JPH0244528Y2 - - Google Patents
Info
- Publication number
- JPH0244528Y2 JPH0244528Y2 JP19686885U JP19686885U JPH0244528Y2 JP H0244528 Y2 JPH0244528 Y2 JP H0244528Y2 JP 19686885 U JP19686885 U JP 19686885U JP 19686885 U JP19686885 U JP 19686885U JP H0244528 Y2 JPH0244528 Y2 JP H0244528Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- elastic plate
- displacement
- width
- present
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は、金属等からなる弾性板に圧電素子を
両面に貼り合わせたバイモルフ型圧電変位素子に
関する。[Detailed Description of the Invention] The present invention relates to a bimorph type piezoelectric displacement element in which piezoelectric elements are bonded to both sides of an elastic plate made of metal or the like.
圧電素子を用いて電圧を印加することにより、
機械的変位を生じさせる圧電変位素子は、微小な
位置制御またはリレーとして実用化されている。
そして、この圧電変位素子の構造は、例えば第１
図に示す如く、ステンレス材または燐青銅等の金
属板３を両面から挟むように圧電素子１，２を貼
りあわせて構成されている。そして、第２図に示
す如く、バイモルフ素子の一端を固定して、リー
ド端子４へ−極の電圧、リード端子５へ＋極の電
圧を印加することにより、圧電素子１は長さ方向
に伸び、圧電素子２では縮むように変形し、結
局、その先端に印加電圧に比例した機械的変位
Δξが得られるものである。 By applying voltage using a piezoelectric element,
Piezoelectric displacement elements that produce mechanical displacement have been put to practical use as minute position controls or relays.
The structure of this piezoelectric displacement element is, for example, the first
As shown in the figure, it is constructed by bonding piezoelectric elements 1 and 2 so as to sandwich a metal plate 3 made of stainless steel or phosphor bronze from both sides. Then, as shown in FIG. 2, by fixing one end of the bimorph element and applying a negative voltage to the lead terminal 4 and a positive voltage to the lead terminal 5, the piezoelectric element 1 expands in the length direction. , the piezoelectric element 2 is deformed so as to contract, and as a result, a mechanical displacement Δξ proportional to the applied voltage is obtained at its tip.
ところが、従来の圧電バイモルフ素子は圧電素
子１，２の面全体が夫々同一方向に分極されて、
かつ同一面積であるため、長さｌ方向の曲げ変位
しか得ることができず、ねじれ変位の必要な角度
制御装置などへの応用が困難となる欠点を有して
いる。 However, in the conventional piezoelectric bimorph element, the entire surfaces of the piezoelectric elements 1 and 2 are polarized in the same direction,
Moreover, since they have the same area, they can only obtain bending displacement in the direction of length l, which has the disadvantage that it is difficult to apply them to angle control devices that require torsional displacement.
本考案はかかる点に鑑み、弾性板幅寸法の約1/
２以下の幅寸法の圧電素子を弾性板の幅方向左右
対向して貼り付け、幅方向両端を反対方向へ変位
させ、ねじれ変位を得る圧電変位素子を提案する
ことを主たる目的とする。 In view of this, the present invention has been designed to provide approximately 1/1/2 of the width of the elastic plate.
The main purpose of this invention is to propose a piezoelectric displacement element that obtains torsional displacement by attaching piezoelectric elements having a width of 2 or less to an elastic plate so as to face each other in the width direction, and displacing both widthwise ends in opposite directions.
以下本考案の一実施例について図面を参照しな
がら詳細に説明する。 An embodiment of the present invention will be described in detail below with reference to the drawings.
第３図は本考案の一例を示す斜視図である。弾
性板６の幅方向左上側には圧電素子７を貼り付
け、右下側には圧電素子８を貼り付けてバイモル
フ振動子を構成している。圧電素子７，８は厚み
方向に分極されており、表面には銀焼き付けまた
はメツキなどによる電極が付着されている。 FIG. 3 is a perspective view showing an example of the present invention. A piezoelectric element 7 is attached to the upper left side of the elastic plate 6 in the width direction, and a piezoelectric element 8 is attached to the lower right side of the elastic plate 6 to form a bimorph vibrator. The piezoelectric elements 7 and 8 are polarized in the thickness direction, and electrodes are attached to the surfaces by silver baking or plating.
したがつて、第４図に示す如く、バイモルフ素
子の一端を固定してリード端子９へ＋極の電圧、
リード端子１０へ−極の電圧を印加することによ
り、圧電素子７，８は長さ方向に縮むように変形
し、結局、圧電素子７を貼り付けた左半分は上へ
変位し、また圧電素子８を貼り付けた右半分は下
へ変位する。しかし、弾性板が１枚共通のため幅
方向の中心部は上下の変位が０となり、第５図に
示す如く、左右の端部のみ上下へ変位する。結局
バイモルフ素子全体から見ればねじれ変位を生じ
ることになる。また、リード端子９，１０へ印加
する電圧の極性を逆にすることにより、逆方向側
へのねじれ変位を得ることができる。 Therefore, as shown in FIG. 4, one end of the bimorph element is fixed and a positive voltage is applied to the lead terminal 9.
