JPS62225187A - Ultrasonic motor - Google Patents
Ultrasonic motorInfo
- Publication number
- JPS62225187A JPS62225187A JP61067933A JP6793386A JPS62225187A JP S62225187 A JPS62225187 A JP S62225187A JP 61067933 A JP61067933 A JP 61067933A JP 6793386 A JP6793386 A JP 6793386A JP S62225187 A JPS62225187 A JP S62225187A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- pressure
- diaphragm
- pressure contact
- force
- 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
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000255789 Bombyx mori Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000007787 solid 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
- H02N2/10—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〕
本発明は、圧電セラミックスと金、＋１４板とを組合わ
せた振動体に超音波振＠を励起することによシ、ロータ
に回転力を生じさせるようＶＣ構成した超音波モータに
関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention applies rotational force to a rotor by exciting ultrasonic vibrations in a vibrating body made of a combination of piezoelectric ceramics, gold, and a +14 plate. The present invention relates to an ultrasonic motor having a VC configuration so as to generate a voltage.
近年、８：鑞セラミックスと金属板とを組合わせた振動
体に、超音波撮動を励起することにより、ロータに回転
力を生じさせるように構成した超音波モータが注目され
ている。この超音波モータは、従来の題磁型モータに比
べて、■構造が簡単で小型化、薄型化が可能である。In recent years, attention has been paid to an ultrasonic motor configured to generate rotational force in a rotor by exciting ultrasonic imaging in a vibrating body made of a combination of 8: solid ceramics and a metal plate. This ultrasonic motor has a simple structure and can be made smaller and thinner than conventional magnetic type motors.
■低速・高トルク駆動が可能である。■Low speed/high torque drive is possible.
といった利点を有するものである。It has the following advantages.
第３図は従来の超音波モータの構成金示す図である。図
示の如く超音波モータ枠本１の底部には、円環状の撮動
吸収体２、ＦＩＥ！素子３、振動板４が一体に固定配置
されている。さらに振動板４の上には、枠体１０軸Ｊａ
ｌＣ回動自在に軸支されたロータ５が、その−側面を当
接させて載置されている。ロータ５はバネ等の弾性部材
６によって振動板４１１１１に付勢され振動板４に圧接
している。７は弾性部材６を８Ｅ縮保持しているカバー
である。FIG. 3 is a diagram showing the structure of a conventional ultrasonic motor. As shown in the figure, at the bottom of the ultrasonic motor frame 1, there is a ring-shaped imaging absorber 2, FIE! The element 3 and the diaphragm 4 are fixedly arranged integrally. Furthermore, on top of the diaphragm 4, there is a frame 10 axes Ja
A rotor 5 rotatably supported is placed with its lower side in contact with the rotor 5. The rotor 5 is urged against the diaphragm 41111 by an elastic member 6 such as a spring, and is pressed against the diaphragm 4. 7 is a cover that holds the elastic member 6 compressed by 8E.
＠３１９に示した従来の超音波モータでは、バネ等の弾
性部材６ｔ−用いてロータ５と振動板４とを圧接させる
如く構成されていたので、矢のような欠点を有していた
。The conventional ultrasonic motor shown in @319 was constructed so that the rotor 5 and the diaphragm 4 were brought into pressure contact using an elastic member 6t such as a spring, so it had the following drawbacks.
■弾性部材６を装着するための充分大きなスペースが必
要である。(2) A sufficiently large space is required for mounting the elastic member 6.
■弾性部材６の王縮童により加圧力が決まるため、ａ−
夕５１Ｃ加わる振動等の外力により圧接力が変化し易く
、ロータ５の回転布切が非円滑になりやすい。■Since the pressing force is determined by the pressure of the elastic member 6, a-
The pressure contact force tends to change due to external forces such as vibrations applied to the rotor 51C, and the rotary cloth cutting of the rotor 5 tends to become uneven.
■弾性部材６のバネ力に抗してロータ５が回転するもの
であるため、回転効率が低下するおそれがある。(2) Since the rotor 5 rotates against the spring force of the elastic member 6, there is a risk that the rotational efficiency will decrease.
