JP2555667B2 - Piezoelectric motion converter - Google Patents
Piezoelectric motion converterInfo
- Publication number
- JP2555667B2 JP2555667B2 JP63014019A JP1401988A JP2555667B2 JP 2555667 B2 JP2555667 B2 JP 2555667B2 JP 63014019 A JP63014019 A JP 63014019A JP 1401988 A JP1401988 A JP 1401988A JP 2555667 B2 JP2555667 B2 JP 2555667B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- leaf springs
- frame
- spring member
- tilting body
- 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
- 230000008602 contraction Effects 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005219 brazing Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/27—Actuators for print wires
- B41J2/295—Actuators for print wires using piezoelectric elements
Landscapes
- Impact Printers (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、主として印字ヘッドに採用される圧電素
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 print head.
（従来の技術） 圧電素子の運動変換装置としては、例えば、すでに同
一出願人によって開発がなされた実願昭62−165955号の
ものがある。(Prior Art) As a motion converting device for a piezoelectric element, there is, for example, Japanese Patent Application No. 62-165955, which has been developed by the same applicant.
すなわち、これにおいては、第５図に示すように、圧
電素子１の伸縮方向一端を支持する基部３を備え、かつ
圧電素子１に沿って延在するフレーム２と、前記圧電素
子１の伸縮方向他端に配設された可動子４とに、一対の
板ばね7,8の一端部がそれぞれろう付けによって固着さ
れる。さらに、両板ばね7,8の他端に跨がって傾動体９
がろう付けによって固着されている。そして、圧電素子
１の伸縮に基づく前記両板ばね7,8のたわみによって傾
動体９を傾動させるようになっている。That is, in this, as shown in FIG. 5, a frame 2 having a base 3 for supporting one end of the piezoelectric element 1 in the expansion / contraction direction and extending along the piezoelectric element 1 and the expansion / contraction direction of the piezoelectric element 1 are provided. One ends of the pair of leaf springs 7 and 8 are fixed to the movable element 4 arranged at the other end by brazing. Further, the tilting body 9 is straddled over the other ends of the leaf springs 7 and 8.
Are fixed by brazing. The tilting body 9 is tilted by the bending of the leaf springs 7 and 8 due to the expansion and contraction of the piezoelectric element 1.
（発明が解決しようとする課題） ところで、このような構造の運動変換装置において
は、圧電素子１の伸縮に基づく両板ばね7,8のたわみに
よる変位量は、フレーム２並びに可動子４側に比し、傾
動体９側の変位量が著しく大きくなる。そして、両板ば
ね7,8の他端部とこれに跨がる傾動体９とのろう付け部
分Ａには、引張り荷重と圧縮荷重とがくり返し作用す
る。すると、前記ろう付け部分Ａにはクラックが発生
し、そのクラック部分に引張り荷重と圧縮荷重とが集中
的に作用することから、両板ばね7,8と傾動体９とが分
離するという問題点があった。(Problems to be solved by the invention) By the way, in the motion conversion device having such a structure, the amount of displacement due to the bending of the leaf springs 7 and 8 due to the expansion and contraction of the piezoelectric element 1 is caused to the frame 2 and the mover 4 side. In comparison, the amount of displacement on the tilting body 9 side is significantly increased. A tensile load and a compressive load repeatedly act on the brazing portion A between the other end portions of the leaf springs 7 and 8 and the tilting body 9 that extends over the other end portions. Then, a crack is generated in the brazed portion A, and the tensile load and the compressive load concentrate on the cracked portion, so that the leaf springs 7 and 8 are separated from the tilting body 9. was there.
また、上記従来のものでは、両板ばね７、８が相互に
接触しているため、繰り返し動作すると、その板ばねの
たわみ部が摩耗したり焼付けを起こすことがあった。Further, in the above-mentioned conventional one, since both the leaf springs 7 and 8 are in contact with each other, the repeated operation of the leaf springs may cause the flexure of the leaf springs to be worn or seized.
この発明の目的は、前記問題点を解決するために、板
ばねと傾動体との結合部分のクラック発生を防止すると
ともに板ばねの摩耗をなくして、耐久性の向上を図る。
また板ばねの間隔を高精度できわめて近接配置し、所期
の拡大率を安定して得る一方、部品点数を軽減して構造
を簡単化し、コスト低減を図ることである。In order to solve the above-mentioned problems, an object of the present invention is to prevent the occurrence of cracks at the connecting portion between the leaf spring and the tilting body and to eliminate the wear of the leaf spring to improve the durability.
