JPH074072B2 - Ultrasonic motor - Google Patents
Ultrasonic motorInfo
- Publication number
- JPH074072B2 JPH074072B2 JP62250531A JP25053187A JPH074072B2 JP H074072 B2 JPH074072 B2 JP H074072B2 JP 62250531 A JP62250531 A JP 62250531A JP 25053187 A JP25053187 A JP 25053187A JP H074072 B2 JPH074072 B2 JP H074072B2
- Authority
- JP
- Japan
- Prior art keywords
- longitudinal
- primary
- vibration
- ultrasonic motor
- node
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は超音波モータに関する。The present invention relates to an ultrasonic motor.
（従来の技術） 従来、紙送り用超音波モータの振動子は、該モータの振
動モードに影響を与えないよう、第５図（ｂ）に示すよ
うに土台54上のスポンジ等の柔らかい部材53の上に置か
れていた。(Prior Art) Conventionally, the vibrator of the ultrasonic motor for paper feeding does not affect the vibration mode of the motor, as shown in FIG. 5B, a soft member 53 such as a sponge on the base 54. Was placed on top of.
（発明が解決しようとする問題点） しかしながら、前記従来の紙送り用超音波モータの振動
子の支持方法では、該モータあるいは該モータが組み込
まれた装置の移動あるいは設置の際の衝撃等により、振
動子の振動板51が当初調整された位置から点線で示した
位置に移動し（第５図（ａ）、その結果、紙56を圧接す
る左接部材55の位置Ｃが変動して該モータの本来の性能
を劣化させてしまうことが起こったり、あるいは全く該
モータの機能を持たない状態になったりすることがあ
る。(Problems to be Solved by the Invention) However, in the conventional method for supporting the vibrator of the ultrasonic motor for paper feeding, due to a shock or the like during movement or installation of the motor or a device incorporating the motor, The vibrating plate 51 of the vibrator moves from the initially adjusted position to the position shown by the dotted line (FIG. 5 (a)). As a result, the position C of the left contact member 55 that presses the paper 56 fluctuates and the motor The original performance of the motor may be deteriorated, or the motor may have no function at all.
（問題点を解決するための手段） 本発明は、長方体の振動板の一つの面に圧電セラミック
を接着して構成される１次の長手縦振動と１次の幅屈曲
振動モードで動作する縦屈曲多重モードの振動子を駆動
源とした超音波モータに於て、圧電セラミックが接着さ
れた振動板の一次の長手縦振動の節と一次の幅屈曲振動
の節の二つの交点部を固定支持し、更に移動体圧接位置
から振動板の幅方向に伸ばした線と一次の幅屈曲振動の
節の交点を可動支持することを特徴とする。(Means for Solving Problems) The present invention operates in a primary longitudinal longitudinal vibration mode and a primary width bending vibration mode configured by bonding a piezoelectric ceramic to one surface of a rectangular diaphragm. In an ultrasonic motor that uses a longitudinal bending multimode oscillator as a drive source, the two intersections of the primary longitudinal longitudinal vibration node and the primary width bending vibration node of the vibration plate to which the piezoelectric ceramic is bonded are It is characterized in that it is fixedly supported, and further, the intersection of the line extending in the width direction of the diaphragm from the moving body pressure contact position and the node of the primary width bending vibration is movably supported.
（作用） 本発明は、第１図（ａ），（ｂ）に示すように、長方体
の振動板11の一つの面に圧電セラミック板12を接着して
構成される１次の長手縦振動と１次の幅屈曲振動モード
で動作する縦屈曲多重モードの振動子を駆動源とする紙
等の可とう性のある薄いフィルム状移動体を振動子の圧
電セラミックが接着されている面の反対側の面の所定の
位置で圧接して該移動体が効率良く移動するようにした
紙送り用超音波モータに於て、圧電セラミックが接着さ
れた振動板の面の一次の長手縦振動の節と一次の幅屈曲
振動の節の二つの交点Ａ、Ｂを固定台14に固定支持し、
縦屈曲多重振動モード及び振動変位に影響を与えないよ
うにするとともに、振動体1-1が外力あるいはそれ自身
の振動で移動したりしないようにする。更に移動体が効
率よく移動する移動体圧接位置Ｃで幅方向に描いた線と
一次の幅屈曲振動の節の二つの交点Ｄ、Ｅを可動支持部
材18により可動支持し、縦屈曲多重振動モード及び振動
変位に影響を与えないようにするとともに、圧接力で振
動子11及び支持部材17が変形することのないようにす
る。(Operation) As shown in FIGS. 1 (a) and 1 (b), the present invention has a primary longitudinal and longitudinal structure constituted by bonding a piezoelectric ceramic plate 12 to one surface of a rectangular diaphragm 11. Vibration and a flexible thin film-shaped moving body such as paper driven by a longitudinal bending multi-mode vibrator that operates in the first width bending vibration mode In an ultrasonic motor for paper feeding in which the movable body is efficiently moved by pressing at a predetermined position on the opposite surface, the primary longitudinal longitudinal vibration of the surface of the diaphragm to which the piezoelectric ceramic is adhered The two intersections A and B of the node and the node of the first width bending vibration are fixedly supported on the fixed base 14,
The longitudinal bending multiple vibration mode and the vibration displacement are not affected, and the vibrating body 1-1 is prevented from moving due to an external force or its own vibration. Further, two intersections D and E of the line drawn in the width direction at the moving body pressure contact position C where the moving body moves efficiently and the node of the primary width bending vibration are movably supported by the movable supporting member 18, and the longitudinal bending multiple vibration mode In addition, the vibration displacement is not affected, and the vibrator 11 and the support member 17 are not deformed by the pressure contact force.
