JPS60148385A - Ring-shaped supersonic vibrator of twisting and bending mode - Google Patents
Ring-shaped supersonic vibrator of twisting and bending modeInfo
- Publication number
- JPS60148385A JPS60148385A JP59001873A JP187384A JPS60148385A JP S60148385 A JPS60148385 A JP S60148385A JP 59001873 A JP59001873 A JP 59001873A JP 187384 A JP187384 A JP 187384A JP S60148385 A JPS60148385 A JP S60148385A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- shaped
- vibrator
- twisting
- doughnut
- 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
- 238000005452 bending Methods 0.000 title claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 210000001015 abdomen Anatomy 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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
- H02N2/001—Driving devices, e.g. vibrators
- H02N2/0045—Driving devices, e.g. vibrators using longitudinal or radial modes combined with torsion or shear modes
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野・発明の目的〕
本発明は超音波振動子の改良に係り、リング状振動子の
表面が効率よく楕円連動をする新モードの超音波振動子
を提供することを目的とする。[Detailed Description of the Invention] [Technical Field/Object of the Invention] The present invention relates to improvement of an ultrasonic transducer, and provides a new mode ultrasonic transducer in which the surface of a ring-shaped transducer efficiently interlocks in an elliptical manner. The purpose is to
従来のｄＷ音波振動子には圧電型と磁歪域とがあり、ど
ちらも良く用いられているが、圧（型の力が効率が高く
、構造が簡単な点で実用上はれている。圧電型超音波振
動子と言えば専らボルト締めランジュバン型と言われる
程で、他の型で商品化されているものは見当らない。と
ころで、このランジュバン型振動子は、圧電セラミック
振動子をアルミニウム又はステンレス等の円柱状ｍ Ｐ
１子でサンドイッチしボルトで強く締め刊けた横進をし
ている。電気信号によって発生した圧電振′動子の高周
波（厚み）ｆｔＭ動で円柱状振動子の縦モード振動な共
振させ、４ｉ［を増幅させるので、円柱状振動子の多さ
に応じて共振用波数が決まり、低固波で短い振動子の作
れないこと、さらに縦モードの振動だけしか励振できな
いことなどのような欠点があった。Conventional dW sound wave transducers include piezoelectric type and magnetostrictive type, both of which are commonly used. Speaking of ultrasonic transducers, it is said that the bolt-tight Langevin type is the only type of ultrasonic transducer, and no other type of ultrasonic transducer has been commercialized.By the way, this Langevin type transducer uses a piezoelectric ceramic transducer made of aluminum or stainless steel. cylindrical m P
I'm sandwiching my first child and moving sideways with the bolts firmly tightened. The high frequency (thickness) ftM movement of the piezoelectric vibrator generated by the electric signal causes the cylindrical vibrator to resonate in the longitudinal mode and amplify 4i[, so the resonance wave number changes depending on the number of cylindrical vibrators. However, this technique had drawbacks such as the inability to create short oscillators with low solid waves, and the ability to excite only longitudinal mode vibrations.
この発明は上述した従来技術の欠点な解消するもので、
リング状振動子に厚さ方向の屈曲堀れりをさせる手段と
、リング状振動子の円周に沿って前記屈曲振動とほぼ同
時に捻り振動させろ手段とを備えたことを特徴とする超
音波振動子によって目的を達成したものである。This invention solves the above-mentioned drawbacks of the prior art.
Ultrasonic vibration characterized by comprising means for causing a ring-shaped vibrator to bend in the thickness direction, and means for causing torsional vibration along the circumference of the ring-shaped vibrator almost simultaneously with the bending vibration. The purpose was achieved through the child.
屈曲振動と捻り振動とが同時に発生する結男、す／グ捩
勅子の振動の＃部は振幅のケじる面内く主軸を有する楕
円連動を行なう。振動の腹が楕円運動をする超音波振動
子は圧電モータなどの分野で渇望されている型の振励子
である。以下本発明の実施例を図面に従って説明する。The # part of the vibration of the connecting screw, where bending vibration and torsional vibration occur simultaneously, performs elliptical interlocking with the principal axis in the plane where the amplitude changes. An ultrasonic vibrator whose vibration antinode makes an elliptical motion is a type of vibrator that is highly desired in fields such as piezoelectric motors. Embodiments of the present invention will be described below with reference to the drawings.
実施例１゜
第５図は本発明の捻り・屈曲モードのリング状超音波振
動子の一実施例を示す正面図であり、第１図、第２図に
示したリング状振動子を第３．第４図に示した捻り結合
子で励振するものである。Embodiment 1 FIG. 5 is a front view showing an embodiment of the ring-shaped ultrasonic transducer in torsion/bending mode of the present invention, and the ring-shaped transducer shown in FIGS. ．． It is excited by the torsion coupler shown in FIG.
すなわち第１図および第２図に示す如く、外径３５ｍａ
ｎｅ内径２１ ｍｍ ｍ厚さ３．５ｒｒａｎのアルミニ
ウムのリング１の一力の面に３等分する形で、高さ６間
。That is, as shown in Fig. 1 and Fig. 2, the outer diameter is 35 mm.