Further, the intervals of the leaf springs are arranged with high accuracy and extremely close to each other to obtain a desired expansion rate stably, while reducing the number of parts to simplify the structure and reduce the cost.
（課題を解決するための手段） 前記目的を達成するために、この発明では、圧電素子
の伸縮方向一端を支持する基部を備え、かつ圧電素子に
沿って延在するフレームと、前記圧電素子の伸縮方向他
端に配設された可動子とに、一対の板ばねの一端部をそ
れぞれ固着し、前記圧電素子の伸縮に基づく前記板ばね
のたわみによってこれら両板ばねの他端に設けられた傾
動体を傾動させるようになした運動変換装置であって、
前記一対の板ばねは、１個のばね部材から構成されると
ともに、そのばね部材の一端から他端部に向けて設けら
れた割溝を隔てて形成され、前記傾動体は前記ばね部材
の前記他端部に一体に設けられているものである。(Means for Solving the Problems) In order to achieve the above object, in the present invention, a frame that includes a base portion that supports one end in the expansion and contraction direction of the piezoelectric element, and that extends along the piezoelectric element, and the piezoelectric element One end of each of the pair of leaf springs is fixed to a mover disposed at the other end in the extension / contraction direction, and the leaf spring is provided at the other ends of the leaf springs by the deflection of the leaf spring due to the extension / contraction of the piezoelectric element. A motion conversion device for tilting a tilting body,
The pair of leaf springs is composed of one spring member, and is formed with a split groove provided from one end of the spring member toward the other end, and the tilting body is formed of the spring member. It is integrally provided at the other end.
（作 用） したがって、この発明は、一対の板ばねを１個のばね
部材から構成し、そのばね部材の他端部に傾動体を結合
することで、二枚で一対をなす板ばねとこれら両板ばね
の他端部に跨がる傾動体との三者をろう付けによって固
着するものと異なり、その結合部分のクラック発生を防
止することができるとともに板ばねの接触による摩耗を
なくすことができる。また両板ばねをばね部材の一端か
ら他端部に向けて設けた割溝を隔てて形成することで、
両板ばねの間隔を高精度できわめて近接配置することが
でき、所期の拡大率を安定して得ることができる一方、
部品点数も軽減できる。(Operation) Therefore, according to the present invention, a pair of leaf springs are constituted by one spring member, and a tilting body is coupled to the other end portion of the spring member to form a pair of leaf springs with two springs. Unlike the one in which the tilting body that straddles the other end of both leaf springs is fixed by brazing, it is possible to prevent the occurrence of cracks in the joint portion and to eliminate the wear due to the contact of the leaf springs. it can. Further, by forming both leaf springs with a split groove provided from one end of the spring member toward the other end,
The distance between both leaf springs can be arranged very close to each other with high accuracy, and the desired expansion rate can be stably obtained, while
The number of parts can also be reduced.
（実施例） 以下、この発明の一実施例を第１図〜第３図にしたが
って説明する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.
この実施例では印字ヘッドに採用したものを例示する
ものであって、第１図において、電圧の印加によって伸
縮する圧電素子１は、積層状をなす圧電セラミックより
構成されている。In this embodiment, the one adopted for the print head is illustrated, and in FIG. 1, the piezoelectric element 1 which expands and contracts by the application of a voltage is composed of laminated piezoelectric ceramics.
前記圧電素子１を支持するためのフレーム２は、その
圧電素子１の伸縮方向とほぼ平行して延在する縦長四角
形で所定板厚の金属板より構成されている。このフレー
ム２の一端には圧電素子１の一端（下端）を一対のくさ
び部材13,14を介して支持するための基部３が横方向に
突設されている。The frame 2 for supporting the piezoelectric element 1 is formed of a vertically elongated rectangular metal plate having a predetermined plate thickness and extending substantially parallel to the expansion / contraction direction of the piezoelectric element 1. At one end of the frame 2, a base portion 3 for supporting one end (lower end) of the piezoelectric element 1 via a pair of wedge members 13 and 14 is laterally projected.
