JPH0524218A - Kinetic converter of piezoelectric element - Google Patents
Kinetic converter of piezoelectric elementInfo
- Publication number
- JPH0524218A JPH0524218A JP18118991A JP18118991A JPH0524218A JP H0524218 A JPH0524218 A JP H0524218A JP 18118991 A JP18118991 A JP 18118991A JP 18118991 A JP18118991 A JP 18118991A JP H0524218 A JPH0524218 A JP H0524218A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- needle
- expansion
- mover
- vibration
- 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
Landscapes
- Impact Printers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主としてドットインパ
クト印字ヘッドに使用される圧電素子の運動変換装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motion converting device for a piezoelectric element mainly used in a dot impact printing head.
【０００２】[0002]
【従来の技術】従来、圧電素子の伸縮により印字媒体に
打点する印字ワイヤを駆動するドットインパクト印字ヘ
ッドにおける、圧電素子の伸縮運動を伝達する運動変換
装置は、特開平２−５５１４９号公報に開示されている
ように、可動子及び運動伝達機構の慣性により可動子の
往復運動が圧電素子の伸縮運動に対して遅れることによ
り発生する引張力によって、圧電素子が破損することを
防止する機構を設けていた。2. Description of the Related Art Conventionally, in a dot impact print head for driving a print wire that prints on a print medium by expanding and contracting a piezoelectric element, a motion converting device for transmitting the expanding and contracting motion of the piezoelectric element is disclosed in Japanese Patent Laid-Open No. 2-55149. As described above, a mechanism is provided to prevent the piezoelectric element from being damaged by the tensile force generated by the reciprocating motion of the mover being delayed with respect to the expansion and contraction motion of the piezoelectric element due to the inertia of the mover and the motion transmitting mechanism. Was there.
【０００３】例えば、図６に示すように圧電素子７０の
伸縮方向の一端を支持する支持フレーム７２の基部７４
には、予圧部材７６と温度補償部材７８を介して圧電素
子７０を固定し、圧電素子７０の他端と可動子８０との
対向面にスペーサ８２、８４を設け、該スペーサ８２、
８４を圧着する状態にしてそれらにより非接合部８６を
形成する。当該非接合部８６を介して圧電素子７０の伸
縮により可動子８０を駆動し、駆動ばね体８８、支持ば
ね体９０を介して傾動体９２及び傾動アーム９４により
印字ワイヤ９６を駆動するようにしていた。従って、上
記圧電素子７０の運動変換装置は、非接合部８６を設て
いるため、可動子８０、傾動体９２及び傾動アーム９４
等の慣性による圧電素子７０の伸縮運動に対する往復運
動の遅れにより生じる引張力による圧電素子７０の破損
を防止していた。For example, as shown in FIG. 6, a base portion 74 of a support frame 72 for supporting one end of the piezoelectric element 70 in the expansion / contraction direction.
The piezoelectric element 70 is fixed via a precompression member 76 and a temperature compensating member 78, and spacers 82, 84 are provided on the opposing surfaces of the other end of the piezoelectric element 70 and the mover 80.
The non-bonded portion 86 is formed by bringing the 84 into a crimped state. The movable element 80 is driven by expansion and contraction of the piezoelectric element 70 via the non-bonding portion 86, and the printing wire 96 is driven by the tilting body 92 and tilting arm 94 via the drive spring body 88 and the support spring body 90. It was Therefore, in the motion converting device for the piezoelectric element 70, since the non-joint portion 86 is provided, the mover 80, the tilting body 92, and the tilting arm 94.
The piezoelectric element 70 is prevented from being damaged by the tensile force generated by the delay of the reciprocating movement relative to the expansion and contraction movement of the piezoelectric element 70 due to the inertia.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、圧電素
子７０と可動子８０は圧着されているだけなので、駆動
パルスのタイミングによっては、該圧電素子７０と該可
動子８０の間には隙間が生じてしまう。すなわち、図４
（ｄ）に示す圧電素子７０にかかる電圧波形は圧電素子
７０の動作波形とほぼ等しいので、例えば時間が１７５
μＳの時、印加電圧が０であるため、圧電素子７０の伸
びは０であるのに対し、可動子８０は図４（ａ）に示す
ように１５μｍ変位している。当然この瞬間は両者７
０、８０は離れている。その隙間が生じた瞬間は、該圧
電素子７０は支持フレーム７２の基部７４に固着された
片持梁の状態になるので、圧電素子の７０の伸縮方向に
対して直角な方向、すなわち支持フレーム７２の方向
（以下、左右方向という）、及び当該支持フレーム７２
の面に対する垂直方向（以下、前後方向という）に振動
し、また、可動子８０は圧電素子７０の左右方向及び伸
縮方向に振動し（図４（ａ）、（ｂ）参照）、さらに、
伸縮方向の軸回りにも回転する（図４（ｃ）参照）。However, since the piezoelectric element 70 and the movable element 80 are only pressure-bonded to each other, a gap is generated between the piezoelectric element 70 and the movable element 80 depending on the timing of the driving pulse. I will end up. That is, FIG.