By applying a negative voltage to the lead terminal 10, the piezoelectric elements 7 and 8 are deformed to shrink in the length direction, and eventually the left half to which the piezoelectric element 7 is attached is displaced upward, and the piezoelectric element 8 The right half where is pasted is displaced downward. However, since one elastic plate is common, the vertical displacement at the center in the width direction is zero, and only the left and right ends are displaced vertically, as shown in FIG. As a result, a torsional displacement occurs when looking at the bimorph element as a whole. Further, by reversing the polarity of the voltage applied to the lead terminals 9 and 10, torsional displacement in the opposite direction can be obtained.
よつて、本考案は角度制御装置など、ねじれ変
位を必要とする特殊な微小位置制御装置への応用
が可能である。 Therefore, the present invention can be applied to special minute position control devices that require torsional displacement, such as angle control devices.
以上述べたごとく本考案によれば、弾性板を挟
むように圧電層を貼り合わせたバイモルフ型圧電
変位素子において、上記圧電素子の幅寸法を弾性
板の幅寸法の約1/2以下とし、２枚の圧電素子が
弾性板幅方向の左右に位置して対向構造とし、ね
じり変形を得るようにしたので、
ねじれ変位の必要な角度制御装置などへの応用
が可能となる効果を有する。 As described above, according to the present invention, in a bimorph type piezoelectric displacement element in which piezoelectric layers are pasted together so as to sandwich an elastic plate, the width dimension of the piezoelectric element is approximately 1/2 or less of the width dimension of the elastic plate, and 2 Since the two piezoelectric elements are placed on the left and right sides of the elastic plate in a facing structure to obtain torsional deformation, the piezoelectric elements can be applied to angle control devices that require torsional displacement.
第１図は従来の素子の例を示す図、第２図は同
じく作用の説明図、第３図は本考案の一実施例を
示す図、第４図及び第５図は本考案の動作の説明
に供する図である。
６……弾性板、７，８……圧電素子、９，１０
……リード端子。
Fig. 1 is a diagram showing an example of a conventional element, Fig. 2 is an explanatory diagram of the operation, Fig. 3 is a diagram showing an embodiment of the present invention, and Figs. 4 and 5 are illustrations of the operation of the present invention. It is a figure provided for explanation. 6...Elastic plate, 7,8...Piezoelectric element, 9,10
...Lead terminal.
Claims (1)
モルフ型圧電変位素子において、上記圧電素子の
幅寸法を弾性板の幅寸法の約1/2以下とし、２枚
の圧電素子が弾性板幅方向の左右に位置して対向
構造とし、ねじり変形を得るようにしたことを特
徴とする圧電変位素子。 In a bimorph type piezoelectric displacement element in which piezoelectric layers are pasted together so as to sandwich an elastic plate, the width of the piezoelectric element is set to be approximately 1/2 or less of the width of the elastic plate, and the two piezoelectric elements are aligned in the width direction of the elastic plate. A piezoelectric displacement element characterized in that it has an opposing structure located on the left and right sides to obtain torsional deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19686885U JPH0244528Y2 (en) | 1985-12-21 | 1985-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19686885U JPH0244528Y2 (en) | 1985-12-21 | 1985-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62104466U JPS62104466U (en) | 1987-07-03 |
| JPH0244528Y2 true JPH0244528Y2 (en) | 1990-11-27 |
Family
ID=31156065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19686885U Expired JPH0244528Y2 (en) | 1985-12-21 | 1985-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244528Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022091559A1 (en) * | 2020-10-30 | 2022-05-05 | パナソニックＩｐマネジメント株式会社 | Actuator |
-
1985
- 1985-12-21 JP JP19686885U patent/JPH0244528Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62104466U (en) | 1987-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0217860U (en) | ||
| JPH0244528Y2 (en) | ||
| JPS62237779A (en) | Torsional displacement type piezoelectric element | |
| JPS5878673U (en) | movable structure | |
| JPS61111168U (en) | ||
| JPH0642354Y2 (en) | Bimorph unit | |
| JPH0135487Y2 (en) | ||
| JPH0132752Y2 (en) | ||
| JPH0244527Y2 (en) | ||
| JPS60166294U (en) | Drive piezoelectric device | |
| JPS6280357U (en) | ||
| JPS6129846Y2 (en) | ||
| JPS60119200U (en) | piezoelectric sounding body | |
| JPS6127357U (en) | piezoelectric bimorph element | |
| JPS63182561U (en) | ||
| JPH02121778U (en) | ||
| JPS6235331U (en) | ||
| JPS62134037U (en) | ||
| JPS6295331U (en) | ||
| JPS61131124U (en) | ||
| JPS61157324U (en) | ||
| JPS60257079A (en) | Connector | |
| JPS6159365U (en) | ||
| JPS62178556U (en) | ||
| JPH0363957U (en) |