圧電素子１の他端（上端）には可動子４が配設され、
この可動子４とフレーム２の立上り部の上端部との間に
は、圧電素子１の伸縮に基づく可動子４の変位を傾動運
動に変換するための運動機構５が配設されている。この
運動機構５は所定板厚の縦長四角形状をなすばね部材６
を主体として構成されている。ばね部材６には、その長
手方向一端から他端部に向けかつその板厚の中央部にお
いて、割溝6aが形成されることで、この割溝6aを隔てて
対向する一対の板ばね7,8と、これら板ばね7,8の端部を
結合している傾動体９とが一体に構成される。そして、
両板ばね7,8は、フレーム２と可動子４との上端面より
所定長さだけ突出した状態において、これらフレーム２
と可動子４との対向面に形成されたばね取付面にろう付
けによってそれぞれ固着されている。さらに、両板ばね
7,8の対向面反対側には、フレーム２と可動子４との上
端面より突出している部分において凹部7a,8aが形成さ
れ、これによって薄肉とされた部分を弾性変形部として
いる。A mover 4 is arranged at the other end (upper end) of the piezoelectric element 1,
A moving mechanism 5 for converting a displacement of the mover 4 due to expansion and contraction of the piezoelectric element 1 into a tilting motion is arranged between the mover 4 and the upper end of the rising portion of the frame 2. The motion mechanism 5 is a spring member 6 having a vertically long rectangular shape with a predetermined plate thickness.
It is mainly composed of. A split groove 6a is formed in the spring member 6 from one end in the longitudinal direction of the spring member 6 to the other end thereof, and a pair of leaf springs 7 facing each other across the split groove 6a are formed. 8 and the tilting body 9 connecting the ends of the leaf springs 7 and 8 are integrally configured. And
Both leaf springs 7 and 8 are provided with a predetermined length from the upper end surfaces of the frame 2 and the mover 4 when these frame 2
And the movable element 4 are fixed to the spring mounting surface formed on the opposing surface by brazing. Furthermore, double leaf springs
Recesses 7a and 8a are formed on the opposite sides of the facing surfaces of 7 and 8 at the portions projecting from the upper end surfaces of the frame 2 and the movable element 4, and the thinned portions thereby serve as elastically deformable portions.
傾動体９には両板ばね7,8と直交する方向に切込まれ
たアーム取付溝9aが形成されている。そのアーム取付溝
9aには、ワイヤアーム10が、その基部において挿入され
ろう付けによって固着されている。このワイヤアーム10
の先端には印字ワイヤ10の基端がろう付けによって固着
されている。The tilting body 9 is formed with an arm mounting groove 9a cut in a direction orthogonal to the leaf springs 7 and 8. The arm mounting groove
The wire arm 10 is inserted into the base portion 9a at its base and fixed by brazing. This wire arm 10
The base end of the print wire 10 is fixed to the tip of the wire by brazing.
また、この実施例ではフレーム２と可動子４とが個別
に製作されているが、第３図に示すように製作すること
ができる。すなわち、レーム２の立上り部に連結部15を
もって可動子４がフレーム２と一体に形成される。これ
によって、フレーム２の基部３と可動子４との間隔Ｌや
その平行度が高精度に容易に加工されるようになってい
る。そして、フレーム２と可動子４との間にばね部材６
が組付けられた後、第３図に示すように、前記連結部15
に分離溝16を形成することで、フレーム２と可動子４と
が分離される。しかも、前記分離溝16の溝加工時におい
て、ばね部材６に前記割溝6aが形成される。Further, in this embodiment, the frame 2 and the mover 4 are manufactured separately, but they can be manufactured as shown in FIG. That is, the mover 4 is formed integrally with the frame 2 with the connecting portion 15 at the rising portion of the ram 2. As a result, the distance L between the base 3 of the frame 2 and the mover 4 and its parallelism can be easily processed with high precision. The spring member 6 is provided between the frame 2 and the mover 4.
After being assembled, as shown in FIG.
By forming the separation groove 16 in the frame 2, the frame 2 and the mover 4 are separated. Moreover, the split groove 6a is formed in the spring member 6 when the separation groove 16 is processed.