（実施例） 以下、本発明の実施例について、図を参照しながら説明
する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第２図（ａ），（ｂ）は本発明の一つの例で、長さＬ＝
102mm、幅Ｗ＝18.5mm、厚さｔ＝1.5mmの形状のステンレ
ス鋼（SUS303）から成る振動板21の一方の面に長さL1＝
20mm、幅Ｗ＝18.5mm、厚さｔ＝0.5mmの形状の圧電セラ
ミック22を一次の長手縦振動の節から各々5mm離して接
着されている。固定支持及び可動支持は振動板21の幅の
両端部から各々W1＝4.1mmの位置で、直径3mm、長さ5mm
の支持部材27の一方の端を第２図のように接合し、支持
部材27の他方の端を土台24に接合し、更に圧接部材25の
反対側に直径5mm、厚さ2mmのステンレス鋼製のローラ支
持部材28が位置するように支持部材28を土台2-4に接合
した。第２図のように紙26を振動子21上に置き、ステン
レス鋼製ローラの周面をビニールでコートされた圧接部
材25で約200gで紙を振動子に圧接し、80ボルト、25kHz
の高周波電圧を圧電セラミックに印加した。その結果、
紙26は図上で右側へ移動した。本発明の紙送り用超音波
モータの振動子を触ったり、衝撃を与えたり、また傾け
たりした後駆動しても、推進力、紙送り速度の変化は１
％以下に抑えられた。FIGS. 2A and 2B show an example of the present invention, in which the length L =
102 mm, width W = 18.5 mm, and thickness t = 1.5 mm. The diaphragm 21 made of stainless steel (SUS303) has a length L 1 =
Piezoelectric ceramics 22 having a shape of 20 mm, width W = 18.5 mm, and thickness t = 0.5 mm are bonded 5 mm apart from the primary longitudinal and longitudinal vibration nodes. Fixed support and movable support are at the position of W 1 = 4.1mm from both ends of the width of diaphragm 21, diameter 3mm, length 5mm.
The one end of the support member 27 is joined as shown in FIG. 2, the other end of the support member 27 is joined to the base 24, and the opposite side of the press contact member 25 is made of stainless steel having a diameter of 5 mm and a thickness of 2 mm. The support member 28 was joined to the base 2-4 so that the roller support member 28 was positioned. As shown in Fig. 2, the paper 26 is placed on the vibrator 21, and the peripheral surface of the stainless steel roller is pressed onto the vibrator by the pressure contact member 25 coated with vinyl at about 200 g, and the voltage is 80 V, 25 kHz.
Was applied to the piezoelectric ceramic. as a result,
Paper 26 has moved to the right in the figure. Even if the vibrator of the ultrasonic motor for paper feeding of the present invention is touched, impacted, or tilted and then driven, the change in propulsive force and paper feeding speed is 1
% Was suppressed to below.
前記実施例で使用した支持部材28の代わりに、第３図
（ａ），（ｂ）に示すような一方の端が半球面状のテフ
ロン製の支持部材38を使用し、他は前記実施例と同様に
して紙送り用超音波モータを駆動したところ、前記実施
例と全く同様の結果が得られた。Instead of the supporting member 28 used in the above-mentioned embodiment, a supporting member 38 made of Teflon having one end having a hemispherical shape is used as shown in FIGS. When the ultrasonic motor for paper feeding was driven in the same manner as in, the same result as in the above-mentioned example was obtained.
