弾性体２の両側面２Ａには縦波と横波を伴なった表面
波が形成される。<6) About the elastic body having many cuts FIG. 6 shows a case where a large number of cuts are formed in the rod-shaped elastic body 2, and FIG. 6(B) is a cross section thereof. Of course, as in FIG. 5, surface waves accompanied by longitudinal waves and transverse waves are formed on both side surfaces 2A of the rod-shaped elastic body 2.
〈７″＞ 弾性体の横断面形状について以上本発明に係
る表面波モ〜りの固定子に関１、で、その、駆動原理及
びその実施例の説明を行ったが、棒状弾性体の横断面形
状が例えは第７図に示した◇等は単にその一実施例にす
ぎないことは営う捷でもない。<7″> Regarding the cross-sectional shape of the elastic body In Section 1 regarding the surface wave type stator according to the present invention, the driving principle and its embodiments have been explained. It is not a matter of course that the surface shape shown in FIG. 7 is merely an example.
また、本発明における固定子である棒状弾性体を回転子
線たけ移動子側と［７ても良いことは言うまでもない。Furthermore, it goes without saying that the rod-shaped elastic body serving as the stator in the present invention may be connected to the rotor beam slider side.
〈８〉本発明の効果について
本発明は以上説明したように棒状弾性体の横断面形状を
断面２次半径が中立軸から表面１での距離に比べ小さく
するように構成することにより、使用目的にかなった回
転子または移動子の速度を得る効果がある。<8> Effects of the present invention As explained above, the present invention has a cross-sectional shape of a rod-like elastic body so that the secondary radius of the cross-section is smaller than the distance from the neutral axis to the surface 1, thereby achieving the intended use. This has the effect of obtaining a suitable rotor or slider speed.
第１図は本発明の動作原理を説明するための一部拡大斜
視図、第２〜４図は棒状弾性体の断面図、第５図は板状
部材を嵌込み固定きせた棒状弾性体の説明図、第６図は
多数の切込みを有する棒状弾性体の説明図及び第７図は
他の棒状弾性体の断面図であるっ
１・・・圧電体、２・・・弾性体、２Ａ・・・表面、３
・・・弾性体、４・・・板状部材、４Ａ・・・両側面、
５・・・動体、Ａ、 Ａ′及びＣ・・・質点、Ｂ・・・
破線、Ｍ、Ｎ・・・矢印、Ｑ・・・橢円、Ｕ・・・音速
、ａ・・・横撮巾、ｂ・・・縦振巾、１１１・・・中立
軸から表面までの距離
特許出願人 株式会社 新生工業；
＞３−７
図Figure 1 is a partially enlarged perspective view for explaining the operating principle of the present invention, Figures 2 to 4 are cross-sectional views of a rod-shaped elastic body, and Figure 5 is a rod-shaped elastic body in which a plate member is fitted and fixed. An explanatory diagram, FIG. 6 is an explanatory diagram of a rod-shaped elastic body having a large number of cuts, and FIG. 7 is a cross-sectional view of another rod-shaped elastic body. ...Surface, 3
...Elastic body, 4...Plate member, 4A...Both sides,
5... Moving body, A, A' and C... Mass point, B...
Broken line, M, N...Arrow, Q...Hydraulic circle, U...Sound speed, a...Horizontal width, b...Vertical width, 111...Distance from neutral axis to surface Patent applicant Shinsei Kogyo Co., Ltd.; ＞3-7 Figure
Claims (5)
距離に比べ、 小さいことを特徴とする表面波モータの固定子。(1) A stator for a surface wave motor, characterized in that, in a rod-shaped elastic body excited by a vibrator, the secondary radius of the cross-section of the rod-shaped elastic body is smaller than the distance from the neutral axis to the surface.
ことを特徴とする特許請求の範囲第１項記載の表面波モ
ータの固定子。(2) A stator for a surface wave motor according to claim 1, wherein the rod-shaped elastic body has a non-circular cross-sectional shape.
弾性体と一体で形成されていることを特徴とする特許請
求の範囲第１項記載の表面波モータの固定子。(3) A stator for a surface wave motor according to claim 1, wherein a part of the cross-sectional shape of the rod-shaped elastic body is formed integrally with a different type of elastic body.
を固定配備したことを特徴とする特許請求の範囲第１項
記載の表面波モータの固定子。(4) A stator for a surface wave motor according to claim 1, characterized in that a large number of rod-like or plate-like members are fixedly arranged on the rod-like elastic body.