Since the voltage waveform applied to the piezoelectric element 70 shown in (d) is almost equal to the operation waveform of the piezoelectric element 70, for example, the time is 175
At μS, since the applied voltage is 0, the extension of the piezoelectric element 70 is 0, while the mover 80 is displaced by 15 μm as shown in FIG. 4A. Naturally both are 7 at this moment
0 and 80 are far apart. At the moment when the gap is generated, the piezoelectric element 70 is in the state of a cantilever fixed to the base portion 74 of the support frame 72, so that the piezoelectric element 70 is in a direction perpendicular to the expansion / contraction direction of the piezoelectric element 70, that is, the support frame 72. Direction (hereinafter, referred to as left-right direction) and the support frame 72.
In the direction perpendicular to the plane (hereinafter, referred to as the front-back direction), the mover 80 vibrates in the left-right direction and the expansion-contraction direction of the piezoelectric element 70 (see FIGS. 4A and 4B), and
It also rotates around the axis of expansion and contraction (see FIG. 4C).
【０００５】そして、振動している該圧電素子７０と該
可動子８０が再び圧着するときには、該圧電素子７０、
該可動子８０にそれぞれに圧着されているスペーサ８
２、８４は振動による摩擦を生じる。従って、この現象
を繰り返していると摩耗してしまい、印字ワイヤ９６の
突出量が変わってくる。When the vibrating piezoelectric element 70 and the mover 80 are pressed again, the piezoelectric element 70,
Spacers 8 that are respectively crimped to the mover 80.
2, 84 causes friction due to vibration. Therefore, if this phenomenon is repeated, it wears and the projection amount of the printing wire 96 changes.
【０００６】また、隙間が生じている時間は印字ギャッ
プ等によって異なってくるので、２枚のスペーサ８２、
８４が圧着する相対的位置も異なってくる、これによっ
ても印字ワイヤ９６の突出量が変わってしまう。さら
に、該圧電素子７０を駆動させると、該可動子８０と瞬
間的に離れて、再び圧着するが、該圧電素子７０にかか
る電圧を０Ｖにしておいても圧着した時の反発で再び該
可動子８０と離れてしまい結果的に二次バウンドが大き
くなってしまう。Further, since the time during which the gap is generated varies depending on the printing gap and the like, the two spacers 82,
The relative position at which 84 is crimped also changes, which also changes the amount of protrusion of the print wire 96. Further, when the piezoelectric element 70 is driven, it is momentarily separated from the movable element 80 and pressure-bonded again, but even if the voltage applied to the piezoelectric element 70 is set to 0V, the movable element 80 moves again due to the repulsion when pressure-bonded. The child is separated from the child 80, and as a result, the secondary bounce becomes large.
【０００７】本発明は、上述した問題点を解決するため
になされたものであり、圧電素子と可動子の振動を防止
し、圧着面の相対的ずれによる摩擦を防止し、かつ可動
子の二次バウンドを小さくする運動変換装置を提供する
ことを目的とする。The present invention has been made in order to solve the above-mentioned problems, and prevents the vibration of the piezoelectric element and the mover, prevents the friction due to the relative displacement of the crimping surface, and prevents the vibration of the mover from occurring. It is an object of the present invention to provide a motion conversion device that reduces the next bounce.