また、電圧の印加による前記圧電素子１の伸縮方向に
可動子４を平行に移動させるために、フレーム２と可動
子４との間には、圧電素子１の伸縮方向に弾性伸縮可能
な連結部材12が配設されている。この連結部材12は、前
記フレーム２と反対側において、圧電素子１の積層方向
に沿って縦長で、その下端がフレーム２の基部３端面に
固着され、上端部が可動子５の端面に固着されている。In addition, in order to move the mover 4 in parallel in the expansion / contraction direction of the piezoelectric element 1 by applying a voltage, a connecting member that is elastically expandable / contractible in the expansion / contraction direction of the piezoelectric element 1 is provided between the frame 2 and the mover 4. Twelve are arranged. The connecting member 12 is vertically long in the stacking direction of the piezoelectric elements 1 on the side opposite to the frame 2, the lower end thereof is fixed to the end face of the base 3 of the frame 2, and the upper end thereof is fixed to the end face of the mover 5. ing.
また、前記のようにフレーム２と可動子４との間に運
動機構５が組付けられた後、フレーム２の基部３と可動
子４との間に圧電素子１が組付けられ、圧電素子１の一
端（下端）とフレーム２の基部３との間に一対のくさび
部材13,14が配設される。前記上下の両くさび部材13,14
は、圧電素子１の負の温度線膨脹率特性とは逆の正の温
度線膨脹率特性を有する材料、例えば亜鉛材によって構
成されている。そして、周囲の温度変化による圧電素子
１の収縮を、上下の両くさび部材13,14の上下方向の伸
びによって修正し、圧電素子１の上面高さを常に一定に
保つようになっている。After the motion mechanism 5 is assembled between the frame 2 and the mover 4 as described above, the piezoelectric element 1 is assembled between the base 3 of the frame 2 and the mover 4, and the piezoelectric element 1 is attached. A pair of wedge members 13 and 14 are disposed between one end (lower end) of the base and the base portion 3 of the frame 2. The upper and lower wedge members 13, 14
Is made of a material, for example, a zinc material, having a positive temperature linear expansion coefficient characteristic opposite to the negative temperature linear expansion coefficient characteristic of the piezoelectric element 1. The contraction of the piezoelectric element 1 due to a change in ambient temperature is corrected by the vertical extension of the upper and lower wedge members 13 and 14, so that the upper surface height of the piezoelectric element 1 is always kept constant.
上述したように構成されるこの実施例において、圧電
素子１の両電極間に電圧が印加されると、圧電素子１
は、その積層方向、すなわち、第２図において矢印Ｘ方
向に所定長さだけ伸び、これに基づいて可動子４が変位
される。すると、可動子４の変位力を受けて可動子４側
の板ばね８が、フレーム２側の板ばね７に沿って押上げ
られ、両板ばね7,8が湾曲状にたわむ、特に可動子４側
の板ばね８が大きくたわむことで、第２図において矢印
Ｐ方向に回転モーメントが生じ、これによって、傾動体
９が傾動される。そして、傾動体９と一体のワイヤアー
ム10先端の印字ワイヤ11が、所定数の案内部材17に案内
された状態で、その先端が印字位置まで前進される。こ
のようにして、可動子４側の板ばね８がフレーム２側の
板ばね７よりも大きくたわむことで、傾動体９を所定角
度傾動させることができ、圧電素子１の伸びが著しく拡
大されて印字ワイヤ11に伝達される。In this embodiment configured as described above, when a voltage is applied between both electrodes of the piezoelectric element 1, the piezoelectric element 1
Extend in the stacking direction thereof, that is, in the direction of arrow X in FIG. 2, and the mover 4 is displaced based on this. Then, the leaf spring 8 on the side of the mover 4 is pushed up along the leaf spring 7 on the side of the frame 2 under the displacement force of the mover 4, and both the leaf springs 7 and 8 bend in a curved shape. Due to the large deflection of the leaf spring 8 on the fourth side, a rotational moment is generated in the direction of arrow P in FIG. 2, whereby the tilting body 9 is tilted. Then, with the print wire 11 at the tip of the wire arm 10 integrated with the tilting body 9 being guided by the predetermined number of guide members 17, the tip thereof is advanced to the print position. In this way, the leaf spring 8 on the mover 4 side is flexed more than the leaf spring 7 on the frame 2 side, whereby the tilting body 9 can be tilted by a predetermined angle, and the expansion of the piezoelectric element 1 is significantly expanded. It is transmitted to the print wire 11.