とを特徴とする特許請求の範囲第１項記載の表面波モー
タの固定子。(5) A stator for a surface wave motor according to claim 1, characterized in that the rod-shaped elastic body has a large number of notches formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053362A JPS59178988A (en) | 1983-03-29 | 1983-03-29 | Stator of surface wave motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58053362A JPS59178988A (en) | 1983-03-29 | 1983-03-29 | Stator of surface wave motor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007368A Division JPH0315278A (en) | 1990-01-16 | 1990-01-16 | Elastic vibrator in traveling bending vibration motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59178988A true JPS59178988A (en) | 1984-10-11 |
| JPH0542230B2 JPH0542230B2 (en) | 1993-06-25 |
Family
ID=12940692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58053362A Granted JPS59178988A (en) | 1983-03-29 | 1983-03-29 | Stator of surface wave motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59178988A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59201685A (en) * | 1983-04-30 | 1984-11-15 | Canon Inc | Vibration wave motor |
| JPS61116978A (en) * | 1984-11-08 | 1986-06-04 | Matsushita Electric Ind Co Ltd | Supersonic wave drive motor |
| EP0198183A2 (en) * | 1985-04-19 | 1986-10-22 | Hitachi Maxell Ltd. | Ultrasonic motor |
| DE3626389A1 (en) * | 1985-08-05 | 1987-02-19 | Canon Kk | HIKING SHAFT MOTOR |
| WO1987005166A1 (en) * | 1986-02-18 | 1987-08-27 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic motor |
| US4697117A (en) * | 1985-11-27 | 1987-09-29 | Taga Electric Co., Ltd. | Rotary ultrasonic motor |
| JPS6311073A (en) * | 1986-06-30 | 1988-01-18 | Canon Inc | Vibrating wave motor |
| US4980599A (en) * | 1989-02-15 | 1990-12-25 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| US5055732A (en) * | 1988-04-05 | 1991-10-08 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| US5066884A (en) * | 1989-02-10 | 1991-11-19 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
| US5172023A (en) * | 1990-11-09 | 1992-12-15 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Ultrasonic motor |
| US5204577A (en) * | 1989-05-15 | 1993-04-20 | Nikon Corporation | Ultrasonic motor improved in driving efficiency |
| US5347192A (en) * | 1985-08-05 | 1994-09-13 | Canon Kabushiki Kaisha | Vibration wave motor |
| EP0665636A1 (en) * | 1989-06-05 | 1995-08-02 | Canon Kabushiki Kaisha | Vibration driven motor |
| JPH081366U (en) * | 1996-03-25 | 1996-09-03 | セイコー電子工業株式会社 | Ultrasonic motor |
| US5554906A (en) * | 1992-10-19 | 1996-09-10 | Nikon Corporation | Ultrasonic motor |
-
1983
- 1983-03-29 JP JP58053362A patent/JPS59178988A/en active Granted
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0140597B2 (en) * | 1983-04-30 | 1989-08-30 | Canon Kk | |
| JPS59201685A (en) * | 1983-04-30 | 1984-11-15 | Canon Inc | Vibration wave motor |
| JPS61116978A (en) * | 1984-11-08 | 1986-06-04 | Matsushita Electric Ind Co Ltd | Supersonic wave drive motor |
| EP0198183A2 (en) * | 1985-04-19 | 1986-10-22 | Hitachi Maxell Ltd. | Ultrasonic motor |
| DE3626389A1 (en) * | 1985-08-05 | 1987-02-19 | Canon Kk | HIKING SHAFT MOTOR |
| US5952766A (en) * | 1985-08-05 | 1999-09-14 | Canon Kabushiki Kaisha | Vibration wave motor |
| US5892317A (en) * | 1985-08-05 | 1999-04-06 | Canon Kabushiki Kaisha | Vibration wave motor |
| US5347192A (en) * | 1985-08-05 | 1994-09-13 | Canon Kabushiki Kaisha | Vibration wave motor |
| US4697117A (en) * | 1985-11-27 | 1987-09-29 | Taga Electric Co., Ltd. | Rotary ultrasonic motor |
| US4829209A (en) * | 1986-02-18 | 1989-05-09 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic motor with stator projections and at least two concentric rings of electrodes |
| WO1987005166A1 (en) * | 1986-02-18 | 1987-08-27 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic motor |
| JPS6311073A (en) * | 1986-06-30 | 1988-01-18 | Canon Inc | Vibrating wave motor |
| JPH0516274B2 (en) * | 1986-06-30 | 1993-03-03 | Canon Kk | |
| US5055732A (en) * | 1988-04-05 | 1991-10-08 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| US5066884A (en) * | 1989-02-10 | 1991-11-19 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
| US5990597A (en) * | 1989-02-10 | 1999-11-23 | Nikon Corporation | Ultrasonic motor having high drive efficiency |
| US4980599A (en) * | 1989-02-15 | 1990-12-25 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| US5204577A (en) * | 1989-05-15 | 1993-04-20 | Nikon Corporation | Ultrasonic motor improved in driving efficiency |
| EP0665636A1 (en) * | 1989-06-05 | 1995-08-02 | Canon Kabushiki Kaisha | Vibration driven motor |
| US5548175A (en) * | 1989-06-05 | 1996-08-20 | Canon Kabushiki Kaisha | Vibration driven motor |
| US5172023A (en) * | 1990-11-09 | 1992-12-15 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Ultrasonic motor |
| US5554906A (en) * | 1992-10-19 | 1996-09-10 | Nikon Corporation | Ultrasonic motor |
| JPH081366U (en) * | 1996-03-25 | 1996-09-03 | セイコー電子工業株式会社 | Ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0542230B2 (en) | 1993-06-25 |
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