【０００８】[0008]
【課題を解決するための手段】この目的を達成するため
に本発明の圧電素子の運動変換装置は、圧電素子の伸縮
方向の一端を支持する基部を有する支持フレームと、前
記圧電素子の伸縮方向の他端に配置された可動子と、該
可動子に連結され前記圧電素子の伸縮運動を伝達する運
動変換機構と、前記基部、圧電素子及び可動子の相互の
対向面の内少なくとも１箇所の対向面を接離可能にした
接合部と、該接合部の周囲を覆った弾性体とを設けた構
成としたものである。In order to achieve this object, a motion conversion device for a piezoelectric element according to the present invention comprises a support frame having a base for supporting one end of the piezoelectric element in the expansion / contraction direction, and the expansion / contraction direction of the piezoelectric element. Of a movable element arranged at the other end of the movable element, a motion conversion mechanism connected to the movable element and transmitting the expansion and contraction movement of the piezoelectric element, and at least one of the base, the piezoelectric element and the movable element facing each other. The configuration is such that a joining portion whose facing surfaces are separable from each other and an elastic body that covers the periphery of the joining portion are provided.
【０００９】[0009]
【作用】上記構成を有する本発明の圧電素子の運動変換
装置においては、支持フレームが圧電素子の伸縮方向の
一端を支持する基部を有している。また、可動子は圧電
素子の伸縮方向の他端に配置され、運動伝達機構は該可
動子に連結され、圧電素子の伸縮運動を伝達する。接離
可能な接合部は基部、圧電素子及び可動子の相互の対向
面の内少なくとも１箇所に設けられ、弾性体は該接合部
の周囲を覆っている。In the motion converting device for a piezoelectric element of the present invention having the above structure, the support frame has a base portion for supporting one end of the piezoelectric element in the expansion / contraction direction. The mover is arranged at the other end of the piezoelectric element in the expansion / contraction direction, and the motion transmitting mechanism is connected to the mover to transmit the expansion / contraction motion of the piezoelectric element. The contactable and separable joint is provided at at least one of the mutually facing surfaces of the base, the piezoelectric element, and the mover, and the elastic body covers the periphery of the joint.
【００１０】[0010]
【実施例】以下、本発明を具体化した一実施例を図面を
参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１１】この実施例は本発明の圧電素子の運動変換
装置をドットインパクト型印字ヘッド装置に応用したも
のであり、図２に示すように、ドットインパクト型印字
ヘッド装置１０においては、本発明の圧電素子の運動変
換装置を組み込んだ印字ユニット１２がヘッド本体１４
の裏面側で放射状に配設され、ヘッド本体１４の前面に
は、各印字ユニット１２における印字ワイヤ１６を移動
案内するための所定数の案内板１８が内装された中空の
ノーズ部２０が突設されている。In this embodiment, the motion converting device for a piezoelectric element according to the present invention is applied to a dot impact type print head device. As shown in FIG. 2, in a dot impact type print head device 10, the present invention is applied. A print unit 12 incorporating a motion converting device for a piezoelectric element is used as a head body 14
A hollow nose portion 20 is radially arranged on the back side of the head main body 14 and has a hollow nose portion 20 in which a predetermined number of guide plates 18 for moving and guiding the printing wires 16 in each printing unit 12 are installed. Has been done.
【００１２】次に、印字ユニット１２における圧電素子
の運動変換装置の構成について図１を参照して説明す
る。Next, the structure of the motion converting device for the piezoelectric element in the printing unit 12 will be described with reference to FIG.
【００１３】印字ユニット１２においては、圧電素子２
２の伸縮方向の一端を支持する基部２４を有する支持フ
レーム２６は所定の板厚の金属板により構成され、軽量
化のために薄肉部２８が設けられ、圧電素子２２の伸縮
方向と平行して延在する縦長四角形部を２つを有し、圧
電素子２２を挟むように基部２４により前記２つの縦長
四角形部を接続してＵ字形に形成されている。圧電素子
２２の伸縮方向の一端を支持する基部２４は、該印字ユ
ニット１２の最下部に設けられている。そして、圧電素
子２２に予圧を与える予圧部材３０は基部２４に接着固
定され、温度上昇により縮小する圧電素子２２の寸法を
補正するための温度補償部材３２は予圧部材３０に接着
固定され、圧電素子２２は温度補償部材３２に接着固定
されている。In the printing unit 12, the piezoelectric element 2
The support frame 26 having the base portion 24 that supports one end in the expansion / contraction direction of 2 is formed of a metal plate having a predetermined plate thickness, is provided with a thin portion 28 for weight reduction, and is parallel to the expansion / contraction direction of the piezoelectric element 22. It has two vertically elongated quadrangular portions extending, and the two vertically elongated quadrangular portions are connected by a base 24 so as to sandwich the piezoelectric element 22 and formed in a U shape. A base portion 24 that supports one end of the piezoelectric element 22 in the expansion / contraction direction is provided at the bottom of the printing unit 12. Then, a preload member 30 for preloading the piezoelectric element 22 is adhesively fixed to the base portion 24, and a temperature compensating member 32 for correcting the dimension of the piezoelectric element 22 that shrinks due to a temperature rise is adhesively fixed to the preload member 30. 22 is adhered and fixed to the temperature compensation member 32.