■固定カバー７がネジ止めの場せには、回転方向の刀に
よって緩みを生じるおそれがある。■If the fixed cover 7 is fixed with screws, there is a risk that it may come loose due to the direction of rotation.
そこで本発明は、構造が簡単で小型化・薄型化が可能で
あり、長期に亘ってロータに安定な圧接力を付与ｃＩＴ
能で、効率よく円滑な回転が可能な超音波モータを提供
することを口重とする。Therefore, the present invention has a simple structure, can be made smaller and thinner, and can provide stable pressure contact force to the rotor over a long period of time.
Our goal is to provide an ultrasonic motor that can rotate efficiently and smoothly.
本発明は上記間魂点を解決し目的全達成するために、次
のような手段を講じた。The present invention has taken the following measures in order to solve the above-mentioned problems and achieve all the objectives.
■進行性弾性波を表面に発生させる振ｒＸＢ本を設ける
。■Installing rXB waves that generate progressive elastic waves on the surface.
■この振動体を振動吸収体を介して保持する保持体を設
ける。(2) A holder is provided to hold the vibrating body via a vibration absorber.
■前＾体に接触し前記進行性弾性波によυ回転するロー
タを設ける。■Provide a rotor that contacts the front body and rotates υ due to the traveling elastic waves.
■このロータを前記振動体に圧接させる如く上記ロータ
上に加圧部材を載置する。(2) A pressure member is placed on the rotor so as to press the rotor against the vibrating body.
■ 前記保持体に対して前記ロータの回転軸と交差する
方間に進退自在な如く押王部材金増付ける。(2) A pusher metal is added to the holding body in a direction intersecting the rotational axis of the rotor so that it can move forward and backward.
■この押圧部材による押圧万全前記ロータの回転軸方向
の力に変換して前記加圧部材に与える変換機構金膜ける
。゛
〔作用〕
このような手ａｔ−講じたことによシ、従来必要として
いたバネなどの弾性部材が必要なぐなるので、８：接方
（ｉ−得る機構部のスペースは僅かでよく、ま之圧接方
が振動等により変化することがなく安定化し、効率もよ
くなる。(2) A conversion mechanism that converts the force in the direction of the rotating shaft of the rotor and applies it to the pressure member to ensure that the pressure is fully applied by this pressure member is made of gold film. [Operation] By taking such measures, elastic members such as springs, which were required in the past, are no longer required. This pressure welding method does not change due to vibration etc., making it stable and improving efficiency.
第１図は本発明の第１実施例を示す断面図である。保持
体としての超音波モータ枠体１ノには、円環、伏の損＃
吸収体１２、王Ｒ混子１３、振動板１４が一体に固定配
置されている。この振Ｊｊｈ板１４上には、４体１１の
軸１１ｍに回動自在に軸支されたロータ１５が載１ｔさ
れている。FIG. 1 is a sectional view showing a first embodiment of the present invention. The ultrasonic motor frame 1 serving as a holding body has a circular ring and a bottom loss #.
An absorber 12, a rubber mixer 13, and a diaphragm 14 are integrally fixedly arranged. A rotor 15 rotatably supported on the shaft 11m of the four bodies 11 is mounted on the swing Jjh plate 14.
ロータ１５の上には、円環状の受は仮１６と圧接板１７
とにより複数のベアリング１８を挾持した滑動部材が配
置されており、圧接板１７に対して受けｌｌ１１６１？
よびロータ１５が回転自在になっている。圧接板１７（
Ｄ一部１７ａは枠体１１の１１１Ｉ壁に設けた孔に対し
て嵌挿され、ＥＥ接。On the rotor 15, an annular receiver is provided with a temporary 16 and a pressure contact plate 17.
A sliding member holding a plurality of bearings 18 is disposed, and the sliding member 1161?
and rotor 15 are rotatable. Pressure plate 17 (
The D portion 17a is fitted into a hole provided in the wall 111I of the frame 11, and is in EE contact.
