JPH0298337U - - Google Patents
Info
- Publication number
- JPH0298337U JPH0298337U JP436189U JP436189U JPH0298337U JP H0298337 U JPH0298337 U JP H0298337U JP 436189 U JP436189 U JP 436189U JP 436189 U JP436189 U JP 436189U JP H0298337 U JPH0298337 U JP H0298337U
- Authority
- JP
- Japan
- Prior art keywords
- electrostrictive element
- hole
- piezoelectric ceramic
- pair
- center
- 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
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000002950 deficient Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
Landscapes
- Shutters For Cameras (AREA)
Description
第１図Ａ及びＢは夫々本考案による電歪素子の
一実施例の平面図及び正面図、第２図は本考案に
よる電歪素子を組み込んだカメラ用シヤツターの
常態を示す要部平面図、第３図は第２図に示す構
成部品の関係を示す説明的縦断面図、第４図は第
２図のシヤツターの羽根開放状態を示す平面図、
第５図は従来の電歪素子の配置状態を示す平面図
、第６図は他の従来例の平面図である。
１……電歪素子、１ａ……圧電セラミツク板、
１ｂ……中間電極板、１ｃ……欠損部、２……固
定部材、３……作用点、４……孔、５……被動部
材。
1A and 1B are a plan view and a front view, respectively, of an embodiment of the electrostrictive element according to the present invention, and FIG. 2 is a plan view of essential parts showing the normal state of a camera shutter incorporating the electrostrictive element according to the present invention. FIG. 3 is an explanatory vertical sectional view showing the relationship of the components shown in FIG. 2, FIG. 4 is a plan view showing the shutter blade of FIG. 2 in an open state,
FIG. 5 is a plan view showing the arrangement of a conventional electrostrictive element, and FIG. 6 is a plan view of another conventional example. 1... Electrostrictive element, 1a... Piezoelectric ceramic plate,
1b... Intermediate electrode plate, 1c... Missing part, 2... Fixing member, 3... Point of action, 4... Hole, 5... Driven member.
Claims (1)
、中央部に孔を有する中間電極板の両面に上記各
孔が整合するように貼り合わせて成る電歪素子に
おいて、上記一対の圧電セラミツク板の変位量が
最大となる部分の近傍部分に、内周部から外周部
に渡つて延びる欠損部を互いに重ならないように
配設したことを特徴とする電歪素子。 In an electrostrictive element comprising a pair of piezoelectric ceramic plates having a hole in the center and bonded to both sides of an intermediate electrode plate having a hole in the center so that the holes are aligned, the displacement of the pair of piezoelectric ceramic plates is measured. An electrostrictive element characterized in that a defective part extending from an inner peripheral part to an outer peripheral part is arranged near a part where the amount is maximum so as not to overlap with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436189U JPH0298337U (en) | 1989-01-20 | 1989-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436189U JPH0298337U (en) | 1989-01-20 | 1989-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298337U true JPH0298337U (en) | 1990-08-06 |
Family
ID=31206810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP436189U Pending JPH0298337U (en) | 1989-01-20 | 1989-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298337U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64939A (en) * | 1987-06-24 | 1989-01-05 | Canon Inc | Driving device for exposing device |
-
1989
- 1989-01-20 JP JP436189U patent/JPH0298337U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS64939A (en) * | 1987-06-24 | 1989-01-05 | Canon Inc | Driving device for exposing device |