【００１４】圧電素子２２は圧電セラミックスを積層状
に接着して四角柱状に形成されており、当該圧電素子２
２の伸縮方向の他端にはセラミックス製のスペーサ３４
を接着固定し、当該スペーサ３４に対向する面にある可
動子３６にも同じくセラミックス製のスペーサ３８をス
ペーサ３４に対向するように可動子３６と接着固定して
ある。当該スペーサ３４、３８は互いに対向面で接離可
能になっており、該対向面には潤滑剤４０を塗布してあ
り、当該２枚のスペーサ３４、３８から形成される接合
部４２全体を一つのシリコンゴム等で形成された弾性体
４４で覆う。The piezoelectric element 22 is formed into a rectangular column shape by adhering piezoelectric ceramics in a laminated shape.
At the other end in the direction of expansion and contraction of 2 is a spacer 34 made of ceramics.
Is also fixed by adhesion, and a spacer 38 made of ceramics is also fixed by adhesion to the mover 36 on the surface of the mover 36 facing the spacer 34 so as to face the spacer 34. The spacers 34 and 38 can be brought into contact with and separated from each other on the opposing surfaces, and a lubricant 40 is applied to the opposing surfaces, so that the entire joint portion 42 formed by the two spacers 34 and 38 is removed. It is covered with an elastic body 44 formed of two silicone rubbers or the like.
【００１５】駆動ばね体４６の一端は、可動子３６の側
面にろう付け等により固着され、支持ばね体４８は一端
を駆動ばね体４６と傾動体５０により固着され、他端を
支持フレーム部２６にろう付け固着されている。貫通孔
５２有する傾動アーム５４は傾動体５０にろう付けによ
り嵌合固定されている。印字ワイヤ１６の基部は該傾動
アーム５４のワイヤ取り付け溝５６に挿入されろう付け
されている。傾動アーム５４と支持フレーム２６との間
には、支持部側ストッパ５８が支持フレーム２６に固着
されており、アーム側ストッパ６０が傾動アーム５４に
固着されている。One end of the drive spring body 46 is fixed to the side surface of the mover 36 by brazing or the like, one end of the support spring body 48 is fixed to the drive spring body 46 and the tilting body 50, and the other end thereof is the support frame portion 26. It is brazed and fixed. The tilting arm 54 having the through hole 52 is fitted and fixed to the tilting body 50 by brazing. The base of the print wire 16 is inserted into the wire mounting groove 56 of the tilting arm 54 and brazed. Between the tilt arm 54 and the support frame 26, a support portion side stopper 58 is fixed to the support frame 26, and an arm side stopper 60 is fixed to the tilt arm 54.
【００１６】次に、上記のように構成された印字ユニッ
ト１２の動作について図３を参照して説明する。Next, the operation of the printing unit 12 configured as described above will be described with reference to FIG.
【００１７】印字データに基づいて電圧が印加される
と、圧電素子２２はその積層方向（長手方向）に伸縮
し、そして、圧電素子２２及び可動子３６が矢印Ｂ方向
に伸長するとき、前記両ばね体４６、４８の連結部とな
っている傾動体５０が矢印Ａ方向に回動変位して、その
変位量を傾動アーム５４で拡大し、印字ワイヤ１６をノ
ーズ部２０から突出するように駆動させる。そして、電
圧の印加が解除されると、両支持ばね体４６、４８の弾
性力により、傾動アーム５４が逆方向に回動し、樹脂製
等のアーム側ストッパ６０が支持部側ストッパ５８に当
接して止まる。When a voltage is applied based on the print data, the piezoelectric element 22 expands and contracts in the stacking direction (longitudinal direction), and when the piezoelectric element 22 and the mover 36 expand in the direction of arrow B, both The tilting body 50, which is the connecting portion of the spring bodies 46 and 48, is rotationally displaced in the direction of arrow A, the displacement amount is enlarged by the tilting arm 54, and the printing wire 16 is driven so as to project from the nose portion 20. Let Then, when the application of the voltage is released, the tilting arm 54 rotates in the opposite direction by the elastic force of the support spring bodies 46 and 48, and the arm side stopper 60 made of resin or the like contacts the support portion side stopper 58. Stop in contact.