板１７０回転を阻止している。圧接板１７の４上にはカ
バーを、檄ねた圧接部材１９が載置されている。この圧
接部材１９の周囲には傾斜面が設けてあり、この傾斜面
に対してその先端が当接するように、枠体１１の側壁に
は押圧部材としての複数のネジ２０が取り付けられてい
る。This prevents the plate from rotating 170 times. A pressure contact member 19 with a cover formed thereon is placed on the pressure contact plate 17 (4). An inclined surface is provided around the pressure contact member 19, and a plurality of screws 20 as pressing members are attached to the side wall of the frame body 11 so that the tip thereof comes into contact with this inclined surface.
このように構成した本実施例の超音波モーフは矢のよう
に作動する。Ｅｉ！素子１３に高周波電圧を印加して振
動させ、振動板１４に進行波を励起させると、ロータ１
５は進行波と逆方回の駆動力を受ける。このとき、ベア
リング１８によシ受は板１６と圧接板１７とは回動自在
であるから、ロータ１５と受は板１６は回転する。The ultrasonic morph of this embodiment configured as described above operates like an arrow. Ei! When a high frequency voltage is applied to the element 13 to cause it to vibrate and to excite a traveling wave in the diaphragm 14, the rotor 1
5 receives the driving force of the traveling wave and the opposite direction. At this time, since the bearing plate 18 allows the bearing plate 16 and the press plate 17 to rotate freely, the rotor 15 and the bearing plate 16 rotate.
ロータ１５０回転力は、ロータ１５と振動板１４との摩
擦力の大きさに依存している。そこでａ−夕１５０回転
力を調節し九い場合には、ネジ２０の締め付は盪をカロ
減しロータ１５と振励板１４とのａＥ接接方調節すれば
よい。すなわち、ネジ２０の締め付は瀘を加減すると、
圧接部材１９がロータ１５の回転軸に沿って軸方口にス
ライドし、圧接板１７．受は仮１６を介してロータ１５
への加圧力が変化する。このためロータ１５と振動ｆｉ
１４との圧接力が調節さ几る。The rotational force of the rotor 150 depends on the magnitude of the frictional force between the rotor 15 and the diaphragm 14. Therefore, if it is necessary to adjust the rotational force by 150 degrees, the tightening of the screw 20 may be reduced by a certain amount, and the contact direction between the rotor 15 and the vibration plate 14 may be adjusted. In other words, the tightening of the screw 20 is as follows:
The pressure contact member 19 slides in the axial direction along the rotation axis of the rotor 15, and the pressure contact plate 17. The receiver is connected to the rotor 15 via the provisional 16.
The pressure applied to changes. Therefore, the rotor 15 and the vibration fi
The pressure contact force with 14 is adjusted.
なお、このとき圧接板１７の一部１７ａは枠体１ノに固
定されているので、圧接＠１７および圧接部材１９がロ
ータ１５の回転に伴って一緒に回転することはない。Note that at this time, since the part 17a of the pressure contact plate 17 is fixed to the frame 1, the pressure contact @17 and the pressure contact member 19 do not rotate together with the rotation of the rotor 15.
このように本実施例ＶＣおいては、ロータ１５と蚕励板
１４とに圧接力を与える圧接部材１９の周囲に、正接方
間に対して斜めに傾斜した傾斜面を設け、この傾斜［ｆ
ｒＶｃ対して枠体１１に取付は念ネジ２０を正接方間と
は直角な方間から締め付けて押圧することにより、圧接
力の調整を行なうようにしているので、簡単な構造で圧
接力を調節できる利点がある。As described above, in this embodiment VC, an inclined surface inclined obliquely with respect to the tangential direction is provided around the pressing member 19 that applies a pressing force to the rotor 15 and the silkworm encouraging plate 14, and this inclined surface [f
When attaching the rVc to the frame 11, the pressure contact force is adjusted by tightening and pressing the screw 20 from a direction perpendicular to the tangential direction, so the pressure contact force can be adjusted with a simple structure. There are advantages that can be achieved.