An aluminum ring 1 with an inner diameter of 21 mm and a thickness of 3.5 rran is divided into three equal parts on one side, and the height is 6 mm.
厚さ２闘の支持脚３ｓ ａ ３＠および３．が付いてお
り、３本の脚３は外径１５ ｒｔａｎ ｅ高さ６ｍｍで
中心に８１１１１１１のネジ穴２１を有する支持円筒２
とつながってリング状振動子を形成している。Thickness 2 support legs 3s a 3@ and 3. The three legs 3 are a support cylinder 2 with an outer diameter of 15 rtan e, a height of 6 mm, and a screw hole 21 of 8111111 in the center.
are connected to form a ring-shaped vibrator.
これを振動する捻り結合子は第３図および第４図に示す
ように、外径３５ ｍ 、内径１５ ｍｉ 、厚さ３園
のドーナツ状円板４の片面に厚さ２閣、高さ７．７．の
歯状板５１．５□、５．が円板を３等分する形で放射状
に付いている。この歯状板５は円板４面上の法線に対し
、数度傾いて付いているか、もしくは円板４の中心を軸
として捻り変形を与えた形状に作られて、捻り結合子が
構成されている。As shown in FIGS. 3 and 4, the torsion coupler that vibrates this is made of a donut-shaped disk 4 with an outer diameter of 35 m, an inner diameter of 15 m, and a thickness of 3 mm. .7. toothed plate 51.5□, 5. are attached radially, dividing the disk into three equal parts. This toothed plate 5 is attached at an angle of several degrees with respect to the normal line on the surface of the disk 4, or is made in a shape torsionally deformed around the center of the disk 4, forming a torsion connector. has been done.
リング状振動子の支持脚３ｔ 、 ３ｔ 、３ｓと捻り
結合子の歯状板５１ ａ ５１ ａ ５．とが６０°ず
つずれ、互に円を６等分するような配置で組み合わせる
。これに外径３５胴、内径１５間、厚さ２市のドーナツ
状圧電振動子６．７の正分極面又は負分極面同志を対向
させ、間に端子板８１を挾んで車ね、さらに外径３５
ｒａｎ ＃内径８１１１１１１ ｅ厚さ１０ｓｎの座金
９に外径８１１１１１１ ｍ長さ２５ｍｍのキャップボ
ルト１０を通し、キャップボルト１０をリング状振動子
のネジ穴２１に螺挿して締め付けた。Support legs 3t, 3t, 3s of the ring-shaped vibrator and the toothed plate 51a of the torsion coupler 5. and are offset by 60 degrees, and are combined in such a way that they divide the circle into six equal parts. A donut-shaped piezoelectric vibrator 6.7 with an outer diameter of 35 mm, an inner diameter of 15 mm, and a thickness of 2 mm is placed with its positive or negative polarized surfaces facing each other, and the terminal plate 81 is sandwiched between them. Diameter 35
ran #A cap bolt 10 with an outer diameter of 8111111 m and a length of 25 mm was passed through a washer 9 with an inner diameter of 8111111 e and a thickness of 10 sn, and the cap bolt 10 was screwed into the screw hole 21 of the ring-shaped vibrator and tightened.
このようにして組み立てられた捻り・屈曲モードの超音
波振動子の端子板８．．８．に接続されているリード＠
１１および１２に３８．８ＫＨ７，１０ボルトの正弦波
電圧を印加したところ、リングｌは支持脚３１ ａ ３
ｔ Ｉ ３．を節とし、歯状板５１＊５１゜５□との接
合部な腹とする屈曲振動が生ずると同時にリング全体が
、リングの中心な軸とする捻り振動を受けた。その結果
リングの振動の腹部すなわち歯状板との接合部は、振動
の振幅の面に主軸を有する楕円状の運動をする。このこ
とは回転軸を有する円板をリング面と接触させると、円
板が面内でスムーズ罠回転することを示している。Terminal plate of the torsion/bending mode ultrasonic transducer assembled in this way 8. ．． 8. Leads connected to @
When a sinusoidal voltage of 38.8 KH7, 10 volts was applied to 11 and 12, ring l was connected to support leg 31 a 3
t I 3. At the same time, the entire ring was subjected to torsional vibration about the central axis of the ring. As a result, the vibration abdomen of the ring, that is, the joint with the tooth plate, moves in an elliptical manner with its principal axis in the plane of the vibration amplitude. This shows that when a disk with a rotation axis is brought into contact with the ring surface, the disk rotates smoothly within the plane.