第４図（ａ），（ｂ）は第３図による実施例で使用した
支持部材38のを支持部材37の位置に対して対象になる位
置にも設置した場合であり、この場合も、二つの前記実
施例と同様の結果が得られた。FIGS. 4 (a) and 4 (b) show the case where the support member 38 used in the embodiment shown in FIG. 3 is also installed at a target position with respect to the position of the support member 37. Similar results were obtained with the four previous examples.
（発明の効果） 本発明によれば、縦屈曲多重モード及びその振幅が変化
しない振動子の位置を固定支持及び可動支持すること
で、該モータあるいは該モータが組み込まれた設置の移
動あるいは設置の際の衝撃等により、該モータの本来の
性能を劣化させてしまうことが起こったり、あるいは全
く該モータの機能を持たない状態になったりすることの
無い、誰でも取扱ができる紙送り用超音波モータが実現
できる。(Effects of the Invention) According to the present invention, the longitudinal bending multimode and the position of the vibrator whose amplitude does not change are fixedly and movably supported, so that the movement of the motor or the installation in which the motor is installed or the installation An ultrasonic paper-feeding ultrasonic wave that can be handled by anyone, without causing the original performance of the motor to be deteriorated by the impact or the like, or without having a function of the motor at all. A motor can be realized.
第１図（ａ），（ｂ）、第２図（ａ），（ｂ）、第３図
（ａ），（ｂ）、第４図（ａ），（ｂ）は本発明の超音
波モータの例を示す図。第５図（ａ），（ｂ）は従来の
超音波モータを示す図。これらの図で、11、12、51は振
動子、12、22、52は圧電セラミック板、5-3はスポン
ジ、14、24、54は土台、25、55は圧接部材、26、56は
紙、17、27は振動子の固定支持部材、18、28は振動子の
可動支持部材を示す。1 (a), (b), 2 (a), (b), 3 (a), (b), 4 (a), (b) are ultrasonic motors of the present invention. FIG. 5 (a) and 5 (b) are views showing a conventional ultrasonic motor. In these figures, 11, 12, 51 are vibrators, 12, 22, 52 are piezoelectric ceramic plates, 5-3 are sponges, 14, 24, 54 are bases, 25, 55 are pressure contact members, 26, 56 are paper. Reference numerals 17, 17 and 27 denote fixed support members for the vibrator, and reference numerals 18 and 28 denote movable support members for the vibrator.
Claims (1)
クを接着して構成される１次の長手縦振動と１次の幅屈
曲振動モードで動作する縦屈曲多重モード振動子を駆動
源とした、超音波モータに於て、圧電セラミックが接着
された振動板の一次の長手縦振動の節と一次の幅屈曲振
動の節の二つの交点部を固定支持し、更に、移動体圧接
位置から振動板の幅方向に伸ばした線と一次の幅屈曲振
動の節の交点を可動支持することを特徴とする超音波モ
ータ。1. A driving source is a longitudinal bending multimode oscillator which operates in a primary longitudinal longitudinal vibration mode and a primary width bending vibration mode, which is formed by bonding a piezoelectric ceramic to one surface of a rectangular parallelepiped diaphragm. In the ultrasonic motor, the two points of intersection of the primary longitudinal longitudinal vibration node and the primary width bending vibration node of the vibration plate to which the piezoelectric ceramic is bonded are fixedly supported, and further, from the moving body pressure contact position. An ultrasonic motor characterized by movably supporting an intersection of a line extending in a width direction of a diaphragm and a node of a primary width bending vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62250531A JPH074072B2 (en) | 1987-10-02 | 1987-10-02 | Ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62250531A JPH074072B2 (en) | 1987-10-02 | 1987-10-02 | Ultrasonic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0197176A JPH0197176A (en) | 1989-04-14 |
| JPH074072B2 true JPH074072B2 (en) | 1995-01-18 |
Family
ID=17209283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62250531A Expired - Lifetime JPH074072B2 (en) | 1987-10-02 | 1987-10-02 | Ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074072B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380640B (en) * | 2019-06-20 | 2021-09-14 | 南京理工大学 | H-shaped piezoelectric ultrasonic driver and security device |
-
1987
- 1987-10-02 JP JP62250531A patent/JPH074072B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 信学技報Ｖｏｌ．８７，Ｎｏ．４６［ＵＳ８７−５、１９８７年５月２５日Ｐ．２９〜３６ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0197176A (en) | 1989-04-14 |
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