【００１８】圧電素子２２が電圧の印加を解除したこと
により定常状態長に戻るとき、可動子３６は傾動アーム
５４や印字ワイヤ１６の慣性により圧電素子２２の動き
よりも遅れて動く。当該状態においては、両スペーサ３
４と３８の接合部分では隙間が生じる。このとき圧電素
子２２は片持梁と同じ状態になり不安定になるが、２枚
のスペーサ３４、３８は、１つの弾性体４４で全体を覆
われているので、圧電素子２２の伸縮方向の振動、伸縮
方向に対する直角方向の振動は弾性体４４の弾性により
吸収される。さらに、可動子３６の振動及び可動子３６
の圧電素子２２の伸縮方向軸回りの回転運動も弾性体４
４が吸収する。また、図４（ｂ）に示すように可動子３
６が変位して戻ってくる時、圧電素子２２と衝突して、
その反発で可動子３６が二次バウンドを繰り返すが、２
枚のスペーサ３４、３８を弾性体４４で覆うことによ
り、可動子３６の動きが抑制され、可動子３６の二次バ
ウンドが減少し、ひいては印字ワイヤ１６の先端におい
ても二次バウンドが減少する。When the piezoelectric element 22 returns to the steady-state length by releasing the voltage application, the mover 36 moves later than the movement of the piezoelectric element 22 due to the inertia of the tilting arm 54 and the print wire 16. In this state, both spacers 3
A gap is formed at the joining portion of 4 and 38. At this time, the piezoelectric element 22 becomes in the same state as the cantilever and becomes unstable, but since the two spacers 34 and 38 are entirely covered by the one elastic body 44, the piezoelectric element 22 can be expanded and contracted in the expansion and contraction direction. The elasticity of the elastic body 44 absorbs the vibration and the vibration in the direction perpendicular to the expansion / contraction direction. Further, the vibration of the mover 36 and the mover 36
The rotational movement of the piezoelectric element 22 around the axis of expansion and contraction also causes elastic body 4
4 absorbs. In addition, as shown in FIG.
When 6 is displaced and returns, it collides with the piezoelectric element 22,
The repulsion causes the mover 36 to repeatedly bounce, but 2
By covering the spacers 34, 38 with the elastic body 44, the movement of the mover 36 is suppressed, the secondary bound of the mover 36 is reduced, and the secondary bound of the tip of the print wire 16 is also reduced.
【００１９】本実施例のように接合部４２を形成するス
ペーサ３４、３８全体を弾性体４４により覆うことで、
接合部４２を形成するスペーサ３４、３８が離れたとき
に生じる可動子３６の圧電素子２２の伸縮方向に対する
振動、左右方向の振動、伸縮方向軸回りの回転及び２次
バンドを防止し、また、圧電素子２２の伸縮方向に対す
る左右方向の振動を防止し、さらにスペーサ３４、３８
の圧接面の摩耗も減少させることができる。By covering the entire spacers 34, 38 forming the joint portion 42 with the elastic body 44 as in the present embodiment,
Vibration of the mover 36 with respect to the expansion / contraction direction of the piezoelectric element 22, lateral vibration, rotation around the expansion / contraction direction axis, and a secondary band that occur when the spacers 34, 38 forming the joint portion 42 are separated are prevented. Vibration of the piezoelectric element 22 in the lateral direction with respect to the expansion / contraction direction is prevented, and the spacers 34, 38 are further prevented.
It is also possible to reduce the wear of the press contact surface.
【００２０】尚、２枚のスペーサ３４、３８の接触面に
潤滑材を塗布し、２枚のスペーサ３４、３８が再び圧接
するときの摩擦による摩耗の防止の効果を高める構造と
することもできる。この場合、２枚のスペーサ３４、３
８の周辺を弾性体４４で覆っているので、潤滑剤が外へ
飛び散ることもない。A lubricating material may be applied to the contact surfaces of the two spacers 34 and 38 so as to enhance the effect of preventing abrasion due to friction when the two spacers 34 and 38 are pressed again. .. In this case, the two spacers 34, 3
Since the periphery of 8 is covered with the elastic body 44, the lubricant does not splash outside.
【００２１】さらに、接合部を弾性体で覆う代わりに、
図５のように圧電素子側スペーサ６２と可動子側スペー
サ６４または可動子３６とを直接内ばね６６で結合し２
枚のスペーサ６２、６４が離れたときに張力が発生する
機構も考えられる。Further, instead of covering the joint with an elastic body,
As shown in FIG. 5, the piezoelectric element side spacer 62 and the mover side spacer 64 or the mover 36 are directly connected by the inner spring 66.