圧電素子１に対する電圧の印加が断たれると、圧電素
子１は元の状態に短縮される。すると、可動子４、両板
ばね7,8及び傾動体９が元の状態に復帰され、印字ワイ
ヤ11が後退復帰される。When the voltage application to the piezoelectric element 1 is cut off, the piezoelectric element 1 is shortened to its original state. Then, the mover 4, the leaf springs 7 and 8, and the tilting body 9 are returned to their original states, and the printing wire 11 is returned and returned.
また、この実施例では、所定板厚の１個のばね部材６
によって一対の板ばね7,8と傾動体９とを一体に構成す
ることで、一対の板ばね7,8と傾動体９とをろう付けに
よって結合する必要性がないため、ろう付け部分のクラ
ック発生を解消することができ、耐久性の向上を図るこ
とができる。Further, in this embodiment, one spring member 6 having a predetermined plate thickness is used.
Since the pair of leaf springs 7 and 8 and the tilting body 9 are integrally formed with each other, it is not necessary to join the pair of leaf springs 7 and 8 and the tilting body 9 by brazing, so that cracks in the brazed portion can be prevented. The occurrence can be eliminated, and the durability can be improved.
なお、上記実施例においては、一個のばね部材６によ
って一対の板ばね7,8と傾動体９とを一体に構成した
が、これに限るものではない。例えば、第４図に示すよ
うに、一個のばね部材６′の一端から他端に向けて割溝
6a′を溝加工したり、あるいは、ばね部材６′を割溝6
a′を隔ててＵ字状に折曲することで、一対をなす板ば
ね７′,8′を構成してもよい。ただし、この場合にはば
ね部材６′の他端部に傾動体９′が溶接・ろう付け等に
よって一体に結合される。In the above embodiment, the pair of leaf springs 7 and 8 and the tilting body 9 are integrally formed by one spring member 6, but the invention is not limited to this. For example, as shown in FIG. 4, a split groove is formed from one end of one spring member 6'to the other end.
6a ′ is grooved, or the spring member 6 ′ is split groove 6
A pair of leaf springs 7'and 8'may be formed by bending in a U shape across a '. However, in this case, the tilting body 9'is integrally connected to the other end of the spring member 6'by welding, brazing or the like.
また、第４図に示すように、傾動体９′とワイヤアー
ム10′とを一つの部材によって一体に形成してもよい。Further, as shown in FIG. 4, the tilting body 9'and the wire arm 10 'may be integrally formed by one member.
（発明の効果） 以上述べたように、この発明によれば、一対の板ばね
を１個のばね部材から構成し、そのばね部材の他端部に
傾動体を結合することで、二枚で一対をなす板ばねとこ
れら両板ばねの他端部に跨がる傾動体との三者をろう付
けによって固着するものと異なり、その結合部分のクラ
ック発生を防止することができるとともに板ばねの接触
による摩耗をなくすことができる。また両板ばねをばね
部材の一端から他端部に向けて設けた割溝を隔てて形成
することで、両板ばねの間隔を高精度できわめて近接配
置することができる一方、部品点数を軽減して構造を簡
単化することができる。この結果、耐久性の向上やコス
ト低減を図ることができるとともに、所期の拡大率を安
定して得ることができる。(Effects of the Invention) As described above, according to the present invention, a pair of leaf springs is configured by one spring member, and the tilting body is coupled to the other end of the spring member, so that two springs are formed. Unlike a method in which a pair of leaf springs and a tilting body that straddles the other ends of both leaf springs are fixed by brazing, it is possible to prevent the occurrence of cracks at the joints and to prevent the occurrence of cracks in the leaf springs. Wear due to contact can be eliminated. Also, by forming the leaf springs so as to separate the split groove provided from one end to the other end of the spring member, the distance between the leaf springs can be arranged extremely close to each other with high accuracy, while reducing the number of parts. The structure can be simplified. As a result, the durability can be improved and the cost can be reduced, and the expected expansion rate can be stably obtained.