第３図は本発明の第２の実施例を示す断面図である。な
お第１図と同一部分には同一符号を用い、その部分の詳
細な説明は省略する。本実施例が第１実施例と異なる点
は、第１災施例においては圧接板１７と圧接部材１９と
が別体であったが、本５ｉｆ！ｍ例では両者を一体化し
た点である。なお、圧接部材１９の外周面には、傾斜切
欠部１９ａが設けである。この傾斜切欠部１９ａは、圧
接部材１９がロータ１５の回転軸に沿った軸方向には移
ＣＩ功口丁能で、回転方間１ｃは回転しないようにする
ためのものである。この切欠部１９ ａＶＣは、枠体１
）に取付けたビン２１の先端が挿入されるものとなって
いる。このビン２１は前記ネジ２０と同様に、ロータ２
５の軸心方向と直交する方間に進退自在なように連着さ
れている。このビン２１の外測端はＢ：接リング２２の
テーパ面と当接している。圧接リング２２は枠体１ノの
上端外測に設けた雌ネジ部に対し、螺合している。FIG. 3 is a sectional view showing a second embodiment of the present invention. Note that the same reference numerals are used for the same parts as in FIG. 1, and detailed explanation of the parts will be omitted. The difference between this embodiment and the first embodiment is that in the first embodiment, the pressure contact plate 17 and the pressure contact member 19 were separate bodies, but this 5if! In example m, both are integrated. Incidentally, the outer circumferential surface of the pressing member 19 is provided with an inclined notch 19a. This inclined notch 19a is provided so that the pressure contact member 19 can be moved in the axial direction along the rotation axis of the rotor 15, but not rotated in the rotation direction 1c. This notch 19 aVC is the frame 1
) into which the tip of the bottle 21 attached is inserted. Similar to the screw 20, this bottle 21 is attached to the rotor 2.
It is connected in a direction perpendicular to the axial direction of 5 so as to be able to move forward and backward. The outer end of the bottle 21 is in contact with the tapered surface of the contact ring 22 (B). The pressure contact ring 22 is screwed into a female threaded portion provided on the outside of the upper end of the frame 1.
本実施例ＶＣ９いては、枠体１ノに対する圧接リング２
２の締め込み具合を調節することにより、ビン２ノの圧
接部材１９に対する押圧刃が変化し、七の４果ロータ１
５と振ｄ仮１４との圧接力を調節可能となる。かくして
本実施例によｎば、圧接板Ｉ７が省略されたものとなる
。In the present embodiment VC9, the press ring 2 is attached to the frame 1.
By adjusting the tightening degree of the bottle 2, the pressing blade against the pressure contact member 19 of the bottle 2 changes, and the 7-4 rotor 1
It becomes possible to adjust the pressure contact force between the holder 5 and the swing d temporary 14. Thus, according to this embodiment, the pressure contact plate I7 is omitted.
なお本発明は前記実施例に限定さ几るものではなく、本
発明の要旨全逸脱しない範囲で種々変形実施可能である
のは勿論である。例えば、本実施例では圧接力を得るた
めに振動吸収体１２を利用しているが、圧接板１７と圧
接部材１９の間に仮バネやゴム材などの偏平な弾性棒金
介在させることにより、圧接力を得るようにしてもよい
。このほか本発明の要旨を逸脱しない範囲で種々変形実
施可能であるのは勿論である。It should be noted that the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, in this embodiment, the vibration absorber 12 is used to obtain the pressure contact force, but by interposing a flat elastic rod such as a temporary spring or a rubber material between the pressure contact plate 17 and the pressure contact member 19, A pressure contact force may be obtained. It goes without saying that various other modifications can be made without departing from the gist of the present invention.
本発明によれば、従来必要としていたバネなどの弾性部
材が必要なくなるので、Ｆｆ、接方を得る機構部のスペ
ースは僅かでよく、ま九圧接方がａＪ等によシ変化する
ことがなく安定化し、効率もよくなる。かくして構造が
簡単で小型化・Ｙ４型化が可能であり、長期に亘ってロ
ータに。According to the present invention, there is no need for an elastic member such as a spring that was required in the past, so the space required for the mechanism for obtaining Ff and contact direction is small, and the contact direction does not change due to aJ, etc. More stable and more efficient. As a result, the structure is simple and can be made smaller and Y4 type, so it can be used as a rotor for a long time.
