GB2270198B - A piezoelectric actuator - Google Patents
A piezoelectric actuatorInfo
- Publication number
- GB2270198B GB2270198B GB9317311A GB9317311A GB2270198B GB 2270198 B GB2270198 B GB 2270198B GB 9317311 A GB9317311 A GB 9317311A GB 9317311 A GB9317311 A GB 9317311A GB 2270198 B GB2270198 B GB 2270198B
- Authority
- GB
- United Kingdom
- Prior art keywords
- piezoelectric elements
- piezoelectric
- column
- elements
- piezoelectric actuator
- 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 - Fee Related
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
- H10N30/886—Additional mechanical prestressing means, e.g. springs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
A piezoelectric actuator 10 has piezoelectric ring shaped elements 12 which are combined by means of a fastening device 14 into a mechanically prestressed column of piezoelectric elements. The fastening device 14 has a rod element 18 which extends through the central space 16 of the column of piezoelectric elements, and which has on its two end portions 20, 22 fastening members 24 pressing against the adjacent piezoelectric elements 12. At least one of the fastening members 24 is provided with a prestressing element 28 which consists of a shape memory alloy and which upon suitable temperature change T changes shape mechanically prestressing the column of piezoelectric elements. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4228974A DE4228974C2 (en) | 1992-08-31 | 1992-08-31 | Piezoelectric actuator |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9317311D0 GB9317311D0 (en) | 1993-10-06 |
GB2270198A GB2270198A (en) | 1994-03-02 |
GB2270198B true GB2270198B (en) | 1996-01-24 |
Family
ID=6466857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9317311A Expired - Fee Related GB2270198B (en) | 1992-08-31 | 1993-08-19 | A piezoelectric actuator |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4228974C2 (en) |
FR (1) | FR2695521B1 (en) |
GB (1) | GB2270198B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2745664B1 (en) * | 1996-02-29 | 1998-05-15 | Figest Bv | PROGRESSIVE WAVE PIEZOELECTRIC MOTOR |
DE19650900A1 (en) * | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Piezoelectric actuator |
DE19928780B4 (en) * | 1999-06-23 | 2004-12-30 | Siemens Ag | actuator |
DE19951012A1 (en) * | 1999-10-22 | 2001-04-26 | Bosch Gmbh Robert | Actuator for i.c. engine fuel injection valve has piezoelectric or magnetostrictive element provided with tensioning device fitting through its centre or around its outside |
DE60142818D1 (en) * | 2000-05-31 | 2010-09-30 | Denso Corp | Piezoelectric component for an injection device |
DE10042941A1 (en) | 2000-08-31 | 2002-03-21 | Siemens Ag | Piezo actuator and method for producing a piezo actuator |
DE10358200B4 (en) | 2003-12-12 | 2010-06-24 | Eurocopter Deutschland Gmbh | Rod-shaped, heavy duty, active connecting element and rotary wing aircraft with such a connecting element |
FR3051255B1 (en) * | 2016-05-11 | 2018-05-11 | Centre National De La Recherche Scientifique | VIBRANT ACCELEROMETER PRECONTRAINT |
CN107574565A (en) * | 2016-07-04 | 2018-01-12 | 长春上缘科技发展有限公司 | A kind of adjustable piezoelectric vibrator slide cam selector of prestressing force |
CN114784178B (en) * | 2022-06-22 | 2022-09-09 | 上海隐冠半导体技术有限公司 | Piezoelectric actuator and moving device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0582851A (en) * | 1991-09-19 | 1993-04-02 | Nec Corp | Piezoelectric actuator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3598506A (en) * | 1969-04-23 | 1971-08-10 | Physics Int Co | Electrostrictive actuator |
DE3704742A1 (en) * | 1987-02-14 | 1988-08-25 | Daimler Benz Ag | Piezoelectric control valve |
US5004945A (en) * | 1988-09-26 | 1991-04-02 | Nippondenso Co., Ltd. | Piezoelectric type actuator |
JPH03239169A (en) * | 1990-02-14 | 1991-10-24 | Brother Ind Ltd | Ultrasonic oscillator and ultrasonic motor |
-
1992
- 1992-08-31 DE DE4228974A patent/DE4228974C2/en not_active Expired - Fee Related
-
1993
- 1993-08-19 GB GB9317311A patent/GB2270198B/en not_active Expired - Fee Related
- 1993-08-27 FR FR9310290A patent/FR2695521B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0582851A (en) * | 1991-09-19 | 1993-04-02 | Nec Corp | Piezoelectric actuator |
Non-Patent Citations (1)
Title |
---|
WPI Accession No 93-147537/18 & JP05082851A * |
Also Published As
Publication number | Publication date |
---|---|
DE4228974C2 (en) | 1999-04-15 |
DE4228974A1 (en) | 1994-03-03 |
GB9317311D0 (en) | 1993-10-06 |
FR2695521B1 (en) | 1996-06-14 |
GB2270198A (en) | 1994-03-02 |
FR2695521A1 (en) | 1994-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980819 |