図面の第１図〜第３図はこの発明の一実施例を示すもの
で、第１図は印字ヘッドに採用される圧電素子の運動変
換装置を示す斜視図、第２図は同じく側面図、第３図は
フレームと可動子との連結部に分離溝を加工するときに
ばね部材に割溝を加工する状態を示す説明図、第４図は
他の実施例を示す側面図である。第５図は先行技術のも
のを示す側面図である。 １……圧電素子 ２……フレーム ３……基部 ４……可動子 ６……ばね部材 6a……割溝 7,8……板ばね ９……傾動体1 to 3 of the drawings show an embodiment of the present invention. FIG. 1 is a perspective view showing a motion converting device for a piezoelectric element used in a print head, and FIG. 2 is a side view of the same. FIG. 3 is an explanatory view showing a state in which a split groove is formed in a spring member when a separation groove is formed in a connecting portion between a frame and a mover, and FIG. 4 is a side view showing another embodiment. FIG. 5 is a side view showing the prior art. 1 ... Piezoelectric element 2 ... Frame 3 ... Base 4 ... Mover 6 ... Spring member 6a ... Split groove 7,8 ... Leaf spring 9 ... Tilt body
Claims (1)
基部を備え、かつ圧電素子に沿って延在するフレーム
（２）と、前記圧電素子の伸縮方向他端に配設された可
動子（４）とに、一対の板ばね（７、８）の一端部をそ
れぞれ固着し、圧電素子（１）の伸縮に基づく前記板ば
ね（７、８）のたわみによってこれら両板ばね（７、
８）の他端に設けられた傾動体（９）を傾動させるよう
になした運動変換装置であって、前記一対の板ばね
（７、８）は、１個のばね部材（６）から構成されると
ともに、そのばね部材（６）の一端から他端部に向けて
設けられた割溝（6a）を隔てて形成され、前記傾動体
（９）は前記ばね部材（６）の前記他端部に一体に設け
られていることを特徴とする圧電素子の運動変換機構。1. A frame (2) having a base portion for supporting one end of the piezoelectric element (1) in the expansion / contraction direction and extending along the piezoelectric element, and a movable member arranged at the other end of the piezoelectric element in the expansion / contraction direction. One end of each of the pair of leaf springs (7, 8) is fixed to the child (4), and the leaf springs (7, 8) are flexed by the expansion and contraction of the piezoelectric element (1). ,
8) A motion conversion device configured to tilt a tilting body (9) provided at the other end, wherein the pair of leaf springs (7, 8) is composed of one spring member (6). In addition, the tilting body (9) is formed with a split groove (6a) provided from one end of the spring member (6) toward the other end, and the tilting body (9) is the other end of the spring member (6). A motion conversion mechanism for a piezoelectric element, wherein the motion conversion mechanism is provided integrally with the section.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014019A JP2555667B2 (en) | 1988-01-25 | 1988-01-25 | Piezoelectric motion converter |
| US07/202,035 US4874978A (en) | 1987-06-09 | 1988-06-03 | Device for magnifying displacement of piezoelectric element or the like and method of producing same |
| DE88305280T DE3884281T2 (en) | 1987-06-09 | 1988-06-09 | Device for increasing the positional displacement of a piezoelectric element or a similar element. |
| EP88305280A EP0295102B1 (en) | 1987-06-09 | 1988-06-09 | Device for magnifying displacement of piezoelectric element or the like |
| US07/397,751 US4979275A (en) | 1987-06-09 | 1989-08-23 | Device for magnifying displacement of piezoelectric element or the like and method for producing same |
| US07/780,099 USRE34823E (en) | 1987-06-09 | 1991-10-17 | Device for magnifying displacement of piezoelectric element or the like and method of producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014019A JP2555667B2 (en) | 1988-01-25 | 1988-01-25 | Piezoelectric motion converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01188353A JPH01188353A (en) | 1989-07-27 |
| JP2555667B2 true JP2555667B2 (en) | 1996-11-20 |
Family
ID=11849483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63014019A Expired - Lifetime JP2555667B2 (en) | 1987-06-09 | 1988-01-25 | Piezoelectric motion converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2555667B2 (en) |
-
1988
- 1988-01-25 JP JP63014019A patent/JP2555667B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01188353A (en) | 1989-07-27 |
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