以上説明したように、リング状振動子を厚さ方向に屈曲
振動する手段と、リング状振動子の円周に沿って前記屈
曲振動と同時に捻り振動する手段とを備えた構成にした
から、リング状振動子の屈曲振動による振動の腹の直線
状往復運動がリングの捻り振動のために楕円運動に変わ
ったものであり、従来のランジュバン型超音波振動子な
どには見られないモードの超音波振切子が出現した。こ
のため圧電モータなどへの応用を考えたとき小型、強力
で使いよい超音波振動子として、と、くに楕円運動への
変換の効率の高い効果がある。As explained above, since the ring-shaped vibrator is configured to include means for bending vibration in the thickness direction and means for causing torsional vibration along the circumference of the ring-shaped vibrator at the same time as the bending vibration, the ring-shaped vibrator The linear reciprocating motion of the vibration antinode due to the bending vibration of the shaped vibrator is changed to elliptical motion due to the torsional vibration of the ring, and this mode of ultrasonic wave is not seen in conventional Langevin type ultrasonic vibrators. A pendant appeared. Therefore, when considering application to piezoelectric motors, etc., it is effective as a small, powerful, and easy-to-use ultrasonic transducer, and in particular, it has a high efficiency in converting elliptical motion.
なお本発明の実施例ではリング状振動子の支持脚を３本
、歯状板３枚の場合を例示したが、これは実施例のリン
グ状振動子が３’８．８ＫＨ２で励振されたとき、リン
グの円１．■を３等分する波数３の屈曲モードの定在波
が立つからである。リングの直径、厚みなどを変えるこ
とにより波数も変わるので支持脚、歯状板の枚数と取付
位置もこれに合わせて変更することは言うまでもない。In the embodiment of the present invention, the ring-shaped vibrator has three supporting legs and three toothed plates, but this is the case when the ring-shaped vibrator of the embodiment is excited at 3'8.8 KH2. , ring circle 1. This is because there is a standing wave in the bending mode with a wave number of 3, which divides (2) into three equal parts. Since the wave number changes by changing the diameter and thickness of the ring, it goes without saying that the number and mounting position of the support legs and toothed plates must be changed accordingly.
図はすべて本発明の実施例に係る超音波振動子を説明す
るためのもので、第１図および第２図はその超音波振動
子に用いるリング状振動子の底面図および正面図、第３
図および第４図はその超音波振動子に用いる捻り結合子
の平面図および正面図、第５図はその超音波振動子の正
面図である。
１・・°・・・リング、３ｔ ａ ３ｘ ａ ３Ｂ・・
・・・・支持脚、４・・・・・・円板、５ｉ 、５＊
ｅ ５ｇ・・・・・・歯状板、６．７・・・・・・圧電
振動子。
第１図
第２図
第３図
１
第４図
第５１７１
ノThe figures are all for explaining the ultrasonic transducer according to the embodiment of the present invention, and FIGS. 1 and 2 are a bottom view and a front view of a ring-shaped transducer used in the ultrasonic transducer, and FIG.
4 are a plan view and a front view of a torsion coupler used in the ultrasonic transducer, and FIG. 5 is a front view of the ultrasonic transducer. 1...°...Ring, 3t a 3x a 3B...
...Support leg, 4...Disk, 5i, 5*
e 5g...Tooth plate, 6.7...Piezoelectric vibrator. Figure 1 Figure 2 Figure 3 Figure 1 Figure 4 Figure 5171
Claims (1)
グ状振動子の円周に沿って前記屈曲振動と同時に捻り振
動をさせる手段とを備えたことを特徴とする超音波振動
子。1. An ultrasonic transducer characterized by comprising means for causing a ring-shaped vibrator to undergo bending vibration in the thickness direction, and means for causing torsional vibration along the circumference of the ring-shaped vibrator at the same time as the bending vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59001873A JPS60148385A (en) | 1984-01-11 | 1984-01-11 | Ring-shaped supersonic vibrator of twisting and bending mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59001873A JPS60148385A (en) | 1984-01-11 | 1984-01-11 | Ring-shaped supersonic vibrator of twisting and bending mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60148385A true JPS60148385A (en) | 1985-08-05 |
Family
ID=11513670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59001873A Pending JPS60148385A (en) | 1984-01-11 | 1984-01-11 | Ring-shaped supersonic vibrator of twisting and bending mode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60148385A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697117A (en) * | 1985-11-27 | 1987-09-29 | Taga Electric Co., Ltd. | Rotary ultrasonic motor |
| JPH01117672A (en) * | 1987-10-30 | 1989-05-10 | Nec Corp | Driving method for ultrasonic motor |
| JPH01145168A (en) * | 1987-11-30 | 1989-06-07 | Nec Corp | Paper feed mechanism |
| JPH0255584A (en) * | 1988-08-15 | 1990-02-23 | Olympus Optical Co Ltd | Ultrasonic vibrator and ultrasonic motor |
-
1984
- 1984-01-11 JP JP59001873A patent/JPS60148385A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697117A (en) * | 1985-11-27 | 1987-09-29 | Taga Electric Co., Ltd. | Rotary ultrasonic motor |
| JPH01117672A (en) * | 1987-10-30 | 1989-05-10 | Nec Corp | Driving method for ultrasonic motor |
| JPH01145168A (en) * | 1987-11-30 | 1989-06-07 | Nec Corp | Paper feed mechanism |
| JPH0588676B2 (en) * | 1987-11-30 | 1993-12-24 | Nippon Electric Co | |
| JPH0255584A (en) * | 1988-08-15 | 1990-02-23 | Olympus Optical Co Ltd | Ultrasonic vibrator and ultrasonic motor |
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