安定な圧接力を付与可能で、効率よく円滑な回転が可能
な超音彼モータを提供できる。We can provide an ultrasonic motor that can provide stable contact force and rotate efficiently and smoothly.
第１図は本発明の第１実施例を示すｙ！ｆｒｃｆｆｉ図
、第２図は本発明の第２実施例を示す断面図である。４
３図は従来例を示す断面図である。
１ノ・・・枠体、“〕２・・・振動吸収体、１３・・・
田磁素子、１４・・・振動板、１５・・・ロータ、１６
・・・受は板、１７・・・圧接板、１８…ベアリング、
１９・・・圧接部材、２０・・・ネジ、２１・・・ビン
、２２・・・圧接リング。
出願人代理人 弁理士 坪 井 淳第１−
笥２図
第３図
手続補正書FIG. 1 shows a first embodiment of the present invention! FIG. 2 is a sectional view showing a second embodiment of the present invention. 4
FIG. 3 is a sectional view showing a conventional example. 1. Frame body, 2. Vibration absorber, 13.
Magnetic element, 14... Vibration plate, 15... Rotor, 16
...The receiver is a plate, 17...Pressure plate, 18...Bearing,
19... Pressure contact member, 20... Screw, 21... Bottle, 22... Pressure contact ring. Applicant's representative Patent attorney Atsushi Tsuboi No. 1 - Figure 2 Figure 3 Procedure amendment
Claims (1)
体を振動吸収体を介して保持する保持体と、前記振動体
に接触し前記進行性弾性波により回転するロータと、こ
のロータを前記振動体に圧接させる如く上記ロータ上に
載置される加圧部材と、前記保持体に対して前記ロータ
の回転軸と交差する方向に進退自在な如く取付けた押圧
部材と、この押圧部材による押圧力を前記ロータの回転
軸方向の力に変換して前記加圧部材に与える変換機構と
を具備したことを特徴とする超音波モータ。a vibrating body that generates traveling elastic waves on its surface; a holder that holds the vibrating body via a vibration absorber; a rotor that contacts the vibrating body and rotates by the traveling elastic waves; A pressing member placed on the rotor so as to be in pressure contact with the vibrating body, a pressing member attached to the holding body so as to be able to move forward and backward in a direction intersecting the rotational axis of the rotor, and a pressing member by this pressing member. An ultrasonic motor comprising: a conversion mechanism that converts pressure into force in the direction of the rotation axis of the rotor and applies it to the pressure member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61067933A JPS62225187A (en) | 1986-03-26 | 1986-03-26 | Ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61067933A JPS62225187A (en) | 1986-03-26 | 1986-03-26 | Ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62225187A true JPS62225187A (en) | 1987-10-03 |
Family
ID=13359222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61067933A Pending JPS62225187A (en) | 1986-03-26 | 1986-03-26 | Ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62225187A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234068A (en) * | 1988-03-14 | 1989-09-19 | Nikon Corp | Ultrasonic motor |
| JPH01180893U (en) * | 1988-05-27 | 1989-12-26 | ||
| JPH0249390U (en) * | 1988-09-26 | 1990-04-05 | ||
| JPH02188167A (en) * | 1989-01-14 | 1990-07-24 | Aisin Seiki Co Ltd | Ultrasonic motor |
-
1986
- 1986-03-26 JP JP61067933A patent/JPS62225187A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01234068A (en) * | 1988-03-14 | 1989-09-19 | Nikon Corp | Ultrasonic motor |
| JPH01180893U (en) * | 1988-05-27 | 1989-12-26 | ||
| JPH0249390U (en) * | 1988-09-26 | 1990-04-05 | ||
| JPH02188167A (en) * | 1989-01-14 | 1990-07-24 | Aisin Seiki Co Ltd | Ultrasonic motor |
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