A mechanism in which tension is generated when the spacers 62 and 64 are separated is also conceivable.
【００２２】[0022]
【発明の効果】以上説明したことから明かなように、本
発明によれば、圧電素子の伸縮方向の一端を支持する基
部を有する支持フレームと、前記圧電素子の伸縮方向の
他端に配置された可動子と、該可動子に連結され、圧電
素子の伸縮運動を伝達する運動変換機構と、前記基部、
圧電素子及び可動子の相互の対向面の内少なくとも１箇
所の対向面を接離可能にした接合部と、該接合部の周囲
を覆った弾性体とを設けているので、圧電素子の振動、
可動子の振動及び回転を防止し、また可動子の二次バウ
ンドも防止し、さらに接触面の摩擦による摩耗を防止す
ることができる。As is apparent from the above description, according to the present invention, the support frame having the base portion for supporting one end of the piezoelectric element in the expansion / contraction direction and the other end of the piezoelectric element in the expansion / contraction direction are arranged. A movable element, a motion conversion mechanism connected to the movable element, for transmitting expansion and contraction movement of the piezoelectric element, and the base portion,
The piezoelectric element and the mover are provided with a joint portion capable of contacting and separating at least one of the opposing surfaces, and an elastic body covering the periphery of the joint portion.
It is possible to prevent vibration and rotation of the mover, prevent secondary movement of the mover, and prevent wear of the contact surface due to friction.
【図１】本実施例の印字ユニットの側面図である。FIG. 1 is a side view of a printing unit of this embodiment.
【図２】本実施例のドットインパクト型印字ヘッド装置
の断面図である。FIG. 2 is a cross-sectional view of a dot impact type print head device of this embodiment.
【図３】本実施例の運動変換機構を示す拡大図である。FIG. 3 is an enlarged view showing a motion conversion mechanism of this embodiment.
【図４】圧電素子と可動子との動作波形を示す図であ
る。FIG. 4 is a diagram showing operation waveforms of a piezoelectric element and a mover.
【図５】他の実施例の接合部を示す拡大図である。FIG. 5 is an enlarged view showing a joint portion of another embodiment.
【図６】従来技術の印字ユニットの側面図である。FIG. 6 is a side view of a conventional printing unit.
２２ 圧電素子 ２４ 基部 ２６ 支持フレーム ３６ 可動子 ４２ 接合部 ４４ 弾性体 22 Piezoelectric element 24 Base 26 Support frame 36 Mover 42 Joining part 44 Elastic body
Claims (1)
部を有する支持フレームと、 前記圧電素子の伸縮方向の他端に配置された可動子と、 該可動子に連結され、前記圧電素子の伸縮運動を伝達す
る運動変換機構と、 前記基部、前記圧電素子及び前記可動子の相互の対向面
の内少なくとも１箇所の対向面を接離可能にした接合部
と、 該接合部の周囲を覆った弾性体とを設けることを特徴と
する圧電素子の運動変換装置。Claim: What is claimed is: 1. A support frame having a base portion for supporting one end of the piezoelectric element in the expansion / contraction direction, a mover arranged at the other end of the piezoelectric element in the expansion / contraction direction, and a connection to the mover. A motion conversion mechanism for transmitting the expansion and contraction movement of the piezoelectric element, and a joint portion in which at least one of the mutually facing surfaces of the base portion, the piezoelectric element, and the movable element can be brought into contact with and separated from each other, A motion conversion device for a piezoelectric element, comprising: an elastic body covering the periphery of the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18118991A JP2979750B2 (en) | 1991-07-22 | 1991-07-22 | Motion conversion device for piezoelectric element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18118991A JP2979750B2 (en) | 1991-07-22 | 1991-07-22 | Motion conversion device for piezoelectric element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0524218A true JPH0524218A (en) | 1993-02-02 |
| JP2979750B2 JP2979750B2 (en) | 1999-11-15 |
Family
ID=16096416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18118991A Expired - Fee Related JP2979750B2 (en) | 1991-07-22 | 1991-07-22 | Motion conversion device for piezoelectric element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2979750B2 (en) |
-
1991
- 1991-07-22 JP JP18118991A patent/JP2979750B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2979750B2 (en) | 1999-11-15 |
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